CN201902600U - High-performance normally-closed pneumatic diaphragm valve - Google Patents
High-performance normally-closed pneumatic diaphragm valve Download PDFInfo
- Publication number
- CN201902600U CN201902600U CN2010206836739U CN201020683673U CN201902600U CN 201902600 U CN201902600 U CN 201902600U CN 2010206836739 U CN2010206836739 U CN 2010206836739U CN 201020683673 U CN201020683673 U CN 201020683673U CN 201902600 U CN201902600 U CN 201902600U
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- spring
- valve
- pneumatic diaphragm
- diaphragm valve
- spring seat
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Abstract
A high-performance normally-closed pneumatic diaphragm valve belongs to the technical field of diaphragm valves. The high-performance normally-closed pneumatic diaphragm valve solves the problems of low sealing pressure, large volume and bulkiness of the existing heavy-caliber (DN: above 100) spring-type normally-closed pneumatic diaphragm valve. One of the reasons resulting in the problems is that spring force cannot be adjusted and locked effectively and reasonably. In the high-performance normally-closed pneumatic diaphragm valve, a spring (6), which acts to keep the valve closed in the existing normally-closed pneumatic diaphragm valve, is preloaded first, and then an independent multi-purpose thread bushing (4) drives a spring seat (5) for fine adjustment, so that the required spring force is precise; after the adjustment, spring seat bolts (22) and a thread bushing bolts (23) are used for fixation; and a multi-purpose switching screw (3) can be used for preloading the spring (6) in the assembling stage, and can also be used for opening the valve in case of an air source failure. The utility model has the advantages of reasonable structure, simple and convenient assembly, small volume, high sealing pressure, good stability, high opening speed, and air and energy saving; and the service life of a diaphragm is greatly increased, so that the performance of the pneumatic diaphragm valve is improved to a certain extent, and the application range is wider.
Description
(1) technical field
The utility model belongs to the membrane valve technical field.Particularly a kind of spring high-performance normal close type pneumatic diaphragm valve.
(2) background technique
Membrane valve is widely used in fields such as papermaking, wine brewing, sugaring, starch, pharmacy, oil, chemical industry, thermoelectricity, uses on corrosivity, non-aggressive and the fluid production line with small-particle suspension.It is the opening/closing mechanism that the control fluid flows.Membrane valve can be selected valve body lining material and diaphragm material according to the corrosivity difference under fluid difference and the different temperatures.This valve is constructed because of no stuffing box, does not have dynamic sealing point, and closing in the valve is that the pressured elastic diaphragm that contracts is finished, thereby stopped fluid run, drip, leak problem.
The spring pneumatic diaphragm valve keeps valve closing or opening state be by spring force be used for realize; Finish by pressurized gas (generally being pressurized air) and change this state.Can not be divided into by there being the control free state: normal close type (the free state valve is closed); Open type (the free state valve is opened).It mainly is used in pneumatic diaphragm valve in the control of valve remote auto.
At present existing heavy caliber (more than the DN100) spring normal close type pneumatic diaphragm valve, sealing load is low, volume is big, heavy, and one of major reason that causes these problems can not be carried out effective and reasonable adjustment and locking to spring force exactly.Because cause specifics such as the anticorrosive property of this valve, inside and outside sealing can not be gone beyond some special occasions.Bring very big trouble so just for applying unit and project planner, can only adopt avoidance, local step-down or local method of boosting to solve, must cause very big waste like this.
(3) summary of the invention
The utility model is exactly to work the spring (6) that keeps throttle down in the existing normal close type pneumatic diaphragm valve at present, using independently behind the pretension state, multipurpose thread bush (4) drives spring seat (5) fine setting, make its required spring force accurate, adjust the back and be locked with spring seat bolt (22), thread bush bolt (23); Multipurpose switch screw rod (3) can be used to preloading spring (6) at assembling stage, also can be used as the unlatching of valve when source of the gas breaks down.It is rational in infrastructure, assembling is simple and convenient, volume is little, sealing load is high, good stability, and opening speed is fast, solar term, energy-conservation, barrier film increase working life greatly.Existing normal close type pneumatic diaphragm valve and high-performance normal close type pneumatic diaphragm valve parameter relatively see the following form:
Technological scheme:
The utility model is a kind of spring high-performance normal close type pneumatic diaphragm valve.As shown in the figure, it is made up of handwheel (1), pin (2), switch screw rod (3), thread bush (4), spring seat (5), spring (6), last basin (7), plane bearing (8), bearing nut (9), lifting cover (10), block set (11), push rod (12), supporting disk (13), air bag (14), following basin (15), valve gap (16), flap (17), barrier film (18), valve body (19), push rod nut (20), last basin end cap (21), spring seat bolt (22), thread bush bolt (23).Wherein, with push rod nut (20) block set (11) is fixed on supporting disk (13) and the push rod (12), bearing nut (9) is fixed on switch screw rod (3) bottom with plane bearing (8), the upper end hole of switch screw rod (3) and lifting cover (10) is for passing movingly and from the upper end, lifting cover (10) is connected and fixed with block set (11), switch screw rod (3) is connected with thread bush (4) internal thread, thread bush (4) outside thread is connected with spring seat (5), spring seat (5) is fixed on the basin end cap (21) with spring seat bolt (22), thread bush (4) is fixed on the basin end cap (21) with thread bush bolt (23), and handwheel (1) is fixed on switch screw rod (3) top with pin (2).
(4) description of drawings
Fig. 1 is the high-performance normal close type pneumatic diaphragm valve plan view of model utility
Fig. 2 is the high-performance normal close type pneumatic diaphragm valve left side sectional view of model utility
Note among the figure:
1. basin end cap 22. spring seat bolts 23. thread bush bolts on 15. times basins of 11. block sets, 12. push rod 13. supporting disks, 14. air bags, 16. valve gaps, 17. flaps, 18. barrier films, 19. valve bodies, the 20. push rod nuts 21. are overlapped in 10. liftings of basin 8. plane bearings 9. bearing nuts on handwheel 2. pins 3. switch screw rods 4. thread bushs 5. spring seats 6. springs 7.
(5) embodiment:
The utility model is a kind of spring normal close type pneumatic diaphragm valve, and it is made up of handwheel (1), pin (2), switch screw rod (3), thread bush (4), spring seat (5), spring (6), last basin (7), plane bearing (8), bearing nut (9), lifting cover (10), block set (11), push rod (12), supporting disk (13), air bag (14), following basin (15), valve gap (16), flap (17), barrier film (18), valve body (19), push rod nut (20), last basin end cap (21), spring seat bolt (22), thread bush bolt (23).Its structure such as Fig. 1, Fig. 2, shown in, barrier film (18) is fixed on the flap (17), flap (17) is fixed on the push rod (12), valve gap (16), barrier film (18) is fixed on the valve body (19), following basin (15) is fixed on the valve gap (16), push rod (12) and valve gap (16) are for passing movingly and from the upper end, air bag (14), supporting disk (13), block set (11) is fixed on the push rod (12) by push rod nut (20), bearing nut (9) is fixed on switch screw rod (3) lower end with plane bearing (8), the upper end hole of switch screw rod (3) and lifting cover (10) is for passing movingly and from the upper end, lifting cover (10) is connected and fixed with block set (11), spring (6) lower end is sitting on the supporting disk (13), spring seat (5) is put in the upper end, switch screw rod (3) is connected with thread bush (4) internal thread, thread bush (4) outside thread is connected with spring seat (5), rotary switch screw rod (3) makes thread bush (4), spring seat (5) is done downward axial displacement, spring (6) is compressed simultaneously, putting basin (7) when being compressed to certain altitude when spring (6) fixes with following basin (15), handwheel (1) is fixing with pin (2) with switch screw rod (3), rotation hand wheel (1) makes thread bush (4), spring seat (5) is done axial displacement to spring seat (5) or thread bush (4) upwards and is contacted fully with last basin end cap (21), at this moment spring (6) active force acts on the basin end cap (21) fully, supporting disk (13) promotes push rod (12) and does downward axial displacement under the effect of spring force simultaneously, and drive flap (17) by valve gap (16), the bottom that makes elastic diaphragm (18) compress valve body (19) reaches the purpose of throttle down, switch screw rod this moment (3) does not stress fully, at this moment spring force acquisition optimum value is adjusted in the axial displacement that rotatable thread bush (4) is done downward or upward spring seat (5), use spring seat bolt (22) that spring seat (5) and last basin end cap (21) are locked then, with thread bush bolt (23) thread bush (4) and last basin end cap (21) are locked, keep the constant purpose of spring force and reach, use pin (2) that handwheel (1) and switch screw rod (3) is fixing at last.
When pressurized gas entered down basin (15), air bag (14) overcame spring force promotion supporting disk (13) under the effect of pressure, push rod (12) is done axial displacement upwards, drives flap (17) elastic diaphragm (18) is opened, be i.e. valve opening.
When source of the gas broke down, rotatable handwheel (1) made switch screw rod (3) do axial displacement upwards, at this moment drove lifting cover (10), block set (11), push rod (12) flap (17) elastic diaphragm (18) unlatching, i.e. valve opening.After air failure was got rid of, rotation hand wheel (1) made switch screw rod (3) do downward axial displacement, and to the state of not stressing, valve recovers closed condition.
Claims (1)
1. high-performance normal close type pneumatic diaphragm valve, it is by handwheel (1), pin (2), switch screw rod (3), thread bush (4), spring seat (5), spring (6), last basin (7), plane bearing (8), bearing nut (9) lifting cover (10), block set (11), push rod (12), supporting disk (13), air bag (14), following basin (15), valve gap (16), flap (17), barrier film (18), valve body (19), push rod nut (20), last basin end cap (21), spring seat bolt (22), thread bush bolt (23) is formed, it is characterized in that push rod nut (20) is fixed on block set (11) on supporting disk (13) and the push rod (12), bearing nut (9) is fixed on switch screw rod (3) lower end with plane bearing (8), the upper hole of switch screw rod (3) and lifting cover (10) is for passing movingly and from the upper end, lifting cover (10) is connected and fixed with block set (11), switch screw rod (3) is connected with thread bush (4) internal thread, thread bush (4) outside thread is connected with spring seat (5), spring seat (5) is fixed on the basin end cap (21) with spring seat bolt (22), thread bush (4) is fixed on the basin end cap (21) with thread bush bolt (23), and handwheel (1) is fixed on switch screw rod (3) upper end with pin (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206836739U CN201902600U (en) | 2010-12-28 | 2010-12-28 | High-performance normally-closed pneumatic diaphragm valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206836739U CN201902600U (en) | 2010-12-28 | 2010-12-28 | High-performance normally-closed pneumatic diaphragm valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201902600U true CN201902600U (en) | 2011-07-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206836739U Expired - Lifetime CN201902600U (en) | 2010-12-28 | 2010-12-28 | High-performance normally-closed pneumatic diaphragm valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201902600U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102032361A (en) * | 2010-12-28 | 2011-04-27 | 哈尔滨龙江防腐阀门有限公司 | High-performance normally-closed pneumatic diaphragm valve |
-
2010
- 2010-12-28 CN CN2010206836739U patent/CN201902600U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102032361A (en) * | 2010-12-28 | 2011-04-27 | 哈尔滨龙江防腐阀门有限公司 | High-performance normally-closed pneumatic diaphragm valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110720 Effective date of abandoning: 20120725 |