Noil testing device based on carding machine and testing method thereof

The invention discloses a noil testing device based on a carding machine and a testing method thereof, and relates to the technical field of noil testing, the noil testing device comprises a shell, a fan and an adjusting assembly, the fan is installed on the inner wall of the shell, an infrared sensing head is arranged on the inner wall of the shell, and the adjusting assembly is installed on the inner wall of the shell. An infrared sensor is installed to detect whether the distance to a filter screen is appropriate or not, if the distance is appropriate, the device is started to enable a fan to rotate to collect noil, if the distance is not appropriate, an electromagnetic block is controlled by a control assembly to be started to generate magnetic force to drive a first clamping head to move, and a threaded sleeve moves to drive a first supporting rod to move; the first supporting rod moves to drive the first sleeve to move, the first sleeve moves to enable the first supporting rod to drive the first telesco