RU2526963C1 - Gravity-type loose materials mixer - Google Patents

Abstract

FIELD: machine building.

SUBSTANCE: proposed mixer comprises stationary vertical rectangular housing accommodating inclined flutes arranged one above the other. Loading devices are arranged at housing top while discharge device is arranged at housing bottom. Angle of flute inclination to horizontal increases from top flute to bottom flute. Every flute is connected with extra devices of loading one of the materials. Triangular cross-section grooves are made at surfaces of the flutes.

EFFECT: higher process efficiency.

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 bulk material 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 [Makarov, Yu.I. Devices for mixing bulk materials / Yu.I. Makarov. - M.: Mechanical Engineering, 1973. - 216 p.]. 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 located in the upper part of the body, and discharge devices in the lower part.

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.

The objective of the invention is to provide a mixer of bulk materials of the gravitational type, which allows you to mix materials, the ratio of which differs by an order of magnitude or more.

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 inclined trays are located one above the other, loading devices are installed in the upper part of the body, and discharge devices are installed in the lower part, longitudinal streams are made on the surfaces of the trays triangular section, and 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 materials.

Figure 1 shows the unit for mixing bulk materials.

Figure 2 shows the surface of an inclined tray with streams.

The mixer of bulk materials of gravity type contains a bed 1, a stationary vertical case of rectangular cross section 2 located on the bed. Inside the case, inclined trays 5 are placed one above the other. In the upper part of the case (in the cover) material loading devices 3 and 4 are installed with dispensers 8, and in lower - unloading devices 7. On the surfaces of the trays longitudinal streams 9 of triangular section are made. Each tray communicates through a window in the wall of the housing with additional loading devices 6, equipped with dispensers 8.

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 gravity type 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.

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

In order to obtain uniform layers of thickness on inclined trays, longitudinal streams of triangular section are made on their surfaces. Due to the fact that as the second component is introduced, the layer thickness increases, the angle of inclination of the trays to the horizontal increases from the upper tray to the bottom, which ensures the 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 unloading devices in the lower part, characterized in that longitudinal streams of triangular section are made on the surfaces of the trays, and 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.

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