Butterfly valve convenient to open

Abstract

The utility model discloses a butterfly valve convenient to open, which comprises a valve body, a flow channel for fluid to pass through is formed in the valve body, a butterfly plate is arranged in the flow channel, a valve rod connected with the butterfly plate and an actuator for controlling the valve rod to rotate are arranged on the valve body, and a pressure relief piece communicated with the interior of the flow channel is arranged on the valve body. The pressure relief piece comprises a pressure relief valve and a connecting pipe, a connecting part connected with the valve body is arranged at one end of the connecting pipe, a first arc-shaped end is formed between the connecting part and the connecting pipe, an opening is formed in the valve body, a second arc-shaped end surrounding the periphery of the opening is further formed in the valve body, and when the connecting pipe is inserted into the opening, the first arc-shaped end is connected with the second arc-shaped end. The first arc-shaped end is tightly attached to the second arc-shaped end, the connecting pipe is communicated with the flow channel and the pressure release valve, and a sealing piece connected with the connecting part is arranged in the valve body. The butterfly valve has the following advantages and effects that pressure can be relieved, and the situation that the butterfly valve is difficult to open due to overlarge pressure on one side is avoided.

Description

Technical Field

[0001] This utility model relates to the field of valves, and more specifically, to a butterfly valve that is easy to open. Background Technology

[0002] Butterfly valves are mainly used for shut-off and throttling in pipelines. The emergence of butterfly valves has brought great convenience to industries such as water supply, power generation and water treatment. However, there are still some shortcomings in the actual use of butterfly valves.

[0003] Butterfly valves are typically controlled manually by operating the top control panel. Existing butterfly valves have high pressure on one side of the valve body when shutting off, requiring a large actuator to open and close the valve. This is laborious, increases costs, and is difficult to install in some environments. Ordinary electric control structures are not easy to intelligently adjust the opening size of the valve body, and small actuators cannot open it. Therefore, there is an urgent need for a butterfly valve structure that can relieve pressure inside the valve to reduce the torque required for opening. Utility Model Content

[0004] This utility model provides a butterfly valve that is easy to open, and the valve is convenient to open and close by relieving pressure through a bypass.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a butterfly valve that is easy to open, comprising a valve body, a flow channel for fluid passage formed within the valve body, a butterfly plate disposed within the flow channel, a valve stem connected to the butterfly plate and an actuator for controlling the rotation of the valve stem disposed on the valve body, a pressure relief component communicating with the flow channel disposed on the valve body, the pressure relief component comprising a pressure relief valve and a connecting pipe, a connecting portion connecting to the valve body being disposed at one end of the connecting pipe, a first arc-shaped end being formed between the connecting portion and the connecting pipe, an opening being provided on the valve body, and a second arc-shaped end being formed around the outer periphery of the opening being formed on the valve body, when the connecting pipe is inserted into the opening, the first arc-shaped end is tightly abutting the second arc-shaped end and the connecting pipe communicates with the flow channel and the pressure relief valve, and a sealing element connecting the connecting portion is disposed within the valve body.

[0006] The present invention is further configured such that: the connecting part extends into a snap-fit ​​section, the valve body has a recessed locking groove that cooperates with it, and the snap-fit ​​section includes at least three snap-fit ​​protrusions.

[0007] The present invention is further configured such that: the sealing element includes a sealing ring and a push spring, the valve body is provided with a spring groove and the sealing ring slides in the spring groove, the push spring is provided in the spring groove and drives the sealing ring to move in the direction close to the connection part.

[0008] The present invention is further configured to include a fixing member, wherein the connecting pipe is provided with a threaded section, and when the connecting pipe is fixed to the valve body, the threaded section is located on the outside, and the fixing member is threadedly connected to the threaded section and tightly attached to the valve body.

[0009] The present invention is further configured to include a sealing element, wherein a second sealing groove is provided on the valve body, the second sealing groove is located at one end of the opening to the outside, the sealing element has a sealing protrusion that engages with the second sealing groove, and a sealing section extends to both sides, the fixing element pushes the sealing protrusion to engage in the second sealing groove, and the fixing element squeezes the sealing section.

[0010] The present invention is further configured such that: the two ends of the fixing member have extrusion protrusions, and the valve body has a recessed groove; when the extrusion protrusions are engaged with the groove, a sealing gap of extrusion sealing section is formed between the fixing member and the valve body.

[0011] This utility model has the following effects: a pressure relief valve is connected to one end of the valve body, which can relieve pressure inside the valve body and effectively avoid the situation where the valve is difficult to open when the pressure on one side is too high. Attached Figure Description

[0012] Figure 1 This is a perspective view of an embodiment of the present utility model;

[0013] Figure 2 This is a schematic diagram of the connecting pipe insertion structure according to an embodiment of the present utility model;

[0014] Figure 3 This is a perspective view of the connecting pipe in an embodiment of the present utility model.

[0015] In the diagram: 1. Valve body; 2. Connecting pipe; 22. Connecting part; 21. First arc-shaped end; 11. Second arc-shaped end; 223. Snap-fit ​​protrusion; 5. Sealing ring; 51. Push spring; 23. Threaded section; 13. Second sealing groove; 43. Sealing protrusion; 44. Sealing section; 7. Fixing component; 71. Extrusion protrusion; 73. Snap groove; 72. Sealing gap; 6. Pressure relief valve. Detailed Implementation

[0016] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0017] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0018] Reference Figures 1 to 3 The embodiments of this utility model will be further described below.

[0019] A butterfly valve that is easy to open includes a valve body 1, a flow channel for fluid passage formed within the valve body 1, a butterfly plate disposed within the flow channel, a valve stem connected to the butterfly plate and an actuator for controlling the rotation of the valve stem disposed on the valve body 1, and a pressure relief component communicating with the flow channel disposed on the valve body 1. The pressure relief component includes a pressure relief valve 6 and a connecting pipe 2, one end of the connecting pipe 2 being provided with a connecting portion 22 connecting to the valve body 1, and a first arc-shaped end 21 forming between the connecting portion 22 and the connecting pipe 2. 2. The valve body 1 is conical in shape. An opening is provided on the valve body 1. The valve body 1 also forms a second arc end 11 around the outer periphery of the opening. The second arc end 11 matches the first arc end 21. When the connecting pipe 2 is inserted into the opening, the connection is inserted from the opening in the flow channel, so that the first arc end 21 is close to the second arc end 11, and the body of the connecting pipe 2 is located on the outside. The connecting pipe 2 connects the flow channel and the pressure relief valve 6. A sealing element for the connecting part 22 is provided inside the valve body 1.

[0020] The connecting part 22 extends into a snap-fit ​​section, which is located outside the connecting part 22 and has a snap-fit ​​protrusion 223 protruding in the direction of the connecting pipe 2. The valve body 1 has a locking groove that matches it. The snap-fit ​​section includes at least three snap-fit ​​protrusions 223.

[0021] The sealing element also includes a sealing ring 5 and a push spring 51. The valve body 1 is provided with a spring groove and the sealing ring 5 slides in the spring groove. The connection port of the spring groove is located on the second arc end 11. The push spring 51 is provided in the spring groove and drives the sealing ring 5 to move in the direction close to the connection part 22. By setting the sealing ring 5 and the push spring 51, the sealing ring 5 can be tightly attached to the first arc end 21 to ensure sealing performance. The spring setting ensures that the sealing ring 5 can always be tightly attached to the first arc end 21.

[0022] Includes a fixing component 7. The connecting pipe 2 is provided with a threaded section 23. When the connecting pipe 2 is fixed to the valve body 1, the threaded section 23 is located on the outside. The fixing component 7 is threadedly connected to the threaded section 23 and closely attached to the valve body 1. The fixing component 7 is used to fix the connecting pipe 2 to ensure the fixation of the connecting pipe 2.

[0023] It also includes a sealing element, and the valve body 1 has a second sealing groove 13. The second sealing groove 13 is located at one end of the opening. The sealing element has a sealing protrusion 43 that engages with the second sealing groove 13, and sealing sections 44 extend to both sides. When the connecting pipe 2 is inserted into the opening, the sealing element is fitted onto the connecting pipe 2 and moved to the second sealing groove 13. Then the sealing element is rotated, and the fixing element 7 pushes the sealing protrusion 43 to engage in the second sealing groove 13. The fixing element 7 also squeezes the sealing section 44 to ensure a seal and cooperates with the sealing ring 5 to provide a double seal to ensure the sealing performance of the connecting pipe 2.

[0024] The two ends of the fixing member 7 have extrusion protrusions 71; the extrusion protrusions 71 are arranged around the outer periphery of the fixing member 7 and the cross section between them and the fixing block is L-shaped. When the fixing member 7 is fixed, a sealing gap 72 of extrusion sealing section 44 is formed between the fixing member 7 and the valve body 1. The valve body 1 has a recessed groove 73. The extrusion protrusion 71 is engaged with the connecting part 22 of the groove 73. A threaded hole can be opened and then fixed to the valve body 1 by bolts, which makes the locking with the fixing member 7 more stable.

[0025] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A butterfly valve that is easy to open, comprising a valve body (1), wherein a flow channel for fluid passage is formed within the valve body (1), a butterfly plate is disposed within the flow channel, and a valve stem connected to the butterfly plate and an actuator for controlling the rotation of the valve stem are disposed on the valve body (1), characterized in that: The valve body (1) is provided with a pressure relief component that connects to the flow channel. The pressure relief component includes a pressure relief valve (6) and a connecting pipe (2). One end of the connecting pipe (2) is provided with a connecting part (22) that connects to the valve body (1). A first arc-shaped end (21) is formed between the connecting part (22) and the connecting pipe (2). The valve body (1) has an opening. The valve body (1) also has a second arc-shaped end (11) that surrounds the outer periphery of the opening. When the connecting pipe (2) is inserted into the opening, the first arc-shaped end (21) is close to the second arc-shaped end (11) and the connecting pipe (2) connects to the flow channel and the pressure relief valve (6). The valve body (1) is provided with a sealing component that connects to the connecting part (22).

2. The butterfly valve for easy opening according to claim 1, characterized in that: The connecting part (22) extends into a snap-fit ​​section, and the valve body (1) has a recessed locking groove that matches it. The snap-fit ​​section includes at least three snap-fit ​​protrusions (223).

3. The butterfly valve for easy opening according to claim 1, characterized in that: The sealing element also includes a sealing ring (5) and a push spring (51). The valve body (1) is provided with a spring groove and the sealing ring (5) slides in the spring groove. The push spring (51) is provided in the spring groove and drives the sealing ring (5) to move in the direction close to the connection part (22).

4. The butterfly valve for easy opening according to claim 1, characterized in that: Includes a fastener (7), and the connecting pipe (2) is provided with a threaded section (23). When the connecting pipe (2) is fixed to the valve body (1), the threaded section (23) is located outside, and the fastener (7) is threadedly connected to the threaded section (23) and closely attached to the valve body (1).

5. A butterfly valve for easy opening according to claim 4, characterized in that: It also includes a sealing element. The valve body (1) has a second sealing groove (13) and the second sealing groove (13) is located at one end of the opening. The sealing element has a sealing protrusion (43) that engages with the second sealing groove (13) and a sealing section (44) extending to both sides. The fixing element (7) pushes the sealing protrusion (43) to engage in the second sealing groove (13) and the fixing element (7) squeezes the sealing section (44).

6. A butterfly valve for easy opening according to claim 5, characterized in that: The two ends of the fixing member (7) have protruding extrusion protrusions (71), and the valve body (1) has recessed grooves (73). When the extrusion protrusions (71) are engaged with the grooves (73), a sealing gap (72) of the extrusion sealing section (44) is formed between the fixing member (7) and the valve body (1).

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