CN212868674U

CN212868674U - Switching part and valve actuator with same

Info

Publication number: CN212868674U
Application number: CN202020984975.3U
Authority: CN
Inventors: 靳义坤; 靳辉
Original assignee: Changzhou Chenglei Valve Technology Co ltd
Current assignee: Changzhou Chenglei Valve Technology Co.,Ltd.
Priority date: 2020-06-02
Filing date: 2020-06-02
Publication date: 2021-04-02
Anticipated expiration: 2030-06-02

Abstract

The utility model discloses a switch part and have its valve actuator belongs to the relevant technical field of valve actuator. Mainly including switching part, switching part is including the lid shell, the manual pivot that the activity set up, the manual spacing axle that slides the setting sets up the manual switching pole on the lid shell with rotating, the interval is provided with first spacing annular and the spacing annular of second in the manual pivot, be equipped with the second dog at the one end of manual pivot, the one end of manual spacing axle is equipped with driven rack, manual switching pole is including holding portion and straight-tooth portion, straight-tooth portion corresponds the meshing with the epaxial driven rack of manual spacing. The utility model discloses a switching part has guaranteed that the manual mode and the electric mode after the valve actuator switches can be in reliable and stable state.

Description

Switching part and valve actuator with same

Technical Field

The utility model relates to a valve actuator technical field that is relevant, concretely relates to switching part and have its valve actuator.

Background

The electric valve actuator is usually provided with a switching component, and the electric valve actuator is used for switching to a manual mode through the switching component when the electric mode cannot be used, so that the valve is manually controlled. Patent numbers: CN201810783619.2 discloses a valve actuator, wherein a handle in a switching device is shaken downwards to drive a toggle member to lift upwards to lift a clutch sleeve, the clutch sleeve is connected with a hand wheel body in a snap-fit manner after lifting, the hand wheel is rotated to drive the hand wheel body to rotate, and then the clutch sleeve is driven to rotate, power is output to an executed element by utilizing the key connection between the clutch sleeve and an output shaft, thereby switching to a manual mode, when an electric mode needs to be switched, a motor drives an electric turbine to rotate, because an eccentric groove is formed on the electric turbine, the lower end of a support member on the switching device can move relatively along the eccentric groove and finally slide out from the eccentric groove, at this moment, a first abutting surface is separated from the electric turbine, the support member no longer plays a role of supporting the toggle member, so that the clutch sleeve falls, the toggle member resets, and then the clutch sleeve is clamped with the electric turbine. However, the above patent solution has the following disadvantages: the clutch sleeve is supported by the support body in a manual mode so that the clutch sleeve is in contact connection with the hand wheel body, the clutch sleeve and the output shaft are driven to rotate by rotating the hand wheel body, and the support body is easy to slide downwards under the action of the downward pressure of the clutch sleeve during the rotation to separate from the hand wheel body, so that the manual mode is unreliable; similarly, in the electric mode, when the clutch sleeve is in contact with the electric worm gear and rotates along with the clutch sleeve, the clutch sleeve is difficult to be tightly connected with the electric worm gear, and the electric mode also lacks reliability.

It is desirable to provide a new switching member and valve actuator having the same.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem who solves: provided are a switching component and a valve actuator with the same, which can realize reliable switching of a manual mode and an electric mode.

In order to solve the technical problem, the utility model discloses a as follows technical scheme be: a switching member comprising a switching member; switching part is including lid shell, hand pivot, manual spacing axle and manual switching pole, be equipped with on the lid shell with hand pivot clearance fit's shaft hole, still be equipped with on the lid shell and supply the gliding slide opening of manual spacing axle, and still be equipped with the second elastic component in the slide opening, be equipped with on the lid shell and supply manual switching pole pivoted carrier hole, correspond with manual spacing axle in the hand pivot and be equipped with first spacing annular and the spacing annular of second, the one end of hand pivot is equipped with the second tooth and inlays, the one end of manual spacing axle is equipped with driven rack, manual switching pole is including holding portion and straight-tooth portion to straight-tooth portion corresponds the meshing with the epaxial driven rack of manual spacing.

Furthermore, the switching part further comprises a travel switch, the travel switch is arranged in the cover shell, a switch baffle is arranged on the travel switch, the switch baffle is rotatably clamped and embedded on the hand rotating shaft, and a control circuit of the travel switch is electrically connected with a motor of the valve actuator.

Furthermore, a first elastic piece is sleeved on a second jaw of the hand rotating shaft.

Furthermore, a framework oil seal and a bearing are arranged on the inner side wall of the shaft hole.

Furthermore, a copper sleeve is arranged on the inner side wall of the shaft hole and between the framework oil seal and the bearing.

Furthermore, a switch bracket is arranged in the cover shell, and the travel switch is arranged on the switch bracket.

Furthermore, a plug is arranged on an outer port of the sliding hole.

Furthermore, a sealing element is arranged at the position, fixedly attached to the valve actuator, of the cover shell, and the sealing element is an O-shaped sealing ring.

The utility model also provides a valve actuator of including above-mentioned switch part.

Compared with other methods, the utility model, beneficial technological effect is: the utility model discloses a switching part and have its valve actuator, including switching part, switching part includes the hand pivot, manual spacing axle and manual switching pole, hand pivot tip is equipped with the second dog, promote hand pivot through the second dog with valve actuator by the executive realization after being connected, manual spacing axle is pegged graft in the second spacing annular of hand pivot, play axial spacing to the hand pivot, guarantee the reliable connection of hand pivot and executive, when switching the electronic mode, rotate manual switching pole and drive manual spacing axle and take off the hand pivot, the manual spacing axle inserts in the first spacing annular on hand pivot after withdrawing hand pivot, play axial limiting effect again to the hand pivot, guarantee that the operation of electronic mode can not be influenced by the hand pivot; overview the switching component of the present invention enables reliable switching of manual and electric modes for a valve actuator.

Drawings

The present invention will be further explained with reference to the drawings and examples.

In the figure: fig. 1 is a schematic structural diagram of a valve actuator according to the present invention;

FIG. 2 is a schematic diagram of a switching element of the valve actuator of FIG. 1;

FIG. 3 is a partially cross-sectional schematic view of the switching member of FIG. 2 in a top view;

in the figure:

100. a switching member; 11. a cover shell; 111. a shaft hole; 112. a slide hole; 113. a bearing hole; 114. framework oil seal; 115. a bearing; 116. a plug; 117. a copper sleeve; 118. a seal member; 12. a hand-operated shaft; 121. a first limit ring groove; 122. a second limit ring groove; 123. a second jaw; 13. a first elastic member; 14. a manual limiting shaft; 141. a driven rack; 15. a second elastic member; 16. a manual switch lever; 161. a straight tooth portion; 162. a holding portion; 17. a retainer ring; 18. a travel switch; 181. a switch bracket; 182. and (4) opening and closing a baffle.

200. An actuator body; 21. an actuator housing; 22. a spline shaft; 221. a first jaw; 23. a worm sleeve; 24. a worm gear; 25. an output shaft; 26. a motor; 261. a drive shaft; 27. a handwheel.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the present application, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1, the valve actuator of the present invention includes an actuator body 200 for being mounted on a valve to open and close, regulate and control the valve, and a switching component 100 mounted on the actuator body 200 for manually operating and controlling the actuator body 200.

Further, in the present embodiment, the actuator main body 200 includes an actuator housing 21, a spline shaft 22 provided in the actuator housing 21, a worm sleeve 23 fitted over the spline shaft 22, a worm wheel 24 provided in the actuator housing 21 and corresponding to the worm sleeve 23, an output shaft 25 inserted through the worm wheel 24, and a motor 26 fixedly mounted outside the actuator housing 21.

The actuator housing 21 is a closed housing structure with a hollow interior, and in other embodiments, the actuator housing 21 may be a split structure to facilitate mounting or dismounting of internal components.

The spline shaft 22 is rotatably disposed in the inner cavity of the actuator housing 21, and both ends of the spline shaft 22 are inserted into bearings (not shown) in the actuator housing 21 corresponding to both ends of the spline shaft 22, and a first jaw 221 is integrally fixed to an end portion of the spline shaft 22 facing one end of the switching member 100.

The inner side wall of the worm housing 23 is provided with a key groove 231 corresponding to the spline of the spline shaft 22, so that the worm housing 23 is fixed in the circumferential direction and the torque on the spline shaft 22 is transmitted to the worm housing 23.

The worm wheel 24 is rotatably disposed inside the actuator housing 21, and is disposed offset to one side of the worm housing 23 and engaged with the worm housing 23.

The output shaft 25 is inserted and fixed in the center of the worm wheel 24, and is circumferentially fixed with the worm wheel 24 by key connection or interference fit, and when the actuator is used and installed, one end of the output shaft 25 extending to the outside of the actuator housing 21 is fixedly connected with an executed element (such as a rotating rod of a valve).

The motor 26 is fixedly installed on the outer side surface of the actuator housing 21, in this embodiment, the motor 26 is coaxially arranged with the spline shaft 22, a driving shaft 261 is arranged on a power output end of the motor 26, and the other end of the driving shaft 261 is fixedly connected with the other end of the spline shaft 22, which is deviated from the first jaw 221, through a coupler.

As shown in fig. 1, in the present embodiment, the switching member 100 is attached to the outside of the actuator case 21 at a position corresponding to the first dog 221 on the spline shaft 22. Referring to fig. 2, in the present embodiment, the switching component 100 includes a cover shell 11, a hand rotating shaft 12 disposed in the cover shell 11, a hand limiting shaft 14 slidably disposed on the cover shell 11, a hand switching lever 16 movably disposed on the cover shell 11, and a travel switch 18 disposed in the cover shell 11.

The center of the cover shell 11 is provided with an axle hole 111 penetrating through two ends of the cover shell 11, one end of the axle hole 111 inside the cover shell 11 is fixed with a framework oil seal 114, the other end of the axle hole 111 inside the cover shell 11 is fixed with a bearing 115, a copper sleeve 117 is fixedly arranged at a coaxial position between the bearing 115 and the framework oil seal 114, in the embodiment, the copper sleeve 117 is an oil-containing copper sleeve, the cover shell 11 is further provided with a slide hole 112 perpendicular to the axle hole 111, one end of the slide hole 112 facing outwards is fixed with a plug 116, the slide hole 112 is communicated with the axle hole 111, the plug 116 can be fixed with an inner hole of the slide hole 112 in a threaded fit manner, the cover shell 11 is provided with a bearing hole 113 intersecting the slide hole 112, the cover shell 11 is further fixedly provided with a switch bracket 181 for installing a travel switch 18, and a sealing element 118 is sleeved at a position fixedly attached to the actuator shell 21 on the cover shell 11 for improving the sealing performance of the connection, in the present embodiment, the seal 118 is an O-ring seal.

The hand rotating shaft 12 is arranged in the shaft hole 111, and the bearing 115, the copper sleeve 117 and the framework oil seal 114 are sequentially sleeved on the hand rotating shaft 12. The frame oil seal 114 is used for isolating the outside of the shaft hole 111 and preventing impurities such as dust from entering and damaging the inner parts of the cover shell 11. The copper bush 117 is used for radially bearing the hand rotating shaft 12, and can lubricate the outer side surface of the hand rotating shaft 12, so that the abrasion of the hand rotating shaft 12 in the use process is reduced, and the bearing 115 is used for improving the rotation flexibility of the hand rotating shaft 12. A first limiting ring groove 121 and a second limiting ring groove 122 are arranged on the hand rotating shaft 12 at intervals corresponding to the sliding hole 112, a second jaw 123 is fixedly arranged at one end of the hand rotating shaft 12 facing the spline shaft 22, the second jaw 123 is correspondingly matched with the first jaw 221 at the end of the spline shaft 22, a first elastic part 13 is sleeved between the first jaw 221 and the second jaw 123, and a hand wheel 27 is fixedly sleeved at the end of the hand rotating shaft 12 extending out of the cover shell 11.

The manual limit shaft 14 is a cylindrical structure and is slidably disposed in the sliding hole 112, a driven rack 141 is integrally and fixedly disposed at one end of the manual limit shaft 14, and a second elastic member 15 is disposed in the sliding hole 112 and between the manual limit shaft 14 and the plug 116.

Referring to fig. 3, the manual switching lever 16 of the present embodiment includes a grip portion 162 and a spur portion 161 connected to one end of the grip portion 162, and in the present embodiment, the grip portion 162 and the spur portion 161 are vertically connected. The spur gear portion 161 is rotatably disposed in the bearing hole 113, and a spur gear portion of the spur gear portion 161 is correspondingly engaged with the driven rack 141 of the manual limiting shaft 14, and a retaining ring 17 disposed on the manual switching lever 16 is fixedly disposed on an inner sidewall of the bearing hole 113 to prevent the manual switching lever 16 from being disengaged from the bearing hole 113.

The travel switch 18 is mounted on a switch bracket 181 in the cover shell 11, a switch baffle 182 is arranged on a contact of the travel switch 18, the switch baffle 182 is rotatably clamped on the hand rotating shaft 12, the switch baffle 182 can move along the axial direction along with the hand rotating shaft 12, and a control circuit of the travel switch 18 is electrically connected with the motor 26 to control the on-off of a circuit of the motor 26.

The working process of the valve actuator of the present invention is described below with reference to the accompanying drawings:

referring to fig. 2, in a normal condition, the valve actuator of the present invention operates in an electric mode, at this time, the hand rotating shaft 12 is located at the rightmost end position, the second jaw 123 on the hand rotating shaft 12 is separated from the first jaw 221 on the spline shaft 22, and the manual limit shaft 14 is inserted into the first limit ring groove 121, at this time, the travel switch 18 is in an open state. The motor 26 drives the spline shaft 22 to rotate through the driving shaft 261, the spline shaft 22 transmits torque to the worm sleeve 23 through key connection, the worm sleeve 23 drives the worm wheel 24 to rotate through meshing, finally, the output shaft 25 fixed at the center of the worm wheel 24 is driven to rotate, the output shaft 25 rotates to drive the executed part to act, and electric regulation and control on the executed part (valve) are achieved.

When the electric mode cannot be used or the manual mode needs to be switched, referring to fig. 2, the holding portion 162 on the manual switching lever 16 is firstly toggled to rotate counterclockwise, so as to drive the spur gear portion 161 to rotate counterclockwise, since the spur gear portion 161 is engaged with the driven rack 141 on the manual limiting shaft 14, the driven rack 141 is driven to move upward against the elastic force of the second elastic member 15, and finally the manual limiting shaft 14 is disengaged from the first limiting ring groove 121 on the manual rotating shaft 12, the axial movement limitation on the manual rotating shaft 12 is removed, then the hand wheel 27 is operated to push the hand wheel 27 in the direction of the actuator 200, so as to drive the manual rotating shaft 12 to move against the elastic force of the first elastic member 13, since the switch baffle 182 is sleeved on the manual rotating shaft 12, when the manual rotating shaft 12 moves leftward, the switch baffle 182 is driven to move leftward and disconnect the control circuit of the travel switch 18, so as to cut off the power of the motor 26, the safety of the manual mode is ensured, with the continuous propulsion of the manual rotating shaft 12, the second jaw 123 at the end of the manual rotating shaft 12 is finally sleeved with the first jaw 221 on the spline shaft 22, so that the manual rotating shaft 12 and the spline shaft 22 are circumferentially and fixedly connected, when the first jaw 221 is connected with the second jaw 123 in a matching manner, the manual limiting shaft 14 moves downwards under the elastic restoring force of the second elastic member 15 and is inserted into the second limiting groove 122, thereby limiting the axial offset of the manual rotating shaft 12, ensuring that the manual rotating shaft 12 cannot axially offset and slide under the manual mode, ensuring the operational reliability of the manual mode, at the moment, the spline shaft 22 can be driven to rotate by rotating the hand wheel 27, the torque transmission is realized by the spline shaft 22 through the worm sleeve 23 on the spline shaft and the meshed worm wheel 24, finally driving the output shaft 25 at the center of the worm wheel 24 to rotate, and driving the executed member (valve) at one end of the output shaft 25 to act, therefore, the valve is manually regulated, and the worm drives the worm wheel 24 to be a labor-saving mechanism, so that manual operation and control are labor-saving.

When the electric mode needs to be switched again, only the manual switching rod 16 in the switching part 100 needs to be pulled to drive the manual limiting shaft 14 to move upwards, and finally the manual limiting shaft 14 is separated from the second limiting ring groove 122 on the manual rotating shaft 12; the hand-rotating shaft 12 drives the switch baffle 182 to move rightwards in the moving process, so that a control circuit of the travel switch 19 is switched on, the motor 26 is switched on at the moment, the circuit of the motor 26 can be switched on after the hand-rotating shaft 12 is separated from the spline shaft 22, the motor 26 cannot be started by mistake to threaten personal safety, torque transmission is realized mainly by meshing the worm sleeve 23 and the worm wheel 24 in the electric mode, and the operation is reliable.

The utility model discloses a switching part and have its valve actuator, including switching part 100, switching part 100 includes manual pivot 12, manual spacing axle 14 and manual switching pole 16, manual pivot 12 tip is equipped with second dog 123, promote manual pivot 12 through second dog 123 and valve actuator by the back of carrying out the realization connection, manual spacing axle 14 is pegged graft in the second spacing annular 122 of manual pivot 12, play axial spacing to manual pivot 12, guarantee the reliable connection of manual pivot 12 and carried out the piece, when switching the electronic mode, rotate manual switching pole 16 and drive manual spacing axle 14 and leave manual pivot 12, withdraw from manual pivot 12 after manual spacing axle 14 inserts in the first spacing annular 121 on manual pivot 12, play the axial limiting effect again to manual pivot 12, guarantee that manual pivot 12 can not influence the operation of electronic mode; overview the switching part and the valve actuator with the same of the present invention can realize reliable switching between manual and electric modes.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. A switching member comprising a switching member (100), characterized in that: the switching part (100) comprises a cover shell (11), a hand rotating shaft (12), a manual limiting shaft (14) and a manual switching rod (16), wherein a shaft hole (111) which is in clearance fit with the hand rotating shaft (12) is formed in the cover shell (11), a sliding hole (112) for the manual limiting shaft (14) to slide is further formed in the cover shell (11), a second elastic part (15) is further arranged in the sliding hole (112), a bearing hole (113) for the manual switching rod (16) to rotate is formed in the cover shell (11), a first limiting annular groove (121) and a second limiting annular groove (122) are correspondingly formed in the hand rotating shaft (12) and the manual limiting shaft (14), a second tooth embedding part (123) is arranged at one end of the hand rotating shaft (12), a driven rack (141) is arranged at one end of the manual limiting shaft (14), and the manual switching rod (16) comprises a holding part (162) and a straight tooth part (161), and the straight tooth part (161) is correspondingly meshed with a driven rack (141) on the manual limiting shaft (14).

2. The switching member according to claim 1, wherein: the switching component (100) further comprises a travel switch (18), the travel switch (18) is arranged in the cover shell (11), a switch baffle (182) is arranged on the travel switch (18), the switch baffle (182) is rotatably clamped and embedded on the hand rotating shaft (12), and a control circuit of the travel switch (18) is electrically connected with a motor of the valve actuator.

3. The switching member according to claim 1, wherein: a first elastic piece (13) is sleeved on a second jaw (123) of the hand rotating shaft (12).

4. The switching member according to claim 1, wherein: and a framework oil seal (114) and a bearing (115) are arranged on the inner side wall of the shaft hole (111).

5. The switching member according to claim 1 or 4, wherein: and a copper sleeve (117) is arranged on the inner side wall of the shaft hole (111) and positioned between the framework oil seal (114) and the bearing (115).

6. The switching member according to claim 2, wherein: a switch bracket (181) is arranged in the cover shell (11), and the travel switch (18) is arranged on the switch bracket (181).

7. The switching member according to claim 1, wherein: and a plug (116) is arranged on the outer port of the sliding hole (112).

8. The switching member according to claim 1, wherein: and a sealing element (118) is arranged at the position fixedly attached to the valve actuator on the cover shell (11), and the sealing element (118) is an O-shaped sealing ring.

9. A valve actuator, comprising: comprising a switching member according to any one of claims 1-8.