Multi-operating-condition valve sealing structure
A valve sealing, multi-working condition technology, applied in valve devices, cocks including cut-off devices, engine components, etc., can solve problems such as seal leakage
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[0017] In order to better understand the technical solution of the present invention, it will be described in detail below through specific embodiments in conjunction with the accompanying drawings:
[0018] see image 3 and Figure 4 , is an embodiment of a multi-working condition valve sealing structure of the present invention applied to a ball valve, including a sealing structure 100 at the front end of a valve core and a spring preload structure 200 .
[0019] The front sealing structure 100 of the valve core is located in the matching gap between the valve seat 600 and the valve body 500, including a diaphragm 110, a graphite sealing ring 120 and a pressing mechanism; the diaphragm 110 includes an outer diaphragm and an inner diaphragm, and the outer ring of the diaphragm is located On the radially outer side of the valve seat 600 , the diaphragm inner ring is clamped in the valve seat 600 , and the valve body 500 side of the diaphragm outer ring and both sides of the d...
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