CN202756711U - Pressure reduction and stabilization valve - Google Patents
Pressure reduction and stabilization valve Download PDFInfo
- Publication number
- CN202756711U CN202756711U CN 201220349023 CN201220349023U CN202756711U CN 202756711 U CN202756711 U CN 202756711U CN 201220349023 CN201220349023 CN 201220349023 CN 201220349023 U CN201220349023 U CN 201220349023U CN 202756711 U CN202756711 U CN 202756711U
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- China
- Prior art keywords
- valve
- pressure
- rod
- valve body
- valve rod
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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
Links
- 230000006641 stabilisation Effects 0.000 title abstract 5
- 238000011105 stabilization Methods 0.000 title abstract 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- 230000001105 regulatory effect Effects 0.000 claims description 31
- 230000006837 decompression Effects 0.000 claims description 12
- 238000013022 venting Methods 0.000 claims description 11
- 230000000694 effects Effects 0.000 abstract description 8
- 238000007789 sealing Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 3
- 230000000630 rising effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000008235 industrial water Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
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- Control Of Fluid Pressure (AREA)
- Fluid-Driven Valves (AREA)
Abstract
The utility model relates to the technical field of valves, and provides a pressure reduction and stabilization valve which is simple in structure, good in sealing effect, high in accuracy of pressure control, capable of maintaining stable outlet pressure and good in pressure reduction and stabilization effect. The pressure reduction and stabilization valve mainly comprises a main valve, a needle shape valve, a pressure reduction and stabilization guide valve and a pressure gage. The main valve comprises a valve body, a valve cover, a valve clack, a small valve disk and a valve rod. The valve body is provided with a water inlet channel and a water outlet channel, and a valve seat is arranged at the position of the valve body located at the junction between the water inlet channel and the water outlet channel. A valve port communicating the water inlet channel and the water outlet channel is arranged on the valve seat. The valve cover is arranged on the upper portion of the valve body. The valve rod is arranged inside the valve body through an automatic water pressure control device in an up-down moving mode. The valve clack and the small valve disk are arranged on the lower portion of the valve rod, and are arranged on the valve port of the valve body in an openable and closable mode through the up-down movement of the valve rod. A sealing ring is arranged between the small valve disk and the valve rod or between the valve clack and the valve rod.
Description
Technical field
The utility model relates to valve technology field, relates in particular to a kind of decompression venting valve.
Background technique
Decompression venting valve also claims the mode reduction valve, is that a kind of medium self-energy that utilizes is regulated intelligent type valve with pilot line pressure.Be mainly used in domestic water, fire supply and other industrial water supply systems, existing decompression venting valve, mainly comprise main valve, needle type valve, the pressure-reduced and-regulated pilot valve, pressure gauge, described main valve comprises valve body, valve gap, flap, little valve disc and valve rod, described valve body is provided with intake tunnel and exhalant canal, the adjacent place of the friendship of described valve body between intake tunnel and exhalant canal is provided with valve seat, described valve seat is provided with a valve port that is communicated with intake tunnel and exhalant canal, described valve gap is located at valve body top, described valve rod is contained in the valve body in the mode that moves up and down by automatic water pressure control device, described flap and little valve disc are located at the bottom of valve rod and moving up and down on the valve port of being located at opening or closing described valve body by valve rod, described automatic water pressure control device is to be provided with diaphragm between described valve gap and valve body, described diaphragm top is provided with pressing plate, be provided with control spring between described pressing plate and the valve gap, described diaphragm and pressing plate are bolted on the upper end of valve rod, the below that the periphery of described valve rod is positioned at diaphragm also is provided with valve disc, forms the main valve control room between described pressing plate and the valve gap; Described needle type valve connects the intake tunnel of main valve and the main valve control room of main valve by conduit, described pressure-reduced and-regulated pilot valve is communicated with the exhalant canal of main valve body and the main valve control room of main valve by conduit, for convenient control, also be connected with ball valve between the exhalant canal of described pressure-reduced and-regulated pilot valve and main valve, also be connected with pressure gauge on the exhalant canal for the accurate described main valve of pressure of control pipeline, when the main valve body feed-water end feeds water, water flows through needle type valve and enters the main valve control room, and outlet pressure is applied on the pressure-reduced and-regulated pilot valve by conduit.When outlet pressure was higher than pressure-reduced and-regulated pilot valve spring setting value, the pressure-reduced and-regulated pilot valve cut out.The main valve control room stops draining, and main valve control room internal pressure rising this moment is also closed main valve, and outlet pressure no longer raises.When main valve exhalant canal pressure dropped to pressure-reduced and-regulated pilot valve spring setting pressure, the pressure-reduced and-regulated pilot valve was opened, and the control room is draining downstream.Because pressure-reduced and-regulated loaded pilot system water displacement is greater than the inflow of needle type valve, main valve control room pressure drop, intake tunnel pressure are opened main valve, and under steady state, the control room intakes, draining is identical, and the main valve aperture is constant, and outlet pressure is stable.
Above-mentioned decompression venting valve is by regulating the pressure-reduced and-regulated pilot valve, can regulate the outlet pressure of main valve, outlet pressure is not because of inlet pressure, the variation of inlet flow rate and changing, safely and reliably outlet pressure is maintained on the setting value, and can regulate as required setting value to reach the purpose of decompression, its stable performance, safe and reliable, install easy to adjust, long service life, but, do not adopt effective seal approach between the valve rod of above-mentioned pressure-reduced and-regulated pilot valve and the little valve disc, in the situation when long-term the use, can cause valve inleting water passage and main valve control room being communicated with to valve, so that the pressure of pressure-reduced and-regulated pilot valve control inaccuracy can not keep stable outlet pressure, the pressure-reduced and-regulated effect is unreliable.
Summary of the invention
Therefore, for above-mentioned problem, the utility model proposes a kind of simple in structure, good sealing effect, pressure control accuracy high, can keep the stable effective decompression venting valve of outlet pressure, pressure-reduced and-regulated.
For achieving the above object, the utility model has adopted following technological scheme: a kind of decompression venting valve, mainly comprise main valve, needle type valve, the pressure-reduced and-regulated pilot valve, pressure gauge, described main valve comprises valve body, valve gap, flap, little valve disc and valve rod, described valve body is provided with intake tunnel and exhalant canal, the adjacent place of the friendship of described valve body between intake tunnel and exhalant canal is provided with valve seat, described valve seat is provided with a valve port that is communicated with intake tunnel and exhalant canal, described valve gap is located at valve body top, described valve rod is contained in the valve body in the mode that moves up and down by automatic water pressure control device, described flap and little valve disc are located at the bottom of valve rod and by the moving up and down on the valve port of being located at opening or closing described valve body of valve rod, are provided with seal ring between described little valve disc and the valve rod or between flap and the valve rod.
By adopting the aforementioned techniques scheme, the beneficial effects of the utility model are: compare with existing decompression venting valve, this Novel pressure-reducing pressure maintaining valve is having additional seal ring between little valve disc and the valve rod or between flap and the valve rod, so that the sealing effect between flap and the valve rod is better, prevent that the valve inleting water passage is communicated with the main valve control room, make the pressure control of pressure-reduced and-regulated pilot valve more accurate, can keep stable outlet pressure, the pressure-reduced and-regulated effect is more reliable.
Description of drawings
Fig. 1 is the utility model embodiment's structural representation.
Embodiment
Now with embodiment the utility model is further specified by reference to the accompanying drawings.
With reference to figure 1, a kind of decompression venting valve mainly comprises main valve, needle type valve 2, pressure-reduced and-regulated pilot valve 3, pressure gauge 4, wherein:
Described main valve comprises valve body 11, valve gap 12, flap 13, little valve disc 14 and valve rod 15, described valve body 1 is provided with intake tunnel 111 and exhalant canal 112, the adjacent place of the friendship of described valve body 1 between intake tunnel 111 and exhalant canal 112 is provided with valve seat 113, described valve seat 113 is provided with a valve port that is communicated with intake tunnel 111 and exhalant canal 112, described valve gap 12 is located at valve body 11 tops, described valve rod 15 is contained in the valve body 11 in the mode that moves up and down by automatic water pressure control device, described flap 13 and little valve disc 14 are located at the bottom of valve rod 15 and moving up and down on the valve port of being located at opening or closing described valve body 11 by valve rod 15 from bottom to top, be provided with seal ring 16 between described little valve disc 14 and the valve rod 15, described automatic water pressure control device is to be provided with diaphragm 17 between described valve gap 12 and valve body 11, described diaphragm 17 tops are provided with pressing plate 18, be provided with control spring 19 between described pressing plate 18 and the valve gap 12, described diaphragm 17 and pressing plate 18 are fixed on the upper end of valve rod 15 by bolt 5, the below that the periphery of described valve rod 15 is positioned at diaphragm 17 also is provided with valve disc 14', forms main valve control room A between described pressing plate 18 and the valve gap 12.
Described needle type valve 2 is communicated with the intake tunnel 111 of main valve and the main valve control room A of main valve by conduit, described pressure-reduced and-regulated pilot valve 3 is communicated with the exhalant canal 112 of main valve and the main valve control room A of main valve by conduit, for convenient control, also be connected with ball valve 6 between the exhalant canal 112 of described pressure-reduced and-regulated pilot valve 3 and main valve, also be connected with pressure gauge 4 on the exhalant canal 112 for the accurate described main valve of pressure of control pipeline, when the valve body of main valve feed-water end feeds water, water flows through needle type valve 2 and enters main valve control room A, and outlet pressure is applied on the pressure-reduced and-regulated pilot valve 3 by conduit.When outlet pressure was higher than pressure-reduced and-regulated pilot valve 3 spring setting value, pressure-reduced and-regulated pilot valve 3 cut out.Main valve control room A stops draining, and main valve control room A internal pressure rising this moment is also closed main valve, and outlet pressure no longer raises.When main valve exhalant canal pressure dropped to pressure-reduced and-regulated pilot valve 3 springs 31 setting pressure, pressure-reduced and-regulated pilot valve 3 was opened, and the control room is draining downstream.Because pressure-reduced and-regulated pilot valve 3 System drainage amounts are greater than the inflow of needle type valve 2, main valve control room A pressure drop, intake tunnel 111 pressure are opened main valve, and under steady state, main valve control room A is intake, draining is identical, and the main valve aperture is constant, and outlet pressure is stable.
Compare with existing decompression venting valve, this Novel pressure-reducing pressure maintaining valve is having additional seal ring between little valve disc and the valve rod or between flap and the valve rod, so that the sealing effect between flap and the valve rod is better, prevent that the valve inleting water passage is communicated with the main valve control room, make the pressure control of pressure-reduced and-regulated pilot valve more accurate, can keep stable outlet pressure, the pressure-reduced and-regulated effect is more reliable.
Also can between flap and valve rod, be provided with seal ring based on aforementioned techniques scheme the utility model, can realize the purpose of this utility model equally.
Although specifically show and introduced the utility model in conjunction with preferred embodiment; but the those skilled in the art should be understood that; within not breaking away from the spirit and scope of the present utility model that appended claims limits; can make a variety of changes the utility model in the form and details, be the utility model protection domain.
Claims (1)
1. decompression venting valve, mainly comprise main valve, needle type valve, the pressure-reduced and-regulated pilot valve, pressure gauge, described main valve comprises valve body, valve gap, flap, little valve disc and valve rod, described valve body is provided with intake tunnel and exhalant canal, the adjacent place of the friendship of described valve body between intake tunnel and exhalant canal is provided with valve seat, described valve seat is provided with a valve port that is communicated with intake tunnel and exhalant canal, described valve gap is located at valve body top, described valve rod is contained in the valve body in the mode that moves up and down by automatic water pressure control device, described flap and little valve disc are located at the bottom of valve rod and by the moving up and down on the valve port of being located at opening or closing described valve body of valve rod, are it is characterized in that: be provided with seal ring between described little valve disc and the valve rod or between flap and the valve rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220349023 CN202756711U (en) | 2012-07-18 | 2012-07-18 | Pressure reduction and stabilization valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220349023 CN202756711U (en) | 2012-07-18 | 2012-07-18 | Pressure reduction and stabilization valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202756711U true CN202756711U (en) | 2013-02-27 |
Family
ID=47735895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220349023 Expired - Fee Related CN202756711U (en) | 2012-07-18 | 2012-07-18 | Pressure reduction and stabilization valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202756711U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108561755A (en) * | 2018-06-28 | 2018-09-21 | 苏州艾尔泰流体控制有限公司 | A kind of pressure management valve and water supply pipline system |
-
2012
- 2012-07-18 CN CN 201220349023 patent/CN202756711U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108561755A (en) * | 2018-06-28 | 2018-09-21 | 苏州艾尔泰流体控制有限公司 | A kind of pressure management valve and water supply pipline system |
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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 |
Granted publication date: 20130227 Termination date: 20150718 |
|
| EXPY | Termination of patent right or utility model |