Butterfly valve convenient to overhaul

Abstract

The utility model discloses a butterfly valve convenient to maintain. The butterfly valve comprises a valve body. According to the device disclosed by the utility model, the second flange is connected with the first pipe body through the second fixing bolt, the second sealing ring and the fixing nut, one end of the third flange is connected with the first pipe body, the first pipe body moves in the mixing barrel through the movable plug, and then the first fixing bolt is rotated to drive the first sealing ring in the convex block to fix the first pipe body; meanwhile, a first sealing ring is arranged to prevent water from being discharged, a first pipe body passes through a protruding block and the first sealing ring, water flowing out through a gap is reduced, the connecting position of the first pipe body and the valve body is detached, meanwhile, the first pipe body stretches out and draws back through a second pipe body, and therefore the interior of the valve body can be conveniently overhauled and maintained; meanwhile, the operation space of workers is increased, and the practicability of the device is improved.

Description

Technical Field

[0001] This utility model relates to the field of pipeline valve technology, specifically to a butterfly valve that is easy to maintain. Background Technology

[0002] A butterfly valve, also known as a flap valve, is a simple regulating valve that can be used for on / off control of low-pressure pipeline media. A butterfly valve is a type of valve in which the closing element (valve disc or butterfly plate) is a disc that rotates around the valve shaft to achieve opening and closing.

[0003] For butterfly valves used for a long time, regular maintenance is required. However, during disassembly, due to prolonged operation, the two pipes connected to the butterfly valve may become compressed or stuck together with time and pressure, even after the flange bolts are removed, making it impossible to remove directly. In such cases, an expander is often used to widen the gap between the butterfly valve and the pipe to remove it. However, when an expander is not available, using other tools to pry can damage the connecting end plane, affecting the sealing effect later. Therefore, a butterfly valve that can be easily removed without the use of an expander when compressed or stuck is needed. Utility Model Content

[0004] To address the issues raised in the appeal, this utility model provides a butterfly valve that is easy to maintain, thereby resolving the problems mentioned in the background art.

[0005] To address the aforementioned problems, the specific technical solution adopted by this utility model is as follows:

[0006] A butterfly valve that is easy to maintain includes a valve body, a second flange provided on one side surface of the valve body, a groove provided on one side surface of the second flange, and a second sealing ring provided in the groove. A through groove is opened on one side surface of the second flange, and a second fixing bolt is inserted into the through groove. A third flange is connected to the second flange through the second fixing bolt. A first pipe body is connected to one side surface of the third flange, and the first pipe body is inserted into the second pipe body.

[0007] Furthermore, a protrusion is provided on one side surface of the second tube body, and a first fixing bolt is provided on the top surface of the protrusion. A first sealing ring is provided on the bottom surface of the protrusion, and the first sealing ring is located inside the second tube body.

[0008] Furthermore, the second fixing bolt is threaded with a fixing nut.

[0009] Furthermore, a first flange is provided on one side surface of the valve body.

[0010] Furthermore, a fourth flange is provided on one side surface of the second pipe body.

[0011] Furthermore, a plurality of protrusions are provided, and the plurality of protrusions are provided on one side surface of the second tube body.

[0012] Compared with the prior art, this utility model provides a butterfly valve that is easy to maintain and has the following advantages:

[0013] (1) This utility model adopts a first pipe body, a second pipe body, a protrusion and a first sealing ring. In actual use, the first pipe body is connected to the second flange through the second fixing bolt, the second sealing ring and the fixing nut, and the first pipe body is connected to one end of the third flange. The first pipe body moves in the mixing cylinder through the movable plug. Then, the first sealing ring in the protrusion is driven by rotating the first fixing bolt to fix the first pipe body. At the same time, the first sealing ring prevents water from being discharged. The first pipe body reduces the water from flowing out through the gap through the protrusion and the first sealing ring. By disassembling the connection between the first pipe body and the valve body, the first pipe body can extend and retract through the second pipe body, which facilitates the inspection and maintenance of the valve body. At the same time, it increases the operating space of the staff and increases the practicality of the device. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of a butterfly valve that is easy to maintain, as proposed in this utility model.

[0016] Figure 2 This is a schematic diagram of the internal structure of a butterfly valve that is easy to maintain according to this utility model;

[0017] Figure 3 This is a schematic diagram of the valve body of this utility model;

[0018] Figure 4 This is an enlarged view of point A of a butterfly valve that is easy to inspect and maintain according to this utility model.

[0019] In the picture:

[0020] 1. Valve body; 2. First flange; 3. Second flange; 4. First pipe body; 5. Second pipe body; 6. Third flange; 7. Protrusion; 8. First fixing bolt; 9. Fourth flange; 10. Groove; 11. First sealing ring; 12. Second fixing bolt; 13. Fixing nut; 14. Second sealing ring; 15. Through groove. Detailed Implementation

[0021] To further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0022] According to an embodiment of the present invention, a butterfly valve that is easy to maintain is provided.

[0023] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments, such as... Figure 1-4 As shown, a butterfly valve for easy maintenance according to an embodiment of the present invention includes a valve body 1. A second flange 3 is provided on one side surface of the valve body 1, and a groove 10 is provided on one side surface of the second flange 3. A second sealing ring 14 is provided in the groove 10. A through groove 15 is opened on one side surface of the second flange 3, and a second fixing bolt 12 is inserted into the through groove 15. A third flange 6 is connected to the second flange 3 through the second fixing bolt 12. A first pipe 4 is connected to one side surface of the third flange 6, and the first pipe 4 is inserted into a second pipe 5. The first pipe 4 can extend and retract through the second pipe 5, which facilitates the maintenance of the valve body 1 after the first pipe 4 is disassembled.

[0024] In one embodiment, a protrusion 7 is provided on one side surface of the second tube body, and a first fixing bolt 8 is provided on the top surface of the protrusion 7. A first sealing ring 11 is provided on the bottom surface of the protrusion 7, and the first sealing ring 11 is disposed inside the second tube body 5. Rotating the fixing bolt can drive the first sealing ring 11 to clamp the first tube body 4.

[0025] In one embodiment, the second fixing bolt 12 is threadedly connected to a fixing nut 13.

[0026] In one embodiment, a first flange 2 is provided on one side surface of the valve body 1.

[0027] In one embodiment, a fourth flange 9 is provided on one side surface of the second pipe body 5.

[0028] In one embodiment, a plurality of protrusions 7 are provided, and the plurality of protrusions 7 are provided on one side surface of the second tube body 5.

[0029] Working principle: The first pipe body 4 is connected to the second flange 3 via the second fixing bolt 12, the second sealing ring 14, and the fixing nut 13. The first pipe body 4 is also connected to one end of the third flange. The first pipe body 4 moves inside the mixing cylinder via a movable plug. The first fixing bolt 8 is rotated to drive the first sealing ring 11 inside the protrusion 7 to fix the first pipe body 4. At the same time, the first sealing ring 11 prevents water from being discharged. The first pipe body reduces the leakage of water through gaps by using the protrusion 7 and the first sealing ring 11. By disassembling the connection between the first pipe body 4 and the valve body 1, and by extending and retracting the first pipe body 4 via the second pipe body 5, it is convenient to inspect and maintain the inside of the valve body 1, while increasing the operating space for the staff and increasing the practicality of the device.

[0030] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A butterfly valve that is easy to maintain, comprising a valve body (1), characterized in that, The valve body (1) has a second flange (3) on one side surface, and a groove (10) on one side surface of the second flange (3) is provided, and a second sealing ring (14) is provided in the groove (10). A through groove (15) is opened on one side surface of the second flange (3), and a second fixing bolt (12) is inserted in the through groove (15). The second flange (3) is connected to a third flange (6) through the second fixing bolt (12). A first pipe body (4) is connected to one side surface of the third flange (6), and the first pipe body is inserted into the second pipe body (5).

2. The butterfly valve for easy maintenance according to claim 1, characterized in that, The second tube body has a protrusion (7) on one side surface, and a first fixing bolt (8) is provided on the top surface of the protrusion (7). A first sealing ring (11) is provided on the bottom surface of the protrusion (7), and the first sealing ring (11) is located inside the second tube body (5).

3. The butterfly valve for easy maintenance according to claim 1, characterized in that, The second fixing bolt (12) is threaded with a fixing nut (13).

4. The butterfly valve for easy maintenance according to claim 1, characterized in that, A first flange (2) is provided on one side surface of the valve body (1).

5. A butterfly valve for easy maintenance according to claim 1, characterized in that, A fourth flange (9) is provided on one side surface of the second pipe body (5).

6. A butterfly valve for easy maintenance according to claim 2, characterized in that, The bumps (7) are provided in multiple ways, and the multiple bumps (7) are provided on one side surface of the second tube body (5).

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