Tank bottom vacuum sampling ball valve
A sampling ball and vacuum technology, applied in the valve details, valve device, valve shell structure and other directions, can solve the problems of poor valve plate sealing, difficult maintenance, easy air leakage of the shaft center, etc., to prevent scalding, and the valve body has a compact structure Effect
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[0015] The present invention will be further described below in conjunction with specific drawings and embodiments.
[0016] As shown in the figure: the tank bottom vacuum sampling ball valve includes an upper valve body 3, a lower valve body 2, an upper valve seat 5, a lower valve seat 13 and a valve ball 6, and the upper valve body 3 and the lower valve body 2 are fixedly connected. The upper valve body 3 is equipped with an upper valve seat 5, an upper ball valve bearing 7 and a stem thrust bearing 8, and a lower valve seat 13 and a lower ball valve bearing 14 are installed in the lower valve body 2, and the upper valve seat 5 and the lower valve seat A valve ball 6 is installed between 13, a sampling cavity 19 is opened in the valve ball 6, a first plane 16 and a second plane 17 are opened on the valve ball 6, and the valve ball 6 sits on the ball valve bearing through the first plane 16 7, the valve ball 6 sits on the lower ball valve bearing 14 through the second plane 1...
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