Electric actuator for valve

Abstract

The utility model discloses an electric actuator for a valve, and relates to the technical field of engineering elements or parts. The valve electric actuator comprises a valve body, and the upper end of the valve body is fixedly provided with the valve electric actuator. The adjusting assembly comprises a valve element rotating shaft, the surface of the valve element rotating shaft is fixedly connected with a worm wheel limiting block, the surface of the valve element rotating shaft is rotationally connected with a worm wheel, a groove is formed in the surface of the valve element rotating shaft, a first gear is slidably connected into the groove, and the surface of the valve element rotating shaft is fixedly connected with a fixing sleeve. A spring is fixedly connected to the opposite face of the fixing sleeve and the first gear, a connecting rod is fixedly connected to the lower end of the first gear, through movement of the first gear and limiting of the connecting rod by a sliding groove, a worm wheel is conveniently limited, and a driving motor is conveniently used for driving under the power-on condition; and the valve can be conveniently opened or closed by rotating the handle, the working efficiency of the device is improved, and the safety of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of engineering components or parts, and particularly relates to a valve electric actuator. Background Art

[0002] Therefore, the utility model provides a new solution.

[0003] A valve is a pipeline accessory used to open and close pipelines, control the flow direction, and adjust and control the parameters of the transported medium. Currently, some valves are equipped with valve electric actuators to adjust the opening and closing of the valves. A valve electric actuator refers to a machine that uses electric energy as the main energy source to drive the valve.

[0004] The valve electric actuator is driven by electricity. Some valve electric actuators are not equipped with a manual operation mechanism. In the case of power failure, it cannot receive power supply and thus cannot work properly. For some key valves, such as safety valves or emergency cut-off valves, the inability to respond in time after power failure may lead to safety accidents and increase safety risks. Content of the Utility Model

[0005] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art, and to provide a valve electric actuator, which can solve the problem that some valve electric actuators are not equipped with a manual operation mechanism. In the case of power failure, it cannot receive power supply and thus cannot work properly. For some key valves, such as safety valves or emergency cut-off valves, the inability to respond in time after power failure may lead to safety accidents and increase safety risks.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A valve electric actuator, including a valve body, and a valve electric actuator is fixedly installed at the upper end of the valve body;

[0007] An adjusting component, the adjusting component is arranged inside the valve electric actuator, and the adjusting component includes a valve core rotating shaft, and the valve core rotating shaft is rotatably connected inside the valve electric actuator;

[0008] Wherein, a worm gear limiting block is fixedly connected to the surface of the valve core rotating shaft, a worm gear is rotatably connected to the surface of the valve core rotating shaft, a groove is formed on the surface of the valve core rotating shaft, a first gear is slidably connected inside the groove, and a fixed sleeve is fixedly connected to the surface of the valve core rotating shaft;

[0009] Wherein, a spring is fixedly connected to the opposite surfaces of the fixed sleeve and the first gear, a connecting rod is fixedly connected to the lower end of the first gear, a sliding groove is formed on the surface of the worm gear, and the connecting rod is slidably connected with the sliding groove.

[0010] Preferably, the adjusting assembly further includes a third rotating shaft which is rotatably connected inside the valve electric actuator and rotatably penetrates through one inner wall of the valve electric actuator;

[0011] Wherein, a lever is fixedly connected to the left end of the third rotating shaft, a cam is fixedly connected to one end of the third rotating shaft close to the valve core rotating shaft, and a plurality of bearings are rotatably connected inside the cam, and all the plurality of bearings are in contact with the first gear.

[0012] Preferably, the number of the springs, the first gears, the grooves and the chutes is three, which are symmetrically arranged on the surface of the valve core rotating shaft respectively.

[0013] Preferably, a driving motor is fixedly connected to the surface of the valve electric actuator, the output end of the driving motor extends into the valve electric actuator and is fixedly connected with a worm, and the worm meshes with a worm wheel.

[0014] Preferably, a valve core is rotatably connected inside the valve body, the valve core rotating shaft is fixedly connected with the valve core, the valve core is sealed with the inner wall of the valve body, and flanges are respectively fixedly connected to both ends of the valve body.

[0015] Preferably, a first rotating shaft and a second rotating shaft are rotatably connected inside the valve electric actuator, a handle is fixedly connected to the upper end of the first rotating shaft, a second gear is fixedly connected to the surface of the first rotating shaft, and a third gear and a fourth gear are fixedly connected to the surface of the second rotating shaft;

[0016] Wherein, the third gear meshes with the first gear, and the second gear meshes with the fourth gear.

[0017] Compared with the prior art, the beneficial effects of the present utility model are:

[0018] (1) For this valve electric actuator, through the movement of the first gear and the limitation of the connecting rod by the chute, it is convenient to limit the worm wheel, which is convenient to use the driving motor for driving when powered on, and release the limitation of the worm wheel when powered off, which is convenient to open or close the valve by rotating the handle, improving the working efficiency of the device. At the same time, when the driving motor fails, the valve can also be opened or closed by rotating the handle, thus ensuring the safety and stability of the technological process and improving the safety of the device.

[0019] (2) For this valve electric actuator, through the arrangement of the bearings, it is convenient for the first gear to rotate stably during rotation, reducing the friction between the first gear and the cam, improving the service life of the device, the practicability of the device and the efficiency of the device. Description of the Drawings

[0020] The following further describes the present utility model in conjunction with the drawings and embodiments:

[0021] Figure 1 Schematic structural diagram of an electric valve actuator of the present utility model;

[0022] Figure 2 Schematic diagram of the valve core of the present utility model;

[0023] Figure 3 Schematic cross-sectional view of the electric valve actuator of the present utility model;

[0024] Figure 4 Schematic diagram of the valve core rotating shaft of the present utility model.

[0025] Reference numerals: 1, valve body; 2, electric valve actuator; 3, flange; 4, drive motor; 5, worm; 6, valve core rotating shaft; 7, worm gear; 8, valve core; 9, fixed sleeve; 10, spring; 11, first gear; 12, groove; 13, worm gear limit block; 14, connecting rod; 15, chute; 16, first rotating shaft; 17, second rotating shaft; 18, handle; 19, second gear; 20, third gear; 21, fourth gear; 22, lever; 23, third rotating shaft; 24, cam; 25, bearing. Detailed implementation manners

[0026] This part will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the drawings. The function of the drawings is to supplement the description in the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but it should not be construed as a limitation on the protection scope of the present utility model.

[0027] In the description of the present utility model, it should be understood that for the orientation description, such as the orientation or positional relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present utility model.

[0028] In the description of the present utility model, greater than, less than, exceeding, etc. are understood as not including the number itself, and above, below, within, etc. are understood as including the number itself. If there is a description of first and second, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or the sequence relationship of the indicated technical features.

[0029] In the description of the present utility model, unless otherwise clearly defined, words such as setting, installation, connection, etc. should be understood in a broad sense. Those skilled in the art can reasonably determine the specific meanings of the above words in the present utility model in combination with the specific content of the technical solution.

[0030] Please refer to Figures 1-4 Figures 1-4 , the present utility model provides a technical solution: a valve electric actuator, including a valve body 1, a valve electric actuator 2 is fixedly installed at the upper end of the valve body 1, an adjusting assembly, the adjusting assembly is arranged inside the valve electric actuator 2, the adjusting assembly includes a valve core rotating shaft 6, the valve core rotating shaft 6 is rotatably connected inside the valve electric actuator 2, a worm gear limiting block 13 is fixedly connected to the surface of the valve core rotating shaft 6, a worm gear 7 is rotatably connected to the surface of the valve core rotating shaft 6, a groove 12 is formed on the surface of the valve core rotating shaft 6, a first gear 11 is slidably connected inside the groove 12, a fixed sleeve 9 is fixedly connected to the surface of the valve core rotating shaft 6, a spring 10 is fixedly connected to the opposite surfaces of the fixed sleeve 9 and the first gear 11, a connecting rod 14 is fixedly connected to the lower end of the first gear 11, a sliding groove 15 is formed on the surface of the worm gear 7, and the connecting rod 14 is slidably connected with the sliding groove 15.

[0031] The adjusting assembly further includes a third rotating shaft 23, the third rotating shaft 23 is rotatably connected inside the valve electric actuator 2, and the third rotating shaft 23 rotatably penetrates through one inner wall of the valve electric actuator 2, a lever 22 is fixedly connected to the left end of the third rotating shaft 23, a cam 24 is fixedly connected to the end of the third rotating shaft 23 close to the valve core rotating shaft 6, and a plurality of bearings 25 are rotatably connected inside the cam 24, and all the plurality of bearings 25 are in contact with the first gear 11.

[0032] The number of the springs 10, the first gears 11, the grooves 12 and the sliding grooves 15 is three, and they are symmetrically arranged on the surface of the valve core rotating shaft 6 respectively.

[0033] A driving motor 4 is fixedly connected to the surface of the valve electric actuator 2, the output end of the driving motor 4 extends into the valve electric actuator 2, and is fixedly connected with a worm 5, and the worm 5 meshes with the worm gear 7.

[0034] A valve core 8 is rotatably connected inside the valve body 1, the valve core rotating shaft 6 is fixedly connected with the valve core 8, the valve core 8 is sealed with the inner wall of the valve body 1, and flanges 3 are fixedly connected to both ends of the valve body 1 respectively.

[0035] A first rotating shaft 16 and a second rotating shaft 17 are rotatably connected inside the valve electric actuator 2, a handle 18 is fixedly connected to the upper end of the first rotating shaft 16, a second gear 19 is fixedly connected to the surface of the first rotating shaft 16, a third gear 20 and a fourth gear 21 are fixedly connected to the surface of the second rotating shaft 17, the third gear 20 meshes with the first gear 11, and the second gear 19 meshes with the fourth gear 21.

[0036] When using this device, first install the device on the pipeline. When it is necessary to open or close the valve, start the drive motor 4 to drive the worm 5 to rotate. The worm 5 drives the worm gear 7 to rotate, and the worm gear 7 drives the connecting rod 14 and the first gear 11 to rotate. Due to the limitation of the first gear 11 by the groove 12, the valve core rotating shaft 6 is driven to rotate. The valve core rotating shaft 6 drives the valve core 8 to rotate, opening and closing the valve body 1. During the rotation of the valve core 8, the seal between the valve core 8 and the valve body 1 is ensured at the same time to prevent liquid leakage.

[0037] During daily use, a sudden power failure may occur. Since the drive motor is driven by electricity, it is impossible to drive the drive motor in the case of a power failure, so that electric drive cannot be carried out. At this time, just rotate the lever 22. The lever 22 drives the third rotating shaft 23 to rotate. The third rotating shaft 23 drives the cam 24 and the bearing 25 to rotate. The bearing 25 presses the first gear 11, so that the first gear 11 slides inside the groove 12. The first gear 11 drives the connecting rod 14 to move, so that the connecting rod 14 is separated from the chute 15, releasing the limitation of the chute 15 on the connecting rod 14, and the first gear 11 compresses the spring 10. And the first gear 11 meshes with the third gear 20. Rotate the handle 18 to drive the first rotating shaft 16 to rotate. The first rotating shaft 16 drives the second gear 19 to rotate. The second gear 19 drives the third gear 20 to rotate. The third gear 20 drives the second rotating shaft 17 and the third gear 20 to rotate. The third gear 20 drives the first gear 11 to rotate. The first gear 11 drives the valve core rotating shaft 6 and the valve core 8 to rotate, opening or closing the valve.

[0038] When not in use, rotate the lever 22 again to make the first gear 11 reset under the action of the spring 10, so that the connecting rod 14 contacts the chute 15 and limits the worm gear 7.

[0039] At the same time, when the drive motor 4 fails, the valve can also be opened or closed by rotating the handle 18, thereby ensuring the safety and stability of the process flow.

[0040] Furthermore, through the movement of the first gear 11 and the limitation of the connecting rod 14 by the chute 15, it is convenient to limit the worm gear 7, which is convenient to use the drive motor for driving when powered on, and release the limitation on the worm gear 7 in the case of a power failure, which is convenient to open or close the valve by rotating the handle 18, improving the working efficiency of the device. At the same time, when the drive motor 4 fails, the valve can also be opened or closed by rotating the handle 18, thereby ensuring the safety and stability of the process flow and improving the safety of the device.

[0041] With the setting of the bearing 25, it is convenient for the first gear 11 to rotate stably during the rotation process, reduce the friction between the first gear 11 and the cam 24, improve the service life of the device, enhance the practicability of the device, and improve the efficiency of the device.

[0042] Working principle: When using this device, first install the device on the pipeline. When it is necessary to open or close the valve, start the drive motor 4 to drive the worm 5 to rotate. The worm 5 drives the worm wheel 7 to rotate. The worm wheel 7 drives the connecting rod 14 and the first gear 11 to rotate. Due to the limitation of the first gear 11 by the groove 12, the valve core rotating shaft 6 is driven to rotate. The valve core rotating shaft 6 drives the valve core 8 to rotate, opening and closing the valve body 1. During the rotation of the valve core 8, the seal between the valve core 8 and the valve body 1 is ensured at the same time to prevent liquid leakage.

[0043] During daily use, a sudden power outage may occur. Since the drive motor is driven by electricity and cannot be driven in the case of a power outage, that is, electric drive cannot be carried out. At this time, just rotate the lever 22. The lever 22 drives the third rotating shaft 23 to rotate. The third rotating shaft 23 drives the cam 24 and the bearing 25 to rotate. The bearing 25 squeezes the first gear 11, causing the first gear 11 to slide inside the groove 12. The first gear 11 drives the connecting rod 14 to move, causing the connecting rod 14 to separate from the sliding groove 15, releasing the limitation of the sliding groove 15 on the connecting rod 14, and causing the first gear 11 to compress the spring 10. And the first gear 11 meshes with the third gear 20. Rotate the handle 18 to drive the first rotating shaft 16 to rotate. The first rotating shaft 16 drives the second gear 19 to rotate. The second gear 19 drives the third gear 20 to rotate. The third gear 20 drives the second rotating shaft 17 and the third gear 20 to rotate. The third gear 20 drives the first gear 11 to rotate. The first gear 11 drives the valve core rotating shaft 6 and the valve core 8 to rotate, opening or closing the valve.

[0044] When not in use, rotate the lever 22 again to reset the first gear 11 under the action of the spring 10, so that the connecting rod 14 contacts the sliding groove 15 to limit the worm wheel 7.

[0045] At the same time, when the drive motor 4 fails, the valve can also be opened or closed by rotating the handle 18, thereby ensuring the safety and stability of the technological process.

[0046] The above has described the embodiments of the present invention in detail with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the knowledge scope of those of ordinary skill in the art in the said technical field, various changes can also be made without departing from the gist of the present invention.

Claims

1. An electric valve actuator, characterized in that: A valve electric actuator (2) is fixedly installed at the upper end of the valve body (1); An adjustment assembly is arranged inside the valve electric actuator (2). The adjustment assembly includes a valve core rotating shaft (6), and the valve core rotating shaft (6) is rotatably connected inside the valve electric actuator (2); Wherein, a worm gear limit block (13) is fixedly connected to the surface of the valve core rotating shaft (6), a worm gear (7) is rotatably connected to the surface of the valve core rotating shaft (6), a groove (12) is formed on the surface of the valve core rotating shaft (6), a first gear (11) is slidably connected inside the groove (12), and a fixing sleeve (9) is fixedly connected to the surface of the valve core rotating shaft (6); Wherein, a spring (10) is fixedly connected to the opposite surfaces of the fixing sleeve (9) and the first gear (11), a connecting rod (14) is fixedly connected to the lower end of the first gear (11), a sliding groove (15) is formed on the surface of the worm gear (7), and the connecting rod (14) is slidably connected with the sliding groove (15); The adjustment assembly further includes a third rotating shaft (23), and the third rotating shaft (23) is rotatably connected inside the valve electric actuator (2), and the third rotating shaft (23) rotatably penetrates through one inner wall of the valve electric actuator (2); Wherein, a lever (22) is fixedly connected to the left end of the third rotating shaft (23), a cam (24) is fixedly connected to the end of the third rotating shaft (23) close to the valve core rotating shaft (6), and a plurality of bearings (25) are rotatably connected inside the cam (24), and all the plurality of bearings (25) are in contact with the first gear (11); A first rotating shaft (16) and a second rotating shaft (17) are rotatably connected inside the valve electric actuator (2). A handle (18) is fixedly connected to the upper end of the first rotating shaft (16), a second gear (19) is fixedly connected to the surface of the first rotating shaft (16), and a third gear (20) and a fourth gear (21) are fixedly connected to the surface of the second rotating shaft (17); Wherein, the third gear (20) and the first gear (11) are meshed with each other, and the second gear (19) and the fourth gear (21) are meshed with each other.

2. The electric valve actuator according to claim 1, wherein: The number of the springs (10), the first gears (11), the grooves (12) and the sliding grooves (15) is three each, and they are symmetrically arranged on the surface of the valve core rotating shaft (6).

3. The electric valve actuator according to claim 1, characterized in that: A driving motor (4) is fixedly connected to the surface of the valve electric actuator (2). The output end of the driving motor (4) extends into the valve electric actuator (2) and is fixedly connected with a worm (5), and the worm (5) is meshed with the worm gear (7).

4. A valve electric actuator according to claim 1, characterized in that: A valve core (8) is rotatably connected inside the valve body (1). The valve core rotating shaft (6) is fixedly connected with the valve core (8). The valve core (8) is sealed with the inner wall of the valve body (1). Flanges (3) are respectively fixedly connected to both ends of the valve body (1).

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