Working Principle
Manganese steel plates are chains (hinge pin) together. Circular and semi-circular extracting hoppers are fired on the chained plate for cycling dredging and digging. The digging depth can be regulated control by pulley.
The extracting depth is 3-30 meters, the extracted materials could be sand, stone and mud, and the diameters are 1-3 cm, 2-4 cm and 4-6 cm respectively. Then they can be transported to different locations by conveyor belt.
Gold vessels, dredger vessels, dry land sand washing machine and iron dredging ship have the same working principle.
Various models can be fitted with the second washing device in order to get the stone more purified
