CN207634757U - Pressure-control valve - Google Patents
Pressure-control valve Download PDFInfo
- Publication number
- CN207634757U CN207634757U CN201721773072.5U CN201721773072U CN207634757U CN 207634757 U CN207634757 U CN 207634757U CN 201721773072 U CN201721773072 U CN 201721773072U CN 207634757 U CN207634757 U CN 207634757U
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- China
- Prior art keywords
- valve
- spool
- spring
- wheel shaft
- pressure
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- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
A kind of pressure-control valve, shape is in T bodies, using spring precompressed tightening seal, the mechanism opened along liquid flow path direction, devise embedded circular cone linear sealing structure, usually close, import opens feed flow when reaching predetermined pressure, avoids and accidentally goes out liquid hidden danger, solves the problems, such as that pressure water immerses foam solution when flushing, belongs to foam fire-fighting field；It is made of valve body, spring, hand wheel shaft, handwheel, bolt, locking nut, valve deck, O-ring, spool, sealed taper；Valve deck is tightened in valve body top, and locking nut is rotated on valve deck, and spool outer circle inlays O-ring, valve core upper sleeve spring is assemblied in valve cover hole, and sealed taper is rotated in spool lower end, and on valve deck, bolt is through in hand wheel shaft cross-drilled hole hand wheel shaft spinning；Usually spring push spool is moved down contacts with valve body inlet, keeps sealing；When inlet pressure reaches predetermined value, upper overhead-valve core, spring open feed flow；In more river vcehicular tunnel, white silk makeup is set, harmful influence harbour, offshore oil platform are with a wide range of applications.
Description
Technical field
The utility model is related to one kind in fire-fighting system, and shape is in T bodies, using spring precompressed tightening seal, along liquid
The mechanism that direction is opened is flowed, liquid in-out in a straight line, devises embedded circular cone linear sealing structure；Lead to provided with rinsing to sluice
Road is configured with spool jacking mechanism；Usually spring push spool moves down closing, and import opens feed flow when reaching predetermined pressure；Belong to
In foam fire-fighting field.
Background technology
Current foam hydraulic control valve, using solenoid type, constant error goes out liquid when under inlet pressure fluctuation, endangers
The normal operation of protection zone, spool contact generation bonding, failure with foam solution for a long time；Using hydrodynamic control valve, fire extinguishing
Afterwards when rinsing spool, valve outlet pipe fitting operation, spool causes foam by the foam solution pipeline of the open-top intrusion inlet side of pressure water
The damage that liquid all fails；Current foam hydraulic control valve can not meet the foam fire-fighting of more river vcehicular tunnel, harmful influence harbour
It is required that.
Invention content
In order to solve the problems, such as current foam hydraulic control valve without liquid, spool bonding is gone out, spool is by pressure water top when preventing to rinse
Intrusion foam solution pipeline is opened, the hidden danger of whole foam solution failures is caused；The utility model provides a kind of pressure-control valve, using bullet
Spring precompressed tightening seal, the mechanism opened along liquid flow path direction, devise embedded circular cone linear sealing structure, and it is logical to be provided with flushing sluicing
Road is configured with spool jacking mechanism；By：Valve body (1), lead sealing (3), hand wheel shaft (4), nut (5), handwheel (6), is inserted spring (2)
Sell (7), locking nut (8), valve deck (9), O-ring (10), spool (11), sealed taper (12) composition.Valve deck is tightened on valve body
Portion, locking nut are rotated on valve deck, and spool outer circle inlays O-ring, and valve core upper sleeve spring is assemblied in valve cover hole, seal coning
Gu in spool lower end, on valve deck, bolt is through in hand wheel shaft cross-drilled hole hand wheel shaft spinning；Usually spring push spool moves down and valve
Body inlet contacts, and keeps sealing, closed state at the valve of RC1/8 " discharge openings；When inlet pressure reaches predetermined value, upper top
Spool, spring open feed flow.
The utility model is realized in this way：Pressure-control valve by valve body, spring, lead sealing, hand wheel shaft, nut, handwheel, insert
Pin, locking nut, valve deck, O-ring, spool, sealed taper composition.Shape is in T bodies, using spring precompressed tightening seal, along liquid stream side
To the mechanism of unlatching, embedded circular cone linear sealing structure is devised；It usually closes, import opens feed flow when reaching predetermined pressure；
Valve deck is tightened in valve body top, and locking nut is rotated on valve deck, and spool is assemblied in valve cover hole, and spring is mounted on valve deck and valve
Between core, sealed taper is rotated in spool lower end, and O-ring is embedded in spool outer circle, and handwheel sleeve is consolidated in hand wheel shaft upper end by nut
Fixed, hand wheel shaft spinning is positioned on valve deck by locking nut, and bolt is through in hand wheel shaft cross-drilled hole, and fork uses lead sealing screens；
Pressure-control valve import connects foam solution pipeline, and outlet connects with proportioner；Usually spring push spool move down with valve body into
Liquid mouth contacts, and keeps sealing, closed state at the valve of RC1/8 " discharge openings；When spurting foam, foam pump starts, pressure control
When the inlet pressure of valve reaches predetermined value, upper top valve core spring unlatching foam output liquid is mixed into foam mixing liquid with water and goes out
Fire.
The utility model has the beneficial effects that：Using spring pre-pressing sealing mechanism, inlet pressure will not accidentally go out when fluctuating
Liquid；Embedded circular cone linear sealing structure is devised, anti-foaming liquid bonding is opened sensitive；It is configured with spool and holds out against handwheel axis mechanism,
In flushing spool, valve outlet pipe fitting when remaining foam solution, ensure means of press seals under spool, avoids pressure water and immerse inlet side
Foam solution pipeline, cause foam solution all fail the problem of；The utility model is not necessarily to electric-linked control, realizes pure liquid
Dynamic, constant DP control function, it is simple and reliable.
Description of the drawings
The utility model is further illustrated with reference to the accompanying drawings and examples.
Fig. 1 is the structure sectional view of the utility model.
Fig. 2 is the outline drawing of the utility model.
Fig. 3 is the valve body vertical section figure of the utility model.
Fig. 4 is the valve body drawing in side sectional elevation of the utility model.
Specific implementation mode
By valve body, spring, lead sealing, hand wheel shaft, nut, handwheel, bolt, locking nut, valve deck, O-ring, spool, sealing
Cone composition.Shape is in T bodies, and using spring precompressed tightening seal, the mechanism opened along liquid flow path direction, it is close to devise embedded circular cone line
Seal structure；Provided with drainage gallery is rinsed, it is configured with spool jacking mechanism；Usually close, when inlet pressure reaches 0.5MPa,
Upper overhead-valve core, spring open feed flow fire extinguishing；It solves and accidentally goes out liquid, spool bonding, prevented pressure water when flushing and immersed foam solution
The hidden danger of pipeline；Valve deck is tightened in valve body top, using O-ring end face static seal；Locking nut is rotated on valve deck, outside spool
Circle is inlaid with O-ring and keeps dynamic sealing, valve core upper sleeve spring to be assemblied in valve cover hole with valve cover hole, flexible operation above and below spool
Without bite, it is in pre-compressed state that spring, which is mounted between valve deck and spool, and sealed taper is rotated in spool lower end, and handwheel sleeve is in handwheel
Axis upper end is fixed by nut, and hand wheel shaft spinning is positioned on valve deck by locking nut, and bolt is through in hand wheel shaft cross-drilled hole, bolt
Head uses lead sealing screens；Pressure-control valve import connects foam solution pipeline, and outlet connects with proportioner；Usually RC1/8 " sluices
Closed state at the valve of mouth, spring push spool is moved down to be contacted with valve body inlet, embedded circular cone linear sealing structure, and positioning is close
Envelope is good and long-time contacts with foam solution and is not easy to be bonded；When spurting foam, foam pump starts, the inlet-pressure of pressure-control valve
When power reaches predetermined value, overhead-valve core, spring on inlet hydraulic, spool shift up unlatching, and foam solution is through valve body epicoele, until RC1 "
Screw hole foam output liquid is mixed into foam mixing liquid with water and puts out a fire.Valve body import uses flange, and end face of flange is machined with O-shaped
Ring recess, outlet use RC1 " screw holes, liquid in-out in a straight line, to construct convenient for taking over；Valve body top machined assembly valve deck
Interior straight thread hole, the horizontal inlet of valve body connect with vertical passageway, vertical passageway export processing fillet, the fillet and sealed taper
Keep linear sealing；The horizontal liquid outlet of valve body connects with valve body epicoele, and front end is equipped with RC1/8 " screw holes, to rinse discharge opening, with
Prevent residual foam liquid deposition from causing core assembly bonding, bite failure.To residual foam in spool, valve outlet pipe fitting after fire extinguishing
When liquid is rinsed, the valve of RC1/8 " discharge openings is opened, pulls up bolt, turn handwheel clockwise pushes spool the bottom of to, to prevent
Pressure water immerses foam solution pipeline, and foam solution is caused all to fail；After rinsing well, handwheel is rotated counterclockwise to pushing up, is penetrated slotting
Pin presses upper lead sealing on bolt head；Close the valve of RC1/8 " discharge openings.Bonnet lower outer circle be straight thread, lower lumen be with
The straight hole of spool assembly, valve deck top is the straight thread assembled with locking nut；Air hole is machined in the escape of straight thread,
Ensure that spool moves up flexibly nothing and feels suffocated.Hand wheel shaft lower part is straight thread, and middle part is equipped with the shaft shoulder, and top is respectively polished rod, installation hand
Square toes, the straight thread of wheel drill on polished rod, to install bolt；The shaft shoulder at middle part plays the role of the limit of hand wheel shaft uplink.
Valve body, spool, locking nut and valve deck are QSn4-3 bell metals, and spring uses 17Cr7Ni stainless steels, handwheel
Axis, nut and bolt are 1Cr17Ni7 stainless steels, and O-ring is nitrile rubber, and sealed taper uses polycarbonate.
1) liquid outlet quantity：≥150L/min；
2) rated operating pressure：1.6MPa；
3) rated pressure：3.2MPa；
4) liquid supply pressure is opened：0.5MPa；
5) flow resistance loses：≤0.05MPa；
6) it is applicable in foam solution：AFFF3% aqueous foam-forming solutions；
The utility model in more river vcehicular tunnel, practice that makeup is set, harmful influence harbour, offshore oil platform have and widely answer
Use foreground.
Claims (2)
1. a kind of pressure-control valve, it is characterized in that shape is in T bodies, using spring precompressed tightening seal, the machine opened along liquid flow path direction
Reason, liquid in-out in a straight line, devise embedded circular cone linear sealing structure, are configured with spool jacking mechanism, usually close, into
Mouth opens feed flow when reaching predetermined pressure；By valve body (1), spring (2), lead sealing (3), hand wheel shaft (4), nut (5), handwheel (6),
Bolt (7), locking nut (8), valve deck (9), O-ring (10), spool (11), sealed taper (12) composition；Valve deck is tightened in valve body
Top, locking nut are rotated on valve deck, and spool outer circle inlays O-ring, valve core upper sleeve spring is assemblied in valve cover hole, sealed taper
It is rotated in spool lower end, handwheel sleeve is fixed in hand wheel shaft upper end by nut, and for hand wheel shaft spinning on valve deck, bolt is through hand wheel shaft
In cross-drilled hole, fork uses lead sealing screens；Usually spring push spool is moved down contacts with valve body inlet, keeps sealing, RC1/
8 " closed state at the valve of discharge opening；When inlet pressure reaches predetermined value, upper overhead-valve core, spring open feed flow.
2. pressure-control valve according to claim 1, it is characterized in that valve body, import uses flange, end face of flange to be machined with O
Type ring recess, outlet use RC1 " screw holes, top to machined interior straight thread hole, and front end is equipped with RC1/8 " and bores screw hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721773072.5U CN207634757U (en) | 2017-12-15 | 2017-12-15 | Pressure-control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721773072.5U CN207634757U (en) | 2017-12-15 | 2017-12-15 | Pressure-control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207634757U true CN207634757U (en) | 2018-07-20 |
Family
ID=62864019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721773072.5U Active CN207634757U (en) | 2017-12-15 | 2017-12-15 | Pressure-control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207634757U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110195789A (en) * | 2019-07-12 | 2019-09-03 | 上海瑞泰消防设备制造有限公司 | A kind of ratio mixing valve |
-
2017
- 2017-12-15 CN CN201721773072.5U patent/CN207634757U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110195789A (en) * | 2019-07-12 | 2019-09-03 | 上海瑞泰消防设备制造有限公司 | A kind of ratio mixing valve |
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| GR01 | Patent grant |