RU2311952C1 - Bulk material mixing apparatus - Google Patents

Abstract

FIELD: technique used in chemical, construction and other branches of industry for producing of compacted mixtures.

SUBSTANCE: bulk material mixing apparatus has casing, charging and discharge devices, shaft mounted within casing and provided with rotation drive for imparting rotational motion relative to vertical axis, conical devices connected to shaft and comprising partition members, and conical baffle joined to casing. Partition members are formed as cylindrical elastic members positioned in upper conical device perpendicular to its outer surface, and in lower conical device radially of and perpendicular to axis of shaft. Conical baffle disposed in the vicinity of upper conical device and attached to casing is made wavy and circular in its shape at side adjoining to shaft.

EFFECT: simplified construction, increased efficiency and improved quality of mixing and compaction processes.

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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.

A known mixer of bulk materials, comprising a housing, a cover on which a feeder with loading nozzles is mounted, a drive shaft with unloading blades fixed to it and a rotor made in the form of a disk, with concentrically arranged hollow truncated cones with height and angle generatrix to the base increases from the central part to the periphery. On the working surfaces of the inner and middle cones are windows that are bounded below by the surface of the disk. On the inner surfaces of the middle and outer cones, guide vanes are installed spiral-shaped, having a number of holes and a circular arc profile [RF Patent No. 2226343, BI No. 35, 2004, IPC B01F 7/26]. The disadvantages of this device include the complexity of the design, low quality mixing.

Closest to the proposed invention is an aggregate for mixing bulk materials containing dispensers, a mixing device consisting of a housing located in the shaft housing with partitions fixed to it, which have windows and a fencing element attached to them. The unit 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 materials that differ significantly in density.

The objective of the invention is the creation of an aggregate for mixing bulk materials, a relatively simple design that provides high mixing efficiency, including materials with different densities.

This object is achieved in that in the aggregate for mixing bulk materials containing the housing, loading and unloading devices, a shaft located in the housing with a rotational drive relative to the vertical axis, conical devices attached to the shaft, containing elements - partitions, a conical chipper attached to the housing , the elements - partitions are cylindrical elastic elements that are placed in the upper conical device perpendicular to its outer surface, and in the lower mouth updated radially, perpendicular to the axis of the shaft, moreover, the conical chipper located in the area of the upper conical device and attached to the housing has a wave-shaped circular shape on the shaft side.

Figure 1 presents the diagram of the unit for mixing bulk materials.

Figure 2 presents a section aa.

Figure 3 presents a view of B.

The aggregate for mixing bulk materials contains a housing 1, a loading device 2, an unloading device 3, a shaft 4 with a drive 5 located in the housing, conical devices 6 and 7, a chipper 8. The conical device 7 has elastic elements, for example, of cylindrical shape .

Unit operation.

Bulk materials to be mixed come from the loading device 2 to the outer surface of the upper conical device 7, where, under the action of centrifugal force, they move to its periphery. When this occurs, the interaction of bulk materials, both mutual and with elastic elements located on the outer surface of the device 7. In this zone, pre-mixing takes place. Further, the materials, unloading from the conical bump 8, enter the lower conical device 6 and interact with the elastic elements. The elastic elements forming the conical device 6 can also be cylindrical in shape and placed perpendicular to the axis of the shaft. In this mixing zone, there is an effective final preparation of a quality mixture. The finished product is unloaded through the unloading device 3.

Thus, the formation of the finished mixture is carried out in 3 zones. Firstly, by the interaction of granular media on the upper conical device. Secondly, due to the interaction of the particle flow with a conical chipper. Due to the fact that the conical chipper has a wave-shaped cross section, effective interaction of dispersed flows reflected from the chipper is carried out. Thirdly, when the reflected flow falls on the lower conical device formed by radial elastic elements, and the flow interacts with these elements, the final processing of granular media is carried out to obtain a high quality mixture. The presence of these mixing zones allows you to process bulk media that differ in density several times.

Claims (1)

An aggregate for mixing bulk materials, comprising a housing, loading and unloading devices, a shaft located in the housing with a rotational drive relative to the vertical axis, conical devices attached to the shaft, containing elements — baffles, a conical bump attached to the housing, characterized in that the elements - the partitions are cylindrical elastic elements that are placed perpendicular to its outer surface in the upper conical device, and are installed radially in the lower perpendicular to the axis of the shaft, moreover, a conical chipper located in the area of the upper conical device and attached to the housing has a wave-shaped circular shape on the shaft side.

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