CN1118852A - Proportional-controllable pressure reducing valve and fire hydrant - Google Patents
Proportional-controllable pressure reducing valve and fire hydrant Download PDFInfo
- Publication number
- CN1118852A CN1118852A CN 94105158 CN94105158A CN1118852A CN 1118852 A CN1118852 A CN 1118852A CN 94105158 CN94105158 CN 94105158 CN 94105158 A CN94105158 A CN 94105158A CN 1118852 A CN1118852 A CN 1118852A
- Authority
- CN
- China
- Prior art keywords
- piston
- valve
- pressure reducing
- cover plate
- lever
- 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.)
- Pending
Links
Images
Landscapes
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
The pressure reducing valve and fire hydrant are characterized in that it is not only capable of effectively reducing the pressure of running water according to the designed proportion, but also reducing the pressure intensity of calm water effectively, the pressure reducing ratio is adjustable. It is also capable of manually cutting off the water flow to play the role of fire hydrant.
Description
The present invention relates to a kind of reduction valve and decompression fire hydrant; this reduction valve and fire hydrant generally are used for the water supply of tall building and public building and fire-fighting system etc.; to reduce too high pressure on lower floor's water supply and the fire-fighting system, reach protection user sanitary ware, prevent that spray from splashing, reducing purposes such as water tank capacity.
Reduction valve that has earlier and fire hydrant mainly contain two kinds multi-form; one for the orifice-plate type reduction valve and at the pre-installed pressure reducing orifice of fire hydrant; the shortcoming of this reduction valve and fire hydrant is; can only reduce the hydrodynamic pressure of system; and can not reduce hydrostatic pressure; especially when water velocity is low, almost also do not have decompression, thereby the protection of sanitary ware in the system is had significant limitation.Another kind is a proportion type reducing valve, this valve both can reduce hydrodynamic pressure, also can reduce hydrostatic pressure, and the characteristic that reduces active and static pressure in proportion arranged, but this kind proportion type reducing valve only can reduce pressure by a fixed proportion, and is unadjustable, and when Pressure reducing ratio is big, the volume of valve is excessive, installs and uses some inconvenience.
The present invention aims to provide a kind of proportional-controllable pressure reducing valve and fire hydrant, its feature is to have two to three decompression ratios to select for the user on each valve, to reach optimal decompression numerical value, in addition, this valve body is long-pending less, can be to install and bring convenience, one place motive sealing (aforementioned ratio formula reduction valve has two places) is only arranged, reduced the possibility that produces leakage because of motive sealing wearing and tearing, in case and motive sealing wearing and tearing, only need open dust-proof cover during replacing, can take out piston and change new sealing, operation is very easy.
The object of the present invention is achieved like this, strand is adorned a decompression lever in valve body, its two ends are connected with the cover plate of high low pressure subregion and the piston of low pressure area in the valve body respectively, when the valve inlet end pressure increased, opening force increased on the cover plate, and highly pressurised liquid enters the outlet end low pressure area, and low pressure area pressure is also increased thereupon, the stressed increase of low pressure area piston produces outer moving, thereby gives downward moment of cover plate.Long-pending proportional long-pending greater than the cover plate area and the cover plate end arm of force because of the arm of force of piston area and piston end so outlet end pressure is lower than entry end pressure in proportion, makes this valve have the effect of alkali pressure in proportion.According to the work characteristics of fire hydrant, a screw rod is housed on the subregion cover plate, when non-fire takes place, screw off screw rod, the subregion cover plate just is pressed on the valve seat, blocks high-pressure water flow, and low pressure area does not promptly have flow, when fire takes place, the screw rod of only need outwarding winding, this valve is the decompression fire hydrant.In addition, be equipped with two to three axis holes on the decompression lever of this valve and the valve body, when making rotating shaft be positioned at different axis holes, can obtain the effect of easing stress of different proportion easily.
Below in conjunction with accompanying drawing the present invention is further described.
Accompanying drawing is the sectional drawing of a kind of concrete structure of the present invention.
With reference to accompanying drawing, proportional-controllable pressure reducing valve of the present invention and fire hydrant be by valve body 5, subregion cover plate 1, lever 8, compositions such as rotating shaft 9 and piston 13.Pressure subregion cover plate 1 cavity of resorption is the zone of high pressure, and its inlet communicates with high-pressure water pipe.Another termination of valve needs user's pipe of low pressure, is low pressure area.The subregion cover plate 1 that has rubber seal face 4 is connected with lever 8 by bearing pin 2, lever 8 is by rotating shaft 9 and valve body 1 hinge joint, and its other end is by bearing pin 10 and piston 13 sockets that have rubber seal 6, and dust-proof cover also is equipped with in piston 13 tops, falls in the piston cylinder to prevent dust.The axial region of subregion cover plate 1 is sleeved in the slide opening of the valve gap 7 that has seal ring 12, so that the cover plate location is good.Valve gap 7 and screw rod 14 engagements, handwheel 3 is equipped with on screw rod 14 tops, and Zu He effect is when screwing off handwheel 3 and screw rod 14 like this, can block current, plays the decompression fire hydrant.
At work, when low pressure area user pipe discharges water the flow increase, act on and reduce making a concerted effort on the piston 13, be positioned at the subregion cover plate 1 of lever 8 the other ends, because of lever principle disequilibrium aperture increases, the flow that high pressure water enters low pressure area increases, increased the active force on the piston 13 again, it makes the subregion cover plate be tending towards turning down, and this has limited again crosses streamflow, thereby keep a kind of transient equiliblium, make this valve when being zero, all keep stable decompression ratio at any flow.In addition, when with the different axis hole on the rotating shaft 9 insertion levers 8, can obtain the effect of different vacuum ratio, to satisfy customer requirements.
The another kind of form that the present invention realizes is to make piston 13 into elastomer diaphragm, and adds shock mount, and this can improve product decompression precision, but this genomorph protection domain of the present invention.
Claims (4)
1. proportional-controllable pressure reducing valve of forming by valve body 5, subregion cover plate 1, valve gap 7, lever 8 and piston 9 etc., it is characterized in that having formed the ratio depressurized system by subregion cover plate 1, lever 8 and piston 9, and three axis holes are arranged on lever 9, when axle inserted these three different axis holes, this reduction valve just had three kinds of different Pressure reducing ratios.
2. by the proportional-controllable pressure reducing valve of claim 1 defined, it is characterized in that piston 13 goes into hole and piston in cylinder wall location on the housing by the lower end shaft extension, subregion cover plate 1 is by the location of the slide cartridge on the valve gap 7.
3. by the proportional-controllable pressure reducing valve of claim 1 defined, it is characterized in that being being connected of lever 8 and piston 13 realizing by chute on the rod end and the pin 10 that passes the piston rod hole.
4. one kind by valve body 5, subregion cover plate 1, valve gap 7, screw rod 14, the proportional-controllable decompression fire hydrant that handwheel 3 and piston 9 etc. are formed is characterized in that having formed the ratio depressurized system by subregion cover plate 1, lever 8 and piston 9, and three axis holes is arranged on lever 9, when axle inserted these three different axis holes, this decompression fire hydrant just had three kinds of different Pressure reducing ratios.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94105158 CN1118852A (en) | 1994-05-08 | 1994-05-08 | Proportional-controllable pressure reducing valve and fire hydrant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94105158 CN1118852A (en) | 1994-05-08 | 1994-05-08 | Proportional-controllable pressure reducing valve and fire hydrant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1118852A true CN1118852A (en) | 1996-03-20 |
Family
ID=5031934
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94105158 Pending CN1118852A (en) | 1994-05-08 | 1994-05-08 | Proportional-controllable pressure reducing valve and fire hydrant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1118852A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2859635A1 (en) * | 2003-09-11 | 2005-03-18 | Cla Val Europ | Hostile fire defending method for use in mountain zone, involves using waterworks system to supply snow gun, and transporting pressure reduction station by ski until it connects with snow gun of waterworks system |
| CN112081973A (en) * | 2020-09-30 | 2020-12-15 | 上海燃料电池汽车动力系统有限公司 | Lever type pressure reducing valve and regulating and controlling method thereof |
-
1994
- 1994-05-08 CN CN 94105158 patent/CN1118852A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2859635A1 (en) * | 2003-09-11 | 2005-03-18 | Cla Val Europ | Hostile fire defending method for use in mountain zone, involves using waterworks system to supply snow gun, and transporting pressure reduction station by ski until it connects with snow gun of waterworks system |
| CN112081973A (en) * | 2020-09-30 | 2020-12-15 | 上海燃料电池汽车动力系统有限公司 | Lever type pressure reducing valve and regulating and controlling method thereof |
| CN112081973B (en) * | 2020-09-30 | 2022-06-17 | 上海燃料电池汽车动力系统有限公司 | Lever type pressure reducing valve and regulating and controlling method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB2361984A (en) | Dribble flow valve | |
| EP0928730A4 (en) | Braking device | |
| CA2285728A1 (en) | Decorative illuminated water display | |
| WO2001034984A3 (en) | Vehicle braking system comprising a gas hydraulic accumulator | |
| MXPA04006467A (en) | Fluid filter assembly. | |
| CN1118852A (en) | Proportional-controllable pressure reducing valve and fire hydrant | |
| CA2409568A1 (en) | In-line valve arrangement for fire suppression water sprinkler system | |
| CA2021888C (en) | Dynamic seal with flushing protection of static seal | |
| ES2110014T3 (en) | FIRE-FIGHTING EQUIPMENT. | |
| ATE233615T1 (en) | ARRANGEMENT OF SUPPLY, DISCHARGE AND DISTRIBUTION LINES FOR PARTICULAR LIQUID OPERATING MEDIA ON ROLLING STANDS | |
| CA2265328A1 (en) | Liquid level monitor | |
| EP1029560B8 (en) | Mobile pump unit for fire-fighting | |
| US5984315A (en) | Reclamation system for a hydraulic pump system | |
| CN2451765Y (en) | Low-noise pipeline pump | |
| JPH029957A (en) | Pressure tank water supply system | |
| AU2003238396A1 (en) | Pneumatic valve for braking systems | |
| AU2001291806A1 (en) | Hydrodynamic component | |
| CN2346999Y (en) | Multifunctional spherical check valve | |
| KR200332067Y1 (en) | Fire pump assembly of water tank trailer | |
| CN2356170Y (en) | Immersible pump with protector for cable output line | |
| CA2206886A1 (en) | Water-escape device for freeze-prone water conduit | |
| CN2141721Y (en) | Fire hydrant box | |
| CN2324374Y (en) | Distributor for lubricant oil | |
| CN2306799Y (en) | Adjustable pressure fire hydrant | |
| CN2190706Y (en) | Combined multipurpose valve for mini air compressor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |