SU1637882A1 - Hydrocyclone - Google Patents

Abstract

The invention relates to the microbiological industry, to hydrocyclones preferentially for the separation of microorganism suspensions. The purpose of the invention is to increase the completeness of the separation of the suspension by intensifying the cleaning of the pipe to remove biomass. The hydrocyclone comprises a housing 1 consisting of an upper cylindrical part 2 and a lower conical part 3, a tangential nozzle 4 for supplying slurry, a nozzle 6 for diverting the biomass of microorganisms, and an nozzle 5 for withdrawing the separated sludge. The housing 1 contains a device for additional mixing of the separated biomass, including a vertical rod 7 attached in the upper part by a hinge 8 to the lower edge of the nozzle 6. The rod 7 is mounted with the possibility of circular rotation around the vertical axis. The load 9 is attached to the lower part of the 7th grachch, which serves as a mixing body. The load 9 is mounted for movement along the rod 7 and fixing its position. The separated biomass accumulating in the lower part of the housing 1 is constantly mixed under the action of the movement of the load 9 and the rod 7, which occurs under the action of the downward flow of the medium, which leads to a decrease in the amount of solid phase in the clarified liquid. 1 Il C

Description

The invention relates to the microbiological industry, to devices for separating suspensions of microorganisms, namely to hydrocyclones.

The aim of the invention is to increase the completeness of the separation of the suspension by intensifying the cleaning of the nozzle for removal of biomass.

The drawing shows a hydrocyclone, a longitudinal section.

Hydrocyclone mainly for separating suspensions of microorganisms contains body 1. consisting of upper cylindrical part 2 and lower conical part 3, tangential nozzle 4

for supplying a suspension, a nozzle 5 for removal of separated sludge, placed in the lower part of the body, and a nozzle 6 for removing biomass, mounted vertically in the cylindrical part 2 of the body 1. Inside the conical part 3 of the body 1 there is a device for additional mixing of the separated biomass, including a vertical rod 7, hinged by the upper part by means of a hinge 8 to the lower edge of the nozzle 6 for the removal of the biomass of microorganisms. The rod is mounted with the possibility of circular rotation around the vertical axis. To the bottom of the rod

7, a load 9 is attached, which serves as a mixing tool, mounted to move along the rod 7 and fix its position.

Hydrocyclone works as follows.

The suspension of microorganisms to be separated is fed under pressure into the tangential nozzle 4, under the action of centrifugal forces, the cells of microorganisms and other solid inclusions move to the wall of the housing 1 and in the downstream move to the nozzle 5 for removal of the separated sludge, the separated biomass is discharged through the nozzle 6. Thus the separation of the suspension of microorganisms .k.

In the process of separating the suspension, the inlet portion of the nozzle 5 and the zone of the conical part 3 of the housing 1 located above it periodically begin to clog with the separated solid phase, which reduces the complete separation of the suspension, and the solid phase begins to be partially carried away by the flow of liquid. The movement of the medium inside the housing 1 drives the rod 7 with a load 9, since the rod is hinged and can move freely around the vertical axis of the housing 1. The rod 7 and the load 9 perform complex oscillatory and rotational movements, during which there is an additional mixing of the separated and accumulating in the lower part of the body 1 slurry mass. Thus, the lower part of the housing 1 and the nozzle S are constantly cleaned, which leads to stabilization of the flow regimes and contributes to an increase in the completeness of the separation. Depending on the nature of the suspension to be divided - the type of sludge microorganisms or depending on the initial concentration of the suspension - the cleaning mode can be changed by moving the load 9 along the rod 7 to fix it in a different position. This allows you to create

optimal mixing and agitating conditions for biomass and sludge at the hydrocyclone outlet, which also increases the complete separation of the suspension.

In the case of using a high density initial suspension, it is advisable to make the rod from a more flexible, but inextensible material, which makes it difficult to trajectory the movement of the load 9 and

prevent it from jamming.

Thus, this hydrocyclone allows to increase the efficiency of the separation of suspensions both by increasing the reliability of operation and due to

continuous mixing of the condensed biomass concentrate and the separated sludge sludge.

Claims (1)

Hydrocyclone claims separation of microorganism suspensions, comprising a housing consisting of an upper cylindrical and lower conical parts, a tangential nozzle for supplying a suspension, a DAE nozzle for separating sludge placed in the lower part of the case, and a nozzle for diverting the biomass of microorganisms installed vertically in the cylindrical part of the body I distinguish it, “and so that, in order to improve the complete separation of the suspension by intensifying the cleaning of the pipe to remove the sludge, a device is placed inside the conical part of the body l additional mixing of the separated sludge, including a vertical rod attached by the upper part hinged to the lower edge of the nozzle for removal of biomass and mounted rotatably around a vertical axis, and attached to the lower part of the rod is a weight that serves as a stirring tool and mounted for movement along the rod and fixing his position.