RU1789290C - Apparatus for removal of condensed fraction from centrifuge rotor with nozzles on peripheral portions - Google Patents

Abstract

Use: for separating liquid heterogeneous systems in various industries. SUMMARY OF THE INVENTION: the device comprises valves in the form of rods. The rods are mounted for radial movement to open and close the nozzles. The device is equipped with rods moving means made in the form of volumetric elements connected with them. Volumetric elements are made in the form of hard floats. The floats are made of material with a density higher than the density of the separated liquid, but lower than the density of the condensed fraction. 1 ill.

Description

Joint venture

WITH

The invention relates to the separation of heterogeneous liquid systems into fractions, and specifically to remove the condensed fraction from a centrifuge rotor having periphery outlet nozzles.

A device is known for removing thickened fraction from a centrifuge rotor with nozzles at the periphery, comprising valves in the form of rods mounted for radial movement to open and close the nozzles, and means for moving the rods made in the form of volumetric elastic elements connected with them.

A disadvantage of the device is that it does not provide the necessary stable density of the removed condensed fraction.

An object of the invention is to increase the stability of the removed condensed fraction by its density.

To achieve this goal in the proposed device for removing the condensed fraction from the centrifuge rotor with nozzles at the periphery containing valves in the form

rods mounted with the possibility of their radial movement to open and close the nozzles, and means of moving the rods made in the form of associated volumetric elements, the latter are made in the form of rigid floats made of a material with a density higher than the density of the liquid , but lower than the density of the condensed fraction.

The drawing shows a part of the rotor in cross section with the proposed device for removing the condensed fraction from the rotor of the centrifuge.

The device for removing the condensed fraction from the rotor of the centrifuge with nozzles at the periphery contains valves in the form of rods 1 mounted for radial movement to open and close the nozzles 2 of the rotor 3, and means for moving the rods, each of which is made in the form of a volumetric connected with the rod element, which is a hard float 4 made of a material with a density higher than the charge

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separated liquid, but lower than the density of the condensed fraction. Each rod is installed in the sleeve 5 of the guide element 6 located in separate sectors A, B, C, D and other rotors. The axis of each sleeve 5 of the guide element coincides with the axis of the nozzle 2.

The device operates as follows.

The condensed fraction separated by centrifugal force from the treated liquid and having a density higher than the density of the latter is collected in sectors A, B, C, D, etc. of the rotor 3 and fills them to levels in the form of cylindrical surfaces with radii Rt and R2 . In sector B, a centrifugal force directed to the periphery of the rotor 3 acts on the rigid float 4 and the hydrostatic buoyancy force of the surrounding fluid is directed towards the axis of the rotor, but less than the centrifugal force, because the density of the float 4 is greater than the density of the fluid being treated, and the outlet nozzle 2 remains closed.

In sector C, the condensed fraction reaches a radius of R2 as it accumulates, and since the density of the condensed fraction is greater than the density of the float 4, the buoyant force directed to the axis of the rotor 3 exceeds the centrifugal force acting on the float. The latter begins to emerge (moving radially towards the axis of the rotor 3) in the thickened fraction together with the rod 1, opening the nozzle 2. The thickened fraction is removed from the sector C through the nozzle 2 by the action of centrifugal force until its level drops to the level cylindrical surface with radius RI. In this case, the rod 1 with the float 4 moves in the sleeve 5 from the axis. rotation of the rotor 3 and closes the nozzle 2.

The invention improves the efficiency of the device due to the fact that the hydrostatic effect on the entire volume of a floating rigid element is much more efficient than compressive force,

Claims (2)

SUMMARY OF THE INVENTION A device for removing condensed matter from a centrifuge rotor with nozzles at the periphery, comprising valves in the form of rods mounted for radial movement to open and close the nozzles, and means for moving the rods made in the form of acting only on the surface of the flexible elastic element in the known device and the sensitivity of the proposed device is much higher. The density of the condensed fraction is always higher than the density of the starting liquid and the concentrate and that is why the condensed fraction is concentrated on the periphery of the centrifuge rotor with a surface radius of RI and Ra. The density of the float 4 of the transport means, which is higher than the density of the initial liquid, will cause this float to sink together with the rod 1 in the layer of the liquid being processed, i.e. under the influence of centrifugal force, it moves to the periphery of the centrifuge rotor. If the condensed fraction is still absent, the means of movement will move until the stop of the rod 1 into the wall of the rotor 3. Nozzle 2 at this will be closed. On the other hand, the density of the float should be less than the density of the thickened fraction concentrating on the periphery of the centrifuge rotor. With increasing the thickness of the thickened layer layer up to radius R2, the float, due to a density lower than the density of the thickened fraction, floats in the thickened fraction, lifting rod 1 with it, resulting in a hole the condensed fraction is opened and removed from the centrifuge rotor, its level decreases (moves to the periphery of the centrifuge rotor). Floating on a condensed surface fractions of the float 4 with the rod 1 is also lowered, blocking the nozzle hole 2. After which the process is repeated. Thus, a float with a density higher than the density of the condensed fraction will sink in the liquid being processed, floating on the surface of the condensed fraction, and adjust the position of the quantity of condensed fraction in the centrifuge rotor with its position. The proposed device design provides a stable density of the discharged condensed fraction. associated volumetric elements, characterized in that, in order to increase the stability of the removed condensed fraction by its density. Volumetric elements are made in the form of rigid floats made of a material with a density higher than the density of the separated liquid, but lower than the density of the condensed fractions.