Intelligent washing machine piston pump

Abstract

The present invention discloses an intelligent washing machine piston pump, comprising: a pump housing, on which a piston chamber and a driving chamber are connected; a motor base is provided in the driving chamber, and a baffle is provided on the outside of the motor base; the baffle and the pump housing form a diversion channel connected to the piston chamber and a drainage port on the pump housing; a pump head, disposed on the piston chamber, provided with inlet and outlet nozzles, each of which is provided with an inlet and outlet check valve; a motor, disposed on the bottom surface of the pump housing, with its motor shaft extending through the motor base; a cam, connected to the motor shaft and rotatably disposed on the motor base; a cam sealing ring disposed between the cam and the motor base; and a piston assembly, disposed in the piston chamber, connected to the cam, and movable along the piston chamber as the cam rotates. The present invention improves the sealing between the driving chamber and the motor through the baffle and cam sealing ring, and discharges leaked liquid through the diversion channel and the drainage port, thereby preventing damage to the motor and extending the service life of the piston pump.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent washing machines, and in particular to a piston pump for an intelligent washing machine. Background Art

[0002] With the advancement of technology and the improvement of people's living standards, smart washing machines that automatically dispense detergent are becoming increasingly popular. After loading clothes, smart washing machines automatically match the optimal amount of detergent based on the material and weight of the clothes. This avoids problems such as insufficient detergent leading to incomplete washing, excessive detergent leading to incomplete washing, and detergent residue, greatly improving the convenience of laundry.

[0003] The most critical component of a smart washing machine's dispenser is the piston pump, which primarily pumps and discharges liquid. Currently, existing piston pumps on the market can experience internal rubber wear and leakage over extended periods of operation. Leaked detergent can then flow into the motor, shortening the pump's lifespan and ultimately the washing machine's usability.

[0004] To this end, Chinese utility model patent CN213711259U provides a pump and a washing machine, the pump comprising: a pump body having a pump chamber, a liquid inlet and a liquid outlet; a piston assembly slidably arranged in the pump chamber; a drive motor comprising a motor end cover, a side of the motor end cover away from the motor housing being provided with a sealing portion protruding in a direction toward the pump body, the sealing portion being provided with a limiting groove, one end of the pump body being inserted into the limiting groove and connected to the sealing portion, and a side of the pump body facing the motor housing being partially abutted and connected to the motor end cover; a connecting piece, one end of which is connected to the drive shaft, and the other end being eccentrically provided with an output shaft portion, the output shaft portion being connected to the piston assembly; a liquid inlet one-way valve being arranged at the liquid inlet; and a liquid outlet one-way valve being arranged at the liquid outlet.

[0005] In the above technical solution, the motor output shaft is connected to the piston assembly through a connecting piece. The sealing between the connecting piece and the motor output shaft is poor, and the leaked liquid can easily enter the motor cavity along the connecting piece and the motor end cover, damaging the motor and affecting its service life; at the same time, the pump cavity is kept closed by the motor end cover, and the leaked liquid gathers in the pump cavity and can easily enter the interior of the motor along the motor shaft hole. It is also impossible to obtain the situation in the pump cavity in time when the pump cavity leaks, and it is impossible to deal with the failure of the components in the pump cavity in time.

[0006] In view of this, there is an urgent need to improve the structure of the piston pump of the smart washing machine in the existing technology to improve the sealing of the motor cavity, prevent leaked detergent from entering the motor cavity and affecting its service life, and improve the convenience of obtaining the pump cavity status. Summary of the Invention

[0007] The technical problem to be solved by the present invention is that the motor cavity of the existing intelligent washing machine piston pump has poor sealing performance, which affects the service life of the piston pump and makes it inconvenient to obtain the operating conditions in the pump cavity.

[0008] In order to solve the above technical problems, the technical solutions adopted by the present invention are as follows:

[0009] An intelligent washing machine piston pump, comprising:

[0010] A pump housing is provided with a piston chamber and a drive chamber in communication therewith; a motor seat is provided in the drive chamber, and a baffle is provided on the outside of the motor seat; a guide channel is formed between the baffle and the pump housing, and a drainage port is provided on the pump housing, and the guide channel is used to connect the piston chamber and the drainage port;

[0011] A pump head is provided on the piston chamber and is provided with a liquid inlet nozzle and a liquid outlet nozzle connected through the piston chamber, wherein the liquid inlet nozzle and the liquid outlet nozzle are respectively provided with a liquid inlet check valve and a liquid outlet check valve;

[0012] A motor is arranged on the bottom surface of the pump housing, and a motor shaft thereof passes through the motor seat;

[0013] A cam is connected to the motor shaft and is rotatably arranged on the motor base; a cam sealing ring is provided between the cam and the motor base;

[0014] The piston assembly is arranged in the piston cavity, connected to the cam, and moves along the piston cavity as the cam rotates.

[0015] In the above technical solution, preferably, the piston assembly includes:

[0016] The piston comprises a piston body and a connecting portion provided on the end surface of the rear end of the piston body, wherein the connecting portion is provided with a connecting shaft hole; and a piston sealing ring is provided on the piston body;

[0017] A connecting member, wherein a connecting shaft adapted to the connecting shaft hole is provided on its front end, and the connecting shaft is connected to the piston through the connecting shaft hole; a convex shaft groove is provided at the rear end of the connecting member, and the convex shaft groove is arranged perpendicular to the moving direction of the piston;

[0018] The cam is provided with a convex shaft matched with the convex shaft groove. The convex shaft is arranged on one side of the center of the cam and is eccentrically arranged on the top surface of the cam.

[0019] In the above technical solution, preferably, the piston sealing ring is two Y-shaped sealing rings, and the lips of the Y-shaped sealing rings are arranged in back-to-back directions.

[0020] In the above technical solution, preferably, the pump head includes:

[0021] A pump head cover is mounted on the front end opening of the piston chamber and forms a single valve chamber with the pump housing; the liquid inlet nozzle and the liquid outlet nozzle are arranged on the pump head cover;

[0022] A pump single valve plate is arranged in the single valve cavity; a liquid inlet hole and a liquid outlet hole are provided on the pump single valve plate, and the liquid inlet one-way valve and the liquid outlet one-way valve are respectively arranged in the liquid inlet hole and the liquid outlet hole; an 8-shaped sealing ring is provided on the pump single valve plate, and the 8-shaped sealing ring is arranged between the liquid inlet nozzle, the liquid outlet nozzle and the liquid inlet hole and the liquid outlet hole.

[0023] In the above technical solution, preferably, the pump housing includes:

[0024] A pump housing plate, wherein the piston chamber is provided on the rear portion of the top surface of the pump housing plate; a surrounding plate is provided on the top surface of the pump housing plate, the surrounding plate is provided on the rear side of the piston chamber, the surrounding plate forms a surrounding plate groove with one side open, the baffle is provided in the surrounding plate groove, and is arranged opposite to the baffle to form the guide channel;

[0025] The pump casing cover is detachably mounted on the top surface of the baffle plate and forms the driving cavity together with the baffle plate and the pump casing plate.

[0026] In the above technical solution, preferably, the pump casing cover includes:

[0027] A top cover is provided on the top surface of the baffle; an opening is provided on the piston cavity, a front end of the top cover is inserted into the opening of the piston cavity, and is connected to the piston cavity through a pump housing cover buckle;

[0028] a support portion, protruding downwardly along the bottom surface of the end of the top cover away from the piston chamber, the support portion being disposed in a protective groove surrounded by the baffle;

[0029] A fixing ear is arranged on the side of the top cover portion, a screw fixing position is provided on the pump shell plate, a screw hole is provided on the fixing ear, and a screw passes through the screw hole and is fixed to the screw fixing position.

[0030] In the above technical solution, preferably, a pump casing cover limiting groove is provided in the protective groove; a limiting plate adapted to the pump casing cover limiting groove is provided on the support portion, and the limiting plate is inserted into the pump casing cover limiting groove;

[0031] A limiting protrusion is provided in the protection groove, and the limiting protrusion abuts against the outer surface of the support portion.

[0032] 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 the first baffle, the first baffles are relatively arranged to form a connector limiting groove, and the width of the connector limiting groove is adapted to the width of the connector;

[0033] The inner wall of the piston cavity is provided with a limiting ridge arranged along the length thereof, and the connecting member is arranged on the top surface of the limiting ridge.

[0034] In the above technical solution, preferably, the motor seat is an annular support plate provided on the top surface of the pump housing plate, and a motor shaft through-hole adapted to the motor shaft is provided in the middle of the annular support plate;

[0035] The cam sealing ring is sleeved on the outer circumferential surface of the annular support plate;

[0036] A connecting groove is provided on the bottom surface of the cam, including a motor shaft groove adapted to the motor shaft and a cam sealing ring groove adapted to 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.

[0037] In the above technical solution, preferably, the cam sealing ring is a lip sealing ring, and its lip is arranged toward the pump casing plate.

[0038] Compared to existing technologies, the intelligent washing machine piston pump provided by the present invention separates the piston chamber from the motor base via a baffle installed in the drive chamber. A sealing ring is provided between the cam and the motor shaft to prevent liquid leaking from the piston chamber due to extended use and aging of the piston assembly from entering the motor along the motor base and causing damage. The baffle in the drive chamber forms a diversion channel with the inner wall of the drive chamber, which cooperates with the drainage port on the pump housing to promptly drain liquid leaking from the piston chamber, preventing it from flooding into the motor and causing damage. The baffle, sealing ring, and diversion channel form a triple-sealed protective structure, significantly improving the sealing reliability of the intelligent washing machine piston pump and extending its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 A perspective view of the piston pump of the intelligent washing machine according to the present invention;

[0040] Figure 2 This is a schematic diagram of the structure of the intelligent washing machine piston pump of the present invention;

[0041] Figure 3 Schematic cross-section of the piston pump of the intelligent washing machine of the present invention;

[0042] Figure 4 It is a structural schematic diagram of the pump casing plate in the present invention;

[0043] Figure 5 It is a structural schematic diagram of the pump casing cover in the present invention;

[0044] Figure 6 Schematic diagram of the structure of the piston assembly of the present invention;

[0045] Figure 7 It is a structural schematic diagram of the cam in the present invention.

[0046] in, Figures 1 to 7 The corresponding relationship between the names of the components and the reference numerals is as follows:

[0047] Pump head 1, motor 2, cam 3, piston assembly 4, pump housing plate 5, pump housing cover 6, cam sealing ring 7,

[0048] Pump head cover 11, pump single valve plate 12, liquid inlet nozzle 13, liquid outlet nozzle 14, liquid inlet check valve 15, liquid outlet check valve 16, 8-shaped sealing ring 17,

[0049] Liquid inlet 121, liquid outlet 122,

[0050] Motor shaft 21,

[0051] Motor shaft groove 31, cam seal ring groove 32, cam shaft 33,

[0052] Connecting piece 41, piston body 42, connecting part 43, piston sealing ring 44,

[0053] Connecting shaft 411, convex shaft groove 412,

[0054] Connecting shaft hole 431,

[0055] Piston chamber 51, enclosure 52, baffle 53, drainage port 54, diversion channel 55, screw fixing position 56, motor seat 57, limiting ridge 58,

[0056] Pump casing cover limiting groove 531, limiting protrusion 532, first baffle 533, second baffle 534,

[0057] The motor shaft passes through hole 571,

[0058] Top cover portion 61 , support portion 62 , fixing ear 63 , pump housing cover buckle 64 , and limiting plate 65 . DETAILED DESCRIPTION

[0059] The present invention provides an intelligent washing machine piston pump. A baffle and cam seal improve the seal between the drive chamber and the motor. Leaked liquid is drained through a diversion channel and outlet, preventing damage to the motor and extending the service life of the piston pump. The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0060] like Figures 1 to 7 As shown, the intelligent washing machine piston pump provided by the present invention includes a pump housing, a pump head 1, a motor 2, a cam 3 and a piston assembly 4.

[0061] The pump casing includes a pump casing plate 5 and a pump casing cover 6. A piston chamber 51 and a surrounding plate 52 are provided on the top surface of the pump casing plate 5. The surrounding plate 52 is positioned behind the piston chamber 51 and forms a one-side open-ended surrounding plate slot. A baffle 53 is positioned within the slot. The surrounding plate 52 and baffle 53 are positioned opposite each other, forming a diversion channel 55 with a drainage port 54. The pump casing cover 6 is removably mounted on the top surface of the baffle 53. The pump casing cover 6, the baffle 53, and the pump casing plate 5 form a drive chamber.

[0062] 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 disposed on the top surface of the baffle 53. The piston chamber 51 is provided with an opening, and the front end of the top cover portion 61 is inserted into the opening and connected to the piston chamber 51 via a pump housing cover buckle 64.

[0063] The support portion 62 protrudes downwardly from the bottom surface of the end of the top cover portion 61 away from the piston chamber 51. The support portion 62 is disposed within the protective groove formed by the baffle 53. The protective groove defines a pump casing cover retaining groove 531. The support portion 62 is provided with a retaining plate 65 that mates with the pump casing cover retaining groove 531 and is inserted into the pump casing cover retaining groove 531. A retaining protrusion 532 is disposed within the protective groove and abuts against the outer surface of the support portion 62.

[0064] The fixing ears 63 are arranged on the side of the top cover portion 61 . The pump housing plate 5 is provided with screw fixing positions 56 . The fixing ears 63 are provided with screw holes. The screws pass through the screw holes and are fixed to the screw fixing positions 56 .

[0065] The pump head 1 is mounted on the piston chamber 51 and includes a pump head cover 11 and a single pump valve plate 12. The pump head cover 11 is mounted on the front opening of the piston chamber 51, forming 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.

[0066] A single pump valve plate 12 is disposed within the single valve chamber. It is provided with a liquid inlet hole 121 and a liquid outlet hole 122. Liquid inlet and outlet holes 121 and 122 are each equipped with a liquid inlet check valve 15 and a liquid outlet check valve 16, respectively. An 8-shaped sealing ring 17 is provided on the front end of the pump valve plate 12. This 8-shaped sealing ring 17 is positioned between the liquid inlet and outlet nozzles 13 and 14 and the liquid inlet and outlet holes 121 and 122, respectively, to ensure that the liquid inlet and outlet nozzles 13 and 14 remain independent and disconnected.

[0067] A motor base 57 is disposed within the drive cavity. This is an annular support plate mounted on the top surface of the pump housing plate 5. A motor shaft hole 571 is provided in the center of the annular support plate. The motor 2 is mounted on the bottom surface of the pump housing. The motor shaft 21 of the motor 2 fits within the hole 571 and passes through the hole to extend through the motor base 57.

[0068] The cam 3 is connected to the motor shaft 21 and is rotatably arranged on the motor base 57. A connecting groove is provided on the bottom surface of the cam 3, and the connecting groove includes a motor shaft groove 31 and a cam sealing ring groove 32. The motor shaft groove 31 is adapted to the motor shaft 21, and the cam 3 is installed on the motor shaft 21 through the motor shaft groove 31. A cam sealing ring 7 is provided between the cam 2 and the motor base 57. The cam sealing ring 7 is sleeved on the outer circumference of the annular support plate. The cam sealing ring groove 32 is adapted to the cam sealing ring 7, and the cam sealing ring 7 is arranged in the cam sealing ring groove 32. The cam sealing ring 7 is a lip-shaped sealing ring, and its lip is arranged toward the pump casing plate 5. A cam shaft 33 is provided on the cam 3. The cam shaft 33 is arranged on one side of the center of the cam 3 and is eccentrically arranged on the top surface of the cam 3.

[0069] The piston assembly 4 is disposed within the piston cavity 51 and is connected to the cam 3. It moves along the piston cavity 51 as the cam 3 rotates. The piston assembly comprises a piston and a connector 41. The piston comprises a piston body 42 and a connector 43 disposed on the rear end face of the piston body 42. The connector 43 has a connecting shaft hole 431. The piston body 42 is provided with a piston seal 44. The piston seal 44 comprises two Y-shaped seals, with the lips of the Y-shaped seals facing away from each other.

[0070] The front end of the connecting member 41 is provided with a connecting shaft 411 that is adapted to fit within the connecting shaft hole 431. The connecting shaft 411 is connected to the piston via the connecting shaft hole 431. The rear end of the connecting member 41 is provided with a cam groove 412 that is perpendicular to the direction of movement of the piston 4. The cam 33 is disposed within the cam groove 412 and moves along the cam groove 412.

[0071] The baffles include two parallel first baffles 533 and a second baffle 534 connecting the two first baffles 533. The second baffle 534 is shorter than the first baffle 533. The first baffles 533 are arranged opposite each other to form a connector retaining groove. The width of the retaining groove matches the width of the connector 41 to prevent the connector 41 from shaking during movement and affecting the sealing of the piston. The inner wall of the piston chamber 51 is provided with a retaining ridge 58 running along its length. The connector 41 is positioned on the top surface of the retaining ridge 58, further improving the stability of the connector 41 during movement.

[0072] The working process of the present invention is as follows:

[0073] The motor 2 drives the cam 3 to rotate, which in turn drives the connector 41 to move via the cam shaft 33 on the cam 3. The connector 41, limited by the first baffle 533, moves back and forth along the piston cavity 51, driving the piston to move back and forth along the piston cavity 51. When the piston moves backward, the inlet check valve 15 opens under the action of negative pressure, while the outlet check valve 16 closes. Liquid enters the piston cavity 51 through the inlet nozzle 13 and the inlet hole 121. When the piston moves forward, the outlet check valve 16 opens, the inlet check valve 15 closes, and the liquid is discharged from the outlet nozzle 14 through the outlet hole 122.

[0074] When piston seal 44 on piston assembly 4 ages and loses its sealing performance over time, the liquid in piston chamber 51 enters guide channel 55 through the gap between piston assembly 4 and piston chamber 51, and is guided by guide channel 55 to be discharged from drainage port 54. The leaked liquid is prevented from reaching the drive chamber by baffle 53. Furthermore, the cam seal 7 provided between cam 3 and motor base 57 provides further protection for the motor.

[0075] Compared with the prior art, the present invention has the following advantages:

[0076] (1) The piston chamber is separated from the motor base by a baffle plate set in the drive chamber, and a sealing ring is set between the cam and the motor shaft of the motor to prevent the liquid leaking from the piston chamber due to extended use and aging of the piston assembly from entering the motor along the motor base and causing damage to the motor; the baffle plate of the drive chamber and the inner wall of the drive chamber form a diversion channel, which cooperates with the drainage port on the pump housing to discharge the liquid leaking from the piston chamber in time, preventing the liquid leaking from the piston chamber from flooding into the motor and causing damage to the motor. The baffle plate, sealing ring and diversion channel form a triple sealing protection structure, which greatly improves the sealing reliability of the smart washing machine piston pump and extends the service life of the smart washing machine piston pump;

[0077] (2) The pump casing includes a pump casing plate and a pump casing cover. The pump casing cover is detachably mounted on the pump casing plate and connected to the piston chamber via a pump casing cover buckle, thereby improving the ease of disassembly of the pump casing cover, making it easier to timely understand the working conditions of the internal components of the piston pump and to inspect and repair the components in the drive chamber.

[0078] (3) The motor seat is an annular support plate arranged on the pump housing plate, and the motor shaft through-hole is arranged in the middle of the annular support plate. The position of the motor shaft through-hole is raised by the annular support plate to prevent leakage of liquid from entering the interior of the motor through the motor shaft through-hole, further improving the sealing performance of the motor of the smart washing machine piston pump and extending the service life of the smart washing machine piston pump.

[0079] The present invention is not limited to the above-mentioned optimal implementation mode. Anyone should be aware that any structural changes made under the inspiration of the present invention, and any technical solutions that are the same or similar to the present invention, fall within the scope of protection of the present invention.

Claims

1. An intelligent washing machine piston pump, characterized in that: include: A pump housing is provided with a piston chamber and a drive chamber in communication therewith; a motor seat is provided in the drive chamber, and a baffle is provided on the outside of the motor seat; a guide channel is formed between the baffle and the pump housing, and a drainage port is provided on the pump housing, and the guide channel is used to connect the piston chamber and the drainage port; A pump head is provided on the piston chamber and is provided with a liquid inlet nozzle and a liquid outlet nozzle connected through the piston chamber, wherein the liquid inlet nozzle and the liquid outlet nozzle are respectively provided with a liquid inlet check valve and a liquid outlet check valve; A motor is arranged on the bottom surface of the pump housing, and a motor shaft thereof passes through the motor seat; A cam is connected to the motor shaft and is rotatably arranged on the motor base; a cam sealing ring is provided between the cam and the motor base; A piston assembly is disposed in the piston cavity, connected to the cam, and moves along the piston cavity as the cam rotates; The piston assembly comprises: The piston comprises a piston body and a connecting portion provided on the end surface of the rear end of the piston body, wherein the connecting portion is provided with a connecting shaft hole; and a piston sealing ring is provided on the piston body; A connecting member, wherein a connecting shaft adapted to the connecting shaft hole is provided on its front end, and the connecting shaft is connected to the piston through the connecting shaft hole; a convex shaft groove is provided at the rear end of the connecting member, and the convex shaft groove is arranged perpendicular to the moving direction of the piston; The cam is provided with a convex shaft adapted to the convex shaft groove, the convex shaft is arranged on one side of the center of the cam and eccentrically arranged on the top surface of the cam; The pump housing comprises: A pump housing plate, wherein the piston chamber is provided on the rear portion of the top surface of the pump housing plate; a surrounding plate is provided on the top surface of the pump housing plate, the surrounding plate is provided on the rear side of the piston chamber, the surrounding plate forms a surrounding plate groove with one side open, the baffle is provided in the surrounding plate groove, and is arranged opposite to the baffle to form the guide channel; The pump casing cover is detachably mounted on the top surface of the baffle plate and forms the driving cavity together with the baffle plate and the pump casing plate.

2. The intelligent washing machine piston pump according to claim 1, characterized in that: The piston sealing rings are two Y-shaped sealing rings, and the lips of the Y-shaped sealing rings are arranged in back-to-back directions.

3. The intelligent washing machine piston pump according to claim 1, characterized in that: The pump head comprises: A pump head cover is mounted on the front end opening of the piston chamber and forms a single valve chamber with the pump housing; the liquid inlet nozzle and the liquid outlet nozzle are arranged on the pump head cover; A pump single valve plate is arranged in the single valve cavity; a liquid inlet hole and a liquid outlet hole are provided on the pump single valve plate, and the liquid inlet one-way valve and the liquid outlet one-way valve are respectively arranged in the liquid inlet hole and the liquid outlet hole; an 8-shaped sealing ring is provided on the pump single valve plate, and the 8-shaped sealing ring is arranged between the liquid inlet nozzle, the liquid outlet nozzle and the liquid inlet hole and the liquid outlet hole.

4. The intelligent washing machine piston pump according to claim 1, characterized in that: The pump casing cover comprises: A top cover is provided on the top surface of the baffle; an opening is provided on the piston cavity, a front end of the top cover is inserted into the opening of the piston cavity, and is connected to the piston cavity through a pump housing cover buckle; a support portion, protruding downwardly along the bottom surface of the end of the top cover away from the piston chamber, the support portion being disposed in a protective groove surrounded by the baffle; A fixing ear is arranged on the side of the top cover portion, a screw fixing position is provided on the pump shell plate, a screw hole is provided on the fixing ear, and a screw passes through the screw hole and is fixed to the screw fixing position.

5. The intelligent washing machine piston pump according to claim 4, characterized in that: A pump casing cover limiting groove is provided in the protection groove; a limiting plate adapted to the pump casing cover limiting groove is provided on the support portion, and the limiting plate is inserted into the pump casing cover limiting groove; A limiting protrusion is provided in the protection groove, and the limiting protrusion abuts against the outer surface of the support portion.

6. The intelligent washing machine piston pump according to claim 1, characterized in that: The baffle includes two parallel first baffles and a second baffle for connecting the two first baffles, wherein the height of the second baffle is smaller than that of the first baffle, and the first baffles are arranged opposite to each other to form a connector limiting groove, and the width of the connector limiting groove is adapted to the width of the connector; The inner wall of the piston cavity is provided with a limiting ridge arranged along the length thereof, and the connecting member is arranged on the top surface of the limiting ridge.

7. The intelligent washing machine piston pump according to claim 1, characterized in that: The motor seat is an annular support plate arranged on the top surface of the pump shell plate, and a motor shaft through-hole adapted to the motor shaft is provided in the middle of the annular support plate; The cam sealing ring is sleeved on the outer circumferential surface of the annular support plate; A connecting groove is provided on the bottom surface of the cam, including a motor shaft groove adapted to the motor shaft and a cam sealing ring groove adapted to 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.

8. The intelligent washing machine piston pump according to claim 7, characterized in that: The cam sealing ring is a lip-shaped sealing ring, and its lip is arranged toward the pump housing plate.

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