SU523929A1 - Microbial growth apparatus - Google Patents

Description

one

The invention relates to the field of microbiological and food industry, namely to apparatus for growing microorganisms.

A known apparatus for growing micro organisms, made in the form of a tank equipped with a defoamer, is located near a number of perforated plates, the odd ones of which, in the direction of air flow, form channels for the passage of fluid between them and the tank wall, an aerator and jlj bottom.

The purpose of the invention is to intensify the cultivation process and increase the productivity of the apparatus.

To achieve this goal, in the proposed apparatus, even in the direction of air movement, the plates have centrally located openings through which the vertical pipe passes to drain the defoamed liquid to form annular channels for the passage of the liquid between the pipe wall and the odd plates

Locked to the pipe wall. Perforated plates have the shape of a truncated cone of which the odd ones face the large base downwards, and the even ones - with the large base upwards.

FIG. 1 shows the proposed apparatus, a vertical section; in fig. 2 shows an embodiment of the apparatus; Fig, 3 - defoamer, vertical section; in fig. 4 is a section along A.-A in FIG. 3 (shaft and disk conditionally removed); in fig. 5 is a section along BB in FIG. 3 (shaft and disk conditionally removed); in fig. 6 - the plate is odd in the direction of gas movement; in fig. 7 - even in the direction of movement of the gas plate.

The device is a vertical tank 1 with a jacket, inside which there is a bubbler 2, an antifoam 3, a pipe 4 for supplying defoaming liquid to the bottom of the vessel, perforated plates 5 and 6 in the form of a truncated cone, fixed respectively on the pipe 4 and on the wall of the vessel 1 with the formation of channels between the plates 5 and the wall of the container 1 and between the pipe 4 and the plates 6, the gas movements being odd in the direction of the gas are set with a large base down, and even ones with a large base up.

Plates 5 and 6 are made with hollow shoulders 7 and 8, respectively located on the periphery of the plate and in the center. The collector 9 is designed to supply the nutrient medium.

The defoamer 3 is made in the form of a cyclone 10, inside which is installed the cup 1 of the rotor 12, the nozzle 13 for supplying the chemical defoaming agent and the electrode 14. According to another embodiment of the apparatus (FIG. 2) the defoamer 3 can be made in the form of a rotor 12 mounted above the hole the upper plate 5, which can be made non-perforated, while the diffuser 15 serves to collect the defoaming liquid. Holes 16 are made in the wall of the cyclone 10 to tangentially inject foam into the cavity between the cyclone 10 and the cup 11. Odd plates 5 have an opening tee 17 with variable diameter, uvelichivayuschims from the center to the periphery of an arithmetic progression with a difference equal 0,00001O, OOO1 diameter unit. The even plates 6 have holes of constant diameter, arranged in concentric circles, the distances between which increase from the center to the periphery in an arithmetic progression with a difference equal to O, OOOO1-0,0001 of the diameter of the apparatus. The finished product from the apparatus is discharged through fitting 18. The apparatus operates as follows. In tank 1, a nutrient medium is prepared, sterilized with a nutrient medium by supplying live steam into the container tank 1 and into the hollow shoulders 7 and 8. A clean culture of microorganisms is introduced into the tank through the collector 9, then air is passed through the bubbler 2. The air leaving the bubbler 2 rises upward, thereby forming an upward gas-liquid stream. As the gas-liquid flow rises, the enlargement of air bubbles occurs. The passage through the perforation of the plates 5 and 6, the bubbles are dispersed, the phase contact is renewed and the medium is mixed. In the upper part of the apparatus, the air is separated from the liquid and through the cyclone 3 is removed from the bone cell. The degassed fluid, as it is more dense, flows downwardly over the surfaces of the plates 5 and 6 ,. which also contributes to the mixing of the medium and its aeration. Fluid through the centrally and centrally located peripheral channels re-enters the lower part of tank 1. Burtices 7 and 8 create directional movement of both the liquid and the gas-liquid mixture.

Claims (1)

The varying perforation diameter on the odd plates 5 and the varying distance between the rows of holes on the even plates 6 ensure uniform air distribution over the horizontal section of the apparatus. The foam formed during the aeration process enters through the openings 16 into the space between the body 10 and the cup 11, where its partial destruction takes place. Then it enters the housing 10, in which the foam is mechanically quenched by the rotor 12, and if necessary, a chemical defoamer is fed through the nozzle 13. Degassed liquid flows into the lower part of the tank through pipe 4. Maintain the temperature at a predetermined level by introducing refrigerant into the jacket of the tank 1 and in the hollow shoulders 7 and 8. Formula of the invention The apparatus for growing microorganisms, made in the form of a tank, equipped with an antifoam, near a row of perforated plates, odd of which, in the direction of air movement, are installed with a channel for the passage of fluid between them and the wall of the tank, an aerator and a pipe for draining dehydrated fluid to the lower part of the tank, characterized in that, in order to intensify the cultivation process and increase productivity, even along the air flow the plates have centrally located openings through which the vertical tube passes to drain the defoaming liquid with the formation between the pipe wall and the plates of annular channels rohoda liquid, and thus the odd plates attached to the tube wall, perforated plates have the shape of a truncated cone, of which the odd bolschoy base facing downwards and base upwards chetnyebolschim. Sources of information taken into consideration in the examination: 1. Avt.sv. No. 380699, cl. From 12 to 1/10. X 14 13 18 Phage. one / " FIG. 2 Fig.Z LA Bb FIG. 6 / 7 . 7