CN205689854U - A kind of pressure maintaining valve for pneumatic actuator - Google Patents
A kind of pressure maintaining valve for pneumatic actuator Download PDFInfo
- Publication number
- CN205689854U CN205689854U CN201620466303.7U CN201620466303U CN205689854U CN 205689854 U CN205689854 U CN 205689854U CN 201620466303 U CN201620466303 U CN 201620466303U CN 205689854 U CN205689854 U CN 205689854U
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- electric magnet
- maintaining valve
- sleeve
- pressure maintaining
- piston
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- 239000007789 gas Substances 0.000 description 19
- 230000033001 locomotion Effects 0.000 description 11
- 230000000694 effects Effects 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 7
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000008859 change Effects 0.000 description 5
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- 239000010408 film Substances 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000013475 authorization Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
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Abstract
The utility model discloses a kind of pressure maintaining valve for pneumatic actuator, this pressure maintaining valve being used for pneumatic actuator includes housing, piston, flexible member, electric magnet, balancing air holes, repulsion between elastic force and the electric magnet of flexible member together decides on the threshold value of pressure maintaining valve, by the air pressure in piston perception gas circuit, when air pressure exceedes threshold value, gas discharges at balancing air holes, the speed of release is determined by the air pressure in gas circuit, then the air pressure in gas circuit is made to keep stable, external presentation is that pneumatic drive mechanisms speed uniformly or exerts a force constant, can also be with the repulsion of oversampling circuit regulating magnet during running, thus regulate speed and the force of pneumatic drive mechanisms.
Description
Technical field
This utility model relates to air-operated solenoid valve part field, particularly to a kind of voltage stabilizing for pneumatic actuator
Valve.
Background technology
Pneumatic Transmission, the pneumatic drive mechanisms especially controlled by air-operated solenoid valve, because of its good suitability, can realize
The straight line of stepless speed regulation and revolution work, be swift in response, agile, regulation and control convenience, low cost, the advantage such as easy to maintenance, gets over
Get over and favored by people, especially in straight line control, be no matter in response speed or running speed all considerably beyond
Motor-driven, therefore Pneumatic Transmission is also largely used to all kinds of automatization's control systems.
But owing to air has compressibility, during load change, stationarity is slightly worse, a transmission process supercharging always often adds
Speed process or supercharging are accelerated to stop supercharging again from moderating process, apply a braking in outside so generally requiring during Pneumatic Transmission
Pad, consumes kinetic energy by clashing into, and mechanism can have been damaged by a certain extent, and the vibrations simultaneously clashing into generation can be necessarily
The stability of mechanism is affected in degree.
The Chinese patent that Authorization Notice No. is CN104265734A, the application day for announcing is on January 7th, 2015 discloses one
Buffer air cylinder, it is provided with flexure strip at piston on the end face of cylinder cap end cap, cylinder head be provided with receiving damper piston and with
The cushion hole that damper piston outer wall contacts, the two ends of damper piston connect piston and piston rod respectively, and damper piston is with gentle
Punching is all flexible material, and the essence of this buffer air cylinder is, utilizes the elastic construction of flexure strip and cushion hole and buffering
Piston and stopper rod are played the effect of forced deceleration braking by the rubbing action of plug.
The motion to piston to a certain extent of this mode has played cushioning effect, allows piston movement show as speed in outside
Degree change is less violent, but the mode of this forced deceleration braking utilizing rub strong and elastic force can make cylinder in transmission
During need to overcome elastic force and the frictional force of extra increase, bigger to air pump pressure requirements, and under high-speed motion,
Friction can produce substantial amounts of heat, affects mechanism performance.
Authorization Notice No. is that the Chinese patent of CN204922124A discloses a kind of motorized adjustment formula Self-pressure stabilizing valve, this
Pressure maintaining valve includes valve seat, spool, valve gap, lower valve rod, upper valve rod, startup thin-film heads assembly and motorized adjustment assembly, inside valve seat
Be provided with into strong chamber and go out chamber, enter chamber and go out between chamber, to be provided with spool, the valve rod on spool by spring force control enter chamber with
Going out channel sized between chamber, venthole is arranged at the top of spool, between spool and venthole by motorized adjustment open and close pneumatic every
Film, enters chamber input gas, goes out chamber output gas, and spool and pneumatic diaphragm control output, keep air pressure output at one steadily
Regional value.But this pressure maintaining valve suffers from the drawback that；
What the most this pressure maintaining valve controlled is the input value of air pressure, the namely value from air pump to cylinder, but actually cylinder
What air pressure controlled that piston drive utilized is the accumulated value of cylinder interior gas, and it is to the accumulated value regulating power of cylinder interior gas not
Good, say, that the best to air-driven speed or force control ability.
The most electronic barrier film as the mode of overpressure gases overflow device be equivalent to increase a fixed size to gas circuit
Fixing venthole, automatic buffer control ability is poor, is unfavorable for the dynamic equilibrium of air pressure inside, and electronic barrier film is constantly
Moving process between meeting and valve export produce gap, then produce the situation of gas leakage, be unfavorable for life-time service.
Utility model content
The purpose of this utility model is to provide a kind of pressure maintaining valve for pneumatic actuator, has pneumatic actuator and exists
The effect that cylinder internal gas pressure is constant is kept during transmission or force.
Above-mentioned technical purpose of the present utility model has the technical scheme that
A kind of pressure maintaining valve for pneumatic actuator, is characterized in that: include housing, piston, flexible member, described housing
End face on be provided with for external air pressure interface, other end is internally provided with described flexible member, described flexible member
It is connected on piston；The sidewall of described housing is provided with and the balancing air holes of extraneous conducting, when the air pressure received is in threshold value
Time, described piston is between balancing air holes gentle crimping mouth.
Use said structure, after air pressure interface is connected with cylinder or air pressure valve, when cylinder or air pressure valve come into operation
Time, cylinder internal gas pressure increases, stopper rod setting in motion, and in order to keep stopper rod to continue motion, the air pressure in gas circuit can continue to increase,
Piston in pressure maintaining valve also can gradually be promoted therewith simultaneously, and after air pressure increases to above the threshold value that pressure maintaining valve sets,
The piston of pressure maintaining valve crosses balancing air holes, and gas discharges at balancing air holes, and in the speed of release and gas circuit, air pressure increases balance,
Then making the air pressure in gas circuit keep stable, external presentation is that pneumatic drive mechanisms speed uniformly or exerts a force constant；
When air pressure inside is less than after threshold value, by the elastic force effect of flexible member piston pushed back to again balancing air holes and
Between air pressure interface, make the air pressure in cylinder keep stable by continuous balance adjustment, just feed back to the effect of whole system
It is that the stopper rod of cylinder can do stable uniform motion.
More preferably: described piston connects the side of flexible member and is fixedly connected with the first electric magnet bracing frame, the
It is provided with the first electric magnet on one electric magnet bracing frame；Described enclosure interior is fixedly connected with second away from the end face of cylinder interface
Electric magnet bracing frame, the end of described second electric magnet bracing frame is provided with the second electric magnet, during energising, described first electric magnet
Repel each other with the second electric magnet.
Using said structure, piston and housing bottom be respectively arranged with the electric magnet repelled each other, and the magnetic force of electric magnet can be through
Regulated by electric-control system, say, that the threshold value of pressure maintaining valve can carry out step-less adjustment within the specific limits.
More preferably: described piston (2) connects the one end and described housing (1) having elastic component equipped with the second electromagnetism
One end of ferrum (5) connects by the extension sleeve (6) being made up of multiple sockets that cooperate.
Used said structure, the extension sleeve being successively socketed, owing to being joining by inside and outside circle between each sleeve
Close and connect, can move along a straight line along sleeve wall during stretching motion, both avoid centrally disposed electromagnet structure,
The stability of piston linear transmission can be kept again.
More preferably: described extension sleeve (6) includes end sleeve (61) and the rank of multiple mutually socket from large to small
Female connector cylinder (62), the upper and lower opening of described linking sleeve (62) is respectively equipped with turnover edge inwardly or outwardly, described outside
The cylindrical turning down edge and the big sleeve inner circle matched in clearance being socketed therewith, the set jacket casing that described linking sleeve (62) is maximum
Being connected on the inside of sleeve of the described end (61), sleeve of the described end (61), does not contains the outer rim that turnover is outside.
Used said structure, the when of due to converted products, processes axiality and flatness that a little area obtains
Precision want height more than large-area, so the sleeve of size socket coordinates more than in large-area with the form of outer rim and inwall
The form of outer wall coordinates the sliding linearity obtained to want height, and the setting of outer rim simultaneously is possible to prevent because certain sleeve is beyond row
Journey and situation about coming off occurs.
More preferably: described housing sidewall is provided with one for outconnector and the areole of ventilation.
More preferably: described flexible member is spring, described spring is wrapped in outside end sleeve.
Using said structure, the benefit of spring is to be socketed in sleeve outer layer, spring bullet in telescopic process simultaneously
Power change can keep preferable linear change.
More preferably: described housing is end cap away from the end of cylinder interface, and the end face of described end cap has ring-type
Ledge, the cylindrical of described ledge is provided with external screw thread, and described inner walls arranges female thread, described end cap and housing
Threaded.
Using said structure, this one end of housing that end cap is arranged need not good air-tightness, it is possible to by its end face
It is set to the end cap that can be threaded connection with, so that pressure maintaining valve has more preferable interchangeability.
More preferably: described end cap has ring-type prominent one end to be welded with described extension sleeve, described extension sleeve
Top bonding with piston.
Use said structure, owing to, during the continuous stretching motion of extension sleeve, holding between extension sleeve and end cap
It is easily generated and comes off, extension sleeve is welded on end cap and can ensure that so that it connects more firm, add service life.
In sum, this utility model has the advantages that
After air pressure interface is connected with cylinder or air pressure valve, when cylinder or air pressure valve come into operation when, gas in cylinder
Pressure increases, stopper rod setting in motion, and in order to keep stopper rod to continue motion, the air pressure in cylinder can continue to increase, and pressure maintaining valve is also simultaneously
Can gradually be promoted therewith, and after air pressure increases to above the threshold value that pressure maintaining valve sets, the piston of pressure maintaining valve is got over overbalance
Pore, gas can be discharged from balancing air holes, after air pressure inside is less than threshold value, by the elastic force effect of flexible member by piston
Again push back between balancing air holes gentle crimping mouth, make the air pressure in cylinder keep stable, instead by continuous balance adjustment
The effect being fed to whole system is exactly, the stopper rod of cylinder can do stable uniform motion or static apply to external world constant
Power.
Accompanying drawing explanation
Fig. 1 is the outside drawing of embodiment one；
Fig. 2 is the top view of embodiment one；
Fig. 3 is embodiment one Fig. 2 sectional view along A-A, it is shown that be not in the internal structure of the manostat of duty；
Fig. 4 is embodiment one Fig. 2 sectional view along A-A, it is shown that manostat exceedes setting threshold at cylinder interior atmospheric pressure value
Internal structure during value；
Fig. 5 is embodiment two Fig. 2 sectional view along A-A, it is shown that the manostat with end cap is being not in duty
Internal structure；
In figure, 1. housing；11. balancing air holes；12. air pressure interfaces；14. line outlets；2. piston；3. spring；4. the first electricity
Magnet；41. second electric magnet bracing frames；5. the second electric magnet；51. second electric magnet bracing frames；6. extension sleeve；61. end sets
Cylinder；62. linking sleeves；7. end cap.
Detailed description of the invention
Below in conjunction with accompanying drawing, this utility model is described in further detail.
This specific embodiment is only that it is not to restriction of the present utility model, ability to explanation of the present utility model
The present embodiment can be made after reading this specification by field technique personnel as required does not has the amendment of creative contribution, but
As long as all being protected by Patent Law in right of the present utility model.
Embodiment 1: a kind of pressure maintaining valve for pneumatic actuator, as Figure 1-4, pressure maintaining valve includes housing 1, balance
Pore 11, air pressure interface 12, line outlet 14, piston 2, balancing spring 3, the first electric magnet 4, the first electric magnet bracing frame 41, the
Two electric magnet 5, the second electric magnet bracing frame 51, extension sleeve 6, housing 1 front end face is provided with air pressure interface 12, is used for connecting gas
The gas outlet of pressure valve or air pressure electromagnetism is propped up on mouth and is connected to cylinder air inlet and props up on mouth, the sidewall of housing 1 is provided with flat
Weighing apparatus pore 11, is provided with piston 2, is in balancing air holes 11 gentle crimping mouth 12 without piston in the case of gas pressure 2 in housing 1
Between, the rear surface of piston 2 connects balancing spring 3, extension sleeve 6 and the first magnet holder, and the first magnet holder fills
Electric magnet, the opposite side of extension sleeve 6 and balancing spring 3 is had to be connected to the rear end face within housing 1, simultaneously in housing 1
Equipped with the second electric magnet 5 support on the rear end face in portion, and the second electric magnet 5 being contained on the second electromagnetism support, work as telescopic
When cylinder 6 is compressed to ultimate attainment, as shown in Figure 4, the first electric magnet 4 just touches less than the second electric magnet 5, at sidewall away from piston 2
Rear is provided with wire hole, and wire hole simultaneously works as the effect of aerofluxus and outlet.
In use, as long as the gas outlet that pressure maintaining valve is arranged on cylinder, air pressure valve or air pressure electromagnetism is propped up on mouth and connects
It is connected on cylinder air inlet and props up on mouth, with the repulsion of corresponding control circuit regulating magnet, the repulsion of electric magnet and the bullet of spring
Property power collectively forms the threshold value of pressure maintaining valve, and when the air pressure in cylinder exceedes threshold value, piston 2 is pushed to balancing air holes 11 rear,
Balancing air holes 11 is exitted, and air pressure returns threshold value once, and piston 2 moves toward reset direction, when lasting supercharging, and balancing air holes 11 meeting
With certain openings of sizes venting, to keep balance, the stepless regulated electric magnet of circuit in use can be passed through, the most surely
The threshold value of pressure valve, thus realize intracavity difference demand determine very much air pressure.
Embodiment two: as it is shown in figure 5, be with the difference of embodiment one, pressure maintaining valve housing 1 rear end face end cap
7 replace, and there is ring-type ledge on end cap 7 surface, and the cylindrical of ledge is provided with external screw thread, in housing 1 inwall is arranged
Screw thread, end cap 7 and housing 1 are threaded, and extension sleeve 6 is welded as a whole with end cap 7.
During use or during renewal part, end cap 7 is screwed out, change.
Claims (8)
1., for a pressure maintaining valve for pneumatic actuator, it is characterized in that: include housing (1), piston (2), flexible member, described
The end face of housing (1) is provided with for external air pressure interface (12), and other end is internally provided with described flexible member, institute
State flexible member to be connected on piston (2)；The sidewall of described housing (1) is provided with and the balancing air holes (11) of extraneous conducting.
A kind of pressure maintaining valve for pneumatic actuator the most according to claim 1, is characterized in that: described piston (2) is even
The side connecing flexible member is fixedly connected with the first electric magnet bracing frame (41), and the first electric magnet (4) bracing frame is provided with
One electric magnet (4)；The internal end face away from air pressure interface (12) of described housing (1) is fixedly connected with the second electric magnet bracing frame
(51), the end of described second electric magnet bracing frame (51) is provided with the second electric magnet (5), during energising, and described first electric magnet
(4) and the second electric magnet (5) repels each other.
A kind of pressure maintaining valve for pneumatic actuator the most according to claim 2, is characterized in that: described piston (2) is even
It is connected to one end of flexible member and described housing (1) connect equipped with one end of the second electric magnet (5) and have by multiple sets that cooperate
Connect the extension sleeve (6) of composition.
A kind of pressure maintaining valve for pneumatic actuator the most according to claim 3, is characterized in that: described extension sleeve
(6) end sleeve (61) and the linking sleeve (62) of multiple mutually socket from large to small are included, described linking sleeve (62) upper and lower
Opening is respectively equipped with turnover edge inwardly or outwardly, in the described outside cylindrical turning down edge and the big sleeve being socketed therewith
Circle matched in clearance, the sleeve that described linking sleeve (62) is maximum is socketed in the inside of sleeve of the described end (61), and the described end is overlapped
Cylinder (61) does not contains the outer rim that turnover is outside.
A kind of pressure maintaining valve for pneumatic actuator the most according to claim 4, is characterized in that: described flexible member is
Spring (3), described spring (3) is wrapped in end sleeve (61) outside.
A kind of pressure maintaining valve for pneumatic actuator the most according to claim 1, is characterized in that: described housing sidewall sets
It is equipped with one for outconnector and the areole of ventilation.
A kind of pressure maintaining valve for pneumatic actuator the most according to claim 4, is characterized in that: described housing (1) is remote
Replace with end cap (7) from the end of air pressure interface (12), the end face of described end cap (7) has ring-type ledge, described prominent
The cylindrical of part is provided with external screw thread, and described housing (1) inwall arranges female thread, described end cap (7) and housing (1) screw thread even
Connect.
A kind of pressure maintaining valve for pneumatic actuator the most according to claim 7, is characterized in that: described end cap (7) has
Ring-type prominent one end is welded with described extension sleeve (6), and the top of described extension sleeve (6) is bonding with piston (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620466303.7U CN205689854U (en) | 2016-05-19 | 2016-05-19 | A kind of pressure maintaining valve for pneumatic actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620466303.7U CN205689854U (en) | 2016-05-19 | 2016-05-19 | A kind of pressure maintaining valve for pneumatic actuator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205689854U true CN205689854U (en) | 2016-11-16 |
Family
ID=57262741
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620466303.7U Expired - Fee Related CN205689854U (en) | 2016-05-19 | 2016-05-19 | A kind of pressure maintaining valve for pneumatic actuator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205689854U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109048541A (en) * | 2018-08-22 | 2018-12-21 | 宁波高新区意川汽车零部件有限公司 | A kind of automobile gear burr remover |
| CN110056766A (en) * | 2019-04-19 | 2019-07-26 | 南京涵铭置智能科技有限公司 | A kind of gas storage element stable-pressure device and its method for stabilizing voltage |
| CN115582000A (en) * | 2022-12-09 | 2023-01-10 | 济南压缩机厂有限公司 | Multifunctional air compressor steam-water separation device |
-
2016
- 2016-05-19 CN CN201620466303.7U patent/CN205689854U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109048541A (en) * | 2018-08-22 | 2018-12-21 | 宁波高新区意川汽车零部件有限公司 | A kind of automobile gear burr remover |
| CN110056766A (en) * | 2019-04-19 | 2019-07-26 | 南京涵铭置智能科技有限公司 | A kind of gas storage element stable-pressure device and its method for stabilizing voltage |
| CN115582000A (en) * | 2022-12-09 | 2023-01-10 | 济南压缩机厂有限公司 | Multifunctional air compressor steam-water separation device |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161116 |
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| CF01 | Termination of patent right due to non-payment of annual fee |