A regulating control unit for a lifting rod track valve

Abstract

This utility model discloses an adjustment and control unit for a lifting rod track valve, including a linear actuator and a rotary actuator. The moving end of the linear actuator is mounted on a mounting base, and a drive shaft is mounted on the mounting base via a bearing. One end of the drive shaft is fixed to the valve stem, and the linear actuator drives the valve stem to rise and fall. The other end of the drive shaft is equipped with a key shaft, and the rotating end of the rotary actuator is equipped with a bushing for inserting the key shaft. In this utility model, the valve core rotates to open the valve. When closing the valve, the rotary actuator first rotates 90 degrees back, causing the valve stem to rotate, thus closing the valve core. Then, the linear actuator works, causing the valve stem to descend, causing the valve core to tilt forward and fit tightly against the valve body. This provides a good sealing effect after the valve core is closed, and the design is simple and easy to control.

Description

Technical Field

[0001] This utility model relates to the technical field of track valve control, specifically to an adjustment and control unit for a lifting rod track valve. Background Technology

[0002] Ball valves, as a common type of valve, have advantages such as compact structure, light weight, low fluid resistance and loss, and convenient maintenance and operation, and are widely used in media transportation pipelines in various fields. However, existing ball valves have the defect of poor sealing performance after the valve core is closed. In order to ensure a better sealing effect of the valve core, a lift rod track valve is designed. It consists of a C-ball installed between the upper and lower valve stems, and a valve core installed on the C-ball. The rotation of the upper valve stem drives the C-ball to rotate, and the rotating C-ball drives the valve core to rotate, thus achieving the opening and closing function. After the valve core is closed, the upper valve stem can be further pressed down, causing the cylindrical pin to move along the inclined groove, thus pushing the valve core forward and squeezing it against the valve seat for parallel fit, thereby achieving a better sealing effect and reducing leakage. However, there is no convenient adjustment and control device for the valve stem of the lift rod track valve. Therefore, we designed an adjustment and control unit for the lift rod track valve. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides an adjustment and control unit for a lifting rod track valve.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0005] This utility model discloses an adjustment and control unit for a lifting rod track valve, including a linear actuator and a rotary actuator. The moving end of the linear actuator is equipped with a mounting base, and a transmission shaft is mounted on the mounting base via a bearing. One end of the transmission shaft is fixed to the valve stem, and the linear actuator drives the valve stem to move up and down. The other end of the transmission shaft is provided with a key shaft, and the rotating end of the rotary actuator is equipped with a bushing for the key shaft to be inserted.

[0006] It also includes a mounting bracket fixed to the valve body, and both the linear actuator and the rotary actuator are fixed on the mounting bracket. The mounting bracket is also equipped with a displacement sensor for detecting the displacement of the valve stem's lifting distance, and an angle sensor for detecting the rotation angle of the valve stem.

[0007] It also includes a controller, to which the displacement sensor, angle sensor, linear actuator, and rotary actuator are all connected.

[0008] As a preferred technical solution of this utility model, when the valve is opened, the linear actuator works to drive the valve stem to rise a set distance, and then the rotary actuator rotates 90 degrees to drive the valve stem to rotate, so that the valve core rotates to open the valve.

[0009] As a preferred technical solution of this utility model, when closing the valve, the rotary actuator first rotates back 90 degrees to drive the valve stem to rotate, so that the valve core rotates to close the valve. Then, the linear actuator works to drive the valve stem to descend, so that the valve core tilts forward and fits tightly with the valve body.

[0010] As a preferred embodiment of this utility model, the linear actuator is a linear cylinder and the rotary actuator is a rotary cylinder. The mounting bracket is provided with a compression drive mechanism for supplying air to the linear cylinder and the rotary cylinder. The compression drive mechanism is connected to a controller, and the controller controls the linear cylinder and the rotary cylinder to move by controlling the compression drive mechanism.

[0011] As a preferred embodiment of this utility model, a disc is installed at the end of the valve stem, the displacement sensor is fixedly installed on the mounting bracket, the displacement sensor is vertically arranged and parallel to the valve stem, the detection end of the displacement sensor is provided with a vertically downward telescopic rod, the mounting bracket is provided with a limiting sleeve for the telescopic rod to pass through and for vertically limiting the telescopic rod, and the bottom end of the telescopic rod is provided with a pair of mounting blocks arranged on the upper and lower sides of the disc, and rollers that contact the disc are installed on the mounting blocks.

[0012] The beneficial effects of this utility model are:

[0013] The regulating control unit of this type of lifting rod track valve uses a linear actuator and a rotary actuator as power sources to drive the valve stem in linear lifting and rotation, respectively, thereby realizing the lifting and rotation of the valve core. A drive shaft is used, one end of which is fixed to the valve stem, and the linear actuator drives the valve stem to lift and lower. The other end of the drive shaft is equipped with a key shaft, and the rotating end of the rotary actuator is fitted with a bushing for the key shaft to insert into. This ensures that the linear and rotary movements do not interfere with each other. An angle sensor detects the rotation angle of the valve stem, and a displacement sensor detects the lifting distance of the valve stem. When opening the valve, the linear actuator lifts the valve stem a set distance, and then the rotary actuator rotates 90 degrees, causing the valve stem to rotate and open the valve. When closing the valve, the rotary actuator first rotates 90 degrees back, causing the valve stem to rotate and close the valve. Then, the linear actuator lowers the valve stem, causing the valve core to tilt forward and fit tightly against the valve body. This ensures a good sealing effect after the valve core is closed, and the valve has the characteristics of simple structure and easy control. Attached Figure Description

[0014] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0015] Figure 1 This is a schematic diagram of the adjustment and control unit of a lifting rod track valve according to the present invention;

[0016] Figure 2 This is a schematic diagram of the linear actuator of the adjustment and control unit of a lifting rod track valve according to this utility model;

[0017] Figure 3 This is a schematic diagram of the installation of an angle sensor for the adjustment and control unit of a lifting rod track valve according to this utility model;

[0018] Figure 4 This is a schematic diagram of the valve stem linkage structure of the lifting rod track valve, which is the regulating control unit of the lifting rod track valve of this utility model.

[0019] In the diagram: 1. Linear actuator; 2. Rotary actuator; 3. Mounting block; 4. Bearing; 5. Drive shaft; 6. Valve stem; 7. Key shaft; 8. Bushing; 9. Mounting bracket; 10. Displacement sensor; 11. Angle sensor; 12. Controller; 13. Compression drive mechanism; 14. Disc; 16. Telescopic rod; 17. Limit sleeve; 18. Mounting block; 19. Roller. Detailed Implementation

[0020] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0021] Example: Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the present invention discloses an adjustment control unit for a lifting rod track valve, comprising a linear actuator 1 and a rotary actuator 2. The moving end of the linear actuator 1 is mounted with a mounting base 3, and a transmission shaft 5 is mounted on the mounting base 3 via a bearing 4. One end of the transmission shaft 5 is fixed to a valve stem 6, and the linear actuator 1 drives the valve stem 6 to move up and down. The other end of the transmission shaft 5 is provided with a key shaft 7, and the rotating end of the rotary actuator 2 is equipped with a bushing 8 for inserting the key shaft 7.

[0022] It also includes a mounting bracket 9 fixed on the valve body, and both the linear actuator 1 and the rotary actuator 2 are fixed on the mounting bracket 9. The mounting bracket 9 is also provided with a displacement sensor 10 for detecting the displacement of the lifting distance of the valve stem 6, and an angle sensor 11 for detecting the rotation angle of the valve stem 6.

[0023] It also includes a controller 12, and the displacement sensor 10, angle sensor 11, linear actuator 1 and rotary actuator 2 are all connected to the controller 12.

[0024] The angle sensor can be installed on the bushing 8, so that the rotation angle of the bushing 8 can be checked, thereby realizing the detection of the valve stem rotation angle.

[0025] In this embodiment, the linear actuator 1 is a linear cylinder, and the rotary actuator 2 is a rotary cylinder. The mounting bracket 9 is equipped with a compression drive mechanism 13 for supplying air to the linear and rotary cylinders. The compression drive mechanism 13 is connected to the controller 12, and the controller 12 controls the linear and rotary cylinders to move by controlling the compression drive mechanism 13. During the manufacturing process, other types of linear actuators 1 and rotary actuators 2 can be rotated. A displacement sensor is used to monitor the valve stem displacement in real time, and the position signal is fed back to the controller 12, which is a PLC controller. Then, a closed-loop control algorithm (such as PID) is used to dynamically adjust the actuator output to achieve millimeter-level precision positioning. This is easily achievable in existing technologies and ensures tight contact between the valve core and the interface.

[0026] When opening the valve, the linear actuator 1 drives the valve stem 6 to rise a set distance, and then the rotary actuator 2 rotates 90 degrees, causing the valve stem 6 to rotate, thus opening the valve. When closing the valve, the rotary actuator 2 first rotates 90 degrees back, causing the valve stem 6 to rotate, thus closing the valve. Then, the linear actuator 1 drives the valve stem 6 to descend, causing the valve stem to tilt forward and fit tightly against the valve body, thus ensuring a good seal between the valve stem and the valve body.

[0027] Working principle: By setting up a linear actuator 1 and a rotary actuator 2, the valve stem 6 is driven to move linearly up and down and rotate, respectively, thereby realizing the raising and lowering and rotation of the valve core. A drive shaft 5 is connected to the valve stem 6 at one end, and the linear actuator 1 drives the valve stem 6 to move up and down. A key shaft 7 is provided at the other end of the drive shaft 5, and a bushing 8 for inserting the key shaft 7 is installed at the rotating end of the rotary actuator 2. This ensures that the linear and rotary movements do not interfere with each other. Furthermore, an angle sensor 11 monitors the rotation angle of the valve stem 6. The valve stem 6 is moved up and down by a displacement sensor 10. When the valve is open, the linear actuator 1 moves the valve stem 6 up a set distance. Then, the rotary actuator 2 rotates 90 degrees, causing the valve stem 6 to rotate and the valve core to open the valve. When the valve is closed, the rotary actuator 2 first rotates 90 degrees back, causing the valve stem 6 to rotate and the valve core to close the valve. Then, the linear actuator 1 moves the valve stem 6 down, causing the valve core to tilt forward and fit tightly against the valve body. This ensures a good sealing effect after the valve core is closed, and the valve has the characteristics of simple structure and easy control.

[0028] A disc 14 is mounted on the end of the valve stem 6. The displacement sensor 10 is fixedly mounted on the mounting bracket 9, and the displacement sensor 10 is vertically arranged and parallel to the valve stem 6. The detection end of the displacement sensor 10 is provided with a vertically downward telescopic rod 16. The mounting bracket 9 is provided with a limiting sleeve 17 for the telescopic rod 16 to pass through and for vertically limiting the telescopic rod 16. The bottom end of the telescopic rod 16 is provided with a pair of mounting blocks 18 arranged on the upper and lower sides of the disc 14, and the mounting blocks 18 are equipped with a device for controlling the movement of the disc 14. The contact roller 19, driven by the linear actuator 1, causes the valve stem to move up and down. At this time, the valve stem drives the disc to rise and fall. Since the disc is set between the mounting blocks, the rise and fall of the disc causes the telescopic rod to rise and fall. Since the top of the telescopic rod is connected to the detection end of the displacement sensor 10, the rising and falling height of the telescopic rod can be detected, thereby detecting the rising and falling height of the valve stem. The disc has rollers between it and the mounting blocks, so that when the valve stem rotates, it will not cause the mounting blocks to move.

[0029] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A regulating control unit of a poppet rail valve, comprising a linear actuator (1) and a rotary actuator (2), characterized in that, The linear actuator (1) has a mounting base (3) installed on its movable end, and a drive shaft (5) is mounted on the mounting base (3) via a bearing (4). One end of the drive shaft (5) is fixed to the valve stem (6), and the linear actuator (1) drives the valve stem (6) to move up and down. The other end of the drive shaft (5) is provided with a key shaft (7), and the rotating end of the rotary actuator (2) is equipped with a bushing (8) for the key shaft (7) to be inserted. It also includes a mounting bracket (9) fixed on the valve body, and both the linear actuator (1) and the rotary actuator (2) are fixed on the mounting bracket (9). The mounting bracket (9) is also provided with a displacement sensor (10) for detecting the displacement of the lifting distance of the valve stem (6), and the mounting bracket (9) is also provided with an angle sensor (11) for detecting the rotation angle of the valve stem (6). It also includes a controller (12), and the displacement sensor (10), angle sensor (11), linear actuator (1) and rotary actuator (2) are all connected to the controller (12).

2. A pilot control unit for a poppet lever rail valve according to claim 1, characterized in that When the valve is opened, the linear actuator (1) works to drive the valve stem (6) to rise a set distance, and then the rotary actuator (2) rotates 90 degrees to drive the valve stem (6) to rotate, so that the valve core rotates to open the valve.

3. The adjustment and control unit of the lifting rod track valve according to claim 2, characterized in that, When closing the valve, firstly, the rotary actuator (2) rotates back 90 degrees to drive the valve stem (6) to rotate, so that the valve core rotates to close the valve. Then, the linear actuator (1) works to drive the valve stem (6) to descend, so that the valve core tilts forward and fits tightly against the valve body.

4. The adjustment and control unit of the lifting rod track valve according to claim 1, characterized in that, The linear actuator (1) is a linear cylinder, and the rotary actuator (2) is a rotary cylinder. The mounting bracket (9) is provided with a compression drive mechanism (13) for supplying air to the linear cylinder and the rotary cylinder. The compression drive mechanism (13) is connected to the controller (12), and the controller (12) controls the linear cylinder and the rotary cylinder to move by controlling the compression drive mechanism (13).

5. The adjustment and control unit of the lifting rod track valve according to claim 1, characterized in that, The valve stem (6) is equipped with a disc (14) at its end. The displacement sensor (10) is fixedly mounted on the mounting bracket (9). The displacement sensor (10) is vertically arranged and parallel to the valve stem (6). The detection end of the displacement sensor (10) is provided with a vertically downward telescopic rod (16). The mounting bracket (9) is provided with a limiting sleeve (17) for the telescopic rod (16) to pass through and for vertically limiting the telescopic rod (16). The bottom end of the telescopic rod (16) is provided with a pair of mounting blocks (18) arranged on the upper and lower sides of the disc (14). The mounting blocks (18) are equipped with rollers (19) that contact the disc (14).

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