SU1673187A1 - Mixer - Google Patents

Abstract

The invention relates to mixers and improves the efficiency of the device. The mixer contains two concentrically arranged cylindrical elements — body 1 and rotor 8 with inclined channels on side surfaces facing one another, in which transverse radial vanes 11 are located. In this case, the channels on one of the elements are made circular, and on the other screw. 1 hp f-ly, 4 ill.

Description

The invention relates to mechanical engineering, in particular to devices for mixing viscous liquids, and can find application in both the chemical and metallurgical industries.

The purpose of the invention is to increase work efficiency.

FIG. 1 shows schematically a mixer, a longitudinal section; in fig. 2 shows section A-A in FIG. one; in fig. 3 shows an embodiment of the mixer; in fig. 4 shows a section BB in FIG. 3

The mixer consists of a housing 1 in the form of a cylindrical element with an inlet window 2, an exit window 3 located in covers 4 and 5. The case 1 is made with inclined annular channels 6 (Fig. 1 and Fig. 2) or screw channels 7 (Fig. 3 and Fig. 4). Annular inclined channels are located sequentially on the inner side surface of the housing. Inside the housing 1 there is another cylindrical element in the form of a rotor 8 with screw channels 9 (Fig. 1 and Fig. 2) or inclined annular channels 10 (Fig. 3 and Fig. 4) and transverse radial blades 11 of triangular cross section located on the side canal walls. The angle of inclination of the annular inclined channels is close to the angle of friction and is equal to the angle of inclination of the screw channels 9 of the rotor, but is directed in the direction opposite to the direction. The opposite inclination of the channels ensures a decrease in the hydraulic resistance.

The execution of screw channels on one of the cylindrical elements, and additional mixing elements in the form of radial blades, increases efficiency (determined by effective efficiency) on the one hand by increasing the mixing efficiency by improving the organization of multiple meridional movement of the mixed fluids along the channels by means of mobile radial blades, on the other hand, due to a decrease in hydraulic losses due to a decrease in flow losses, which are essential in self Reynolds number, especially at low Reynolds numbers, and applied to viscous liquids emulsions and suspensions is among the propelling defining.

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Screw channels provide smooth movement of the emulsion from one turn to another and thereby reduce the flow loss losses that would cause the emulsion to separate. Screw channels provide an increase in the extent of the highest energy layers of the liquid and thus provide a more uniform flow of the liquid and more uniform mixing in the channels.

The implementation of the screw channels reduces the hydraulic losses due to the smoothness of the transitions and reduces the radial lattice of the blades of the profile losses determined with small Reynolds along

formula

In our case, A decreases with an unchanged Reynolds number.

The mixer works as follows.

When the cylindrical element in the form of a rotor 8 rotates, the liquid from the inlet window 2 enters the screw 9 or annular inclined channel 10 and the radial blades 11 is injected into the annular inclined channels 6 or screw channels 7, making a spiral motion around the cylindrical element in the form of a rotor 8 and vortex movement in the rotor and housing channels. In this case, the liquid is stirred and exits the mixer through the exit port 3. The mixer works as a vortex.

Multiple squeezing machine, providing a multiple increase in liquid head and multiple mixing.

The walls between the inclined annular channels form a spiral flow. The presence of channels and blades on the rotor is decisive, since when the radial lattice of the blades interacts with the liquid, the kinetic energy is transferred to the liquid, which is converted into potential energy in the working channels of the fixed elements.

Claims (2)

1. A mixer containing two concentrically arranged cylindrical elements mounted rotatably relative to each other, with inclined channels facing each other. other side surfaces, and on one cylindrical element the channels are made annular and in them are additional mixing elements, characterized in that increasing the efficiency of work, the channels on the other cylindrical element are screw-shaped, and the additional mixing elements are made in the form of radial blades. 2. Mixer pop. 1, characterized in that the screw channels are inclined in the direction opposite to the inclination of the annular channels. // FIG. 2 NEEFig J //