CN220354011U

CN220354011U - Miniature diaphragm water pump with anti-adhesion structure

Info

Publication number: CN220354011U
Application number: CN202321960395.0U
Authority: CN
Inventors: 张克海; 邱琼亮; 徐长进
Original assignee: Zhejiang Kebo Electrical Appliances Co ltd
Current assignee: Zhejiang Kebo Electrical Appliances Co ltd
Priority date: 2023-07-24
Filing date: 2023-07-24
Publication date: 2024-01-16
Anticipated expiration: 2033-07-24

Abstract

The utility model relates to a miniature diaphragm water pump with an anti-adhesion structure, wherein a first inflow channel with one end being a liquid inlet and the other end being a flow through port I is arranged in a pump cover; the second unidirectional diaphragm is an integrated part and is provided with a second main diaphragm part and a second elastic connecting part, the second main diaphragm part is connected to the inner wall of the second through hole through the second elastic connecting part, and the second unidirectional diaphragm swings to have a second sealing position for blocking the through hole from the conveying assembly to the liquid outlet channel and a second flowing position far away from the through hole. The device has the advantage of easy opening, and can effectively prevent the risk that the rubber is hardened and multidirectional hard pulled or the whole surface of the sealing surface is contacted and adhered after being solidified by liquid, so that the device is difficult to open or can not be opened.

Description

Miniature diaphragm water pump with anti-adhesion structure

Technical Field

The utility model belongs to the technical field of diaphragm water pumps, and particularly relates to a miniature diaphragm water pump with an anti-adhesion structure.

Background

The miniature water pump is an indispensable device in household appliances, and is used for conveying liquid fluid and increasing liquid pressure, thereby playing a main role in core functions.

The miniature water pump on the market at present has some general defects, for example, the utility model patent with the application number of 202221460231.7 discloses a miniature two-cylinder diaphragm water pump, and a sealing gasket is arranged between a valve body and an upper cover, so that a suction cavity and a discharge cavity are formed by separating the sealing gasket, the suction cavity and the discharge cavity are sealed and separated, an umbrella-shaped diaphragm is arranged at the suction cavity, and a check valve is arranged in the discharge cavity to form a one-way check valve system. The sealing area of the umbrella-shaped diaphragm for the whole structure is large, when part of the liquid diluted by the cleaning liquid works, the umbrella-shaped valve is easy to adhere to the surface of the plastic part and is not easy to open, so that the water pump has high opening pressure or fails to open and can not work normally; meanwhile, the umbrella-shaped diaphragm and the check valve are all independent components, so that the assembly is troublesome and the automation degree is low.

Disclosure of Invention

The utility model aims to overcome the defects and the shortcomings of the prior art and provide a miniature diaphragm water pump with an anti-adhesion structure.

The technical scheme adopted by the utility model is as follows: the miniature diaphragm water pump with the anti-adhesion structure comprises a pump cover, a pump body and a driving assembly, wherein the pump cover is provided with a liquid inlet and a liquid outlet, the pump body is internally provided with a conveying assembly,

the pump cover is connected with the pump body through a sealing gasket, a first through hole and a second through hole are arranged on the sealing gasket,

the first through hole is internally connected with a first unidirectional membrane which forms the action of a unidirectional valve from the liquid inlet to the conveying component, the second through hole is internally connected with a second unidirectional membrane which forms the action of a unidirectional valve from the conveying component to the liquid outlet,

the pump cover is internally provided with a first inflow channel with one end being a liquid inlet and the other end being a flow through port I, the first unidirectional diaphragm is an integrated part and is provided with a main diaphragm part I and an elastic connecting part I, and the main diaphragm part I is connected to the inner wall of the first through hole through the elastic connecting part I and swings to have a first sealing position for blocking the flow through port I and a first flow through position for separating from the flow through port I;

the second unidirectional diaphragm is an integrated part and is provided with a second main diaphragm part and a second elastic connecting part, the second main diaphragm part is connected to the inner wall of the second through hole through the second elastic connecting part, and the second unidirectional diaphragm swings to have a second sealing position for blocking the through hole from the conveying assembly to the liquid outlet channel and a second flowing position far away from the through hole.

Preferably, the conveying assembly comprises a piston which is positioned in the pump body and connected with the driving assembly, the piston is provided with a first bag cavity, the pump cover is connected with the pump body and forms an inflow channel which is communicated with the liquid inlet to the first bag cavity and an outflow channel which is communicated with the first bag cavity to the liquid outlet,

the pump body also comprises a unidirectional base matched with the sealing gasket, a third through hole and a fourth through hole are arranged on the unidirectional base,

the inflow channel comprises a first inflow channel, a first through hole and a third through hole which are communicated in sequence,

the fourth through hole is communicated with the second through hole and the first bag cavity, the size of the second main membrane part is larger than the aperture of the fourth through hole, and the second main membrane part swings to have a second sealing position for blocking the fourth through hole and a second flowing position far away from the fourth through hole.

Preferably, the unidirectional base is provided with a fifth through hole and a first diversion trench, the piston is also provided with a second bag cavity, the sealing gasket is provided with a sixth through hole,

the outflow channel comprises a fourth through hole, a second through hole, a first diversion trench, a second sac cavity, a fifth through hole and a sixth through hole which are communicated in sequence, and the sixth through hole is communicated with the liquid outlet.

Preferably, the second through hole is provided with a first round hole corresponding to the fourth through hole and a second half hole corresponding to one end of the diversion trench, and the second elastic connecting part and the second half hole are positioned at the opposite positions of the circle centers of the first round hole.

Preferably, the first diversion trench is arc-shaped, and the bottom of the sealing gasket is provided with a second diversion trench which forms a mapping relation with the first diversion trench.

Preferably, annular convex lips are concentrically arranged on the upper surface and the lower surface of the sealing gasket at the circumferences of the first through hole, the second through hole, the sixth through hole and the diversion trench.

Preferably, a check valve structure is arranged at the sixth through hole, and the check valve structure comprises a sealing rubber head and check springs with two ends fixed with the sealing rubber head and the pump cover respectively.

Preferably, four corners of the sealing gasket are in arc edge transition or bevel edge transition, and the unidirectional base is provided with a mounting groove matched with the shape of the sealing gasket.

Preferably, the upper surface of the unidirectional base is provided with a positioning convex part along the peripheral side of the sealing gasket, and the pump cover is correspondingly provided with a positioning concave part which forms plug-in fit with the positioning convex part.

Preferably, the four corners of the unidirectional base are provided with first connecting screw holes, the four corners of the pump cover are correspondingly provided with second connecting screw holes, the unidirectional base is in threaded fixation with the pump cover,

at least two guide posts are arranged on the unidirectional base at positions corresponding to the first connecting screw holes, and the first connecting screw holes penetrate through the guide posts to enable the guide posts to have a hollow structure.

The beneficial effects of the utility model are as follows: realize through first one-way diaphragm and second one-way diaphragm that inlet channel and outlet channel's low pressure open, low negative pressure seal effect for this check valve structure has the advantage of easily opening, can prevent effectively that rubber from hardening multidirectional hard-pulling or lead to difficult or unable risk of opening after making the gluing of the whole face contact of sealing face after the liquid solidification.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are required in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that it is within the scope of the utility model to one skilled in the art to obtain other drawings from these drawings without inventive faculty.

FIG. 1 is a partial exploded view of an embodiment of the present utility model;

FIG. 2 is an exploded view of an embodiment of the present utility model;

FIG. 3 is an exploded view of the pump cover and pump body and a fluid flow path according to an embodiment of the present utility model;

FIG. 4 is a top view of a gasket seal according to an embodiment of the present utility model;

FIG. 5 is a bottom view of a gasket seal according to an embodiment of the present utility model;

FIG. 6 is a block diagram of a unidirectional base in accordance with an embodiment of the present utility model;

FIG. 7 is a cross-sectional view of one embodiment of the present utility model;

FIG. 8 is a second cross-sectional view of an embodiment of the present utility model;

in the figure, 1, a pump cover; 2. a pump body; 3. a sealing gasket; 4. a piston; 6. a unidirectional base; 8. a drive assembly; 11. a liquid inlet; 12. a liquid outlet; 13. the second connecting screw hole; 14. a positioning concave part; 31. a first through hole; 32. a second through hole; 33. a sixth through hole; 34. a diversion trench II; 41. a first bladder cavity; 42. a second bladder cavity; 51. a first inflow channel; 52. a first flow through port; 61. a third through hole; 62. a fourth through hole; 63. a fifth through hole; 64. a diversion trench I; 65. a mounting groove; 66. a first connecting screw hole; 67. a guide post; 68. positioning convex parts; 71. a sealing glue head; 72. a backstop spring; 311. a first unidirectional membrane; 321. a second unidirectional membrane; 322. a first round hole; 323. a second half-hole; 3111. a first main diaphragm part; 3112. an elastic connecting part I; 3211. a second main diaphragm part; 3212. and an elastic connecting part II.

Detailed Description

The present utility model will be described in further detail with reference to the accompanying drawings, for the purpose of making the objects, technical solutions and advantages of the present utility model more apparent.

It should be noted that, in the embodiments of the present utility model, all the expressions "first" and "second" are used to distinguish two entities with the same name but different entities or different parameters, and it is noted that the "first" and "second" are only used for convenience of expression, and should not be construed as limiting the embodiments of the present utility model, and the following embodiments are not described one by one.

The terms of direction and position in the present utility model, such as "up", "down", "front", "back", "left", "right", "inside", "outside", "top", "bottom", "side", etc., refer only to the direction or position of the drawing. Accordingly, directional and positional terms are used to illustrate and understand the utility model and are not intended to limit the scope of the utility model.

As shown in fig. 1 to 8, in the embodiment of the present utility model, a micro diaphragm water pump with an anti-adhesion structure includes a pump cover 1, a pump body 2 and a driving component 8, wherein a liquid inlet 11 and a liquid outlet 12 are provided on the pump cover 1, a conveying component is provided in the pump body 2,

the pump cover 1 is connected with the pump body 2 through a sealing gasket 3, a first through hole 31 and a second through hole 32 are arranged on the sealing gasket 3,

a first one-way diaphragm 311 forming the one-way valve function from the liquid inlet to the liquid outlet is connected to the first through hole 31, a second one-way diaphragm 321 forming the one-way valve function from the liquid outlet to the liquid outlet is connected to the second through hole 32,

the pump cover 1 is internally provided with a first inflow channel 51 with one end being a liquid inlet 11 and the other end being a flow through port one 52, the first one-way diaphragm 311 is an integrated piece and is provided with a main diaphragm part one 3111 and an elastic connecting part one 3112, the main diaphragm part one 3111 is connected to the inner wall of the first through hole 31 through the elastic connecting part one 3112 and swings to have a first sealing position for blocking the flow through port one 52 and a first flowing position for separating from the flow through port one 52;

the second unidirectional diaphragm 321 is an integral molding piece and has a second main diaphragm portion 3211 and a second elastic connection portion 3212, the second main diaphragm portion 3211 is connected to the inner wall of the second through hole 32 through the second elastic connection portion 3212, and swings to have a second sealing position for blocking the through hole of the liquid outlet channel of the conveying assembly and a second flowing position far away from the through hole.

Realize through first one-way diaphragm and second one-way diaphragm that inlet channel and outlet channel's low pressure open, low negative pressure seal effect for this check valve structure has the advantage of easily opening, can prevent effectively that rubber from hardening multidirectional hard-pulling or lead to difficult or unable risk of opening after making the gluing of the whole face contact of sealing face after the liquid solidification.

The operation principle of the driving assembly can be seen in particular from the patent application 202221460231.7.

The conveying assembly comprises a piston 4 which is positioned in the pump body 2 and connected with the driving assembly 8, the piston 4 is provided with a first bag cavity 41, the pump cover 1 is connected with the pump body 2 and forms an inflow channel which is communicated with the liquid inlet 11 to the first bag cavity 41 and an outflow channel which is communicated with the first bag cavity 41 to the liquid outlet 12, the pump body 2 further comprises a unidirectional base 6 which is matched with the sealing gasket 3, the unidirectional base 6 is provided with a third through hole 61 and a fourth through hole 62, the inflow channel comprises a first inflow channel 51, a first through hole 31 and a third through hole 61 which are communicated in sequence, the fourth through hole 62 is communicated with the second through hole 32 and the first bag cavity 41, the size of the second main membrane portion 3211 is larger than the aperture of the fourth through hole 62, and swings to have a second sealing position which is used for blocking the fourth through hole 62 and a second flowing position which is far away from the fourth through hole 62. Through the arrangement, the sealing effect of the sealing gasket on the through hole is improved, and meanwhile, the effect that the one-way valve is easy to open and is prevented from being adhered is improved.

The unidirectional base 6 is provided with a fifth through hole 63 and a first diversion trench 64, the piston 4 is also provided with a second sac cavity 42, the sealing gasket 3 is provided with a sixth through hole 33,

the outflow channel comprises a fourth through hole 62, a second through hole 32, a first diversion trench 64, a second sac cavity 42, a fifth through hole 63 and a sixth through hole 33 which are sequentially communicated, and the sixth through hole 33 is communicated with the liquid outlet 12.

The second through hole 32 has a first round hole 322 corresponding to the fourth through hole 62 and a second half hole 323 corresponding to one end of the first guide groove 64, and the second elastic connecting portion 3212 and the second half hole 323 are located at a position opposite to the center of the first round hole 322. Through the arrangement, fluid enters the first diversion trench more smoothly, and the sealing property between the sealing gasket and the first diversion trench is better.

The first diversion trench 64 is arc-shaped, and the bottom of the sealing gasket 3 is provided with a second diversion trench 34 which forms a mapping relation with the first diversion trench 64.

Annular convex lips are concentrically arranged on the upper surface and the lower surface of the sealing gasket 3 around the first through hole 31, the second through hole 32, the sixth through hole 33 and the diversion trench II 34. Through the arrangement, the surface laminating contact between the through hole and each component can be effectively avoided, and the anti-adhesion effect is improved.

The sixth through hole 33 is provided with a check valve structure, and the check valve structure comprises a sealing rubber head 71 and a check spring 72 with two ends respectively fixed with the sealing rubber head 71 and the pump cover 1. When water is discharged, the sealing rubber head is opened by overcoming the elasticity of the non-return spring, liquid flows out, and when the water pump is kept still and does not work, the sealing rubber head is pressed against the one-way base by the pre-pressure of the spring of the non-return spring, so that the outlet is sealed, and the leakage and the outflow of the liquid are prevented.

The triangles in the four corners of the sealing gasket 3 are set to arc edge transition, the rest corners are set to hypotenuse transition, and the unidirectional base 6 is provided with a mounting groove 65 which is matched with the shape of the sealing gasket 3. The structure is easy to assemble and identify when the sealing gasket is assembled on the unidirectional base, and the degree of automation is good.

The upper surface of the unidirectional base 6 is provided with a positioning convex part 68 along the peripheral side of the sealing gasket 3, and the pump cover 1 is correspondingly provided with a positioning concave part 14 which forms plug-in fit with the positioning convex part. The positioning convex part comprises positioning convex strips positioned on two long side sides of the sealing gasket and positioning convex blocks positioned on the short side of the sealing gasket. The structure is easy to position and identify when the pump cover is arranged on the unidirectional base, and is convenient for the assembly and mass production of products.

Four corners of the unidirectional base 6 are provided with first connecting screw holes 66, four corners of the pump cover 1 are correspondingly provided with second connecting screw holes 13, the unidirectional base 6 is in threaded fixation with the pump cover 1,

at least two guide posts 67 are arranged on the unidirectional base 6 at positions corresponding to the first connecting screw holes 66, and the first connecting screw holes 66 penetrate through the guide posts 67 to enable the guide posts 67 to have a hollow structure. The structure is easy to position and identify during assembly, and is convenient for assembly and mass production of products.

The fluid operation process of the device comprises the following steps: as shown by the arrow in fig. 3, the liquid inlet 11 enters the pump cover 1, when the first bladder cavity 41 of the piston 4 is pulled down, negative pressure is formed in the cavity, the second one-way diaphragm 321 of the sealing pad 3 is closed, the first one-way diaphragm 311 is opened, and liquid flows from the first inflow channel 51 into the first bladder cavity 41 of the piston 4 through the first through hole 31 of the sealing pad 3, so that the pressure is balanced; when the first capsule cavity 41 of the piston 4 is ejected, the first unidirectional membrane 311 is closed, the second unidirectional membrane 321 is opened, the liquid flows out from the second through hole 32 into the diversion trench one 64 of the unidirectional base 6 and then flows into the second capsule cavity 42, and when the first capsule cavity 41 is ejected, the corresponding second capsule cavity 42 is inhaled, and at the moment, the sealing glue head 71 is bonded and sealed. When the second bladder cavity 42 is discharged, the second one-way diaphragm 321 is closed, the sealing rubber head 71 is opened, and the liquid flows out from the second bladder cavity 41 of the piston 4 into the pump cover 1 and out from the liquid outlet 12.

The foregoing disclosure is illustrative of the present utility model and is not to be construed as limiting the scope of the utility model, which is defined by the appended claims.

Claims

1. The utility model provides a miniature diaphragm water pump with prevent gluing structure, includes pump cover (1), pump body (2) and drive assembly (8), be provided with inlet (11) and liquid outlet (12) on pump cover (1), be provided with conveying assembly, its characterized in that in pump body (2):

the pump cover (1) is connected with the pump body (2) through a sealing gasket (3), a first through hole (31) and a second through hole (32) are arranged on the sealing gasket (3),

a first unidirectional membrane (311) forming the action of the unidirectional valve from the liquid inlet to the delivery component is connected in the first through hole (31), a second unidirectional membrane (321) forming the action of the unidirectional valve from the delivery component to the liquid outlet is connected in the second through hole (32),

a first inflow channel (51) with one end being a liquid inlet (11) and the other end being a flow through port one (52) is arranged in the pump cover (1), the first unidirectional diaphragm (311) is an integrated piece and is provided with a main diaphragm part one (3111) and an elastic connecting part one (3112), the main diaphragm part one (3111) is connected to the inner wall of the first through hole (31) through the elastic connecting part one (3112) and swings to have a first sealing position for blocking the flow through port one (52) and a first flowing position for separating from the flow through port one (52);

the second unidirectional diaphragm (321) is an integral part and is provided with a second main diaphragm part (3211) and a second elastic connecting part (3212), the second main diaphragm part (3211) is connected to the inner wall of the second through hole (32) through the second elastic connecting part (3212), and the second unidirectional diaphragm swings to have a second sealing position for blocking the through hole from the conveying assembly to the liquid outlet channel and a second flowing position far away from the through hole.

2. The miniature diaphragm water pump with anti-sticking structure of claim 1, wherein: the conveying assembly comprises a piston (4) which is positioned in the pump body (2) and connected with the driving assembly (8), the piston (4) is provided with a first bag cavity (41), the pump cover (1) is connected with the pump body (2) and forms an inflow channel which is communicated with the liquid inlet (11) to the first bag cavity (41) and an outflow channel which is communicated with the first bag cavity (41) to the liquid outlet (12),

the pump body (2) also comprises a one-way base (6) which is matched with the sealing gasket (3), a third through hole (61) and a fourth through hole (62) are arranged on the one-way base (6),

the inflow channel comprises a first inflow channel (51), a first through hole (31) and a third through hole (61) which are communicated in sequence,

the fourth through hole (62) is communicated with the second through hole (32) and the first sac cavity (41), the size of the second main membrane part (3211) is larger than the aperture of the fourth through hole (62), and the second through hole (62) is blocked by a second sealing position and a second through position far away from the fourth through hole (62) in a swinging mode.

3. The miniature diaphragm water pump with anti-sticking structure according to claim 2, wherein: a fifth through hole (63) and a first diversion trench (64) are arranged on the unidirectional base (6), the piston (4) is also provided with a second bag cavity (42), a sixth through hole (33) is arranged on the sealing gasket (3),

the outflow channel comprises a fourth through hole (62), a second through hole (32), a first diversion trench (64), a second bag cavity (42), a fifth through hole (63) and a sixth through hole (33) which are communicated in sequence, and the sixth through hole (33) is communicated with the liquid outlet (12).

4. A micro diaphragm water pump having an anti-sticking structure according to claim 3, wherein: the second through hole (32) is provided with a first round hole (322) corresponding to the fourth through hole (62) and a second half hole (323) corresponding to one end of the first diversion trench (64), and the second elastic connecting part (3212) and the second half hole (323) are positioned at the opposite positions of the circle centers of the first round hole (322).

5. The miniature diaphragm water pump with anti-sticking structure of claim 4, wherein: the first diversion trench (64) is arc-shaped, and the bottom of the sealing gasket (3) is provided with a second diversion trench (34) which forms a mapping relation with the first diversion trench (64).

6. The miniature diaphragm water pump with anti-sticking structure of claim 5, wherein: annular convex lips are concentrically arranged on the upper surface and the lower surface of the sealing gasket (3) at the circumferences of the first through hole (31), the second through hole (32), the sixth through hole (33) and the diversion trench II (34).

7. A micro diaphragm water pump having an anti-sticking structure according to claim 3, wherein: the sixth through hole (33) is provided with a check valve structure, and the check valve structure comprises a sealing rubber head (71) and check springs (72) with two ends fixed with the sealing rubber head (71) and the pump cover (1) respectively.

8. The miniature diaphragm water pump with anti-sticking structure of claim 2, wherein: four corners of the sealing gasket (3) are in arc edge transition or bevel edge transition, and the unidirectional base (6) is provided with a mounting groove (65) which is matched with the shape of the sealing gasket (3).

9. The miniature diaphragm water pump with anti-sticking structure of claim 2, wherein: the upper surface of the unidirectional base (6) is provided with a positioning convex part (68) along the peripheral side of the sealing gasket (3), and the pump cover (1) is correspondingly provided with a positioning concave part (14) which forms plug-in fit with the positioning convex part.

10. The miniature diaphragm water pump with anti-sticking structure of claim 2, wherein: four corners of the unidirectional base (6) are provided with first connecting screw holes (66), four corners of the pump cover (1) are correspondingly provided with second connecting screw holes (13), the unidirectional base (6) is in threaded fixation with the pump cover (1),

at least two guide posts (67) are arranged on the unidirectional base (6) at positions corresponding to the first connecting screw holes (66), and the first connecting screw holes (66) penetrate through the guide posts (67) to enable the guide posts to have a hollow structure.