Quick-closing butterfly valve

Abstract

The utility model discloses a quick-closing butterfly valve, which relates to the technical field of butterfly valves, and comprises a butterfly valve body, a connecting shell is mounted on the butterfly valve body, a cover plate is mounted on the connecting shell through a first hexagonal head bolt, a connecting block is mounted on the cover plate, and the cover plate is connected with a bearing cover through a screw. According to the quick-closing butterfly valve, an oil cylinder is changed into a high-pressure cylinder from a low-pressure cylinder, so that the size of the quick-closing butterfly valve can be reduced, the quick-closing butterfly valve is convenient to install, two travel switches are added, and the quick-closing butterfly valve is convenient to use and high in practicability. When the butterfly valve body is closed or opened, the corresponding travel switch is triggered, in-place opening and in-place closing signals can be sent to a central controller for measurement and control, and the quick closing time is shortened.

Description

Technical Field

[0001] The utility model relates to the technical field of butterfly valves, in particular to a quick-closing butterfly valve. Background Technique

[0002] The butterfly valve, also called a flap valve, is a simple-structured regulating valve. The butterfly valve that can be used for the on-off control of the medium in a low-pressure pipeline refers to a valve in which the closing member (valve flap or butterfly plate) is a disc and rotates around the valve shaft to achieve opening and closing. Most of the butterfly valves produced at home and abroad at present are controlled by a low-pressure cylinder, and the opening degree of the valve cannot be monitored online. When used as a quick-closing valve, the closing speed is relatively slow. After jamming, it cannot be monitored in time, which is easy to cause potential hazards. Content of the Utility Model

[0003] Aiming at the deficiencies of the prior art, the utility model provides a quick-closing butterfly valve, which solves the problems put forward in the above background technique.

[0004] To achieve the above purposes, the utility model is realized through the following technical solutions: A quick-closing butterfly valve includes a butterfly valve body. A connecting housing is installed on the butterfly valve body. The connecting housing is installed with a cover plate through a first hexagon head bolt. A connecting block is installed on the cover plate. The cover plate is connected with a bearing cover through a screw. A deep groove ball bearing is installed in the bearing cover. A sleeve is installed in the deep groove ball bearing. The sleeve is connected to the shaft end of the butterfly valve body. The connecting block is installed with a pin shaft through a thin hexagon nut. A connecting rod is arranged outside the pin shaft. A spherical plain bearing is installed in the connecting rod. A steel pipe is installed above the spherical plain bearing in the connecting rod. The spherical plain bearing is connected with the pin shaft. The top end of the sleeve extends above the cover plate and is installed with two rods. A pressing plate is installed on the surface of the connecting housing through a second hexagon head bolt. An organic glass plate is installed on the surface of the pressing plate. Two travel switches are installed on the surface of the connecting housing through first internal hexagon socket head cap screws.

[0005] Preferably, a high-pressure oil cylinder is installed on one side of the connecting housing through a connecting screw.

[0006] Preferably, the connecting rod, spherical plain bearing, steel pipe, pin shaft, thin hexagon nut and sleeve form a connecting rod mechanism.

[0007] Preferably, a circular scale plate is installed on the surface of the connecting housing through a second internal hexagon socket head cap screw, and a pointer matched with the scale plate is installed on the outside of the sleeve.

[0008] Preferably, the piston of the high-pressure oil cylinder is connected with the connecting rod. An oil inlet is arranged on the surface of the high-pressure oil cylinder. An oil return port is arranged on the surface of the high-pressure oil cylinder on one side of the oil inlet.

[0009] The utility model provides a quick-closing butterfly valve, which has the following beneficial effects:

[0010] The quick - closing butterfly valve has changed the oil cylinder from a low - pressure cylinder to a high - pressure cylinder, so that its volume can be reduced, which is convenient for installation. Two travel switches are added. When closing or opening the butterfly valve body, the corresponding travel switches are triggered, and signals of open - in - place and close - in - place can be sent to the central control for measurement and control, improving the quick - closing time. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0012] Figure 2 For the present utility model Figure 1 Schematic diagram of the C - direction structure;

[0013] Figure 3 For the present utility model Figure 1 Schematic diagram of the B - direction structure;

[0014] Figure 4 For the present utility model Figure 2 Schematic diagram of the D - direction structure;

[0015] Figure 5 For the present utility model Figure 1 Schematic diagram of the B - direction structure without the cover plate.

[0016] In the figure: 1. Connecting housing; 2. Cover plate; 3. First hexagon head bolt; 4. Connecting block; 6. Bearing cover; 8. Deep groove ball bearing; 9. Sleeve; 10. Pin shaft; 11. Thin hexagon nut; 13. Steel pipe; 14. Spherical plain bearing; 15. Connecting rod; 16. Travel switch; 17. First internal hexagon socket head cap screw; 18. Rod; 19. Circular scale plate; 20. Second internal hexagon socket head cap screw; 21. Pointer; 22. Plexiglass plate; 23. Pressure plate; 24. Second hexagon head bolt; 25. High - pressure oil cylinder; 26. Butterfly valve body; 27. Oil inlet; 28. Oil return port. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0018] Please refer to Figures 1 to 5, the utility model provides a technical solution: a quick - closing butterfly valve, which includes a butterfly valve body 26. A connection housing 1 is installed on the butterfly valve body 26. The connection housing 1 is installed with a cover plate 2 through a first hexagon head bolt 3. A connection block 4 is installed on the cover plate 2. The cover plate 2 is connected with a bearing cover 6 by screws. A deep - groove ball bearing 8 is installed in the bearing cover 6. A sleeve 9 is installed in the deep - groove ball bearing 8. The sleeve 9 is connected with the shaft end of the butterfly valve body 26. The connection block 4 is installed with a pin shaft 10 through a hexagon thin nut 11. A connecting rod 15 is arranged outside the pin shaft 10. A spherical plain bearing 14 is installed in the connecting rod 15. A steel pipe 13 is installed above the spherical plain bearing 14 in the connecting rod 15. The spherical plain bearing 14 is connected with the pin shaft 10. The top end of the sleeve 9 extends above the cover plate 2 and is installed with two rods 18. A pressure plate 23 is installed on the surface of the connection housing 1 through a second hexagon head bolt 24. An organic glass plate 22 is installed on the surface of the pressure plate 23. Two travel switches 16 are installed on the surface of the connection housing 1 through first hexagon socket head cap screws 17. The two travel switches 16 are respectively a valve fully - closed switch and a valve fully - opened switch. When the sleeve 9 rotates to drive the rod 18 to rotate, when the rod 18 triggers the travel switch 16 representing the fully - closed switch, a closed - in - place signal is sent to the central control. The central control controls the butterfly valve body 26 to close, and the high - pressure oil cylinder 25 stops working. When the rod 18 triggers the travel switch 16 representing the valve fully - opened switch, an opened - in - place signal is sent to the central control. The central control controls the butterfly valve body 26 to open, and the high - pressure oil cylinder 25 stops working. The action condition of the connection mechanism can be observed through the organic glass plate 22.

[0019] One side of the connection housing 1 is installed with a high - pressure oil cylinder 25 through a connection screw. A solenoid valve is installed on the high - pressure oil cylinder 25. The connecting rod 15, the spherical plain bearing 14, the steel pipe 13, the pin shaft 10, the hexagon thin nut 11 and the sleeve 9 form a connecting rod mechanism to drive the butterfly valve body 26 to close or open. A circular scale plate 19 is installed on the surface of the connection housing 1 through a second hexagon socket head cap screw 20. A matching pointer 21 is installed on the outside of the sleeve 9. When the sleeve 9 rotates to drive the rod 18 to rotate, the sleeve 9 drives the pointer 21 to move along the inner side of the circular scale plate 19. By observing the scale on the circular scale plate 19 pointed by the pointer 21, it is possible to determine whether the butterfly valve body 26 has moved in place. The piston of the high - pressure oil cylinder 25 is connected with the connecting rod 15. An oil inlet 27 is arranged on the surface of the high - pressure oil cylinder 25. An oil return port 28 is arranged on the surface of the high - pressure oil cylinder 25 and on one side of the oil inlet 27. So that the oil fluid enters the interior of the high - pressure oil cylinder 25 through the oil inlet 27, and the oil fluid inside the high - pressure oil cylinder 25 returns oil through the oil return port 28.

[0020] In summary, when the quick-closing butterfly valve is in use, the high-pressure oil cylinder 25 is filled with oil at 10-14 MPA through the oil inlet 27, and the oil cylinder piston is driven to move through the solenoid valve. When the lower chamber of the high-pressure oil cylinder 25 is filled with oil and the piston extends, the connecting rod mechanism is driven to move to the left. At this time, the connecting rod 15, the spherical plain bearing 14, the steel pipe 13, the pin shaft 10 and the sleeve 9 move, so that the sleeve 9 drives the shaft end of the butterfly valve body 26 to rotate, and the butterfly valve body 26 also slowly opens accordingly. During the process of driving the rod 18 to rotate by the rotation of the sleeve 9, when the rod 18 triggers the travel switch 16 representing the fully open switch of the valve, an open-in-place signal is sent to the central control. The central control controls the opening of the butterfly valve body 26, and the high-pressure oil cylinder 25 stops working. The action of the connecting mechanism can be observed through the plexiglass plate 22. When the upper chamber of the oil inlet 27 is filled with oil, the piston retracts, driving the connecting rod mechanism to move to the right. At this time, the connecting rod 15, the spherical plain bearing 14, the steel pipe 13, the pin shaft 10 and the sleeve 9 move in a reset manner, so that the sleeve 9 drives the shaft end of the butterfly valve body 26 to move in a reset manner, and the butterfly valve body 26 also slowly closes accordingly. During the process of driving the rod 18 to rotate by the rotation of the sleeve 9, when the rod 18 triggers the travel switch 16 representing the fully closed switch, a close-in-place signal is sent to the central control. The central control controls the closing of the butterfly valve body 26, and the high-pressure oil cylinder 25 stops working. At the same time, when the OPC oil is closed, the quick-closing valve closes quickly, and the closing time is less than 0.5S.

[0021] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A quick-closing butterfly valve, comprising a butterfly valve body (26), characterized in that: The butterfly valve body (26) is provided with a connecting shell (1), the connecting shell (1) is provided with a cover plate (2) via a first hexagonal bolt (3), the cover plate (2) is provided with a connecting block (4), the cover plate (2) is connected with a bearing cover (6) via screws, a deep groove ball bearing (8) is provided in the bearing cover (6), a sleeve (9) is provided in the deep groove ball bearing (8), the sleeve (9) is connected to the shaft end of the butterfly valve body (26), a pin shaft (10) is provided on the connecting block (4) via a hexagonal thin nut (11), a connecting rod (15) is provided on the outer side of the pin shaft (10), A spherical bearing (14) is installed in the connecting rod (15), a steel pipe (13) is installed on the connecting rod (15) and located above the spherical bearing (14), the spherical bearing (14) is connected to the pin (10), the top end of the sleeve (9) extends to the top of the cover plate (2) and is installed with two rods (18), the surface of the connecting shell (1) is installed with a pressure plate (23) through a second hexagonal head bolt (24), the surface of the pressure plate (23) is installed with a plexiglass plate (22), and the surface of the connecting shell (1) is installed with two travel switches (16) through a first hexagon socket head screw (17).

2. A quick-closing butterfly valve according to claim 1, characterized in that: A high-pressure oil cylinder (25) is mounted on one side of the connection housing (1) via connection screws.

3. A quick-closing butterfly valve according to claim 1, characterized in that: The connecting rod (15), the joint bearing (14), the steel pipe (13), the pin (10), the hexagonal thin nut (11) and the sleeve (9) form a connecting rod mechanism.

4. The fast closing butterfly valve according to claim 1, characterized in that: A circular scale plate (19) is installed on the surface of the connecting housing (1) via a second hexagon socket head screw (20), and a matching pointer (21) is installed on the outer side of the sleeve (9).

5. The quick-closing butterfly valve according to claim 2, characterized in that: The piston of the high-pressure oil cylinder (25) is connected to the connecting rod (15), an oil inlet (27) is provided on the surface of the high-pressure oil cylinder (25), and an oil return port (28) is provided on the surface of the high-pressure oil cylinder (25) and located on one side of the oil inlet (27).

Images