CN104061346A - Duplex type hydraulic control one-way valve - Google Patents

Duplex type hydraulic control one-way valve Download PDF

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Publication number
CN104061346A
CN104061346A CN201410261220.XA CN201410261220A CN104061346A CN 104061346 A CN104061346 A CN 104061346A CN 201410261220 A CN201410261220 A CN 201410261220A CN 104061346 A CN104061346 A CN 104061346A
Authority
CN
China
Prior art keywords
valve
push rod
piston
hydraulic fluid
fluid port
Prior art date
Application number
CN201410261220.XA
Other languages
Chinese (zh)
Inventor
薛文英
Original Assignee
苏州华徕光电仪器有限公司
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 苏州华徕光电仪器有限公司 filed Critical 苏州华徕光电仪器有限公司
Priority to CN201410261220.XA priority Critical patent/CN104061346A/en
Publication of CN104061346A publication Critical patent/CN104061346A/en

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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
    • F16K15/00Check valves
    • F16K15/18Check valves with actuating mechanism; Combined check valves and actuated valves
    • F16K15/186Check valves which can be actuated by a pilot valve
    • 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
    • F16K27/00Construction of housing; Use of materials therefor
    • F16K27/02Construction of housing; Use of materials therefor of lift valves
    • F16K27/0209Check valves or pivoted valves
    • 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
    • F16K31/1223Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston one side of the piston being acted upon by the circulating fluid

Abstract

The invention discloses a duplex type hydraulic control one-way valve, which comprises a valve body and a main valve core and is characterized in that a valve cavity is arranged in the valve body, the main valve core is arranged in the valve cavity, a spring connected with the top of the valve body is arranged inside the main valve core, an axial small hole is formed in the lower end of the main valve core, a radial hole communicated with the axial small hole is formed in the outer circle of the main valve core, the axial small hole is sealed through an unloading valve core push rod, an unloading valve core is arranged at the upper end of the unloading valve core push rod, a control opening is formed in the bottom of the valve body, a piston is arranged in the valve cavity arranged at the upper end of the control opening, a push rod is connected with the upper end of the piston, and the push rod can push the unloading valve core push rod to upwards move. The duplex type hydraulic control one-way valve solves the problems that the one-way valve can only realize the one-way flowing, the stable reverse flowing cannot be realized, the use function is single, in addition, the damage can easily occur, and the service life is short. The provided duplex type hydraulic control one-way valve has the advantages that the structure is simple, the use is convenient, the two-way flowing can be fast and stably realized, in addition, the damage cannot easily occur, and the service life is long.

Description

A kind of compound Pilot operated check valve

Technical field

The present invention relates to a kind of one-way valve, particularly relate to a kind of compound Pilot operated check valve.

Background technique

One-way valve claims again safety check or check valve.For hydraulic system, prevent oil stream reverse flow, or prevent pressurized air reverse flow for pneumatic system.Current one-way valve can only one-way flow, cannot realize more stable reverse flow, uses function singleness, and complex structure, and usage safety performance is lower, easily damages, and working life is shorter.

Summary of the invention

Can only one-way flow in order to solve in prior art one-way valve, cannot realize more stable reverse flow, use function singleness, and complex structure, usage safety performance is lower, easily damage, the problem that working life is shorter, the invention provides a kind of simple in structure, easy to use, can realize two-way flow by fast and stable, and be not easy to damage, the compound Pilot operated check valve that working life is long.

In order to address the above problem, the technical solution used in the present invention is:

A kind of compound Pilot operated check valve, comprise valve body and main valve plug, it is characterized in that: also comprise piston, push rod, unloading spool, unloading spool push rod and spring, in valve body, be provided with valve pocket, in valve pocket, be provided with main valve plug, in described main valve plug, be provided with the spring being connected with valve body top, in main valve plug lower end, be provided with axial aperture, on the cylindrical of main valve plug, be provided with the radial hole connecting with axial aperture, described axial aperture is sealed by unloading spool push rod, in unloading spool push rod upper end, be provided with unloading spool, in valve body both sides, be respectively arranged with the first hydraulic fluid port and the second hydraulic fluid port, in valve body bottom, be provided with and control mouth, in the valve pocket of described control mouthful upper end, be provided with piston, in piston upper end, be connected with push rod, described push rod can promote to move on unloading spool push rod.

Aforesaid a kind of compound Pilot operated check valve, is characterized in that: described the first hydraulic fluid port and the second hydraulic fluid port are symmetrical arranged, and two hydraulic fluid port caliber size are identical.

Aforesaid a kind of compound Pilot operated check valve, is characterized in that: the described bore of controlling mouth is less than the bore of the first hydraulic fluid port.

Aforesaid a kind of compound Pilot operated check valve, is characterized in that: described unloading spool push rod adopts stainless steel material to make.

Aforesaid a kind of compound Pilot operated check valve, is characterized in that: the aperture of described radial hole is less than the aperture of axial aperture.

Aforesaid a kind of compound Pilot operated check valve, is characterized in that: described piston adopts all-aluminium piston.

The invention has the beneficial effects as follows: the compound Pilot operated check valve of the present invention, simple in structure, use safety and stability, working life is longer, can realize fluid two-way flow, uses diverse in function, and because the control area of unloading spool is less, only need less power can back down unloading spool, greatly reduce reverse unlatching required pilot pressure, compound Pilot operated check valve is specially adapted to use in high-pressure high flux hydraulic power system.

Accompanying drawing explanation

Fig. 1 is the compound hydraulic control one-way valve structures of the present invention schematic diagram.

Embodiment

Below in conjunction with accompanying drawing, the present invention will be further described.

As shown in Figure 1, a kind of compound Pilot operated check valve, comprise valve body 1, main valve plug 2, piston 3, push rod 4, unloading spool 5, unloading spool push rod 6 and spring 7 are provided with valve pocket in valve body 1, are provided with main valve plug 2 in valve pocket, in described main valve plug 2, be provided with the spring 7 being connected with valve body 1 top, in main valve plug 2 lower ends, be provided with axial aperture, be provided with the radial hole connecting with axial aperture on the cylindrical of main valve plug 2, the aperture of described radial hole is less than the aperture of axial aperture.Described axial aperture is by 6 sealings of unloading spool push rod, in unloading spool push rod 6 upper ends, be provided with unloading spool 5, in valve body 1 both sides, be respectively arranged with the first hydraulic fluid port 8 and the second hydraulic fluid port 9, in valve body 1 bottom, be provided with and control mouth 10, in the valve pocket of described control mouthful 10 upper ends, be provided with piston 3, in piston 3 upper ends, be connected with push rod 4, described push rod 4 can promote to move on unloading spool push rod 6.Described the first hydraulic fluid port 8 and the second hydraulic fluid port 9 are symmetrical arranged, and two hydraulic fluid port caliber size are identical.The described bore of controlling mouth 10 is less than the bore of the first hydraulic fluid port 8.Described unloading spool push rod 6 adopts stainless steel material to make, and intensity is high, long service life.Described piston 3 adopts all-aluminium piston.

The compound Pilot operated check valve of the present invention, has an axial aperture in main valve plug 2 lower ends, and axial aperture is by 6 sealings of unloading spool push rod.When the high-voltage oil liquid of the second hydraulic fluid port 9 needs reverse flow to cross 8 mouthfuls of the first hydraulic fluid ports, enter control mouthfuls 10 pressure oil by piston 3 by unloading spool push rod 6 and the unloading spool 5 less distance of jack-up one upwards, make that the high pressure oil of the second hydraulic fluid port 9 is instantaneous flows out from radial hole and the annulus between axial bore and unloading spool push rod 6 lower ends of main valve plug 2, the pressure of the second hydraulic fluid port 9 declines immediately, realizes pressure release; Then, main valve plug 2 is backed down by piston 1, and reverse fluid is flow through smoothly.

In sum, the compound Pilot operated check valve of the present invention, simple in structure, use safety and stability, working life is longer, can realize fluid two-way flow, use diverse in function, and because the control area of unloading spool is less, only need less power can back down unloading spool, greatly reduce reverse unlatching required pilot pressure, compound Pilot operated check valve is specially adapted to use in high-pressure high flux hydraulic power system.

More than show and described basic principle of the present invention, major character and advantage.The technician of the industry should understand; the present invention is not restricted to the described embodiments; that in above-described embodiment and specification, describes just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.

Claims (6)

1. a compound Pilot operated check valve, comprise valve body and main valve plug, it is characterized in that: also comprise piston, push rod, unloading spool, unloading spool push rod and spring, in valve body, be provided with valve pocket, in valve pocket, be provided with main valve plug, in described main valve plug, be provided with the spring being connected with valve body top, in main valve plug lower end, be provided with axial aperture, on the cylindrical of main valve plug, be provided with the radial hole connecting with axial aperture, described axial aperture is sealed by unloading spool push rod, in unloading spool push rod upper end, be provided with unloading spool, in valve body both sides, be respectively arranged with the first hydraulic fluid port and the second hydraulic fluid port, in valve body bottom, be provided with and control mouth, in the valve pocket of described control mouthful upper end, be provided with piston, in piston upper end, be connected with push rod, described push rod can promote to move on unloading spool push rod.
2. a kind of compound Pilot operated check valve according to claim 1, it is characterized in that: described the first hydraulic fluid port and the second hydraulic fluid port are symmetrical arranged, and two hydraulic fluid port caliber size is identical.
3. a kind of compound Pilot operated check valve according to claim 2, is characterized in that: the described bore of controlling mouth is less than the bore of the first hydraulic fluid port.
4. a kind of compound Pilot operated check valve according to claim 3, is characterized in that: described unloading spool push rod adopts stainless steel material to make.
5. a kind of compound Pilot operated check valve according to claim 4, is characterized in that: the aperture of described radial hole is less than the aperture of axial aperture.
6. a kind of compound Pilot operated check valve according to claim 5, is characterized in that: described piston adopts all-aluminium piston.
CN201410261220.XA 2014-06-13 2014-06-13 Duplex type hydraulic control one-way valve CN104061346A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410261220.XA CN104061346A (en) 2014-06-13 2014-06-13 Duplex type hydraulic control one-way valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410261220.XA CN104061346A (en) 2014-06-13 2014-06-13 Duplex type hydraulic control one-way valve

Publications (1)

Publication Number Publication Date
CN104061346A true CN104061346A (en) 2014-09-24

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410261220.XA CN104061346A (en) 2014-06-13 2014-06-13 Duplex type hydraulic control one-way valve

Country Status (1)

Country Link
CN (1) CN104061346A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104455568A (en) * 2014-10-30 2015-03-25 无锡市威海达机械制造有限公司 Check valve capable of reducing starting pressure
CN104455567A (en) * 2014-10-30 2015-03-25 无锡市威海达机械制造有限公司 Check valve capable of prolonging service life
CN105387218A (en) * 2015-12-10 2016-03-09 西安航天动力研究所 Air-control pilot electromagnetic valve
CN108518491A (en) * 2018-04-13 2018-09-11 山西平阳重工机械有限责任公司 A kind of two-way pneumatic control valve
CN108825828A (en) * 2018-08-08 2018-11-16 北京特种机械研究所 A kind of electric control one-way valve

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2055556U (en) * 1989-04-06 1990-04-04 沈阳液压件厂 Hydraulic-control check valve
CN2463629Y (en) * 2001-01-19 2001-12-05 温州市基安机械有限公司 Large flow liquid-control one-way valve
CN101706012A (en) * 2009-11-18 2010-05-12 宁波长壁流体连接件有限公司 Hydraulic control one-way valve
CN204004614U (en) * 2014-06-13 2014-12-10 苏州华徕光电仪器有限公司 A kind of compound Pilot operated check valve

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2055556U (en) * 1989-04-06 1990-04-04 沈阳液压件厂 Hydraulic-control check valve
CN2463629Y (en) * 2001-01-19 2001-12-05 温州市基安机械有限公司 Large flow liquid-control one-way valve
CN101706012A (en) * 2009-11-18 2010-05-12 宁波长壁流体连接件有限公司 Hydraulic control one-way valve
CN204004614U (en) * 2014-06-13 2014-12-10 苏州华徕光电仪器有限公司 A kind of compound Pilot operated check valve

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104455568A (en) * 2014-10-30 2015-03-25 无锡市威海达机械制造有限公司 Check valve capable of reducing starting pressure
CN104455567A (en) * 2014-10-30 2015-03-25 无锡市威海达机械制造有限公司 Check valve capable of prolonging service life
CN105387218A (en) * 2015-12-10 2016-03-09 西安航天动力研究所 Air-control pilot electromagnetic valve
CN108518491A (en) * 2018-04-13 2018-09-11 山西平阳重工机械有限责任公司 A kind of two-way pneumatic control valve
CN108825828A (en) * 2018-08-08 2018-11-16 北京特种机械研究所 A kind of electric control one-way valve

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Application publication date: 20140924

RJ01 Rejection of invention patent application after publication