CN2665486Y - An automatic pressure regulating valve - Google Patents
An automatic pressure regulating valve Download PDFInfo
- Publication number
- CN2665486Y CN2665486Y CN 200320107503 CN200320107503U CN2665486Y CN 2665486 Y CN2665486 Y CN 2665486Y CN 200320107503 CN200320107503 CN 200320107503 CN 200320107503 U CN200320107503 U CN 200320107503U CN 2665486 Y CN2665486 Y CN 2665486Y
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- CN
- China
- Prior art keywords
- pressure
- flashboard
- valve
- piston
- valve body
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- 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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Abstract
The utility model discloses an automatic pressure regulating valve in which one end of the pressure spring is pressed against a pressure screw through a set piston and the other end is connected to a flashboard through a starting piston. A flashboard seat with the flashboard is arranged between the valve inlet opening and the pressure spring outlet opening. A diversion hole is arranged on the flashboard surface. The flashboard seat of the valve inlet end is provided with a lead hole communicated to the pressure chamber of the starting piston bottom. A communicating tube is arranged between the valve outlet opening and the pressure chamber of the starting piston top. The top of starting piston is subject to the combined action of the valve outlet opening medium pressure and the pressure spring pressure, and the bottom is subject to the action of the valve inlet opening medium pressure. The flashboard is driven to be in upward or downward movement through the starting piston according to the magnitude of the pressure subjected. Thus the automatic open and closing of valve can be achieved. The utility model is applicable to the industries such as oil and chemical etc with automatic constant pressure control of valve port.
Description
Technical field
The utility model relates to a kind of having and is the special device of adjusting cracking pressure and the spring-loaded safety valve of opening when the side overvoltage, especially a kind of automatic pressure regulator.
Technical background
At present, domestic pressure regulator valve generally is made up of valve body, valve gap, screw press, pressure adjusting spring, valve body import, valve outlet, spool etc., valve body is provided with pressure regulating cavity, the pressure adjusting spring that is positioned at pressure regulating cavity is determined the suitable pressure rating and the range of regulation of valve, the required spring of the high more valve of pressure is big more, cause the volume of valve body big more, waste material.The sealing width of cloth of spool is generally the cone-shape metallic leak-proof width of cloth, the continuous erosion sealing surface of high-pressure medium during work, and sealing surface is very easily washed away damage by high-pressure medium, and the valve discharge is big, and working life is short.
Summary of the invention
The purpose of this utility model is to overcome that volume in the prior art is big, waste material, working life short deficiency, a kind of automatic pressure regulator is provided, this automatic pressure regulator volume is little, in light weight, override pressure is little, and is highly sensitive, stable working, good seal performance, long service life.
The technological scheme that the utility model technical solution problem adopts is: the utility model is by valve body, valve gap, the valve body import, valve outlet, screw press, compositions such as pressure adjusting spring, valve body is provided with pressure regulating cavity, pressure adjusting spring is positioned at pressure regulating cavity, characteristics are that pressure adjusting spring one end presses through adjusting piston and screw press, the pressure adjusting spring the other end is equipped with the startup piston, between valve body import and valve outlet, be provided with the flashboard seat, on the flashboard seat flashboard is housed, flashboard is connected with the startup piston, its flashboard face is provided with pod apertures, the flashboard seat that is positioned at the valve body entrance point is provided with the guide hole that is connected with the pressure regulating cavity that starts piston base, is provided with connecting tube between the pressure regulating cavity of valve outlet and startup piston head.
Be provided with seal ring between the periphery of adjustment piston and the pressure regulating cavity.
Flashboard is the parallel type flashboard.
The beneficial effects of the utility model are: simple in structure, volume is little, and is in light weight, and override pressure is little, highly sensitive, stable working, good seal performance, long service life.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Accompanying drawing is the utility model embodiment's a main sectional view.
1. screw press among the figure, 2. valve gap, 3. seal ring is 4. adjusted piston, 5. pressure adjusting spring, 6. valve body 7. connecting tube, 8. starts piston, 9. flashboard seat, 10. flashboard, 11. valve body imports, 12. valve outlets, 13. pod apertures, 14. guide holes, 15. pressure regulating cavities.
Embodiment
In the accompanying drawings, automatic pressure regulator is by valve body (6), valve gap (2), valve body import (11), valve outlet (12), screw press (1), pressure adjusting spring compositions such as (5), valve body (6) is provided with pressure regulating cavity (15), pressure adjusting spring (5) is positioned at pressure regulating cavity (15), pressure adjusting spring (5) one ends press with screw press (1) through adjusting piston (4), be provided with seal ring (3) between the periphery of adjustment piston (4) and the pressure regulating cavity (15), pressure adjusting spring (5) the other end is equipped with and starts piston (8), between valve body import (11) and valve outlet (12), be provided with flashboard seat (9), flashboard (10) is housed on the flashboard seat (9), flashboard (10) is the parallel type flashboard, flashboard (10) is connected with startup piston (8), its flashboard face is provided with pod apertures (13), the flashboard seat (9) that is positioned at the valve body entrance point is provided with the guide hole (14) that is connected with the pressure regulating cavity (15) that starts piston (8) bottom, is provided with connecting tube (7) between the pressure regulating cavity (15) at valve outlet (11) and startup piston (8) top.
The sealing mechanism of automatic pressure regulator is made up of flashboard seat (9) that is provided with between valve body import (11) and valve outlet (12) and the flashboard (10) that is installed on the flashboard seat (9), when flashboard (10) is in position in the accompanying drawing, the pod apertures (13) of flashboard (10) lower end is in the lower end of flashboard seat (9), medium promotes flashboard (10), make it to compress mutually with flashboard seat (9), pressure regulator valve is in closed condition; When flashboard (10) moves up, pod apertures (13) and flashboard seat (9) be when interlacing, the valve release.
The adjustment pressure mechanism of this valve is by forming connecting tube (7) between pressure adjusting spring (5), adjustment piston (4), adjustment screw rod (1) and pressure regulating cavity (15) and the valve outlet (12).Connecting tube (7) is that pressure regulating cavity (15) is communicated with valve outlet (12), make the valve outlet medium arrive pressure regulating cavity (15) by connecting tube (7), make startup piston (8) top be subjected to the valve outlet pressure medium, adjust screw press (1), determine pressure regulator valve release numerical value, after valve outlet (12) pressure is greater than this numerical value, help pressure adjusting spring (5) to promote to start piston (8) downwards, valve is closed voluntarily.Therefore starting piston (8) top is subjected to valve outlet pressure medium and the acting in conjunction of pressure adjusting spring pressure, can reduce the pressure adjusting spring size, dwindles body size, alleviates valve weight, improves the nominal pressure of valve.Adjust screw rod (1) but intended valve unload pressure pressure, guarantee that the outlet pressure of valve is constant on certain numerical value.
The starting mechanism of this valve is to finish by starting piston (8), and it can drive flashboard (10) and move up or down, and realizes the open and close of valve.
During work, medium enters valve by valve body import (11), the guide hole (14) that is connected through the pressure regulating cavity (15) with starting piston (8) bottom that is provided with flashboard seat (9) enters pressure regulating cavity (15), pressure medium acts on and starts piston (8) bottom, pressure increase when valve body import medium, after reaching release numerical value, start this moment the suffered valve body import pressure medium in piston (8) bottom greater than the suffered valve outlet pressure medium in top and pressure adjusting spring (5) pressure and, starting piston (8) moves up, driving flashboard (10) moves up, valve is opened release gradually, and medium is flowed through through pod apertures (13) and exported to pipeline.Because outlet end pipeline inside is by Rectifier plate is arranged, the medium that valve draws off can not in time be exported, the pressure medium of outlet end can increase gradually, the interior pressure medium of pressure regulating cavity (15) that starts piston (8) top also can rise gradually, when starting suffered pressure medium in piston (8) top and pressure adjusting spring (5) pressure sum when starting the suffered valve body import pressure medium in piston (8) bottom, start piston (8) and move down, and oppress parallel flashboard (10) and move down, valve is closed gradually.So go round and begin again, the entrance point pressure that can guarantee automatic pressure regulator is steady state value.
Claims (3)
1, a kind of automatic pressure regulator, by valve body, valve gap, the valve body import, valve outlet, screw press, compositions such as pressure adjusting spring, valve body is provided with pressure regulating cavity, pressure adjusting spring is positioned at pressure regulating cavity, it is characterized in that: described pressure adjusting spring one end presses through adjusting piston and screw press, the pressure adjusting spring the other end is equipped with the startup piston, between valve body import and valve outlet, be provided with the flashboard seat, on the flashboard seat flashboard is housed, flashboard is connected with the startup piston, its flashboard face is provided with pod apertures, the flashboard seat that is positioned at the valve body entrance point is provided with the guide hole that is connected with the pressure regulating cavity that starts piston base, is provided with connecting tube between the pressure regulating cavity of valve outlet and startup piston head.
2, a kind of automatic pressure regulator according to claim 1 is characterized in that: be provided with seal ring between the periphery of described adjustment piston and the pressure regulating cavity.
3, a kind of automatic pressure regulator according to claim 1 and 2 is characterized in that: described flashboard is the parallel type flashboard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320107503 CN2665486Y (en) | 2003-12-02 | 2003-12-02 | An automatic pressure regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320107503 CN2665486Y (en) | 2003-12-02 | 2003-12-02 | An automatic pressure regulating valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2665486Y true CN2665486Y (en) | 2004-12-22 |
Family
ID=34342267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320107503 Expired - Fee Related CN2665486Y (en) | 2003-12-02 | 2003-12-02 | An automatic pressure regulating valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2665486Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110410609A (en) * | 2019-08-24 | 2019-11-05 | 江苏大学镇江流体工程装备技术研究院 | A kind of water hammer cancellation element |
-
2003
- 2003-12-02 CN CN 200320107503 patent/CN2665486Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110410609A (en) * | 2019-08-24 | 2019-11-05 | 江苏大学镇江流体工程装备技术研究院 | A kind of water hammer cancellation element |
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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 |