SU623002A1 - Centrifugal pump - Google Patents

Description

I

The invention relates to a pumping station.

A centrifugal pump, a social wheeling wheel, an annular pressure chamber communicated with a lateral branch, having a diffuser and a tongue made from the end of the body, is known in the plane perpendicular to the axis of the wheel 1.

The disadvantage of the known pump is the occurrence of unbalanced radial hydraulic forces, and, as a consequence, the deterioration of vibro-acoustic characteristics.

Also known is a centrifugal pump containing an impeller mounted in a housing having an annular pressure cavity communicated with two lateral branches, one of which is made

transiting into a channel of constant cross section and shifted relative to the other by 1 VO, the tongue located in the plane perpendicular to the axis of the wheel, and the discharge port.

This pump achieves a balance of radial hydraulic forces Hi vibroacust improvement: 1 hectares,

The residual s of such a pump is the complex technical construction of its pump and, as a result of STOIXJ, the cost is high, since it is almost impossible to complete the pump casing with a single cast,

The aim of the invention is to simplify the manufacturing technology while maintaining the same pump qualities.

This goal is achieved by the fact that the taps are located on one end of the body and have a common wall, and the tongue in the discharge port is formed by the latter.

FIG. 1 shows a central, longitudinal section; in fig. 2 - section A & A of FIG. 1 "in FIG. 3 - view B of FIG. 2,

The pump contains an impeller 1, a housing 2 with an annular pressure cavity 3 communicated with a lateral oVk) ROM 4. At an angle of 180 to the beginning of the lateral from water 4, the development begins at the same end