RU2323039C1 - Device for mixing and packing loose materials - Google Patents

Abstract

FIELD: mixing loose materials.

SUBSTANCE: device comprises cylindrical-conical housing provided with the device for charging and discharging, shaft provided with a drive for setting it in rotation and mounted inside the housing, and nozzle connected with the shaft. The shaft is hollow and is connected with the branch pipe for supplying material that is in communication with a sprayer. The sprayer and nozzle are made of curved cap-like members. The housing is connected with the discharging device through an adapter.

EFFECT: enhanced efficiency.

2 dwg

Description

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

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, which is also due to the insufficient residence time in the mixing zone, the inability to adjust the residence time of materials in the mixing zone.

Closest to the proposed invention is a mixer of bulk materials containing a cylindrical 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 nozzles attached to it, made in the form of concentrically arranged hollow truncated cones, in which the height and angle of inclination of the 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, helical blades are installed spirally, having a number of holes and a circular arc profile. [RF patent No. 2246343, BI No. 35, 2004, IPC B01F 7/26]. The disadvantages of this device include the complexity of the design, the low quality of mixing, the inability to obtain a compacted mixture.

The objective of the invention is the creation of an aggregate for mixing bulk materials of a relatively simple design, while providing high efficiency for mixing and compaction of bulk materials.

This object is achieved by the fact that in the unit for mixing and compaction of bulk materials containing a cylindrical housing with loading and unloading devices, a shaft with a rotary motion drive located in the housing, to which the nozzle is attached, the shaft is hollow and a pipe is coaxially attached to it in the internal volume supply of material to which the atomizer is attached, the atomizer and nozzle being made in the form of curved cup-shaped elements, and the casing has a toroidal transition.

Figure 1 presents the unit for mixing and compaction of bulk materials.

Figure 2 presents a section aa.

The unit for mixing bulk materials contains a housing 1, a shaft 2, a rotational drive 3, a sprayer 4, a nozzle 5, a pipe 6, a loading device 7 and 8 and a discharge device 9.

Unit operation.

Bulk materials to be mixed come from the loading devices 7 and 8 through the internal cavities of the shaft 2 and the pipe 6 to the outer surface of the atomizer 4 and the inner surface of the nozzle 5 and move along them in thin layers. When the material moves along the rotating atomizer 4 under the action of centrifugal forces, the particles break off its surface and uniformly penetrate into a thin layer of another component moving along the nozzle. In this case, a uniform distribution of particles of one material in another occurs. Further movement of the mixture on the inner surface of the nozzle leads to its compaction. To ensure a smooth transition of the mixture to the discharge device 9, a torus-like transition is provided in the housing.

High quality mixing of two dissimilar media is provided by two factors. Firstly, mixing occurs by applying a thin layer of one material moving along the nozzle and formed by a rotating nozzle, and the second, formed by a spray gun and applied as a dispersed stream to the first layer. Secondly, due to the action of centrifugal forces of rotational motion, there is an interaction of the layers, the penetration of particles of one material into the layer of another. At the same time, due to the action of the same centrifugal forces, the formed resulting layer is densified with the deaeration process proceeding simultaneously. Due to the toroidal transition in the housing, a smooth discharge of the mixture from the apparatus without loosening is ensured.

The proposed unit provides a high-quality mixture with its simultaneous compaction, which is important, including from the point of view of container savings.

Claims (1)

A unit for mixing and compaction of bulk materials, containing a cylindrical-conical housing with loading and unloading devices, a shaft with a rotary motion drive located in the housing, to which a nozzle is attached, characterized in that the shaft is hollow and a supply pipe is coaxially attached to it in the internal volume material to which the atomizer is attached, the atomizer and nozzle being made in the form of curved cup-shaped elements, and the body has a toroidal transition to the discharge device.

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