CN220101447U

CN220101447U - Intelligent washing machine piston pump

Info

Publication number: CN220101447U
Application number: CN202321236689.9U
Authority: CN
Inventors: 徐定善; 陈松; 朱家祥; 邵元彪
Original assignee: Anhui Yihua Electric Appliance Co ltd
Current assignee: Anhui Yihua Electric Appliance Co ltd
Priority date: 2023-05-18
Filing date: 2023-05-18
Publication date: 2023-11-28
Anticipated expiration: 2033-05-18

Abstract

The utility model discloses an intelligent washing machine piston pump, comprising: the pump shell is provided with a piston cavity and a driving cavity which are communicated with each other; a motor seat is arranged in the driving cavity, and a baffle is arranged on the outer side of the motor seat; the baffle and the pump shell enclose a diversion channel communicated with a drainage port on the piston cavity and the pump shell; the pump head is arranged on the piston cavity, a liquid inlet nozzle and a liquid outlet nozzle are arranged on the pump head, and a liquid inlet check valve and a liquid outlet check valve are respectively arranged on the liquid inlet nozzle and the liquid outlet nozzle; the motor is arranged on the bottom surface of the pump shell, and a motor shaft of the motor penetrates through the motor seat; the cam is connected with the motor shaft and is rotatably arranged on the motor seat; a cam sealing ring is arranged between the cam and the motor seat; the piston assembly is arranged in the piston cavity, connected with the cam and arranged along the piston cavity in a moving way along with the rotation of the cam. According to the utility model, the tightness between the driving cavity and the motor is improved through the baffle and the cam sealing ring, and the leaked liquid is discharged through the diversion channel and the diversion port, so that the motor is prevented from being damaged, and the service life of the piston pump is prolonged.

Description

Intelligent washing machine piston pump

Technical Field

The utility model relates to the technical field of intelligent washing machines, in particular to an intelligent washing machine piston pump.

Background

Along with the development of technology and the improvement of living standard of people, intelligent washing machines capable of automatically adding detergents are increasingly popular with people. The intelligent washing machine can automatically match the optimal dosage of the detergent according to the material and the weight of clothes in the washing machine after putting the clothes into the intelligent washing machine, so that the problems of uncleanness in washing the clothes, residual detergent and the like caused by the insufficient detergent and excessive influence of the detergent are avoided, and the convenience in washing is greatly improved.

The most critical step in the intelligent washing machine throwing box is a piston pump, and the piston pump mainly plays roles of liquid pumping and liquid discharging. At present, the phenomenon that the internal rubber part is worn and leaked in the running process of the piston pump on the market possibly occurs, and leaked washing liquid flows onto the motor to influence the service life of the piston pump, so that the service time of the washing machine is influenced.

To this end, chinese patent No. CN213711259U provides a pump and a washing machine, the pump comprising: the pump body is provided with a pump cavity, a liquid inlet and a liquid outlet; the piston assembly is arranged in the pump cavity in a sliding manner; the driving motor comprises a motor end cover, a cover sealing part is convexly arranged on one side of the motor end cover, which is far away from the motor shell, along the direction towards the pump body, a limiting groove is formed in the cover sealing part, one end of the pump body is inserted into the limiting groove and connected with the cover sealing part, and one side of the pump body, which is far away from the motor shell, is partially attached and connected with the motor end cover; one end of the connecting piece is connected with the driving shaft, the other end of the connecting piece is eccentrically provided with an output shaft part, and the output shaft part is connected with the piston assembly; the liquid inlet one-way valve is arranged at the liquid inlet; the liquid outlet one-way valve is arranged at the liquid outlet.

In the technical scheme, the motor output shaft is connected with the piston assembly through the connecting piece, the sealing performance between the connecting piece and the motor output shaft is poor, and leaked liquid easily enters the motor cavity along the connecting piece and the motor end cover to damage the motor and influence the service life of the motor; meanwhile, the pump cavity is kept closed through the motor end cover, leaked liquid is gathered in the pump cavity, easily enters the inside of the motor along the motor shaft hole, the situation in the pump cavity cannot be timely obtained when the pump cavity is leaked, and faults of components in the pump cavity cannot be timely processed.

In view of this, there is an urgent need to improve the structure of the piston pump of the intelligent washing machine in the prior art, so as to improve the tightness of the motor cavity, avoid the leaked detergent from entering the motor cavity to affect the service life of the motor cavity, and improve the convenience of obtaining the condition of the pump cavity.

Disclosure of Invention

The utility model aims to solve the technical problems that the motor cavity of the piston pump of the existing intelligent washing machine is poor in tightness, the service life of the piston pump is influenced, and the operation condition in the pump cavity is inconvenient to acquire.

In order to solve the technical problems, the technical scheme adopted by the utility model is as follows:

an intelligent washing machine piston pump, comprising:

the pump shell is provided with a piston cavity and a driving cavity which are communicated with each other; a motor seat is arranged in the driving cavity, and a baffle is arranged on the outer side of the motor seat; a diversion channel is formed between the baffle and the pump shell, a diversion port is arranged on the pump shell, and the diversion channel is used for communicating the piston cavity with the diversion port;

the pump head is arranged on the piston cavity, a liquid inlet nozzle and a liquid outlet nozzle which are communicated through the piston cavity are arranged on the pump head, and a liquid inlet one-way valve and a liquid outlet one-way valve are respectively arranged in the liquid inlet nozzle and the liquid outlet nozzle;

the motor is arranged on the bottom surface of the pump shell, and a motor shaft of the motor penetrates through the motor seat;

the cam is connected with the motor shaft and is rotatably arranged on the motor seat; a cam sealing ring is arranged between the cam and the motor seat;

and the piston assembly is arranged in the piston cavity, connected with the cam and arranged along the piston cavity in a moving way along with the rotation of the cam.

In the above technical solution, preferably, the piston assembly includes:

the piston comprises a piston body and a connecting part arranged on the end face of the rear end of the piston body, wherein a connecting shaft hole is formed in the connecting part; a piston sealing ring is arranged on the piston body;

the front end of the connecting piece is provided with a connecting shaft matched with the connecting shaft hole, and the connecting shaft is connected with the piston through the connecting shaft hole; the rear end of the connecting piece is provided with a convex shaft groove which is perpendicular to the moving direction of the piston;

the cam is provided with a convex shaft matched with the convex shaft groove, the convex shaft is arranged on one side of the circle center of the cam, and the top surface of the cam is eccentrically arranged.

In the above technical solution, preferably, the piston sealing ring is two Y-shaped sealing rings, and lips of the Y-shaped sealing rings are disposed opposite to each other.

In the above technical solution, preferably, the pump head includes:

the pump head cover is arranged on the front end opening of the piston cavity and forms a single valve cavity with the pump shell; the liquid inlet nozzle and the liquid outlet nozzle are arranged on the pump head cover;

the pump single valve plate is arranged in the single valve cavity; the pump single valve plate is provided with a liquid inlet hole and a liquid outlet hole, and the liquid inlet check valve and the liquid outlet check valve are respectively arranged in the liquid inlet hole and the liquid outlet hole; the pump single valve plate is provided with an 8-shaped sealing ring, and the 8-shaped sealing ring is arranged between the liquid inlet nozzle and the liquid outlet nozzle and between the liquid inlet hole and the liquid outlet hole.

In the above technical solution, preferably, the pump casing includes:

a pump housing plate, the piston chamber being disposed on a rear portion of a top surface of the pump housing plate; the top surface of the pump shell plate is provided with a coaming, the coaming is arranged at the rear side of the piston cavity, the coaming encloses a coaming groove with one side open, and the baffle plate is arranged in the coaming groove and is opposite to the baffle plate to form the diversion channel;

and the pump shell cover is detachably arranged on the top surface of the baffle plate, and encloses the driving cavity with the baffle plate and the pump shell plate.

In the above technical solution, preferably, the pump housing cover includes:

a top cover part arranged on the top surface of the baffle; the piston cavity is provided with an opening, and the front end of the top cover part is inserted into the opening of the piston cavity and is connected with the piston cavity through a pump shell cover buckle;

the supporting part is arranged along the bottom surface of one end, far away from the piston cavity, of the top cover part in a protruding mode, and is arranged in a protection groove surrounded by the baffle plate;

the fixed ear is arranged on the side face of the top cover part, a screw fixing position is arranged on the pump shell plate, a screw hole is arranged on the fixed ear, and a screw penetrates through the screw hole and is fixed with the screw fixing position.

In the above technical solution, preferably, a pump casing cover limiting groove is provided in the protecting groove; the supporting part is provided with a limiting plate matched with the limit groove of the pump shell cover, and the limiting plate is inserted into the limit groove of the pump shell cover;

and a limiting convex part is arranged in the protective groove and is propped against the outer side surface of the supporting part.

In the above technical solution, preferably, the baffle includes two parallel first baffles and a second baffle for connecting the two first baffles, the height of the second baffle is smaller than that of the first baffle, the first baffles are oppositely arranged to form a connecting piece limiting groove, and the width of the connecting piece limiting groove is adapted to the width of the connecting piece;

the inner wall of the piston cavity is provided with a limit rib arranged along the length of the piston cavity, and the connecting piece is arranged on the top surface of the limit rib.

In the above technical solution, preferably, the motor base is an annular supporting plate disposed on a top surface of the pump casing plate, and a motor shaft penetrating hole adapted to the motor shaft is provided in a middle portion of the annular supporting plate;

the cam sealing ring is sleeved on the outer circumferential surface of the annular supporting plate;

the bottom surface of the cam is provided with a connecting groove which comprises a motor shaft groove matched with the motor shaft and a cam sealing ring groove matched with the cam sealing ring; the cam is installed on the motor shaft through the motor shaft groove, and the cam sealing ring is arranged in the cam sealing ring groove.

In the above technical solution, preferably, the cam seal ring is a lip seal ring, and a lip of the lip seal ring is disposed towards the pump housing plate.

Compared with the prior art, the piston pump of the intelligent washing machine separates the piston cavity from the motor base through the baffle arranged in the driving cavity, and the sealing ring is arranged between the cam and the motor shaft of the motor, so that liquid leaked from the piston cavity due to prolonged use time and aging of the piston assembly is prevented from entering the motor along the motor base, and the motor is prevented from being damaged; the baffle of drive chamber forms the water conservancy diversion passageway with drive chamber inner wall to cooperate in the drainage mouth on the pump case, can in time discharge the liquid that the piston chamber revealed, avoid the liquid flood irrigation that the piston chamber revealed to get into inside the motor, cause the motor to damage. The triple sealing protection structure is formed by the baffle, the sealing ring and the diversion channel, so that the sealing reliability of the intelligent washing machine piston pump is greatly improved, and the service life of the intelligent washing machine piston pump is prolonged.

Drawings

FIG. 1 is a perspective view of a piston pump of a smart washer according to the present utility model;

FIG. 2 is a schematic diagram showing the separation of the piston pump of the intelligent washing machine;

FIG. 3 is a schematic cross-sectional view of a piston pump of the intelligent washing machine of the present utility model;

FIG. 4 is a schematic view of the structure of a pump housing plate according to the present utility model;

FIG. 5 is a schematic view of the structure of a pump housing cover according to the present utility model;

FIG. 6 is a schematic view of a piston assembly according to the present utility model;

fig. 7 is a schematic view of the cam structure in the present utility model.

The correspondence between the names and the reference numerals of the respective components in fig. 1 to 7 is as follows:

pump head 1, motor 2, cam 3, piston assembly 4, pump housing plate 5, pump housing cover 6, cam sealing ring 7,

pump head cover 11, pump single valve plate 12, liquid inlet nozzle 13, liquid outlet nozzle 14, liquid inlet one-way valve 15, liquid outlet one-way valve 16, 8-shaped sealing ring 17,

the liquid inlet hole 121, the liquid outlet hole 122,

a motor shaft 21,

the motor shaft groove 31, the cam seal groove 32, the protruding shaft 33,

a connecting piece 41, a piston body 42, a connecting part 43, a piston seal 44,

the connection shaft 411, the male shaft groove 412,

a connection shaft hole 431 is provided to be connected to the inner wall of the housing,

the piston cavity 51, the coaming plate 52, the baffle plate 53, the drainage port 54, the diversion channel 55, the screw fixing position 56, the motor base 57, the limit rib 58,

the pump case covers the limit groove 531, the limit protrusion 532, the first barrier 533, the second barrier 534,

the motor shaft passes through the hole 571,

top cover 61, support 62, fixing lug 63, pump case cover fastener 64, and limit plate 65.

Detailed Description

The utility model provides an intelligent washing machine piston pump, which improves the tightness between a driving cavity and a motor through a baffle and a cam sealing ring, discharges leaked liquid through a diversion channel and a diversion port, avoids damaging the motor and prolongs the service life of the piston pump. The utility model is described in detail below with reference to the drawings and the detailed description.

As shown in fig. 1 to 7, the intelligent washing machine piston pump provided by the utility model comprises a pump shell, a pump head 1, a motor 2, a cam 3 and a piston assembly 4.

The pump housing comprises a pump housing plate 5 and a pump housing cover 6. The top surface of the pump shell plate 5 is provided with a piston cavity 51 and a coaming 52, the coaming 52 is arranged at the rear side of the piston cavity 51, the coaming 52 encloses a coaming groove with one side open, a baffle plate 53 is arranged in the coaming groove, and the coaming 52 and the baffle plate 53 are arranged oppositely to form a diversion channel 55 with a diversion port 54. The pump housing cover 6 is detachably mounted on the top surface of the baffle plate 53, and the pump housing cover 6, the baffle plate 53 and the pump housing plate 5 enclose a drive chamber.

The pump housing cover 6 includes a top cover portion 61, a support portion 62, and a fixing lug 63. The top cover portion 61 is provided on the top surface of the shutter 53; the piston chamber 51 is provided with an opening, and the front end of the top cover 61 is inserted into the opening and connected to the piston chamber 51 by a pump casing cover buckle 64.

The support portion 62 is provided so as to protrude downward along the bottom surface of the end of the top cover portion 61 remote from the piston chamber 51, and the support portion 62 is provided in a guard groove surrounded by the baffle plate 53. The protecting groove is internally provided with a pump cover limit groove 531, the supporting part 62 is provided with a limit plate 65 which is matched with the pump cover limit groove 531, and the limit plate 65 is inserted into the pump cover limit groove 531. The protective groove is internally provided with a limit convex part 532, and the limit convex part 532 is abutted against the outer side surface of the supporting part 62.

The fixing lugs 63 are provided on the side surface of the top cover 61, the pump housing plate 5 is provided with screw fixing portions 56, the fixing lugs 63 are provided with screw holes, and the screws penetrate the screw holes and are fixed to the screw fixing portions 56.

The pump head 1 is arranged on the piston chamber 51, the pump head 1 comprising a pump head cover 11 and a pump single valve plate 12. The pump head cover 11 is mounted on the front end opening of the piston chamber 51, and encloses a single valve chamber with the pump housing. The pump head cover 11 is provided with a liquid inlet nozzle 13 and a liquid outlet nozzle 14.

The pump single valve plate 12 is arranged in the single valve cavity, the pump single valve plate 12 is provided with a liquid inlet hole 121 and a liquid outlet hole 122, and the liquid inlet hole 121 and the liquid outlet hole 122 are respectively provided with a liquid inlet one-way valve 15 and a liquid outlet one-way valve 16. The front end face of the pump single valve plate 12 is provided with an 8-shaped sealing ring 17,8-shaped sealing ring 17 which is arranged between the liquid inlet nozzle 13 and the liquid outlet nozzle 14 and between the liquid inlet hole 121 and the liquid outlet hole 122, and is used for keeping the liquid inlet nozzle 13 and the liquid outlet nozzle 14 independent and not communicated.

The motor seat 57 is arranged in the driving cavity, the motor seat 57 is an annular supporting plate arranged on the top surface of the pump shell plate 5, and a motor shaft penetrating hole 571 is formed in the middle of the annular supporting plate. The motor 2 is arranged on the bottom surface of the pump shell, the motor shaft 21 of the motor 2 is matched with the motor shaft penetrating hole 571, and the motor shaft of the motor 2 penetrates through the motor seat 57 through the motor penetrating hole.

The cam 3 is connected to the motor shaft 21 and is rotatably provided on the motor base 57. The bottom surface of the cam 3 is provided with a connecting groove, the connecting groove comprises a motor shaft groove 31 and a cam sealing ring groove 32, the motor shaft groove 31 is matched with the motor shaft 21, and the cam 3 is arranged on the motor shaft 21 through the motor shaft groove 31. A cam sealing ring 7 is arranged between the cam 2 and the motor seat 57, the cam sealing ring 7 is sleeved on the outer circumferential surface of the annular supporting plate, the cam sealing ring groove 32 is matched with the cam sealing ring 7, and the cam sealing ring 7 is arranged in the cam sealing ring groove 32. The cam seal 7 is a lip seal, the lip of which is arranged towards the pump housing plate 5. The cam 3 is provided with a protruding shaft 33, the protruding shaft 33 is arranged on one side of the center of the cam 3, and the protruding shaft is eccentrically arranged on the top surface of the cam 3.

The piston assembly 4 is disposed in the piston chamber 51, connected to the cam 3, and disposed to move along the piston chamber 51 as the cam 3 rotates. The piston assembly comprises a piston and a connecting piece 41. The piston comprises a piston body 42 and a connecting part 43 arranged on the end surface of the rear end of the piston body 42, and a connecting shaft hole 431 is arranged on the connecting part 43. The piston body 42 is provided with a piston sealing ring 44, the piston sealing ring 44 is two Y-shaped sealing rings, and lips of the Y-shaped sealing rings are arranged back to back.

The front end of the connecting piece 41 is provided with a connecting shaft 411 which is matched with the connecting shaft hole 431, and the connecting shaft 411 is connected with the piston through the connecting shaft hole 431. The rear end of the connecting member 41 is provided with a boss groove 412, the boss groove 412 is provided perpendicular to the moving direction of the piston 4, and the boss 33 is provided in the boss groove 412 to move along the boss groove 412.

The baffle includes two parallel first baffles 533 and is used for connecting the second baffle 534 of two first baffles 533, and the height of second baffle 534 is less than first baffle 533, and first baffle 533 sets up relatively and forms connecting piece spacing groove, and connecting piece spacing groove's width and connecting piece 41's width looks adaptation for avoid connecting piece 41 to take place to rock when removing, influence the leakproofness of piston. The inner wall of the piston cavity 51 is provided with a limit rib 58 along the length thereof, and the connecting piece 41 is arranged on the top surface of the limit rib 58, so that the moving stability of the connecting piece 41 is further improved.

The working process of the utility model is as follows:

the motor 2 drives the cam 3 to rotate, the connecting piece 41 is driven to move through the protruding shaft 33 on the cam 3, and the connecting piece 41 moves back and forth along the piston cavity 51 under the limiting action of the first baffle 533, so that the piston is driven to move back and forth along the piston cavity 51. When the piston moves backwards, the liquid inlet check valve 15 is opened under the action of negative pressure, the liquid outlet check valve 16 is closed, liquid enters the piston cavity 51 through the liquid inlet nozzle 13 and the liquid inlet hole 121, and when the piston moves forwards, the liquid outlet check valve 16 is opened, the liquid inlet check valve 15 is closed, and the liquid is discharged from the liquid outlet nozzle 14 through the liquid outlet hole 122.

When the aging tightness of the piston seal ring 44 on the piston assembly 4 decreases with the increase of the service time, the liquid in the piston cavity 51 enters the diversion channel 55 through the gap between the piston assembly 4 and the piston cavity 51, is discharged from the diversion port 54 under the guidance of the diversion channel 55, and the leaked liquid cannot reach the driving cavity under the blocking effect of the baffle 53. Meanwhile, as the cam sealing ring 7 is arranged between the cam 3 and the motor seat 57, the motor is further protected.

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

(1) The piston cavity is separated from the motor seat by the baffle arranged in the driving cavity, and the sealing ring is arranged between the cam and the motor shaft of the motor, so that the damage to the motor caused by the fact that liquid leaked from the piston cavity due to the fact that the service time is prolonged and the piston assembly is aged enters the motor along the motor seat is avoided; the baffle of drive chamber forms the water conservancy diversion passageway with drive chamber inner wall to cooperate in the drainage mouth on the pump case, can in time discharge the liquid that the piston chamber revealed, avoid the liquid flood irrigation that the piston chamber revealed to get into inside the motor, cause the motor to damage. The triple sealing protection structure is formed by the baffle plate, the sealing ring and the diversion channel, so that the sealing reliability of the intelligent washing machine piston pump is greatly improved, and the service life of the intelligent washing machine piston pump is prolonged;

(2) The pump shell comprises a pump shell plate and a pump shell cover, wherein the pump shell cover is detachably arranged on the pump shell plate and is connected with the piston cavity through a pump shell cover buckle, so that the disassembly convenience degree of the pump shell cover is improved, the working condition of the internal components of the piston pump can be conveniently and timely mastered, and the components in the driving cavity can be conveniently overhauled;

(3) The motor cabinet is the annular supporting plate arranged on the pump shell plate, the motor shaft penetrating hole is formed in the middle of the annular supporting plate, the position of the motor shaft penetrating hole is raised through the annular supporting plate, leakage liquid is prevented from entering the motor through the motor shaft penetrating hole, the tightness of the motor of the intelligent washing machine piston pump is further improved, and the service life of the intelligent washing machine piston pump is prolonged.

The present utility model is not limited to the above-mentioned preferred embodiments, and any person who can learn the structural changes made under the teaching of the present utility model can fall within the scope of the present utility model if the present utility model has the same or similar technical solutions.

Claims

1. An intelligent washing machine piston pump, comprising:

2. The intelligent washing machine piston pump of claim 1, wherein the piston assembly comprises:

3. The intelligent washing machine piston pump of claim 2, wherein the piston seal is two Y-shaped seals, and lips of the Y-shaped seals are disposed opposite to each other.

4. The intelligent washing machine piston pump of claim 1, wherein the pump head comprises:

5. The intelligent washing machine piston pump according to claim 2, wherein the pump housing comprises:

6. The intelligent washing machine piston pump of claim 5, wherein the pump housing cover comprises:

7. The intelligent washing machine piston pump as claimed in claim 6, wherein a pump casing cover limit groove is arranged in the protection groove; the supporting part is provided with a limiting plate matched with the limit groove of the pump shell cover, and the limiting plate is inserted into the limit groove of the pump shell cover;

8. The intelligent washing machine piston pump according to claim 2, wherein the baffle comprises two parallel first baffles and a second baffle for connecting the two first baffles, the height of the second baffle is smaller than that of the first baffle, the first baffles are oppositely arranged to form a connecting piece limiting groove, and the width of the connecting piece limiting groove is matched with the width of the connecting piece;

9. The intelligent washing machine piston pump as claimed in claim 5, wherein the motor base is an annular support plate arranged on the top surface of the pump shell plate, and a motor shaft penetrating hole matched with the motor shaft is formed in the middle of the annular support plate;

10. The intelligent washer piston pump of claim 9, wherein the cam seal is a lip seal with a lip disposed toward the pump housing plate.