CN106958686A - A kind of gas control air bleeding valve - Google Patents
A kind of gas control air bleeding valve Download PDFInfo
- Publication number
- CN106958686A CN106958686A CN201710341895.9A CN201710341895A CN106958686A CN 106958686 A CN106958686 A CN 106958686A CN 201710341895 A CN201710341895 A CN 201710341895A CN 106958686 A CN106958686 A CN 106958686A
- Authority
- CN
- China
- Prior art keywords
- valve
- sealed
- end cap
- valve core
- air bleeding
- 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.)
- Granted
Links
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/42—Valve seats
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/0413—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded in the form of closure plates
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
Abstract
The present invention provides a kind of gas control air bleeding valve, including valve body, left end cap, right end cap, push rod, piston and sealed valve core, push rod is inserted into valve body, one end of push rod is provided with piston, its other end is provided with sealed valve core, piston is arranged in right end cap, piston cooperatively forms control chamber with right end cap, left end cap cooperatively forms annular seal space with sealed valve core, spring is provided between left end cap and sealed valve core, sealed valve core is arranged at the valve port in valve body and controls the opening and closing of valve port, valve inner is separated into inlet chamber and discharge chamber by sealed valve core, sealed valve core is provided with passage, passage connects inlet chamber with annular seal space, what the present invention effectively utilized sealed valve core and valve body cooperatively forms the cavity being communicated or sealed, by setting passage on sealed valve core, reduce the operating pressure of spring, exhaust valve opening is set to be greatly improved with the sensitivity sealed and reliability, with simple in construction, it is compact, the outstanding advantages such as long service life.
Description
Technical field
The present invention relates to pressure vessel air bleeding valve technical field, more particularly, to a kind of gas control air bleeding valve.
Background technology
Existing pneumatic control air bleeding valve is generally piston cylinder operator, and piston is arranged on the valve element of air bleeding valve, from air bleeding valve
Control interface, which is passed through compressed air, makes piston both sides produce pressure differential, and piston and valve element are realized under the collective effect of back-moving spring
Move left and right so that connecting or closing inside the exhaust outlet of air bleeding valve and pressure vessel, realize exhaust pressure relief.Due to work
One side interface of plug is connected to pressure vessel, and pressure is higher, to ensure the smooth unlatching of air bleeding valve, the pressure or spring of compressed air
Reset force reduces exhaust valve opening and the sensitivity of sealing often than larger, but while increasing opening force；Most air bleeding valves
Two ends be connected to a pneumatic control interface, be passed through compressed air successively to realize air bleeding valve by pneumatic control interface
Be turned on and off, although realize the purpose of exhaust but whole exhaust structure be relative complex；To ensure to connect inside air bleeding valve
Sealing ring is installed on sealing between mouthful, the valve element of air bleeding valve, sealing ring and valve body contact, sealing ring when valve element is moved left and right
Active force between valve body is bigger, and the abrasion of sealing ring is more violent, with the sealing property of the abrasion air bleeding valve of sealing ring
Drop, service life is also decreased.
The content of the invention
The technical problem to be solved in the present invention is：The problem of existing for prior art, should there is provided a kind of gas control air bleeding valve
Exhaust structure is simple, convenient disassembly, by changing the structure of valve body and valve element with the seal pressure of balanced seal valve element both sides,
The power needed for the unlatching and sealing of air bleeding valve is reduced, exhaust valve opening sensitivity is improved, extends the life-span of air bleeding valve.
The technical problem to be solved in the present invention is realized using following technical scheme：A kind of gas control air bleeding valve, including valve body,
Left end cap, right end cap, push rod, piston and sealed valve core, the push rod are inserted into valve body, and one end of the push rod is provided with work
Plug, its other end is provided with sealed valve core, and the left end cap and right end cap are connected with valve body two ends respectively, and the piston is arranged on the right side
In end cap, the piston cooperatively forms control chamber with right end cap, and the left end cap cooperatively forms annular seal space with sealed valve core, described
It is provided between left end cap and sealed valve core at spring, the valve port that the sealed valve core is arranged in valve body and controls opening for valve port
Close, valve inner is separated into inlet chamber and discharge chamber by the sealed valve core, and the sealed valve core is provided with passage, described logical
Stomata connects inlet chamber with annular seal space.
Preferably, the side of described valve body is sequentially provided with exhaust port, pressure vessel interface and control interface.
Preferably, described pressure vessel interface is connected with inlet chamber, and exhaust port is connected with discharge chamber, control interface with
Control chamber is connected.
Preferably, described control interface is connected with air compression plant.
Preferably, described sealed valve core end be provided with annular groove, spring housing be mounted in annular groove in, sealed valve core it is another
End end face is embedded with gasket seal.
Preferably, described valve port is annular protrusion, and the cross section of annular protrusion is trapezoidal.
Preferably, the external diameter of described piston is more than the diameter of sealed valve core.
Compared with prior art, the beneficial effects of the invention are as follows：By opening up passage on sealed valve core, passage will
Pressure inside pressure vessel is incorporated into the reset side of sealed valve core, makes the pressure of sealed valve core both sides equal, sealed valve core
The resistance of reseting movement reduces, so that the sensitivity of exhaust valve opening or sealing is improved, while can also reduce on valve element
Sealing ring and valve body between abrasion, the reliability and service life of air bleeding valve greatly improve, and only need to set one it is pneumatic
Control interface just can realize the unlatching and sealing of air bleeding valve, simple in construction, and a left side for air bleeding valve internal cavity is cooperatively formed with valve body
Right end cap is locked on valve body by bolt, is easy to dismounting and easy to process.
Brief description of the drawings
Fig. 1 is the structure sectional view of closed mode of the present invention.
Fig. 2 is the structure sectional view of opening of the present invention.
Fig. 3 is the structure sectional view of sealed valve core of the present invention.
Marked in figure：1- valve bodies, 2- left end caps, 3- right end caps, 4- push rods, 5- pistons, 6- sealed valve cores, 7- control chambers,
8- inlet chambers, 9- discharge chambers, 10- annular seal spaces, 11- springs, 12- passages, 13- valve ports, 14- exhaust ports, 15- pressure vessels
Interface, 16- control interfaces, 17- annular grooves, 18- gasket seals.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, below in conjunction with the accompanying drawings and specific implementation
The present invention is described in detail for example.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, not
For limiting the present invention.
A kind of gas control air bleeding valve as shown in Fig. 1 ~ 3, it includes valve body 1, left end cap 2 and right end cap 3, left end cap 2 and the right side
End cap 3 is locked on valve body 1 by bolt respectively, and push rod 4 is assemblied in the chute of valve body 1, and one end of push rod 4 is provided with piston
5, the other end of push rod 4 is provided with sealed valve core 6, and the side wall of the piston 5 is provided with seal groove, seal groove that to be provided with O shapes close
Seal, the left end cap 2 and the formation annular seal space 10 of sealed valve core 6, right end cap 3 are set with the formation control chamber of valve body 1, sealed valve core 6
It is against in the presence of the inside of valve body 1 and by spring 11 on valve port 13, the cross section of the valve port 13 is trapezoidal, trapezoidal cross-section
Valve port 13 ensure sealing effectiveness while can also effectively reduce the contact area of sealing surface, it is to avoid in pressure vessel
When gas contains liquid vapour, liquid vapour can make have certain adhesion between valve port 13 and the end face of sealed valve core 6, and this glues
Attached power can influence sealed valve core to hold 6 sensitivity opened, and valve body 1 is separated into inlet chamber and discharge chamber by the sealed valve core 6, control
Interface 16 is connected with air compression plant, air compression plant supply gases at high pressure, in the presence of gases at high pressure and spring 11
Piston 5 can be moved back and forth in control chamber 7.
The normal operation state of air bleeding valve is sealing state, as shown in figure 1, the air compression dress that control interface 16 is connected
Put and do not work, the gases at high pressure in pressure vessel or pipeline enter inlet chamber 8 by pressure vessel interface 15, then pass through sealing valve
Passage 12 on core 6 enters annular seal space 10, makes annular seal space 10 identical with the gas pressure of inlet chamber 8, now spring 11 is only needed
Overcome the frictional resistance between sealed valve core 6 and valve body 1, just the gasket seal 18 on sealed valve core 6 can be pressed on valve port 13
On, so that inlet chamber 8 is not connected with discharge chamber 9, sealed valve core 6 makes exhaust valve sealing, pressure vessel or pipeline pressurize.
When air bleeding valve is opening, as shown in Fig. 2 the air compression plant work that control interface 16 is connected, compression
Air afterwards enters control chamber 7, and compressed air promotes piston 5 to be moved to the left, and sealed valve core 6 is disengaged with valve port 13, air inlet
Chamber 8 is connected with discharge chamber 9, and the gases at high pressure in pressure vessel or pipeline enter inlet chamber 8 by pressure vessel interface 15, then lead to
Cross discharge chamber 9 to be discharged into air through exhaust port 14, realize the purpose of pressure vessel or pipeline Quick air-discharge pressure release, when pressure holds
When device or manifold pressure drop to safety value, pressure air compression set is stopped, and the sealed valve core 6 of air bleeding valve is in spring 11
In the presence of be reset to sealing state, pressure vessel or pipeline pressurize.Spring needed for whole sealing or opening process spring 11
Power is smaller, and the service life of the sensitivity and air bleeding valve of exhaust valve opening or sealing is effectively lifted, and valve body 1 is interior
Parts are assemblied in by way of inserting inside valve body 1, and the two ends of valve body 1, by left and right end cap lock sealing, are somebody's turn to do by bolt
The structure not only cavity easy to process being not required in the inside processed complex of valve body 1 is planted, and dismounting and quick-wear part change convenient.
Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the invention, it is noted that be all
Any modification, equivalent and improvement for being made within the spirit and principles in the present invention etc., should be included in the guarantor of the present invention
Within the scope of shield.
Claims (7)
1. a kind of gas control air bleeding valve, including valve body（1）, left end cap（2）, right end cap（3）, push rod（4）, piston（5）And sealing valve
Core（6）, the push rod（4）It is inserted into valve body（1）It is interior, the push rod（4）One end be provided with piston（5）, its other end is provided with close
Seal valve element（6）, it is characterised in that：The left end cap（2）And right end cap（3）Respectively with valve body（1）Two ends are connected, the piston
（5）It is arranged on right end cap（3）It is interior, the piston（5）With right end cap（3）Cooperatively form control chamber（7）, the left end cap（2）With
Sealed valve core（6）Cooperatively form annular seal space（10）, the left end cap（2）With sealed valve core（6）Between be provided with spring（11）, it is described
Sealed valve core（6）It is arranged on valve body（1）Interior valve port（13）Place and control valve port（13）Opening and closing, the sealed valve core（6）Will
Valve body（1）Inside is separated into inlet chamber（8）And discharge chamber（9）, the sealed valve core（6）It is provided with passage（12）, it is described logical
Stomata（12）By inlet chamber（8）And annular seal space（10）Connection.
2. gas control air bleeding valve according to claim 1, it is characterised in that：Described valve body（1）Side be sequentially provided with row
Gas interface（14）, pressure vessel interface（15）And control interface（16）.
3. gas control air bleeding valve according to claim 2, it is characterised in that：Described pressure vessel interface（15）With inlet chamber
（8）Connection, exhaust port（14）With discharge chamber（9）Connection, control interface（16）With control chamber（7）Connection.
4. gas control air bleeding valve according to claim 2, it is characterised in that：Described control interface（16）It is connected with air pressure
Compression apparatus.
5. gas control air bleeding valve according to claim 1, it is characterised in that：Described sealed valve core（6）End is provided with annular
Groove（17）, spring（11）It is sleeved on annular groove（17）In, sealed valve core（6）Other end end face be embedded with gasket seal（18）.
6. gas control air bleeding valve according to claim 1, it is characterised in that：Described valve port（13）For annular protrusion, annular
Raised cross section is trapezoidal.
7. gas control air bleeding valve according to claim 1, it is characterised in that：Described piston（5）External diameter be more than sealing valve
Core（6）Diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710341895.9A CN106958686B (en) | 2017-05-16 | 2017-05-16 | Pneumatic control exhaust valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710341895.9A CN106958686B (en) | 2017-05-16 | 2017-05-16 | Pneumatic control exhaust valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106958686A true CN106958686A (en) | 2017-07-18 |
| CN106958686B CN106958686B (en) | 2023-04-07 |
Family
ID=59482444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710341895.9A Active CN106958686B (en) | 2017-05-16 | 2017-05-16 | Pneumatic control exhaust valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106958686B (en) |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107363239A (en) * | 2017-09-05 | 2017-11-21 | 广东顺德固德威精密机械有限公司 | A kind of fast shot disabling mechanism of magnesium alloy cold-chamber die casting machine |
| CN107554511A (en) * | 2017-09-22 | 2018-01-09 | 眉山中车制动科技股份有限公司 | A kind of hand relieving valve and stress reduction device |
| CN107570498A (en) * | 2017-10-23 | 2018-01-12 | 中车长江车辆有限公司 | A kind of brake pipe cleaner for inner wall and cleaning method |
| CN108560437A (en) * | 2018-05-23 | 2018-09-21 | 中国矿业大学(北京) | A kind of shockproof deceleration strip |
| CN108591551A (en) * | 2018-07-17 | 2018-09-28 | 阜宁县中洲阀门有限公司 | A kind of forged steel fuel feeding valve |
| CN109632403A (en) * | 2018-12-06 | 2019-04-16 | 成都华科阀门制造有限公司 | A kind of gas collecting device |
| CN109774987A (en) * | 2019-03-19 | 2019-05-21 | 北京电子科技职业学院 | Integrated snifting valve and gas ejecting system |
| CN110145626A (en) * | 2019-07-01 | 2019-08-20 | 钱晓浪 | A kind of Multifunctional balance valve |
| CN111003479A (en) * | 2019-12-20 | 2020-04-14 | 济南海能仪器股份有限公司 | Feeding slide block and full-automatic sample feeding device |
| ES2785105A1 (en) * | 2019-04-01 | 2020-10-05 | Altran Innovacion S L | Discharge valve (Machine-translation by Google Translate, not legally binding) |
| CN112091181A (en) * | 2020-09-07 | 2020-12-18 | 东风汽车股份有限公司 | Sand shooting exhaust pinch valve of core making machine |
| CN112664691A (en) * | 2020-12-28 | 2021-04-16 | 宁波新佳行自动化工业有限公司 | Special multi-station pressure reducing valve for air compressor |
| CN114352781A (en) * | 2022-03-17 | 2022-04-15 | 中车太原机车车辆有限公司 | Air supply adjusting valve for railway freight car |
| CN114367551A (en) * | 2020-10-15 | 2022-04-19 | 北京京诚瑞信长材工程技术有限公司 | Water distribution valve group and multi-channel water cooling device for long-material high-quality special steel production line |
| CN116085524A (en) * | 2023-02-10 | 2023-05-09 | 北京星河动力装备科技有限公司 | Pneumatic valve and carrier rocket |
| CN116104981A (en) * | 2023-02-10 | 2023-05-12 | 北京星河动力装备科技有限公司 | Pneumatic valve and carrier rocket |
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| CN201526725U (en) * | 2009-11-10 | 2010-07-14 | 东台市东方船舶装配有限公司 | Pneumatic control valve |
| CN201851753U (en) * | 2010-10-25 | 2011-06-01 | 浙江万向精工有限公司 | Improved ESP (Electronic Stability Program) delivery valve |
| CN103256395A (en) * | 2013-05-25 | 2013-08-21 | 铜陵市三圆特种铸造有限责任公司 | Modularization spool structure of large-flow balance-type pressure regulating value |
| CN204004721U (en) * | 2014-08-12 | 2014-12-10 | 四川兴良川深冷科技有限公司 | Autocontrol valve and control implementation system for the vehicle-mounted low temperature cylinder of LNG Liquefied natural gas |
| CN204254000U (en) * | 2014-11-19 | 2015-04-08 | 浙江科海仪表有限公司 | Pneumatic piston high thrust repid cut-off valve |
| DE102014012680A1 (en) * | 2014-08-22 | 2016-02-25 | Wabco Gmbh | Pneumatic circuit for car air suspension system |
| CN206694642U (en) * | 2017-05-16 | 2017-12-01 | 眉山中车制动科技股份有限公司 | A kind of gas control air bleeding valve |
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| GB823657A (en) * | 1956-12-03 | 1959-11-18 | Bendix Westinghouse Automotive | Fluid pressure brake valves |
| GB1461449A (en) * | 1973-03-02 | 1977-01-13 | Knorr Bremse Gmbh | Pressure regulating device for a load dependent braking pressure regulator |
| DE4126120A1 (en) * | 1991-08-07 | 1993-02-11 | Teves Gmbh Alfred | Brake pressure control for hydraulic vehicle braking system - has throttle element to create dynamic pressure in return flow pipe |
| JP2006017302A (en) * | 1997-04-11 | 2006-01-19 | Kawasaki Safety Service Industries Ltd | Quick opening pressure control valve and fire extinguishing device using the same |
| JP2006046415A (en) * | 2004-08-02 | 2006-02-16 | Smc Corp | Vacuum pressure regulating valve |
| CN201526725U (en) * | 2009-11-10 | 2010-07-14 | 东台市东方船舶装配有限公司 | Pneumatic control valve |
| CN201851753U (en) * | 2010-10-25 | 2011-06-01 | 浙江万向精工有限公司 | Improved ESP (Electronic Stability Program) delivery valve |
| CN103256395A (en) * | 2013-05-25 | 2013-08-21 | 铜陵市三圆特种铸造有限责任公司 | Modularization spool structure of large-flow balance-type pressure regulating value |
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Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107363239A (en) * | 2017-09-05 | 2017-11-21 | 广东顺德固德威精密机械有限公司 | A kind of fast shot disabling mechanism of magnesium alloy cold-chamber die casting machine |
| CN107554511A (en) * | 2017-09-22 | 2018-01-09 | 眉山中车制动科技股份有限公司 | A kind of hand relieving valve and stress reduction device |
| CN107554511B (en) * | 2017-09-22 | 2024-01-23 | 眉山中车制动科技股份有限公司 | Manual relief valve and pressure relief device |
| CN107570498A (en) * | 2017-10-23 | 2018-01-12 | 中车长江车辆有限公司 | A kind of brake pipe cleaner for inner wall and cleaning method |
| CN108560437A (en) * | 2018-05-23 | 2018-09-21 | 中国矿业大学(北京) | A kind of shockproof deceleration strip |
| CN108591551A (en) * | 2018-07-17 | 2018-09-28 | 阜宁县中洲阀门有限公司 | A kind of forged steel fuel feeding valve |
| CN108591551B (en) * | 2018-07-17 | 2023-09-19 | 江苏应流机械制造有限责任公司 | Forged steel oiling valve |
| CN109632403A (en) * | 2018-12-06 | 2019-04-16 | 成都华科阀门制造有限公司 | A kind of gas collecting device |
| CN109632403B (en) * | 2018-12-06 | 2024-02-06 | 成都华科阀门制造有限公司 | Gas collection device |
| CN109774987A (en) * | 2019-03-19 | 2019-05-21 | 北京电子科技职业学院 | Integrated snifting valve and gas ejecting system |
| CN109774987B (en) * | 2019-03-19 | 2024-03-08 | 北京电子科技职业学院 | Integrated air injection valve and air injection system |
| ES2785105A1 (en) * | 2019-04-01 | 2020-10-05 | Altran Innovacion S L | Discharge valve (Machine-translation by Google Translate, not legally binding) |
| CN110145626A (en) * | 2019-07-01 | 2019-08-20 | 钱晓浪 | A kind of Multifunctional balance valve |
| CN111003479A (en) * | 2019-12-20 | 2020-04-14 | 济南海能仪器股份有限公司 | Feeding slide block and full-automatic sample feeding device |
| CN112091181A (en) * | 2020-09-07 | 2020-12-18 | 东风汽车股份有限公司 | Sand shooting exhaust pinch valve of core making machine |
| CN112091181B (en) * | 2020-09-07 | 2022-04-12 | 东风汽车股份有限公司 | Sand shooting exhaust pinch valve of core making machine |
| CN114367551A (en) * | 2020-10-15 | 2022-04-19 | 北京京诚瑞信长材工程技术有限公司 | Water distribution valve group and multi-channel water cooling device for long-material high-quality special steel production line |
| CN114367551B (en) * | 2020-10-15 | 2024-03-26 | 北京京诚瑞信长材工程技术有限公司 | Water diversion valve group and multichannel water cooling device for long-material excellent special steel production line |
| CN112664691A (en) * | 2020-12-28 | 2021-04-16 | 宁波新佳行自动化工业有限公司 | Special multi-station pressure reducing valve for air compressor |
| CN114352781A (en) * | 2022-03-17 | 2022-04-15 | 中车太原机车车辆有限公司 | Air supply adjusting valve for railway freight car |
| CN116085524A (en) * | 2023-02-10 | 2023-05-09 | 北京星河动力装备科技有限公司 | Pneumatic valve and carrier rocket |
| CN116104981A (en) * | 2023-02-10 | 2023-05-12 | 北京星河动力装备科技有限公司 | Pneumatic valve and carrier rocket |
| CN116104981B (en) * | 2023-02-10 | 2023-11-14 | 北京星河动力装备科技有限公司 | Pneumatic valve and carrier rocket |
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| CN106958686B (en) | 2023-04-07 |
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