When the excavator rotary screen underwater operation, it can not only be applied to the washing operation of mountain sand and river sand, as well as the sand field, mixing station, construction site and other working conditions with more mud content, so it is also known as the excavator screen sand bucket, excavator sand washing bucket, hook machine screen sand bucket, etc., when the hook machine drum screen bucket is used for sand screening operations, the diameter of the screen can be as small as 1 mm, the principle of washing and screening bucket: the sand is loaded into the hopper with a loader, and a large water pump is used to flush the trommel screen while entering the trommel screen, and the sand enters the sand washing machine with the water tumbling. The lumpy material is screened out by a trommel screen. Then using the principle of material gravity, the muddy water flows out with the overflow and flows into the sedimentation tank, and the sand is dug out after the water is controlled by the bucket elevator, so sometimes the excavator drum screen bucket is also called the excavator debris separator.
