SU721479A1 - Device for gas distribution in liquid in apparatus for microorganism culturing - Google Patents

Description

one

The invention relates to the microbiological industry and is intended for aeration and mixing of culture media for growing microorganisms in laboratory and industrial fermenters.

The closest technical solution to the present invention is a device for distributing gases in a liquid to apparatus for growing microorganisms, containing a turbine mounted on a vertical shaft, including cone-shaped plates with nozzles for introducing liquid and facing large bases between them to form an annular a slit for discharging fluid f placed in the strips between the plates a distribution disk with radial vanes arranged to the plates and an aerator consisting of tsevyh collectors arranged around the turbine over each other with a clearance, and the guide vanes, mounted between the headers, the headers on the surfaces facing each other, there are openings for the passage of air. The annular slot of the turbine is located in the gap between the collectors, the radial blades of the turbine in the area of the fluid ejection are provided with directions for separating the fluid flow into separate jets 1.

A disadvantage of the known device is that it is designed to work with liquids having similar physicochemical properties.

When these properties change, the device must be subjected to a structural change related to the manufacture of new collectors and a change in the diameter of the air outlet holes and the airfoil guides5.

The purpose of the invention is to enable the distribution of gas in liquids with different physicochemical properties.

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This is achieved by the fact that, in the proposed device, the collectors are mounted for rotation in a horizontal plane and moving vertically in cylindrical 5 shells having flanges and interconnected by means of tightening elements, the guide vanes being fixed between the flanges, and the walls of the collectors having openings 0 for gas outlet, are removable.

Fig, 1 schematically shows the proposed device, a longitudinal section; FIG. 2 is a section A-A in FIG. 1; Fig. 3 shows embodiments of perforated collector walls.

A device for distributing gas in a liquid includes a turbine 1 and an aerator consisting of manifolds 2 and 3 located around the turbine in a ring one above the other with a gap and having holes on the walls 4 for air passage and guide vanes 5,

The turbine 1 is formed by cone-shaped plates 6, between which there is a disk 7 fixed on the hub 8, the turbine hub has a keyway 9 for mounting on the drive shaft (not shown in the drawings).

The collectors 2 and 3 are installed in shells 10 with flanges 11 and fixed by screws 12 after being rotated horizontally or moving vertically. The shells with flanges and vanes are interconnected by tensioning elements 13. The walls 4 of the collectors are made removable (some versions of the walls cm fig 3)

The device works as follows.

The flow of the culture fluid by the turbine 1 is directed to the annular gap of the aerator; the passage between the collectors 2 and 3, the liquid is actively saturated with gas coming from the holes of the removable perforated walls 4. The ability to move and install the collectors 2 and 3 relative to each other in different positions horizontally and vertically allows you to set the position at which for a particular liquid aeration will be the best.

When the outlet openings of the collector 2 are displaced by turning horizontally relative to the collector 3, the coalescence of gas bubbles is significantly reduced and they are evenly distributed in the liquid stream.

For low viscosity fluids, the intercollector distance can be increased, which also helps to improve the mass transfer of gas with liquid. The size of the gas outlet can be selected by replacing the walls 4 and the collectors 2 and 3,

Next, the gas-liquid flow is additionally turbulized, breaking into separate jets with guide vanes 5 located between the flanges 11, and enters the circulation circuit of the apparatus,

In the proposed device, the possibility of adjusting the distance between the collectors and turning them relative. adhering each other provides optimal conditions for the mass exchange of gas with a liquid, which can be selected for any liquids during operation.

The proposed device will significantly reduce the costs associated with the design development, manufacture and operation of its

in industry.

Claims (1)

Invention Formula Gas distribution device in the liquid to the microorganism growing apparatus containing a turbine mounted on a shaft and an aerator consisting of collectors arranged around the turbine one above the other with a gap and having openings for the passage of gas and guided vanes on the walls facing each other. Different that, in order to distribute gas in liquids with different physicochemical properties, the collectors are installed with the possibility of rotation in the horizontal plane and displacement vertically in cylindrical shells having flanges and interconnected by clamping elements, while the guide vanes are reinforced between the flanges, and the walls of the collectors, having openings, are made removable. Sources of information taken into account in the examination 1, USSR Copyright Certificate No. 2466843/13, C, 12 V 1/00, 22,03,1977 (prototype),