CN202091612U - Clutch type safe switching hand wheel mechanism of pneumatic actuator - Google Patents
Clutch type safe switching hand wheel mechanism of pneumatic actuator Download PDFInfo
- Publication number
- CN202091612U CN202091612U CN2011201634078U CN201120163407U CN202091612U CN 202091612 U CN202091612 U CN 202091612U CN 2011201634078 U CN2011201634078 U CN 2011201634078U CN 201120163407 U CN201120163407 U CN 201120163407U CN 202091612 U CN202091612 U CN 202091612U
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- spool
- source
- gas
- pneumatic actuator
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Abstract
The utility model discloses a clutch type safe switching hand wheel mechanism of a pneumatic actuator, comprising a hand wheel, a switching handle, a casing, a casing cover, and a worm gearing disposed in an inner cavity formed by the casing and the casing cover. Through moving the hand wheel, a worm disposed in two eccentric half shafts is rotated, driving an output disposed on a turbine to rotate and further achieving the aim of manually driving a valve device by the hand wheel mechanism. When the switching handle is rotated to a manual position, an integrated safety protection device disposed on the eccentric half shaft automatically cuts a gas source pipeline with pneumatic control, preventing the consequence of mechanism damage due to operation fault or sudden connection of gas source. Compared with a convention safety device, the clutch type safe switching hand wheel mechanism is strong in integrity, high in safety and reliable in work.
Description
Technical field
The utility model 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 prior art 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 described worm screw, the handwheel of fixedlying connected, be fixed on the switching handle on the described eccentric semiaxis with a described eccentric semiaxis, when the switching handle was in the position, worm and wheel separated; When the switching handle was moved to the upper part, handwheel was rotated in the worm and wheel combination, drove the worm screw rotation immediately, and worm screw drives the worm gear rotation again.Adopt the handwheel of this structure, worm and wheel in conjunction with the time, 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 destroys.
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 purpose of this utility model is the defective that exists at prior art, provides 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 technological scheme that its technical problem that solves the utility model adopts is: the clutch type safety of pneumatic actuator is switched handwheel, its structure mainly comprises handwheel, switch handle, casing, set worm gearing in the inner chamber that case lid and casing and case lid constituted, wherein the worm screw two ends connects eccentric shaft respectively, described switching handle is fixedlyed connected with described eccentric semiaxis, described handwheel is fixedly connected on the described eccentric semiaxis of a side, is provided with away from the eccentric shaft of described handwheel and can cuts off the integrated form Safeguard that the source of the gas pipeline comes pneumatic control automatically under the manual function state.
Described integrated form Safeguard includes the left side lid that switches spool and switching valve and be assembled together with switching valve; Switching valve is socketed on the eccentric semiaxis and is fixed on the casing, switches spool and is fixedly connected on the described eccentric semiaxis, and rotate with described eccentric semiaxis.
The circumferential surface of described 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; Be respectively arranged with spool first hole, spool second hole, spool the 3rd hole, spool the 4th hole on the switching spool, wherein spool first hole and spool second hole are connected, and spool the 3rd hole and spool the 4th hole are connected.
Described 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 providing the exhaust passage 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 utility model is compared with prior art, has following beneficial effect:
The clutch type safety of the utility model 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, change hands wheel by 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 utility model is integrated and be built on the revolute of worm screw with Safeguard.When manually this device being switched to manual position, the source of the gas pipeline that promptly cuts off pneumatic control automatically is 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, during by the valve on the pneumatic actuator driving pipeline, switching handle and move to following position.This handwheel is in the servo-actuated state.Source of the gas order about final controlling element and drive the handwheel of servo-actuated and the valve rotation 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 cause pneumatic actuator to begin misoperation and drive handwheel rotating.Therefore also thoroughly eliminated and jeopardized the accidents caused possibility of handwheel.By 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 utility model is switched handwheel;
Fig. 2 is that the clutch type safety of pneumatic actuator of the present utility model is switched the structural representation of handwheel before switching;
Fig. 3 is that the clutch type safety of pneumatic actuator of the present utility model 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 utility model 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 utility model is switched handwheel;
Fig. 7 is the structural representation of the switching spool of the clutch type safety of the pneumatic actuator of the present utility model switching valve inside of switching 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 explain below with reference to Figure of description the clutch type safety of pneumatic actuator of the present utility model being switched 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 described 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 is provided with on the eccentric semiaxis of handwheel far-end can cut off the source of the gas pipeline automatically under the manual function state.Described Safeguard includes the left side lid 5 that switches spool 7 and switching valve 6 and be assembled together with switching valve; Switching valve is socketed on the eccentric shaft and is fixed on the casing, switches spool and is fixedly connected on the described eccentric shaft, and rotate with described eccentric shaft.The circumferential surface of described 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 switching spool, wherein spool first hole 201 and spool second hole 202 are connected, and spool the 3rd hole and spool the 4th hole 204 are connected.Described 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 this moment, source of the gas led to the work done of pneumatic actuator driving pneumatic actuator again through the passage that is communicated with; 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 providing the exhaust passage 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, during by the valve on the pneumatic actuator driving pipeline, as shown in Figure 2, switching 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 by 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, order about final controlling element and drive the handwheel of servo-actuated and the valve rotation 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, 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 utility model, and common variation that those skilled in the art carries out in the technical solutions of the utility model scope and replacement all should be included in the protection domain of the present utility model.
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, described switching handle is fixedlyed connected with described eccentric semiaxis, described handwheel is fixedly connected on the described eccentric semiaxis of a side, it is characterized in that: be provided with away from the eccentric shaft of described handwheel and can cut off the integrated form Safeguard that the source of the gas pipeline comes pneumatic control automatically under the manual function state.
2. the clutch type safety of pneumatic actuator according to claim 1 is switched handwheel, it is characterized in that: described integrated form Safeguard includes the left side lid that switches spool and switching valve and be assembled together with switching valve; Switching valve is socketed on the eccentric semiaxis and is fixed on the casing, switches spool and is fixedly connected on the described eccentric semiaxis, and rotate with described 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 described 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; Be respectively arranged with spool first hole, spool second hole, spool the 3rd hole, spool the 4th hole on the switching spool, 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: described 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, 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 providing the exhaust passage 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 |
|---|---|---|---|
| CN2011201634078U CN202091612U (en) | 2011-05-20 | 2011-05-20 | Clutch type safe switching hand wheel mechanism of pneumatic actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201634078U CN202091612U (en) | 2011-05-20 | 2011-05-20 | Clutch type safe switching hand wheel mechanism of pneumatic actuator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202091612U true CN202091612U (en) | 2011-12-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201634078U Expired - Lifetime CN202091612U (en) | 2011-05-20 | 2011-05-20 | Clutch type safe switching hand wheel mechanism of pneumatic actuator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202091612U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102588664A (en) * | 2012-02-29 | 2012-07-18 | 浙江鼎锋流体自控设备有限公司 | Safety hand wheel hand-operation and automatic-operation switching mechanism of pneumatic actuator |
| CN102788192A (en) * | 2011-05-20 | 2012-11-21 | 浙江鼎锋流体自控设备有限公司 | Clutch type safe switchover hand wheel mechanism of pneumatic actuator |
-
2011
- 2011-05-20 CN CN2011201634078U patent/CN202091612U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102788192A (en) * | 2011-05-20 | 2012-11-21 | 浙江鼎锋流体自控设备有限公司 | Clutch type safe switchover hand wheel mechanism of pneumatic actuator |
| CN102788192B (en) * | 2011-05-20 | 2014-07-23 | 浙江鼎锋流体自控设备有限公司 | Clutch type safe switchover hand wheel mechanism of pneumatic actuator |
| CN102588664A (en) * | 2012-02-29 | 2012-07-18 | 浙江鼎锋流体自控设备有限公司 | Safety hand wheel hand-operation and automatic-operation switching mechanism of pneumatic actuator |
| CN102588664B (en) * | 2012-02-29 | 2014-07-30 | 浙江鼎锋流体自控设备有限公司 | Safety hand wheel hand-operation and automatic-operation switching mechanism of pneumatic actuator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20111228 Effective date of abandoning: 20140723 |
|
| RGAV | Abandon patent right to avoid regrant |