Leak-proof electric butterfly valve

Abstract

This utility model discloses a leak-proof electric butterfly valve, which includes: an electric butterfly valve body, the electric butterfly valve body including a drive shaft and a valve plate, and the outer surface of the drive shaft is fixedly connected to the valve plate. A bevel gear one is fixedly connected to the lower end of the drive shaft, and a bevel gear two is meshed with the outer surface of the bevel gear one. A rotating rod is fixedly connected to the inner wall of the bevel gear two, and a protective cover is rotatably connected to the outer surface of the rotating rod. A fixed cylinder is fixedly connected to the outer surface of the protective cover. By rotating the rotating rod, manual emergency operation can be performed, and the valve plate can be rotated to achieve on / off switching. At the same time, the transmission structure related to manual emergency operation is protected inside the protective cover, extending the service life of the transmission mechanism. The cover of the protective cover can be pulled down directly to expose the internal structure of the protective cover, which is convenient for inspection of the internal structure of the protective cover. After the cover is released, the spring automatically resets and pushes the cover to reseal.

Description

Technical Field

[0001] This utility model relates to the field of electric butterfly valve technology, and in particular to a leak-proof electric butterfly valve. Background Technology

[0002] In fluid transport systems, electric butterfly valves are the core equipment for controlling the on / off state and flow rate of the medium. They are widely used due to their high degree of automation and convenient operation. Currently, electric butterfly valves on the market mainly rely on electric drive units to drive the valve plate to rotate and achieve medium control. When the electric drive unit fails or loses power, there is no manual emergency operation mechanism, and the valve plate cannot be driven by manual emergency operation, which forces the medium transport system to shut down, affecting production or people's livelihood needs. Utility Model Content

[0003] The purpose of this utility model is to at least solve one of the technical problems existing in the prior art, and to provide a leak-proof electric butterfly valve that solves the problem that the valve plate cannot be driven by manual emergency operation.

[0004] This utility model also provides a leak-proof electric butterfly valve, comprising: an electric butterfly valve body, the electric butterfly valve body including a drive shaft and a valve plate, wherein the outer surface of the drive shaft is fixedly connected to the valve plate, a bevel gear one is fixedly connected to the lower end of the drive shaft, a bevel gear two is meshed with the outer surface of the bevel gear one, a rotating rod is fixedly connected to the inner wall of the bevel gear two, a protective cover is rotatably connected to the outer surface of the rotating rod, a fixed cylinder is fixedly connected to the outer surface of the protective cover, a limit plate is slidably connected to the inner wall of the fixed cylinder, a connecting rod is fixedly connected to the lower surface of the limit plate, a cover is fixedly connected to the outer surface of the connecting rod, and a spring is sleeved on the outer surface of the connecting rod.

[0005] Preferably, the upper end of the spring is fixedly connected to the limiting plate, and the lower end of the spring is fixedly connected to the fixing cylinder.

[0006] Preferably, the outer surface of the electric butterfly valve body is fixedly connected to the protective cover, and the lower surface of the protective cover is in contact with the cover.

[0007] Preferably, the spring is located inside the fixed cylinder, and the first bevel gear and the second bevel gear are located inside the protective cover.

[0008] Preferably, an identification box is fixedly connected to the outer surface of the protective cover, and an identification plate is placed inside the identification box.

[0009] Preferably, there are four of the fixed cylinder, limiting plate, connecting rod and spring, which are evenly distributed around the protective cover, and the outer surface of the connecting rod is slidably connected to the fixed cylinder.

[0010] Preferably, one end of the rotating rod is fixedly connected to a handwheel, and the handwheel is located outside the protective cover. Beneficial effects

[0011] The leak-proof electric butterfly valve of this technical solution can be manually operated in an emergency by rotating the rotating rod. The valve plate is rotated to open and close the valve. At the same time, the transmission structure related to the manual emergency operation is protected in a protective cover, which extends the service life of the transmission mechanism. The cover can be pulled down directly to expose the internal structure of the cover, which is convenient for inspection. After the cover is released, the spring automatically resets and pushes the cover to reseal. Attached Figure Description

[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments; Figure 1 This is an overall structural diagram of the leak-proof electric butterfly valve of this utility model; Figure 2 This is a schematic diagram of the rotating rod connection of the leak-proof electric butterfly valve of this utility model; Figure 3 This is a schematic diagram of the spring connection of the leak-proof electric butterfly valve of this utility model.

[0013] Legend: 1. Electric butterfly valve body; 101. Drive shaft; 102. Valve plate; 2. Bevel gear one; 3. Bevel gear two; 4. Rotating rod; 5. Protective cover; 6. Fixed cylinder; 7. Limiting plate; 8. Connecting rod; 9. Spring; 10. Cover; 11. Handwheel; 12. Identification box. Detailed Implementation

[0014] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0015] Reference Figure 1-3This utility model discloses a leak-proof electric butterfly valve, comprising: an electric butterfly valve body 1, which reliably shuts off and regulates the medium in a pipeline system, with particular emphasis on sealing performance in the closed state to prevent medium leakage to the outside of the valve or the environment. It mainly consists of a valve body, a butterfly plate, a valve stem, and drive connectors, etc., and simultaneously provides leak prevention by sealing between the butterfly plate and the valve seat, between the valve body and the valve cover, and by placing packing at the valve stem. An electric actuator, through motor rotation, drives the valve stem and butterfly plate to rotate. The rotation angle of the butterfly plate determines the cross-sectional area of ​​the channel. As is common in existing structures, the electric butterfly valve body 1 includes a drive shaft. 101 and valve plate 102, the drive shaft 101 is the output end of the motor of the electric butterfly valve body 1, used to transmit power to drive the valve plate 102 to rotate. The valve plate 102 is used to directly control the flow of the medium in the flow channel. It rotates with the drive shaft 101, and the outer surface of the drive shaft 101 is fixedly connected to the valve plate 102. The lower end of the drive shaft 101 is fixedly connected to a bevel gear 2, which meshes with a bevel gear 3, converting the horizontal rotational power transmitted from the rotating rod 4 into vertical power and transmitting it to the drive shaft 101. The outer surface of the bevel gear 2 is meshed with the bevel gear 3, which rotates with the rotating rod 4 and meshes with the bevel gear 2. The power is transmitted to bevel gear 1, 2, which drives the transmission shaft 101 to rotate. A rotating rod 4 is fixedly connected to the inner wall of bevel gear 2, 3, and rotates synchronously under the drive of handwheel 11, precisely transmitting power to bevel gear 2, 3. A protective cover 5 is rotatably connected to the outer surface of the rotating rod 4, isolating bevel gear 1, 2, and 3 from dust, moisture, etc., preventing wear and corrosion of components. A fixed cylinder 6 is fixedly connected to the outer surface of the protective cover 5, the internal space of which houses spring 9 and limiting plate 7. The limiting plate 7 guides the sliding along the cylinder wall, ensuring the stability of the spring 9's extension and retraction direction and preventing component displacement. The limiting plate 7 is slidably connected to the inner wall of the fixed cylinder 6, allowing the spring to... The upper end of the spring 9 is fixed on it. When the spring 9 extends or retracts, it pushes or pulls the limiting piece 7 to slide, thereby driving the connecting rod 8 to move up and down, controlling the cover 10. The lower surface of the limiting piece 7 is fixedly connected to the connecting rod 8, which moves synchronously with the sliding of the limiting piece 7, causing the cover 10 to fit or separate from the protective cover 5. The outer surface of the connecting rod 8 is fixedly connected to the cover 10, which fits against the protective cover 5 under the elastic force of the spring 9, isolating dust and moisture. The outer surface of the connecting rod 8 is fitted with the spring 9. In its natural state, it pushes the limiting piece 7 to make the cover 10 fit against the protective cover 5; when the cover 10 is pulled, the spring 9 is compressed, and after releasing, the elastic force pushes the cover 10 back to its original position.

[0016] The upper end of the spring 9 is fixedly connected to the limiting plate 7, and the lower end of the spring 9 is fixedly connected to the fixing cylinder 6. The limiting plate 7 and the fixing cylinder 6 are fixed at both ends of the spring 9 respectively. It can continuously push the limiting plate 7 through its own elastic force, thereby driving the connecting rod 8 to make the cover 10 tightly adhere to the protective cover 5, forming a stable seal.

[0017] The outer surface of the electric butterfly valve body 1 is fixedly connected to the protective cover 5, and the lower surface of the protective cover 5 is in contact with the cover 10. The electric butterfly valve body 1 and the protective cover 5 are fixed so that the protective cover 5 can securely cover the internal transmission components. The protective cover 5 and the cover 10 are in contact, and a sealing ring is provided between the two to further isolate external impurities.

[0018] The spring 9 is located inside the fixed cylinder 6, while the bevel gear 1 2 and bevel gear 2 3 are located inside the protective cover 5. The spring 9 is hidden inside the fixed cylinder 6 to prevent damage from external forces or impurities from affecting its elasticity. The bevel gear 1 2 and bevel gear 2 3 are placed inside the protective cover 5 to isolate dust, moisture, etc., to prevent gear meshing failure, ensure stable power transmission, and reduce the risk of leakage.

[0019] A label box 12 is fixedly connected to the outer surface of the protective cover 5. The label box 12 contains a label. The label box 12 outside the protective cover 5 can be used to fix the label, which makes it convenient for operators to quickly check valve parameters (such as model and medium), avoid misoperation, and facilitate equipment management and maintenance records.

[0020] There are four components: a fixed cylinder 6, a limiting piece 7, a connecting rod 8, and a spring 9, which are evenly distributed around the protective cover 5. The outer surface of the connecting rod 8 is slidably connected to the fixed cylinder 6. The four components are evenly distributed, so that the cover 10 is subjected to balanced force and the seal is tighter. The connecting rod 8 and the fixed cylinder 6 slide together to ensure that the cover 10 opens and closes smoothly.

[0021] One end of the rotating rod 4 is fixedly connected to a handwheel 11. The handwheel 11 is located outside the protective cover 5. The rotating rod 4 is connected to the handwheel 11 and the handwheel 11 is outside the protective cover 5. In case of power failure or motor failure, the operator can directly rotate the handwheel 11 to drive the valve plate 102 through the transmission component to realize emergency operation.

[0022] Working principle: During use, the core power of the electric butterfly valve body 1 comes from an external electric unit (such as a motor, and a motor that will not lock the drive shaft 101 after power failure or malfunction). Its output rotational power is transmitted to the drive shaft 101, causing the valve plate 102 to rotate synchronously with the drive shaft 101, thus controlling the flow of fluid. When the electric unit malfunctions or is powered off, the operator rotates the handwheel 11 located outside the protective cover 5. The handwheel 11 drives the rotating rod 4 fixed to it to rotate. The rotating rod 4 transmits power to the bevel gear 3 fixed to its inner wall. The bevel gear 3 meshes with the bevel gear 2 fixed to the lower end of the drive shaft 101, ultimately driving the drive shaft 101 to rotate. The valve plate 102 rotates to complete the emergency opening and closing of the valve, preventing the system from shutting down due to electric failure. The transmission structure related to manual emergency operation is protected inside the protective cover 5. The cover 10 at the bottom of the protective cover 5 is elastically sealed by the spring 9. In the natural state, the spring 9 pushes the limit plate 7 to move upward along the inner wall of the fixed cylinder 6, causing the connecting rod 8 to be tightly pressed against the lower surface of the protective cover 5 with the cover 10, preventing impurities from entering. When maintenance is required, the cover 10 is pulled down to compress the spring 9, separating the cover 10 from the protective cover 5 and exposing the internal structure for easy observation. The spring 9 returns to its original position and pushes the cover 10 to reseal. If a fault occurs, the entire protective cover 5 can be removed for repair or replacement.

[0023] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A leak-proof electric butterfly valve, characterized in that, include: The electric butterfly valve body (1) includes a drive shaft (101) and a valve plate (102). The outer surface of the drive shaft (101) is fixedly connected to the valve plate (102). The lower end of the drive shaft (101) is fixedly connected to a bevel gear (2). The outer surface of the bevel gear (2) is meshed with a bevel gear (3). The inner wall of the bevel gear (3) is fixedly connected to a rotating rod (4). The outer surface of the rotating rod (4) is rotatably connected to a protective cover (5). The outer surface of the protective cover (5) is fixedly connected to a fixed cylinder (6). The inner wall of the fixed cylinder (6) is slidably connected to a limit piece (7). The lower surface of the limit piece (7) is fixedly connected to a connecting rod (8). The outer surface of the connecting rod (8) is fixedly connected to a cover (10). The outer surface of the connecting rod (8) is fitted with a spring (9).

2. The leak-proof electric butterfly valve according to claim 1, characterized in that, The upper end of the spring (9) is fixedly connected to the limiting piece (7), and the lower end of the spring (9) is fixedly connected to the fixing cylinder (6).

3. The leak-proof electric butterfly valve according to claim 1, characterized in that, The outer surface of the electric butterfly valve body (1) is fixedly connected to the protective cover (5), and the lower surface of the protective cover (5) is in contact with the cover (10).

4. The leak-proof electric butterfly valve according to claim 1, characterized in that, The spring (9) is located inside the fixed cylinder (6), and the bevel gear one (2) and bevel gear two (3) are located inside the protective cover (5).

5. The leak-proof electric butterfly valve according to claim 1, characterized in that, The outer surface of the protective cover (5) is fixedly connected to an identification box (12), and an identification sign is placed inside the identification box (12).

6. The leak-proof electric butterfly valve according to claim 1, characterized in that, The fixed cylinder (6), the limiting plate (7), the connecting rod (8) and the spring (9) are provided in four parts and are evenly distributed around the protective cover (5). The outer surface of the connecting rod (8) is slidably connected to the fixed cylinder (6).

7. The leak-proof electric butterfly valve according to claim 1, characterized in that, One end of the rotating rod (4) is fixedly connected to a handwheel (11), and the handwheel (11) is located outside the protective cover (5).

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