An electric actuator for regulating a valve

Abstract

The utility model relates to electric actuator technical field especially relates to a kind of electric actuator for regulating valve, including valve pedestal, the inner wall of valve pedestal is fixedly connected with valve seat, the surface of valve seat is respectively provided with flow distribution hole A and flow distribution hole B, the front end of valve seat is fixedly connected with connecting seat, the outside of connecting seat is sequentially rotatably connected with rotary sealing block A and rotary sealing block B;The utility model is intelligently judged flow demand by controller assembly, respectively control servo motor A and servo motor B independent or collaborative action, realize the accurate switching of small flow (only open flow distribution hole A) and large flow (flow distribution hole A and B are simultaneously opened), satisfy the medium conveying demand under different working conditions, and when rotary sealing block A and rotary sealing block B rotate to suitable angle, limit seat and the positioning block with spring reset function constitute mechanical locking mechanism, in target angle automatic carding positioning groove, prevent position deviation due to vibration or pressure fluctuation.

Description

Technical Field

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

[0002] An electric valve actuator is a control mechanism that uses electricity as its primary energy source to drive the opening and closing of a valve. Existing electric valve actuators mainly consist of a housing and an actuator mechanism housed within the housing. The actuator mechanism generally includes a base, a motor mounted on the base, a transmission mechanism, a control circuit board, and a rotating shaft. The motor is connected to the rotating shaft via the transmission mechanism, which drives the rotating shaft to rotate, thereby driving the valve's pivot shaft to rotate the valve core, thus controlling the opening and closing of the valve.

[0003] For example, patent number CN204083434U discloses an electric valve, which includes an upper cover, a lower cover, a bottom cover, a panel, and an antenna mounted on the panel. The upper and bottom covers contain motor drivers, each with a built-in integrated chip. The integrated chip has a large-capacity capacitor for energy storage. The lower cover has a valve body. In the event of a sudden power outage, the large-capacity capacitor supplies power to the drive board on the integrated chip, providing sufficient energy for the drive board to automatically open the valve body. The electric valve is installed in a pipe shaft and is mainly used to control the opening and closing of the valve. The electric valve has the function of automatically opening the valve in the event of a power outage, and also has a manual opening function, allowing the electric valve to be manually opened in case of system failure without affecting normal heating.

[0004] For example, patent number CN213871323U discloses an electric regulating valve. By setting a power generation component, the power of the water flow is used as the operating power of the device to achieve the purpose of generating electricity. By setting a storage block fixedly connected to the top of the power generation component, the power generated by the power generation component is transmitted to the storage block. By setting a support control block, the lifting mechanism can control the lifting control block to move up and down, thereby achieving the purpose of controlling the water flow. By setting a position scale groove and a control transmitter, the valve opening and closing size can be quickly detected, which is convenient for users.

[0005] However, existing electric actuators for regulating valves can only control the opening and closing of electric valves, and cannot adjust the water flow rate inside the electric valves according to actual usage conditions, which can easily lead to leakage or explosion. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides an electric actuator for regulating valves, which solves the problem that existing electric actuators for regulating valves can only control the opening and closing of electric valves, but cannot adjust the water flow rate inside the electric valve according to actual usage conditions, and are prone to leakage or explosion.

[0007] The technical solution of this utility model is as follows: an electric actuator for regulating valves includes a valve base, a valve seat fixedly connected to the inner wall of the valve base, and flow distribution holes A and B respectively opened on the surface of the valve seat. A connecting seat is fixedly connected to the front end of the valve seat, and a rotating sealing block A and a rotating sealing block B are rotatably connected to the outer side of the connecting seat in sequence. A transmission rod B is provided at the front end of the rotating sealing block A, and a servo motor B is fixedly connected to one end of the transmission rod B inside the connecting seat. The servo motor B is used to drive the rotating sealing block A to rotate outside the connecting seat. A transmission rod C is provided at the rear end of the rotating sealing block B, and one end of the transmission rod C extends to the outer side of the valve seat and is rotatably connected to the connecting seat. A servo motor A is fixedly connected to the top of the valve. A controller assembly is fixedly connected to one side of the top of the servo motor A. A transmission rod A is fixedly connected to the output end of the servo motor A. The bottom end of the transmission rod A passes through the valve seat and is rotatably connected to the transmission rod C. When the servo motor A starts, the servo motor A, together with the transmission rods A and C, drives the rotating sealing block B to rotate. Limit seats are provided on the outer sides of the transmission rods B and C. Positioning blocks are movably connected at the intersection of the transmission rods B and C with the limit seats. When the transmission rods B and C rotate to a suitable angle, the positioning blocks on both sides of the transmission rods B and C engage with the inner side of the limit seats to assist in locking the rotation angle of the transmission rods B and C.

[0008] Preferably, the controller assembly has a built-in control unit and a flow monitor. The controller assembly is electrically connected to both servo motor A and servo motor B. When the device is powered on, the controller assembly can control servo motor A and servo motor B respectively.

[0009] Preferably, a waterproof housing is fixedly connected to the outer side of the servo motor B at the front end of the connector, and a waterproof gasket is provided at the intersection of the waterproof housing and the connector.

[0010] Preferably, the valve base and valve seat are an integral structure. The diameter of the flow distribution hole A is half the diameter of the flow distribution hole B. The flow distribution holes A and B are divided into six groups, which are evenly distributed on the surface of the valve seat. The number of rotary sealing blocks A and B is the same as that of the flow distribution holes A and B. The rotary sealing blocks A and B correspond one-to-one with the flow distribution holes A and B. A through hole is opened on the inner wall of the guide block behind the rotary sealing block A. A sealing strip is provided at the intersection of the outer side of the rotary sealing block A and the through hole.

[0011] Preferably, a magnetic connecting block is provided at one end of the rotary sealing block A on the outer end face of the rotary sealing block B, and a magnetic block is provided at the intersection of the rotary sealing block A and the magnetic connecting block. When the rotary sealing block A and the rotary sealing block B are at the same angle, the rotary sealing block A and the magnetic connecting block are in contact with each other. When the required flow rate is small, the servo motor B and the transmission rod B drive the rotary sealing block A to rotate to a suitable angle, and the medium can be conveyed through the through hole and the distribution hole A. When the required flow rate is large, the servo motor A and the transmission rod A drive the rotary sealing block B to rotate to a suitable angle, and the medium can be conveyed through the distribution hole A and the distribution hole B.

[0012] Preferably, a guide block is provided at the rear end of the rotary sealing block B. One end of the guide block is located on the outer surface of the valve seat and has a guide groove. The other end of the guide block extends to the inner side of the guide groove. When the rotary sealing block B moves, the rotary sealing block B rotates in conjunction with the guide block inside the guide groove. The bottom end of the servo motor B and the outer side of the transmission rod C are both provided with bevel gears. When the servo motor A drives the transmission rod A to rotate, the transmission rod A, in conjunction with the bevel gear and the transmission rod C, drives the rotary sealing block B to rotate.

[0013] Preferably, the inner wall of the limiting seat is provided with a positioning groove, one end of the positioning block is the same shape and size as the positioning groove, and the rear end of the positioning block is provided with connecting springs on the inner walls of the transmission rods B and C respectively. The positioning block is movably connected to the transmission rods B and C respectively through the connecting springs. When the transmission rods B and C rotate to a suitable angle, the positioning block cooperates with the connecting springs to be inserted into the inner side of the positioning groove in the limiting seat.

[0014] The beneficial effects of this utility model are:

[0015] This regulating valve uses an electric actuator that intelligently determines the flow demand through the controller assembly. It controls servo motors A and B to operate independently or in concert, achieving precise switching between low flow (only the distribution orifice A is open) and high flow (both distribution orifices A and B are open simultaneously). This meets the media conveying requirements under different operating conditions. The valve also features a separate design for rotary sealing blocks A and B, along with through holes, large and small distribution orifices, and sealing strips. This design ensures precise control at low flow rates and provides a larger flow cross-section at high flow rates. When rotary sealing blocks A and B rotate to the appropriate angle, the limit seat and the positioning block with spring reset function form a mechanical locking mechanism. The block automatically engages with the positioning groove at the target angle, preventing positional deviation due to vibration or pressure fluctuations. Attached Figure Description

[0016] Figure 1 The diagram shown is a three-dimensional structural schematic of this utility model;

[0017] Figure 2 The diagram shown illustrates the internal structure of the valve base of this utility model. Figure 1 ;

[0018] Figure 3 The diagram shown illustrates the internal structure of the valve base of this utility model. Figure 2 ;

[0019] Figure 4 The diagram shown illustrates the internal structure of the valve base of this utility model. Figure 3 ;

[0020] Figure 5 The diagram shown illustrates the structure of the valve seat of this utility model. Figure 1 ;

[0021] Figure 6 The diagram shown illustrates the structure of the valve seat of this utility model. Figure 2 .

[0022] Explanation of reference numerals in the attached drawings: 1. Valve base; 2. Servo motor A; 3. Controller assembly; 4. Transmission rod A; 5. Valve seat; 6. Connecting seat; 7. Rotary sealing block A; 8. Rotary sealing block B; 9. Magnetic connecting block; 10. Through hole; 11. Waterproof housing; 12. Flow distribution hole A; 13. Flow distribution hole B; 14. Servo motor B; 15. Transmission rod B; 16. Limit seat; 17. Transmission rod C; 18. Guide block; 19. Guide groove; 20. Positioning groove; 21. Positioning block; 22. Connecting spring. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1-4This utility model provides an embodiment: an electric actuator for regulating valves, including a valve base 1, a valve seat 5 fixedly connected to the inner wall of the valve base 1, and flow distribution holes A12 and B13 respectively opened on the surface of the valve seat 5. A connecting seat 6 is fixedly connected to the front end of the valve seat 5, and a rotating sealing block A7 and a rotating sealing block B8 are rotatably connected to the outer side of the connecting seat 6 in sequence. A transmission rod B15 is provided at the front end of the rotating sealing block A7, and a servo motor B14 is fixedly connected to one end of the transmission rod B15 inside the connecting seat 6. The servo motor B14 is used to drive the rotating sealing block A7 to rotate outside the connecting seat 6. A transmission rod C17 is provided at the rear end of the rotating sealing block B8, and one end of the transmission rod C17 extends to the outer side of the valve seat 5 and is rotatably connected to the connecting seat 6. The top end of the valve base 1 is fixed. A servo motor A2 is connected, and a controller assembly 3 is fixedly connected to one side of the top of the servo motor A2. A transmission rod A4 is fixedly connected to the output end of the servo motor A2. The bottom end of the transmission rod A4 passes through the valve seat 5 and is rotatably connected to the transmission rod C17. When the servo motor A2 is started, the servo motor A2, together with the transmission rod A4 and the transmission rod C17, drives the rotating sealing block B8 to rotate. Limit seats 16 are provided on the outer side of the transmission rods B15 and C17. Positioning blocks 21 are movably connected at the intersection of the transmission rods B15 and C17 and the limit seats 16. When the transmission rods B15 and C17 rotate to a suitable angle, the positioning blocks 21 on both sides of the transmission rods B15 and C17 are engaged with the inner side of the limit seats 16 to assist in locking the rotation angle of the transmission rods B15 and C17.

[0025] Please see Figures 1-2In this embodiment, the controller assembly 3 integrates a control unit and a flow monitor. The controller assembly 3 is electrically connected to both servo motors A2 and B14. When the device is powered on, the controller assembly 3 can control servo motors A2 and B14 respectively. A waterproof housing 11 is fixedly connected to the outer side of servo motor B14 at the front end of the connecting seat 6. A waterproof gasket is provided at the intersection of the waterproof housing 11 and the connecting seat 6. The controller assembly 3 also integrates a position feedback module, which includes an angle encoder mounted on transmission rods B15 and C17. This encoder monitors the rotation angle of rotary sealing block A7 and rotary sealing block B8 in real time and sends the signal back to the control unit to achieve closed-loop control. The contact surfaces of rotary sealing block A7 and rotary sealing block B8 are covered with a wear-resistant and corrosion-resistant elastic sealing material, which is polytetrafluoroethylene (PTFE), to improve sealing performance and extend service life. The servo motors A2 and... The B14 servo motors are all self-locking motors (according to CN120320523A, a self-locking motor includes a housing, stator magnets, rotor, and motor shaft. Multiple corner sections are set in the polygonal cavity, with each corner section facing the other. Stator magnets are installed in the corner sections one by one. The arc-shaped surfaces of each stator magnet form an installation area to accommodate the rotor, optimizing the magnetic field distribution. Furthermore, grooves are opened on the arc-shaped surfaces of the stator magnets, which divide the stator magnets into several stator poles, causing the air gap magnetic field reluctance to break, forming a discontinuous magnetic field, increasing the number of reluctance pairs, and increasing the magnetic flux density of the rotor. The grooves on each stator magnet are opened in the same position to form a symmetrical stator pole layout, improving the symmetry of the air gap magnetic field, making the cogging torque of the motor greater, and improving the mechanical performance and self-locking performance of the motor. Compared with the motor structure with a screw and nut drive structure, it has lower wear and smaller size, thus adapting to compact structures).

[0026] Please see Figures 3-4In this embodiment, the valve base 1 and the valve seat 5 are an integral structure. The diameter of the flow distribution hole A12 is half the diameter of the flow distribution hole B13. The flow distribution holes A12 and B13 are divided into six groups, which are evenly distributed on the surface of the valve seat 5. The number of rotary sealing blocks A7 and B8 is the same as that of the flow distribution holes A12 and B13. The rotary sealing blocks A7 and B8 correspond one-to-one with the flow distribution holes A12 and B13. A through hole 10 is opened on the inner wall of the guide block 18 behind the rotary sealing block A7. A sealing strip is provided at the intersection of the side and the through hole 10. A magnetic connecting block 9 is provided at one end of the rotating sealing block A7 on the outer end face of the rotating sealing block B8. A magnetic block is provided at the intersection of the rotating sealing block A7 and the magnetic connecting block 9. When the rotating sealing block A7 and the rotating sealing block B8 are at the same angle, the rotating sealing block A7 and the magnetic connecting block 9 are in contact with each other. When the required flow rate is small, the rotating sealing block A7 is rotated to a suitable angle by the servo motor B14 and the transmission rod B15, and the medium can be transported through the through hole 10 and the distribution hole A12. When the required flow rate is large, the servo motor A14 is used to rotate the rotating sealing block A7 to a suitable angle. 2. The rotating sealing block B8 is rotated to a suitable angle by the transmission rod A4, and the medium can be conveyed through the distribution holes A12 and B13. A guide block 18 is provided at the rear end of the rotating sealing block B8. One end of the guide block 18 is located on the outer surface of the valve seat 5 and has a guide groove 19. The other end of the guide block 18 extends to the inner side of the guide groove 19. When the rotating sealing block B8 moves, the rotating sealing block B8 rotates in conjunction with the guide block 18 inside the guide groove 19. The bottom end of the servo motor B14 and the outer side of the transmission rod C17 are both provided with bevel gears. When the servo motor A2 drives the transmission rod A14... 4. When rotating, the transmission rod A4, in conjunction with the bevel gear and transmission rod C17, drives the rotating sealing block B8 to rotate. The inner wall of the limiting seat 16 is provided with a positioning groove 20. One end of the positioning block 21 is the same shape and size as the positioning groove 20. The rear end of the positioning block 21 is located on the inner wall of both the transmission rod B15 and the transmission rod C17 and is provided with a connecting spring 22. The positioning block 21 is movably connected to the transmission rod B15 and the transmission rod C17 respectively through the connecting spring 22. When the transmission rod B15 and the transmission rod C17 rotate to a suitable angle, the positioning block 21, in conjunction with the connecting spring 22, is engaged in the inner side of the positioning groove 20 in the limiting seat 16.

[0027] During operation, connect both ends of the valve base 1 to the pipeline, turn on the power, and start the device. When the medium enters the valve base 1 through the pipeline, the controller assembly 3 can receive the external flow setting command and determine the required flow rate: if the flow rate is small, only the servo motor B14 is activated to drive the rotary seal block A7 to rotate, aligning the through hole 10 with the distribution hole A12; if the flow rate is large, the servo motor A2 is activated to drive the rotary seal block B8 to rotate, opening the distribution hole B13 while keeping the distribution hole A12 open. During rotation, the guide... Block 18 slides along guide groove 19 to stabilize the rotation trajectory. When it rotates to the position, positioning block 21 automatically embeds into positioning groove 20 of limit seat 16 under the action of connecting spring 22 to achieve mechanical locking. Controller assembly 3 confirms the position status through position feedback module and completes the adjustment. Controller assembly 3 also integrates a position feedback module, which includes angle encoders installed on transmission rods B15 and C17 to monitor the rotation angle of rotary sealing block A7 and rotary sealing block B8 in real time and send the signal back to control unit to achieve closed-loop control.

[0028] Compared to the electric valve in document CN204083434U, it includes an upper cover, a lower cover, a bottom cover, a panel, and an antenna mounted on the panel. The upper and bottom covers house motor drivers, each with a built-in integrated chip. The integrated chip contains a large-capacity capacitor for energy storage. The lower cover houses the valve body. In the event of a sudden power outage, the large-capacity capacitor powers the drive board on the integrated chip, providing sufficient energy for the drive board to automatically open the valve body. The electric valve is installed in a pipe shaft and is primarily used to control the opening and closing of the valve. It has the function of automatically opening the valve in the event of a power outage and also has a manual opening function, allowing the electric valve to be manually opened in case of system failure without affecting normal heating.

[0029] CN213871323U describes an electric regulating valve that uses a power generation component to generate electricity by using the power of water flow as the operating power of the device. A storage block is fixedly connected to the top of the power generation component, transmitting the power generated by the component to the storage block. A support control block allows the elevator to control the movement of the control block up and down, thus controlling the water flow. A position scale groove and a control transmitter enable rapid detection of the valve's opening and closing position, facilitating user operation.

[0030] This application uses a controller assembly to intelligently determine flow demand and control servo motors A and B to operate independently or in concert, achieving precise switching between low flow (only distribution hole A is open) and high flow (both distribution holes A and B are open simultaneously). This meets the media conveying requirements under different working conditions. Furthermore, the application employs a separate design for rotary sealing block A and rotary sealing block B, along with through holes, large and small distribution holes, and sealing strips. This ensures precise control at low flow rates and provides a larger flow cross-section at high flow rates. When rotary sealing block A and rotary sealing block B rotate to the appropriate angle, the limit seat and the positioning block with spring reset function form a mechanical locking mechanism, automatically locking into the positioning groove at the target angle to prevent positional deviation due to vibration or pressure fluctuations.

[0031] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An electric actuator for regulating a valve, comprising a valve base (1), characterized in that: A valve seat (5) is fixedly connected to the inner wall of the valve base (1). A flow distribution hole A (12) and a flow distribution hole B (13) are respectively opened on the surface of the valve seat (5). A connecting seat (6) is fixedly connected to the front end of the valve seat (5). A rotating sealing block A (7) and a rotating sealing block B (8) are rotatably connected to the outer side of the connecting seat (6). A transmission rod B (15) is provided at the front end of the rotating sealing block A (7). A servo motor B (14) is fixedly connected to the inner side of the connecting seat (6) at one end of the transmission rod B (15). The servo motor B (14) is used to drive the rotating sealing block A (7) to rotate on the outer side of the connecting seat (6). A transmission rod C (17) is provided at the rear end of the rotating sealing block B (8). One end of the transmission rod C (17) extends to the outer side of the valve seat (5) and is rotatably connected to the connecting seat (6). A servo motor A (2) is fixedly connected to the top end of the valve base (1). A controller assembly (3) is fixedly connected to one side of the end. A transmission rod A (4) is fixedly connected to the output end of the servo motor A (2). The bottom end of the transmission rod A (4) passes through the valve seat (5) and is rotatably connected to the transmission rod C (17). When the servo motor A (2) starts, the servo motor A (2) works with the transmission rod A (4) and the transmission rod C (17) to drive the rotating sealing block B (8) to rotate. Limit seats (16) are provided on the outer side of the transmission rod B (15) and the transmission rod C (17). Positioning blocks (21) are movably connected at the intersection of the transmission rod B (15) and the transmission rod C (17) and the limit seat (16). When the transmission rod B (15) and the transmission rod C (17) rotate to a suitable angle, the positioning blocks (21) on both sides of the transmission rod B (15) and the transmission rod C (17) are engaged in the inner side of the limit seat (16) to assist in locking the rotation angle of the transmission rod B (15) and the transmission rod C (17).

2. The electric actuator for regulating valves according to claim 1, characterized in that: The controller assembly (3) has a built-in control unit and flow monitor. The controller assembly (3) is electrically connected to the servo motor A (2) and the servo motor B (14). When the device is powered on, the servo motor A (2) and the servo motor B (14) can be controlled by the controller assembly (3).

3. The electric actuator for regulating valves according to claim 1, characterized in that: A waterproof housing (11) is fixedly connected to the outside of the servo motor B (14) at the front end of the connector (6), and a waterproof gasket is provided at the intersection of the waterproof housing (11) and the connector (6).

4. The electric actuator for regulating valves according to claim 1, characterized in that: The valve base (1) and valve seat (5) are an integral structure. The diameter of the flow distribution hole A (12) is half the diameter of the flow distribution hole B (13). The flow distribution holes A (12) and B (13) are divided into six groups. The six groups of flow distribution holes A (12) and B (13) are evenly distributed on the surface of the valve seat (5). The number of rotary sealing blocks A (7) and B (8) is the same as that of flow distribution holes A (12) and B (13). The rotary sealing blocks A (7) and B (8) correspond one-to-one with the flow distribution holes A (12) and B (13). A through hole (10) is opened on the inner wall of the guide block (18) behind the rotary sealing block A (7). A sealing strip is provided at the intersection of the outer side of the rotary sealing block A (7) and the through hole (10).

5. The electric actuator for regulating valves according to claim 1, characterized in that: A magnetic connecting block (9) is provided at one end of the rotating sealing block A (7) on the outer end face of the rotating sealing block B (8). A magnetic block is provided at the intersection of the rotating sealing block A (7) and the magnetic connecting block (9). When the rotating sealing block A (7) and the rotating sealing block B (8) are at the same angle, the rotating sealing block A (7) and the magnetic connecting block (9) fit together. When the required flow rate is small, the rotating sealing block A (7) is rotated to a suitable angle by the servo motor B (14) and the transmission rod B (15). The medium can be transported through the through hole (10) and the distribution hole A (12). When the required flow rate is large, the rotating sealing block B (8) is rotated to a suitable angle by the servo motor A (2) and the transmission rod A (4). The medium can be transported through the distribution hole A (12) and the distribution hole B (13).

6. The electric actuator for regulating valves according to claim 1, characterized in that: A guide block (18) is provided at the rear end of the rotary sealing block B (8). One end of the guide block (18) is located on the outer surface of the valve seat (5) and a guide groove (19) is provided. One end of the guide block (18) extends to the inner side of the guide groove (19). When the rotary sealing block B (8) moves, the rotary sealing block B (8) rotates in cooperation with the guide block (18) on the inner side of the guide groove (19). The bottom end of the servo motor B (14) and the outer side of the transmission rod C (17) are both provided with bevel gears. When the servo motor A (2) drives the transmission rod A (4) to rotate, the transmission rod A (4) cooperates with the bevel gear and the transmission rod C (17) to drive the rotary sealing block B (8) to rotate.

7. An electric actuator for a regulating valve according to claim 1, characterized in that: The inner wall of the limiting seat (16) is provided with a positioning groove (20). One end of the positioning block (21) is the same shape and size as the positioning groove (20). The rear end of the positioning block (21) is located on the inner wall of the transmission rod B (15) and the transmission rod C (17) and is provided with a connecting spring (22). The positioning block (21) is movably connected to the transmission rod B (15) and the transmission rod C (17) respectively through the connecting spring (22). When the transmission rod B (15) and the transmission rod C (17) rotate to a suitable angle, the positioning block (21) cooperates with the connecting spring (22) to be inserted into the inner side of the positioning groove (20) in the limiting seat (16).

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