Sealing structure of threaded valve cover
A technology of sealing structure and threaded valve, applied in the direction of valve shell structure, engine sealing, valve details, etc., can solve problems such as failure, increased weld stress, unfavorable valve sealing, etc., to reduce the length of the cantilever beam and reduce the deflection The amount is beneficial to the sealing effect of the disc
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[0014] Below in conjunction with accompanying drawing, the application is further described:
[0015] as attached figure 2 As shown, a threaded bonnet sealing structure, the bottom of the bonnet is flat, and there is a large gap between the valve body and the relief groove; a gasket is added between the valve body and the bonnet; the outer circle of the valve disc and the valve body The hole in the body cooperates with the guide, and the diameter of the inner hole of the valve cover is 0.5-1mm larger than the outer circle of the valve disc.
[0016] The technical features of the present invention are as follows: a sealing gasket is designed at the upper part of the valve body and the threaded step of the bonnet. Since there is a large gap between the valve body undercut and the valve body at the lower part of the bonnet, the gap makes the The thread relaxation caused by temperature and pressure changes will not affect the sealing effect of the gasket between the valve body a...
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