CN103939649B - Self-operated type stop valve - Google Patents

Self-operated type stop valve Download PDF

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Publication number
CN103939649B
CN103939649B CN201410148240.6A CN201410148240A CN103939649B CN 103939649 B CN103939649 B CN 103939649B CN 201410148240 A CN201410148240 A CN 201410148240A CN 103939649 B CN103939649 B CN 103939649B
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China
Prior art keywords
valve
control
valve body
piston
import
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CN201410148240.6A
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Chinese (zh)
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CN103939649A (en
Inventor
金国权
许品芳
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ZHEJIANG FANGZHONG VALVES Co Ltd
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ZHEJIANG FANGZHONG VALVES Co Ltd
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Application filed by ZHEJIANG FANGZHONG VALVES Co Ltd filed Critical ZHEJIANG FANGZHONG VALVES Co Ltd
Priority to CN201410148240.6A priority Critical patent/CN103939649B/en
Publication of CN103939649A publication Critical patent/CN103939649A/en
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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
    • 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
    • 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
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/20—Excess-flow valves
    • F16K17/22—Excess-flow valves actuated by the difference of pressure between two places in the flow line

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Safety Valves (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

The present invention relates to a kind of self-operated type stop valve, including valve body, flap, valve rod, valve gap, a piston cylinder is installed between valve body and valve gap；Mainly installing a spring between piston upper surface and valve gap, piston upper chamber and piston cavity of resorption pass through communicating pipe, control valve and valve body inlet communication；Described control valve is made up of application valve body and control spool, is shaped with control hole in application valve body, is shaped with the first outlet, the second outlet, controls valve import, the first pressure relief opening, the second pressure relief opening on application valve body；Described control valve import is by communicating pipe and valve body inlet communication, and the first outlet connects with piston upper chamber and piston cavity of resorption respectively with the second outlet；Controlling spool adopts manufacture four control pistons on control bar to constitute；By controlling valve, valve body import medium is introduced piston upper chamber or piston cavity of resorption, realize stop valve is opened or closed control, and according to the flow direction of medium in valve channel, control valve import is switched to and connects with valve body intake channel, there is the cutting function of the medium pipeline that two-way circulates。

Description

Self-operated type stop valve
Technical field
The invention belongs to valve field, especially with regard to a kind of stop valve。
Background technology
Stop valve is because of simple in construction, with low cost, and is widely used on the medium conveyance conduit of all fields of national economy as controlling switch, and its structure generally comprises valve body, spool, valve rod, valve gap, drive mechanism。Such as the self-operated type stop valve that the patent No. is ZL201320518094.2, including valve body, valve gap, spool, electromagnetic valve, entrance sleeve assembly and discharge connection assembly, valve gap forms a lumen after fixing with valve body；Spool is dumb-bell shape, and spool is movably arranged on middle intracavity and forms an epicoele sealed with lumen；The bottom surface of spool and the sealing surface of valve body form a sealing pair；Entrance sleeve assembly one end is connected with the inlet cavity of valve body, and the other end is connected with epicoele by electromagnetic valve；Discharge connection assembly one end is connected with the outlet cavity of valve body, and the other end is connected with epicoele by electromagnetic valve；The bottom surface bearing area that the upper surface area of spool contacts with inlet cavity more than spool。The structure that the entrance sleeve assembly of stop valve, discharge connection assembly and electromagnetic valve are formed, makes spool can be realized as the keying of spool under medium pressure itself effect, and relative to electronic, pneumatic stopping valve, its simple in construction, cost are low。But, this self-operated type stop valve is only applicable to the unidirectional medium pipeline of forward circulation, is not suitable for the bi-directional medium pipeline of medium reverse circulated。
Summary of the invention
It is an object of the invention to the shortcoming existed for prior art, it is provided that a kind of self-operated type stop valve suitable in the medium pipeline that two-way circulates。
Technical scheme includes valve body, flap, valve rod, valve gap, it is shaped with valve seat in the valve pocket of valve body, flap lower surface is shaped with the sealing surface cooperated with valve seat, flap upper surface is fixing with valve rod to be connected, installing a piston cylinder between valve body and valve gap, valve rod upper end is fixedly connected with the piston through piston cylinder；Mainly installing a spring between piston upper surface and valve gap, piston upper chamber and piston cavity of resorption pass through communicating pipe, control valve and valve body inlet communication；Described control valve is made up of application valve body and control spool, control hole it is shaped with in application valve body, the application valve body of control hole side is shaped with the first outlet and the second outlet, the application valve body of control hole opposite side is shaped with control valve import and the first pressure relief opening, the second pressure relief opening；Described control valve import is by communicating pipe and valve body inlet communication, and the first outlet connects with piston upper chamber and piston cavity of resorption respectively with the second outlet；Controlling spool adopts manufacture four control pistons on control bar to constitute, four control piston and coordinate with control hole movable sealing, adjacent two control to form annular control chamber between piston end surface, four control to form left annular control chamber, middle annular control chamber and right annular between piston and control hole and control chamber, and control valve import connects with middle annular control chamber；Controlling spool when moving on to left side, the first outlet controls chamber with middle annular and connect, and connects with right annular control chamber while of the second outlet and the second pressure relief opening；Controlling spool when moving on to right side, the second outlet controls chamber with middle annular and connect, and connects with left annular control chamber while of the first outlet and the first pressure relief opening。
In above technical scheme, control to be respectively mounted communicating pipe between valve import and valve body import and export passage, the communicating pipe controlled between valve import and valve body import and export installs three-way switch valve。
In above technical scheme, between the first pressure relief opening and the second pressure relief opening and valve body import and export passage, it is respectively mounted communicating pipe, the communicating pipe between the first pressure relief opening, the second pressure relief opening and valve body import and export is respectively mounted three-way valve。
It is an advantage of the invention that by controlling valve by valve body import medium introducing piston upper chamber or piston cavity of resorption, realize stop valve is opened or closed control, and according to the flow direction of medium in valve channel, control valve import is switched to and connects with valve body intake channel, the medium pipeline that is mountable to two-way circulate uses。
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention。
Fig. 2 is the structural representation controlling valve in Fig. 1 of the present invention。
Detailed description of the invention
Self-operated type stop valve as shown in Figure 1, including valve body 1, flap 2, valve rod 3, valve gap 6, it is shaped with valve seat in the valve pocket of valve body 1, flap 2 lower surface is shaped with the sealing surface cooperated with valve seat, flap 2 upper surface is fixing with valve rod 3 to be connected, installing a piston cylinder 4 between valve body 1 and valve gap 6, valve rod 3 upper end is connected through piston cylinder 4 is fixing with piston 5；Installing a spring 7 between piston 5 upper surface and valve gap 6, piston upper chamber 9 passes through communicating pipe with piston cavity of resorption 10, controls valve 8 and valve body 1 inlet communication；Described control valve 8 is made up of application valve body 8.1 and control spool 8.2, control hole 8.3 it is shaped with in application valve body 8.1, the application valve body 8.1 of control hole 8.3 side is shaped with the first outlet 8.4 and the second outlet 8.5, the application valve body 8.1 of control hole 8.3 opposite side is shaped with control valve import 8.6 and first pressure relief opening the 8.7, second pressure relief opening 8.8；Described control valve import 8.6 is by communicating pipe and valve body 1 inlet communication, first outlet 8.4 exports 8.5 with second and connects with piston upper chamber 9 and piston cavity of resorption 10 respectively, namely the first outlet 8.4 is by connecting with piston upper chamber 9 communicating pipe, and the second outlet 8.5 is by connecting with piston cavity of resorption 10 communicating pipe；Controlling spool 8.2 adopts manufacture four on control bar to control pistons composition, four control piston and coordinate with control hole 8.3 movable sealing, adjacent two control to form annular control chamber between piston end surface, four control to form left annular control chamber 8.9, middle annular control chamber 8.10 and right annular between piston and control hole 8.3 and control chamber 8.11, and control valve import 8.6 connects with middle annular control chamber 8.10；When control spool moves on to left side, first outlet 8.4 controls chamber 8.10 with middle annular and connects, the first outlet 8.4 is made to connect with controlling valve import 8.6, valve body 1 import medium is incorporated into piston upper chamber 9, and the second outlet 8.5 controls chamber 8.11 with right annular with the second pressure relief opening 8.8 and connects simultaneously, pressure medium in piston cavity of resorption 10 is released by the second pressure relief opening 8.8, it is achieved close valve；When control spool moves on to right side, second outlet 8.5 controls chamber 8.10 with middle annular and connects, the second outlet 8.5 is made to connect with controlling valve import 8.6, valve body 1 import medium is incorporated into piston cavity of resorption 10, and the first outlet 8.4 controls chamber 8.9 with left annular with the first pressure relief opening 8.7 and connects simultaneously, realize valve opening, as shown in Figure 2。
Control to be respectively mounted communicating pipe between valve import 8.6 and valve body 1 import and export passage, the communicating pipe controlled between valve import 8.6 and valve body 1 import and export installs three-way switch valve 11, by the switching of three-way switch valve 11, control valve import 8.6 is made to connect with valve body 1 channel media inlet end all the time。
It is respectively mounted communicating pipe between first pressure relief opening 8.7 and the second pressure relief opening 8.8 and valve body 1 import and export passage, communicating pipe between first pressure relief opening the 8.7, second pressure relief opening 8.8 and valve body 1 import and export is respectively mounted three-way valve, by the switching of three-way valve, the first pressure relief opening 8.7 is connected with valve body 1 exit passageway all the time with the second pressure relief opening 8.8。For non-hazardous medium, the first pressure relief opening 8.7 and the second pressure relief opening 8.8 can directly lead to air。
Controlling moving left and right of spool 8.2 can manual operation, it is also possible to Electronic control, pneumatic control or controls of surging, it is also possible to employing Electromagnetic Control。

Claims (3)

1. a self-operated type stop valve, including valve body (1), flap (2), valve rod (3), valve gap (6), installing a piston cylinder (4) between valve body (1) and valve gap (6), valve rod (3) upper end is connected through piston cylinder (4) and piston (5) are fixing；It is characterized in that installing between piston (5) upper surface and valve gap (6) spring (7), piston upper chamber (9) and piston cavity of resorption (10) by communicating pipe, control valve (8) and valve body (1) inlet communication；Described control valve (8) is made up of application valve body (8.1) and control spool (8.2), control hole (8.3) it is shaped with in application valve body (8.1), the application valve body (8.1) of control hole (8.3) side is shaped with the first outlet (8.4) and the second outlet (8.5), the application valve body (8.1) of control hole (8.3) opposite side is shaped with control valve import (8.6) and the first pressure relief opening (8.7), the second pressure relief opening (8.8)；Described control valve import (8.6) is by communicating pipe and valve body (1) inlet communication, and the first outlet (8.4) exports (8.5) with second and connects with piston upper chamber (9) and piston cavity of resorption (10) respectively；Controlling spool (8.2) adopts manufacture four control pistons on control bar to constitute, four control piston and coordinate with control hole (8.3) movable sealing, adjacent two control to form annular control chamber between piston end surface, four control to form left annular control chamber (8.9), middle annular control chamber (8.10) and right annular between piston and control hole (8.3) and control chamber (8.11), and control valve import (8.6) connects with middle annular control chamber (8.10)；When control spool moves on to left side, first outlet (8.4) controls chamber (8.10) with middle annular and connects, and the second outlet (8.5) controls chamber (8.11) with right annular with the second pressure relief opening (8.8) simultaneously and connects；When control spool moves on to right side, second outlet (8.5) controls chamber (8.10) with middle annular and connects, and the first outlet (8.4) controls chamber (8.9) with left annular with the first pressure relief opening (8.7) simultaneously and connects。
2. self-operated type stop valve according to claim 1, it is characterized in that controlling to be respectively mounted communicating pipe between valve import (8.6) and valve body (1) import and export passage, the communicating pipe controlled between valve import (8.6) and valve body (1) import and export installs three-way switch valve (11)。
3. self-operated type stop valve according to claim 1, it is characterized in that being respectively mounted communicating pipe between the first pressure relief opening (8.7) and the second pressure relief opening (8.8) and valve body (1) import and export passage, the communicating pipe between the first pressure relief opening (8.7), the second pressure relief opening (8.8) and valve body (1) import and export is respectively mounted three-way valve。
CN201410148240.6A 2014-04-03 2014-04-03 Self-operated type stop valve Active CN103939649B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410148240.6A CN103939649B (en) 2014-04-03 2014-04-03 Self-operated type stop valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410148240.6A CN103939649B (en) 2014-04-03 2014-04-03 Self-operated type stop valve

Publications (2)

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CN103939649A CN103939649A (en) 2014-07-23
CN103939649B true CN103939649B (en) 2016-06-22

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104879543A (en) * 2015-06-08 2015-09-02 德阳正光机电设备有限公司 Automatic-control constant-pressure throttling valve
CN106051171A (en) * 2016-06-08 2016-10-26 中国船舶重工集团公司第七二五研究所 Pressure self-balanced type stop check valve

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3795255A (en) * 1972-01-10 1974-03-05 Parker Hannifin Corp Load control and holding valve
CN1098431C (en) * 1997-10-13 2003-01-08 赵文轩 leakless safety valve
CN100507330C (en) * 2007-08-09 2009-07-01 山东大学 High volume gas pressure regulating valve
CN201330854Y (en) * 2009-01-08 2009-10-21 中国船舶重工集团公司第七�三研究所 Quick-opening valve with pneumatic drive and electro-explosive drive
CN102011869A (en) * 2010-11-30 2011-04-13 陈建君 Hydraulic automatic stop valve
CN202733099U (en) * 2012-06-27 2013-02-13 正丰阀门集团有限公司 Self-operated flow control valve capable of automatically regulating pressure difference
CN203442264U (en) * 2013-08-23 2014-02-19 大英县大科机械设备制造有限公司 Self-operated check valve
CN203770781U (en) * 2014-04-03 2014-08-13 浙江方众阀门有限公司 Self-powered check valve

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