CN2665484Y - Branch pipe pressure-reducing valve - Google Patents
Branch pipe pressure-reducing valve Download PDFInfo
- Publication number
- CN2665484Y CN2665484Y CN 200320122029 CN200320122029U CN2665484Y CN 2665484 Y CN2665484 Y CN 2665484Y CN 200320122029 CN200320122029 CN 200320122029 CN 200320122029 U CN200320122029 U CN 200320122029U CN 2665484 Y CN2665484 Y CN 2665484Y
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- China
- Prior art keywords
- valve
- spring
- voltage regulation
- pressure
- diaphragm
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- Expired - Fee Related
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Abstract
The utility model belongs to the reducing valve technology field, in particular to a pipe branch reducing valve installed inside the bye-pass of water supply and drainage pipeline for the voltage regulation and the static and dynamic pressure reduction, which comprises a valve, a valve cover and a sealing element. The valve is linked with the valve cover through a bolt. The inside of the valve cover is provided with an adjusting screw, a spring seat as well as a spring. The inlet of the valve front part is provided with an inherent feedback control organ formed from a pipe plug and a valve handle connection component. The pressure before the valve affects little to the pressure after the valve with smooth water flow, high precision of decompression and voltage regulation, as well as excellent effect. With compact structure, small size, excellent sealing and low noise, the utility model can be widely used in the pipelines of drainage, oil and chemical, in particular to the voltage regulation in the bye-pass and the static and dynamic pressure reduction.
Description
Technical field
The utility model belongs to the reduction valve technical field, relates in a kind of bye-pass that is installed in water-feeding ﹠ drainaging pipeline, is used for voltage stabilizing and has not only subtracted static pressure but also subtracted the arm reduction valve of dynamic pressure.
Background technique
In the bye-pass of water-feeding ﹠ drainaging pipeline, usually adopt the internal feedback control mechanism, generally be that pressure feedback mechanism is arranged on the reduction valve rear portion, because upstream pressure is bigger, thereby downstream pressure is subjected to the influence of upstream pressure very big, causes the reduction valve precision low, before its valve, the downstream pressure instability, current are obstructed, influence decompression and voltage regulation result in the bye-pass.
Summary of the invention
The purpose of this utility model is to provide a kind of precision height, flow big, decompression, the arm reduction valve that voltage regulation result is good.
The technical solution adopted in the utility model: a kind of arm reduction valve, comprise valve body, valve gap, Sealing, valve body is by the Bolt Connection valve gap, be provided with adjusting screw rod, spring seat, spring in the valve gap, the anterior inlet end of valve body is provided with the internal feedback control mechanism of plug and valve rod connection part formation.The stem lower portion of described valve rod connection part is by preceding Bolt Connection pilot seal seat, and the pilot seal seat is arranged in the plug, and there are diaphragm, diaphragm pressing plate in valve rod top by the back Bolt Connection, and valve rod is provided with feedback hole, and spring is against on the diaphragm pressing plate.Plug scyewed joint valve body is sealed by 0 RunddichtringO.The diaphragm periphery is pressed between valve body and the valve gap.
The utility model adopts valve rod connection part and plug to form the internal feedback control mechanism, pressure feedback mechanism is arranged on the reduction valve front portion, downstream pressure is subjected to the influence of upstream pressure very little, and current are unobstructed, decompression precision of voltage regulation height, effective, the utility model compact structure, volume is little, good airproof performance, and noise is low, can be widely used in the pipelines, particularly bye-pass such as building water supply and drainage, oil, chemical industry voltage stabilizing and subtract static pressure and subtract dynamic pressure.
Description of drawings
Fig. 1 is the sectional view of the utility model structural representation;
Fig. 2 is the sectional view of valve rod connection part structural representation of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples:
Consult shown in Figure 1ly, a kind of arm reduction valve mainly is made of plug 1, O RunddichtringO 2, valve rod connection part 3, valve body 4, spring 5, valve gap 6, adjusting screw rod 7, spring seat 8 etc.; Its plug 1 constitutes the internal feedback control mechanism with valve rod connection part 3, be arranged on valve body 4 anterior inlet end, plug 1 scyewed joint valve body 4, by 2 sealings of O RunddichtringO, valve body 4 tops are connected with valve gap 6, be provided with adjusting screw rod 7 in the valve gap 6, adjusting screw rod 7 scyewed joint spring seats 8, spring 5 pass adjusting screw rod 7 and be against spring seat 8 and valve rod connection part 3 on.
Consult shown in Figure 2, described valve rod connection part 3 comprises O RunddichtringO 301, pilot seal seat 302, preceding bolt 303, sealing gasket 304, valve rod 305, diaphragm 306, diaphragm pressing plate 307, back bolt 308 etc., its valve rod 305 bottoms connect pilot seal seat 302 by preceding bolt 303, by sealing gasket 304 sealings, pilot seal seat 302 is arranged in the plug 1, by 301 sealings of O RunddichtringO; Valve rod 305 tops are connected with diaphragm 306, diaphragm pressing plate 307 by back bolt 308, and diaphragm 306 peripheries are pressed between valve body 4 and the valve gap 6, and spring 5 is against on the diaphragm pressing plate 307, and valve rod 305 is provided with feedback hole 3051.
Working principle of the present utility model:
Adopt the opening and closing of existing hydraulics control reduction valve, during work, the valve fore pressure acts on sealing gasket 304 and forms upstream pressure, upstream pressure acts on sealing gasket 304 and produces downward active force P1, pressure action produces active force P2 upwards at the diaphragm 306 that links with valve rod 305 behind the valve, form downstream pressure, a part of downstream pressure acts on pilot seal seat 302 by feedback hole 3051 simultaneously, produce pilot seal active force P3 upwards, simultaneously before O RunddichtringO 301 isolating valves with valve after propagation of pressure, act on diaphragm 306 by adjusting screw rod 7 Regulation springs 5 and produce downward active force P4, before the pressure and valve by Regulation spring 5, downstream pressure forms state of equilibrium, during balance, P1+P4=P2+P3, make to form corresponding open degree between pressure feedback control mechanism and the valve body 4, thereby make downstream pressure obtain required value, realize the purpose of decompression.When static, when increasing to preset value gradually along with downstream pressure, pressure feedback control mechanism and valve body 4 closures reach the purpose that subtracts static pressure.When upstream pressure becomes big, P
1Increase, owing to be in sealing state, sealing gasket 304 active areas diminish, and the influence of upstream pressure also diminishes, so downstream pressure is subjected to the influence of upstream pressure also very little, therefore produce well decompression voltage regulation result.
Claims (4)
1. arm reduction valve, comprise valve body, valve gap, Sealing, valve body is by the Bolt Connection valve gap, be provided with adjusting screw rod, spring seat, spring in the valve gap, it is characterized in that the anterior inlet end of valve body (4) is provided with the internal feedback control mechanism of plug (1) and valve rod connection part (3) formation.
2. arm reduction valve according to claim 1, valve rod (305) bottom that it is characterized in that described valve rod connection part (3) connects pilot seal seat (302) by preceding bolt (303), pilot seal seat (302) is arranged in the plug (1), valve rod (305) top is connected with diaphragm (306), diaphragm pressing plate (307) by back bolt (308), valve rod (305) is provided with feedback hole (3051), and spring (5) is against on the diaphragm pressing plate (307).
3. arm reduction valve according to claim 1 is characterized in that plug (1) scyewed joint valve body (4), is sealed by O RunddichtringO (2).
4. arm reduction valve according to claim 2 is characterized in that diaphragm (306) periphery is pressed between valve body (4) and the valve gap (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320122029 CN2665484Y (en) | 2003-11-19 | 2003-11-19 | Branch pipe pressure-reducing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320122029 CN2665484Y (en) | 2003-11-19 | 2003-11-19 | Branch pipe pressure-reducing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2665484Y true CN2665484Y (en) | 2004-12-22 |
Family
ID=34348498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320122029 Expired - Fee Related CN2665484Y (en) | 2003-11-19 | 2003-11-19 | Branch pipe pressure-reducing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2665484Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102466066A (en) * | 2010-11-15 | 2012-05-23 | 烟台龙源电力技术股份有限公司 | Film reducing valve |
| CN104847948A (en) * | 2015-05-07 | 2015-08-19 | 北京航空航天大学 | High-precision automatic control pressure reducer |
| CN108799582A (en) * | 2018-08-30 | 2018-11-13 | 上海艾维科阀门股份有限公司 | Compound pressure reducing valve |
-
2003
- 2003-11-19 CN CN 200320122029 patent/CN2665484Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102466066A (en) * | 2010-11-15 | 2012-05-23 | 烟台龙源电力技术股份有限公司 | Film reducing valve |
| CN102466066B (en) * | 2010-11-15 | 2013-06-19 | 烟台龙源电力技术股份有限公司 | Film reducing valve |
| CN104847948A (en) * | 2015-05-07 | 2015-08-19 | 北京航空航天大学 | High-precision automatic control pressure reducer |
| CN108799582A (en) * | 2018-08-30 | 2018-11-13 | 上海艾维科阀门股份有限公司 | Compound pressure reducing 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 |