CN220060617U - Composite diaphragm and diaphragm valve thereof - Google Patents
Composite diaphragm and diaphragm valve thereof Download PDFInfo
- Publication number
- CN220060617U CN220060617U CN202321372310.7U CN202321372310U CN220060617U CN 220060617 U CN220060617 U CN 220060617U CN 202321372310 U CN202321372310 U CN 202321372310U CN 220060617 U CN220060617 U CN 220060617U
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- CN
- China
- Prior art keywords
- valve
- diaphragm
- composite
- composite membrane
- clack
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000002131 composite material Substances 0.000 title claims abstract description 53
- 239000012528 membrane Substances 0.000 claims abstract description 26
- 239000010410 layer Substances 0.000 claims abstract description 16
- 239000004033 plastic Substances 0.000 claims abstract description 9
- 229920003023 plastic Polymers 0.000 claims abstract description 9
- 239000011247 coating layer Substances 0.000 claims abstract description 8
- 229920001971 elastomer Polymers 0.000 claims abstract description 7
- 238000012423 maintenance Methods 0.000 claims abstract description 7
- 239000011248 coating agent Substances 0.000 claims abstract description 4
- 238000000576 coating method Methods 0.000 claims abstract description 4
- 230000008093 supporting effect Effects 0.000 claims description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000012530 fluid Substances 0.000 description 7
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 7
- 239000004810 polytetrafluoroethylene Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 4
- 230000003014 reinforcing effect Effects 0.000 description 4
- 239000004698 Polyethylene Substances 0.000 description 2
- -1 Polytetrafluoroethylene Polymers 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229920002943 EPDM rubber Polymers 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 229920012266 Poly(ether sulfone) PES Polymers 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Landscapes
- Fluid-Driven Valves (AREA)
Abstract
The utility model discloses a composite diaphragm and a diaphragm valve thereof. The composite membrane comprises a rubber layer and a plastic layer, wherein the composite membrane is formed by combining the rubber layer and the plastic layer; the composite membrane has an arcuate overall shape for use in situations where back pressure is present to reduce maintenance costs. A diaphragm valve comprises a composite diaphragm, a valve body, a diaphragm valve and a diaphragm valve, wherein a flow channel is arranged in the valve body; the valve clack is arranged in the flow channel and used for controlling the opening and closing of the flow channel; the coating layer is arranged outside the valve clack and used for coating the valve clack; the piston is connected with the valve clack; wherein the piston is driven by an external actuator. The utility model has the following beneficial effects: the composite diaphragm and the diaphragm valve thereof can be applied to occasions with back pressure, and the maintenance cost is reduced.
Description
Technical Field
The utility model relates to a composite diaphragm and a diaphragm valve thereof.
Background
The diaphragm is a film material for separating or filtering fluid and gas, and is widely applied to the industries of chemical industry, medicine, food and the like. The existing diaphragm materials are mainly made of plastic materials such as Polytetrafluoroethylene (PTFE), polyether sulfone (PES), polyethylene (PE) and nylon. The materials have the advantages of high chemical stability, good high temperature resistance, strong corrosion resistance and the like, but have poor sealing property and mechanical strength.
In the prior art, in order to improve the mechanical strength of the diaphragm, a reinforcing rib method is often adopted. The reinforcing rib is a rib structure which is added in the plane of the diaphragm, and plays roles of enhancing the rigidity of the diaphragm and improving the rupture strength. Common forms of reinforcing ribs are bellows type, resin reinforced, wire mesh reinforced, and the like. The corrugated pipe type reinforcing ribs are inserted into the diaphragm by adopting corrugated pipes, so that the mechanical strength of the diaphragm can be effectively improved.
The diaphragm made of PTFE is often a bellows diaphragm, but the bellows diaphragm cannot be used in a case where there is back pressure. When the diaphragm is applied to the occasion with back pressure, the diaphragm is extremely easy to damage, and needs to be frequently maintained, and the maintenance cost is high
Disclosure of Invention
The utility model aims to provide a composite diaphragm and a diaphragm valve thereof. The composite diaphragm and the diaphragm valve thereof can be applied to occasions with back pressure, and the maintenance cost is reduced.
The technical aim of the utility model is realized by the following technical scheme:
the composite membrane comprises a rubber layer and a plastic layer, wherein the composite membrane is formed by combining the rubber layer and the plastic layer; the composite membrane has an arcuate overall shape for use in situations where back pressure is present to reduce maintenance costs.
A diaphragm valve comprises a composite diaphragm, a valve body, a diaphragm valve and a diaphragm valve, wherein a flow channel is arranged in the valve body; the valve clack is arranged in the flow channel and used for controlling the opening and closing of the flow channel; the coating layer is arranged outside the valve clack and used for coating the valve clack; the piston is connected with the valve clack; wherein the piston is driven by an external actuator.
The utility model is further provided with: the coating layer is provided with an installation groove; the mounting groove is internally provided with a composite membrane in a matching way.
The utility model is further provided with: the valve clack is provided with a pressing plate for pressing the composite membrane; the pressing plate is fixed on the valve clack through the nut, so that the composite diaphragm is better installed.
The utility model is further provided with: the diaphragm valve is provided with a valve cover, and the bottom of the valve cover is matched with the shape of the composite diaphragm; when the valve is in an open state, the composite diaphragm is matched and abutted with the diaphragm valve and used for supporting the composite diaphragm.
In summary, the utility model has the following beneficial effects: the composite diaphragm and the diaphragm valve thereof can be applied to occasions with back pressure, and the maintenance cost is reduced.
Drawings
FIG. 1 is a schematic diagram of an embodiment;
FIG. 2 is a schematic diagram of the connection relationship between a valve flap and a composite membrane in an embodiment;
FIG. 3 is an exploded view of FIG. 2;
FIG. 4 is a schematic illustration of the valve flap in a closed state;
fig. 5 is a schematic view of the valve flap in an open state.
Reference numerals: 1. a valve body; 2. a flow passage; 3. a valve flap; 4. a coating layer; 5. a piston; 6. a mounting groove; 7. a composite membrane; 8. a rubber layer; 9. a plastic layer; 10. a valve cover; 11. a pressing plate; 12. and (3) a nut.
Detailed Description
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "page", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature.
In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise. In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
The present utility model will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1-3, a diaphragm valve includes a valve body 1. A flow passage 2 through which fluid can pass is provided in the valve body 1. A valve clack 3 is arranged in the flow channel 2 and is used for controlling the opening and closing of the flow channel 2. The valve clack 3 is provided with a PTFE coating layer 4 for coating the valve clack 3.
The valve clack 3 is connected with a piston 5. The piston 5 is driven by an external actuator. The valve flap 3 is used to close the flow path 2 or open the flow path 2, thereby controlling the opening and closing of the fluid. Wherein, the PTFE coating layer 4 outside the valve clack 3 is provided with a mounting groove 6. The mounting groove 6 is internally provided with a composite membrane 7 in a matching way. The composite membrane 7 is made of an EPDM rubber layer 8 and a PTFE plastic layer 9, and has an arcuate overall shape. Correspondingly, the valve clack 3 is provided with a pressing plate 11 for pressing the composite membrane 7, so that the composite membrane 7 is better installed, and the pressing plate 11 is fixed on the valve clack 3 through a nut 12.
Wherein the diaphragm valve is provided with a valve cap 10. The bottom shape of the valve cover 10 is matched with the arched composite membrane 7. When the valve is in an open state, the composite diaphragm 7 is matched and abutted with the diaphragm valve for supporting, so that the composite diaphragm 7 is prevented from being damaged due to overlarge deformation of the composite diaphragm 7, and the service life of the composite diaphragm 7 is prolonged.
The utility model is mainly applied to occasions with back pressure, wherein the definition of the back pressure is as follows: back pressure refers to the back pressure applied to a preceding line by a subsequent line or device of fluid during the flow of the fluid. When fluid flows through valves, filters, meters, etc., these devices create some resistance to fluid flow, resulting in a pressure drop. Therefore, in the case of back pressure, the conventional bellows-shaped diaphragm cannot withstand a large back pressure and is easily damaged.
Above-mentioned, the one end of the fixed composite diaphragm 7 of mounting groove 6 that cooperation valve clack 3, clamp plate 11 and mutual formation just is in comparatively stable fixed state, and the other end and valve gap 10 interconnect make the support between composite diaphragm 7 and the valve gap 10 on valve gap 10 of the adaptation butt of composite diaphragm 7 when the pressurized, reach and prevent the impaired condition of composite diaphragm 7 under the backpressure state, extension composite diaphragm 7's life.
The working flow of the utility model is as follows:
as shown in fig. 4, when the valve is in the closed state, the flow channel 2 is closed by the valve flap 3, the a-face of the valve flap 3 is a pressed face, and the composite membrane 7 is in a state of no pressure.
As shown in fig. 5, when the valve is in an open state, the B surface of the composite membrane 7 is a pressed surface, and the back side C surface is abutted against the valve cover 10 to obtain a supporting effect, so that the service life of the composite membrane 7 is prolonged.
The combined structure of the composite membrane 7 and the PTFE coated valve clack 3 solves the problem of back pressure tolerance. In summary, the utility model provides the composite diaphragm 7 and the diaphragm valve which have simple structures, are convenient to maintain, can bear the back pressure of 10bar, and meet the requirements of sanitation.
The present embodiment is only for explanation of the present utility model and is not to be construed as limiting the present utility model, and modifications to the present embodiment, which may not creatively contribute to the present utility model as required by those skilled in the art after reading the present specification, are all protected by patent laws within the scope of claims of the present utility model.
Claims (5)
1. The composite membrane is characterized by comprising a rubber layer (8) and a plastic layer (9), wherein the composite membrane (7) is formed by combining the rubber layer (8) and the plastic layer (9); the composite membrane (7) is arched in overall shape for use in situations with back pressure to reduce maintenance costs.
2. A diaphragm valve, characterized by comprising a composite membrane (7) according to claim 1, and further comprising a valve body (1), wherein a flow passage (2) is arranged in the valve body (1); the valve clack (3) is arranged in the flow channel (2) and used for controlling the opening and closing of the flow channel (2); the coating layer (4) is arranged outside the valve clack (3) and used for coating the valve clack (3); a piston (5), wherein the piston (5) is connected with the valve clack (3); wherein the piston (5) is driven by an external actuator.
3. The diaphragm valve according to claim 2, wherein the coating layer (4) is provided with a mounting groove (6); the composite membrane (7) of claim 1 is matched and arranged in the mounting groove (6).
4. A diaphragm valve according to claim 3, characterized in that the valve flap (3) is provided with a pressure plate (11) for pressing the composite membrane (7); the pressing plate (11) is fixed on the valve clack (3) through a nut (12), so that the composite membrane (7) is installed.
5. The diaphragm valve according to claim 4, wherein a valve cover (10) is arranged on the diaphragm valve, and the bottom of the valve cover (10) is matched with the shape of the composite diaphragm (7); when the diaphragm valve is in an open state, the composite diaphragm (7) is matched and abutted with the diaphragm valve and used for supporting the composite diaphragm (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321372310.7U CN220060617U (en) | 2023-05-31 | 2023-05-31 | Composite diaphragm and diaphragm valve thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321372310.7U CN220060617U (en) | 2023-05-31 | 2023-05-31 | Composite diaphragm and diaphragm valve thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220060617U true CN220060617U (en) | 2023-11-21 |
Family
ID=88762875
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321372310.7U Active CN220060617U (en) | 2023-05-31 | 2023-05-31 | Composite diaphragm and diaphragm valve thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220060617U (en) |
-
2023
- 2023-05-31 CN CN202321372310.7U patent/CN220060617U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |