CN107725081A - Soft seal high flow directional control valve - Google Patents
Soft seal high flow directional control valve Download PDFInfo
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- CN107725081A CN107725081A CN201711159065.0A CN201711159065A CN107725081A CN 107725081 A CN107725081 A CN 107725081A CN 201711159065 A CN201711159065 A CN 201711159065A CN 107725081 A CN107725081 A CN 107725081A
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- valve
- depression bar
- valve element
- bar body
- pad
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- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Lift Valve (AREA)
Abstract
The invention discloses a kind of soft seal high flow directional control valve, including liquid return valve jacket, valve seat, feed liquor valve pocket, valve element, operating mechanism and the depression bar assembly for being movably arranged in the liquid return valve jacket and being engaged with the operating mechanism, depression bar assembly includes depression bar body and is arranged on depression bar body and is used to contact with the valve element to realize the valve pad of sealing, and valve pad is made of softwood matter.The soft seal high flow directional control valve of the present invention, by setting the valve pad of softwood matter to be engaged realization sealing with valve element on depression bar body, coordinate without depression bar body and valve element and realize sealing, depression bar body need not process sealing surface, so as to simplify the structure and processing technology of depression bar body, long-term use only needs to change valve pad after causing seal failure, reduces cost, it is ensured that the reliability of sealing is high.
Description
Technical field
The invention belongs to coal mine fully-mechanized mining hydraulic support, and specifically, the present invention relates to a kind of soft seal big flow to change
To valve.
Background technology
Under the overall situation that coal mine fully-mechanized mining increasingly develops towards automation, high efficiency, high working face, the support of high impedance is got over
More to popularize, the corresponding valve that manipulates is also begun to from former low discharge middle flow gradually till now, big flow.In coal machine
Industry, reversal valve also referred to as manipulate valve or control valve.In hydraulic pressure system of hydraulic support, reversal valve controls the side of liquid stream
To the different actions such as realizing hydraulic support lifting, pushing and sliding, try to stop people from fighting each other.
At present, high flow directional control valve includes valve body and core assembly, and valve body leads back liquid provided with a main inlet opening, one
Hole and two working holes, main inlet opening and main hole for back flow are located on the same side of valve body, and two working holes are located at valve body
On same end face.Core assembly includes depression bar, liquid return valve jacket, valve seat, feed liquor valve pocket and valve element, the both ends open of valve element, interior
Portion is hollow oil duct.
The valve seat and valve element of existing high flow directional control valve, between valve element and depression bar it is hard sealing, need to be in valve seat and pressure
Sealing surface is processed on bar, valve seat and pressure rod structure are complicated, and processing technology is complicated, not easy processing, and sealing reliability is poor, and for a long time
After seal failure is caused, valve seat and depression bar need to be changed, cost is high.
The content of the invention
It is contemplated that at least solves one of technical problem present in prior art.Therefore, present invention offer is a kind of soft
Seal high flow directional control valve, it is therefore an objective to simplify depression bar processing technology, reduce cost.
To achieve these goals, the technical scheme taken of the present invention is：Soft seal high flow directional control valve, including return liquid valve
Set, valve seat, feed liquor valve pocket, valve element, operating mechanism and be movably arranged in the liquid return valve jacket and with the operating mechanism
The depression bar assembly being engaged, depression bar assembly include depression bar body and be arranged on depression bar body and be used for contacted with the valve element with
The valve pad of sealing is realized, valve pad is made of softwood matter.
The valve element has the primary sealing area for being used for contacting with the valve pad, and primary sealing area is the axis phase with valve element
Vertical plane, forming face contacts sealing between valve element and valve pad.
The primary sealing area is the end face of the end of the valve element, and the valve pad, which has, to be used to connect with primary sealing area
The first tactile mating surface, first mating surface are the end face of the end of valve pad, and the first mating surface is parallel with primary sealing area.
The depression bar assembly also includes the screw being fixed on the valve pad on the depression bar body, screw and depression bar body
For threaded connection, valve pad, which has, allows the avoid holes that screw passes through.
Sealing ring is provided between the valve pad and the depression bar body.
The valve pad includes the first seal section, guide section and the second seal section that set gradually vertically, guide section and the
Two seal sections insert the inside of the depression bar body, the first seal section be located at the outside of depression bar body and the first seal section for
The valve element contact is sealed with realizing.
The overall diameter of first seal section is more than the overall diameter of the guide section, and the overall diameter of guide section is more than described the
The overall diameter of two seal sections.
The valve seat is sheathed on the valve element and valve seat is fixedly clamped by the feed liquor valve pocket and the liquid return valve jacket, valve
Core has secondary sealing area and the secondary sealing area is circular conical surface, and valve seat, which has, to be used to contact with secondary sealing area to realize sealing
The second mating surface, valve seat is made of softwood matter.
Described soft seal high flow directional control valve also includes being sheathed on the valve element and provides guide effect to valve element
Guide pin bushing, the valve seat are sheathed on guide pin bushing.
The valve element, which has, allows the liquid pass hole that liquid passes through, and the guide pin bushing has on the outside of liquid pass hole and for by liquid
To the drainage face in liquid pass hole, drainage face is circular conical surface for guiding.
The soft seal high flow directional control valve of the present invention, by setting the valve pad of softwood matter to match with valve element on depression bar body
Close and realize sealing, coordinate without depression bar body and valve element and realize sealing, depression bar body need not process sealing surface, so as to simplification
The structure and processing technology of depression bar body, long-term use only need to change valve pad after causing seal failure, reduce cost, it is ensured that
The reliability of sealing is high.
Brief description of the drawings
This specification includes the following drawings, and shown content is respectively：
Fig. 1 is the sectional view of soft seal high flow directional control valve of the present invention；
Fig. 2 is the front view of soft seal high flow directional control valve of the present invention；
Fig. 3 is the sectional view of core assembly；
Fig. 4 is the sectional view of valve element；
Fig. 5 is the sectional view of valve seat；
Fig. 6 is the sectional view of guide pin bushing；
Fig. 7 is the sectional view of feed liquor valve pocket；
Fig. 8 is the sectional view of liquid return valve jacket；
Fig. 9 is the sectional view of depression bar assembly；
Figure 10 is the sectional view of depression bar body；
Figure 11 is the sectional view of valve pad；
Figure 12 is the sectional view of screw；
In figure mark for：1st, briquetting；2nd, valve body；3rd, feed liquor valve pocket；301st, inlet opening；302nd, the first confined planes；4th, valve pad；
401st, the first mating surface；402nd, the first seal section；403rd, guide section；404th, the second seal section；405th, avoid holes；5th, valve element；
501st, the first oil duct；502nd, the second oil duct；503rd, sealing；504th, primary sealing area；505th, secondary sealing area；506th, liquid is crossed
Hole；6th, valve seat；601st, the second mating surface；602nd, centre bore；7th, depression bar body；701st, accommodating hole；702nd, the 3rd oil duct；703rd, return
Liquid balances damping hole；704th, neck；705th, internal thread hole；8th, liquid return valve jacket；801st, hole for back flow；802nd, the second confined planes；803、
3rd confined planes；9th, guide pin bushing；901st, face is drained；902nd, section is supported；903rd, spacing section；904th, end face；905th, spigot surface；10th, connect
Head；11st, housing；12nd, handle；13rd, pressure head；14th, main inlet opening；15th, main hole for back flow；16th, lever；17th, spring；18th, screw；
19th, the 4th oil duct.
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 Figure 1 to 11, the invention provides a kind of soft seal high flow directional control valve, including valve body, lever, manipulation
Mechanism and two core assemblies.Two valve pockets for running through valve body are provided with valve body, a knot is separately installed with the valve pocket of valve body
The core assembly of structure identical plug-in.Operating mechanism includes housing, the pressure head being rotatably arranged in housing, consolidated with pressure head
Fixed connection and for operating the handle and be rotatably arranged in housing and positioned at pressure head and valve element group that pressure head rotated
Briquetting between part, lever are to be rotatably arranged in housing and the both ends of lever are respectively embedded into the depression bar body of core assembly
On 7 in set neck 704, the neck 704 is the annular groove set in the outside wall surface of depression bar body 7, the rotation of lever
Center line is parallel with the rotation centerline of briquetting and parallel with the axis of main inlet opening and main hole for back flow.Housing and valve body
End is fixedly connected, and handle extend out to the outer wall of housing, and briquetting is in the housing in enclosure interior setting two and two briquettings
It is symmetrical arranged, depression bar body 7 of each briquetting respectively with a core assembly is engaged, and pressure head is supported in one end of briquetting and pressure
The end of block is pressed on the end of each self-corresponding depression bar body 7 respectively, and the other end of briquetting is connected with housing into rotation.On valve body
Provided with main 14, main hole for back flow 15 of inlet opening and two working holes A, B, main inlet opening 14 and main hole for back flow 15 are set side by side
On the same side of valve body, two working holes A, B are located on the same end face relative with handle position of valve body side by side, and two
Individual working hole A, B are engaged with a core assembly respectively, and two working holes A, B are connected and located with a core assembly respectively
In on the parallel same axis of the length direction of valve body.It is located at the valve element of the core assembly of upside shown in working hole A and Fig. 1
Internal galleries connect, and the valve core inside oil duct of core assemblies of the working hole B with being located at downside shown in Fig. 1 connects.Opened in valve
Qi Hou, flowed out respectively from working hole A, B from the liquid that main inlet opening 14 enters in valve body by core assembly, after valve is closed,
Liquid in core assembly is from the main flow back fluid pumping plant of hole for back flow 15.
As shown in figures 1 and 3, core assembly includes depression bar assembly, liquid return valve jacket 8, valve seat 6, feed liquor valve pocket 3, the and of guide pin bushing 9
Valve element, depression bar assembly are movably to be arranged in liquid return valve jacket 8 and be engaged with operating mechanism.Insert the end of feed liquor valve pocket 3
Enter in liquid return valve jacket 8 and with liquid return valve jacket 8 to be threadedly coupled, valve seat 6 is located in liquid return valve jacket 8 and by the end face of feed liquor valve pocket 3
It is pushed against at the limited step that the inside of liquid return valve jacket 8 is set, so as to fixed valve base 6.Valve pad 4 inserts feed liquor valve pocket 3 and valve
In seat 6, depression bar assembly and valve pad 4 are removable.Liquid return valve jacket 8 is sheathed on depression bar assembly and guide pin bushing 9, inside liquid return valve jacket 8
Provided with the endoporus to match with depression bar assembly outer shape.The main body of valve element is cylinder, and valve element is both ends open, inner hollow
Structure, valve core inside is the hollow oil duct axially extended, and valve element is engaged with depression bar assembly can realize sealing.Valve seat 6
It is clipped between feed liquor valve pocket 3 and liquid return valve jacket 8, valve seat 6 is simultaneously located at the inside of liquid return valve jacket 8 and is sheathed on guide pin bushing 9, guide pin bushing 9
It is engaged and is fixedly clamped by valve seat 6 and liquid return valve jacket 8, easy disassembly, and enable core assembly to form entirety
Plug-in structure, integrated level is high, the convenient installation and removal in the valve body of reversal valve.In feed liquor valve pocket 3, valve element and return liquid valve
The through hole for allowing liquid to flow through run through, respectively inlet opening 301, liquid pass hole 506 and hole for back flow 801 are equipped with the side wall of set 8,
Main inlet opening 14 connects with the inlet opening 301 on feed liquor valve pocket 3, and hole for back flow 801 connects with main hole for back flow 15.
As shown in Fig. 1, Fig. 3, Fig. 4, Fig. 9 to Figure 11, depression bar assembly includes depression bar body 7 and is arranged on depression bar body 7
And for being contacted with valve element to realize the valve pad 4 of sealing, valve pad 4 is made of softwood matter.Depression bar body 7 is cylinder, depression bar
Body 7 and valve element is are coaxially disposed, and depression bar body 7 inserts in liquid return valve jacket 8 and one end of depression bar body 7 is from liquid return valve jacket 8
Stretch out to be connected with lever 9, the section of depression bar body 7 is in convex shape, and the head of depression bar body 7 is stretched from the end of liquid return valve jacket 8
Go out, the inside of depression bar body 7 is provided with to be inserted since being faced the end face of valve element axially towards the endoporus internally extended, valve pad 4
In the endoporus of depression bar body 7 and it is fixed on depression bar body 7.Neck 704 is the one end on the length direction of depression bar body 7
Periphery on along the annular groove entirely circumferentially extended, the end of depression bar body 7 is extend out to outside liquid return valve jacket 8 one
End, the other end and the outer end of depression bar body 7 that valve pad 4 is fixedly mounted on the length direction of depression bar body 7 are located at back liquid
The inside of valve pocket 8.Valve element and valve pad 4 to be oppositely arranged, valve pad 4 positioned at depression bar body 7 and valve element between, valve element have for
The primary sealing area 504 that valve pad 4 contacts, primary sealing area 504 are the plane with the axis perpendicular of valve element, valve element and valve pad 4
Between forming face contact sealing.Primary sealing area 504 is the end face of the end of valve element, and the end of valve element is apart from depression bar assembly
Nearest one end, valve pad 4 have the first mating surface 401 for being used for being in contact with primary sealing area 504, first mating surface 401
For the end face of the end of valve pad 4, the end of valve pad 4 is one end nearest apart from valve element, the first mating surface 401 and the first sealing
Face 504 is parallel.Valve pad 4 is to realize the control opened to reversal valve by carrying out plane contact with valve element, using flat seal
Form, good sealing effect, sealing reliability are high so that liquid will not flow to main hole for back flow through main inlet opening 14 after reversal valve is opened
15。
As shown in Fig. 1, Fig. 3, Fig. 4, Fig. 9 to Figure 12, depression bar assembly also includes valve pad 4 being fixed on depression bar body 7
Screw 18, screw 18 and depression bar body 7 is be threadedly coupleds, and valve pad 4 is with allowing the avoid holes 405 that screw 18 passes through.Avoid holes 405
For the through hole at the center of valve pad 4 axially through setting, valve pad 4 is cirque structure, valve pad 4 and depression bar body 7 and spiral shell
Nail 18 is to be coaxially disposed, and the outer surface of screw 18 is provided with external screw thread, and the inside of depression bar body 7 is interior provided with allowing screw 18 to be screwed into
Screwed hole 705.Screw 18 is engaged with depression bar body 7, pinch seal pad, realizes being fixedly connected for sealing gasket and depression bar body 7.
Screw 18 is arranged to be threadedly coupled with depression bar body 7, facilitates the dismounting of depression bar assembly, in order to be changed to valve pad 4, valve pad
4 material is preferably polyformaldehyde.
As shown in Figure 9 and Figure 10, depression bar body 7 is one end open, the other end is closed and the cylinder of inner hollow, depression bar
Body 7 has an accommodating hole 701 and the 3rd oil duct 702 connected with accommodating hole 701 for being used to accommodate valve pad 4, houses
Hole 701 is connected to form the endoporus of depression bar body 7 with the oil duct 702 of internal thread hole 705 and the 3rd, and accommodating hole 701 is in depression bar body 7
The end face for facing valve element on formed opening, the end of corresponding depression bar body 7 is openend.In the axial direction of depression bar body 7,
Internal thread hole 705 is located between the oil duct 702 of accommodating hole 701 and the 3rd, and the blind end of depression bar body 7 is in contact with briquetting 1
End.As preferable, accommodating hole 701 and the 3rd oil duct 702 circular port that to be diameter consistent, accommodating hole 701 it is straight
Footpath is more than the diameter of the 3rd oil duct 702 and internal thread hole 705.The side wall of depression bar body 7 is provided with to be connected with the endoporus of depression bar body 7
Logical returns liquid balance damping hole 703, returns liquid balance damping hole 703 to lead in the side wall of depression bar body 7 through the circle set
Hole, return liquid balance damping make depression bar body 7 endoporus connect with counter balance pocket (counter balance pocket be liquid return valve jacket 8 inner chamber in be in press
Cavity portion between bar body 7 and liquid return valve jacket 8) so that liquid can pass through back liquid balance damping hole 703 and depression bar body
7 endoporus disengaging counter balance pocket.The design of liquid balance damping hole 703 is returned, can be put down in time when depression bar assembly moves back and forth
The pressure that weighs and passage function, contacted to form sealing by operating mechanism effect movement and valve element to the left on the right side of depression bar assembly
Afterwards, valve element moves to right separates with valve seat 6, and highly pressurised liquid enters from main inlet opening, and highly pressurised liquid can be full of bore passages, and right side enters
Depression bar body 7 and the space section of liquid return valve jacket 8, so as to reduce the pressure that the right side of depression bar body 7 applies, left side enters service pipe
Complete feed flow；Further, since being provided with two O-ring seals between depression bar body 7 and liquid return valve jacket 8, liquid balance damping hole is returned
703 between two O-ring seals.Under external force, if being not provided with back liquid balance damping, depression bar body 7 is due to true
Empty principle is difficult to move to right, even if imposing severe pressure, there is also negative pressure condition in mobile space so that depression bar assembly blocks mistake
Effect.
As shown in Figures 9 to 11, valve pad 4 includes the first seal section 402, the guide section 403 and the set gradually vertically
Two seal sections 404, the inside of the seal section 404 of guide section 403 and second insertion depression bar body 7, the first seal section 402 are located at depression bar
The outside of body 7 and the first seal section 402 are used to contact with valve element to realize sealing.First seal section 402, the and of guide section 403
Second seal section 404 is annular, and the first seal section 402, the seal section 404 of guide section 403 and second house to be coaxially disposed
Hole 701 is the circular hole set at the inside center of depression bar body 7, and the seal section 404 of guide section 403 and second inserts accommodating hole
In 701, the overall diameter of guide section 403 is identical with the diameter of accommodating hole 701, and the overall diameter of the first seal section 402, which is more than, leads
To the overall diameter of section 403, the overall diameter of guide section 403 is more than the overall diameter of the second seal section 404, the second seal section 404 it is outer
Diameter is more than the diameter of internal thread hole 705.Sealing ring is provided between valve pad 4 and depression bar body 7, the sealing ring is O-ring, and this is close
Seal is sheathed on the second seal section 404 of valve pad 4 and the sealing ring is clipped between valve pad 4 and depression bar body 7, ensures that
Sealing property between valve pad 4 and depression bar body 7, liquid leakage is avoided, improve sealing reliability.First seal section 402 is located at
Between depression bar body 7 and valve element, the end face of upper two opposed ends in axial direction of the first seal section 402 is plane, and first coordinates
Face 401 is one end end face of the first seal section 402, the end face of the other end of the first seal section 402 and the openend of depression bar body 7
End face fitting, the first mating surface 401 is parallel with the axis of valve element.First mating surface 401 and primary sealing area 504 are coaxial
Set, the diameter of the first mating surface 401 is more than the diameter of primary sealing area 504, so that primary sealing area 504 is matched somebody with somebody with first
Conjunction face 401 can be bonded completely, it is ensured that sealing reliability.Further, since crossing liquid mode using face structure, valve pad 4 is only by valve
The end contact effect of core, the impact that valve pad 4 is born is small, service life length.
As shown in Fig. 9 to Figure 12, avoid holes 405 are the stepped hole set at the inside center of valve pad 4, and screw 18 inserts
In avoid holes 405.Screw 18, which has, allows the 4th oil duct 19 that liquid passes through, and the 4th oil duct 19 is along axle at the center of screw 18
To the through hole through setting, the 4th oil duct 19 is connected with the 3rd oil duct 702 and the 4th oil duct 19 is coaxially set with the 3rd oil duct 702
Put, the diameter of the 4th oil duct 19 is less than the diameter of the 3rd oil duct 702.
As shown in Fig. 1, Fig. 3, Fig. 4, Fig. 5 and Fig. 7, valve seat 6 is sheathed on valve element and valve seat 6 is by feed liquor valve pocket 3 and time liquid
Valve pocket 8 is fixedly clamped, and valve element has secondary sealing area 505 and the secondary sealing area 505 is circular conical surface, valve seat 6 have be used for
The secondary sealing area 505 is in contact to realize the second mating surface 601 of sealing, and the second mating surface 601 is circular conical surface, and valve element has
The lateral surface of sealing 503 and the sealing 503 is provided with secondary sealing area 505, and sealing 503 is the side wall for being arranged at valve element
A upper and outstanding complete loop configuration, sealing 503 are that coaxial and sealing 503 is located at liquid feed valve with valve seat 6
In the inner chamber of set 3.In the axial direction of valve element, sealing 503 be located in the side wall of spring 17 and valve element set liquid pass hole 506 it
Between, spring 17 is sheathed on valve element and the spring 17 and in the feed liquor valve pocket 3, the sealing 503 that one end of spring 17 is against
End face on, the other end be against in feed liquor valve pocket 3 on the step surface set at the terminal position.Core assembly exists
During original state, spring 17 promotes valve element to be moved towards depression bar assembly, until sealing 503 and the second mating surface on valve seat 6
Sealing is realized in 601 contacts.In addition, O-ring seal, valve are respectively arranged between the both ends of valve element and feed liquor valve pocket 3 and guide pin bushing 9
Set liquid pass hole 506 and sealing 503 are located between the O-ring seal at both ends in the side wall of core, it is ensured that the sealing of admission chamber.
In the axial direction of valve element, liquid pass hole 506 is between sealing 503 and primary sealing area 504, and core assembly is in original state
When, liquid pass hole 506 and inlet opening 301 are respectively positioned at the side of sealing 503.The position of hole for back flow 801 on liquid return valve jacket 8 is leaned on
The end of nearly liquid return valve jacket 8, hole for back flow 801 connect with the back to the fluid chamber of the inside of liquid return valve jacket 8.
Under original state as shown in figures 1 and 3, valve is closed, and is sealed between valve element and valve seat 6, feed liquor valve pocket 3
Do not connected between inlet opening 301 and the liquid pass hole 506 on valve element, oil circuit is obstructed；When needing Open valve, direction needs liquid
Handle 12 is pulled in the working hole direction of body outflow, and depression bar assembly promotes valve element to move in the presence of briquetting 1, the sealing of valve element
503 separate with valve seat 6, and the inlet opening 301 of feed liquor valve pocket 3 connects with the liquid pass hole 506 on valve element, and liquid can enter in valve element
The oil duct in portion, due to now being sealed between valve element and the valve pad 4 of depression bar assembly, into the liquid can in valve core inside oil duct
Flow into the working hole A or working hole B of valve body.Behind the door, sealing 503 contacts shutoff valve with valve seat 6, and valve element separates with valve pad 4,
The liquid gone out in sap cavity of liquid return valve jacket 8 is by hole for back flow 801, the flow back fluid pumping plant of main hole for back flow 15 of valve body.
As shown in Fig. 1, Fig. 3, Fig. 4, Fig. 5 and Fig. 7, valve seat 6 is the cylinder of both ends open and inner hollow, on valve element
With the second mating surface 601 to be coaxially disposed, the second mating surface 601 is valve seat 6 for secondary sealing area 505 and primary sealing area 504
A part for internal face, the second mating surface 601 are circular conical surface, and the second mating surface 601 has a bigger diameter end and a miner diameter end,
The diameter of the bigger diameter end of second mating surface 601 is more than the diameter of miner diameter end, the bigger diameter end of the second mating surface 601 and valve seat 6 with
The end face connection of the first confined planes 302 fitting on feed liquor valve pocket 3, the miner diameter end of the second mating surface 601 and the inner headed face of valve seat 6
Connection.Valve seat 6 is that the material of valve seat 6 is preferably polyformaldehyde using cirque structure made of softwood matter.The valve seat 6 of softwood matter
Realization sealing is engaged with valve element, enhances the sealing property of reversal valve.And coordinate without guide pin bushing 9 and valve element and realize sealing,
The sealing surface being engaged so on guide pin bushing 9 without processing with valve element, so as to simplify structure and the processing of valve seat 6 and guide pin bushing 9
Technique, long-term use only need to change the valve seat 6 of softwood matter, reduce cost, adapt to low pressure seal after causing seal failure
It is required that and sealing reliability it is higher.
As shown in Fig. 3, Fig. 5 and Fig. 7, feed liquor valve pocket 3 is both ends open and the cylinder of inner hollow, feed liquor valve pocket 3 have
Have the first confined planes 302 for being bonded with valve seat 6 and with 302 inner headed face connected vertically of the first confined planes, inner headed face is the face of cylinder
And liquid passage, the diameter of inner headed face excessively for allowing liquid to pass through are formed between the inner headed face and secondary sealing area 505 and is matched somebody with somebody more than second
The diameter of the bigger diameter end in conjunction face 601.Inner headed face and the first confined planes 302 for the internal face of feed liquor valve pocket 3 a part, in feed liquor
In the axial direction of valve pocket 3, inlet opening 301, inner headed face and the first confined planes 302 are to set gradually.Inlet opening 301 is in feed liquor valve pocket
Through the through hole set in 3 side wall, inlet opening 301 is to be obliquely installed on feed liquor valve pocket 3, and the axis of inlet opening 301 is with entering
There is angle between the axis of liquid valve pocket 3 and the angle is acute angle.The circular hole of inlet opening 301, inlet opening 301 is in feed liquor valve pocket 3
It is evenly distributed multiple in side wall, inlet opening 301 is connected with the hollow cavity of feed liquor valve pocket 3 and all inlet openings 301 are distributed in
Around hollow cavity.Inlet opening 301 is to tilt to extend towards the position of valve seat 6 in the side wall of feed liquor valve pocket 3, inlet opening
301 axis intersects with the axis of feed liquor valve pocket 3 and angle between the two is less than 90 degree.Inlet opening 301 is designed using inclined hole,
So that liquid is more smooth by being flowed during inlet opening 301, drag losses is smaller, and is easier to process.
As shown in figures 3 and 8, liquid return valve jacket 8 is the cylinder of both ends open and inner hollow, one end of feed liquor valve pocket 3
The end for inserting the inside of liquid return valve jacket 8 and the end and the liquid return valve jacket 8 of feed liquor valve pocket 3 is to be threadedly coupled.Liquid return valve jacket 8 has
The second confined planes 802 being bonded with the end face of guide pin bushing 9, the second confined planes 802 are a part for the internal face of liquid return valve jacket 8,
In the axial direction of liquid return valve jacket 8, end, the second confined planes 802 and hole for back flow 801 that liquid return valve jacket 8 is connected with feed liquor valve pocket 3 be according to
Secondary setting.Second confined planes 802 are the axis perpendicular of annular plane, the second confined planes 802 and liquid return valve jacket 8.
As shown in Figure 3 and Figure 4, there is the hollow oil duct axially through setting, the hollow oil at the inside center of valve element
Road includes the first oil duct 501 and the second oil duct 502 for being connected and setting gradually vertically, and the diameter of the first oil duct 501 is more than
The diameter of second oil duct 502 and the first oil duct 501 are located between working hole set on the second oil duct 502 and valve body end face, the
Two oil ducts 502 are located between the oil duct 501 of depression bar body 7 and first.First oil duct 501 and the second oil duct 502 are to be coaxially disposed, and
And second oil duct 502 length be less than the first oil duct 501 length.It is big by one by the way that the hollow oil duct in valve element is arranged to
First oil duct 501 of diameter and the second oil duct 502 of a minor diameter form, when highly pressurised liquid enters between valve element and valve seat 6
When, liquid can be timely conveyed, and buffering area is formed when working hole returns liquid, so as to preferably ensure the laminar flow of liquid.Valve element
Cylindrical side wall be provided with and allow the liquid pass hole 506 that liquid passes through, liquid pass hole 506 forms the second oil duct for the encirclement on valve element
It is circumferentially through the manhole set, the liquid pass hole 506 in 502 annular side wall and in the annular side wall of valve element
It is uniformly arranged multiple, liquid pass hole 506 is connected with the second oil duct 502 and both axis perpendiculars.Core assembly in original state,
Liquid pass hole 506 aligns with valve seat 6 and closed by valve seat 6 and corresponding seal.In the axial direction of valve element, sealing 503 is located at
Between first oil duct 501 and liquid pass hole 506, sealing 503 has a miner diameter end and a bigger diameter end, sealing 503 it is big
The diameter at footpath end is more than the diameter of miner diameter end, and the miner diameter end of sealing 503 is less than close to the diameter of liquid pass hole 506 and the miner diameter end
The diameter of second mating surface 601, the bigger diameter end of sealing 503 are located at the inside of feed liquor valve pocket 3.
As shown in figures 1 and 3, with valve body to be threadedly coupled, core assembly integrally inserts in the valve pocket of valve body liquid return valve jacket 8
And by the threaded connection of liquid return valve jacket 8 and valve body, realize fixation of the core assembly on valve body.Valve pocket is in one end of valve body
End face starts to extend to the circular cavity of the other end of valve body, and core assembly is inserted in valve pocket and with valve body to be threadedly coupled,
Core assembly is arranged to be threadedly coupled with valve body, easy disassembly and maintenance.Sealing ring is provided between liquid return valve jacket 8 and valve body, is entered
Sealing ring is provided between liquid valve pocket 3 and valve body.
As shown in Figures 3 to 6, guide pin bushing 9 is sheathed on valve element and for providing guide effect to valve element, guide pin bushing 9 is annulus
Shape structure, valve seat 6 is sheathed on guide pin bushing 9 and valve seat 6 and guide pin bushing 9 is are coaxially disposed, guide pin bushing 9 be clipped in valve seat 6 and liquid return valve jacket 8 it
Between, valve seat 6 and guide pin bushing 9 are clipped between feed liquor valve pocket 3 and liquid return valve jacket 8.Guide pin bushing 9 is by spacing section 903 and 902 groups of section of support
Into, spacing section 903 with support section 902 to be connected and spacing section 903 and support section 902 to be vertically sequentially arranged, spacing section 903
Overall diameter be more than support section 902 overall diameter, support section 902 with spacing section 903 be coaxially disposed, valve seat 6 is sheathed on support
In section 902, support section 902 to insert in the centre bore of valve seat 6, support the length of section 902 to be less than the depth of the centre bore of valve seat 6,
Second mating surface 601 of valve seat 6 supports section 902 and valve element between support section 902 and the inlet opening 301 of feed liquor valve pocket 3
There is gap between sealing 503, support that valve seat uses softwood matter system to section 902 between spacing section 903 and sealing 503
Into, yielding, valve seat 6 can be extruded by valve element, support section 902 diametrically can be provided a supporting role to valve seat 6 so that
Valve seat 6 is only partly to deform when sealing is realized in valve element contact, avoids the excessive deformation of valve seat 6 and influences sealing effectiveness and open
Liquid effect is crossed after opening.Guide pin bushing 9 is located at the inside of feed liquor valve pocket 3, and in the axial direction, spacing section of 903 pairs of valve seats 6 play spacing work
With spacing section 903 is engaged clamping valve seat 6 with feed liquor valve pocket 3.Guide pin bushing 9 is made of metal material, spacing section 903 and support
Section 902 is integrated machine-shaping.
As shown in Figures 3 to 6, valve element, which has, allows the liquid pass hole 506 that liquid passes through, and guide pin bushing 9 has outside liquid pass hole 506
Side and for guide liquid to the drainage face 901 in liquid pass hole 506, drainage face 901 to be circular conical surface.Core assembly is in initial shape
During state, valve seat 6 contacts with valve element, and liquid pass hole 506 aligns with drainage face 901, and drainage face 901 surrounds all liquid pass holes 506.Changing
When being opened to valve, valve element separates with valve seat 6, and drainage face 901 guides liquid into liquid pass hole 506, not only to liquid have compared with
Good water conservancy diversion effect, and liquid can be reduced to hydraulic shock caused by valve element and the grade part of guide pin bushing 9, improve the steady of reversal valve
Qualitative and reliability, and then the overall stability of hydraulic system is improved a lot.Drainage face 901 is the internal face of guide pin bushing 9
A part, drainage face 901 are circular conical surface, and drainage face 901 has a bigger diameter end and a miner diameter end, drains the big footpath in face 901
The diameter at end is more than the diameter of miner diameter end, and the bigger diameter end in drainage face 901 is connected with the end face 904 of guide pin bushing 9, the end face of guide pin bushing 9
904 be the end face of one end for facing sealing 503 of guide pin bushing 9, and the miner diameter end in drainage face 901 connects with the spigot surface 905 of guide pin bushing 9
Connect, spigot surface 905 is the face of cylinder, and spigot surface 905 is also a part for the internal face of guide pin bushing 9, the diameter of spigot surface 905 and drainage
The diameter of the miner diameter end in face 901 is identical, and spigot surface 905 is bonded with the periphery of valve element, spigot surface 905 and drainage face 901
In the inside of guide pin bushing 9 vertically to set gradually, the one end open of guide pin bushing 9 of formation is big, one end open is small, and the opening of guide pin bushing 9 is big
One end towards sealing 503.Vertical range between the bigger diameter end in drainage face 901 and the axis of valve element is more than miner diameter end and valve
Vertical range between the axis of core, drain face 901 bigger diameter end and sealing 503 between vertical range be less than miner diameter end with
Vertical range between sealing 503.The end face 904 of guide pin bushing 9 is annular plane, drains bigger diameter end and the end face 904 in face 901
Inward flange connection, the diameter of bigger diameter end is identical with the interior diameter size of end face 904, in the overall diameter of end face 904 and valve seat 6
The diameter in heart hole is identical.
The size of the high flow directional control valve of the present invention is 390*122*48mm, nominal flow rate 400L/min, nominal pressure
For 31.5MPa.
Two work cavity configurations of the high flow directional control valve of the present invention are identical, and its operation principle is as follows：At operating mechanism
When centre position, the interface towards each working chamber communicates with back to the fluid chamber.Valve element seals in the presence of spring 17 with valve seat 6,
Prevent high-voltage oil liquid from entering.When needing work, operating mechanism depresses the depression bar assembly of side, valve pad 4 contacted with valve element with
Forming sealing pair prevents high-voltage oil liquid from flowing to back to the fluid chamber, while valve element and valve seat 6 are separated, and the liquid in high pressure chest is entered work
Make chamber interface column or very heavy carry out relevant action, by being open by force, lever 9 pulls out the depression bar assembly of another working chamber,
Make back liquid more smooth.When needing stopping to act, operating mechanism recovers zero-bit, and lever 9 recovers horizontal and to pull out depression bar total
Into valve pad 4 separates with valve element, opens working chamber and back flow channel, and make working chamber liquid smoothness returns to back liquid by back to the fluid chamber
On main pipeline.Valve element compresses to valve seat 6 in the presence of the elastic force and fluid pressure of spring 17 and closes feed liquor simultaneously, stops opposition
Post or very heavy carry out relevant action.The operation principle of corresponding opposite side is identical.
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. soft seal high flow directional control valve, including liquid return valve jacket, valve seat, feed liquor valve pocket, valve element and operating mechanism, its feature exist
In：Also include the depression bar assembly for being movably arranged in the liquid return valve jacket and being engaged with the operating mechanism, depression bar is total
Into including depression bar body and being arranged on depression bar body and realize the valve pad of sealing, valve pad use for contact with the valve element
Softwood matter is made.
2. soft seal high flow directional control valve according to claim 1, it is characterised in that：The valve element have be used for it is described
The primary sealing area of valve pad contact, primary sealing area are the plane with the axis perpendicular of valve element, are formed between valve element and valve pad
Face contact sealing.
3. soft seal high flow directional control valve according to claim 2, it is characterised in that：The primary sealing area is the valve
The end face of the end of core, the valve pad have the first mating surface for being used for being in contact with primary sealing area, and first mating surface is
The end face of the end of valve pad, the first mating surface are parallel with primary sealing area.
4. soft seal high flow directional control valve according to any one of claims 1 to 3, it is characterised in that：The depression bar assembly is also
Including the screw being fixed on the valve pad on the depression bar body, with depression bar body to be threadedly coupled, valve pad has to be allowed screw
The avoid holes that screw passes through.
5. soft seal high flow directional control valve according to claim 4, it is characterised in that：The valve pad and the depression bar body
Between be provided with sealing ring.
6. soft seal high flow directional control valve according to any one of claims 1 to 5, it is characterised in that：The valve pad includes edge
The first seal section, guide section and the second seal section axially set gradually, guide section and the second seal section insert the depression bar sheet
The inside of body, the first seal section is located at the outside of depression bar body and the first seal section is close to realize for being contacted with the valve element
Envelope.
7. soft seal high flow directional control valve according to claim 6, it is characterised in that：The overall diameter of first seal section
More than the overall diameter of the guide section, the overall diameter of guide section is more than the overall diameter of second seal section.
8. soft seal high flow directional control valve according to any one of claims 1 to 7, it is characterised in that：The valve seat is sheathed on
On the valve element and valve seat is fixedly clamped by the feed liquor valve pocket and the liquid return valve jacket, valve element have secondary sealing area and this
Two sealing surfaces are circular conical surface, and valve seat, which has, to be used to contact with secondary sealing area to realize the second mating surface of sealing, and valve seat uses
Softwood matter is made.
9. soft seal high flow directional control valve according to claim 8, it is characterised in that：Also include being sheathed on the valve element
And the guide pin bushing of guide effect is provided valve element, the valve seat is sheathed on guide pin bushing.
10. soft seal high flow directional control valve according to claim 9, it is characterised in that：The valve element, which has, allows liquid to lead to
The liquid pass hole crossed, the guide pin bushing have on the outside of liquid pass hole and for liquid to be guided to the drainage face in liquid pass hole, drainage
Face is circular conical surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711159065.0A CN107725081A (en) | 2017-11-20 | 2017-11-20 | Soft seal high flow directional control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711159065.0A CN107725081A (en) | 2017-11-20 | 2017-11-20 | Soft seal high flow directional control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107725081A true CN107725081A (en) | 2018-02-23 |
Family
ID=61216424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711159065.0A Withdrawn CN107725081A (en) | 2017-11-20 | 2017-11-20 | Soft seal high flow directional control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107725081A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4757835A (en) * | 1985-11-15 | 1988-07-19 | Hermann Hemscheidt Maschinenfabrik Gmbh & Co. | Change-over valve for hydraulic walking mine-roof supports |
| CN2601321Y (en) * | 2003-03-12 | 2004-01-28 | 北京威力清矿山控制技术有限公司 | Manually operated valve |
| CN201025044Y (en) * | 2007-04-08 | 2008-02-20 | 李竹洋 | A conversion valve with operation pressure 31.5MPa |
| CN201521308U (en) * | 2009-10-22 | 2010-07-07 | 郑州煤机液压电控有限公司 | High flow capacity insertion type manual direction-changing valve for hydraulic supporting frame |
| CN202165100U (en) * | 2011-08-22 | 2012-03-14 | 华煤发展科技有限公司 | Three-position four-way reversing valve for coal mine hydraulic bracket |
| CN103510970A (en) * | 2013-09-27 | 2014-01-15 | 巨隆集团芜湖兴隆液压有限公司 | Valve element assembly of reversing valve for fully-mechanized coal mining hydraulic support |
| CN203702193U (en) * | 2013-09-05 | 2014-07-09 | 丰隆液压有限公司 | Integral spring reset inserting type manual reversing valve |
-
2017
- 2017-11-20 CN CN201711159065.0A patent/CN107725081A/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4757835A (en) * | 1985-11-15 | 1988-07-19 | Hermann Hemscheidt Maschinenfabrik Gmbh & Co. | Change-over valve for hydraulic walking mine-roof supports |
| CN2601321Y (en) * | 2003-03-12 | 2004-01-28 | 北京威力清矿山控制技术有限公司 | Manually operated valve |
| CN201025044Y (en) * | 2007-04-08 | 2008-02-20 | 李竹洋 | A conversion valve with operation pressure 31.5MPa |
| CN201521308U (en) * | 2009-10-22 | 2010-07-07 | 郑州煤机液压电控有限公司 | High flow capacity insertion type manual direction-changing valve for hydraulic supporting frame |
| CN202165100U (en) * | 2011-08-22 | 2012-03-14 | 华煤发展科技有限公司 | Three-position four-way reversing valve for coal mine hydraulic bracket |
| CN203702193U (en) * | 2013-09-05 | 2014-07-09 | 丰隆液压有限公司 | Integral spring reset inserting type manual reversing valve |
| CN103510970A (en) * | 2013-09-27 | 2014-01-15 | 巨隆集团芜湖兴隆液压有限公司 | Valve element assembly of reversing valve for fully-mechanized coal mining hydraulic support |
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Application publication date: 20180223 |
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