CN103672123A - Buffer type large-torque spring restoration executing mechanism - Google Patents

Buffer type large-torque spring restoration executing mechanism Download PDF

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Publication number
CN103672123A
CN103672123A CN201310629253.0A CN201310629253A CN103672123A CN 103672123 A CN103672123 A CN 103672123A CN 201310629253 A CN201310629253 A CN 201310629253A CN 103672123 A CN103672123 A CN 103672123A
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China
Prior art keywords
buffer
air chamber
torque spring
piston rod
cylinder cover
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CN201310629253.0A
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Chinese (zh)
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CN103672123B (en
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陈彦
闵玉萍
邹帆
顾嘉
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Wuxi Smart Auto Control Engineering Co Ltd
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Wuxi Smart Auto Control Engineering Co Ltd
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Publication of CN103672123A publication Critical patent/CN103672123A/en
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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
    • F16K31/1221—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston one side of the piston being spring-loaded

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Actuator (AREA)

Abstract

The invention relates to a pneumatic executing mechanism, in particular to a buffer type large-torque spring restoration executing mechanism with a final position pneumatic buffer structure, and belongs to the technical field of pneumatic executing mechanisms. The buffer type large-torque spring restoration executing mechanism comprises a cylinder body. The outer side of a left cylinder cover is connected with a left cylinder cover pressing plate through bolts. A guide sleeve is disposed in the cylinder body. The guide sleeve is tightly pressed on the left cylinder cover through the left cylinder cover pressing plate. The right side of a right cylinder cover is connected with a converting box through bolts. The rear end of the converting box is connected with a buffer air chamber. The rear end of the buffer air chamber is connected with the rear cylinder cover of the buffer air chamber. A buffer seat is connected to the rear cylinder cover of the buffer air chamber. A buffer plunger is slidably mounted in the buffer seat. The buffer type large-torque spring restoration executing mechanism has the advantages that the drive requirements of a valve acting frequently can be satisfied, internal component damage, caused by frequent acting, of the executing mechanism can be avoided effectively, and accordingly maintenance frequency can be lowered, and economical benefits can be increased.

Description

Buffering type high pulling torque spring return actuator
Technical field
The present invention relates to a kind of pneumatic actuator, a kind of high pulling torque spring reset type, with the pneumatic actuator of final position gas buffer structure, belongs to pneumatic actuator technical field specifically.
Background technique
Industrial automation is just produced at fast fetching for traditional industry production model, becomes the main force that promotes productivity, reduces labor strength.Along with production-scale Rapid Expansion, the specification of control valve and control accuracy have become the key factor of restriction industrial automation process.The control valve of small dimension is the unappeasable production capacity demand of expansion day by day, and main manifestations shows that Design Mode that actuator's structure of the control valve for driving can not be amplified by equal proportion completely meets the drive unit of large specifications control valve.Common pneumatic pinion and-rack actuator, air bladder formula angle stroke actuators, Pneumatic piston angle stroke actuators have a wide range of applications on the rotation class valves such as butterfly valve, ball valve, but these actuators are often because of the restriction of its structure and processing conditions, can not meet the valve demand for frequent movement, in the process of frequent movement, easily damage internal component, even cause valve catastrophe failure, to such an extent as to whole device is forced to parking maintenance, to client, bring larger economic loss.
Summary of the invention
The object of the invention is to overcome above-mentioned deficiency, thereby provide a kind of buffering type high pulling torque spring return actuator, can meet the demand of the valve driving of frequent movement, can effectively avoid the actuator's damage of internal device causing because of frequent movement, thereby reduction repair rate, increases economic efficiency.
According to technological scheme provided by the invention, buffering type high pulling torque spring return actuator comprises cylinder body, left cylinder cap and right cylinder cap are welded respectively in cylinder body two ends, in cylinder body, be provided with the return piston that can horizontally slip, between return piston and left cylinder cap, be provided with the Returnning spring that compresses return piston, it is characterized in that: left cylinder cap outside is bolted left cylinder cap pressing plate, is provided with guide sleeve in cylinder body, and guide sleeve is pressed on left cylinder cap by left cylinder cap pressing plate.
Right cylinder cap right side is bolted conversion casing, and conversion casing upper end is bolted conversion case lid, and conversion case lid center is bolted end cap; In end cap, be provided with upper bearing (metal), conversion casing bottom centre is provided with lower bearing, and the crank top rolling that is arranged on conversion casing center is arranged on upper bearing (metal) inner ring, rolls and be arranged on lower bearing inner ring in crank bottom; At crank, be respectively equipped with up and down upper hopper chute and gliding groove, top slide block is slidably installed in upper hopper chute, the bottom slide block that is slidably installed in gliding groove, is provided with position restoring piston rod between top slide block and bottom slide block, top slide block, bottom slide block and position restoring piston rod are linked into an integrated entity and realized synchronous slide by bearing pin.
Conversion box back connects buffer air chamber body, and buffer air chamber body rear end connects buffer air chamber back cylinder cover, on buffer air chamber back cylinder cover, is bolted buffing pad, and buffer plunger is slidably installed in buffing pad.
It is anterior that position restoring piston rod front end is provided with position restoring piston rod, position restoring piston rod front portion puts in the bearing being arranged in guide sleeve, position restoring piston rod rear end is provided with position restoring piston rod rear portion, and position restoring piston rod rear portion puts in buffer air chamber body and links into an integrated entity with buffer plunger.
Further, on return piston, be provided with guidance tape with cylinder body connecting surface.
Further, be threaded connection spacing screw mandrel in guide sleeve, spacing screw mandrel left end stretches out left cylinder cap and is threaded connection screw mandrel sheath.
Further, crank top is stretched out end cap and is bolted pointer cover plate, and pointer cover plate is provided with stroke board.
Further, bearing outside is provided with the bearing plate being bolted in guide sleeve outer end.
Further, buffer air chamber back cylinder cover is provided with back cylinder cover air source hole.
Further, buffing pad is provided with buffing pad air source hole.
Compared with the prior art the present invention has the following advantages:
1. described in, buffering type high pulling torque spring return actuator rely on to increase and to overcome acting force of the spring and reach cushioning effect in spring one side, opposite side is to rely on the gas buffer structure of actuator self to realize cushioning effect, does not need to carry out other any annexes and is equipped with and controls.
2. Returnning spring module can realize the valve demand for control that meets plurality of specifications compared with the moment output of high pulling torque.
3. by adjusting the size of back cylinder cover air source hole, can realize the debugging demand of multiple cushioning effect.
4. the design of buffer plunger and buffing pad, with respect to the buffer structure of other external-addeds, meets product specification demand more in its function, is just produced into originally and says, increases few compared with plain edition actuator.
5. buffering type high pulling torque spring return actuator is as the valve positioner of frequent movement, can extend the working life of actuator self, also can reduce the excessive abrasion that valve sealing face causes because of frequent contact simultaneously, extend the working life of whole valve, be reached for client and reduce costs, increase the final purpose of mixed economy profit.
Accompanying drawing explanation
Fig. 1 is plan view of the present invention.
Fig. 2 is plan view of the present invention.
Description of reference numerals: 1-screw mandrel sheath, the left cylinder cap pressing plate of 2-, the left cylinder cap of 3-, 4-Returnning spring, 5-cylinder body, 6-bearing, 7-bearing plate, 8-position restoring piston rod is anterior, 9-return piston, the right cylinder cap of 10-, the spacing screw mandrel of 11-, 12-guide sleeve, 13-guidance tape, 14-changes casing, 15 conversion case lids, 16-end cap, 17-stroke board, 18-pointer cover plate, 19-crank, 20-top slide block, 21-bottom slide block, 22-upper hopper chute, 23-gliding groove, 24-upper bearing (metal), 25-lower bearing, 26-bearing pin, 27-position restoring piston rod, 28-position restoring piston rod rear portion, 29-buffer air chamber body, 30-buffer plunger, 31-buffer air chamber back cylinder cover, 32-buffing pad, 33-back cylinder cover air source hole, 34-buffing pad air source hole.
Embodiment
The present invention is below further described in connection with the embodiment in accompanying drawing:
As shown in Figure 1 and 2, the present invention mainly comprises cylinder body 5, and left cylinder cap 3 and right cylinder cap 10 are welded respectively in cylinder body 5 two ends, is provided with the return piston 9 that can horizontally slip in cylinder body 5, is provided with the Returnning spring 4 that compresses return piston 9 between return piston 9 and left cylinder cap 3.On return piston 9, be provided with guidance tape 13 with cylinder body 5 connecting surfaces, 13 pairs of return pistons 9 of guidance tape play leading role.
Left cylinder cap 3 outsides are bolted left cylinder cap pressing plate 2, are provided with guide sleeve 12 in cylinder body 5, and guide sleeve 12 is pressed on left cylinder cap 3 by left cylinder cap pressing plate 2.In guide sleeve 12, be threaded connection spacing screw mandrel 11, spacing screw mandrel 11 left ends stretch out left cylinder cap 3 and are threaded connection screw mandrel sheath 1, connect the spacing screw mandrel 11 of screw mandrel sheath 1 protection and prevent from getting rusty.
Right cylinder cap 10 right sides are bolted conversion casing 14, and conversion casing 14 upper ends are bolted conversion case lid 15, and conversion case lid 15 centers are bolted end cap 16.In end cap 16, be provided with upper bearing (metal) 24, conversion casing 14 bottom centre are provided with lower bearing 25, and the crank 18 tops rollings that are arranged on conversion casing 14 centers are arranged on upper bearing (metal) 24 inner rings, roll and be arranged on lower bearing 25 inner rings in crank 18 bottoms.Crank 18 tops are stretched out end cap 16 and are bolted pointer cover plate 18.Pointer cover plate 18 is provided with stroke board 17.
At crank 18, be respectively equipped with up and down upper hopper chute 22 and gliding groove 23, top slide block 20 is slidably installed in upper hopper chute 22, bottom slide block 21 is slidably installed in gliding groove 23, between top slide block 20 and bottom slide block 21, be provided with position restoring piston rod 27, top slide block 20, bottom slide block 21 and position restoring piston rod 27 are linked into an integrated entity and are realized synchronous slide by bearing pin 26.
Conversion casing 14 rear ends connect buffer air chamber body 29, and buffer air chamber body 29 rear ends connect buffer air chamber back cylinder cover 31, are bolted buffing pad 32 on buffer air chamber back cylinder cover 31, and buffer plunger 30 is slidably installed in buffing pad 32.
Position restoring piston rod 27 front ends are provided with position restoring piston rod front portion 8, and position restoring piston rod front portion 8 puts in the bearing 6 being arranged in guide sleeve 12, and bearing 6 outsides are provided with the bearing plate 7 being bolted in guide sleeve 12 outer ends.Position restoring piston rod 27 rear ends are provided with position restoring piston rod rear portion 28, and position restoring piston rod rear portion 28 puts in buffer air chamber body 29 and links into an integrated entity with buffer plunger 30.
Described buffer air chamber back cylinder cover 31 is provided with back cylinder cover air source hole 33, and buffing pad 32 is provided with buffing pad air source hole 34, back cylinder cover air source hole 33 and 34 air inlets simultaneously of buffing pad air source hole, exhaust simultaneously.During air inlet, owing to there being a cushion stroke between buffer plunger 30 and buffing pad 32, so the left side air chamber air inlet that back cylinder cover air source hole 33 can only be to buffer air chamber, and buffing pad air source hole 34 can only be given the right side air chamber air inlet of buffer plunger 30 with buffing pad 32 formed buffer air chambers.After cushion stroke finishes, the left side air chamber of buffer air chamber becomes an air chamber after being communicated with the right side air chamber of buffer air chamber, and back cylinder cover air source hole 33 and buffing pad air source hole 34 are simultaneously to this air chamber air inlet.
Return piston 9 is because the left side air chamber of buffer air chamber and the right side air chamber of buffer air chamber become an air chamber after being communicated with, internal pressure is reduced in the time of cannot overcoming acting force of the spring, starting to react on position restoring piston rod 27 moves to opposite side, making to bring about the desired sensation becomes an air chamber space and diminishes to buffer plunger 30 and contact completely with buffing pad 32 after the left side air chamber of buffer air chamber and the right side air chamber of buffer air chamber are communicated with, again form two air chambers.Now less owing to having changed the size of suction port of left side air chamber of buffer air chamber, reached and changed the effect that exhaust delays, can realize pooling feature.

Claims (7)

1. a buffering type high pulling torque spring return actuator, comprise cylinder body (5), left cylinder cap (3) and right cylinder cap (10) are welded respectively in cylinder body (5) two ends, in cylinder body (5), be provided with the return piston (9) that can horizontally slip, between return piston (9) and left cylinder cap (3), be provided with the Returnning spring (4) that compresses return piston (9), it is characterized in that: left cylinder cap (3) outside is bolted left cylinder cap pressing plate (2), in cylinder body (5), be provided with guide sleeve (12), guide sleeve (12) is pressed on left cylinder cap (3) by left cylinder cap pressing plate (2);
Right cylinder cap (10) right side is bolted conversion casing (14), and conversion casing (14) upper end is bolted conversion case lid (15), and conversion case lid (15) center is bolted end cap (16); In end cap (16), be provided with upper bearing (metal) (24), conversion casing (14) bottom centre is provided with lower bearing (25), crank (18) the top rolling that is arranged on conversion casing (14) center is arranged on upper bearing (metal) (24) inner ring, rolls and be arranged on lower bearing (25) inner ring in crank (18) bottom; At crank (18), be respectively equipped with up and down upper hopper chute (22) and gliding groove (23), top slide block (20) is slidably installed in upper hopper chute (22), bottom slide block (21) is slidably installed in gliding groove (23), between top slide block (20) and bottom slide block (21), be provided with position restoring piston rod (27), top slide block (20), bottom slide block (21) and position restoring piston rod (27) are linked into an integrated entity and are realized synchronous slide by bearing pin (26);
Conversion casing (14) rear end connects buffer air chamber body (29), buffer air chamber body (29) rear end connects buffer air chamber back cylinder cover (31), on buffer air chamber back cylinder cover (31), be bolted buffing pad (32), buffer plunger (30) is slidably installed in buffing pad (32);
Position restoring piston rod (27) front end is provided with position restoring piston rod anterior (8), position restoring piston rod anterior (8) puts in the bearing (6) being arranged in guide sleeve (12), position restoring piston rod (27) rear end is provided with position restoring piston rod rear portion (28), and position restoring piston rod rear portion (28) puts in buffer air chamber body (29) and links into an integrated entity with buffer plunger (30).
2. buffering type high pulling torque spring return actuator as claimed in claim 1, is characterized in that: at return piston (9), upper and cylinder body (5) connecting surface is provided with guidance tape (13).
3. buffering type high pulling torque spring return actuator as claimed in claim 1, it is characterized in that: in described guide sleeve (12), be threaded connection spacing screw mandrel (11), spacing screw mandrel (11) left end stretches out left cylinder cap (3) and is threaded connection screw mandrel sheath (1).
4. buffering type high pulling torque spring return actuator as claimed in claim 1, is characterized in that: described crank (18) top is stretched out end cap (16) and is bolted pointer cover plate (18), and pointer cover plate (18) is provided with stroke board (17).
5. buffering type high pulling torque spring return actuator as claimed in claim 1, is characterized in that: described bearing (6) outside is provided with the bearing plate (7) being bolted in guide sleeve (12) outer end.
6. buffering type high pulling torque spring return actuator as claimed in claim 1, is characterized in that: described buffer air chamber back cylinder cover (31) is provided with back cylinder cover air source hole (33).
7. buffering type high pulling torque spring return actuator as claimed in claim 1, is characterized in that: described buffing pad (32) is provided with buffing pad air source hole (34).
CN201310629253.0A 2013-11-30 2013-11-30 Buffering type high pulling torque spring return actuator Active CN103672123B (en)

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CN201310629253.0A CN103672123B (en) 2013-11-30 2013-11-30 Buffering type high pulling torque spring return actuator

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Application Number Priority Date Filing Date Title
CN201310629253.0A CN103672123B (en) 2013-11-30 2013-11-30 Buffering type high pulling torque spring return actuator

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CN103672123B CN103672123B (en) 2016-03-16

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104806811A (en) * 2015-05-04 2015-07-29 中国海洋石油总公司 Deep sea valve executing mechanism with bidirectional pressure dynamic balance compensation device
CN106286956A (en) * 2015-06-12 2017-01-04 无锡市诚天诺执行器制造有限公司 A kind of novel valve driving means
CN108087622A (en) * 2017-11-28 2018-05-29 安徽荣达阀门有限公司 A kind of hydraulic damping device for valve
CN109806756A (en) * 2019-01-12 2019-05-28 湖州加怡新市热电有限公司 A kind of desulfurizing tower with demister
CN115823330A (en) * 2022-12-19 2023-03-21 无锡福斯拓科科技有限公司 Pneumatic actuator with rapid exhaust buffer structure

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1490661A (en) * 1974-02-06 1977-11-02 Willis Oil Tool Co Safety shut-off valve
CN2849270Y (en) * 2005-11-30 2006-12-20 江苏神通阀门有限公司 Nuclear pneumatic device
CN201462150U (en) * 2009-06-23 2010-05-12 四川格林流体控制设备有限公司 Pneumatic execution mechanism
CN202629287U (en) * 2012-07-09 2012-12-26 重庆山能仪表有限公司 Limiting structure of double-air-cylinder executing mechanism of adjusting valve
CN202812413U (en) * 2012-09-17 2013-03-20 成都迈可森流体控制设备有限公司 Shifting-fork drive actuator with dual guide shafts
CN203036059U (en) * 2012-11-15 2013-07-03 航天长征化学工程股份有限公司 Pneumatic actuating mechanism driving valve
CN203189844U (en) * 2013-04-18 2013-09-11 江苏神通阀门股份有限公司 Cylinder-driven pneumatic device
CN203627993U (en) * 2013-11-30 2014-06-04 无锡智能自控工程股份有限公司 Buffering large-torque spring restoration executing mechanism

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1490661A (en) * 1974-02-06 1977-11-02 Willis Oil Tool Co Safety shut-off valve
CN2849270Y (en) * 2005-11-30 2006-12-20 江苏神通阀门有限公司 Nuclear pneumatic device
CN201462150U (en) * 2009-06-23 2010-05-12 四川格林流体控制设备有限公司 Pneumatic execution mechanism
CN202629287U (en) * 2012-07-09 2012-12-26 重庆山能仪表有限公司 Limiting structure of double-air-cylinder executing mechanism of adjusting valve
CN202812413U (en) * 2012-09-17 2013-03-20 成都迈可森流体控制设备有限公司 Shifting-fork drive actuator with dual guide shafts
CN203036059U (en) * 2012-11-15 2013-07-03 航天长征化学工程股份有限公司 Pneumatic actuating mechanism driving valve
CN203189844U (en) * 2013-04-18 2013-09-11 江苏神通阀门股份有限公司 Cylinder-driven pneumatic device
CN203627993U (en) * 2013-11-30 2014-06-04 无锡智能自控工程股份有限公司 Buffering large-torque spring restoration executing mechanism

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104806811A (en) * 2015-05-04 2015-07-29 中国海洋石油总公司 Deep sea valve executing mechanism with bidirectional pressure dynamic balance compensation device
CN104806811B (en) * 2015-05-04 2017-04-12 中国海洋石油总公司 Deep sea valve executing mechanism with bidirectional pressure dynamic balance compensation device
CN106286956A (en) * 2015-06-12 2017-01-04 无锡市诚天诺执行器制造有限公司 A kind of novel valve driving means
CN108087622A (en) * 2017-11-28 2018-05-29 安徽荣达阀门有限公司 A kind of hydraulic damping device for valve
CN109806756A (en) * 2019-01-12 2019-05-28 湖州加怡新市热电有限公司 A kind of desulfurizing tower with demister
CN115823330A (en) * 2022-12-19 2023-03-21 无锡福斯拓科科技有限公司 Pneumatic actuator with rapid exhaust buffer structure

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