A switch type pneumatic butterfly valve

Abstract

This utility model provides an on / off type pneumatic butterfly valve, including a fixed base, a ring seat welded to the fixed base, an opening in the ring seat, a threaded hole inside the opening, a threaded post rotatably mounted inside the threaded hole, a reinforcing seat movably mounted on the threaded post, a pneumatic actuator fixed between the reinforcing seats, a connecting pipe fixedly mounted on the side of the pneumatic actuator, a limit seat fixed to the bottom of the pneumatic actuator, and flanges movably mounted at both ends of the fixed base. In this utility model, the threaded post mounted on the ring seat provides a fixed support point for the pneumatic actuator. Later, the rotation of the threaded post drives the up and down movement of the pneumatic actuator, adjusting the overall height of the pneumatic actuator and the fixed base to meet the spatial requirements of different installation spaces.

Description

Technical Field

[0001] This utility model relates to the field of butterfly valve equipment, specifically a switch-type pneumatic butterfly valve. Background Technology

[0002] A pneumatic butterfly valve is a pneumatic valve that uses a circular disc that rotates with the valve stem to open and close, thus achieving the activation action. It is mainly used as a shut-off valve to control the medium in low-pressure pipelines. Existing pneumatic butterfly valves require the installation of a switch on top, which takes a lot of time to install and is prone to insecure installation, causing the switch to fall off due to external influences.

[0003] According to the patent document CN212251387U, a switch-type pneumatic butterfly valve device includes a pneumatic butterfly valve body and a flange. A connecting block is provided at the middle position of the upper end of the pneumatic butterfly valve body, and a fixed switch is provided at the middle position of the upper end of the connecting block. Sealing caps are provided at both ends of the pneumatic butterfly valve body, and a sliding column connecting T-tube device is provided at the middle position of the lower end of the pneumatic butterfly valve body. In use, the convex sliding cylinder is tightly fitted with the sealing sliding slot in the sliding groove connecting T-tube device, thereby preventing tilting during fixed connection work and facilitating the use of fixing bolts for fixed installation. However, although the above technical solution achieves fixed installation, it cannot expand the connection length during use and cannot meet the sealing installation at both ends of different pipes, resulting in inconvenience during use. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a switch-type pneumatic butterfly valve to solve the problems mentioned in the background. This utility model has a novel structure. In use, after the limiting plate moves to the fixed seat, the compression bolt is rotated. The compression bolt pushes the flange to move to both sides, and the flange moves to connect with the pipes at both ends of the outside, thereby expanding the applicability of the equipment.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a switch-type pneumatic butterfly valve, including a fixed base, a ring seat welded on the fixed base, an opening in the ring seat, a threaded hole inside the opening, a threaded column rotatably installed inside the threaded hole, a reinforcing base movably installed on the threaded column, a pneumatic actuator fixed between the reinforcing bases, a connecting pipe fixedly installed on the side of the pneumatic actuator, a limit seat fixed at the bottom of the pneumatic actuator, and flanges movably installed at both ends of the fixed base.

[0006] Furthermore, a fixed tube is welded onto the ring seat, and a movable tube is movably installed on the top of the fixed tube, with one end of the movable tube fixed to the bottom of the pneumatic actuator.

[0007] Furthermore, a rotating column is rotatably installed inside the fixed tube, and a sealing disc is welded to one end of the rotating column. The sealing disc is rotatably installed inside the fixed base.

[0008] Furthermore, a transmission groove is formed at the top of the rotating column, and a transmission frame is movably installed inside the transmission groove, with an output shaft welded onto the transmission frame.

[0009] Furthermore, a pneumatic motor is fixed to one end of the output shaft. The pneumatic motor is fixed inside the pneumatic actuator and is connected to the connecting pipe through a pipeline.

[0010] Furthermore, a clamping bolt is rotatably mounted on the limiting seat, and one end of the clamping bolt moves to contact one side of the flange.

[0011] Furthermore, the fixed base has an annular groove inside, a support tube is welded to one end of the flange, and a sealing tube is welded to one end of the support tube.

[0012] Furthermore, a sealing ring is fixed to the surface of the sealing tube, the sealing ring is in contact with the inner wall of the ring groove, a fixing ring is welded inside the ring groove, and the sealing tube is movably mounted on the fixing ring.

[0013] The beneficial effects of this utility model are:

[0014] 1. In use, the limiting plate moves to the fixed seat and then the compression bolt is rotated. The compression bolt pushes the flange to move to both sides, and the flange moves to connect with the pipes at both ends of the outside, thereby expanding the applicable range of the equipment.

[0015] 2. In this utility model, the threaded column is installed on the ring seat to provide a fixed support point for the pneumatic actuator. Later, the rotation of the threaded column drives the pneumatic actuator to move up and down, adjusting the overall height of the pneumatic actuator and the fixed seat to meet the space requirements under different installation spaces. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a switch-type pneumatic butterfly valve according to this utility model;

[0017] Figure 2 This is a schematic diagram of the rotating column of a switch-type pneumatic butterfly valve according to the present invention;

[0018] Figure 3 This is an enlarged structural diagram of point A of the on / off pneumatic butterfly valve of this utility model;

[0019] Figure 4 This is a schematic diagram of the support tube of a switch-type pneumatic butterfly valve according to the present invention;

[0020] Figure 5 This is a side sectional view of the fixed seat structure of a switch-type pneumatic butterfly valve according to the present invention.

[0021] In the diagram: 1. Fixed seat; 2. Ring seat; 3. Flange; 4. Sealing plate; 5. Fixed pipe; 6. Limit seat; 7. Pneumatic actuator; 8. Connecting pipe; 9. Opening; 10. Rotating column; 11. Transmission groove; 12. Transmission frame; 13. Output shaft; 14. Threaded column; 15. Extrusion bolt; 16. Reinforcing seat; 17. Movable pipe; 18. Support pipe; 19. Sealing pipe; 20. Sealing ring; 21. Ring groove; 22. Fixed ring. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0023] Please see Figures 1 to 5 This utility model provides a technical solution: a switch-type pneumatic butterfly valve, including a fixed base 1, an annular seat 2 welded on the fixed base 1, an opening 9 on the annular seat 2, a threaded hole inside the opening 9, a threaded column 14 rotatably installed inside the threaded hole, a reinforcing seat 16 movably installed on the threaded column 14, a pneumatic actuator 7 fixed between the reinforcing seats 16, a connecting pipe 8 fixedly installed on the side of the pneumatic actuator 7, a limit seat 6 fixedly installed at the bottom of the pneumatic actuator 7, flanges 3 movably installed at both ends of the fixed base 1, a fixed pipe 5 welded on the annular seat 2, a movable pipe 17 movably installed at the top of the fixed pipe 5, one end of the movable pipe 17 fixed to the bottom of the pneumatic actuator 7, the movable pipe 17 later slides on the fixed pipe 5, the movable pipe 17 slides to adjust the depth of the transmission frame 12 inside the transmission groove 11, thereby maintaining contact at the transmission point when the pneumatic actuator 7 moves up and down.

[0024] In this embodiment, a rotating column 10 is rotatably installed inside the fixed pipe 5. A sealing disc 4 is welded to one end of the rotating column 10. The sealing disc 4 is rotatably installed inside the fixed base 1. A transmission groove 11 is opened at the top of the rotating column 10. A transmission frame 12 is movably installed inside the transmission groove 11. An output shaft 13 is welded on the transmission frame 12. A pneumatic motor is fixed to one end of the output shaft 13. The pneumatic motor is fixed inside the pneumatic actuator 7. The pneumatic motor is connected to the connecting pipe 8 through a pipe. The pneumatic motor drives the transmission frame 12 on the output shaft 13 to rotate to complete the power transmission, so that the sealing disc 4 can achieve on / off operation.

[0025] In this embodiment, a compression bolt 15 is rotatably installed on the limiting seat 6. One end of the compression bolt 15 is movable and contacts one side of the flange 3. An annular groove 21 is opened inside the fixing seat 1. A support tube 18 is welded to one end of the flange 3. A sealing tube 19 is welded to one end of the support tube 18. A sealing ring 20 is fixed on the surface of the sealing tube 19. The sealing ring 20 is movable and contacts the inner wall of the annular groove 21. A fixing ring 22 is welded inside the annular groove 21. The sealing tube 19 is movably installed on the fixing ring 22. The fixing ring 22 and the sealing tube 19 cooperate to complete the initial sealing. The sealing ring 20 contacts the inner wall of the annular groove 21 to complete the secondary sealing.

[0026] Working principle: In use, the fixed seat 1 is placed in the installation position. When it is necessary to adjust the position between the flange 3 and the pipes at both ends, the clamping bolt 15 is rotated to push the flange 3 to move to both ends. When the flange 3 moves, the sealing pipe 19 is movably installed on the fixed ring 22. The fixed ring 22 and the sealing pipe 19 cooperate to complete the initial seal. The sealing ring 20 contacts the inner wall of the ring groove 21 to complete the secondary seal. After the flange 3 moves, it contacts the connection point of the pipe. After the flange 3 contacts the pipe, the connection is fixed by the fixing bolt. The clamping bolt 15 clamps the flange 3 from the inside to the outside and keeps it in contact for limiting support. When the flange 3 is fixed, it is necessary to adjust the height of the pneumatic actuator 7. The threaded column 14 is rotated. The threaded column 14 drives the pneumatic actuator 7 to move up and down through the reinforcing seat 16. When the pneumatic actuator 7 moves up and down, the clamping bolt 15 loses its clamping and fixing of the flange 3. After the limiting seat 6 moves, the clamping bolt 15 is rotated again to contact the flange 3. After the clamping bolt 15 contacts the flange 3, it provides secondary support for the pneumatic actuator 7.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0028] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A switch-type pneumatic butterfly valve, comprising a fixed base (1), characterized in that: A ring seat (2) is welded on the fixed seat (1). An opening (9) is opened on the ring seat (2). A threaded hole is opened inside the opening (9). A threaded column (14) is rotatably installed inside the threaded hole. A reinforcing seat (16) is movably installed on the threaded column (14). A pneumatic actuator (7) is fixed between the reinforcing seats (16). A connecting pipe (8) is fixedly installed on the side of the pneumatic actuator (7). A limit seat (6) is fixed at the bottom of the pneumatic actuator (7). Flanges (3) are movably installed at both ends of the fixed seat (1).

2. The on / off pneumatic butterfly valve according to claim 1, characterized in that: A fixed tube (5) is welded onto the ring seat (2), and a movable tube (17) is movably installed on the top of the fixed tube (5). One end of the movable tube (17) is fixed to the bottom of the pneumatic actuator (7).

3. The on / off pneumatic butterfly valve according to claim 2, characterized in that: A rotating column (10) is rotatably installed inside the fixed tube (5), and a sealing disc (4) is welded to one end of the rotating column (10). The sealing disc (4) is rotatably installed inside the fixed seat (1).

4. The on / off pneumatic butterfly valve according to claim 3, characterized in that: The top of the rotating column (10) has a transmission groove (11), and a transmission frame (12) is movably installed inside the transmission groove (11). An output shaft (13) is welded onto the transmission frame (12).

5. The on / off pneumatic butterfly valve according to claim 4, characterized in that: A pneumatic motor is fixed at one end of the output shaft (13). The pneumatic motor is fixed inside the pneumatic actuator (7). The pneumatic motor is connected to the connecting pipe (8) through a pipe.

6. The on / off pneumatic butterfly valve according to claim 1, characterized in that: A compression bolt (15) is rotatably mounted on the limiting seat (6), and one end of the compression bolt (15) moves to contact one side of the flange (3).

7. The on / off pneumatic butterfly valve according to claim 1, characterized in that: The fixed seat (1) has an annular groove (21) inside, and a support pipe (18) is welded to one end of the flange (3), and a sealing pipe (19) is welded to one end of the support pipe (18).

8. A switch-type pneumatic butterfly valve according to claim 7, characterized in that: A sealing ring (20) is fixed on the surface of the sealing tube (19). The sealing ring (20) is in contact with the inner wall of the ring groove (21). A fixing ring (22) is welded inside the ring groove (21). The sealing tube (19) is movably mounted on the fixing ring (22).

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