SU827116A1 - Settler distributing arrangement - Google Patents

Description

The invention relates to techniques for purifying water from mechanical impurities and can be used in the metallurgical and chemical industries.

Known distribution device of a sump containing a central pipe mounted along the axis of the housing with a supply pipe and radial nozzles with tangential outlet nozzles [1].

The known device does not provide high efficiency when used, since air is not removed from the feed pulp.

The aim of the invention is to increase the efficiency of use of the device by removing air from the distributed pulp.

This goal is achieved by the fact that the central pipe in the upper part is equipped with an annular degassing chamber with a pipe for air outlet, as well as connecting pipelines with sludge-giving pipes connecting the central pipe with radial pipes.

In FIG. 1 shows a general view of the device; in FIG. 2 - section A — A of FIG. 1.

The settling switchgear consists of a supply pipe 1, which, passing through the central pipe 2, having 2 radial pipes 3 with tangential branches 4, is mated to a cylindrical insert 5, the lower edge of which is brought under the water level. The cylindrical 5 insert 5, the end cap 6, the central pipe 2 and the water level in the sump form an annular degassing chamber. An annular degassing chamber communicates with the atmosphere through a fitting 7, 10 mounted in the end cap 6, and with radial nozzles 3 through connecting pipelines 8. Slurry feed nozzles 9 are connected to pipelines 8, the lower ends of which are lowered into the sediment sediment collector.

The device operates as follows.

Water containing mechanical impurities, together with reagents, enters through a 20 feed pipe 1 into a cylindrical insert 5, is lowered through a central pipe 2 to radial pipes 3 and is discharged through tangential branches 4 to a sump. The air contained in the incoming 2.5 water (sucked in through the oil seals of the feed pumps) is entrained by the flow into the radial nozzles 3, moving in their upper part, through pipelines 8 enters the annular degassing chamber. Due to the rarefaction created in the sludge 827116 of the supply pipes 9 during the upward movement of air through pipelines 8, as well as the hydrostatic pressure arising due to the difference in the densities of water (in the volume of the sump) and air (in pipelines 8), liquid sludge is sucked from the accumulator through sludge-feeding pipes 9. Getting into. annular degassing chamber, air-slurry mixture is separated. Air exits through the nozzle 7, mounted in the end cap 6, and the sludge is returned to the incoming water through the gap between the Central pipe 2 and the cylindrical insert 5, thereby increasing the efficiency of the flocculation process.

The proposed device differs from the known devices of a similar purpose constructive simple and higher efficiency.

Air removal through degassing

Editor L. Kurasova

Compiled by L. Sukhanova

Tehred A. Kamyshnikova

Claims (1)

Claim A settling switchgear comprising a central pipe installed along the housing axis with a supply pipe and radial nozzles with tangential discharge nozzles, characterized in that, in order to increase the efficiency of use by removing air from the distributed pulp, it is equipped with a degassing chamber installed in the upper part of the central pipe with a nozzle for air outlet, as well as connecting central pipes with radial nozzles connecting pipelines with sludge feed and pipes.