RU106848U1 - PERIODIC ACTION MIXER - Google Patents

Abstract

The technical solution relates to batch devices for preparing mixtures of components of bulk dispersed materials, can be used in food, chemical and other industries. The centrifugal mixer contains: a vertical cylindrical body (1), an elliptical cover (2) and a bottom (4), a agitator (7) made in the form of two blades, a vertical shaft (6) with a rotor placed on it. A hollow thin-walled truncated cone (10) with bypass windows (11) is connected concentrically to the rotor base and is connected to the disk (8) from below by a smaller base. The rotor base is made in the form of a perforated disk (8), above the holes of which arcuate flaps (9) are located. The mixing process is intensified by arched flaps above the holes of the perforated rotor base, 2 silt.

Description

The technical solution relates to batch devices for preparing mixtures of components of bulk dispersed materials, can be used in food, chemical and other industries.

Known centrifugal mixer [1], containing a vertical cylindrical body, an elliptical cover and a bottom, a tedder made in the form of two blades, a vertical shaft with a rotor in the form of a disk, on which a hollow thin-walled truncated truncated cone with bypass windows is concentrically mounted. On the inner surface of the cone, spiraling blades are installed that have a circular arc profile, along the entire length of which bypass holes are made in the lower part, and cutouts having a rectangular shape are made in the upper part.

The technical drawback of this centrifugal mixer is the presence of stagnant zones in the central part of the rotor and the insufficient circulation intensity of the flows of mixed materials, which negatively affects the efficiency of the mixing process.

The closest in technical essence and the achieved effect to the proposed utility model is a centrifugal mixer [2], containing a vertical cylindrical body, a cover on which are attached nozzles for supplying raw materials, an unloading nozzle, a vertical shaft with a rotor installed in it in the form of a disk, which concentrically installed hollow thin-walled truncated cones, in which the height and inclination of the generatrix to the base increase from the central part to the periphery, and on the surface of the middle and of the outer cones tangential holes are made, obtained by scanning two planes: the inner one - directed opposite to the rotation of the rotor, and the outer one - directed towards the rotation of the rotor. The technical drawback of the centrifugal mixer is the clogging and “blocking” of the tangential holes on the rotor surface with the materials being mixed with the material, as a result of which the circulation of the mixture components in the apparatus is disturbed and the quality of mixing is deteriorated.

The technical task is to increase the intensity and efficiency of the processes of mixing bulk particulate materials and, as a result, improve the quality of the mixture. Achieving this task is ensured by the fact that the base of the rotor is perforated, and above the holes there are arcuate flaps.

Figure 1 shows in section a General view of the mixer of periodic action. Figure 2 shows the rotor with the base in the form of a perforated disk (top view).

The batch mixer (Fig. 1) consists of the following elements: a vertical cylindrical body 1, an elliptical cover 2 with a loading nozzle 3, an elliptical bottom 4 with a bearing assembly 5, in which a vertical shaft 6 is fixed. A agitator 7 is installed in the lower part of the shaft 6, made in the form of two blades. A rotor is mounted on the shaft 6, the base of which is made in the form of a perforated disk 8, over the openings of which arcuate flaps are located 9. On the base of the rotor, a hollow thin-walled truncated truncated cone 10 with bypass windows 11 is connected, connected to the disk from below by a smaller base. An unloading pipe 12 is installed in the elliptical bottom.

The mixer is as follows. Bulk materials are fed through the pipe 3 to the base of the rotating rotor, in the form of a disk 8. Under the action of centrifugal force, the bulk material uniformly "spreads" along the base. Next, part of the bulk flow is buried in the cavity under the arcuate flaps 9 and passes through the holes of the perforated disk 8. Most of the material passes to the inner surface of the hollow truncated cone 10, where it is also divided into two streams. One part of the granular mass through the bypass windows 11 with a leading stream passes from the inner surface of the hollow truncated cone 10 into the space between the rotor and the mixer body, where it meets the second part of the material flow discharged from the upper edge of the rotor. In this case, an intensive redistribution and mixing of the components occurs, which then fall on the elliptical bottom 4, where they are layered in layers on the part of the granular stream passing through the holes of the perforated disk 8 of the rotor.

The refinement of the mixture is carried out due to the circulation of the components of the granular mixture using the agitator 7, during rotation of which, under the action of centrifugal forces, the material rises from the elliptical bottom 4 and is thrown back to the base of the rotor. At the end of the mixing process, the finished mixture from the elliptical bottom 4 is removed from the apparatus through the discharge pipe 12.

The installation of arched flaps over the holes of the perforated rotor disk eliminates their clogging and “blocking” the material, ensures the stability of the movement of material flows through the holes on the bottom of the mixer. Due to the movement of the leading flows through the holes in the base of the rotor and the bypass windows on the conical rotor, the intensity and efficiency of the mixture formation process increases and, as a result, the quality of mixing is improved.

Information sources:

1. Patent 2311951 Russian Federation, IPC B01F 7/26, B28C 5/16. Centrifugal mixer - dispersant / Ivanets V.N., Bakin I.A., Chechko S.G., Volkov A.S., Manyanov V.I .; Applicant and patent holder GOU VPO KemTIPP. - No. 2006105599/15; declared 02.22.2006; publ. 12/10/2007, Bull. Number 34. - 5 sec.

2. Patent 2263533 Russian Federation, IPC ⁷ N B01F 7/26. Centrifugal mixer / Ivanets V.N., Bakin I.A., Volkov A.S., Snitsaruk M.S .; applicant and patent holder GOU VPO KemTIPP. - No. 2004132032/15 (034756); declared November 2, 2004; publ. November 10, 2005, Bull. No. 31. - 4 p.

Claims (1)

A batch mixer comprising a vertical cylindrical body, an elliptical cover and a bottom, an agitator, a vertical shaft with a rotor in the form of a disk mounted on it, on which a hollow thin-walled truncated truncated cone with bypass windows is concentrically installed, characterized in that the rotor base is made in the form of a perforated disk , over the openings of which arcuate flaps are located.