Compressed air filtering device

The utility model belongs to the technical field of compressed air filtering equipment, in particular relates to a compressed air filtering device, and aims to solve the problem that the conventional compressed air filtering device is inconvenient to clean dust and impurities adhered to a filter screen so as to bring inconvenience to the operation of a user, and the following scheme is provided: the compressed air filtering device comprises a filtering shell, a filter screen is fixedly installed in the filter shell, one side of the filter shell communicates with an air inlet pipe, the top of the filter shell communicates with an air outlet pipe, a motor is fixedly installed on one side of the filter shell, a lead screw is fixedly connected to an output shaft of the motor, the outer side of the lead screw is sleeved with a connecting plate in a threaded mode, and a brush plate is slidably installed on the top of the connecting plate. A brush is fixedly mounted at the top of the brush plate and movably abuts ag