Novel centrifugal pump

Abstract

The invention discloses a novel centrifugal pump. A waterproof variable-frequency motor is directly connected with a main pump, and one to three intermediate pumps are arranged between a main pump suction port and a fence filter. As an improvement, each intermediate pump is divided into an upper pump shell and a lower pump shell; each upper pump shell is connected with an upper pump inner bracket through three to six supporting rib plates; an annular isolation seat is crosswise connected with the supporting rib plates between the upper pump inner bracket and each upper pump shell; the outer circle of an upper bearing is also fixedly arranged in an inner hole of the upper pump inner bracket; each lower pump shell is connected with a lower pump inner bracket through three to six water suction pipes; the outer circle of a lower bearing is also fixedly arranged in an inner hole of the lower pump inner bracket; a peripheral filter screen covers outer ports of the water suction pipes between the outer edge of a lower shell intermediate flange of each lower pump shell and the outer edge of a lower shell outer flange; an upper shell intermediate flange of each upper pump shell is fixedly connected with the lower shell intermediate flange in a matching way; an inner hole of the upper bearing and an inner hole of the lower bearing are fixed with a coupling shaft together; a square groove is arranged at the upper end of the coupling shaft; a square boss is arranged at the lower end of the coupling shaft; and an impeller is positioned between the upper pump inner bracket and the lower pump inner bracket and is fixedly arranged on the coupling shaft.

Description

technical field [0001] The invention belongs to a centrifugal pump in a fluid machine, in particular to a novel centrifugal pump which works under a liquid in a series structure and absorbs water in parallel. Background technique [0002] Each known specific centrifugal pump has its own calibration for its optimal lift and flow rate, and its flow rate cannot be temporarily changed in an emergency. Cases of casualties and property losses caused by urban flood disaster emergencies such as torrential rains in metropolitan interchange facilities have been reported frequently, and it is difficult to meet the emergency response problems of typhoon storms and other urban flood disaster emergencies and the needs of an increasingly rich and changeable living environment . Contents of the invention [0003] The purpose of this invention is to provide a new type of centrifugal pump, equipped with a waterproof frequency conversion motor, and 1 to 3 intermediate pumps can be added bet...

AI Technical Summary

Problems solved by technology

[0002] Every known specific centrifugal pump has its own calibration for its optimal head and flow rate, and its flow rate cannot be temporarily changed in an emergency

Cases of casualties and property losses caused by urban flood disaster emergencies such as torrential

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