Two eccentric butterfly valves

The utility model discloses a two eccentric butterfly valves, including valve body, main valve stem, auxiliary valve rod and butterfly plate, be provided with two connection bosss on butterfly joiningof plates face, two symmetrically central line and the focus of butterfly plate of skew this butterfly plate of connection boss to form two eccentric structures, two the connection boss on carry on the back the direction mutually on opened the blind hole respectively, one of them blind hole is the main valve stem connecting hole, another is the auxiliary valve rod connecting hole, be equipped with a blind hole as the auxiliary valve rod mounting hole with auxiliary valve rod connecting hole corresponding position on the valve body, auxiliary valve rod connecting hole and auxiliary valve rod mounting hole are inserted respectively to auxiliary valve rod's both ends, form rotatable coupling, the bottom of auxiliary valve rod mounting hole be provided with a plurality of thrust bearing, thrust bearing and the auxili