Leak-proof butterfly valve

Abstract

The utility model relates to the technical field of butterfly valves, and discloses an anti-leakage butterfly valve which comprises a valve body assembly, an opening and closing piece assembly is installed on the top of the valve body assembly, connector assemblies are installed on the two sides of the valve body assembly respectively, positioning bolts are installed on the side faces of the connector assemblies, and the valve body assembly comprises a valve body main body. An arc-shaped sealing plate is fixedly connected to the inner side of the valve body main body, a connecting positioning groove is formed in the bottom of the inner side of the valve body main body, a positioning platform is fixedly connected to the top of the valve body main body, and a rotating positioning groove is formed in the top of the positioning platform; in the using process, the connector assembly is welded to a pipeline needing to be connected, and due to the fact that the valve body assembly and the connector assembly can be effectively sealed through the sealing ring in the connecting process of the valve body assembly and the connector assembly, the situation that the valve body assembly and the connector assembly are damaged in the using process of equipment is avoided. And the situation of liquid leakage at two sides is avoided.

Description

Technical Field

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

[0002] The butterfly valve works by having its disc-shaped opening and closing element (butterfly plate) reciprocate approximately 90° within the valve body, thereby opening, closing, or regulating the flow of the medium. The butterfly plate rotates around its axis within the cylindrical channel of the valve body; when it rotates 90°, the butterfly valve is fully open.

[0003] Existing butterfly valves have some shortcomings in their use, as follows: Existing butterfly valves achieve the opening, closing, or flow regulation of the medium by reciprocating approximately 90° within the valve body using their disc-shaped opening and closing element. However, during use, a small amount of liquid may leak between the opening and closing element and the inside of the valve body, making it difficult to ensure the sealing performance of the butterfly valve. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a leak-proof butterfly valve to solve the problems existing in the background art.

[0005] This utility model provides the following technical solution: a leak-proof butterfly valve, including a valve body assembly, an opening and closing component assembly installed on the top of the valve body assembly, interface components installed on both sides of the valve body assembly, positioning bolts installed on the sides of the interface components, the valve body assembly including a valve body main body, an arc-shaped sealing plate fixedly connected to the inner side of the valve body main body, a connecting positioning groove opened at the bottom of the inner side of the valve body main body, a positioning platform fixedly connected to the top of the valve body main body, a rotating positioning groove opened at the top of the positioning platform, and first positioning lugs fixedly connected to both sides of the outer side of the valve body main body.

[0006] Furthermore, the opening and closing component assembly includes a rotating shaft, a positioning notch on one side of the rotating shaft, an opening and closing component body installed inside the positioning notch, sealing rubber layers fixedly connected to both sides of the opening and closing component body, a positioning pin installed on one side of the opening and closing component body, a first sealing cover plate fixedly connected to one side of the opening and closing component body, a second sealing cover plate fixedly connected to the other side of the rotating shaft, a positioning circular plate installed on the top of the rotating shaft, and a rotating handle installed on one side of the positioning circular plate.

[0007] Furthermore, the interface assembly includes a sealing disc, a second positioning lug is fixedly connected to the outer side of the sealing disc, a sealing ring is installed on the side of the sealing disc near the valve body assembly, and a connecting pipe is fixedly connected to the side of the sealing disc away from the valve body assembly.

[0008] Furthermore, the horizontal distance between the two arc-shaped sealing plates on the inner side of the valve body is the same as the thickness of the opening and closing component body, and the projected shape and size of the two sides of the valve body assembly are the same as the shape of the side of the interface assembly.

[0009] Furthermore, the outer diameter of the opening / closing component body is clearance-fitted with the inner diameter of the valve body body, and the bottom of the outer side of the rotating shaft is connected to the connecting positioning groove via a bearing.

[0010] Furthermore, the diameter of the rotary positioning groove is clearance-fitted with the diameter of the top outer side of the rotary shaft, and a sealing groove is provided on the side of the sealing disc near the valve body assembly, with the size of the sealing groove of the sealing disc transition-fitted with the sealing ring.

[0011] Furthermore, a first positioning hole is provided on the side of the first positioning ear, and a second positioning hole is provided on the side of the second positioning ear. The size of the first positioning hole of the first positioning ear is the same as the diameter of the second positioning hole of the second positioning ear.

[0012] The technical effects and advantages of this utility model are as follows:

[0013] 1. In the process of using this utility model, the interface component is welded to the pipeline to be connected. During the connection between the valve body component and the interface component, the sealing ring can effectively seal the valve body component and the interface component, thus preventing liquid leakage from both sides during the use of the equipment.

[0014] 2. When the valve needs to be closed, this utility model rotates the handle, which in turn drives the rotating shaft to rotate. Under the positioning of the locating pin, the main body of the valve body rotates, causing the sealing rubber layer to adhere to the arc-shaped sealing plate. Under continuous compression, the liquid flowing through the valve body is effectively cut off. The cooperation between the sealing rubber layer and the arc-shaped sealing plate effectively seals the four sides of the valve body. Then, the first and second sealing covers seal the positioning point of the valve body at the locating pin, effectively cutting off the water flow through the valve body assembly and preventing liquid leakage. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This is a cross-sectional structural diagram of the present invention.

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

[0018] Figure 4This is a schematic diagram of the opening and closing component assembly of this utility model.

[0019] Figure 5 This is a schematic diagram of the interface component structure of this utility model.

[0020] The attached figures are labeled as follows: 1. Valve body assembly; 101. Valve body main body; 102. Arc-shaped sealing plate; 103. Connecting positioning groove; 104. First positioning lug; 105. Positioning platform; 106. Rotary positioning groove; 2. Opening and closing component assembly; 201. Rotating shaft; 202. Positioning notch; 203. Opening and closing component main body; 204. Sealing rubber layer; 205. Positioning pin; 206. First sealing cover plate; 207. Second sealing cover plate; 208. Positioning circular plate; 209. Rotating handle; 3. Interface assembly; 301. Sealing circular plate; 302. Second positioning lug; 303. Sealing ring; 304. Connecting pipe; 4. Positioning bolt. Detailed Implementation

[0021] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. The anti-leakage butterfly valve involved in this utility model is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] Reference Figure 1-5 This utility model provides a leak-proof butterfly valve, including a valve body assembly 1, an opening and closing component assembly 2 installed on the top of the valve body assembly 1, interface components 3 installed on both sides of the valve body assembly 1, and positioning bolts 4 installed on the sides of the interface components 3. The valve body assembly 1 includes a valve body main body 101, an arc-shaped sealing plate 102 fixedly connected to the inner side of the valve body main body 101, a connecting positioning groove 103 opened at the bottom of the inner side of the valve body main body 101, a positioning platform 105 fixedly connected to the top of the valve body main body 101, a rotating positioning groove 106 opened at the top of the positioning platform 105, and first positioning lugs 104 fixedly connected to both sides of the outer side of the valve body main body 101. During use, the interface components 3 are welded to the pipes to be connected. During the connection between the valve body assembly 1 and the interface components 3, the sealing ring 303 can effectively seal the valve body assembly 1 and the interface components 3, preventing liquid leakage from both sides during use.

[0023] In a preferred embodiment, the valve opening / closing component 2 includes a rotating shaft 201. A positioning notch 202 is provided on one side of the rotating shaft 201. A valve opening / closing component body 203 is installed inside the positioning notch 202. Sealing rubber layers 204 are fixedly connected to both sides of the valve opening / closing component body 203. A positioning pin 205 is installed on one side of the valve opening / closing component body 203. A first sealing cover plate 206 is fixedly connected to one side of the valve opening / closing component body 203. A second sealing cover plate 207 is fixedly connected to the other side of the rotating shaft 201. A positioning circular plate 208 is installed on the top of the rotating shaft 201. A rotating handle 209 is installed on one side of the positioning circular plate 208. When it is necessary to close the valve, the rotating handle 209 is rotated. 9. This drives the rotating shaft 201 to rotate, and under the positioning of the positioning pin 205, it drives the main body 203 of the opening and closing component to rotate, causing the sealing rubber layer 204 to adhere to the arc-shaped sealing plate 102. Under continuous compression, the liquid passing through the valve body 101 is effectively cut off. The cooperation between the sealing rubber layer 204 and the arc-shaped sealing plate 102 can effectively seal the four sides of the main body 203 of the opening and closing component. Then, the first sealing cover plate 206 and the second sealing cover plate 207 can seal the positioning point of the positioning pin 205 on the main body 203 of the opening and closing component, effectively cutting off the water flow through the valve body assembly 1 and preventing liquid leakage.

[0024] In a preferred embodiment, the interface assembly 3 includes a sealing disc 301, a second positioning lug 302 is fixedly connected to the outer side of the sealing disc 301, a sealing ring 303 is installed on the side of the sealing disc 301 near the valve body assembly 1, and a connecting pipe 304 is fixedly connected to the side of the sealing disc 301 away from the valve body assembly 1.

[0025] In a preferred embodiment, the horizontal distance between the two arc-shaped sealing plates 102 on the inner side of the valve body 101 is the same as the thickness of the opening and closing body 203, and the projected shape and size of the two sides of the valve body assembly 1 are the same as the shape of the side of the interface assembly 3.

[0026] In a preferred embodiment, the outer diameter of the opening / closing component body 203 is clearance-fitted with the inner diameter of the valve body body 101, and the bottom of the outer side of the rotating shaft 201 is connected to the connecting positioning groove 103 via a bearing.

[0027] In a preferred embodiment, the diameter of the rotary positioning groove 106 is clearance-fitted with the diameter of the outer top of the rotary shaft 201, and a sealing groove is provided on the side of the sealing disc 301 near the valve body assembly 1, and the size of the sealing groove of the sealing disc 301 is transition-fitted with the sealing ring 303.

[0028] In a preferred embodiment, a first positioning hole is provided on the side of the first positioning lug 104, and a second positioning hole is provided on the side of the second positioning lug 302. The size of the first positioning hole of the first positioning lug 104 is the same as the diameter of the second positioning hole of the second positioning lug 302.

[0029] The working principle of this utility model is as follows: During use, the interface component 3 is welded to the pipe to be connected. During the connection between the valve body component 1 and the interface component 3, the sealing ring 303 can effectively seal the valve body component 1 and the interface component 3, thus preventing liquid leakage from both sides during the use of the equipment.

[0030] When the valve needs to be closed, the rotating handle 209 is turned, which in turn drives the rotating shaft 201 to rotate. Under the positioning of the positioning pin 205, the main body 203 of the valve body rotates, causing the sealing rubber layer 204 to adhere to the arc-shaped sealing plate 102. Under continuous compression, the liquid passing through the valve body 101 is effectively cut off. The cooperation between the sealing rubber layer 204 and the arc-shaped sealing plate 102 effectively seals the four sides of the main body 203 of the valve body. Then, the first sealing cover plate 206 and the second sealing cover plate 207 seal the positioning point of the positioning pin 205 on the main body 203 of the valve body, effectively cutting off the water flow through the valve body assembly 1 and preventing liquid leakage.

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

Claims

1. A leak-proof butterfly valve, comprising a valve body assembly (1), characterized in that: The valve body assembly (1) is equipped with an opening and closing component assembly (2) on its top. Interface components (3) are installed on both sides of the valve body assembly (1). Positioning bolts (4) are installed on the side of the interface components (3). The valve body assembly (1) includes a valve body body (101). An arc-shaped sealing plate (102) is fixedly connected to the inner side of the valve body body (101). A connecting positioning groove (103) is opened at the bottom of the inner side of the valve body body (101). A positioning platform (105) is fixedly connected to the top of the valve body body (101). A rotating positioning groove (106) is opened at the top of the positioning platform (105). First positioning lugs (104) are fixedly connected to both sides of the outer side of the valve body body (101).

2. The anti-leakage butterfly valve according to claim 1, characterized in that: The opening and closing component assembly (2) includes a rotating shaft (201), a positioning notch (202) is provided on one side of the rotating shaft (201), an opening and closing component body (203) is installed inside the positioning notch (202), a sealing rubber layer (204) is fixedly connected to both sides of the opening and closing component body (203), a positioning pin (205) is installed on one side of the opening and closing component body (203), a first sealing cover plate (206) is fixedly connected to one side of the opening and closing component body (203), a second sealing cover plate (207) is fixedly connected to the other side of the rotating shaft (201), a positioning circular plate (208) is installed on the top of the rotating shaft (201), and a rotating handle (209) is installed on one side of the positioning circular plate (208).

3. The anti-leakage butterfly valve according to claim 2, characterized in that: The interface assembly (3) includes a sealing disc (301), a second positioning lug (302) is fixedly connected to the outer side of the sealing disc (301), a sealing ring (303) is installed on the side of the sealing disc (301) close to the valve body assembly (1), and a connecting pipe (304) is fixedly connected to the side of the sealing disc (301) away from the valve body assembly (1).

4. The anti-leakage butterfly valve according to claim 2, characterized in that: The horizontal distance between the two arc-shaped sealing plates (102) on the inner side of the valve body (101) is the same as the thickness of the opening and closing body (203). The projected shape and size of the valve body assembly (1) on both sides are the same as the shape of the side of the interface assembly (3).

5. A leak-proof butterfly valve according to claim 2, characterized in that: The outer diameter of the opening / closing component body (203) is clearance-fitted with the inner diameter of the valve body body (101), and the bottom of the outer side of the rotating shaft (201) is connected to the connecting positioning groove (103) via a bearing.

6. The anti-leakage butterfly valve according to claim 3, characterized in that: The diameter of the rotary positioning groove (106) is clearance-fitted with the diameter of the top outer side of the rotary shaft (201). The sealing disc (301) has a sealing groove on the side near the valve body assembly (1). The size of the sealing groove of the sealing disc (301) is transition-fitted with the sealing ring (303).

7. A leak-proof butterfly valve according to claim 3, characterized in that: The first positioning lug (104) has a first positioning hole on its side, and the second positioning lug (302) has a second positioning hole on its side. The size of the first positioning hole of the first positioning lug (104) is the same as the diameter of the second positioning hole of the second positioning lug (302).

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