CN201241976Y - Novel direct-action type pressure relief valve - Google Patents
Novel direct-action type pressure relief valve Download PDFInfo
- Publication number
- CN201241976Y CN201241976Y CNU2008201219035U CN200820121903U CN201241976Y CN 201241976 Y CN201241976 Y CN 201241976Y CN U2008201219035 U CNU2008201219035 U CN U2008201219035U CN 200820121903 U CN200820121903 U CN 200820121903U CN 201241976 Y CN201241976 Y CN 201241976Y
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- China
- Prior art keywords
- spring
- movable part
- end cap
- valve
- mobile component
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- Expired - Fee Related
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Abstract
The utility model provides a novel direct-action pressure reducing valve, which comprises an end cap, a valve body on the upper portion of the end cap, a mobile component arranged in the valve body, an adjusting spring arranged on the top portion of the mobile component and an adjusting button connected with the top portion of the adjusting spring, wherein a balance spring which elastically upwards props up the mobile component is arranged between the lower end of the mobile component and the end cap. The novel direct-action pressure reducing valve can effectively counteract self weight and frictional force of the mobile component, which improves the sensibility of the valve and lowers the minimum output pressure of an outlet end, and guarantees the rapid resetting of the mobile component.
Description
Technical field
The utility model relates to a kind of novel Directacting reducing valve.
Background technique
Reduction valve adopts the aperture of the open-shut device in the control valve body to regulate the flow of medium, the pressure of medium is reduced, regulate the aperture of open-shut device simultaneously by the effect of downstream pressure, downstream pressure is kept within the specific limits, and spray into cooling water in valve body or behind the valve, the temperature of medium is reduced, and this valve is called decompression desuperheat valve.The characteristics of this valve are under the situation that inlet pressure constantly changes, and keep outlet to listen the pressure and temperature value in certain scope.Reduction valve is an indispensable accessory of pneumatic control valve, and main effect is with the pressure decompression of source of the gas and is stabilized to a definite value, is used for regulating control so that modulating valve can obtain stable source of the gas power.
Directacting reducing valve is complete self-powering type reduction valve, does not need external sensor, is an absolute construction, thereby has the advantage that volume is little, use is most economical, thereby is able to extensive popularization in market.Traditional in the market Directacting reducing valve structure is owing to the frictional force factor that reckons without in movable part self gravitation and the moving fortune process, thereby make the minimum delivery pressure of decompression reach more than the 0.2MPa, sensitivity is not high, movable part can not reset fast, can not satisfy customer demand well.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of novel Directacting reducing valve, can offset the self gravitation and the frictional force of movable part effectively, improve the sensitivity of valve and the minimum delivery pressure of reduction outlet end, guarantee that movable part resets fast.
For solving above-mentioned prior art problems, the utility model adopts following scheme: a kind of novel Directacting reducing valve, comprise end cap, end cap top valve body, be located at valve inner movable part, be located at the movable part top Regulation spring, with the adjusting knob that the Regulation spring top is connected, be provided with the balance spring that pushes up on the movable part elasticity between described movable part lower end and end cap.
As preferably, described end cap is provided with balance spring has been moved the spring guiding groove of stabilization, and the balance spring lower end is installed in the spring guiding groove.
As preferably, described movable part lower end surface is provided with has moved the spring guide pipe of stabilization to balance spring, and the spring guide pipe stretches into the balance spring inner ring.
As preferably, when described Regulation spring does not work, the compression of balance spring pretension.Can apply a pretightening force to sealing pair like this and guarantee sealability.
The utility model is owing to adopted technique scheme, opposite direction in movable part self gravitation direction applies a spring force, can offset the self gravitation and the frictional force of movable part effectively, improve the sensitivity of valve and the minimum delivery pressure of reduction outlet end, guarantee that movable part resets fast.Balance spring pretension compression simultaneously applies the sealability of a pretightening force when guaranteeing that Regulation spring does not work to sealing pair.
Figure of description
Fig. 1 is a structural representation of the present utility model.
Embodiment
As Fig. 1, a kind of novel Directacting reducing valve, comprise end cap 1, end cap 1 top valve body 4, be located at valve body 4 inside movable part 3, be located at movable part 3 tops Regulation spring 5, with the adjusting knob 6 that Regulation spring 5 tops are connected, 1 of described movable part 3 lower ends and end cap are provided with the balance spring 2 that pushes up on movable part 3 elasticity.This opposite direction in movable part self gravitation direction applies a spring force, can offset the self gravitation and the frictional force of movable part effectively, improves the sensitivity of valve and the minimum delivery pressure of reduction outlet end, guarantees that movable part resets fast.Described end cap 1 is provided with balance spring 2 has been moved the spring guiding groove 11 of stabilization, and balance spring 2 lower ends are installed in the spring guiding groove 11.Described movable part 3 lower end surfaces are provided with has moved the spring guide pipe 31 of stabilization to balance spring 2, and spring guide pipe 31 stretches into balance spring 2 inner rings.When described Regulation spring 5 does not work, the compression of balance spring 2 pretensions.Can apply a pretightening force to guarantee sealability to sealing pair like this.
In the operating process, when outlet 7 pressure during less than the active force of Regulation spring 6, movable part 3 moves downward, sealing pair is opened, import 8 end media enter outlet 7 ends, raise thereby export 7 end pressures, finally reach outlet 7 pressure and Regulation spring 6 active force transient equiliblium; When exporting 7 pressure greater than Regulation spring 6 active forces, movable part 3 moves upward, and sealing pair is closed, and reduces thereby export 7 end pressures, finally reaches outlet 7 pressure and Regulation spring 6 force balance.In above-mentioned work cycle, because balance spring 2 has been offset the frictional force of the self gravitation of movable part 3 and itself and valve body 4 fully, thereby guaranteed that the valve working active force has only the active force of outlet 7 end pressures and Regulation spring 5, has guaranteed the sensitivity of valve well.
Claims (3)
1. novel Directacting reducing valve, comprise end cap (1), end cap (1) top valve body (4), be located at the inner movable part (3) of valve body (4), be located at movable part (3) top Regulation spring (5), with the adjusting knob (6) that Regulation spring (5) top is connected, it is characterized in that: be provided with the balance spring (2) that pushes up on movable part (3) elasticity between described movable part (3) lower end and end cap (1).
2. a kind of novel Directacting reducing valve according to claim 1, it is characterized in that: described end cap (1) is provided with balance spring (2) has been moved the spring guiding groove (11) of stabilization, and balance spring (2) lower end is installed in the spring guiding groove (11).
3. a kind of novel Directacting reducing valve according to claim 1, it is characterized in that: described movable part (3) lower end surface is provided with has moved the spring guide pipe (31) of stabilization to balance spring (2), and spring guide pipe (31) stretches into balance spring (2) inner ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201219035U CN201241976Y (en) | 2008-07-23 | 2008-07-23 | Novel direct-action type pressure relief valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201219035U CN201241976Y (en) | 2008-07-23 | 2008-07-23 | Novel direct-action type pressure relief valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201241976Y true CN201241976Y (en) | 2009-05-20 |
Family
ID=40715269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201219035U Expired - Fee Related CN201241976Y (en) | 2008-07-23 | 2008-07-23 | Novel direct-action type pressure relief valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201241976Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105465438A (en) * | 2015-02-17 | 2016-04-06 | 江苏瑞朗博机械设备有限公司 | Decompression valve triggered through pressing rod instability and suitable for low set pressure |
-
2008
- 2008-07-23 CN CNU2008201219035U patent/CN201241976Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105465438A (en) * | 2015-02-17 | 2016-04-06 | 江苏瑞朗博机械设备有限公司 | Decompression valve triggered through pressing rod instability and suitable for low set pressure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090520 Termination date: 20160723 |