CN107859524A - The core assembly of hydraulic control one-way valve - Google Patents

The core assembly of hydraulic control one-way valve Download PDF

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Publication number
CN107859524A
CN107859524A CN201711018458.XA CN201711018458A CN107859524A CN 107859524 A CN107859524 A CN 107859524A CN 201711018458 A CN201711018458 A CN 201711018458A CN 107859524 A CN107859524 A CN 107859524A
Authority
CN
China
Prior art keywords
valve
core
hydraulic control
big
differential
Prior art date
Application number
CN201711018458.XA
Other languages
Chinese (zh)
Inventor
李子昂
李福洪
朱述群
谢瑞
Original Assignee
鸿大智能机械有限公司
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Application filed by 鸿大智能机械有限公司 filed Critical 鸿大智能机械有限公司
Priority to CN201711018458.XA priority Critical patent/CN107859524A/en
Publication of CN107859524A publication Critical patent/CN107859524A/en

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Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/50Component parts or details of props
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D23/00Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
    • E21D23/16Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices

Abstract

The invention discloses a kind of core assembly of hydraulic control one-way valve, including swivel nut, feed liquor set, valve seat, valve pocket, the big valve core being arranged inside valve pocket, the small valve core being arranged inside big valve core, movably it is arranged inside the valve pocket and for the differential valve element for controlling the big valve core to move and is arranged inside valve pocket and for applying the pressure regulating device of elastic acting force to differential valve element.The core assembly of hydraulic control one-way valve of the present invention, by setting differential valve element inside valve pocket, the automatically unloading of hydraulic control one-way valve can be realized, and by setting the operating pressure of pressure regulating device hydraulic control one-way valve to adjust, hydraulic control one-way valve is can adapt to the job requirement of different pressures, improve the versatility of hydraulic control one-way valve;Pressure regulating device is arranged on to the inside of valve pocket, improves the integrally-built compactedness of core assembly, core assembly integrated level is high, easy disassembly.

Description

The core assembly of hydraulic control one-way valve

Technical field

The present invention relates to the Hydraulic Elements in coal mine hydraulic supporting hydraulic circuit, and specifically, the present invention relates to a kind of liquid Control the core assembly of check valve.

Background technology

At present, hydraulic control one-way valve can only be realized to associated oil cylinder or column used in coal mine fully-mechanized mining hydraulic support The single-chamber feed liquor locking of jack and time liquid release.When pressure is increased beyond the operating pressure setting value of hydraulic control one-way valve, only External overflow valve (i.e. safety valve) release can be relied on, the liquid of outflow is discharged to outside hydraulic system, both pollutes underground environment, again Cause to waste.And the operating pressure of existing hydraulic control one-way valve is unadjustable, it is impossible to the job requirement of different pressures is adapted to, Poor universality.

The content of the invention

It is contemplated that at least solves one of technical problem present in prior art.Therefore, the present invention provides a kind of liquid Control the core assembly of check valve, it is therefore an objective to realize the automatically unloading of hydraulic control one-way valve.

To achieve these goals, the technical scheme taken of the present invention is:The core assembly of hydraulic control one-way valve, including spiral shell It is set, feed liquor set, valve seat, valve pocket, the big valve core being arranged inside valve pocket, the small valve core being arranged inside big valve core, moveable It is arranged inside the valve pocket and is used for the differential valve element for controlling the big valve core to move and is arranged inside valve pocket and uses In the pressure regulating device for applying elastic acting force to differential valve element.

The valve pocket have allow liquid by and flow liquid into inside valve pocket with promote that the differential valve element moves the One liquid pass hole, differential valve element drive the big valve core to be directed away from the direction of valve seat and moved while movement.

The differential valve element, which has, allows the second liquid pass hole that liquid connects by and with first liquid pass hole.

The big valve core is sheathed on the differential valve element, and link gear is provided between big valve core and differential valve element, differential Valve element and small valve core are provided with spring, and link gear is arranged to enable differential valve element to drive big valve core to be directed away from release The direction movement of the valve seat.

The big valve core has the mounting hole for allowing the link gear to be embedded in, and the differential valve element, which has, makes link gear embedding The chute entered, link gear include the sliding part in insertion mounting hole and chute and are arranged in mounting hole and sliding part is risen The locating part of position-limiting action, sliding part are spherical, and for locating part with big valve core to be threadedly coupled, mounting hole is internal thread hole.

The swivel nut is connected by screw and feed liquor set, and feed liquor set is with the internal thread hole for allowing screw to insert, swivel nut With the lock groove for allowing screw to insert, for feed liquor set with the valve pocket to be threadedly coupled, the valve body of swivel nut and hydraulic control one-way valve is spiral shell Line connects.

The lock groove is to be set on the periphery of the swivel nut along the annular groove entirely circumferentially extended, the screw Multiple and multiple screws are to be uniformly distributed circumferentially.

The differential valve element includes feed liquor portion and the support sector being connected, and the big valve core is sheathed in feed liquor portion and feed liquor Portion is used to provide big valve core guide effect, and the chute is along entirely circumferentially extending on the periphery for be arranged at feed liquor portion Annular groove, the diameter of the support sector be more than on the sealing surface of the big valve core with the diameter at valve seat contact site, branch The diameter for holding portion is more than the diameter of the feed liquor portion.

The pressure regulating device includes movably being arranged at the spring base contacted inside the valve pocket and with differential valve element, set It is placed in inside valve pocket and is the voltage regulation screw being threadedly coupled and the pressure regulation being arranged between voltage regulation screw and spring base with valve pocket Spring structure, valve pocket, which has, allows the avoid holes that spring base passes through.

The spring base is made up of limiting section, first boss and second boss, and first boss and second boss exist respectively The side of limiting section is fixedly connected with limiting section and the overall diameter of limiting section is more than the overall diameter of first boss and second boss, Second boss is inserted in the pressure spring, and first boss is used to contact with the differential valve element.

The core assembly of hydraulic control one-way valve of the present invention, by setting differential valve element inside valve pocket, it is possible to achieve hydraulic control list To the automatically unloading of valve, and by setting the operating pressure of pressure regulating device hydraulic control one-way valve to adjust, make fluid-control one-way Valve can adapt to the job requirement of different pressures, improve the versatility of hydraulic control one-way valve;Pressure regulating device is arranged on valve pocket Inside, the integrally-built compactedness of core assembly is improved, core assembly integrated level is high, easy disassembly.

Brief description of the drawings

This specification includes the following drawings, and shown content is respectively:

Fig. 1 is the sectional view of hydraulic control one-way valve;

Fig. 2 is the sectional view of core assembly of the present invention;

Fig. 3 is the sectional view of valve body;

Fig. 4 is the sectional view of feed liquor set;

Fig. 5 is the sectional view of valve rod;

Fig. 6 is the sectional view of valve pocket;

Fig. 7 is the sectional view of swivel nut;

Fig. 8 is the sectional view of big valve core;

Fig. 9 is the sectional view of small valve core;

Figure 10 is the sectional view of differential valve element;

Figure 11 is the sectional view of spring base;

Figure 12 is the use state diagram of hydraulic control one-way valve;

In figure mark for:

1st, screw;

2nd, valve body;201st, valve pocket;202nd, the first opening;203rd, the second opening;204th, the 3rd opening;205th, the 4th opening; 206th, the 5th opening;207th, the 6th opening;208th, the 7th opening;209th, the 8th opening;

3rd, feed liquor set;301st, the 3rd liquid pass hole;302nd, internal thread hole;303rd, the first accommodating cavity;304th, the second accommodating cavity; 305th, the 3rd accommodating cavity;306th, the 4th accommodating cavity;307th, the 5th accommodating cavity;

4th, valve pocket;401st, the first liquid pass hole;402nd, the 4th liquid pass hole;403rd, directed cavity;404th, pressure-regulating portion;405th, avoid Hole;406th, pressure regulating cavity;407th, connecting portion;408th, the first guide part;409th, the second guide part;410th, flange;

5th, swivel nut;501st, the 5th liquid pass hole;502nd, the first working hole;503rd, the 6th accommodating cavity;504th, lock groove;

6th, push rod;601st, push rod body;602nd, piston;

7th, differential valve element;701st, the second liquid pass hole;702nd, chute;703rd, support sector;704th, feed liquor portion;705th, admission chamber;

8th, spring base;801st, limiting section;802nd, first boss;803rd, second boss;

9th, big valve core;901st, mounting hole;902nd, hollow cavity;

10th, small valve core;11st, valve seat;12nd, the first spring;13rd, second spring;

14th, pressure spring;15th, voltage regulation screw;16th, sliding part;17th, locating part;18th, air storing cavity.

Embodiment

Below against accompanying drawing, by the description to embodiment, embodiment of the invention is made further details of Explanation, it is therefore an objective to help design of the those skilled in the art to the present invention, that technical scheme has is more complete, accurate and deep Understand, and contribute to its implementation.

As shown in Figures 1 to 12, the invention provides a kind of hydraulic control one-way valve, including the valve element group of valve body 2 and the present invention Part, the core assembly of hydraulic control one-way valve of the invention include push rod, swivel nut 5, feed liquor set 3, valve seat 11, valve pocket 4, the first spring 12nd, second spring 13, the big valve core 9 being arranged inside valve pocket 4, the small valve core 10, moveable that is arranged inside big valve core 9 It is arranged at the inside of valve pocket 4 and inside and use for controlling the differential valve element 7 that big valve core 9 moves with being arranged at valve pocket 4 In the pressure regulating device for applying elastic acting force to differential valve element 7.

Specifically, as depicted in figs. 1 and 2, valve pocket 4, big valve core 9, small valve core 10, feed liquor set 3, swivel nut 5, valve seat 11, Differential valve element 7, the first spring 12, second spring 13 and pressure regulating device etc. form the core assembly of plug-in, the present invention of formation Core assembly be structure as a whole.Feed liquor set 3 positioned at swivel nut 5 and valve pocket 4 between, valve seat 11 be arranged at feed liquor cover 3 inside and Valve seat 11 is engaged realization sealing with big valve core 9, and big valve core 9 has the sealing surface for being used for being in contact with valve seat 11 and the sealing Face is circular conical surface.Swivel nut 5 and feed liquor set 3 are sheathed on push rod, and big valve core 9 and differential valve element 7 are movably to be arranged at valve pocket 4 inside, small valve core 10 are the inside for being movably arranged at big valve core 9, and push rod is used to apply big valve core 9 and small valve core 10 Add pressure vertically, push rod can promote the inside of big valve core 9 towards valve pocket 4 mobile and promote small valve core 10 in big valve core 9 Inside moved towards close to the direction of differential valve element 7, big valve core 9 is separated with valve seat 11, realize opening for check valve Open.Swivel nut 5 is with valve body 2 to be threadedly coupled, and feed liquor set 3 is clipped between swivel nut 5 and valve pocket 4 and feed liquor set 3 and swivel nut 5 and valve pocket 4 It is fixedly connected, valve pocket 4 is used in the axial direction play big valve core 9 and differential valve element 7 position-limiting action, and it is right in the axial direction that swivel nut 5 is used for Push rod plays position-limiting action, swivel nut 5 and valve body 2 and for being connected with the upright post jack of outside.Upright post jack is a kind of single living Stopper rod hydraulic cylinder, upright post jack can extend and shrink.When upright post jack is extended, to carry out setting prop action.Column When jack is shunk, drop post action.

As shown in Figure 1 to Figure 3, the inside of valve body 2 has a valve pocket 201 for accommodating core assembly of the present invention, valve pocket 201 be One end end face of valve body 2 extends the circular cavity to be formed initially towards the inside of valve body 2, and core assembly of the invention integrally inserts In the valve pocket of valve body 2 and swivel nut 5 and valve body 2 is are threadedly coupled, and realize fixation of the core assembly on valve body 2.Valve pocket is in valve body An opening is formed on 2 one end end face and sets the opening as the first opening 202, core assembly of the invention is in the first opening Inserted at 202 in valve pocket, to be threadedly coupled in core assembly of the invention insertion valve pocket and with valve body 2, valve element group of the invention Part is arranged to be threadedly coupled with valve body 2, easy disassembly and maintenance.Valve body 2 is provided with the second opening 203, the second opening 203 In in the axial direction of valve pocket and the second opening 203 connect with valve pocket, the first opening 202 and second to be open 203 be to be oppositely arranged.Valve In the opening 203 of the insertion of set 4 second, valve pocket 4 simultaneously closes second opening 203.

As shown in figures 1 and 3, valve body 2 is rectangular block shape structure, and valve body 2 has first end face, second end face, the 3rd end Face, the 4th end face, the 5th end face and the 6th end face, first end face and second end face are the both ends end on the length direction of valve body 2 Face, first end face and second end face are parallel and perpendicular with the length direction of valve body 2, and the first opening 202 is arranged at first end On face, the second opening 203 is arranged in second end face.3rd end face and the 4th end face are the both ends on the width of valve body 2 End face, the 3rd end face and the 4th end face are parallel and perpendicular with the width of valve body 2, and the 5th end face and the 6th end face are valve Both ends end face on the thickness direction of body 2, the 5th end face and the 6th end face are parallel and perpendicular with the thickness direction of valve body 2. Valve body 2 be provided with one first opening 202, one second opening 203, one the 3rd opening 204, one the 4th opening 205, One the 5th opening 208 of opening 207, one the 7th of opening 206, one the 6th and one the 8th opening 209, the second opening 203 As the second working hole A, the 3rd opening 204 is used as the 3rd working hole PA for allowing liquid to pass through, and the conducts of the 4th opening 205 allow liquid The 4th working hole PA that body passes through, the 5th opening 206 is made as the 5th working hole A1 for allowing liquid to pass through, the 6th opening 207 For the 6th working hole A2 for allowing liquid to pass through, the 7th opening 208 is as the 7th working hole PB for allowing liquid to pass through, the 8th opening 209 as the 8th working hole PB for allowing liquid to pass through, swivel nut 5 allows the first working hole B that liquid passes through provided with one, swivel nut 5 be to be connected at the first working hole B by oil pipe with the upright post jack of outside.Valve body 2 passes through oil at the 5th opening 206 Manage and be connected with the upright post jack of outside, flowed into the liquid in valve pocket by the 5th opening 206 in upright post jack, column Liquid in jack is flowed into valve pocket by the 5th opening 206.

As shown in Fig. 1, Fig. 3 and Fig. 9, the 3rd 204 (i.e. the 3rd working hole PA) of opening and the 7th 208 (i.e. the 7th works of opening Make mouth PB) it is used to be connected with the three position four-way directional control valve of outside, 206 (i.e. the 5th working holes of opening of the first working hole B and the 5th A1) it is used to be connected with the upright post jack of outside.4th 205 (i.e. the 4th working hole PA) of opening and the 8th are open 209 (i.e. the Eight working hole PB) it can be used for the hydraulic control one-way valve of adjoining frame, the 4th opening 205 is opened with the 3rd of the hydraulic control one-way valve of adjacent frame Mouth 204 is connected, and the 8th opening 209 is connected with the 7th opening 208 of the hydraulic control one-way valve of adjacent frame, i.e., when two hydraulic control one-way valves It is connected in use, the 4th opening 205 and the 3rd opening 204 of another hydraulic control one-way valve of one of hydraulic control one-way valve Connection, the 8th opening 209 of one of hydraulic control one-way valve are connected with the 7th opening 208 of another hydraulic control one-way valve.6th 207 (i.e. the 6th working hole A2) of opening can be used for being connected with the pressure gauge of outside or pressure sensor to meet that other will The needs asked, the 6th opening 207 can also use chock to be blocked when need not using, and the 6th opening 207 can seal Close, fluid can not pass through after closing.

As shown in figures 1 and 3, the opening 206 of the 3rd opening the 204, the 5th and the 7th opening 208 are from the 3rd end of valve body 2 The axis phase of the circular hole that face extends initially towards the inside of valve body 2, the opening 206 of the 3rd opening the 204, the 5th and the 7th opening 208 The axis perpendicular of valve pocket 201 parallel and with valve body 2, the 3rd opening the 204, the 5th opening 206 and the 7th opening 208 and with Valve pocket 201 is connected, and the opening 206 of the 3rd opening the 204, the 5th and the 7th opening 208 are in equal with the length direction of valve body 2 On capable same straight line and the 3rd opening 204 and positioned at the 5th opening 206 and the 7th opening 208 between.4th opening 205, the Six openings 207 and the 8th are open 209 as the circular holes from the 4th end face of valve body 2 initially towards the inside extension of valve body 2, and the 4th The axis of the opening 209 of the opening of opening the 205, the 6th 207 and the 8th is parallel and the axis perpendicular of valve pocket 201 with valve body 2, The opening 207 of 4th opening the 205, the 6th and the 8th opening 209 are connected with valve pocket 201, the opening 207 of the 4th opening the 205, the 6th It is in the 8th opening 209 on the same straight line parallel with the width of valve body 2 and the 4th opening 205 is opened positioned at the 8th Between the opening 207 of mouth 209 and the 6th, the 3rd opening 204 and the 4th opening 205 are in parallel with the width of valve body 2 On same straight line, the 5th opening 206 and the 6th opening 207 are on the same straight line parallel with the width of valve body 2, 7th opening 208 and the 8th opening 209 are on the same straight line parallel with the width of valve body 2.Second opening 203 For the circular hole extended from the second end face of valve body 2 initially towards the inside of valve body 2, the first opening 202 is arranged at the of valve body 2 On end face, first opening 202, second opening 203 and valve pocket 201 for be coaxially disposed and valve pocket 201 positioned at first opening 202 And second opening 203 between.

As shown in Figure 1 to Figure 3, after in core assembly of the invention insertion valve pocket 201, in the opening 203 of the insertion of valve pocket 4 second And by second opening 203 closing, second opening 203 without using.3rd opening 204 and the 4th opening 205 are positioned at feed liquor set 3 Radially and the 3rd opening 204 and the 4th opening 205 are respectively positioned at the side of feed liquor set 3 and the 3rd opening 204 and the 4th opening 205 with feed liquor set 3 inner chambers connect, the 5th opening 206 and the 6th opening 207 positioned at valve pocket 4 radially and the 5th be open 206 and the 6th opening 207 respectively be located at valve pocket 4 side, the 7th opening 208 and the 8th opening 209 be located at swivel nut 5 radial direction Upper and the 7th opening 208 and the 8th opening 209 respectively positioned at the side of swivel nut 5 and the 7th opening 208 and the 8th opening 209 with The inner chamber connection of swivel nut 5.

As depicted in figs. 1 and 2, valve seat 11 is arranged at the inside of feed liquor set 3, and valve seat 11 is in the axial direction by feed liquor set 3 and valve Set 4 is fixedly clamped.Valve seat 11 be cirque structure and valve seat 11 and feed liquor set 3 and valve pocket 4 to be coaxially disposed, valve seat 11 it is interior There is the centre bore for accommodating big valve core 9, the diameter of the centre bore of valve seat 11 is less than the overall diameter of big valve core 9 at portion center.Big valve Core 9 is made with valve seat 11 of metal material, and big valve core 9 is identical with the material of valve seat 11, and the hardness of valve seat 11 is less than big valve The hardness of core 9, big valve core 9 are tightly connected with valve seat 11 to be hard, enhance sealing property.Big valve core 9 and valve seat 11 use metal Material is made, and to use vacuum hardening technology, is refined again after quenching, and hardness is high, hard close relative to the sealing of softwood matter Seal not only good seal performance, moreover it is possible to resistance to super-pressure, the service life length of hydraulic control one-way valve.The sealed end of big valve core 9 is frustum knot Structure, the sealing surface of big valve core 9 are circular conical surface, the sealed end of big valve core 9 can stretch into the centre bore of valve seat 11 and with the phase of valve seat 11 Sealing is realized in contact, and push rod only starts to contact with big valve core 9 at valve seat 11, and the structure of big valve core 9 is simpler, fluid-control one-way The overall more compact structure of valve.In addition, small valve core 10 is also made of metal material, valve seat 11, big valve core 9 and small valve core 10 Material it is identical.

As shown in Figure 1, Figure 2 with shown in Fig. 5, push rod is the inside for being movably arranged at swivel nut 5 and feed liquor set 3, and push rod includes The piston 602 and push rod body 601 being fixedly and coaxially connected, piston 602 and push rod body 601 are cylinder, piston 602 it is straight Footpath is more than the diameter of push rod body 601, and push rod body 601 is used to contact with big valve core 9 and small valve core 10, to be opened in check valve Big valve core 9 and small valve core 10 is promoted to be moved linearly towards the direction close to differential valve element 7 when opening.Piston 602 is located at swivel nut 5 inside, swivel nut 5 and feed liquor set 3 are engaged, for playing position-limiting action to piston 602 in the axial direction.Push rod body 601 is inserted Enter the inside of feed liquor set 3 and swivel nut 5, the diameter of the centre bore of valve seat 11 is more than the diameter of push rod body 601 so that push rod sheet Body 601 is inserted into the centre bore of valve seat 11, to be contacted with big valve core 9 and small valve core 10.Second spring 13 is used for push rod Apply the active force for making it be moved axially towards the direction away from big valve core 9 and small valve core 10, second spring 13 is arranged In on push rod body 601 and second spring 13 be clipped in piston 602 and feed liquor set 3 between, one end of second spring 13 is against feed liquor On the inwall of set 3, the other end is against on piston 602, and second spring 13 is cylindrically coiled spring.

As shown in Figure 1, Figure 2 and Figure 4, feed liquor set 3 is both ends open and the cylinder of inner hollow, and one end of swivel nut 5 is inserted Enter in feed liquor set 3 and be fixedly connected with feed liquor set 3, in the other end insertion valve pocket 4 of feed liquor set 3 and feed liquor set 3 is with valve pocket 4 Threaded connection, the end of feed liquor set 3 are provided with external screw thread, and the end of valve pocket 4 is provided with internal thread.Feed liquor set 3, which is provided with, allows liquid to lead to The 3rd liquid pass hole 301 crossed, the 3rd liquid pass hole 301 is to be obliquely installed on feed liquor set 3, and the axis of the 3rd liquid pass hole 301 is with entering There is angle between the axis of liquid set 3 and the angle is acute angle.3rd liquid pass hole 301 is to run through to set in the side wall of feed liquor set 3 The circular hole put, the 3rd liquid pass hole 301 are evenly distributed multiple, the 3rd liquid pass hole 301 and feed liquor set 3 in the side wall of feed liquor set 3 Hollow cavity connection and all 3rd liquid pass holes 301 be distributed in around hollow cavity, the 3rd liquid pass hole 301 and with valve body 2 On the 3rd opening 204 205 be connected with the 4th opening.3rd liquid pass hole 301 is towards outside in the side wall of feed liquor set 3 The position of valve seat 11 tilt extension, axis that the axis of the 3rd liquid pass hole 301 and feed liquor cover 3 intersects and between the two Angle is less than 90 degree.3rd liquid pass hole 301 is designed using inclined hole so that liquid is more flowed by being flowed during three liquid pass holes 301 Freely, drag losses is smaller, and is easier to process.

As shown in Figure 1, Figure 2 and Figure 4, the inside of feed liquor set 3, which is provided with, accommodates the first accommodating cavity 303 of swivel nut 5, accommodates second Second accommodating cavity 304 of spring 13 and push rod body 601, the 3rd accommodating cavity 305 and the 4th of receiving push rod body 601 are accommodating Chamber 306 and the 5th accommodating cavity 307 for accommodating valve seat 11, the first accommodating cavity 303, the second accommodating cavity 304, the 3rd accommodating cavity 305th, the 4th accommodating cavity 306 and the 5th accommodating cavity 307 are to be sequentially arranged along the axial direction of feed liquor set 3, the first accommodating cavity 303, second Accommodating cavity 304, the 3rd accommodating cavity 305, the 4th accommodating cavity 306 and the 5th accommodating cavity 307 are circular cavity and the first accommodating cavity 303rd, the second accommodating cavity 304, the 3rd accommodating cavity 305, the 4th accommodating cavity 306 and the 5th accommodating cavity 307 is are coaxially disposed, and first The diameter of accommodating cavity 303 is more than the diameter of the second accommodating cavity 304, and the diameter of the second accommodating cavity 304 is more than the 3rd accommodating cavity 305 Diameter, the diameter of the 4th accommodating cavity 306 is more than the diameter of the 3rd accommodating cavity 305, and the diameter of the 5th accommodating cavity 307 is more than the The diameter of four accommodating cavities 306, the diameter of the 3rd accommodating cavity 305 is equal with the diameter of push rod body 601, the insertion of swivel nut 5 the It is fixedly connected in one accommodating cavity 303 and with feed liquor set 3, the diameter of the second accommodating cavity 304 is less than the diameter of piston 602 so that living Plug 602 is only capable of moving in the inside of swivel nut 5.First accommodating cavity 303, the second accommodating cavity 304, the 3rd accommodating cavity 305, Four accommodating cavities 306 and the 5th accommodating cavity 307 form the hollow cavity of feed liquor set 3, the first accommodating cavity 303 and the 5th accommodating cavity 307 Respectively opening, the diameter phase of the overall diameter of valve seat 11 and the 5th accommodating cavity 307 are formed on the both ends end face of feed liquor set 3 It is placed in Deng, valve seat 11 in the 5th accommodating cavity 307 and valve seat 11 is engaged with feed liquor set 3 by valve pocket 4 and is fixedly clamped.3rd crosses liquid Hole 301 connects with the 4th accommodating cavity 306 of feed liquor set 3, and all 3rd liquid pass holes 301 are distributed in the 4th accommodating cavity 306 Around, the 4th accommodating cavity 306 simultaneously connects with the centre bore of valve seat 11.

As shown in Figure 1, Figure 2 and Figure 7, swivel nut 5 is both ends open and the cylinder of inner hollow, and swivel nut 5 inserts valve body 2 In and with valve body 2 to be threadedly coupled, swivel nut 5 is provided with external screw thread, and the inner headed face of the valve pocket of valve body 2 is provided with internal thread.Swivel nut 5 are used to be connected with the upright post jack of outside, are flowed into the fluid in hydraulic control one-way valve by swivel nut 5 in upright post jack, Fluid in upright post jack can be also flowed into hydraulic control one-way valve by swivel nut 5.One end of swivel nut 5 is located in the valve pocket of valve body 2, The other end of swivel nut 5 extend out to the outside of valve body 2, is easy to be connected with upright post jack by oil pipe.The inside of swivel nut 5 is provided with First working hole 502 (i.e. the first working hole B) and the 6th accommodating cavity 503 for accommodating valve rod, the first working hole 502 are from swivel nut 5 External part end face start along swivel nut 5 be axially facing swivel nut 5 inside extend circular hole, one end of swivel nut 5 is external part And the external part is located at the outside of valve body 2, the other end of swivel nut 5 is inserted in the valve pocket of valve body 2 for insertion end and the insertion end. The diameter of 6th accommodating cavity 503 is identical with the overall diameter size of piston 602, and the diameter of the first working hole 502 is less than the 6th and housed The diameter of chamber 503, the first working hole 502 connect with the 6th accommodating cavity 503.6th accommodating cavity 503 is to be arranged at the interior of swivel nut 5 The circular cavity in portion, the 6th accommodating cavity 503 are to be axially facing feed liquor along feed liquor set 3 since the end face of the insertion end of swivel nut 5 The inside of set 3 extends the cavity to be formed, and the 6th accommodating cavity 503 and the first working hole 502 are coaxial.It is additionally provided with swivel nut 5 and allows liquid The 5th liquid pass hole 501 passed through, the 5th liquid pass hole 501 are to be obliquely installed on swivel nut 5, the axis and spiral shell of the 5th liquid pass hole 501 The axis perpendicular of set 5.To run through the circular hole set in the side wall of swivel nut 5, the 5th liquid pass hole 501 is set 5th liquid pass hole 501 Multiple and multiple 5th liquid pass holes 501 are put to be uniformly distributed circumferentially in the side wall of swivel nut 5, multiple 5th liquid pass holes 501 divide Cloth is connected in the surrounding of the first working hole 502 and the first working hole 502 with the 5th liquid pass hole 501, and the 5th liquid pass hole 501 is simultaneously It is connected with the 7th opening 208 on valve body 2 and the 8th opening 209.

As shown in Figure 1, Figure 2, shown in Fig. 4 and Fig. 7, swivel nut 5 is connected by screw 1 with feed liquor set 3, and swivel nut 5 is relative to feed liquor set 3 can be rotated around its axis, and feed liquor set 3 has the internal thread hole 302 for allowing screw 1 to insert, and swivel nut 5, which has, allows screw 1 to insert The lock groove 504 entered, for feed liquor set 3 with valve pocket 4 to be threadedly coupled, swivel nut 5 is to be threadedly coupled with valve body 2.Compared to prior art Hydraulic control one-way valve core assembly in feed liquor set 3 be connected through a screw thread with swivel nut 5, and core assembly of the invention enters Liquid set 3 is linked into an integrated entity structure with swivel nut 5 by screw 1, because being between feed liquor set 3 and swivel nut 5 when avoiding the core assembly from dismounting It is threadedly coupled and loosens, cause feed liquor set 3 to be split away off from swivel nut 5, passes through the feed liquor of screw 1 set 3 and swivel nut 5 Link into an integrated entity, be not in the problem of coming off, improve the reliability connected between feed liquor set 3 and swivel nut 5, and improve valve Operating efficiency when core assembly dismounts.

As shown in Figure 1, Figure 2, shown in Fig. 4 and Fig. 7, as preferable, lock groove 504 is along whole on the periphery of swivel nut 5 The annular groove of circumferentially extending, screw 1 set multiple and multiple screws 1 to be uniformly distributed circumferentially, the number of internal thread hole 302 Amount is identical with the quantity of screw 1, and each screw 1 is respectively embedded into an internal thread hole 302, and the axis of internal thread hole 302 is with entering The axis perpendicular of liquid set 3, all internal thread holes 302 are distributed in the surrounding of the first accommodating cavity 303, internal thread hole 302 and for The through hole of setting is extended radially through in the side wall of feed liquor set 3.Lock groove 504 is arranged at the first accommodating cavity of insertion 303 of swivel nut 5 End periphery on, all screws 1 are distributed in the surrounding of lock groove 504, the part insertion internal thread hole 302 of screw 1 In, in another part insertion lock groove 504 of screw 1, so as to which screw 1 can play position-limiting action to swivel nut 5 in the axial direction, So that feed liquor set 3 links into an integrated entity with swivel nut 5, while screw 1 can also circumferentially enter line slip in lock groove 504 so that Swivel nut 5 can cover relative to feed liquor and 3 be rotated, when the core assembly of the present invention is arranged in the valve pocket of valve body 2 or from valve When being dismantled in chamber, swivel nut 5 can be rotated and make feed liquor set 3 remain to keep connection status with swivel nut 5 in the rotary course of swivel nut 5, It will not be separated between feed liquor set 3 and swivel nut 5.And due to being provided with the O-shaped close of quality of rubber materials between feed liquor set 3 and valve body 2 Seal, sealing ring are clipped between feed liquor set 3 and the internal face of valve body 2, friction be present between sealing ring and feed liquor set 3 and valve body 2 Power, so when swivel nut 5 rotates relative to valve body 2, the presence of sealing ring causes between feed liquor set 3 and valve pocket 4 and valve body 2 not It can relatively rotate, and then also can avoids relatively rotating between feed liquor set 3 and valve pocket 4, avoids feed liquor set 3 and valve pocket 4 Separation.

As shown in Figure 1, Figure 2 with shown in Fig. 6, valve pocket 4 is provided with and allows the 4th liquid pass hole 402 that liquid passes through, the 4th liquid pass hole 402 There is angle to be obliquely installed on valve pocket 4, between the axis of the 4th liquid pass hole 402 and the axis of valve pocket 4 and the angle is sharp Angle.4th liquid pass hole 402 is, through the circular hole set, the 4th liquid pass hole 402 sets multiple and multiple in the side wall of valve pocket 4 For 4th liquid pass hole 402 to be uniformly distributed circumferentially in the side wall of valve pocket 4, multiple 4th liquid pass holes 402 are distributed in big valve core 9 Surrounding and the 4th liquid pass hole 402 can be connected with the hollow cavity of valve pocket 4, the 4th liquid pass hole 402 and with the 5th on valve body 2 Opening 206 is connected with the 6th opening 207.4th liquid pass hole 402 tilts extension, the 4th liquid pass hole in the interior of valve pocket 4 402 axis intersects with the axis of valve pocket 4 and angle between the two is less than 90 degree.4th liquid pass hole 402 is set using inclined hole Meter so that liquid is more smooth by being flowed during four liquid pass holes 402, and drag losses is smaller, and is easier to process.In same There is angle between the axis of the 3rd liquid pass hole 301 and the axis of the 4th liquid pass hole 402 on one axial direction and the angle is also to be sharp Angle, the 402 V-shaped arrangement of axis and the 4th liquid pass hole of the 3rd liquid pass hole 301 on same axial direction.

As shown in Figure 1, Figure 2 with shown in Fig. 6, valve pocket 4 is both ends open and the cylinder of inner hollow, and valve pocket 4 includes and feed liquor Set 3 connection connecting portions 407, for big valve core 9 is play the guiding role the first guide part 408, for being risen to differential valve element 7 Second guide part 409 of guide effect and the pressure-regulating portion 404 for accommodating pressure regulating device, connecting portion 407, the first guide part 408, Second guide part 409 and pressure-regulating portion 404 is set gradually and are fixedly connected sequentially along the axial direction of valve pocket 4, i.e., valve pocket 4 is by even Socket part 407, the first guide part 408, the second guide part 409 and pressure-regulating portion 404 are formed by connecting, connecting portion 407, the first guide part 408th, the second guide part 409 and pressure-regulating portion 404 are cirque structure, and connecting portion 407, the first guide part 408, second are oriented to To be coaxially disposed, the overall diameter of connecting portion 407 is more than the first guide part 408 and the second guide part 409 for portion 409 and pressure-regulating portion 404 Overall diameter, the interior diameter of connecting portion 407 is more than the interior diameter of the first guide part 408.In the insertion connecting portion 407 of feed liquor set 3 Be threadedly coupled in heart hole and with connecting portion 407, the internal face of connecting portion 407 is provided with internal thread, connecting portion 407 it is interior directly Footpath is the diameter of centre bore.Big valve core 9 is inserted in the centre bore of the first guide part 408, the overall diameter of big valve core 9 and first The diameter of the centre bore of guide part 408 is equal, and the interior diameter of the first guide part 408 is the diameter of centre bore.First leads It is less than the overall diameter of the second guide part 409, the interior diameter and the second guide part of the first guide part 408 to the overall diameter in portion 408 409 interior diameter size is identical.Differential valve element 7 is inserted in the centre bore of the second guide part 409, the overall diameter of differential valve element 7 with The diameter of the centre bore of second guide part 409 is equal.The diameter and the first guide part of the centre bore of second guide part 409 The diameter of 408 centre bore is identical, and the centre bore of the first guide part 408 connects with the centre bore of the second guide part 409, The centre bore of the centre bore of first guide part 408 and the second guide part 409 forms the guiding for accommodating big valve core 9 and differential valve element 7 Chamber 403, directed cavity 403 are circular cavity at valve pocket inside center, and the length of directed cavity 403 is more than big valve core 9 and poor The length of movable valve plug 7.

As shown in Figure 1, Figure 2, shown in Fig. 6 and Figure 10, valve pocket 4 have allow liquid by and flow liquid into inside valve pocket 4 to push away The first liquid pass hole 401 that moment movable valve plug 7 moves, big valve core 9 is driven to be directed away from valve seat 11 while differential valve element 7 moves Direction movement.First liquid pass hole 401 is that leading to for setting is extended radially through on the periphery of the first guide part 408 of valve pocket 4 Hole and the first liquid pass hole 401 are circular hole, the axis of the first liquid pass hole 401 and the axis perpendicular of valve pocket 4, the first liquid pass hole 401 Connected with directed cavity 403, the first liquid pass hole 401 is simultaneously connected with the 5th opening 206 on valve body 2 and the 6th opening 207.When At 5th opening 206 during pressure increase, namely at the 5th working hole A1 during pressure increase, the liquid outside valve pocket 4 is through the first mistake Fluid apertures 401 flows into the inside of valve pocket 4, namely liquid inside upright post jack through the 5th working hole A1 and the first liquid pass hole 401 Flow at differential valve element 7, liquid applies pressure to differential valve element 7, promotes differential valve element 7 to be directed away from the direction of valve seat 11 Move, drive big valve core 9 to be also directed away from the direction movement of valve seat 11 while differential valve element 7 moves, make big valve core 9 Being separated with valve seat 11, realize the automatic opening of hydraulic control one-way valve so that the 3rd liquid pass hole 301 connects with the 4th liquid pass hole 402, The relief passage of hydraulic control one-way valve is opened, and the liquid in the cavity of resorption of upright post jack crosses liquid through the 5th working hole A1, the 4th successively The liquid pass hole 301 of hole 402 and the 3rd is flowed in the 3rd working hole PA, realizes automatically unloading.

As shown in Figure 1, Figure 2, shown in Fig. 6 and Figure 10, differential valve element 7, which has, allows liquid to be connected by and with the first liquid pass hole 401 The second liquid pass hole 701, differential valve element 7 be one end open, the other end closing and inner hollow cylinder, differential valve element 7 Openend is towards small valve core 10, and differential valve element 7 and small valve core 10 and big valve core 9 is are coaxially disposed.The inside tool of differential valve element 7 There is admission chamber 705 and admission chamber 705 forms on the end face for facing small valve core 10 of differential valve element 7 and allows what small valve core 10 passed through Opening, admission chamber 705 are circular cavity, small valve core 10 can be inserted into the admission chamber 705 of differential valve element 7 and admission chamber 705 with it is small Valve element 10 is coaxial, and the length of admission chamber 705 is less than the length of differential valve element 7, and admission chamber 705 is connected with the second liquid pass hole 701 It is logical, the second liquid pass hole 701 be located at admission chamber 705 radially and the second liquid pass hole 701 connects with admission chamber 705, the second mistake liquid Hole 701 makes admission chamber 705 and the directed cavity 403 of valve pocket 4 be in connected state all the time, and the second liquid pass hole 701 also makes admission chamber 705 and first liquid pass hole 401 be in connected state, through the first liquid pass hole 401 enter valve pocket 4 directed cavity 403 in liquid lead to Cross the second liquid pass hole 701 to flow into the admission chamber 705 of differential valve element 7, the differential valve element 7 of liquid-driving enters during beneficial to automatically unloading Row movement.

As shown in Figure 1, Figure 2, shown in Fig. 6 and Figure 10, differential valve element 7 includes feed liquor portion 704 and the support sector 703 being connected, and enters Liquid portion 704 is used to provide big valve core 9 guide effect, and feed liquor portion 704 is inserted in the hollow cavity 902 of big valve core 9, feed liquor portion 704 be cirque structure, and admission chamber 705 is the inner chamber of feed liquor portion 704, and the second liquid pass hole 701 is in the cylindrical of feed liquor portion 704 Extend radially through the through hole of setting on face and the second liquid pass hole 701 is circular hole, axis and the feed liquor portion 704 of the second liquid pass hole 701 Axis perpendicular, the second liquid pass hole 701 divides to be evenly distributed multiple and all second liquid pass holes 701 in feed liquor portion 704 It is distributed in around admission chamber 705.Support sector 703 is cylinder, and support sector 703 is fixedly connected and propped up with one end of feed liquor portion 704 Portion 703 is held with feed liquor portion 704 to be coaxially disposed, support sector 703 closes the one end open of admission chamber 705, the He of feed liquor portion 704 To be set gradually along the axial direction of differential valve element 7, the second liquid pass hole 701 is located proximate to support sector 703 for support sector 703.Support sector 703 and feed liquor portion 704 insert in the directed cavity 403 of valve pocket 4, the diameter of support sector 703 is more than the overall diameter of feed liquor portion 704, The length of support sector 703 is less than the length of feed liquor portion 704, and the diameter of support sector 703 and the diameter of the directed cavity 403 of valve pocket 4 are big Small identical, the overall diameter of big valve core 9 is identical with the diameter of the directed cavity 403 of valve pocket 4, the interior diameter and feed liquor of big valve core 9 The overall diameter size in portion 704 is identical.

As shown in Figure 1, Figure 2, shown in Fig. 8 and Fig. 9, big valve core 9 is the cylinder of both ends open and inner hollow, big valve core 9 One end is for the sealed end that contact with valve seat 11, and the periphery of sealed end is circular conical surface and the circular conical surface as on big valve core 9 The sealing surface for realizing sealing is contacted with valve seat 11.The inside of big valve core 9 for accommodate small valve core 10 hollow cavity 902, small valve core 10 be cylinder, small valve core 10 have the lateral surface of sealing and the sealing be provided be used to contact with big valve core 9 realize it is close The sealing surface of envelope, the sealing surface of small valve core 10 are circular conical surface, sealing be arranged at it is in the side wall of small valve core 10 and outstanding A complete loop configuration, sealing and big valve core 9 are coaxial and sealing position in the hollow cavity 902 of big valve core 9. Small valve core 10 and big valve core 9 are engaged realization sealing and small valve core 10 and big valve core 9 are tightly connected to be hard, in closed check valve Good sealing effect afterwards, reliability are high.It is provided with the first spring 12 between differential valve element 7 and small valve core 10, the first spring 12 is used for pair Differential valve element 7 applies the active force for making it be moved axially towards the direction away from differential valve element 7, and the first spring 12 is simultaneously Big valve core 9 is promoted to realize sealing until big valve core 9 contacts with valve seat 11 towards movement at valve seat 11 by small valve core 10, first Spring 12 is located in the admission chamber 705 of differential valve element 7 and the first spring 12 is clipped in the internal face and small valve core 10 of differential valve element 7 Sealing between, one end of the first spring 12 is against on the internal face of differential valve element 7, and the other end is against the close of small valve core 10 On the end face in envelope portion, the first spring 12 is cylindrically coiled spring.In the presence of the first spring 12, small valve core 10 and different valve Core 7 is done mutually away from motion.

As shown in Figure 1, Figure 2, shown in Fig. 8 and Figure 10, big valve core 9 is sheathed on differential valve element 7, big valve core 9 and differential valve element 7 Between be provided with link gear, differential valve element 7 and small valve core 10 are provided with spring, and link gear is arranged to make different valve in release Core 7 can drive big valve core 9 to be directed away from the direction movement of valve seat 11, big valve core 9 is separated with valve seat 11, realize check valve Automatically unloading.After the sealing surface of small valve core 10 separates with big valve core 9, the admission chamber 705 of differential valve element 7 passes through small valve core Gap between 10 and big valve core 9 connects with the 3rd liquid pass hole 301 on feed liquor set 3.Sealing surface and big valve in small valve core 10 After core 9 contacts, the sealing on small valve core 10 is by between the admission chamber 705 and small valve core 10 and big valve core 9 of differential valve element 7 Gap separates, and then the admission chamber 705 of differential valve element 7 is not connected with the 3rd liquid pass hole 301 on feed liquor set 3.In column When jack carries out setting prop action, push rod promotes big valve core 9 and small valve core 10 to be directed away from the direction movement of valve seat 11, makes big Valve element 9 separates with valve seat 11, opens locked cavity, realizes the unlatching of hydraulic control one-way valve, and liquid flows into hydraulic control through the 3rd opening 204 In check valve, the liquid flowed into hydraulic control one-way valve is opened through the 3rd liquid pass hole 301 and the 4th liquid pass hole 402 inflow the 5th successively In mouth 206, liquid is eventually entered into the cavity of resorption of upright post jack, realizes the setting prop action of upright post jack.Opposite, vertical When post jack carries out drop post, the liquid in the cavity of resorption of upright post jack is flowed into hydraulic control one-way valve through the 5th opening 206, most Liquid is through the outflow hydraulic control one-way valve of the 3rd opening 204 afterwards.

As shown in Figure 1, Figure 2, shown in Fig. 8 and Figure 10, big valve core 9 has the mounting hole 901 for allowing link gear to be embedded in, different valve Core 7 has the chute 702 for allowing link gear to be embedded in, and link gear includes the sliding part in embedded mounting hole 901 and chute 702 16 and it is arranged in mounting hole 901 and the locating part 17 of position-limiting action is played to sliding part 16.Mounting hole 901 is in big valve core 9 The through hole of setting is extended radially through in side wall and mounting hole 901 is circumferentially uniformly arranged multiple, cunning in the side wall of big valve core 9 Groove 702 is along the annular groove entirely circumferentially extended on the periphery of differential valve element 7.Sliding part 16 is preferably spherical, spacing Part 17 is preferably to insert in mounting hole 901 and is the screw being threadedly coupled with big valve core 9, and mounting hole 901 is internal thread hole.Limit Position part 17 is screwed into mounting hole 901, and sliding part 16 is compressed so that in the embedded mounting hole 901 of a part of sliding part 16, separately In the embedded chute 702 of a part, so as to realize the connection between big valve core 9 and differential valve element 7, and big valve can be made It can be relatively rotated between core 9 and differential valve element 7, big valve core 9 will not separate with differential valve element 7, and link gear causes greatly Valve element 9, differential valve element 7, the spring 12 of small valve core 10 and first is formed inside valve pocket 4 can synchronization-moving integrative-structure.Chute 702 have certain length, and sliding part 16 is the spherical partses to match with chute 702, and the length of chute 702 is more than sliding part 16 diameter so that big valve core 9 can be movable along the axial direction relative to differential valve element 7.Chute 702 is to be arranged at feed liquor portion Groove on 704 periphery, in the axial direction of differential valve element 7, the second liquid pass hole 701 is located at support sector 703 and chute 702 Between.

As preferable, as shown in Figure 1, Figure 2, shown in Fig. 8 and Figure 10, sliding part 16 sets multiple and multiple sliding parts 16 to be It is uniformly distributed circumferentially, the quantity of mounting hole 901 and locating part 17 is identical with the quantity of sliding part 16, and each locating part 17 divides Qian Ru not be in a mounting hole 901, each sliding part 16 is respectively embedded into a mounting hole 901, the axis of mounting hole 901 with The axis perpendicular of big valve core 9, mounting hole 901 and be that the through hole of setting is extended radially through in the side wall of big valve core 9.

As shown in Figure 1, Figure 2, shown in Fig. 6, Fig. 8 and Figure 10, after big valve core 9 contacts with valve seat 11, the sealing surface of big valve core 9 with It is linear contact lay between valve seat 11, forms sealing ring.Valve pocket 4 play the guiding role to differential valve element 7 and big valve core 9, differential valve element 7 Sealing surface with the periphery and the periphery of differential valve element 7 contacted with valve pocket 4 and big valve core 9 is to be coaxially disposed, differential The diameter of the periphery of valve element 7 is more than straight with the sealing ring at the contact site of valve seat 11 on the sealing surface of big valve core 9 Footpath, namely support sector 703 diameter be more than big valve core 9 sealing surface on the diameter at the contact site of valve seat 11, support sector Be provided with O-ring seal between 703 and valve pocket 4, realize sealing, the sealing ring be clipped in support sector 703 and valve pocket 4 inner headed face it Between.So by the different-diameter and pressure dependence of sealing position, the action under pressure differential could be completed, realizes check valve Automatic opening and automatic unloading.

As shown in Figure 1, Figure 2, shown in Fig. 6 and Figure 11, the first liquid pass hole 401 is in the cylindrical of the first guide part 408 of valve pocket 4 It is circular hole, the axis of the first liquid pass hole 401 and the axle of valve pocket 4 that the through hole of setting and the first liquid pass hole 401 are extended radially through on face Line is perpendicular, and the first liquid pass hole 401 divides to be evenly distributed multiple and all first liquid pass holes 401 on the first guide part 408 It is distributed in around the directed cavity 403 of valve pocket 4, the first liquid pass hole 401 connects with directed cavity 403, the diameter of the second liquid pass hole 701 It is identical with the diameter of the first liquid pass hole 401.In the axial direction of valve pocket 4, the first liquid pass hole 401 is located at the 4th liquid pass hole 402 And second between guide part 409.

As shown in Figure 1, Figure 2 with shown in Fig. 6, as preferable, valve pocket 4 also includes being arranged at being sheathed on the second guide part 409 And the flange 410 being fixedly connected with the second guide part 409, flange 410 are cirque structure, flange 410 is radially toward second The outside protrusion of guide part 409, the overall diameter of flange 410 are more than the overall diameter of the first guide part 408 and the second guide part 409 And less than the overall diameter of connecting portion 407, the overall diameter of flange 410 is less than the diameter of the valve pocket of valve body 2, the periphery of flange 410 There is gap between the inner headed face of the valve pocket of valve body 2.Flange 410 is engaged with confined planes set in valve body 2 so that valve Body 2 can play position-limiting action in the axial direction to valve pocket 4.

As shown in Figure 1, Figure 2, shown in Fig. 6 and Figure 12, pressure-regulating portion 404 is the cylinder of both ends open and inner hollow, pressure-regulating portion 404 overall diameter is identical with the overall diameter size of the second guide part 409, and the length of pressure-regulating portion 404 is more than the second guide part 409 Length, one end of pressure-regulating portion 404 is fixedly connected with the second guide part 409 and the end of pressure-regulating portion 404 is located at the valve pocket of valve body In, the other end of pressure-regulating portion 404 is located at the outside of valve body, and the inside of pressure-regulating portion 404 has the pressure regulating cavity for accommodating pressure regulating device 406, pressure regulating cavity 406 is the circular cavity at the inside center of pressure-regulating portion 404.Pressure regulating device includes movably being arranged at The inside of pressure-regulating portion 404 and contacted with differential valve element 7 spring base 8, be arranged at pressure-regulating portion 404 inside and with pressure-regulating portion 404 Voltage regulation screw 15 for threaded connection and the pressure spring 14 being arranged between voltage regulation screw 15 and spring base 8, valve pocket 4 have There are the avoid holes 405 for allowing spring base 8 to pass through.Avoid holes 405 are to be arranged at the circular hole at the inside center of the second guide part 409, Avoid holes 405 are coaxially disposed with directed cavity 403 and the diameter of avoid holes 405 is less than the diameter of directed cavity 403.In the axle of valve pocket 4 Upwards, for avoid holes 405 between directed cavity 403 and pressure regulating cavity 406, avoid holes 405 can be with directed cavity 403 and pressure regulating cavity 406 Connection.Second guide part 409 is used to play spring base 8 axial limiting effect, voltage regulation screw 15, spring base 8 and pressure spring 14 are arranged in the pressure regulating cavity 406 of pressure-regulating portion 404.Voltage regulation screw 15 closes the one end open of pressure-regulating portion 404, and second is oriented to Portion 409 is fixedly connected with the other end of pressure-regulating portion 404 and the second guide part 409 closes the end opening of pressure-regulating portion 404.Bullet Spring abutment 8 through the second guide part 409 avoid holes 405 and insert in air storing cavity 18, air storing cavity 18 be positioned at the inside of valve pocket 4 and The chamber between the inner bottom surface relative with the end face of differential valve element 7 in the end face of differential valve element 7 and the second guide part 409 The inner bottom surface of body, the end face of differential valve element 7 and the second guide part 409 is the axis with the differential guide part 409 of valve element 7 and second Perpendicular plane, i.e. air storing cavity 18 are a part for the directed cavity 403 of valve pocket 4, and air storing cavity 18 is positioned at the differential He of valve element 7 Cavity between second guide part 409, liquid is introduced into air storing cavity 18, in the axial direction of valve pocket 4, avoid holes 405 are positioned at storage Between air cavity 18 and pressure regulating cavity 406, avoid holes 405 can connect with air storing cavity 18 and pressure regulating cavity 406.Spring base 8 is clipped in pressure regulation bullet Between spring 14 and differential valve element 7, the active force that pressure spring 14 applies to spring base 8 makes spring base 8 and differential valve element 7 all the time Contact condition is kept, and then applies elastic acting force vertically to differential valve element 7.Pressure spring 14 is simultaneously differential for promoting Valve element 7 moves towards the direction close to valve seat 11, realizes the reset of differential valve element 7, and then realize the pass of hydraulic control one-way valve Close.During differential valve element 7 moves back and forth, avoid holes 405 make air storing cavity 18 and pressure regulating cavity 406 is in connected state, storage Gas in air cavity 18 and pressure regulating cavity 406 can flow back and forth.When differential valve element 7 is directed away from the direction movement of valve seat 11, Air in air storing cavity 18 is pushed into pressure regulating cavity 406 by differential valve element 7 through avoid holes 405, and pressure regulating cavity 406 is also introduced into liquid.

As shown in Figure 1, Figure 2, shown in Fig. 6 and Figure 12, voltage regulation screw 15 is cylinder, and voltage regulation screw 15 and pressure-regulating portion 404 are spiral shell Line connects, and the periphery of voltage regulation screw 15 is provided with external screw thread, and the inner headed face of pressure-regulating portion 404 is provided with internal thread, voltage regulation screw 15 position-adjustable inside pressure-regulating portion 404, therefore voltage regulation screw 15 is set to be threadedly coupled with pressure-regulating portion 404, this Sample is easy to adjust axial location of the voltage regulation screw 15 in pressure-regulating portion 404.Pressure spring 14 is clipped in spring base 8 and voltage regulation screw Between 15, when voltage regulation screw 15 is in diverse location, the pretightning force of pressure spring 14 is of different sizes, therefore can realize hydraulic control The regulation of non-return valve operational pressure size, hydraulic control one-way valve is can adapt to the job requirement of different pressures, improve hydraulic control list To the versatility of valve.

As shown in Figure 1, Figure 2, shown in Fig. 6 and Figure 11, spring base 8 is by limiting section 801, first boss 802 and second boss 803 are formed, and limiting section 801, first boss 802 and second boss 803 are cylinder, first boss 802 and second boss 803 are fixedly connected in the side of limiting section 801 with limiting section 801 respectively, form the spring base 8 of integrative-structure.First boss 802 and second boss 803 be coaxially disposed with limiting section 801, the diameter of limiting section 801 is more than first boss 802 and second boss 803 diameter, the diameter of limiting section 801 are more than the diameter of avoid holes 405, and the diameter of first boss 802 is less than avoid holes 405 Diameter.Pressure spring 14 is cylindrically coiled spring, and second boss 803 is for insertion into pressure spring 14 to pressure spring 14 one end is positioned.Contacted in one end insertion air storing cavity 18 of first boss 802 with differential valve element 7, first boss 802 The other end be fixedly connected with the limiting section 801 inside the pressure-regulating portion 404, limiting section 801 is located at the pressure regulation of pressure-regulating portion 404 In chamber 406, the diameter of limiting section 801 is more than the diameter of avoid holes 405.After hydraulic control one-way valve closing, the second guide part 409 Contacted with limiting section 801, the second guide part 409 plays position-limiting action to spring base 8.

As shown in Figure 1, Figure 2 with shown in Figure 12, in use, hydraulic control one-way valve and upright post jack and three position four-way directional control valve connect Connect, the 3rd working hole PA (i.e. working hole PA in Figure 12) of hydraulic control one-way valve and the 7th working hole PB (i.e. work in Figure 12 Mouth PB) it is connected with three position four-way directional control valve, the first working hole B (i.e. working hole B in Figure 12) of hydraulic control one-way valve and the 5th work Make mouth A1 (i.e. working hole A in Figure 12) to be connected with upright post jack, the first working hole simultaneously connects with the rod chamber of upright post jack Connect, the 5th working hole is simultaneously connected with the rodless cavity of upright post jack, the 4th working hole PA of hydraulic control one-way valve, (i.e. in Figure 12 Working hole PA) and the 8th working hole PB, (i.e. working hole PB in Figure 12) and the hydraulic control one-way valve for connecing other adjacent frame, hydraulic control The 6th working hole A2 (i.e. working hole A2 in Figure 12) of check valve is used to be connected with the pressure gauge of outside or pressure sensor To meet other desired needs.

Upright post jack carry out setting prop action process be:When working condition requirement upright post jack rises, pass through three four The control of logical reversal valve, opens the 3rd working hole of hydraulic control one-way valve, fluid enters hydraulic control one-way valve, and hydraulic control one-way valve is opened Open, high-voltage oil liquid enters the cavity of resorption (i.e. rodless cavity) of upright post jack through hydraulic control one-way valve, with the entrance of high-voltage oil liquid, makes Upright post jack is obtained to overcome top roof pressure and rise, after upright post jack rises to predetermined altitude, 3-position 4-way commutation Valve stops the 3rd working hole feed flow to hydraulic control one-way valve, and core assembly resets to form locking shape due to the spring effect of inside State, now upright post jack holding holding state.

Upright post jack carries out dropping the process that post acts:When working condition requirement upright post jack declines, pass through three four The control of logical reversal valve, opens the 7th working hole of hydraulic control one-way valve, fluid enters hydraulic control one-way valve, into fluid-control one-way Fluid in valve promotes the push rod movement of core assembly, and then big valve core 9 is separated with valve seat 11, opens locked cavity, while oil Liquid enters the epicoele (i.e. rod chamber) of upright post jack by the first working hole, the high-voltage oil liquid in the cavity of resorption of upright post jack Reversely flow into hydraulic control one-way valve, and three position four-way directional control valve is flowed into by the 3rd working hole, eventually enter into major loop, now Upright post jack declines, and when upright post jack drops to desired height, three position four-way directional control valve stops to hydraulic control one-way valve 7th working hole feed flow, core assembly is because the spring effect of inside resets to form locking states, and now upright post jack recovers Holding state.

When the pressure of the lower intracavitary of upright post jack exceedes the operating pressure of hydraulic control one-way valve, hydraulic control one-way valve can be automatic Open release so that the pressure fluid outflow of the lower intracavitary of upright post jack, realize pressure reduction, complete upright post jack Unloading, it is ensured that the security of hydraulic system, and make hydraulic control one-way valve without external overflow valve (i.e. safety valve), without relying upon outer The overflow valve connect realizes release, and liquid will not be discharged into outside hydraulic system, will not thus cause the waste and pollution of liquid Underground environment.

The present invention is exemplarily described above in association with accompanying drawing.Obviously, present invention specific implementation is not by above-mentioned side The limitation of formula.As long as employ the improvement of the various unsubstantialities of inventive concept and technical scheme of the present invention progress;Or not It is improved, the above-mentioned design of the present invention and technical scheme are directly applied into other occasions, in protection scope of the present invention Within.

Claims (10)

1. the core assembly of hydraulic control one-way valve, including swivel nut, feed liquor set, valve seat, valve pocket, the big valve core being arranged inside valve pocket and The small valve core being arranged inside big valve core, it is characterised in that:Also include movably being arranged inside the valve pocket and for controlling Make differential valve element that the big valve core moves and be arranged inside valve pocket and for applying elastic acting force to differential valve element Pressure regulating device.
2. the core assembly of hydraulic control one-way valve according to claim 1, it is characterised in that:The valve pocket, which has, allows liquid to lead to Cross and flow liquid into inside valve pocket to promote the first liquid pass hole of the differential valve element movement, band while differential valve element moves Move the direction movement that the big valve core is directed away from valve seat.
3. the core assembly of hydraulic control one-way valve according to claim 2, it is characterised in that:The differential valve element, which has, allows liquid The second liquid pass hole that body connects by and with first liquid pass hole.
4. the core assembly of hydraulic control one-way valve according to any one of claims 1 to 3, it is characterised in that:The big valve core set On the differential valve element, link gear is provided between big valve core and differential valve element, differential valve element and small valve core are provided with spring, Link gear is arranged to the direction movement for enabling differential valve element drive big valve core to be directed away from the valve seat in release.
5. the core assembly of hydraulic control one-way valve according to claim 4, it is characterised in that:The big valve core is described with allowing The mounting hole of link gear insertion, the differential valve element have the chute for allowing link gear to be embedded in, and link gear includes embedded pacify Fill the sliding part in hole and chute and be arranged in mounting hole and the locating part of position-limiting action is played to sliding part, sliding part is ball Shape, for locating part with big valve core to be threadedly coupled, mounting hole is internal thread hole.
6. the core assembly of hydraulic control one-way valve according to any one of claims 1 to 5, it is characterised in that:The swivel nut passes through Screw connects with feed liquor set, and feed liquor set has the locking for allowing screw to insert with the internal thread hole for allowing screw to insert, swivel nut Groove, for feed liquor set with the valve pocket to be threadedly coupled, swivel nut is to be threadedly coupled with the valve body of hydraulic control one-way valve.
7. the core assembly of hydraulic control one-way valve according to claim 6, it is characterised in that:The lock groove is in the spiral shell Along the annular groove entirely circumferentially extended on the periphery of set, the screw sets multiple and multiple screws circumferentially uniformly to divide Cloth.
8. according to the core assembly of any described hydraulic control one-way valve of claim 5 to 7, it is characterised in that:The differential valve element Including the feed liquor portion being connected and support sector, the big valve core is sheathed in feed liquor portion and feed liquor portion is used to lead big valve core offer To effect, the chute be on the periphery for be arranged at feed liquor portion along the annular groove entirely circumferentially extended, the support sector Diameter is more than on the sealing surface of the big valve core and is more than the feed liquor with the diameter at valve seat contact site, the diameter of support sector The diameter in portion.
9. the core assembly of hydraulic control one-way valve according to any one of claims 1 to 8, it is characterised in that:The pressure regulating device Including being movably arranged at the spring base contacted inside the valve pocket and with differential valve element, being arranged at valve pocket inside and and valve pocket Voltage regulation screw for threaded connection and the pressure spring structure being arranged between voltage regulation screw and spring base, valve pocket, which has, allows spring The avoid holes that seat passes through.
10. the core assembly of hydraulic control one-way valve according to claim 9, it is characterised in that:The spring base is by spacing Portion, first boss and second boss are formed, and first boss and second boss are fixed in the side of limiting section and limiting section connect respectively Connecing and the overall diameter of limiting section is more than the overall diameter of first boss and second boss, second boss is inserted in the pressure spring, First boss is used to contact with the differential valve element.
CN201711018458.XA 2017-10-27 2017-10-27 The core assembly of hydraulic control one-way valve CN107859524A (en)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0523328A2 (en) * 1991-07-17 1993-01-20 Richard Voss Grubenausbau Gmbh Adjustable spraying valve
CN202560256U (en) * 2012-04-10 2012-11-28 巨隆集团芜湖兴隆液压有限公司 Plug-in type stand column hydraulic control one-way valve
CN203130118U (en) * 2013-03-05 2013-08-14 巨隆集团芜湖兴隆液压有限公司 Differential pressure combination valve
CN203441509U (en) * 2013-09-04 2014-02-19 巨隆集团芜湖兴隆液压有限公司 Novel large-flow hydraulic control one-way valve
CN204200248U (en) * 2014-11-05 2015-03-11 乐清市东风煤矿设备有限公司 A kind of coal mine hydraulic supporting column pilot operated check valve
CN105909583A (en) * 2016-03-02 2016-08-31 杭州力龙液压有限公司 Buffer overflow valve and hydraulic system
CN205990922U (en) * 2016-05-13 2017-03-01 鑫矿液压科技有限公司 Column pilot operated check valve

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0523328A2 (en) * 1991-07-17 1993-01-20 Richard Voss Grubenausbau Gmbh Adjustable spraying valve
CN202560256U (en) * 2012-04-10 2012-11-28 巨隆集团芜湖兴隆液压有限公司 Plug-in type stand column hydraulic control one-way valve
CN203130118U (en) * 2013-03-05 2013-08-14 巨隆集团芜湖兴隆液压有限公司 Differential pressure combination valve
CN203441509U (en) * 2013-09-04 2014-02-19 巨隆集团芜湖兴隆液压有限公司 Novel large-flow hydraulic control one-way valve
CN204200248U (en) * 2014-11-05 2015-03-11 乐清市东风煤矿设备有限公司 A kind of coal mine hydraulic supporting column pilot operated check valve
CN105909583A (en) * 2016-03-02 2016-08-31 杭州力龙液压有限公司 Buffer overflow valve and hydraulic system
CN205990922U (en) * 2016-05-13 2017-03-01 鑫矿液压科技有限公司 Column pilot operated check valve

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Application publication date: 20180330