CN218934699U - Water pump with check valve structure - Google Patents

Abstract

The utility model relates to a water pump with a check valve structure, which comprises an upper cover, a check assembly, a lower cover, an air pump assembly and a motor, wherein the upper cover is provided with a check valve; the upper cover, the check assembly, the lower cover, the air pump assembly and the motor are sequentially connected; the check assembly comprises a pressure spring, a water stopping sheet, a water stopping cover and a check valve, wherein the upper cover, the pressure spring, the water stopping sheet, the water stopping cover and the lower cover are sequentially connected, the water inlet groove is formed in one face, facing away from the upper cover, of the lower cover, the water inlet groove is formed in the groove bottom of the water inlet groove, the water inlet hole is communicated with the water inlet groove, the check valve is movably inserted into the mounting hole, the check valve is movably sealed to form the water inlet hole, the lower cover is further provided with a water outlet hole, the water outlet hole penetrates through the lower cover, the water inlet groove is communicated with the water outlet hole, a first through hole is formed in the water stopping cover and is communicated with the water outlet hole, a second through hole is formed in the water stopping sheet and is communicated with the first through hole, an elastic block is arranged in the second through hole and is connected with the side wall of the second through hole, and the elastic block is movably sealed to the first through hole.

Description

Water pump with check valve structure

Technical Field

The utility model relates to the technical field of water pumps, in particular to a water pump with a check valve structure.

Background

A water pump is a machine that delivers or pressurizes a liquid. It transmits mechanical energy of prime mover or other external energy to liquid to increase its energy, and is mainly used for conveying liquid including water, oil, acid-alkali liquor, emulsion and suspoemulsion.

Most of the existing water pumps have imperfect structure of non-return flow, so that after the water pump stops working, liquid remained in the water outlet pipe can return. Therefore, after the water pump finishes working, the liquid in the water pump cannot be cleaned up, so that the next use of the water pump is affected.

Disclosure of Invention

The present utility model is directed to a water pump having a check valve structure to solve the above-mentioned problems of the related art.

The technical scheme of the utility model is that the water pump with the check valve structure comprises an upper cover, a check assembly, a lower cover, an air pump assembly and a motor; the upper cover, the check assembly, the lower cover, the air pump assembly and the motor are sequentially connected; the check assembly comprises a pressure spring, a water stopping sheet, a water stopping cover and a check valve, wherein the upper cover, the pressure spring, the water stopping sheet, the water stopping cover and the lower cover are sequentially connected and arranged, one surface of the lower cover, which is opposite to the upper cover, is provided with a water inlet groove, the bottom of the water inlet groove is provided with a water inlet hole and a mounting hole, the water inlet hole is communicated with the water inlet groove, the check valve is movably inserted into the mounting hole, the check valve is movably sealed with the water inlet hole, the lower cover is also provided with a water outlet hole, the water outlet hole penetrates through the lower cover, the water inlet groove is communicated with the water outlet hole, the water stopping cover is provided with a first through hole, the first through hole is communicated with the water outlet hole, the water stopping sheet is provided with a second through hole, the second through hole is communicated with the first through hole, the second through hole is internally provided with an elastic block, the elastic block is connected with the side wall of the second through hole, the elastic block is movably sealed with the first through hole, and the first through hole is connected with one end of the pressure spring; the upper cover is provided with a water inlet, a water outlet and a water outlet channel, the pressure spring is positioned in the water outlet channel and connected with the side wall of the water outlet channel, the water outlet is communicated with one side of the water outlet channel, the other side of the water outlet channel is communicated with the first through hole, and the water inlet is communicated with the water inlet channel; the motor is in driving connection with the air pump component, the air pump component drives the check valve to move, and meanwhile the air pump component is used for manufacturing air pressure difference.

In one embodiment, the check assembly further comprises a sealing valve plate, one face of the sealing valve plate is connected with the water stopping cover, the other face of the sealing valve plate is connected with the lower cover, a third through hole is formed in the sealing valve plate, an elastic piece is arranged on the side wall of the third through hole in a protruding mode, the third through hole is communicated with the water outlet, and the elastic piece is movably sealed with the water outlet.

In one embodiment, a surface of the water stop cover facing the sealing valve plate is convexly provided with a plurality of first fixing blocks, one end of each first fixing block is circumferentially arranged around the first through hole, and the other end of each first fixing block is inserted into the third through hole.

In one embodiment, a plurality of first limiting blocks are arranged on one surface of the lower cover, which faces the sealing valve plate, in a protruding mode, a plurality of first limiting grooves are formed in the edge position of the sealing valve plate, and each first limiting block is arranged in one first limiting groove.

In one embodiment, a plurality of second limiting blocks are arranged on one surface of the water stop cover, which faces the water stop sheet, in a protruding mode, a plurality of second limiting grooves are formed in the edge position of the water stop sheet, and each second limiting block is arranged in one second limiting groove.

In one embodiment, the water stop cover is provided with a second fixing block in a protruding mode around the first through hole, the second fixing block is inserted into the second through hole on the water stop sheet, and the second fixing block is abutted to the side wall of the second through hole.

In one embodiment, a plurality of third limiting blocks are arranged on one surface of the upper cover, which faces the water stop sheet, in a protruding mode, each third limiting block is arranged around the water outlet channel, and each third limiting block is used for clamping and connecting the pressure spring.

In one embodiment, the air pump assembly comprises an upper shell, an air bag piece, a swing frame, a transmission shaft, an eccentric wheel and a lower shell, wherein the upper shell is connected with the lower shell, the air bag piece, the swing frame, the transmission shaft and the eccentric wheel are sequentially connected, a containing cavity is formed by connecting the upper shell with the lower shell, the air bag piece, the swing frame, the transmission shaft and the eccentric wheel are all arranged in the containing cavity, the upper shell is provided with an air vent, the air bag piece is connected with the side wall of the water inlet groove in a butt mode through the air vent, the lower shell is provided with a transmission port, and the motor is connected with the eccentric wheel in a driving mode through the transmission port.

In one embodiment, the air pump assembly further comprises a gasket, the gasket is arranged on the eccentric wheel, and the transmission shaft penetrates through the gasket to be connected with the eccentric wheel.

In one embodiment, the water pump with the check valve structure further comprises a long screw and a bolt, wherein the long screw is used for sequentially connecting and fixing the upper cover, the check assembly, the lower cover and the air pump assembly, and the bolt is used for connecting and fixing the air pump assembly and the motor.

The beneficial effects provided by the utility model are as follows: a check valve is arranged in the water inlet groove, and the air pump component drives the check valve to movably seal the water inlet hole in the water groove. Specifically, when the water pump absorbs liquid, the air pump component can manufacture air pressure difference, so that the check valve is far away from the water inlet groove, and the liquid can enter the water inlet groove from the water inlet hole; when the water pump drains, the air pump component will extrude the space in the water inlet tank, the check valve will be against the tank bottom of the water inlet tank, and the check valve will seal the water inlet hole at the same time, so that the liquid can only flow out of the water inlet tank from the water outlet hole. And a water stopping cover is arranged on one side of the communication hole, and a first through hole is formed in the water stopping cover, so that liquid enters the first through hole. And the other side of the first through hole is provided with a water stop sheet, the water stop sheet is provided with an elastic block, and the elastic block movably seals the first through hole through the elasticity of a pressure spring. The elastic block is extruded through the liquid in the first through hole, so that the liquid passes through the first through hole to the water outlet channel and is finally discharged out of the water pump. When the water pump stops working, the elastic block can be tightly sealed with the first through hole by the elastic force of the pressure spring, so that the effect of preventing liquid from flowing back is achieved. The water pump with the check valve structure has the advantage of well preventing liquid from flowing back by arranging the check component.

Drawings

FIG. 1 is a schematic perspective view of a water pump with a check valve structure according to an embodiment;

FIG. 2 is a schematic view showing an exploded perspective view of a water pump having a check valve structure according to an embodiment;

fig. 3 is a schematic exploded perspective view of a water pump having a check valve structure in another direction according to an embodiment.

In the drawings, 10, a water pump with a check valve structure; 100. an upper cover; 110. a water inlet; 120. a water outlet; 130. a water outlet channel; 140. a third limiting block; 200. a non-return assembly; 210. a pressure spring; 220. a water stop sheet; 221. a second through hole; 222. an elastic block; 223. the second limit groove; 230. a water stop cover; 231. a first through hole; 232. a first fixed block; 233. a second limiting block; 234. a second fixed block; 240. a check valve; 250. a sealing valve plate; 251. a third through hole; 252. a spring plate; 253. a first limit groove; 300. a lower cover; 310. a water inlet tank; 311. a water inlet hole; 312. a mounting hole; 320. a water outlet hole; 330. a first limiting block; 400. an air pump assembly; 410. an upper housing; 411. a vent; 420. an air bag member; 421. a small air sac; 430. a swing frame; 440. a transmission shaft; 450. an eccentric wheel; 460. a lower housing; 461. a transmission port; 470. a gasket; 500. a motor; 600. a long screw; 700. and (5) a bolt.

Detailed Description

It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other. The technical solution of the present utility model will be further described below with reference to the accompanying drawings of the embodiments of the present utility model, and the present utility model is not limited to the following specific embodiments.

It should be understood that the same or similar reference numerals in the drawings of the embodiments correspond to the same or similar components. In the description of the present utility model, it should be understood that, if there are terms such as "upper", "lower", "front", "rear", "left", "right", "top", "bottom", etc., that indicate an azimuth or a positional relationship based on the directions or the positional relationships shown in the drawings, it is only for convenience of describing the present utility model and simplifying the description, but not for indicating or suggesting that the apparatus or element to be referred to must have a specific azimuth, be constructed and operated in a specific azimuth, so that the terms describing the positional relationship in the drawings are merely for exemplary illustration and should not be construed as limitations of the present patent, and that the specific meanings of the terms described above may be understood by those skilled in the art according to specific circumstances.

In one embodiment, as shown in fig. 1 and 2, a water pump 10 having a check valve structure includes an upper cover 100, a check assembly 200, a lower cover 300, an air pump assembly 400, and a motor 500; the upper cover 100, the check assembly 200, the lower cover 300, the air pump assembly 400, and the motor 500 are sequentially connected to each other; the check assembly 200 comprises a pressure spring 210, a water stop sheet 220, a water stop cover 230 and a check valve 240, wherein the pressure spring 210, the water stop sheet 220, the water stop cover 230 and the lower cover 300 are sequentially connected, a water inlet groove 310 is formed on one surface of the lower cover 300, which is opposite to the upper cover 100, a water inlet hole 311 and a mounting hole 312 are formed at the bottom of the water inlet groove 310, the water inlet hole 311 is communicated with the water inlet groove 310, the check valve 240 is movably inserted into the mounting hole 312, the check valve 240 movably seals the water inlet hole 311, a water outlet hole 320 is formed in the lower cover 300, the water outlet hole 320 penetrates through the lower cover 300, the water inlet groove 310 is communicated with the water outlet hole 320, a first through hole 231 is formed in the water stop cover 230, a second through hole 221 is formed in the water stop sheet 220 and is communicated with the first through hole 231, the second through hole 221 is movably connected with the elastic block 222, and the elastic block 222 is movably connected with the other end of the pressure spring 210, and the elastic block 222 is movably connected with the other end of the elastic block 222; the upper cover 100 is provided with a water inlet 110, a water outlet 120 and a water outlet channel 130, the pressure spring 210 is positioned in the water outlet channel 130, the pressure spring 210 is connected with the side wall of the water outlet channel 130, the water outlet 120 is communicated with one side of the water outlet channel 130, the other side of the water outlet channel 130 is communicated with the first through hole 231, and the water inlet 110 is communicated with the water inlet channel 310; the motor 500 is in driving connection with the air pump assembly 400, the air pump assembly 400 drives the check valve 240 to move, and the air pump assembly 400 is used for manufacturing an air pressure difference.

Specifically, the check valve 240 is disposed in the water inlet tank 310, and the air pump assembly 400 drives the check valve 240 to movably seal the water inlet hole 311 in the water tank. When the water pump 10 having the check valve structure sucks the liquid, the air pump assembly 400 will make an air pressure difference such that the check valve 240 is away from the water inlet tank 310, thereby allowing the liquid to enter the water inlet tank 310 from the water inlet hole 311; when the water pump 10 having the check valve structure discharges water, the air pump assembly 400 will press the space inside the water inlet tank 310, the check valve 240 will be against the bottom of the water inlet tank 310, and the check valve 240 will seal the water inlet hole 311 so that the liquid can only flow out of the water inlet tank 310 from the water outlet hole 320. And the water stop cover 230 is disposed at one side of the communication hole, and the first through hole 231 is formed in the water stop cover 230, so that the liquid can enter the first through hole 231. And the other side of the first through hole 231 is provided with the water stop sheet 220, the water stop sheet 220 is provided with the elastic block 222, and the elastic block 222 movably seals the first through hole 231 by the elastic force of the compression spring 210. The elastic block 222 is extruded by the liquid in the first through hole 231, so that the liquid passes through the first through hole 231 into the water outlet channel 130 and finally is discharged out of the water pump 10 having the check valve structure. And when the water pump 10 having the check valve structure stops operating, the elastic force of the compression spring 210 can tightly seal the elastic block 222 to the first through hole 231, thereby preventing the backflow of the liquid. The water pump 10 with the check valve structure has the effect of well preventing liquid from flowing back by arranging the check assembly 200.

In order to further improve the backflow preventing effect of the water pump 10 with the check valve structure, in one embodiment, as shown in fig. 2 and 3, the check assembly 200 further includes a sealing valve plate 250, one surface of the sealing valve plate 250 is connected with the water stop cover 230, the other surface of the sealing valve plate 250 is connected with the lower cover 300, a third through hole 251 is formed in the sealing valve plate 250, a spring plate 252 is protruding from a side wall of the third through hole 251, the third through hole 251 is communicated with the water outlet hole 320, and the spring plate 252 movably seals the water outlet hole 320. Specifically, the spring 252 is a metal spring 252, which deforms when being stressed, but returns to its original shape after not being stressed. The sealing valve plate 250 is disposed between the water stop cover 230 and the lower cover 300, and the elastic sheet 252 is disposed on the sealing valve plate 250. When the air pump assembly 400 works, the liquid pressure in the water inlet tank 310 is high, and the liquid in the water inlet tank 310 passes through the water outlet hole 320 and lifts up the elastic sheet 252, so that the elastic sheet 252 deforms, and the liquid in the water inlet tank 310 can be pumped out through the water outlet hole 320. When the air pump assembly 400 stops working, the elastic piece 252 seals the water blowing hole, and the liquid is placed to flow back into the water inlet tank 310. By the above arrangement, the backflow preventing effect of the water pump 10 having the check valve structure is improved.

In order to align the first through hole 231 with the third through hole 251, in one embodiment, as shown in fig. 2, a surface of the water stop cover 230 facing the sealing valve plate 250 is provided with a plurality of first fixing blocks 232 in a protruding manner, one end of each first fixing block 232 is disposed around the first through hole 231, and the other end of each first fixing block 232 is inserted into the third through hole 251. Specifically, the first fixing block 232 is provided with three blocks, and three first fixing blocks 232 are equidistantly and circumferentially arranged around the first through hole 231. When the water stop cover 230 is connected to the sealing valve plate 250, the three first fixing blocks 232 are inserted into the third through holes 251, so that the first through holes 231 and the third through holes 251 can be aligned and communicated.

In order to enable the lower cover 300 and the sealing valve plate 250 to be aligned, in one embodiment, as shown in fig. 2 and 3, a plurality of first limiting blocks 330 are convexly disposed on a surface of the lower cover 300 facing the sealing valve plate 250, and a plurality of first limiting grooves 253 are disposed at edge positions of the sealing valve plate 250, and each first limiting block 330 is disposed in one of the first limiting grooves 253. Specifically, three first limiting blocks 330 are provided, and three first limiting grooves 253 are provided. The three first limiting blocks 330 are disposed on the lower cover 300 at equal intervals, and the first limiting grooves 253 are formed in a matching manner with the first limiting blocks 330. When each first limiting block 330 is inserted into one of the first limiting grooves 253, the lower cover 300 can be aligned with the sealing valve plate 250, and the lower cover 300 can be stably aligned with the sealing valve plate 250 through the limiting action of the first limiting block 330, so that no dislocation phenomenon occurs.

In order to enable the water stop cover 230 and the water stop sheet 220 to be aligned and connected, in one embodiment, as shown in fig. 2 and 3, a plurality of second limiting blocks 233 are convexly disposed on a surface of the water stop cover 230 facing the water stop sheet 220, and a plurality of second limiting grooves 223 are disposed at edge positions of the water stop sheet 220, and each second limiting block 233 is disposed in one of the second limiting grooves 223. Specifically, three second limiting blocks 233 are provided, and three second limiting grooves 223 are provided. The third second limiting blocks 233 are disposed on the water stop cover 230 at equal intervals, and the second limiting grooves 223 are formed in a matching manner with the second limiting blocks 233. When each second limiting block 233 is inserted into one of the second limiting grooves 223, the water stop cover 230 can be aligned with the water stop sheet 220, and the water stop cover 230 and the water stop sheet 220 can be stably aligned and connected by the limiting action of the second limiting block 233, so that no dislocation phenomenon occurs.

In order to align the first through hole 231 with the second through hole 221, in one embodiment, as shown in fig. 3, the water stop cover 230 is provided with a second fixing block 234 protruding around the first through hole 231, the second fixing block 234 is inserted into the second through hole 221 on the water stop sheet 220, and the second fixing block 234 abuts against a sidewall of the second through hole 221. Specifically, the second fixing block 234 is provided with three blocks, and three second fixing blocks 234 are equidistantly and circumferentially arranged around the first through hole 231. When the water stop cover 230 is connected to the water stop sheet 220, the three second fixing blocks 234 are inserted into the second through holes 221, so that the first through holes 231 and the second through holes 221 can be aligned and communicate.

In order to enable the compression spring 210 to be disposed in the upper cover 100 in a limited and fixed manner, in an embodiment, as shown in fig. 2 and 3, a plurality of third limiting blocks 140 are disposed on a surface of the upper cover 100 facing the water stop sheet 220 in a protruding manner, each third limiting block 140 is disposed around the water outlet channel 130, and each third limiting block 140 is configured to clamp the compression spring 210. Specifically, three third limiting blocks 140 are provided, and three third limiting blocks 140 are equidistantly and circumferentially arranged around the water outlet channel 130. And the compression spring 210 can be adaptively clamped in the three third limiting blocks 140. By this arrangement, it is ensured that the compression spring 210 does not shift during the compression deformation.

In one embodiment, as shown in fig. 2 and 3, the air pump assembly 400 includes an upper housing 410, an air bag member 420, a swing frame 430, a transmission shaft 440, an eccentric wheel 450 and a lower housing 460, the upper housing 410 and the lower housing 460 are connected and arranged, the air bag member 420, the swing frame 430, the transmission shaft 440 and the eccentric wheel 450 are sequentially connected and arranged, a containing cavity is formed in the connection of the upper housing 410 and the lower housing 460, the air bag member 420, the swing frame 430, the transmission shaft 440 and the eccentric wheel 450 are all arranged in the containing cavity, the upper housing 410 is provided with an air vent 411, the air bag member 420 is in abutting connection with the side wall of the water inlet tank 310 through the air vent 411, the lower housing 460 is provided with a transmission port 461, and the motor 500 is in driving connection with the eccentric wheel 450 through the transmission port 461. Specifically, the air bag member 420 has a plurality of small air bags 421, and the air bag member 420 is disposed on the swing frame 430. The eccentric wheel 450 is driven to rotate by the motor 500, the eccentric wheel 450 drives the swing frame 430 to rotate by the transmission shaft 440, and the swing frame 430 sequentially presses each small air bag 421 on the air bag; and after the deformation of each small air bag 421 is recovered, an air pressure difference is generated, so that the liquid is sucked into the water inlet tank 310, and then the liquid in the water inlet tank 310 is pumped out of the water pump 10 with the check valve structure through the water outlet flow passage by squeezing each small air bag 421.

In this embodiment, the air bag member 420 has three small air bags 421 thereon, and the three small air bags 421 are uniformly distributed. The three small air bags 421 are all made of rubber.

In order to enable the eccentric 450 to smoothly rotate the driving shaft 440, in one embodiment, as shown in fig. 2, the air pump assembly 400 further includes a spacer 470, the spacer 470 is disposed on the eccentric 450, and the driving shaft 440 is connected to the eccentric 450 through the spacer 470. Specifically, a circular hole is formed in the middle of the washer 470, the transmission shaft 440 is inserted into the eccentric wheel 450 after passing through the circular hole on the washer 470, and the washer 470 is disposed in the eccentric shaft. Through the above arrangement, the stability of the eccentric wheel 450 when driving the driving shaft 440 can be improved, so that the driving shaft 440 can uniformly and stably rotate, and the swing frame 430 can better press the air bag member 420.

In order to stably mount the water pump 10 having the check valve structure, in one embodiment, as shown in fig. 2 and 3, the water pump 10 having the check valve structure further includes a long screw 600 and a bolt 700, the long screw 600 being used to sequentially connect and fix the upper cover 100, the check assembly 200, the lower cover 300, and the air pump assembly 400, and the bolt 700 being used to connect and fix the air pump assembly 400 and the motor 500. Specifically, the upper cover 100, the check assembly 200, and the lower cover 300 are sequentially penetrated by the long screw 600, and the long screw 600 is screwed to the lower case 460 in the air pump assembly 400, and the motor 500 is connected to the lower case 460 by a bolt 700. By the above arrangement, the components in the water pump 10 having the check valve structure can be firmly connected while also facilitating assembly and disassembly.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims (10)

1. The water pump with the check valve structure is characterized by comprising an upper cover, a check assembly, a lower cover, an air pump assembly and a motor;

the upper cover, the check assembly, the lower cover, the air pump assembly and the motor are sequentially connected;

the check assembly comprises a pressure spring, a water stopping sheet, a water stopping cover and a check valve, wherein the upper cover, the pressure spring, the water stopping sheet, the water stopping cover and the lower cover are sequentially connected and arranged, one surface of the lower cover, which is opposite to the upper cover, is provided with a water inlet groove, the bottom of the water inlet groove is provided with a water inlet hole and a mounting hole, the water inlet hole is communicated with the water inlet groove, the check valve is movably inserted into the mounting hole, the check valve is movably sealed with the water inlet hole, the lower cover is also provided with a water outlet hole, the water outlet hole penetrates through the lower cover, the water inlet groove is communicated with the water outlet hole, the water stopping cover is provided with a first through hole, the first through hole is communicated with the water outlet hole, the water stopping sheet is provided with a second through hole, the second through hole is communicated with the first through hole, the second through hole is internally provided with an elastic block, the elastic block is connected with the side wall of the second through hole, the elastic block is movably sealed with the first through hole, and the first through hole is connected with one end of the pressure spring;

the upper cover is provided with a water inlet, a water outlet and a water outlet channel, the pressure spring is positioned in the water outlet channel and connected with the side wall of the water outlet channel, the water outlet is communicated with one side of the water outlet channel, the other side of the water outlet channel is communicated with the first through hole, and the water inlet is communicated with the water inlet channel;

the motor is in driving connection with the air pump component, the air pump component drives the check valve to move, and meanwhile the air pump component is used for manufacturing air pressure difference.

2. The water pump with the check valve structure according to claim 1, wherein the check assembly further comprises a sealing valve plate, one surface of the sealing valve plate is connected with the water stop cover, the other surface of the sealing valve plate is connected with the lower cover, a third through hole is formed in the sealing valve plate, a spring piece is arranged on the protrusion of the side wall of the third through hole, the third through hole is communicated with the water outlet, and the spring piece movably seals the water outlet.

3. The water pump with the check valve structure according to claim 2, wherein a surface of the water stop cover facing the sealing valve plate is convexly provided with a plurality of first fixing blocks, one end of each first fixing block is circumferentially arranged around the first through hole, and the other end of each first fixing block is inserted into the third through hole.

4. The water pump with the check valve structure according to claim 2, wherein a plurality of first limiting blocks are arranged on one surface of the lower cover, which faces the sealing valve plate, in a protruding mode, a plurality of first limiting grooves are formed in the edge position of the sealing valve plate, and each first limiting block is arranged in one first limiting groove.

5. The water pump with the check valve structure according to claim 1, wherein a plurality of second limiting blocks are arranged on one surface of the water stop cover, which faces the water stop sheet, in a protruding mode, a plurality of second limiting grooves are formed in the edge position of the water stop sheet, and each second limiting block is arranged in one second limiting groove.

6. The water pump with the check valve structure according to claim 1, wherein the water stop cover is provided with a second fixing block protruding around the first through hole, the second fixing block is inserted into the second through hole on the water stop sheet, and the second fixing block abuts against a side wall of the second through hole.

7. The water pump with the check valve structure according to claim 1, wherein a plurality of third limiting blocks are convexly arranged on one surface of the upper cover facing the water stop sheet, each third limiting block is arranged around the water outlet channel, and each third limiting block is used for clamping and connecting the pressure spring.

8. The water pump with the check valve structure according to claim 1, wherein the air pump assembly comprises an upper shell, an air bag piece, a swing frame, a transmission shaft, an eccentric wheel and a lower shell, the upper shell and the lower shell are connected and arranged, the air bag piece, the swing frame, the transmission shaft and the eccentric wheel are sequentially connected and arranged, a containing cavity is formed inside the connection of the upper shell and the lower shell, the air bag piece, the swing frame, the transmission shaft and the eccentric wheel are all arranged in the containing cavity, the upper shell is provided with an air vent, the air bag piece is in butt joint with the side wall of the water inlet groove through the air vent, the lower shell is provided with a transmission port, and the motor is in driving connection with the eccentric wheel through the transmission port.

9. The water pump with check valve structure of claim 8, wherein the air pump assembly further comprises a gasket disposed on the eccentric, the drive shaft passing through the gasket to connect with the eccentric.

10. The water pump with check valve structure according to any one of claims 1 to 9, further comprising a long screw for connecting and fixing the upper cover, the check assembly, the lower cover, and the air pump assembly in order, and a bolt for connecting and fixing the air pump assembly and the motor.

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