CN206830506U - Drain pump with tight seal construction - Google Patents

Abstract

Drainage pump with closely seal structure, including the pump casing, with pump casing sealing connection forms the lid shell that holds the chamber, be equipped with on the lid shell with hold the inlet tube and the drain pipe of chamber intercommunication, just be equipped with on the pump casing the opening with hold the relative installation cavity in chamber, be equipped with in the installation cavity and stretch out to the drainage that holds chamber department rotates the piece, the opening part of installation cavity is equipped with and is used for the closing cap open-ended shutoff piece, hold the intracavity still be equipped with the shutoff piece is connected and is used for sealed and shutoff piece junction with the seal assembly of lid shell and pump casing junction. The installation cavity of pump casing and the intercommunication mouth department that holds the chamber of drainage set up seal assembly, and this seal assembly one can be sealed the junction of pump casing and lid, and two can be further sealed the opening of installation cavity, form multiple seal structure, effectively protect the sealing performance of this product, improve job stabilization nature.

Description

Drain pump with tight seal construction

【Technical field】

The utility model relates to a drainage pump, in particular to a drainage pump with a tightly sealed structure.

【Background technique】

The drainage pump is used to discharge the liquid in the pond or large liquid storage tank. The principle is that the rotating water flies away from the impeller under the action of centrifugal force. After the water in the pump is thrown out, the central part of the impeller forms a Vacuum area. The water from the water source is pressed into the water inlet pipe through the pipe network under the action of atmospheric pressure, and then discharged from the drain pipe. The circulation is endless like this, just can realize continuous pumping. Due to the need for high-speed rotating impeller to drive the internal water to rotate, whether the impeller is connected to an external power supply or a built-in power supply, the sealing performance between the impeller and the drainage chamber is particularly important. If the seal is insufficient, there will be water leakage in the container, resulting in internal leakage or drainage pump. damaged and cannot be used normally.

【Content of invention】

In order to solve the problem of insufficient sealing performance of the drainage pump in the prior art, the utility model provides a drainage pump with a tight sealing structure.

The utility model is achieved through the following technical solutions:

A drainage pump with a tightly sealed structure, including a pump casing, and a cover casing that is sealed and connected with the pump casing to form an accommodation cavity. The cover casing is provided with a water inlet pipe and a drainage pipe that communicate with the accommodation cavity. The pump casing is provided with an installation cavity with an opening opposite to the accommodation cavity, and a drainage rotating member protruding to the accommodation cavity is provided in the installation cavity, and the opening of the installation cavity is provided with a cover for sealing As for the blocking part of the opening, a sealing assembly connected with the blocking part and used for sealing the connection of the sealing part and the connection of the cover shell and the pump housing is also provided in the accommodating chamber.

As for the drainage pump with a tight sealing structure as described above, the drainage rotating member includes a rotating shaft arranged in the installation cavity and protruding into the accommodating cavity, an impeller connected to the extended end of the rotating shaft, and a A driving part that drives the rotating shaft to rotate in the installation cavity.

According to the drainage pump with a tight sealing structure as described above, the sealing assembly includes a sealing cover connected to the sealing member, a sealing member arranged between the sealing cover and the sealing member, and the sealing A through hole for the rotating shaft to pass through is provided in the middle part of the component, the sealing cover and the sealing component.

In the drainage pump with a tight seal structure as described above, the end surface of the sealing member opposite to the sealing cover is provided with helical teeth coaxially and circumferentially distributed with its axis, and the end of the sealing cover opposite to the sealing member There are meshing teeth that cooperate with the helical teeth, and the seal is located inside the helical teeth.

As for the drainage pump with a tightly sealed structure as described above, the end surface of the pump housing opposite to the cover shell is provided with an annular protrusion, and the sealing cover is provided with a The annular groove, and the outer side of the annular protrusion is also sleeved with a first sealing ring pressed by the sealing cover on the end surface of the pump housing.

In the drainage pump with a tight sealing structure as described above, an annular sealing groove is opened on the inner side wall of the annular protrusion, and a second sealing ring is arranged in the annular sealing groove, and the inner side of the annular groove of the sealing cover The wall cooperates with the inner side wall of the annular protrusion to fix the second sealing ring.

In the drainage pump with a tight seal structure as described above, the sealing member is in the shape of a truncated cone as a whole, and its cross-sectional shape is a truncated circular shape whose cross-section gradually becomes smaller toward the impeller, and the peripheral side wall of the sealing member is inwardly concave. The side wall, and the small section end of the sealing member protrudes from the through hole in the middle part of the sealing cover.

According to the drainage pump with a tight sealing structure as described above, the sealing member is made of soft material.

According to the drainage pump with a tight sealing structure as described above, a second sealing member sleeved on the rotating shaft is further provided between the impeller and the rotating shaft.

Compared with the prior art, the utility model has the following advantages:

1. The utility model provides a drainage pump with a tightly sealed structure. A sealing assembly is provided at the communication port between the installation chamber of the pump casing and the drainage chamber, and the sealing assembly can connect the pump casing and the cover. Second, the opening of the installation cavity can be further sealed to form a multiple sealing structure, which is beneficial to prevent the water in the storage cavity from overflowing from the connection or entering the installation cavity during the working process of the drainage pump, effectively protecting the product. Sealing performance, improve working stability.

2. A first sealing ring is connected between the sealing cover of the present invention and the pump casing, and a second sealing ring is arranged between the ring-shaped raised part. The double sealing ring structure can effectively prevent the water in the accommodating chamber from entering to the inner side of the sealing cover, and the opening of the power supply installation cavity is opposite to the inner side of the sealing cover, thereby preventing water from entering the installation cavity of the pump housing and increasing the sealing performance of the sealing cover.

3. The seal between the sealing member and the sealing cover of the utility model is in the shape of a truncated cone, and its peripheral side wall is a concave arc-shaped side wall. After the sealing cover and the sealing member are installed, the sealing member can be effectively pressed. It is tight on the rotating shaft to prevent the water in the containing chamber from entering the installation chamber of the pump housing from the rotating shaft, further improving the sealing performance of the product.

【Description of drawings】

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some implementations of the present invention. For example, those of ordinary skill in the art can also obtain other drawings based on these drawings on the premise of not paying creative efforts.

Fig. 1 is a structural schematic diagram 1 of the drainage pump with tight sealing structure of the present invention;

Fig. 2 is a structural explosion schematic diagram 1 of the utility model drainage pump;

Fig. 3 is a structural explosion schematic diagram II of the utility model drainage pump;

FIG. 4 is a cross-sectional view along line A-A of FIG. 1 .

【detailed description】

In order to make the technical problems, technical solutions and beneficial effects solved by the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

The utility model is achieved through the following technical solutions:

As shown in Figures 1 to 4, a drainage pump with a tightly sealed structure includes a pump casing 1 and a cover casing 2 that is sealed and connected with the pump casing 1 to form a housing cavity 201, and the cover casing 2 is provided with a The water inlet pipe 202 and the drain pipe 203 communicated with the accommodation cavity, and the pump casing 1 is provided with an installation cavity 101 with an opening opposite to the accommodation cavity 201, and the feature is that the installation cavity 101 is provided with an extension Out to the drainage rotating member at the accommodation chamber 201, the opening of the installation chamber 101 is provided with a blocking member 3 for covering the opening, and the accommodation chamber 201 is also provided with the sealing member 3 3 and is used to seal the sealing assembly at the joint with the sealing member 3 and the joint between the cover shell 2 and the pump housing 1 . The utility model provides a drainage pump with a tightly sealed structure. A sealing assembly is arranged at the communication port between the installation chamber of the pump casing and the drainage chamber, and the sealing assembly can seal the connection between the pump casing and the cover. Second, the opening of the installation cavity can be further sealed to form a multiple sealing structure, which is beneficial to prevent the water in the storage cavity from overflowing from the connection or entering the installation cavity during the working process of the drainage pump, effectively protecting the sealing performance of the product , Improve job stability.

The installation cavity 101 is provided with a rotating shaft 401 protruding into the accommodating cavity 201 , and a driving component for driving the rotating shaft 401 to rotate. The impeller 402 on the protruding end of the rotating shaft 401, the impeller, the rotating shaft and the driving part form the drainage rotating part. Since the rotating shaft needs to be driven by the driving part to rotate, the sealing between the space inside the installation cavity and the accommodating cavity is particularly important. If it goes into the installation cavity, it will damage the driving parts inside, resulting in damage to the drain pump. The driving part can be realized by means of a driving motor, a brushless motor, and the like. Using the working principle of centrifugal drainage, relying on the high-speed rotating impeller, the liquid obtains energy under the action of inertial centrifugal force to increase the pressure. Before the pump works, the pump body and the water inlet pipe must be filled with water to prevent cavitation. When the impeller rotates quickly, the blades make the water rotate quickly, and the rotating water flies away from the impeller under the action of centrifugal force. After the water in the pump is thrown out, the central part of the impeller forms a vacuum area. The water from the water source is pressed into the water inlet pipe under the action of atmospheric pressure (or water pressure). Circulation like this, just can realize continuous pumping, water is discharged.

The sealing assembly includes a sealing cover 501 connected to the sealing member 3, a sealing member 502 arranged between the sealing cover 501 and the sealing member 3, the sealing member 3, the sealing cover 501 and the sealing member The middle part of 502 is provided with a through hole through which the rotating shaft 401 passes. The end surface of the sealing member 3 opposite to the sealing cover 501 is provided with helical teeth 301 coaxial with its axis and circumferentially distributed, and the end of the sealing cover 501 opposite to the sealing member 3 is provided with the inclined teeth 301. The tooth 301 engages with the tooth 5011 , and the seal 502 is located inside the helical tooth 301 . The end surface of the pump housing 1 opposite to the cover shell 2 is provided with an annular protruding portion 102, and the sealing cover 501 is provided with an annular groove that is compatible with the annular protruding portion 102, and the A first sealing ring 601 pressed against the end surface of the pump casing 1 by the sealing cover 501 is sheathed on the outer side of the annular protruding portion 102 . An annular sealing groove is provided on the inner side wall of the annular protrusion 102, and a second sealing ring 602 is arranged in the annular sealing groove, and the inner side wall of the annular groove of the sealing cover 501 and the annular protrusion 102 The inner wall of the second sealing ring 602 is fixed by cooperation. The difference from the existing sealing method is that there are multiple seals formed between the sealing cover and the pump casing of this product, and the first sealing ring connected between the sealing cover and the pump casing is used, and the ring-shaped raised part is set There is a second sealing ring, and the mating connection between the blocking member and the sealing member is also conducive to sealing. The multiple sealing ring structure can effectively prevent the water in the accommodating chamber from entering the inner side of the sealing cover, and the power supply is installed The opening of the cavity is opposite to the inner side of the sealing cover, thereby preventing water from entering the installation cavity of the pump housing and increasing the sealing performance of the sealing cover.

The sealing member 502 is in the shape of a truncated cone as a whole, and its cross-sectional shape is a truncated circular shape that gradually becomes smaller toward the direction of the impeller 402. The section end protrudes from the through hole in the middle of the sealing cover 501 . The seal 502 is a software material. A second sealing member 4021 sleeved on the rotating shaft 401 is further provided between the impeller 402 and the rotating shaft 401 . The seal located between the sealing member and the sealing cover is in the shape of a truncated cone, and its peripheral side wall is a concave arc-shaped side wall. After the sealing cover and the sealing member are installed, the sealing member can be effectively pressed on the rotating shaft. Prevent the water in the housing chamber from entering the installation chamber of the pump housing from the rotating shaft, further improving the sealing performance of the product.

The pump casing 1 is located on the outer wall of the installation cavity and is also provided with a double slider positioning structure 103. The two sliders are arranged on the outer wall along the circumference of the installation cavity at intervals, which is conducive to quickly and accurately positioning and installing the product in use. Second, it also increases the beauty of this product, making this product more competitive in the market.

The utility model provides a drainage pump with a tightly sealed structure. A sealing assembly is arranged at the communication port between the installation chamber of the pump casing and the drainage chamber, and the sealing assembly can seal the connection between the pump casing and the cover. Second, the opening of the installation cavity can be further sealed to form a multiple sealing structure, which is beneficial to prevent the water in the storage cavity from overflowing from the connection or entering the installation cavity during the working process of the drainage pump, effectively protecting the sealing performance of the product , Improve job stability. Moreover, a first sealing ring is connected between the sealing cover and the pump housing, and a second sealing ring is arranged between the annular raised part. The double sealing ring structure can effectively prevent the water in the accommodating cavity from entering the sealing cover. The inner side, and the opening of the power supply installation cavity is opposite to the inner side of the sealing cover, thereby preventing water from entering the installation cavity of the pump housing and increasing the sealing performance of the sealing cover. Moreover, the seal between the sealing member and the sealing cover of this product is in the shape of a truncated cone, and its peripheral side wall is a concave arc-shaped side wall. After the sealing cover and the sealing member are installed, the sealing member can be effectively pressed on the On the rotating shaft, it prevents the water in the containing chamber from entering the installation chamber of the pump casing from the rotating shaft, further improving the sealing performance of the product.

The foregoing is one or more implementations provided in conjunction with specific content, and it is not considered that the specific implementation of the present utility model is limited to these descriptions. Any similarity or similarity to the method and structure of the present utility model, or some technical deduction or replacement based on the concept of the present utility model should be regarded as the protection scope of the present utility model.

Claims (9)

1. A drainage pump with a tightly sealed structure, including a pump casing (1), and a cover casing (2) that is sealed and connected with the pump casing (1) to form an accommodation cavity (201), and the cover casing (2) is A water inlet pipe (202) and a drain pipe (203) communicating with the accommodating cavity are provided, and an installation cavity (101) with an opening opposite to the accommodating cavity (201) is provided on the pump housing (1), It is characterized in that, the installation cavity (101) is provided with a drainage rotating member protruding to the accommodation cavity (201), and the opening of the installation cavity (101) is provided with a seal for sealing the opening. A blocking piece (3), the housing chamber (201) is also provided with a connection with the blocking piece (3) and is used to seal the connection with the blocking piece (3) and the cover shell (2) and the pump Seal assembly at the junction of the housing (1). 2. The drainage pump with tight sealing structure according to claim 1, characterized in that, the drainage rotating member includes a rotating shaft ( 401), an impeller (402) connected to the extended end of the rotating shaft (401), and a driving component arranged in the installation cavity (101) to drive the rotating shaft (401) to rotate. 3. The drainage pump with a tight sealing structure according to claim 2, characterized in that, the sealing assembly includes a sealing cover (501) connected to the blocking member (3), arranged on the sealing cover ( 501) and the sealing member (502) between the blocking member (3), the middle part of the sealing member (3), the sealing cover (501) and the sealing member (502) are all provided with the rotating shaft (401 ) through the through hole. 4. The drainage pump with a tight sealing structure according to claim 3, characterized in that, one end surface of the sealing member (3) opposite to the sealing cover (501) is provided with a coaxial circumferential distribution with its axis. Helical teeth (301), the end of the sealing cover (501) opposite to the blocking member (3) is provided with meshing teeth (5011) that cooperate with the helical teeth (301), and the sealing member (502 ) is located inside the helical teeth (301). 5. The drainage pump with tight sealing structure according to claim 4, characterized in that, the end surface of the pump casing (1) opposite to the cover casing (2) is protruded with an annular protrusion (102 ), the sealing cover (501) is provided with an annular groove matching with the annular protrusion (102), and the outer side of the annular protrusion (102) is also sleeved by the sealing cover ( 501) Compress the first sealing ring (601) on the end face of the pump housing (1). 6. The drainage pump with tight sealing structure according to claim 5, characterized in that, an annular sealing groove is opened on the inner side wall of the annular protrusion (102), and a second sealing groove is arranged in the annular sealing groove. As for the sealing ring (602), the inner side wall of the annular groove of the sealing cover (501) cooperates with the inner side wall of the annular protrusion (102) to fix the second sealing ring (602). 7. The drainage pump with a tightly sealed structure according to claim 6, characterized in that, the seal (502) is in the shape of a truncated cone as a whole, and its cross-sectional shape is a truncated cone whose cross-section gradually becomes smaller toward the impeller (402) The peripheral side wall of the sealing member (502) is an arc-shaped side wall concave inward, and the small section end of the sealing member (502) protrudes from the through hole in the middle part of the sealing cover (501). 8. The drainage pump with tight seal structure according to claim 7, characterized in that, the seal (502) is made of soft material. 9. The drainage pump with a tight sealing structure according to claim 2, characterized in that, between the impeller (402) and the rotating shaft (401), there is also a set sleeved on the rotating shaft (401). Second seal (4021).