CN202852056U - All-plastic diaphragm valve - Google Patents
All-plastic diaphragm valve Download PDFInfo
- Publication number
- CN202852056U CN202852056U CN 201220511116 CN201220511116U CN202852056U CN 202852056 U CN202852056 U CN 202852056U CN 201220511116 CN201220511116 CN 201220511116 CN 201220511116 U CN201220511116 U CN 201220511116U CN 202852056 U CN202852056 U CN 202852056U
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- CN
- China
- Prior art keywords
- valve
- diaphragm
- valve rod
- rubber pad
- gap
- 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 - Lifetime
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Abstract
An all-plastic diaphragm valve mainly solves the problems that an existing diaphragm valve is poor in sealing performance and a diaphragm is short in service life. The all-plastic diaphragm valve is characterized in that a nylon valve clack (8) is arranged on the lower portion of a valve rod (3), a fluororubber blanket diaphragm (9) is arranged on the lower portion of the valve clack (8), and a fluoro-ethylene polymer diaphragm (10) is arranged on the lower portion of the fluororubber blanket diaphragm (9); and the outer sides of the fluororubber blanket diaphragm (9) and the fluoro-ethylene polymer diaphragm (10) are encircled between a valve body (1) and a valve cover (2), and the fluororubber blanket diaphragm (9), the fluoro-ethylene polymer diaphragm (10), the valve body (1) and the valve cover (2) are fixedly connected through connecting pieces (4). The all-plastic diaphragm valve is good in sealing performance and capable of enabling pressure of media in a lower-pressure cavity on the back of the valve to keep stable and not to fluctuate.
Description
Technical field
The utility model relates to a kind of valve, is specifically related to a kind of overall plastic membrane valve.
Background technique
The structural type of membrane valve differs widely with general valve, being a kind of novel valve, is a kind of block valve of special shape, and its open-shut device is a barrier film made from soft material, body cavity and valve gap inner chamber and driver part are separated, now be widely used in every field.
Membrane valve is that a flexible diaphragm or composite membrane are housed in valve body and valve gap, and its closure member is a kind of compression set that is connected with barrier film.Valve seat can be weir shape, also can be the tube wall of straight-through runner.The advantage of membrane valve is that its operating mechanism and medium channel separate, and has not only guaranteed the pure of working medium, also prevents the possibility of pipeline medium impulse maneuver mechanism workpiece simultaneously.In addition, the valve rod place does not need to adopt any type of independent sealing, unless use as safety installations in the control hazardous medium.In the membrane valve, because the working medium contact only is barrier film and valve body, the two all can adopt multiple different material, so this valve can be controlled multiple working medium, especially suitable medium with chemical corrosivity or suspended particulate ideally.The operating temperature of membrane valve is subjected to the restriction of barrier film and valve body material that lining uses usually, and its operating temperature range is approximately-50～175 ℃.Diaphragm valve structure is simple, only is made of valve body, barrier film and three critical pieces of valve gap assembly parts.This valve is easy to quick-detachment and maintenance, and the replacing barrier film can reach in the short time at the scene to be finished.
But existing membrane valve diaphragm apparatus design is unreasonable, causes the fatigue strength of diaphragm easily impaired.After using a period of time, diaphragm lost efficacy, and occur leaking, and the membrane valve sealability was relatively poor.
The model utility content
In order to overcome the deficiency of background technique, the utility model provides a kind of overall plastic membrane valve, has mainly solved existing membrane valve poor sealing performance and shorter problem of diaphragm life-span, has prolonged lining disphragm valve working life and has improved the sealability of valve.
The technological scheme that the utility model adopts is: a kind of overall plastic membrane valve, comprise valve body, valve gap, valve rod, link, valve body and valve gap are connected and fixed by link, the valve rod outside is provided with the valve rod lifting nut, valve gap and valve rod lifting nut bottom are connected and fixed, the outside cover on valve rod lifting nut top has handwheel, valve rod top is provided with position-limiting cover, stem lower portion is provided with the nylon flap, nylon flap bottom is provided with fluorine rubber pad diaphragm, fluorine rubber pad diaphragm bottom is provided with the perfluoroethylene-propylene diaphragm, the outside circle of fluorine rubber pad diaphragm and perfluoroethylene-propylene diaphragm is between valve body and valve gap, and fluorine rubber pad diaphragm, the perfluoroethylene-propylene diaphragm, valve body, valve gap is connected and fixed by link.
The place, lower end surface that the valve rod lifting nut cooperates with valve gap is provided with two thrust ball bearings.
The beneficial effects of the utility model are: owing to taking technique scheme, effectively prolonged lining disphragm valve working life and improved the sealability of valve, and so that the keying speed of valve be improved.
Description of drawings
Fig. 1 is structural representation of the present utility model.
1-valve body among the figure, 2-valve gap, 3-valve rod, 4-link, 5-valve rod lifting nut, 6-handwheel, 7-position-limiting cover, 8-nylon flap, 9-fluorine rubber pad diaphragm, 10-perfluoroethylene-propylene diaphragm, 11-thrust ball bearing.
Embodiment
Below in conjunction with accompanying drawing the utility model embodiment is described further:
As shown in Figure 1, a kind of overall plastic membrane valve, comprise valve body 1, valve gap 2, valve rod 3, link 4, valve body 1 is connected and fixed by link 4 with valve gap 2, valve rod 3 outsides are provided with valve rod lifting nut 5, valve gap 2 is connected and fixed with valve rod lifting nut 5 bottoms, the outside cover on valve rod lifting nut 5 tops has handwheel 6, valve rod 3 tops are provided with position-limiting cover 7, valve rod 1 bottom is provided with nylon flap 8, nylon flap 8 bottoms are provided with fluorine rubber pad diaphragm 9, fluorine rubber pad diaphragm 9 bottoms are provided with perfluoroethylene-propylene diaphragm 10, the outside circle of fluorine rubber pad diaphragm 9 and perfluoroethylene-propylene diaphragm 10 is between valve body 1 and valve gap 2, and fluorine rubber pad diaphragm 9, perfluoroethylene-propylene diaphragm 10, valve body 1, valve gap 2 four is connected and fixed by link 4; Perfluoroethylene-propylene diaphragm 10 is selected preferably fluoroplastic FEP(perfluoroethylene-propylene of fatigue resistance) material, the pad film adopts the novel type fluorubber FKM material that forever withstand voltage, aberration rate is low, thereby prevented that the valve body that produces because of clamp load torque from leaking, perfluoroethylene-propylene diaphragm 10 is combined into Sealing with fluorine rubber pad diaphragm 9 and nylon material flap 8, this novel combination structure obtains fine improvement to diaphragm machinery usability, has prolonged lining disphragm valve working life and has improved the sealability of valve.
The place, lower end surface that valve rod lifting nut 5 cooperates with valve gap 2 is provided with two thrust ball bearings 11, by this structural design, has significantly alleviated the operated by handwheel moment of torsion, and keying speed is improved.
Claims (2)
1. overall plastic membrane valve, comprise valve body (1), valve gap (2), valve rod (3), link (4), valve body (1) is connected and fixed by link (4) with valve gap (2), valve rod (3) outside is provided with valve rod lifting nut (5), valve gap (2) is connected and fixed with valve rod lifting nut (5) bottom, the outside cover on valve rod lifting nut (5) top has handwheel (6), valve rod (3) top is provided with position-limiting cover (7), it is characterized in that: valve rod (1) bottom is provided with nylon flap (8), nylon flap (8) bottom is provided with fluorine rubber pad diaphragm (9), fluorine rubber pad diaphragm (9) bottom is provided with perfluoroethylene-propylene diaphragm (10), the outside circle of fluorine rubber pad diaphragm (9) and perfluoroethylene-propylene diaphragm (10) is between valve body (1) and valve gap (2), and fluorine rubber pad diaphragm (9), perfluoroethylene-propylene diaphragm (10), valve body (1), valve gap (2) four is connected and fixed by link (4).
2. overall plastic membrane valve according to claim 1 is characterized in that: the place, lower end surface that valve rod lifting nut (5) cooperates with valve gap (2) is provided with two thrust ball bearings (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220511116 CN202852056U (en) | 2012-09-29 | 2012-09-29 | All-plastic diaphragm valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220511116 CN202852056U (en) | 2012-09-29 | 2012-09-29 | All-plastic diaphragm valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202852056U true CN202852056U (en) | 2013-04-03 |
Family
ID=47983261
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220511116 Expired - Lifetime CN202852056U (en) | 2012-09-29 | 2012-09-29 | All-plastic diaphragm valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202852056U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105972246A (en) * | 2016-07-08 | 2016-09-28 | 上海沐灵机电科技有限公司 | Novel manual diaphragm valve |
-
2012
- 2012-09-29 CN CN 201220511116 patent/CN202852056U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105972246A (en) * | 2016-07-08 | 2016-09-28 | 上海沐灵机电科技有限公司 | Novel manual diaphragm valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Quan Sugemofa Effective date of registration: 20200909 Granted publication date: 20130403 Pledgee: Agricultural Bank of China Limited Wenzhou Ouhai sub branch Pledgor: ZHEJIANG BAITONG ANTICORROSION EQUIPMENT Co.,Ltd. Registration number: Y2020330000657 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130403 |
|
| CX01 | Expiry of patent term |