CN204610894U - The pneumatic direct type diaphragm valve of a kind of core level M type open type - Google Patents
The pneumatic direct type diaphragm valve of a kind of core level M type open type Download PDFInfo
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- CN204610894U CN204610894U CN201420869684.4U CN201420869684U CN204610894U CN 204610894 U CN204610894 U CN 204610894U CN 201420869684 U CN201420869684 U CN 201420869684U CN 204610894 U CN204610894 U CN 204610894U
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Abstract
The utility model relates to the pneumatic direct type diaphragm valve of a kind of core level M type open type, this membrane valve comprises valve body, be arranged on the valve gap on valve body, flap, valve rod, be arranged on the support on valve gap, adjusting screw rod, cylinder, hand wheel pole and handwheel, joint between described valve body and valve gap is provided with barrier film, the bottom of valve rod is connected with flap through valve gap, and be arranged in valve body, the top of valve rod is connected with adjusting screw rod through support, described adjusting screw rod upper end is connected with hand wheel pole, handwheel is arranged on the upper end of hand wheel pole, operation film is provided with in described cylinder, upper thin web and lower thin web, the bottom of operation film is provided with thin web, and be connected with adjusting screw rod by upper thin web, the top of operation film is provided with lower thin web, and be connected with hand wheel pole by lower thin web.Compared with prior art, the utility model adopts film type pneumatic actuating mechanism, close structure, and shock resistance is strong, and profile is lightly attractive in appearance, long service life, easy accessibility.
Description
Technical field
The utility model belongs to valve design technical field, relates to a kind of pneumatic direct type diaphragm valve, especially relates to the pneumatic direct type diaphragm valve of a kind of core level M type open type.
Background technique
The pneumatic direct type diaphragm valve of core level M type is one of device important in pressurized-water reactor nuclear power plant, is also the parts belonging to safe secondary in nuclear power station.At present, the pneumatic actuator for operating membrane valve not yet realizes production domesticization at home, complete dependence on import.The pneumatic direct type diaphragm valve of core level M type is using barrier film as open-shut device, moved up and down along axis by pneumatic actuator band ovable valve stem, driver part and medium are in isolation, main operational principle is when valve access failure source of the gas, tension band ovable valve stem due to spring upward direction moves upward Open valve, and what ensure valve often opens performance; After valve connects source of the gas, move downward because bleed pressure overcomes spring tension band ovable valve stem in cylinder head, reach closedown effect.After cutting off source of the gas, the tension force effect due to spring makes valve recover to be in normally open.When the unexpected dead electricity of system is badly in need of Open valve, can by rotation hand wheel band moving sleeve, sleeve drives adjusting screw rod to move upward together with valve rod, Open valve.
In the pneumatic direct type diaphragm valve of core level M type, barrier film is the vital part of valve opening and closing and sealing, the quality of its quality directly has influence on sealability and the working life of valve, and therefore, the structure of diaphragm of rubber and material are by the sealability of membrane valve with play vital effect working life.But current many membrane valves also exist the technical problems such as barrier film is easy to wear, aging, and this makes many drawbacks such as valve run, drip, leak happen occasionally.
Summary of the invention
The purpose of this utility model is exactly provide a kind of straight-through type to overcome defect that above-mentioned prior art exists, adopts the pneumatic direct type diaphragm valve of core level M type open type of no-arbitrary pricing letter structure.
The purpose of this utility model can be achieved through the following technical solutions:
The pneumatic direct type diaphragm valve of a kind of core level M type open type, this membrane valve comprises valve body, be arranged on the valve gap on valve body, flap, valve rod, be arranged on the support on valve gap, adjusting screw rod, cylinder, hand wheel pole, handwheel, indicating arm and guide plate, joint between described valve body and valve gap is provided with barrier film, the bottom of described valve rod is connected with described flap through valve gap, and be arranged in valve body, the top of described valve rod is connected with described adjusting screw rod through support, described adjusting screw rod upper end is connected with described hand wheel pole through cylinder, described handwheel is arranged on the upper end of hand wheel pole, described indicating arm upper end is fixed on guide plate, lower end is fixedly connected with valve gap, described guide plate is connected with valve rod, described cylinder is connected with valve gap by support, and be provided with operation film in described cylinder, upper thin web and lower thin web, the bottom of described operation film is provided with thin web, and be connected with described adjusting screw rod by upper thin web, the top of described operation film is provided with lower thin web, and be connected with described hand wheel pole by lower thin web.
Described hand wheel pole outside is provided with sleeve, is provided with lining between this sleeve and hand wheel pole, and this lining is provided with the T-shaped key preventing lining from rotating.
Described sleeve inner is provided with the thrust washer that auxiliary socket moves up and down, and this thrust washer is positioned at the bottom of described lining.
Described sleeve bottom by hexagonal locking nut, packing ring and described lower thin web, operate film, upper thin web and adjusting screw rod and be fixedly connected with.
Also be provided with belleville spring outside described sleeve, the upper end of this belleville spring is provided with check ring.
Described hand wheel pole is provided with manual indicator, thrust ball bearing and circlip for hole, this circlip for hole is fixedly connected with described thrust ball bearing by round nut, lock washer, and described hand wheel pole side is also provided with the manual indicator bar for manual manipulation valve opening and closing.
Described cylinder to be fixedly connected with by bolt, packing ring by cylinder upper cover and lower cover of air cylinder and to combine, and the two ends of described operation film are separately fixed at the junction of cylinder upper cover and lower cover of air cylinder.
Described cylinder upper cover and lower cover of air cylinder are also respectively equipped with silently bolt.
Described support is also provided with limit switch.
Described valve gap is also provided with the screw for hunting leak to valve, this screw place is also provided with O-ring seals.
The pneumatic direct type diaphragm valve of a kind of core level M type open type of the utility model is when without bleed pressure, and valve is opening state, and when being exerted pressure by source of the gas, air pressure passes through pneumatic direct type diaphragm valve from top to bottom, now, under the effect of bleed pressure, and valve closing.
Compared with prior art, the utility model has following characteristics:
1) adopt film type pneumatic actuating mechanism, inner components close structure, shock resistance is strong, and profile is lightly attractive in appearance, and working life is compared with the corresponding raising of piston type cylinder 10 ~ 20 times, and convenient during dismounting;
2) adopt the flap head of ball taper, make flap and barrier film firm pasting, increase every film strength with this, barrier film adopts ball taper equally, seals match with the upper and lower two ends of valve body, utilizes the distortion that deflects of rubber to realize sealing;
3) thrust ball bearing has been installed at hand wheel pole back shaft place, to reduce moment during valve use operated by handwheel;
4) device such as limit switch is all placed in below pneumatic actuator, relative to former product, avoids the gap deviation in being threaded, and makes valve open-close state more accurate, and the overall center of gravity of valve decreases, and adds the steadiness of valve;
5) adopt belleville spring energy, the height of spring can be increased when confining force is constant, adapt to the situation of product.
Accompanying drawing explanation
Fig. 1 is a kind of core level M type open type of the utility model pneumatic direct type diaphragm valve sectional structure schematic diagram;
Fig. 2 is the structural representation of the pneumatic direct type diaphragm valve of a kind of core of the utility model level M type open type;
Description of symbols in figure:
1-flap, 2-valve body, 3-valve gap, 4-valve rod, 5-support, 6-adjusting screw rod, 7-upper thin web, 8-lower thin web, 9-operation film, 10-sleeve, 11-thrust washer, 12-lining, 13-thrust ball bearing, 14-circlip for hole, 15-manual indicator, 16-handwheel, 17-hand wheel pole, 18-belleville spring, 19-lock washer, 20-screw, 21-cylinder upper cover, 22-lower cover of air cylinder, 23-limit switch, 24-bolt, 25-indicating arm, 26-guide plate, 27-silently bolt, 28-manual indicator bar.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail.
Embodiment:
As shown in Fig. 1 ~ 2, the pneumatic direct type diaphragm valve of a kind of core level M type open type, this membrane valve comprises valve body 2, be arranged on the valve gap 3 on valve body 2, flap 1, valve rod 4, be arranged on the support 5 on valve gap 3, adjusting screw rod 6, cylinder, hand wheel pole 17, handwheel 16, indicating arm 25 and guide plate 26, joint between valve body 2 and valve gap 3 is provided with barrier film, the bottom of valve rod 4 is connected with flap 1 through valve gap 3, and arrange in the body 2, the top of valve rod 4 is connected with adjusting screw rod 6 through support 5, adjusting screw rod 6 upper end is connected with hand wheel pole 17 through cylinder, handwheel 16 is arranged on the upper end of hand wheel pole 17, indicating arm 25 upper end is fixed on guide plate 26, lower end is fixedly connected with valve gap 3, guide plate 26 is connected with valve rod 4, cylinder is connected with valve gap 3 by support 5, and be provided with operation film 9 in cylinder, upper thin web 7 and lower thin web 8, the bottom of operation film 9 is provided with thin web 7, and be connected with adjusting screw rod 6 by upper thin web 7, the top of operation film 9 is provided with lower thin web 8, and be connected with hand wheel pole 17 by lower thin web 8.
Wherein, hand wheel pole 17 outside is provided with sleeve 10, lining 12 is provided with between this sleeve 10 and hand wheel pole 17, this lining 12 is provided with the T-shaped key preventing lining 12 from rotating, hand wheel pole 17 is provided with manual indicator 15, thrust ball bearing 13 and circlip for hole 14, this circlip for hole 14 is fixedly connected with thrust ball bearing 13 by round nut, lock washer 19, and hand wheel pole 17 side is also provided with the manual indicator bar 28 for manual manipulation valve opening and closing.
Sleeve 10 inside is provided with the thrust washer 11 that auxiliary socket 10 moves up and down, and this thrust washer 11 is positioned at the bottom of lining 12; Bottom sleeve 10 by hexagonal locking nut, packing ring and lower thin web 8, operate film 9, upper thin web 7 and adjusting screw rod 6 and be fixedly connected with; Also be provided with belleville spring 18 outside sleeve 10, the upper end of this belleville spring 18 is provided with check ring.
Cylinder is fixedly connected with and is combined with lower cover of air cylinder 22 by bolt 24, packing ring by cylinder upper cover 21, the two ends of operation film 9 are separately fixed at the junction of cylinder upper cover 21 and lower cover of air cylinder 22, and cylinder upper cover 21 and lower cover of air cylinder 22 are also respectively equipped with silently bolt 27.
Support 5 being also provided with limit switch 23, valve gap 3 being also provided with the screw 20 for hunting leak to valve, this screw 20 place is also provided with O-ring seals.
In the present embodiment, the pneumatic direct type diaphragm valve of core level M type open type is when without bleed pressure, and valve is opening state, and when being exerted pressure by source of the gas, air pressure passes through pneumatic direct type diaphragm valve from top to bottom, now, under the effect of bleed pressure, and valve closing.
Claims (10)
1. the pneumatic direct type diaphragm valve of core level M type open type, this membrane valve comprises valve body, be arranged on the valve gap on valve body, flap, valve rod, be arranged on the support on valve gap, adjusting screw rod, cylinder, hand wheel pole, handwheel, indicating arm and guide plate, joint between described valve body and valve gap is provided with barrier film, the bottom of described valve rod is connected with described flap through valve gap, and be arranged in valve body, the top of described valve rod is connected with described adjusting screw rod through support, described adjusting screw rod upper end is connected with described hand wheel pole through cylinder, described handwheel is arranged on the upper end of hand wheel pole, described indicating arm upper end is fixed on guide plate, lower end is fixedly connected with valve gap, described guide plate is connected with valve rod, described cylinder is connected with valve gap by support, and be provided with operation film in described cylinder, upper thin web and lower thin web, it is characterized in that, the bottom of described operation film is provided with thin web, and be connected with described adjusting screw rod by upper thin web, the top of described operation film is provided with lower thin web, and be connected with described hand wheel pole by lower thin web.
2. the pneumatic direct type diaphragm valve of a kind of core level M type open type according to claim 1, is characterized in that, described hand wheel pole outside is provided with sleeve, is provided with lining between this sleeve and hand wheel pole, and this lining is provided with the T-shaped key preventing lining from rotating.
3. the pneumatic direct type diaphragm valve of a kind of core level M type open type according to claim 2, it is characterized in that, described sleeve inner is provided with the thrust washer that auxiliary socket moves up and down, and this thrust washer is positioned at the bottom of described lining.
4. the pneumatic direct type diaphragm valve of a kind of core level M type open type according to claim 2, is characterized in that, described sleeve bottom by hexagonal locking nut, packing ring and described lower thin web, operate film, upper thin web and adjusting screw rod and be fixedly connected with.
5. the pneumatic direct type diaphragm valve of a kind of core level M type open type according to claim 2, is characterized in that, be also provided with belleville spring outside described sleeve, the upper end of this belleville spring is provided with check ring.
6. the pneumatic direct type diaphragm valve of a kind of core level M type open type according to claim 1, it is characterized in that, described hand wheel pole is provided with manual indicator, thrust ball bearing and circlip for hole, this circlip for hole is fixedly connected with described thrust ball bearing by round nut, lock washer, and described hand wheel pole side is also provided with the manual indicator bar for manual manipulation valve opening and closing.
7. the pneumatic direct type diaphragm valve of a kind of core level M type open type according to claim 1, it is characterized in that, described cylinder to be fixedly connected with by bolt, packing ring by cylinder upper cover and lower cover of air cylinder and to combine, and the two ends of described operation film are separately fixed at the junction of cylinder upper cover and lower cover of air cylinder.
8. the pneumatic direct type diaphragm valve of a kind of core level M type open type according to claim 7, it is characterized in that, described cylinder upper cover and lower cover of air cylinder are also respectively equipped with silently bolt.
9. the pneumatic direct type diaphragm valve of a kind of core level M type open type according to claim 1, is characterized in that, described support is also provided with limit switch.
10. the pneumatic direct type diaphragm valve of a kind of core level M type open type according to claim 1, is characterized in that, described valve gap is also provided with the screw for hunting leak to valve, and this screw place is also provided with O-ring seals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420869684.4U CN204610894U (en) | 2014-12-31 | 2014-12-31 | The pneumatic direct type diaphragm valve of a kind of core level M type open type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420869684.4U CN204610894U (en) | 2014-12-31 | 2014-12-31 | The pneumatic direct type diaphragm valve of a kind of core level M type open type |
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| CN204610894U true CN204610894U (en) | 2015-09-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420869684.4U Active CN204610894U (en) | 2014-12-31 | 2014-12-31 | The pneumatic direct type diaphragm valve of a kind of core level M type open type |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108223832A (en) * | 2018-01-12 | 2018-06-29 | 江苏远洋阀门智控股份有限公司 | The one pneumatic straight way diaphragm valve of seed nucleus grade |
-
2014
- 2014-12-31 CN CN201420869684.4U patent/CN204610894U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108223832A (en) * | 2018-01-12 | 2018-06-29 | 江苏远洋阀门智控股份有限公司 | The one pneumatic straight way diaphragm valve of seed nucleus grade |
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