CN109236779A - Hydraulic control one-way valve and pressure release assembly - Google Patents

Hydraulic control one-way valve and pressure release assembly Download PDF

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Publication number
CN109236779A
CN109236779A CN201811285045.2A CN201811285045A CN109236779A CN 109236779 A CN109236779 A CN 109236779A CN 201811285045 A CN201811285045 A CN 201811285045A CN 109236779 A CN109236779 A CN 109236779A
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CN
China
Prior art keywords
hole
valve core
hydraulic control
way valve
valve
Prior art date
Application number
CN201811285045.2A
Other languages
Chinese (zh)
Inventor
周如林
王伟
刘晓萌
钟声
王统诚
卢海承
Original Assignee
北京天地玛珂电液控制系统有限公司
北京煤科天玛自动化科技有限公司
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Application filed by 北京天地玛珂电液控制系统有限公司, 北京煤科天玛自动化科技有限公司 filed Critical 北京天地玛珂电液控制系统有限公司
Priority to CN201811285045.2A priority Critical patent/CN109236779A/en
Publication of CN109236779A publication Critical patent/CN109236779A/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/027Check valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/021Valves for interconnecting the fluid chambers of an actuator
    • 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
    • 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
    • F16K1/42Valve seats
    • 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
    • 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
    • F16K47/00Means in valves for absorbing fluid energy, e.g. cushioning of opening or closure movement, eliminating of vibrations of the valve member
    • F16K47/04Means in valves for absorbing fluid energy, e.g. cushioning of opening or closure movement, eliminating of vibrations of the valve member for decreasing pressure or noise level, the throttle being incorporated in the closure member

Abstract

The invention discloses a kind of hydraulic control one-way valve and pressure release assemblies.Hydraulic control one-way valve includes the guide sleeve and swivel nut being connected to each other, and guide sleeve includes slip hole and relief hole, and the first liquid stream mouth is offered on the tube wall of relief hole;The second liquid stream mouth is offered on the tube wall of swivel nut;Control valve core retainer plate is slippingly arranged in slip hole;Valve core rod is slippingly arranged in control valve core retainer plate;Spool is set on valve core rod, and spool packet sealed end and positive stop end, sealed end seal against on relief hole, and spool is slippingly arranged in swivel nut;One end of first elastic component is connected to positive stop end, is fixedly installed on the first elastic component backwards to one end of positive stop end.Pressure release assembly includes column, and column includes hydraulic circuit, further includes hydraulic control one-way valve, and hydraulic circuit is connected with the second liquid stream mouth.Hydraulic control one-way valve provided by the invention and pressure release assembly reduce unloading impact, reduce the difficulty of execute-in-place, increase the reliability of hydraulic control one-way valve and be conducive to later maintenance.

Description

Hydraulic control one-way valve and pressure release assembly

Technical field

The present invention relates to technical field of hydraulic more particularly to a kind of hydraulic control one-way valves and pressure release assembly.

Background technique

Hydraulic valve in electrohydraulic control system is the base components in electrohydraulic control system, can be realized by controlling hydraulic valve Each oil cylinder of hydraulic support orderly acts, and the product quality of hydraulic valve directly affects coal mining efficiency.

In the prior art, unloading impact is the components such as valve rod and spool inside hydraulic valve by strong hit, to hydraulic The injury of valve is very big, not only influences the service life of hydraulic valve, is also easy to cause industrial accident.It is mainly unloaded at present using second level For the pressure balancing structure of structure or differential type to mitigate the unloading impact that hydraulic valve is subject to, inventor is realizing innovation and creation It finds in the process, be related to two-stage sealing structure using secondary unloading structure, not only structure is complicated, and on-site maintenance is difficult, and appoints What primary seal failure will cause thrashing, poor reliability;Differential type pressure balancing structure is that structure is complicated, execute-in-place Difficulty, and differential type balanced structure is non-plug-in, is unfavorable for the maintenance in later period.

Therefore, it is necessary to solve above-mentioned technical problem.

Summary of the invention

The present invention provides a kind of hydraulic control one-way valve and pressure release assembly, and to solve problems of the prior art, reduction is unloaded Impact is carried, reduces the difficulty of execute-in-place, increases the reliability of hydraulic control one-way valve and be conducive to later maintenance.

The present invention provides a kind of hydraulic control one-way valves, comprising: the guide sleeve and swivel nut being connected to each other, the guide sleeve include edge The slip hole and relief hole being axially connected offer the first liquid stream mouth on the tube wall of the relief hole;On the swivel nut with institute It states and offers the second liquid stream mouth on the tube wall for the side that relief hole is connected to each other;Control valve core retainer plate, the control valve core retainer plate slip Ground is arranged in the slip hole;Valve core rod, the first end of the valve core rod are slippingly arranged in the control valve core retainer plate; Spool, the seal spool are set on the valve core rod, and the spool includes the sealed end and positive stop end being oppositely arranged, described Sealed end seals against in the opening in the relief hole towards the swivel nut, and the swivel nut is slippingly arranged in the spool It is interior;First elastic component, one end of first elastic component are connected to the positive stop end, backwards to the limit on first elastic component One end fixed setting at position end.

Optionally, the opening sealing of the relief hole is embedded with valve seat, the central axis of the internal diameter of the valve seat and institute The central axis for stating valve seat is collinearly arranged, and the internal diameter of the valve seat is less than the internal diameter of the swivel nut, and the sealed end seals against On the edge of the internal diameter of the valve seat.

Optionally, the hydraulic control one-way valve further includes the second elastic component, and the second end of the valve core rod is fed through the spiral shell It is connected to one end of second elastic component after set, is fixedly installed on second elastic component backwards to one end of the valve core rod.

Optionally, second elastic component is reset spring.

Optionally, the end face of the sealed end of the spool is inclined-plane, in the end face of the sealed end and the valve core rod The direction of vertical range towards the first end far from the valve core rod between mandrel line gradually increases.

Optionally, the swivel nut includes the limit hole being sequentially communicated and current hole, and the internal diameter in the current hole is less than described The internal diameter of limit hole;The spool is slippingly arranged in the limit hole, backwards to the limit on first elastic component The one end at end is connected on current hole towards on the end face of the limit hole.

Optionally, the swivel nut further includes the piston hole being connected with the current hole, far from described on the piston hole The one end in current hole is provided with end cover, and second elastic component is arranged in the piston hole, second elastic component Both ends are connected to respectively correspondingly in the second end and the end cover of the valve core rod.

Optionally, the hydraulic control one-way valve further includes thread piston, and threaded hole, the valve are offered on the thread piston The second end of core bar is threaded in the threaded hole, is connected on second elastic component backwards to one end of the end cover On thread piston.

Optionally, the thread piston includes axially connecting limit section and construction section, and the outer diameter of the construction section is small In the outer diameter of the limit section, the threaded hole is provided in the limit section, and the reset spring is set in the construction section On.

Based on the same inventive concept, the present invention also provides a kind of pressure release assembly, including column, the column includes hydraulic Circuit further includes hydraulic control one-way valve, and the hydraulic circuit is connected with the second liquid stream mouth.

Hydraulic control one-way valve provided by the invention and pressure release assembly, from original state to small flow pressure release state, from small flow Pressure release state to big flow pressure release state, the mobile off-load of the secondary sequence of spool avoids the problem of unloading is impacted, and this structure joins Dynamic formula manipulation, reduces the difficulty of execute-in-place, increases the reliability of hydraulic control one-way valve, valve core rod is successively fed through control valve Core retainer plate, spool, it is easy to disassemble, be conducive to later maintenance, the second liquid stream mouth protects hydraulic timely unloading excessively high on hydraulic circuit Demonstrate,prove column stable operation.

Detailed description of the invention

It below will be by preferred embodiment in attached drawing the present invention is described in detail, to help the purpose of the present invention and excellent is understood Point, in which:

Fig. 1 is the structural schematic diagram for the fluid-control one-way valve closing state that alternative embodiment of the present invention provides.

Fig. 2 is the structural schematic diagram for the small flow pressure release open state of hydraulic control one-way valve that alternative embodiment of the present invention provides.

Fig. 3 is the structural schematic diagram for the hydraulic control one-way valve big flow pressure release open state that alternative embodiment of the present invention provides.

Fig. 4 is the structural schematic diagram for the guide sleeve that alternative embodiment of the present invention provides.

Fig. 5 is the structural schematic diagram for the control valve core retainer plate that alternative embodiment of the present invention provides.

Fig. 6 is the first structure diagram for the pressure release assembly that alternative embodiment of the present invention provides.

Fig. 7 is the second structural schematic diagram of the pressure release assembly that alternative embodiment of the present invention provides.

Specific embodiment

It mentions in the present specification or up, down, left, right, before and after, front, the back side, top, the bottom that may mention etc. Positional terms are defined relative to each construction shown in the drawings, and word "inner" and "outside" refer respectively to direction or remote Direction from geometric center of specific component, they are opposite concepts, and it is therefore possible to can different location, difference according to locating for it Use state and correspondingly changed.So also these or other positional terms should not be construed to restricted use Language.

Fig. 1 is the structural schematic diagram for the fluid-control one-way valve closing state that alternative embodiment of the present invention provides, and Fig. 2 is the present invention The structural schematic diagram for the small flow pressure release open state of hydraulic control one-way valve that alternative embodiment provides, Fig. 3 are the optional implementation of the present invention The structural schematic diagram for the hydraulic control one-way valve big flow pressure release open state that example provides, Fig. 4 alternative embodiment of the present invention provide The structural schematic diagram of guide sleeve, Fig. 5 are the structural schematic diagram for the control valve core retainer plate that alternative embodiment of the present invention provides.Extremely such as Fig. 1 Shown in Fig. 5, the present invention provides a kind of hydraulic control one-way valves, including the guide sleeve 1 being connected to each other and swivel nut 6, control valve core retainer plate 2, valve Core bar 3, spool 5, the first elastic component 7.

Referring to Fig. 1 to Fig. 5, the guide sleeve 1 constitutes the outer skeleton of hydraulic control one-way valve with the swivel nut 6, leads The periphery of set 1 is provided with sealing ring.The guide sleeve 1 includes the slip hole 12 and relief hole 14 being connected along axial direction, institute The internal diameter for stating slip hole 12 is greater than the diameter shrinkage cavity 13, offers the first liquid stream mouth 11 on the tube wall of the relief hole 14;It is described The second liquid stream mouth 61 is offered on the tube wall for the side being connected to each other on swivel nut 6 with the relief hole 14.The control valve core retainer plate 2 can Slippingly it is arranged in the slip hole 12;The control valve core retainer plate 2 is slippingly arranged in the first end of the valve core rod 3 It is interior.Optionally, baffle has can be set backwards to one end of swivel nut 6 in the inner hole of control valve core retainer plate 2, to prevent the first of valve core rod 3 End abjection control valve core retainer plate 2.The sealing of spool 5 is set on the valve core rod 3, and spool 5 is oriented to by valve core rod 3, spool 5 Opposing stationary between valve core rod 3, valve core rod 3 reduces the processing of the inner walls mating surfaces such as swivel nut 6 with 5 associated movement of movable valve plug It is required that improving product processing technique.The spool 5 includes the sealed end and positive stop end being oppositely arranged, and the sealed end is close Envelope is connected to the relief hole 14 towards in the opening of the swivel nut 6, and the spool 5 is slippingly arranged in the swivel nut 6; One end of first elastic component 7 is connected to the positive stop end, consolidates on first elastic component 7 backwards to one end of the positive stop end Fixed setting.

When hydraulic control one-way valve original state provided in an embodiment of the present invention, 5 valve seat of spool, 4 sealed fluid pressure and the first elasticity The pretightning force of part 7 seals against spool 5 in the opening of relief hole 14, and the first liquid stream mouth 11 and the second liquid stream mouth 61 are by spool 5 seal isolation.

Second liquid stream mouth 61 is connected with the hydraulic circuit on the hydraulic cylinder of column, hydraulic circuit it is hydraulic higher when, Backwards to the opening feed liquor of diameter shrinkage cavity 13 on slip hole 12, the equivalent sealing that the effective diameter of control valve core retainer plate 2 is greater than spool 5 is straight Diameter, the valve core rod 3 of the drive of control valve core retainer plate 2 at this time is moved to control valve core retainer plate 2 simultaneously and the end face of diameter shrinkage cavity 13 abuts against.Herein In the process, valve core rod 3 is mobile towards the direction far from relief hole 14 with movable valve plug 5, the sealing state between relief hole 14 and spool 5 It releases, the first liquid stream mouth 11 is connected with the second liquid stream mouth 61, the high pressure fluid flow at the second liquid stream mouth 61 to the first liquid stream At mouth 11, hydraulic control one-way valve is in small flow pressure release state.After the completion of column pressure release, cancel feed flow at slip hole 12, the Spool 5 and 3 Rapid reset of valve core rod are to original state under the action of one elastic component 7.

Backwards to the opening in communication of the diameter shrinkage cavity 13 in the first end of valve core rod 3 and the slip hole 12, with hydraulic The pressure release in circuit, down to after certain threshold value, hydraulic on slip hole 12 is enough to overcome for fluid pressure drop at the second liquid stream mouth 61 The elastic reaction of two liquid stream mouths 61 and the first elastic component 7, valve core rod 3 continue to press on spool 5 far from relief hole 14, at this time valve The state of big opening, i.e. big flow pressure release state are between core 5 and relief hole 14.

Hydraulic control one-way valve provided in an embodiment of the present invention is let out from initial state value to small flow pressure release state, from small flow Pressure condition to big flow pressure release state, the mobile off-load of 5 two sequences of spool avoids the problem of unloading is impacted, and this structure joins Dynamic formula manipulation, reduces the difficulty of execute-in-place, increases the reliability of hydraulic control one-way valve, valve core rod 3 is successively fed through control Valve core housing 2, spool 5, it is easy to disassemble, be conducive to later maintenance.

Further, diameter shrinkage cavity 13 is provided between slip hole 12 and relief hole 14, the internal diameter of diameter shrinkage cavity 13 is less than sliding Hole 12 plays the role of limit towards the end face of slip hole 12 in diameter shrinkage cavity 13, control valve core retainer plate 2 is limited to only in slip hole It is slid in 12, avoids the opening and closing that control valve core retainer plate 2 slides onto the first liquid stream mouth 11 of interference in relief hole 14.

Optionally, the first end of valve core rod 3 to second end is the stepped shaft structure that diameter is gradually reduced, wherein valve core rod 3 First end outer diameter be greater than diameter shrinkage cavity 13 internal diameter, and the second end of valve core rod 3 by sealing ring seal be fed through diameter shrinkage cavity 13。

When hydraulic control one-way valve original state provided in an embodiment of the present invention, 5 valve seat of spool, 4 sealed fluid pressure and the first elasticity The pretightning force of part 7 seals against spool 5 in the opening of relief hole 14, and the first liquid stream mouth 11 and the second liquid stream mouth 61 are sealed Isolation.

Second liquid stream mouth 61 is connected with the hydraulic circuit on the hydraulic cylinder of column, hydraulic circuit it is hydraulic higher when, Backwards to the opening feed liquor of diameter shrinkage cavity 13 on slip hole 12, the equivalent sealing that the effective diameter of control valve core retainer plate 2 is greater than spool 5 is straight Diameter, the valve core rod 3 of the drive of control valve core retainer plate 2 at this time is moved to control valve core retainer plate 2 simultaneously and the end face of diameter shrinkage cavity 13 abuts against, herein In the process, valve core rod 3 is mobile towards the direction far from relief hole 14 with movable valve plug 5, the sealing state between relief hole 14 and spool 5 Contact, the first liquid stream mouth 11 are connected with the second liquid stream mouth 61, and hydraulic control one-way valve is in small flow pressure release state.When column pressure release After the completion, cancel feed flow at slip hole 12, spool 5 and 3 Rapid reset of valve core rod are to initial shape under the action of the first elastic component 7 State.

Backwards to the opening in communication of the diameter shrinkage cavity 13 on one end of valve core rod 3 and the slip hole 12, with hydraulic time The pressure release on road, down to after certain threshold value, hydraulic on slip hole 12 is enough to overcome second for fluid pressure drop at the second liquid stream mouth 61 The elastic reaction of liquid stream mouth 61 and the first elastic component 7, valve core rod 3 continue to press on the movement of spool 5, at this time spool 5 and relief hole The state of big opening, i.e. big flow pressure release state are between 14.

Hydraulic control one-way valve provided in an embodiment of the present invention, from original state to small flow pressure release state, from small flow pressure release State to big flow pressure release state, the mobile off-load of 5 two sequences of spool avoids the problem of unloading is impacted, and this structure links Formula manipulation, reduces the difficulty of execute-in-place, increases the reliability of hydraulic control one-way valve, valve core rod 3 is successively fed through control valve Core retainer plate 2, spool 5, it is easy to disassemble, be conducive to later maintenance.

Preferably, the opening sealing of the relief hole 14 is embedded with valve seat 4, the central axis of the internal diameter of the valve seat 4 Collinearly it is arranged with the central axis of the valve seat 4, the internal diameter of the valve seat 4 is less than the internal diameter of the swivel nut 6, and the sealed end is close It seals on the edge for the internal diameter for being connected to the valve seat 4.It is sealed against by valve seat 4 and spool 5, better ensures that the first liquid stream mouth 11 and the second leakproofness between liquid stream mouth 61.Further, increase in relief hole 14 and be equipped with mounting hole 15, mounting hole 15 it is interior Diameter is greater than the internal diameter of 14 remainder of relief hole, and valve seat 4 is embedded in mounting hole 15, and it is axial fixed that mounting hole 15 plays valve seat 4 The effect of position.The throttle orifice 18 opened up on the hole wall of slip hole 12 can play the role of buffering, and anti-locking system builds the pressure, and increase liquid Control the stability of check valve operation.

Optionally, the hydraulic control one-way valve further includes the second elastic component 9, and the second end of the valve core rod 3 is fed through described It is connected to one end of second elastic component 9 after swivel nut 6, is fixed on second elastic component 9 backwards to one end of the valve core rod 3 Setting.Second elastic component 9 plays the role of the first elastic component 7 to supplement pretightning force, can prevent from malfunctioning and increasing hydraulic control list To the reliability of valve pressure release.

Further, second elastic component 9 is reset spring, and reset spring has pretightning force high, is easy to restore deformation Advantage.Optionally, the first elastic component 7 is also possible to reset spring and is set in the stability for increasing deformation on valve core rod 3.

Preferably, the end face of the sealed end of the spool 5 is inclined-plane, the end face of the sealed end and the valve core rod 3 The direction of vertical range towards the first end far from the valve core rod 3 between central axis gradually increases.The inclined-plane of spool 5 abuts On valve seat 4, it can make effectively to seal between spool 5 and valve seat 4, liquid stream is flowed along inclined-plane, the stationarity of liquid stream can be increased, Further increase the reliability of hydraulically-controlled one-way valve.Optionally, multiple gas pressure relief slots for pressure release are provided on the end face of sealed end, It is mainly used in small flow pressure release, after 5 positive stop end of control valve core is contacted with the end face in current hole, for spool 5 and limit The pressure pressure release in region that hole is formed.

As an optional embodiment, lead between the outer wall of the control valve core retainer plate 2 and the inner wall of the slip hole 12 Installation sealing ring sealed set is crossed, can avoid slip hole 12 carrys out liquid between control valve core retainer plate 2 and the inner wall of slip hole 12 Gap enters relief hole 14, improves the utilization efficiency for carrying out liquid, increases the stability of system work.Similarly, the of the valve core rod 3 By installation sealing ring sealed set between the outer axial face of one end and the inner wall of the control valve core retainer plate 2, slip hole 12 can avoid Gap of the liquid between control valve core retainer plate 2 and the inner wall of slip hole 12 of coming enter relief hole 14, improve the utilization efficiency for carrying out liquid, The stability of increase system.Hydraulic control one-way valve realizes primary seal here, improves the reliability of sealing, reduces answering for structure Miscellaneous degree.

As an optional implementation process, the swivel nut 6 includes the limit hole being sequentially communicated and current hole, the passage The internal diameter in hole is less than the internal diameter of the limit hole;The spool 5 is slippingly arranged in the limit hole, first elasticity One end on part 7 backwards to the positive stop end is connected on current hole towards on the end face of the limit hole.Towards limit on current hole The end face fixed setting in position hole, to fix one end on the first elastic component 7 backwards to positive stop end.When the first elastic component 7 is to reset bullet When spring, the first elastic component 7 can be set on valve core rod 3, and valve core rod 3 is fed through current hole, play axial direction to the first elastic component 7 The effect of positioning increases the stability of system.

Preferably, the swivel nut 6 further includes the piston hole being connected with the current hole, far from described on the piston hole The one end in current hole is provided with end cover 10, and second elastic component 9 is arranged in the piston hole, second elastic component 9 both ends are connected to correspondingly in the second end and the end cover 10 of the valve core rod 3.End cover 10 is to second Elastic component 9 plays positioning action, so that valve core rod 3 limits the second elastic component 9 when compressing the second elastic component 9.

Optionally, the hydraulic control one-way valve further includes thread piston 8, offers threaded hole on the thread piston 8, described The second end of valve core rod 3 is threaded in the threaded hole, ensure that the consistency connected in installation and debugging process and can By property.One end on second elastic component 9 backwards to the end cover 10 is connected on thread piston 8.Thread piston 8 can be with Increase the contact area between the second end and the second elastic component 9 of valve core rod 3, increases the stability of 9 stress of the second elastic component. The end face of the second end of the bottom end and valve core rod 3 of threaded hole is provided with hexagonal structure, increases the stability of connection.

On the basis of the above embodiments, the thread piston 8 includes axially connecting limit section and construction section, described The outer diameter of construction section is less than the outer diameter of the limit section, and the threaded hole is provided in the limit section, the reseting spring sleeve It is located on the construction section.Construction section plays the role of guiding to reset spring, in positive stop end pressed home spring to reset Spring plays axially directed effect, increases stationarity.

Fig. 6 is the first structure diagram for the pressure release assembly that alternative embodiment of the present invention provides, and Fig. 7 is the optional reality of the present invention Second structural schematic diagram of the pressure release assembly of example offer is provided.

As shown in Figures 1 to 7, based on the same inventive concept, the present invention also provides a kind of pressure release assemblies, including column 101, the column 101 includes hydraulic circuit and hydraulic control one-way valve, and the hydraulic circuit is connected with the second liquid stream mouth 61, Excessively high hydraulic timely unloading on second 61 pairs of liquid stream mouth hydraulic circuit guarantees 101 stable operation of column.

Hydraulic control one-way valve provided in an embodiment of the present invention and pressure release assembly, from original state to small flow pressure release state, from Small flow pressure release state to big flow pressure release state, the mobile off-load of 5 two sequences of spool avoids the problem of unloading is impacted, and The manipulation of this structure coordinated type, reduces the difficulty of execute-in-place, increases the reliability of hydraulic control one-way valve, valve core rod 3 is successively worn It is easy to disassemble if crossing control valve core retainer plate 2, spool 5, be conducive to later maintenance, it is excessively high on the second 61 pairs of liquid stream mouth hydraulic circuit Hydraulic timely unloading guarantees 101 stable operation of column.

Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations;Although Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features; And these are modified or replaceed, the range for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution.

Claims (10)

1. a kind of hydraulic control one-way valve characterized by comprising
The guide sleeve and swivel nut being connected to each other, the guide sleeve include the slip hole and relief hole being connected along axial direction, the pressure release The first liquid stream mouth is offered on the tube wall in hole;Is offered on the tube wall for the side being connected to each other on the swivel nut with the relief hole Two liquid stream mouths;Control valve core retainer plate, the control valve core retainer plate are slippingly arranged in the slip hole;
Valve core rod, the first end of the valve core rod are slippingly arranged in the control valve core retainer plate;
Spool, the seal spool are set on the valve core rod, and the spool includes the sealed end and positive stop end being oppositely arranged, The sealed end seals against in the opening in the relief hole towards the swivel nut, and the spool is slippingly arranged in described In swivel nut;
First elastic component, one end of first elastic component are connected to the positive stop end, backwards to described on first elastic component One end of positive stop end is fixedly installed.
2. hydraulic control one-way valve according to claim 1, which is characterized in that the opening sealing of the relief hole is embedded with valve Seat, the central axis of the internal diameter of the valve seat and the central axis of the valve seat are collinearly arranged, and the internal diameter of the valve seat is less than institute The internal diameter of swivel nut is stated, the sealed end seals against on the edge of the internal diameter of the valve seat;It is opened on the hole wall of the slip hole Equipped with throttle orifice.
3. hydraulic control one-way valve according to claim 1, which is characterized in that the hydraulic control one-way valve further includes the second elasticity Part, the second end of the valve core rod are fed through one end that second elastic component is connected to after the swivel nut, second elasticity It is fixedly installed on part backwards to one end of the valve core rod.
4. hydraulic control one-way valve according to claim 3, which is characterized in that second elastic component is reset spring.
5. hydraulic control one-way valve according to claim 4, which is characterized in that the end face of the sealed end of the spool is inclined-plane, Vertical range between the end face of the sealed end and the central axis of the valve core rod is towards the first end far from the valve core rod Direction gradually increase.
6. hydraulic control one-way valve according to claim 5, which is characterized in that the swivel nut include the limit hole that is sequentially communicated and Current hole, the internal diameter in the current hole are less than the internal diameter of the limit hole;The limit hole is slippingly arranged in the spool Interior, one end on first elastic component backwards to the positive stop end is connected on current hole towards on the end face of the limit hole.
7. hydraulic control one-way valve according to claim 6, which is characterized in that the swivel nut further includes being connected with the current hole Logical piston hole, one end on the piston hole far from the current hole are provided with end cover, the second elastic component setting In the piston hole, the both ends of second elastic component are connected to second end and the institute of the valve core rod respectively correspondingly It states on end cover.
8. hydraulic control one-way valve according to claim 7, which is characterized in that the hydraulic control one-way valve further includes thread piston, Threaded hole is offered on the thread piston, the second end of the valve core rod is threaded in the threaded hole, and described second One end on elastic component backwards to the end cover is connected on thread piston.
9. hydraulic control one-way valve according to claim 8, which is characterized in that the thread piston includes axially connecting limit Position section and construction section, the outer diameter of the construction section are less than the outer diameter of the limit section, and the threaded hole is provided with the limit section On, the reset spring is set on the construction section.
10. a kind of pressure release assembly, including column, the column include hydraulic circuit, which is characterized in that further include claim 1- Hydraulic control one-way valve described in 9 any one, the hydraulic circuit are connected with the second liquid stream mouth.
CN201811285045.2A 2018-10-31 2018-10-31 Hydraulic control one-way valve and pressure release assembly CN109236779A (en)

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DE4424724C2 (en) * 1994-07-13 1996-07-04 Siemens Ag Control valve
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CN201934108U (en) * 2010-12-13 2011-08-17 中国航天科技集团公司烽火机械厂 Hydraulic control one-way valve
CN202832578U (en) * 2012-09-13 2013-03-27 巨隆集团芜湖兴隆液压有限公司 Large-flow hydraulic control one-way valve
KR101293800B1 (en) * 2008-11-21 2013-08-06 현대중공업 주식회사 Pilot for 2-step pressure control
CN203463121U (en) * 2013-09-17 2014-03-05 叶茂 Plug-in type conical surface rigidity seal hydraulic control one-way valve
CN203488193U (en) * 2013-08-14 2014-03-19 深圳市神拓机电设备有限公司 Hydraulic control check valve
US20150074938A1 (en) * 2009-03-26 2015-03-19 Alamo Group, Inc. Hydraulic Fluid Flow Management System and Method
CN204267804U (en) * 2014-11-25 2015-04-15 浙江众博矿业机械有限公司 Pilot operated check valve
CN204267803U (en) * 2014-11-25 2015-04-15 浙江众博矿业机械有限公司 Pilot operated check valve
CN205841886U (en) * 2016-07-25 2016-12-28 深圳市神拓机电股份有限公司 A kind of hydraulic control one-way valve

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4424724C2 (en) * 1994-07-13 1996-07-04 Siemens Ag Control valve
CN101162024A (en) * 2007-11-29 2008-04-16 贵州枫阳液压有限责任公司 Multifunctional hydraulic lock
KR101293800B1 (en) * 2008-11-21 2013-08-06 현대중공업 주식회사 Pilot for 2-step pressure control
US20150074938A1 (en) * 2009-03-26 2015-03-19 Alamo Group, Inc. Hydraulic Fluid Flow Management System and Method
CN201934108U (en) * 2010-12-13 2011-08-17 中国航天科技集团公司烽火机械厂 Hydraulic control one-way valve
CN202832578U (en) * 2012-09-13 2013-03-27 巨隆集团芜湖兴隆液压有限公司 Large-flow hydraulic control one-way valve
CN203488193U (en) * 2013-08-14 2014-03-19 深圳市神拓机电设备有限公司 Hydraulic control check valve
CN203463121U (en) * 2013-09-17 2014-03-05 叶茂 Plug-in type conical surface rigidity seal hydraulic control one-way valve
CN204267804U (en) * 2014-11-25 2015-04-15 浙江众博矿业机械有限公司 Pilot operated check valve
CN204267803U (en) * 2014-11-25 2015-04-15 浙江众博矿业机械有限公司 Pilot operated check valve
CN205841886U (en) * 2016-07-25 2016-12-28 深圳市神拓机电股份有限公司 A kind of hydraulic control one-way valve

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