CN2286639Y - Diaphragm type indoor pressure-reducing pressure-regulating fire hydrant - Google Patents
Diaphragm type indoor pressure-reducing pressure-regulating fire hydrant Download PDFInfo
- Publication number
- CN2286639Y CN2286639Y CN 97202910 CN97202910U CN2286639Y CN 2286639 Y CN2286639 Y CN 2286639Y CN 97202910 CN97202910 CN 97202910 CN 97202910 U CN97202910 U CN 97202910U CN 2286639 Y CN2286639 Y CN 2286639Y
- Authority
- CN
- China
- Prior art keywords
- pressure
- valve
- regulating
- fire hydrant
- switch
- 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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- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
The utility model relates to a diaphragm type indoor pressure-reducing and pressure-regulating fire hydrant, mainly composed of a hand wheel, a valve rod, a valve cover, a valve body, a switch valve, a sealing gasket. The valve rod is sheathed with a pressure-regulating sleeve, the lower part of the switch valve covered on a valve seat is in a cover shape, the upper part of the switch valve is provided with a lug boss and is in a rod shape, the top end of the rod is contacted with the lower end of the valve rod, a sealing surface of the switch valve is provided with the sealing gasket, the lug boss on the upper part of the switch valve is fixed with an inner ring of a ring-shaped diaphragm, and an outer ring of the diaphragm is fixed with the valve cover. The utility model has the functions of switching, pressure reducing, and pressure regulating and prevents injury accidents resulting from overpressure. The utility model has the advantages of simple structure, high reliability, low cost, watertight performance, and adjustable water pressure.
Description
The utility model relates to the fire hydrant that a kind of fire-fighting is used.
Existing indoor fire hydrant mainly is made up of handwheel, valve rod, valve gap, valve body, valve seat, switch lobe, sealing gasket, aperture between switch lobe and the valve seat is certain, can not regulate the outlet pressure of fire hydrant, when using in high-rise, the superpressure problem usually occurs, cause the superpressure injury accident.The way that solves generally is to adopt proportion type reducing valve or pressure reducing orifice to advance decompression, because the channel size of above-mentioned two facilities is all fixed, in engineering design can only according to the fixed decompression of product than or not the aperture select the decompression requirement of the required optimum operating condition of inaccessible different levels for use.At present, have a kind of adopt the spring compression valve gap fire hydrant, but because fire hydrant is in stand-by state for a long time, the long-term pressurized of spring can cause spring malfunctioning, giving fights a fire brings hidden danger, is badly in need of improving.
The purpose of this utility model provides the indoor decompression pressure-regulating fire hydrant of a kind of diaphragm type, has switch and decompression voltage regulation function, can conveniently regulate the discharge pressure of fire hydrant, increases the service life, and prevents equipment malfunction.
The technical solution of the utility model is:
The indoor decompression pressure-regulating fire hydrant of this diaphragm type, mainly form by handwheel, valve rod, valve gap, valve body, switch lobe, sealing gasket, it is characterized in that: be with pressure-regulating sleeve on the valve rod, switch lobe bottom is covers shape, covers on valve seat, and switch lobe top is have boss shaft-like, masthead portion contacts mutually with the valve rod lower end, on switch lobe sealing surface sealing gasket is arranged, the boss on switch lobe top and the interior ring of an annular barrier film are fixed, and barrier film outer shroud and valve gap inner periphery are fixed.
Scale is arranged at above-mentioned pressure-regulating sleeve top.
Above-mentioned valve seat inner ring is with fairlead.
The utlity model has switching function and decompression voltage regulation function, when the dextrorotation handwheel, valve rod descends, the clamping switch lobe, and fire hydrant is in closed condition; During left-handed handwheel, valve rod rises, and the switch lobe loses downforce, and hydraulic pressure backs down the switch lobe, realizes supplying water.When the dextrorotation pressure-regulating sleeve, pressure-regulating sleeve rises, and switch lobe lifting height is increased, and valve port opening increases; When left-handed pressure-regulating sleeve, pressure-regulating sleeve descends, and switch lobe lifting height is reduced, and valve port opening reduces; The valve port opening correspondence the size of fire hydrant pressure relief value, and this respective value is shown by the scale on pressure-regulating sleeve top, also scale can be converted to pressure and regulate data.
The utility model has the advantages that: on existing standard fire hydrant basis, increased decompression, voltage regulation function, simple in structure, the reliability height, close property is good, and cost is about 1/5 of a pressure-reducing valve; Adopt barrier film, make water can not enter pressure-regulating sleeve and valve rod, prevented seepy question; Adopt pressure-regulating sleeve to adjust water pressure arbitrarily, the injury accident of having avoided the fire fighter to cause by superpressure.Be applicable to various fire hydrants.
Below in conjunction with drawings and Examples the utility model is described in detail:
Fig. 1 is a structural representation of the present utility model.
As shown in the figure, the indoor decompression pressure-regulating fire hydrant of diaphragm type mainly is made up of handwheel 1, valve rod 3, valve gap 4, valve body 5, valve seat 8 switch lobes 6, sealing gasket 7, is with regulating sleeve 2 on the valve rod 3, and scale is arranged at pressure-regulating sleeve 2 tops.Switch lobe 6 bottoms are covers shape, covers on valve seat 8, and switch lobe 6 tops are have boss shaft-like, masthead portion contacts mutually with valve rod 3 lower ends, on switch lobe 6 sealing surfaces rubber gasket 7 is housed, for tight-closed, valve seat 8 inner rings are with the fairlead 9 a little more than valve seat, cooperate with switch lobe 6.The boss on switch lobe 6 tops and the interior ring of an annular barrier film 10 are fixing, and barrier film 10 outer shrouds and valve gap 4 inner peripherys are fixed.
Claims (3)
1, the indoor decompression pressure-regulating fire hydrant of a kind of diaphragm type, mainly form by handwheel, valve rod, valve gap, valve body, switch lobe, sealing gasket, it is characterized in that: be with pressure-regulating sleeve on the valve rod, switch lobe bottom is covers shape, covers on valve seat, and switch lobe top is have boss shaft-like, masthead portion contacts mutually with the valve rod lower end, on switch lobe sealing surface sealing gasket is arranged, the boss on switch lobe top and the interior ring of an annular barrier film are fixed, and barrier film outer shroud and valve gap inner periphery are fixed.
2, the indoor decompression pressure-regulating fire hydrant of diaphragm type according to claim 1, it is characterized in that: scale is arranged at described pressure-regulating sleeve top.
3, the indoor decompression pressure-regulating fire hydrant of diaphragm type according to claim 1, it is characterized in that: described valve seat inner ring is with fairlead.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97202910 CN2286639Y (en) | 1997-04-03 | 1997-04-03 | Diaphragm type indoor pressure-reducing pressure-regulating fire hydrant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97202910 CN2286639Y (en) | 1997-04-03 | 1997-04-03 | Diaphragm type indoor pressure-reducing pressure-regulating fire hydrant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2286639Y true CN2286639Y (en) | 1998-07-29 |
Family
ID=33923929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97202910 Expired - Fee Related CN2286639Y (en) | 1997-04-03 | 1997-04-03 | Diaphragm type indoor pressure-reducing pressure-regulating fire hydrant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2286639Y (en) |
-
1997
- 1997-04-03 CN CN 97202910 patent/CN2286639Y/en not_active Expired - Fee Related
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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 |