CN118564687A - A reversing valve anti-leakage structure and reversing valve - Google Patents

A reversing valve anti-leakage structure and reversing valve Download PDF

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Publication number
CN118564687A
CN118564687A CN202310210468.2A CN202310210468A CN118564687A CN 118564687 A CN118564687 A CN 118564687A CN 202310210468 A CN202310210468 A CN 202310210468A CN 118564687 A CN118564687 A CN 118564687A
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CN
China
Prior art keywords
valve core
oil
valve
main body
reversing valve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202310210468.2A
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Chinese (zh)
Inventor
康志军
余远航
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Zhejiang Dunan Artificial Environment Co Ltd
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Zhejiang Dunan Artificial Environment Co Ltd
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Application filed by Zhejiang Dunan Artificial Environment Co Ltd filed Critical Zhejiang Dunan Artificial Environment Co Ltd
Priority to CN202310210468.2A priority Critical patent/CN118564687A/en
Publication of CN118564687A publication Critical patent/CN118564687A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
    • F16K11/072—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with pivoted closure members
    • F16K11/074—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with pivoted closure members with flat sealing faces

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Multiple-Way Valves (AREA)

Abstract

本发明提供一种换向阀防泄漏结构和换向阀，涉及控制阀技术领域。该换向阀防泄漏结构包括储油结构，储油结构设置于主体朝向阀芯的切换端的一侧并与阀芯的切换端对应设置，储油结构被配置为用于储存至少部分主体内腔的介质，以在阀芯的切换端和主体之间形成油膜，用于阀芯的油封和润滑。储油结构设置于主体，使主体内腔的介质可以至少部分被储存于储油结构内，储油结构朝向阀芯的切换端的一侧并与其对应设置，使储油结构内的介质可以流动至阀芯的切换端和主体之间，以在两者之间形成油膜，起到油封的效果，减少主体内的高压介质泄露至阀芯的低压腔内，同时，可增加阀芯和主体之间的润滑效果，提高换向阀的使用可靠性。

The present invention provides a reversing valve anti-leakage structure and a reversing valve, and relates to the technical field of control valves. The reversing valve anti-leakage structure includes an oil storage structure, which is arranged on the side of the switching end of the main body facing the valve core and is arranged corresponding to the switching end of the valve core. The oil storage structure is configured to store at least part of the medium in the inner cavity of the main body to form an oil film between the switching end of the valve core and the main body, which is used for oil sealing and lubrication of the valve core. The oil storage structure is arranged on the main body, so that the medium in the inner cavity of the main body can be at least partially stored in the oil storage structure, and the oil storage structure is arranged on the side of the switching end of the valve core and is arranged corresponding to it, so that the medium in the oil storage structure can flow between the switching end of the valve core and the main body to form an oil film between the two, which plays the role of oil sealing, reduces the leakage of high-pressure medium in the main body into the low-pressure cavity of the valve core, and at the same time, can increase the lubrication effect between the valve core and the main body, and improve the reliability of the use of the reversing valve.

Description

Leakage-proof structure of reversing valve and reversing valve
Technical Field
The invention relates to the technical field of control valves, in particular to a reversing valve leakage-proof structure and a reversing valve.
Background
The reversing valve is a directional control valve with more than two flow forms and more than two oil ports, so as to realize medium circulation, cutting and reversing, pressure unloading and sequential action control. Wherein the medium is specifically a refrigerant or a refrigerant.
When the existing reversing valve is used for reversing, leakage easily occurs between the valve core and the inner cavity of the valve body, so that the use reliability of the reversing valve is affected.
Disclosure of Invention
The leakage-proof structure of the reversing valve and the reversing valve provided by the invention have the advantages that the friction resistance of the valve core is reduced, and the use reliability of the reversing valve is improved.
According to a first aspect of the present invention, there is provided a reversing valve leakage preventing structure including a main body and a spool rotatably provided in the main body to switch positions of switching ends of the spool, the reversing valve leakage preventing structure including:
the oil storage structure is arranged on one side of the main body, facing the switching end of the valve core, and corresponds to the switching end of the valve core, and is configured to store at least part of medium in the inner cavity of the main body so as to form an oil film between the switching end of the valve core and the main body for oil sealing and lubrication of the valve core.
In some embodiments, the oil storage structure is an oil guide groove provided to the main body.
According to a second aspect of the present invention, there is also provided a reversing valve according to an embodiment of the present invention, including:
a main body provided with a first flow port, a second flow port, a third flow port and a fourth flow port;
the valve core is rotatably arranged in the main body, one end of the valve core is communicated with the first circulation port, and the other end of the valve core is selectively communicated with the second circulation port or the third circulation port;
The reversing valve leakage-proof structure is arranged between the other end of the valve core and the side wall of the main body corresponding to the valve core.
In some of these embodiments, the body comprises:
The first flow port and the fourth flow port are arranged on the valve body;
the end cover is arranged on one side, far away from the first flow port, of the valve body, and the second flow port and the third flow port are arranged on the end cover;
the oil storage structure of the reversing valve leakage-proof structure is arranged on one side of the end cover, which faces the valve core.
In some of these embodiments, the oil storage structure of the reversing valve leak-proof structure includes:
The first oil guide grooves are formed in one side, facing the valve core, of the end cover, the number of the first oil guide grooves is two, and the two first oil guide grooves are correspondingly arranged outside the second flow port and outside the third flow port in a ring mode respectively.
In some embodiments, the reversing valve leakage preventing structure further comprises a gasket, the gasket is arranged between one end of the valve core, which is close to the end cover, and the end cover, the gasket is provided with a first oil guide through hole, the first oil guide through hole is correspondingly arranged with the first oil guide groove and is communicated with the first oil guide groove, and the oil film is formed between the switching end of the valve core and the gasket.
In some of these embodiments, the oil storage structure of the reversing valve leak-proof structure further includes:
The second oil guide grooves are formed in one side, facing the valve core, of the end cover, the second oil guide grooves are annularly arranged outside the two first oil guide grooves, and the first oil guide grooves are communicated with the second oil guide grooves;
the gasket is provided with a second oil guide through hole, and the second oil guide through hole is correspondingly arranged with the second oil guide groove and communicated with the second oil guide groove.
In some embodiments, the number of the second oil guiding grooves is plural, the plural second oil guiding grooves are sleeved with each other, and the plural second oil guiding grooves are mutually communicated.
In some embodiments, the number of the first oil guiding holes is plural, and the plural first oil guiding holes are respectively arranged along the circumferential direction of the two first oil guiding grooves.
In some embodiments, the first oil-guiding through hole is at least one of a round hole structure, an arc hole or a kidney hole.
In some embodiments, one of the sides of the gasket and the end cover, which are close to each other, is provided with a positioning protrusion, and the other one is provided with a positioning hole, and the positioning protrusion penetrates through the positioning hole and is used for positioning between the gasket and the end cover.
In some embodiments, at least two positioning protrusions are disposed corresponding to the second flow port and the third flow port, for positioning the switching end of the valve spool.
In some embodiments, the gasket is provided with two communication holes and a mounting through hole, the two communication holes are respectively correspondingly communicated with the second flow port and the third flow port, the mounting through hole is arranged between the two communication holes, the valve core is provided with a rotating shaft, and the rotating shaft penetrates through the mounting through hole.
One embodiment of the present invention has the following advantages or benefits:
According to the leakage-proof structure of the reversing valve, the oil storage structure is arranged in the main body, so that a medium in the inner cavity of the main body can be at least partially stored in the oil storage structure, the oil storage structure faces one side of the switching end of the valve core and is arranged corresponding to the switching end of the valve core, the medium in the oil storage structure can flow between the switching end of the valve core and the main body, an oil film is formed between the switching end of the valve core and the main body, the effect of oil seal is achieved, leakage of a high-pressure medium in the main body into a low-pressure cavity of the valve core is reduced, meanwhile, the lubrication effect between the valve core and the main body can be increased, and the use reliability of the reversing valve is improved.
The reversing valve provided by the embodiment of the invention is characterized in that the main body is provided with four flow ports, namely a first flow port, a second flow port, a third flow port and a fourth flow port, and the reversing valve is specifically a four-way valve according to the number of the flow ports. When the reversing valve is in a first state, the valve core can rotate relative to the main body, one end of the valve core, which is far away from the first flow port, rotates to the second flow port, at the moment, the first flow port is communicated with the second flow port, and the third flow port is communicated with the fourth flow port through the inner cavity of the main body. When the reversing valve is in the second state, the valve core can rotate relative to the main body, one end of the valve core, which is far away from the first flow port, rotates to the third flow port, at the moment, the first flow port is communicated with the third flow port, and the second flow port is communicated with the fourth flow port through the inner cavity of the main body.
The reversing valve leakage-proof structure is arranged between the other end of the valve core and the corresponding side wall of the main body. Because one end of the valve core is a supporting end, the other end of the valve core is a switching end, the switching end can change relative to the position of the main body, the position of the switching end of the valve core is easy to leak media, the reversing valve leakage-preventing structure is arranged between the other end of the valve core and the side wall of the main body corresponding to the reversing valve leakage-preventing structure, and the reversing valve leakage-preventing structure is used for sealing between the switching end of the valve core and the main body so as to reduce the leakage risk of the valve core.
Drawings
For a better understanding of the invention, reference may be made to the embodiments illustrated in the following drawings. The components in the drawings are not necessarily to scale and related elements may be omitted in order to emphasize and clearly illustrate the technical features of the present invention. In addition, the relevant elements or components may have different arrangements as known in the art. Furthermore, in the drawings, like reference numerals designate identical or similar parts throughout the several views. The above and other features and advantages of the present invention will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings.
Wherein:
FIG. 1 is a schematic view showing the overall structure of a reversing valve according to an embodiment of the present invention;
FIG. 2 is an exploded view of a reversing valve according to an embodiment of the present invention;
FIG. 3 is a schematic view of a reversing valve according to an embodiment of the invention in a first state;
FIG. 4 is a schematic view of a reversing valve according to an embodiment of the invention in a second state;
FIG. 5 is a schematic view showing the structure of a valve element in a reversing valve according to an embodiment of the present invention;
FIG. 6 is a schematic view showing the structure of a driven gear in a reversing valve according to an embodiment of the present invention;
FIG. 7 shows a schematic diagram of the installation of an end cap, a gasket and a valve core in a reversing valve according to an embodiment of the invention;
FIG. 8 is an exploded view of an end cap, gasket and valve core of a reversing valve according to an embodiment of the invention;
FIG. 9 is a schematic diagram showing the structure of an end cover in a reversing valve according to an embodiment of the present invention;
FIG. 10 shows a second schematic structural view of an end cap of a reversing valve according to an embodiment of the present invention;
FIG. 11 is an exploded view of an end cap, gasket in a reversing valve according to an embodiment of the invention;
FIG. 12 is a schematic view showing the structure of the reversing valve according to the embodiment of the invention after the end cover and the gasket are assembled;
FIG. 13 shows a schematic diagram of the installation of an end cap, a gasket and a valve core in a reversing valve according to an embodiment of the invention;
FIG. 14 is a schematic cross-sectional view of an end cap, gasket in a reversing valve according to an embodiment of the invention;
FIG. 15 is a schematic diagram showing a first oil passage hole of a gasket in a reversing valve according to an embodiment of the present invention;
FIG. 16 is a schematic diagram showing a second configuration of a gasket in a reversing valve according to an embodiment of the present invention;
FIG. 17 is a schematic diagram showing a second oil passage hole of a gasket in a reversing valve according to an embodiment of the present invention;
Fig. 18 is a schematic view showing the structure of a spacer display positioning hole in a reversing valve according to an embodiment of the invention.
Wherein reference numerals are as follows:
1. A valve core; 2. a main body; 3. a gasket; 4. a regulating piece; 5. a driving source; 6. a transmission mechanism; 7. a controller; 8. a first bearing; 9. a second bearing; 10. a retainer ring;
11. A straight pipe section; 111. a connecting key; 12. a sloped tube portion; 13. a rotation shaft;
201. A first flow port; 202. a second flow port; 203. a third flow port; 204. a fourth flow port;
20. a valve body; 21. a first flange; 22. a second flange; 23. a third flange; 24. a fourth flange; 25. an end cap; 251. positioning the bulge; 252. a first oil guide groove; 253. a second oil guide groove;
31. A communication hole; 32. mounting through holes; 33. positioning holes; 34. the first oil guide through hole; 35. the second oil guide through hole;
51. driving the cover plate; 52. a drive bearing; 53. clamping springs;
61. a drive gear; 62. a driven gear; 621. a key slot;
71. binding posts; 72. and controlling the cover plate.
Detailed Description
The technical solutions in the exemplary embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the exemplary embodiments of the present invention. The example embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the present invention, and it should be understood that various modifications and changes can be made to the example embodiments without departing from the scope of the invention.
In the description of the present invention, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance unless explicitly specified or limited otherwise; the term "plurality" refers to two or more than two; the term "and/or" includes any and all combinations of one or more of the associated listed items. In particular, references to "the/the" object or "an" object are likewise intended to mean one of a possible plurality of such objects.
Unless specified or indicated otherwise, the terms "connected," "fixed," and the like are to be construed broadly and are, for example, capable of being fixedly connected, detachably connected, or integrally connected, electrically connected, or signally connected; "coupled" may be directly coupled or indirectly coupled through intermediaries. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to the specific circumstances.
Further, in the description of the present invention, it should be understood that the terms "upper", "lower", "inner", "outer", and the like in the exemplary embodiments of the present invention are described in terms of the drawings, and should not be construed as limiting the exemplary embodiments of the present invention. It will also be understood that in the context of an element or feature being connected to another element(s) "upper," "lower," or "inner," "outer," it can be directly connected to the other element(s) "upper," "lower," or "inner," "outer," or indirectly connected to the other element(s) "upper," "lower," or "inner," "outer" via intervening elements.
Example embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments can be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus detailed descriptions thereof will be omitted.
The embodiment provides a reversing valve for realizing medium circulation, cutting and reversing. As shown in fig. 1-2, the reversing valve comprises a main body 2 and a valve core 1, wherein the main body 2 is provided with a first flow port 201, a second flow port 202, a third flow port 203 and a fourth flow port 204, the valve core 1 is rotatably arranged in the main body 2, one end of the valve core 1 is communicated with the first flow port 201, and the other end of the valve core 1 is a switching end and is used for selectively communicating with the second flow port 202 or the third flow port 203.
The reversing valve provided in this embodiment has four flow ports, i.e., a first flow port 201, a second flow port 202, a third flow port 203, and a fourth flow port 204, in the main body 2, and is specifically a four-way valve according to the number of the flow ports. As shown in fig. 3, when the reversing valve is in the first state, the valve core 1 can rotate relative to the main body 2, and one end of the valve core 1 away from the first flow port 201 rotates to the second flow port 202, at this time, the first flow port 201 communicates with the second flow port 202, and the third flow port 203 communicates with the fourth flow port 204 through the inner cavity of the main body 2. As shown in fig. 4, when the reversing valve is in the second state, the valve core 1 can rotate relative to the main body 2, and the end of the valve core 1 away from the first flow port 201 rotates to the third flow port 203, at this time, the first flow port 201 communicates with the third flow port 203, and the second flow port 202 communicates with the fourth flow port 204 through the inner cavity of the main body 2.
It should be noted that the first state and the second state may be specifically one of a cooling state and a heating state in the air conditioning system. That is, when the first state is the cooling state, the second state is the heating state; when the first state is a heating state, the second state is a cooling state. The reversing valve mainly rotates in the main body 2 through the valve core 1, so that the other end of the valve core 1 is switched between the second flow port 202 and the third flow port 203, and the purposes of reversing and switching the refrigerating/heating states are achieved. It will be appreciated that the first state and the second state include, but are not limited to, switching between cooling and heating, and switching between other different working states, and may be adjusted according to actual production requirements, and the embodiment is not limited thereto.
The first flow port 201 communicates with the compressor return port, the fourth flow port 204 communicates with the compressor discharge port, and the second flow port 202 and the third flow port 203 communicate with the condenser and the evaporator. The medium flowing through each of the flow ports is a refrigerant and is accompanied by a refrigerant oil.
Specifically, as shown in fig. 3, in the first state, the inner cavity of the main body 2 is a high-pressure cavity, the medium enters the inner cavity of the main body 2 from the fourth flow port 204 and flows out through the third flow port 203, the low-pressure medium enters the valve core 1 from the second flow port 202 and flows out through the first flow port 201, and at this time, the valve core 1 is a low-pressure cavity; as shown in fig. 4, in the second state, the inner cavity of the main body 2 is a high-pressure cavity, medium enters the inner cavity of the main body 2 from the fourth flow port 204 and flows out through the second flow port 202, and low-pressure medium enters the valve element 1 from the third flow port 203 and flows out through the first flow port 201, and at this time, the valve element 1 is a low-pressure cavity.
In one embodiment, as shown in fig. 2-4, the main body 2 of the reversing valve includes a valve body 20, the valve body 20 has an appearance similar to a cuboid structure, the valve body 20 has a hollow structure, and a cavity of the valve body 20 is an inner cavity of the main body 2 and may also be called a high-pressure cavity. The first circulation port 201 and the fourth circulation port 204 are provided in the valve body 20, the fourth circulation port 204 is provided on the top surface of the valve body 20, the first circulation port 201 is provided on one side of the valve body 20, and an opening is provided on the other side.
In one embodiment, as shown in fig. 2 to 4, the main body 2 of the reversing valve further includes a first flange 21, the first flange 21 is fixedly disposed on a side surface of the valve body 20 by bolts, and the first flange 21 is disposed opposite to the first flow port 201. The first flange 21 is provided with a first through hole corresponding to the first through hole 201, and low-pressure medium flows out from the valve element 1 through the first through hole 201 and the first through hole.
In one embodiment, the body 2 of the reversing valve further includes an end cap 25, the end cap 25 being disposed on a side of the valve body 20 remote from the first flow port 201, the second flow port 202 and the third flow port 203 being disposed on the end cap 25.
The end cover 25 may also be called an exhaust flange, the shape of the end cover 25 is similar to a cuboid sheet structure, the end cover 25 is disposed on one side of the valve body 20 away from the first flow port 201, and the end cover 25 plays a role in blocking an opening end of the valve body 20. The second flow port 202 and the third flow port 203 are disposed on the end cover 25, and the end cover 25 provides the positions for the two flow ports, and the two flow ports serve as the switching ports of the valve core 1 and are disposed on the same end cover 25, so that the valve core 1 and the two flow ports can be switched conveniently.
In one embodiment, the main body 2 of the reversing valve further includes a second flange 22 and a third flange 23, where the second flange 22 and the third flange 23 are fixedly disposed on the end cover 25 through bolts, the second flange 22 is disposed opposite to the second flow port 202, and the second flange 22 is provided with a second through hole corresponding to the second flow port 202. The third flange 23 is disposed opposite to the third flow opening 203, and the third flange 23 is provided with a third through hole corresponding to the third flow opening 203.
In one embodiment, as shown in fig. 2, the main body 2 of the reversing valve further includes a fourth flange 24, the fourth flange 24 is fixedly disposed on the top of the valve body 20 through bolts, the fourth flange 24 is disposed opposite to the fourth flow port 204, and a fourth through hole is disposed on the fourth flange 24 corresponding to the fourth flow port 204.
In the first state, as shown in fig. 3, the medium enters the chamber of the valve body 20 through the fourth through hole and the fourth flow port 204, and flows out through the third flow port 203 and the third through hole, and the low-pressure medium enters the valve element 1 from the second through hole and the second flow port 202, and flows out through the first flow port 201 and the first through hole; in the second state, as shown in fig. 4, the medium enters the chamber of the valve body 20 through the fourth through-hole and the fourth flow port 204, and flows out through the second flow port 202 and the second through-hole, and the low-pressure medium enters the valve element 1 from the third through-hole and the third flow port 203, and flows out through the first flow port 201 and the first through-hole.
In one embodiment, as shown in fig. 2-4, the reversing valve further includes a driving source 5 and a transmission mechanism 6, the transmission mechanism 6 is connected to the valve core 1, an output end of the driving source 5 is connected to the transmission mechanism 6, and the driving source 5 drives the valve core 1 to rotate relative to the main body 2 through the transmission mechanism 6.
The driving source 5 can provide driving force, and the driving source 5 is a driving motor, however, in other embodiments, other driving devices may be used for the driving source 5, which is not limited herein. The driving force of the driving source 5 is transmitted to the valve core 1 through the transmission mechanism 6 by the driving source 5 and the transmission mechanism 6 being connected to each other, so that the rotation of the valve core 1 relative to the main body 2 is achieved. Wherein, the transmission mechanism 6 plays a role in driving force transmission, and the transmission mechanism 6 is arranged at one end of the valve core 1 and close to the first flow port 201, and the driving source 5 drives the transmission mechanism 6 to rotate, so as to drive the valve core 1 to rotate and reverse.
Specifically, as shown in fig. 2, the main body 2 is provided with a driving cavity for accommodating the driving source 5, and after the driving source 5 is placed in the driving cavity and fixed by the snap spring 53, a driving cover plate 51 is covered on the outer side of the driving cavity to realize the blocking of the driving cavity. The output shaft and the rear end of the driving source 5 may be provided with a driving bearing 52 to ensure smoothness of rotation of the driving source 5.
In one embodiment, as shown in fig. 2, the reversing valve further includes a controller 7, and the main body 2 is further provided with a control chamber for accommodating the controller 7, and the controller 7 is electrically connected to the driving source 5 through a terminal post 71 for controlling the rotation angle and the rotation direction of the driving source 5. After the controller 7 is placed in the control chamber, a control cover plate 72 is arranged on the outer side of the control chamber to realize the blocking of the control chamber.
In one embodiment, as shown in fig. 2-4, the transmission mechanism 6 includes a driving gear 61 and a driven gear 62, the driving gear 61 is connected to the output end of the driving source 5, the driven gear 62 is sleeved on one end of the valve core 1 near the first flow port 201, and the driving gear 61 and the driven gear 62 are meshed with each other. The driving source 5 drives the driving gear 61 to rotate, and as the driving gear 61 rotates, the driven gear 62 is driven to rotate under the meshing transmission action of the driving gear 61 and the driven gear 62, and the valve core 1 is driven to rotate by the rotation of the driven gear 62. Through the mutual engagement of the driving gear 61 and the driven gear 62, the transmission can be realized in a mode that the pinion drives the large gear to rotate, so that the driving force is saved.
In one embodiment, as shown in fig. 2 and 4 to 5, the valve element 1 includes a straight pipe portion 11 and an inclined pipe portion 12, one end of the straight pipe portion 11 is disposed opposite to the first flow port 201, the other end is connected to the straight pipe portion 11, and one end of the inclined pipe portion 12 remote from the straight pipe portion 11 selectively communicates with the second flow port 202 and the third flow port 203.
As shown in fig. 5-6, one of the straight pipe portion 11 of the valve core 1 and the inner wall of the driven gear 62 is provided with a connection key 111, and the other is provided with a key slot 621, and the connection key 111 is clamped in the key slot 621, so that connection between the straight pipe portion 11 of the valve core 1 and the driven gear 62 is realized, and the driven gear 62 can drive the straight pipe portion 11 of the valve core 1 to rotate.
In one embodiment, as shown in fig. 2 and 5, the valve core 1 further includes a rotation shaft 13, the rotation shaft 13 is disposed on the inclined tube portion 12, the main body 2 is provided with a shaft hole corresponding to the rotation shaft 13, and the rotation shaft 13 is disposed through the shaft hole.
The rotary shaft 13 of the valve core 1 penetrates through the shaft hole of the main body 2, and the rotary shaft 13 provides a rotary center for the valve core 1 and also plays a role in supporting the valve core 1 in the rotating process. When the straight pipe portion 11 is rotated, the rotation shaft 13 is provided to the inclined pipe portion 12 of the valve element 1, and the inclined pipe portion 12 is rotated about the rotation shaft 13 as a rotation center, instead of being rotated about its own axis, so that the end of the inclined pipe portion 12 remote from the straight pipe portion 11 can be switched between the second flow port 202 and the third flow port 203.
In one embodiment, as shown in fig. 2 and fig. 4-5, the reversing valve further includes a first bearing 8, a bearing chamber is disposed in the main body 2, the first bearing 8 is disposed in the bearing chamber and sleeved on the straight tube portion 11 of the valve core 1, so as to improve the smoothness of rotation of the straight tube portion 11 of the valve core 1. Meanwhile, the first bearing 8 is beneficial to positioning the valve core 1, so that the valve core 1 is not easy to incline, the valve core 1 is not easy to rub with the valve body 20, and the friction resistance of the valve core 1 is reduced.
It can be understood that the number of the first bearings 8 may be plural, and the plural first bearings 8 are arranged in parallel and at intervals, so as to further facilitate the free rotation of the straight pipe portion 11 of the valve core 1. A check ring 10 is arranged between two adjacent first bearings 8, the check ring 10 is sleeved on a straight pipe part 11 of the valve core 1, and the check ring 10 plays a role in spacing the two adjacent first bearings 8 and plays a role in bearing limiting.
It will be appreciated that the present embodiment takes two first bearings 8 as an example, and the actual number of first bearings 8 is not limited and may be adjusted according to the actual production situation.
In one embodiment, as shown in fig. 2 and 4-5, the reversing valve further includes a second bearing 9, where the second bearing 9 is disposed in the shaft hole and sleeved outside the rotating shaft 13. By providing the rotary shaft 13 between the rotary shaft 13 and the shaft hole, the smoothness of rotation of the rotary shaft 13 of the valve element 1 is improved.
When the existing reversing valve is used for reversing, leakage easily occurs between the valve core 1 and the inner cavity of the valve body 20, so that the use reliability of the reversing valve is affected.
In order to solve this problem, as shown in fig. 2 and fig. 7 to 8, the reversing valve provided in this embodiment further includes a reversing valve leakage preventing structure provided between the other end of the valve element 1 and the side wall of the main body 2 corresponding thereto.
Because one end of the valve core 1 is a supporting end, the other end of the valve core 1 is a switching end, the switching end can change relative to the position of the main body 2, the position of the switching end of the valve core 1 is easy to leak media, a reversing valve leakage prevention structure is arranged between the other end of the valve core 1 and the side wall of the main body 2 corresponding to the reversing valve leakage prevention structure, and the reversing valve leakage prevention structure is used for sealing between the switching end of the valve core 1 and the main body 2 so as to reduce the leakage risk of the valve core 1.
Specifically, the reversing valve leak-proof structure includes an oil storage structure provided on a side of the main body 2 facing the switching end of the spool 1 and disposed in correspondence with the switching end of the spool 1, the oil storage structure being configured to store at least part of a medium of the inner cavity of the main body 2 to form an oil film between the switching end of the spool 1 and the main body 2 for oil sealing and lubrication of the spool 1.
According to the anti-leakage structure of the reversing valve, the oil storage structure is arranged in the main body 2, so that a medium in the inner cavity of the main body 2 can be at least partially stored in the oil storage structure, the oil storage structure faces one side of the switching end of the valve core 1 and is correspondingly arranged with the switching end of the valve core, the medium in the oil storage structure can flow between the switching end of the valve core 1 and the main body 2 to form an oil film between the switching end and the main body 2, the effect of an oil seal is achieved, the leakage of a high-pressure medium in the main body 2 into a low-pressure cavity of the valve core 1 is reduced, meanwhile, the lubrication effect between the valve core 1 and the main body 2 can be increased, and the use reliability of the reversing valve is improved.
In one embodiment, as shown in fig. 2 and 7-8, the oil reservoir structure of the reversing valve leakage preventing structure is provided at the side of the end cap 25 facing the spool 1.
Because one end of the valve core 1 corresponds to the first flow port 201, the other end of the valve core 1 corresponds to the second flow port 202 and the third flow port 203, the other end of the valve core 1 is a switching end, and the second flow port 202 and the third flow port 203 can be switched between, and the second flow port 202 and the third flow port 203 are arranged on the end cover 25, and the oil storage structure is arranged on one side of the end cover 25 facing the valve core 1, so that the oil storage structure corresponds to the switching end of the valve core 1, and leakage of the valve core 1 during switching is reduced.
In one embodiment, the oil storage structure is an oil guide groove provided in the main body 2.
Because the inner cavity of the main body 2 is provided with the high-pressure medium, the side wall of the main body 2 is provided with the oil guide groove, the oil guide groove can accommodate and guide at least part of the high-pressure medium, and an oil film can be formed between the valve core 1 and the main body 2 by utilizing the high-pressure medium, so that the structure is simple, and the oil seal effect is obvious.
Specifically, as shown in fig. 2 and 8-10, the oil storage structure includes a first oil guiding groove 252, and the first oil guiding groove 252 is disposed on a side of the end cover 25 facing the valve element 1.
The number of the first oil guiding grooves 252 is two, and the two first oil guiding grooves 252 are respectively and correspondingly arranged outside the second flow port 202 and outside the third flow port 203 in a surrounding manner.
It is to be understood that two first oil guiding grooves 252 are disposed corresponding to the second flow port 202 and the third flow port 203, respectively, wherein one first oil guiding groove 252 is annularly disposed outside the second flow port 202, the other first oil guiding groove 252 is annularly disposed outside the third flow port 203, and the first oil guiding groove 252 can accommodate and guide the medium.
When the switching end of the valve core 1 rotates to a position communicated with the second flow port 202, one first oil guiding groove 252 provides a medium for the circumference of the valve core 1, and when the switching end of the valve core 1 rotates to a position communicated with the third flow port 203, the other first oil guiding groove 252 provides a medium for the circumference of the valve core 1, so that an oil sealing effect of the valve core 1 in the position switching process is ensured.
Specifically, the two first oil guiding grooves 252 are communicated through linear grooves, so that a medium in one first oil guiding groove 252 enters the other first oil guiding groove 252 through the linear grooves, the number of the linear grooves is multiple, and the linear grooves are arranged at intervals in parallel.
It should be noted that, since the second flow port 202 and the third flow port 203 are both circular hole structures, the first oil guiding groove 252 is a circular groove structure, and the diameter of the first oil guiding groove 252 is slightly larger than the diameters of the second flow port 202 and the third flow port 203.
If the reversing valve needs reversing, friction is easy to occur between the valve core 1 and the valve body 20 or other parts, so that the valve core 1 has larger back pressure, the valve core 1 receives larger resistance, the reversing torque of the reversing valve is increased, and the use reliability of the reversing valve is affected.
To solve this problem, as shown in fig. 2 and 11 to 13, the leakage preventing structure of the reversing valve further includes a gasket 3, and the gasket 3 is disposed between one end of the valve body 1 near the end cover 25 and the end cover 25.
Because the end of the valve core 1 away from the first flow port 201 corresponds to the end cover 25, an axial gap is arranged between the end of the valve core 1 close to the end cover 25 and the end cover 25, and the axial gap can reduce the rotational friction resistance between the end of the valve core 1 away from the first flow port 201 and the end cover 25, so that the reversing torque of the reversing valve is reduced.
In order to avoid the need of precisely processing the valve core 1 and the end cover 25 when the axial gap is met, the gasket 3 is arranged between one end, close to the end cover 25, of the valve core 1 and the end cover 25, and the thickness of the gasket 3 is convenient to control, so that the axial gap between the valve core 1 and the end cover 25 can be processed relatively large, and then the gasket 3 with proper thickness is selected according to the actual size, so that the axial gap between the gasket 3 and the valve core 1 meets the requirement.
In this way, the thickness of the gasket 3 is selected according to the gap between the valve core 1 and the end cover 25, so that the processing difficulty of the valve core 1 and the end cover 25 is reduced, and the aim of reducing the production cost is achieved. In addition, even if the valve element 1 and the gasket 3 come into contact with each other due to vibration or the like, the gasket 3 contributes to reduction of friction resistance of the valve element 1.
In one embodiment, an oil film is formed between the switching end of the spool 1 and the shim 3.
After the gasket 3 is installed between the valve core 1 and the end cover 25, the gasket 3 corresponds to the switching end of the valve core 1, the gasket 3 and the end cover 25 are not fixedly arranged, and medium in the first oil guide groove 252 on the end cover 25 can flow onto the side surface of the gasket 3 to form an oil film between the switching end of the valve core 1 and the gasket 3, so that leakage of the valve core 1 is reduced, and meanwhile, the lubrication effect is improved.
In one embodiment, the pad 3 is made of a wear resistant material.
That is, due to vibration and other reasons, the valve core 1 and the gasket 3 may be contacted, and the gasket 3 made of wear-resistant materials is not only beneficial to reducing friction resistance, but also reduces friction loss between the valve core 1 and the gasket 3, and plays a role in prolonging service life.
Specifically, as shown in fig. 2 and 11 to 13, the gasket 3 is provided with two communication holes 31 and a mounting through hole 32, the two communication holes 31 are respectively communicated with the second flow port 202 and the third flow port 203 in correspondence, the mounting through hole 32 is provided between the two communication holes 31, the spool 1 is provided with the rotary shaft 13, and the rotary shaft 13 is provided through the mounting through hole 32.
The two communication holes 31 of the gasket 3 are respectively communicated with the second communication hole 202 and the third communication hole 203, so that the gasket 3 can function as a barrier between the valve element 1 and the end cover 25, but the gasket 3 does not affect the medium flow, and the two communication holes 202 and the third communication hole 203 are communicated with the valve element 1 through the communication holes 31. By providing the mounting through hole 32 between the two communication holes 31, the mounting through hole 32 plays a role of mounting the rotary shaft 13 of the valve element 1, the mounting through hole 32 and the shaft hole are correspondingly arranged, and the rotary shaft 13 penetrates through the mounting through hole 32 and the shaft hole so as to achieve a role of supporting the rotary center of the valve element 1.
It should be noted that, the rotary shaft 13 of the valve core 1 is inserted through the corresponding mounting through hole 32, but the end of the valve core 1 facing the end cover 25 is not inserted through the communication hole 31, otherwise, the valve core 1 is blocked in the communication hole 31, and the valve core 1 is difficult to rotate and reverse, so that a certain axial interval exists between the valve core 1 and the gasket 3, which is beneficial to the rotation and the reverse of the valve core 1.
In one embodiment, as shown in fig. 2 and 14-15, the gasket 3 is provided with a first oil guide through hole 34, and the first oil guide through hole 34 is provided in correspondence with and in communication with the first oil guide groove 252. In this way, the medium in the inner cavity of the valve body 20 can enter the first oil guiding groove 252 through the first oil guiding through hole 34, so as to supplement the medium for the first oil guiding groove 252, or the medium in the first oil guiding groove 252 flows between the gasket 3 and the switching end of the valve core 1 through the first oil guiding through hole 34, so that an oil seal is formed between the valve core 1 and the gasket 3, and the purpose of reducing leakage of the fluid such as the medium entering the valve core 1 through the axial interval between the valve core 1 and the gasket 3 is achieved.
In one embodiment, the number of the first oil guiding through holes 34 is plural, and the plural first oil guiding through holes 34 are respectively disposed along the circumferential direction of the two first oil guiding grooves 252.
The number of the first oil guiding holes 34 is sixteen, the sixteen first oil guiding holes 34 can be divided into two groups, each group is provided with eight first oil guiding holes 34, the two groups respectively correspond to the two first oil guiding grooves 252, so that eight first oil guiding holes 34 correspond to the periphery of each first oil guiding groove 252, and the circulation of medium between the first oil guiding holes 34 and the first oil guiding grooves 252 is improved.
In one embodiment, as shown in fig. 15-16, the first oil-guiding through hole 34 is at least one of a circular hole structure, an arc-shaped hole, or a kidney-shaped hole. It is to be understood that the shape of the first oil guiding through hole 34 is not limited in this embodiment, and includes, but is not limited to, a circular hole structure, an arc hole, or a kidney hole. When the first oil guiding through hole 34 is an arc hole, the center of the arc hole is collinear with the center of the first oil guiding through hole 34, and the shape of the first oil guiding through hole 34 is matched with the shape of the first oil guiding groove 252, so as to ensure the mutual communication effect of the first oil guiding through hole 34 and the first oil guiding groove 252, thereby further improving the oil sealing effect.
In one embodiment, as shown in fig. 2 and 8-10, the oil storage structure of the reversing valve leakage preventing structure further includes a second oil guiding groove 253, the second oil guiding groove 253 is disposed at one side of the end cover 25 facing the valve core 1, and the second oil guiding groove 253 is disposed outside the two first oil guiding grooves 252. The first oil guiding groove 252 and the second oil guiding groove 253 are communicated through radial grooves.
As shown in fig. 14 and 17, the gasket 3 is provided with a second oil passage hole 35, and the second oil passage hole 35 is provided in correspondence with and in communication with the second oil passage groove 253. The medium in the valve body 20 enters the second oil guiding groove 253 through the second oil guiding through hole 35, and enters the first oil guiding groove 252 through the first oil guiding through hole 34 which does not correspond to the switching end, so that the medium in the second oil guiding groove 253 can flow into the first oil guiding groove 252 through the radial groove, and the function of supplementing the medium is achieved. And the medium in the first oil guiding groove 252 enters between the switching end and the gasket 3 through the first oil guiding through hole 34 corresponding to the switching end, thereby playing roles of oil seal and lubrication.
It can be appreciated that, since the two first oil guiding grooves 252 are spaced apart, the second oil guiding groove 253 has a circular groove structure with a slotted hole structure.
In one embodiment, the number of the second oil guiding grooves 253 is plural, and the plurality of second oil guiding grooves 253 are sleeved with each other. In this way, the arrangement range of the second oil guiding groove 253 in the end cover 25 is increased, so that the plurality of circles of the second oil guiding groove 253 are arranged outside the first oil guiding groove 252 to assist in medium replenishment.
When the number of the second oil guiding grooves 253 is plural, the radial grooves extend into the outermost second oil guiding grooves 253, so that the radial grooves can realize the communication between the first oil guiding grooves 252 and the second oil guiding grooves 253 and simultaneously realize the communication between the adjacent two second oil guiding grooves 253.
If the spool 1 is in the first state, when the switching end of the spool 1 corresponds to the second flow port 202, the medium directly enters the first oil guide groove 252 through the first oil guide through hole 34 corresponding to the third flow port 203. Since the second oil guiding through hole 35 of the gasket 3 corresponds to and is communicated with the second oil guiding groove 253, a medium can directly enter the second oil guiding groove 253 through the second oil guiding through hole 35, and since the first oil guiding groove 252 is communicated with the second oil guiding groove 253 through a radial groove, the medium in the second oil guiding groove 253 enters the first oil guiding groove 252, the two parts of the medium are converged in the first oil guiding groove 252, the first oil guiding groove 252 is communicated with the first oil guiding through hole 34, the medium in the first oil guiding groove 252 enters between the valve core 1 and the gasket 3 through the first oil guiding through hole 34 corresponding to the second flow port 202, an oil seal can be formed between the valve core 1 and the gasket 3 in the first state, and the flow rate of the medium entering the valve core 1 through the axial interval between the valve core 1 and the gasket 3 is reduced, so that the leakage is reduced.
If the spool 1 is in the second state, when the switching end of the spool 1 corresponds to the third flow port 203, the medium directly enters the first oil guide groove 252 through the first oil guide through hole 34 corresponding to the second flow port 202. Since the second oil guiding through hole 35 of the gasket 3 corresponds to and is communicated with the second oil guiding groove 253, a medium can directly enter the second oil guiding groove 253 through the second oil guiding through hole 35, and since the first oil guiding groove 252 is communicated with the second oil guiding groove 253 through a radial groove, the medium in the second oil guiding groove 253 enters the first oil guiding groove 252, the two parts of the medium are converged in the first oil guiding groove 252, the first oil guiding groove 252 is communicated with the first oil guiding through hole 34, the medium in the first oil guiding groove 252 enters between the valve core 1 and the gasket 3 through the first oil guiding through hole 34 corresponding to the third flow opening 203, an oil seal can be formed between the valve core 1 and the gasket 3 in the second state, and the flow of the medium entering the valve core 1 through the axial interval between the valve core 1 and the gasket 3 can be reduced, so that the leakage is reduced.
In one embodiment, as shown in fig. 11 to 13 and 18, one of the gasket 3 and the side close to each other with the end cap 25 is provided with a positioning projection 251, and the other is provided with a positioning hole 33, and the positioning projection 251 is provided through the positioning hole 33 for positioning between the gasket 3 and the end cap 25.
Specifically, the inner side of the end cover 25 may be provided with a positioning protrusion 251, the gasket 3 is provided with a positioning hole 33 corresponding to the positioning protrusion 251, the positioning protrusion 251 is inserted into the positioning hole 33, and the positioning protrusion 251 and the positioning hole 33 are matched with each other, so that a larger position deviation between the gasket 3 and the end cover 25 is avoided, and a positioning effect is achieved. The number of the positioning protrusions 251 and the positioning holes 33 is plural, and the positioning protrusions 251 are correspondingly disposed in the positioning holes 33.
Wherein, at least two positioning projections 251 are provided corresponding to the second flow port 202 and the third flow port 203 and respectively corresponding to the two communication holes 31 for positioning the switching end of the spool 1. When the valve core 1 is switched between two working states, the positioning protrusion 251 can also position the valve core 1, and plays roles in positioning and blocking the rotation of the valve core 1 so as to ensure the stability of the position of the valve core 1 in different states. When the valve core 1 is abutted against the positioning boss 251 provided corresponding to the second communication port 202, the switching end of the valve core 1 is communicated with the second communication port 202; when the spool 1 collides with the positioning boss 251 provided corresponding to the third flow port 203, the switching end of the spool 1 communicates with the third flow port 203. It can be understood that the positioning protrusion 251 below the communication hole 31 can realize positioning of the valve core 1 and also has a bearing function on the valve core 1, so that the stability of the position of the valve core 1 is further improved.
The positioning protrusion 251 and the positioning hole 33 are not completely locked, and the gasket 3 can move in a direction approaching the end cover 25 under the high pressure of the medium, so that the gasket 3 is closely attached to the end cover 25. In one embodiment, as shown in fig. 2, the gasket 3 further includes an adjustment tab 4, the adjustment tab 4 being disposed between the end of the valve spool 1 remote from the end cap 25 and the first flange 21.
In order to avoid the need of precisely processing the valve core 1 and the first flange 21 when the axial gap is met, the adjusting piece 4 is arranged between one end, far away from the end cover 25, of the valve core 1 and the first flange 21, and the thickness of the adjusting piece 4 is convenient to control, so that the axial gap between the valve core 1 and the first flange 21 can be processed relatively large, and then the adjusting piece 4 with proper thickness is selected according to the actual size, so that the axial gap between the adjusting piece 4 and the valve core 1 meets the requirement.
In this way, the thickness of the adjusting piece 4 can be selected according to the gap between the valve core 1 and the first flange 21, so that the processing difficulty of the valve core 1 and the first flange 21 is reduced, and the aim of reducing the production cost is achieved. In addition, even if the valve element 1 and the regulator piece 4 come into contact with each other due to vibration or the like, the regulator piece 4 contributes to reduction of the frictional resistance of the valve element 1.
In one embodiment, the adjusting piece 4 is in a circular ring structure, the center of the adjusting piece 4 is provided with a central hole, and the first flow port 201 is communicated with the first through hole of the first flange 21 through the central hole of the adjusting piece 4, so that the adjusting piece 4 can play a role of blocking between the valve core 1 and the first flange 21, but the adjusting piece 4 cannot influence medium circulation.
It should be noted herein that the reversing valve leak-proof structure shown in the drawings and described in this specification is merely one example of the principles of the present invention. It will be clearly understood by those of ordinary skill in the art that the principles of the present invention are not limited to any details or any components of the devices shown in the drawings or described in the specification.
It should be noted herein that the reversing valve leak-proof structure shown in the drawings and described in this specification is merely one example of the principles of the present invention. It will be clearly understood by those of ordinary skill in the art that the principles of the present invention are not limited to any details or any components of the devices shown in the drawings or described in the specification.
It should be understood that the invention is not limited in its application to the details of construction and the arrangement of components set forth in the specification. The invention is capable of other embodiments and of being practiced and carried out in various ways. The foregoing variations and modifications are intended to fall within the scope of the present invention. It should be understood that the invention disclosed and defined in this specification extends to all alternative combinations of two or more of the individual features mentioned or evident from the text and/or drawings. All of these different combinations constitute various alternative aspects of the present invention. The embodiments described in this specification illustrate the best mode known for carrying out the invention and will enable those skilled in the art to make and use the invention.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This invention is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. The specification and example embodiments are to be considered exemplary only, with a true scope and spirit of the invention being indicated by the following claims.
It is to be understood that the invention is not limited to the precise arrangements and instrumentalities shown in the drawings, which have been described above, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the invention is limited only by the appended claims.

Claims (13)

1.一种换向阀防泄漏结构，其特征在于，所述换向阀包括主体和阀芯，所述阀芯转动设置于所述主体内，使所述阀芯的切换端进行位置切换，所述换向阀防泄漏结构包括：1. A reversing valve anti-leakage structure, characterized in that the reversing valve comprises a main body and a valve core, the valve core is rotatably arranged in the main body, so that the switching end of the valve core switches positions, and the reversing valve anti-leakage structure comprises: 储油结构，设置于所述主体朝向所述阀芯的切换端的一侧并与所述阀芯的切换端对应设置，所述储油结构被配置为用于储存至少部分所述主体内腔的介质，以在所述阀芯的切换端和所述主体之间形成油膜，用于所述阀芯的油封和润滑。An oil storage structure is arranged on a side of the main body facing the switching end of the valve core and corresponding to the switching end of the valve core. The oil storage structure is configured to store at least a portion of the medium in the inner cavity of the main body to form an oil film between the switching end of the valve core and the main body for oil sealing and lubrication of the valve core. 2.根据权利要求1所述的换向阀防泄漏结构，其特征在于，所述储油结构为设置于所述主体的导油槽。2 . The reversing valve anti-leakage structure according to claim 1 , wherein the oil storage structure is an oil guide groove arranged on the main body. 3.一种换向阀，其特征在于，包括：3. A reversing valve, characterized by comprising: 主体，所述主体设置有相互连通的第一流通口、第二流通口、第三流通口和第四流通口；A main body, wherein the main body is provided with a first flow opening, a second flow opening, a third flow opening and a fourth flow opening which are interconnected; 阀芯，转动设置于所述主体内，所述阀芯的一端与所述第一流通口连通，所述阀芯的另一端为所述切换端，用于选择性与所述第二流通口或所述第三流通口连通；A valve core is rotatably disposed in the main body, one end of the valve core is communicated with the first flow port, and the other end of the valve core is the switching end, which is used to selectively communicate with the second flow port or the third flow port; 权利要求1-2任一项所述的换向阀防泄漏结构，设置于所述阀芯的另一端与与其对应的主体侧壁之间。The reversing valve anti-leakage structure described in any one of claims 1 to 2 is arranged between the other end of the valve core and the main body side wall corresponding thereto. 4.根据权利要求3所述的换向阀，其特征在于，所述主体包括：4. The reversing valve according to claim 3, characterized in that the main body comprises: 阀体，所述第一流通口和所述第四流通口设置于所述阀体；a valve body, wherein the first flow port and the fourth flow port are arranged on the valve body; 端盖，设置于所述阀体远离所述第一流通口的一侧，所述第二流通口和所述第三流通口设置于所述端盖；an end cover, arranged on a side of the valve body away from the first flow opening, wherein the second flow opening and the third flow opening are arranged on the end cover; 其中，所述换向阀防泄漏结构的所述储油结构设置于所述端盖朝向所述阀芯的一侧。Wherein, the oil storage structure of the reversing valve anti-leakage structure is arranged on a side of the end cover facing the valve core. 5.根据权利要求4所述的换向阀，其特征在于，所述换向阀防泄漏结构的所述储油结构包括：5. The reversing valve according to claim 4, characterized in that the oil storage structure of the reversing valve anti-leakage structure comprises: 第一导油槽，设置于所述端盖朝向所述阀芯的一侧，所述第一导油槽的数量为两个，两个所述第一导油槽分别对应环设于所述第二流通口的外部和所述第三流通口的外部。The first oil guide groove is arranged on the side of the end cover facing the valve core. There are two first oil guide grooves, which are respectively arranged on the outside of the second flow port and the outside of the third flow port. 6.根据权利要求5所述的换向阀，其特征在于，所述换向阀防泄漏结构还包括垫片，所述垫片设置于所述阀芯靠近所述端盖的一端和所述端盖之间，所述垫片设置有第一导油通孔，所述第一导油通孔与所述第一导油槽对应设置并与其相连通，所述油膜形成于所述阀芯的切换端和所述垫片之间。6. The reversing valve according to claim 5 is characterized in that the anti-leakage structure of the reversing valve also includes a gasket, which is arranged between one end of the valve core close to the end cover and the end cover, and the gasket is provided with a first oil guide hole, and the first oil guide hole is arranged corresponding to and connected to the first oil guide groove, and the oil film is formed between the switching end of the valve core and the gasket. 7.根据权利要求6所述的换向阀，其特征在于，所述换向阀防泄漏结构的所述储油结构还包括：7. The reversing valve according to claim 6, characterized in that the oil storage structure of the reversing valve anti-leakage structure further comprises: 第二导油槽，设置于所述端盖朝向所述阀芯的一侧，所述第二导油槽环设于两个所述第一导油槽的外部，所述第一导油槽和所述第二导油槽连通；A second oil guide groove is arranged on a side of the end cover facing the valve core, the second oil guide groove is arranged outside the two first oil guide grooves, and the first oil guide groove is connected to the second oil guide groove; 所述垫片设置有第二导油通孔，所述第二导油通孔与所述第二导油槽对应设置并与其相连通。The gasket is provided with a second oil guiding through hole, and the second oil guiding through hole is arranged corresponding to and communicated with the second oil guiding groove. 8.根据权利要求7所述的换向阀防泄漏结构，其特征在于，所述第二导油槽的数量为多个，多个所述第二导油槽相互套设，多个所述第二导油槽之间相互连通。8 . The reversing valve anti-leakage structure according to claim 7 , characterized in that there are a plurality of second oil guide grooves, the plurality of second oil guide grooves are mutually nested, and the plurality of second oil guide grooves are interconnected. 9.根据权利要求6所述的换向阀防泄漏结构，其特征在于，所述第一导油通孔的数量为多个，多个所述第一导油通孔分别沿两个所述第一导油槽的周向设置。9 . The reversing valve anti-leakage structure according to claim 6 , wherein the number of the first oil guiding through holes is plural, and the plurality of the first oil guiding through holes are respectively arranged along the circumference of the two first oil guiding grooves. 10.根据权利要求6所述的换向阀防泄漏结构，其特征在于，所述第一导油通孔为圆孔结构、弧形孔或腰形孔中至少之一。10 . The anti-leakage structure of the reversing valve according to claim 6 , wherein the first oil-conducting through hole is at least one of a circular hole structure, an arc-shaped hole or a waist-shaped hole. 11.根据权利要求6所述的换向阀，其特征在于，所述垫片与所述端盖彼此靠近的一侧其中一个设置有定位凸起，另一个设置有定位孔，所述定位凸起穿设于所述定位孔，用于所述垫片和所述端盖之间的定位。11. The reversing valve according to claim 6 is characterized in that one of the sides where the gasket and the end cover are close to each other is provided with a positioning protrusion, and the other is provided with a positioning hole, and the positioning protrusion is passed through the positioning hole for positioning between the gasket and the end cover. 12.根据权利要求11所述的换向阀，其特征在于，至少两个所述定位凸起对应所述第二流通口和所述第三流通口设置，用于所述阀芯的切换端的定位。12 . The reversing valve according to claim 11 , wherein at least two of the positioning protrusions are provided corresponding to the second flow port and the third flow port, and are used for positioning the switching end of the valve core. 13.根据权利要求6所述的换向阀，其特征在于，所述垫片设置有两个连通孔和安装通孔，两个所述连通孔分别对应与所述第二流通口和第三流通口连通，所述安装通孔设置于两个所述连通孔之间，所述阀芯设置有旋转轴，所述旋转轴穿设于所述安装通孔。13. The reversing valve according to claim 6 is characterized in that the gasket is provided with two connecting holes and a mounting through hole, the two connecting holes are respectively connected to the second flow port and the third flow port, the mounting through hole is arranged between the two connecting holes, and the valve core is provided with a rotating shaft, and the rotating shaft passes through the mounting through hole.
CN202310210468.2A 2023-02-28 2023-02-28 A reversing valve anti-leakage structure and reversing valve Pending CN118564687A (en)

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CN202310210468.2A CN118564687A (en) 2023-02-28 2023-02-28 A reversing valve anti-leakage structure and reversing valve

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Application Number Priority Date Filing Date Title
CN202310210468.2A CN118564687A (en) 2023-02-28 2023-02-28 A reversing valve anti-leakage structure and reversing valve

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CN118564687A true CN118564687A (en) 2024-08-30

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CN202310210468.2A Pending CN118564687A (en) 2023-02-28 2023-02-28 A reversing valve anti-leakage structure and reversing valve

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