CN201288866Y - Flow control valves - Google Patents
Flow control valves Download PDFInfo
- Publication number
- CN201288866Y CN201288866Y CNU2008201542939U CN200820154293U CN201288866Y CN 201288866 Y CN201288866 Y CN 201288866Y CN U2008201542939 U CNU2008201542939 U CN U2008201542939U CN 200820154293 U CN200820154293 U CN 200820154293U CN 201288866 Y CN201288866 Y CN 201288866Y
- Authority
- CN
- China
- Prior art keywords
- piston
- valve
- septum assembly
- valve body
- fire
- 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 provides a flow balancing valve which comprises a valve body, a valve cover and a valve core, wherein the valve core comprises a septum assembly, a piston threaded sleeve, a piston and a piston rod; the septum assembly is connected with the valve body, the piston threaded sleeve is flush mounted in the inner cavity of the valve body below the septum assembly, a foam concentrate cavity is formed between the septum assembly and the valve cover, a fire water cavity is formed between the septum assembly and the piston threaded sleeve, the piston is arranged below the piston threaded sleeve, one end of the piston rod is connected with the piston, and the other end of the piston rod passes through the piston threaded sleeve to be connected with the septum assembly; a foam concentrate inlet connecting tube is arranged on the valve cover, a fire water inlet connecting tube is arranged on the valve body, and a fire water outlet connecting tube is arranged on an exit end of the valve body. The utility model compresses the membrance head and the valve core of the traditional membrance valve into the valve body, has small volume, good reliability and high control accuracy, and can be widely used in the mixing units of various fire-extinguishing foams.
Description
Technical field
The utility model relates to daily necessities, particularly a kind of flow balance valve.
Background technique
Foam extinguishing system is made up of fire water, foam proportioning unit, foam-generating unit etc., is applicable to and puts out first, second, Class C liquid fire.Foam proportioning unit is the nucleus equipment of foam extinguishing system, and its effect is foam dope and fire water to be mixed by a certain percentage form the foam mixing liquid with desirable fire extinguishing effect.The wherein use of flow balance valve can make this ideal obtain fine realization.Gong Ying equilibrium valve volume is big in the market, component are many, processing request is high, poor reliability, control accuracy are low.
The model utility content
The purpose of this utility model in order to solve the problems referred to above that prior art exists, provides the novel flow balance valve that a kind of volume is little, control accuracy is high exactly.
The technical solution of the utility model is: a kind of flow balance valve, comprise valve body, valve gap and spool, and be characterized in that described spool comprises septum assembly, piston swivel nut, piston and piston rod; Septum assembly is connected on the valve body and can moves up and down, the piston swivel nut is inlaid in body cavity and is positioned at the below of septum assembly, between septum assembly and valve gap, form the foam sap cavity, between septum assembly and piston swivel nut, form the fire-fighting water cavity, piston is arranged on the below of piston swivel nut, one end of piston rod is connected on the piston, and the other end passes the piston swivel nut and links to each other with septum assembly, and piston can move up and down under the drive of septum assembly; On valve gap, be provided with the foam solution entrance sleeve that is communicated with the foam sap cavity, on valve body, be provided with the fire water entrance sleeve that is communicated with the fire-fighting water cavity, be provided with the fire water discharge connection of connection outlet plenum at the outlet end of valve body.
Described septum assembly comprises barrier film and two pressing plates, and barrier film is connected on the valve body, the unsettled both sides that are clipped in barrier film of two pressing plates.
Also comprise outlet valve, this outlet valve is installed on the valve gap and with the foam sap cavity and is communicated with.
Flow balance valve of the present utility model has been owing to adopted above technological scheme, have following advantage and and characteristics:
1, because the utility model adopts the alloy steel material manufacturing, have characteristics such as high temperature resistant, high pressure resistant, corrosion-resistant, not fragile, durable in use, can be widely used in the mixing arrangement of various foamite extinguishers;
2, owing on valve gap, be provided with outlet valve, eliminated the gas pulses influence, guaranteed that balance reliably realizes reliable performance;
3, airtight performance is good, and except that relief opening, all the other are closed system, and material does not leak;
4, maintenance is convenient, and the utility model is if dysequilibrium can embody from pressure gauge fast.
5, the accuracy of manufacturing requirement is relatively low, and consumptive material is few.
Description of drawings
Fig. 1 is the sectional structure schematic representation of the utility model flow balance valve;
Fig. 2 is the installment state schematic representation of flow balance valve of the present utility model in pipeline.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
Referring to Fig. 1, flow balance valve of the present utility model comprises valve body 1, valve gap 2 and the spool of being made up of septum assembly 3, piston swivel nut 4, piston 5 and piston rod 6.Septum assembly 3 comprises barrier film 31 and two pressing plates 32, and barrier film 31 is connected on the valve body 1, two pressing plates, the 32 unsettled both sides that are clipped in barrier film.Whole septum assembly 3 can move up and down under the effect of external force.Piston swivel nut 4 is inlaid in body cavity and is positioned at the below of septum assembly, between septum assembly and valve gap, form foam sap cavity 7, between septum assembly and piston swivel nut, form fire-fighting water cavity 8, piston 5 is arranged on the below of piston swivel nut 4, one end of piston rod 6 is connected on the piston, the other end passes the piston swivel nut and links to each other with septum assembly, and piston can move up and down under the drive of septum assembly.On valve gap 2, be provided with the foam solution entrance sleeve 21 that is communicated with the foam sap cavity, on valve body 1, be provided with the fire water entrance sleeve 11 that is communicated with the fire-fighting water cavity, be provided with the fire water discharge connection 12 of connection outlet plenum at the outlet end of valve body.
The utility model also comprises outlet valve 9, and this outlet valve 9 is installed on the valve gap 2 and with the foam sap cavity and is communicated with.
Fig. 2 is the installment state schematic representation of flow balance valve of the present utility model in pipeline.Fire water is connected with threeway 92 by transmission tube 91, and an end of threeway 92 enters the fire-fighting water cavity of equilibrium valve 10, and the other end connects crosspointer pressure gauge 93.Foam solution is connected with threeway 95 by transmission tube 94, and an end of threeway 95 enters equilibrium valve foam sap cavity, and the other end connects crosspointer pressure gauge 93, and the balance of valve just can show intuitively by a crosspointer pressure gauge like this.
But the working procedure principle accompanying drawings of flow balance valve of the present utility model is as follows: fire water enters fire-fighting water cavity 8, water cavity increased pressure in the equilibrium valve, move up at pressure water action lower diaphragm plate assembly 3, and the drive piston moves up, valve inner carrier aperture increases, the valve pressure drop reduces, and the foam dope pressure that enters equilibrium valve foam chamber 7 raises, up to balance.When the pressure of fire water reduced, the pressure of fire-fighting water cavity 8 reduced in the equilibrium valve, and piston moves down under the pressure effect in foam chamber, and aperture reduces, and the equilibrium valve pressure drop increases, and the foam dope pressure that enters equilibrium valve foam chamber reduces, up to balance.Even fire fighting hydraulic pressure exists fluctuation even unexpected variation during work, equilibrium valve is in dynamic balance state all the time, can both guarantee that an amount of foam solution and water enter mixer, form satisfactory foam mixing liquid.
Claims (3)
1. a flow balance valve comprises valve body, valve gap and spool, it is characterized in that: described spool comprises septum assembly, piston swivel nut, piston and piston rod; Septum assembly is connected on the valve body and can moves up and down, the piston swivel nut is inlaid in body cavity and is positioned at the below of septum assembly, between septum assembly and valve gap, form the foam sap cavity, between septum assembly and piston swivel nut, form the fire-fighting water cavity, piston is arranged on the below of piston swivel nut, one end of piston rod is connected on the piston, and the other end passes the piston swivel nut and links to each other with septum assembly, and piston can move up and down under the drive of septum assembly; On valve gap, be provided with the foam solution entrance sleeve that is communicated with the foam sap cavity, on valve body, be provided with the fire water entrance sleeve that is communicated with the fire-fighting water cavity, be provided with the fire water discharge connection of connection outlet plenum at the outlet end of valve body.
2. flow balance valve as claimed in claim 1 is characterized in that: described septum assembly comprises barrier film and two pressing plates, and barrier film is connected on the valve body, the unsettled both sides that are clipped in barrier film of two pressing plates.
3. flow balance valve as claimed in claim 1 is characterized in that: also comprise outlet valve, this outlet valve is installed on the valve gap and with the foam sap cavity and is communicated with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201542939U CN201288866Y (en) | 2008-10-21 | 2008-10-21 | Flow control valves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201542939U CN201288866Y (en) | 2008-10-21 | 2008-10-21 | Flow control valves |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201288866Y true CN201288866Y (en) | 2009-08-12 |
Family
ID=40980549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201542939U Expired - Fee Related CN201288866Y (en) | 2008-10-21 | 2008-10-21 | Flow control valves |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201288866Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103807479A (en) * | 2013-12-30 | 2014-05-21 | 科菲亚重型装备有限公司 | Temperature control valve |
-
2008
- 2008-10-21 CN CNU2008201542939U patent/CN201288866Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103807479A (en) * | 2013-12-30 | 2014-05-21 | 科菲亚重型装备有限公司 | Temperature 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 |
Granted publication date: 20090812 Termination date: 20141021 |
|
| EXPY | Termination of patent right or utility model |