CN107842380A - The core assembly of automatic unloading hydraulic control one-way valve - Google Patents
The core assembly of automatic unloading hydraulic control one-way valve Download PDFInfo
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- CN107842380A CN107842380A CN201711016807.4A CN201711016807A CN107842380A CN 107842380 A CN107842380 A CN 107842380A CN 201711016807 A CN201711016807 A CN 201711016807A CN 107842380 A CN107842380 A CN 107842380A
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- core
- hole
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- hydraulic control
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- 239000007788 liquid Substances 0.000 claims description 190
- 238000007789 sealing Methods 0.000 claims description 45
- 230000033001 locomotion Effects 0.000 claims description 14
- 230000009471 action Effects 0.000 claims description 13
- 238000003860 storage Methods 0.000 claims description 13
- 238000005520 cutting process Methods 0.000 claims description 9
- 230000033228 biological regulation Effects 0.000 description 17
- 238000003780 insertion Methods 0.000 description 16
- 230000037431 insertion Effects 0.000 description 16
- 230000000670 limiting effect Effects 0.000 description 12
- 230000000694 effects Effects 0.000 description 10
- 239000012530 fluid Substances 0.000 description 10
- 239000011148 porous material Substances 0.000 description 9
- 238000013016 damping Methods 0.000 description 8
- 230000007246 mechanism Effects 0.000 description 7
- 230000001105 regulatory effect Effects 0.000 description 6
- 230000001154 acute effect Effects 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000007769 metal material Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 210000004907 gland Anatomy 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000010808 liquid waste Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 229920006324 polyoxymethylene Polymers 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000011122 softwood Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/50—Component parts or details of props
- E21D15/51—Component parts or details of props specially adapted to hydraulic, pneumatic, or hydraulic-pneumatic props, e.g. arrangements of relief valves
- E21D15/512—Arrangement of valves
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/16—Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Lift Valve (AREA)
Abstract
The invention discloses a kind of core assembly of automatic unloading 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 and movably it is arranged inside the valve pocket and the differential valve element for controlling the big valve core to move.The core assembly of automatic unloading hydraulic control one-way valve of the invention, is moved, it is possible to achieve the automatically unloading of check valve by setting different valve core ribbon to move big valve core.
Description
Technical field
The present invention relates to the Hydraulic Elements in coal mine hydraulic supporting hydraulic circuit, specifically, the present invention relates to it is a kind of from
The core assembly of dynamic unloading hydraulic control one-way 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, make again
Into 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, it is general
Property is poor.
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 one kind certainly
The core assembly of dynamic unloading hydraulic control one-way 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 automatic unloading 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 and
Movably it is arranged inside the valve pocket and is used for the differential valve element for controlling the big valve core to move.
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 valve pocket
It is arranged with liquid is allowed on valve pocket by and with the second liquid pass hole connects and the 3rd liquid pass hole of liquid outflow that allows inside valve pocket
Have for controlling the opening and closing of the 3rd liquid pass hole and distending and the chokes set shunk can be carried out.
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 institute in release
State the direction movement of 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 play limit to sliding part
The locating part of position effect.
The sliding part is spherical, and for the locating part with the big valve core to be threadedly coupled, the 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, swivel nut is to be threadedly coupled with valve body.
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 valve pocket has the storage tank for accommodating the chokes set, and storage tank is along whole circumference on the periphery of valve pocket
The annular groove of extension, chokes set is cirque structure.
The chokes are put disconnects chokes set provided with a cutting sealing, cutting sealing in the circumferential.
The core assembly of automatic unloading hydraulic control one-way valve of the invention, by setting different valve core ribbon to move big valve inside valve pocket
Core moves, it is possible to achieve the automatically unloading of check valve.
Brief description of the drawings
This specification includes the following drawings, and shown content is respectively：
Fig. 1 is the sectional view of automatic unloading 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 chokes set；
Figure 12 is the sectional view of spring base；
Figure 13 is the sectional view of pressure-regulating sleeve；
Figure 14 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 6th 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 3rd liquid pass hole；402nd, the 4th liquid pass hole；403rd, big footpath chamber；404th, path chamber；405th, it is oriented to
Hole；406th, storage tank；407th, connecting portion；408th, the first guide part；409th, the second guide part；410th, flange；411st, first liquid is crossed
Hole；
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；804th, intercommunicating pore；805th, air admission hole；
806th, valve pocket；
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, nonreturn valve core；15th, back-moving spring；16、
Screw plug；17th, pressure-regulating sleeve；18th, pressure spring；19th, voltage regulation screw；20th, chokes set；21st, sliding part；22nd, locating part；23rd, cutting
Sealing；24th, 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 those skilled in the art to have more complete, accurate and deep reason to design of the invention, technical scheme
Solution, and contribute to its implementation.
As shown in Fig. 1 to Figure 14, for a kind of automatic unloading hydraulic control one-way valve, including valve body 2, pressure regulating device and the present invention
Core assembly, core assembly include push rod, swivel nut 5, feed liquor set 3, valve seat 11, valve pocket 4, the first spring 12, second spring 13, set
The big valve core 9 that is placed in inside valve pocket 4, the small valve core 10 being arranged inside big valve core 9 and it is moveable be arranged at the inside of valve pocket 4 and
For the differential valve element 7 for controlling big valve core 9 to move, pressure regulating device is used to apply 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 and second spring 13 etc. form the core assembly of plug-in, the core assembly of the invention of formation
It is structure as a whole.Feed liquor set 3 positioned at swivel nut 5 and valve pocket 4 between, valve seat 11 be arranged at the inside of feed liquor set 3 and valve seat 11 with greatly
Valve element 9 is engaged realization sealing, and big valve core 9 has the sealing surface for being used for being in contact with valve seat 11 and the sealing surface 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 the inside for being movably arranged at valve pocket 4, small valve
Core 10 is 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 pressure vertically
Power, push rod can promote the inside of big valve core 9 towards valve pocket 4 mobile and promote small valve core 10 to be leaned in the inside of big valve core 9 direction
The direction of nearly differential valve element 7 moves, and big valve core 9 is separated with valve seat 11, realizes the unlatching of check valve.Swivel nut 5 and valve body 2
For threaded connection, feed liquor set 3 is clipped between swivel nut 5 and valve pocket 4 and feed liquor set 3 is fixedly connected with swivel nut 5 and valve pocket 4, and valve pocket 4 is used
The position-limiting action in the axial direction to big valve core 9 and differential valve element 7, swivel nut 5 are used to play position-limiting action, spiral shell to push rod in the axial direction
Set 5 and valve body 2 simultaneously are used to be connected with the upright post jack of outside.Upright post jack is a kind of single-piston-rod hydraulic cylinder, column thousand
Jin top can extend and shrink.When upright post jack is extended, to carry out setting prop action.When upright post jack is shunk,
Drop post action.
As shown in Figure 1 to Figure 3, the inside of valve body 2 has the valve pocket for the core assembly for accommodating the present invention, and valve pocket is in valve body
2 one end end face extends the circular cavity to be formed initially towards the inside of valve body 2, and core assembly of the invention integrally inserts valve body
In 2 valve pocket 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 in valve body 2 one
An opening is formed on the end face of end and sets the opening as the first opening 202, core assembly inserts valve pocket at the first opening 202
In, to be threadedly coupled in core assembly insertion valve pocket and with valve body 2, core assembly is arranged to be threadedly coupled with valve body 2, conveniently tears open
Dress and maintenance.Valve body 2 is provided with the second opening 203, and the second opening 203 is located in the axial direction of valve pocket and the second opening 203 and valve
Chamber connects, and the first opening 202 and the second opening 203 are to be oppositely arranged.Pressure regulating device insertion second opening 203 in and with valve body 2
It is fixedly connected, pressure regulating device 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 is provided with one first 204, one the 4th openings 205, one of opening of opening 203, one the 3rd of opening 202, one second
The individual opening 208 of opening 207, one the 7th of 5th opening 206, one the 6th and one the 8th opening 209, the second opening 203 are made
For the second working hole A, for the 3rd opening 204 as the 3rd working hole PA for allowing liquid to pass through, the 4th opening 205, which is used as, allows liquid to lead to
The 4th working hole PA crossed, the 5th opening 206 is used as the 5th working hole A1 for allowing liquid to pass through, and the conducts of the 6th opening 207 allow liquid
The 6th working hole A2 that body passes through, the 7th opening 208 is as the 7th working hole PB for allowing liquid to pass through, the 8th 209 conducts of opening
Allow the 8th working hole PB that liquid passes through, swivel nut 5 allows the first working hole B that liquid passes through provided with one, and swivel nut 5 is
It is connected at one working hole B by oil pipe with the upright post jack of outside.Valve body 2 passes through oil pipe and outside at the 5th opening 206
Upright post jack connection, into the liquid in valve pocket by the 5th opening 206 flow into upright post jacks in, in upright post jack
Liquid pass through the 5th opening 206 flow into valve pockets in.
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 valve phases
Connection is in use, the 4th opening 205 of one of hydraulic control one-way valve connects with the 3rd opening 204 of another hydraulic control one-way valve
Connect, the 8th opening 209 of one of hydraulic control one-way valve is connected with the 7th opening 208 of another hydraulic control one-way valve.6th opens
207 (i.e. the 6th working hole A2) of mouth can be used for being connected what is required to meet other with the pressure gauge of outside or pressure sensor
Need, the 6th opening 207 can also use chock to be blocked when need not using, and the 6th opening 207 can be closed, and seal
Closing rear fluid can not pass through.
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 opening 206 of the 3rd opening the 204, the 5th and the 7th opening 208 and and valve
Chamber 201 is connected, and the opening 206 of the 3rd opening the 204, the 5th and the 7th opening 208 are in parallel with the length direction of valve body 2
On same straight line and the 3rd opening 204 and positioned at the 5th opening 206 and the 7th opening 208 between.4th opening the 205, the 6th is opened
The opening 209 of mouth 207 and the 8th is the circular holes extended from the 4th end face of valve body 2 initially towards the inside of valve body 2, and the 4th is open
205th, the axis of the 6th opening 207 and the 8th opening 209 is parallel and the axis perpendicular of valve pocket 201 with valve body 2, and the 4th opens
The opening 209 of the opening of mouth the 205, the 6th 207 and the 8th is connected with valve pocket 201, and the opening 207 and the 8th of the 4th opening the 205, the 6th is opened
Mouthfuls 209 on the same straight line parallel with the width of valve body 2 and the 4th opening 205 is positioned at the 8th opening 209 and the
Between six openings 207, the 3rd opening 204 and the 4th opening 205 are in the same straight line parallel with the width of valve body 2
On, the 5th opening 206 and the 6th opening 207 are on the same straight line parallel with the width of valve body 2, the 7th opening
208 and the 8th are open 209 on the same straight line parallel with the width of valve body 2.Second opening 203 is from valve body 2
The circular hole that extends initially towards the inside of valve body 2 of second end face, the first opening 202 is arranged in the first end face of valve body 2, the
One 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, the second opening 203 is located at valve element group
In the axial direction of part, closed in the opening 203 of pressure regulating device insertion second and by the second opening 203.3rd opening 204 and the 4th opening
205 positioned at feed liquor set 3 radially and the 3rd opening 204 and the 4th opening 205 positioned at the side of feed liquor set 3 and the 3rd are opened respectively
Mouthfuls 204 and the 4th opening 205 connect with the inner chamber of feed liquor set 3, the 5th opening 206 and the 6th be open 207 positioned at valve pocket 4 radial direction
Upper and the 5th opening 206 and the 6th opening 207 are located at the side of valve pocket 4 respectively, and the 7th opening 208 and the 8th opening 209 are located at
Swivel nut 5 radially and the 7th opening 208 and the 8th opening 209 respectively positioned at swivel nut 5 side and the 7th opening 208 and the 8th
Opening 209 connects with the inner chamber 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 is cirque structure and valve seat 11 and feed liquor set 3 and valve pocket 4 are to be coaxially disposed, the inside of valve seat 11
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 center.Big valve core 9
It is made with valve seat 11 of metal material, 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 core 9
Hardness, big valve core 9 and valve seat 11 be tightly connected to be hard, enhances sealing property.Big valve core 9 and valve seat 11 use metal material
It is made, and uses vacuum hardening technology, refined again after quenching, hardness is high, and relative to the sealing of softwood matter, hard sealing is 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 structure, big valve
The sealing surface of core 9 is circular conical surface, and the sealed end of big valve core 9 can stretch into the centre bore of valve seat 11 and the realization that is in contact with valve seat 11
Sealing, push rod only start to contact with big valve core 9 at valve seat 11, and the structure of big valve core 9 is simpler, the overall knot of hydraulic control one-way valve
Structure is more compact.In addition, small valve core 10 is also made of metal material, valve seat 11, big valve core 9 are identical with the material of small valve core 10.
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, the diameter of piston 602
More than the diameter of push rod body 601, push rod body 601 is used to contact with big valve core 9 and small valve core 10, with when check valve is opened
Big valve core 9 and small valve core 10 is promoted to be moved linearly towards the direction close to differential valve element 7.Piston 602 is located at the interior of swivel nut 5
Portion, 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 inserts feed liquor
The inside of set 3 and swivel nut 5, the diameter of the centre bore of valve seat 11 are more than the diameter of push rod body 601 so that the energy of push rod body 601
Enough insert in the centre bore of valve seat 11, to be contacted with big valve core 9 and small valve core 10.Second spring 13, which is used to apply push rod, makes it
The active force moved axially towards the direction away from big valve core 9 and small valve core 10, second spring 13 are sheathed on push rod sheet
On body 601 and second spring 13 is clipped between piston 602 and feed liquor set 3, and one end of second spring 13 is against the inwall of feed liquor set 3
On, 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 during feed liquor covers 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 and valve pocket 4 are spiral shell
Line connects, and the end of feed liquor set 3 is 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 pass through
The 6th liquid pass hole 301, the 6th liquid pass hole 301 on feed liquor set 3 to be obliquely installed, the axis and feed liquor of the 6th liquid pass hole 301
There is angle between the axis of set 3 and the angle is acute angle.6th liquid pass hole 301 is through setting in the side wall of feed liquor set 3
Circular hole, the 6th liquid pass hole 301 is evenly distributed multiple, the 6th liquid pass hole 301 and feed liquor set 3 in the side wall of feed liquor set 3
Hollow cavity connect and all 6th liquid pass holes 301 be distributed in around hollow cavity, the 6th liquid pass hole 301 and with valve body 2
The 3rd opening 204 205 be connected with the 4th opening.6th liquid pass hole 301 is the valve towards outside in the side wall of feed liquor set 3
11 positions of seat tilt extension, and the axis that the axis of the 6th liquid pass hole 301 and feed liquor cover 3 intersects and angle between the two is small
In 90 degree.6th liquid pass hole 301 is designed using inclined hole so that liquid is more smooth by being flowed during six liquid pass holes 301, resistance damage
Mistake 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 accommodating cavity for accommodating push rod body 601
306 and the 5th accommodating cavity 307 of valve seat 11 is accommodated, the first accommodating cavity 303, the second accommodating cavity 304, the 3rd accommodating cavity 305, the
Four accommodating cavities 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, the second accommodating cavity
304th, the 3rd accommodating cavity 305, the 4th accommodating cavity 306 and the 5th accommodating cavity 307 are circular cavity and 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 is are coaxially disposed, the first accommodating cavity 303
Diameter be more than the diameter of the second accommodating cavity 304, the diameter of the second accommodating cavity 304 is more than the diameter of the 3rd accommodating cavity 305, the 4th
The diameter of 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 4th accommodating cavity 306
Diameter, the diameter of the 3rd accommodating cavity 305 is equal with the diameter of push rod body 601, and swivel nut 5 is inserted in the first accommodating cavity 303
And be fixedly connected with feed liquor set 3, the diameter of the second accommodating cavity 304 is less than the diameter of piston 602 so that piston 602 is only capable of in spiral shell
The inside of set 5 moves.First accommodating cavity 303, the second accommodating cavity 304, the 3rd accommodating cavity 305, the 4th accommodating cavity 306 and
Five accommodating cavities 307 form the hollow cavity of feed liquor set 3, and the first accommodating cavity 303 and the 5th accommodating cavity 307 are respectively in feed liquor set 3
Opening is formed on the end face of both ends, the overall diameter of valve seat 11 is equal with the diameter of the 5th accommodating cavity 307, and valve seat 11 is placed in the 5th
In accommodating cavity 307 and valve seat 11 is engaged with feed liquor set 3 by valve pocket 4 and is fixedly clamped.The of 6th liquid pass hole 301 and feed liquor set 3
Four accommodating cavities 306 are connected, and all 6th liquid pass holes 301 are distributed in around the 4th accommodating cavity 306, the 4th accommodating cavity 306
And connected 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 is inserted in valve body 2
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 is used
It is connected, is flowed into the fluid in hydraulic control one-way valve by swivel nut 5 in upright post jack, column in the upright post jack with outside
Fluid in 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, swivel nut
5 other end 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 the first work
Make mouth 502 (i.e. the first working hole B) and accommodate the 6th accommodating cavity 503 of valve rod, the first working hole 502 is the stretching from swivel nut 5
The end face at end starts the circular hole extended along the inside for being axially facing swivel nut 5 of swivel nut 5, one end of swivel nut 5 for external part and this stretch
Go out end to insert in the valve pocket of valve body 2 for insertion end and the insertion end positioned at the outside of valve body 2, the other end of swivel nut 5.6th is accommodating
The diameter of chamber 503 is identical with the overall diameter size of piston 602, and the diameter of the first working hole 502 is less than the straight of the 6th accommodating cavity 503
Footpath, the first working hole 502 connect with the 6th accommodating cavity 503.6th accommodating cavity 503 is the circular cavity for the inside for being arranged at swivel nut 5
Body, the 6th accommodating cavity 503 prolong for the inside for being axially facing feed liquor set 3 along feed liquor set 3 since the end face of the insertion end of swivel nut 5
The cavity to be formed is stretched, the 6th accommodating cavity 503 and the first working hole 502 are coaxial.The 5th mistake for allowing liquid to pass through is additionally provided with swivel nut 5
Fluid apertures 501, the 5th liquid pass hole 501 is to be obliquely installed on swivel nut 5, between the axis of the 5th liquid pass hole 501 and the axis of swivel nut 5
It is acute angle with angle and the angle.For 5th liquid pass hole 501 to run through the circular hole set in the side wall of swivel nut 5, the 5th crosses liquid
Hole 501 sets multiple and multiple 5th liquid pass holes 501 to be uniformly distributed circumferentially in the side wall of swivel nut 5, and multiple five cross liquid
Hole 501 is distributed in the surrounding of the first working hole 502 and the first working hole 502 is connected with the 5th liquid pass hole 501, the 5th liquid pass hole
501 and 209 it is connected with the 7th opening 208 on valve body 2 and the 8th opening.Interior of 5th liquid pass hole 501 in swivel nut 5
Extension is tilted, the axis of the 5th liquid pass hole 501 intersects with the axis of swivel nut 5 and angle between the two is less than 90 degree.5th mistake
Fluid apertures 501 is designed using inclined hole so that liquid is more smooth by being flowed during five liquid pass holes 501, and drag losses is smaller, Er Qiegeng
It is easily worked.There is angle between the axis of the 6th liquid pass hole 301 and the axis of the 5th liquid pass hole 501 on same axial direction
And the angle is also acute angle, the 501 V-shaped arrangement of axis and the 5th liquid pass hole of the 6th liquid pass hole 301 on same axial direction.
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 covers 3 relative to feed liquor
It can be rotated around its axis, 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
Lock groove 504, 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
Feed liquor set 3 in hydraulic control one-way valve is connected through a screw thread with swivel nut 5, and feed liquor set 3 and spiral shell in the hydraulic control one-way valve of the present invention
Set 5 is linked into an integrated entity structure by screw 1, when avoiding the core assembly from dismounting because being threadedly coupled between feed liquor set 3 and swivel nut 5 and
Loosen, cause feed liquor set 3 to be split away off from swivel nut 5, linked into an integrated entity by the feed liquor of screw 1 set 3 with swivel nut 5,
Be not in the problem of coming off, improve the reliability connected between feed liquor set 3 and swivel nut 5, and improve the valve element group of the present invention
Operating efficiency when part 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 quantity of internal thread hole 302
Identical with the quantity of screw 1, each screw 1 is respectively embedded into an internal thread hole 302, the axis and feed liquor of internal thread hole 302
The axis perpendicular of set 3, all internal thread holes 302 are distributed in the surrounding of the first accommodating cavity 303, internal thread hole 302 and to enter
The through hole of setting is extended radially through in the side wall of liquid set 3.Lock groove 504 is arranged at the end of the first accommodating cavity of insertion 303 of swivel nut 5
On the periphery in portion, all screws 1 are distributed in the surrounding of lock groove 504, and a part for screw 1 is inserted in internal thread hole 302, spiral shell
In another part insertion lock groove 504 of nail 1, so as to which screw 1 can play position-limiting action to swivel nut 5 in the axial direction so that enter
Liquid 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 the energy of swivel nut 5
It is enough to be rotated relative to feed liquor set 3, dismantled when the core assembly of the present invention is arranged in the valve pocket of valve body 2 or from valve pocket
When, swivel nut 5 can be rotated and make in the rotary course of swivel nut 5 feed liquor set 3 remain to swivel nut 5 keep connection status, feed liquor set 3 with
It will not be separated between swivel nut 5.And due to being provided with the O-ring seal of quality of rubber materials, sealing between feed liquor set 3 and valve body 2
Circle is clipped between feed liquor set 3 and the internal face of valve body 2, frictional force is present between sealing ring and feed liquor set 3 and valve body 2, is so existed
When swivel nut 5 rotates relative to valve body 2, the presence of sealing ring cause it is relatively unrotatable between feed liquor set 3 and valve pocket 4 and valve body 2,
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 from separating.
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 the in the side wall of valve pocket 4
For four liquid pass holes 402 to be uniformly distributed circumferentially in the side wall of valve pocket 4, multiple 4th liquid pass holes 402 are distributed in the four of big valve core 9
All and the 4th liquid pass hole 402 can connect with the hollow cavity of valve pocket 4, and the 4th liquid pass hole 402 is simultaneously open with the 5th on valve body 2
206 are connected with the 6th opening 207.4th liquid pass hole 402 tilts extension in the interior of valve pocket 4, the 4th liquid pass hole 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 designed using inclined hole 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.On same axial direction
The axis of the 6th liquid pass hole 301 and the axis of the 4th liquid pass hole 402 between there is angle and the angle to be also acute angle, in same
The 402 V-shaped arrangement of axis and the 4th liquid pass hole of the 6th liquid pass hole 301 on one 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
The connecting portions 407 of the connection of set 3, for the first guide part 408 for being play the guiding role to big valve core 9 and for being risen to differential valve element 7
Second guide part 409 of guide effect, connecting portion 407, the first guide part 408 and the second guide part 409 are along the axial direction of valve pocket 4
Set gradually and be fixedly connected sequentially, i.e., valve pocket 4 is connected by connecting portion 407, the first guide part 408 and the second guide part 409
Form, connecting portion 407, the first guide part 408 and the second guide part 409 are cirque structure, and connecting portion 407, first is oriented to
For the guide part 409 of portion 408 and second to be coaxially disposed, the overall diameter of connecting portion 407 is more than the overall diameter of the first guide part 408, even
The interior diameter of socket part 407 is more than the interior diameter of the first guide part 408.In the centre bore of the insertion connecting portion 407 of feed liquor set 3 and with connecting
Socket part 407 is threaded connection, and the internal face of connecting portion 407 is provided with internal thread, and the interior diameter of connecting portion 407 is centre bore
Diameter.Big valve core 9 is inserted in the centre bore of the first guide part 408, the center of the overall diameter of big valve core 9 and the first guide part 408
The diameter in hole is equal, and the interior diameter of the first guide part 408 is the diameter of centre bore.The overall diameter of first guide part 408
Less than the overall diameter of the second guide part 409, the interior diameter of the first guide part 408 is more than the interior diameter of the second guide part 409, so as to
The limited step for playing position-limiting action to big valve core 9 in the axial direction is formed between first guide part 408 and the second guide part 409.
Differential valve element 7 is inserted in the centre bore of the second guide part 409, the centre bore of the overall diameter of differential valve element 7 and the second guide part 409
Diameter it is equal.The diameter of the centre bore of second guide part 409 is less than the diameter of the centre bore of the first guide part 408, the
The centre bore of one guide part 408 forms the big footpath chamber 404 for accommodating big valve core 9, and the centre bore formation receiving of the second guide part 409 is poor
The path chamber 403 of movable valve plug 7, the diameter of path chamber 403 are less than the diameter of big footpath chamber 404.
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 411 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
Move in direction.First liquid pass hole 411 is the through hole that setting is extended radially through on the periphery of the first guide part 408 of valve pocket 4
And first liquid pass hole 411 be circular hole, the axis of the first liquid pass hole 411 and the axis perpendicular of valve pocket 4, the first liquid pass hole 411 with
Big footpath chamber 404 connects, and the first liquid pass hole 411 is simultaneously connected with the 5th opening 206 on valve body 2 and the 6th opening 207.When the 5th
Be open pressure increase at 206 when, namely the 5th working hole A1 at during pressure increase, the liquid outside valve pocket 4 is through the first liquid pass hole
411 flow into the inside of valve pockets 4, namely liquid inside upright post jack flows through the 5th working hole A1 and the first liquid pass hole 411
At to differential valve element 7, liquid applies pressure to differential valve element 7, and the direction for promoting differential valve element 7 to be directed away from valve seat 11 is moved
It is dynamic, 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 and valve seat 11
Separation, realizes the automatic opening of check valve so that the 6th liquid pass hole 301 is connected with the 4th liquid pass hole 402, and relief passage is opened,
Liquid in the cavity of resorption of upright post jack flows to through the 5th working hole A1, the 4th liquid pass hole 402 and the 6th liquid pass hole 301 successively
In 3rd working hole PA, automatically unloading is realized.
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 411
The second liquid pass hole 701, valve pocket 4 has the liquid flow for allowing liquid to connect and allow inside valve pocket 4 by and with the second liquid pass hole 701
The 3rd liquid pass hole gone out, it is arranged with valve pocket 4 for controlling the opening and closing of the 3rd liquid pass hole and distending and the chokes set shunk can be carried out
20.Differential valve element 7 is the cylinder of one end open, other end closing and inner hollow, and the openend of differential valve element 7 is towards small valve
Core 10, differential valve element 7 are to be coaxially disposed with small valve core 10 and big valve core 9.The inside of differential valve element 7 has admission chamber 705 and entered
Sap cavity 705 is formed on the end face for facing small valve core 10 of differential valve element 7 allows the opening that small valve core 10 passes through, and admission chamber 705 is
Circular cavity, small valve core 10 can be inserted into the admission chamber 705 of differential valve element 7 and admission chamber 705 and small valve core 10 are coaxial, admission chamber
705 length is less than the length of differential valve element 7, and admission chamber 705 is connected with the second liquid pass hole 701, and the second liquid pass hole 701 is located at
Admission chamber 705 radially and the second liquid pass hole 701 connects with admission chamber 705, the second liquid pass hole 701 makes admission chamber 705 and valve
The big footpath chamber 404 of set 4 is in connected state all the time, and the second liquid pass hole 701 also makes admission chamber 705 be in the first liquid pass hole 411
Connected state, the liquid entered through the first liquid pass hole 411 in the big footpath chamber 404 of valve pocket 4 are flowed into differential by the second liquid pass hole 701
In the admission chamber 705 of valve element 7, the differential valve element 7 of liquid-driving moves during beneficial to automatically unloading.
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 the periphery in feed liquor portion 704
On extend radially through the through hole of setting 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 are distributed to be evenly distributed multiple and all second liquid pass holes 701 in feed liquor portion 704
Around admission chamber 705.Support sector 703 is cylinder, and support sector 703 is fixedly connected and supported with one end of feed liquor portion 704
With feed liquor portion 704 to be coaxially disposed, support sector 703 closes the one end open of admission chamber 705 in portion 703, feed liquor portion 704 and support
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 in portion 703.Support sector 703 inserts
In the path chamber 403 for entering valve pocket 4, feed liquor portion 704 is inserted in the big footpath chamber 404 of valve pocket 4, and the diameter of support sector 703 is more than feed liquor
The overall diameter in portion 704, the length of support sector 703 are less than the length of feed liquor portion 704, the diameter of support sector 703 and the path of valve pocket 4
The diameter of chamber 403 is identical, and the overall diameter of big valve core 9 is identical with the diameter of the big footpath chamber 404 of valve pocket 4, big valve core 9
Interior diameter is identical with the overall diameter size of feed liquor portion 704.
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, after closed check valve
Good sealing effect, reliability are high.The first spring 12 is provided between differential valve element 7 and small valve core 10, the first spring 12 is used for difference
Movable valve plug 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 simultaneously passes through
Small valve core 10 promotes big valve core 9 towards movement at valve seat 11 until big valve core 9 contacts realization sealing, the first spring 12 with valve seat 11
In the admission chamber 705 of differential valve element 7 and the first spring 12 is clipped in the internal face of differential valve element 7 and the sealing of small valve core 10
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 end face of the sealing of small valve core 10
On, the first spring 12 is cylindrically coiled spring.In the presence of the first spring 12, small valve core 10 is done with differential valve element 7 mutually to deviate 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 it
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 differential valve element 7 in release
Big valve core 9 can be driven 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 oneself
Dynamic release.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 10 and big
Gap between valve element 9 connects with the 6th liquid pass hole 301 on feed liquor set 3.Contacted in the sealing surface of small valve core 10 with big valve core 9
Afterwards, the sealing on small valve core 10 separates the gap between the admission chamber 705 and small valve core 10 and big valve core 9 of differential valve element 7,
And then the admission chamber 705 of differential valve element 7 is not connected with the 6th liquid pass hole 301 on feed liquor set 3.Carried out in upright post jack
When setting prop acts, 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 core 9 and valve seat
11 separation, open locked cavity, realize the unlatching of hydraulic control one-way valve, and liquid is flowed into hydraulic control one-way valve through the 3rd opening 204, flowed into
Liquid in hydraulic control one-way valve is flowed into the 5th opening 206 through the 6th liquid pass hole 301 and the 4th liquid pass hole 402 successively, and liquid is most
Enter eventually in the cavity of resorption of upright post jack, realize the setting prop action of upright post jack.Opposite, carry out drop post in upright post jack
When, the liquid in the cavity of resorption of upright post jack is flowed into hydraulic control one-way valves through the 5th opening 206, and final liquid is through the 3rd opening
204 outflow hydraulic control one-way valves.
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, differential valve element
7 have the chute 702 for allowing link gear to be embedded in, and link gear includes the He of sliding part 21 in embedded mounting hole 901 and chute 702
It is arranged in mounting hole 901 and the locating part 22 of position-limiting action is played to sliding part 21.Mounting hole 901 is the side wall in big valve core 9
On extend radially through the through hole of setting and mounting hole 901 is circumferentially uniformly arranged multiple, chute 702 in the side wall of big valve core 9
For on the periphery of differential valve element 7 along the annular groove entirely circumferentially extended.Sliding part 21 is preferably spherical, and locating part 22 is excellent
Elect as in insertion mounting hole 901 and be the screw that is threadedly coupled with big valve core 9, mounting hole 901 is internal thread hole.Locating part 22 is twisted
Enter in mounting hole 901, sliding part 21 is compressed so that in the embedded mounting hole 901 of a part of sliding part 21, another part insertion
In chute 702, so as to realize the connection between big valve core 9 and differential valve element 7, and big valve core 9 and different valve can be made
It can be relatively rotated between core 7, big valve core 9 will not separate with differential valve element 7, and link gear causes big valve core 9, different valve
Core 7, the spring 12 of small valve core 10 and first is formed inside valve pocket 4 can synchronization-moving integrative-structure.Chute 702 has certain
Length, sliding part 21 are the spherical partses to match with chute 702, and the length of chute 702 is more than the diameter of sliding part 21 so that big
Valve element 9 can be movable along the axial direction relative to differential valve element 7.Chute 702 is recessed on the periphery of feed liquor portion 704 to be arranged at
Groove, in the axial direction of differential valve element 7, the second liquid pass hole 701 is between support sector 703 and chute 702.
As preferable, as shown in Figure 1, Figure 2, shown in Fig. 8 and Figure 10, it is edge that sliding part 21, which sets multiple and multiple sliding parts 21,
Circumferentially it is uniformly distributed, the quantity of mounting hole 901 and locating part 22 is identical with the quantity of sliding part 21, and each locating part 22 is distinguished embedding
Enter in a mounting hole 901, each sliding part 21 is respectively embedded into a mounting hole 901, the axis and big valve core of mounting hole 901
9 axis perpendicular, 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 and valve of big valve core 9
It is linear contact lay between seat 11, forms sealing ring.Valve pocket 4 is play the guiding role to differential valve element 7, and differential valve element 7 has to be connect with valve pocket 4
The sealing surface of tactile periphery and the periphery and big valve core 9 is to be coaxially disposed, and the diameter of the periphery of differential valve element 7 is more than
The diameter with the sealing ring at the contact site of valve seat 11 on the sealing surface of big valve core 9, namely the diameter of support sector 703 are more than greatly
On the sealing surface of valve element 9 with the diameter at the contact site of valve seat 11, O-ring seal is provided between support sector 703 and valve pocket 4,
Sealing is realized, the sealing ring is clipped between the inner headed face of support sector 703 and valve pocket 4.So pass through the different-diameter of sealing position
With pressure dependence, the action under pressure differential could be completed, realizes the automatic opening of check valve and automatic unloading.
As shown in Figure 1, Figure 2, shown in Fig. 6 and Figure 11, the 3rd liquid pass hole is on the periphery of the first guide part 408 of valve pocket 4
Extend radially through the through hole of setting and the 3rd liquid pass hole is circular hole, the axis of the 3rd liquid pass hole and the axis perpendicular of valve pocket 4, the
Three liquid pass holes are that the big footpath chamber that multiple and all 3rd liquid pass holes are distributed in valve pocket 4 is evenly distributed on the first guide part 408
Around 404, the 3rd liquid pass hole connects with big footpath chamber 404.First liquid pass hole 411 is in the outer of the first guide part 408 of valve pocket 4
Extend radially through the through hole of setting on disc and the first liquid pass hole 411 be circular hole, the second liquid pass hole 701 and the 3rd liquid pass hole it is straight
Footpath is all higher than the diameter of the first liquid pass hole 411, the axis of the first liquid pass hole 411 and the axis perpendicular of valve pocket 4, the first liquid pass hole
411 set one.In the axial direction of valve pocket 4, the first liquid pass hole 411 is between the 3rd liquid pass hole and the 4th liquid pass hole.Valve pocket 4
With the storage tank 406 for accommodating chokes set 20, storage tank 406 is along the annular entirely circumferentially extended on the periphery of valve pocket 4
Groove, the 3rd liquid pass hole form opening in the inner bottom wall of storage tank 406, and chokes set 20 is cirque structure, and chokes set 20 exists
It is sheathed at corresponding 3rd liquid pass hole position on valve pocket 4, all 3rd liquid pass holes are located at the inner side of chokes set 20, chokes set
20 inner headed face can be contacted with the inner bottom wall of storage tank 406, and then the 3rd liquid pass hole is closed, the 3rd liquid pass hole after closing with
The valve pocket of valve body 2 and the 5th working hole A1 are not connected.After chokes set 20 separates with the inner bottom wall of storage tank 406, the 3rd can be made
Liquid pass hole is opened, and the valve pocket and the 5th working hole A1 for making the 3rd liquid pass hole and valve body 2 connect.Chokes set 20 is elastomer, chokes
Cover 20 flexible, chokes set 20 has certain elastic deformation amount, and the material that chokes cover 20 is preferably polyformaldehyde, resilience
It is good.After chokes cover 20 distendings, the diameter increase of chokes set 20, chokes set 20 can separate with the inner bottom wall of storage tank 406；Chokes set
After 20 shrink, the diameter of chokes set 20 reduces, and chokes set 20 is contacted with the inner bottom wall of storage tank 406, and the 3rd liquid pass hole is closed.
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 He of the first guide part 408
The flange 410 being fixedly connected on second guide part 409 and with the first guide part 408 and the second guide part 409, flange 410 are circle
Loop configuration, flange 410 are protruded radially toward the outside of the first guide part 408 and the second guide part 409, and storage tank 406 is set
It is placed on the periphery of flange 410, the overall diameter of flange 410 is 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 so that the 3rd liquid pass hole can be with the valve pocket and the 5th working hole of valve body 2
A1 is connected.In the axial direction of valve pocket 4, the 3rd liquid pass hole is between the 4th liquid pass hole 402 and the second guide part 409.
When pressure increases at the 5th working hole A1, liquid positioned at valve pocket 4 outside surrounds chokes set 20, chokes cover 20 by
To liquid apply pressure, chokes set 20 not expansion and remain retracted state, and then by the 3rd liquid pass hole close so that the 5th
Liquid in working hole A1 can only flow into the inside of valve pocket 4 to promote differential valve element 7 through the first liquid pass hole 411.It is very heavy in column
When jacking row setting prop acts, push rod is needed to promote small valve core 10 and big valve core 9 to be directed away from the direction movement of valve seat 11 to realize liquid
The unlatching of check valve is controlled, now the pressure increase inside differential valve element 7 and valve pocket 4, chokes set 20 is by the liquid inside valve pocket 4
The pressure of application, the expansion of chokes set 20, and then the 3rd liquid pass hole is opened, the valve pocket of the 3rd liquid pass hole after opening and valve body 2
Connected with the 5th working hole A1, and then the liquid inside valve element and valve pocket 4 is flowed into the 5th working hole A1 through the 3rd liquid pass hole, is made
Obtaining big valve core 9 and small valve core 10 can quickly move, and realize the quick unlatching of hydraulic control one-way valve.Therefore, the setting of chokes set 20
Hydraulic control one-way valve when post drops in the quick unlatching of hydraulic control one-way valve and upright post jack during upright post jack feed liquor setting prop can be ensured
Close, the uninstall action twice of guarantee big valve core 9 and small valve core 10 smoothly completes.In a word, the effect of chokes set 20 is to slow down
Big valve core to valve seat move when speed, prevent occurring larger hydraulic shock when hydraulic control one-way valve from closing.
As shown in figure 11, to be sheathed on the cirque structure on valve pocket 4, chokes set 20 is provided with a cutting and stitched chokes set 20
Mouth 23, cutting sealing 23 disconnect chokes set 20 in the circumferential, and cutting sealing 23 is one from chokes set 20 on chokes set 20
End end starts to extend to the other end end face of chokes set 20, and the both ends end face of chokes set 20 is flat with its axis perpendicular
Face.The setting of cutting sealing 23, be advantageous to rapid expanding and the contraction of chokes set 20, improve reliability.
As shown in Figure 1, Figure 2, shown in Fig. 6 and Figure 13, pressure regulating device includes pressure-regulating sleeve 17, is movably arranged in pressure-regulating sleeve 17
Portion and contacted with differential valve element 7 spring base 8, be arranged at the inside of pressure-regulating sleeve 17 and be the pressure regulation spiral shell that is threadedly coupled with pressure-regulating sleeve 17
Silk 19, the pressure spring 18 being arranged between voltage regulation screw 19 and spring base 8 and the unidirectional damping being arranged inside spring base 8
Mechanism, valve pocket 4, which has, allows the pilot hole 405 that spring base 8 passes through.Pilot hole 405 is to be arranged in the inside of the second guide part 409
Circular hole at the heart, pilot hole 405 and big footpath chamber 404 and path chamber 403 is coaxially disposed and the diameter of pilot hole 405 is less than path chamber
403 diameter.In the axial direction of valve pocket 4, path chamber 403 is located between pilot hole 405 and big footpath chamber 404 and three connects.Valve
Set 4 is used to play pressure-regulating sleeve 17 and spring base 8 axial limiting effect, and pressure-regulating sleeve 17, to be threadedly coupled, realizes pressure regulation with valve body 2
Fixation of the mechanism on valve body 2, the periphery of pressure-regulating sleeve 17 are provided with external screw thread, and the inner headed face of valve body 2 is provided with internal thread.Adjust
Gland 17 is both ends open and the cylinder of inner hollow, and voltage regulation screw 19, spring base 8 and pressure spring 18 are arranged at pressure-regulating sleeve
In 17 hollow cavity.Voltage regulation screw 19 closes the one end open of pressure-regulating sleeve 17, the other end end face of valve pocket 4 and pressure-regulating sleeve 17
Contact and valve pocket 4 closes the end opening of pressure-regulating sleeve 17.Spring base 8 passes through the pilot hole 405 of valve pocket 4 and inserts air storing cavity 24
In, air storing cavity 24 is positioned at the inside of valve pocket 4 and the end face phase with differential valve element 7 in the end face and valve pocket 4 of differential valve element 7
To inner bottom surface between cavity, the end face of differential valve element 7 and the inner bottom surface of valve pocket 4 are flat with the axis perpendicular of valve pocket 4
Face, i.e. air storing cavity 24 are a part for the path chamber 403 of valve pocket 4, and air storing cavity 24 is positioned at the differential guide part of valve element 7 and second
Cavity between 409, liquid is introduced into air storing cavity 24, spring base 8 is clipped between pressure spring 18 and differential valve element 7, pressure regulation
The active force that spring 18 applies to spring base 8 makes spring base 8 remain contact condition with differential valve element 7, and then to different valve
Core 7 applies elastic acting force vertically.Pressure spring 18 simultaneously is used to promote differential valve element 7 towards the direction close to valve seat 11 to enter
Row movement, realizes the reset of differential valve element 7, and then realize the closing of hydraulic control one-way valve.
As shown in Figure 1, Figure 2, shown in Fig. 6 and Figure 13, voltage regulation screw 19 is cylinder, and voltage regulation screw 19 and pressure-regulating sleeve 17 are screw thread
Connection, the periphery of voltage regulation screw 19 are provided with external screw thread, and the inner headed face of pressure-regulating sleeve 17 is provided with internal thread, and voltage regulation screw 19 exists
Position-adjustable inside pressure-regulating sleeve 17, therefore voltage regulation screw 19 is set to be threadedly coupled with pressure-regulating sleeve 17, so it is easy to
Adjust axial location of the voltage regulation screw 19 in pressure-regulating sleeve 17.Pressure spring 18 is clipped between spring base 8 and voltage regulation screw 19, is adjusted
When pressure screw 19 is in diverse location, the pretightning force of pressure spring 18 is of different sizes, therefore can realize that hydraulic control one-way valve works
The regulation of pressure size, hydraulic control one-way valve is can adapt to the job requirement of different pressures, improve the general of hydraulic control one-way valve
Property.
As shown in Figure 1, Figure 2, shown in Fig. 6 and Figure 12, spring base 8 is by limiting section 801, first boss 802 and second boss 803
Form, limiting section 801, first boss 802 and second boss 803 are cylinder, and first boss 802 and second boss 803 are divided
It is not fixedly connected in the side of limiting section 801 with limiting section 801, forms the spring base 8 of integrative-structure.First boss 802 and
Two boss 803 are coaxially disposed with limiting section 801, and the overall diameter of limiting section 801 is more than first boss 802 and second boss 803
Overall diameter.Pressure spring 18 is cylindrically coiled spring, and second boss 803 is for insertion into pressure spring 18 to pressure spring 18
One end positioned.The overall diameter of first boss 802 is identical with the diameter of the pilot hole 405 on valve pocket 4, first boss
Contacted in 802 one end insertion air storing cavity 24 with differential valve element 7, the other end of first boss 802 is with being located inside pressure-regulating sleeve 17
Limiting section 801 be fixedly connected, limiting section 801 is located in the hollow cavity of pressure-regulating sleeve 17, and the overall diameter of limiting section 801, which is more than, leads
To the diameter in hole 405.After hydraulic control one-way valve closing, valve pocket 4 contacts with limiting section 801, and valve pocket 4 plays spacing to spring base 8
Effect.Unidirectional damping mechanism is arranged at the inside of spring base 8, and the gas that unidirectional damping mechanism is arranged on air storing cavity 24 flows into pressure regulation
Unidirectional damping effect is played during in the hollow cavity of set 17 so that spring base 8 can play buffering to differential valve element 7 and make
With causing pressure change and the effect in pressure spring 18 when preventing differential valve element 7 from driving big valve core 9 to open release after moving
Lower big valve core 9 produces punching towards valve seat 11 when quickly movement causes the working conditions such as pressure moment rise to close after discharge channel
The generation of pressure phenomenon is hit, and when the setting of unidirectional damping mechanism is also possible to prevent hydraulic control one-way valve and is again turned on and is again switched off
Differential valve element 7 and big valve core 9 frequently move repeatedly and produce the generation of percussive pressure phenomenon, improve the stabilization of hydraulic control one-way valve
Property, also improve the stability of whole hydraulic system.
As shown in Figure 1, Figure 2, shown in Fig. 6 and Figure 12, unidirectional damping mechanism includes nonreturn valve core 14, screw plug 16 and is arranged at list
To the back-moving spring 15 between valve element 14 and screw plug 16, the inside of spring base 8 is provided with the valve for accommodating nonreturn valve core 14 and screw plug 16
Chamber 806, air admission hole 805 and the intercommunicating pore 804 for connecting the hollow cavity of valve pocket 4 and air admission hole 805, air admission hole 805 it is straight
Footpath is less than the diameter of valve pocket 806 and nonreturn valve core 14.Valve pocket 806 is to be arranged at the circular cavity at the inside center of spring base 8, is entered
Stomata 805 is to be arranged at the circular hole at the inside center hole of spring base 8, and air admission hole 805 is to be coaxially disposed with valve pocket 806.Intercommunicating pore
804 be circular hole, and the axis of intercommunicating pore 804 and the axis perpendicular of air admission hole 805, the diameter of intercommunicating pore 804 are less than air admission hole 805
Diameter, intercommunicating pore 804 can also be used as damping hole.Intercommunicating pore 804 is that beginning is convex along first on the periphery of first boss 802
Platform 802 is extended radially at air admission hole 805, and air admission hole 805 is arranged at the inside center hole of first boss 802, intercommunicating pore
804 end face contacted with differential valve element 7 for being located proximate to first boss 802, in first boss 802 where intercommunicating pore 804
End is always positioned in air storing cavity 24, so that the air storing cavity 24 of air admission hole 805 remains connected state.In differential valve element 7
When being directed away from the direction movement of valve seat 11, air in air storing cavity 24 is pushed into stomata 805 by differential valve element 7, is then pushed open
Nonreturn valve core 14, final air after valve pocket 806 and screw plug 16 into pressure-regulating sleeve 17 hollow cavity in, pressure-regulating sleeve 17 it is hollow
Also liquid is introduced into inner chamber.
As shown in Figure 1, Figure 2, shown in Fig. 6 and Figure 12, screw plug 16 is cylinder, and screw plug 16 is to be threadedly coupled with spring base 8, screw plug
16 with the through hole that the valve pocket 806 of spring base 8 connects with the hollow cavity of pressure-regulating sleeve 17 is made, and the through hole is at the center of screw plug 16
Axially through the circular hole of setting, the through hole causes the valve pocket 806 of spring base 8 and the hollow cavity of pressure-regulating sleeve 17 to be in all the time at place
Connected state.The inside of spring base 8 has the internal thread hole for accommodating screw plug 16 and the internal thread hole faces pressure regulation in spring base 8
Formed on the end face of screw 19 and allow the opening that screw plug 16 passes through, the diameter of the internal thread hole is more than the straight of the valve pocket 806 of spring base 8
Footpath, the periphery of screw plug 16 are provided with external screw thread.Screw plug 16, to be coaxially disposed, screw plug 16 and spring base 8 is set with spring base 8
Into threaded connection, facilitate the dismounting of unidirectional damping mechanism, be easy to the maintenance of hydraulic control one-way valve.
As shown in Figure 1, Figure 2 with shown in Figure 12, back-moving spring 15 is cylindrically coiled spring, and back-moving spring 15 is clipped in nonreturn valve core 14
Between screw plug 16.Nonreturn valve core 14 is preferably spherical, and the diameter of nonreturn valve core 14 is more than the diameter of air admission hole 805, check valve
The diameter of core 14 be less than spring base 8 valve pocket 806 diameter, nonreturn valve core 14 between air admission hole 805 and back-moving spring 15,
Back-moving spring 15 is used to promote nonreturn valve core 14 to move towards the direction close to air admission hole 805, by the envelope of air admission hole 805
Close, air admission hole 805 is not connected with the valve pocket 806 of spring base 8.Air in air storing cavity 24 is pushed into air inlet by movable valve plug 7 of being on duty
In hole 805, make caused by the counteracted by pressure back-moving spring 15 that applies into the compressed air in air admission hole 805 to nonreturn valve core 14
Firmly, nonreturn valve core 14 moves towards the direction close to screw plug 16, air admission hole 805 is opened so that air admission hole 805 and bullet
The valve pocket 806 of spring abutment 8 connects.
As shown in Figure 1, Figure 2 with shown in Figure 14, 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 14) of hydraulic control one-way valve and the 7th working hole PB (i.e. work in Figure 14
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 14) of hydraulic control one-way valve and the 5th work
Make mouth A1 (i.e. working hole A in Figure 14) 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 14
Working hole PA) and the 8th working hole PB, (i.e. working hole PB in Figure 14) and the hydraulic control one-way valve for connecing other adjacent frame, hydraulic control list
To valve the 6th working hole A2 (i.e. working hole A2 in Figure 14) be used for outside pressure gauge or pressure sensor be connected with
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 so that
Upright post jack overcomes top roof pressure and risen, after upright post jack rises to predetermined altitude, three position four-way directional control valve
Stop the 3rd working hole feed flow to hydraulic control one-way valve, the core assembly of hydraulic control one-way valve is due to the spring effect reset shape of inside
Into locking states, 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 hydraulic control one-way valve
In fluid promote the push rod movement of core assembly, and then big valve core 9 is separated with valve seat 11, opening locked cavity, while fluid
Enter 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 is reverse
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 column thousand
Jin top declines, and when upright post jack drops to desired height, three position four-way directional control valve stops the 7th work to hydraulic control one-way valve
Make confession liquid, the core assembly of hydraulic control one-way valve is because the spring effect of inside resets to form locking states, and now column is very heavy
Recover holding state in top.
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 unloading for upright post jack
Carry, 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 external
Overflow valve realizes release, and liquid will not be discharged into outside hydraulic system, will not thus cause liquid waste and impurely under
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 unloading hydraulic control one-way valve automatically, including swivel nut, feed liquor set, valve seat, valve pocket, it is arranged inside valve pocket
Big valve core 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 the differential valve element that the big valve core moves.
2. the core assembly of automatic unloading hydraulic control one-way valve according to claim 1, it is characterised in that：The valve pocket has
Allow liquid by and flow liquid into inside valve pocket to promote the first liquid pass hole that the differential valve element moves, differential valve element movement
While drive the big valve core be directed away from valve seat direction movement.
3. the core assembly of automatic unloading hydraulic control one-way valve according to claim 2, it is characterised in that：The differential valve element
With the second liquid pass hole for allowing liquid to be connected by and with first liquid pass hole, the valve pocket, which has, allows liquid by and with the
3rd liquid pass hole of the liquid outflow that two liquid pass holes are connected and allowed inside valve pocket, it is arranged with for controlling the 3rd liquid pass hole on valve pocket
The chokes set for being opened and closed and distending being carried out and shunk.
4. the core assembly of automatic unloading hydraulic control one-way valve according to any one of claims 1 to 3, it is characterised in that：It is described
Big valve core is sheathed on the differential valve element, and link gear, differential valve element and small valve core are provided between big valve core and differential valve element
Provided with spring, link gear is arranged to the direction for enabling differential valve element drive big valve core to be directed away from the valve seat in release
It is mobile.
5. the core assembly of automatic unloading hydraulic control one-way valve according to claim 4, it is characterised in that：The big valve core tool
There is the mounting hole for allowing the link gear to be embedded in, the differential valve element has the chute for allowing link gear to be embedded in, link gear bag
Include the sliding part in embedded mounting hole and chute and be arranged in mounting hole and the locating part of position-limiting action is played to sliding part.
6. the core assembly of automatic unloading hydraulic control one-way valve according to claim 5, it is characterised in that：The sliding part is
Spherical, for the locating part with the big valve core to be threadedly coupled, the mounting hole is internal thread hole.
7. the core assembly of automatic unloading hydraulic control one-way valve according to any one of claims 1 to 6, it is characterised in that：It is described
Swivel nut is connected by screw and feed liquor set, and for feed liquor set with the internal thread hole for allowing screw to insert, swivel nut, which has, allows screw to insert
The lock groove entered, for feed liquor set with the valve pocket to be threadedly coupled, swivel nut is to be threadedly coupled with valve body.
8. the core assembly of automatic unloading hydraulic control one-way valve according to claim 7, it is characterised in that：The lock groove is
Along the annular groove entirely circumferentially extended on the periphery of the swivel nut, it is along week that the screw, which sets multiple and multiple screws,
To being uniformly distributed.
9. according to the core assembly of any described automatic unloading hydraulic control one-way valve of claim 3 to 8, it is characterised in that：It is described
Valve pocket has the storage tank for accommodating the chokes set, and storage tank is annular recessed along what is entirely circumferentially extended on the periphery of valve pocket
Groove, chokes set is cirque structure.
10. the core assembly of automatic unloading hydraulic control one-way valve according to claim 9, it is characterised in that：The chokes set
A cutting sealing is provided with, cutting sealing disconnects chokes set in the circumferential.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711016807.4A CN107842380A (en) | 2017-10-26 | 2017-10-26 | The core assembly of automatic unloading hydraulic control one-way valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711016807.4A CN107842380A (en) | 2017-10-26 | 2017-10-26 | The core assembly of automatic unloading hydraulic control one-way valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107842380A true CN107842380A (en) | 2018-03-27 |
Family
ID=61663006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711016807.4A Withdrawn CN107842380A (en) | 2017-10-26 | 2017-10-26 | The core assembly of automatic unloading hydraulic control one-way valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107842380A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107575258A (en) * | 2017-10-27 | 2018-01-12 | 鸿大智能机械有限公司 | Automatic pressure relief device suitable for hydraulic control one-way valve |
| CN110056385A (en) * | 2019-06-04 | 2019-07-26 | 巨隆集团芜湖兴隆液压有限公司 | Core assembly and reversal valve with it |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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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2017
- 2017-10-26 CN CN201711016807.4A patent/CN107842380A/en not_active Withdrawn
Patent Citations (7)
| 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 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107575258A (en) * | 2017-10-27 | 2018-01-12 | 鸿大智能机械有限公司 | Automatic pressure relief device suitable for hydraulic control one-way valve |
| CN110056385A (en) * | 2019-06-04 | 2019-07-26 | 巨隆集团芜湖兴隆液压有限公司 | Core assembly and reversal valve with it |
| CN110056385B (en) * | 2019-06-04 | 2024-03-22 | 巨隆集团芜湖兴隆液压有限公司 | Valve core assembly and reversing valve with same |
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Application publication date: 20180327 |