Self-sealing butterfly valve
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United States of America Patent
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Jun 12, 2018
Issued Date -
N/A
app pub date -
Aug 12, 2014
filing date -
Aug 20, 2013
priority date (Note) -
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Abstract
A self-sealing butterfly valve includes a valve body, wherein a fluid passage is provided in the valve body, a valve plate of which an outer surface is covered with an elastic sealing layer is provided within the fluid passage, an upper portion of the valve plate is dynamically connected with a driving shaft which is rotatably connected to the valve body, a lower portion of the valve plate is rotatably connected with a supporting shaft which is connected to the valve body, the elastic sealing layer—at outer edges of two end faces of the valve plate axially protrudes outwardly, forming two ring lips attached to an inner wall of the fluid passage, and the ring lips are gradually thicker from outside to inside, so that inner ring faces of the ring lips are inclined faces.
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