CN220955987U - Diaphragm pump with non-return function - Google Patents
Diaphragm pump with non-return function Download PDFInfo
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- CN220955987U CN220955987U CN202322284125.9U CN202322284125U CN220955987U CN 220955987 U CN220955987 U CN 220955987U CN 202322284125 U CN202322284125 U CN 202322284125U CN 220955987 U CN220955987 U CN 220955987U
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- 239000007788 liquid Substances 0.000 claims abstract description 199
- 238000007789 sealing Methods 0.000 claims description 18
- 239000012528 membrane Substances 0.000 claims description 15
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000012530 fluid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
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Abstract
The application relates to a diaphragm pump with a non-return function, which belongs to the technical field of diaphragm pumps and comprises a pump body and a driving mechanism, wherein the pump body comprises an upper pump body and a lower pump body which are matched with each other and are covered together, a liquid inlet cavity and a liquid outlet cavity are formed between the upper pump body and the lower pump body, a liquid inlet pipeline communicated with the liquid inlet cavity is arranged in the upper pump body, a liquid outlet port of the liquid inlet pipeline is arranged at the center of the liquid inlet cavity, a liquid outlet pipeline communicated with the liquid outlet cavity is also arranged in the upper pump body, and the liquid inlet port of the liquid outlet pipeline is eccentrically arranged in the liquid outlet cavity. The application has novel and compact structure, when the motor stops moving, the first spring and the second spring recover deformation respectively, the first spring pushes the liquid inlet valve plate to be abutted against the port of the liquid inlet flow channel, the second spring pushes the liquid outlet valve plate to be abutted against the port of the liquid outlet hole, the channel is closed, the non-return function is realized, and the whole pump body has simpler structure and is easy to produce and manufacture.
Description
Technical Field
The application relates to the technical field of diaphragm pumps, in particular to a miniature diaphragm pump with a non-return function, which is applied to small household appliances.
Background
The diaphragm type liquid pump is characterized in that a motor provides circular motion, a diaphragm in the liquid pump is made to do reciprocating motion by a mechanical device, so that air in a pump cavity is compressed and stretched, pressure difference is generated between a water outlet hole or a water inlet and external atmospheric pressure under the action of a one-way valve plate, water is pressed into the water inlet under the action of the pressure difference, and then the water is discharged from the water outlet. The diaphragm liquid pump has been well applied in occasions such as small household appliances, medical appliances and the like.
The existing diaphragm pump is limited by the structure and the working principle, and is universally used as a transmission tool of a fluid medium, can not check or shut off, and needs to be externally connected with a one-way check valve, so that the diaphragm pump has the advantages of large volume, high cost and low assembly efficiency.
Chinese patent publication No. CN110821798B discloses a tandem diaphragm pump with non-return and anti-leakage functions, which comprises a housing mechanism, a diaphragm mechanism, a driving mechanism and a non-return mechanism. The check ball is supported at a first opening where the second bag cavity is communicated with the third containing cavity, and the return spring is supported between the check ball and the upper cover, and the check mechanism is used for preventing external solution from flowing back to the second bag cavity.
The non-return mechanism in this application can realize the function of non return and closure, but it still needs to additionally reserve the position of dress non-return mechanism on the pump body to still have the problem that bulky, with high costs and assembly efficiency are low.
Therefore, there is a need to develop a miniature diaphragm pump that is small, low cost and efficient to assemble for better use in the field of small appliances.
Disclosure of utility model
The application aims to provide a diaphragm pump with a non-return function, so as to solve the problems in the background art.
In order to achieve the above purpose, the application provides a diaphragm pump with a non-return function, which adopts the following technical scheme:
The utility model provides a take diaphragm pump of non return function, includes pump body and actuating mechanism, the pump body includes the upper pump body and the lower pump body that mutually support and cover together, be formed with inlet chamber and play liquid chamber between the upper pump body with down the pump body down, be provided with the feed liquor pipeline that communicates to the inlet chamber in the upper pump body, the play liquid port setting of feed liquor pipeline is in the center department of inlet chamber, still be provided with the liquid pipeline that communicates to the play liquid chamber in the upper pump body, the inlet port eccentric arrangement of liquid pipeline is in go out the liquid intracavity, movable mounting has the inlet valve piece in the inlet chamber, movable mounting has the outlet valve piece in the play liquid chamber, down the pump body is kept away from the lateral wall in inlet chamber has been seted up spherical membrane chamber, spherical membrane intracavity matches and is provided with the diaphragm, the play liquid hole has been seted up to the position in spherical membrane intracavity corresponding to the liquid chamber, the play liquid hole sets up with the play liquid port of feed liquor pipeline is different axle, the position in spherical membrane intracavity is corresponding to the liquid chamber has the play liquid hole to open to the liquid center department of liquid chamber.
The middle part of one side of the liquid inlet cavity, which is close to the liquid suction hole, is provided with a first bulge protruding out of the surface of the liquid suction hole, the periphery of the first bulge is provided with a first groove, a first spring is fixed in the first groove, one end of the first spring is fixed on the central side wall of the liquid inlet valve plate, and the liquid inlet valve plate can be abutted against the surface of the liquid outlet port of the liquid inlet pipeline under the action of the elasticity of the first spring;
the middle part of one side of the liquid outlet cavity, which is close to the liquid outlet pipeline, is provided with a second bulge protruding out of the surface of the liquid inlet port of the liquid outlet pipeline, the periphery of the second bulge is provided with a second groove, a second spring is fixed in the second groove, one end of the second spring is fixed on the central side wall of the liquid outlet valve plate, and the liquid outlet valve plate can be abutted against the surface of the liquid outlet hole under the action of the elasticity of the second spring;
the driving mechanism is used for driving the diaphragm to reciprocate.
The driving mechanism comprises a box body, a motor, a connecting shaft, a bearing, an eccentric wheel and a box cover, wherein the motor is installed on the box body, the eccentric wheel is installed on an output shaft of the motor, the bearing is sleeved on the surface of the eccentric wheel, the bearing is installed on the inner wall of the connecting shaft, the motor drives the connecting shaft to reciprocate through the eccentric wheel, a diaphragm is connected with the connecting shaft, the box body is connected with a lower pump body in a matched mode, and the peripheral side of the diaphragm is pressed and fixed by the lower pump body and the box body.
Preferably, the surfaces of the liquid inlet valve plate and the liquid outlet valve plate are symmetrically provided with two arc-shaped liquid penetrating grooves.
By adopting the technical scheme, the ribs are arranged between the two arc-shaped liquid penetrating grooves, and the design mode can increase the uniformity of stress during sealing.
Preferably, in order to further improve the sealing effect, a plurality of first sealing ring protrusions which are uniformly distributed are integrally formed on the surface of one side, close to the liquid inlet pipeline, of the liquid inlet cavity, and the protruding end faces of the first sealing ring protrusions and the liquid outlet port of the liquid inlet pipeline are located on the same plane;
the liquid outlet cavity is close to the second sealing ring bulges which are uniformly distributed on one side surface of the liquid outlet hole in an integrated mode, and the convex end surface of the second sealing ring bulges and the surface of the liquid outlet hole are located on the same plane.
In summary, the present application includes at least one of the following beneficial technical effects: the diaphragm pump is novel and compact in structure, when the motor stops moving, the first spring and the second spring recover deformation respectively, the first spring pushes the liquid inlet valve plate to be abutted against the port of the liquid inlet flow channel, the second spring pushes the liquid outlet valve plate to be abutted against the port of the liquid outlet hole, the channel is closed, the non-return function is realized, the whole pump body is simple in structure, easy to produce and manufacture and low in cost, meanwhile, the volume of the pump cannot be increased due to non-return of the springs, and the assembly is simple.
Drawings
Fig. 1 is a schematic overall structure of an embodiment of the present application.
Fig. 2 is a schematic diagram of an exploded structure for embodying a pump body in an embodiment of the present application.
Fig. 3 is a schematic diagram of an explosion structure for showing the pump body at different angles according to an embodiment of the present application.
Fig. 4 is a schematic diagram of an exploded structure for embodying a driving mechanism in an embodiment of the present application.
Fig. 5 is a schematic structural diagram of a liquid inlet valve plate according to an embodiment of the present application.
Reference numerals illustrate: 1. a pump body; 11. an upper pump body; 111. a liquid inlet pipe; 112. a liquid outlet pipe; 12. a lower pump body; 121. a spherical membrane cavity; 13. a liquid inlet cavity; 131. a first protrusion; 132. a first spring; 14. a liquid outlet cavity; 141. a second protrusion; 142. a second spring; 2. a driving mechanism; 21. a case; 22. a motor; 23. a connecting shaft; 24. a bearing; 25. an eccentric wheel; 26. a case cover; 3. a liquid inlet valve plate; 4. a liquid outlet valve plate; 5. a diaphragm sheet; 6. a liquid suction hole; 7. a liquid outlet hole; 8. arc-shaped liquid penetrating groove; 9. the first sealing ring is convex; 10. the second seal ring is convex.
Detailed Description
The application is described in further detail below with reference to fig. 1-5.
The embodiment of the application discloses a diaphragm pump with a non-return function, referring to fig. 1-3, the diaphragm pump comprises a pump body 1 and a driving mechanism 2, wherein the pump body 1 comprises an upper pump body 11 and a lower pump body 12 which are matched with each other and are covered together, a liquid inlet cavity 13 and a liquid outlet cavity 14 are formed between the upper pump body 11 and the lower pump body 12, a liquid inlet pipeline 111 communicated with the liquid inlet cavity 13 is arranged in the upper pump body 11, a liquid outlet port of the liquid inlet pipeline 111 is arranged at the center of the liquid inlet cavity 13, a liquid outlet pipeline 112 communicated with the liquid outlet cavity 14 is also arranged in the upper pump body 11, the liquid inlet port of the liquid outlet pipeline 112 is eccentrically arranged in the liquid outlet cavity 14, a liquid inlet valve plate 3 is movably arranged in the liquid inlet cavity 13, a liquid outlet valve plate 4 is movably arranged in the liquid outlet cavity 14, a spherical membrane cavity 121 is arranged on the side wall of the lower pump body 12 far away from the liquid inlet cavity 13, a diaphragm 5 is arranged in the spherical membrane cavity 121 in a matched manner, a liquid outlet hole 6 is formed in the position corresponding to the liquid outlet port of the liquid inlet cavity 13, the liquid outlet port of the liquid inlet pipeline 111 is not coaxially arranged, the liquid outlet hole 6 is arranged at the position corresponding to the liquid outlet port of the liquid outlet cavity 14, and the liquid outlet hole 7 is communicated with the liquid outlet hole 7 in the position corresponding to the liquid outlet hole 14;
The middle part of one side of the liquid inlet cavity 13, which is close to the liquid suction hole 6, is provided with a first bulge 131 protruding out of the surface of the liquid suction hole 6, the port position of the liquid suction hole 6 in the liquid inlet cavity 13 is lower than the end face of the first bulge 131, when the liquid inlet valve plate 3 is propped against the first bulge 131, a liquid suction gap is formed between the liquid inlet valve plate 3 and the liquid suction hole 6, the periphery of the first bulge 131 is provided with a first groove, a first spring 132 is fixed in the first groove, one end of the first spring 132 is fixed on the central side wall of the liquid inlet valve plate 3, and the liquid inlet valve plate 3 can be propped against the surface of the liquid outlet port of the liquid inlet pipeline 111 under the elastic force of the first spring 132;
the middle part of one side of the liquid outlet cavity 14, which is close to the liquid outlet pipeline 112, is provided with a second bulge 141 protruding out of the liquid inlet port surface of the liquid outlet pipeline 112, the port position of the liquid outlet pipeline 112 in the liquid outlet cavity 14 is lower than the end surface of the second bulge 141, when the liquid outlet valve plate 4 is propped against the second bulge 141, a liquid outlet gap is formed between the liquid outlet valve plate 4 and the liquid outlet pipeline 112, the periphery of the second bulge 141 is provided with a second groove, a second spring 142 is fixed in the second groove, one end of the second spring 142 is fixed on the central side wall of the liquid outlet valve plate 4, and the liquid outlet valve plate 4 can be propped against the surface of the liquid outlet hole 7 under the elastic force of the second spring 142.
Referring to fig. 4, the driving mechanism 2 is configured to drive the diaphragm 5 to reciprocate, the driving mechanism 2 includes a housing 21, a motor 22, a connecting shaft 23, a bearing 24, an eccentric wheel 25 and a cover 26, the motor 22 is mounted on the housing 21, the eccentric wheel 25 is mounted on an output shaft of the motor 22, the bearing 24 is sleeved on a surface of the eccentric wheel 25, the bearing 24 is mounted on an inner wall of the connecting shaft 23, the motor 22 drives the connecting shaft 23 to reciprocate through the eccentric wheel 25, the diaphragm 5 is connected with the connecting shaft 23, the housing 21 is connected to the lower pump body 12 in a matching manner, and an umbrella-shaped edge of the diaphragm 5 is pressed and fixed by the lower pump body 12 and the housing 21.
The working principle of the pump body is as follows:
The motor 22 works, the motor 22 rotates to drive the eccentric wheel 25 to rotate, the eccentric wheel 25 enables the diaphragm 5 to reciprocate through the connecting shaft 23 to suck and push out fluid, when the diaphragm 5 moves to the right, the inside of the spherical membrane cavity 121 is negative pressure, the liquid outlet valve plate 4 can be directly adsorbed and abutted against the port of the liquid outlet hole 7, the liquid inlet valve plate 3 can be adsorbed so as to be separated from the port of the liquid inlet pipeline 111, the liquid passes through the liquid inlet valve plate 3 and flows into the spherical membrane cavity 121 through the liquid suction hole 6, the diaphragm 5 moves to the left, the liquid inlet valve plate 3 is abutted against the port of the liquid inlet pipeline 111 under the action of thrust and the elasticity of the first spring 132 to realize sealing, the liquid outlet valve plate 4 is separated from the port of the liquid outlet hole 7 under the action of thrust, and the liquid passes through the liquid outlet valve plate 4 and is pushed out through the liquid outlet pipeline 112;
When the motor 22 stops moving, the first spring 132 and the second spring 142 recover to deform respectively, the first spring 132 pushes the liquid inlet valve plate 3 to be abutted against the port of the liquid inlet flow channel, the second spring 142 pushes the liquid outlet valve plate 4 to be abutted against the port of the liquid outlet hole 7, so that the effect of a check valve is formed, and the check function of the diaphragm pump is realized.
Referring to fig. 3 and 5, two arc-shaped liquid-permeable grooves 8 are symmetrically formed in the surfaces of the liquid inlet valve plate 3 and the liquid outlet valve plate 4, ribs are arranged between the two arc-shaped liquid-permeable grooves 8, and in this design mode, stress uniformity in sealing can be improved.
Referring to fig. 2 and 3, in order to further improve the sealing effect, a plurality of first sealing ring protrusions 9 which are uniformly distributed are integrally formed on the surface of one side, close to the liquid inlet pipeline 111, of the liquid inlet cavity 13, and the protruding end surface of the first sealing ring protrusion 9 and the liquid outlet port of the liquid inlet pipeline 111 are positioned on the same plane;
The surface of one side of the liquid outlet cavity 14, which is close to the liquid outlet hole 7, is integrally formed with a plurality of second sealing ring protrusions 10 which are uniformly distributed, and the protruding end surfaces of the second sealing ring protrusions 10 are positioned on the same plane with the surface of the liquid outlet hole 7.
The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape, principle and application direction of the present application should be covered in the protection scope of the present application.
Claims (4)
1. A diaphragm pump with non-return function, characterized in that: the novel pump comprises a pump body (1) and a driving mechanism (2), wherein the pump body (1) comprises an upper pump body (11) and a lower pump body (12) which are matched with each other and are covered together, a liquid inlet cavity (13) and a liquid outlet cavity (14) are formed between the upper pump body (11) and the lower pump body (12), a liquid inlet pipeline (111) communicated to the liquid inlet cavity (13) is arranged in the upper pump body (11), a liquid outlet port of the liquid inlet pipeline (111) is arranged at the center of the liquid inlet cavity (13), a liquid outlet pipeline (112) communicated to the liquid outlet cavity (14) is further arranged in the upper pump body (11), the liquid inlet port of the liquid outlet pipeline (112) is eccentrically arranged in the liquid outlet cavity (14), a liquid inlet valve plate (3) is movably arranged in the liquid outlet cavity (14), a spherical membrane cavity (121) is formed in the side wall of the lower pump body (12) away from the liquid inlet cavity (13), the spherical membrane cavity (121) is arranged at the position, which is matched with the liquid outlet port (6) and is arranged at the position, which is matched with the liquid outlet port (6), a liquid outlet hole (7) is arranged in the spherical membrane cavity (121) corresponding to the liquid outlet cavity (14), the liquid outlet hole (7) is communicated to the center of the liquid outlet cavity (14),
The middle part of one side of the liquid inlet cavity (13) close to the liquid suction hole (6) is provided with a first bulge (131) protruding out of the surface of the liquid suction hole (6), the periphery of the first bulge (131) is provided with a first groove, a first spring (132) is fixed in the first groove, one end of the first spring (132) is fixed on the central side wall of the liquid inlet valve plate (3), the liquid inlet valve plate (3) can be abutted against the surface of the liquid outlet port of the liquid inlet pipeline (111) under the elastic action of the first spring (132),
The middle part of one side of the liquid outlet cavity (14) close to the liquid outlet pipeline (112) is provided with a second bulge (141) protruding out of the surface of the liquid inlet port of the liquid outlet pipeline (112), the periphery of the second bulge (141) is provided with a second groove, a second spring (142) is fixed in the second groove, one end of the second spring (142) is fixed on the central side wall of the liquid outlet valve block (4), the liquid outlet valve block (4) can be abutted against the surface of the liquid outlet hole (7) under the elastic action of the second spring (142),
The driving mechanism (2) is used for driving the diaphragm (5) to reciprocate.
2. The membrane pump with a non-return function according to claim 1, wherein: the driving mechanism (2) comprises a box body (21), a motor (22), a connecting shaft (23), a bearing (24), an eccentric wheel (25) and a box cover (26), wherein the motor (22) is installed on the box body (21), the eccentric wheel (25) is installed on an output shaft of the motor (22), the bearing (24) is sleeved on the surface of the eccentric wheel (25), the bearing (24) is installed on the inner wall of the connecting shaft (23), the motor (22) drives the connecting shaft (23) to reciprocate through the eccentric wheel (25), a diaphragm (5) is connected with the connecting shaft (23), the box body (21) is connected on the lower pump body (12) in a matched mode, and the periphery of the diaphragm (5) is pressed and fixed by the lower pump body (12) and the box body (21).
3. The membrane pump with a non-return function according to claim 1, wherein: two arc-shaped liquid penetrating grooves (8) are symmetrically formed in the surfaces of the liquid inlet valve plate (3) and the liquid outlet valve plate (4).
4. The membrane pump with a non-return function according to claim 1, wherein: a plurality of first sealing ring protrusions (9) which are uniformly distributed are integrally formed on the surface of one side of the liquid inlet cavity (13) close to the liquid inlet pipeline (111), the protruding end surface of the first sealing ring protrusions (9) and the liquid outlet port of the liquid inlet pipeline (111) are positioned on the same plane,
The liquid outlet cavity (14) is close to a side surface of the liquid outlet hole (7), a plurality of second sealing ring protrusions (10) which are uniformly distributed are integrally formed on the side surface of the liquid outlet hole, and the protruding end surfaces of the second sealing ring protrusions (10) and the surface of the liquid outlet hole (7) are located on the same plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322284125.9U CN220955987U (en) | 2023-08-24 | 2023-08-24 | Diaphragm pump with non-return function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322284125.9U CN220955987U (en) | 2023-08-24 | 2023-08-24 | Diaphragm pump with non-return function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220955987U true CN220955987U (en) | 2024-05-14 |
Family
ID=91014459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322284125.9U Active CN220955987U (en) | 2023-08-24 | 2023-08-24 | Diaphragm pump with non-return function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220955987U (en) |
-
2023
- 2023-08-24 CN CN202322284125.9U patent/CN220955987U/en active Active
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