CN2259540Y - Relief valve - Google Patents
Relief valve Download PDFInfo
- Publication number
- CN2259540Y CN2259540Y CN 96209152 CN96209152U CN2259540Y CN 2259540 Y CN2259540 Y CN 2259540Y CN 96209152 CN96209152 CN 96209152 CN 96209152 U CN96209152 U CN 96209152U CN 2259540 Y CN2259540 Y CN 2259540Y
- Authority
- CN
- China
- Prior art keywords
- control valve
- valve
- seat
- valve seat
- valve body
- 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 - Fee Related
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- Control Of Fluid Pressure (AREA)
Abstract
The utility model relates to a pressure reducing valve, which comprises a valve casing, an inlet, an outlet and a pressure reducing part, and is characterized in that the pressure reducing part is composed of a spring (2), a membrane (3), a connecting rod (5), a main valve body (6), a valve seat (4), a control valve seat (8), a control valve body (10) and a control valve body seat (9) thereof; the spring is arranged between the casing and the membrane; the membrane, the connecting rod, the control valve and the control valve seat are fixedly connected together and the main valve body is arranged in the control valve seat. The pressure reducing valve of the utility model has simple structure and easy production; the safe operation of the valve back equipment can be reliably ensured; the utility model is especially suitable for places with unstable pressure at the inlet and is also suitable for gas and liquid in the same way.
Description
The utility model relates to control valve technical field, specifically reduction valve.
Existing fluid pressure valve generally is directly to realize by the effect of spring, and its decompression is to realize by the pressure reduction of importing and exporting.After reduction valve was set up, the pressure reduction of import and export was exactly certain value, also is that outlet pressure is that inlet pressure deducts a constant pressure difference.When inlet pressure was non-constant, outlet pressure was also non-constant, and this reduction valve is not suitable for needs the constant field boundary of outlet pressure to close.
The purpose of this utility model provides a kind of outlet pressure that guarantees and is no more than the reduction valve of setting.
The utility model is achieved in that this reduction valve comprises valve casing, import, outlet and decompression part, it is characterized in that decompression partly is made of spring, barrier film, connecting rod, main valve body, valve seat, control valve seat, control valve body and control valve body seat thereof.Spring is between housing and barrier film, and effect is to thrust to the right of barrier film.Barrier film, connecting rod, control valve and control valve seat are consolidated, and can move to the left and right together when outlet pressure changes.Main valve body places in the control valve seat, and the outlet body compresses seal ring and main valve seat, and nut is pressed on the housing, wherein on the valve seat primary valve is arranged, and has on the main valve body from pressing the hole, and the control valve port is arranged on the control valve seat.During the work of this reduction valve, the unlatching of valve only is decided by outlet pressure, and irrelevant with inlet pressure.
Below in conjunction with accompanying drawing the utility model is described in further detail, but is not limited to shown in the accompanying drawing.
Fig. 1 is a structural representation of the present utility model
Among the figure, the 1-housing, the 2-spring, the 3-barrier film, the 4-valve seat, the 5-connecting rod, the 6-main valve body, the 7-seal ring, the 8-control valve seat, 9-control valve body seat, the 10-control valve body, 11-exports body, the 12-gland nut, 13-controls valve port, and 14-is from pressing the chamber, and 15-is from pressing hole, 16-primary valve.
As shown in the figure, the utility model is by housing 1, spring 2, barrier film 3, connecting rod 5, main valve body 6, valve seat 4, control valve seat 8, control valve body 10 and control valve body seat 9 thereof, outlet body 11, gland nut 12, and seal ring 7 constitutes.Spring is between housing and barrier film, and barrier film, connecting rod, control valve and control valve seat are consolidated, and the porose connecting rod that makes passes on valve seat 4 and the control valve seat 8, and connecting rod is 3 (also more than 3), and uniform on circumference.Main valve body 6 places in the control valve seat 8, and the outer ring of main valve body requires tightly to cooperate with the inner ring of control valve seat 8, and working medium can not leaked.Outlet body 11 compresses seal ring 7 and main valve seat 8, and nut 12 is pressed on the housing 1.Primary valve 16 is wherein arranged on the valve seat, have on the main valve body, control valve port 13 is arranged on the control valve seat from pressing hole 15.
During work, when outlet pressure was under set pressure, spring overcame pressure, promote diaphragm to the right, and then drivening rod, control valve body seat, control valve body move right also, control valve 13 is opened, the same with outlet from the pressure of pressing chamber 14, primary valve 16 is opened, and reduction valve is in open mode.
When outlet pressure during greater than setting, the pressure that produces on diaphragm is greater than the thrust of spring, and be moved to the left and then drivening rod, control valve body seat, control valve are moved to the left, control valve port 13 is closed, and high-pressure working medium presses chamber 14 to communicate with primary valve 16 through primary valve 16, press hole 15 to enter from pressing chamber 14 certainly certainly, thereby pressure also is the same, but press the area of the area in chamber greater than primary valve 16 certainly, so main valve body is tightly pushed down valve port, reduction valve in off position.
In addition, barrier film and spring also can be contained in Way out, use lever to connect, and also can reach the purpose of above-mentioned decompression.
Structure of relief pressure valve of the present utility model is simple, is easy to make, and can reliably guarantee the safe operation of equipment behind the valve, is specially adapted to the unsettled place of inlet pressure, and similarly suitable gas and liquid.
Claims (4)
1, a kind of reduction valve, comprise valve casing, import, outlet and decompression part, it is characterized in that decompression is partly by spring (2), barrier film (3), connecting rod (5), main valve body (6), valve seat (4), control valve seat (8), control valve body (10) and control valve body seat (9) thereof constitute, spring is between housing and barrier film, barrier film, connecting rod, control valve and control valve seat are consolidated, main valve body places in the control valve seat, outlet body (11) compresses seal ring (7) and main valve seat (8), nut (12) is pressed on the housing (1), primary valve (16) is wherein arranged on the valve seat, have on the main valve body from pressing hole (15), control valve port (13) is arranged on the control valve seat.
2, reduction valve according to claim 1 is characterized in that connecting rod more than 2, and uniform on circumference.
3, reduction valve according to claim 1 is characterized in that on valve seat (4) and the control valve seat (8) hole that connecting rod is passed being arranged.
4, reduction valve according to claim 1 is characterized in that the outer ring of main valve body (6) tightly cooperates with the inner ring of control valve seat (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96209152 CN2259540Y (en) | 1996-04-29 | 1996-04-29 | Relief valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96209152 CN2259540Y (en) | 1996-04-29 | 1996-04-29 | Relief valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2259540Y true CN2259540Y (en) | 1997-08-13 |
Family
ID=33892880
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96209152 Expired - Fee Related CN2259540Y (en) | 1996-04-29 | 1996-04-29 | Relief valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2259540Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109373030A (en) * | 2018-11-21 | 2019-02-22 | 江西洪都航空工业集团有限责任公司 | Safety valve |
-
1996
- 1996-04-29 CN CN 96209152 patent/CN2259540Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109373030A (en) * | 2018-11-21 | 2019-02-22 | 江西洪都航空工业集团有限责任公司 | Safety valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |