An underwater bionic impeller

Abstract

The invention discloses an underwater bionic impeller which comprises a roller (1) located under water. A plurality of bionic wheel blades are uniformly hinged on the outer wall of the roller (1) in the circumference direction; each bionic wheel blade comprises a plurality of plate-type aggregates (2) which are hinged in a head-to-tail mode; floating bodies (3) are connected on the front faces of the plate-type aggregates (2); and the reverse faces of the plate-type aggregates (2) are connected with dredging ploughs (5). According to the underwater bionic impeller, the bionic impeller imitates the process of finger opening and folding at the time of swimming of human; when located on the upstream face above the roller, the bionic wheel extends with the largest area to receive water flow impulsion, and when located on the downstream face below the roller, the bionic wheel is folded on the roller to reduce water flow resistance; the bionic wheel blades are in curled postures in the lower portion of the roller, the dredging ploughs on the back faces of the bionic wheel blades make contact with the sludge surface of the river bottom all the time to continuously stir up sludge of the river bottom, and the working efficiency is improved.

Description

technical field [0001] The invention relates to an underwater impeller, in particular to an underwater bionic impeller for removing silt and sand in a river channel, and belongs to the technical field of water conservancy machinery. Background technique [0002] Ordinary dredging water trucks are composed of vanes, hubs, bearings, brackets, dredging devices, driving devices and mobile chassis. The vanes, hubs and bearings are installed on the brackets, and the brackets are fixed on the chassis. The bearings of ordinary dredging waterwheels are located above the water surface. Since the river flow has a vertical flow velocity distribution characteristic of high flow velocity in the upper layer and lower flow velocity in the lower layer, the fast water flow in the upper layer exerts little torque on the water wheel blades, so it is installed at the tip of the water wheel blades. The arm of the dredging device at the place is long, and the dredging resistance moment generated i...

AI Technical Summary

Problems solved by technology

The bearings of ordinary dredging waterwheels are located above the water surface. Since the river flow has a vertical flow velocity distribution characteristic of high flow velocity in the upper layer and lower flow velocity in the lower layer, the fast water flow in the upper layer exerts little torque on the water wheel blades, so it is installed at the tip of the water wheel blades. The arm of the dredging device at the place is long, and the dredging resistance moment generated is large, resulting in low dredging efficiency of ordinary dredging water trucks

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