CN106382125B - Colliery pressure three-purpose valve based on micro forming spool and special-shaped valve chamber - Google Patents
Colliery pressure three-purpose valve based on micro forming spool and special-shaped valve chamber Download PDFInfo
- Publication number
- CN106382125B CN106382125B CN201611094299.7A CN201611094299A CN106382125B CN 106382125 B CN106382125 B CN 106382125B CN 201611094299 A CN201611094299 A CN 201611094299A CN 106382125 B CN106382125 B CN 106382125B
- Authority
- CN
- China
- Prior art keywords
- valve
- restriction
- spool
- section
- chamber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000013016 damping Methods 0.000 claims abstract description 31
- 210000003746 feather Anatomy 0.000 claims abstract description 16
- 239000007788 liquid Substances 0.000 claims description 39
- 230000004323 axial length Effects 0.000 claims 1
- 230000003628 erosive effect Effects 0.000 abstract description 22
- 238000005461 lubrication Methods 0.000 abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 11
- 238000005299 abrasion Methods 0.000 abstract description 5
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 230000002706 hydrostatic effect Effects 0.000 abstract description 2
- 238000009740 moulding (composite fabrication) Methods 0.000 description 42
- 238000007789 sealing Methods 0.000 description 31
- 239000012530 fluid Substances 0.000 description 23
- 238000013461 design Methods 0.000 description 12
- 239000002609 medium Substances 0.000 description 11
- 230000000694 effects Effects 0.000 description 10
- 238000000034 method Methods 0.000 description 10
- 238000002347 injection Methods 0.000 description 9
- 239000007924 injection Substances 0.000 description 9
- 239000003245 coal Substances 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- 239000012736 aqueous medium Substances 0.000 description 7
- 239000000839 emulsion Substances 0.000 description 7
- 230000033001 locomotion Effects 0.000 description 7
- 230000008859 change Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 238000011144 upstream manufacturing Methods 0.000 description 6
- 238000009826 distribution Methods 0.000 description 5
- 239000012071 phase Substances 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 238000003754 machining Methods 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 230000033228 biological regulation Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 239000008358 core component Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000001050 lubricating effect Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 239000000306 component Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 210000004907 gland Anatomy 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000338 in vitro Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 238000005491 wire drawing Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/50—Component parts or details of props
- E21D15/51—Component parts or details of props specially adapted to hydraulic, pneumatic, or hydraulic-pneumatic props, e.g. arrangements of relief valves
- E21D15/512—Arrangement of valves
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Safety Valves (AREA)
Abstract
Colliery pressure three-purpose valve based on micro forming spool and special-shaped valve chamber, is related to colliery water hydrostatic transmission field.Including left valve cylinder, right valve cylinder, check valve, feather valve, safety valve and connecting screw, wherein safety valve includes spool, valve pocket, end cap, spring base, safety valve spring, look nut, valve pad II and damping.Valve pocket is installed on inside right valve cylinder, is connected through a screw thread between valve pocket and connecting screw, and spool is installed on inside valve pocket, and spool face is equipped with micro forming structure.Spool and valve pocket, which coordinate, forms special-shaped valve chamber structure, and special-shaped valve chamber includes restriction I, restriction II, restriction III, piston chamber, ante-chamber, lumen, drainage lumens and back cavity.Restriction I is guiding valve restriction, and by one section of circular arc and one section of long rectilinear(-al), valve pocket wall is made of spool wall one section of short straight line and one section of oblique line at restriction II, and flow guiding structure is equipped with restriction III at restriction II.The present invention can improve the problems such as cavitation erosion, lubrication and abrasion of pressure three-purpose valve safety valve.
Description
Technical field
It is specifically a kind of based on micro forming spool and special-shaped valve chamber the invention belongs to colliery water hydrostatic transmission field
Colliery pressure three-purpose valve.
Background technology
Traditional hydraulic prop and its triple-use valve are working media using emulsion, and the annual emulsion that configures need to disappear
Nearly ten thousand tons of oil emulsion is consumed, and whole emulsions is all discharged into goaf, finally flows into rivers lake and body of groundwater, to water body
Cause seriously to pollute.In addition, emulsion is perishable, so as to grow bacterium and mould, the working environment and body of coal miner are influenced
Body health, configuring the equipment of emulsion also needs periodic cleaning inspection, and expends a large amount of chemical synthesis agent, and use cost is high, worker
Labor intensity is big.Compared with emulsifiable solution medium, aqueous medium have safety and environmental protection, cheap, convenient storage, use cost low and
Many advantages, such as adaptable.And underground coal mine water aboundresources, the low-lying place's ponding in part also need special pump drainage to handle, warp is used
The underground waste water of processing substitutes emulsion as working media, to mining area waste water reuse, reduces coal mine support cost, protects ore deposit
Area's environment, promotes mine energy conservation emission reduction, improves the working environment of workers etc. and is of great significance, it is sustainable to meet national energy-saving emission reduction
The Strategic Demand of development.
But the viscosity of aqueous medium is low, poor lubricity, electric conductivity are strong, be easy to cause corrosion, wear of valve parts etc. and asks
Topic.In addition, the vapor pressure of water is higher than oils vapor pressure, easily forms parital vacuum at the restriction of water hydraulic element and produce
A large amount of air pockets, air pocket enter higher-pressure region and are pressurized and crumble and fall, and local assault and TRANSIENT HIGH TEMPERATURE can be produced, so as to cause element function to drop
It is low, produce vibration, noise and wire drawing erosion, erosion, impact etc., shortening element service life.It is reduced or eliminated above-mentioned existing
As in addition to being accounted in the treatment process from the selection of material and material, also answering emphasis from Technique for Water Hydraulic Components and system
Structure design is set about, and proposes the innovation structure suitable for Technique for Water Hydraulic Components.
Triple-use valve is the core component of hydraulic prop, and hydraulic prop controls the liter of hydraulic prop by triple-use valve
Column just supports, carries overflow and unloading prop drawing process.Triple-use valve is composed of three kinds of check valve, safety valve and feather valve valves, its
Middle check valve and feather valve are only opened in liquid filling pole-raising and unloading prop drawing respectively, and safety valve control pillar carrying overflow
Journey, it is opened frequently, is significantly larger than check valve and feather valve using with operating frequency.Therefore, safety valve is to determine in triple-use valve
The core component of its performance, the structure innovation of emphasis consideration safety valve is answered for the structure design of triple-use valve.
Pressure three-purpose valve is using the triple-use valve that pure water is working media.Since the physicochemical property of aqueous medium determines, water
In pressure triple-use valve there is more serious fretting wear in the spool friction pair of safety valve, and there are more serious cavitation erosion to break for valve port
Bad problem.Therefore, the fretting wear problem of safety valve and cavitation erosion problem must be effectively suppressed and improve.
Micro forming technology is that the microscopic appearance of rule distribution is processed in surface of friction pair, to produce hydrodynamic lubrication effect.
Mechanical seal, engine piston ring, thrust bearing, cutter be wear-resistant etc., field has been applied successfully micro forming technology at present.
The micro forming that spool opens up rule distribution can improve the secondary fretting wear of spool friction and greasy property.The micro- hole of micro forming can also deposit
Micro lubricating liquid is stored up, in unlubricated friction scrape along Starved Lubrication, produces the effect of secondary lubrication.In addition, micro forming is also micro- with storing
The ability of small solid abrasive particles, so as to reduce the three-body-abrasion problem produced between spool, valve pocket and micro- abrasive particle.
Special-shaped valve chamber is by the profile design of spool and valve pocket into special-shaped curvilinear structures, passes through structural change valve chamber flow field
The parameters such as flow velocity, streamline, pressure distribution, and then change position, power and scope that valve chamber air pocket produces, so as to slow down or shift
The cavitation erosion of the important valve port of valve chamber and band.
The problems such as in order to solve the lubrication of single hydraulic prop hydraulic pressure three-purpose valve, abrasion and impact, the of the invention first hair
The patent of the China Patent No. 201410131184.5 of the proposition such as a person of good sense and the second inventor discloses a kind of hydraulic prop
Big flow pressure three-purpose valve.The spool of the pressure three-purpose valve safety valve uses common slide valve structure, and is provided with spool face
Micro forming structure, improves the lubrication and wear problem of safe valve core.But by further study show that, common spool and valve
Set only has level-one restriction, and the pressure of underground coal mine support equipment is generally more than 30MPa at present, when being subject to shock loading,
Instantaneous pressure higher, from throttling formula of index, instantaneous pressure will cause serious cavitation erosion in valve port.Cause
This, it is necessary to change spool and housing configuration, to slow down valve port cavitation erosion.Further, since limited be subject to common valve core structure size,
The micro forming number being arranged on common spool is less, and the dynamic pressure bearing capacity of micro forming is the population effect by micro forming
Produce, the hydrodynamic lubrication effect very little of single micro forming.Therefore, the hydrodynamic lubrication for the micro forming that common slide valve spool is subject to and
It is limited to carry action effect.And after using special-shaped valve chamber structure, the diameter of spool is increased, and the secondary area of spool friction increases
Greatly, so as to setting more micro formings so that the population effect of micro forming hydrodynamic lubrication carrying is more prominent, further improves
The lubrication and wear problem of spool.
Colliery pressure three-purpose valve of the present invention based on micro forming spool and special-shaped valve chamber, using special-shaped valve chamber knot
Structure, is weakened and shifted by special-shaped valve chamber structure and cavitated, so as to improve the cavitation erosion of valve port；And eliminate the valve seat of safety valve
Structure, suitably increases valve core structure size, increase spool surface of friction pair micro forming can machining area so that further
Improve the lubrication and wear resistance of pressure three-purpose valve safety valve.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of colliery water based on micro forming spool and special-shaped valve chamber
Triple-use valve is pressed, while the cavitation erosion problem of pressure three-purpose valve safety valve is improved, further improves the profit of spool micro forming
The maximum stream flow of sliding and load-carrying properties and valve port.The technical problems to be solved by the invention are using following technical scheme come real
It is existing.
Colliery pressure three-purpose valve based on micro forming spool and special-shaped valve chamber, including left valve cylinder, right valve cylinder, check valve, unload
Carry valve, safety valve and connecting screw.It is connected through a screw thread between left valve cylinder and right valve cylinder, check valve, feather valve and safety valve are successively
Installed in the inside of left valve cylinder and right valve cylinder, connected between check valve and safety valve by connecting screw, feather valve is installed on single
To between valve and safety valve；The safety valve includes spool, valve pocket, end cap, spring base, safety valve spring, look nut, valve pad
II and damping, the valve pocket by cylindrical pair be installed on right valve cylinder inside, be connected through a screw thread between valve pocket and connecting screw, spool
It is installed on by cylindrical pair inside valve pocket, look nut passes through ball by being threadably mounted at valve pocket end, spring base with valve core chamber
Pair connection, the both ends of safety valve spring are pressed on spring base and look nut respectively, and valve pad II is installed on valve pocket, and with end
Lid is in close contact, and damping is installed on valve core inside.
The spool is made of guiding valve section, I section of valve port, II section of valve port, guide section, damping section and mandril section.It is wherein sliding
The outer surface of valve section, guide section and mandril section is equipped with micro forming；Guiding valve section, I section of valve port, the maximum of II section of valve port and guide section
Outside diameter is identical.The cavity wall of guiding valve section is equipped with fluid hole, and valve core inside center is equipped with the spool bore of connection valve chamber and damping cavity.Guiding valve
Section, I section of valve port, II section of valve port, guide section and mandril Duan Junyu valve sleeving inner walls form cylindrical pair, ensure that spool has well
Guidance quality, and stable movement.The runner of guiding valve section is opened in valve core inside, ensure that guiding valve section begins in spool moving process
There is guiding role eventually, further increase guiding accuracy of the spool inside valve pocket.Guiding valve section, I section of valve port, II section of valve port and
Guide section is identical with the diameter for the cylindrical pair that valve pocket inner surface coordinates, and not only ensure that the assembling capacity of spool, it is thus also avoided that because
The cavity volume change for ante-chamber, lumen and the back cavity that spool is mobile and produces, and then prevent valve chamber from producing " pocketed oil " phenomenon.
Micro forming not only has the function of hydrodynamic lubrication, is also equipped with storing the function of micro- abrasive particle and micro lubricating liquid.Coal
Bad environments under mine, the molecule such as coal grain and sandstone is seriously polluted to hydraulic medium, and molecule enters with hydraulic medium
Spool friction pair has further aggravated valve port abrasion.Therefore, the molecule into valve port can be stored by micro forming, so that
Improve the secondary antipollution of spool friction, wear resistance；Micro forming can also store liquid medium at the same time, in dry friction or poor glossy
When sliding, the micro liquid medium of micro forming storage has the function of secondary feed flow lubrication, so as to mitigate the secondary friction of spool friction
And wear-out failure.
Compared with traditional triple-use valve, the designed colliery pressure three-purpose valve based on micro forming spool and special-shaped valve chamber eliminates
The valve seat construction of safety valve, on the premise of ensureing that there is good interchangeability with traditional triple-use valve, designed pressure three-purpose valve
The diameter bigger of the spool of safety valve, the micro forming of spool face can machining area area bigger, the micro forming number that can be set
More, the population effect of micro forming hydrodynamic lubrication and bearing capacity is more obvious.
Spool and valve pocket, which coordinate, forms special-shaped valve chamber structure, special-shaped valve chamber include restriction I, restriction II, restriction III,
Piston chamber, ante-chamber, lumen, drainage lumens and back cavity.Restriction I is guiding valve restriction, and spool wall is by one section of circle at restriction II
Arc and one section of long rectilinear(-al), valve pocket wall is made of one section of short straight line and one section of oblique line at restriction II.Designed abnormity
When valve chamber both can guarantee that valve chamber pressure was more than first bulging power and is less than rated pressure, valve port is in sealing state；And work as valve chamber pressure
When power is more than rated pressure, valve port can be opened immediately again, pass through two-step throttle mouth quick pressure releasing.Long straight line and short straight line coordinate and make
Restriction closure is obtained, circular arc and oblique line coordinate so that restriction is opened.This external arc and oblique line respectively assist in optimization spool wall
Face and valve pocket near wall flow field, suppress spool and valve pocket near wall fluid flow line is separated with wall, force fluid attached jet
It is dynamic, so that letter is small and shifts restriction air pocket, further slows down cavitation erosion, protect important overcurrent valve port and its band.
When II valve port angle of restriction and III valve port angle of restriction take 45 °, the air pocket area and intensity at restriction III are smaller.
The restriction III is identical with the structure of restriction II, the closing capacity of restriction III and the closing capacity of restriction II
It is equal, and the closing capacity of restriction III and restriction II is all higher than the closing capacity of restriction I.Due to the difference of closing capacity, cause
Valve port, which is opened, is divided into two stages.When hydraulic prop chamber is first bulging power, spool forefront pressure is relatively low, restriction I
Fluid hole is covered by valve pocket, and restriction II and restriction III are also at sealing state at this time.Increase with the pressure of pillar chamber, go out liquid
Hole is opened, and piston chamber connected by fluid hole with the ante-chamber of II upstream of restriction, but restriction II and restriction III be still at this time
In sealing state.When the load that pillar is subject to continues increase, the pressure of pillar chamber exceedes pressure three-purpose valve therewith increasing
Rated operating pressure, spool further move, and promote restriction II and restriction III while open, ante-chamber and restriction II, in
Runner between chamber, restriction III, drainage lumens and back cavity is connected.The runner of whole abnormity valve chamber has three restrictions, increases
Sealing performance during valve closure.During special-shaped valve chamber conducting, the highly pressurised liquid of pillar chamber passes sequentially through restriction II and restriction
III pressure is released, and under the effect of the two-step throttle of restriction II and restriction III, is arranged outside liquid.Pressure is by two restrictions
Shared, the pressure that single restriction undertakes are reduced.Therefore, the cavitation erosion of valve port is weakened.
Flow guiding structure is equipped with the restriction III, flow guiding structure is conduction hole or drainage trough.Flow guiding structure can be by height
The liquid of pressure area introduces low pressure core area, influences local main flow beam, suppresses low pressure core area pressure and declines, so as to slow down local gas
Erosion destroys, i.e., suppresses valve port low-pressure area air pocket size and scope by pressure compensation, so as to slow down cavitation erosion.Due to restriction
The back cavity in III downstream is connected with the pressure three-purpose valve external world, and the pressure of the lumen of III upstream of restriction is higher, causes restriction III
Place easily produces air pocket；And the pressure of the ante-chamber of II upstream of restriction is high, the pressure of the lumen in II downstream of restriction is also higher, causes
Make to produce air pocket possibility at restriction II relative to small at restriction III；And in restriction III and the complete phase of II structure of restriction
With in the case of, air pocket is first come across at restriction III, when situation further deteriorates, can just be produced at restriction II.Therefore,
Flow guiding structure should be arranged at restriction III.
The radial dimension of the back cavity is equal with axial dimension, and the incoming side of back cavity is equipped with liquid outlet.Radial dimension
With axial dimension composition square structure equal in magnitude, valve chamber vortex convolution is helped, the air pocket shape of generation is regular, and air pocket face
Product is smaller, and air pocket intensity is relatively low, so as to slow down cavitation erosion.Liquid outlet is arranged on the incoming side of back cavity, contributes to guiding to flow
Body flow direction and vortex recirculation, so as to mitigate the air pocket of valve port jet stream injection generation, and are arranged on incoming side and additionally aid
Formed and be vortexed, vortex recirculation will extrude incoming, so as to weaken air pocket, further slow down cavitation erosion.
After using micro forming spool and special-shaped valve chamber structure, the radial dimension increase of spool, causes safety valve spring
Axial dimension increase, the design and installation to safety valve spring bring difficulty.Further to solve the above problems, the bullet
Spring abutment is made of base, pull rod and external screw thread, and pull rod is arranged on base center, and external screw thread is arranged on pull rod end.The tune
Pressure nut is equipped with internal thread, counterbore, smooth hole and chassis.Look nut is rotated, look nut is screwed in by drawing by internal thread
On the external screw thread of bar end, by the continuous precession of screw thread, slow compressing secure valve spring is interior after spring-compressed certain distance
Screw thread and external screw thread, which depart from, to be screwed, and screw thread is screwed with the screw thread entrance on valve sleeving inner wall on chassis, continues to rotate look nut,
The further compressing secure valve spring of look nut, so that the volume of the precompression of regulation safety valve spring, i.e. setting safety valve spring
Level pressure force value.Since the rigidity of safety valve spring is larger, screwed by internal thread with externally threaded, safety valve spring is carried out just
Step compression, facilitates the installation of safety valve spring, and substantially reduces the length of valve pocket, saves space so that hydraulic pressure three is used
The structure of valve is compacter.In addition, after screw thread on chassis and the screw thread on valve sleeving inner wall enter and screw, internal thread and external screw thread
Depart from again and screw, the movement of spring base and look nut no longer interferes, and when ensure that safety valve work, its spool can promote
Spring base compressing secure valve spring.
The safety valve is equipped with damping cavity, and damping cavity is the space surrounded by spool, valve pocket and end cap profile.From list
The highly pressurised liquid of body hydraulic prop column chamber enters damping cavity by damping and spool bore, and acts on the end of the spool of damping cavity
Face, and offset the pressure that part spool front end face highly pressurised liquid produces.So that the axial compressive force that spool is subject to reduces, make peace
The pressure that full valve spring is born reduces, and rigidity necessary to safety valve spring and radial dimension reduce, so as to reduce safety
The design difficulty of valve spring.In addition, highly pressurised liquid additionally aids the stabilization of valve core movement by damping.
In order to strengthen the sealing performance of pressure three-purpose valve, important sealing station is provided with sealing element.Pressure three-purpose valve
Sealed between hydraulic prop by sealing ring V, check valve is formed by one-way valve seat and steel ball and sealed, and feather valve leads to
Cross valve pad I and form sealing with the baffle ring II inside left valve cylinder.Sealed between valve pocket and right valve cylinder by sealing ring III, spool guiding valve section
Sealed between valve pocket by sealing ring IV, sealed by sealing ring II between spool guide section and valve pocket, passed through between end cap and valve pocket
Valve pad II seals, and is sealed between spool mandril section and end cap by sealing ring I.
The invention has the advantages that devising a kind of special-shaped valve chamber structure, valve chamber flow field is improved, weakens and displaced
The air pocket of important valve port and band, so as to protect important overcurrent valve port, improves the performance and service life of spool.
Since the valve core diameter that the special-shaped valve chamber of design needs is larger, the valve seat construction of safety valve is eliminated, also so that special-shaped valve chamber section
The area of passage of head piece is also relatively large.From valve port pressure flow equation, under equal pressure and traffic conditions, restriction
Flow velocity is lower.Therefore, the maximum license flow velocity increase of valve port, the maximum instantaneous flow increase of pressure three-purpose valve, support system
Supporting performance further improves.In addition, special-shaped valve chamber structure increases valve core diameter so that the seal section of safe valve core and leads
To section surface of friction pair micro forming can machining area increase so that further increase pressure three-purpose valve safety valve lubrication and
Wear resistance.
Brief description of the drawings
Fig. 1 is the general structure schematic diagram of the present invention；
Fig. 2 is the safety valve structure schematic diagram of the present invention；
Fig. 3 is the safety valve abnormity valve chamber partial structural diagram of the present invention；
Fig. 4 is the safety valve abnormity valve chamber fluid domain partial structural diagram of the present invention；
Fig. 5 is the valve core structure schematic diagram of safety valve when flow guiding structure uses conduction hole；
Fig. 6 is the valve core structure schematic diagram of safety valve when flow guiding structure uses drainage trough；
Fig. 7 for flow field at the restriction III of no high pressure flow guiding structure motion pattern；
Fig. 8 is the air pocket cloud charts at restriction III under the different valve port angles of no high pressure flow guiding structure；
Fig. 9 is the restriction III of no high pressure flow guiding structure and the pressure cloud charts of restriction II；
Figure 10 is the restriction III of no high pressure flow guiding structure and the air pocket cloud charts of restriction II；
Figure 11 is the three-dimensional air pocket distribution map without high pressure flow guiding structure at restriction III；
Figure 12 is the three-dimensional air pocket cloud charts for having at restriction III high pressure flow guiding structure；
Different radial dimensions of the Figure 13 for no high pressure flow guiding structure and the air pocket of restriction III and back cavity point under axial dimension
Cloth cloud atlas；
Figure 14 for no high pressure flow guiding structure liquid outlet in diverse location the air pocket cloud charts of restriction III and back cavity；
In figure：1. left valve cylinder；2. right valve cylinder；3. check valve；4. feather valve；5. safety valve；6. connecting screw；31. fluid injection
Valve body；32. stop collar；33. one-way valve seat；34. steel ball；35. one-way valve spring；36. gland nut；41. unloaded spring；
42. valve pad I；51. spool；52. valve pocket；53. end cap；54. spring base；55. safety valve spring；56. look nut；57. valve pad
Ⅱ；58. damping；511. guiding valve sections；512. I section of valve ports；513. II section of valve ports；514. guide section；515. damping sections；516. mandril
Section；517. micro forming；541. base；542. pull rod；543. external screw thread；561. internal thread；562. counterbore；563. smooth hole；
564. chassis；91. sealing ring I；92. sealing ring II；93. sealing ring III；94. sealing ring IV；95. sealing ring V；A. restriction
Ⅰ；B. restriction II；C. restriction III；A. liquid injection hole；B. screw rod is into hole I；C. screw rod portals I；D. valve chamber I；E. I is exported；F. spiral shell
Bar is into hole II；G. screw rod portals II；H. fluid hole；Q. piston chamber；I. ante-chamber；J. lumen；K. flow guiding structure；K. drainage lumens；L.
Back cavity；M. exocoel；N. gap；P. baffle ring I；Q. liquid outlet；R. spool bore；S. damping cavity；T. baffle ring II；U. circular arc；V. it is long straight
Line；W. short straight line；X. oblique line；Y. radial dimension；Z. axial dimension；II valve port angle of θ restrictions；III valve port of β restrictions presss from both sides
Angle.
Embodiment
In order to make the technical means, creative features, achievable purpose and effectiveness that the present invention is realized easy to understand, below
In conjunction with specific embodiments and illustrate, the present invention is further explained.
As shown in Figure 1 to Figure 3, the colliery pressure three-purpose valve based on micro forming spool and special-shaped valve chamber, including left valve cylinder 1,
Right valve cylinder 2, check valve 3, feather valve 4, safety valve 5 and connecting screw 6.It is connected through a screw thread between left valve cylinder 1 and right valve cylinder 2, it is single
The inside of left valve cylinder 1 and right valve cylinder 2 is sequentially arranged to valve 3, feather valve 4 and safety valve 5, is led between check valve 3 and safety valve 5
Cross connecting screw 6 to connect, feather valve 4 is installed between check valve 3 and safety valve 5；The safety valve 5 includes spool 51, valve pocket
52nd, end cap 53, spring base 54, safety valve spring 55, look nut 56, valve pad II 57 and damping 58, the valve pocket 52 passes through circle
Column is secondary to be installed on inside right valve cylinder 2, is connected through a screw thread between valve pocket 52 and connecting screw 6, spool 51 is installed on by cylindrical pair
Inside valve pocket 52, look nut 56 is connected by being threadably mounted at 52 end of valve pocket between spring base 54 and spool 51 by the way that ball is secondary,
The both ends of safety valve spring 55 are pressed on spring base 54 and look nut 56 respectively, and valve pad II 57 is installed on valve pocket 52, and
It is in close contact with end cap 53, damping 58 is installed on inside spool 51.
As shown in Figure 2, Figure 5 and Figure 6, the spool 51 by guiding valve section 511, I section 512 of valve port, II section 513 of valve port, lead
Formed to section 514, damping section 515 and mandril section 516.The outer surface of wherein guiding valve section 511, guide section 514 and mandril section 516 is equal
Equipped with micro forming 517；Guiding valve section 511, I section 512 of valve port, the maximum outside diameter of II section 513 of valve port and guide section 514 are identical.Guiding valve
The cavity wall of section 511 is equipped with fluid hole h, and 51 inside center of spool is equipped with connection valve chamber and the spool bore r of damping cavity.Guiding valve section 511,
I section 512 of valve port, II section 513 of valve port, guide section 514 and mandril section 516 form cylindrical pair with valve sleeving inner wall, ensure that spool
51 have good guidance quality, and stable movement.The runner of guiding valve section 511 is opened in inside spool 51, ensure that guiding valve section
511 have guiding role all the time in 51 moving process of spool, further increase guiding essence of the spool 51 inside valve pocket 52
Degree.The cylindrical pair that guiding valve section 511, I section 512 of valve port, II section 513 of valve port and guide section 514 coordinate with 52 inner surface of valve pocket it is straight
Footpath is identical, not only ensure that the assembling capacity of spool, it is thus also avoided that because of ante-chamber i, lumen j and the back cavity that spool 51 being moved and produced
The cavity volume change of L, and then prevent valve chamber from producing " pocketed oil " phenomenon.Micro forming not only has the function of hydrodynamic lubrication, also has
The standby function of storing micro- abrasive particle and micro lubricating liquid.Underground coal mine bad environments, the molecule such as coal grain and sandstone is to hydraulic pressure
Medium pollution is serious, and molecule enters spool friction pair with hydraulic medium and further aggravated valve port abrasion.Therefore, can borrow
Micro forming storage is helped into the molecule of valve port, so as to improve the secondary antipollution of spool friction, wear resistance；It is micro- at the same time to make
Type can also store liquid medium, and in dry friction or Starved Lubrication, the micro liquid medium of micro forming storage has secondary feed flow
The function of lubrication, is destroyed so as to mitigate the secondary friction and wear of spool friction.
Compared with traditional triple-use valve, the designed colliery pressure three-purpose valve based on micro forming spool and special-shaped valve chamber eliminates
The valve seat construction of safety valve 5, on the premise of ensureing that there is good interchangeability with traditional triple-use valve, designed pressure three-purpose valve
The diameter bigger of the spool 51 of safety valve, the micro forming on 51 surface of spool can machining area area bigger, the micro forming that can be set
Number is more, and the population effect of micro forming hydrodynamic lubrication and bearing capacity is more obvious.
As shown in Figure 3 and Figure 4, spool 51 and valve pocket 52, which coordinate, forms special-shaped valve chamber structure, and special-shaped valve chamber includes restriction I
A, II B of restriction, III C of restriction, piston chamber Q, ante-chamber i, lumen j, drainage lumens K and back cavity L.I A of restriction throttles for guiding valve
Mouthful, spool wall is made of one section of circular arc u and straight line v one section long at II B of restriction, and valve pocket wall is by one section at II B of restriction
Short straight line w and one section of oblique line x composition.Designed special-shaped valve chamber both can guarantee that valve chamber pressure was more than first bulging power and is less than specified
During pressure, valve port is in sealing state；And when valve chamber pressure is more than rated pressure, valve port can be opened immediately again, pass through two level
Restriction quick pressure releasing.Long straight line v and short straight line w coordinate so that restriction closure, circular arc u and oblique line x, which coordinate, causes restriction
Open.
Fig. 7 intuitively shows the influence of restriction Shapes body streamline, Fig. 8 from left to right, from top to bottom to be equal
Under the conditions of, II valve port angle theta of restriction and III valve port angle β values of restriction are equal, and take respectively 15 °, 22.5 °, 30 °,
At 37.5 ° and 45 °, the air pocket cloud charts at III C of restriction.Fig. 7 and Fig. 8 is by computation fluid dynamics software emulation meter
Obtain, design conditions are inlet pressure 10MPa, outlet pressure 0.1MPa, aqueous medium cavitation pressure 2340Pa.It is digital in Fig. 8
For gas phase and the volume ratio of liquid phase.From Fig. 7 and Fig. 8, circular arc u and oblique line x respectively assist in optimization spool wall and valve pocket
Near wall flow field, suppresses spool and valve pocket near wall fluid flow line is separated with wall, fluid jet attached flow is forced, so that simple
Small and transfer restriction air pocket, further slows down cavitation erosion, protects important overcurrent valve port and its band.And restriction II
When valve port angle theta and III valve port angle β of restriction take 45 °, the air pocket area and intensity at III C of restriction are smaller.
As shown in Fig. 2 to Fig. 4, III C of restriction is identical with the structure of II B of restriction, the closing capacity of III C of restriction
It is equal with the closing capacity of II B of restriction, and the closing capacity of II B of III C of restriction and restriction is all higher than the closing capacity of I A of restriction.
Due to the difference of closing capacity, cause valve port to open and be divided into two stages.When hydraulic prop chamber is first bulging power, spool 51
Forefront pressure is relatively low, and the fluid hole h of I A of restriction is covered by valve pocket 52, and II B of restriction and III C of restriction are also at sealing at this time
State.Increase with the pressure of pillar chamber, fluid hole h is opened, and piston chamber Q passes through fluid hole h and the ante-chamber i of II B upstreams of restriction
Connection, but II B of restriction and III C of restriction are still within sealing state at this time.When the load that pillar is subject to continues increase, branch
The pressure of column chamber exceedes pressure three-purpose valve rated operating pressure therewith increasing, and spool further moves, promote II B of restriction and
III C of restriction is opened at the same time, and the runner between II B of ante-chamber i and restriction, lumen j, III C of restriction, drainage lumens K and back cavity L is connected
It is logical.The runner of whole abnormity valve chamber has three restrictions, adds sealing performance during valve closure.During special-shaped valve chamber conducting,
The highly pressurised liquid of pillar chamber passes sequentially through II B of restriction and III C pressure of restriction is released, in II B of restriction and restriction
Under the two-step throttle effect of III C, arranged outside liquid.By two restriction shareds, the pressure that single restriction undertakes obtains pressure
To reduction.Therefore, the cavitation erosion of valve port is weakened.
As shown in Figure 3, Figure 5 and Figure 6, flow guiding structure k is equipped with III C of restriction.The flow guiding structure k is to draw
Discharge orifice or drainage trough.The liquid of higher-pressure region can be introduced low pressure core area by flow guiding structure k, influenced local main flow beam, suppressed low pressure
Core space pressure declines, so as to slow down local cavitation erosion, i.e., suppresses valve port low-pressure area air pocket size and model by pressure compensation
Enclose, so as to slow down cavitation erosion.Since the back cavity L in III C downstreams of restriction is connected with the pressure three-purpose valve external world, and III C of restriction
The pressure of the lumen j of upstream is higher, causes easily to produce air pocket at III C of restriction；And the pressure of the ante-chamber i of II B upstreams of restriction
Power is high, and the pressure of the lumen j in II B downstreams of restriction is also higher, causes to produce air pocket possibility at II B of restriction relative to throttling
It is small at III C of mouth；And in the case where III C of restriction is identical with II B structure of restriction, air pocket first comes across III C of restriction
Place, when situation further deteriorates, can just produce at II B of restriction.Therefore, flow guiding structure k should be arranged at III C of restriction.
Fig. 9 and Figure 10 respectively illustrates the pressure and air pocket cloud charts of III C of restriction and II B of restriction, and cloud atlas is by counting
Fluid operator mechanics CFD software simulation calculation obtains, and numeral is pressure value in Fig. 9, unit Pa.Numeral is gas phase and liquid in Figure 10
The volume ratio of phase.Design conditions are inlet pressure 10MPa, outlet pressure 0.1MPa, aqueous medium cavitation pressure 2340Pa.By Fig. 9
With Figure 10 understand, although the pressure at II B of restriction is higher than at III C of restriction, air pocket still appear at III C of restriction and its
At the back cavity L in downstream.Further illustrate, flow guiding structure k should be arranged at III C of restriction, without being provided in II B of restriction
Place.
Figure 11 is the three-dimensional air pocket distribution map without high pressure flow guiding structure at III C of restriction, and Figure 12 is to have height at III C of restriction
Press the three-dimensional air pocket cloud charts of flow guiding structure.Cloud atlas is obtained by computation fluid dynamics Software simulation calculation, and design conditions are
Inlet pressure 10MPa, outlet pressure 0.1MPa, aqueous medium cavitation pressure 2340Pa.As shown in Figure 11, during no high pressure flow guiding structure
III C of restriction there are larger area air pocket, and without air pocket at II B of restriction.When as shown in Figure 12, using high pressure flow guiding structure
Produced at II B of III C of restriction and restriction without air pocket, and the air pocket of the backseat such as back cavity L and its periphery also obtains substantially
Improve.
As shown in figure 4, the radial dimension y of the back cavity L is equal with axial dimension z, the incoming side of back cavity L is equipped with out
Liquid mouth q.Radial dimension y and axial dimension z composition square structures equal in magnitude, help valve chamber vortex convolution, the air pocket of generation
Shape is regular, and air pocket area is smaller, and air pocket intensity is relatively low, so as to slow down cavitation erosion.Liquid outlet q is arranged on coming for back cavity L
Side is flowed, helps to guide fluid flow direction and vortex recirculation, so as to mitigate the air pocket of valve port jet stream injection generation, and is set
Additionally aid to form vortex in incoming side, vortex recirculation will extrude incoming, so as to weaken air pocket, it is broken further to slow down cavitation erosion
It is bad.
The radial dimension y that Figure 13 is back cavity L is respectively greater than, be equal to and III C of restriction during less than axial dimension z and its under
Swim the air pocket cloud charts of back cavity L.Figure 14 is separately positioned on the incoming side of back cavity L, centre position for liquid outlet q and away from coming
III C of restriction and the air pocket cloud charts of back cavity L downstream when flowing side.Numeral is gas phase and liquid phase in Figure 13 and Figure 14
Volume ratio, design conditions are also inlet pressure 10MPa, outlet pressure 0.1MPa, aqueous medium cavitation pressure 2340Pa.Figure 13
The radial dimension y for further illustrating back cavity L with Figure 14 should be equal with axial dimension z, and liquid outlet q should be arranged on coming for back cavity L
Flow side.
After using micro forming spool and special-shaped valve chamber structure, the radial dimension increase of spool 51, causes safety valve bullet
The axial dimension increase of spring 55, the design and installation to safety valve spring 55 bring difficulty.As shown in Fig. 2, further to solve
The above problem, the spring base 54 are made of base 541, pull rod 542 and external screw thread 543, and pull rod 542 is arranged on base 541
Center, external screw thread 543 are arranged on 542 end of pull rod.The look nut 56 is equipped with internal thread 561, counterbore 562, smooth
Hole 563 and chassis 564.Look nut 56 is rotated, look nut 56 is screwed in by 542 end external screw thread of pull rod by internal thread 561
On 543, by the continuous precession of screw thread, slow compressing secure valve spring 55, after spring-compressed certain distance, internal thread 561
Depart from external screw thread 543 and screw, and screw thread is screwed with the screw thread entrance on 52 inner wall of valve pocket on chassis 564, continues to rotate pressure regulation
Nut 56, the further compressing secure valve spring 55 of look nut 56, so that the precompression of regulation safety valve spring 55, that is, set up peace
The rated pressure value of full valve spring 55.Since the rigidity of safety valve spring 55 is larger, pass through internal thread 561 and external screw thread 543
Screw, primary compression is carried out to safety valve spring 55, facilitates the installation of safety valve spring 55, and substantially reduce valve pocket 52
Length, saves space so that the structure of pressure three-purpose valve is compacter.In addition, when screw thread on chassis 564 and 52 inner wall of valve pocket
On screw thread enter and screw after, internal thread 561 and external screw thread 543 depart from again to be screwed, the movement of spring base 54 and look nut 56
No longer interfere, when ensure that safety valve 5 works, its spool 51 can 54 compressing secure valve spring 55 of push the spring seat.
As depicted in figs. 1 and 2, the safety valve 5 is equipped with damping cavity s, and damping cavity s is by spool 51, valve pocket 52 and end
The space that 53 profile of lid surrounds.Highly pressurised liquid from hydraulic prop column chamber enters damping by damping 58 and spool bore r
Chamber s, and the end face of the spool 51 of damping cavity s is acted on, and offset the pressure that part spool front end face highly pressurised liquid produces.So as to
So that the axial compressive force that spool 51 is subject to reduces, reduce the pressure that safety valve spring 55 is born, and safety valve spring 55 must
The rigidity and radial dimension needed reduces, so as to reduce the design difficulty of safety valve spring 55.In addition, highly pressurised liquid passes through damping
58, additionally aid the stabilization of the movement of spool 51.
In order to strengthen the sealing performance of pressure three-purpose valve, important sealing station is provided with sealing element.Pressure three-purpose valve
Sealed between hydraulic prop by sealing ring V 95, check valve 3 is formed by one-way valve seat 33 and steel ball 34 and sealed, and is unloaded
Carry valve 4 and sealing is formed by II t of baffle ring inside valve pad I 42 and left valve cylinder 1.Pass through sealing ring III between valve pocket 52 and right valve cylinder 2
93 sealings, are sealed by sealing ring IV 94 between spool guiding valve section 511 and valve pocket 52, passed through between spool guide section 514 and valve pocket 52
Sealing ring II 92 seals, and is sealed between end cap 53 and valve pocket 52 by valve pad II 57, by close between spool mandril section 516 and end cap 53
Seal I 91 seals.
Pressure three-purpose valve is the core component of hydraulic prop, and hydraulic prop controls hydraulic pressure by pressure three-purpose valve
The setting prop of pillar, just support, carrying overflow and unloading prop drawing process, its course of work are as follows：
Setting prop, just support stage：First by the fluid injection valve body 31 of the fluid injection gun insertion pressure three-purpose valve of hydraulic prop, hang
Good lock sleeve, plate move fluid injection gun spanner, force mandril to move axially, and jack up steel ball 34 and open check valve 3, the high pressure from pumping plant
Liquid will pass through liquid injection hole a and enter check valve 3, and portal I c into I b of hole, screw rod by the screw rod inside connecting screw 6, inject
I d of valve chamber inside pressure three-purpose valve, and entered by the I e through holes of outlet on left 1 side wall of valve cylinder inside hydraulic prop, make liquid
Pressure pillar rises rapidly.After hydraulic prop contacts top beam, top plate produces hydraulic prop certain resistance, on hydraulic prop stops
Rise, pressure steeply rises in hydraulic prop, and final hydraulic prop cavity pressure is equal to pump station pressure, and obtains certain
Setting load.Then fluid injection gun is removed, check valve 3 is closed, and is completed setting prop, is just supportted process.I A of restriction, restriction during this
II B and III C of restriction are in closure state.
Carry the overflow stage：Top plate can apply shock loading or cyclic loading to hydraulic prop in Bracing Process,
When load value is less than the working resistance of hydraulic prop, intracavitary operation medium is more than peace in the hydraulic coupling on spool 51
The pretightning force of full valve spring 55, will force and is moved outside spool 51, and compressing secure valve spring 55, and damping cavity s is compressed therewith.Resistance
Liquid medium in Buddhist nun's chamber s, enters piston chamber Q by spool bore r, damping 58.At this time, with the increase of load, I A of restriction
Gradually open, and II B of restriction and III C of restriction are still within closure state.When load value is more than the work of hydraulic prop
When making resistance, spool continues outer shifting, and II B of restriction and III C of restriction are gradually opened.At this time, from hydraulic prop column
The highly pressurised liquid of chamber, by exporting I e, screw rod portals II g, piston chamber Q, fluid hole h, I A of restriction, ante-chamber into II f of hole, screw rod
I, II B of restriction, lumen j, III C of restriction, drainage lumens K, back cavity L, liquid outlet q, exocoel m and gap n discharge pressure three-purpose valves
In vitro, pillar snapback, column cavity pressure reduce.When acting on the hydraulic coupling on spool 51 by less than the bullet of safety valve spring 55
During power, spool 51 moves back, and restriction is closed.So as to ensure that cavity pressure fluctuates near safety valve rated operating pressure all the time,
Realize that constant-resistance supports.
Unload the prop drawing stage：In the single hydraulic prop back time receiving, be inserted into the unloading port of right valve cylinder 2, plate by unloading hand handle
Dynamic unloading hand handle, power of the generation one along pressure three-purpose valve axial direction, acts on 52 end of valve pocket, passes through valve pocket 52 and compresses unloaded spring
41, the connecting screw 6 being connected through a screw thread at this time with valve pocket 52 is outside between II t of inside baffle ring of shifting, valve pad I 42 and left valve cylinder 1
Band is opened, and feather valve 4 is opened, and hydraulic prop intracavitary working media sprays into goaf, monomer liquid by left valve cylinder 1
Press pillar conducting oneself with dignity and snapback under action of reset spring, after hydraulic prop is fully retracted, closes feather valve 4, complete to unload
Carry prop drawing process.
The basic principles, main features and advantages of the invention have been shown and described above.The technical staff of the industry should
Understand, the present invention is not limited to the above embodiments, and the above embodiments and description only describe the base of the present invention
Present principles, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these change and
Improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention is by appended claims and its equivalent
Thing defines.
Claims (6)
1. the colliery pressure three-purpose valve based on micro forming spool and special-shaped valve chamber, including left valve cylinder (1), right valve cylinder (2), check valve
(3), feather valve (4), safety valve (5) and connecting screw (6), are connected through a screw thread, unidirectionally between left valve cylinder (1) and right valve cylinder (2)
Valve (3), feather valve (4) and safety valve (5) are sequentially arranged at the inside of left valve cylinder (1) and right valve cylinder (2), check valve (3) and peace
Connected between full valve (5) by connecting screw (6), feather valve (4) is installed between check valve (3) and safety valve (5)；The peace
Full valve (5) include spool (51), valve pocket (52), end cap (53), spring base (54), safety valve spring (55), look nut (56),
Valve pad II (57) and damping (58), the valve pocket (52) are installed on right valve cylinder (2) inside by cylindrical pair, and valve pocket (52) is with being connected
Screw rod is connected through a screw thread between (6), and spool (51) is installed on valve pocket (52) inside by cylindrical pair, and look nut (56) passes through spiral shell
Line is installed on valve pocket (52) end, is connected between spring base (54) and spool (51) by the way that ball is secondary, the both ends of safety valve spring (55)
Be pressed on respectively on spring base (54) and look nut (56), valve pad II (57) be installed on valve pocket (52) on, and with end cap (53)
It is in close contact, it is internal that damping (58) is installed on spool (51), it is characterised in that：
The spool (51) is by guiding valve section (511), valve port I section (512), valve port II section (513), guide section (514), damping section
(515) and mandril section (516) forms, and the outer surface of wherein guiding valve section (511), guide section (514) and mandril section (516) is equipped with
Micro forming (517)；Guiding valve section (511), valve port I section (512), valve port II section (513) and guide section (514) and valve pocket (52) interior table
The diameter for the cylindrical pair that face coordinates is identical；
Spool (51) and valve pocket (52), which coordinate, forms special-shaped valve chamber structure, and special-shaped valve chamber includes restriction I (A), restriction II
(B), restriction III (C), piston chamber (Q), ante-chamber (i), lumen (j), drainage lumens (K) and back cavity (L), restriction I (A) are guiding valve
Restriction, restriction II (B) place's spool wall are made of one section of circular arc (u) and one section of long straight line (v), restriction II (B) place valve
Set wall is made of one section of short straight line (w) and one section of oblique line (x)；
The restriction III (C) is identical with the structure of restriction II (B), closing capacity and the restriction II (B) of restriction III (C)
Closing capacity it is equal, the closing capacity of restriction III (C) and restriction II (B) is all higher than the closing capacity of restriction I (A), and throttles
III (C) place of mouth is additionally provided with flow guiding structure (k).
2. the colliery pressure three-purpose valve according to claim 1 based on micro forming spool and special-shaped valve chamber, it is characterised in that：
The flow guiding structure (k) is conduction hole or drainage trough.
3. the colliery pressure three-purpose valve according to claim 1 based on micro forming spool and special-shaped valve chamber, it is characterised in that：
The radical length (y) of the back cavity (L) and axial length (z) equal length, the incoming side of back cavity (L) is equipped with liquid outlet
(q)。
4. the colliery pressure three-purpose valve according to claim 1 based on micro forming spool and special-shaped valve chamber, it is characterised in that：
The spring base (54) is made of base (541), pull rod (542) and external screw thread (543), and pull rod (542) is arranged on base
(541) center, external screw thread (543) are arranged on pull rod (542) end.
5. the colliery pressure three-purpose valve according to claim 1 based on micro forming spool and special-shaped valve chamber, it is characterised in that：
The look nut (56) is equipped with internal thread (561), counterbore (562), smooth hole (563) and chassis (564).
6. the colliery pressure three-purpose valve according to claim 1 based on micro forming spool and special-shaped valve chamber, it is characterised in that：
The safety valve (5) is equipped with damping cavity (s), and damping cavity (s) is to be surrounded by spool (51), valve pocket (52) and end cap (53) profile
Space.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611094299.7A CN106382125B (en) | 2016-12-01 | 2016-12-01 | Colliery pressure three-purpose valve based on micro forming spool and special-shaped valve chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611094299.7A CN106382125B (en) | 2016-12-01 | 2016-12-01 | Colliery pressure three-purpose valve based on micro forming spool and special-shaped valve chamber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106382125A CN106382125A (en) | 2017-02-08 |
| CN106382125B true CN106382125B (en) | 2018-05-08 |
Family
ID=57959931
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611094299.7A Active CN106382125B (en) | 2016-12-01 | 2016-12-01 | Colliery pressure three-purpose valve based on micro forming spool and special-shaped valve chamber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106382125B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114484014A (en) * | 2022-01-24 | 2022-05-13 | 浙江大学 | Liquid pump pressure control valve |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3701386A (en) * | 1970-12-11 | 1972-10-31 | Dresser Ind | Hydraulic drifter |
| US6823673B2 (en) * | 2003-03-27 | 2004-11-30 | Shinn Fu Corporation | Lower control system regulating the flow rate of lifting jack oil |
| CN2934573Y (en) * | 2006-03-01 | 2007-08-15 | 李�诚 | Hydraulic column with built-in hydraulic lock and safety valve |
| CN201606090U (en) * | 2010-02-09 | 2010-10-13 | 中国航天科技集团公司烽火机械厂 | Self-locking manual pilot valve |
| CN102748041B (en) * | 2012-07-04 | 2014-10-01 | 巨隆集团芜湖兴隆液压有限公司 | Nitrogen safety valve for hydraulic support in coal mine fully mechanized mining |
| CN203452810U (en) * | 2013-07-24 | 2014-02-26 | 三一重型装备有限公司 | Base valve, double-telescopic stand column, hydraulic support and engineering machine |
| CN103835734B (en) * | 2014-04-02 | 2016-05-11 | 安徽理工大学 | The large flow hydraulic pressure of hydraulic prop triple-use valve |
| CN206205913U (en) * | 2016-12-01 | 2017-05-31 | 安徽理工大学 | Colliery pressure three-purpose valve based on micro forming valve element and special-shaped valve pocket |
-
2016
- 2016-12-01 CN CN201611094299.7A patent/CN106382125B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN106382125A (en) | 2017-02-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206205913U (en) | Colliery pressure three-purpose valve based on micro forming valve element and special-shaped valve pocket | |
| DE60124859T2 (en) | SCREW COMPRESSOR WITH WATER INJECTION | |
| CN103256275B (en) | A kind of double acting Hydraulic Cylinder | |
| CN105221494A (en) | A kind of oil drives pressurized cylinder | |
| CN106678122B (en) | A kind of primary and secondary differential hydro cylinder | |
| CN105298981A (en) | Safe and reliable derrick lifting multistage cylinder | |
| CN103615270A (en) | Single hydraulic prop hydraulic pressure three-purpose valve | |
| CN107012867A (en) | A kind of hydraulic pile hammer | |
| CN106382125B (en) | Colliery pressure three-purpose valve based on micro forming spool and special-shaped valve chamber | |
| CN113074155A (en) | Negative pressure opening plug-in mounting type oil replenishing valve | |
| CN203742631U (en) | High-flow pressure triple-purpose valve of individual hydraulic prop | |
| CN106762917A (en) | A kind of big flow explosion-proof valve and method of work | |
| CN202746185U (en) | Dual-guide conical valve with non-metallic seal and hydraulic cylinder body structure thereof | |
| CN109236773A (en) | A kind of high-flow hydraulic control one-way valve | |
| CN103835734B (en) | The large flow hydraulic pressure of hydraulic prop triple-use valve | |
| CN103867524A (en) | Double-acting second-level hydraulic cylinder | |
| CN206309679U (en) | Super high pressure fluid unloading valve | |
| CN106969083A (en) | A kind of new undercarriage buffer | |
| CN206458665U (en) | A kind of primary and secondary differential hydro cylinder | |
| CN205078519U (en) | Oil drives pressurized cylinder | |
| CN206438993U (en) | A kind of binary channels is bored and develops integrated device | |
| CN109630493A (en) | A kind of hydraulic pressure combination valve based on micro forming spool and special-shaped valve chamber | |
| CN206915656U (en) | The jacking oil pump of anti-oil return | |
| CN204900962U (en) | Sealed relief valve of multi -level buffer formula bulb fine setting | |
| CN204901049U (en) | Choke valve for well drilling with prevent asymmetric erosion and vibration proof fracture ability |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230201 Address after: Room 3125, Building 15, Electromechanical Industrial Park, No. 767, Yulan Avenue, High-tech Zone, Hefei, Anhui Province, 230000 Patentee after: Hefei Ronghong Technology Co.,Ltd. Address before: 232001 Anhui Province, Huainan city tianjia'an District Shungeng Road No. 168 Patentee before: Anhui University of Science and Technology |
|
| TR01 | Transfer of patent right |