CN220059999U - Composite sealing system with flow guiding structure - Google Patents
Composite sealing system with flow guiding structure Download PDFInfo
- Publication number
- CN220059999U CN220059999U CN202320836797.3U CN202320836797U CN220059999U CN 220059999 U CN220059999 U CN 220059999U CN 202320836797 U CN202320836797 U CN 202320836797U CN 220059999 U CN220059999 U CN 220059999U
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- sealing
- sealing ring
- main shaft
- storage box
- flow guiding
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- 238000007789 sealing Methods 0.000 title claims abstract description 127
- 239000002131 composite material Substances 0.000 title claims abstract description 20
- 239000010865 sewage Substances 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 3
- 239000003921 oil Substances 0.000 claims description 11
- 239000010687 lubricating oil Substances 0.000 claims description 8
- 230000000694 effects Effects 0.000 abstract description 7
- 238000005299 abrasion Methods 0.000 abstract description 6
- 230000009545 invasion Effects 0.000 abstract description 5
- 230000007547 defect Effects 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000010963 304 stainless steel Substances 0.000 description 2
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 description 2
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 2
- 230000004323 axial length Effects 0.000 description 2
- 229910000423 chromium oxide Inorganic materials 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses a composite sealing system with a flow guiding structure, and aims to solve the defect of short service life of a sealing system of a pump body. The utility model comprises the following steps: the pump body is internally provided with a main shaft; a pump cover; the sewage storage box is connected between the pump body and the pump cover, and one end of the main shaft is rotatably arranged on the sewage storage box; the main seal is installed between main shaft and the dirt storage box, and fixed connection sealing ring on the main shaft forms the clearance sealing surface between sealing ring outer wall and the dirt storage box, forms the wind between sealing ring terminal surface and the pump body and presses the chamber, is equipped with the whirlwind inclined plane on the sealing ring terminal surface, and the whirlwind inclined plane is arranged in the wind and is pressed the chamber, is equipped with the water conservancy diversion hole of intercommunication between wind and pressing the chamber and dirt storage box on the sealing ring. The composite sealing system with the flow guiding structure can prolong the service life of the sealing system, effectively prevent the invasion of harmful media, delay the abrasion of a gap sealing surface, avoid influencing the gap sealing effect due to the increase of the gap, and ensure that the oil cavity and the media are not easy to pollute each other.
Description
Technical Field
The utility model relates to a pump body technology, in particular to a composite sealing system with a flow guiding structure.
Background
At present, the sealing technology is widely applied to mechanical equipment such as vacuum pumps, centrifugal pumps and the like, particularly in the working conditions of particles, liquid and corrosive media in the chemical industry, and the sealing technology directly influences the service life of the mechanical equipment. The existing sealing technology has the following problems: 1. the medium with particles enters the friction surface to quickly damage the seal; 2. the sublimated gel substance of the medium with the solvent can accumulate on the shaft and creep to the sealing surface along the axial direction so as to damage the seal; 3. sometimes, the working condition has instantaneous high pressure and liquid medium impacts the seal, so that the seal is damaged and liquid enters an oil cavity, so that lubricating oil is emulsified and a bearing is invalid; 4. the leaked lubricant through the seal may contaminate the material.
Disclosure of Invention
In order to overcome the defects, the utility model provides a composite sealing system with a flow guide structure, which can prolong the service life of the sealing system, effectively prevent the invasion of harmful media, delay the abrasion of a gap sealing surface, avoid the influence on the gap sealing effect caused by the increase of a gap, and ensure that an oil cavity and the media are not easy to pollute each other.
In order to solve the technical problems, the utility model adopts the following technical scheme: a composite seal system with a flow directing structure, comprising:
the pump body is internally provided with a main shaft;
a pump cover;
the sewage storage box is connected between the pump body and the pump cover, and one end of the main shaft is rotatably arranged on the sewage storage box;
the main seal is installed between main shaft and the dirt storage box, fixed connection sealing ring on the main shaft, the sealing ring is arranged in between the pump body and the main seal, form the clearance seal face between sealing ring outer wall and the dirt storage box, form the wind pressure chamber between sealing ring terminal surface and the pump body, be equipped with the whirlwind inclined plane on the sealing ring terminal surface, the whirlwind inclined plane is arranged in the wind pressure chamber, is equipped with the water conservancy diversion hole of intercommunication between wind pressure chamber and dirt storage box on the sealing ring.
When the pump body works, the sealing ring rotates along with the main shaft, and when the cyclone inclined plane arranged on the end face of the sealing ring rotates, axial wind pressure is generated, so that harmful medium on the side of the pump body can be effectively prevented from invading. The gap sealing surface can effectively prevent the passage of harmful media. The sealing ring is provided with the diversion hole, when the instantaneous pressure of the medium end at the pump body side is overlarge, harmful medium can pass through the diversion hole and be thrown into the storage box under the action of centrifugal force, the pressure of a part of the medium end is released, and the diversion hole plays a role in reducing the harmful medium to pass through the gap sealing surface, so that the abrasion of the gap sealing surface is delayed, and the influence on the gap sealing effect due to the increase of the gap is avoided. The lubricating oil leaked from the main seal part flows into the dirt storage box to be collected, so that medium materials are prevented from being polluted.
The composite sealing system with the flow guiding structure can prolong the service life of the sealing system, effectively prevent the invasion of harmful media, delay the abrasion of a gap sealing surface, avoid influencing the gap sealing effect due to the increase of the gap, and ensure that the oil cavity and the media are not easy to pollute each other.
Preferably, the dirt storage chamber and the mounting hole are arranged on the dirt storage box, the annular groove is arranged on the inner wall of the mounting hole, the main seal and the sealing ring are both arranged between the mounting hole and the main shaft, the sealing ring is provided with an extending ring extending outwards, the edge of the extending ring is provided with a baffle ring, the extending ring penetrates through the annular groove, and the baffle ring is arranged in the dirt storage chamber and covers the opening of the annular groove.
The baffle ring is arranged close to the inner wall of the dirt storage cavity at the opening position of the annular groove, so that the medium in the dirt storage cavity is not easy to pass through the space between the baffle ring and the inner wall of the dirt storage cavity, and therefore, the medium in the dirt storage cavity is not easy to flow to the main seal.
Preferably, the diversion hole comprises an axial section and a radial section, and the axial section is arranged in an outward inclined manner far away from the direction of the wind pressure cavity.
The inclined arrangement of the axial sections makes the medium in the diversion holes more easily thrown outwards.
Preferably, a plurality of zigzag bulges are uniformly distributed on the end face of the sealing ring, and the end faces of the bulges are obliquely arranged to form cyclone inclined planes.
The zigzag protruding end face inclines to form a cyclone inclined plane, so that the processing is convenient, the structural strength is good, the damage is difficult, and the service life is long.
Preferably, a step surface is arranged on the main shaft and corresponds to the sealing ring, and one end of the sealing ring is attached to the step surface.
The step surface plays a good role in positioning the sealing ring.
Preferably, the main seal comprises a framework and a plurality of sealing lips arranged on the framework, wherein one part of the end parts of the sealing lips are bent towards the pump body side to form a sealing edge, the other part of the end parts of the sealing lips are bent towards the pump cover side to form a sealing edge, and the sealing edge is in sealing fit with the outer wall of the main shaft.
The main seal of the structure has good sealing effect.
Preferably, a shaft sleeve is arranged on the outer wall of the main shaft, and the main sealing sleeve is arranged on the shaft sleeve.
The shaft sleeve is made of 304 spray-coated chromium oxide, and has excellent wear resistance, long service life and outstanding corrosion resistance after surface polishing treatment.
Preferably, the two ends of the dirt storage tank are respectively provided with a bearing seat and an end cover, the end cover is connected with the main shaft in a sleeved mode, one end of the sealing ring is sleeved between the end cover and the main shaft, the wind pressure cavity is arranged between the end cover and the end part of the sealing ring, the main sealing sleeve is arranged on the bearing seat, the bearing is arranged on the bearing seat, and the bearing is connected with the main shaft in a sleeved mode.
The arrangement of the bearing seat and the end cover facilitates the connection of the main shaft and the dirt storage box.
Preferably, the upper part of the storage box is provided with a one-way air inlet valve, and the lower part of the storage box is provided with a drain valve.
When the pressure of the medium end is reduced, the axial wind pressure generated by the cyclone inclined plane on the sealing ring can cause the sewage storage tank to generate negative pressure, and the one-way air inlet valve is opened at the moment, so that the outside air enters the sewage storage tank, and the cyclone inclined plane on the sealing ring generates continuous wind pressure to block the invasion of the harmful medium. The blow-down valve is convenient for discharging dirt in the dirt storage box.
Preferably, an oil cavity is arranged in the pump cover, and lubricating oil is loaded in the oil cavity.
Lubricating oil is loaded in the pump cover and is convenient to flow to a lubricating position.
Compared with the prior art, the utility model has the beneficial effects that: (1) The sewage storage cavity is built in the sewage storage tank to form a buffer zone, so that lubricating oil and media in the pump cover are difficult to pollute each other, and the special axial wind pressure of the sealing ring, gap sealing and a diversion decompression structure of a diversion hole are utilized, so that the three-lip tetrafluoro main seal enables the final work in a clean environment, the sealing service life is greatly prolonged, and the service life can be prolonged by 10-12 months generally; (2) The composite sealing system with the flow guiding structure can prolong the service life of the sealing system, effectively prevent the invasion of harmful media, delay the abrasion of a gap sealing surface, avoid the influence on the gap sealing effect caused by the increase of the gap, and prevent the mutual pollution of an oil cavity and the media.
Drawings
FIG. 1 is a schematic structural view of embodiment 1 of the present utility model;
FIG. 2 is a schematic structural view of a seal ring of embodiment 1 of the present utility model;
in the figure: 1. pump body, 2, main shaft, 3, pump cover, 4, oil pocket, 5, dirt storage tank, 6, main seal, 7, sealing ring, 8, clearance sealing surface, 9, wind pressure chamber, 10, whirlwind inclined plane, 11, guiding hole, 12, axial section, 13, radial section, 14, protruding, 15, dirt storage chamber, 16, mounting hole, 17, ring channel, 18, extension ring, 19, baffle ring, 20, one-way admission valve, 21, blow-down valve, 22, bearing frame, 23, end cover, 24, axle sleeve, 25, holding ring.
Detailed Description
The technical scheme of the utility model is further specifically described by the following specific embodiments with reference to the accompanying drawings:
examples: a composite seal system with a flow directing structure (see fig. 1, 2), comprising:
the pump body 1 is internally provided with a main shaft 2, and the pump body can be a centrifugal pump body or a vacuum pump body;
the pump cover 3 is internally provided with an oil cavity 4, and lubricating oil is loaded in the oil cavity;
the dirt storage box 5 is connected between the pump body and the pump cover, and one end of the main shaft is rotatably arranged on the dirt storage box;
the main seal 6 is installed between the main shaft and the dirt storage box, the main seal is a three-lip tetrafluoro main seal, the main shaft is fixedly connected with the sealing ring 7, the sealing ring is arranged between the pump body and the main seal, a gap sealing surface 8 is formed between the outer wall of the sealing ring and the dirt storage box, a wind pressure cavity 9 is formed between the end face of the sealing ring and the pump body, a cyclone inclined surface 10 is arranged on the end face of the sealing ring, the cyclone inclined surface is arranged in the wind pressure cavity, and a flow guide hole 11 communicated between the wind pressure cavity and the dirt storage box is formed in the sealing ring. The diversion hole comprises an axial section 12 and a radial section 13, wherein the axial section is arranged in an outwards inclined way far away from the direction of the wind pressure cavity, and the radial section is arranged in a radial way. A plurality of zigzag bulges 14 are uniformly distributed on the end face of the sealing ring, and the end face of each bulge is obliquely arranged to form a cyclone inclined plane. The main shaft is provided with a step surface at the position corresponding to the sealing ring, and one end of the sealing ring is attached to the step surface.
And a clearance sealing surface of 0.1mm-0.5mm is kept between the outer wall of the sealing ring and the dirt storage tank. In this embodiment, a gap sealing surface of 0.3mm is maintained between the outer wall of the sealing ring and the dirt storage tank. The dirt storage tank is provided with a dirt storage cavity 15 and a mounting hole 16, an annular groove 17 is formed in the inner wall of the mounting hole, the main seal and the sealing ring are both arranged between the mounting hole and the main shaft, the inner wall of the sealing ring is of a step-shaped structure, an extending ring 18 extending outwards is arranged on the sealing ring, the edge of the extending ring is provided with a baffle ring 19, the extending ring penetrates through the annular groove, the baffle ring is arranged in the dirt storage cavity and covers the opening of the annular groove, and the radial section of the flow guide hole penetrates through the outer wall of the baffle ring. The axial length of the baffle ring is greater than the axial length of the extension ring. The upper part of the storage box is provided with a one-way air inlet valve 20, the lower part of the storage box is provided with a blow-down valve 21, and the one-way air inlet valve and the air outlet valve are both communicated with the dirt storage cavity.
The two ends of the dirt storage box are respectively provided with a bearing seat 22 and an end cover 23, and sealing rings are respectively arranged between the bearing seat and the dirt storage box and between the end cover and the dirt storage box. The bearing seat and the end cover are respectively connected with two ends of the mounting hole on the dirt storage box. The end cover is connected with the main shaft suit, one end of the sealing ring is sleeved between the end cover and the main shaft, the wind pressure cavity is arranged between the end cover and the end part of the sealing ring, the main sealing sleeve is arranged on the bearing seat, the bearing is arranged on the bearing seat, and the bearing is connected with the main shaft suit. A shaft sleeve 24 is arranged on the outer wall of the main shaft, and the main seal sleeve is arranged on the shaft sleeve and is arranged between the shaft sleeve and the bearing seat. A positioning ring 25 is arranged between the bearing inner ring and the shaft sleeve, and two ends of the shaft sleeve are respectively abutted with the sealing ring and the positioning ring. The shaft sleeve is made of 304 stainless steel, and chromium oxide is sprayed on the surface of the shaft sleeve. The main seal comprises a framework and a plurality of seal lips arranged on the framework, wherein one part of the seal lips are bent towards the pump body side to form a seal edge, and the other part of the seal lips are bent towards the pump cover side to form a seal edge, and the seal edge is in sealing fit on the outer wall of the main shaft. The main seal framework is made of 304 stainless steel, and the seal lip is made of polytetrafluoroethylene.
When the pump body works, the sealing ring rotates along with the main shaft, and when the cyclone inclined plane arranged on the end face of the sealing ring rotates, axial wind pressure is generated, so that harmful medium on the side of the pump body can be effectively prevented from invading. The gap sealing surface can effectively prevent the passage of harmful media. The sealing ring is provided with the diversion hole, when the instantaneous pressure of the medium end at the pump body side is overlarge, harmful medium can pass through the diversion hole and be thrown into the storage box under the action of centrifugal force, the pressure of a part of the medium end is released, and the diversion hole plays a role in reducing the harmful medium to pass through the gap sealing surface, so that the abrasion of the gap sealing surface is delayed, and the influence on the gap sealing effect due to the increase of the gap is avoided. The lubricating oil leaked from the main seal part flows into the dirt storage box to be collected, so that medium materials are prevented from being polluted.
The above-described embodiments are merely preferred embodiments of the present utility model, and the present utility model is not limited in any way, and other variations and modifications may be made without departing from the technical aspects set forth in the claims.
Claims (10)
1. A composite seal system with a flow directing structure, comprising:
the pump body is internally provided with a main shaft;
a pump cover;
the sewage storage box is connected between the pump body and the pump cover, and one end of the main shaft is rotatably arranged on the sewage storage box;
the main seal is installed between main shaft and the dirt storage box, fixed connection sealing ring on the main shaft, the sealing ring is arranged in between the pump body and the main seal, form the clearance seal face between sealing ring outer wall and the dirt storage box, form the wind pressure chamber between sealing ring terminal surface and the pump body, be equipped with the whirlwind inclined plane on the sealing ring terminal surface, the whirlwind inclined plane is arranged in the wind pressure chamber, is equipped with the water conservancy diversion hole of intercommunication between wind pressure chamber and dirt storage box on the sealing ring.
2. The composite sealing system with the flow guiding structure according to claim 1, wherein the dirt storage chamber and the mounting hole are formed in the dirt storage chamber, an annular groove is formed in the inner wall of the mounting hole, the main seal and the sealing ring are both arranged between the mounting hole and the main shaft, an extending ring extending outwards is arranged on the sealing ring, a baffle ring is arranged at the edge of the extending ring, the extending ring penetrates through the annular groove, and the baffle ring is arranged in the dirt storage chamber and covers an opening of the annular groove.
3. The composite sealing system with a flow guiding structure according to claim 1, wherein the flow guiding hole comprises an axial section and a radial section, and the axial section is arranged in an outward inclined manner in a direction away from the wind pressure chamber.
4. The composite sealing system with the flow guiding structure as claimed in claim 1, wherein a plurality of saw-tooth-shaped bulges are uniformly distributed on the end face of the sealing ring, and the end faces of the bulges are obliquely arranged to form cyclone inclined planes.
5. The composite sealing system with the flow guiding structure as claimed in claim 1, wherein the main shaft and the corresponding position of the sealing ring are provided with step surfaces, and one end of the sealing ring is attached to the step surfaces.
6. The composite sealing system with a flow guiding structure according to claim 1, wherein the main seal comprises a framework and a plurality of sealing lips arranged on the framework, one part of the end parts of the sealing lips are bent towards the pump body side to form a sealing edge, the other part of the end parts of the sealing lips are bent towards the pump cover side to form a sealing edge, and the sealing edge is in sealing fit with the outer wall of the main shaft.
7. The composite seal system with a flow guiding structure of claim 1, wherein the shaft sleeve is mounted on the outer wall of the main shaft, and the main seal sleeve is mounted on the shaft sleeve.
8. The composite sealing system with the flow guiding structure according to claim 1, wherein bearing seats and end covers are respectively arranged at two ends of the dirt storage tank, the end covers are connected with the main shaft in a sleeved mode, one end of the sealing ring is sleeved between the end covers and the main shaft, the wind pressure cavity is arranged between the end covers and the end parts of the sealing ring, the main sealing sleeve is arranged on the bearing seats, bearings are arranged on the bearing seats, and the bearings are connected with the main shaft in a sleeved mode.
9. The composite sealing system with a flow guiding structure according to any one of claims 1 to 8, wherein the upper part of the storage box is provided with a one-way air inlet valve, and the lower part of the storage box is provided with a blow-down valve.
10. The composite seal system with a flow guiding structure according to any one of claims 1 to 8, wherein an oil chamber is provided in the pump cover, and lubricating oil is loaded in the oil chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320836797.3U CN220059999U (en) | 2023-04-14 | 2023-04-14 | Composite sealing system with flow guiding structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320836797.3U CN220059999U (en) | 2023-04-14 | 2023-04-14 | Composite sealing system with flow guiding structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220059999U true CN220059999U (en) | 2023-11-21 |
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ID=88785132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320836797.3U Active CN220059999U (en) | 2023-04-14 | 2023-04-14 | Composite sealing system with flow guiding structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220059999U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116792333A (en) * | 2023-04-14 | 2023-09-22 | 杭州新安江工业泵有限公司 | Pump body sealing structure |
| CN120384714A (en) * | 2025-06-27 | 2025-07-29 | 中国煤炭地质总局勘查研究总院 | A leak-proof wellhead device for deep geological storage of mine water |
-
2023
- 2023-04-14 CN CN202320836797.3U patent/CN220059999U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116792333A (en) * | 2023-04-14 | 2023-09-22 | 杭州新安江工业泵有限公司 | Pump body sealing structure |
| CN120384714A (en) * | 2025-06-27 | 2025-07-29 | 中国煤炭地质总局勘查研究总院 | A leak-proof wellhead device for deep geological storage of mine water |
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