Auxiliary soft sealing butterfly valve

Abstract

The utility model relates to an auxiliary soft sealing butterfly valve, which belongs to the technical field of valves, and comprises a valve body, a valve seat is embedded in the valve body, the valve seat is made of soft materials, the valve body is rotatably connected with a valve plate, a sealing surface of the valve plate is provided with a sealing groove, and two fixed end surfaces of the valve plate are provided with annular grooves for sealing the end surfaces; according to the auxiliary soft sealing butterfly valve, the soft valve seat is embedded into the sealing groove of the sealing face of the valve plate, the auxiliary sealing effect is achieved, meanwhile, the soft valve seat is embedded into the annular grooves of the two fixed end faces of the valve plate for end face sealing, and leakage is prevented; the sealing effect of the valve plate and the valve seat is good, opening and closing are easy, and the valve seat is not prone to damage.

Description

Technical Field

[0001] The utility model relates to an auxiliary soft-sealing butterfly valve, belonging to the technical field of valves. Background Art

[0002] The butterfly valve is a commonly used control valve, and its main features include: simple structure, small size, light weight, fast opening and closing, and labor-saving operation; it has good flow regulation function and can control the medium flow more accurately; butterfly valves are widely used in many fields, such as in pipeline systems in the petroleum, chemical, water treatment, urban heating and other industries, to control the flow, pressure and flow direction of fluids. However, the existing butterfly valve has the problem of poor sealing between the valve plate and the valve seat, and there is a gap between the two fixed end faces of the existing valve plate and the valve seat, which is easy to cause leakage. Utility Model Content

[0003] In view of the above deficiencies in the prior art, the technical problem to be solved by the utility model is to provide an auxiliary soft-sealed butterfly valve, in which the sealing effect between the valve plate and the valve seat is good, and the two fixed end faces of the valve plate and the valve seat are sealed and not easy to leak.

[0004] The auxiliary soft-sealed butterfly valve described in the utility model comprises a valve body, in which a valve seat is embedded and installed, the valve seat is made of soft material, the valve body is rotatably connected to a valve plate, a sealing groove is provided on the sealing surface of the valve plate, and annular grooves for sealing the end surfaces are provided on the two fixed end surfaces of the valve plate.

[0005] The technical solution of the utility model is to provide an auxiliary soft-sealed butterfly valve. When the valve is closed, the soft valve seat will be embedded in the sealing groove on the sealing surface of the valve plate to play an auxiliary sealing role, and the soft valve seat will also be embedded in the annular grooves on the two fixed end faces of the valve plate for sealing.

[0006] Preferably, both sides of the valve plate sealing surface are provided with rounded corners to facilitate opening and closing of the valve; the sealing groove is in an arc shape, which can reduce the torque when the valve is opened and closed, and avoid damage to the valve seat during opening and closing.

[0007] Preferably, a valve shaft is passed through the valve plate, and the valve plate is rotatably connected to the valve body via the valve shaft.

[0008] Preferably, the valve shaft is sleeved with an O-ring and a bushing, the number of the O-rings is multiple, the valve shaft is sealed with the valve body through the O-rings, the bushing is located between the O-rings, and the bushing is used to support the rotation of the valve shaft.

[0009] Preferably, a gland and a bottom end cover are also installed on the valve body, and the gland and the bottom end cover are used to compress the O-ring and the bushing to prevent them from moving on the valve shaft.

[0010] Compared with the prior art, the utility model has the following beneficial effects:

[0011] The auxiliary soft-sealed butterfly valve described in the utility model plays an auxiliary sealing role by embedding the soft valve seat into the sealing groove of the valve plate sealing surface. At the same time, the soft valve seat is embedded in the annular grooves of the two fixed end faces of the valve plate to perform end face sealing to prevent leakage. The valve plate and the valve seat of the utility model have good sealing effect, are easy to open and close, and the valve seat is not easy to be damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the utility model;

[0013] Figure 2 yes Figure 1 AA section view;

[0014] Figure 3 yes Figure 2 A partial enlarged view of area B.

[0015] In the figure: 1. gland; 2. bushing; 3. valve body; 4. bottom end cover; 5. valve seat; 6. O-ring; 7. valve shaft; 8. valve plate; 81. annular groove; 82. sealing groove; 83. fillet. DETAILED DESCRIPTION

[0016] The utility model is further described below in conjunction with specific embodiments.

[0017] However, the description of the present invention is merely an embodiment of structural and even functional description, and the scope of rights of the present invention is not limited by the embodiments described in the text.

[0018] For example, multiple embodiments may have multiple changes and multiple forms, and it should be understood that the scope of rights of the present utility model includes equivalents that can realize the technical idea.

[0019] like Figures 1 to 3 As shown, this embodiment is implemented by the following technical scheme: it includes a valve body 3, in which a valve seat 5 is embedded and installed, the valve seat 5 is made of rubber material, the valve body 3 is rotatably connected to a valve plate 8, a sealing groove 82 is provided on the sealing surface of the valve plate 8, and an annular groove 81 for sealing the end surfaces is provided on the two fixed end surfaces of the valve plate 8.

[0020] In this embodiment, both sides of the sealing surface of the valve plate 8 are provided with fillets 83 to facilitate the opening and closing of the valve; the sealing groove 82 is in an arc shape, which can reduce the torque when the valve is opened and closed, and avoid damage to the valve seat 5 when opening and closing. The valve plate 8 is provided with a valve shaft 7, and the valve plate 8 is rotatably connected to the valve body 3 through the valve shaft 7.

[0021] The valve shaft 7 is sleeved with an O-ring 6 and a bushing 2, the number of the O-rings 6 is multiple, the valve shaft 7 forms a seal with the valve body 3 through the O-rings 6, the bushing 2 is located between the O-rings 6, and the bushing 2 is used to support the rotation of the valve shaft 7. The valve body 3 is also equipped with a gland 1 and a bottom end cover 4, which are used to compress the O-ring 6 and the bushing 2 to prevent them from moving on the valve shaft 7.

[0022] Of course, the above contents are only preferred embodiments of the present invention and cannot be considered to limit the scope of the embodiments of the present invention. The present invention is not limited to the above examples, and any equivalent changes and improvements made by ordinary technicians in the technical field within the essential scope of the present invention shall fall within the scope of the patent coverage of the present invention.

Claims

1. An auxiliary soft-sealed butterfly valve, characterized in that: The invention comprises a valve body (3), a valve seat (5) is embedded in the valve body (3), the valve seat (5) is made of soft material, the valve body (3) is rotatably connected to a valve plate (8), a sealing groove (82) is provided on the sealing surface of the valve plate (8), and an annular groove (81) for sealing the end surfaces is provided on the two fixed end surfaces of the valve plate (8).

2. The auxiliary soft-sealed butterfly valve according to claim 1, characterized in that: Rounded corners (83) are provided on both sides of the sealing surface of the valve plate (8), and the sealing groove (82) is in an arc shape.

3. The auxiliary soft-sealed butterfly valve according to claim 2, characterized in that: The valve plate (8) is provided with a valve shaft (7), and the valve plate (8) is rotatably connected to the valve body (3) via the valve shaft (7).

4. The auxiliary soft-sealed butterfly valve according to claim 3, characterized in that: The valve shaft (7) is sleeved with an O-ring (6) and a bushing (2), the number of the O-rings (6) is multiple, the valve shaft (7) forms a seal with the valve body (3) through the O-ring (6), and the bushing (2) is located between the O-rings (6).

5. The auxiliary soft-sealed butterfly valve according to claim 3, characterized in that: A gland (1) and a bottom end cover (4) are also installed on the valve body (3).

Images