SU1650691A1 - Devices for foam separation - Google Patents

Abstract

The invention relates to the microbiological industry, to devices for foam separation, mainly to yeast flotation apparatus. The purpose of the invention is a more complete separation of gas from a liquid. The device comprises a cylindrical body 1 with a nozzle 2 for supplying foam, a nozzle 3 for venting gas and a nozzle 4 for evacuating the yeast suspension. The housing 1 contains a horizontal perforated disk 5 mounted on the drive shaft 6 and the blades 7 mounted on the disk 5. To their upper and lower edges there are annular disks 8 and 9, the lower of which 8 has an opening 10 for foam and the upper 9 - for separated gas. The nozzle 4 for removing the suspension is equipped with a valve or nozzle 13 for throttling the flow and controlling the flow rate of the liquid separated from the gas. Disks 8 and 9 exclude friction of the foam being split against the walls of the housing 2, the presence of the nozzle 13 or the valve ensures that the fluid inside the housing 1 is released and additional foamed sand. The device allows to obtain a yeast suspension with a minimum gas content, which eliminates the use of additional defoaming agents after the stage of their flotation and release. 3 il.

Description

The invention relates to the microbiological industry, to devices for separating foam, mainly to yeast flotators when they are separated by flotation.

The aim of the invention is a more complete separation of gas from liquid.

In FIG. 1 shows a device, a longitudinal section; in FIG. 2 is a section AA in FIG. 1; in FIG. 3 - node I in FIG. 2.

A device for separating foam, mainly to yeast flotation apparatuses, comprises a cylindrical body 1 with a nozzle 2 for supplying foam, nozzles for venting gas 3 and a yeast suspension 4. A horizontal perforated disk 5 is mounted on the drive shaft 6 and mounted on the drive shaft 6 and mounted on the disk 5 has vertical blades evenly spaced around the circumference of the blade 7. Ring disks 8 and 9 are attached to the upper and lower edges of the blades 7, the lower 8 of which has a central hole 10 for foam passage, and the upper 9 has a hole 11 for passage of the separated ha and, the wheels 8 and 9 serve to avoid friction shared foam of the housing wall 1. The branch pipe 4 for discharging the yeast slurry is provided with a valve 12 or a nozzle 13 for throttling the flow and regulate the flow of liquid separated from the gas.

The device operates as follows.

Foam from the apparatus for flotation of yeast enters through the pipe 2 into the housing 1, is captured by the vertical blades 7 and is destroyed in a centrifugal field. Gas passes through the perforation of the disk 5. is separated and exits through the nozzle 3. The fluid is discarded to the periphery of the housing 1 and forms a rotating ring layer, which is located between the ring disks 8 and 9. The thickness of this liquid layer increases until then. while the pressure of the centrifugal forces on the outer surface of the rotating fluid layer does not balance the pressure drop in the pipe 4. which is installed by the valve 12 or the nozzle 13.

Due to the presence of ring disks 8 and 9 in the device, the liquid layer does not experience friction against the inner walls of the housing 1, which provides a more optimal mode of gas evolution during the destruction of the foam. The completeness of this separation (gas and liquid) is provided by regulating the flow rate of the liquid leaving the device, so; ·. as a valve 12 or nozzle 13 prevents the rapid exit of fluid from the housing 1 and holds it for a time sufficient to completely release gas.

The use of the valve 12 or nozzle 13 in each case is selected depending on the properties of the foam, the type of yeast and the intensity of the foam from the flotator.

Thus, the proposed device allows you to more fully separate the foam into liquid and gaseous phases, to minimize the amount of gas in suspension at the outlet of the device, which makes it possible to exclude the use of additional chemical or mechanical defoaming when concentrating the yeast biomass after the stage of flotation.

Claims (1)

Claim A device for separating foam mainly to yeast flotation apparatuses, comprising a cylindrical body with a nozzle for supplying foam, a nozzle for discharging gas and a nozzle for discharging a suspension of yeast, a perforated disk mounted horizontally in the body, mounted on the drive shaft, with vertical vertically arranged thereon blades, characterized in that, in order to more fully separate the gas from the liquid, annular disks are attached to the upper and lower edges of the blades, the lower of which has a center noe hole for the passage of foam and the upper - opening for the passage of the separated gas, serving to eliminate friction shared foam on the housing wall, the outlet for removing the slurry of yeast is provided with a valve or nozzle for throttling the suspension flow and control the flow of liquid separated from the gas. Editor N. Rogulich Compiled by N. Osipov Tehred M. Morgenthal Corrector A. Osaulenko Order 1583 Circulation 373 Subscription ^z VNIIIPI of the State Committee for Inventions and Discoveries under the State Committee for Science and Technology of the USSR 113035, Moscow, Zh-35, Raushskaya nab., 4/5 Production and Publishing Plant Patent *, Uzhhorod, 101 Gagarin St.