CHECK VALVE CAPABLE OF MINIMIZING THE DEGRADATION OF ELASTIC FORCE DUE TO ELASTIC FATIGUE OF AN ELASTIC MEMBER

摘要

PURPOSE: A check valve is provided to expand usable range by controlling blocking pressure, and to expand mounting range by easily applying the check valve to various pipe structures.;CONSTITUTION: A check valve comprises a fluid inflow part(10), a fluid discharge part(20), and a space part. The space part is formed between the fluid inflow part and the fluid discharge part to pass through fluid. One end of an elastic member(40) is fixed inside the fluid inflow part. The other end of the elastic member is fixed to form a fluid passage in a state where a blocking plate is spaced from the fluid inflow part at a predetermined interval. When the fluid does not flow or forwardly flows to the fluid inflow part, the fluid passage is formed by the interval without the bias of the elastic member. When the fluid backwardly flows, the elastic member is biased by the backward hydraulic pressure so that a fluid inflow port of the fluid inflow part can be closed by the blocking plate.;COPYRIGHT KIPO 2012