Combined sealing ring structure of rhomboic valve
A composite sealing ring and rhombic valve technology, applied in the direction of engine sealing, sliding valves, valve devices, etc., to achieve superior air tightness, good wear resistance, and prolong service life
Inactive Publication Date: 2012-12-12
WUXI GL TUBRO COMPRESSOR
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- Application Information
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Problems solved by technology
However, because the valve plate needs to be opened and closed frequently, the sealing ring and the valve plate are always in a state of friction, and the rubber material has poor wear resistance, so there is a disadvantage of poor durability.
Method used
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Embodiment Construction
[0009] Below the present invention will be further described in conjunction with the embodiment in the accompanying drawing:
[0010] Such as figure 1 Shown: a diamond-shaped valve includes valve body 1 (left valve body 1a, right valve body 1b), valve plate 2, O-ring 3, valve seat ring 4 and composite seal ring 5 (polytetrafluoroethylene part 5a, Viton part 5b). The valve plate 2 is clamped between the left valve body 1a and the right valve body 1b, and the left valve body 1a and the right valve body 1b are fastened and connected by bolts. A valve seat ring 4 is embedded between the valve plate 2 and the valve body 1 . An O-ring 3 is embedded between the seat ring 4 and the valve body 1 . The composite sealing ring 5 is located between the valve seat ring 4 and the valve plate 2, and is formed by bonding a polytetrafluoroethylene part 5a and a fluorine rubber part 5b. The polytetrafluoroethylene part 5a is a thin layer, which is tightly attached to the valve plate 2 to en...
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The invention relates to a combined sealing ring, and in particular relates to a combined sealing ring structure applied to a rhomboic valve. The combined sealing ring structure comprises a combined sealing ring, wherein the combined sealing ring is formed by adhering a polytetrafluoroethylene part and a fluororubber part, wherein the fluororubber part is of a U-shaped structure; and the polytetrafluoroethylene part is attached to the outer side of the fluororubber part. By the combined sealing ring, the working face adopts the polytetrafluoroethylene part, so that a sealing device is high in abrasion resistance, and the service life of the rhomboic valve is prolonged; the non-working face adopts the fluororubber U-shaped structure and is compressed to produce elasticity, so that the sealing ring is tightly attached to a valve plate, and the shortcoming of low polytetrafluoroethylene tightness is overcome; and an O-shaped sealing ring is arranged between a valve seat ring and a valve body, so that due to such dual sealing, the high air tightness of the rhomboic valve is guaranteed.
Description
technical field [0001] The invention relates to a composite sealing ring, in particular it is a composite sealing ring structure applied to a rhombic valve. Background technique [0002] The diamond-shaped electric control valve is generally used to adjust the air volume in the air pipeline of the biological oxidation tank of the sewage treatment process. The shape of the flow path of the diamond valve is diamond, and the connection form with the pipeline is flange connection. It is mainly composed of valve body, valve plate, bracket, driving device, sealing ring and positioning pin. The diamond valve controls the area of the flow channel by moving the valve plate up and down, thereby adjusting the air flow in the pipeline. ZL patent number is 201010513587.8, and the invention name is sewage treatment aeration flow regulating valve. In the sealing structure of the valve plate and the valve body, the seal between the valve plate and the valve body is generally a rubber O...
Claims
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IPC IPC(8): F16K3/30F16J15/18
Inventor 金华明
Owner WUXI GL TUBRO COMPRESSOR