Half type shaft connecting structure and sliding bearing lining integrated vertical long shaft pump

Abstract

The invention relates to a half type shaft connecting structure and sliding bearing lining integrated vertical long shaft pump. An upper barrel, a lower barrel, an upper shaft, a lower shaft and a coupling lining are included. The coupling lining is arranged between the upper barrel and the lower barrel, and the upper shaft and the lower shaft are connected into a whole through the coupling lining. A lower barrel supporting rib plate and a lower barrel supporting base are included. A nonmetal lining and the lower barrel are connected into a whole through a nonmetal lining fastening assembly. The lower barrel supporting base is fixed to the lower barrel through the lower barrel supporting rib plate. The nonmetal lining is arranged in a nonmetal lining base in an interference fit manner. Thenonmetal lining base is arranged on the lower barrel supporting base through clearance fit. According to the half type shaft connecting structure and sliding bearing lining integrated vertical long shaft pump, the functions of set structure half type connection and the sliding bearing lining are achieved, the unbalance amount of a pump rotor can be reduced to the maximum degree, rigidity of the rotor is improved, the running life of the rotor is prolonged, the pump set vibration is reduced, the maintaining efficiency is improved, and stability, reliability and maintainability of the system are guaranteed.

Description

technical field [0001] The invention relates to a vertical long-shaft pump, in particular to a vertical long-shaft integrated with a half-shaft connection structure and a sliding bearing bush, which can minimize the unbalance of the pump rotor and improve the rotor rigidity and operating life. Pump. Background technique [0002] At present, in the multi-shaft structure used in long-shaft submerged pumps, the intermediate shaft is generally supported by bushings (or sliding bearings), and the ends are connected by couplings to form a shaft system. See figure 2 . Because the long-shaft pump shafting generally has a large difference in length and shaft diameter, the first critical speed of the pump set is low. For a single shaft of the intermediate shaft, there is generally no problem in bearing axial force. The radial force is a more critical service condition. In addition to the radial force generated by the hydraulic part of the pump, the coupling part of the multi-axis ...

AI Technical Summary

Problems solved by technology

If the medium is not clean or other reasons lead to changes in the shaft size of the lifting section of the coupling, it will greatly increase the difficulty of disassembly

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