Filtering assembly, filtering system and filtering method

The invention relates to the field of pharmaceutical engineering, in particular to a filtering assembly, a filtering system and a filtering method. More than two fixing positions matched with the needle head filter are arranged on the edge of a turntable in the filtering assembly, and a through hole is formed in the middle of the turntable; a first supporting piece is arranged in the through hole, a second supporting piece is transversely and fixedly connected to the upper end of the first supporting piece, a first lifting mechanism for driving the liquid outlet end of the conveying pipe to do linear motion is fixedly connected to the second supporting piece, and the liquid outlet end of the conveying pipe corresponds to the needle head filter on the fixing position in position; the filtering system comprises the filtering assembly and further comprises an industrial mechanical arm which is used for installing and removing the needle head filter from the fixed position and can replace the actuator. The invent