The main structure of the mobile trommel wash plant is the trommel screen,which is composed of severalcircular screens,which are inclined to the ground and there is a sealed isolation cover on the outside. Through the variable speed and deceleration system,the screening drum is rotated at a certain speed,and the materials are separated from the top down through the screening drum.The fine materials are discharged from the front end of the screening drum,and the coarse materials are discharged from the lower end of the screening drum. The trommel screen can be equipped with a cleaning component to achieve uninterrupted cleaning of the screen body,so that the screening cylinder could keep clean during the working process,does not block,and does not affect the screening effect.