SU1097362A1 - Mixer - Google Patents

Description

The invention relates to devices for conducting heat and mass transfer processes, namely, for processes of mixing, homogenization, etc., and can be applied in chemical, food and other industries.

A planetary mix is known, comprising a housing, a planetary drive and sickle-shaped agitators l D.

The disadvantage of this device is low mixing intensity due to the fact that sickle-shaped agitators create tangential and radial flows and do not create axial flows, and this leads to the formation of stagnant zones.

A planetary mixer with helicoidal blades and a C 2 J root mixer is known.

The disadvantages of this device are low mixing intensity, the presence of stagnant zones that are not worked through directly by the mixers, as well as the root mixer.

The closest to the proposed technical essence and the achieved result is a mixer containing a planetary drive and helicoidal agitators with blades fixed on its shafts, made in the vvde screw winding 3 J.

The disadvantages of the known devices are the small intensity of the mixing process and the long mixing time of the starting components.

The purpose of the invention is to intensify the mixing process.

This goal is achieved by the fact that, in the mixer for viscous compositions, the agitators are made of elastic elements, the lower ends of which are hinged to the shafts and the upper ones are placed with the possibility of free vertical movement along the axis of the shafts.

FIG. 1. schematically shows a mixer, a general view; in fig. 2 shows section A-A in FIG. 1. (lower mount point of the agitator blade).

The mixer contains a vessel 1, a planetary gearbox 2 with stirrers fixed on its shafts 3, made in the form of elastic spiral tapes 4, a hinge 5, an intermediate sleeve 6 and a spring washer 7 that prevents the hinge 5 from unscrewing

The device works as follows.

When the planetary gearbox 2 rotates through the shafts 3, the torque is transmitted to the elastic spiral tapes A of the agitators, which move along the planetary trajectory m. When each tape 4 moves, it is due to the hinge 5 and the intermediate sleeve 6 having the possibility of axial movement along the shaft and turning around their common axis, cyclically pulsatingly moving in the directions indicated by the arrows in FIG. one.

Due to the proposed design, the blades of the agitators change their geometrical parameters when moving along planetary trajectories (helix pitch, pitch, angle of attack). The change in the geometric dimensions of the blades leads to the fact that as they move, the agitators create asymmetrical three-dimensional flows in a cyclic manner as a pulsator. Which continuously vary in time and throughout the volume of the device, forming significant interfaces between the components, which creates a significant degree of deformation of the medium in the mixer and significantly reduces the time to obtain a quality mixture.

The application of the invention allows intensive mixing of the starting components by creating cyclically pulsating flows.

Claims (1)

MIXER for viscous compositions containing a vessel, a planetary gearbox with spiral stirrers mounted on its shafts, characterized in that, in order to intensify the mixing process, the stirrers are made of elastic elements, the lower ends of which are pivotally mounted in the shafts, and the upper ends are placed with the possibility of free vertical displacement along the axis of the shafts. P 1 > 8 b I 4' M / J „„ 1097362 Fie. 1 1 1097362 2