CN106907518B - Double-acting pneumatic reset electric open type actuating mechanism - Google Patents
Double-acting pneumatic reset electric open type actuating mechanism Download PDFInfo
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- CN106907518B CN106907518B CN201710263790.6A CN201710263790A CN106907518B CN 106907518 B CN106907518 B CN 106907518B CN 201710263790 A CN201710263790 A CN 201710263790A CN 106907518 B CN106907518 B CN 106907518B
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- air
- valve
- control valve
- cylinder part
- pipeline
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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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0675—Electromagnet aspects, e.g. electric supply therefor
Abstract
The invention discloses a double-acting pneumatic reset electric open type actuating mechanism which comprises a cylinder part, wherein the upper end of the cylinder part is provided with a hydraulic cylinder part, the lower end of the cylinder part is provided with a connecting shaft, the cylinder part comprises a piston, the piston divides the cylinder part into an upper air chamber and a lower air chamber, a push rod is arranged in the middle of the piston, the upper end of the push rod is connected with a hydraulic connecting rod of the hydraulic cylinder part, the cylinder part is connected with a main air source pipeline, the side surface of the cylinder part is provided with an air bag, one end of the air bag is connected with the main air source pipeline, and the other end of the air bag is connected with the cylinder. The double-acting pneumatic reset electric open type actuating mechanism has no spring structure, does not need to overcome spring force, and has small diameter of a cylinder and large thrust; pneumatic reset is fast, manufacturing cost is saved, and installation space is saved; meanwhile, the valve air storage bag is designed, so that an air source required by valve action can be temporarily provided under the air loss state, and the valve can be opened and closed for 2-3 times, so that the normal operation of equipment is not influenced.
Description
Technical Field
The invention relates to the technical field of valves, in particular to a valve actuating mechanism.
Background
The valve is a device for controlling the direction, pressure, and flow rate of a fluid in a fluid system, and is a device for allowing or stopping the flow of a medium (liquid, gas, or powder) in a pipe or a device and controlling the flow rate. The valve can be controlled by various transmission modes, such as manual operation, electric operation, hydraulic operation, pneumatic operation, turbine operation, electromagnetic hydraulic operation, electro-hydraulic operation, pneumatic operation, spur gear, bevel gear driving and the like.
If the traditional pneumatic actuating mechanism stops supplying air from an air source, the valve can be uncontrolled, and the normal operation of the equipment is seriously affected.
Disclosure of Invention
The invention aims to solve the technical problem of providing a double-acting pneumatic reset electric open type actuating mechanism, which solves the problem that the normal operation of equipment is seriously affected due to uncontrolled valve when an air supply is stopped by an abrupt air source in the prior art.
The invention is realized by the following technical scheme:
the utility model provides a double-acting pneumatic reset electric open actuating mechanism, includes the cylinder part, the upper end of cylinder part is equipped with the pneumatic cylinder part, the lower extreme of cylinder part is equipped with the connecting axle, the cylinder part includes the piston, the piston divide into upper plenum and lower plenum with the cylinder part, be equipped with the push rod in the middle of the piston, the push rod upper end is connected with the hydraulic pressure connecting rod of pneumatic cylinder part, the cylinder part is connected with main air supply pipeline, the side of cylinder part is equipped with the air pocket, air pocket one end is connected with main air supply pipeline, and one end is connected with the cylinder.
The invention further adopts an improved scheme that the air cylinder is controlled by an electromagnetic control structure between the air cylinder and a main air source pipeline, the electromagnetic control structure comprises an electromagnetic valve, an air control valve B and an air control valve C, the electromagnetic valve is connected with an air source signal port, and the electromagnetic valve is connected with the air control valve B and the air control valve C; the main air source pipeline is divided into two branch air source pipelines, the branch air source pipelines are respectively connected with the upper air chamber and the lower air chamber, the air control valve B and the air control valve C are respectively positioned on the two branch air source pipelines, and the air control valve B and the air control valve C are provided with exhaust ports.
According to a further improvement scheme, a one-way valve is arranged between the main air source pipeline and the air bag.
According to a further improved scheme, an air control valve A is arranged on the main air source pipeline and connected with a signal pressure pipe, an air bag is arranged between the air control valve A and the main air source pipeline, the air control valve A is reversely connected with the main air source pipeline, and the connecting part is a pipeline tee joint.
According to a further improvement scheme, an airlock valve is arranged at the front end of the pipeline tee joint.
The invention further adopts the improvement that an air filtering pressure reducer is arranged on a main air source pipeline at the rear end of the pipeline tee joint.
According to a further improvement scheme, a guide sleeve is arranged between the push rod and a lower end cylinder bottom plate of the cylinder.
According to a further improvement scheme, a guide ring is arranged between the push rod and the piston.
Compared with the prior art, the invention has the following advantages:
1. the double-acting pneumatic reset electric open type actuating mechanism has no spring structure, does not need to overcome spring force, and has small diameter of a cylinder and large thrust; pneumatic reset is fast, manufacturing cost is saved, and installation space is saved; meanwhile, as the valve air storage bag is designed, an air source required by valve action can be temporarily provided under the air loss state, and the valve is switched on and off for 2-3 times, so that the normal operation of equipment is not influenced;
2. the one-way valve controls the air bag and the main air source pipeline to keep the air source in the air bag in a saturated state all the time;
3. the air lock valve controls the main air passage, so that the air in the air bag does not flow back to the main air passage under the air losing state of the main air passage, and the air bag works normally;
4. and the air control valve A is closed when the air bag air circuit is in a normal working state of an air source, the standby state is kept, and the air control valve is automatically opened when the air is lost.
The invention is further described below with reference to the drawings and examples.
Drawings
FIG. 1 is an internal schematic view of a double acting pneumatic reset electro-open actuator of the present invention.
FIG. 2 is an overall schematic of a double-acting pneumatic reset electro-open actuator of the present invention.
FIG. 3 is a schematic airflow diagram of a double-acting pneumatic reset electro-open actuator according to the present invention
Wherein: 1-cylinder part, 2-hydraulic cylinder part, 3-connecting axle, 4-piston, 5-upper air chamber, 6-lower air chamber, 7-push rod, 8-hydraulic cylinder connecting rod, 9-main air source pipeline, 10-air bag, 11-solenoid valve, 12-pneumatic control valve B, 13-pneumatic control valve C, 14-branch air source pipeline, 15-pneumatic control valve A, 16-check valve, 17-signal pressure pipe, 18-pipeline tee, 19-air lock valve, 20-air filtration pressure reducer, 21-uide bushing, 22-uide ring.
Detailed Description
The double-acting pneumatic reset electric open type actuating mechanism shown in fig. 1 to 3 comprises a cylinder part 1, wherein the upper end of the cylinder part 1 is provided with a hydraulic cylinder part 2, the lower end of the cylinder part 1 is provided with a connecting shaft 3, the cylinder part 1 comprises a piston 4, the piston 4 divides the cylinder part 1 into an upper air chamber 5 and a lower air chamber 6, a push rod 7 is arranged in the middle of the piston 4, the upper end of the push rod 7 is connected with a hydraulic cylinder connecting rod 8 of the hydraulic cylinder part 2, the cylinder part 1 is connected with a main air source pipeline 9, the side surface of the cylinder part 1 is provided with an air bag 10, one end of the air bag 10 is connected with the main air source pipeline 9, and the other end is connected with the cylinder; the air cylinder is controlled by an electromagnetic control structure between the air cylinder and the main air source pipeline 9, the electromagnetic control structure comprises an electromagnetic valve 11, an air control valve B12 and an air control valve C13, the electromagnetic valve 11 is connected with an air source signal port, and the electromagnetic valve 11 is connected with the air control valve B12 and the air control valve C13; the main air source pipeline 9 is divided into two branch air source pipelines 14, the branch air source pipelines 14 are respectively connected with the upper air chamber 5 and the lower air chamber 6, the air control valve B12 and the air control valve C13 are respectively positioned on the two branch air source pipelines 14, and exhaust ports are arranged on the air control valve B12 and the air control valve C13; a one-way valve 16 is arranged between the main air source pipeline 9 and the air bag 10; the main air source pipeline 9 is provided with an air control valve A15, the air control valve A15 is connected with a signal pressure pipe 17, an air bag 10 is arranged between the air control valve A15 and the main air source pipeline 9, the air control valve A15 is reversely connected with the main air source pipeline 9, and the connecting part is a pipeline tee joint 18; the front end of the pipeline tee joint 18 is provided with an airlock valve 19; an air filtering pressure reducer 20 is arranged on the main air source pipeline 9 at the rear end of the pipeline tee joint 18; a guide sleeve 21 is arranged between the push rod 7 and the lower end cylinder bottom plate of the cylinder; a guide ring 22 is arranged between the push rod 7 and the piston 4.
Example 1:
after the main air source pipeline 9 is filled with compressed air, the compressed air is divided into two paths, one path passes through the one-way valve 16 (once the pressure of the main air source is equal to or less than the pressure of the air bag 10, the one-way valve is closed, as long as the pressure of the air bag 10 is lower than the pressure of the main air source, the one-way valve 16 is opened to supply air to the air bag 10, the air bag 10 can be automatically supplemented), and then the compressed air enters the air bag 10, and the pressure is maintained until the pressure reaches the air control valve A15 (when the pressure of an air source signal exists, the valve is closed); the other path of the air is connected with an air filtering pressure reducer 20 through an air lock valve 19 (the valve is opened when the main air is supplied and the valve is closed when the main air is not supplied), the air filtering pressure reducer 20 is connected with an air source signal port signal through a pipeline tee joint 18 (the air supply port of the air bag 10 after the main air source is cut off), the air source signal port signal is received by a 2-position 5-way electromagnetic valve 11, the valve opening and closing of an air control valve B12 and an air control valve C13 are respectively controlled, the main air is divided into 2 paths, the air is respectively fed into the air control valve B12 and the air control valve C13, and the air enters the upper air chamber 5 of the actuating mechanism after passing through the air control valve B12 and then enters the lower air chamber 6 of the actuating mechanism after passing through the air control valve C13. The upper air chamber 5 air control valve B12 is connected with the power-off ventilation end of the electromagnetic valve 11, and the lower air chamber 6 is connected with the power-on ventilation end of the electromagnetic valve 11. When the electromagnetic valve works normally, the electromagnetic valve 11 is electrified, the lower air chamber 6 is opened, and when the valve is closed, the upper air chamber 5 is closed.
Example 2:
when the power is on and the air is cut off, the air control valve A15 is opened, the air lock valve 19 is closed, and compressed air in the air bag 10 passes through the air filtering pressure reducer 20 to the air control valve C13 to supply air to the lower air chamber 6 of the actuating mechanism. When the power is off, compressed air in the air bag 10 passes through the air filtering pressure reducer 20, and is supplied to the upper air chamber 5 of the actuating mechanism through the air control valve B12, and the valve is opened and closed for 1-2 times according to the volume of the air bag 10.
Example 3:
meanwhile, when the power is cut off and the air is cut off, the air control valve A15 does not have a main air signal, the air control valve A15 is opened, the air lock valve 19 is closed, compressed air in the air bag 10 passes through the air filtering pressure reducer 20 and then is supplied to the air control valve B12 to supply air to the air chamber 5 on the actuating mechanism, and the valve is closed, so that the safety of equipment behind the valve is ensured.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and improvements could be made by those skilled in the art without departing from the inventive concept, which falls within the scope of the present invention.
Claims (3)
1. The utility model provides an electric open actuating mechanism that restores to throne pneumatically, includes cylinder part (1), the upper end of cylinder part (1) is equipped with pneumatic cylinder part (2), the lower extreme of cylinder part (1) is equipped with connecting axle (3), cylinder part (1) include piston (4), piston (4) divide into upper plenum (5) and lower plenum (6) with cylinder part (1), be equipped with push rod (7) in the middle of piston (4), push rod (7) upper end is connected with pneumatic cylinder connecting rod (8) of pneumatic cylinder part (2), cylinder part (1) are connected with main air supply pipeline (9), its characterized in that: the side of the air cylinder component (1) is provided with an air bag (10), one end of the air bag (10) is connected with a main air source pipeline (9), the other end of the air bag is connected with an air cylinder, the air cylinder and the main air source pipeline (9) are controlled through an electromagnetic control structure, the electromagnetic control structure comprises an electromagnetic valve (11), an air control valve B (12) and an air control valve C (13), the electromagnetic valve (11) is connected with an air source signal port, and the electromagnetic valve (11) is connected with the air control valve B (12) and the air control valve C (13); the main air source pipeline (9) is divided into two branch air source pipelines (14), the branch air source pipelines (14) are respectively connected with the upper air chamber (6) and the lower air chamber (6), the air control valve B (12) and the air control valve C (13) are respectively positioned on the two branch air source pipelines (14), exhaust ports are formed in the air control valve B (6) and the air control valve C (13), and a one-way valve (16) is arranged between the main air source pipeline (9) and the air bag (10); the air control valve A (15) is arranged on the main air source pipeline (9), the air control valve A (15) is connected with the signal pressure pipe (17), an air bag (10) is arranged between the air control valve A (15) and the main air source pipeline (9), the air control valve A (15) is reversely connected with the main air source pipeline (9), and the connecting part is a pipeline tee joint (18); the front end of the pipeline tee joint (18) is provided with an airlock valve (19), and an air filtering pressure reducer (20) is arranged on a main air source pipeline (9) at the rear end of the pipeline tee joint (18); after compressed air enters the air source pipeline (9), the air source pipeline is divided into two paths, and one path enters the air bag (10) after passing through the one-way valve (16) to reach the air control valve A (15) for pressure maintaining; the other path passes through an airlock valve (19), passes through a pipeline tee joint (18), and after reaching an air filtering pressure reducer (20), an electromagnetic valve (11) receives an air source signal port signal, valve switches of an airlock valve B (12) and an airlock valve C (13) are respectively controlled, the main air is divided into 2 paths, the airlock valve B (12) and the airlock valve C (13) are respectively fed into an actuating mechanism upper air chamber (5) after passing through the airlock valve B (12), and into an actuating mechanism lower air chamber (6) after passing through the airlock valve C (13); the upper air chamber (5) is connected with the air control valve B (6) at the power-off ventilation end of the electromagnetic valve (11), and the lower air chamber (6) is connected with the power-on ventilation end of the electromagnetic valve (11); when the electromagnetic valve works normally, the electromagnetic valve (11) is electrified, the lower air chamber (6) is electrified, the valve is opened, and when the electromagnetic valve is powered off, the upper air chamber (5) is electrified, and the valve is closed; once the pressure of the main air source is equal to or less than the pressure of the air bag (10), the single valve is closed, as long as the pressure in the air bag (10) is lower than the pressure of the main air source, the one-way valve (16) is opened to supply air to the air bag (10), so that the automatic air supplementing of the air bag (10) can be realized, and the pipeline tee joint (18) is positioned at the air supply interface of the air bag (10) after the air interruption of the main air source; when the power is on and the air is cut off, the air control valve A (15) has no main air signal, the air control valve A (15) is opened, the air lock valve (19) is closed, and compressed air in the air bag (10) passes through the air filtering pressure reducer (20) to the air control valve C (13) to supply air to the lower air chamber (6) of the actuating mechanism; when the power is off, compressed air in the air bag (10) passes through the air filtering pressure reducer (20) and is supplied to the actuating mechanism upper air chamber (5) by the air control valve B (12), and the valve is opened and closed for 1-2 times according to the volume of the air bag (10); meanwhile, the power and air are cut off, the air control valve A (15) has no main air signal, the air control valve A (15) is opened, the air lock valve (19) is closed, compressed air in the air bag (10) passes through the air filtering pressure reducer, and is supplied to the air control valve B (12) to supply air to the air chamber (5) on the actuating mechanism, and the valve is closed, so that the safety of equipment behind the valve is ensured.
2. The double acting pneumatic reset electro-open actuator of claim 1 wherein: a guide sleeve (21) is arranged between the push rod (7) and the lower end cylinder bottom plate of the cylinder.
3. The double acting pneumatic reset electro-open actuator of claim 1 wherein: a guide ring (22) is arranged between the push rod (7) and the piston (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710263790.6A CN106907518B (en) | 2017-04-21 | 2017-04-21 | Double-acting pneumatic reset electric open type actuating mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710263790.6A CN106907518B (en) | 2017-04-21 | 2017-04-21 | Double-acting pneumatic reset electric open type actuating mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106907518A CN106907518A (en) | 2017-06-30 |
| CN106907518B true CN106907518B (en) | 2023-09-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710263790.6A Active CN106907518B (en) | 2017-04-21 | 2017-04-21 | Double-acting pneumatic reset electric open type actuating mechanism |
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| CN (1) | CN106907518B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111006064B (en) * | 2020-01-15 | 2021-09-14 | 邯郸钢铁集团有限责任公司 | Maintenance method for post-rolling controlled cooling flow regulating valve |
| CN113389767A (en) * | 2021-07-23 | 2021-09-14 | 中国科学院合肥物质科学研究院 | Double-acting pneumatic actuator with long-stroke large-cylinder-diameter structure and control system thereof |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB926885A (en) * | 1959-11-13 | 1963-05-22 | Knorr Bremse Gmbh | Electro-pneumatic compressed air brake |
| JPS55155982A (en) * | 1979-05-23 | 1980-12-04 | Tokico Ltd | Valve device |
| CN1128331A (en) * | 1994-08-10 | 1996-08-07 | 株式会社基茨 | Valve driving apparatus |
| JPH11336936A (en) * | 1998-05-21 | 1999-12-07 | Kurimoto Ltd | Opening and closing device for pneumatic operation type opening and closing valve |
| CN201992174U (en) * | 2010-12-23 | 2011-09-28 | 天津精通控制仪表技术有限公司 | Air line structure of air storage type pneumatic actuating mechanism |
| CN202834326U (en) * | 2012-09-24 | 2013-03-27 | 浙江欧斯特泵阀有限公司 | Straight travel operation mechanism with gas and liquid combined |
| CN103629421A (en) * | 2013-12-06 | 2014-03-12 | 上海一核阀门制造有限公司 | Valve control system |
| CN203614879U (en) * | 2013-11-08 | 2014-05-28 | 西姆流体技术（上海）有限公司 | Double-acting pneumatic execution mechanism with standby gas storage function |
| CN103899829A (en) * | 2014-03-27 | 2014-07-02 | 超达阀门集团股份有限公司 | Double-acting pneumatic device with adjustment and fault security functions |
| CN103206424B (en) * | 2013-04-22 | 2015-09-09 | 浙江中德自控科技股份有限公司 | A kind of hand automatic control system of Pneumatic double-acting actuation mechanism band gas holder |
| CN206770740U (en) * | 2017-04-21 | 2017-12-19 | 杭州富尚阀门有限公司 | Double acting, which pneumatically resets, establishes formula executing agency by cable |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10139773A1 (en) * | 2001-08-13 | 2003-03-13 | Knorr Bremse Systeme | Control device for air brakes |
-
2017
- 2017-04-21 CN CN201710263790.6A patent/CN106907518B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB926885A (en) * | 1959-11-13 | 1963-05-22 | Knorr Bremse Gmbh | Electro-pneumatic compressed air brake |
| JPS55155982A (en) * | 1979-05-23 | 1980-12-04 | Tokico Ltd | Valve device |
| CN1128331A (en) * | 1994-08-10 | 1996-08-07 | 株式会社基茨 | Valve driving apparatus |
| JPH11336936A (en) * | 1998-05-21 | 1999-12-07 | Kurimoto Ltd | Opening and closing device for pneumatic operation type opening and closing valve |
| CN201992174U (en) * | 2010-12-23 | 2011-09-28 | 天津精通控制仪表技术有限公司 | Air line structure of air storage type pneumatic actuating mechanism |
| CN202834326U (en) * | 2012-09-24 | 2013-03-27 | 浙江欧斯特泵阀有限公司 | Straight travel operation mechanism with gas and liquid combined |
| CN103206424B (en) * | 2013-04-22 | 2015-09-09 | 浙江中德自控科技股份有限公司 | A kind of hand automatic control system of Pneumatic double-acting actuation mechanism band gas holder |
| CN203614879U (en) * | 2013-11-08 | 2014-05-28 | 西姆流体技术（上海）有限公司 | Double-acting pneumatic execution mechanism with standby gas storage function |
| CN103629421A (en) * | 2013-12-06 | 2014-03-12 | 上海一核阀门制造有限公司 | Valve control system |
| CN103899829A (en) * | 2014-03-27 | 2014-07-02 | 超达阀门集团股份有限公司 | Double-acting pneumatic device with adjustment and fault security functions |
| CN206770740U (en) * | 2017-04-21 | 2017-12-19 | 杭州富尚阀门有限公司 | Double acting, which pneumatically resets, establishes formula executing agency by cable |
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| CN106907518A (en) | 2017-06-30 |
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Denomination of invention: Double acting pneumatic reset electric open actuator Effective date of registration: 20230918 Granted publication date: 20230912 Pledgee: Zhejiang Fuyang Rural Commercial Bank branch Limited by Share Ltd. Silver Lake Pledgor: HANGZHOU FOSSON VALVES CO.,LTD. Registration number: Y2023980057036 |