RU2799283C1 - Bulk materials mixer - Google Patents

Abstract

FIELD: mechanical engineering.

SUBSTANCE: invention is related to mixers. Bulk materials mixer contains dispensers, a base on which two mixing units are installed - upper and lower. The upper mixing unit is a set of plates, the distances between which increase from the central plates to the peripheral ones, and the lower mixing unit is made in form of a set of corners, the distances between which are the same. Symmetrically located flat inclined guides are placed on the sides of the mixing units, and a belt conveyor is placed under the lower mixing unit. The conveyor belt has rectangular cutouts with larger sides positioned across the belt. The unloading device is placed between the upper and lower sections of the belt. EFFECT: improved quality of mixing materials.

1 cl, 1 dwg

Description

The present invention is intended for use in the chemical industry, the agro-industrial complex, the production of building materials and other industries.

Known mixer of bulk materials [RF Patent No. 2256493, IPC B01F 11/00, publ. 07/20/2005, BI No. 20]. SUBSTANCE: mixer of bulk materials contains a housing, a cylindrical working chamber located inside its upper part, connected to the product loading and unloading devices. A vertical shaft is installed inside the housing, to which working bodies are connected, having elastic elements on the surface, made in the form of brushes, in contact with the bottom of the working chamber, of a wave-like shape. Under the working chamber, inclined trays are located one above the other, which can be rotated around an axis and equipped with damping devices.

The disadvantages of this unit include the low quality of mixing.

Closest to the proposed invention is a mixer of bulk materials [RF Patent No. 2692717, IPC B01F 3/18, publ. 06/26/2019, BI No. 18], containing dispensers, a base on which a mixing chamber is installed, consisting of a housing and two mixing units located in it, upper and lower, each mixing unit includes a mixing device and a drive mounted on a cross member, the axis of the mixing device of the lower mixing unit is located at right angles to the axis of the mixing device of the upper mixing unit, characterized in that the mixing device of the upper mixing unit is a set of parallel flat plates inclined to the horizontal at an acute angle, and the distance between the plates increases from the central plates to the peripheral ones, and the mixing device of the lower mixing unit is made in the form of a set of unequal corners, the distances between which are the same, and the angles of inclination of the large faces to the horizontal increase from the center to the periphery.

The disadvantages of this mixer include the low quality of mixing.

The technical result of this invention is the creation of a mixer of bulk materials, which allows to obtain homogeneous mixtures of high quality.

The technical result is achieved by the proposed mixer of bulk materials containing dispensers, a base on which two mixing units are installed - upper and lower, the upper mixing unit is a set of plates, the distance between which increases from the central plates to the peripheral ones, and the lower mixing unit is made in the form of a set of corners, the distances between which are the same.

Distinctive design features of the proposed invention are that symmetrically arranged flat inclined guides are placed on the sides of the mixing units, and a belt conveyor is placed under the lower mixing unit, the tape of which has rectangular cutouts located with large sides across the tape, the unloading device is placed between the upper and lower sections belts, and between the flat inclined guides there are drive drums with elastic elements on the side surfaces.

In FIG. 1 shows a diagram of a bulk materials mixer.

Bulk materials mixer contains dispensers 1 and 2, base 3, on which two mixing units are installed - upper and lower, the upper mixing unit is a set of plates 4, the distance between which increases from the central plates to the peripheral ones, and the lower mixing unit is made in the form of a set 5 corners, the distances between which are the same. Symmetrically arranged flat inclined guides 6 and 7 are placed on the sides of the mixing units. Under the lower mixing unit there is a belt conveyor 8, the tape 9 of which has rectangular cutouts 10 located with large sides across the tape 9, the unloading device 11 is placed between the upper and lower sections of the tape 9 Between the flat inclined guides 6 and 7, drive drums 12 are installed with elastic elements 13 on the side surfaces.

The mixer of bulk materials works as follows.

Bulk materials to be mixed are fed by dispensers 1 and 2 to a rotating drive drum 12 with elastic elements 13. When materials interact with elastic elements 13, they are scattered with the formation of a dispersed flow. The generated flow hits the inclined guides 6 and plates 4, and multiple reflections occur at different angles, which contributes to the formation of the mixture. Since the distances between the plates 4 increase from the central plates to the peripheral ones, the central sections of the flow interact more intensively with the plates 4, and the side sections of the flow interact with the inclined guides 6. this leads to greater randomization of the process.

Next, the pre-formed mixture enters the rotating drive drum 12 with elastic elements 13, located in the area of the lower mixing unit. When the mixture interacts with elastic elements 13, it is scattered with the formation of a dispersed flow. This flow hits the inclined guides 7 and corners 5, and multiple reflections occur at different angles, which helps to increase the homogeneity of the mixture.

Then the mixture from the lower mixing unit is poured in the form of a rarefied flow onto the moving belt 9 of the belt conveyor 8, the mixture interacts with the belt 9, is reflected from its surface, from the walls of rectangular cutouts 10, is divided into portions, passing through rectangular cutouts 10, this helps to increase its quality. Next, the mixture enters the unloading device 11.

The drive of the belt conveyor 8 is carried out from the electric motor 14.

Due to the fact that symmetrically arranged flat inclined guides 6 and 7 are placed on the sides of the mixing units, multiple reflections of particles at different angles are organized in each mixing unit, which improves the quality of the mixture.

Due to the fact that a belt conveyor 8 is placed under the lower mixing unit, the belt 9 of which has rectangular cutouts 10, additional mixing and averaging of the mixture is carried out, which improves its quality.

Placing rectangular cutouts 10 with large sides across the tape 9 allows you to use the entire width of the tape and place more rectangular cutouts 10, which will allow you to divide the mixture into more portions and provide more intense particle reflections at different angles.

Placing the unloader 11 between the top and bottom portions of the belt 9 prevents it from separating (caused by segregation) during unloading.

Due to the fact that between the flat inclined guides 6 and 7 there are drive drums 12 with elastic elements 13 on the side surfaces, intensive spreading with the formation of dispersed flows is organized.

The proposed design of the mixer makes it possible to obtain mixtures of loose media of high quality.

Claims (1)

Bulk materials mixer containing dispensers, a base on which two mixing units are installed - upper and lower, the upper mixing unit is a set of plates, the distances between which increase from the central plates to the peripheral ones, and the lower mixing unit is made in the form of a set of corners, the distance between which are identical, characterized in that symmetrically arranged flat inclined guides are placed on the sides of the mixing units, and a belt conveyor is placed under the lower mixing unit, the tape of which has rectangular cutouts located with large sides across the tape, the unloading device is placed between the upper and lower sections of the tape, and between the flat inclined guides there are drive drums with elastic elements on the side surfaces.

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