Cascade structure of submerged pump for ship and stowage motor

Abstract

The invention discloses a cascade structure of a submerged pump for a ship and a stowage motor. The structure comprises a motor shaft, a flat key, a round nut, a pin, and further comprises an electric coupling and a pump coupling coaxially connected. Junction surfaces of the electric coupling and the pump coupling are connected through the pin to form the cascade structure. The electric coupling is a shaft sleeve member of which one end is provided with a flange. An inner hole of the electric coupling is matched with the extending motor shaft and is coaxially locked by the round nut. According to the structure provided by the invention, a cover plate connected by a screw is arranged in the electric coupling facing the outer end face, and the cover plate is axially blocked to form an axial sealing structure to the electric coupling. The pump coupling is a shaft piece with a flange at one end, and a concave seam allowance matched with a convex seam allowance of the electric coupling is arranged on the outer end face of the flange. In the application process of the structure provided by the invention, once faults occur, the pin is detached to separate the submerged pump from the mating motor, so that the structure can be maintained in a targeted manner. Even if damaged pieces are replaced, the cost is low. The structure provided by the invention is in particular suitable for the matched ships and warships.

Description

technical field [0001] The invention relates to a shaft connection structure, in particular to a joint connection structure used for a marine submersible pump and a loading motor. Background technique [0002] The engine room of a ship is a place where water, steam, oil and other pipelines and related equipment are centrally installed. The internal space is narrow and the environment is harsh. Especially once water and oil accumulate in the bilge at the bottom, it is very difficult to remove it with conventional tools. Submersible pumps are used to remove it. Relatively convenient. Commercial marine submersible pumps on the market follow the direct connection structure of ordinary submersible pumps, that is, the motor shaft is lengthened as the pump shaft. This kind of integrated direct connection has simple structure and good coaxiality, which fully meets the requirements of normal transmission. Even so, the integrated direct-connection structure is not effective in the a...

AI Technical Summary

Problems solved by technology

Even so, the integrated direct-connection structure is not effective in the application of marine submersible pumps. The reason is that no matter whether the pump is damaged or the motor is damaged, it must be disassembled as a whole, resulting in a large amount of maintenance work, high cost of replacement parts, and when

On the other hand, a ship is a mobile carrier, and there are practical difficulties such as inconvenient maintenance and insufficient accessories.

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