CN105889607A - Ultrahigh pressure release valve - Google Patents

Ultrahigh pressure release valve Download PDF

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Publication number
CN105889607A
CN105889607A CN201610448410.1A CN201610448410A CN105889607A CN 105889607 A CN105889607 A CN 105889607A CN 201610448410 A CN201610448410 A CN 201610448410A CN 105889607 A CN105889607 A CN 105889607A
Authority
CN
China
Prior art keywords
push rod
valve
valve sleeve
supertension
pressure medium
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
Application number
CN201610448410.1A
Other languages
Chinese (zh)
Inventor
梁日成
范志勇
冯斌
卢进聪
杨华亮
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
FOSHAN CERAMICS RESEARCH INSTITUTE Co Ltd
FOSHAN NANHAI JINGANG NEW MATERIAL Co Ltd
Original Assignee
FOSHAN CERAMICS RESEARCH INSTITUTE Co Ltd
FOSHAN NANHAI JINGANG NEW MATERIAL Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by FOSHAN CERAMICS RESEARCH INSTITUTE Co Ltd, FOSHAN NANHAI JINGANG NEW MATERIAL Co Ltd filed Critical FOSHAN CERAMICS RESEARCH INSTITUTE Co Ltd
Priority to CN201610448410.1A priority Critical patent/CN105889607A/en
Publication of CN105889607A publication Critical patent/CN105889607A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • F16K31/00Actuating devices; Operating means; Releasing devices
    • F16K31/12Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/122Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
    • 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
    • F16K1/00Lift 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
    • F16K1/32Details
    • 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
    • F16K1/00Lift 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
    • F16K1/32Details
    • F16K1/34Cutting-off parts, e.g. valve members, seats
    • F16K1/36Valve members
    • F16K1/38Valve members of conical shape

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Safety Valves (AREA)

Abstract

The invention relates to an ultrahigh pressure release valve. The ultrahigh pressure release valve comprises an ejection oil cylinder, a piston, an ejector rod, an ejector rod reset spring, an upper valve sleeve, a high-pressure medium inlet, a pull ring, a valve seat, a lower valve sleeve, a valve element, a valve element reset spring and a high-pressure medium outlet; the ejection oil cylinder is fixed on the upper valve sleeve, the piston is installed inside the ejection oil cylinder, the ejector rod is connected with the piston and extends out of the ejection oil cylinder, the ejector rod penetrates through the ejector rod reset spring, the pull ring is arranged between the upper valve sleeve and the lower valve sleeve, the valve seat is installed inside the pull ring, the valve element is located inside the lower valve sleeve, and the valve element reset spring is located inside the lower valve sleeve. According to the ultrahigh pressure release valve, a high-pressure medium is separated from a low-pressure medium, the high-pressure medium can be released out rapidly, the efficiency of releasing the high-pressure medium is improved, the time cost of the industrial production process is reduced, and the production efficiency is improved.

Description

A kind of supertension relief valve
Technical field
The present invention relates to ceramic machinery apparatus field, particularly relate to a kind of supertension relief valve.
Background technology
On market, supertension relief valve is all that pressure release flow is less, and pressure release frequency is relatively low, thus pressure leak process is longer, actual Production efficiency in industrial processes is low, for requiring that single pressure release flow is big, and the static pressure equipment that pressure release frequency is big, current city Field almost blank.For problem above, it is necessary to propose a kind of new supertension relief valve, solve problem above.
The present invention proposes a kind of supertension relief valve, it is possible to realizes the big flow of single pressure release, improves industrial production efficiency.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of supertension relief valve, it is possible to realize the big flow of single pressure release, Improve industrial production efficiency.
In order to solve above-mentioned technical problem, the present invention proposes a kind of supertension relief valve, including ejection cylinder, piston, top Bar, push rod back-moving spring, upper valve sleeve, high-pressure medium entrance, draw ring, valve seat, lower valve sleeve, spool, valve core reseting spring and height Pressure media outlet;
Described ejection cylinder is fixed on described upper valve sleeve, and described piston is arranged on inside described ejection cylinder, described push rod with Outside described piston is connected and stretches out described ejection cylinder and arrive in described valve seat;
Described push rod back-moving spring is run through by described push rod, and described high-pressure medium entrance is arranged on described upper valve sleeve, described in draw Ring is arranged between upper valve sleeve and lower valve sleeve;
Valve seat is installed on the inside of described draw ring, and described spool is positioned at inside described lower valve sleeve, and valve core reseting spring is positioned at described Inside lower valve sleeve, it is used for making valve core reset;
High-pressure medium outlet is positioned on described lower valve sleeve.
Preferably, in place of the linking of described oil cylinder and described upper valve sleeve, one-way seals, described one-way seals it are additionally provided with Wrap up the surrounding of described push rod.
Preferably, the internal diameter of described push rod back-moving spring is more than or equal to the external diameter of described push rod.
Preferably, described upper valve sleeve being provided with through hole, described through hole is in T shape, the top of wherein said T-shaped through hole For accommodating described push rod, the port of T-shaped afterbody is connected with described high-pressure medium entrance.
Preferably, described upper valve sleeve being provided with push rod fairlead, described push rod fairlead is used for fixing described one-way sealing Sealing.
Preferably, described valve seat spool interface is provided below, described spool interface is cone structure.
Preferably, described spool is positioned at inside the first through hole, and it includes column the first salient point and the second salient point, and described Cone structure, the cone structure on described spool and the cone structure phase on described valve seat it is provided with between one salient point and column Coupling.
Preferably, the surrounding of described column is additionally provided with pressure release damping borehole jack, and described pressure release damping borehole jack is by arranging The copper shell having multiple aperture is made.
Preferably, described second salient point is positioned at below described column, and its external diameter is less than the external diameter of column, and and post Constituting a ledge structure between shape body, described second salient point stretches into the inside stating valve core reseting spring.
Preferably, the space being easy to observe described one-way seals it is provided with between described ejection cylinder and described upper valve sleeve.
Compared with prior art, the beneficial effects of the present invention is:
1, high-pressure medium and low-pressure medium (control medium) are separated by a kind of supertension relief valve of the present invention, it is simple to Quickly described high-pressure medium is discharged, improve the efficiency of release high-pressure medium, saved the time of industrial processes Cost, improves production efficiency.
2, the present invention is additionally provided with one-way seals in place of the linking of described oil cylinder and described upper valve sleeve, prevents from controlling to be situated between Matter leaks into outside described ejection cylinder along described push rod.
3, the present invention is provided with the space being easy to observe one-way seals between described ejection cylinder and upper valve sleeve, in order to just In checking the sealing situation of one-way seals, and isolate high pressure and low-voltage device.
4, the copper shell that the present invention is additionally provided with by being provided with multiple aperture in the surrounding of described spool makes pressure release damping hole Set, on the one hand, be prevented from spool sideslip, on the other hand can reduce the flow velocity of high-pressure medium, under the conditions of protection high-voltage high-speed Spool be without prejudice.
Accompanying drawing explanation
Fig. 1 is the cross-sectional view of the present invention a kind of supertension relief valve.
Detailed description of the invention
In order to make those skilled in the art be more fully understood that technical scheme, below in conjunction with the accompanying drawings with the most real The present invention is described in further detail to execute example.
As it is shown in figure 1, a kind of supertension relief valve, including ejection cylinder 1, piston 2, push rod 3, push rod back-moving spring 4, on Valve pocket 5, high-pressure medium entrance 6, draw ring 7, valve seat 8, lower valve sleeve 9, spool 10, valve core reseting spring 11 and high-pressure medium outlet 12;Described ejection cylinder 1 is fixed on described upper valve sleeve 5, and it is internal that described piston 2 is arranged on described ejection cylinder 1, described push rod Outside 3 are connected with described piston 2 and stretch out described ejection cylinder 1, arrive described valve seat 8 internal, described push rod back-moving spring 4 Being run through by described push rod 3, described high-pressure medium entrance 6 is arranged at the side of described upper valve sleeve 5, and described draw ring 7 is arranged at valve Below set 5, valve seat 8 is installed on the inside of described draw ring 7, and lower valve sleeve 9 is positioned at below described draw ring 7, described spool 10 It is internal that and part internal in described lower valve sleeve 9 arrives described valve seat 8 outside stretching out lower valve sleeve 9, and valve core reseting spring 11 is positioned at institute State lower valve sleeve 9 internal, be used for making valve core reset, high-pressure medium outlet 12 to be positioned at below described lower valve sleeve 9.
Described ejection cylinder 1 is fixed on described upper valve sleeve by screw or other modes, and it includes controlling medium inlet, Piston installing zone, push rod back-moving spring installing zone, and push rod installing zone.Described control medium inlet is used for injecting control medium Or release control medium, piston installing zone is used for laying piston, and described piston can move up and down under the effect of the pressure, push rod Back-moving spring installing zone is used for laying push rod back-moving spring, is a kind of ledge structure.
Described piston 2 is arranged at the piston installing zone of described ejection cylinder 1, and it can move up and down under pressure, The top of described push rod is connected with described piston, and through described spring and push rod installing zone, through upper valve sleeve, arrives described In valve seat, further, outside preventing control medium from leaking into described ejection cylinder along described push rod, the present invention is described Being additionally provided with one-way seals 13 in place of the linking of oil cylinder and described upper valve sleeve, described one-way seals is wrapped in described push rod four Week.
Above and the described piston 2 of described push rod back-moving spring 4 is connected, and installs with described push rod back-moving spring below The step in district is connected, and the internal diameter of described push rod back-moving spring is more than or equal to the external diameter of described push rod, it is simple to described push rod is worn Cross described push rod back-moving spring.
When injecting control medium, in ejection cylinder, pressure increases, and promotes piston to move downward, compresses push rod back-moving spring, Push rod is followed piston and is moved downwardly together, and during release control medium, in ejection cylinder, pressure reduces, and is in the top under compressive state Bar back-moving spring promotes described piston upwards, and push rod is followed described piston and moved upwardly together.
Described upper valve sleeve 5 is connected with described high-pressure medium entrance 6, and it includes through hole, push rod fairlead 14 and eject oil Cylinder installing zone.Described high-pressure medium entrance is fixed on the through hole on upper valve sleeve by sealing gasket or flange.Described through hole is in " T " Font, wherein the top of " T " font is used for accommodating described push rod, and the port of the other end is connected with described high-pressure medium entrance; And the upper part aperture of described " T " font through hole is more than the external diameter of described push rod, it is simple to high-pressure medium flows to valve seat by through hole. In other embodiments, the upper part aperture of described " T " font through hole can also be equal to the external diameter of described push rod, in order to make high pressure be situated between Mass-energy enough flows to valve seat, can arrange the described valve seat of connection and described high-pressure medium entrance by the ejector rod part region of through hole Aperture, be used for realizing high-pressure medium and flowing to valve seat by through hole and push rod.Described push rod fairlead 14 is used for fixing described list To sealing member 13, prevent high-pressure medium from mixing mutually with described control medium.Ejection cylinder installing zone is used for installing described oil cylinder, for Be easy to check the sealing situation of one-way seals, and isolate high pressure and low-voltage device, in the present embodiment, described ejection cylinder and The space 16 being easy to observe one-way seals it is provided with between upper valve sleeve.
Described draw ring 7 is arranged in the middle of described upper valve sleeve 5 and lower valve sleeve 9, is used for fixing described valve seat.
Described valve seat is positioned at the inside of described draw ring, is provided with valve hole in the middle of it, and the above of described valve hole sets Be equipped with push rod interface, described valve hole spool interface is provided below.The shape of described push rod interface and position are with described The form and dimension of push rod afterbody matches, and for being connected with described push rod, described spool interface is cone structure, for Described spool connects.
Described lower valve sleeve is arranged at below described draw ring, and it includes step-like logical with described high-pressure medium outlet Hole.Described step-like through hole includes the first through hole, the second through hole and third through-hole, and above-described three through holes are interconnected, Its aperture is sequentially reduced from top to bottom, and constitutes first step between the first through hole and the second through hole, the second through hole and threeway Second step is constituted between hole.The aperture of the first through hole is maximum and is positioned at and is topmost connected with described valve seat, is used for laying Spool, therefore the aperture of described first through hole is more than the external diameter of described spool, the second through hole is positioned at the centre position of step-like through hole, Its aperture is more than third through-hole aperture, less than the first through-hole aperture, is used for laying described valve core reseting spring, the hole of third through-hole Footpath is minimum and is connected with the outlet of described high-pressure medium.
Described spool is positioned at inside the first through hole, and it includes column, the first salient point and the second salient point.Described column position In the centre of described spool, the first salient point and the second salient point lay respectively at the two ends of described column, specifically, the first salient point External diameter is less than the external diameter of column, and is provided with cone structure between the first salient point and column, the conical surface knot on described spool Structure matches with the cone structure of described valve seat upper valve core interface, therefore puts the cone structure on spool and the conical surface on described valve seat Structure is connected, and can realize being tightly connected between spool and valve seat.Described column is positioned at inside the first through hole, column Surrounding be additionally provided with pressure release damping borehole jack 15, described pressure release damping borehole jack 15 be made up of the copper shell being provided with multiple aperture, Its aperture is more than the second through hole hole strength, and less than the first through-hole aperture, described pressure release damping borehole jack 15 is positioned at inside the first through hole, its Top is connected with described valve seat, and bottom is connected with described first step, and is enclosed in the surrounding of the column of described spool, On the one hand, it is possible to prevent spool sideslip, the flow velocity of high-pressure medium, the valve under the conditions of protection high-voltage high-speed can on the other hand be reduced Core is without prejudice.
Described second salient point is positioned at below described column, its external diameter less than the external diameter of column, and in column it Between constitute a ledge structure, described second salient point stretches into the inside of described valve core reseting spring, prevents back-moving spring sideslip.
Described valve core reseting spring is positioned at the second through hole, and its external diameter is more than third through-hole aperture and the hole of the second salient point Footpath, less than the external diameter of column, the ledge structure constituted with column and second salient point of described spool above it is connected, its The second step constituted with described third through-hole and the second through hole below is connected.
The concrete pressure leak process of a kind of supertension relief valve of the present invention is as follows: control to internal injection of ejection cylinder Medium, in ejection cylinder pressure increase, promote piston move downward, compress push rod back-moving spring, push rod follow piston together to Lower motion, the second salient point pusher movable valve plug arriving spool moves downward, and valve core reseting spring is in compressive state, on spool Cone structure slowly leaves the cone structure on described valve seat, and after having had gap between spool and valve seat, high-pressure medium is from height Pressure media outlet sequentially passes through third through-hole, the second through hole, the first through hole, and the gap between spool and valve seat eventually passes " T " Font through hole discharges from high-pressure medium entrance, and high-pressure medium and low pressure are situated between by a kind of supertension relief valve of the present invention Matter (control medium) is separated, it is simple to quickly discharged by described high-pressure medium, improves the efficiency of release high-pressure medium, Save the time cost of industrial processes, improve production efficiency.
The concrete Plenum Process of a kind of supertension relief valve of the present invention is similar with pressure leak process, and difference is Come in and gone out high-pressure medium by high-pressure medium entrance, sequentially pass through " T " font through hole, the gap between valve seat and spool, the first through hole, Second through hole, third through-hole, finally export pressurising from high-pressure medium.
The concrete pressure maintaining period of a kind of supertension relief valve of the present invention is as follows: after pressurising completes, release control During medium, in ejection cylinder, pressure reduces, and the push rod back-moving spring being under compressive state promotes described piston upwards, top Bar is followed described piston and is moved upwardly together, and push rod slowly leaves the first salient point of described spool, is in the spool of compressive state Back-moving spring promotes spool to move upward, and the cone structure on spool contacts with the cone structure on valve seat, defines one Seal structure, pressure maintaining period can be realized.
Compared with prior art, the beneficial effects of the present invention is:
1, high-pressure medium and low-pressure medium (control medium) are separated by a kind of supertension relief valve of the present invention, it is simple to Quickly described high-pressure medium is discharged, improve the efficiency of release high-pressure medium, saved the time of industrial processes Cost, improves production efficiency.
2, the present invention is additionally provided with one-way seals in place of the linking of described oil cylinder and described upper valve sleeve, prevents from controlling to be situated between Matter leaks into outside described ejection cylinder along described push rod.
3, the present invention is provided with the space being easy to observe one-way seals between described ejection cylinder and upper valve sleeve, in order to just In checking the sealing situation of one-way seals, and isolate high pressure and low-voltage device.
4, the copper shell that the present invention is additionally provided with by being provided with multiple aperture in the surrounding of described spool makes pressure release damping hole Set, on the one hand, be prevented from spool sideslip, on the other hand can reduce the flow velocity of high-pressure medium, under the conditions of protection high-voltage high-speed Spool be without prejudice.
The above is the preferred embodiment of the present invention, it is noted that for those skilled in the art For, under the premise without departing from the principles of the invention, it is also possible to make some improvements and modifications, these improvements and modifications are also considered as Protection scope of the present invention.

Claims (10)

1. a supertension relief valve, including ejection cylinder, piston, push rod, push rod back-moving spring, upper valve sleeve, high-pressure medium enters Mouthful, draw ring, valve seat, lower valve sleeve, spool, valve core reseting spring and high-pressure medium outlet;
Described ejection cylinder is fixed on described upper valve sleeve, and described piston is arranged on inside described ejection cylinder, described push rod with Outside described piston is connected and stretches out described ejection cylinder and arrive in described valve seat;
Described push rod back-moving spring is run through by described push rod, and described high-pressure medium entrance is arranged on described upper valve sleeve, described in draw Ring is arranged between upper valve sleeve and lower valve sleeve;
Valve seat is installed on the inside of described draw ring, and described spool is positioned at inside described lower valve sleeve, and valve core reseting spring is positioned at described Inside lower valve sleeve, it is used for making valve core reset;
High-pressure medium outlet is positioned on described lower valve sleeve.
Supertension relief valve the most according to claim 1, it is characterised in that in described oil cylinder and the linking of described upper valve sleeve Part is additionally provided with one-way seals, and described one-way seals wraps up the surrounding of described push rod.
Supertension relief valve the most according to claim 1, it is characterised in that the internal diameter of described push rod back-moving spring more than or External diameter equal to described push rod.
Supertension relief valve the most according to claim 1, it is characterised in that be provided with through hole on described upper valve sleeve, described Through hole is in T shape, and the top of the most T-shaped through hole is used for accommodating described push rod, the port of the bottom of T-shaped through hole and described height Pressure medium inlet is connected.
Supertension relief valve the most according to claim 2, it is characterised in that be provided with push rod on described upper valve sleeve and guide Set, described push rod fairlead is used for fixing described one-way seals.
Supertension relief valve the most according to claim 1, it is characterised in that the spool that is provided below of described valve seat connects Mouthful, described spool interface is cone structure.
Supertension relief valve the most according to claim 6, it is characterised in that described spool is positioned at inside the first through hole, its Including column the first salient point and the second salient point, between described first salient point and column, it is provided with cone structure, described spool On cone structure match with the cone structure on described valve seat.
Supertension relief valve the most according to claim 7, it is characterised in that the surrounding of described column is additionally provided with pressure release Damping borehole jack, described pressure release damping borehole jack is made up of the copper shell being provided with multiple aperture.
Supertension relief valve the most according to claim 7, it is characterised in that described second salient point is positioned at described column Below, its external diameter less than the external diameter of column, and and column between constitute a ledge structure, described second salient point stretches into be stated The inside of valve core reseting spring.
Supertension relief valve the most according to claim 2, it is characterised in that described ejection cylinder and described upper valve sleeve it Between be provided with the space being easy to observe described one-way seals.
CN201610448410.1A 2016-06-21 2016-06-21 Ultrahigh pressure release valve Pending CN105889607A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610448410.1A CN105889607A (en) 2016-06-21 2016-06-21 Ultrahigh pressure release valve

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Application Number Priority Date Filing Date Title
CN201610448410.1A CN105889607A (en) 2016-06-21 2016-06-21 Ultrahigh pressure release valve

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Publication Number Publication Date
CN105889607A true CN105889607A (en) 2016-08-24

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106090361A (en) * 2016-08-15 2016-11-09 郑州磨料磨具磨削研究所有限公司 A kind of stepless variable supertension servo relief valve
CN106931200A (en) * 2017-03-08 2017-07-07 佛山市昌达业自动化科技有限公司 Ultra-high-pressure hand pressure relief device
CN109058233A (en) * 2018-10-12 2018-12-21 杭州先力液压机械有限公司 Hydraulic station special test platform and its test method
CN110721079A (en) * 2019-11-21 2020-01-24 张明 Ear massage nursing device with magnetic therapy effect

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10323812A1 (en) * 2003-05-23 2004-12-09 Sca Schucker Gmbh & Co. Device for filling of container with fluid or paste material has outlet valve forming plunger valve with valve component constructed as cylinder piston and outlet nozzle as cylinder bore
CN202790558U (en) * 2012-07-27 2013-03-13 四川航空工业川西机器有限责任公司 Self-tight type seal ultrahigh-pressure pressure relief valve
CN203940009U (en) * 2014-07-21 2014-11-12 太原市鸿煷机械设备有限公司 Ultrahigh pressure Decompression valves
CN203979593U (en) * 2014-08-01 2014-12-03 苏州通衢机电设备有限公司 Two logical large pilot valves
CN205859265U (en) * 2016-06-21 2017-01-04 佛山市南海金刚新材料有限公司 A kind of supertension relief valve

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10323812A1 (en) * 2003-05-23 2004-12-09 Sca Schucker Gmbh & Co. Device for filling of container with fluid or paste material has outlet valve forming plunger valve with valve component constructed as cylinder piston and outlet nozzle as cylinder bore
CN202790558U (en) * 2012-07-27 2013-03-13 四川航空工业川西机器有限责任公司 Self-tight type seal ultrahigh-pressure pressure relief valve
CN203940009U (en) * 2014-07-21 2014-11-12 太原市鸿煷机械设备有限公司 Ultrahigh pressure Decompression valves
CN203979593U (en) * 2014-08-01 2014-12-03 苏州通衢机电设备有限公司 Two logical large pilot valves
CN205859265U (en) * 2016-06-21 2017-01-04 佛山市南海金刚新材料有限公司 A kind of supertension relief valve

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106090361A (en) * 2016-08-15 2016-11-09 郑州磨料磨具磨削研究所有限公司 A kind of stepless variable supertension servo relief valve
CN106090361B (en) * 2016-08-15 2018-03-27 郑州磨料磨具磨削研究所有限公司 A kind of stepless variable super-pressure servo relief valve
CN106931200A (en) * 2017-03-08 2017-07-07 佛山市昌达业自动化科技有限公司 Ultra-high-pressure hand pressure relief device
CN106931200B (en) * 2017-03-08 2023-03-14 佛山市昌达业自动化科技有限公司 Ultrahigh pressure manual pressure relief device
CN109058233A (en) * 2018-10-12 2018-12-21 杭州先力液压机械有限公司 Hydraulic station special test platform and its test method
CN110721079A (en) * 2019-11-21 2020-01-24 张明 Ear massage nursing device with magnetic therapy effect

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Application publication date: 20160824

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