How does the River Cutter Sand Dredger Ship for River Sand Dredging Work?

The river cutter sand dredger ship for river sand dredging is a dredging equipment that integrates cutting, suction and conveying functions. Its core feature is that it achieves continuous operation through the synergy of underwater mechanical cutting and fluid dynamic sand conveying. The equipment workflow includes three technical stages:

Underwater cutting system

The rotating cutter head of the river cutter sand dredger ship for river sand dredging is equipped with a curved tooth array, and the cutter arm is hydraulically driven to produce a composite motion trajectory. The cutting angle is automatically adjusted according to the riverbed topography, and the teeth shear and crush the sediment layer. The articulated bridge can adjust the depth in multiple axes to ensure that the cutter is in constant pressure contact with the riverbed.

Remote conveying control

The floating sand discharge pipe uses a flexible connection section to absorb the hull shaking, and the ultra-high molecular weight coating on the inner wall of the pipe reduces the flow resistance. The ship-borne power system drives the booster pump station to achieve the pressure delivery of sand and water mixture over a distance of several kilometers.

Dynamic positioning characteristics

The double pile positioning system is inserted into the riverbed alternately, and the hull is pushed forward step by step by the hydraulic cylinder. The side thrust propeller coordinates to adjust the bow direction of the ship to maintain the cutting and suction system operating perpendicular to the direction of the water flow.

How to achieve solid-liquid mixed transportation?

The centrifugal pump of river cutter sand dredger ship for river sand dredging generates a negative pressure gradient in the closed pipeline, and the crushed sand is sucked through the central throat of the reamer. The specially designed suction hood forms a directional flow field to prevent large-size gravel from entering the transportation system. The mud concentration is adjusted by the linkage between the reamer speed and the pump power to prevent pipeline sedimentation and blockage.