CN202182220U - Safety pressure reducing valve - Google Patents
Safety pressure reducing valve Download PDFInfo
- Publication number
- CN202182220U CN202182220U CN2011203246804U CN201120324680U CN202182220U CN 202182220 U CN202182220 U CN 202182220U CN 2011203246804 U CN2011203246804 U CN 2011203246804U CN 201120324680 U CN201120324680 U CN 201120324680U CN 202182220 U CN202182220 U CN 202182220U
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- CN
- China
- Prior art keywords
- valve
- main
- gap
- diaphragm
- safety
- 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
Links
- 230000006837 decompression Effects 0.000 claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 238000009434 installation Methods 0.000 abstract description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- Safety Valves (AREA)
Abstract
The utility model relates to a safety pressure reducing valve, including main valve and decompression pilot valve, the main valve is by the valve body, a valve seat, the valve disc, the valve rod, the valve gap is constituteed, valve disc fixed mounting is on the valve rod, be located the disk seat outlet side, the valve rod passes through the diaphragm and installs between valve body and valve gap, form the control room between diaphragm and the valve gap, install the spring between diaphragm up end in the control room and the valve gap, the control room communicates through a needle valve and main valve inlet channel, through a decompression pilot valve and main valve outlet channel intercommunication, mainly be an installation relief valve on main valve outlet channel, can automatic pressure release when main valve outlet pressure risees to surpassing safe pressure, protect water supply system's safety, its safety protection performance is good. The safety control valve is suitable for a fire-fighting water supply system.
Description
Technical field
The utility model relates to valve field, specifically about a kind of reduction valve.The utility model is applicable to the safety control valve of waterworks for firefighting.
Background technique
Reduction valve mainly is installed in controlled water system, and the control valve outlet pressure is no more than setting value, and its structure generally is made up of main valve and decompression pilot valve; Main valve is made up of valve body, valve seat, valve disc, valve rod, valve gap; Valve disc is fixedly mounted on the valve rod, is positioned at the valve seat outlet side, and valve rod is installed between valve body and the valve gap through diaphragm; Form the control room between diaphragm and the valve gap, mounting spring between the diaphragm upper-end surface in control room and valve gap.The control room is communicated with the main valve inlet passage through a needle-valve, is communicated with the main valve outlet passage through a decompression pilot valve.When main valve outlet passage pressure was higher than decompression pilot valve setting pressure, main valve was closed; When main valve outlet passage pressure is lower than decompression pilot valve setting pressure, main valve open.Controlled the stable of main valve outlet pressure.Its major defect is under the main valve closed condition, when outlet pressure is elevated to above safety pressure, can not release automatically, carries out safety protection but need adorn safety valve in addition, and its safety protection performance is poor.
Summary of the invention
The purpose of the utility model is the shortcoming that exists to existing technology, provide a kind of when the main valve outlet pressure is elevated to above safety pressure relieving pressure automatically, the safety relief valve that the safety protection performance is good.
The technological scheme of the utility model comprises main valve and decompression pilot valve; Main valve is made up of valve body, valve seat, valve disc, valve rod, valve gap, and valve disc is fixedly mounted on the valve rod, is positioned at the valve seat outlet side; Valve rod is installed between valve body and the valve gap through diaphragm; Form the control room between diaphragm and the valve gap, mounting spring between diaphragm upper-end surface in the control room and the valve gap, the control room is communicated with the main valve inlet passage through a needle-valve; Being communicated with the main valve outlet passage through a decompression pilot valve, mainly is that a Decompression valves is installed on the main valve outlet passage.
The utility model advantage be that a Decompression valves is installed on the main valve outlet passage, relieving pressure automatically when the main valve outlet pressure is elevated to above safety pressure, the safety of protection water system, its safety protection performance is good.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Embodiment
Safety relief valve as shown in Figure 1 comprises main valve and decompression pilot valve 5, and main valve is made up of valve body 1, valve seat 18, valve disc 2, valve rod 19, valve gap 14; Valve disc 2 is fixedly mounted on the valve rod 19, is positioned at valve seat 18 outlet sides, and valve rod 19 is installed between valve body 1 and the valve gap 14 through diaphragm 16; Diaphragm 16 centers are installed on the valve disc 2 by platen 17 sealings; The sealing of diaphragm 16 edges is installed between valve body 1 and the valve gap 14, forms control room 3, mounting spring 15 between diaphragm 16 upper-end surfaces in control room 3 and the valve gap 14 between diaphragm 16 and the valve gap 14; Control room 3 is communicated with the main valve inlet passage through a needle-valve 9, is communicated with the main valve outlet passage through a decompression pilot valve 5.Mounting filtering device 10, inlet pressure gauge control ball valve 11 and inlet pressure gauge 12 on the connecting pipe 13 of needle-valve 9 and main valve inlet passage; At decompression pilot valve 5 and mounting ball valve 4 between the main valve outlet passage is communicated with, the installation outlet pressure gauge is controlled ball valve 7 and delivery gauge 8 between decompression pilot valve 5 and ball valve 4.One Decompression valves 6 is installed on the main valve outlet passage, and this Decompression valves 6 is installed on the pipeline between decompression pilot valve 5 and the ball valve 4.
Claims (1)
1. safety relief valve; Comprise main valve and decompression pilot valve (5); Main valve is made up of valve body (1), valve seat (18), valve disc (2), valve rod (19), valve gap (14), and valve disc (2) is fixedly mounted on the valve rod (19), is positioned at valve seat (18) outlet side; Valve rod (19) is installed between valve body (1) and the valve gap (14) through diaphragm (16); Form control room (3) between diaphragm (16) and the valve gap (14), mounting spring (15) between diaphragm (16) upper-end surface in control room (3) and the valve gap (14), control room (3) are communicated with the main valve inlet passage through a needle-valve (9); Be communicated with the main valve outlet passage through a decompression pilot valve (5), it is characterized in that on the main valve outlet passage, installing a Decompression valves (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203246804U CN202182220U (en) | 2011-08-25 | 2011-08-25 | Safety pressure reducing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203246804U CN202182220U (en) | 2011-08-25 | 2011-08-25 | Safety pressure reducing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202182220U true CN202182220U (en) | 2012-04-04 |
Family
ID=46175257
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203246804U Expired - Fee Related CN202182220U (en) | 2011-08-25 | 2011-08-25 | Safety pressure reducing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202182220U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105090532A (en) * | 2015-09-08 | 2015-11-25 | 荆门市广恒机电设备有限公司 | Novel fire fighting control valve |
| CN107847951A (en) * | 2015-07-03 | 2018-03-27 | 杜尔系统股份公司 | Applicator, especially rotary atomizer |
-
2011
- 2011-08-25 CN CN2011203246804U patent/CN202182220U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107847951A (en) * | 2015-07-03 | 2018-03-27 | 杜尔系统股份公司 | Applicator, especially rotary atomizer |
| US10807110B2 (en) | 2015-07-03 | 2020-10-20 | Dürr Systems Ag | Applicator, in particular rotary atomiser |
| US11623232B2 (en) | 2015-07-03 | 2023-04-11 | Dürr Systems Ag | Applicator, in particular rotary atomiser |
| CN105090532A (en) * | 2015-09-08 | 2015-11-25 | 荆门市广恒机电设备有限公司 | Novel fire fighting control valve |
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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: 20120404 Termination date: 20160825 |