Marine thruster with flow restraining rings

Abstract

The invention relates to a marine thruster, in particular to a marine thruster with a flow restraining ring, which is a novel marine thruster, a flow restraining rings and a thrusting vanes of which are connected together. The marine thruster achieves the effects of restraining and guiding flows and improving the thrusting efficiency and also prevents the harms of the friction or collision of the thrusting vanes and a fixed flow guiding shield.

Description

[0001] Field [0002] The invention relates to a marine propeller, in particular to a marine propeller with a choke ring. technical background [0003] Existing propellers generally use multi-bladed impeller propellers, because this kind of propeller will diverge the water flow being pushed along the normal direction of the propeller shaft when it rotates, greatly reducing the reaction force and making the propulsion efficiency lower; Although the efficiency of the propeller mechanism equipped with a fixed shroud is improved, the blades and the fixed shroud will be rubbed or collided due to the swing when the impeller rotates, causing damage. SUMMARY OF THE INVENTION [0004] In order to overcome the above-mentioned defects, the present invention proposes a new type of marine propeller that connects the beam coil and the propulsion blades together, which achieves the effect of beam flow, flow diversion, and improved propulsion efficiency, and avoids the need for propulsion b...

AI Technical Summary

Problems solved by technology

[0003] Existing propellers generally use multi-bladed impeller propellers, because this kind of propeller will diverge the water flow being pushed along the normal direction of the propeller shaft when it rotates, greatly reducing the reaction force and making the propulsion efficiency lower; Although the efficiency of the propeller mechanism with a fixed shroud is improved, the blades will rub or collide with the fixed shroud due to the swing of the impeller, causing damage

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