Tar filtering device of biomass gasifier

The utility model relates to the technical field of gasification furnace matching, in particular to a biomass gasification furnace tar filtering device which comprises a device body and a detachable cover, one side of the device body is fixedly connected with a clamping plate, one side of the detachable cover is fixedly connected with a connecting plate, one side of the connecting plate is fixedly provided with a compression spring, and the compression spring is fixedly connected with the clamping plate. And one side of the compression spring is fixedly connected with a clamping block. The filter device has the advantages that the service condition of the filter device can be judged by observing the color change of the adsorption cotton plate through the observation window, the clamping block is pressed inwards, the compression spring is subjected to compression deformation, under the resilience force action of the reset spring, the disassembly cover moves upwards, and meanwhile the clamping block is located