Grey fabric hair brush beating device of fabric coating pad dyeing equipment

The invention aims at providing a brushing flapping device that can clean impurities on the surface of grey fabric much better and cause conglobated impurities to fall down after flapping. The invention comprises a case body with a strip inlet and a strip outlet arranged on the wall of the case body, an auxiliary involutory brushing roller formed by two relatively rotating brushing rollers and arranged inside the case body, and a rotatable flapping roller that is parallel to the brushing rollers and arranged inside the case body; in addition, a flapping bar being parallel to an axis of the flapping roller is connected on an external circumference surface of the flapping roller, and the involutory brushing roller and the grey fabric between the strip inlet and outlet is cut mutually with the flapping bar on the flapping roller.