Pneumatic wave-making butterfly valve

Abstract

The utility model discloses a pneumatic wave-making butterfly valve, which relates to the technical field of pneumatic butterfly valves and comprises a valve body and a pneumatic actuator, a valve plate is rotatably connected in the valve body, a first valve rod is fixedly mounted in the valve plate, a first bevel gear is fixedly sleeved at one end of the first valve rod, a shell is fixedly mounted at the top of the valve body, and a second bevel gear is fixedly sleeved at the other end of the first valve rod. The device has the beneficial effects that the position of the extension block can be adjusted by utilizing the movement of the rotating shaft, the second bevel gear on one side can be driven to move by utilizing the movement of the extension block, and the second bevel gear on the other side can be driven to move by utilizing the movement of the extension block; and a second bevel gear is in contact with a first bevel gear, when the situation that resetting cannot be achieved is encountered, the second bevel gear and the first bevel gear are in meshed connection to drive a first valve rod to rotate, therefore, a valve plate is driven to be obliquely closed, closing work can be conducted under the situation of power failure, and practicability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pneumatic butterfly valves, in particular to a pneumatic wave-making butterfly valve. Background Art

[0002] Pneumatic butterfly valve is composed of pneumatic actuator and butterfly valve. Pneumatic butterfly valve is a pneumatic valve that uses a circular butterfly plate that rotates with the valve stem to open and close to achieve the enabling action. It is mainly used as a shut-off valve, and can also be designed to have the function of regulation or shut-off valve and regulation. Butterfly valves are increasingly used in low-pressure large and medium-diameter pipelines. Pneumatic butterfly valve classification: stainless steel pneumatic butterfly valve, hard seal pneumatic butterfly valve, soft seal pneumatic butterfly valve, carbon steel pneumatic butterfly valve.

[0003] The existing pneumatic butterfly valve lacks a sealing structure. In case of air or power outage during use, the valve plate will remain in an open state and cannot be reset, causing the loss of the medium conveyed by the pneumatic butterfly valve. In addition, most pneumatic butterfly valves are integrated structures, which are extremely troublesome to disassemble when they need maintenance. For this reason, we have proposed a pneumatic wave-making butterfly valve. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a pneumatic wave-making butterfly valve, which solves the problems raised in the above-mentioned background technology.

[0005] To achieve the above objectives, the utility model is implemented through the following technical solutions: a pneumatic wave-making butterfly valve, comprising a valve body and a pneumatic actuator, the valve body is rotatably connected to a valve plate inside, a first valve stem is fixedly installed inside the valve plate, one end of the first valve stem is fixedly sleeved with a first bevel gear, a shell is fixedly installed on the top of the valve body, a third flange is fixedly installed on the top of the shell, a second flange is fixedly installed on the bottom of the pneumatic actuator, the second flange is connected to the third flange by bolts, an air inlet port is opened on the outside of the pneumatic actuator, a top plate is fixedly installed on the top of the pneumatic actuator, and a side plate is fixedly installed on one side of the top plate.

[0006] Preferably, a slide groove is provided at the bottom of the side plate, a first sliding block is slidably connected inside the slide groove, and a fixing plate is fixedly installed at the bottom of the first sliding block.

[0007] Preferably, an annular groove is provided inside the fixing plate, a second sliding block is slidably connected inside the annular groove, and a rotating shaft is fixedly installed on one side of the second sliding block.

[0008] Preferably, a telescopic spring is fixedly installed inside the slide groove, and one end of the telescopic spring is fixedly connected to the first sliding block.

[0009] Preferably, one end of the rotating shaft is fixedly connected to an extension block, a second bevel gear is fixedly sleeved on the outer side of the extension block, and the second bevel gear is meshingly connected to the first bevel gear.

[0010] Preferably, one end of the first valve stem is fixedly connected to the second valve stem, a sealing gasket is provided inside the valve body, and a plurality of first flanges are fixedly mounted on the outer side of the valve body.

[0011] The utility model provides a pneumatic wave-making butterfly valve, which has the following beneficial effects:

[0012] 1. The pneumatic wave-making butterfly valve drives the first slider to slide inside the slide groove by pushing the rotating shaft. The telescopic spring can be compressed by sliding the first slider. The position of the extension block can be adjusted by moving the rotating shaft. The second bevel gear on one side can be driven to move by moving the extension block, and the second bevel gear can be brought into contact with the first bevel gear. When the valve cannot be reset, the second bevel gear can be meshed with the first bevel gear to drive the first valve stem to rotate, thereby driving the valve plate to tilt and close. The valve can also be closed in the event of a power outage, thereby improving practicality.

[0013] 2. The pneumatic wave-making butterfly valve can complete the connection between the shell and the pneumatic actuator by connecting the third flange with the second flange. It is also convenient to disassemble in case of maintenance. The first flange can be used to connect with the outer pipe. The sealing performance of the valve plate can be increased by using a sealing gasket. The pneumatic actuator is driven to rotate by an external pneumatic device through the air inlet port, thereby completing the rotation of the valve plate and increasing the functionality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 It is a front view of the utility model;

[0016] Figure 3 For this utility model Figure 1 Enlarged view of point A in .

[0017] In the figure: 1. valve body; 2. first flange; 3. sealing gasket; 4. second valve stem; 5. first valve stem; 6. valve plate; 7. housing; 8. second flange; 9. air inlet port; 10. third flange; 11. pneumatic actuator; 12. first bevel gear; 13. top plate; 14. side plate; 15. telescopic spring; 16. first slider; 17. slide groove; 18. annular groove; 19. second slider; 20. rotating shaft; 21. extension block; 22. second bevel gear; 23. fixing plate. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0019] Embodiment 1:

[0020] See also Figures 1 to 3 The utility model provides a technical solution: a pneumatic wave-making butterfly valve, including a valve body 1, a pneumatic actuator 11, a valve plate 6 is rotatably connected inside the valve body 1, a first valve stem 5 is fixedly installed inside the valve plate 6, one end of the first valve stem 5 is fixedly sleeved with a first bevel gear 12, a shell 7 is fixedly installed on the top of the valve body 1, a third flange 10 is fixedly installed on the top of the shell 7, a second flange 8 is fixedly installed on the bottom of the pneumatic actuator 11, the second flange 8 is connected to the third flange 10 by bolts, an air inlet port 9 is opened on the outside of the pneumatic actuator 1 ... and one end of the first valve stem 5 is fixedly sleeved with a first bevel gear 12. A second valve stem 4 is connected, a sealing gasket 3 is arranged inside the valve body 1, and a plurality of first flanges 2 are fixedly installed on the outer side of the valve body 1. The connection between the housing 7 and the pneumatic actuator 11 can be completed by connecting the third flange 10 with the second flange 8, and it is convenient to disassemble in case of maintenance. The first flange 2 can be used to connect with the outer pipeline, and the sealing performance of the valve plate 6 can be increased by using the sealing gasket 3. The external pneumatic equipment connected through the air inlet port 9 drives the pneumatic actuator 11 to run and drive the first valve stem 5 to rotate, thereby completing the rotation of the valve plate 6 and increasing the functionality of the device.

[0021] Embodiment 2:

[0022] A top plate 13 is fixedly installed on the top of the pneumatic actuator 11, a side plate 14 is fixedly installed on one side of the top plate 13, a slide groove 17 is provided at the bottom of the side plate 14, a first slider 16 is slidably connected inside the slide groove 17, a fixed plate 23 is fixedly installed at the bottom of the first slider 16, an annular groove 18 is provided inside the fixed plate 23, a second slider 19 is slidably connected inside the annular groove 18, a rotating shaft 20 is fixedly installed on one side of the second slider 19, a telescopic spring 15 is fixedly installed inside the slide groove 17, one end of the telescopic spring 15 is fixedly connected to the first slider 16, one end of the rotating shaft 20 is fixedly connected to the extension block 21, a second bevel gear 22 is fixedly sleeved on the outer side of the extension block 21, and a second bevel gear 22 is fixedly sleeved on the outer side of the second slider 19. The bevel gear 22 is meshed and connected with the first bevel gear 12, and the first slider 16 is driven to slide inside the slide groove 17 by pushing the rotating shaft 20. The telescopic spring 15 can be compressed by sliding the first slider 16. The position of the extension block 21 can be adjusted by moving the rotating shaft 20. The movement of the extension block 21 can drive the second bevel gear 22 on one side to move, and the second bevel gear 22 can be brought into contact with the first bevel gear 12. When the second bevel gear 22 cannot be reset, the first valve stem 5 can be driven to rotate by meshing with the first bevel gear 12, thereby driving the valve plate 6 to tilt and close. The closing operation can also be performed in the event of a power outage, thereby improving practicality.

[0023] In summary, when the pneumatic wave-making butterfly valve is used, the third flange 10 is first connected to the second flange 8 to complete the connection work between the housing 7 and the pneumatic actuator 11. It is also convenient to disassemble in case of maintenance. The first flange 2 can be used to complete the connection with the outer pipe. The sealing gasket 3 can be used to increase the sealing of the valve plate 6. The pneumatic actuator 11 is driven to rotate by the external pneumatic equipment through the air inlet port 9, thereby completing the rotation of the valve plate 6. When the electricity is shut down, the rotating shaft 20 is pushed to drive the first slider 16 to slide inside the slide groove 17. The telescopic spring 15 can be compressed by sliding the first slider 16. The position of the extension block 21 can be adjusted by moving the rotating shaft 20. The second bevel gear 22 on one side can be driven to move by moving the extension block 21, and the second bevel gear 22 can be brought into contact with the first bevel gear 12. When the situation that the reset cannot be encountered, the second bevel gear 22 can be used to engage with the first bevel gear 12 to drive the first valve stem 5 to rotate, thereby driving the valve plate 6 to tilt and close, and the closing work can also be performed in the case of power failure.

[0024] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A pneumatic wave-making butterfly valve, comprising a valve body (1) and a pneumatic actuator (11), characterized in that: The valve body (1) is rotatably connected to a valve plate (6) inside, a first valve stem (5) is fixedly installed inside the valve plate (6), one end of the first valve stem (5) is fixedly sleeved with a first bevel gear (12), a housing (7) is fixedly installed on the top of the valve body (1), a third flange (10) is fixedly installed on the top of the housing (7), a second flange (8) is fixedly installed on the bottom of the pneumatic actuator (11), the second flange (8) is connected to the third flange (10) by bolts, an air inlet port (9) is opened on the outside of the pneumatic actuator (11), a top plate (13) is fixedly installed on the top of the pneumatic actuator (11), and a side plate (14) is fixedly installed on one side of the top plate (13).

2. A pneumatic wave-making butterfly valve according to claim 1, characterized in that: A sliding groove (17) is provided at the bottom of the side plate (14), a first sliding block (16) is slidably connected inside the sliding groove (17), and a fixing plate (23) is fixedly installed at the bottom of the first sliding block (16).

3. A pneumatic wave-making butterfly valve according to claim 2, characterized in that: An annular groove (18) is provided inside the fixing plate (23), a second sliding block (19) is slidably connected inside the annular groove (18), and a rotating shaft (20) is fixedly mounted on one side of the second sliding block (19).

4. A pneumatic wave-making butterfly valve according to claim 3, characterized in that: A telescopic spring (15) is fixedly installed inside the slide groove (17), and one end of the telescopic spring (15) is fixedly connected to the first sliding block (16).

5. A pneumatic wave-making butterfly valve according to claim 4, characterized in that: One end of the rotating shaft (20) is fixedly connected to an extension block (21), and a second bevel gear (22) is fixedly sleeved on the outer side of the extension block (21), and the second bevel gear (22) is meshingly connected to the first bevel gear (12).

6. The pneumatic wave-making butterfly valve according to claim 1 is characterized in that: One end of the first valve stem (5) is fixedly connected to the second valve stem (4), a sealing gasket (3) is arranged inside the valve body (1), and a plurality of first flanges (2) are fixedly mounted on the outside of the valve body (1).

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