A double-body double-suction canned pump

Abstract

A dual-pump body dual-suction type shield pump includes a pump inlet, a pump body, a dual-suction impeller, a bearing support, a thrust disc, a motor roller, a motor stator, a main shaft, a circulating water pipe, a pump outlet, an auxiliary bearing, a rotor shield casing, a stator shield casing and a dual-suction impeller suction inlet; an internal pump body is arranged in the pump body, the dual-suction impeller is arranged in the internal pump, and an outlet section of the internal pump body and an outlet section of the pump body are formed into a whole body; an auxiliary impeller is arranged at one side near the pump inlet of the outer wall of the internal pump body; a sealing section is arranged on the upper end of the dual-suction impeller; and the sealing section and the internal pump body form a three-dimensional space of a water pumping chamber. A large operation flow can be obtained on the premise of keeping high lift, and the operation range of the shield pump can be expanded; and meanwhile, automatic balance of axial water thrust can be achieved through the dual-pump body, the load of the thrust disc can be relieved, and the reliability of the shield pump can be improved.

Description

technical field [0001] The invention relates to a double pump body and double suction canned pump, in particular to a canned pump with coaxial pumps, no axial water thrust, large flow and high lift. The invention can be widely used in various liquid delivery systems in municipal, chemical, petrochemical, military and other fields. Background technique [0002] In order to meet the requirements of large flow and high lift in the water delivery system, double-suction centrifugal pumps are usually used as power equipment. However, ordinary double-suction centrifugal pumps usually use packing seals or mechanical seals, and there is a certain amount of liquid leakage, especially when the seal is worn, the leakage will double. However, when the centrifugal pump deviates from the optimal working condition, the noise and vibration are large, and the load on the bearing is very large, which will further affect the sealing performance, thus making the operation reliability of the pum...

AI Technical Summary

Problems solved by technology

Generally speaking, the current canned pump technology has made some progress in reducing noise and vibration, but the overall technology needs to be improved, especially in terms of the scope of application and operational reliability of the canned pump, it is difficult to meet the working conditions of the liquid delivery system. Frequently changing actual needs

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