RU2577872C1 - Mixer of bulk materials of gravity type - Google Patents

Abstract

FIELD: machine building.

SUBSTANCE: mixer of bulk materials of gravity type contains a fixed vertical casing having rectangular cross-section, inside it above each other the inclined trays are located. In top part of the casing the loading devices, and in bottom part the unloading devices are installed, the trays inclination angle relatively to horizontal line increases from top tray to bottom one. Each tray is connected with the additional loading devices of one of the materials. Above the trays the rails with elastic elements are installed, they have drive reciprocating movement, wherein the length of the elastic elements and distances between them increase from the top rail to bottom one.

EFFECT: use of the suggested device at industrial enterprises increases efficiency of mixing.

2 dwg

Description

The 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. The mixer of bulk materials of gravitational type / A.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. Loading devices are installed in the upper part of the body, 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 gravitational type, containing a stationary vertical case of rectangular cross section, inside which there are inclined trays, loading devices are installed in the upper part of the case, and discharge devices are installed in the lower part, the angle of inclination of the trays to the horizontal increases from the upper tray to the bottom, with each of the trays communicating with additional loading devices of one of the materials; rails with elastic elements are installed above the trays equipped with a reciprocating drive, the length of the elastic elements and the distance between them increase from the top rail to the bottom.

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. Inside the case, inclined trays 5 are placed one above the other. In the upper part of the case (in the lid area) material loading devices 3 and 4 with dispensers 8 are installed, and in the lower part there are unloading devices 7. Each tray communicates through the window in the case wall with additional loading devices 6, equipped with dispensers 8. Above the trays there are rails 9, with elastic elements 10, equipped with a reciprocating drive 11.

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.

One of the mixed components (whose mass content is lower) from the loading device 3 enters the upper inclined tray 5 with a layer uniform in width of the tray and moves along its surface.

The second component (the content of which is greater in the mixture) begins to flow onto the formed layer from the loading device 4. When thin-layer movement along the surface of the tray, the materials are mixed. In order to intensify the mixing process, a rail 9 is installed over the tray with elastic elements that contact the surface of the tray. With the reciprocating movement of the rail, additional mixing of the components occurs.

Then the mixture in the form of a thin layer enters the next inclined tray, where a layer is applied of a second component, uniform in width, of the second component from the next additional loading device 6. The materials are mixed and the process is repeated until the unloading device 7 is reached.

Due to the fact that as the second component is introduced, the thickness of the layers increases, the length of the elastic elements and the distance between them grows from the top to the bottom rails, which ensures the same speed of movement of the mixture.

Thus, in the process of moving the mixture down the inclined trays, it is saturated with the second material from additional loading devices 6. With this organization of the supply of mixed materials, you can get a mixture with a ratio of components of more than 1:10.

The proposed unit for mixing bulk materials has a fairly simple design, does not have moving parts 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 a stationary vertical case of rectangular cross section, inclined trays are located one above the other, loading devices are installed in the upper part of the body, and discharge devices in the lower part, the angle of inclination of the trays to the horizontal increases from the upper tray to the lower, and each of the trays communicates with additional loading devices of one of the materials, characterized in that rails with elastic elements equipped with a drive are installed above the trays reciprocating motion, and the length of the elastic elements and the distance between them increase from the upper rack to the bottom.

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