DRAGHEAD Russian patent published in 2005 - IPC

FIELD: hydromechanization equipment for construction as well as for hydromechanized production and laying of non-metallic building materials with the use of dredges namely floating earth-moving machines.

SUBSTANCE: draghead comprises ground pump with electric drive and with suction and pressure pipelines. The draghead also has ejection system. Ejection system includes water ejecting pump with suction and pressure pipelines adapted to supply water to flow mixing chamber arranged in suction pipeline of ground pump. Ejection system is provided with annular water manifold connected to pressure pipeline of water ejecting pump. The water manifold has hydraulic nozzles to supply water to conical flow mixing chamber. The flow mixing chamber is connected to suction pipeline of ground pump immersed in water under water surface layer.

EFFECT: increased depth of cavitation-free ground excavation without draghead productivity reduction, increased distance of ground hydrotransportation.

1 dwg