Rust-proof sealing structure of add-in motor pump set rotating shaft junction

Abstract

The invention relates to a rust-proof sealing structure of an add-in motor pump set rotating shaft junction. The rust-proof sealing structure of an add-in motor pump set rotating shaft junction includes a motor, an oil pump, a motor rotating shaft, and an oil pump rotating shaft, wherein an inner hole is formed in the motor rotating shaft; the oil pump rotating shaft is inserted in the inner hole of the motor rotating shaft, and is fastened through a locking screw; a rotating shaft connecting cavity is formed between the oil pump rotating shaft and the motor rotating shaft; V-shaped seal rings are arranged on the oil pump rotating shaft, and are annular structures; the cross section of each V-shaped seal ring is V-shaped; the V-shaped seal rings and the oil pump rotating shaft are in sealed connection and in interference fit; contact sealing is formed between the lips of the V-shaped seal rings and the front end surface of the motor rotating shaft; enclosing and sealing are implemented between the front end surface of the motor rotating shaft and the oil pump rotating shaft through the V-shaped seal rings; and the rotating shaft connecting cavity becomes a sealed cavity through the V-shaped seal rings. Compared with the prior art, the rust-proof sealing structure of an add-in motor pump set rotating shaft junction solves the rusting problem of the rotating shaft junction, thus prolonging the operating life of the motor pump set, stabilizing the work performance of the motor pump set, and guaranteeing normal operation of a hydraulic system.

Description

[0001] [technical field] [0002] The invention relates to the technical field of an interpolation motor and a pump combination structure, in particular to an anti-rust sealing structure at the joint of a shaft of an interpolation motor pump set. [0003] [Background technique] [0004] As the provider of power oil source for the hydraulic system, the motor pump set is distributed in all kinds of hydraulic mechanical equipment; and the interpolated motor pump set has been widely used because of its advantages of convenient installation, compact structure and low cost. , it can be seen that the operation quality of the motor pump unit directly determines the working performance of the hydraulic system. With the development of the hydraulic industry, in order to meet the continuous innovation progress of the mechanical equipment market, the motor pump unit is also making continuous improvements to meet the needs of the market. [0005] At present, the shaft connection structure ...

AI Technical Summary

Problems solved by technology

[0006] (1) The bonding surface 2 of the combination of the oil pump and the motor is not strictly sealed, and moisture and oxygen in the environment will penetrate into the chamber 3 connected to the rotating shaft through the bonding surface 2;

[0007] (2) The waterproof level of the motor is mostly IP54, which is not completely sealed, and the radial chip removal hole 1 of the motor shaft communicates with the interior of the motor stator and rotor, so the moisture and oxygen in the environment will also seep into the chamber connected to the shaft 3 middle;

[0008] (3) The matching gap between the oil pump shaft and the inner hole of the motor shaft is very small. With the continuous operation of the motor pump unit, the temperature at the joint of the shaft will rise, coupled with the centrifugal force generated when the motor is running, the grease will become thinner and flow out. Reduce the lubricating grease on the wall surface of the joint of the rotating shaft, lose the anti-rust function, and pollute the environment at the same time

[0009] Therefore, based on the interaction of the above reasons, when the motor pump unit runs for a period of time, the joints of the shaft will be rusted.

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