SU1535890A2 - Apparatus for growing microorganisms - Google Patents

Abstract

This invention relates to equipment for the microbiological industry. The aim of the invention is to increase the service life of the drive by reducing the axial load on the shaft of the aerating and mixing device. The device for growing microorganisms contains a tank 1 with a cap 2, a cylinder 3 mounted along the axis of the tank 1, spacers arranged between it and the wall of the tank, forming sections 5, an aerating and mixing device 6 installed in each of them, with diffusers 7 having the bottoms 8. Concentric to each diffuser 7 are glasses 9, installed with a gap relative to the walls of sections 5 and having bottoms 10, also located with a gap relative to the bottom of section 5 under the aerating and mixing device 6. Between cups 9 and diffusers 7 are placed heat exchangers 11, communicated with the main lines supplying 12 and discharging 13 cooling water. Each section of the apparatus is equipped with a device for equalizing the hydrostatic pressure on an aerating and mixing device consisting of several pipes 14 arranged around the diffuser 7. Each pipe is rigidly fixed in the bottom of the diffuser and section and has longitudinal slots 15 in the area between the bottom of the cup and the diffuser. A cylindrical insert 16 is placed inside the pipe.

Description

The invention relates to equipment for the microbiological industry and is in addition to auth. V 569594.

The purpose of the invention is to increase the life of the drive by reducing the axial load on the shaft of the aerating and mixing device

Fig. 1 shows an apparatus for growing microorganisms; figure 2 - section aa in figure 1; on fig.Z - node I in figure 1.

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The apparatus for growing microorganisms contains a tank 1 with a cap 2, a cylinder 3 mounted along the axis of the tank 1, placed between it1, and a wall of the partition wall 4, forming sections 5, an aerating and mixing device 6 installed in each of them, above which are placed diffusers 7 having bottoms 8. Concentric to each diffuser 7 are glasses 9, installed with a gap relative to the walls of sections 5 and having bottoms 10, also located with a gap relative to the bottom of section 5 under aerating and mixing devices 6. Between the cups 9 and the diffusers 7 there are heat exchangers 11, which are connected to the mains of the supply 12 and outlet 13 of the cooling water.

Each section 5 of the apparatus is provided with a device for equalizing the hydrostatic pressure on the aerating and mixing device 6 consisting of several pipes 14 arranged around the diffuser 7. Each pipe is rigidly fixed in the bottom of the section 5 and the bottom 8 of the diffuser 7 and has longitudinal target holes 15 in the area between the bottom 10 of the cup 9 and the bottom of the section 5. Inside the pipe 14 there is a cylindrical insert 16, equal to it in height, plugged from the end 17 and having similar longitudinal slotted holes in the upper part 18. Cylindrical sun The tag is installed with the possibility of reciprocating movement along the pipe 14 and is associated with driving mechanisms (not shown).

The device for growing microorganisms also contains defoamers 19 mounted on the lid 2, their outlets are connected to the separator 20, and the latter is connected to the pipe 21. To supply air to the aerating and mixing device 6 serves the pipe 22, and the device 6 is driven by an electric motor 23 .

The microorganism growing apparatus works as follows.

In one of the sections 5, a nutrient medium is obtained and the dispersion is carried out, then the obtained seed material enters the remaining sections, in which the process of growing is carried out.

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microorganism treatment. The finished product is taken from the latter in the course of the process section and served for further processing.

The motor 23 rotates the aerating and mixing device 6 into which air is sucked in via conduit 22, mixed with the culture fluid, and aerates it.

The gas-liquid slurry stream is discharged from the device 6 into the gap between the bottoms 8 and 10 of the diffuser 7 and the cup 9, respectively, and then rises in the gap between the latter, washing the heat exchanger 11. Coolant water is supplied to it through the supply line 12, takes heat from the suspension, heats up and enters the highway 13 outlet. This maintains the desired culture temperature. At the exit of the gap between the cup 9 and the diffuser 7, the liquid flow is divided into two. One flow is lowered through the central space of the diffuser 7 and enters the upper part of the aerating and mixing device 6, and the other flow is lowered into the gaps between the cup 9 and the walls of the section 5 and flows through the gap between the bottom of the section 5 and the bottom 10 of the cup 9 to the bottom. the aerating and mixing device 6 is exhausted. The exhaust gas is drained in defoaming agents 19 and discharged through the separator 20 through the pipeline 21. If the cylindrical inserts 16 are displaced upward, then the longitudinal slit openings 15 of the pipes 14 and the longitudinal slit openings 18 of the cylindrical inserts are open 16. Since there are various flow rates of fluid in the flows coming from both sides to device 6, different flow resistances in the channels along which they move, a difference of hydrostatic Athres between the lower and the upper pipe-sections 14, due to which the flow of the liquid through longitudinal slot apertures 15, 18 and insert 16.

When this happens, the hydrostatic pressure is equalized on both sides of the device 6. The degree of leveling out is ensured by the amount of flow through holes 15 and 18, which depends on the amount of displacement of the cylindrical insert 16 relative to the pipe 14. When the insert 16 is in the lower position and abuts the bottom, The perforations 5 sections of the perforations are completely closed, and when the lower end of the insert 16 is at the level of the bottom 10 of the cup 9, the slit holes 15,18 are fully open and the flow area is maximal. The size of the flow section can be set in advance or varies during the fermentation process.

The proposed technical solution allows increasing the service life of the drive, since it reduces the axial load on the shaft of the mixing and aerating device.

Claims (1)

Invention Formula Microbial growth machine according to auth.St. At 569594, about t five 0 In order to increase the life of the drive by reducing the axial load on the shaft of the aerating and mixing device, each section of the apparatus is equipped with a device for equalizing the hydrostatic pressure on the aerating and mixing device consisting of several pipes located around the diffuser, each pipe rigidly fixed in the bottoms of the diffuser and the section and has longitudinal slit holes in the area between the bottom of the glass and the section, with a cylindrical insert inside, which has In the upper part there are similar longitudinal slotted holes, plugged from the end and installed with the possibility of reciprocating movement along the pipe, to regulate the flows of the circulating fluid. nineteen ; 1b 17 1B