SU738649A1 - Apparatus for aerating liquid - Google Patents

Description

one

The invention relates to the field of saturation of liquids with gases and can be used in the chemical, medical and microbiological industries, for example, in yeast-growing apparatuses.

A device for airflow and fluid circulation is known, comprising a rotor mounted on a hollow shaft through which air is supplied. The rotor is made in the form of hollow blades fixed between solid and annular disks, communicating with the shaft and open in the radial direction 1.

The disadvantages of the known device are as follows:

there is no displacement chamber at the air outlet from the blades, as a result of which the degree of dispersion of air (gas) in the liquid medium is low; .

the presence of a solid disc. from the lower side of the rotor, when such rotors are installed in Rus, contributes to the occurrence of a flooding phenomenon when air is forced into them, i.e. upstream rotors

will appear in an air cushion at certain air flow rates.

The closest solution to the invention in its technical essence and the achieved result is a device for aerating a fluid, comprising a hollow shaft and a rotor mounted on it, made in the form of two truncated conical disks facing each other with large bases, between which are fixed hollow blades communicating with a cavity shaft. The rotor is equipped with a cylindrical screen mounted at the exit of the blades 2.

In this device, the mixing area is bounded by a screen that creates resistance to the outgoing fluid. Additional energy is expended on wrap around the screen with a gas-liquid mixture.

The circuit of the invention is the intensification of mass transfer for c / even increase in the contact surface of the phases.

The goal is achieved by the fact that a device containing a rotor mounted on a hollow shaft with hollow blades is equipped with baffles attached to the disks on both sides of the hollow blades forming intermixing chambers.

Partitions while installed at an angle to one another.

FIG. 1 shows a device for aeradic fluid, a longitudinal section in FIG. 2 - section A-A of FIG. one; in fig. 3 is a section BB of FIG. 2

A device for aerating a fluid contains a hollow shaft 1 on which rotors 2 are mounted many times over. Each rotor is made in the form of two truncated conical disks 3 facing each other with large bases, between which hollow blades 4 are fixed, communicating with the cavity of the shaft through holes 5 The blades are rectangular in cross-section, tapering towards the periphery and ending at the end of the disc, not returning to the edges of the discs 3. On both sides of the hollow floor: current 4, partitions 6 are fixed, forming between themselves chambers 7 cm. at one angle and to the other. The discs 3 at the ends have a screwdriver 8 for suction of the liquid. Lower rotors on the shaft have a larger diameter. Hollow ridges and partitions can be inclined to the horizontal plane of rotation. .

In order to evenly distribute the gas over the shaft and the blades, the rotors are mounted on the shaft with the possibility of rotation and thereby adjusting the resistance of the holes 5. The shaft is equipped with a manifold 9.:

The device is mounted on the rods 10

A device for aeration of the fluid works as follows.

When the rotors rotate, the liquid is sucked into the holes 8 and enters the mixing chamber 7, into which noCTyniT air is simultaneously through the hollow vanes 4. The fluid mixes with the air and is released into the container due to centrifugal forces.

The device can work as an ejection without forced air supply.

Thus, the presence of a mixing chamber makes it possible to mix the phases inside the device, thereby increasing the gas and liquid dispersion, which ultimately leads to the intensification of the mass transfer process.

Such rotors, mounted on a shaft in many layers, will avoid the phenomenon of choking when the mixing process has almost disappeared and, thereby, also intensifies the process of mass transfer.

Claims (2)

1. A device for aerating a fluid containing a hollow shaft and a rotor mounted on it, made in the form of two truncated conical disks that face each other large. grounds, between which are fixed hollow blades, communicating with a shaft cavity, characterized in that, in order to intensify the mass transfer by increasing the contact surface of the phases, it is provided with partitions fixed on the disks on both sides of the hollow blades and forming a mixing chamber between them 2. A device according to claim 1, characterized in that the partitions are set at an angle to one another. Sources of information taken into account in the examination 1. US patent 3485484, cl. 261-87, 12.23.69. 2.Patent of Switzerland 51163 (3, cl. B 01 F 5/12, 15.10.71 (prototype)