RU2009114017A

RU2009114017A - CENTRIFUGAL PUMP WITH WET ELECTRIC MOTOR

Info

Publication number: RU2009114017A
Application number: RU2009114017/06A
Authority: RU
Inventors: Анатолий Филиппович Винокуров (RU); Анатолий Филиппович Винокуров; Юрий Апполонович Языков (RU); Юрий Апполонович Языков
Original assignee: Закрытое акционерное общество "ПОМПА" (RU); Закрытое акционерное общество "Помпа"
Priority date: 2009-04-15
Filing date: 2009-04-15
Publication date: 2010-10-20
Also published as: RU2405974C1

Abstract

1. Центробежный моноблочный насос с мокрым электродвигателем, включающий корпус с крышкой и рабочим колесом, закрепленным на валу ротора электродвигателя, и подшипники, установленные во внутренней и наружной крышках электродвигателя, отличающийся тем, что корпус и крышка насоса выполнены с кольцевыми камерами и дросселирующими отверстиями, а между крышкой насоса и внутренней крышкой электродвигателя размещена мембрана и торцевое уплотнение, при этом торцы подшипников скольжения и торцы ротора установлены между собой с зазорами, равными 1,5-2,5 мм, причем сопряженные поверхности рабочего колеса, корпуса и крышки насоса установлены с торцевым зазором, равным 0,2-0,3 мм. ! 2. Насос по п.1, отличающийся тем, что ступица колеса выполнена с отверстиями, суммарная площадь которых в 4 раза больше площади торцевого зазора между рабочим колесом, корпусом и крышкой насоса. ! 3. Насос по п.1, отличающийся тем, что в корпусе подшипников скольжения выполнены отверстия. 1. A centrifugal monoblock pump with a wet motor, including a housing with a cover and an impeller mounted on the shaft of the rotor of the electric motor, and bearings installed in the inner and outer covers of the electric motor, characterized in that the housing and the cover of the pump are made with annular chambers and throttling holes, and between the pump cover and the internal motor cover there is a membrane and a mechanical seal, while the ends of the sliding bearings and the ends of the rotor are interconnected with gaps equal to and 1.5-2.5 mm, the impeller, the pump housing and cover mating surface mounted with an end gap, equal to 0.2-0.3 mm. ! 2. The pump according to claim 1, characterized in that the wheel hub is made with holes, the total area of which is 4 times the area of the end gap between the impeller, housing and pump cover. ! 3. The pump according to claim 1, characterized in that the holes are made in the housing of the bearings.

Claims

1. A centrifugal monoblock pump with a wet motor, including a housing with a cover and an impeller mounted on the shaft of the rotor of the electric motor, and bearings installed in the inner and outer covers of the electric motor, characterized in that the housing and the cover of the pump are made with annular chambers and throttling holes, and between the pump cover and the internal motor cover there is a membrane and a mechanical seal, while the ends of the sliding bearings and the ends of the rotor are interconnected with gaps equal to and 1.5-2.5 mm, the impeller, the pump housing and cover mating surface mounted with an end gap, equal to 0.2-0.3 mm.

2. The pump according to claim 1, characterized in that the wheel hub is made with holes, the total area of which is 4 times the area of the end gap between the impeller, housing and pump cover.

3. The pump according to claim 1, characterized in that the holes are made in the housing of the bearings.