RU2586126C1 - Mixer of bulk materials of gravity type - Google Patents

Abstract

FIELD: chemistry.

SUBSTANCE: invention is intended for use in chemical industry, agriculture industry, production of building materials, and other industries. Mixer of gravity type for bulk materials contains loading and unloading devices, fixed vertical casing of rectangular cross-section, inside of which are located, one above another, inclined trays, angle of their inclination to horizontal increases from top tray to bottom; main loading devices are installed in upper part of housing, and additional loading devices are installed at side; bottom parts of inclined trays have rounded shape, wherein brush type mixing devices are located, wherein opposite to inclined trays there are guide plates and baffle plates of curved shape.

EFFECT: invention provides higher efficiency of mixing process.

1 cl, 2 dwg

Description

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

Known mixer bulk materials [RF Patent No. 2256493]. The mixer comprises a housing, a cylindrical working chamber located inside its upper part, connected to product loading and unloading devices. A vertical shaft is installed inside the housing, to which working bodies are attached, having elastic elements on the surface, made in the form of brushes in contact with the bottom of the working chamber, in a wavy shape. Under the working chamber are located one above the other inclined trays, which can be rotated around the axis and equipped with damping devices.

The disadvantages of this unit include the impossibility of obtaining a homogeneous mixture, the content of components in which differs by an order of magnitude and higher.

Closest to the proposed invention is a gravity mixer [US Pat. 2526963 Russian Federation, В28С 5/04 Mixer of bulk materials of gravitational type / А.I. Zaitsev, A.E. Lebedev, A.B. Kapranova. - Publ. 08/27/2014]. The mixer contains a stationary vertical case of rectangular cross section, inside of which inclined trays are located one above the other. The main loading device is installed in the upper part of the body, additional loading devices in the lateral part, and unloading devices in the lower part. On the surfaces of the trays, longitudinal streams of triangular section are made, and the angle of inclination of the trays to the horizontal increases from the upper tray to the bottom, each of the trays communicating with additional loading devices of one of the materials.

The disadvantages of this unit include the complexity of the design and the low quality of mixing.

The objective of the invention is to provide a mixer of bulk materials of the gravitational type, having a relatively simple design and allowing to obtain high quality mixtures.

The problem is achieved in that in the mixer of bulk materials of gravity type, containing loading and unloading devices, a stationary vertical case of rectangular cross section, inside which there are inclined trays, the angle of inclination of which increases horizontally from the upper tray to the lower, the main loading devices are installed in the upper part of the housing, and additional ones in the side, the lower parts of the inclined trays are rounded, in the area of which there are mixing devices of brush type and, and opposite the inclined trays, guide plates and fender elements of a curved shape are installed.

In FIG. 1 shows an aggregate for mixing bulk materials.

In FIG. 2 shows view A.

The mixer of bulk materials of the gravitational type contains a frame 1, a stationary vertical housing 2 of rectangular cross section located on the frame. In the upper part of the body, the main loading devices 3 and 4 are installed, in the lateral part - additional 5, and in the lower part - the unloading device 6.

Inside the case, inclined trays 7 are placed one above the other, the lower parts of which are rounded 8. The angle of inclination of the trays to the horizontal increases from the upper tray to the lower. Over each inclined tray, in the curvature zone, a mixing device 9 of brush type is installed.

Opposite the inclined trays are placed guide plates 10 and fender elements 11 of a curved shape. The mixing device is driven by an electric motor 12.

The principle of operation of the mixer of bulk materials of the gravitational type is based on the portioned (gradual) introduction of one of the components of the mixture into another (principle of dilution).

The mixer bulk materials gravitational type of bulk materials works as follows.

Mixed components come from the main loading devices into the internal volume of the housing on the upper inclined tray and move down its surface. The lower parts of the inclined trays are rounded, in the area of which are placed mixing devices of the brush type, which are drive drums with radial elastic elements on the surface. Passing under the mixing device, the materials are sprayed, the formed dispersed stream hits the surface of the chipper and is reflected on the guide plate. At this stage, one of the components is mixed with the first portion of the second (the content of which is greater in the mixture).

Then, from the guide plate, the mixture falls on the inclined tray located below, where the next portion of the second component is introduced from the additional loading device. The process is repeated until the unloading device is reached.

The angle of inclination of the inclined trays to the horizontal increases from the upper tray to the lower, this allows you to intensify the mixing process by changing the speeds of the mixed materials from step to step.

Thus, in the process of moving the mixture down the inclined trays, it is saturated with the second material from additional loading devices. With this organization of the supply of mixed materials, you can get a mixture, the ratio of components in which 1:10 or more.

Due to the fact that the fenders have a curved shape, it is possible to obtain reflected flows of the required structure and shape necessary to obtain a high-quality mixture.

The proposed unit for mixing bulk materials has a relatively simple design and is able to produce batch mixing and obtain homogeneous mixtures of components with a mass ratio of 1:10 or more.

Claims (1)

A gravity-type bulk material mixer containing loading and unloading devices, a fixed vertical case of rectangular cross section, inside which there are inclined trays, the angle of inclination of which increases horizontally from the upper tray to the lower, the main loading devices are installed in the upper part of the case, and additional - in the side, characterized in that the lower parts of the inclined trays are rounded, in the area of which are placed mixing devices of the brush type, and opposite to pubic trays are installed guide plates and curved impingement elements.

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