CN219673368U - High life type two-way valve diaphragm structure - Google Patents
High life type two-way valve diaphragm structure Download PDFInfo
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- CN219673368U CN219673368U CN202320370762.5U CN202320370762U CN219673368U CN 219673368 U CN219673368 U CN 219673368U CN 202320370762 U CN202320370762 U CN 202320370762U CN 219673368 U CN219673368 U CN 219673368U
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- 230000006978 adaptation Effects 0.000 claims description 2
- 239000012528 membrane Substances 0.000 claims 2
- 238000005452 bending Methods 0.000 description 18
- 238000007789 sealing Methods 0.000 description 9
- 230000008093 supporting effect Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 230000002035 prolonged effect Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
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Abstract
The utility model discloses a diaphragm structure of a long-life two-way valve, which comprises a diaphragm and a valve body coaxially arranged with the diaphragm, wherein the center of the diaphragm is provided with a deformable elastic structure, a cavity for placing the diaphragm is arranged in the valve body, the center of the valve body is provided with a channel, the outer circumferential surface of the diaphragm is provided with an annular bulge, and the valve body is provided with an annular groove matched with the annular bulge. The utility model provides a diaphragm structure of a long-service-life two-way valve, wherein the center of the diaphragm can deform along with pressure difference, so that the two-way valve is opened and closed, the structure is simple, and the requirements of various valve structures can be met.
Description
Technical Field
The utility model relates to the technical field of valve diaphragms, in particular to a high-service-life two-way valve diaphragm structure.
Background
The pneumatic diaphragm valve is a special type stop valve, the opening and closing part of which is a diaphragm made of soft materials, and the inner cavity of the valve body is separated from the inner cavity of the valve cover and the driving part, so the pneumatic diaphragm valve is called; the most outstanding characteristic of the pneumatic diaphragm valve is that the diaphragm separates the inner cavity of the lower valve body from the inner cavity of the upper valve cover, so that parts such as a valve rod, a valve clack and the like positioned above the diaphragm are not corroded by media, a packing sealing structure is omitted, and the media can not leak.
The upper end and the lower end of the outer circumference of the diaphragm of the conventional pneumatic diaphragm valve are planes, the diaphragm forms interference seal by the pressing force of the valve cover and the valve body, when the valve is opened, the diaphragm is deformed by fluid pressure, so that tension is generated on the vertical part of the outer circumference, and as the upper end and the lower end of the outer circumference of the diaphragm are planes, when the circular arc surface of the diaphragm is tensioned, the outer circumference can be loosened or separated from the hidden danger of pressing the valve body and the valve cover, so that the outer circumference of the diaphragm leaks air, and finally the diaphragm function is invalid; and the diaphragm with an inner hole at the center of the diaphragm is in interference fit with the lower end of the piston rod of the valve body, so that the structure is complex and the universality is poor.
For example, an "air motor diaphragm valve" disclosed in chinese patent publication No. CN104514912B includes a valve body, a valve cover, a diaphragm, a valve rod, and a driving device, wherein the valve cover is attached to the valve body, the diaphragm is connected between the valve body and the valve cover, the valve rod is capable of sliding relative to the valve cover and is connected with the diaphragm, the driving device includes an air motor and a bushing, the air motor has a power output shaft, the bushing is capable of rotating relative to the valve cover, the power output shaft drives the connecting bushing to drive the bushing to rotate, the bushing is provided with an internal thread, the valve rod is provided with an external thread, and the bushing is screwed with the valve rod. The upper end and the lower end of the outer circumference are planes, the diaphragm forms interference seal by the pressing force of the valve cover and the valve body, when the valve is opened, the diaphragm is deformed by fluid pressure, so that tension is generated on the vertical part of the outer circumference.
Disclosure of Invention
The utility model aims to solve the problem that in the prior art, the outer circumferential surface of a diaphragm is planar and easy to loosen, so that air leakage is caused at the outer circle of a film forming plate, and provides a high-service-life two-way valve diaphragm structure, wherein the center of the diaphragm can deform along with pressure difference, so that a two-way valve is opened and closed, the structure is simple, and the requirements of various valve structures can be met.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
the utility model provides a high life type two-way valve diaphragm structure, includes diaphragm and the valve body of arranging with the diaphragm is coaxial, the center of diaphragm is equipped with the elastic structure that can warp, be equipped with the cavity that is used for placing the diaphragm in the valve body, the center department of valve body is equipped with the passageway, be equipped with annular bulge on the outer periphery of diaphragm, be equipped with the annular groove with annular bulge adaptation on the valve body. The cavity in the valve body coaxial with the diaphragm is used for placing the diaphragm, the elastic structure bulges out in one side of the diaphragm, the elastic structure is recessed in the other side of the diaphragm, the elastic structure can deform along with the pressure difference, so that a channel is opened or blocked, the two-way valve is opened and closed, the annular bulge on the outer circumferential surface of the two sides of the diaphragm is matched with the annular groove on the valve body, the sealing effect is achieved, the fixed supporting effect is achieved, the service life of the diaphragm is greatly prolonged, the structure is simple, interference fit with the lower end of a piston rod is not needed, and the two-way valve can be opened and closed through the elastic structure which can deform along with the pressure difference in the center of the diaphragm, so that the requirements of various valve structures can be met.
Preferably, the elastic structure includes a flat section and a curved section, the curved section connecting the flat section and the annular protrusion. The elastic structure consists of a plane section and a bending section, and the bending section drives the plane section to bulge towards two sides of the diaphragm.
Preferably, the valve body comprises a first valve body and a second valve body, a first avoidance groove is formed in the first valve body, and a second avoidance groove is formed in the second valve body. A cavity is formed between the first valve body and the second valve body, the cross section at the center of the first avoidance groove is an inclined plane, the second avoidance groove is an annular groove, and when the bending section bends towards one side of the first valve body, the first avoidance groove is used for avoiding the bending section; when the bending section is bent to one side of the second valve body, the second avoidance groove is used for avoiding the bending section, and the first avoidance groove and the second avoidance groove can also play a role in limiting and sealing.
Preferably, the channel comprises a first channel and a second channel, the first channel is arranged on the first valve body, the second channel is arranged on the second valve body, and a gap is arranged between the first channel and the second channel. A volcanic vent is formed at the second channel, when the first channel is positive in pressure, the bending section bends towards one side of the first valve body, the plane section bulges towards one side of the first valve body, the second channel is opened, and the two-way valve is in an opened state; when the first channel is vacuumized, the bending section bends towards one side of the second valve body, the plane section bulges towards one side of the second valve body, the plane section presses a volcanic vent at the second channel, and the two-way valve is in a closed state.
Preferably, the annular groove comprises a first annular groove and a second annular groove, the first annular groove is arranged on the first valve body, the second annular groove is arranged on the second valve body, the annular protrusions comprise a first annular protrusion and a second annular protrusion which are respectively arranged on two sides of the diaphragm, the first annular protrusion is in butt joint with the first annular groove, and the second annular protrusion is in butt joint with the second annular groove. The first annular bulge is in butt fit with the first annular groove, and the second annular bulge is in butt fit with the second annular groove, so that the function of supporting and fixing the diaphragm can be achieved, and the sealing function can be achieved.
Preferably, when the two-way valve is in the closed state, the first passage is pressurized, the curved section abuts against the inner wall of the first avoidance groove, and the flat section abuts against the second passage.
Preferably, when the two-way valve is in an open state, the first channel is evacuated, the curved section covers the edge of the second avoidance groove, and the planar section is separated from the second channel.
The utility model has the following beneficial effects: (1) The two-way valve can be opened and closed through an elastic structure which can deform along with pressure difference at the center of the diaphragm without interference fit with the lower end of the piston rod, and the requirements of various valve structures can be met; (2) The annular protrusions on the outer circumferential surfaces of the two sides of the diaphragm are matched with the annular grooves on the valve body, so that the sealing effect and the fixing and supporting effects are achieved, and the service life of the diaphragm is greatly prolonged.
Drawings
The utility model is further illustrated by the following figures and examples.
FIG. 1 is a schematic diagram of the structure of a diaphragm in the present utility model;
FIG. 2 is a schematic view of the two-way valve of the present utility model in a closed configuration;
fig. 3 is a schematic view of the structure of the two-way valve of the present utility model in an open state.
In the figure: diaphragm 1, valve body 2, first valve body 2.1, second valve body 2.2, elastic structure 3, planar segment 3.1, bending segment 3.2, passageway 4, first passageway 4.1, second passageway 4.2, annular bulge 5, first annular bulge 5.1, second annular bulge 5.2, annular recess 6, first annular recess 6.1, second annular recess 6.2, first dodge groove 7, second dodge groove 8.
Detailed Description
First embodiment:
as shown in fig. 1, 2 or 3, a diaphragm structure of a two-way valve with long service life comprises a diaphragm 1 and a valve body 2 coaxially arranged with the diaphragm 1, wherein the center of the diaphragm 1 is provided with a deformable elastic structure 3, a cavity for placing the diaphragm 1 is arranged in the valve body 2, a channel 4 is arranged at the center of the valve body 2, an annular bulge 5 is arranged on the outer circumferential surface of the diaphragm 1, and an annular groove 6 matched with the annular bulge 5 is arranged on the valve body 2. The elastic structure 3 comprises a planar section 3.1 and a curved section 3.2, the curved section 3.2 connecting the planar section 3.1 and the annular protrusion 5. The channel 4 comprises a first channel 4.1 and a second channel 4.2, the first channel 4.1 is arranged on the first valve body 2.1, the second channel 4.2 is arranged on the second valve body 2.2, and a gap is arranged between the first channel 4.1 and the second channel 4.2.
In the above technical scheme, the cavity in the valve body 2 coaxially arranged with the diaphragm 1 is used for placing the diaphragm 1, the elastic structure 3 bulges out on one side of the diaphragm 1, the elastic structure 3 is recessed on the other side of the diaphragm 1, the elastic structure 3 can deform along with pressure difference, so that the channel 4 is opened or blocked, the two-way valve is opened or closed, the annular bulge 5 on the outer circumferential surfaces of the two sides of the diaphragm 1 is matched with the annular groove 6 on the valve body 2, the sealing effect and the fixed supporting effect are achieved, the service life of the diaphragm 1 is greatly prolonged, the structure is simple, interference fit is not needed with the lower end of a piston rod, the two-way valve can be opened or closed through the elastic structure 3 in the center of the diaphragm 1, and the requirements of various valve structures can be met. The elastic structure 3 is composed of a plane section 3.1 and a bending section 3.2, and the bending section 3.2 drives the plane section 3.1 to bulge towards two sides of the diaphragm 1. A volcanic vent is formed at the second channel 4.2, when the first channel 4.1 is positive in pressure, the bending section 3.2 bends towards the first valve body 2.1, the plane section 3.1 bulges towards the first valve body 2.1, the second channel 4.2 is opened, and the two-way valve is in an open state; when the first channel 4.1 is vacuumized, the bending section 3.2 is bent towards the side of the second valve body 2.2, the plane section 3.1 is protruded towards the side of the second valve body 2.2, and the plane section 3.1 presses a volcanic vent at the position of the second channel 4.2, so that the two-way valve is in a closed state.
Specific embodiment II:
as shown in fig. 3, on the basis of the first embodiment, the valve body 2 includes a first valve body 2.1 and a second valve body 2.2, a first avoidance groove 7 is provided on the first valve body 2.1, and a second avoidance groove 8 is provided on the second valve body. The annular groove 6 comprises a first annular groove 6.1 and a second annular groove 6.2, the first annular groove 6.1 is arranged on the first valve body 2.1, the second annular groove 6.2 is arranged on the second valve body 2.2, the annular protrusion 5 comprises a first annular protrusion 5.1 and a second annular protrusion 5.2 which are respectively arranged on two sides of the diaphragm 1, the first annular protrusion 5.1 is abutted with the first annular groove 6.1, and the second annular protrusion 5.2 is abutted with the second annular groove 6.2.
In the above technical scheme, a cavity is formed between the first valve body 2.1 and the second valve body 2.2, the cross section at the center of the first avoiding groove 7 is an inclined plane, the second avoiding groove 8 is an annular groove, and when the bending section 3.2 is bent to one side of the first valve body 2.1, the first avoiding groove 7 is used for avoiding the bending section 3.2; when the bending section 3.2 is bent to one side of the second valve body 2.2, the second avoidance groove 8 is used for avoiding the bending section 3.2, and the first avoidance groove 7 and the second avoidance groove 8 can also play a role in limiting and sealing. The first annular bulge 5.1 is in butt fit with the first annular groove 6.1, and the second annular bulge 5.2 is in butt fit with the second annular groove 6.2, so that the function of supporting and fixing the diaphragm can be achieved, and the sealing function can be achieved.
Working principle: as shown in fig. 2 or fig. 3, the first channel 4.1 is pressurized, the curved section 3.2 is abutted against the inner wall of the first avoiding groove 7, the plane section 3.1 is abutted against the second channel 4.2, and the diaphragm 1 presses the volcanic vent of the second valve body 2.2, so that the two-way valve is in a closed state; the first channel 4.1 is vacuumized, the diaphragm 1 is sucked up, the bending section 3.2 covers the groove edge of the second avoidance groove 8, the plane section 3.1 is separated from the second channel 4.2, the volcanic vent of the second valve body 2.2 is opened, and the two-way valve is in an open state.
The utility model has the following beneficial effects: the two-way valve can be opened and closed through an elastic structure which can deform along with pressure difference at the center of the diaphragm without interference fit with the lower end of the piston rod, and the requirements of various valve structures can be met; the annular protrusions on the outer circumferential surfaces of the two sides of the diaphragm are matched with the annular grooves on the valve body, so that the sealing effect and the fixing and supporting effects are achieved, and the service life of the diaphragm is greatly prolonged.
Claims (7)
1. The utility model provides a high life type two-way valve diaphragm structure, includes diaphragm (1) and valve body (2) coaxial arrangement with diaphragm (1), its characterized in that, the center of diaphragm (1) is equipped with elastic structure (3) that can warp, be equipped with in valve body (2) and be used for placing the cavity of diaphragm (1), the center department of valve body (2) is equipped with passageway (4), be equipped with annular bulge (5) on the outer periphery of diaphragm (1), be equipped with on valve body (2) with annular groove (6) of annular bulge (5) adaptation.
2. A high lifetime two-way valve membrane structure in accordance with claim 1, characterized in that the elastic structure (3) comprises a planar section (3.1) and a curved section (3.2), the curved section (3.2) connecting the planar section (3.1) and the annular protrusion (5).
3. The high-life two-way valve diaphragm structure according to claim 2, wherein the valve body (2) comprises a first valve body (2.1) and a second valve body (2.2), a first avoidance groove (7) is formed in the first valve body (2.1), and a second avoidance groove (8) is formed in the second valve body.
4. A two-way valve diaphragm structure of the high lifetime type according to claim 3, characterized in that said channel (4) comprises a first channel (4.1) and a second channel (4.2), said first channel (4.1) being arranged on a first valve body (2.1), said second channel (4.2) being arranged on a second valve body (2.2), a gap being provided between said first channel (4.1) and said second channel (4.2).
5. The high-life two-way valve diaphragm structure according to claim 3 or 4, wherein the annular groove (6) comprises a first annular groove (6.1) and a second annular groove (6.2), the first annular groove (6.1) is arranged on the first valve body (2.1), the second annular groove (6.2) is arranged on the second valve body (2.2), the annular protrusion (5) comprises a first annular protrusion (5.1) and a second annular protrusion (5.2) which are respectively arranged on two sides of the diaphragm (1), the first annular protrusion (5.1) is abutted with the first annular groove (6.1), and the second annular protrusion (5.2) is abutted with the second annular groove (6.2).
6. The diaphragm structure of a two-way valve with a long service life according to claim 4, wherein when the two-way valve is in a closed state, the first channel (4.1) is pressurized, the curved section (3.2) is abutted against the inner wall of the first avoidance groove (7), and the planar section (3.1) is abutted against the second channel (4.2).
7. A high lifetime two-way valve membrane structure in accordance with claim 4, characterized in that when the two-way valve is in an open state, the first channel (4.1) is evacuated and the curved section (3.2) covers the edge of the second avoidance groove (8), the planar section (3.1) being separated from the second channel (4.2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320370762.5U CN219673368U (en) | 2023-02-22 | 2023-02-22 | High life type two-way valve diaphragm structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320370762.5U CN219673368U (en) | 2023-02-22 | 2023-02-22 | High life type two-way valve diaphragm structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219673368U true CN219673368U (en) | 2023-09-12 |
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ID=87924052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320370762.5U Active CN219673368U (en) | 2023-02-22 | 2023-02-22 | High life type two-way valve diaphragm structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219673368U (en) |
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2023
- 2023-02-22 CN CN202320370762.5U patent/CN219673368U/en active Active
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