Electric actuator of regulating valve

Abstract

The utility model relates to the technical field of electric actuators, in particular to a regulating valve electric actuator which comprises a manual hand wheel, an actuator shell and a regulating device, the actuator shell is fixedly installed on the lower surface of the manual hand wheel, and the lower surface of the actuator shell is fixedly connected with a driving shaft. An adjusting device is fixedly installed on the side, away from the actuator shell, of the driving shaft, connectors are fixedly connected to the side, away from the driving shaft, of the adjusting device, the inner walls of the connectors are chamfered, the multiple connectors are located at the axis of the driving shaft and arranged in a circumferential array mode, and the adjusting device is fixedly connected with the adjusting device. The lower surface of the actuator shell is fixedly connected with a connecting column, and the outbound surface of the connecting column is fixedly connected with a supporting frame. According to the utility model, through the arrangement of the adjusting assembly, the size of the joint can be effectively adjusted, so that the joint can adapt to adjusting valves of various specifications, the number of purchased actuators of different specifications is greatly reduced, and the purchasing cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of electric actuator technology, and in particular to an electric actuator for a regulating valve. Background Technology

[0002] With the continuous expansion of industrial production scale and the increasing complexity of production processes, the requirements for automated control of production processes are becoming higher and higher. In industrial production, it is necessary to accurately control parameters such as flow rate, pressure, and temperature of various fluid media (such as liquids and gases) to ensure the stability, reliability, and product quality of the production process. As a key device for controlling fluid medium parameters, the performance of the actuator of the regulating valve directly affects the control effect of the entire control system.

[0003] Existing technologies, such as the utility model patent with publication number CN207064772U, disclose an electric actuator for a regulating valve. This patent employs a mechanical manual handwheel, an integrated control circuit board, an actuator housing, a driven DC brushless motor, a gear set, and a return disc spring. The integrated control circuit board, DC brushless motor, gear set, and return disc spring are installed inside the actuator housing. The integrated control circuit board is connected to the DC brushless motor via wiring, and the DC brushless motor is connected to the gear set. The mechanical manual handwheel is installed at the upper end of the actuator housing and is located at the lower part of the housing, connected to the gear set. This utility model is simple to install and easy to debug, requiring no complex manual adjustments, greatly reducing adjustment time. It solves the problem that adjusting the limit switch also requires adjusting the torque of the switching valve, which demands high technical skills from installers and involves long adjustment times.

[0004] Existing electric actuators, such as those mentioned above, have limitations in use due to their fixed connector sizes, making them difficult to adapt to different sizes of control valves. When encountering control valves that require connection to different sized interfaces, they may not be able to be installed and used directly, and a specific actuator that matches them must be found. This could lead to production interruptions or delays in maintenance progress in emergency situations. Utility Model Content

[0005] The purpose of this utility model is to solve the problem that existing technologies have fixed connector sizes, making it difficult to adapt to control valves of different specifications. When encountering control valves that need to be connected to control valves with different sized interfaces, they may not be able to be installed and used directly, and a specific actuator that matches them must be found. This may lead to production interruption or delay in maintenance progress in emergency situations. Therefore, an electric actuator for control valves is proposed.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an electric actuator for a regulating valve, comprising a manual handwheel, an actuator housing, and an adjusting device. The actuator housing is fixedly mounted on the lower surface of the manual handwheel. A drive shaft is fixedly connected to the lower surface of the actuator housing. An adjusting device is fixedly mounted on the side of the drive shaft away from the actuator housing. A connector is fixedly connected to the side of the adjusting device away from the drive shaft. The inner wall of the connector is chamfered. There are multiple connectors, which are arranged in a circumferential array at the axis of the drive shaft. A connecting column is fixedly connected to the lower surface of the actuator housing. A support frame is fixedly connected to the outer surface of the connecting column. An adjusting device is fixedly connected to the lower surface of the support frame. A connecting bracket is fixedly connected to the lower surface of the connecting column. The adjusting device includes a mounting groove. The drive shaft has an internal mounting groove. A limit bracket is fixedly connected to the inner wall of the mounting groove. The limit bracket is arc-shaped.

[0007] Preferably, a driven conical wheel is rotatably connected to the upper surface of the limiting bracket, and a lead screw is fixedly connected to the side of the driven conical wheel near the limiting bracket. A circular hole is opened on the surface of the limiting bracket, and the lead screw is rotatably connected to the inner wall of the circular hole. The limiting bracket facilitates the support of the driven conical wheel and the lead screw to ensure their stability in the working state.

[0008] Preferably, a limiting hole is provided on the side of the drive shaft near the driven conical wheel, and a connecting rod is rotatably connected to the inner wall of the limiting hole. A driving conical wheel is fixedly connected to the side of the connecting rod near the driven conical wheel, and the driving conical wheel meshes with the tooth groove of the driven conical wheel. A knob is fixedly connected to the side of the connecting rod away from the driving conical wheel, and the knob contacts the outer arc surface of the drive shaft. Through the cooperation of the driving conical wheel and the connecting rod, it is convenient for the operator to rotate the knob to drive the driven conical wheel to rotate.

[0009] Preferably, the outer surface of the lead screw is threaded with a threaded sleeve, and the outer surface of the threaded sleeve is provided with a guide groove. The guide groove is arc-shaped, and there are four guide grooves. The four guide grooves are arranged in a circumferential array at the axis of the threaded sleeve, which facilitates the movement of the threaded sleeve through the lead screw.

[0010] Preferably, the drive shaft is fixedly connected to the inner wall of the mounting groove with a protrusion. The protrusion is arc-shaped and slidably connected to the surface of the guide groove. There are four protrusions, which are arranged in a circumferential array at the axis of the threaded sleeve. The cooperation between the protrusion and the guide groove facilitates the guidance of the direction of movement of the threaded sleeve, so as to ensure that the threaded sleeve moves up and down in the mounting groove.

[0011] Preferably, a top cone is fixedly connected to the lower surface of the threaded sleeve. The top cone is slidably connected to the inner wall of the mounting groove. The top cone is tapered and contacts the chamfer of the connector. The top cone facilitates the adjustment of the size of the connector to ensure that the connector can be adapted to regulating valves of different specifications.

[0012] Preferably, a connecting block is fixedly connected to the side of the drive shaft near the connector. The lower surface of the connecting block is provided with a "T" shaped groove. The number of "T" shaped grooves matches the number of connectors. The "T" shaped grooves are arranged in a circumferential array at the axis of the drive shaft. A slider is slidably connected to the inner wall of the "T" shaped groove. The lower surface of the slider is fixedly connected to the connector. The "T" shaped groove facilitates the guidance of the slider's movement direction to ensure that the slider slides within the "T" shaped groove.

[0013] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0014] In this utility model, by setting an adjustment device, when the size of the connector needs to be adjusted, the operator turns the knob clockwise. The knob then drives the connecting rod to rotate, and the rotating connecting rod in turn drives the active conical wheel to rotate. The active conical wheel rotates and meshes with the tooth groove of the driven conical wheel. Then, the driven conical wheel rotates and drives the lead screw to rotate. The rotating lead screw meshes with the tooth groove of the threaded sleeve, and then drives the threaded sleeve to rotate. With the cooperation of the guide groove, the threaded sleeve moves in the direction guided by the convex strip. The movement causes the top cone to move towards the connector and contact the top cone.

[0015] Then, continue moving and pushing the top cone. Under the action of the slider, the top cone slides in the "T" groove and unfolds. When the top cone unfolds to the size of the interface of the new specification control valve, you can stop turning the knob. When the knob stops turning, the position of the lead screw can be locked. By setting the adjustment component, the size of the connector can be effectively adjusted to adapt to a variety of control valve specifications, which greatly reduces the number of actuators of different specifications to be purchased and reduces procurement costs. Attached Figure Description

[0016] Figure 1 This utility model provides a three-dimensional structural schematic diagram of an electric actuator for a regulating valve;

[0017] Figure 2 This utility model provides a bottom view structural diagram of an electric actuator for a regulating valve;

[0018] Figure 3 This utility model provides a schematic diagram of the regulating component structure of an electric actuator for a regulating valve;

[0019] Figure 4This utility model provides a partial structural schematic diagram of the regulating component of an electric actuator for a regulating valve;

[0020] Figure 5 This utility model provides a partial structural schematic diagram of the regulating component of an electric actuator for a regulating valve;

[0021] Figure 6 This utility model proposes an electric actuator for a regulating valve. Figure 4 Schematic diagram of the structure at point A in the middle.

[0022] Legend:

[0023] 1. Manual handwheel; 2. Actuator housing; 3. Drive shaft; 4. Adjustment device; 41. Mounting slot; 42. Limit bracket; 43. Driven conical wheel; 44. Lead screw; 45. Limiting hole; 46. Connecting rod; 47. Driving conical wheel; 48. Knob; 49. Threaded sleeve; 410. Guide groove; 411. Protrusion; 412. Top cone; 413. Connecting block; 414. "T" slot; 415. Slider; 5. Connector; 6. Connecting column; 7. Support frame; 8. Connecting bracket. Detailed Implementation

[0024] Please see Figures 1-6 This utility model provides a technical solution: an electric actuator for a regulating valve, including a manual handwheel 1, an actuator housing 2, and an adjusting device 4. The actuator housing 2 is fixedly installed on the lower surface of the manual handwheel 1. A drive shaft 3 is fixedly connected to the lower surface of the actuator housing 2. An adjusting device 4 is fixedly installed on the side of the drive shaft 3 away from the actuator housing 2. A connector 5 is fixedly connected to the side of the adjusting device 4 away from the drive shaft 3. The inner wall of the connector 5 is chamfered. There are multiple connectors 5, which are arranged in a circumferential array at the axis of the drive shaft 3. A connecting post 6 is fixedly connected to the lower surface of the actuator housing 2. A support frame 7 is fixedly connected to the outer surface of the connecting post 6. The adjusting device 4 is fixedly connected to the lower surface of the support frame 7. A connecting bracket 8 is fixedly connected to the lower surface of the connecting post 6.

[0025] In this embodiment: the adjustment device 4 includes a mounting groove 41, the drive shaft 3 has a mounting groove 41 inside, and a limit bracket 42 is fixedly connected to the inner wall of the mounting groove 41. The limit bracket 42 is arc-shaped.

[0026] Specifically, a driven conical wheel 43 is rotatably connected to the upper surface of the limiting bracket 42, and a lead screw 44 is fixedly connected to the side of the driven conical wheel 43 near the limiting bracket 42. A circular hole is opened on the surface of the limiting bracket 42, and the lead screw 44 is rotatably connected to the inner wall of the circular hole.

[0027] The effect achieved by the above components is that the position of the driven conical wheel 43 and the lead screw 44 is easily supported by the limiting bracket 42 to ensure their stability in the working state.

[0028] Specifically, a limiting hole 45 is provided on the side of the drive shaft 3 near the driven conical wheel 43. A connecting rod 46 is rotatably connected to the inner wall of the limiting hole 45. A driving conical wheel 47 is fixedly connected to the side of the connecting rod 46 near the driven conical wheel 43. The driving conical wheel 47 meshes with the tooth groove of the driven conical wheel 43. A knob 48 is fixedly connected to the side of the connecting rod 46 away from the driving conical wheel 47. The knob 48 contacts the outer arc surface of the drive shaft 3.

[0029] The effect achieved by the above components is that, through the cooperation of the active conical wheel 47 and the connecting rod 46, it is convenient for the operator to turn the knob 48, thereby driving the driven conical wheel 43 to rotate.

[0030] Specifically, the outer surface of the lead screw 44 is threadedly connected to a threaded sleeve 49. The outer surface of the threaded sleeve 49 is provided with a guide groove 410. The guide groove 410 is arc-shaped and there are four guide grooves 410. The four guide grooves 410 are located at the axis of the threaded sleeve 49 and are arranged in a circular array.

[0031] The effect achieved by the above components is that the position of the threaded sleeve 49 can be easily moved via the lead screw 44.

[0032] Specifically, the drive shaft 3 is fixedly connected to the inner wall of the mounting groove 41 with a protrusion 411. The protrusion 411 is arc-shaped and is slidably connected to the surface of the guide groove 410. There are four protrusions 411, which are arranged in a circular array at the axis of the threaded sleeve 49.

[0033] The effect achieved by the above components is that the cooperation between the protrusion 411 and the guide groove 410 facilitates the guidance of the direction of movement of the threaded sleeve 49, so as to ensure that the threaded sleeve 49 moves up and down in the mounting groove 41.

[0034] Specifically, a top cone 412 is fixedly connected to the lower surface of the threaded sleeve 49. The top cone 412 is slidably connected to the inner wall of the mounting groove 41. The top cone 412 is tapered and contacts the chamfer of the connector 5.

[0035] The effect achieved by the above components is that the size of the connector 5 can be easily adjusted by the top cone 412 to ensure that the connector 5 can be adapted to control valves of different specifications.

[0036] Specifically, a connecting block 413 is fixedly connected to the side of the drive shaft 3 near the connector 5. A "T" shaped groove 414 is provided on the lower surface of the connecting block 413. The number of "T" shaped grooves 414 matches the number of connectors 5. The "T" shaped grooves 414 are arranged in a circular array at the axis of the drive shaft 3. A slider 415 is slidably connected to the inner wall of the "T" shaped groove 414. The lower surface of the slider 415 is fixedly connected to the connector 5.

[0037] The effect achieved by the above components is that the "T" groove 414 facilitates the guidance of the direction of movement of the slider 415, so as to ensure that the slider 415 will slide within the "T" groove 414.

[0038] Working principle: When the size of the connector 5 needs to be adjusted, the operator turns the knob 48 clockwise. The knob 48 then drives the connecting rod 46 to rotate. The rotation of the connecting rod 46 in turn drives the driving conical wheel 47 to rotate. The driving conical wheel 47 rotates and meshes with the tooth groove of the driven conical wheel 43. Then, the driven conical wheel 43 rotates and drives the lead screw 44 to rotate. The rotation of the lead screw 44 meshes with the tooth groove of the threaded sleeve 49, which in turn drives the threaded sleeve 49 to rotate. With the cooperation of the guide groove 410, the threaded sleeve 49 moves in the direction guided by the protrusion 411. The movement causes the top cone 412 to move towards the connector 5 and come into contact with the top cone 412.

[0039] Then, the top cone 412 continues to move and push. Under the action of the slider 415, the top cone 412 slides in the "T" groove 414. The top cone 412 slides and unfolds. When it unfolds to the size of the interface of the new specification control valve, the knob 48 can be stopped. When the knob 48 stops rotating, the position of the lead screw 44 can be locked. By setting the adjustment component, the size of the connector 5 can be effectively adjusted so that it can be adapted to a variety of control valve specifications, which greatly reduces the number of actuators of different specifications purchased and reduces the procurement cost.

Claims

1. An electric actuator for regulating valves, comprising a manual hand wheel (1), an actuator housing (2) and regulating means (4), characterized in that: The executor shell (2) is fixedly installed on the lower surface of the manual hand wheel (1), the lower surface of the executor shell (2) is fixedly connected with the driving shaft (3), the side, away from the executor shell (2), of the driving shaft (3) is fixedly installed with the adjusting device (4), the side, away from the driving shaft (3), of the adjusting device (4) is fixedly connected with the joint (5), the inner wall of the joint (5) is inversely beveled, the number of the joint (5) is multiple, multiple joints (5) are circularly arranged at the axis of the driving shaft (3), the lower surface of the executor shell (2) is fixedly connected with the connecting column (6), the outer surface of the connecting column (6) is fixedly connected with the support frame (7), the lower surface of the support frame (7) is fixedly connected with the adjusting device (4), the lower surface of the connecting column (6) is fixedly connected with the connecting frame (8), the adjusting device (4) comprises the installation slot (41), the inside of the driving shaft (3) is provided with the installation slot (41), the inner wall of the installation slot (41) is fixedly connected with the limiting support (42), the limiting support (42) is arc-shaped.

2. A motorised actuator for a control valve according to claim 1, characterised in that: The upper surface of the limiting support (42) is rotatably connected with the driven conical wheel (43), the side, close to the limiting support (42), of the driven conical wheel (43) is fixedly connected with the screw rod (44), the surface of the limiting support (42) is provided with a circular hole, the inner wall of the circular hole is rotatably connected with the screw rod (44).

3. A motorised actuator for a control valve according to claim 1, characterised in that: The side, close to the driven conical wheel (43), of the driving shaft (3) is provided with the limiting hole (45), the inner wall of the limiting hole (45) is rotatably connected with the connecting rod (46), the side, close to the driven conical wheel (43), of the connecting rod (46) is fixedly connected with the driving conical wheel (47), the driving conical wheel (47) is engaged with the tooth groove of the driven conical wheel (43), the side, away from the driving conical wheel (47), of the connecting rod (46) is fixedly connected with the knob (48), the knob (48) is in contact with the outer arc surface of the driving shaft (3).

4. A motorised actuator for a control valve according to claim 2, characterised in that: The outer surface of the screw rod (44) is threadedly connected with the threaded sleeve (49), the outer surface of the threaded sleeve (49) is provided with the guide slot (410), the guide slot (410) is arc-shaped, the number of the guide slot (410) is four, four guide slots (410) are circularly arranged at the axis of the threaded sleeve (49).

5. The electric actuator for regulating valves according to claim 1, characterized in that: The inner wall of the driving shaft (3) is fixedly connected with the convex strip (411) at the installation slot (41), the convex strip (411) is arc-shaped, the convex strip (411) is slidably connected with the surface of the guide slot (410), the number of the convex strip (411) is four, four convex strips (411) are circularly arranged at the axis of the threaded sleeve (49).

6. A motorised actuator for a control valve according to claim 4, characterised in that: The lower surface of the threaded sleeve (49) is fixedly connected with the top cone (412), the top cone (412) is slidably connected with the inner wall of the installation slot (41), the top cone (412) is conical, and the top cone (412) is in contact with the inverse bevel of the joint (5).

7. The electric actuator for regulating valves according to claim 1, characterized in that: The driving shaft (3) is fixedly connected with a connecting block (413) on one side close to the joint (5), a "T" type slot (414) is arranged on the lower surface of the connecting block (413), the number of the "T" type slots (414) is matched with the number of the joints (5), the "T" type slots (414) are arranged in a circumferential array at the shaft center of the driving shaft (3), and the inner wall of the "T" type slot (414) is slidably connected with a sliding block (415), and the lower surface of the sliding block (415) is fixedly connected with the joint (5).

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