Patent ID: 9435572
Filing Date: 2016-09-06
CPC Classification: B01D,F25B

Claim Text:
1. A bidirectional filter, comprising a housing and at least two control valve components, two of the control valve components dividing an inner chamber of the housing into a filter chamber and two transitional chambers, each of the control valve components comprising a frame body fixed to an inner wall of the housing and an outlet blocking piece cooperating with an outlet of the frame body, the outlet blocking piece being located at an outer side of the frame body, wherein, the bidirectional filter further comprises a protective member located in each of the transitional chambers and fixed with respect to the housing, and the protective member has a protective surface opposite to an outer side surface of the outlet blocking piece; and wherein the protective member comprises a protective rod and a protective piece, the protective rod has a root end connected to the inner wall of the housing and a terminal end protruding towards the outlet blocking piece, the protective piece is connected to the terminal end of the protective rod, and the protective surface is formed on the protective piece.