CN201531644U - Pneumatic diaphragm valve - Google Patents
Pneumatic diaphragm valve Download PDFInfo
- Publication number
- CN201531644U CN201531644U CN200920199262XU CN200920199262U CN201531644U CN 201531644 U CN201531644 U CN 201531644U CN 200920199262X U CN200920199262X U CN 200920199262XU CN 200920199262 U CN200920199262 U CN 200920199262U CN 201531644 U CN201531644 U CN 201531644U
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- CN
- China
- Prior art keywords
- valve
- diaphragm
- cylinder head
- pneumatic
- piston rod
- Prior art date
- 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.)
- Expired - Fee Related
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- Fluid-Driven Valves (AREA)
Abstract
A pneumatic diaphragm valve comprises a valve component and a pneumatic execution component, wherein the valve component is composed of a valve body, a diaphragm plate, a pressure-bearing sleeve and a valve cover, the diaphragm plate is fixedly connected with the pressure-bearing sleeve, the pneumatic execution component is composed of a cylinder, a cylinder cover, a spring, a piston and a piston rod, the piston rod penetrates out of the cylinder cover to connect with the pressure-bearing sleeve in a driving way, and a connecting flange is arranged on the valve cover to connect with the cylinder cover. The pneumatic diaphragm valve has the beneficial effects that a spacer flange is omitted since the connecting flange on the valve cover is connected with the cylinder cover, the structure is simple, and the cost is low.
Description
Technical field
The utility model relates to a kind of valve, relates in particular to a kind of pneumatic diaphragm valve.
Background technique
As everyone knows, pneumatic diaphragm valve generally is made up of valve part and pneumatic power unit, and valve part comprises valve body, diaphragm, pressure-bearing cover, valve gap, and diaphragm is fixedlyed connected with the pressure-bearing cover; Pneumatic power unit comprises cylinder, cylinder head, spring, piston, piston rod, piston rod stretches out cylinder head and the pressure-bearing cover is in transmission connection, the valve part of prior art is connected cylinder head and valve gap with pneumatic power unit by spacer flanger, has complex structure, shortcoming that cost is high.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of simple in structure, a kind of pneumatic diaphragm valve that cost is low is provided.
The utility model solves the problems of the technologies described above the technological scheme that is adopted: a kind of pneumatic diaphragm valve, comprise valve part and pneumatic power unit, valve part comprises valve body, diaphragm, pressure-bearing cover, valve gap, diaphragm is fixedlyed connected with the pressure-bearing cover, pneumatic power unit comprises cylinder, cylinder head, spring, piston, piston rod, piston rod stretches out cylinder head and the pressure-bearing cover is in transmission connection, and valve gap is provided with adpting flange and directly is connected with cylinder head.
The beneficial effects of the utility model:, saved spacer flanger, thereby had advantage simple in structure, that cost is low because valve gap is provided with adpting flange and directly is connected with cylinder head.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is further described:
As shown in Figure 1, a kind of pneumatic diaphragm valve, comprise valve part and pneumatic power unit, valve part comprises valve body 1, diaphragm 2, pressure-bearing cover 3, valve gap 4, diaphragm 2 overlaps 3 with pressure-bearing fixedlys connected, pneumatic power unit comprises cylinder 5, cylinder head 6, spring 7, piston 8, piston rod 9, and piston rod 9 stretches out cylinder head 6 and is in transmission connection with pressure-bearing cover 3, and the adpting flange 10 that valve gap 4 is provided with one directly is connected with cylinder head 6.The sealing surface of diaphragm 2 is made up of static seal 11 and motive sealing 12 two-part, the shoulder that is provided with a projection around the cylindrical of diaphragm 2 cooperates with the platform hole of valve body 1, constitute static seal 11, motive sealing 12 is made as the boss of a less seal f ace width, realizes the motive sealing reliability under the less pressure easily.The sealing surface of diaphragm 2 is provided with PTFE anti-wear layer 13, has improved sealing load and wear resistance.Cylinder 5, cylinder head 6 and piston 8 are made of plastics, and present embodiment is an acetal plastic, not only can satisfy the requirement of intensity, and have advantage in light weight, that cost is low.In addition, the friction factor between piston 8 and the cylinder 5 is little, and it is big to have ouput force, the characteristics of long service life.The endoporus of the piston rod guide portion 14 of cylinder head 6 is provided with copper sheathing 15 and 9 movable cooperations of piston rod, and copper sheathing 15 has promptly reduced the frictional force of cylinder head 6 with piston rod 9, has avoided the wearing and tearing of cylinder head 6 again.The periphery of the piston rod guide portion 14 of cylinder head 6 is provided with stiffening rib 16, has increased the intensity of cylinder head 6, has also saved material simultaneously.
Claims (6)
1. pneumatic diaphragm valve, comprise valve part and pneumatic power unit, valve part comprises valve body, diaphragm, pressure-bearing cover, valve gap, diaphragm is fixedlyed connected with the pressure-bearing cover, pneumatic power unit comprises cylinder, cylinder head, spring, piston, piston rod, piston rod stretches out cylinder head and the pressure-bearing cover is in transmission connection, and it is characterized in that: valve gap is provided with adpting flange and directly is connected with cylinder head.
2. a kind of pneumatic diaphragm valve according to claim 1, it is characterized in that: the sealing surface of diaphragm is made up of static seal and motive sealing two-part, the shoulder that is provided with a projection around the cylindrical of diaphragm cooperates with the platform hole of valve body, constitute static seal, motive sealing is made as the boss of a less seal f ace width.
3. a kind of pneumatic diaphragm valve according to claim 1 and 2 is characterized in that: the sealing surface of diaphragm is provided with the PTFE anti-wear layer.
4. a kind of pneumatic diaphragm valve according to claim 1 is characterized in that: cylinder, cylinder head and piston are made of plastics.
5. a kind of pneumatic diaphragm valve according to claim 1 is characterized in that: the endoporus of the piston rod guide portion of cylinder head is provided with copper sheathing and cooperates with piston rod is movable.
6. require 1 described a kind of pneumatic diaphragm valve according to authority, it is characterized in that: the periphery of the piston rod guide portion of cylinder head is provided with stiffening rib.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920199262XU CN201531644U (en) | 2009-10-31 | 2009-10-31 | Pneumatic diaphragm valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920199262XU CN201531644U (en) | 2009-10-31 | 2009-10-31 | Pneumatic diaphragm valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201531644U true CN201531644U (en) | 2010-07-21 |
Family
ID=42527048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920199262XU Expired - Fee Related CN201531644U (en) | 2009-10-31 | 2009-10-31 | Pneumatic diaphragm valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201531644U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108488428A (en) * | 2018-05-21 | 2018-09-04 | 江苏金晟元特种阀门股份有限公司 | Fluoroplastic all-liner cuts off diaphragm valve |
| CN108662191A (en) * | 2017-03-30 | 2018-10-16 | 苏州巴恩斯通环保科技有限公司 | A kind of diaphragm valve |
-
2009
- 2009-10-31 CN CN200920199262XU patent/CN201531644U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108662191A (en) * | 2017-03-30 | 2018-10-16 | 苏州巴恩斯通环保科技有限公司 | A kind of diaphragm valve |
| CN108488428A (en) * | 2018-05-21 | 2018-09-04 | 江苏金晟元特种阀门股份有限公司 | Fluoroplastic all-liner cuts off diaphragm valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Wenzhou Jinxin Valve Co., Ltd. Assignor: Wenzhou Kangsaite Automatic Control Valve Co., Ltd. Contract record no.: 2010990000682 Denomination of utility model: Pneumatic diaphragm valve Granted publication date: 20100721 License type: Exclusive License Record date: 20100830 |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100721 Termination date: 20101031 |