The present application belongs to the technical field of
heating system, and particularly relates to an
exhaust valve anti-blocking filter device and method for a
heating system. The device comprises a shell, a filter screen
assembly and a pipeline connecting piece. The shell has an inlet end and an outlet end. The filter screen
assembly is arranged in the shell and divides the inner cavity into a filtering cavity and a clean cavity. The connecting
assembly is arranged at the inlet end and the outlet end respectively to connect the heating pipeline. The filtering cavity is connected to the inlet end, and the clean cavity is connected to the outlet end. The filter screen assembly is used for intercepting
solid impurities. A gas-
solid separation flow guide structure is fixed to the inner side wall of the filtering cavity and located upstream of the filter screen assembly. The gas-
solid separation flow guide structure comprises a flow guide surface arranged obliquely relative to the
water flow direction to guide the circulating water to generate centrifugal
cyclone to separate gas-solid impurities. The
differential pressure monitoring assembly has a first pressure measuring port connected to the filtering cavity and a second pressure measuring port connected to the clean cavity to obtain the
differential pressure state of the two sides of the filter screen assembly in real time.