CN104747743A - Low and medium-pressure pneumatic balanced stop valve - Google Patents
Low and medium-pressure pneumatic balanced stop valve Download PDFInfo
- Publication number
- CN104747743A CN104747743A CN201310731904.7A CN201310731904A CN104747743A CN 104747743 A CN104747743 A CN 104747743A CN 201310731904 A CN201310731904 A CN 201310731904A CN 104747743 A CN104747743 A CN 104747743A
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- CN
- China
- Prior art keywords
- valve
- fixedly connected
- valve body
- piston
- cylinder
- 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
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
Abstract
The invention relates to a low and medium-pressure pneumatic balanced stop valve which comprises a valve body provided with a water inlet channel and a water outlet channel, wherein a valve seat is arranged on the valve body; a sealing gasket is arranged at the contact part of the valve seat and the valve body; a valve clack is fixedly connected to the valve seat. The stop valve also comprises a cylinder seat and a cylinder barrel provided with an upper air source through hole and a lower air source through hole. A piston and a piston rod are arranged in the cylinder barrel. The bottom end of the cylinder barrel is fixedly connected with the valve body. One end of the piston rod is fixedly connected with the piston while the other end of the piston rod is fixedly connected with the valve seat. A guide platform is arranged below the cylinder seat. A guide barrel is arranged on the upper part of the valve clack. The guide platform and the guide barrel are in sealing cup joint. Under the conditions with any pressure difference of a water current medium, the opening and the closing of the stop valve are convenient, free, easy and labor-saving; the integral size of the valve is reduced; and the service life of the valve is prolonged.
Description
Technical field
The present invention relates to the valve rushed in advance in water system of the circulating water of the industries such as metallurgy, oil, electric power and steel rolling mill's milling train cooling water, section cooling water system, high pressure descaling water, specifically a kind of for block, connect and regulate aqueous medium low in calm the anger dynamic balance type stop valve.
Background technique
In the pre-bath water system of the circulation of the industries such as metallurgy, oil, electric power and steel rolling mill's milling train cooling water, section cooling water system, high pressure descaling water, the structure imperfection of now widely used low middle pressure pneumatic stopping valve, there is following deficiency: 1, existing stop valve mostly is cut-off type structure, during valve opening and closing, flap is by the promotion of aqueous medium, operational torque is large, and balance is poor; 2, valve seat, between elastic sealing gasket and flap, be separated type floating connecting structure between piston rod and valve rod, cause flap and valve seat axis not to overlap, rock by the effect of aqueous medium when moving up and down, contact instability with the sealing of valve body, cause the seal failure of valve; 3, flap is without steering capability, and the impact by aqueous medium pressure surge can produce vibration, and seal pressure is unstable, is unsuitable for pressure transient occasion; 4, the overall volume of valve is large, and working life is short.
Summary of the invention
The object of the invention is the deficiency for above-mentioned existing stop valve, provide that a kind of operational torque is little, dynamical balancing is good, valve volume is little, when long service life, sealability are reliable, aqueous medium pressure sharply changes can not vibrative low in calm the anger dynamic balance type stop valve.
For achieving the above object, the present invention's design low in calm the anger dynamic balance type stop valve, comprise the valve body being provided with intake tunnel and exhalant canal, valve seat is provided with above described valve body, the contacting point of described valve seat and valve body is provided with sealing gasket, described valve seat is fixedly connected with flap, also comprise cylinder block and be provided with the cylinder barrel of source of the gas through hole and lower source of the gas through hole, piston and piston rod is provided with in described cylinder barrel, described cylinder barrel bottom is fixedly connected with valve body, described cylinder block is between cylinder barrel bottom and valve body, one end of described piston rod is fixedly connected with piston, the other end is fixedly connected with valve seat, described cylinder block bottom is provided with guide table, the top of described flap is provided with guide cylinder, described guide table and guide cylinder seal and are socketed.
Valve seat of the present invention and the structure for being fixedly connected with between flap, piston rod is used as valve rod simultaneously, piston rod and valve rod unite two into one, guarantee valve seat, flap, elastic sealing gasket, cylinder block overlap with piston axis, make each Open-close sealing surface of contact consistent, contact reproducible with the sealing of valve body, sealing is tight reliable, guarantees valve zero leakage.
The present invention is provided with guide table in cylinder block bottom, the top of flap is provided with guide cylinder, guide table and guide cylinder stuffing box gland connect in succession, cavity between guide table and guide cylinder forms counter balance pocket, forms pressure self-balancing structure, when valve opening, offset aqueous medium pressure, all can ensure under any pressure reduction open-close convenient freely, easily laborsaving, valve overall volume is reduced, extends working life.
Guide table and guide cylinder stuffing box gland connect in succession, make flap itself have the performance of guiding, flap keeps sealing state with cylinder block all the time, can not produce vibration when aqueous medium pressure sharply changes, seal pressure lasting stability, makes the use occasion of valve compression resistance operating mode instability.
Compared with current occurred stop valve, the top of the bottom of cylinder block of the present invention and flap forms counter balance pocket, under the differential pressure conditions of any water flow medium, all can ensure open-close convenient freely, easily laborsaving, valve overall volume is reduced, increases the service life.Valve seat, be fixed connection structure between elastic sealing gasket and flap, and valve rod and piston rod unite two into one, guarantee valve seat, flap, elastic sealing gasket, cylinder block overlap with piston axis, upper and lower centering, thus each Open-close sealing surface of contact is consistent, contact reproducible with the sealing of valve body, sealing is tight reliable, guarantees valve zero leakage.Flap top is guide end, has steering capability, can not produce vibration when aqueous medium pressure sharply changes, seal pressure lasting stability, flap life-span significant prolongation, and then the life-span of whole valve is extended.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
In figure: 1-valve body (1.1-intake tunnel; 1.2-exhalant canal); 2-Cock screw; 3-valve seat; 4-elastic sealing gasket; 5-flap (5.1-guide cylinder); 6-cylinder block (6.1-guide table); 7-piston rod; 8-o shape seal ring; 9-piston; 10-cylinder barrel (10.1-stroke cavity; 10.2-upper source of the gas through hole; 10.3-lower source of the gas through hole).
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail:
To calm the anger in as shown in Figure 1 low dynamic balance type stop valve, comprise the valve body 1 being provided with intake tunnel 1.1 and exhalant canal 1.2, valve seat 3 is provided with above valve body 1, valve seat 3 is provided with sealing gasket 4 with the contacting point of valve body 1, valve seat 3 is fixedly connected with flap 5, also comprise cylinder block 6, the bottom of cylinder block 6 is provided with guide table 6.1, the top of flap 5 is provided with guide cylinder 5.1, guide cylinder 5.1 is positioned at guide table 6.1, sealed by o shape seal ring 8 between guide table 6.1 and guide cylinder 5.1 and be socketed, cylinder head 10 is placed on cylinder block 6, cylinder block 6 is between cylinder barrel 10 bottom and valve body 1, cylinder block 6 by the bottom surface of cylinder barrel 10 and valve body 1 spacing, piston 9 and piston rod 7 is provided with in cylinder barrel 10, one end of piston rod 7 is fixedly connected with piston 9, the other end is through cylinder block 6, after flap 5, be fixedly connected with valve seat 3, the top inner chamber of cylinder barrel 10 is provided with piston 9 stroke cavity 10.1, the upper portion side wall of stroke cavity 10.1 is provided with source of the gas through hole 10.2, the lower sides of cylinder barrel 10 is provided with lower source of the gas through hole 10.3, the lower end of cylinder barrel 10 is fixedly connected with the upper end of valve body 1.Be provided with o shape seal ring 8 between the inwall of piston 9 and cylinder barrel 10, between the end outer wall of piston rod 7 and piston 9, be provided with o shape seal ring 8.
Flap 5 bottom is fixedly connected with valve seat 3 with elastic sealing gasket 4 by Cock screw 2, valve rod and piston rod 7 unite two into one, guarantee valve seat 3, flap 5, elastic sealing gasket 4, cylinder block 6 and piston 9 dead in line, up and down centering, thus each Open-close sealing surface of contact is consistent, contact reproducible with the sealing of valve body 1, sealing is tight reliable, guarantees valve zero leakage.Valve seat 3, there is flexible sealing gasket 4, Cock screw 2, flap 5, cylinder block 6 be positioned at the valve pocket that valve body 1 top is formed, the cavity that guide table 6.1 and guide cylinder 5.1 surround forms counter balance pocket, counter balance pocket can to ensure under any aqueous medium pressure reduction open-close convenient freely, easily laborsaving, valve overall volume is reduced, extends working life.The o shape seal ring 8 arranged between guide table 6.1 and guide cylinder 5.1 makes to remain sealing contact condition between flap 5 and cylinder block 6, can not produce vibration, seal pressure lasting stability when aqueous medium pressure sharply changes.Its life-span significant prolongation, so the life-span of whole valve extended.
Cylinder barrel 10 is arranged on cylinder block 6, and piston 9 is placed in the inner chamber of cylinder barrel 10.Cylinder barrel 10 is provided with upper and lower two place's source of the gas through holes, by external pneumatic actuator, completes the switching motion of valve.Wherein, between piston rod 7 and cylinder block 6, between valve piston bar 7 and piston 9, between cylinder barrel 10 and piston 9, be provided with o shape seal ring 8, guarantee main valve top seal No leakage.
Working principle of the present invention is as follows:
Source of the gas, by after the process of source of the gas process three linked piece, enters the external pneumatic actuator of valve through solenoid valve, controls and regulating valve keying.During valve opening, solenoid valve obtains electric, and source of the gas enters piston 9 cavity of resorption through lower source of the gas through hole 10.3, and promote piston 9 through pneumatic actuator, piston 9 drives piston rod 7 to move upward, and valve seat 3 and valve body 1 are thrown off, and main valve is opened; When closing valve, solenoid valve dead electricity, source of the gas enters piston 9 epicoele through upper source of the gas through hole 10.2, and promote piston 9 through pneumatic actuator and move downward, piston 9 drives piston rod 7 to move downward, and valve seat 3 is contacted with valve body 1, and main valve is closed.
Claims (1)
1. to calm the anger in one kind low dynamic balance type stop valve, comprise the valve body (1) being provided with intake tunnel (1.1) and exhalant canal (1.2), described valve body (1) top is provided with valve seat (3), described valve seat (3) is provided with sealing gasket (4) with the contacting point of valve body (1), described valve seat (3) is fixedly connected with flap (5), also comprise cylinder block (6) and be provided with the cylinder barrel (10) of source of the gas through hole (10.2) and lower source of the gas through hole (10.3), piston (9) and piston rod (7) is provided with in described cylinder barrel (10), described cylinder barrel (10) bottom is fixedly connected with valve body (1), described cylinder block (6) is positioned between cylinder barrel (10) bottom and valve body (1), one end of described piston rod (7) is fixedly connected with piston (9), it is characterized in that: the other end of described piston rod (7) is fixedly connected with valve seat (3), described cylinder block (6) bottom is provided with guide table (6.1), the top of described flap (5) is provided with guide cylinder (5.1), described guide table (6.1) and guide cylinder (5.1) seal and are socketed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310731904.7A CN104747743A (en) | 2013-12-26 | 2013-12-26 | Low and medium-pressure pneumatic balanced stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310731904.7A CN104747743A (en) | 2013-12-26 | 2013-12-26 | Low and medium-pressure pneumatic balanced stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104747743A true CN104747743A (en) | 2015-07-01 |
Family
ID=53587849
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310731904.7A Pending CN104747743A (en) | 2013-12-26 | 2013-12-26 | Low and medium-pressure pneumatic balanced stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104747743A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111810651A (en) * | 2020-07-25 | 2020-10-23 | 浙江中德自控科技股份有限公司 | Dislocation type vortex-removing single-seat regulating valve |
| CN112228567A (en) * | 2019-06-30 | 2021-01-15 | 上海瑞控阀门有限公司 | Double-cutoff self-sealing high-pressure stop valve |
-
2013
- 2013-12-26 CN CN201310731904.7A patent/CN104747743A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112228567A (en) * | 2019-06-30 | 2021-01-15 | 上海瑞控阀门有限公司 | Double-cutoff self-sealing high-pressure stop valve |
| CN111810651A (en) * | 2020-07-25 | 2020-10-23 | 浙江中德自控科技股份有限公司 | Dislocation type vortex-removing single-seat regulating valve |
| CN111810651B (en) * | 2020-07-25 | 2021-08-24 | 浙江中德自控科技股份有限公司 | Dislocation type vortex-removing single-seat regulating valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150701 |
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| WD01 | Invention patent application deemed withdrawn after publication |