Leakage-proof electric butterfly valve

Abstract

The utility model discloses an anti-leakage type electric butterfly valve which comprises a valve body, an electric driving device is arranged at the top of the valve body, a valve rod is rotatably connected to the interior of the valve body, a butterfly plate is fixedly connected to the outer wall of the valve rod, an installation groove is formed in the outer wall of the butterfly plate, a first sealing ring is movably connected to the interior of the installation groove, and a second sealing ring is movably connected to the interior of the first sealing ring. A mounting plate is fixedly connected to the inner wall of the valve body, a movable sleeve is fixedly connected to the inner side of the mounting plate, a movable spring is fixedly connected to the interior of the movable sleeve, a movable rod is fixedly connected to one end of the movable spring, and a second sealing ring is fixedly connected to the other end of the movable rod. The first sealing ring is connected with the mounting groove formed in the outer wall of the butterfly plate through the fixing bolt, the mounting stability of the first sealing ring is improved, meanwhile, the movable rod drives the second sealing ring to be tightly attached to the joint of the valve body and the butterfly plate under the action of the movable spring, and the sealing performance of the joint of the valve body and the butterfly plate is improved.

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] An electric butterfly valve is a type of valve that uses a circular butterfly plate as the opening and closing element, which rotates with the valve stem to open, close, and regulate the fluid passage. It mainly consists of a valve body, butterfly plate, valve stem, sealing ring, electric drive device, etc. The number of parts is relatively small, and the overall structure is compact.

[0003] The sealing performance between the butterfly plate and the inner wall of the valve body in existing electric butterfly valves is poor, which can easily lead to liquid leakage after long-term use, thus affecting the use of the valve. Therefore, it is necessary to design a leak-proof electric butterfly valve to solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to provide a leak-proof electric butterfly valve, which solves the problem that the sealing performance between the butterfly plate and the inner wall of the valve body of the existing electric butterfly valve is poor, and liquid leakage is likely to occur after long-term use, thus affecting the use of the valve.

[0005] To achieve the above objectives, a leak-proof electric butterfly valve is provided, comprising: a valve body, an electric drive device disposed on the top of the valve body, a valve stem rotatably connected inside the valve body, a butterfly plate fixedly connected to the outer wall of the valve stem, an installation groove provided on the outer wall of the butterfly plate, and a sealing ring movably connected inside the installation groove, thereby improving the installation stability of the sealing ring 1, preventing it from loosening during use, and improving the sealing performance of the electric butterfly valve;

[0006] An installation plate is fixedly connected to the inner wall of the valve body. A movable sleeve is fixedly connected to the inner side of the installation plate. A movable spring is fixedly connected inside the movable sleeve. A movable rod is fixedly connected to one end of the movable spring. A sealing ring is fixedly connected to the other end of the movable rod. This improves the sealing performance at the connection between the inner wall of the valve body and the butterfly plate, preventing valve body leakage.

[0007] According to the aforementioned leak-proof electric butterfly valve, flanges are fixedly connected to both sides of the valve body, and flange holes are provided inside the flanges to facilitate the installation of the electric butterfly valve.

[0008] According to the aforementioned leak-proof electric butterfly valve, the shape and size of the butterfly plate are matched with the shape and size of the inner wall of the valve body, and the butterfly plate is rotatably connected to the inner wall of the valve body, which facilitates the control of the opening and closing of the electric butterfly valve.

[0009] According to the aforementioned leak-proof electric butterfly valve, the shape and size of the sealing ring one match the shape and size of the mounting groove, and fixing holes are provided on the outer wall of the sealing ring one and the inner wall of the mounting groove. The shape, size and position of the fixing holes correspond to each other, which improves the installation and stability of the sealing ring one and prevents the sealing ring one from loosening after long-term use.

[0010] According to the aforementioned leak-proof electric butterfly valve, both the first sealing ring and the second sealing ring are made of rubber material, which improves the sealing performance of the electric butterfly valve.

[0011] According to the aforementioned leak-proof electric butterfly valve, the shape and size of the movable rod are matched with the shape and size of the movable sleeve. The movable rod is slidably connected to the inner wall of the movable sleeve under the action of the movable spring, which facilitates the movement of the movable rod and the second sealing ring.

[0012] According to the aforementioned leak-proof electric butterfly valve, when the butterfly plate is fully closed, the second sealing ring is in contact with the outer wall of the butterfly plate under the action of the movable spring and the movable rod, which improves the sealing performance of the valve body and the connection between the butterfly plate, thereby improving the sealing performance of the electric butterfly valve.

[0013] The above-mentioned solution has the following beneficial effects:

[0014] 1. This leak-proof electric butterfly valve has an installation groove on the side of the butterfly plate, and a sealing ring is installed in the installation groove. At the same time, fixing holes are opened on the inner wall of the installation groove and on the sealing ring. By inserting the fixing bolt into the fixing hole corresponding to the sealing ring and the installation groove and tightening it, the position of the sealing ring in the installation groove can be fixed, preventing the sealing ring from loosening after long-term use, improving the installation stability of the sealing ring, and improving the sealing performance of the electric butterfly valve.

[0015] 2. This leak-proof electric butterfly valve has an installation plate installed on the inner wall of the valve body. A movable sleeve, a movable spring, and a movable rod are installed on one side of the installation plate. The movable spring drives the movable rod and the second sealing ring to move, so that the second sealing ring fits against the connection between the butterfly plate and the inner wall of the valve body without affecting the opening and closing of the butterfly plate, thus improving the sealing performance of the electric butterfly valve.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0018] Figure 1 This is a three-dimensional structural diagram of a leak-proof electric butterfly valve according to the present invention.

[0019] Figure 2 This is a side view of a leak-proof electric butterfly valve according to the present invention.

[0020] Figure 3 This is a schematic diagram of the internal structure of a leak-proof electric butterfly valve according to this utility model;

[0021] Figure 4 This is a cross-sectional view of a leak-proof electric butterfly valve according to this utility model.

[0022] Figure 5 This is a three-dimensional structural diagram of the butterfly plate of a leak-proof electric butterfly valve according to this utility model.

[0023] Figure 6 This is a three-dimensional structural diagram of the sealing ring of a leak-proof electric butterfly valve according to this utility model.

[0024] Legend:

[0025] 1. Valve body; 2. Electric drive unit; 3. Flange; 4. Flange hole; 5. Valve stem; 6. Butterfly plate; 7. Mounting groove; 8. Sealing ring one; 9. Fixing hole; 10. Mounting plate; 11. Movable sleeve; 12. Movable spring; 13. Movable rod; 14. Sealing ring two. Detailed Implementation

[0026] 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.

[0027] Reference Figure 1-6 This utility model embodiment provides a leak-proof electric butterfly valve, which includes: a valve body 1, an electric drive device 2 on the top of the valve body 1, a valve stem 5 rotatably connected inside the valve body 1, a butterfly plate 6 fixedly connected to the outer wall of the valve stem 5, an installation groove 7 on the outer wall of the butterfly plate 6, a sealing ring 8 movably connected inside the installation groove 7, and the sealing ring 8 is installed in the installation groove 7 by fixing bolts, thereby improving the stability of the installation of the sealing ring 8.

[0028] A mounting plate 10 is fixedly connected to the inner wall of the valve body 1. A movable sleeve 11 is fixedly connected to the inner side of the mounting plate 10. A movable spring 12 is fixedly connected inside the movable sleeve 11. A movable rod 13 is fixedly connected to one end of the movable spring 12. A sealing ring 14 is fixedly connected to the other end of the movable rod 13. Under the action of the movable spring 12 and the movable rod 13, the sealing ring 14 fits tightly against the connection between the inner wall of the valve body 1 and the butterfly plate 6, thereby enhancing the sealing performance of the electric butterfly valve.

[0029] Flanges 3 are fixedly connected to both sides of the valve body 1. Flange holes 4 are provided inside the flanges 3. The shape and size of the butterfly plate 6 match the shape and size of the inner wall of the valve body 1. The butterfly plate 6 is rotatably connected to the inner wall of the valve body 1, facilitating its opening and closing. The shape and size of the sealing ring 8 match the shape and size of the mounting groove 7. Fixing holes 9 are provided on both the outer wall of the sealing ring 8 and the inner wall of the mounting groove 7, and the shape, size, and position of the fixing holes 9 correspond to each other. The sealing ring 8 is fixed in the mounting groove 7 by fixing bolts and fixing holes 9, ensuring stable installation and preventing loosening even after prolonged use. This improves the sealing performance of the electric butterfly valve. Both sealing rings 14 are made of rubber. The shape and size of the movable rod 13 match the shape and size of the movable sleeve 11. Under the action of the movable spring 12, the movable rod 13 slides against the inner wall of the movable sleeve 11, facilitating the movement of the movable rod 13 and thus facilitating the movement of sealing rings 14. When the butterfly plate 6 is fully closed, sealing rings 14 adhere to the outer wall of the butterfly plate 6 under the action of the movable spring 12 and the movable rod 13. Under the elastic force of the movable spring 12, the movable rod 13 drives sealing rings 14 to adhere to the connection between the inner wall of the valve body 1 and the butterfly plate 6, strengthening the sealing performance at the connection between the inner wall of the valve body 1 and the butterfly plate 6, and effectively preventing leakage of the electric butterfly valve.

[0030] Working principle: The butterfly plate 6 of this electric butterfly valve has an installation groove 7 inside, and a sealing ring 8 is installed inside the installation groove 7. The sealing ring 8 is connected to the installation groove 7 by fixing bolts, which prevents the sealing ring 8 from loosening after long-term use. When the electric butterfly valve is in use, when the valve is opened, the butterfly plate 6 rotates and pushes the sealing ring 14 outward. The outward movement of the sealing ring 14 drives the movement of the movable rod 13 and compresses the movable spring 12. When the butterfly plate 6 is closed, as the butterfly plate 6 rotates, the elastic force of the movable spring 12 drives the movement of the movable rod 13 and the sealing ring 14. When the butterfly plate 6 is fully closed, the sealing ring 14 fits tightly against the connection between the butterfly plate 6 and the valve body 1, preventing leakage of the electric butterfly valve and improving the sealing performance of the electric butterfly valve.

[0031] 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, comprising: The valve body (1) is characterized in that an electric drive device (2) is provided on the top of the valve body (1), a valve stem (5) is rotatably connected inside the valve body (1), a butterfly plate (6) is fixedly connected to the outer wall of the valve stem (5), an installation groove (7) is provided on the outer wall of the butterfly plate (6), and a sealing ring (8) is movably connected inside the installation groove (7). The inner wall of the valve body (1) is fixedly connected to an installation plate (10), the inner side of the installation plate (10) is fixedly connected to a movable sleeve (11), the inside of the movable sleeve (11) is fixedly connected to a movable spring (12), one end of the movable spring (12) is fixedly connected to a movable rod (13), and the other end of the movable rod (13) is fixedly connected to a sealing ring (14).

2. The leak-proof electric butterfly valve according to claim 1, characterized in that, Flanges (3) are fixedly connected to both sides of the valve body (1), and flange holes (4) are provided inside the flanges (3).

3. The leak-proof electric butterfly valve according to claim 1, characterized in that, The shape and size of the butterfly plate (6) are matched with the shape and size of the inner wall of the valve body (1), and the butterfly plate (6) is rotatably connected to the inner wall of the valve body (1).

4. The leak-proof electric butterfly valve according to claim 1, characterized in that, The shape and size of the sealing ring (8) are matched with the shape and size of the mounting groove (7), and the outer wall of the sealing ring (8) and the inner wall of the mounting groove (7) are provided with fixing holes (9), and the shape, size and position of the fixing holes (9) are corresponding to each other.

5. The leak-proof electric butterfly valve according to claim 1, characterized in that, Both the sealing ring one (8) and the sealing ring two (14) are made of rubber material.

6. The leak-proof electric butterfly valve according to claim 1, characterized in that, The shape and size of the movable rod (13) are matched with the shape and size of the movable sleeve (11). The movable rod (13) is slidably connected to the inner wall of the movable sleeve (11) under the action of the movable spring (12).

7. The leak-proof electric butterfly valve according to claim 1, characterized in that, When the butterfly plate (6) is fully closed, the sealing ring 2 (14) is in contact with the outer wall of the butterfly plate (6) under the action of the movable spring (12) and the movable rod (13).

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