CN2287237Y - Pressure reducing and stabilizing valve - Google Patents
Pressure reducing and stabilizing valve Download PDFInfo
- Publication number
- CN2287237Y CN2287237Y CN 96241597 CN96241597U CN2287237Y CN 2287237 Y CN2287237 Y CN 2287237Y CN 96241597 CN96241597 CN 96241597 CN 96241597 U CN96241597 U CN 96241597U CN 2287237 Y CN2287237 Y CN 2287237Y
- Authority
- CN
- China
- Prior art keywords
- valve
- pipeline
- utility
- model
- main
- 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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- Details Of Valves (AREA)
- Control Of Fluid Pressure (AREA)
Abstract
The utility model relates to a pipeline valve, particularly a pressure reducing and stabilizing valve. The utility model is characterized in that a main valve adopts a piston which is provided with a groove, the lower part of a coronal head is connected with a V-shaped mouth, the main valve is connected with a pipeline in the front of the valve and a pipeline in the back of the valve from the outside, the pipeline in the front of the valve is connected in series with a filter and a needle valve via conduit pipes in the front of the valve from an inlet, the pipeline in the back of the valve is composed of conduit pipes in the back of the valve by connecting guide valves in series into a main valve outlet, and the two pipelines are communicated with a cylinder body of the main valve via a three-way pipe to form an adjusting mechanism. The utility model has the structure that a pipe diameter of the pipeline in the front of the valve is smaller than a pipe diameter of the pipeline in the back of the valve. The utility model has the advantages that a throttling pressure reducing period is guided to the down stream of a valve seat, and water flow abrasion and cavitation are reduced. The utility model also has the technical effects that movable pressure and static pressure are reduced and the pressure is stabilized and reduced.
Description
The utility model relates to particularly a kind of decompression venting valve of a kind of pipeline valve.
At present, applied Piston reducing valve is all realized decompression by valve seat or piston hole throttling, and because of its structure is limit, Pressure reducing ratio is little, when Pressure reducing ratio is big, and two reduction valve of then must connecting are shared decompression; Existing reduction valve is finished decompression by the valve seat throttling again mostly, thereby valve seat is subjected to cavitate and water impact is damaged seriously, so that working life is shorter, becomes problem anxious to be solved.
The utility model innovative design goes out and is in series with the controlling mechanism of pilot valve device after a kind of employing is provided with crown head and main valve, thereby the expenditure and pressure process is caused the main valve seat downstream, to avoid the decompression venting valve of current wearing and tearing and cavitation erosion infringement.
Task of the present utility model is finished according to following technical proposals:
The structure of this decompression venting valve mainly includes: the main valve that is constituted by main valve body, valve gap, cylinder body, spring, piston, crown head, and the valve dummy pipe autonomous valve ingress that is external in main valve body is drawn and is serially connected with successively pipeline before the valve of filter, needle value, three-way pipe and valve gap connecting leg and is connected in series three-way pipe, pilot valve successively and is connected to the controlling mechanism that pipeline combines behind the valve in main valve body outlet port by the valve rear tube.Particularly adopted piston to be provided with again to take over a job on groove, the crown head plug to be integral and divide into " V " shape opening, valve dummy pipe caliber is less than the structure of the caliber of valve rear tube.
Pilot valve is a small spring formula diaphragm type reduction valve.
The utility model description of drawings:
Fig. 1 is the structural drawing of the decompression venting valve of the utility model
Among the figure: 1, main valve body 2, crown 3, valve seat 4, piston 5, cylinder body
6, valve gap 7, connecting leg 8, spring 9, needle value 10, filter
11, valve dummy pipe 12, three-way pipe 13, pilot valve 14, valve rear tube
The utility model will be described further with embodiment in conjunction with the accompanying drawings:
The structure of this kind decompression venting valve is as shown in Figure 1: the inlet of main valve and relative the splitting of outlet, have manage in succession 7 valve gap 6 with cylinder body 5 with bolt on main valve body 1, the spring 8 that valve gap connects for 6 times suppresses the piston 4 that is provided with groove again.Cylinder body seal ring, piston packing are respectively at valve gap 4 and cylinder body 5, piston 4 and the sealing of main valve body 1 connecting part.Fixing crown 2 of being equipped with " V " type opening down of the bottom end of piston 4, it is communicated with main valve inlet and outlet with the relative displacement unlatching of valve seat 3.Main valve body 1 inlet side is drawn to be connected in series filter 10, needle value 9 successively and to be communicated with three-way pipe 12 by valve dummy pipe 11 and is constituted pipeline before the valve; The outlet side of main valve body 1 have from three-way pipe 12, after pilot valve 13 draws the valve that the valve rear tube that connects 14 connects pipeline, two pipelines constitute the controlling mechanism of main valve.Valve dummy pipe 11 is littler than the caliber of valve rear tube.Pilot valve 13 is a small spring diaphragm type reduction valve, can subtract dynamic and static pressure.
Using method of the present utility model is: be installed in the supply channel, the pipeline current enter the main valve inlet, the part current are filtered only again through needle value 9 through filter 10 by valve dummy pipe 11, three-way pipe 12 shuntings, part is injected the groove of piston 4 and the cavity of cylinder body 5 from connecting leg 7, another part current under the control of the Pressure reducing ratio setting value aperture of pilot valve 13 in valve rear tube 14 backflow main valves, principle based on spring 8 auxiliary stepped pistons 4, main valve piston 4 is at the differential pressure action bottom offset, cause opening of " V " shape mouth on crown 2 and valve seat 3 thus, close and the size of " V " shape opening, the controlling mechanism that pipeline constituted behind pipeline and the valve before the valve, control main valve inlet and the aperture that is communicated with that exports have been regulated valve seat 3 downstream pressures effectively and have been remained on predefined force value and the pressure-stabilizing water supply that normally reduces pressure.
When downstream pressure dropped to pilot valve 13 setting values, pilot valve 13 was opened, and the press water of piston 4 grooves is then let out the downstream by pilot valve.Because the aperture of needle value 9 is little, and valve dummy pipe 11 is littler than the caliber of valve rear tube 14, so sluicing speed makes the pressure at piston 4 groove positions reduce greater than inlet moisturizing speed thus, the main valve inlet water pressure in piston 4 outsides holds up piston 4, boosts thereby open crown 2 of main valve.When downstream pressure surpasses pilot valve 13 setting values, pilot valve 13 cuts out, and piston 4 groove internal pressure water do not have earial drainage, and piston 4 compresses valve seat 3 cuts off main valve inlet and outlet, treat the decline of downstream water pressure and enter main valve once again that vent flow equals to stablize into the water yield, downstream pressure.
The utility model is compared with prior art, and its advantage is: because the setting of crown head, piston stroke is long, allows valve Open fully, can satisfy the peak flow requirement; There is " V " shape mouth can reduce gradually " V " shape aperture area, reduces piston The sensitivity that stroke changes low discharge, thus " water hammer " infringement that the flow sudden change produces greatly reduced; " V " The shape mouth replaces the valve seat throttling, and throttling process is caused the valve seat downstream, thus protected valve seat avoid high-velocity flow wearing and tearing and The cavitation erosion infringement. Because the setting of pipeline behind pipeline and the valve before the valve, and the valve dummy pipe specific knot littler than valve rear tube caliber Structure has this decompression venting valve concurrently and subtracts dynamic and static pressure and the stable effect that reduces pressure. Economize on resources and save the energy.
Claims (2)
1, a kind of decompression venting valve, include main valve body, valve gap, cylinder body, spring, main valve and controlling mechanism that crown head constitutes, it is characterized in that: said piston is provided with groove, the plug of taking over a job on the said crown head is integral and divides into " V " shape mouth, said controlling mechanism is to draw and be serially connected with successively filter by the valve dummy pipe autonomous valve ingress that is external in main valve body, needle value, pipeline and be connected in series three-way pipe successively before the valve of three-way pipe and valve gap connecting leg by the valve rear tube, pilot valve and after being connected to the valve of main valve body outlet the pipeline assembly form, said valve dummy pipe caliber is less than the caliber of valve rear tube.
2, according to the described decompression venting valve of claim 1, it is characterized in that: said pilot valve is a small spring diaphragm type reduction valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96241597 CN2287237Y (en) | 1996-11-01 | 1996-11-01 | Pressure reducing and stabilizing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96241597 CN2287237Y (en) | 1996-11-01 | 1996-11-01 | Pressure reducing and stabilizing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2287237Y true CN2287237Y (en) | 1998-08-05 |
Family
ID=33915962
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96241597 Expired - Fee Related CN2287237Y (en) | 1996-11-01 | 1996-11-01 | Pressure reducing and stabilizing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2287237Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104235445A (en) * | 2013-06-21 | 2014-12-24 | 上海沪禹泵阀设备有限公司 | Self-operated downstream pressure relief stop valve |
-
1996
- 1996-11-01 CN CN 96241597 patent/CN2287237Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104235445A (en) * | 2013-06-21 | 2014-12-24 | 上海沪禹泵阀设备有限公司 | Self-operated downstream pressure relief stop 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 |