CN103899807A - Low-maintenance type pressure relief/holding valve with spring arranged externally - Google Patents

Low-maintenance type pressure relief/holding valve with spring arranged externally Download PDF

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Publication number
CN103899807A
CN103899807A CN201410161118.2A CN201410161118A CN103899807A CN 103899807 A CN103899807 A CN 103899807A CN 201410161118 A CN201410161118 A CN 201410161118A CN 103899807 A CN103899807 A CN 103899807A
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China
Prior art keywords
valve
spring
plate
type pressure
maintenance type
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CN201410161118.2A
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Chinese (zh)
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CN103899807B (en
Inventor
汪班本
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ANHUI TONGDU FLOW TECHNOLOGY Co Ltd
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ANHUI TONGDU FLOW TECHNOLOGY Co Ltd
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Priority to CN201410161118.2A priority Critical patent/CN103899807B/en
Publication of CN103899807A publication Critical patent/CN103899807A/en
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/04Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
    • F16K17/0413Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded in the form of closure plates
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/04Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
    • F16K17/06Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with special arrangements for adjusting the opening pressure
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/164Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side and remaining closed after return of the normal pressure

Abstract

The invention discloses a low-maintenance type pressure relief/holding valve with a spring arranged externally. The low-maintenance type pressure relief/holding valve with the spring arranged externally comprises a valve body, a valve plate, a valve rod and a valve seat, wherein the top of the valve seat is fixedly connected with an external spring mechanism, and the lateral surface of the valve body is fixedly connected with an oil pressure inner circulation pipeline system. The low-maintenance type pressure relief/holding valve with the spring arranged externally has the advantages that the external spring mechanism is convenient to operate and does not make direct contact with water, sewage and organics, the service life of the spring is prolonged, and maintenance expenses are reduced; meanwhile, the oil pressure inner circulation pipeline system formed by a first ball valve, a second ball valve, a diaphragm valve, a flow adjustment valve, a pressure meter and an oil pressure pipeline prevents a piston cylinder from being blocked by sewage, impurities or organics entering the piston cylinder, and prolongs the service life of the piston cylinder; the low-maintenance type pressure relief/holding valve with the spring arranged externally can be used for a long time under any serious conditions with sand wind, sewage or organic impurities, and the maintenance cost is low; an adjustment screw rod and the valve rod are eccentric, so that the valve plate inclines towards one side when being lifted, a better flow stabilization function is achieved, and impact force to the inside of the valve body from water flow is lowered.

Description

The low maintenance type pressure release/holding valve of external spring
Technical field
The present invention relates to pressure release holding valve, relate in particular to the low maintenance type pressure release/holding valve of external spring.
Background technique
Decompression valves is by main valve, pressure release/hold and press pilot valve needle-valve, ball valve, micro-shape filter and pressure gauge to form waterpower control adapter system.Utilize hydraulic automatism operation, can make Decompression valves with being used as again holding valve.At present, pressure release holding valve is mainly used in tall building, on other water supply and sewerage pipelines such as fire supply system or his organic material pipeline, sewage pumping station pipeline.While being used as Decompression valves: in the time that pressure release/hold presses pilot valve to be adjusted into pressure release state, water is by needle-valve, main valve control room, ball valve A, pressure release/hold and press pilot valve, ball valve B to flow to outlet, and now main valve is in opening state.In the time that inlet pressure exceedes pressure release/hold and presses the safety value that pilot valve sets, pressure release pilot valve can be opened automatically, emits part water by ball valve C, makes pipeline pressure release.In the time that pressure returns to safety value, Decompression valves cuts out automatically.While making Decompression valves, each ball valve is often opened.While being used as holding valve: in the time that pressure release/hold presses pilot valve to be adjusted into hold pressure condition, as long as main valve import hydraulic pressure is lower than pilot valve setting value, pilot valve cuts out.Boost in major control chamber, main valve is closed.In the time that main valve upstream pressure of supply water exceedes pilot valve setting pressure, to hold and press pilot valve just can open, the water in control room drains into outlet through ball valve, and step-down main valve in control room is opened, and water supply start, has kept upstream hydraulic pressure.Do the holding valve used time, ball valve C is normally closed or change with plug.To be current mostly enter cylinder body or diaphragm epicoele by pilot valve to the control of existing pressure release holding valve stops the open degree of piston and diaphragm and regulate the opening degree of valve plate to carry out pressure release and hold pressure.As Chinese patent notice of authorization, CN2480642Y discloses a kind of Double-cavity liquid control pressure releasing/holding valve, comprise valve body, diaphragm, valve gap, spring, pressure release pilot valve, pressure gauge, this structure, no matter be that pilot valve spring, piston cavity or diaphragm chamber and pipeline all contact with sewage, oil or organic material.Once the organic materials such as the silt in sewage increase, pilot valve spring, piston cavity or diaphragm chamber and pipeline are blocked, and the lighter increases the maintenance cost of valve, and severe one reduces the working life of valve greatly.Even cause the damage of pump, cannot guarantee the normal operation of pipeline.
Summary of the invention
The technical problem to be solved in the present invention is that existing pilot valve spring, piston cavity or diaphragm chamber and pipeline all contact with sewage, oil or organic material, easily blocked, greatly reduce the working life of pressure release/holding valve, the low maintenance type pressure release/holding valve of the external spring that a kind of pilot valve spring, piston cavity or diaphragm chamber and pipeline do not contact with water, sewage, oil or organic material thing is provided for this reason.
Technological scheme of the present invention is: the low maintenance type pressure release/holding valve of external spring, and it comprises valve body, valve plate, valve rod and valve seat, and described valve seat top is connected with external spring mechanism, and described valve body side is connected with oil pressure inner loop pipeline system;
Described external spring mechanism comprises the seal chamber being made up of steel bushing and steel bushing top board that is fixed in valve seat top, described seal chamber both sides are affixed by coupling bar and valve seat, described seal chamber inside is marked with piston cavity of resorption machine oil, described piston cavity of resorption machine oil liquid level is provided with piston, described valve rod is extended also successively through valve seat to valve seat by valve inner, piston cavity of resorption machine oil, piston and steel bushing top board, described valve rod top is socketed with spring pedestal, on described spring pedestal, be vertically provided with spring, described spring top is provided with strut fixed plate, the two ends of described strut fixed plate are fixed in valve seat top by strut,
Described oil pressure inner loop pipeline system comprises that being located at one end in valve seat is communicated with the other end and the extraneous connecting passage being communicated with of valve body with piston cavity of resorption machine oil, described connecting passage is communicated with valve body bottom by oil pipeline, described oil pipeline and valve body bottom connectivity part is positioned under valve plate, is provided with successively the first ball valve, pressure gauge, flow-adjustable valve, the inside that are connected with connecting passage and is equipped with membrane valve and second ball valve of barrier film epicoele machine oil on described oil pipeline.
The improvement of such scheme is to be provided with regulator plate between described spring top and strut fixed plate, distance between described regulator plate and strut fixed plate is by adjusting screw rod and adjusting nut adjusting size, and described adjusting screw rod is fixed on spring pedestal through regulator plate and spring downwards successively.
The further improvement of such scheme is described adjusting screw rod and valve rod bias, and throw of eccentric is 3mm-5mm.
It is to be provided with protective housing outside described external spring mechanism that a step again of such scheme is improved.
The further improvement of such scheme is between described valve plate and valve body, to be provided with valve plate seal ring.
The invention has the beneficial effects as follows external spring mechanism convenient operation, directly do not contact with water, sewage and organic substance, extend spring working life, reduce maintenance cost.The oil pressure inner loop pipeline system that simultaneously first, second ball valve, membrane valve, flow-adjustable valve, pressure gauge and oil pipeline form, makes piston cylinder can not enter blockedly because of sewage foreign material and organic substance, extends working life of piston cylinder.Can under the severe situation of any dust storm, sewage and foreign organic matter, use for a long time, minimum maintenance cost is provided; When adjusting screw rod and valve rod bias make valve plate lifting, to lopsidedness, can play better current stabilization effect, reduce the impact force of current to valve inner.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present invention;
Fig. 2 is that the A-A of Fig. 1 cuts open figure;
In figure, 1, adjusting screw rod, 2, strut fixed plate, 3, strut, 4, adjusting nut, 5, regulator plate, 6, spring, 7, spring pedestal, 8, valve rod, 9, steel bushing top board, 10, steel bushing, 11, coupling bar, 12, piston, 13, piston packing, 14, piston cavity of resorption machine oil, 15, valve seat, 16, the first male connection, 17, the first ball valve, 18, the second male connection, 19, long internal thread is taken over, 20, the 3rd male connection, 21, pressure gauge, 22, female branch tee, 23, the inipple all round, 24, nipple, 25, the 5th male connection, 26, flow-adjustable valve, 27, the 6th male connection, 28, membrane valve, 29, barrier film epicoele machine oil, 30, internal thread elbow, 31, the 7th male connection, 32, the second ball valve, 33, the 8th male connection, 34, valve body, 35, valve plate, 36, valve plate seal ring, 37, protective housing, 38, diaphragm.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described.
As shown in Figure 1 and Figure 2, valve body 34 of the present invention, valve plate 35, valve rod 8 and valve seat 15, described valve seat top is connected with external spring mechanism, and described valve body side is connected with oil pressure inner loop pipeline system;
External spring mechanism comprises the seal chamber being made up of steel bushing 10 and steel bushing top board 9 that is fixed in valve seat top, described seal chamber both sides are affixed by coupling bar 11 and valve seat, described seal chamber inside is marked with piston cavity of resorption machine oil 14, described piston cavity of resorption machine oil liquid level is provided with piston 12, described valve rod is extended also successively through valve seat to valve seat by valve inner, piston cavity of resorption machine oil, piston and steel bushing top board, described valve rod top is smooth arc surface, on it, be socketed with spring pedestal 7, spring pedestal bottom is provided with groove, valve rod top is stretched in this groove, the size shape at valve rod top and the bottom groove of spring pedestal are suitable, on described spring pedestal, be vertically provided with spring 6, described spring top is provided with strut fixed plate 2, the two ends of described strut fixed plate are fixed in valve seat top by strut 3,
Oil pressure inner loop pipeline system comprises that being located at one end in valve seat is communicated with the other end and the extraneous connecting passage being communicated with of valve body with piston cavity of resorption machine oil, described connecting passage is communicated with valve body bottom by oil pipeline, described oil pipeline and valve body bottom connectivity part is positioned under valve plate, is provided with successively the first ball valve 17, pressure gauge 21, flow-adjustable valve 26, the inside that are connected with connecting passage and is equipped with membrane valve 28 and second ball valve 32 of barrier film epicoele machine oil 29 on described oil pipeline.
Oil pipeline specifically can comprise the first male connection 16 being connected with connecting passage, the other end of the first male connection 16 is connected with the first ball valve 17, the first ball valve 17 is taken over 19 by the second male connection 18 and long internal thread and is connected, the other end of long internal thread adapter 19 is connected with pressure gauge 21 by the 3rd male connection 20, pressure gauge 21 by female branch tee 22 with all round inipple 23 be connected with nipple 24, nipple 24 is connected with flow-adjustable valve 26 by the 5th male connection 25, flow-adjustable valve 26 is connected with membrane valve 28 by the 6th male connection 27, in the cavity of membrane valve 28, be marked with barrier film epicoele machine oil 29, membrane valve 28 is connected with the 7th male connection 31 by internal thread elbow 30, the 7th male connection 31 is connected with the second ball valve 32, the second ball valve 32 is connected with valve body by the 8th male connection 33.
For spring pressure is regulated, further control valve plate 35 open and close degree, reach pressure release and hold pressure effect, can between spring top and strut fixed plate, be provided with regulator plate 5, the distance between described regulator plate and strut fixed plate is by adjusting screw rod 1 and adjusting nut 4 adjusting sizes.Adjusting screw rod 1 is fixed on spring pedestal 7 through regulator plate and spring downwards successively.When regulator plate to strut fixed plate near time, spring contraction, provides stronger preload pressure, when regulator plate is during away from strut fixed plate, spring expansion, provides weak preload pressure, can need free adjusting according to system.
Preference of the present invention is that valve plate one end is affixed by extension spring and valve interior wall, can make like this valve plate in the time of lifting to the lopsidedness that there is no extension spring, the current that better control enters valve inner make its bias current, the water flow impact pressure that valve plate is subject to is like this smaller, also can control the water yield that enters valve inner.Although do not indicate extension spring in figure, those skilled in the art can clearly know by foregoing description the position of extension spring.
For external spring mechanism being provided to more fully protection, can be provided with protective housing 37, dust and moisture outward at external spring mechanism.In order to make valve inner sealing effect better, can between valve plate and valve body, be provided with valve plate seal ring 36.
Use time of the present invention, pressure leak process is as follows: in the time that hydraulic pressure is too high, current promote the diaphragm 38 of membrane valve 28 through the second ball valve 32, the barrier film epicoele machine oil 29 of diaphragm top is successively by the 6th male connection 27, flow-adjustable valve 26, the 5th male connection 25, nipple 24, the inipple 23 all round, female branch tee 22, pressure gauge 21, the 3rd male connection 20, long internal thread takes over 19, the second male connection 18, the first ball valve 17, the first male connection 16, valve seat 15 enters the piston cavity of resorption machine oil 14 of piston cavity of resorption, promotion piston 12 moves upward and carries out pressure release, after putting in place, hold pressure.Complete pressure release and hold pressure process.When time with no pressure, under the restoring force effect of spring, close, carry out pressure release next time and hold pressure circulation.

Claims (5)

1. the low maintenance type pressure release/holding valve of external spring, it comprises valve body (34), valve plate (35), valve rod (8) and valve seat (15), it is characterized in that described valve seat top is connected with external spring mechanism, described valve body side is connected with oil pressure inner loop pipeline system;
Described external spring mechanism comprises the seal chamber being made up of steel bushing (10) and steel bushing top board (9) that is fixed in valve seat top, described seal chamber both sides are affixed by coupling bar (11) and valve seat, described seal chamber inside is marked with piston cavity of resorption machine oil (14), described piston cavity of resorption machine oil liquid level is provided with piston (12), described valve rod is extended also successively through valve seat to valve seat by valve inner, piston cavity of resorption machine oil, piston and steel bushing top board, described valve rod top is socketed with spring pedestal (7), on described spring pedestal, be vertically provided with spring (6), described spring top is provided with strut fixed plate (2), the two ends of described strut fixed plate are fixed in valve seat top by strut (3),
Described oil pressure inner loop pipeline system comprises that being located at one end in valve seat is communicated with the other end and the extraneous connecting passage being communicated with of valve body with piston cavity of resorption machine oil, described connecting passage is communicated with valve body bottom by oil pipeline, described oil pipeline and valve body bottom connectivity part is positioned under valve plate, is provided with successively the first ball valve (17), pressure gauge (21), flow-adjustable valve (26), the inside that are connected with connecting passage and is equipped with membrane valve (28) and second ball valve (32) of barrier film epicoele machine oil (29) on described oil pipeline.
2. the low maintenance type pressure release/holding valve of external spring as claimed in claim 1, it is characterized in that being provided with between described spring top and strut fixed plate regulator plate (5), distance between described regulator plate and strut fixed plate is by adjusting screw rod (1) and adjusting nut (4) adjusting size, and described adjusting screw rod (1) is fixed on spring pedestal (7) through regulator plate and spring downwards successively.
3. the low maintenance type pressure release/holding valve of external spring as claimed in claim 2, is characterized in that described valve plate one end is affixed by extension spring and valve interior wall.
4. the low maintenance type pressure release/holding valve of external spring as claimed in claim 3, is characterized in that being provided with protective housing (37) outside described external spring mechanism.
5. the low maintenance type pressure release/holding valve of the external spring as described in as arbitrary in claim 1-4, is characterized in that being provided with between described valve plate and valve body valve plate seal ring (36).
CN201410161118.2A 2014-04-22 2014-04-22 The low maintenance type pressure release/holding valve of external spring Active CN103899807B (en)

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CN103899807B CN103899807B (en) 2016-05-11

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107620819A (en) * 2017-11-13 2018-01-23 佛山市恒爱网络科技有限公司 A kind of filtering type holding valve
CN109373027A (en) * 2018-12-17 2019-02-22 金冬梅 A kind of Spring-Loaded Pressure Relief Valve that spring service life is high
CN116480822A (en) * 2023-05-12 2023-07-25 河北长宏阀门有限公司 Spring type hydrogen explosion venting valve

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1124282A (en) * 1964-06-03 1968-08-21 Hopkinsons Ltd Fluid flow control relief valve
CN202209458U (en) * 2011-09-23 2012-05-02 广东正力精密机械有限公司 Diaphragm type minimum pressure valve
CN102620018A (en) * 2012-03-29 2012-08-01 天正阀门有限公司 High-temperature high-pressure pneumatic control automatic pressure relief valve
CN103047457A (en) * 2012-12-19 2013-04-17 武汉大禹阀门股份有限公司 Water hammer discharge valve
CN203784399U (en) * 2014-04-22 2014-08-20 安徽铜都流体科技股份有限公司 Low-maintenance type pressure relief/sustaining valve provided with external spring

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1124282A (en) * 1964-06-03 1968-08-21 Hopkinsons Ltd Fluid flow control relief valve
CN202209458U (en) * 2011-09-23 2012-05-02 广东正力精密机械有限公司 Diaphragm type minimum pressure valve
CN102620018A (en) * 2012-03-29 2012-08-01 天正阀门有限公司 High-temperature high-pressure pneumatic control automatic pressure relief valve
CN103047457A (en) * 2012-12-19 2013-04-17 武汉大禹阀门股份有限公司 Water hammer discharge valve
CN203784399U (en) * 2014-04-22 2014-08-20 安徽铜都流体科技股份有限公司 Low-maintenance type pressure relief/sustaining valve provided with external spring

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107620819A (en) * 2017-11-13 2018-01-23 佛山市恒爱网络科技有限公司 A kind of filtering type holding valve
CN109373027A (en) * 2018-12-17 2019-02-22 金冬梅 A kind of Spring-Loaded Pressure Relief Valve that spring service life is high
CN116480822A (en) * 2023-05-12 2023-07-25 河北长宏阀门有限公司 Spring type hydrogen explosion venting valve

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