Pump pushing device used for ship

Abstract

The invention discloses a pump pushing device used for a ship. The pump pushing device comprises a bottom board, a hull, a rectifier object and a steerage guide pipe. A sealing pad is arranged on thelower surface of the bottom board, a water suction opening is formed in the middle portion of the bottom board, a shell is arranged on the upper surface of the bottom board, a shaft casing pipe is arranged on one side of the shell, a rotary shaft is arranged in the shaft casing pipe, an impeller is arranged at one end of the rotary shaft, a shaft seal is arranged on the side, away from the shell,of the shaft casing pipe, a water inflow pipeline is arranged on the side, away from the shaft casing pipe, of the shell, the hull is arranged on the side, away from the shell, of the water inflow pipeline, the rectifier object is arranged on the side, away from the water inflow pipeline, of the hull, and a bearing seat is arranged in the rectifier object. The pump pushing device has the beneficial effects that the pump pushing device is installed in the hull, the external dimension of the ship is reduced, the ship draft depth is greatly reduced, the sailing region of the ship is enlarged, steering is flexible, the steering radius is small, and the flexibility and maneuverability of ship sailing are greatly improved.

Description

technical field [0001] The invention relates to the technical field of ship propellers, in particular to a pump propulsion device for ships. Background technique [0002] A ship propeller is a ship whose function is to provide power to the ship. A mechanism that propels a ship forward. It is an energy converter that converts natural force, manpower or mechanical energy into ship thrust. Propellers can be divided into active and reactive types according to their mode of action. Fibers, sails (see sailboats), etc. that are driven forward by manpower or wind are active, while oars, sculls, paddle wheels, water jets, propellers, etc. are reactive. Most modern transport ships use reactive propellers, and propellers are the most widely used. Ordinary transport ships have 1~2 propellers. For ships with high propulsion power, the number of propellers can be increased. Large fast passenger ships have two to four oars. The propeller generally has 3~4 blades, and the diameter de...

AI Technical Summary

Problems solved by technology

The speed of the propeller should not be too high. The speed of the ocean cargo ship is about 100 revolutions per minute, and the speed of the small speedboat is as high as 400~500 revolutions per minute, but the efficiency will be affected.

Most of the existing ship propulsion devices can only work effectively in deep water areas. After entering shallow water areas, the propeller will touch the bottom of the water, which greatly limits the navigation area of ​​the ship, and the large turning radius is not flexible enough, which greatly reduces the maneuverability of the ship. performance

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