CN215928479U - Diaphragm valve suitable for air pump - Google Patents
Diaphragm valve suitable for air pump Download PDFInfo
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- CN215928479U CN215928479U CN202122347405.0U CN202122347405U CN215928479U CN 215928479 U CN215928479 U CN 215928479U CN 202122347405 U CN202122347405 U CN 202122347405U CN 215928479 U CN215928479 U CN 215928479U
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- valve body
- diaphragm
- air pump
- sealing
- upper valve
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Abstract
The utility model discloses a diaphragm valve suitable for an air pump, which comprises an air pump, an upper valve body and a lower valve body which are mutually communicated, wherein the upper valve body is communicated with the air pump, two sides of the lower valve body are communicated, a sealing diaphragm for controlling whether two sides of the lower valve body are communicated or not is arranged between the upper valve body and the lower valve body, the output end of the air pump is connected with an air nozzle penetrating into the upper valve body, a sealing connecting piece is arranged on the upper valve body and used for plugging the joint of the end part of the sealing diaphragm and the upper valve body and the lower valve body, and a retraction piece is arranged in the upper valve body and connected with the middle part of the sealing diaphragm. According to the diaphragm valve suitable for the air pump, due to the arrangement of the sealing connecting piece, the flexible sealing diaphragm can be better attached and sealed with the extrusion block and the connecting block after being pressed, the sealing effect is better, parts above the diaphragm valve are not corroded by media, and meanwhile, the stretching/rebounding of the diaphragm valve is assisted by the arrangement of the retraction piece, so that the defect of the sealing diaphragm in the diaphragm valve is overcome.
Description
Technical Field
The utility model relates to the technical field of valve equipment, in particular to a diaphragm valve suitable for an air pump.
Background
Air pumps, i.e. "air pumps", a diaphragm valve device suitable for air pumps to remove air from an enclosed space or to add air from an enclosed space. The working principle of the air pump is as follows: the engine drives the air pump crankshaft through two V-belts, so that the piston is driven to inflate, the inflated air is guided into the air storage cylinder through the air guide pipe, and on the other hand, the air storage cylinder guides the air in the air storage cylinder into the pressure regulating valve fixed on the air pump through the air guide pipe, so that the air pressure in the air storage cylinder is controlled.
A pneumatic diaphragm valve is a shut-off valve. The opening and closing part is a diaphragm made of soft material, and separates the inner cavity of the valve body from the inner cavity of the valve cover and the driving part, so that the pneumatic diaphragm valve is called. The working process of the pneumatic diaphragm valve is as follows: when the compressed air is not accessed, the spring presses the movable baffle plate to press the membrane through the push rod, so that the membrane is attached to the conical protrusion, and the valve body is closed. But because the diaphragm has short service life, the diaphragm is easy to lose the stretching/rebounding characteristics after long-term use, and meanwhile, the sealing performance is relatively poor after long-term use, dust is easy to accumulate in the valve body, the service life of the diaphragm valve is reduced,
in order to solve the problems, the scheme is developed accordingly.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
Aiming at the defects of the prior art, the utility model provides a diaphragm valve suitable for an air pump, which solves the problems in the background technology.
(II) technical scheme
In order to achieve the purpose, the utility model is realized by the following technical scheme: a diaphragm valve suitable for an air pump comprises an air pump, an upper valve body and a lower valve body which are communicated with each other, wherein the upper valve body is communicated with the air pump, two sides of the lower valve body are communicated with each other, a sealing diaphragm which controls two sides of the lower valve body to be communicated or not is arranged between the upper valve body and the lower valve body, the output end of the air pump is connected with an air nozzle penetrating into the upper valve body, a sealing connecting piece is arranged on the upper valve body and used for plugging the end part of the sealing diaphragm and the joint of the upper valve body and the lower valve body, a retraction piece is arranged in the upper valve body and connected with the middle part of the sealing diaphragm and used for driving the sealing diaphragm to retract when the air pressure is not applied, and two sides of the valve body are communicated.
Preferably, the retraction piece comprises a spring which is arranged in the vertical direction, the upper end of the spring is connected with the top of the inner wall of the upper valve body, the lower end of the spring is connected with a pull rod, the pull rod penetrates through the sealing diaphragm and extends to the lower part of the sealing diaphragm, and gaskets are attached to the upper side and the lower side of the joint of the pull rod and the sealing diaphragm.
Preferably, the bottom of the inner wall of the lower valve body is connected with a bulge, the bulge sinks from the middle part to two sides, and the middle part is provided with an arc-shaped lower notch, so that the sealing diaphragm is tightly attached and sealed with the lower notch when being pressed and moved downwards.
Preferably, the lower notch is provided with a containing hole with a size smaller than that of the lower notch, and the lower end of the pull rod is positioned in the containing hole.
Preferably, the sealing connecting piece comprises connecting blocks arranged on two sides of a connection end of the upper valve body and the lower valve body, the connecting blocks are integrally formed by two connecting blocks which are vertically crossed, two end parts of the sealing membrane are respectively bent downwards to a vertical surface along a horizontal plane of the connecting blocks, and the sealing connecting piece and the connecting blocks are clamped, sealed and fixed through an extrusion block.
Preferably, the extrusion block is horizontally arranged at the bottom of the inner wall of the upper valve body, an opening is formed in the outer side of the extrusion block, a threaded through hole is formed in the corresponding position of the side wall of the upper valve body, the opening is matched with the threaded through hole in size, and the extrusion block can be pushed inwards and fixed through an external bolt.
Preferably, an arc port is formed at the joint of the vertical part and the horizontal part of the connecting block.
(III) advantageous effects
After adopting the technical scheme, compared with the prior art, the utility model has the following advantages: according to the diaphragm valve suitable for the air pump, due to the arrangement of the sealing connecting piece, the flexible sealing diaphragm can be better attached and sealed with the extrusion block and the connecting block after being pressed, the sealing effect is better, parts above the diaphragm valve are not corroded by media, and meanwhile, the stretching/rebounding of the diaphragm valve is assisted by the arrangement of the retraction piece, so that the defect of the sealing diaphragm in the diaphragm valve is overcome.
Drawings
FIG. 1 is a schematic view of the present invention;
FIG. 2 is a front view of the present invention;
FIG. 3 is a front cross-sectional view of the present invention;
FIG. 4 is an enlarged view of a portion of the structure of FIG. 3 according to the present invention.
In the figure: 1 air pump, 2 upper valve bodies, 3 lower valve bodies, 4 sealing membranes, 5 air nozzles, 6 sealing connecting pieces, 61 connecting blocks, 62 extruding blocks, 7 retracting pieces, 71 springs, 72 pull rods, 73 gaskets, 8 bulges, 9 lower notches, 10 containing holes, 11 openings, 12 threaded through holes and 13 arcs.
Detailed Description
The utility model is explained in more detail below with reference to the figures and examples.
As shown in fig. 1-4: a diaphragm valve suitable for an air pump comprises an air pump 1, an upper valve body 2 and a lower valve body 3 which are mutually communicated, wherein the upper valve body 2 is communicated with the air pump 1, two sides of the lower valve body 3 are communicated, a sealing diaphragm 4 for controlling whether two sides of the lower valve body 3 are communicated or not is arranged between the upper valve body 2 and the lower valve body 3, and the output end of the air pump 1 is connected with an air nozzle 5 penetrating into the upper valve body 2.
And the upper valve body 2 is provided with a sealing connecting piece 6 which is used for plugging the joint of the end part of the sealing membrane 4 and the upper valve body 2 and the lower valve body 3.
The sealing connecting piece 6 comprises connecting blocks 61 arranged on two sides of a connection end of the upper valve body 2 and the lower valve body 3, the connecting blocks 61 are integrally formed by two connecting blocks which are vertically crossed, two ends of the sealing membrane 4 are bent downwards to a vertical surface along a horizontal plane of the connecting blocks 61 respectively, and are clamped, sealed and fixed with the connecting blocks 61 through an extrusion block 62.
The extrusion block is horizontally arranged at the bottom of the inner wall of the upper valve body 2, an opening 11 is formed in the outer side of the extrusion block, a threaded through hole 12 is formed in the corresponding position of the side wall of the upper valve body 2, the opening 11 is matched with the threaded through hole 12 in size, and the extrusion block can be pushed inwards and fixed through an external bolt.
The bolt is screwed into the threaded through hole 12 inwards, and the extrusion block is pushed inwards to the connecting block 61 side until the bolt is completely and tightly attached to realize sealing. At the same time, the replacement of the sealing diaphragm 4 is also relatively easy.
As shown in fig. 4, the joint of the vertical part and the horizontal part of the connecting block 61 has an arc 13, and the pressing block 62 is configured to fit the shape of the joint of the sealing membrane 4 and the connecting block 61.
This setting of arc mouth 13 makes to have can be better sealed with the laminating of extrusion piece 62 and connecting block 61 after flexible sealed diaphragm 4 is compressed, and sealed effect is better, and then separates the valve body inner chamber, makes the part of top not corroded by the medium, and the safety in utilization is higher.
The sealing membrane 4 can be made of polytetrafluoroethylene and has stretching/rebounding characteristics.
The upper valve body 2 is internally provided with a retraction piece 7, and the retraction piece 7 is connected with the middle part of the sealing membrane 4 and is used for driving the sealing membrane 4 to retract when not subjected to gas pressure so as to realize the communication of the two sides of the valve body.
The retraction piece 7 comprises a spring 71, the spring 71 is arranged in the vertical direction, the upper end of the spring 71 is connected with the top of the inner wall of the upper valve body 2, the lower end of the spring is connected with a pull rod 72, the pull rod 72 penetrates through the sealing membrane 4 and extends to the lower part of the sealing membrane, and gaskets 73 are attached to the upper side and the lower side of the joint of the pull rod 72 and the sealing membrane 4.
Because the membrane has short service life and easily loses the stretching/rebounding characteristic after long-term use, the scheme assists the stretching/rebounding by the arrangement of the retraction piece 7.
The spring 71 is arranged to enable the gasket 73 to drive the sealing diaphragm 4 to move upwards and retract, so that the two sides of the lower valve body 3 are communicated.
The gasket 73 serves to fix the position of the connection between the tie rod 72 and the sealing diaphragm 4, while sealing possible minute gaps at the connection. Of course, the gasket 73 may be only disposed on the upper side of the sealing diaphragm 4, and may be made of a relatively rigid material, but the radial dimension is larger than the radial dimension of the corresponding portion of the pull rod 72 (if the gasket 73 is also disposed on the lower side, it is necessary to use a flexible material, and the sealing can be completed along with the deformation of the sealing diaphragm 4).
The bottom of the inner wall of the lower valve body 3 is connected with a bulge 8, the bulge 8 sinks from the middle part to two sides, and the middle part is provided with an arc-shaped lower notch 9, so that the sealing diaphragm 4 is tightly attached and sealed with the lower notch 9 when being pressed and moved downwards.
The lower notch 9 is provided with a containing hole 10 with a size smaller than that of the lower notch 9, and the lower end of the pull rod 72 is positioned in the containing hole 10.
Because flexible diaphragm is certain deformation after pushing down, and certain to a great extent presents the arc, consequently the setting of low notch 9 makes better laminating in protruding 8 tops of flexible diaphragm, realizes sealedly.
It should be noted that the top of the housing hole 10 is relatively smaller in size than the lower part, so that the tie rod 72 in the form of a T can be restrained in position, preventing the seal membrane 4 from being damaged by an excessive retraction size.
In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the utility model. The technical scope of the present invention is not limited to the content of the specification, and the protection scope must be determined by the scope of the claims.
Claims (7)
1. A diaphragm valve suitable for an air pump comprises an air pump, an upper valve body and a lower valve body which are communicated with each other, wherein the upper valve body is communicated with the air pump, two sides of the lower valve body are communicated with each other, a sealing membrane for controlling whether two sides of the lower valve body are communicated or not is arranged between the upper valve body and the lower valve body, and the output end of the air pump is connected with an air nozzle penetrating into the upper valve body, and the diaphragm valve is characterized in that: the upper valve body is provided with a sealing connecting piece which is used for plugging the end part of the sealing membrane and the joint of the upper valve body and the lower valve body, the upper valve body is internally provided with a retraction piece, the retraction piece is connected with the middle part of the sealing membrane and is used for driving the sealing membrane to retract when not subjected to gas pressure, and the two sides of the valve body are communicated.
2. A diaphragm valve adapted for use with an air pump according to claim 1, wherein: the retraction piece comprises a spring, the spring is arranged in the vertical direction, the upper end of the spring is connected with the top of the inner wall of the upper valve body, the lower end of the spring is connected with a pull rod, the pull rod penetrates through the sealing membrane and extends to the lower part of the sealing membrane, and gaskets are attached to the upper side and the lower side of the joint of the pull rod and the sealing membrane.
3. A diaphragm valve adapted for use with an air pump according to claim 2, wherein: the bottom of the inner wall of the lower valve body is connected with a bulge, the bulge sinks from the middle part to two sides, and the middle part is provided with an arc-shaped lower notch, so that the sealing diaphragm is tightly attached and sealed with the lower notch when moving downwards under pressure.
4. A diaphragm valve adapted for use with an air pump according to claim 3, wherein: the lower notch is provided with a containing hole with the size smaller than that of the lower notch, and the lower end of the pull rod is positioned in the containing hole.
5. A diaphragm valve adapted for use with an air pump according to claim 1, wherein: the sealing connecting piece comprises connecting blocks arranged on two sides of a connecting end of the upper valve body and the lower valve body, the connecting blocks are integrally formed by two connecting blocks which are vertically crossed, and two end parts of the sealing diaphragm are bent downwards to a vertical surface along a horizontal plane of the connecting blocks respectively and are clamped, sealed and fixed with the connecting blocks through an extrusion block.
6. A diaphragm valve adapted for use with an air pump according to claim 5, wherein: the extrusion block is horizontally arranged at the bottom of the inner wall of the upper valve body, an opening is formed in the outer side of the extrusion block, a threaded through hole is formed in the corresponding position of the side wall of the upper valve body, the opening is matched with the threaded through hole in size, and the extrusion block can be pushed inwards and fixed through an external bolt.
7. A diaphragm valve adapted for use with an air pump according to claim 5, wherein: an arc opening is formed at the joint of the vertical part and the horizontal part of the connecting block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122347405.0U CN215928479U (en) | 2021-09-27 | 2021-09-27 | Diaphragm valve suitable for air pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122347405.0U CN215928479U (en) | 2021-09-27 | 2021-09-27 | Diaphragm valve suitable for air pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215928479U true CN215928479U (en) | 2022-03-01 |
Family
ID=80416030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122347405.0U Active CN215928479U (en) | 2021-09-27 | 2021-09-27 | Diaphragm valve suitable for air pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215928479U (en) |
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2021
- 2021-09-27 CN CN202122347405.0U patent/CN215928479U/en active Active
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