SU1551831A1 - Centrifugal pump scroll - Google Patents

Abstract

The invention allows to increase the efficiency of the pump. The tap contains a closed annular casing 1 with a pressure nozzle 2 and a side discharge chamber 3 connected to the nozzle 2, which is additionally communicated with the cavity of the casing 1 through the window 4, the contour of which is formed by lines 5 and 6 of the intersection of the internal surfaces 7 and 8 of the casing and nozzle with plane 9, aligned with the inlet section of the discharge chamber. When the pump is operating, the flow enters the side chamber 3 through the cross section and then into the discharge port 2. In this case, part of the flow from the cavity of the casing 1 enters the diffuser, increasing the efficiency of the pump. 3 il.

Description

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Claims (1)

Claim A centrifugal pump outlet, comprising a closed annular casing with a pressure pipe and a side discharge chamber in communication with the pipe. com, characterized in that, in order to increase the efficiency, the pressure pipe is additionally communicated with the cavity of the casing through a window whose contour is formed by the lines of intersection of the inner surfaces of the casing and the pressure pipe with a plane aligned with the inlet section of the outlet chamber.