SU1510911A1 - Mixer for loose materials - Google Patents

Abstract

This invention relates to devices for mixing bulk materials. The mixer allows you to maintain the quality indicators of bulk materials while they are mixed. The mixer comprises a cylindrical drum 1 with loading 2 and discharge 3 chutes rotating around a longitudinal axis. Radial partitions 19 are installed in the cylindrical drum 1, which divide it into sector sections. In the partitions 19 along their entire length, transverse outlet openings 20 are made, connecting the sections to each other, and on the transverse edge of the openings 20 facing the charging chute 2 alternately in different directions with equal angles relative to the plane of the radial partitions 19, the visors 21 are fixed. 4 Il.

Description

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The invention relates to devices for mixing bulk materials and can be used in the food industry for blending teas.

The aim of the invention is to preserve the quality indicators of bulk materials while they are mixed and to intensify the process.

FIG. 1 shows a mixer, a longitudinal section; in fig. 2 is a section A-A in FIG. one; in fig. 3 is a radial partition, top view (view B in FIG. 2); in fig. 4 is a longitudinal section of the radial septum (section bb in FIG. 3).

The mixer consists of a cylindrical drum 1 with loading 2 and unloading 3 grooves. Gutters 2 and 3 are placed in the center of the side walls 4 and 5 of the cylindrical drum 1. The axis of rotation of cylinder 1 is inclined at an angle in the direction of movement of the bulk material and can vary from 1 to 8 ° (the mechanism for adjusting the angle of inclination of cylinder 1 relative to the horizontal in FIG. . 1 conventionally not shown). Bands 6 and 7 are fixed to cylinder 1, which are supported by four rollers 8 and 9, which are fixed with the possibility of rotation on support bearings 10 and 11. Cylinder 1 is driven by electric motor 12 through gear 13 and cylindrical gear train 14 and 15. The cylindrical drum 1 is made in the form of sector sections 16, 17 and 18, separated by radial partitions 19. On the partitions 19, transverse outlets 20 are placed along the entire length, connecting sections 16, 17 and 18 to each other. On the transverse edge on the same side of each outlet opening 20 facing the feed chute, the visors 21 are fixed in a different direction with the same angle of inclination a. The finished mixture is discharged from the drum 1 through the chute 3. The drive of the cylindrical drum 1 and the support bearings 10 and 11 are fixed to the frame 22.

Mixer for bulk materials works as follows.

From the loading tray, the pre-displaced components of the mixture continuously flow into the internal cavity of the rotating cylindrical drum 1 and are evenly distributed in its sector sections 16, 17 and 18. In each section the bulk material during longitudinal movement (due to the inclination of the cylinder 1 in the direction of movement material) is moving intensively. For example, in sections 16 and 18 (the position of which is shown in Fig. 2), a cascade mode of movement of the material occurs. At the same time, particles of the material located in the depth of the layer move along circular trajectories m until they reach the surface in the upper part of the slope formed by free

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the surface layer of the mixed material. After the particles reach the surface of the layer, they roll down the slope. The entire upper part of the slope is a layer of small thickness consisting of randomly moving downward particles. At the same time, from the sector section 17, continuously transverse thin layers through the outlet holes 20 material flows to the surface of particles randomly moving downward in sections 16 and 18. When feeding and meeting the flows by thin layers from different directions, there is an intense displacement of the bulk material . In addition, since the visors 21 located in the lower part of the radial partitions 19 (at the position of the pie sections shown in Fig. 2), are tilted at an angle against the movement of the main material flow, therefore from section 17 through the openings 20 from the top the spilled layers of transverse flows are directed back in relation to the main stream. In this case, the longitudinal mixing ratio also increases. A similar picture will be observed when section 16 is in the upper position, and sections 17 and 18 are in the lower position. Thus, when the cylinder 1 rotates, particles are intensively mixed in the sector sections 16, 17, 18 of the cylindrical drum due to transverse and longitudinal (from two sides) layer shifts. The mixed material from the discharge chute 3 is sent to the next process step.

The separation of the cylinder by radial partitions and the formation of sector sections significantly increases the utilization rate of the mixing working volume, in this case the mixing process takes place over the entire cross section of the cylinder. The communication of the sector sections by means of transverse outlets with peaks having the same angle of inclination a, ensures uniform displacement over the entire cross section of the cylindrical drum. At the same time, inclined visors increase the intensity of the process due to the longitudinal mixing of the material. Mixing takes place without mechanical action of the working bodies on the bulk material, which ensures the preservation of its quality indicators.

Claims (1)

Invention Formula Mixer for bulk materials, containing a rotating cylindrical drum with loading and unloading chutes, placed in the center of the side walls of the cylinder, the axis of rotation of which is inclined in the direction of movement of the material, characterized in that, in order to preserve the quality characteristics of bulk materials during their mixing and intensification of the process, the cylindrical drum is provided with radial partitions, dividing it into sector sections, with transverse outlets in the partitions along their entire length s port communicating section between themselves, and on the transverse edge of the openings facing the chute alternately in different directions with the same angles relative to a plane radial partitions fastened visors. .2 fie.Z FIG.