Double-clip type butterfly valve

Abstract

The utility model discloses a wafer type butterfly valve which comprises a valve body, a driving box is fixedly arranged at the upper end of the valve body, a vertically upward valve rod is arranged in the valve body and extends and penetrates through the bottom wall of the driving box, a servo motor is fixedly arranged at the upper end of the bottom wall of the driving box, and an electronic controller module is fixedly installed at the upper end of the servo motor. An output shaft of the servo motor is downward, a gear is fixed to a shaft body of the output shaft, the output shaft of the servo motor is fixedly connected with the valve rod, a power supply module is arranged on the rear side of the servo motor, a fixed vertical plate is fixedly arranged on the left side of the power supply module, and a telescopic cylinder is embedded in the fixed vertical plate; a brake tooth piece is fixedly arranged at the end of the telescopic cylinder, the end, provided with teeth, of the brake tooth piece is close to the gear and can be meshed with the gear, self-locking is completed while opening and closing of the butterfly valve are achieved, the telescopic cylinder is matched to extend to drive the brake tooth piece to be close to the gear, the brake tooth piece completes brake limiting on the gear, and stable flow control is conveniently guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of wafer butterfly valves, and particularly relates to a wafer butterfly valve. Background Technique

[0002] The wafer butterfly valve is a flow regulating device used in the flow regulating systems of petroleum, gas, chemical industry, water treatment, and cooling water systems of thermal power plants. The butterfly plate of the wafer butterfly valve is installed in the diameter direction of the pipeline. In the cylindrical channel of the butterfly valve body, the disc-shaped butterfly plate rotates around the axis, which can play a role in flow regulation. The wafer butterfly valve has a simple structure, small volume, and light weight, and is composed of only a few parts;

[0003] For example, a corrosion-resistant wafer butterfly valve disclosed in the authorized publication number CN221257683U includes a wafer butterfly valve body, an electric component, and a sealing component. The wafer butterfly valve body includes a core shaft and a butterfly plate. A protective box is arranged at the top of the wafer butterfly valve body, and a battery box is arranged at the top of the protective box. The sealing component includes a first fixing groove, a first sealing member, a second fixing groove, and a second sealing member. Both the first sealing member and the second sealing member are made of polytetrafluoroethylene material; the electric component includes a bearing, a motor, and a lithium battery. The motor and the lithium battery are respectively fixed in the protective box and the battery box by screws. This device only uses a motor to replace manual control of the opening and closing mechanism, and there is no component for braking the valve stem at this motor. During use, it may cause the valve stem to be unable to be locked, and the butterfly plate is easily impacted and changes its angle, resulting in unstable flow control. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a wafer butterfly valve to solve the problem that there is no component for braking the valve stem at the motor, which may cause the valve stem to be unable to be locked during use, the butterfly plate is easily impacted and changes its angle, resulting in unstable flow control.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A wafer butterfly valve includes a valve body. A drive box is fixedly arranged at the upper end of the valve body. A vertically upward valve stem is arranged inside the valve body. The valve stem extends through the bottom wall of the drive box. A servo motor is fixedly arranged at the upper end of the bottom wall of the drive box. An electronic controller module is fixedly installed at the upper end of the servo motor. The output shaft of the servo motor faces downward and a gear is fixed to the shaft body of the output shaft. The output shaft of the servo motor is fixedly connected to the valve stem. A power supply module is arranged at the rear side of the servo motor. A fixed vertical plate is fixedly arranged on the left side of the power supply module. A telescopic cylinder is embedded inside the fixed vertical plate. A braking tooth piece is fixedly arranged at the end of the telescopic cylinder. One end of the braking tooth piece where the teeth are opened is close to the gear and can be engaged with the gear to complete self-locking while the butterfly valve is opened and closed. Cooperate with the telescopic cylinder to extend and drive the braking tooth piece to approach the gear, so that the braking tooth piece brakes and limits the gear, which is convenient to ensure stable flow control.

[0006] Preferably, a wiring pipe is embedded in the rear end wall of the drive box. The servo motor, the power supply module, the telescopic cylinder, and the electronic controller module are all provided with connectors, which facilitates the subsequent connection of the control lines, conveniently forms a complete control line, and connects with an external control module.

[0007] Preferably, an upper cover is installed on the upper end of the drive box. Docking blocks are fixedly arranged on the upper cover and the outer side end of the drive box. Docking bolts are vertically inserted through the docking blocks to relatively enclose the drive box.

[0008] Preferably, connecting pipes are fixedly connected to both ends of the valve body. A double-headed screw is inserted through the connecting end of the connecting pipe, and connecting nuts are threadedly connected to both ends of the double-headed screw, which facilitates the docking and installation of the valve body and the pipe.

[0009] Preferably, a butterfly flap is arranged inside the valve body. The butterfly flap is fixedly connected to the valve stem, so that the rotation of the valve stem can drive the butterfly flap to rotate, facilitating the adjustment of the angle of the butterfly flap.

[0010] Preferably, valve core stop blocks that are symmetric about the center of the valve body are fixedly arranged on the inner end wall of the valve body, and symmetric reinforcing plates are formed on the upper part of the valve body, preventing the valve core from being overused and affecting the service life. The reinforcing plates can further enhance the strength of the valve body.

[0011] Compared with the prior art, the beneficial effects of the present utility model are:

[0012] By designing components such as a servo motor, a gear, a power supply module, a fixed vertical plate, a telescopic cylinder, a brake tooth piece, and an electronic controller module, the electronic controller module cooperates with the power supply module to drive the servo motor to rotate and drive the butterfly flap to rotate, realizing the opening and closing of the butterfly valve and completing self-locking at the same time, making the valve stem and the butterfly flap not easy to rotate after rotation and positioning. The telescopic cylinder extends to drive the brake tooth piece to approach the gear, so that the brake tooth piece brakes and limits the gear, and at the same time makes the valve stem unable to rotate, locking the valve stem again, which is convenient for ensuring stable flow control. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0014] Figure 2 is a schematic diagram of the position distribution of the valve core stop block, the butterfly flap, and the valve stem of the present utility model;

[0015] Figure 3 is a structural schematic diagram of the connecting pipe of the present utility model;

[0016] Figure 4 is a schematic diagram of the internal structure of the drive box of the present utility model.

[0017] In the figure: 1. Valve body; 2. Double-headed screw; 3. Connecting nut; 4. Connecting pipe; 5. Spool stopper; 6. Butterfly flap; 7. Valve stem; 8. Reinforcing plate; 9. Drive box; 10. Docking block; 11. Upper cover; 12. Docking bolt; 13. Servo motor; 14. Gear; 15. Power supply module; 16. Fixed vertical plate; 17. Telescopic cylinder; 18. Brake tooth piece; 19. Electronic controller module; 20. Wiring pipe. Detailed implementation manner

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention.

[0019] Please refer to Figures 1-4 , the present invention provides a wafer butterfly valve, including a valve body 1. A drive box 9 is fixedly arranged at the upper end of the valve body 1. A wiring pipe 20 is embedded in the rear end wall of the drive box 9. Here, the wiring pipe 20 is used for leading out internal lines and connecting with an external controller module. An upper cover 11 is installed at the upper end of the drive box 9. Docking blocks 10 are fixedly arranged on the outer sides of the upper cover 11 and the drive box 9. Docking bolts 12 are vertically penetrated through the docking blocks 10, so that the drive box 9 is relatively sealed. A vertically upward valve stem 7 is arranged inside the valve body 1. A shaft sleeve for facilitating the rotation of the valve stem 7 and an O-ring for sealing are arranged at the contact part between the valve stem 7 and the inside of the valve body 1. The valve stem 7 extends through the bottom wall of the drive box 9. A rotating bearing is arranged at the contact part between the valve stem 7 and the drive box 9 to ensure the flexible rotation of the valve stem 7. A servo motor 13 is fixedly arranged at the upper end of the bottom wall of the drive box 9. An electronic controller module 19 is fixedly installed at the upper end of the servo motor 13, which is used to control the forward and reverse rotation, rotation amplitude and self-locking after stopping of the servo motor 13. The output shaft of the servo motor 13 faces downward and a gear 14 is fixed on the shaft body of the output shaft. The output shaft of the servo motor 13 is fixedly connected with the valve stem 7. A power supply module 15 is arranged at the rear side of the servo motor 13. A fixed vertical plate 16 is fixedly arranged on the left side of the power supply module 15. A telescopic cylinder 17 is embedded inside the fixed vertical plate 16. The telescopic cylinder 17 is an electric cylinder body, and the telescopic operation of the telescopic cylinder 17 can be completed through the power supply module 15. A brake tooth piece 18 is fixedly arranged at the end of the telescopic cylinder 17. One end of the tooth teeth of the brake tooth piece 18 is close to the gear 14 and can be engaged with the gear 14 to complete the positioning and secondary locking of the valve stem 7. Connecting heads are arranged on the servo motor 13, the power supply module 15, the telescopic cylinder 17 and the electronic controller module 19, which is convenient for subsequent connection of control lines;

[0020] Before using the device, first turn the docking bolt 12 to remove it from the docking block 10, then remove the upper cover 11. Use the connecting wires to connect the connectors on the servo motor 13, power supply module 15, telescopic cylinder 17, and electronic controller module 19 according to the usage requirements. Then, lead out the wires that need to be connected to the external controller module from the wiring pipe 20 and connect them to the controller module. Then reinstall the upper cover 11. Control the rotation of the servo motor 13 through the external controller module. When the servo motor 13 rotates, the valve stem 7 rotates. The rotation of the valve stem 7 drives the butterfly valve flap 6 to rotate. After the butterfly valve flap 6 rotates, a passage is left for the liquid to pass through. Then, control the telescopic cylinder 17 to extend through the controller module, driving the brake tooth piece 18 to approach the gear 14 to complete the limit of the gear 14 so that it cannot rotate, and complete the secondary positioning of the valve stem 7.

[0021] Both ends of the valve body 1 are fixedly connected with connecting pipes 4. The connecting ends of the connecting pipes 4 are welded with connecting flanges. The connecting ends of the connecting pipes 4 are provided with double-headed screws 2. Both ends of the double-headed screws 2 are threadedly connected with connecting nuts 3. A butterfly valve flap 6 is arranged inside the valve body 1. The butterfly valve flap 6 is fixedly connected with the valve stem 7. The rotation of the valve stem 7 can drive the butterfly valve flap 6 to rotate, facilitating the adjustment of the angle of the butterfly valve flap 6. The inner end wall of the valve body 1 is fixedly provided with valve core stop blocks 5 that are centrosymmetric about the center of the valve body 1 to limit the rotation direction of the valve core and prevent overuse. Symmetric reinforcing plates 8 are formed on the upper part of the valve body 1. The reinforcing plates 8 can further strengthen the strength of the valve body 1 and facilitate the installation of the docking between the valve body 1 and the connecting pipes 4.

[0022] When docking with the connecting pipe 4, align the through hole on the valve body 1 with the mounting holes on the flange of the connecting end of the connecting pipe 4, pass the double-headed screw 2 through the mounting holes, and then screw on the connecting nut 3 to complete the docking.

[0023] When the embodiment of the present application is in use: Align the through hole on the valve body 1 with the mounting holes on the flange of the connecting end of the connecting pipe 4, pass the double-headed screw 2 through the mounting holes, and then screw on the connecting nut 3 to complete the docking. According to actual requirements, use the connecting wires to connect the connectors on the servo motor 13, power supply module 15, telescopic cylinder 17, and electronic controller module 19 according to the usage requirements. Then, lead out the wires that need to be connected to the external controller module from the wiring pipe 20 and connect them to the controller module. Then reinstall the upper cover 11. Control the rotation of the servo motor 13 through the external controller module. When the servo motor 13 rotates, the valve stem 7 rotates. The rotation of the valve stem 7 drives the butterfly valve flap 6 to rotate. After the butterfly valve flap 6 rotates, a passage is left for the liquid to pass through. Then, control the telescopic cylinder 17 to extend through the controller module, driving the brake tooth piece 18 to approach the gear 14 to complete the limit of the gear 14 so that it cannot rotate, and complete the secondary positioning of the valve stem 7. When the valve stem 7 and the butterfly valve flap 6 are reset, the telescopic cylinder 17 first contracts to release the restriction of the brake tooth piece 18 on the gear 14.

[0024] Although the present 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 perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A wafer-type butterfly valve, comprising a valve body (1), characterized in that: A driving box (9) is fixedly arranged at the upper end of the valve body (1), a valve stem (7) is arranged vertically upward inside the valve body (1), the valve stem (7) extends through the bottom wall of the driving box (9), a servo motor (13) is fixedly arranged at the upper end of the bottom wall of the driving box (9), an electronic controller module (19) is fixedly installed at the upper end of the servo motor (13), an output shaft of the servo motor (13) is downwardly facing and a gear (14) is fixed to the output shaft body, the output shaft of the servo motor (13) is fixedly connected to the valve stem (7), a power supply module (15) is arranged at the rear side of the servo motor (13), a fixed vertical plate (16) is fixedly arranged on the left side of the power supply module (15), a telescopic cylinder (17) is embedded inside the fixed vertical plate (16), a brake tooth plate (18) is fixedly arranged at the end of the telescopic cylinder (17), and one end of the brake tooth plate (18) with teeth is close to the gear (14) and can mesh with the gear (14).

2. A wafer-type butterfly valve according to claim 1, characterized in that: A wiring tube (20) is embedded in the rear end wall of the drive box (9), and the servo motor (13), the power supply module (15), the telescopic cylinder (17) and the electronic controller module (19) are all provided with connectors to facilitate the subsequent connection of the control circuit.

3. A wafer-type butterfly valve according to claim 1, characterized in that: An upper cover (11) is installed on the upper end of the driving box (9), and a docking block (10) is fixedly provided on the outer end of the upper cover (11) and the driving box (9), and a docking bolt (12) is vertically penetrated through the docking block (10).

4. The wafer-type butterfly valve according to claim 1, characterized in that: Both ends of the valve body (1) are fixedly connected to connecting pipes (4), the connecting ends of the connecting pipes (4) are penetrated by double-headed screws (2), and both ends of the double-headed screws (2) are threadedly connected to connecting nuts (3).

5. The wafer-type butterfly valve according to claim 1, characterized in that: A butterfly flap (6) is arranged in the valve body (1), and the butterfly flap (6) is fixedly connected to the valve stem (7).

6. The wafer-type butterfly valve according to claim 1, characterized in that: The inner end wall of the valve body (1) is fixedly provided with a valve core stop block (5) which is symmetrical with respect to the center of the valve body (1), and a symmetrical reinforcement plate (8) is formed on the upper part of the valve body (1).

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