CN2056718U - Plastic diaphragm control valve for diaphragm cylinder - Google Patents
Plastic diaphragm control valve for diaphragm cylinder Download PDFInfo
- Publication number
- CN2056718U CN2056718U CN 89215879 CN89215879U CN2056718U CN 2056718 U CN2056718 U CN 2056718U CN 89215879 CN89215879 CN 89215879 CN 89215879 U CN89215879 U CN 89215879U CN 2056718 U CN2056718 U CN 2056718U
- Authority
- CN
- China
- Prior art keywords
- diaphragm
- valve
- piston rod
- membrane type
- type cylinder
- 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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- Self-Closing Valves And Venting Or Aerating Valves (AREA)
- Fluid-Driven Valves (AREA)
Abstract
The utility model discloses a plastic diaphragm control valve for diaphragm cylinder which is suitable for a liquid flow automatic control. The deformation of a rubber leather bowl connected with the lower end of a piston rod is pushed to reach the aim of controlling the opening and closing of the passage of a lower part plastic valve body by compressing air, operating a rubber diaphragm and the movement of the piston rod. Compared with the existing electric or electrohydraulic control valves, the utility model has the advantages of simple structure, corrosion resistance and high safe. The utility model is suitable for the automatic control of the liquid flow in inflammable, combustible and highly corrosive industries, such as a petroleum industry, a chemical industry, a beverage industry and a water processing industry.
Description
The utility model relates to a kind of flow automatic control valve, particularly a kind of membrane type cylinder plastic diaphragms control valve, and it belongs to the hydraulic control field.
At present, be used for the automatic valve of controlling of fluid flow and mostly be electric liquid and electric fabricated structure.Shown in Figure 1 is a kind of electromagnetic pneumatic control valve commonly used now, and it mainly is made up of metal valve body 1, rubber membrane 2, the valve gap 3 that is drilled with tap hole 7 and electromagnet 4.Its working principle is: be in outage rear valve body 1 at electromagnet 4 and be closed condition, this moment, the pressure by the working medium that acts on rubber membrane 2 epicoeles 5 made valve keep sealing, when energising, the moving iron core 6 of electromagnet 4 is upwards picked up by electromagnetic force, tap hole 7 in the middle of having opened, this moment, rubber membrane epicoele 5 internal pressures descended, and rubber membrane 2 pops up, and valve body 1 is opened.When outage, moving iron core 6 falls tap hole 7 is blocked, and pressure medium rises in the epicoele 5, rubber membrane 2 is depressed valve body 1 is closed.
First shortcoming of such control valve is a complex structure, to working medium quality requirement height, if working medium is impure or impurity is arranged, then can cause moving iron core 6(also to claim spool) the obstruction of stuck or tap hole 7, this will influence the proper functioning of system.Second shortcoming of such valve is that its control media is exactly a fluid itself, this for beverage, brewage, this valve that water treatment etc. with liquid is fluid is obsolete, because the water quality fluid not only can not pass through tiny tap hole 7, and be difficult for contacting with the electromagnet that electricity, magnetic signal are arranged, therefore such valve only is applicable to that fluid is that its Applicable scope is very narrow under the minority operating mode of gas.
The 3rd shortcoming of such valve is that valve body 1 is made for metal, and be inapplicable to oil, chemical industry, beverage, brewing industry that corrosion is arranged, just says that such valve was also inapplicable when control media can be the water quality fluid, increases because corrosion is leaked it, and the life-span descends.
The 4th shortcoming of such valve is because electromagnet has electrical spark or electromagnetic field to produce when switching, so for inflammable, explosive, have the width of cloth to penetrate, such valve of Chao Shi place is difficult for employing and maybe mustn't adopts especially, because this can cause the increase of unsafe factor and cause iron core 6(spool) get rusty and do not open.
The 5th shortcoming of such valve is that big specification is few, because specification is big more, electromagnet is big more, and price is expensive more, and noise is big more, therefore can not satisfy the needs of the big flow fluid control of every profession and trade.
Though have stainless steel or a small amount of Plastic valve to come out at present, solved some etching problems, owing to the former costs an arm and a leg, processing difficulties, flow is minimum greatly, can not satisfy the needs of every profession and trade.The latter mostly is again manually, can not realize the automatic control of system.
The purpose of this utility model just is to overcome the above-mentioned shortcoming and defect of prior art, the membrane type cylinder plastic diaphragms control valve that is applicable to the automatic control of fluid flow that provide a kind of applied widely, simple in structure, cost is low.
The utility model mainly by the valve seat of the valve body of bottom, rubber cup, intermediate portion and above membrane type cylinder three parts constitute.Accompany an elastomer diaphragm in the middle of the membrane type cylinder, the guide block and the rubber cup of this diaphragm and piston rod, piston-rod lower end fuse.The bottom valve body is connected and fixed with rubber cup and valve seat lower flange again.After membrane type upper chamber of air cylinder chamber fed pressurized air, diaphragm moved downward together with piston rod, leather cup valve channel is closed, and diaphragm, piston rod etc. just upwards lift valve channel is opened when to membrane type lower chamber of air cylinder chamber venting.
Fig. 1 is existing electromagnetic pneumatic control valve structure principle chart.
Fig. 2 is the utility model structure principle chart.
Fig. 3 is the A-A sectional drawing of Fig. 2.
Be described below in conjunction with accompanying drawing 2 and 3 pairs of the utility model:
Accompany a round rubber diaphragm 24 in the middle of the dish-shaped membrane type cylinder upper shell 19 of two back-offs and the lower shell body 17 in the utility model, and membrane type cylinder upper shell 19, lower shell body 17 and elastomer diaphragm 24 threes are connected and fixed by bolt 18.Elastomer diaphragm 24 is separated into two independently upper and lower chambers with membrane type cylinder 25.The pilot hole that there is the piston rod 15 of an evagination at lower shell body 17 centers is equipped with seal ring 28 on the pilot hole circumference, the pilot hole cylindrical cooperates the location with valve seat upper flange 16 rims of the mouth.Lower shell body 17 is connected and fixed by screw 27 with valve seat upper flange 16, and the tapped through hole 26 that is connected with pipeline is arranged on the lower shell body 17, and there is a tapped through hole 20 at upper shell 19 centers.
Round rubber matrix 24 centers in the middle of the membrane type cylinder 25 penetrate after the upper end of piston rod by two fixed discs, 22 clampings in the centre, and the nut 21 by piston rod 15 upper ends with 24,22, with 15 link together.Have on this diaphragm 24 one downwards the shape of recessed annular groove 23,23 be generally semicircle or arc is illustrated in figure 2 as semicircle.Can certainly be rectangle or triangular groove.This diaphragm had both played the effect of piston in the general cylinder, make air cylinder structure, size, weight greatly simplify and reduce again, also make upper shell 19, lower shell body 17 inwalls not have any requirement on machining accuracy, therefore this control valve membrane type cylinder 25 costs are greatly reduced.Generally there are fabric sandwich or metal sandwich in these diaphragm 24 inside, its objective is to improve intensity and working life.
Both are connected piston rod 15 lower ends and guide block 11 upper end circular grooves 12 by pin 13, guide block 11 screwed hole of centre screw with the thread head 10 of rubber cup 9 upper ends of its underpart and are connected, and rubber cup 9 tops have a round boss to contact the location with the bottom plane of the cone-shaped groove 31 at guide block 11 lower peripheral surface centers.
Valve seat 14 had both played the effect that connects membrane type cylinder 25 and valve body 8, again piston rod 15, guide block 11, rubber cup 9 was contained in it.Valve seat lower flange 30 is connected and fixed by bolt 29 with rubber cup 9 and valve body 8 threes.Valve body 8 is made for anti-corrosion plastics, therefore has corrosion resistance and than the long life.
Be to improve after rubber cup 9 is depressed reliable sealing to be arranged in addition, be designed to down throw curved surface, see shown in Fig. 2 dotted line with leather cup 9 upthrow curved surfaces are identical so that depress the back with leather cup 9 contacted guide blocks 11 bottoms.
The utility model working principle is when need cut off plastics valve body 8 passages,, to membrane type cylinder 25 upper chamber feeding pressurized air elastomer diaphragm 24 together to be depressed together with piston rod 15, guide block 11, rubber cup 9 by tapped through hole 20.See dotted line position.When need are opened valve body 8 passages, feed pressurized air by tapped through hole 26 to membrane type cylinder 25 lower chambers, elastomer diaphragm 24 and piston rod 15 are upwards lifted get final product.
Feed the flow size (pressure) of control gaseous in the membrane type cylinder 25 by control, can reach what of control elastomer diaphragm 24 distortion, can realize the difference of piston rod 15 strokes with this, reach control valve body 8 passage open and close degree, and then reach control fluid flow what, realized automatic control to flow system flow.
This shows that first characteristics of the present utility model are that the application valve body passage is opened, the control medium that closes and valve body inner fluid do not have any relation. Valve body inner fluid (such as beverage, liquid chemical product) does not contact with the other pieces of control valve by the isolation of rubber cup, this control valve scope of application is enlarged, no matter the valve body inner fluid be gas or liquid or can not with the fluid of Metal Contact, this control valve is all general. Second characteristic is that valve body is that corrosion-resistant plastic material or anti-corrosion macromolecular material are made, therefore solved the valve body inner fluid to the valve body etching problem, therefore this membrane type cylinder plastic diaphragm valve has good corrosion resistance and long service life, is specially adapted to the industries such as oil, chemical industry, beverage, sewage disposal of corrosion. The 3rd characteristic are that electric spark and the electromagnetic field that this membrane type cylinder plastic diaphragm valve produces when not having electromagnetic actuation exists, so concerning the petrochemical industry of inflammable, explosive, Keep away from radioactive, this control valve has higher security reliability. The 4th characteristics are that this control valve control channel is roomy unimpeded, have eliminated the control Fluid Flow in A and have not freely reached the phenomenon of easily being stopped up by impurity, and operational reliability is improved. The 5th characteristic are because the membrane type cylinder dimensions, and greatly reducing and simplifying of weight and structure makes the product of the big specification flow of this control valve be able to come out under lower cost, can satisfy the needs that every profession and trade is controlled automatically to large flow fluid.
Claims (1)
1, the utility model relates to a kind of membrane type cylinder plastic diaphragms control valve, it is characterized in that:
The dish-shaped housing therebetween of two back-offs of a, membrane type cylinder has a round rubber diaphragm, and the three is connected and fixed by bolt, one tapped through hole is all arranged on membrane type cylinder upper shell and the lower shell body, there is the pilot hole of an evagination in the lower shell body center portion, and pilot hole cylindrical and valve seat upper flange rim of the mouth cooperate;
The piston rod upper end is passed in b, round rubber diaphragm center portion, and be clipped in the middle by fixed disc on two, by piston rod upper end nut this diaphragm and piston rod upper end are connected and fixed, this diaphragm has a recessed annular groove, the annular groove shape is generally semicircle or arc, and generally there are yarn fabric interlayer or wire netting class interlayer in this diaphragm inside;
C, the piston-rod lower end that is connected with the round rubber diaphragm are connected by pin with the guide block that has circular groove, the guide block lower central has a cone-shaped groove, groove bottom plane and rubber cup upper circular boss top plane contact location, and screw by guide block screwed hole of centre and thread head on the rubber cup and to be connected;
D, valve seat upper flange and membrane type cylinder lower shell body are connected and fixed by screw, and valve seat lower flange and rubber cup and plastics valve body three are connected and fixed by bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89215879 CN2056718U (en) | 1989-09-06 | 1989-09-06 | Plastic diaphragm control valve for diaphragm cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89215879 CN2056718U (en) | 1989-09-06 | 1989-09-06 | Plastic diaphragm control valve for diaphragm cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2056718U true CN2056718U (en) | 1990-05-02 |
Family
ID=4871388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89215879 Expired - Lifetime CN2056718U (en) | 1989-09-06 | 1989-09-06 | Plastic diaphragm control valve for diaphragm cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2056718U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7063304B2 (en) | 2003-07-11 | 2006-06-20 | Entegris, Inc. | Extended stroke valve and diaphragm |
| CN100387859C (en) * | 2005-02-07 | 2008-05-14 | 周新光 | Diaphragm of coupling |
| CN100394086C (en) * | 2002-09-13 | 2008-06-11 | 费希尔控制国际公司 | Locking pin for attaching a control valve to a valve stem |
| CN102563189A (en) * | 2011-12-23 | 2012-07-11 | 中国航天科技集团公司第六研究院第十一研究所 | Rubber fabric clamped film sheet and manufacturing method thereof |
| CN104533871A (en) * | 2014-12-26 | 2015-04-22 | 合肥中辰轻工机械有限公司 | Cylinder controlled by diaphragm |
| CN107940021A (en) * | 2017-11-29 | 2018-04-20 | 宿州中矿三杰科技有限公司 | A kind of mine underground dust-extraction unit |
| CN108969810A (en) * | 2018-06-25 | 2018-12-11 | 苏州市百世康医疗器械有限公司 | A kind of automatic jet control device |
| CN109737216A (en) * | 2019-03-01 | 2019-05-10 | 李珊 | A kind of anti-leak control valve |
| US11306844B2 (en) | 2017-06-26 | 2022-04-19 | Lixil Corporation | Pilot solenoid valve |
-
1989
- 1989-09-06 CN CN 89215879 patent/CN2056718U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100394086C (en) * | 2002-09-13 | 2008-06-11 | 费希尔控制国际公司 | Locking pin for attaching a control valve to a valve stem |
| US7063304B2 (en) | 2003-07-11 | 2006-06-20 | Entegris, Inc. | Extended stroke valve and diaphragm |
| CN100387859C (en) * | 2005-02-07 | 2008-05-14 | 周新光 | Diaphragm of coupling |
| CN102563189A (en) * | 2011-12-23 | 2012-07-11 | 中国航天科技集团公司第六研究院第十一研究所 | Rubber fabric clamped film sheet and manufacturing method thereof |
| CN104533871A (en) * | 2014-12-26 | 2015-04-22 | 合肥中辰轻工机械有限公司 | Cylinder controlled by diaphragm |
| US11306844B2 (en) | 2017-06-26 | 2022-04-19 | Lixil Corporation | Pilot solenoid valve |
| CN107940021A (en) * | 2017-11-29 | 2018-04-20 | 宿州中矿三杰科技有限公司 | A kind of mine underground dust-extraction unit |
| CN108969810A (en) * | 2018-06-25 | 2018-12-11 | 苏州市百世康医疗器械有限公司 | A kind of automatic jet control device |
| CN109737216A (en) * | 2019-03-01 | 2019-05-10 | 李珊 | A kind of anti-leak control valve |
| CN109737216B (en) * | 2019-03-01 | 2019-12-24 | 浙江康瑞阀门有限公司 | Anti-leakage control valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |