RU2622667C1 - Device for mixing and grinding dispersed materials - Google Patents

Abstract

FIELD: machine engineering.

SUBSTANCE: device for mixing and grinding of particulate material comprises a loading and unloading apparatus housing disposed therein a rotor with blades having self lining pockets impingement elements, an air classifier and a device for returning unmilled material. To the top of the housing, a mixing device is connected, in which is placed the shaft with the rotary atomizer. On both sides of the disk atomizer, spiral-shaped blades with the opposite direction are installed. To supply the second component at the top of the mixing apparatus arranged pipe, and in the lateral outside of the housing - the guide cavity, the housing of the mixing device is informed through a funnel having an inner volume of the housing.

EFFECT: it is possible to obtain a homogeneous mixture of materials, whose particles differ substantially original size.

4 dwg

Description

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

Known centrifugal impact mill [RF Patent No. 2232638], consisting of a housing, loading and unloading devices, a rotor with accelerating blades, a stationary shell with windows and crushing plates. The crushing plates are fixed with an inclination relative to the vertical axis of 1-15 °. The shell may consist of inserts to control the number and size of windows.

The disadvantages of this mill include the rapid and uneven wear of accelerating blades and crushing plates during grinding of hard abrasive materials.

Closest to the proposed invention is a centrifugal impact mill Titan M-125 [http://www.new-technologies.spb.ru], containing loading and unloading devices, a housing, a rotor with blades having self-lining pockets in it. The mill is equipped with an air classifier and a device for the return of unmilled material. Despite the fact that this mill is not intended for carrying out mixing and grinding processes, it has close structural similarities with the proposed invention.

The disadvantages of a centrifugal impact mill are the inability to conduct sequential processes of mixing and grinding dispersed materials.

The objective of the invention is the creation of a device for mixing and grinding dispersed materials, allowing for sequential grinding and mixing of dispersed materials.

This object is achieved in that in a device for mixing and grinding dispersed materials containing loading and unloading devices, a housing, a rotor with blades having self-lining pockets, fender elements, an air classifier and a device for returning unmilled material to the upper part of the housing are connected a mixing device in which a shaft with a disk sprayer is placed, on both sides of which there are spiral-shaped blades having the opposite direction for feeding and a second component, a nozzle is placed in the upper part of the mixing device, and guide cavities in the side, on the outside of the housing, the housing of the mixing device communicating via a funnel with the internal volume of the housing.

In FIG. 1 shows a diagram of a device for mixing and grinding dispersed materials.

In FIG. 2 shows view A.

In FIG. 3 shows a view of B.

In FIG. 4 shows view B.

A device for mixing and grinding dispersed materials contains a device for loading the crushed material (the first mixed component) 1 and unloading 2, the housing 3, the rotor 4 placed therein with blades 5 having self-lining pockets 6, an air classifier 7 and a device for returning unmilled material 8. The rotor is driven by an electric motor 9. A mixing device 10 is connected to the upper part of the housing, in which a shaft with a disk atomizer 11 is placed. A spiral is mounted on both sides of the atomizer idnye blades 12 and 13 having the opposite direction. The drive of the disk atomizer comes from the electric motor 14. The second component is fed through the nozzle 15. The mixture is discharged through the guiding cavities 16 to the discharge device 2. The material is crushed when it hits the breaker elements 17. Unmilled material is discharged through the nozzle 18. The mixing device body is connected through the funnel 19 with the internal volume of the housing 3.

The principle of operation of the device is based on the sequential process of grinding particles of one of the materials to the desired size and subsequent mixing with particles of the second component. The need for these technological operations is explained by the complexity of mixing the components, the particles of which differ in size.

A device for mixing and grinding dispersed materials works as follows. One of the components, the particles of which are larger, enters through the loading device 1 to the rotating rotor 4, is captured by the blades, accelerates, and the generated stream hits the breaker elements 17 and is ground to the required size (close to the particle size of the second component). Particles of crushed material are carried away by the flow created by the air classifier 7 to the upper part of the housing, from where they pass through a funnel 19 to the lower surface of the rotating disk atomizer 11, where they are captured by the blades 12 and sprayed. At the same time, the second component is supplied to the upper surface of the rotating disk atomizer 11 through the pipe 15, the particles of which are captured by the blades 13 and sprayed. The dispersed particle flows of both components intersect, and there is a uniform distribution of particles of one component in the other, i.e., mixing. The mixture thus prepared falls into the guiding cavities 16, moves along them and enters the discharge device 2.

Particles of the first component, the size of which is larger than the required (unmilled), fall into the device for returning unmilled material 8, and from it to the loading device 1. The device for returning unmilled material is a conveyor system of screw or belt type.

Due to the fact that the spiral-shaped blades located on the upper and lower sides of the disk atomizer have the opposite direction, it is possible to obtain the best uniform distribution of particles of the mixed materials in the overlapping zone, which is necessary to obtain a high-quality mixture.

Thus, in the proposed device for mixing and grinding dispersed materials due to the preliminary grinding of one of the components, it is possible to obtain homogeneous mixtures of materials whose particles initially differed significantly in size.

Claims (1)

A device for mixing and grinding dispersed materials, containing loading and unloading devices, a housing, a rotor with blades therein having self-lining pockets, baffle elements, an air classifier and a device for returning ground material, characterized in that a mixing device is connected to the upper part of the housing , in which a shaft with a disk atomizer is placed, on both sides of which spiral-shaped blades are installed, having the opposite direction, for supplying the second component a nozzle is placed in the upper part of the mixing device, and guide cavities in the sides on the outside of the housing, the mixing device housing communicating through a funnel with the internal volume of the housing.

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