CN109236779A - Hydraulic control one-way valve and pressure release assembly - Google Patents
Hydraulic control one-way valve and pressure release assembly Download PDFInfo
- 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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- valve core
- core rod
- valve
- pressure relief
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- 239000007788 liquid Substances 0.000 claims abstract description 41
- 238000007789 sealing Methods 0.000 claims abstract description 23
- 238000009434 installation Methods 0.000 claims description 5
- 238000012423 maintenance Methods 0.000 abstract description 8
- 238000010586 diagram Methods 0.000 description 14
- 238000010276 construction Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 239000012530 fluid Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 206010000372 Accident at work Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/027—Check valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/021—Valves for interconnecting the fluid chambers of an actuator
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/42—Valve seats
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0209—Check valves or pivoted valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K47/00—Means in valves for absorbing fluid energy
- F16K47/04—Means in valves for absorbing fluid energy for decreasing pressure or noise level, the throttle being incorporated in the closure member
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Sliding Valves (AREA)
- Safety Valves (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
本发明公开了一种液控单向阀及泄压总成。液控单向阀包括相对接的导向套和螺套，导向套包括滑移孔和泄压孔，泄压孔的管壁上开设有第一液流口；螺套的管壁上开设有第二液流口；控制阀芯套可滑移地设置在滑移孔内；阀芯杆可滑移地设置在控制阀芯套内；阀芯套设在阀芯杆上，阀芯包密封端和限位端，密封端密封抵接在泄压孔上，阀芯可滑移地设置在螺套内；第一弹性件的一端抵接在限位端，第一弹性件上背向限位端的一端固定设置。泄压总成包括立柱，立柱包括液压回路，还包括液控单向阀，液压回路与第二液流口相连通。本发明提供的液控单向阀及泄压总成，降低了卸载冲击，减小了现场操作的难度，增加了液控单向阀的可靠性且有利于后期维护。
The invention discloses a hydraulically controlled check valve and a pressure relief assembly. The hydraulic control one-way valve includes a guide sleeve and a screw sleeve that are connected to each other. The guide sleeve includes a sliding hole and a pressure relief hole. The pipe wall of the pressure relief hole is provided with a first liquid flow port; Two liquid flow ports; the control valve core sleeve is slidably arranged in the sliding hole; the valve core rod is slidably arranged in the control valve core sleeve; the valve core is sleeved on the valve core rod, and the valve core wraps the sealing end and the limit end, the sealing end is sealed against the pressure relief hole, and the valve core is slidably arranged in the screw sleeve; one end of the first elastic piece abuts against the limit end, and the first elastic piece faces away from the limit One end of the end is fixedly set. The pressure relief assembly includes a column, the column includes a hydraulic circuit, and also includes a hydraulic control check valve, and the hydraulic circuit is communicated with the second liquid flow port. The hydraulically controlled one-way valve and the pressure relief assembly provided by the present invention reduce the unloading impact, reduce the difficulty of on-site operation, increase the reliability of the hydraulically controlled one-way valve and facilitate later maintenance.
Description
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)
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| CN201811285045.2A CN109236779B (en) | 2018-10-31 | 2018-10-31 | Hydraulic control one-way valve and pressure relief assembly |
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| CN201811285045.2A CN109236779B (en) | 2018-10-31 | 2018-10-31 | Hydraulic control one-way valve and pressure relief assembly |
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| CN109236779B CN109236779B (en) | 2020-07-21 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113803314A (en) * | 2021-09-10 | 2021-12-17 | 浙江华益精密机械有限公司 | Direct-acting pressure reducing and releasing valve |
| CN114084339A (en) * | 2021-10-27 | 2022-02-25 | 武汉船用机械有限责任公司 | Oil drainage device for full-rotation rudder propeller release and use method thereof |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN109236779B (en) | 2020-07-21 |
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Address after: 101399 No.27, Linhe Development Zone, Shunyi District, Beijing Patentee after: CCTEG Beijing Tianma Intelligent Control Technology Co.,Ltd. Patentee after: BEIJING CCRI-TIANMA AUTOMATION TECHNOLOGY Co.,Ltd. Address before: No.131, ground floor, Tiandi building, No.5, qingniangou East Road, Hepingli, Chaoyang District, Beijing 100013 Patentee before: BEIJING TIANDI-MARCO ELECTRO-HYDRAULIC CONTROL SYSTEM Co.,Ltd. Patentee before: BEIJING CCRI-TIANMA AUTOMATION TECHNOLOGY Co.,Ltd. |