DREDGE Russian patent published in 2022 - IPC E02F3/88 E21C50/00 

FIELD: mining equipment.

SUBSTANCE: invention relates to mining equipment, namely to a device for the development of alluvial deposits and technogenic accumulations of mineral raw materials by dredging. The dredge includes a pontoon and a multi-bucket working body. A curtain is installed perpendicular to the axis of the pontoon along its entire width, and the length of the curtain to the surface of the ephel dumps must correspond to the condition: L=D-P-E-0.5, m, where L is the length of the curtain, m; D - depth of the dredging section, m; P - draft of the pontoon, m; E - power of ephel dumps in the place of the curtain, m. The curtain is made of polyvinyl chloride (PVC) material and is cut lengthwise into equal strips over the entire area.

EFFECT: reduction of mineral dilution, as well as reduction of wear of the pipeline and pump from the ingress of fine particles.

2 cl, 2 dwg