CN102788192A - Clutch type safe switchover hand wheel mechanism of pneumatic actuator - Google Patents
Clutch type safe switchover hand wheel mechanism of pneumatic actuator Download PDFInfo
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- CN102788192A CN102788192A CN2011101320183A CN201110132018A CN102788192A CN 102788192 A CN102788192 A CN 102788192A CN 2011101320183 A CN2011101320183 A CN 2011101320183A CN 201110132018 A CN201110132018 A CN 201110132018A CN 102788192 A CN102788192 A CN 102788192A
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Abstract
The invention discloses a clutch type safety switchover hand wheel mechanism of a pneumatic actuator. The clutch type safety switchover hand wheel mechanism mainly comprises a hand wheel, a switchover handle, a box body, a box cover and a worm and gear transmission device which is arranged in an inner cavity formed by the box body and the box cover, the hand wheel is moved and turned, worms located in two eccentric half shafts are swirled, so that an output shaft located on a worm wheel can be driven to rotate, and a manual driving of a valve device can be achieved by the hand wheel mechanism. The switchover handle is swirled to a manual position, and an integrated safety protective device, namely a gas source pipeline which can automatically shut down pneumatic control, is located on the eccentric half shafts so as to prevent mechanism damages caused by the fact that the gas source is suddenly switched on due to operation faults. Compared with traditional safety devices, the clutch type safety switchover hand wheel mechanism has the advantages that the integration and the safety are high, and the operation is reliable.
Description
Technical field
The present invention relates to the pneumatic control valve field, specifically increased between pneumatic actuator and the valve beyond pipeline is in danger, when pneumatic actuator can not be worked, switch handwheel with the clutch type safety of manually removing the rotary valve door.
Background technique
The handwheel of existing technology mainly with casing, the worm gear that is arranged on box house, worm screw, be fixedly connected on the worm screw two ends be tubular and with the non-coaxial eccentric semiaxis that is connected of said worm screw; The handwheel that is fixedly connected with a said eccentric semiaxis, be fixed on the switching handle on the said eccentric semiaxis; When the switching handle was in the position, worm and wheel separated; When the switching handle was moved to the upper part, worm and wheel combined, and rotates handwheel, drove the worm screw rotation immediately, and worm screw drives the worm gear rotation again.Adopt the handwheel of this structure, when worm and wheel combined, when connecting source of the gas suddenly and make the pneumatic actuator work done because of certain reason, the then as easy as rolling off a log handwheel that causes destroyed.
The handwheel that but has a kind of Pneumatic and manual that has Safeguard to switch in the industry.This Safeguard is installed on the handwheel after as annex, and it is arranged on the handwheel far-end casing, and an external cam pneumatic cut-off valve also is when handwheel is in manual state, and the source of the gas pipeline is cut off.As safety component, this structure ratio is easier to reduce its reliability because of extraneous complex working condition condition effect.
So on the whole, traditional handwheel that is used for the Pneumatic and manual switching does not have Safeguard, in case in manual position, as easy as rolling off a log because of certain reason source of the gas is connected suddenly with handwheel destruction, even cause more serious related accident.
Summary of the invention
The objective of the invention is the defective that exists to existing technology, provide the clutch type safety of pneumatic actuator to switch handwheel, should guarantee safe switching, the integration that guarantees handwheel again with and the high reliability of work.
The technical solution adopted for the present invention to solve the technical problems is: the clutch type safety of pneumatic actuator is switched handwheel; Its structure mainly comprises handwheel, switches set worm gearing in the inner chamber that handle, casing, case lid and casing and case lid constituted; Wherein the worm screw two ends connects eccentric shaft respectively; Said switching handle is fixedly connected with said eccentric semiaxis; Said handwheel is fixedly connected on the said eccentric semiaxis of a side, is provided with away from the eccentric shaft of said handwheel and can under the manual function state, cuts off the integrated form Safeguard that the source of the gas pipeline comes pneumatic control automatically.
Said integrated form Safeguard includes and switches spool and cover with switching valve and with the left side that switching valve is assembled together; Switching valve is socketed on the eccentric semiaxis and is fixed on the casing, switches spool and is fixedly connected on the said eccentric semiaxis, and rotate with said eccentric semiaxis.
The circumferential surface of said left side lid offers disconnected each other source of the gas first hole, source of the gas second hole, source of the gas the 3rd hole; And with the left side lid section that switches the spool next-door neighbour on offer respectively three holes that independently link separately with source of the gas first hole, source of the gas second hole, source of the gas the 3rd hole; On the switching spool, be respectively arranged with spool first hole, spool second hole, spool the 3rd hole, spool the 4th hole, wherein spool first hole and spool second hole are connected, and spool the 3rd hole and spool the 4th hole are connected.
Said switching handle is in following position; Promptly desire to drive the valve rod action of valve with pneumatic actuator; When driving turbine shaft idle running, source of the gas second hole, source of the gas the 3rd hole and spool the 3rd hole, spool the 4th hole are communicated with respectively, the communication passage that this moment, source of the gas provided through this mechanism; Lead to pneumatic actuator again, thereby drive the pneumatic actuator work done; Drive eccentric semiaxis and change when revolving several angle and being positioned at manual plane when switching handle; Then source of the gas first hole, source of the gas second hole and spool first hole, spool second hole are communicated with; And the exhaust passage being provided to pneumatic actuator, the passage of source of the gas and pneumatic actuator then is cut off.
The clutch type safety switching handwheel of pneumatic actuator of the present invention is compared with existing technology, has following beneficial effect:
The clutch type safety of pneumatic actuator of the present invention is switched handwheel; Its structure mainly comprises handwheel, switches set worm gearing in the inner chamber that handle, casing, case lid and casing and case lid constituted; Change hands wheel through removing; Turn is positioned at two worm screws within the eccentric semiaxis, can order about the output shaft that is positioned on the turbine and rotate, and then realize the purpose of this handwheel manual driven valving.The present invention is integrated and be built on the revolute of worm screw with Safeguard.When manual work switches to manual position with this device, promptly cut off the source of the gas pipeline of pneumatic control automatically, to prevent that because of operating trouble the consequence that source of the gas is connected the mechanism's damage that causes suddenly takes place.This device and traditional safety installations ratio, integration is strong, and is safe, and it is more reliable to work.When being power with the source of the gas, when driving the valve on the pipeline, switching handle and move to following position through pneumatic actuator.This handwheel is in the servo-actuated state.Handwheel and the valve rotation that source of the gas orders about final controlling element and drives servo-actuated synchronously.When needs manually-operable handwheel; When driving the rotation of valve and final controlling element; Need remove to change and switch handle to top position; Handwheel under this state can't make the source of the gas pipeline form passage because of unexpected reason, thereby causes pneumatic actuator to begin misoperation and drive handwheel rotating.Therefore also thoroughly eliminated and jeopardized the accidents caused possibility of handwheel.Through this structure; Make when handwheel is in manual state; Be worm gear, worm screw contact when driving the worm gear rotation, can't arrive pneumatic actuator and make its work done in order to the source of the gas of control pneumatic actuator work done, thereby effectively protect handwheel with worm screw.
Description of drawings
Fig. 1 is the external structure schematic representation that the clutch type safety of pneumatic actuator of the present invention is switched handwheel;
Fig. 2 is that the clutch type safety of pneumatic actuator of the present invention is switched the structural representation of handwheel before switching;
Fig. 3 is that the clutch type safety of pneumatic actuator of the present invention is switched the structural representation of handwheel after switching;
Fig. 4 is the sectional structure schematic representation that the clutch type safety of pneumatic actuator of the present invention is switched handwheel;
Fig. 5, Fig. 6 are the switching valve and the left part section structural representation that covers after combining that the clutch type safety of pneumatic actuator of the present invention is switched handwheel;
Fig. 7 is the structural representation that the clutch type safety of pneumatic actuator of the present invention is switched the inner switching spool of the switching valve of handwheel.
Among the figure: 1, casing; 2, case lid; 3, handwheel; 4, switch handle; 5, Zuo Gai; 6, switching valve; 7, switch spool; 8, worm screw; 101, source of the gas first hole; 102, source of the gas second hole; 103, source of the gas the 3rd hole; 201, spool first hole; 202, spool second hole; 203, spool the 3rd hole; 204, spool the 4th hole.
Embodiment
Next with reference to Figure of description the clutch type safety of pneumatic actuator of the present invention is switched explanation at length below the handwheel work.
The clutch type safety of pneumatic actuator is switched handwheel; Its structure comprises handwheel 3, switches handle 4, set worm gearing in casing 1, case lid 2 and the inner chamber that casing and case lid constituted; Wherein worm screw 8 two ends all are connected with eccentric shaft, and said switching handle 4 two ends all are inserted on the eccentric semiaxis.Handwheel is fixedly connected on the eccentric semiaxis of a side.The integrated Safeguard that on the eccentric semiaxis of handwheel far-end, is provided with can cut off the source of the gas pipeline automatically under the manual function state.Said Safeguard includes switching spool 7 and covers 5 with switching valve 6 and with the left side that switching valve is assembled together; Switching valve is socketed on the eccentric shaft and is fixed on the casing, switches spool and is fixedly connected on the said eccentric shaft, and rotate with said eccentric shaft.The circumferential surface of said left side lid offers disconnected each other source of the gas first hole 101, source of the gas second hole 102, source of the gas the 3rd hole 103, with the left side lid section that switches the spool next-door neighbour on offer respectively three holes that independently link separately with source of the gas first hole 101, source of the gas second hole 102, source of the gas the 3rd hole 103; Be respectively arranged with spool first hole 201, spool second hole 202, spool the 3rd hole 203, spool the 4th hole 204 on the spool switching, wherein spool first hole 201 is connected with spool second hole 202, and spool the 3rd hole and spool the 4th hole 204 are connected.Said switching handle is in following position and promptly drives valve rod when action automatically with pneumatic actuator; Then source of the gas second hole 102, source of the gas the 3rd hole 103 and spool the 3rd hole 203, spool the 4th hole 204 are communicated with respectively, and source of the gas led to pneumatic actuator again through the passage that is communicated with and drove the pneumatic actuator work done this moment; Drive axle and change when revolving several angle and being positioned at manual plane when switching handle; Then source of the gas first hole 101, source of the gas second hole 102 and spool first hole 201, spool second hole 202 are communicated with; And the exhaust passage being provided to pneumatic actuator, the passage of source of the gas and pneumatic actuator then is cut off.
When being power with the source of the gas, as shown in Figure 2 when driving the valve on the pipeline through pneumatic actuator, switch handle and move to following position.This handwheel is in the servo-actuated state.In its in-house spool the 3rd hole 203,204 holes, spool the 4th hole communicate, thereby make source of the gas second hole 102 keep being communicated with source of the gas the 3rd hole 103.Source of the gas is just through source of the gas second hole 102 and the source of the gas passage that source of the gas the 3rd hole 103 forms under connected state, and the handwheel and the valve that order about final controlling element and drive servo-actuated rotate synchronous.
When needs manually-operable handwheel, when driving the rotation of valve and final controlling element, need remove to change and switch handle to top position, source of the gas second hole 102 and source of the gas the 3rd hole 103 blocking-up, as shown in Figure 3.Handwheel under this state can't make the source of the gas pipeline form passage because of unexpected reason, thereby causes pneumatic actuator to begin misoperation and drive handwheel rotating.Therefore also thoroughly eliminated and jeopardized the accidents caused possibility of handwheel.
Source of the gas first hole 101 and source of the gas second hole 102 are communicated with the gaseous emission that is used for pneumatic actuator after switching.
Source of the gas first hole 101, source of the gas second hole 102, and source of the gas the 3rd hole 103 is positioned at a left side and covers; Spool first hole 201, spool second hole 202, spool the 3rd hole 203,204 in spool the 4th hole are positioned at switches on the spool; Remove to change and switch handle, then drive and switch valve core rotation, and then the source of the gas first hole 101-source of the gas, second hole 102 or the source of the gas second hole 102-source of the gas the 3rd hole 103 passages are provided.
The above embodiment is a kind of of the more preferably concrete mode of execution of the present invention, and common variation that those skilled in the art carries out in technological scheme scope of the present invention and replacement all should be included in protection scope of the present invention.
Claims (4)
1. the clutch type safety of pneumatic actuator is switched handwheel; Its structure mainly comprises handwheel, switches set worm gearing in the inner chamber that handle, casing, case lid and casing and case lid constituted; Wherein the worm screw two ends connects eccentric shaft respectively; Said switching handle is fixedly connected with said eccentric semiaxis; Said handwheel is fixedly connected on the said eccentric semiaxis of a side, it is characterized in that: be provided with away from the eccentric shaft of said handwheel and can under the manual function state, cut off the integrated form Safeguard that the source of the gas pipeline comes pneumatic control automatically.
2. the clutch type safety of pneumatic actuator according to claim 1 is switched handwheel, it is characterized in that: said integrated form Safeguard includes and switches spool and cover with switching valve and with the left side that switching valve is assembled together; Switching valve is socketed on the eccentric semiaxis and is fixed on the casing, switches spool and is fixedly connected on the said eccentric semiaxis, and rotate with said eccentric semiaxis.
3. the clutch type safety of pneumatic actuator according to claim 2 is switched handwheel, it is characterized in that: the circumferential surface of said left side lid offers disconnected each other source of the gas first hole, source of the gas second hole, source of the gas the 3rd hole; And with the left side lid section that switches the spool next-door neighbour on offer respectively three holes that independently link separately with source of the gas first hole, source of the gas second hole, source of the gas the 3rd hole; On the switching spool, be respectively arranged with spool first hole, spool second hole, spool the 3rd hole, spool the 4th hole, wherein spool first hole and spool second hole are connected, and spool the 3rd hole and spool the 4th hole are connected.
4. the clutch type safety of pneumatic actuator according to claim 3 is switched handwheel; It is characterized in that: said switching handle is in following position, promptly desires to drive with pneumatic actuator the valve rod action of valve, when driving turbine shaft idle running; Source of the gas second hole, source of the gas the 3rd hole and spool the 3rd hole, spool the 4th hole are communicated with respectively; The communication passage that this moment, this mechanism of source of the gas process provided is led to pneumatic actuator again, thereby drives the pneumatic actuator work done; Drive eccentric semiaxis and change when revolving several angle and being positioned at manual plane when switching handle; Then source of the gas first hole, source of the gas second hole and spool first hole, spool second hole are communicated with; And the exhaust passage being provided to pneumatic actuator, the passage of source of the gas and pneumatic actuator then is cut off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110132018.3A CN102788192B (en) | 2011-05-20 | 2011-05-20 | Clutch type safe switchover hand wheel mechanism of pneumatic actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110132018.3A CN102788192B (en) | 2011-05-20 | 2011-05-20 | Clutch type safe switchover hand wheel mechanism of pneumatic actuator |
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| CN102788192A true CN102788192A (en) | 2012-11-21 |
| CN102788192B CN102788192B (en) | 2014-07-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110132018.3A Active CN102788192B (en) | 2011-05-20 | 2011-05-20 | Clutch type safe switchover hand wheel mechanism of pneumatic actuator |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103267163A (en) * | 2013-06-05 | 2013-08-28 | 上海宏尔特石化机电设备有限公司 | Gear type pneumatic motor actuator |
| CN104455675A (en) * | 2014-11-27 | 2015-03-25 | 河南煜达阀门制造有限公司 | Sector-shaped worm gear driving device for butterfly valve |
| CN104653847A (en) * | 2015-01-27 | 2015-05-27 | 杭州永盛科技有限公司 | Novel worm gear pneumatic control valve |
| CN104913084A (en) * | 2014-03-11 | 2015-09-16 | 台州巨航自动化设备科技有限公司 | Air source safety stop valve |
| CN105351602A (en) * | 2015-11-13 | 2016-02-24 | 银川英奥特自控有限公司 | Manual and automatic switchover engagement and disengagement device for pneumatic actuator |
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| US4429592A (en) * | 1981-06-05 | 1984-02-07 | The Babcock & Wilcox Company | Valve operator |
| EP0145117A2 (en) * | 1983-08-23 | 1985-06-19 | Keystone International Inc. | Valve device incorporating a switching mechanism |
| JPS62155387A (en) * | 1985-12-26 | 1987-07-10 | Tomoe Gijutsu Kenkyusho:Kk | Device for switching valve operation |
| CN2196220Y (en) * | 1994-08-29 | 1995-05-03 | 温州市东瓯自动化仪表厂 | Pneumatic manual gate valve |
| CN201739607U (en) * | 2010-01-04 | 2011-02-09 | 攀钢集团冶金工程技术有限公司 | Electric valve actuator |
| CN202091612U (en) * | 2011-05-20 | 2011-12-28 | 浙江鼎锋流体自控设备有限公司 | Clutch type safe switching hand wheel mechanism of pneumatic actuator |
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2011
- 2011-05-20 CN CN201110132018.3A patent/CN102788192B/en active Active
Patent Citations (6)
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| US4429592A (en) * | 1981-06-05 | 1984-02-07 | The Babcock & Wilcox Company | Valve operator |
| EP0145117A2 (en) * | 1983-08-23 | 1985-06-19 | Keystone International Inc. | Valve device incorporating a switching mechanism |
| JPS62155387A (en) * | 1985-12-26 | 1987-07-10 | Tomoe Gijutsu Kenkyusho:Kk | Device for switching valve operation |
| CN2196220Y (en) * | 1994-08-29 | 1995-05-03 | 温州市东瓯自动化仪表厂 | Pneumatic manual gate valve |
| CN201739607U (en) * | 2010-01-04 | 2011-02-09 | 攀钢集团冶金工程技术有限公司 | Electric valve actuator |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103267163A (en) * | 2013-06-05 | 2013-08-28 | 上海宏尔特石化机电设备有限公司 | Gear type pneumatic motor actuator |
| CN104913084A (en) * | 2014-03-11 | 2015-09-16 | 台州巨航自动化设备科技有限公司 | Air source safety stop valve |
| CN104455675A (en) * | 2014-11-27 | 2015-03-25 | 河南煜达阀门制造有限公司 | Sector-shaped worm gear driving device for butterfly valve |
| CN104653847A (en) * | 2015-01-27 | 2015-05-27 | 杭州永盛科技有限公司 | Novel worm gear pneumatic control valve |
| CN104653847B (en) * | 2015-01-27 | 2017-04-05 | 杭州永盛科技有限公司 | New type worm wheel pneumatic control valve |
| CN105351602A (en) * | 2015-11-13 | 2016-02-24 | 银川英奥特自控有限公司 | Manual and automatic switchover engagement and disengagement device for pneumatic actuator |
| CN105351602B (en) * | 2015-11-13 | 2018-02-27 | 银川英奥特自控有限公司 | The manual automatic switchover arrangement of clutch of pneumatic actuator |
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| Publication number | Publication date |
|---|---|
| CN102788192B (en) | 2014-07-23 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Clutch type safe switchover hand wheel mechanism of pneumatic actuator Effective date of registration: 20160303 Granted publication date: 20140723 Pledgee: AOKANG Zhejiang silverich investment Company limited by guarantee Pledgor: Zhejiang Dingfeng Fluid Autocontrol Equipment Co., Ltd. Registration number: 2016990000164 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20200520 Granted publication date: 20140723 Pledgee: Zhejiang jinyinfeng Financing Guarantee Co., Ltd Pledgor: ZHEJIANG DINGFENG FLUID AUTOCONTROL EQUIPMENT Co.,Ltd. Registration number: 2016990000164 |
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| PM01 | Change of the registration of the contract for pledge of patent right | ||
| PM01 | Change of the registration of the contract for pledge of patent right |
Change date: 20200520 Registration number: 2016990000164 Pledgee after: Zhejiang jinyinfeng Financing Guarantee Co., Ltd Pledgee before: AOKANG Zhejiang silverich investment Company limited by guarantee |