CN221121128U

CN221121128U - Valve actuator

Info

Publication number: CN221121128U
Application number: CN202322951318.5U
Authority: CN
Inventors: 汪建华; 汪建国; 汪小燕
Original assignee: Zhejiang Jisheng Valve Co ltd
Current assignee: Zhejiang Jisheng Valve Co ltd
Priority date: 2023-10-31
Filing date: 2023-10-31
Publication date: 2024-06-11
Anticipated expiration: 2033-10-31

Abstract

The utility model discloses a valve actuator, which comprises an actuator shell and a valve body, wherein the actuator shell is provided with a motor transmission shaft and a hand wheel transmission shaft, the actuator shell is provided with a rotation shaft, a fixed gear is arranged on the rotation shaft, the rotation shaft is fixedly connected with a valve rod of the valve body, two groups of gear sets are arranged in the actuator shell, a transmission gear is arranged on a notch gear on the transmission shaft and is provided with a sliding ring, internal teeth meshed with the notch gear are arranged in the sliding ring, the sliding ring can slide on the notch gear, the actuator shell is provided with a control assembly, the control assembly comprises a control shaft and two chucks, the control shaft is arranged on the actuator shell, the control shaft slides in the actuator shell, and the chucks are respectively arranged on the sliding rings of the two groups of gear sets. When the motor is blocked, the motor gear and the motor shaft can be separated when the hand wheel is used for rotating, power is not transmitted, the motor gear idles, and then the hand wheel is used for controlling the valve body to be opened or closed.

Description

Valve actuator

Technical Field

The utility model relates to the field of actuators, in particular to a valve actuator.

Background

The valve is a control component in a fluid conveying system, has the functions of stopping, adjusting, guiding, preventing backflow, stabilizing pressure, splitting flow or overflow pressure relief, and the like, can control the opening and closing of the valve by rotating a handle connected with a valve rod or control the flow of fluid according to requirements, and is now a development trend by using an electric valve to protect the environment and save more energy, wherein the electric actuator is an essential important component in an automatic control system, takes a power supply as power, receives a unified standard signal, inputs the signal and a feedback signal of a position transmitter, automatically operates the ball valve, the angular valve and the like, and completes the automatic adjustment task of the system.

The manual electric switching device of the existing electric actuator is inconvenient to switch and operate, the electric actuator is always connected with the transmission rod, power can be transmitted to the electric actuator when the electric actuator is manually operated by the hand wheel, the operation process is laborious and inconvenient to use, and when the motor shaft is blocked, the electric shaft cannot be separated from the transmission shaft, so that the whole transmission system is always in a blocked state, and the valve cannot be manually opened or closed.

Disclosure of utility model

Aiming at the defects in the prior art, the utility model provides a valve actuator shell which can separate a motor gear from a motor shaft when a motor is blocked and a hand wheel is adopted to rotate, so that power is not transmitted, the motor gear idles, and then the hand wheel is used for controlling the valve body to be opened or closed.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a valve actuator, includes executor casing and valve body, be provided with motor drive shaft and hand wheel transmission shaft on the executor casing, be provided with the rotation axis on the executor casing, be provided with fixed gear on the rotation axis, the valve rod fixed connection of rotation axis and valve body, be provided with two sets of gear train in the executor casing, the gear train includes the transmission shaft, drive gear and notch gear, drive gear sets up on the transmission shaft, notch gear and transmission shaft fixed connection, be provided with the slip ring on the notch gear, be provided with notch gear engaged with internal tooth in the slip ring, the slip ring can slide on the notch gear, a set of transmission shaft and motor drive shaft fixed connection, another set of the transmission shaft adopts bevel gear transmission with the hand wheel transmission shaft, be provided with control assembly on the executor casing, control assembly includes control axle and two chucks, the control axle sets up respectively on the slip ring of two sets of gear train, two chucks are fixed with the control axle is used to the control axle, the control sleeve is last to be provided with switch assembly.

The utility model further provides a boss arranged on the transmission gear, a convex tooth is arranged on the boss, a chamfer is arranged on the end face of the convex tooth, and a chamfer is arranged on the inner tooth arranged on the sliding ring.

The utility model further provides a gear transmission group on the motor shaft and a gear transmission group on the hand wheel shaft for mirror image arrangement.

The utility model further provides the switch assembly which comprises a switch sleeve, a switch shaft and a switch cover, wherein the switch sleeve is fixedly connected with an actuator shell, the switch shaft is fixedly connected with a control shaft, a sliding groove is formed in the switch sleeve, a clamping groove is formed in the sliding groove, the switch shaft slides in the sliding groove, the switch cover is matched with the clamping groove, a spring is arranged in the switch cover, one end of the spring abuts against the switch cover, and the other end of the spring abuts against the switch shaft.

The utility model further provides that the hand wheel transmission shaft is arranged on the side surface of the actuator shell, and the hand wheel transmission shaft is provided with a hand wheel.

In summary, the utility model has the following beneficial effects:

1. When the motor of the actuator shell is blocked, the actuator shell separates the sliding ring on the motor shaft from the transmission gear by the control shaft and simultaneously connects the sliding ring on the hand wheel transmission shaft with the transmission gear, so that the motor shaft can not influence the rotation of the valve rod, and the motion can be transmitted by rotating the hand wheel, so that the valve body is opened or closed.

2. The setting of this executor casing can let the motor when control valve rod rotates for epaxial drive gear idle running of hand wheel transmission does not carry out the transmission motion, does not influence each other between electronic and the manual.

Drawings

FIG. 1 is a schematic view of the overall structure of the present embodiment;

FIG. 2 is a schematic view showing the internal structure of the actuator casing according to the present embodiment;

FIG. 3 is a schematic perspective view of the internal components of the actuator housing of the present embodiment;

FIG. 4 is a schematic perspective view of a sliding ring according to the present embodiment;

Fig. 5 is a schematic perspective view of the transmission gear of the present embodiment;

FIG. 6 is a schematic view showing the internal structure of the switch assembly of the present embodiment;

Reference numerals: 1. an actuator housing; 2. a valve body; 3. a rotation shaft; 4. a transmission shaft; 5. a transmission gear; 6. notch gears; 7. a slip ring; 8. internal teeth; 9. bevel gears; 10. a control shaft; 11. a chuck; 12. a pin shaft; 13. a boss; 14. convex teeth; 16. a switch sleeve; 17. a switching shaft; 18. opening and closing the cover; 19. a sliding groove; 20. a clamping groove; 21. a spring; 22. a hand wheel transmission shaft; 23. a motor drive shaft; 24. a hand wheel; 25. the gear is fixed.

Detailed Description

The present utility model will be described in further detail with reference to the accompanying drawings.

The embodiment discloses a valve actuator, as shown in fig. 1-6, including actuator casing 1 and valve body 2, be provided with motor drive shaft 23 and hand wheel transmission shaft 22 on the actuator casing 1, be provided with rotation axis 3 on the actuator casing 1, be provided with fixed gear 25 on the rotation axis 3, rotation axis 3 and the valve rod fixed connection of valve body 2, be provided with two sets of gear train in the actuator casing 1, the gear train includes transmission shaft 4, drive gear 5 and notch gear 6, drive gear 5 sets up on transmission shaft 4, notch gear 6 and transmission shaft 4 fixed connection, be provided with sliding ring 7 on notch gear 6, be provided with the internal tooth 8 with notch gear 6 meshing in the sliding ring 7, sliding ring 7 can slide on notch gear 6, a set of transmission shaft 4 and motor drive shaft 23 fixed connection, another set of transmission shaft 4 adopts bevel gear 9 transmission with hand wheel transmission shaft 22, be provided with control assembly on the actuator casing 1, control shaft 10 includes control shaft 10 and two chucks 11, control shaft 10 slides in actuator casing 1, chuck 11 sets up respectively on two sets of chuck 11 and is provided with fixed pin roll shaft 1 with the actuator housing 1. The utility model further provides a boss 13 arranged on the transmission gear 5, a convex tooth 14 arranged on the boss 13, a chamfer arranged on the end face of the convex tooth 14, and a chamfer arranged on the internal tooth 8 arranged on the sliding ring 7, wherein the chamfer can enable the sliding ring 7 to be meshed with the convex tooth 14 better, and the locking state can not occur. The control shaft 10 in the actuator shell 1 can drive the chuck 11 to move up and down, the chuck 11 can drive the sliding ring 7 to move on the notch gear 6, when the sliding ring 7 on the motor transmission shaft 23 is meshed with the transmission gear 5, the rotation of the motor transmission shaft 23 can be transferred to the rotation shaft 3, so that the valve rod is driven to rotate, and the valve body 2 is opened and closed; when the motor fails or the motor is blocked, the hand wheel 24 is needed to be used for opening or closing the valve body 2, as long as the control shaft 10 is moved upwards, the sliding ring 7 on the motor transmission shaft 4 is separated from the transmission gear 5, the transmission gear 5 idles on the motor transmission shaft 23, the sliding ring 7 on the hand wheel transmission shaft 22 is meshed with the transmission gear 5, and the hand wheel 24 can be rotated to drive the valve rod to rotate, so that the valve body 2 is opened or closed.

The utility model further provides a gear drive set on the motor drive shaft 23 and a gear drive set mirror image on the hand wheel drive shaft 22. The clutch can be realized when the control shaft 10 moves up and down.

The utility model further provides a switch assembly comprising a switch sleeve 16, a switch shaft 17 and a switch cover 18, wherein the switch sleeve shell 16 is fixedly connected with the actuator body 1, the switch shaft 17 is fixedly connected with the control shaft 10, a sliding groove 19 is arranged on the switch sleeve 16, a clamping groove 20 is arranged on the sliding groove 19, the switch shaft 17 slides in the sliding groove 19, the switch cover 18 is matched with the clamping groove 20, a spring 21 is arranged in the switch cover 18, one end of the spring 21 is propped against the switch cover 18, and the other end of the spring 21 is propped against the switch shaft 17. When the control shaft 10 needs to be moved, the switch cover 18 can slide the switch shaft 17 downwards or upwards after the switch cover 18 comes out of the clamping groove 20, the switch shaft 17 drives the control shaft 10 to move up and down, and the control shaft 10 can be locked at the current position by loosening the switch cover 18 after the control shaft 10 reaches the designated position.

The utility model further provides that a hand wheel transmission shaft 22 is arranged on the side surface of the actuator shell 1, and a hand wheel 24 is arranged on the hand wheel transmission shaft 22. The hand wheel 24 is more convenient to rotate from the side, the space for manual operation 24 to rotate is larger, and the manual operation is more convenient.

The above embodiments are only preferred embodiments of the present utility model, and are not intended to limit the present utility model, and any modifications, equivalent substitutions, improvements, etc. within the design concept of the present utility model should be included in the scope of the present utility model.

Claims

1. The utility model provides a valve actuator, includes actuator casing (1) and valve body (2), actuator casing (1) adopts bolted connection, its characterized in that with valve body (2): the actuator casing (1) is provided with a motor transmission shaft (23) and a hand wheel transmission shaft (22), the actuator casing (1) is provided with a rotating shaft (3), the rotating shaft (3) is provided with a fixed gear (25), the rotating shaft (3) is fixedly connected with a valve rod of the valve body (2), two groups of gear sets are arranged in the actuator casing (1), each gear set comprises a transmission shaft (4), a transmission gear (5) and a notch gear (6), the transmission gears (5) are arranged on the transmission shafts (4), the notch gears (6) are fixedly connected with the transmission shafts (4), the notch gears (6) are provided with sliding rings (7), internal teeth (8) meshed with the notch gears (6) are arranged in the sliding rings (7), one group of the transmission shafts (4) are fixedly connected with the motor transmission shafts (23), the other group of transmission shafts (4) and the hand wheels (22) are driven by bevel gears (9), the actuator casing (1) is provided with a control assembly, the control assembly comprises a control shaft (10) and a chuck (10) are arranged on the actuator casing (1), the control shaft (10) slides in the actuator shell (1), the chucks (11) are respectively arranged on the sliding rings (7) of the two groups of gear sets, the two chucks (11) and the control shaft (10) are fixed by the pin shaft (12), and the actuator shell (1) is provided with a switch assembly.

2. A valve actuator as defined in claim 1, wherein: the transmission gear (5) is provided with a boss (13), the boss (13) is provided with a convex tooth (14), the end face of the convex tooth (14) is provided with a chamfer, and the inner tooth (8) arranged on the sliding ring (7) is provided with a chamfer.

3. A valve actuator as defined in claim 1, wherein: and a gear transmission group on the motor transmission shaft (23) and a gear transmission group on the hand wheel transmission shaft (22) are arranged in a mirror image mode.

4. A valve actuator as defined in claim 1, wherein: the switch assembly comprises a switch sleeve (16), a switch shaft (17) and a switch cover (18), wherein the switch sleeve (16) is fixedly connected with an actuator shell (1), the switch shaft (17) is fixedly connected with a control shaft (10), a sliding groove (19) is formed in the switch sleeve (16), a clamping groove (20) is formed in the sliding groove (19), the switch shaft (17) slides in the sliding groove (19), the switch cover (18) is matched with the clamping groove (20), a spring (21) is arranged in the switch cover (18), one end of the spring (21) abuts against the switch cover (18), and the other end of the spring (21) abuts against the switch shaft (17).

5. A valve actuator as defined in claim 1, wherein: the hand wheel transmission shaft (22) is arranged on the side face of the actuator shell (1), and a hand wheel (24) is arranged on the hand wheel transmission shaft (22).