CN203743548U - Special pressure reducing and stabilizing valve for fire protection - Google Patents
Special pressure reducing and stabilizing valve for fire protection Download PDFInfo
- Publication number
- CN203743548U CN203743548U CN201320862802.4U CN201320862802U CN203743548U CN 203743548 U CN203743548 U CN 203743548U CN 201320862802 U CN201320862802 U CN 201320862802U CN 203743548 U CN203743548 U CN 203743548U
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- CN
- China
- Prior art keywords
- valve
- valve body
- flap
- barrier film
- spring
- 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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Abstract
The utility model discloses a special pressure reducing and stabilizing valve for fire protection. The special pressure reducing and stabilizing valve is mainly composed of a valve body, a valve seat, a valve clack, a membrane, a valve cover, a spring, a pilot valve, a guide rod, a bottom cover and a filtering cylinder. The filtering cylinder is a cylindrical net cover without a bottom and a cover and is formed by rolling a stainless steel plate with the thickness ranging from 1 mm to 3 mm, and mesh openings with the mesh ranging from 3 to 60 are formed in the periphery of the net cover. An inlet cavity of the valve body is connected with a valve cover cavity through a guide pipe, and the guide pipe is provided with a pressure gage and a needle valve. A filter is arranged before the needle valve, and a ball valve is arranged before the filter. The valve cover cavity is connected with an outlet valve through a guide pipe, the guide pipe is provided with the pilot valve, and an adjusting valve and a pressure gage are arranged behind the pilot valve. The special pressure reducing and stabilizing valve has the advantages that the downstream pressure can be set according to the demands and cannot change along with the upstream pressure or the downstream flow, a filtering structure is integrated, and the special pressure reducing and stabilizing valve is stable and reliable in working and convenient to install and maintain.
Description
Technical field
The utility model relates to valve technology field, specifically the special decompression venting valve of a kind of fire-fighting.
Background technique
Code for fire protection design of buildings need carry out subregion while requiring the bolt mouth place hydrostatic pressure of fire hydrant to exceed 1.0MPa, and to be that fire hydrant mouth place pressure is excessive easily damage the equipment of whole system its subregion reason; In the time that fire hydrant bolt mouth discharge pressure is greater than 0.5MPa, because the reaction force of hydraulic giant is excessive, a people is difficult to operation, need to take measures to reduce stresses.Various reduction valve on market are difficult to be adapted to preferably fire-fighting system, and resistance is large, outlet pressure is unstable for existing of having; Filter forms that the structure length of reduction valve group is large for need installing on pipeline of having, Heavy Weight, be not easy to install; Have due to the type of selecting in fire-fighting system and structure improper, cause that effect of easing stress is poor, the life-span is short, easily accidents caused, impact is used etc., therefore, studies the special decompression venting valve of a kind of novel fire-fighting necessary.
Model utility content
The purpose of this utility model is to provide a kind of integrated filtration and the special decompression venting valve of the reliable fire-fighting of working stability.
The utility model solves the technological scheme that its technical problem adopts: the special decompression venting valve of fire-fighting is mainly by valve body, valve seat, flap, barrier film, valve gap, spring, pilot valve, guide rod, bottom and cartridge filter composition, valve body and valve gap are bolted connection, centre is provided with barrier film valve body and valve gap is separated, valve gap is placed in valve body top, between valve gap and barrier film, form valve cover cavity, in valve cover cavity, be provided with spring, spring bottom contacts with barrier film by spring seat, spring top coordinates with valve gap top, also be provided with relief opening and plug preparation at valve gap top, spring seat, barrier film and flap pass through guide rod, positioning ring and nut are fixed together, guide rod vertically arranges, positioning ring limits flap in guide rod bottom, nut is at guide rod top fixing spring seat, flap is located in valve body, its top contacts with barrier film, part below the self-align ring of guide rod is set in the pilot hole of valve seat, guide rod can drive flap to do in pilot hole, lower movement, flap bottom coordinates with valve seat, be in contact with one another part and be provided with sealing gasket, valve seat and valve body are made as one, and valve body is separated into snout cavity and outlet plenum two-part by valve seat, flap is positioned at outlet plenum, in the snout cavity of valve body, be vertically provided with cartridge filter, described cartridge filter adopts the thick corrosion resistant plate of 1～3mm to roll the cylindrical shape guard of the bottomless uncovered forming, and be equipped with 3～60 object mesh in guard surrounding, cartridge filter upper end coordinates with valve seat, cartridge filter lower end coordinates fixed location with bottom, bottom is fixed by bolt and valve body, and between valve body and bottom, seal with O ring is set.
The snout cavity of described valve body is connected by conduit with valve cover cavity, and on conduit, is provided with pressure gauge and needle value, is provided with filter before needle value, is provided with ball valve before filter; From valve cover cavity to outlet plenum, be also provided with conduit and connect, and be provided with pilot valve on this conduit, after pilot valve, be provided with modulating valve and pressure gauge.
The beneficial effects of the utility model are, the utility model can be set downstream pressure as required, and downstream pressure can not change because upstream pressure changes simultaneously, also can not change downstream pressure because of changes in flow rate after valve, and integrated filtration, working stability is reliable, convenient for installation and maintenance.
Brief description of the drawings
Accompanying drawing 1 is structural representation of the present utility model.
In figure, 1, valve body, 2, snout cavity, 3, valve seat, 4, flap, 5, conduit, 6, ball valve, 7, barrier film, 8, bolt, 9, valve cover cavity, 10, pressure gauge, 11, filter, 12, needle value, 13, valve gap, 14, plug, 15, relief opening, 16, spring, 17, nut, 18, pilot valve, 19, spring seat, 20, conduit, 21, modulating valve, 22, pressure gauge, 23, guide rod, 24, sealing gasket, 25, outlet plenum, 26, positioning ring, 27, pilot hole, 28, bottom, 29, O shape circle, 30, bolt, 31, cartridge filter, 32, mesh.
Embodiment
With regard to accompanying drawing 1, the special decompression venting valve of fire-fighting of the present utility model is described in detail below below.
As shown in Figure 1, the special decompression venting valve of fire-fighting of the present utility model is mainly by valve body 1, valve seat 3, flap 4, barrier film 7, valve gap 13, spring 16, pilot valve 18, guide rod 23, bottom 28 and cartridge filter 31 form, valve body 1 is fastenedly connected by bolt 8 with valve gap 13, centre is provided with barrier film 7 valve body 1 and valve gap 13 is separated, valve gap 13 is placed in valve body 1 top, between valve gap 13 and barrier film 7, form valve cover cavity 9, in valve cover cavity 9, be provided with spring 16, spring 16 bottoms contact with barrier film 7 by spring seat 19, spring 16 tops coordinate with valve gap 13 tops, also be provided with relief opening 15 prepares with plug 14 at valve gap 13 tops, spring seat 19, barrier film 7 and flap 4 are by guide rod 23, positioning ring 26 and nut 17 are fixed together, guide rod 23 vertically arranges, positioning ring 26 limits flap 4 in guide rod 23 bottoms, nut 17 is at guide rod 23 top fixing spring seats 19, flap 4 is located in valve body 1, its top contacts with barrier film 7, the part of the self-align ring of guide rod 23 below 26 is set in the pilot hole 27 of valve seat 3, guide rod 23 can drive flap 4 on the interior work of pilot hole 27, lower movement, flap 4 bottoms coordinate with valve seat 3, be in contact with one another part and be provided with sealing gasket 24, valve seat 3 is made as one with valve body 1, and valve body 1 is separated into snout cavity 2 and outlet plenum 25 two-part by valve seat 3, flap 4 is positioned at outlet plenum 25, at the interior cartridge filter 31 that is vertically provided with of snout cavity 2 of valve body 1, described cartridge filter 31 adopts corrosion resistant plate that 1～3mm is thick to roll the cylindrical shape guard of the bottomless uncovered forming, and be equipped with 3～60 object mesh 32 in guard surrounding, cartridge filter 31 upper ends coordinate with valve seat 3, cartridge filter 31 lower ends coordinate fixed location with bottom 28, bottom 28 is fixing with valve body 1 by bolt 30, and 29 sealings of O shape circle are set between valve body 1 and bottom 30.
The snout cavity 2 of described valve body 1 is connected by conduit 5 with valve cover cavity 9, and on conduit 5, is provided with pressure gauge 10 and needle value 12, is provided with filter 11 before needle value 12, is provided with ball valve 6 before filter 11; Also be provided with conduit 20 from valve cover cavity 9 to outlet plenum 25 and connect, and be provided with pilot valve 18 on this conduit 20, after pilot valve 18, be provided with modulating valve 21 and pressure gauge 22.
Working principle of the present utility model is as follows, water enters from the snout cavity 2 of valve body 1, after filter cylinder 31 filters, by valve seat 3 and be subject to the throttling restriction of flap 4, flow to outlet plenum 25, reduce pressure, another Lu Shuicong outlet plenum 2 passes through conduit 5 through ball valve 6, after filter 11 and needle value 12, enter valve cover cavity 9, enter outlet plenum 25 by conduit 20 through pilot valve 18 and modulating valve 21 by valve cover cavity 9 again, when outlet plenum 25 pressure are time on a declining curve, pilot valve 18 is opened automatically, because needle value 12 apertures are little, be greater than from the water yield of valve cover cavity 9 interior outflows the water yield flowing to through pilot valve 18, cause the pressure decreased in valve cover cavity 9, in valve cover cavity 9, by barrier film 7, the active force of flap 4 is reduced, guide rod 23 drives flap 4 to move up, the overflow section having increased between valve seat 3 and flap 4 amasss, the water yield that flows into outlet plenum 25 increases, make outlet pressure obtain supplementing and maintain on the pressure spot that pilot valve 18 sets, reach pressure-reduced and-regulated effect, when the water consumption of outlet plenum 25 reduces, the pressure of outlet plenum 25 is in rising trend, pilot valve 18 closes a little bit smaller automatically, the outflow water yield in valve cover cavity 9 is reduced, cause the pressure in valve cover cavity 9 to raise, guide rod 23 amasss the overflow section that drives flap 4 to move down and to reduce between valve seat 3 and flap 4, and the water yield that flows into outlet plenum 25 reduces, thereby the pressure that makes outlet plenum 25 still maintains on the pressure spot that pilot valve 18 sets, and plays pressure-reduced and-regulated effect, when outlet plenum 25 is during without water consumption, pilot valve 18 is closed automatically, and valve cover cavity 9 internal pressures increase, and promotes flap 4 and close to valve seat 3.
Claims (4)
1. the special decompression venting valve of fire-fighting is mainly by valve body, valve seat, flap, barrier film, valve gap, spring, pilot valve, guide rod, bottom and cartridge filter composition, valve body and valve gap are bolted connection, centre is provided with barrier film valve body and valve gap is separated, valve gap is placed in valve body top, between valve gap and barrier film, form valve cover cavity, it is characterized in that, in valve cover cavity, be provided with spring, spring bottom contacts with barrier film by spring seat, spring top coordinates with valve gap top, also be provided with relief opening and plug preparation at valve gap top, spring seat, barrier film and flap pass through guide rod, positioning ring and nut are fixed together, flap is located in valve body, its top contacts with barrier film, flap bottom coordinates with valve seat, be in contact with one another part and be provided with sealing gasket, valve seat and valve body are made as one, and valve body is separated into snout cavity and outlet plenum two-part by valve seat, in the snout cavity of valve body, be vertically provided with cartridge filter.
2. the special decompression venting valve of fire-fighting according to claim 1, is characterized in that, flap is positioned at outlet plenum.
3. the special decompression venting valve of fire-fighting according to claim 1, is characterized in that, described cartridge filter adopts the thick corrosion resistant plate of 1～3mm to roll the cylindrical shape guard of the bottomless uncovered forming, and is equipped with 3～60 object mesh in guard surrounding.
4. the special decompression venting valve of fire-fighting according to claim 1, is characterized in that, the snout cavity of described valve body is connected by conduit with valve cover cavity, and on conduit, is provided with pressure gauge and needle value, is provided with filter before needle value, is provided with ball valve before filter; From valve cover cavity to outlet plenum, be also provided with conduit and connect, and be provided with pilot valve on this conduit, after pilot valve, be provided with modulating valve and pressure gauge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320862802.4U CN203743548U (en) | 2013-12-26 | 2013-12-26 | Special pressure reducing and stabilizing valve for fire protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320862802.4U CN203743548U (en) | 2013-12-26 | 2013-12-26 | Special pressure reducing and stabilizing valve for fire protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203743548U true CN203743548U (en) | 2014-07-30 |
Family
ID=51343349
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320862802.4U Expired - Fee Related CN203743548U (en) | 2013-12-26 | 2013-12-26 | Special pressure reducing and stabilizing valve for fire protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203743548U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104295751A (en) * | 2014-09-26 | 2015-01-21 | 苏州巨浪热水器有限公司 | Improved sewage discharge intake valve of water heater structure |
| CN104847941A (en) * | 2015-03-11 | 2015-08-19 | 北京控制工程研究所 | High-resistance non-metal membrane type pressure reducer |
| CN109323042A (en) * | 2018-09-26 | 2019-02-12 | 河北博路天宝石油设备制造有限公司 | A kind of oil equipment is with just tearing valve open |
-
2013
- 2013-12-26 CN CN201320862802.4U patent/CN203743548U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104295751A (en) * | 2014-09-26 | 2015-01-21 | 苏州巨浪热水器有限公司 | Improved sewage discharge intake valve of water heater structure |
| CN104847941A (en) * | 2015-03-11 | 2015-08-19 | 北京控制工程研究所 | High-resistance non-metal membrane type pressure reducer |
| CN109323042A (en) * | 2018-09-26 | 2019-02-12 | 河北博路天宝石油设备制造有限公司 | A kind of oil equipment is with just tearing valve open |
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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: 20140730 Termination date: 20151226 |
|
| EXPY | Termination of patent right or utility model |