RU2378041C1 - Granular material mixer - Google Patents

Abstract

FIELD: chemistry.

SUBSTANCE: invention is meant for use in the chemical industry, industrial agriculture, production of construction materials and other industries. The granular material mixer has pipes for loading granular material and unloading ready mixture, a cylindrical housing which is made in form of an annular chamber, inside of which there are working members and a vertical shaft with a rotary actuator. The bottom of the housing is fitted with possibility of rotation through the vertical shaft. Pipes for loading material are placed in series inside the housing along its perimetre. The working members are mixing augers.

EFFECT: mixer is distinguished by a simple design, provides highly efficient mixing with possibility of controlling time for mixing granular materials.

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Description

The present invention is intended for use in the chemical industry, agriculture, the production of building materials and other industries. The use of the mixer is most relevant in the preparation of complex mixtures of bitumen particles with an inert powder filler in relation to the production of asphalt concrete.

A known unit for mixing bulk materials containing dispensers, a mixing device consisting of a housing located in the shaft housing with blades mounted on it, which have windows and a fencing element attached to them. The unit has conical surfaces, it also contains drums with parallel axes, on the surface of one of which there are radial elastic elements [RF Patent No. 2242272, BI No. 35, 2004, IPC B01F 3/18]. The disadvantages of this device include the complexity of the design and the low quality of mixing materials, especially when the particle sizes are very different.

Closest to the proposed invention is a mixer of bulk materials containing nozzles for loading bulk materials and unloading the finished product, a cylindrical body made in the form of an annular chamber, a vertical shaft to which the working bodies are connected. The working bodies have elastic elements made in the form of brushes in contact with the bottom of the working chamber of a wave-like shape. The bottom has a protrusion and vertical walls on both sides, and the inside is equipped with an outlet associated with the discharge pipe. Under the working chamber there are gutters that have the ability to rotate around the axis and equipped with damping devices [RF Patent No. 2256493, published on July 20, 2005, bull. twenty].

The disadvantages of this mixer include the complexity of the design and low quality of mixing, especially in relation to bulk materials, the particle sizes of which differ by an order of magnitude or more. It is especially difficult to use this device when one or both materials have a tendency to adhere to the working bodies.

The objective of the invention is the creation of a mixer of bulk materials, differing in size by an order of magnitude or more, for example, in relation to road construction. The mixer should be of a simpler design, provide high mixing efficiency with the ability to control the mixing time of materials.

The problem is achieved in that in the mixer of bulk materials containing nozzles for loading bulk materials and unloading the finished mixture, a cylindrical body made in the form of an annular chamber inside which working bodies and a vertical shaft with a rotational drive are placed, the bottom of the body is mounted for rotation the help of the vertical shaft, and in the internal volume of the housing along its perimeter there are successively placed material loading nozzles, and the working bodies are mixing tubes Neki.

Figure 1 shows a diagram of a mixer of bulk materials (section aa),

figure 2 shows a top view.

The mixer of bulk materials consists of a cylindrical body 1, made in the form of an annular chamber and having a movable bottom 2, nozzles for loading bulk materials 3 and unloading the finished mixture 4, a vertical shaft 5 with a drive 6 located inside the housing of the mixing screws 7.

The mixer bulk materials works as follows.

From the nozzle loading bulk materials 3, one of the components enters the surface of the rotating movable bottom 2 and is distributed in a uniform layer. Next, the layer of material is sent to the feed zone of the second component, where it passes under the next nozzle loading bulk materials 3, while particles of the second component are applied to its surface. Then, the material passes under the next nozzle of loading the friable materials 3 and is covered with particles of the first component.

After passing through the loading zone, the components located in layers are sent to the mixing zone and are mixed by the rotating mixing screws 7.

To prevent spillage of the material during mixing, the mixing and loading zones are located inside the cylindrical body 1, made in the form of an annular chamber. The finished mixture is unloaded through the discharge pipe 4, located in the side of the housing 1. Next, the mixture can be supplied to the seal, for example by granulation, for use in production purposes.

In the proposed mixer, you can control the time spent by the components in the apparatus by changing the rotation frequency of the moving bottom 2. The proposed mixer has a simple design and has a fairly high quality of mixing.

Claims (1)

The mixer of bulk materials containing nozzles for loading bulk materials and unloading the finished mixture, a cylindrical body made in the form of an annular chamber inside which working bodies are placed, and a vertical shaft with a rotary drive, characterized in that the bottom of the body is mounted for rotation by means of a vertical shaft, and in the internal volume of the housing along its perimeter are placed pipes for loading materials, and the working bodies are mixing screws.

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