CN201764075U - Spring cylinder-type actuating mechanism for single-action structure and double-action structure - Google Patents
Spring cylinder-type actuating mechanism for single-action structure and double-action structure Download PDFInfo
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- CN201764075U CN201764075U CN2010205137101U CN201020513710U CN201764075U CN 201764075 U CN201764075 U CN 201764075U CN 2010205137101 U CN2010205137101 U CN 2010205137101U CN 201020513710 U CN201020513710 U CN 201020513710U CN 201764075 U CN201764075 U CN 201764075U
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Abstract
The utility model discloses a spring cylinder-type actuating mechanism for single-action structure and double-action structure comprising a cylinder and a reset spring, wherein a support is connected to the lower part of the cylinder through a cylinder snap ring, the periphery of the support being provided with a third O-shaped sealing ring slot which is provided with a third O-shaped sealing ring therein, the top of the support being provided with a recess for disposing the reset spring, the piston being disposed inside the cylinder, the periphery of the piston being provided with a first O-shaped sealing ring slot which is provided with a first O-shaped sealing ring therein, the center of the piston being provided with a second O-shaped sealing ring slot which is provided with a second O-shaped sealing ring therein, the reset spring being disposed between the piston and a spring cover, a pretighten bolt being disposed above the piston cover, the inner hole of the piston being connected to a push rod which traverses the support, a hole in the upper part of the support being provided with a fourth O-shaped sealing ring. The utility model has the advantages of single-action and double-action cylinder-type structure and safety of production system.
Description
Technical field
The utility model relates to a kind of spring cylinder formula actuator, the spring cylinder formula actuator that particularly a kind of single-acting structure and double acting structure use.
Background technique
There is a Returnning spring in single-acting cylinder formula actuator for spring type is arranged in the cylinder, an end air inlet makes piston motion, and the rebounding force of Returnning spring makes piston reset behind the mistake gas.The advantage of single-acting cylinder formula actuator is the reset function of Returnning spring, can make spool close automatically or open, and has guaranteed the safety of production system.The shortcoming of single-acting cylinder formula actuator is that an end and the atmosphere of cylinder communicates, and and atmosphere carry out gas exchange, contain dust or corrosive gas and enter to be easy to generate in the cylinder and scratch or corrosion phenomenon, influence its working life.And the thrust that is produced behind the spring reset is very little, can not make the big pressure reduction of spool opposing, so can only use the occasion in low differential pressure.
Double-acting cylinder formula actuator is no spring type, does not have spring in the cylinder, but all air inlets of cylinder two ends by the variation of tolerance in the upper and lower two-part air cavity of piston in the cylinder, promote piston up-down.The advantage of double-acting cylinder formula actuator is that ouput force is big, can resist big pressure reduction.The cylinder upper and lower part receives pure pressurized air simultaneously, never corrosion, long service life.The shortcoming of double-acting cylinder formula actuator is because there is not Returnning spring, piston can not automatically reset to upper or the next during air failure, spool is opened or closed automatically, can not guarantee the safety of production system, therefore influence its using scope.
The model utility content
Technical problem to be solved in the utility model provides the spring cylinder formula actuator of a kind of single-acting structure and double acting structure use, it possesses the advantage of single-acting cylinder formula actuator and double-acting cylinder formula actuator simultaneously, ouput force is big, can resist big pressure reduction, and the spring reset function is arranged again, can ensure the safety of production system during air failure.
For solveing the technical problem, the spring cylinder formula actuator that the utility model provides a kind of single-acting structure and double acting structure to use, the spring cylinder formula actuator that single-acting structure and double acting structure use comprises cylinder and Returnning spring, it is characterized in that, the spring cylinder formula actuator that single-acting structure and double acting structure use also comprises support, piston, pretension bolt, spring shield, push rod, the cylinder snap ring, support is connected with the bottom of cylinder by the cylinder snap ring, the cylindrical of support is provided with the 3rd O RunddichtringO groove, be provided with the 3rd O RunddichtringO in the 3rd O RunddichtringO groove, the top of support is provided with the groove of placing Returnning spring, piston is arranged in the cylinder, the cylindrical of piston is provided with an O RunddichtringO groove, be provided with an O RunddichtringO in the one O RunddichtringO groove, the center of piston is provided with the 2nd O RunddichtringO groove, be provided with the 2nd O RunddichtringO in the 2nd O RunddichtringO groove, Returnning spring is placed between piston and the spring shield, pretension bolt is positioned at the top of spring shield, the endoporus of piston links to each other with push rod, push rod passes through support, is provided with the 4th O RunddichtringO in the upper hole of support.
Preferably, the spring cylinder formula actuator that described single-acting structure and double acting structure use also comprises the piston fixed cover, and the piston fixed cover is fixed on the support and is positioned at the below of piston.
Preferably, the spring cylinder formula actuator that described single-acting structure and double acting structure use also comprises the piston fixed cover, and the piston fixed cover is fixed on the push rod and is positioned at the top of piston.
Positive progressive effect of the present utility model is:
One, because in spring cylinder formula actuator, the utility model is one embodiment be arranged on Returnning spring between spring shield and the piston, is made as air to open type cylinder type actuator, promptly when air failure takes place, Returnning spring sets back, and spring force makes valve closing; Another embodiment of the utility model is arranged on Returnning spring between spring shield and the piston, and spring shield is upside down in the lower end of pretension bolt, is made as air to open type cylinder type actuator, and promptly when air failure took place, Returnning spring set back, and spring force is with valve opening.Above-mentioned air to open type cylinder type actuator is single-acting cylinder formula actuator.
Two, the utility model is owing to be equipped with tapped inlet hole on cylinder top and support top, form air chamber respectively in the cylinder upper and lower, two inlet hole air inlets simultaneously, utilize the variation of bleed pressure in the upper and lower two part air chambers of piston, variation in conjunction with the spring force of Returnning spring promotes piston up-down, drives spool and opens or close, and the power of throttle down is the combination that spring force and bleed pressure produce thrust, ouput force is very big, allows pressure reduction very high.The cylinder top and the bottom receive pure pressurized air simultaneously, never corrosion, long service life.The utility model has the advantage of single-acting cylinder formula actuator and double-acting cylinder actuator simultaneously, has greatly widened its using scope, is a kind of follow-on cylinder type actuator.
Three, the utility model makes cylinder reach tight seal owing to be respectively equipped with the O RunddichtringO at piston outer wall, the outer wall that connects support, the outer wall of push rod, guarantees piston reliable operation up and down in cylinder.The piston outer wall both sides are processed with the oblique angle, and push rod can have small swing during operation, are connected the resistance that decentraction is brought with valve rod to overcome push rod, and the ouput force of cylinder type actuator is increased, and are called oscillating-piston.
Description of drawings
Fig. 1 is the utility model one embodiment's a structural representation.
Fig. 2 is another embodiment's of the utility model a structural representation.
Embodiment
Lift a preferred embodiment below, and come the clearer the utility model that intactly illustrates in conjunction with the accompanying drawings.
As shown in Figure 1, the spring cylinder formula actuator (embodiment 1) that the utility model single-acting structure and double acting structure use comprises support 201, cylinder 202, piston 225, pretension bolt 210, spring shield 227, Returnning spring 229, piston fixed cover 228, push rod 211, cylinder snap ring 276, support 201 is connected with the bottom of cylinder 202 by cylinder snap ring 276, the cylindrical of support 201 is provided with the 3rd O RunddichtringO groove, be provided with the 3rd O RunddichtringO 274 in the 3rd O RunddichtringO groove, the top of support 201 is provided with the groove of placing Returnning spring 229.Piston 225 is arranged in the cylinder 202, the cylindrical of piston 225 is provided with an O RunddichtringO groove, be provided with an O RunddichtringO 271 in the one O RunddichtringO groove, the center of piston 225 is provided with the 2nd O RunddichtringO groove, be provided with the 2nd O RunddichtringO 272 in the 2nd O RunddichtringO groove, Returnning spring 229 is placed between piston 225 and the spring shield 227, pretension bolt 210 is positioned at the top of spring shield 227, the endoporus of piston 225 links to each other with push rod 211, push rod 211 passes through support 201, be provided with the 4th O RunddichtringO 278 in the upper hole of support 201, piston fixed cover 228 is fixed on the push rod 211 and is positioned at the below of piston 225.
The spring cylinder formula actuator that the utility model single-acting structure and double acting structure use is air to open type cylinder type actuator, after assembling is finished, Returnning spring has a pre compressed magnitude, after air to open type cylinder type actuator and modulating valve assembling, just form the gas force open type modulating valve, bleed pressure is ventilated to the cylinder bottom from the inlet hole on support top, piston moves up, and compression reseting spring makes valve opening; When source of the gas broke down, the rebounding force of Returnning spring promoted piston and push rod moves down, to valve closing; Under normal circumstances, the inlet hole air inlet on cylinder top promotes piston at the making a concerted effort of the thrust of generation and Returnning spring reaction force and push rod moves down, and the valve core movement that drives modulating valve is to closed position.
As shown in Figure 2, the spring cylinder formula actuator (embodiment 2) that the utility model single-acting structure and double acting structure use comprises support 201, cylinder 202, piston 225, pretension bolt 210, spring shield 227, Returnning spring 229, piston fixed cover 228, push rod 211, cylinder snap ring 276, support 201 is connected with the bottom of cylinder 202 by cylinder snap ring 276, the cylindrical of support 201 is provided with the 3rd O RunddichtringO groove, be provided with the 3rd O RunddichtringO 274 in the 3rd O RunddichtringO groove, the top of support 201 is provided with the groove of placing Returnning spring 229.Piston 225 is arranged in the cylinder 202, the center of piston 225 is provided with the 2nd O RunddichtringO groove, be provided with the 2nd O RunddichtringO 272 in the 2nd O RunddichtringO groove, Returnning spring 229 is placed between piston 225 and the spring shield 227, pretension bolt 210 is above spring shield 227, and is standby when keeping gas force open type; Push rod 211 passes through support 201, is provided with the 4th O RunddichtringO 278 in the upper hole of support 201, and piston fixed cover 228 is fixed on the push rod 211 and is positioned at the top of piston 225.
After the spring cylinder formula actuator assembling that the utility model single-acting structure and double acting structure use is finished, Returnning spring has a pre compressed magnitude, after air to close type cylinder type actuator and modulating valve assembling, just form the air to close modulating valve, bleed pressure from the top inlet hole of cylinder to the air inlet of cylinder top, promote piston and drive push rod and move down, Returnning spring pressurized and compressing; When source of the gas broke down, the piston top discharged source of the gas, and the rebounding force of Returnning spring promotes piston and push rod moves up, to valve wide open; Under normal circumstances, the inlet hole air inlet of cylinder below promotes piston at the making a concerted effort of the thrust of generation and the reaction force of Returnning spring and push rod moves up, and the valve core movement that drives modulating valve is to fully open position.
In sum, be provided with Returnning spring in the cylinder, can produce different decrements to Returnning spring according to manufacturing technique requirent, during air failure, Returnning spring relies on the rebounding force of self to make valve closing or opens, and has guaranteed the safety of production system; When normal the use, the upper and lower of cylinder receives pure pressurized air simultaneously, variation by bleed pressure difference in the upper and lower two part air cavitys of piston, promote piston up-down, thereby make valve closing or open, its power that acts on the piston is making a concerted effort of the thrust that produces of bleed pressure and springback power.Ouput force of the present utility model is very big, and it is very high to make valve be suitable for pressure reduction, is specially adapted to the automatic control of high-temperature high-pressure medium, and long service life, has guaranteed the safety of production system simultaneously.The utility model has the advantage of single-acting cylinder formula actuator and double-acting cylinder formula actuator simultaneously, has overcome their shortcoming, is follow-on cylinder type actuator.
Though more than described embodiment of the present utility model, but those skilled in the art is to be understood that, these only illustrate, and under the prerequisite that does not deviate from principle of the present utility model and essence, can make numerous variations or modification to these mode of executions.Therefore, protection domain of the present utility model is limited by appended claims.
Claims (3)
1. the spring cylinder formula actuator that uses of single-acting structure and double acting structure, the spring cylinder formula actuator that single-acting structure and double acting structure use comprises cylinder and Returnning spring, it is characterized in that, the spring cylinder formula actuator that single-acting structure and double acting structure use also comprises support, piston, pretension bolt, spring shield, push rod, the cylinder snap ring, support is connected with the bottom of cylinder by the cylinder snap ring, the cylindrical of support is provided with the 3rd O RunddichtringO groove, be provided with the 3rd O RunddichtringO in the 3rd O RunddichtringO groove, the top of support is provided with the groove of placing Returnning spring, piston is arranged in the cylinder, the cylindrical of piston is provided with an O RunddichtringO groove, be provided with an O RunddichtringO in the one O RunddichtringO groove, the center of piston is provided with the 2nd O RunddichtringO groove, be provided with the 2nd O RunddichtringO in the 2nd O RunddichtringO groove, Returnning spring is placed between piston and the spring shield, pretension bolt is positioned at the top of spring shield, the endoporus of piston links to each other with push rod, push rod passes through support, is provided with the 4th O RunddichtringO in the upper hole of support.
2. the spring cylinder formula actuator that single-acting structure as claimed in claim 1 and double acting structure use, it is characterized in that, the spring cylinder formula actuator that described single-acting structure and double acting structure use also comprises the piston fixed cover, and the piston fixed cover is fixed on the support and is positioned at the below of piston.
3. the spring cylinder formula actuator that single-acting structure as claimed in claim 1 and double acting structure use, it is characterized in that, the spring cylinder formula actuator that described single-acting structure and double acting structure use also comprises the piston fixed cover, and the piston fixed cover is fixed on the push rod and is positioned at the top of piston.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205137101U CN201764075U (en) | 2010-08-31 | 2010-08-31 | Spring cylinder-type actuating mechanism for single-action structure and double-action structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205137101U CN201764075U (en) | 2010-08-31 | 2010-08-31 | Spring cylinder-type actuating mechanism for single-action structure and double-action structure |
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| Publication Number | Publication Date |
|---|---|
| CN201764075U true CN201764075U (en) | 2011-03-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205137101U Expired - Fee Related CN201764075U (en) | 2010-08-31 | 2010-08-31 | Spring cylinder-type actuating mechanism for single-action structure and double-action structure |
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| CN (1) | CN201764075U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102384304A (en) * | 2010-08-31 | 2012-03-21 | 奥士奥控制阀门(上海)有限公司 | Spring air cylinder type actuating mechanism used for single-acting structure and double-acting structure |
| WO2013013398A1 (en) * | 2011-07-27 | 2013-01-31 | 易斯拓克自动化股份有限公司 | Pneumatic cylinder structure |
| CN103591366A (en) * | 2013-11-20 | 2014-02-19 | 无锡智能自控工程股份有限公司 | Stroke feedback ejector rod device of pneumatic actuator |
-
2010
- 2010-08-31 CN CN2010205137101U patent/CN201764075U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102384304A (en) * | 2010-08-31 | 2012-03-21 | 奥士奥控制阀门(上海)有限公司 | Spring air cylinder type actuating mechanism used for single-acting structure and double-acting structure |
| WO2013013398A1 (en) * | 2011-07-27 | 2013-01-31 | 易斯拓克自动化股份有限公司 | Pneumatic cylinder structure |
| CN103591366A (en) * | 2013-11-20 | 2014-02-19 | 无锡智能自控工程股份有限公司 | Stroke feedback ejector rod device of pneumatic actuator |
| CN103591366B (en) * | 2013-11-20 | 2016-01-06 | 无锡智能自控工程股份有限公司 | Stroke feedback ejector rod device of pneumatic actuator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110316 Termination date: 20160831 |