Product Details

Product Introduction

The so-called auxiliary impeller hydrodynamic seal refers to the installation of an open impeller in the opposite direction and coaxially near the rear of the pump impeller rear baffle.

When the pump is working, the auxiliary impeller rotates with the main shaft of the pump, and the liquid in the auxiliary impeller will also rotate together. The rotating liquid will generate greater centrifugal force, which can withstand the liquid flowing to the mechanical seal and reduce the mechanical seal. pressure.

At the same time, it prevents the solid particles in the medium from entering the friction pair of the mechanical seal, reduces the wear of the mechanical seal grinding block, and extends its service life.

In addition to the compression and sealing functions of the auxiliary impeller, it can also reduce the effect of lower forces. In the submersible sewage pump, the axial force is mainly composed of the differential pressure of the liquid acting on the impeller and the gravity of the entire rotating part. The direction of the acting force is the same, and the resultant force is applied by adding two forces.

Product Parameter (specification)

Product application

Suitable for dirty water that does not chemically corrode the pump body.

Due to their reliability and the fact that they are easy to use, they are suitable for cleaning sewage, discharging domestic sewage and emptying collectors, the maximum suspended solids content in these collectors does not exceed φ8mm.

Motor and operating conditions

Engine

※Two-pole induction motor (N = 2850 r.p.m)

※Insulation class B

※Protection grade IP68

※Continuous service S1

※Heat shield

※If necessary, single-phase 220V / 50Hz, 60Hz can be provided

Operating Conditions

※Maximum immersion depth 3m

※Liquid temperature is as high as 35℃

※The maximum ambient temperature is 40℃

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