CN102865402A - Linear-stroke pneumatic actuator - Google Patents
Linear-stroke pneumatic actuator Download PDFInfo
- Publication number
- CN102865402A CN102865402A CN2012103813832A CN201210381383A CN102865402A CN 102865402 A CN102865402 A CN 102865402A CN 2012103813832 A CN2012103813832 A CN 2012103813832A CN 201210381383 A CN201210381383 A CN 201210381383A CN 102865402 A CN102865402 A CN 102865402A
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- Prior art keywords
- cavity
- piston
- pneumatic actuator
- diaphragm
- piston rod
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- 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.)
- Pending
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- 229920001971 elastomer Polymers 0.000 claims description 29
- 239000005060 rubber Substances 0.000 claims description 29
- 239000004744 fabric Substances 0.000 claims description 23
- 239000002994 raw material Substances 0.000 claims description 15
- 239000003292 glue Substances 0.000 claims description 10
- 238000000227 grinding Methods 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 229920002943 EPDM rubber Polymers 0.000 claims description 8
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 8
- 229920000459 Nitrile rubber Polymers 0.000 claims description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 8
- NTXGQCSETZTARF-UHFFFAOYSA-N buta-1,3-diene;prop-2-enenitrile Chemical compound C=CC=C.C=CC#N NTXGQCSETZTARF-UHFFFAOYSA-N 0.000 claims description 8
- 229910052731 fluorine Inorganic materials 0.000 claims description 8
- 239000011737 fluorine Substances 0.000 claims description 8
- 239000000741 silica gel Substances 0.000 claims description 8
- 229910002027 silica gel Inorganic materials 0.000 claims description 8
- 238000005987 sulfurization reaction Methods 0.000 claims description 7
- 238000000465 moulding Methods 0.000 claims description 5
- 238000012856 packing Methods 0.000 claims description 5
- 238000007670 refining Methods 0.000 claims description 5
- 238000005486 sulfidation Methods 0.000 claims description 5
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 240000000233 Melia azedarach Species 0.000 claims description 2
- 239000012528 membrane Substances 0.000 abstract 2
- 238000000034 method Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 238000005303 weighing Methods 0.000 description 3
- 230000005587 bubbling Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Images
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- Diaphragms And Bellows (AREA)
Abstract
The invention discloses a linear-stroke pneumatic actuator. The linear-stroke pneumatic actuator comprises a sealed cavity, an air inlet channel is arranged on one side of the cavity, a piston is arranged in the cavity, a piston rod is arranged in the middle of the piston in a linkage mode, a device which drives a valve to open and close is arranged at one end of the piston rod, which corresponds to a connecting end between the piston rod and the piston, a spring is arranged on the other side of the cavity, the spring abuts against an inner bottom surface of the piston and the cavity, a membrane is installed on the upper portion of the piston, and periphery of the piston and the inner side surface of the cavity are in motive seal fit through the membrane. The fitting structure is adopted, non-contact working of the linear-stroke pneumatic actuator can be achieved, the pneumatic actuator is durable and pressure resistant, and the working time is safe and reliable.
Description
Technical field
The present invention relates to the pneumatic actuator technical field, particularly relate to a kind of linear motion type pneumatic actuator.
Background technique
At present, in the operation that valve is opened or closed, what adopt is general linear motion type pneumatic actuator, piston wherein cooperates with the direct motive sealing of cavity inner side surface, or piston periphery mounting O-shaped seal ring directly and the chamber wall move and contact, piston and cavity compole are easy to wear, cause thus the linear motion type pneumatic actuator job insecurity.And in use, the crushing resistance of seal ring, sealing all can not reach actual requirement, and when suction pressure was excessive, seal ring easily produced stress and concentrates and deform, and cause seal ring gas leakage, bubbling even tear.Even if driven by motor operation, easily simultaneously take expensive as cost, moreover motor easily break down, so the selection that this mode neither be ideal.
Summary of the invention
The present invention overcomes the deficiency that prior art exists, and provides a kind of crushing resistance good, and seal action is strong, stable performance, and employing pneumatic mode wear-resisting and easy to maintenance is to valve open or the novel linear motion type pneumatic actuator of closing.
For achieving the above object, the present invention adopts following scheme:
Linear motion type pneumatic actuator of the present invention, the cavity that comprises a sealing, one side of cavity is provided with gas-entered passageway, be provided with piston in the described cavity, link with it in the middle part of piston is provided with piston rod, the other end corresponding to the piston rod of described piston rod and piston connecting end is provided with a device that drives valve opening or close, the opposite side of described cavity is provided with spring, spring is conflicted on the inner bottom surface of piston and cavity, diaphragm is equipped with on the top of described piston, cooperates by described diaphragm motive sealing between the periphery of described piston and the inner side surface of cavity.
The used chaff of linear motion type pneumatic actuator of the present invention, made by following raw material:
Silica gel 20-30 part,
Butadiene acrylonitrile rubber 20-30 part,
Fluorine rubber 15-25 part,
Ethylene propylene diene rubber 20-30 part,
Cloth 5-10 part;
Wherein, described cloth is Lian Zibu.
Preferably, the used chaff of linear motion type pneumatic actuator of the present invention is made by following raw material: 30 parts in silica gel, 20 parts of butadiene acrylonitrile rubbers, 15 parts of fluorine rubber, 25 parts of ethylene propylene diene rubbers, 5 parts of the sub-cloth of company.
The production method of the used chaff of linear motion type pneumatic actuator of the present invention comprises following manufacturing process: raw material is weighed; The raw material of getting ready is refined glue, and glue furnacing temperature should be controlled in 50 ℃ of-60 ℃ of scopes, and the time is 25-40 minute; Then the good rubber filling grinding tool of refining, one deck rubber one deck cloth is until the three layers of cloth of packing into; Cover the grinding tool lid, put into vulcanizer and vulcanize, temperature is controlled at 140-160 ℃ in the sulfidation, through the moulding of 50-70 minute sulfuration diaphragm, shuts down and namely gets required diaphragm.
In the production method of the used chaff of linear motion type pneumatic actuator of the present invention, with three layers of cloth holder rubber, and through sulfuration process, the compression resistance of the diaphragm of acquisition is good, can bear ultimate pressure and reach 0.7MPa.
Described diaphragm is compared with existing pneumatic actuator used chaff owing to adopting above raw material components and special producing technique thereof, and its crushing resistance, sealing, temperature tolerance, stability all can reach excellent results, and its diaphragm volume is little, lightweight, reliable performance.
Detect through overtesting, the working pressure scope of described diaphragm is 0.5MPa-0.7MPa, and the life-span reaches more than 300,000 times, and oil resistance is very strong, and the normal working temperature scope of diaphragm is-20 ℃-120 ℃.
By adopting such scheme, linear motion type pneumatic actuator of the present invention is simple in structure, and cost is low, and is safe and reliable, and compression resistance is strong, and operational efficiency is high, the advantages such as long service life.
The further setting of the present invention is: fixing by nut between described piston and the piston rod, is coupling corresponding to the described device of the other end of the piston rod of described fixed end; Described spring is 2, is symmetrically distributed in the both sides of described piston rod, and spring is fixedly connected with described cavity; The inner top surface middle part of described cavity is fixed with a stop collar, and the inner bottom surface of described cavity is fixed with two stop collars, lays respectively at described two spring inboards; On described cavity top manual operating device is housed.
Among the present invention, be contained in the diaphragm on piston top, adopt high-temperature resistant rubber, oil resistant rubber and cloth combinations produce to form, its component mainly contains silica gel, butadiene acrylonitrile rubber, fluorine rubber, ethylene propylene diene rubber and cloth.In the production process of diaphragm, owing to having added three layers of sub-cloth of company, the anti-pressure ability of diaphragm strengthens, and when air pressure is charged to 0.7MPa, bubbling is not air tight.The oil resistance of described diaphragm is good, behind the greasy dirt, does not foam, and does not expand.Because diaphragm is taked whole sulfuration, and pull resistance and the sealing of diaphragm are strengthened.The diaphragm that obtains therefrom, 120 degree from minus 20 degrees to high temperature, this diaphragm can both work.Moreover the diaphragm volume is little, lightweight, pilot pressure is high, output power is large, stable performance is safe and reliable, operational efficiency is high, easy to maintenance.
Description of drawings
Fig. 1 is the structural representation of linear motion type pneumatic actuator of the present invention.
Embodiment
The invention will be further described below in conjunction with drawings and Examples, but the present invention is not limited only to embodiment:
Linear motion type pneumatic actuator shown in Figure 1, it comprises a seal chamber, combined by cylinder head 1 and cylinder 2, the cavity downside is fixedly connected with scaffold 7, be provided with gas-entered passageway 10 on cavity top, be provided with piston 3 in the described cavity, link with it in the middle part of piston 3 is provided with piston rod 5, piston rod 5 is provided with axle sleeve 6 with the connection position of cavity downside, described piston 3 periphery discord cavity contacts, the diaphragm 11 of a sealing is equipped with on piston 3 tops, the periphery of described piston 3 and the inner side surface of cavity cooperate by diaphragm 11 motive sealings, and the downside of cavity is equipped with spring 4, and spring 4 is conflicted between piston 3 and cavity inner bottom surface, gas pressure acts on the diaphragm 11 during work, under this pressure, piston 3 moves, thereby pushing piston bar 5 moves, and act on motoricity on the piston rod 5, drive valve closings by the coupling 8 on the piston rod 5.Otherwise in case the pressure that acts on the diaphragm 11 disappears, the spring 4 that is contained in cavity of resorption namely can produce huge reaction force, and pushing piston 3 resets, thereby drives valve opening by the shaft joint 8 on the piston rod 5.
On cavity top emergent manual operating device is housed.The nut that is fixedly connected as between piston 3 and the piston rod 5 is fixed.Scaffold 7 is fixedly mounted on the downside of cavity.Any change in shape of the diaphragm 11 on the piston 3 all drops within protection scope of the present invention.
Embodiment 1The used diaphragm of preparation linear motion type pneumatic actuator
The material component weight portion is as follows:
Silica gel 30kg, butadiene acrylonitrile rubber 20kg, fluorine rubber 15kg, ethylene propylene diene rubber 25kg, the sub-cloth 5kg of company.
Production method comprises following process step:
Take by weighing raw material; The raw material of getting ready is refined glue, and glue furnacing temperature is 52 ℃, and the time is 30 minutes; Then the good rubber filling grinding tool of refining, one deck rubber one deck cloth is until the three layers of cloth of packing into; Cover the grinding tool lid, put into vulcanizer and vulcanize, temperature is 140 ℃ in the sulfidation, through the moulding of 60 minutes sulfuration diaphragms, shuts down and namely gets required diaphragm.
Detect through overtesting, it is 0.7MPa that the working pressure of the present embodiment diaphragm reaches scope, and the life-span reaches 3,549,820,000 times, and oil resistance is very strong, and the normal working temperature scope of diaphragm is-20 ℃-120 ℃.
Embodiment 2The used diaphragm of preparation linear motion type pneumatic actuator
The material component weight portion is as follows:
Silica gel 30kg, butadiene acrylonitrile rubber 30kg, fluorine rubber 25kg, ethylene propylene diene rubber 30kg, the sub-cloth 10kg of company.
Production method comprises following process step:
Take by weighing raw material; The raw material of getting ready is refined glue, and glue furnacing temperature is 55 ℃, and the time is 40 minutes; Then the good rubber filling grinding tool of refining, one deck rubber one deck cloth is until the three layers of cloth of packing into; Cover the grinding tool lid, put into vulcanizer and vulcanize, temperature is controlled at 160 ℃ in the sulfidation, through the moulding of 70 minutes sulfuration diaphragms, shuts down and namely gets required diaphragm.
Detect through overtesting, it is 0.62MPa that the working pressure of the present embodiment diaphragm reaches scope, and the life-span reaches 334576 times, and oil resistance is very strong, and the normal working temperature scope of diaphragm is-20 ℃-120 ℃.
Embodiment 3The used diaphragm of preparation linear motion type pneumatic actuator
The material component weight portion is as follows:
Silica gel 20kg, butadiene acrylonitrile rubber 20kg, fluorine rubber 15kg, ethylene propylene diene rubber 20kg, the sub-cloth 5kg of company.
Production method comprises following process step:
Take by weighing raw material; The raw material of getting ready is refined glue, and glue furnacing temperature is 60 ℃, and the time is 38 minutes; Then the good rubber filling grinding tool of refining, one deck rubber one deck cloth is until the three layers of cloth of packing into; Cover the grinding tool lid, put into vulcanizer and vulcanize, temperature is controlled at 150 ℃ in the sulfidation, through the moulding of 50 minutes sulfuration diaphragms, shuts down and namely gets required diaphragm.
Detect through overtesting, it is 0.56MPa that the working pressure of the present embodiment diaphragm reaches scope, and the life-span reaches 321878 times, and oil resistance is very strong, and the normal working temperature scope of diaphragm is-20 ℃-120 ℃.
Claims (6)
1. linear motion type pneumatic actuator, the cavity that comprises a sealing, one side of cavity is provided with gas-entered passageway, be provided with piston in the described cavity, the position of linking with it in the middle part of piston is provided with piston rod, the other end corresponding to the piston rod of described piston rod and piston connecting end is provided with a device that drives valve opening or close, the opposite side of described cavity is provided with spring, spring is conflicted on the inner bottom surface of piston and cavity, it is levied and is: diaphragm is equipped with on the top of described piston, cooperates by described diaphragm contactless sealing between the periphery of described piston and the inner side surface of cavity; Fixing by nut between described piston and the piston rod, is coupling corresponding to the other end of the piston rod of described fixed end;
Described diaphragm is made by following raw material: silica gel 20-30 part, butadiene acrylonitrile rubber 20-30 part, fluorine rubber 15-25 part, ethylene propylene diene rubber 20-30 part, cloth 5-10 part; Wherein, described cloth is Lian Zibu.
2. linear motion type pneumatic actuator according to claim 1, it is characterized in that: described diaphragm is made by following raw material: 30 parts in silica gel, 20 parts of butadiene acrylonitrile rubbers, 15 parts of fluorine rubber, 25 parts of ethylene propylene diene rubbers, connect 5 parts of sub-cloth.
3. linear motion type pneumatic actuator according to claim 1, it is characterized in that: the production method of described diaphragm comprises following manufacturing process: raw material is weighed; The raw material of getting ready is refined glue, and glue furnacing temperature should be controlled in 50 ℃ of-60 ℃ of scopes, and the time is 25-40 minute; Then the good rubber filling grinding tool of refining, one deck rubber one deck cloth is until the three layers of cloth of packing into; Cover the grinding tool lid, put into vulcanizer and vulcanize, temperature is controlled at 140-160 ℃ in the sulfidation, through the moulding of 50-70 minute sulfuration diaphragm, shuts down and namely gets required diaphragm.
4. each described linear motion type pneumatic actuator according to claim 1-3, it is characterized in that: described spring is two, is symmetrically distributed in the both sides of described piston rod, described spring is fixedly connected with cavity.
5. each described linear motion type pneumatic actuator according to claim 1-3 is characterized in that: the inner top surface middle part of described cavity is fixed with a stop collar, and the inner bottom surface of described cavity is fixed with two stop collars, lays respectively at the inboard of described two springs.
6. each described linear motion type pneumatic actuator is characterized in that: on described cavity top manual operating device is housed according to claim 1-3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103813832A CN102865402A (en) | 2012-10-10 | 2012-10-10 | Linear-stroke pneumatic actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103813832A CN102865402A (en) | 2012-10-10 | 2012-10-10 | Linear-stroke pneumatic actuator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102865402A true CN102865402A (en) | 2013-01-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012103813832A Pending CN102865402A (en) | 2012-10-10 | 2012-10-10 | Linear-stroke pneumatic actuator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102865402A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103148261A (en) * | 2013-03-28 | 2013-06-12 | 纽威石油设备（苏州）有限公司 | Pneumatic diaphragm driving device for flat gate valve |
| CN111677906A (en) * | 2020-06-11 | 2020-09-18 | 祥松阀门有限公司 | A pneumatic pipe pinch valve with wear-resistant structure and flow adjustment function |
| CN112524325A (en) * | 2020-11-30 | 2021-03-19 | 沧州润久智能仪表有限公司 | Emergency valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4305631A1 (en) * | 1993-02-24 | 1994-08-25 | Hans Bender | Pressure-medium-controlled drive with encapsulated springs |
| CN2476690Y (en) * | 2001-04-28 | 2002-02-13 | 李涵 | Pressure control valve for water tank |
| WO2005051653A1 (en) * | 2003-11-13 | 2005-06-09 | Fisher Controls International Llc | Vulcanized rubber composition and articles manufactured therefrom |
| CN201179745Y (en) * | 2007-11-23 | 2009-01-14 | 安徽美祥实业有限公司 | Rubber seal film |
| CN201776951U (en) * | 2010-08-11 | 2011-03-30 | 黄山全晟橡胶科技有限公司 | Rubber diaphragm with cord fabrics |
| CN201884771U (en) * | 2010-12-14 | 2011-06-29 | 上海大通自控设备有限公司 | Pneumatic diaphragm actuating mechanism |
| CN201902618U (en) * | 2010-11-01 | 2011-07-20 | 浙江科海仪表有限公司 | Novel self-operated pressure adjusting valve |
| CN102131856A (en) * | 2008-06-26 | 2011-07-20 | 株式会社普利司通 | Rubber compositions comprising metal-functionalized polyisobutylene derivatives and methods of making the compositions |
| CN202125659U (en) * | 2011-06-20 | 2012-01-25 | 扬州电力设备修造厂 | Straight-through type and film type pneumatic actuating mechanism |
| CN102660058A (en) * | 2012-05-04 | 2012-09-12 | 北京市燃气集团有限责任公司 | Rubber diaphragm synthetic material for pressure-bearing gas pressure regulator, and preparation method of rubber diaphragm synthetic material |
-
2012
- 2012-10-10 CN CN2012103813832A patent/CN102865402A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4305631A1 (en) * | 1993-02-24 | 1994-08-25 | Hans Bender | Pressure-medium-controlled drive with encapsulated springs |
| CN2476690Y (en) * | 2001-04-28 | 2002-02-13 | 李涵 | Pressure control valve for water tank |
| WO2005051653A1 (en) * | 2003-11-13 | 2005-06-09 | Fisher Controls International Llc | Vulcanized rubber composition and articles manufactured therefrom |
| CN201179745Y (en) * | 2007-11-23 | 2009-01-14 | 安徽美祥实业有限公司 | Rubber seal film |
| CN102131856A (en) * | 2008-06-26 | 2011-07-20 | 株式会社普利司通 | Rubber compositions comprising metal-functionalized polyisobutylene derivatives and methods of making the compositions |
| CN201776951U (en) * | 2010-08-11 | 2011-03-30 | 黄山全晟橡胶科技有限公司 | Rubber diaphragm with cord fabrics |
| CN201902618U (en) * | 2010-11-01 | 2011-07-20 | 浙江科海仪表有限公司 | Novel self-operated pressure adjusting valve |
| CN201884771U (en) * | 2010-12-14 | 2011-06-29 | 上海大通自控设备有限公司 | Pneumatic diaphragm actuating mechanism |
| CN202125659U (en) * | 2011-06-20 | 2012-01-25 | 扬州电力设备修造厂 | Straight-through type and film type pneumatic actuating mechanism |
| CN102660058A (en) * | 2012-05-04 | 2012-09-12 | 北京市燃气集团有限责任公司 | Rubber diaphragm synthetic material for pressure-bearing gas pressure regulator, and preparation method of rubber diaphragm synthetic material |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103148261A (en) * | 2013-03-28 | 2013-06-12 | 纽威石油设备（苏州）有限公司 | Pneumatic diaphragm driving device for flat gate valve |
| CN111677906A (en) * | 2020-06-11 | 2020-09-18 | 祥松阀门有限公司 | A pneumatic pipe pinch valve with wear-resistant structure and flow adjustment function |
| CN111677906B (en) * | 2020-06-11 | 2025-03-25 | 祥松阀门集团有限公司 | A pneumatic pipe clamp valve with wear-resistant structure and flow regulation function |
| CN112524325A (en) * | 2020-11-30 | 2021-03-19 | 沧州润久智能仪表有限公司 | Emergency valve |
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| PB01 | Publication | ||
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Application publication date: 20130109 |