CN213711259U - Pump and washing machine - Google Patents

Abstract

The utility model belongs to the technical field of washing machine, a pump and washing machine are specifically disclosed. The pump includes: 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 mode; the driving motor comprises a motor end cover, one side, far away from the motor shell, of the motor end cover is convexly provided with a sealing cover part along the direction towards the pump body, the sealing cover part is provided with a limiting groove, one end of the pump body is inserted into the limiting groove and is connected with the sealing cover part, and one side, facing towards the motor shell, of the pump body is partially attached to 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; and the liquid outlet one-way valve is arranged at the liquid outlet. The washing machine adopts the pump to throw in the detergent. The utility model discloses a pump and washing machine can simplify pump and washing machine's structure, improves the processing and the packaging efficiency of pump.

Description

Pump and washing machine

Technical Field

The utility model relates to a washing machine technical field especially relates to a pump and washing machine.

Background

With the increasing living standard of people, the washing machine has become one of the essential household appliances for family life. According to the rotating mode, the washing machines are divided into a drum washing machine and a pulsator washing machine, and the drum washing machine and the full-automatic pulsator washing machine are generally provided with an automatic feeding system for feeding detergent into a washing tub, so that various detergents such as laundry detergent and softener added from the outside are flushed into the washing tub by inlet water, and the clothes are cleaned and washed.

Most of the existing washing machines require an automatic dosing system to use a pump as liquid driving power to dose detergent. The pump generally comprises a driving motor, a pump body and a piston assembly arranged in the pump body in a sliding manner, one end of the pump body is connected with the fixed end of the driving motor, and the other end of the pump body is provided with a pump top cover with a liquid inlet pipe part and a liquid outlet pipe part. In order to facilitate the disassembly and assembly of the piston assembly in the pump cavity, the pump cavity penetrates through one end, far away from the pump top cover, of the pump body, and in order to prevent the piston assembly from being separated from the pump cavity when the pump runs, the open end, close cover, of the pump body is connected with the open end of the pump cavity.

The sealing cover of the existing pump is usually an independently arranged part and is detachably connected with the pump body, so that although the sealing cover can play a role of sealing the opening of the pump cavity, the assembly process of the pump can be increased, and the processing and the assembly efficiency of the pump are not improved; and the increase of parts also easily causes the increase of the cost of the pump.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a pump simplifies the structure of pump, improves the packaging efficiency of pump.

Another object of the present invention is to provide a washing machine, which simplifies the structure of the washing machine and improves the convenience of the washing machine.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a pump, comprising:

the pump body is provided with a pump cavity, the pump body is provided with a liquid inlet and a liquid outlet which are communicated with the pump cavity, and the pump cavity penetrates through the first end of the pump body;

a piston assembly slidably disposed in the pump chamber;

the driving motor comprises a motor shell, a motor end cover connected with the motor shell in a buckling mode and a motor main body partially accommodated in the motor shell, a driving shaft of the motor main body penetrates through the motor end cover, a sealing cover part is convexly arranged on one side, away from the motor shell, of the motor end cover along the direction towards the pump body, a limiting groove is formed in the sealing cover part, the first end of the pump body is inserted into the limiting groove and connected with the sealing cover part, and one side, facing the motor shell, of the pump body is partially attached to 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 and only allows liquid to flow into the pump cavity from the outside;

and the liquid outlet one-way valve is arranged at the liquid outlet and only allows liquid to flow from the pump cavity to the outside of the pump body.

As a preferable technical solution of the pump, the pump body includes a pump column portion, an axial direction of the pump column portion is perpendicular to an axial direction of the drive shaft, the pump chamber is opened in the pump column portion in a penetrating manner, the pump column portion includes an opening cylindrical portion and a cylindrical portion connected along an axial direction thereof, an opening of the opening cylindrical portion faces the motor end cover;

the motor end cover comprises an end cover plate part and a connecting boss part which are connected, the motor shell and the connecting boss part are respectively located on two opposite sides of the end cover plate part, the sealing cover part is arranged on the connecting boss part in a protruding mode, one end, far away from the cylindrical part, of the opening cylindrical part is inserted into the limiting groove, the side plane of the opening cylindrical part is abutted to one surface, far away from the end cover plate part, of the connecting boss, and the end face, facing the opening cylindrical part, of the cylindrical part is abutted to one side face, connected with the connecting boss part, of the end cover plate part.

As a preferable technical scheme of the pump, two guide ribs are convexly arranged on one side surface of the connecting boss part, which is far away from the end cover plate part, the two guide ribs are arranged oppositely and at intervals, the extending direction of the guide ribs is the same as the axial direction of the pump column part, a guide sliding groove with an opening facing to the other guide rib is formed between the guide ribs and the connecting boss, and the guide sliding groove penetrates through one end, far away from the sealing cover part, of the guide rib;

the two opening side edges of the opening cylindrical part extend outwards to form extending side parts, and the extending side parts are inserted into the two guide sliding grooves respectively and can be in sliding connection with the groove walls corresponding to the guide sliding grooves.

As a preferable technical scheme of the pump, a positioning column is convexly arranged at one end of the guide rib, which is far away from the sealing portion, a connecting lug extends from one end of the extending side portion, which faces the cylindrical portion, to the direction far away from the other extending side portion, a positioning hole is formed in the connecting lug in a penetrating manner, and the positioning column is inserted into the positioning hole.

As a preferred aspect of the pump, the pump body includes:

the pump body comprises a connecting cover part and a pump column part which are connected, the pump column part is provided with the pump cavity in a penetrating way, one end of the pump column part is inserted into the limiting groove, and the other end of the pump column part is connected with the connecting cover part;

the valve mounting plate is connected to one side, away from the pump column part, of the connecting cover part, the valve mounting plate is provided with the liquid inlet and the liquid outlet, and the liquid inlet and the liquid outlet are respectively communicated with the pump cavity in a sealing mode;

pump top cap, its with the joint cover portion lock is connected, the valve mounting panel connect in the pump main part with between the pump top cap, inlet channel and liquid outlet channel have been seted up on the pump top cap, inlet channel's one end and the sealed intercommunication of the inlet that corresponds, inlet channel's the other end and outside intercommunication, liquid outlet channel's one end with correspond the sealed intercommunication of liquid outlet, liquid outlet channel's the other end and outside intercommunication.

As a preferred technical scheme of the pump, each liquid inlet channel is provided with a liquid inlet notch which is just opposite to and communicated with the liquid inlet, and each liquid outlet channel is provided with a liquid outlet notch which is just opposite to and communicated with the liquid outlet;

the pump top cap with be provided with first sealing member between the valve mounting panel, first sealing member is "8" font structure, first sealing member includes two first sealing ring portion and connects in two first junction between the first sealing ring portion, two of first sealing member first sealing ring portion encircles respectively and corresponds the feed liquor notch with the play liquid notch sets up, first junction is located the feed liquor notch with go out between the liquid notch.

As a preferable technical scheme of the pump, a first sealing groove is formed in one surface, facing the pump cavity, of the pump top cover, and the shape of the first sealing groove is matched with that of the first sealing element;

the pump top cap is towards the protruding first muscle that keeps off that encircles the feed liquor notch and encircleing of being equipped with of one end of valve mounting panel the second of going out the liquid notch keeps off the muscle, first fender muscle with the second keeps off the muscle and forms the inner tank wall of first seal groove.

As a preferred technical scheme of a pump, the valve mounting panel orientation pump top cap's a side protruding location boss of establishing, the shape of location boss with the shape looks adaptation of first sealing member, the location boss orientation pump top cap's one end is inserted in the first seal groove, first sealing member press establish with the tank bottom of first seal groove with between the boss of location.

As a preferred technical scheme of the pump, a convex column is convexly arranged on the periphery of the liquid outlet on one side surface of the valve mounting plate facing the pump main body; the valve mounting plate faces towards one side face of the pump top cover and is provided with convex columns in a protruding mode on the periphery of the liquid inlet.

A washing machine comprises an automatic dosing system, wherein the automatic dosing system adopts the pump to dose detergent.

The beneficial effects of the utility model reside in that:

the utility model provides a pump is used for closing pump chamber open-ended closing cap portion through integrative setting on the motor end cover, makes the pump need not set up the closing cap alone again, in closing pump chamber open-ended, can simplify the overall structure of pump, reduces the step of pump equipment, and is favorable to the pump body more and the connection location of motor end cover, improves the packaging efficiency of pump, reduces the cost of pump.

The embodiment of the utility model provides a washing machine carries out the input of detergent through adopting foretell pump, can simplify washing machine's overall structure, reduces washing machine's overall cost.

Drawings

Fig. 1 is a structural view of a pump according to an embodiment of the present invention;

fig. 2 is a schematic view of a pump according to an embodiment of the present invention in a disassembled configuration in one direction;

fig. 3 is a schematic view of a pump according to an embodiment of the present invention in another orientation in a disassembled configuration;

fig. 4 is a schematic view of a split structure of a pump body according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a pump main body according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a valve mounting plate provided in an embodiment of the present invention at a viewing angle;

fig. 7 is a schematic structural diagram of a valve mounting plate provided in an embodiment of the present invention at another viewing angle;

fig. 8 is a schematic structural diagram of a cover top plate according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of a piston assembly according to an embodiment of the present invention;

fig. 10 is a schematic view of a disassembled structure of a piston assembly according to an embodiment of the present invention.

The figures are labeled as follows:

1. a drive motor; 11. a motor main body; 111. a drive shaft; 12. a motor housing; 13. a motor end cover; 131. an end cover plate portion; 132. connecting the boss part; 1321. a first limiting surface; 1322. a second limiting surface; 1323. a slot; 133. a guide rib; 134. a capping portion; 1341. a limiting groove; 135. a positioning column; 136. limiting ribs; 137. a cylindrical portion;

2. a first seal member; 3. a second seal member;

4. a pump body; 41. a pump body; 411. a pump cylinder portion; 4111. a pump chamber; 4112. an open cylindrical portion; 4113. a cylindrical portion; 412. a connecting cover part; 4121. an annular groove; 4122. a second seal groove; 413. a first guide rib; 414. a first guide groove; 415. a second guide rib; 416. a second guide groove; 417. an extension side portion; 418. a connecting lug; 4181. positioning holes; 42. a pump top cover; 421. a liquid inlet pipe part; 422. a liquid outlet pipe part; 423. a cover main body; 4231. a cover plate portion; 4232. a flange portion; 4233. a liquid inlet tank; 4234. a liquid outlet groove; 4235. a bayonet; 4236. a first barrier rib; 4237. a second rib; 4238. a first seal groove; 43. a valve mounting plate; 431. a liquid outlet; 432. a liquid inlet; 433. positioning the convex ring; 434. a convex column; 435. a hook; 436. positioning the boss;

5. a piston assembly; 51. a piston; 511. a piston rod portion; 5111. a slider portion; 5112. a shaft slip hole; 512. a plunger portion; 5121. a third seal groove; 513. a guide projection; 52. a Y-shaped seal ring;

6. a liquid inlet check valve; 7. a liquid outlet one-way valve; 8. a connecting member; 81. a main body column portion; 811. a shaft connecting hole; 82. a limit retainer ring; 83. an output shaft portion.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

Fig. 1 is the structure diagram of the pump provided by the embodiment of the present invention, as shown in fig. 1, the present embodiment provides a pump, which can be applied to an automatic dispensing system of a washing machine, and provides a driving force for the dispensing of detergent, and can also be applied to other scenes requiring liquid delivery.

Specifically, fig. 2 is a schematic view of the split structure of the pump provided by the embodiment of the present invention in one direction, fig. 3 is a schematic view of the split structure of the pump provided by the embodiment of the present invention in another direction, as shown in fig. 2 and 3, the pump includes: the pump body 4 is provided with a pump cavity 4111, the pump body 4 is provided with a liquid inlet 432 and a liquid outlet 431 which are communicated with the pump cavity 4111, and the pump cavity 4111 penetrates through a first end of the pump body 4; a piston assembly 5 slidably disposed in the pump chamber 4111; the driving motor 1 comprises a motor shell 12, a motor end cover 13 connected with the motor shell 12 in a buckling manner, and a motor main body 11 partially accommodated in the motor shell 12, wherein a driving shaft 111 of the motor main body 11 penetrates out of the motor end cover 13 and is connected with the piston assembly 5, a cover sealing part 134 is convexly arranged on one side, away from the motor shell 12, of the motor end cover 13 along the direction towards the pump body 4, a limit groove 1341 is formed in the cover sealing part 134, the first end of the pump body 4 is inserted into the limit groove 1341 and is connected with the cover sealing part 134, and one side, facing the motor shell 12, of the pump body 4 is partially attached and connected with the motor end cover 13; the liquid inlet one-way valve 6 is arranged at the liquid inlet 432, and the liquid inlet one-way valve 6 only allows liquid to flow into the pump cavity 4111 from the outside; and the liquid outlet one-way valve 7 is arranged at the liquid outlet 431, and the liquid outlet one-way valve 7 only allows liquid to flow from the pump cavity 4111 to the outside of the pump body 4.

The pump that this embodiment provided, through integrative the setting be used for closing pump chamber 4111 open-ended closing cap portion 134 on motor end cover 13, make the pump need not set up the closing cap alone again, in closing pump chamber 4111 open-ended, can simplify the overall structure of pump, reduce the step of pump equipment, and be favorable to the pump body more and motor end cover 13 be connected the location, improve the packaging efficiency of pump, reduce the cost of pump.

For convenience of description, XYZ coordinates are established using the coordinate system shown in fig. 2, in which the Y direction is the axial direction of the drive shaft 111, the Z direction is the extending direction of the pump chamber 4111, and the X direction is determined by the right-hand rule.

The motor casing 12 is one end opening, one end confined tubular structure, and motor end cover 13 lock surrounds with motor casing 12 at the opening part of motor casing 12 and is formed with and holds the chamber, and 11 most structure holding of motor main part are in holding the chamber, and motor main part 11's drive shaft 111 passes motor end cover 13 in order to stretch out and hold the chamber outside.

The motor cover 13 includes an end cover plate portion 131 parallel to the XZ plane, and the end cover plate portion 131 is used to close the opening of the motor case 12. In order to facilitate the connection and positioning of the end cover plate part 131 and the motor casing 12, a cylindrical part 137 is convexly arranged on one side of the end cover plate part 131 facing the motor casing 12, the outer diameter of the cylindrical part 137 is equal to the inner diameter of the motor casing 12, the cylindrical part 137 is inserted into the motor casing 12, and the opening end face of the motor casing 12 abuts against the end cover plate part 131.

In this embodiment, the motor casing 12 is connected with the motor end cover 13 in a snap-fit manner, and in other embodiments, the motor casing 12 and the motor end cover 13 may also be connected in other detachable connection manners, such as a threaded connection. And the arrangement of the motor housing 12 and the motor main body 11 can refer to the arrangement of the existing motor, and will not be described in detail here.

The end cover plate part 131 is provided with a connecting boss part 132 at a side thereof away from the motor casing 12, a first limiting surface 1321 is formed on a side surface of the connecting boss part 131 parallel to the XY plane, and the first limiting surface 1321 is vertically connected to the end cover plate part 131. A face of the connecting boss portion 132 remote from the end cover plate portion 131 is parallel to the ZX plane and forms a second limit face 1322. The cover 134 is protruded from the side of the connecting boss 132 opposite to the first stopper surface 1321 in a direction away from the end cover 131, and the cover 134 has a stopper groove 1341 facing the first stopper surface 1321.

Fig. 5 is the utility model provides a pump body 41's structure schematic diagram, as shown in fig. 2 and 5, the pump body 4 includes cylindrical pump column portion 411, and pump column portion 411 link up along the Z direction and has seted up pump chamber 4111, and pump column portion 411 includes along axially connected opening cylinder portion 4112 and cylinder portion 4113, and the one end that cylinder portion 4113 was kept away from to opening cylinder portion 4112 forms pump chamber 4111 open end. The opening of the opening cylindrical portion 41134112 faces the motor end cover 13, and one end of the opening cylindrical portion 4112 away from the cylindrical portion 4113 is inserted into the limiting groove 1341 and abuts against the groove bottom of the limiting groove 1341. The side plane of the opening cylindrical portion 4112 abuts against the second stopper surface 1322, and the end surface of the cylindrical portion 4113 facing the opening cylindrical portion 4112 abuts against the first stopper surface 1321. This kind of mode of setting can seal pump chamber 4111 effectively reliably, prevents that outside dust from getting into pump chamber 4111, improves the use reliability of pump.

Further, in order to facilitate the matching connection between the pump column 411 and the motor end cover 13, two guide ribs 133 are convexly disposed on the second limiting surface 1322, the guide ribs 133 extend along the Z direction, and the two guide ribs 133 are disposed opposite to and spaced from each other along the X direction. The cover part 134 is located at one end of the guide ribs 133, and a guide sliding groove with an opening facing the other guide rib 133 is formed between each guide rib 133 and the second limiting surface 1322, and the guide sliding groove penetrates through one end of the guide rib 133 away from the cover part 134. The opening side edges of the opening cylindrical portion 4112 are extended outward to form extending side portions 417, and the two extending side portions 417 are inserted into the two guide sliding grooves and slidably connected to the groove walls of the guide sliding grooves. The setting of direction spout and connection lateral part can make the pump body 4 insert the direction spout from the open end of keeping away from the direction spout of closing cap portion 134 to terminal under the cooperation guide effect of direction spout and connection lateral part inserts in spacing groove 1341, when guaranteeing the assembly reliability, improve assembly efficiency, the setting of direction rib 133 also can be further spacing for the relative driving motor 1 of the pump body 4 advances in the position of X direction and Y direction simultaneously, avoid the relative driving motor 1 of the pump body 4 to follow X direction or Y direction skew.

More preferably, a positioning column 135 is convexly disposed at one end of the guiding rib 133 away from the cover portion 134, one end of the connecting side portion facing the cylindrical portion 4113 is connected to a connecting ear portion, the connecting ear portion is provided with a positioning hole 4181, and the positioning column 135 is inserted into the positioning hole 4181 to further connect and position the pump body 4 and the motor end cover 13. In this embodiment, the pump body 4 is in threaded connection with the motor end cover 13, and the connection reliability is high. Specifically, one side of the opening cylindrical portion 4112, which is away from the opening, is provided with a fixing ear portion protruding outwards, the fixing ear portion is provided with a first connecting hole, the bottom of the limiting groove 1341 is provided with a second connecting hole, and the fixing ear portion is connected with the cap portion 134 through the threaded connection member 8 penetrating through the first connecting hole and the second connecting hole. In other embodiments, the pump body 4 and the motor end cover 13 may be connected in other manners.

To further limit the position deviation of the pump body 4 relative to the motor cover 13, two limiting ribs 136 are protruded from the end cover plate portion 131 toward one side of the pump body 4, the limiting ribs 136 extend along the Z direction, the two limiting ribs 136 are opposite and spaced along the X direction, one ends of the two limiting ribs 136 face the connecting boss portion 132, the other ends of the two limiting ribs 136 extend along the direction away from the connecting boss portion 132, and the two limiting ribs 136 are respectively located on two opposite sides of the cylindrical portion 4113. The position of the cylindrical portion 4113 can be limited by the limiting rib 136, and the partial position offset of the pump body 4 away from the first end is further prevented. In order to increase the overall structural strength of the motor end cover 13, reinforcing ribs are also convexly arranged on the end cover plate part 131. In the present embodiment, one end of the reinforcing rib is connected to the connecting boss portion 132, the other end of the reinforcing rib extends in a direction away from the connecting boss portion 132, and the reinforcing rib is provided in plurality. In other embodiments, the number and the arrangement position of the reinforcing ribs can be determined by self according to requirements.

As shown in fig. 2 and 3, due to the arrangement of the connecting boss portion 132, the overall thickness of the motor end cover 13 at the position of the connecting boss portion 132 is increased, in order to facilitate the connection of the driving shaft 111 with the piston 51 assembly 5, a mounting opening is formed on the motor end cover 13, the driving shaft 111 penetrates through the mounting opening, and the driving shaft 111 is connected with the piston 51 assembly 5 through the connecting member 8.

Specifically, the connecting member 8 includes a columnar main body column portion 81, an axial direction of the main body column portion 81 is parallel to the Y direction, an outer diameter of the main body column portion 81 is equal to an inner diameter of the mounting opening, and an end surface of the main body column portion 81 facing the driving shaft 111 is provided with a shaft coupling hole 811. One end of the body column portion 81 is inserted into the mounting opening, and the drive shaft 111 is inserted into the shaft coupling hole 811. In order to limit the position of the connecting piece 8 relative to the motor end cover 13, a limiting retainer 82 is convexly arranged on the periphery of the main body column part 81, the outer diameter of the limiting retainer 82 is larger than the caliber of the mounting opening, and one surface, far away from the piston 51 assembly 5, of the limiting retainer 82 is abutted to the second limiting surface 1322.

In order to realize the connection between the connecting member 8 and the piston 51 assembly 5, an output shaft portion is eccentrically disposed at one end of the main body column portion 81 away from the driving shaft 111, a shaft sliding hole is formed in the piston 51 assembly 5 along the X direction, the width of the shaft sliding hole is equal to the diameter of the output shaft portion, the length of the shaft sliding hole is greater than the diameter of the output shaft portion, and the output shaft portion is inserted into the shaft sliding hole and can slide in the shaft sliding hole.

As shown in fig. 4, the pump body 4 includes a pump main body 41, a valve mounting plate 43, and a pump top cover 42. The pump body 41 includes a connection cover portion 412 and the above-described pump column portion 411, and the connection cover portion 412 is connected to one end of the cylindrical portion 4113 remote from the opening cylindrical portion 4112. The valve mounting plate 43 is connected to the side of the connecting cover part 412 away from the pump column part 411, a liquid inlet 432 and a liquid outlet 431 are formed in the valve mounting plate 43, and the liquid inlet 432 and the liquid outlet 431 are respectively in sealed communication with the pump cavity 4111; the pump top cover 42 is connected with the connecting cover part 412 in a buckling manner, the valve mounting plate 43 is connected between the pump main body 41 and the pump top cover 42, a liquid inlet channel and a liquid outlet channel are formed in the pump top cover 42, one end of the liquid inlet channel is communicated with the corresponding liquid inlet 432 in a sealing manner, the other end of the liquid inlet channel is communicated with the outside, one end of the liquid outlet channel is communicated with the corresponding liquid outlet 431 in a sealing manner, and the other end of the liquid outlet channel is communicated with the outside.

Fig. 6 is the structural schematic diagram of the valve mounting plate provided by the embodiment of the present invention at a viewing angle, fig. 7 is the structural schematic diagram of the valve mounting plate provided by the embodiment of the present invention at another viewing angle, as shown in fig. 4-7, in order to avoid the liquid mixing in the two pump chambers 4111, the second sealing member 9 is provided between the valve mounting plate 43 and the connecting cover portion 412, and the inlet 432 and the outlet 431 are both located inside the second sealing member 9. In this embodiment, the second seal ring 9 is an O-ring.

In order to facilitate the installation of the second sealing element 9, a second sealing groove 4122 is formed at one end of the connecting cover part 412 away from the pump cylinder part 411, the shape of the second sealing groove 4122 is matched with the shape of the first sealing element 2, and the second sealing element 9 is embedded in the first sealing groove 4238.

The side of the connecting cover portion 412 facing the valve mounting plate 43 is opened with an annular groove 4121, and the annular groove 4121 is provided around the pump chamber 4111. The annular groove 4121 is provided to reduce the diameter of the single pump chamber 4111, and to ensure the space required for the inlet check valve 6 and the outlet check valve 7.

In order to realize the connection and positioning between the valve mounting plate 43 and the connecting cover part 412, a positioning convex ring 433 is convexly arranged on one surface of the valve mounting plate 43 facing the connecting cover part 412, the positioning convex ring 433 is in a circular arc structure, and the corresponding outer diameter of the positioning convex ring 433 is equal to the inner diameter of the annular groove 4121. When the valve mounting plate 43 is connected to the connecting cover portion 412, the positioning bead 433 is inserted into the annular groove 4121 and abuts against the groove wall of the annular groove 4121.

In order to prevent the liquid inlet check valve 6 and the liquid outlet check valve 7 from being installed in a wrong way, a convex column 434 is convexly arranged on the end surface of one side of the liquid inlet 432 facing the pump top cover 42 and the end surface of one side of the liquid outlet 431 facing the connecting cover part 412. Due to the arrangement of the convex columns 434, misloading of the check valves can be prevented, so that the liquid conveying effect of the pump can be guaranteed, and the assembling efficiency and the assembling yield are improved.

Fig. 8 is a schematic structural view of the cover top plate provided by the embodiment of the present invention, as shown in fig. 8, the pump top cover 42 includes a cover main body 423, a liquid inlet pipe 421 and a liquid outlet pipe 422, which are integrally formed, the cover main body 423 is fastened with the connection cover 412, and the valve mounting plate 43 is clamped inside the cover main body 423. Specifically, the cover main body 423 includes a cover plate portion 4231 and a flange portion 4232 vertically provided around the periphery of the cover plate portion 4231, and the connection cover 412 and the valve mounting plate 43 are inserted inside the flange portion 4232. In the present embodiment, the surface of the valve mounting plate 43 remote from the pump column portion 411 abuts against the inner bottom surface of the cover plate portion 4231, the hook 435 is projected from the valve mounting plate 43, the bayonet 4235 is formed through the cover plate portion 4231, and the hook 435 is engaged with the bayonet 4235. The outer peripheral surface of the connecting cover part 412 is abutted against the inner peripheral surface of the flange part 4232, a clamping protrusion is arranged on the outer side of the connecting cover part 412, a clamping groove is formed in the flange part 4232, and the clamping protrusion is inserted into the clamping groove for clamping. In other embodiments, the connection cover portion 412 and/or the valve mounting plate 43 may be connected to the cover main body 423 by other detachable connection methods, which are not illustrated.

The cover plate portion 4231 is provided with a liquid inlet groove 4233 and a liquid outlet groove 4234 corresponding to the liquid inlet 432 and the liquid outlet 431, respectively, one end of the liquid inlet pipe portion 421 is communicated with the liquid inlet groove 4233, and the other end of the liquid inlet pipe portion 421 is communicated with the outside, that is, the inner cavity of the liquid inlet pipe portion 421 and the liquid inlet groove 4233 form a liquid inlet passage. One end of the liquid outlet pipe part 422 is communicated with the liquid outlet groove 4234, and the other end of the liquid outlet pipe part 422 is communicated with the outside, namely, the inner cavity of the liquid outlet pipe part 422 and the liquid inlet groove 4233 form a liquid outlet channel.

In order to prevent the liquid from communicating between the liquid inlet groove 4233 and the liquid outlet groove 4234, in the present embodiment, the first sealing member 2 is provided in the cover main body 423. First sealing member 2 is "8" font structure, and it includes two first sealing ring portion and connects the first joint portion between two first sealing ring portion, and two first sealing ring portion encircle the feed liquor notch of feed liquor groove 4233 and the play liquid notch setting of play liquid groove 4234 respectively, and first joint portion is located between feed liquor groove 4233 and the play liquid groove 4234.

In order to improve the mounting stability of the first seal 2, a first seal groove 4238 is recessed in the inner surface of the cover plate portion 4231, and the shape of the first seal groove 4238 is adapted to the shape of the first seal 2. The first seal 2 is inserted into the first seal groove 4238.

Further, a first rib 4236 is convexly arranged at the liquid inlet slot on the inner surface of the cover plate portion 4231, a second rib 4237 is convexly arranged at the liquid outlet slot, and the first rib 4236 and the second rib 4237 form an inner slot wall of a first sealing slot 4238. The provision of the first barrier rib 4236 and the second barrier rib 4237 can ensure that the first seal member 2 can be stably mounted in the first seal groove 4238.

As shown in fig. 6, in order to further improve the stability of the first seal member 2, a positioning boss 436 is provided to protrude from an end surface of the valve mounting plate 43 facing the pump top cover 42, an end of the positioning boss 436 facing away from the pump main body 41 is inserted into the first seal groove 4238, and the first seal member 2 is pressed between a groove bottom of the first seal groove 4238 and an end surface of the positioning boss 436.

Fig. 9 is the utility model provides a piston assembly's schematic structure, fig. 10 is the utility model provides a piston assembly's split structure schematic diagram, as shown in fig. 9 and 10, piston assembly 5 includes piston 51 and sealing washer, piston 51 includes piston rod portion 511 and plunger portion 512, axle hole 5112 that slides has been seted up along the X direction to the one end of piston rod portion 511, the other end and the plunger portion 512 of piston rod portion 511 are connected, two third seal grooves 5121 have been seted up along the axial direction of plunger portion 512 to the outer peripheral face of plunger portion 512, all be provided with a sealing washer in every third seal groove 5121. Preferably, the sealing rings are Y-shaped sealing rings 52, and two Y-shaped sealing rings 52 are installed back to reduce frictional resistance, reduce the power of the driving motor 1, and improve the sealing effect.

Further, as shown in fig. 5, in order to improve the movement reliability of the piston assembly 5 in the pump chamber 4111, two pairs of first guide ribs 413 are convexly disposed on the inner wall of the pump chamber 4111, the first guide ribs 413 extend in the axial direction of the pump chamber 4111, the pair of first guide ribs 413 includes two first guide ribs 413 disposed at intervals in the circumferential direction of the pump chamber 4111, and a first guide groove 414 is formed between the two first guide ribs 413. The piston rod portion 511 is a plate-shaped structure, two opposite sides of the piston rod portion 511 are respectively inserted between the two first guiding sliding grooves 35, and the width of the first guiding groove 414 is equal to the thickness of the piston rod portion 511.

Further, a pair of second guide ribs 415 is further protruded on an inner wall of the pump chamber 4111, the second guide ribs 415 extend along an axial direction of the pump column 4111, and a second guide groove 416 is formed between the two second guide ribs 415. A guide protrusion 513 is protruded from a surface of the piston rod portion 511 corresponding to the second guide groove 416, and a distal end of the guide protrusion 513 is inserted into the second guide groove 416 and slidably coupled to a groove wall of the second guide groove 416.

Through setting up the direction rib, can avoid piston assembly 5 to take place to deflect in the in-process of motion in pump chamber 4111, reduce the wearing and tearing of sealing washer, improve the sliding seal effect. In this embodiment, to avoid the interference between the guide rib and the seal ring, the guide rib is mainly disposed on the opening cylindrical portion 4112.

Further, in order to reduce the frictional resistance between the piston rod portion 511 and the inner wall of the pump chamber 4111, the width of the body of the piston rod portion 511 is smaller than the diameter of the pump chamber 4111, and the opposite sides of the piston rod portion 511 are protruded with slider portions 5111, and the slider portions 5111 are inserted into the guide sliding grooves 35 and slidably connected with the groove walls of the guide sliding grooves 35. This arrangement is advantageous in reducing the contact area between the piston rod portion 511 and the inner wall of the pump chamber 4111.

The embodiment also provides a washing machine, which comprises an automatic feeding system for feeding the detergent, wherein the automatic feeding system adopts the pump to feed two different detergents.

It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.

Claims (10)

1. A pump, comprising:

a pump body (4), the pump body (4) having a pump cavity (4111), the pump body (4) being provided with a liquid inlet (432) and a liquid outlet (431) in communication with the pump cavity (4111), the pump cavity (4111) passing through a first end of the pump body (4);

a piston assembly (5) slidably disposed in the pump chamber (4111);

the driving motor (1) comprises a motor shell (12), a motor end cover (13) connected with the motor shell (12) in a buckling mode and a motor main body (11) partially accommodated in the motor shell (12), a driving shaft (111) of the motor main body (11) penetrates through the motor end cover (13), a cover sealing part (134) is convexly arranged on one side, away from the motor shell (12), of the motor end cover (13) along the direction towards the pump body (4), a limiting groove (1341) is formed in the cover sealing part (134), the first end of the pump body (4) is inserted into the limiting groove (1341) and connected with the cover sealing part (134), and one side, towards the motor shell (12), of the pump body (4) is partially attached to and connected with the motor end cover (13);

one end of the connecting piece (8) is connected with the driving shaft (111), the other end of the connecting piece (8) is eccentrically provided with an output shaft part (83), and the output shaft part (83) is connected with the piston assembly (5);

a liquid inlet check valve (6) provided at the liquid inlet (432), the liquid inlet check valve (6) allowing only liquid to flow into the pump chamber (4111) from the outside;

a liquid outlet one-way valve (7) is arranged at the liquid outlet (431), and the liquid outlet one-way valve (7) only allows liquid to flow from the pump cavity (4111) to the outside of the pump body (4).

2. The pump according to claim 1, wherein the pump body (4) comprises a pump column portion (411), an axial direction of the pump column portion (411) is perpendicular to an axial direction of the drive shaft (111), the pump chamber (4111) is opened through the pump column portion (411), the pump column portion (411) comprises an opening cylindrical portion (4112) and a cylindrical portion (4113) which are connected along an axial direction of the pump column portion, and an opening of the opening cylindrical portion (4112) faces the motor end cover (13);

the motor end cover (13) comprises an end cover plate portion (131) and a connecting boss portion (132) which are connected, the motor shell (12) and the connecting boss portion (132) are respectively located on two opposite sides of the end cover plate portion (131), the connecting boss portion (132) is convexly provided with the cover sealing portion (134), one end, far away from the cylindrical portion (4113), of the opening cylindrical portion (4112) is inserted into the limiting groove (1341), one side plane of the opening cylindrical portion (4112) is abutted to one side, far away from the end cover plate portion (131), of the connecting boss, of the cylindrical portion (4113) faces the end face of the opening cylindrical portion (4112) and one side face, connected with the connecting boss portion (132), of the end cover plate portion (131) is abutted to one side face.

3. The pump of claim 2, wherein two guide ribs (133) are protruded from one side surface of the connecting boss portion (132) far away from the end cover plate portion (131), the two guide ribs (133) are arranged oppositely and at intervals, the extending direction of the guide ribs (133) is the same as the axial direction of the pump column portion (411), a guide sliding groove with an opening facing the other guide rib (133) is formed between the guide ribs (133) and the connecting boss, and the guide sliding groove penetrates through one end of the guide ribs (133) far away from the cover sealing portion (134);

two opening side edges of the opening cylindrical part (4112) are respectively extended outwards to form an extending side part (417), and the two extending side parts (417) are respectively inserted into the two guide sliding grooves and can be in sliding connection with the groove walls of the corresponding guide sliding grooves.

4. The pump according to claim 3, wherein a positioning post (135) is protruded from one end of the guide rib (133) away from the cover portion (134), a connecting lug (418) is extended from one end of the extending side portion (417) facing the cylindrical portion (4113) in a direction away from the other extending side portion (417), a positioning hole (4181) is formed in the connecting lug (418) in a penetrating manner, and the positioning post (135) is inserted into the positioning hole (4181).

5. Pump according to claim 1, characterized in that said pump body (4) comprises:

the pump comprises a pump body (41), wherein the pump body (41) comprises a connecting cover part (412) and a pump column part (411) which are connected, the pump column part (411) is provided with a pump cavity (4111) in a penetrating manner, one end of the pump column part (411) is inserted into the limiting groove (1341), and the other end of the pump column part (411) is connected with the connecting cover part (412);

the valve mounting plate (43), the valve mounting plate (43) is connected to one side of the connecting cover portion (412) far away from the pump column portion (411), the valve mounting plate (43) is provided with the liquid inlet (432) and the liquid outlet (431), and the liquid inlet (432) and the liquid outlet (431) are respectively communicated with the pump cavity (4111) in a sealing manner;

pump top cap (42), its with connect lid (412) lock and connect, valve mounting panel (43) connect in pump main part (41) with between pump top cap (42), inlet channel and liquid outlet channel have been seted up on pump top cap (42), inlet channel's one end and corresponding inlet (432) are sealed to be communicated, inlet channel's the other end and outside intercommunication, liquid outlet channel's one end and corresponding liquid outlet (431) are sealed to be communicated, liquid outlet channel's the other end and outside intercommunication.

6. The pump of claim 5, wherein each of said inlet channels has an inlet slot in facing communication with said inlet (432), and each of said outlet channels has an outlet slot in facing communication with said outlet (431);

pump top cap (42) with be provided with first sealing member (2) between valve mounting panel (43), first sealing member (2) are "8" font structure, first sealing member (2) include two first seal ring portion and connect in two first junction between the first seal ring portion, state two of first sealing member (2) first seal ring portion encircles respectively the correspondence the feed liquor notch with go out the liquid notch setting, first junction is located the feed liquor notch with go out between the liquid notch.

7. The pump according to claim 6, characterized in that a first sealing groove (4238) is formed in a surface of the pump top cover (42) facing the pump cavity (4111), and the shape of the first sealing groove (4238) is matched with the shape of the first sealing element (2);

pump top cap (42) orientation the protruding first muscle (4236) of keeping off of feed liquor notch and encircleing of keeping off of one end of valve mounting panel (43) are equipped with and are encircleed the first muscle (4236) of keeping off of liquid notch and keep off muscle (4237), first fender muscle (4236) with second fender muscle (4237) form the interior cell wall of first seal groove (4238).

8. The pump of claim 7, wherein the valve mounting plate (43) is provided with a positioning boss (436) protruding toward a side of the pump top cover (42), the shape of the positioning boss (436) is matched with the shape of the first seal (2), the positioning boss (436) is inserted into the first seal groove (4238) toward an end of the pump top cover (42), and the first seal (2) is pressed between the groove bottom of the first seal groove (4238) and the positioning boss (436).

9. The pump according to claim 5, wherein a side of the valve mounting plate (43) facing the pump body (41) is provided with a convex column (434) protruding on the outer periphery of the liquid outlet (431); the valve mounting plate (43) faces towards one side face of the pump top cover (42) and is provided with a convex column (434) in a protruding mode on the periphery of the liquid inlet (432).

10. A washing machine comprising an automatic dosing system for dosing detergent using a pump according to any of claims 1-9.

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