kayak

Abstract

The utility model discloses a karting boat relates to karting boat technical field. The karting boat includes the hull and the propeller, and the propeller includes the casing, the motor, the connecting rod, the impeller, the first flow guide and the second flow guide, and the motor drives the rotation of the impeller, and the water flow is inhaled from the casing side wall water inlet, and the water flow is formed after the acceleration of the impeller and is rotated jet. Rotating water flow first hits the first flow guide piece, and the first flow guide piece of radial distribution divides the water flow into multiple sub flow channels, and forces the water flow to discharge along the axial direction. Subsequently, the water flow enters the second flow guide area, and the taper structure makes the flow passage cross section area gradually reduce, and the water flow speed improves, and finally the water flow is sprayed from the water outlet in the approximate straight line form. Through the first flow guide, the preliminary rectification is realized, and the second flow guide carries out secondary despinning to the central vortex, and the synergistic effect is formed, and the second flow guide piece produces the reverse moment, converts the rotation energy into the additional thrust, and can improve the power of the propeller.

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