SU1428445A1 - Centrifugal mixer of continuous action - Google Patents

Abstract

The invention relates to the technique of mixing and dispersing bulk materials and can be used in light, chemical and other industrial fields. The aim of the invention is to extend the functionality of known devices by combining the stages of mixing and dispersion. The mixer is provided with a dispersing unit made in the form of two perforated discs mounted in the mixer rotor with the formation of a gap between their flat surfaces facing each other. The upper disk is mounted on the shaft of the plate with the possibility of vertical movement, which allows you to adjust the thickness of the gap and the degree of dispersion it determines, and the lower disk, rotor and discharge paddle are fixed on an additional drive shaft. The shafts are installed with the possibility of rotation in opposite directions with different speeds 1 cf f-crystals, 2 Il. i (L s

Description

The invention relates to the technique of mixing and dispersing loose materials and can be used in the light food, chemical and other industries.

The aim of the invention is to expand the functional capabilities of the known devices and to intensify preparatory processes for recyclable materials by combining mixing and dispersing operations

FIG. 1 shows a centrifugal continuous mixer with a longitudinal section in FIG. 2; a section A-A in FIG. 1.

The centrifugal mixer includes a conical body 1 with a lid 2, a loading 3 and a discharge. 4, an upper 5 and a LOWER 6 drive shafts. A plate 7 and a disk B are mounted on the upper shaft 5, and a disk 9, a rotor 10 and an unloading blade P. Ta Rell 7 and a cover 2 are made in the form of coaxially mounted other cones on the lower shaft 6. The plate 7 and the rotor 10 have holes 12J made in the form of isosceles triangles facing vertices to the vertices of the cones. Between the rotor 10 n the disk 8 there is a gap b, and between the disks 8 and 9 there is a gap a.

The disk 8 (Fig. 2) has perforations in the form of radially arranged holes 13, the diameter of which increases as they are removed from the center of the disk, the surface grooved along the periphery 14, the shoulder 15.

The disk 9 is also made with perforations in the form of radially arranged holes 16, while the diameters of the holes 16 are smaller than the diameters of the holes 13,

The continuous centrifugal mixer works in the following way,

The bulk material being processed is fed into the apparatus through the loading opening 3. Due to the presence of a cone plate. 7, the bulk material is turbulized, vigorously agitated and in an annular flow falls on the surface of the disk 8.

The rotational speed of disk B is relatively small; it is chosen such that the particles of the product scatter along its surface due to

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insignificant effect of centrifugal forces on the mass.

The flange 15 prevents the material from being thrown onto the inner side surface of the rotor 10 and gets into the holes 13. Pass the holes 13, the material turns out to be in the gap a between the disks 8 and 9, which rotate in opposite directions, and the speed of rotation of the disk 9 is chosen much more the speed of rotation of the disk 8,

The presence of perforations in the disks 8 and 9, their opposite rotation and different speeds make it possible to disperse the material in the gap and by cutting the material passing through the hole 13 in the disk 8 and the hole 16 in the disk 9, as well as due to the intensive complex movement of particles their repeated stagnation with each other, and prolonged grinding on the surface of the disks in the gap a.

The size of the gap a can be adjusted by moving the disk 8 along the drive shaft 5, which allows the degree of dispersion of the bulk materials to be varied.

A portion of the ground mass is sieved through the opening 16 of the disk 9 and falls to the bottom of the rotor 10, and a part is thrown onto the inner side wall of the rotor. Under the action of centrifugal forces, the crushed mass begins to rise in the rotor 10 upwards with increasing speed. In the gap b, the material is additionally dispersed by grinding it between the corrugated surface 14 of the disk 8 and the inner surface of the rotor 10, due to the opposite rotation of the rotor -10 and the disk 8.

Increasing or decreasing the gap a by moving the disk 8 accordingly increases or decreases the gap b. The presence of the gap b prevents the accidental ingress of individual large particles into the finished ground mixture.

The material additionally crushed in the gap b continues to accelerate in the direction of the edge of the rotor cone 10. Reaching the holes 12, particles are ejected from the rotor 10 and under the action of their own weight

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Claims (2)

Claim 1. A continuous centrifugal mixer comprising a housing. with a cover, a reverse conical rotor, an unloading vane and mounted on the vertical drive shaft 25 in the form of isosceles triangles facing the vertices of the cones, characterized in that, in order to expand functionality by combining mixing and dispersing operations, the mixer is equipped with an additional drive shaft mounted vertically in the lower part of the housing with the possibility of rotation in the direction opposite to the direction of rotation of the plate shaft, and two perforated disks, tanovlenii inside the rotor on the secondary shaft and the shaft of a plate to form a gap between their facing each other with flat surfaces, the rotor blade and unloading zakrep- 'Lena on the additional drive va <lu. 2. The mixer pop. 1, characterized in that the upper disk is made with a shoulder and a corrugated surface on the periphery and mounted on a conical plate, while the rag and rotor have holes made to the shaft of the plate with the possibility of movement along the shaft. figure 1