CN2257880Y - Pressure reducing and stabilizing valve - Google Patents
Pressure reducing and stabilizing valve Download PDFInfo
- Publication number
- CN2257880Y CN2257880Y CN 96207836 CN96207836U CN2257880Y CN 2257880 Y CN2257880 Y CN 2257880Y CN 96207836 CN96207836 CN 96207836 CN 96207836 U CN96207836 U CN 96207836U CN 2257880 Y CN2257880 Y CN 2257880Y
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- Prior art keywords
- valve
- diaphragm
- pressure
- utility
- model
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- Expired - Fee Related
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Abstract
The utility model relates to a pressure reducing and stabilizing valve which is composed of a valve body, a valve cap, a diaphragm plate, a diaphragm, a piston, a valve seat and a valve rod. The utility model is characterized in that a guide tube and a needle valve are arranged on the upper reach of the valve body and are communicated with the upper part of the diaphragm, and a communicating tube, a communicating ball valve and a guide valve are arranged on the lower reach of the valve body to the upper part of the diaphragm. The utility model has the advantages that large flow runs very reliably, both dynamic pressure and static pressure are reduced, regardless of inlet pressure fluctuation and outlet flow variation, total output is constant pressure, installation has no orientation requirement, height and weight are small, energy is saved, and construction areas and investment are reduced. The utility model is suitable for the pressure reducing and stabilizing valve of a water supply system.
Description
The utility model belongs to valve, particularly a kind of decompression venting valve.
In delivery (pipe) line, when requiring isobaric water supply, automatic voltage regulation, the standing reduction valve of putting.Reduction valve commonly used at present has diaphragm type, and spring and piston type when generally being used for caliber less than 50mm, can only subtract hydrodynamic pressure, is difficult to solve the occasion of big caliber, big flow.
The purpose of this utility model is, design and produce a kind of decompression venting valve, on the basis of spring barrier film, adopt the downstream pressure feedback mechanism, the pressure of upstream is guided into the top of diaphragm by needle-valve, and the pressure on diaphragm top is by regulating pilot valve, make partial pressure be excreted to the downstream, to determine the different force value in diaphragm top, determining the relative diverse location of piston and disk carriage jointly down, cause different resistances with the auxiliary of spring, thereby obtain the different force value in downstream, realize decompression, voltage stabilizing purpose.
Decompression venting valve of the present utility model, by valve body, valve gap, diaphragm plate, diaphragm, piston, valve seat, valve rod is formed, and it is characterized in that, at valve body provided upstream conduit and needle-valve, is communicated to diaphragm top, establishes in the valve body downstream to be communicated with ball valve, pilot valve connecting tube to diaphragm top.
Pilot valve is a small spring diaphragm type reduction valve.
Using method of the present utility model is, based on the auxiliary stepped piston principle of spring, by the regulating action that main valve piston moves up and down, controls and makes downstream pressure remain on predefined force value, realizes decompression.Fluid is low in and high out, conduit valve before upstream pressure be delivered to diaphragm top equally, by regulating pilot valve and needle-valve, make partial pressure be excreted to the downstream, to determine the different force value in diaphragm top, following, determine the relative position of piston and disk carriage jointly, thereby realize subtracting dynamic pressure with assisting of spring; Pressure increases behind main valve, and when reaching the pilot valve setting, pilot valve cuts out (pilot valve can subtract static pressure), makes main valve diaphragm top pressurising, and the pressure of film piece of writing top equates fully with the pressure of import, moves down thereby promote piston, and main valve is closed, and realizes that main valve subtracts static pressure.The variation of pilot valve piston adjusted position causes the variation of controlled water flow, changes the pressure of piston head thus, makes the main valve piston location, regulates, thereby downstream pressure is maintained on the force value of original setting, reaches pressure stabilization function.
The utility model has the advantages that big flow operation is very reliable; Both subtract dynamic pressure, subtracted static pressure again; No matter the fluctuation of inlet pressure and the variation of rate of discharge are always be output as constant compression force; The requirement of no orientation is installed, and height and weight are less, save the energy, reduce and build area and investment.Be applicable to the decompression venting valve of water supply system.
Below in conjunction with drawings and Examples, the utility model will be further described:
Fig. 1 is the organigram of decompression venting valve
Fig. 2 is the side view of Fig. 1
As seen from the figure, decompression venting valve of the present utility model, by valve body 1, valve gap 2, diaphragm plate 3, diaphragm 4, piston 5, valve seat 6, valve rod 7 is formed, it is characterized in that, at valve body provided upstream conduit 8 and needle-valve 9, be communicated to diaphragm top, establish in the valve body downstream to be communicated with connecting tube and control ball valve 10, pilot valve 11 to diaphragm top.Among the figure, be provided with O RunddichtringO 12 between piston and valve seat, there are spring 13 in diaphragm plate and diaphragm top society, are disk carriage 14 below valve seat.
Claims (2)
1, a kind of decompression venting valve, by valve body, valve gap, diaphragm plate, diaphragm, piston, valve seat, valve rod is formed, and it is characterized in that, at valve body provided upstream conduit and needle-valve, is communicated to diaphragm top, establishes in the valve body downstream to be communicated with ball valve, pilot valve connecting tube to diaphragm top.
2, decompression venting valve as claimed in claim 1 is characterized in that, pilot valve is a small spring diaphragm type reduction valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96207836 CN2257880Y (en) | 1996-04-17 | 1996-04-17 | Pressure reducing and stabilizing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96207836 CN2257880Y (en) | 1996-04-17 | 1996-04-17 | Pressure reducing and stabilizing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2257880Y true CN2257880Y (en) | 1997-07-16 |
Family
ID=33892020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96207836 Expired - Fee Related CN2257880Y (en) | 1996-04-17 | 1996-04-17 | Pressure reducing and stabilizing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2257880Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104565488A (en) * | 2015-01-26 | 2015-04-29 | 马景岗 | Steel-made welding pressure difference control valve |
-
1996
- 1996-04-17 CN CN 96207836 patent/CN2257880Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104565488A (en) * | 2015-01-26 | 2015-04-29 | 马景岗 | Steel-made welding pressure difference control 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 |