Boost pump

Abstract

The invention discloses a boost pump, which comprises a propeller and a transmission shaft. On the basis of the using direction of the boost pump, a guide plate is fixed inside the rear end of a pump shell; the guide plate mainly comprises a plurality of guide vanes; each guide vane consists of a straight section and a cambered surface section; the straight section is parallel to the axial direction of the transmission shaft; one end of the cambered surface section is connected with the straight section, and the other end of the cambered surface section is close to the propeller; the straight section and the cambered surface section are integrated; the number of the guide vanes is at least two; the plurality of guide vanes are arranged at equal intervals around a central shaft of the pump shell; one end of each guide vane far away from the central shaft of the pump shell is fixed on the inner surface of the pump shell; and the cambered surface sections of the plurality of guide vanes face towards the same direction as the rotation direction of the transmission shaft. The boost pump can linearly spray water, increases thrust and has the advantages of simple structure and easy implementation.

Description

technical field [0001] The invention relates to an underwater propulsion device, in particular to an underwater propulsion device capable of jetting out water flow in a straight line. Background technique [0002] Generally, existing underwater propellers spray water in a spiral shape, and the force generated by the spirally sprayed water flow can be divided into forward thrust and component force in the direction of rotation, so as to propel the hull or surfboard, etc. The effective force is the forward thrust, so the force generated by the spiral spray of the water flow cannot be fully converted into the forward propulsion power, which reduces the effective work. Contents of the invention [0003] In order to overcome the above-mentioned defects, the present invention provides a propulsion pump, which can spray water in a straight line and improve the thrust, and the structure of this example is simple and easy to implement. [0004] The technical scheme that the presen...

AI Technical Summary

Problems solved by technology

[0002] Generally, existing underwater propellers spray water in a spiral shape, and the force generated by the spirally sprayed water flow can be divided into forward thrust and component force in the direction of rotation, so as to propel the hull or surfboard, etc. The effective force is the forward thrust, so the force generated by the spiral spray of the water cannot be fully converted into the forward propulsion power, which reduces the effective work.

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