CN107489789A - Hard sealing low discharge reversal valve - Google Patents
Hard sealing low discharge reversal valve Download PDFInfo
- Publication number
- CN107489789A CN107489789A CN201710874363.1A CN201710874363A CN107489789A CN 107489789 A CN107489789 A CN 107489789A CN 201710874363 A CN201710874363 A CN 201710874363A CN 107489789 A CN107489789 A CN 107489789A
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- Prior art keywords
- valve
- valve pocket
- pad
- low discharge
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- 238000007789 sealing Methods 0.000 title claims abstract description 60
- 239000007788 liquid Substances 0.000 claims abstract description 70
- 239000007769 metal material Substances 0.000 claims abstract description 8
- 230000000712 assembly Effects 0.000 claims abstract description 4
- 238000000429 assembly Methods 0.000 claims abstract description 4
- 230000007246 mechanism Effects 0.000 claims description 25
- 239000000463 material Substances 0.000 claims description 5
- 238000005516 engineering process Methods 0.000 abstract description 7
- 238000012545 processing Methods 0.000 abstract description 7
- 230000008859 change Effects 0.000 abstract description 4
- 230000007774 longterm Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 4
- 238000009434 installation Methods 0.000 abstract description 2
- 239000012530 fluid Substances 0.000 description 15
- 239000000839 emulsion Substances 0.000 description 9
- 238000013016 damping Methods 0.000 description 7
- 238000013461 design Methods 0.000 description 4
- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- 239000003245 coal Substances 0.000 description 3
- 238000011900 installation process Methods 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 229920006311 Urethane elastomer Polymers 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 239000011122 softwood Substances 0.000 description 1
- 230000005066 stomata function Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/10—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit
- F16K11/14—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit operated by one actuating member, e.g. a handle
- F16K11/16—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit operated by one actuating member, e.g. a handle which only slides, or only turns, or only swings in one plane
- F16K11/168—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit operated by one actuating member, e.g. a handle which only slides, or only turns, or only swings in one plane only swings
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/42—Valve seats
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0263—Construction of housing; Use of materials therefor of lift valves multiple way valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/52—Mechanical actuating means with crank, eccentric, or cam
- F16K31/524—Mechanical actuating means with crank, eccentric, or cam with a cam
- F16K31/52408—Mechanical actuating means with crank, eccentric, or cam with a cam comprising a lift valve
- F16K31/52416—Mechanical actuating means with crank, eccentric, or cam with a cam comprising a lift valve comprising a multiple-way lift valve
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Lift Valve (AREA)
Abstract
The invention discloses a kind of hard sealing low discharge reversal valve, including valve body and two core assemblies, core assembly includes depression bar, liquid return valve jacket, feed liquor valve pocket, middle valve pocket and valve element, the core assembly also includes the valve pad being clipped between the feed liquor valve pocket and the middle valve pocket, valve pad is sheathed on the valve element and realization sealing is engaged with valve element, and valve pad and valve element are made of metal material.The hard sealing low discharge reversal valve of the present invention, by setting valve pad to be clipped between feed liquor valve pocket and middle valve pocket so that core assembly can form the plug-in structure of an entirety, and integrated level is high, the convenient installation and removal in the valve body of reversal valve；It is engaged simultaneously using the valve pad of metal material with valve element, coordinate without middle valve pocket with valve element and realize sealing, middle valve pocket need not process sealing surface, so as to simplify the structure and processing technology of middle valve pocket, long-term use only needs to change valve pad after causing seal failure, cost is reduced, and sealing reliability 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 hard sealing low discharge 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, low discharge reversal 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 respectively provided at valve
On two other relative side of body.Core assembly includes depression bar, liquid return valve jacket, feed liquor valve pocket, middle valve pocket and valve element, valve
The both ends open of core, inside are hollow oil duct.It is to seal firmly between middle valve pocket and valve element, therefore need to be processed on intermediate valve set
Sealing surface, middle housing configuration is complicated, and processing technology is complicated, not easy processing, and sealing reliability is poor, and long-term use cause it is close
After envelope failure, middle valve pocket need to be changed, cost is high.
In addition, the both ends of the middle valve pocket of existing low discharge reversal valve are respectively screw thread with feed liquor valve pocket and liquid return valve jacket
Connection, although this connected mode can improve the integrated level of core assembly, because core assembly is in insertion valve body progress
The sealing ring and valve body inner bore that can be arranged in installation process due to outside are extruded and to form larger frictional resistance, this frictional resistance
Liquid return valve jacket and middle valve pocket can be caused to be outwarded winding, thereby using when may produce fluid leakage, can influence core assembly makes
The reliability of used time.
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 firmly
Seal low discharge reversal valve, it is therefore an objective to valve pocket processing technology among simplifying, reduce cost.
To achieve these goals, the technical scheme taken of the present invention is：Hard sealing low discharge reversal valve, including valve body and
Two core assemblies, core assembly include depression bar, liquid return valve jacket, feed liquor valve pocket, middle valve pocket and valve element, and the core assembly is also
Including the valve pad being clipped between the feed liquor valve pocket and the middle valve pocket, valve pad is sheathed on the valve element and matched with valve element
Close and realize sealing, valve pad and valve element are made of metal material.
The valve element is identical with the material of the valve pad, and the hardness of valve pad is less than the hardness of valve element.
One end of the middle valve pocket is connected with the feed liquor valve pocket, and the other end of middle valve pocket passes through lockable mechanism and institute
Liquid return valve jacket connection is stated, lockable mechanism is arranged to prevent middle valve pocket from occurring to relatively move vertically with liquid return valve jacket and can made
Middle valve pocket can relatively rotate with liquid return valve jacket.
For the intermediate valve set with the storage tank for accommodating the lockable mechanism, the liquid return valve jacket, which has, makes lockable mechanism embedding
The lock groove entered.
The storage tank is multiple to be circumferentially uniformly arranged in the side wall of the middle valve pocket, and the lock groove is in institute
State on the periphery of liquid return valve jacket along the annular groove entirely circumferentially extended, a locking machine is set respectively in each storage tank
Structure.
The lockable mechanism includes the embedded lock groove and lock piece in the storage tank and lock piece is applied
Pressure is so that the compressing member of its fixation.
The lock piece is spherical, and the cross section of the lock groove is semicircle.
It with the middle valve pocket is the screw that is threadedly coupled that the compressing member, which is,.
The hard sealing low discharge reversal valve of the present invention, by setting valve pad to be clipped between feed liquor valve pocket and middle valve pocket, makes
Core assembly can form the plug-in structure of an entirety, integrated level is high, convenient installation in the valve body of reversal valve and
Dismounting；It is engaged simultaneously using the valve pad of metal material with valve element, coordinates without middle valve pocket and valve element and realize sealing, intermediate valve
Set need not process sealing surface, so as to simplify the structure and processing technology of middle valve pocket, after long-term use causes seal failure
Only need to change valve pad, reduce cost, and sealing reliability is high, service life length；In addition, by setting lockable mechanism to fix
Valve pocket and liquid return valve jacket among connection, in core assembly in insertion valve body carries out installation process, it can avoid because outside is arranged
Sealing ring and valve body inner bore extruding caused by frictional resistance and caused by occur what is loosened between liquid return valve jacket and middle valve pocket
Situation occurs, so as to improve the reliability of liquid return valve jacket and the connection of middle valve pocket.
Brief description of the drawings
This specification includes the following drawings, and shown content is respectively：
Fig. 1 is the sectional view of low discharge reversal valve of the present invention；
Fig. 2 is the front view of low discharge reversal 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 feed liquor valve pocket；
Fig. 6 is the sectional view of middle valve pocket；
Fig. 7 is the sectional view of liquid return valve jacket；
Fig. 8 is the sectional view of depression bar；
Fig. 9 is the sectional view of valve pad；
Mark in above-mentioned figure is：1st, depression bar；2nd, liquid return valve jacket；3rd, middle valve pocket；4th, feed liquor valve pocket；5th, valve element；6、
Spring；7th, the first fluid hole；8th, the second fluid hole；9th, inlet opening；10th, hole for back flow；11st, valve pad；12nd, sealing；13rd, handle；
14th, pressure head；15th, briquetting；16th, valve body；17th, feed liquor sealing；18th, housing；19th, middle seal；20th, main inlet opening；21st, it is main
Hole for back flow；
22nd, lock groove；23rd, storage tank；24th, lock piece；25th, compressing member；26th, liquid balance damping hole is returned；27th, circular port；
28th, bellmouth.
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 Figures 1 to 9, the invention provides a kind of hard sealing low discharge reversal valve, including valve body 16, housing 18,
Handle 13,14, two briquettings 15 of pressure head and two core assemblies.Valve body 16 is rectangular block shape structure, and valve body 16 is provided with one
Main 20, main hole for back flow 21 of inlet opening and two working holes C, D, main inlet opening 20 and main hole for back flow 21 are located at valve body 16 side by side
Same side on, two working holes C, D are respectively provided on two other relative side of valve body 16, two working hole C,
D is engaged with a core assembly respectively, two working holes C, D axis and the axis perpendicular of core assembly.In valve
After unlatching, flowed out respectively from working hole C, D from the emulsion that main inlet opening 20 enters in valve body 16 by core assembly, valve closes
After closing, the emulsion in core assembly flows back to emulsion power pack from main hole for back flow 21.
Specifically, as shown in figure 3, core assembly includes depression bar 1, liquid return valve jacket 2, middle valve pocket 3, valve pad 11, feed liquor
Valve pocket 4 and valve element 5.Liquid return valve jacket 2 is enclosed on depression bar 1, the inside of liquid return valve jacket 2 is provided with match with the outer shape of depression bar 1 in
Hole, the section of depression bar 1 are in convex shape, and the head of depression bar 1 is stretched out from the end of liquid return valve jacket 2, and the inside of depression bar 1 is provided with from facing
Start to axially extend the endoporus to be formed on the end face of valve element 5.The main body of valve element 5 is cylinder, the both ends open of valve element 5, interior
Portion is the hollow oil duct axially extended, and valve element 5 is engaged with depression bar 1 can realize sealing.One end of middle valve pocket 3 is with returning liquid
Valve pocket 2 is threaded connection, and the other end of middle valve pocket 3 is fixedly connected by lockable mechanism with feed liquor valve pocket 4, the middle He of valve pocket 3
Feed liquor valve pocket 4 is all enclosed on valve element 5, and middle valve pocket 3 and feed liquor valve pocket 4 are all internally provided with an endoporus.Feed liquor valve pocket 4,
Be equipped with the through hole for allowing liquid to flow through run through in the side wall of liquid return valve jacket 2, valve element 5 and middle valve pocket 3, respectively inlet opening 9,
Hole for back flow 10, the first fluid hole 7 and the second fluid hole 8, main inlet opening 20 connect with the inlet opening 9 on feed liquor valve pocket 4, working hole
The second fluid hole 8 on C and the middle valve pocket 3 of upside connects, the second fluid hole 8 on the middle valve pocket 3 of working hole D and downside
Connection, hole for back flow 10 connect with the main hole for back flow 21 on valve body 16.
As shown in figure 3, valve pad 11 is clipped between feed liquor valve pocket 4 and middle valve pocket 3, internal thread is carried on middle valve pocket 3
Openend inside have accommodate valve pad 11 accommodating cavity, valve pad 11 be engaged with valve element 5 realization seal.During valve pad 11 is arranged at
Between valve pocket 3 inside, valve pad 11 is fixedly clamped by middle valve pocket 3 and feed liquor valve pocket 4 in the axial direction.Valve pad 11 is cirque structure
And valve pad 11 has in receiving valve element 5 with middle valve pocket 3 and feed liquor valve pocket 4 to be coaxially disposed, at the inside center of valve pad 11
Heart hole, the diameter of the centre bore of valve pad 11 are less than the largest outer diameter of valve element 5.Valve element 5 uses metal material system with valve pad 11
Into valve element 5 is identical with the material of valve pad 11, and the hardness of valve pad 11 is less than the hardness of valve element 5, and valve element 5 is hard sealing with valve pad 11
Connection, enhances sealing property.Valve element 5 and valve pad 11 are made of metal material, and to use vacuum hardening technology, quench it
Refine again afterwards, hardness is high, hard to seal not only good seal performance, moreover it is possible to resistance to super-pressure relative to the sealing of softwood matter so that commutation
The service life length of valve.And coordinate without middle valve pocket with valve element and realize sealing, such intermediate valve is put without processing and valve
The sealing surface that core is engaged, so as to simplify the structure and processing technology of middle valve pocket, after long-term use causes seal failure
Only need to change valve pad 11, reduce cost, and sealing reliability is higher.
As shown in Fig. 3, Fig. 4 and Fig. 6, the sealing of a protrusion is provided with close to the position at middle part on the lateral wall of valve element 5
Portion 12, the sealing 12 is a complete annular, coaxial with valve element 5.A spring 6, the bullet are also cased with the outside of valve element 5
Spring 6 is simultaneously located in feed liquor valve pocket 4, and one end of spring 6 is against on the end face of sealing 12 of valve element 5, and the other end is against liquid feed valve
On the step surface set at close terminal position in set 4.For core assembly in original state, spring 6 promotes valve element 5
Moved towards depression bar, until contacting realization sealing with valve pad 11.The lateral wall of valve element 5 and respectively with feed liquor valve pocket 4 and intermediate valve
Cover 3 madial walls and protrude above the part come and fit, as illustrated, on the inwall of feed liquor valve pocket 4 for feed liquor sealing 17,
Annular groove is provided with for middle seal 19, feed liquor sealing 17 and middle seal 19 on the middle inwall of valve pocket 3, it is poly- for installing
O-ring made of urethane rubber, realize the sealing between valve element 5.Setting close to end on the inwall of feed liquor valve pocket 4 is convex
The feed liquor sealing 17 gone out, the end of spring 6 are against on the inner face of the feed liquor sealing 17.Along the axial direction of feed liquor valve pocket 4, enter
Fluid apertures 9 is located between feed liquor sealing 17 and the end for being connected with middle valve pocket 3, and feed liquor valve pocket 4 is internally formed one
Admission chamber, inlet opening 9 connect with the admission chamber, and emulsion enters in admission chamber from the inlet opening 9.Along the axial direction of middle valve pocket 3,
Second fluid hole 8 is between middle seal 19 and protuberance 11, and also shape one goes out sap cavity for the inside of middle valve pocket 3, the
Two fluid holes 8 go out sap cavity with this and connected.Along the axial direction of valve element 5, the first fluid hole 7 is located at the direction pressure of sealing 12 and valve element 5
Between the end of bar 1, for core assembly in original state, the first fluid hole 7 is located at the going out in sap cavity of middle valve pocket 3.Return liquid valve
The end for being located proximate to middle valve pocket 3 of hole for back flow 10 on set 2, hole for back flow 10 and the back to the fluid chamber of the inside of liquid return valve jacket 2 connect
It is logical.
Under original state as shown in figures 1 and 3, valve is closed, and is sealed between valve element 5 and valve pad 11, feed liquor valve pocket 4
Admission chamber and the oil duct in valve element 5 between do not connect, oil circuit is obstructed；When needing Open valve, direction needs emulsion
Handle 13 is pulled in the working hole direction of outflow, and depression bar 1 promotes valve element 5 to move in the presence of briquetting 15, the sealing 12 of valve element 5
Separated with valve pad 11, the admission chamber of feed liquor valve pocket 4 connects with the oil duct in valve element 5, and emulsion can enter sap cavity, due to this
When valve element 5 and depression bar 1 between seal, emulsion can in back to the fluid chamber pass through among the second fluid hole on valve pocket 3 flow into
The working hole C or D of valve body 16.Shutoff valve behind the door, goes out the emulsion in sap cavity by the hole for back flow 10 on liquid return valve jacket 2, valve body
16 main hole for back flow 21 flows back to emulsion power pack.
The depression bar 1 of core assembly is also made of metal material, and depression bar 1, middle valve pocket 3 are identical with the material of valve element 5,
For 3Cr13.When depression bar 1 moves towards valve element 5 under external force, when the madial wall of depression bar 1 contacts with the lateral wall of valve element 5
When, it is to be tightly connected firmly between the end of depression bar 1 and valve element 5, as shown in Figure 3 and Figure 4, the end of valve element 5 is frustum structure, should
The taper of the outer conical surface of frustum structure is 60 degree, and the endoporus porch of depression bar 1 processes an arc surface, so as in depression bar 1
Endoporus porch formed a fillet, be linear contact lay between the arc surface and the end male cone (strobilus masculinus) of valve element 5, i.e., valve element 5 with press
A kind of sealing structure of single cone endoporus cambered surface is formed between bar 1.Core assembly in original state, the sealing 12 of valve element 5 with
Also it is tightly connected between valve pad 11 to be hard, the circular cone that a taper is 60 degree is processed on the lateral surface of the sealing 12 of valve element 5
Face.
As shown in figure 8, depression bar 1 is one end open, the structure of inner hollow, the end towards valve element of depression bar 1 is opening
Hold, there is a circular port 27 and a bellmouth 28 at the openend center, in the axial direction, bellmouth 28 is located at circular port 27
Between the blind end of depression bar 1, the diameter of circular port 27 is identical with the diameter of the bigger diameter end of bellmouth 28 and bellmouth 28
Bigger diameter end edge be connected with the edge of circular port 27, the blind end of the miner diameter end of bellmouth 28 close to depression bar 1.The taper of depression bar 1
Hole 28 is the round taper hole that taper is more than 60 degree, and bellmouth 28 uses big cone angle design, can quickly enter back liquid, and be advantageous to
Working chamber returns liquid and reversely rushes depression bar 1 to original state.
As shown in figure 8, as preferably, the side wall of depression bar 1 is provided with the liquid that returns connected with the endoporus of depression bar 1 and balances damping
Hole 26, liquid balance damping hole 26 is returned as, through the manhole set, returning liquid balance damping hole 26 makes pressure in the side wall of depression bar 1
The inner chamber of bar 1 connects with the inner chamber of liquid return valve jacket 2.In the axial direction of depression bar 1, bellmouth 28 be located at back liquid balance damping hole 26 with
Between circular port 27.The design of liquid balance damping hole 26 is returned, pressure can be balanced in time when depression bar 1 moves back and forth and led to
Stomata function, when the left side of depression bar 1 by operating mechanism effect the contact of mobile and valve element 5 forms sealing to the right after, valve element 5 move to right with
Middle valve pocket 3 separates, and highly pressurised liquid enters from main inlet opening, and highly pressurised liquid can be full of bore passages, and left side enters depression bar 1 and returned
The space section of liquid valve pocket 2, so as to reduce the pressure that the left side of depression bar 1 applies, right side enters service pipe and completes feed flow；In addition, by
Two O-ring seals are provided between depression bar 1 and liquid return valve jacket 2, return liquid balance damping hole 26 positioned at two O-ring seals it
Between.Under external force, if being not provided with passage, depression bar 1 is because vacuum principle is difficult to move to right, even if applying very big pressure
Power, mobile space is interior, and there is also negative pressure condition so that depression bar 1 blocks failure.
As shown in figures 1 and 3, for liquid return valve jacket 2 with valve body 16 to be threadedly coupled, core assembly integrally inserts the valve of valve body 16
In chamber and by the threaded connection of liquid return valve jacket 2 and valve body 16, fixation of the core assembly on valve body 16 is realized.Valve pocket is in valve
One end end face of body 16 extends the circular cavity to be formed initially towards the inside of valve body 16, and core assembly inserts in valve pocket and and valve
Body 16 is threaded connection, and core assembly is arranged to be threadedly coupled with valve body 16, easy disassembly and maintenance.Liquid return valve jacket 2 and valve body
Sealing ring is provided between 16, sealing ring is provided between middle valve pocket 3 and valve body 16, is provided between feed liquor valve pocket 4 and valve body 16 close
Seal, while by setting lockable mechanism to be fixedly connected with middle valve pocket 3 and liquid return valve jacket 2, lockable mechanism can prevent middle valve pocket 3
Occur to relatively move vertically with liquid return valve jacket 2 and middle valve pocket 3 can be enable to be relatively rotated with liquid return valve jacket 2.So
Assembled in core assembly and valve body and during core assembly and valve body are dismantled, liquid return valve jacket 2 is in
Between valve pocket 3 can be rotated around its axis, it is logical compared to the middle valve pocket 3 in the reversal valve of prior art and liquid return valve jacket 2
Cross threaded connection, lockable mechanism can avoid because of frictional resistance caused by the inwall extruding for the sealing ring and valve body that outside is arranged and
Caused by occur situation about loosening between liquid return valve jacket and middle valve pocket and occur, cause middle valve pocket 3 to be separated with liquid return valve jacket 2,
So as to improve the reliability that liquid return valve jacket 2 is connected with middle valve pocket 3.Therefore, by lockable mechanism liquid return valve jacket 2 with
Between valve pocket 3 link into an integrated entity, be not in the problem of coming off improve connected between liquid return valve jacket 2 and middle valve pocket 3 it is reliable
Property, and operating efficiency when core assembly dismounts is improved, and due to equal between middle valve pocket 3 and feed liquor valve pocket 4 and valve body
The O-ring seal of quality of rubber materials is provided with, frictional force be present between sealing ring and middle valve pocket 3, feed liquor valve pocket 4 and valve body, this
For sample when liquid return valve jacket 2 rotates relative to valve body 16, the presence of sealing ring causes middle valve pocket 3 and feed liquor valve pocket 4 and valve body 16
Between it is relatively unrotatable, and then also can avoids relatively rotating between middle valve pocket 3 and feed liquor valve pocket 4, in avoiding
Between valve pocket 3 and feed liquor valve pocket 4 separate.
As shown in Fig. 3, Fig. 6 and Fig. 7, with the storage tank 23 for accommodating lockable mechanism, liquid return valve jacket has to be allowed intermediate valve set
The lock groove 22 of lockable mechanism insertion.Storage tank 23 is that the through hole of setting is extended radially through in the side wall of middle valve pocket and is housed
Groove 23 be circumferentially uniformly arranged in the side wall of middle valve pocket it is multiple, lock groove 22 be on the periphery of liquid return valve jacket 2 along whole
The annular groove of individual circumferentially extending.Lockable mechanism sets multiple and multiple lockable mechanisms to be uniformly distributed circumferentially, storage tank 23
Quantity it is identical with the quantity of lockable mechanism, each lockable mechanism is respectively embedded into a storage tank 23, the axis of storage tank 23
With the axis perpendicular of middle valve pocket 3, storage tank 23 and to extend radially through the through hole of setting in the side wall of middle valve pocket 3.
Lockable mechanism include embedded lock groove 22 simultaneously and the lock piece 24 in storage tank 23 and pressure is applied to lock piece 24 so that
Its compressing member 25 fixed.Lock piece 24 is preferably spherical, and the cross section of lock groove 22 is semicircle, and compressing member 25 is preferably to insert
Enter in storage tank 23 and be the screw that is threadedly coupled with middle valve pocket.Compressing member 25 is screwed into storage tank 23, and lock piece 24 is pressed
Tightly so that in the embedded storage tank 23 of the part of lock piece 24, in another part insertion lock groove 22, so as to realize intermediate valve
Connection between set and liquid return valve jacket, and intermediate valve can be made to cover that can be relatively rotated between liquid return valve jacket, centre
Valve pocket will not separate with liquid return valve jacket.Lock groove 22 is circular groove, and lock piece 24 is the spherical partses to match with lock groove 22, can be increased
The efficiency that large back liquid valve pocket 2 rotates, frictional resistance is reduced, in the rotation process of liquid return valve jacket 2, lock piece 24 can be in lock groove 22
In circumferentially enter line slip.
The size of the hard sealing low discharge reversal valve of the present invention be 287*140*43mm, nominal flow rate 125L/min, public affairs
Pressure is referred to as 31.5MPa.
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 (8)
1. sealing low discharge reversal valve firmly, including valve body and two core assemblies, core assembly includes depression bar, liquid return valve jacket, entered
Liquid valve pocket, middle valve pocket and valve element, it is characterised in that：The core assembly also includes being clipped in the feed liquor valve pocket and the centre
Valve pad between valve pocket, valve pad are sheathed on the valve element and realization sealing are engaged with valve element, and valve pad and valve element use metal
Material is made.
2. hard sealing low discharge reversal valve according to claim 1, it is characterised in that：The material of the valve element and the valve pad
Matter is identical, and the hardness of valve pad is less than the hardness of valve element.
3. hard sealing low discharge reversal valve according to claim 1 or 2, it is characterised in that：One end of the middle valve pocket
It is connected with the feed liquor valve pocket, the other end of middle valve pocket is connected by lockable mechanism with the liquid return valve jacket, and lockable mechanism is set
Being set to can prevent middle valve pocket and liquid return valve jacket from occurring to relatively move vertically and middle valve pocket can be enable to be sent out with liquid return valve jacket
It is raw to relatively rotate.
4. hard sealing low discharge reversal valve according to claim 3, it is characterised in that：The intermediate valve set, which has, accommodates institute
The storage tank of lockable mechanism is stated, the liquid return valve jacket has the lock groove for allowing lockable mechanism to be embedded in.
5. hard sealing low discharge reversal valve according to claim 4, it is characterised in that：The storage tank is in the centre
Circumferentially be uniformly arranged in the side wall of valve pocket it is multiple, the lock groove be on the periphery of the liquid return valve jacket along whole circumference
The annular groove of extension, a lockable mechanism is set respectively in each storage tank.
6. the hard sealing low discharge reversal valve according to claim 3 or 4 or 5, it is characterised in that：The lockable mechanism includes
The embedded lock groove and lock piece in the storage tank and pressure is applied to lock piece so that its compressing member for fixing.
7. hard sealing low discharge reversal valve according to claim 6, it is characterised in that：The lock piece is described to be spherical
The cross section of lock groove is semicircle.
8. hard sealing low discharge reversal valve according to claim 7, it is characterised in that：The compressing member be and the centre
Valve pocket is the screw of threaded connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710874363.1A CN107489789A (en) | 2017-09-25 | 2017-09-25 | Hard sealing low discharge reversal valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710874363.1A CN107489789A (en) | 2017-09-25 | 2017-09-25 | Hard sealing low discharge reversal valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107489789A true CN107489789A (en) | 2017-12-19 |
Family
ID=60653068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710874363.1A Withdrawn CN107489789A (en) | 2017-09-25 | 2017-09-25 | Hard sealing low discharge reversal valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107489789A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109296782A (en) * | 2018-11-15 | 2019-02-01 | 北京安锐科技有限公司 | A kind of integrated rotating disc type reversal valve |
| CN112112855A (en) * | 2020-10-13 | 2020-12-22 | 江苏科迈液压控制系统有限公司 | Operating device of double-valve-core multi-way reversing valve with independently controlled load port |
| CN113738914A (en) * | 2020-05-29 | 2021-12-03 | 比亚迪股份有限公司 | Reversing valve |
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| DE2605758B1 (en) * | 1976-02-13 | 1977-07-21 | Hemscheidt Maschf Hermann | CONTROL VALVE FOR HYDRAULICALLY STEPPING STRUCTURE |
| CN2072164U (en) * | 1990-04-14 | 1991-02-27 | 浙江萧山汽车制动器厂 | Valve for backing tractor and unloading |
| CN202047846U (en) * | 2011-05-22 | 2011-11-23 | 丰隆液压有限公司 | Inserted hard-sealed manual reversing valve with automatic resetting device |
| CN102434514A (en) * | 2011-11-17 | 2012-05-02 | 常德中联重科液压有限公司 | Hydraulic valve and valve rod positioning device thereof |
| CN203476359U (en) * | 2013-09-27 | 2014-03-12 | 巨隆集团芜湖兴隆液压有限公司 | Novel small-flow reversing valve |
| CN203626872U (en) * | 2013-12-17 | 2014-06-04 | 巨隆集团芜湖兴隆液压有限公司 | Plug-in type metal ring loop line hard sealing reversing valve |
| CN205400763U (en) * | 2016-02-14 | 2016-07-27 | 乐清市东风煤矿设备有限公司 | Reversing valve |
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2017
- 2017-09-25 CN CN201710874363.1A patent/CN107489789A/en not_active Withdrawn
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2605758B1 (en) * | 1976-02-13 | 1977-07-21 | Hemscheidt Maschf Hermann | CONTROL VALVE FOR HYDRAULICALLY STEPPING STRUCTURE |
| CN2072164U (en) * | 1990-04-14 | 1991-02-27 | 浙江萧山汽车制动器厂 | Valve for backing tractor and unloading |
| CN202047846U (en) * | 2011-05-22 | 2011-11-23 | 丰隆液压有限公司 | Inserted hard-sealed manual reversing valve with automatic resetting device |
| CN102434514A (en) * | 2011-11-17 | 2012-05-02 | 常德中联重科液压有限公司 | Hydraulic valve and valve rod positioning device thereof |
| CN203476359U (en) * | 2013-09-27 | 2014-03-12 | 巨隆集团芜湖兴隆液压有限公司 | Novel small-flow reversing valve |
| CN203626872U (en) * | 2013-12-17 | 2014-06-04 | 巨隆集团芜湖兴隆液压有限公司 | Plug-in type metal ring loop line hard sealing reversing valve |
| CN205400763U (en) * | 2016-02-14 | 2016-07-27 | 乐清市东风煤矿设备有限公司 | Reversing valve |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109296782A (en) * | 2018-11-15 | 2019-02-01 | 北京安锐科技有限公司 | A kind of integrated rotating disc type reversal valve |
| CN109296782B (en) * | 2018-11-15 | 2024-01-19 | 北京安锐科技有限公司 | Integrated rotary disc type reversing valve |
| CN113738914A (en) * | 2020-05-29 | 2021-12-03 | 比亚迪股份有限公司 | Reversing valve |
| CN112112855A (en) * | 2020-10-13 | 2020-12-22 | 江苏科迈液压控制系统有限公司 | Operating device of double-valve-core multi-way reversing valve with independently controlled load port |
| CN112112855B (en) * | 2020-10-13 | 2021-03-26 | 江苏科迈液压控制系统有限公司 | Operating device of double-valve-core multi-way reversing valve with independently controlled load port |
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Application publication date: 20171219 |