Electric valve actuator

Abstract

The utility model discloses an electric valve actuator which comprises a control pipe, connecting structures are arranged at the two ends of the control pipe, a rotating shaft is rotationally connected into the control pipe, a butterfly valve disc is fixedly connected to the rotating shaft and matched with the inner wall of the control pipe, a working shell is fixedly connected to the outer wall of the upper end of the control pipe, and a valve rod is fixedly connected to the working shell. A rotating motor is fixedly connected to the outer wall of the upper end of the working shell, a motor shaft is arranged on the rotating motor, a power gear is fixedly connected to the end, away from the rotating motor, of the motor shaft, one end of the rotating shaft penetrates through the control pipe, a control gear is fixedly connected to the rotating shaft, and the control gear is meshed with the power gear. And a control assembly is arranged on the working shell. According to the utility model, the service life of the device can be effectively prolonged, so that the adjustment and control work is more accurate and stable.

Description

Technical Field

[0001] The utility model relates to the technical field related to electric valves, in particular to an electric valve actuator. Background Art

[0002] Electric valve actuator refers to a machine that uses electricity as its main energy source to drive valves. It converts electrical energy into mechanical energy through a motor to drive the valve to open, close or adjust. The types of electric actuators mainly include rotary and linear types. The rotary type is suitable for rotary valves, such as butterfly valves, while the linear type is suitable for straight-through and angle valves.

[0003] When working, the rotary electric valve actuator often directly controls the butterfly valve disc to rotate to the specified angle through the motor to complete the control and adjustment work. In this process, since the fluid always impacts the butterfly valve disc, the impact force on the butterfly valve disc is directly transmitted to the internal structure of the motor. Over time, it will cause more damage to the internal components of the motor, and will also cause problems such as unstable positioning control and shaking of the butterfly valve disc.

[0004] To this end, this solution proposes an electric valve actuator to solve the above problems. Utility Model Content

[0005] The utility model aims to solve the problems existing in the prior art and proposes an electric valve actuator.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] An electric valve actuator comprises a control tube, both ends of which are provided with connection structures, a rotating shaft is rotatably connected inside the control tube, a butterfly valve disk is fixedly connected to the rotating shaft, the butterfly valve disk matches the inner wall of the control tube, a working shell is fixedly connected to the outer wall of the upper end of the control tube, a rotating motor is fixedly connected to the outer wall of the upper end of the working shell, a motor shaft is provided on the rotating motor, a power gear is fixedly connected to the end of the motor shaft away from the rotating motor, one end of the rotating shaft passes through the control tube, a control gear is fixedly connected to the rotating shaft, the control gear and the power gear are meshed with each other, and a control assembly is provided on the working shell.

[0008] Preferably, the control component includes a telescopic motor fixedly connected to the outer wall of the upper end of the working shell, the telescopic motor is provided with a telescopic shaft, the end of the telescopic shaft away from the telescopic motor passes through the working shell, a positioning block is fixedly connected to the telescopic shaft, and the control gear is provided with a plurality of positioning holes arranged at equal intervals, and the plurality of positioning holes are matched with the positioning block.

[0009] Preferably, one end of the positioning block close to the control gear is provided with a round head structure.

[0010] Preferably, the connecting structure includes a connecting ring, connecting tubes are fixedly connected to the side walls at both ends of the connecting ring, one of the connecting tubes is slidably connected to the inner wall of the control tube, a combination ring is fixedly connected to the side wall of the control tube close to the connecting ring, a plurality of combination holes are provided on the combination ring, a plurality of combination screws are provided on the two side walls of the connecting ring, a plurality of the combination screws pass through the plurality of combination holes, and a plurality of the combination screws are threadedly connected to a combination nut at one end away from the connecting ring.

[0011] Preferably, a sealing coating is provided on the inner wall of the control tube.

[0012] Preferably, each of the plurality of combined screw rods is sleeved with an elastic gasket.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] In the utility model, the staff uses the rotating motor to operate the power gear to cooperate with the control gear, and then controls the butterfly valve disc to rotate to complete the closing and opening of the control tube and the control of the opening angle. At the same time, the telescopic motor controls the telescopic shaft to push the positioning block into the positioning hole to complete the fixing work of the specified angle. In this way, the impact force on the butterfly valve disc can be effectively and stably offset, the service life of the rotating motor is extended, and the control adjustment work is completed more stably. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A three-dimensional structural schematic diagram of an electric valve actuator proposed by the utility model;

[0016] Figure 2 This is a front structural sectional view of an electric valve actuator proposed by the utility model;

[0017] Figure 3 for Figure 2 A magnified view of the structure in Figure 1.

[0018] In the figure: 1 control tube, 2 rotating shaft, 3 butterfly valve disc, 4 working shell, 5 rotating motor, 6 motor shaft, 7 power gear, 8 control gear, 9 telescopic motor, 10 telescopic shaft, 11 positioning block, 12 positioning hole, 13 connecting ring, 14 connecting tube, 15 combination ring, 16 combination screw, 17 combination nut, 18 elastic gasket, 19 combination hole. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0020] Reference Figure 1-Figure 3 An electric valve actuator includes a control tube 1. A sealing coating is provided on the inner wall of the control tube 1. The sealing coating can effectively prevent the occurrence of fluid leakage problems. Both ends of the control tube 1 are provided with a connection structure. The connection structure includes a connection ring 13. Both end side walls of the connection ring 13 are fixedly connected with connection tubes 14. One of the connection tubes 14 is slidably connected to the inner wall of the control tube 1. A combination ring 15 is fixedly connected to a side wall of the control tube 1 close to the connection ring 13. The combination ring 15 is provided with a plurality of combination holes 19. Both side walls of the connection ring 13 are provided with a plurality of combination screws 16. The plurality of combination screws 16 are provided with a plurality of combination holes 19. A plurality of combination holes 19 are passed through, and a plurality of combination screws 16 are threadedly connected with a combination nut 17 at one end away from the connection ring 13, so that a suitable connection pipe 14 can be selected to cooperate with the control pipe 1 to complete the connection work of the corresponding pipeline, which greatly meets the use needs of the staff. A plurality of combination screws 16 are sleeved with elastic gaskets 18, and the fixing work of the combination nut 17 is made more firm by means of the elastic gaskets 18. A rotating shaft 2 is rotatably connected in the control pipe 1, and a butterfly valve disc 3 is fixedly connected to the rotating shaft 2. The butterfly valve disc 3 matches the inner wall of the control pipe 1, and a working shell 4 is fixedly connected to the outer wall of the upper end of the control pipe 1;

[0021] A rotating motor 5 is fixedly connected to the outer wall of the upper end of the working shell 4, and a motor shaft 6 is provided on the rotating motor 5. A power gear 7 is fixedly connected to the end of the motor shaft 6 away from the rotating motor 5. One end of the rotating shaft 2 passes through the control tube 1, and a control gear 8 is fixedly connected to the rotating shaft 2. The control gear 8 and the power gear 7 are meshed with each other. A control component is provided on the working shell 4, and the control component includes a telescopic motor 9 fixedly connected to the outer wall of the upper end of the working shell 4, and a telescopic shaft 10 is provided on the telescopic motor 9. The end of the telescopic shaft 10 away from the telescopic motor 9 passes through the working shell 4, and a positioning block 11 is fixedly connected to the telescopic shaft 10. A plurality of positioning holes 12 arranged at equal intervals are provided on the control gear 8, and the plurality of positioning holes 12 are all aligned with The positioning block 11 matches, so that the rotating control gear 8 can be positioned and fixed by means of the vertically movable telescopic shaft 10 and the positioning block 11 inserted into the positioning hole 12, which effectively offsets the impact force transmitted to the control gear 8 by the butterfly valve disc 3, ensures the safety of the rotating motor 5, extends the service life of the rotating motor 5, and ensures that the butterfly valve disc 3 will not accidentally rotate and affect the control accuracy. The end of the positioning block 11 close to the control gear 8 is arranged in a round head structure. Before the positioning block 11 is inserted into the positioning hole 12, the control gear 8 may have a slight rotation offset due to the impact. Such a round head setting allows the positioning block 11 to be smoothly inserted into the positioning hole 12, and then completes the fixing work.

[0022] During the use of the utility model, the staff can first select the connecting ring 13 with the connecting pipe 14 of suitable specifications according to the inner diameter of the pipeline to be controlled, and then insert the connecting pipe 14 on the connecting ring 13 into the control pipe 1, insert the combination screw 16 into the combination hole 19, and complete the installation and fixing work with the help of the elastic gasket 18 and the combination nut 17. Then the staff can repeat the above steps to complete the connection and installation work of the connecting pipe 14 on the other side and the corresponding pipeline. When the device is working, the rotating motor 5 can control the motor shaft 6 to drive the power gear 7 to rotate, and then drive the control gear 8 to rotate through the meshing relationship, so that the butterfly valve disc 3 can be driven by the rotating shaft 2 It rotates in the control tube 1 to complete the opening and closing of the control tube 1 and the control of the opening amplitude. After the rotating motor 5 controls the butterfly valve disc 3 to rotate to the specified angle, the telescopic motor 9 will push the positioning block 11 through the telescopic shaft 10, and then the positioning block 11 is inserted into the corresponding positioning hole 12, thus completing the positioning of the control gear 8. With the help of the positioning block 11 and the telescopic shaft 10, the impact of the fluid on the butterfly valve disc 3 can be effectively offset, so that the inside of the rotating motor 5 is not affected by the impact force, which greatly extends the service life of the rotating motor 5. At the same time, it can ensure that the butterfly valve disc 3 can accurately stay at the specified angle, further ensuring the accuracy and stability of the control work.

[0023] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An electric valve actuator, comprising a control tube (1), characterized in that: Both ends of the control tube (1) are provided with connection structures. A rotating shaft (2) is rotatably connected inside the control tube (1). A butterfly valve disc (3) is fixedly connected to the rotating shaft (2). The butterfly valve disc (3) matches the inner wall of the control tube (1). A working shell (4) is fixedly connected to the outer wall of the upper end of the control tube (1). A rotating motor (5) is fixedly connected to the outer wall of the upper end of the working shell (4). A motor shaft (6) is provided on the rotating motor (5). One end of the motor shaft (6) away from the rotating motor (5) is fixedly connected to a power gear (7). One end of the rotating shaft (2) passes through the control tube (1). A control gear (8) is fixedly connected to the rotating shaft (2). The control gear (8) and the power gear (7) are meshed with each other. A control component is provided on the working shell (4).

2. The electric valve actuator according to claim 1, characterized in that: The control assembly comprises a telescopic motor (9) fixedly connected to the outer wall of the upper end of the working shell (4); a telescopic shaft (10) is provided on the telescopic motor (9); an end of the telescopic shaft (10) away from the telescopic motor (9) passes through the working shell (4); a positioning block (11) is fixedly connected to the telescopic shaft (10); and a plurality of positioning holes (12) arranged at equal intervals are provided on the control gear (8); the plurality of positioning holes (12) are matched with the positioning block (11).

3. The electric valve actuator according to claim 2, characterized in that: The end of the positioning block (11) close to the control gear (8) is arranged in a round head structure.

4. The electric valve actuator according to claim 1, characterized in that: The connection structure comprises a connection ring (13), and connection pipes (14) are fixedly connected to the side walls at both ends of the connection ring (13), one of the connection pipes (14) is slidably connected to the inner wall of the control pipe (1), and a combination ring (15) is fixedly connected to the side wall of the control pipe (1) close to the connection ring (13), and a plurality of combination holes (19) are provided on the combination ring (15). A plurality of combination screws (16) are provided on the two side walls of the connection ring (13), wherein a plurality of the combination screws (16) pass through the plurality of combination holes (19), and a combination nut (17) is threadedly connected to one end of the plurality of combination screws (16) away from the connection ring (13).

5. The electric valve actuator according to claim 1, characterized in that: A sealing coating is provided on the inner wall of the control tube (1).

6. The electric valve actuator according to claim 4, characterized in that: The plurality of combined screw rods (16) are all sleeved with elastic gaskets (18).

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