CN102032361B - High-performance normally-closed pneumatic diaphragm valve - Google Patents
High-performance normally-closed pneumatic diaphragm valve Download PDFInfo
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- CN102032361B CN102032361B CN2010106084657A CN201010608465A CN102032361B CN 102032361 B CN102032361 B CN 102032361B CN 2010106084657 A CN2010106084657 A CN 2010106084657A CN 201010608465 A CN201010608465 A CN 201010608465A CN 102032361 B CN102032361 B CN 102032361B
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- spring
- valve
- pneumatic diaphragm
- diaphragm valve
- thread bush
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Abstract
The invention discloses a high-performance normally-closed pneumatic diaphragm valve, which relates to the technical field of diaphragm valves and solves the problems of low sealing pressure, large size and large weight of the conventional large-caliber (over DN100) spring type normally-closed pneumatic diaphragm valve. One of the important causes of the problems is that spring force cannot be adjusted and locked effectively and reasonably. After a spring (6) which is used for keeping a valve closed in a current normally-closed pneumatic diaphragm valve is pre-tightened, an independent multipurpose threaded sleeve (4) drives a spring seat (5) to perform fine adjustment, so that needed spring force is accurate; after adjustment, a spring seat bolt (22) and a threaded sleeve bolt (23) are used for locking and fixing; and a multipurpose switch screw rod (3) can be used for pre-tightening the spring (6) at an assembly stage and can be used for opening the valve when an air source fails. The pneumatic diaphragm valve has a reasonable structure, small size, high sealing pressure, high stability and high opening speed, is easy and convenient to assemble, saves gas and energy, prolongs the service life of a diaphragm, improves the performance of the pneumatic diaphragm valve and expands the application range.
Description
(1) technical field
The invention 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 different according to the corrosivity under fluid difference and the different temperatures, select valve body lining material and diaphragm material.This valve is constructed because of no stuffing box, does not have dynamic sealing point, and closing in the valve is to lean on the pressure elasticity barrier film to accomplish, thereby stopped fluid run, drip, leak problem.
The spring pneumatic diaphragm valve keeps valve closing or opening state be lean on spring force be used for realize; Accomplish 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, inner and outer sealing property 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 present invention is exactly with having the spring (6) that works the valve that keeps shut in the normal close type pneumatic diaphragm valve at present now; Using independently behind the pretension state, multipurpose thread bush (4) drives spring seat (5) fine setting; Make its required spring force accurate, the adjustment back is 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, when source of the gas breaks down, also can be used as the unlatching of valve.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 present invention is a kind of spring high-performance normal close type pneumatic diaphragm valve.As shown in the figure, it by handwheel (1), pin (2), switch screw rod (3), thread bush (4), spring seat (5), spring (6), go up basin (7), plane bearing (8), bearing nut (9), the cover (10) that goes up and down, cover seat (11), a push rod (12), supporting disk (13), air bag (14), down basin (15), valve gap (16), flap (17), barrier film (18), valve body (19), push rod nut (20), go up basin end cap (21), spring seat bolt (22), thread bush bolt (23) and form.Wherein, To overlap seat (11) with push rod nut (20) and be fixed 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), and the upper end hole of the switch screw rod (3) and the cover (10) that goes up and down is for pass movingly and from the upper end; The cover (10) that goes up and down is connected fixing with cover seat (11); Switch screw rod (3) is connected with thread bush (4) internal thread, and thread bush (4) outside thread is connected with spring seat (5), and 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 invention
Fig. 2 is the high-performance normal close type pneumatic diaphragm valve left side sectional view of invention
Note among the figure:
1. basin 8. plane bearings 9. bearing nuts 10. go up and down to overlap basin end cap 22. spring seat bolts 23. thread bush bolts on 15. times basins of 11. cover seat 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. on handwheel 2. pins 3. switch screw rods 4. thread bushs 5. spring seats 6. springs 7.
(5) embodiment:
The present invention is a kind of spring normal close type pneumatic diaphragm valve, it by handwheel (1), pin (2), switch screw rod (3), thread bush (4), spring seat (5), spring (6), go up basin (7), plane bearing (8), bearing nut (9), the cover (10) that goes up and down, cover seat (11), a push rod (12), supporting disk (13), air bag (14), down basin (15), valve gap (16), flap (17), barrier film (18), valve body (19), push rod nut (20), go up basin end cap (21), spring seat bolt (22), thread bush bolt (23) and form.Its structure 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) are fixed on the valve body (19), and following basin (15) is fixed on the valve gap (16), and push rod (12) and valve gap (16) are for pass movingly and from the upper end; Air bag (14), supporting disk (13), cover seat (11) are 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), and the upper end hole of switch screw rod (3) and the cover (10) that goes up and down is for pass movingly and from the upper end, and the cover (10) that goes up and down is connected with cover (11) to be fixed; Spring (6) lower end is sitting on the supporting disk (13); Spring seat (5) is put in the upper end, and switch screw rod (3) is connected with thread bush (4) internal thread, and thread bush (4) outside thread is connected with spring seat (5); Rotary switch screw rod (3) makes thread bush (4), spring seat (5) do downward axial displacement; Spring (6) is compressed simultaneously, puts basin (7) when being compressed to certain altitude when spring (6) and fixes with following basin (15), and handwheel (1) is fixing with pin (2) with switch screw rod (3); Rotation hand wheel (1) makes thread bush (4), spring seat (5) do axial displacement to spring seat (5) or thread bush (4) upwards and contacts fully with last basin end cap (21); At this moment spring (6) active force acts on the basin end cap (21) fully, and supporting disk (13) promotion push rod (12) under the effect of spring force is done downward axial displacement simultaneously, and drives flap (17) through 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, and spring force acquisition optimum value is adjusted in the axial displacement that at this moment rotatable thread bush (4) is done downward or upward spring seat (5), uses spring seat bolt (22) that spring seat (5) and last basin end cap (21) are locked, with thread bush bolt (23) thread bush (4) and last basin end cap (21) are locked then; Keep the constant purpose of spring force and reach, with pin (2) that handwheel (1) and switch screw rod (3) is fixing at last.
When pressurized gas got into down basin (15), air bag (14) overcame under the effect of pressure that spring force promotes supporting disk (13), 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, and drive at this moment goes up and down to overlap (10), cover seat (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 by handwheel (1), pin (2), switch screw rod (3), thread bush (4), spring seat (5), spring (6), go up basin (7), plane bearing (8), bearing nut (9), the cover (10) that goes up and down, cover seat (11), a push rod (12), supporting disk (13), air bag (14), down basin (15), valve gap (16), flap (17), barrier film (18), valve body (19), push rod nut (20), go up basin end cap (21), spring seat bolt (22), thread bush bolt (23) and form; It is characterized in that push rod nut (20) will overlap seat (11) and be fixed on supporting disk (13), the push rod (12); Bearing nut (9) is fixed on switch screw rod (3) lower end with plane bearing (8); The upper hole of the switch screw rod (3) and the cover (10) that goes up and down is for pass movingly and from the upper end; The cover (10) that goes up and down is connected fixing with cover seat (11); Switch screw rod (3) is connected with thread bush (4) internal thread, and thread bush (4) outside thread is connected with spring seat (5), and 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 |
|---|---|---|---|
| CN2010106084657A CN102032361B (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 |
|---|---|---|---|
| CN2010106084657A CN102032361B (en) | 2010-12-28 | 2010-12-28 | High-performance normally-closed pneumatic diaphragm valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102032361A CN102032361A (en) | 2011-04-27 |
| CN102032361B true CN102032361B (en) | 2012-07-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010106084657A Active CN102032361B (en) | 2010-12-28 | 2010-12-28 | High-performance normally-closed pneumatic diaphragm valve |
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| CN (1) | CN102032361B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103527812A (en) * | 2012-07-05 | 2014-01-22 | 上海阀门五厂有限公司 | Nuclear grade M-type pneumatic straight diaphragm valve |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3465010B2 (en) * | 1993-11-22 | 2003-11-10 | 株式会社フジキン | Fluid controller |
| CN2235540Y (en) * | 1995-08-14 | 1996-09-18 | 杨永祥 | Thin film type relief pressure valve |
| CN101435515B (en) * | 2008-12-22 | 2010-11-24 | 哈尔滨龙江防腐阀门有限公司 | Air pressure type normally-closed pneumatic diaphragm valve |
| CN201902600U (en) * | 2010-12-28 | 2011-07-20 | 哈尔滨龙江防腐阀门有限公司 | High-performance normally-closed pneumatic diaphragm valve |
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- 2010-12-28 CN CN2010106084657A patent/CN102032361B/en active Active
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| Publication number | Publication date |
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| CN102032361A (en) | 2011-04-27 |
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