RU2554141C2 - Centrifugal mixer of bulk materials - Google Patents

Abstract

FIELD: machine building.

SUBSTANCE: centrifugal mixer of bulk materials contains dosing units, unloading device, fixed casing. Inside the casing a baffle and driven spraying nozzle are installed; the nozzle has coaxial chambers, each chamber is equipped with radial channels, nozzles alternating in circle direction. The baffle is made out of set of cone inserts with various cone angles, under it a receiving device is installed connected to the casing, it is made out of set of ring guide elements, at that distances between the guide elements are made variable and increasing to both sides from the central guide.

EFFECT: invention ensures design simplification of the centrifugal mixer and increased quality of components mixing.

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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 unit for mixing bulk materials [RF Patent No. 2449829]. The unit contains dispensers associated with the dispensers of the loading device, the unloading device, a stationary housing. A conical baffle element and a drive hollow shaft with a conical nozzle and a conical chamber equipped with spray channels alternating in its circumferential direction are located in the housing.

The disadvantages of this device include the complexity of the design and the low quality of mixing.

Closest to the proposed invention is a continuous centrifugal mixer [RF Patent No. 2449829].

The mixer contains dispensers, an unloading device, a fixed housing, in the internal volume of which a chipper is installed and a drive spray nozzle consisting of coaxial chambers, each of which is equipped with radial channels alternating in the peripheral direction of the nozzle.

The disadvantages of this device include the complexity of the design and the low quality of mixing caused by the separation of the mixture during the selection process (when it hits the wall of the body and moves to the discharge device).

The objective of the invention is the creation of a centrifugal mixer of bulk materials of a relatively simple design having high quality mixing.

The problem is achieved in that in a centrifugal mixer of bulk materials containing dispensers, an unloading device, a fixed housing, in the inner volume of which a bump stop and a drive spray nozzle having coaxial chambers, each of which is equipped with radial channels alternating in the peripheral direction of the nozzle, the element is made of a set of coaxial conical inserts with different taper angles, under which a receiving device connected to the housing, consisting of ora annular guide elements, the distance between them are made variables and growing on either side of the central guide, and a receiving device disposed unloading device in the form of annular chamber.

Figure 1 shows a diagram of a centrifugal mixer of bulk materials.

Figure 2 presents a section aa.

Figure 3 shows a top view.

Figure 4 shows the receiving device with ring guides (top view).

The centrifugal mixer of bulk materials contains a stationary housing 1, dispensers 2. In the internal volume of the housing there is a drive spray nozzle 3 consisting of coaxial chambers. Each coaxial chamber is equipped with radial channels 4 and 5. In the central part of the housing 1, a bump 7 is installed, under which a receiving device 8 is located, consisting of a set of annular guiding elements 9. In the lower part of the housing 1, a discharge device 10 is located 10. The spray drive nozzles are carried out from the electric motor 6.

A centrifugal mixer of bulk materials works as follows.

The bulk components to be mixed come from the dispensers 2 into the coaxial chambers of the spray nozzle 3. When the nozzle rotates under the action of centrifugal forces, the mixed materials are sent to the radial channels 4 and 5, moved along them and sprayed. This organization of movement provides separate dispersion of materials. Formed dispersed streams of solid particles hit the chipper 7 and are reflected, going further into the gaps between the annular guiding elements 9 of the receiving device 8. The mixture from the receiving device moves and settles in the discharge device 10.

The mixing process occurs with the layer-by-layer application of flows reflected from the chipper in the plane of the discharge device. The implementation of the fencing element from a set of conical inserts with different taper angles allows for the coincidence of volume distributions and ratios of the mixed materials over the entire cross section of the flow, which is necessary to obtain a homogeneous mixture.

Due to the fact that the concentration of particles in the sections of the flows reflected from the chipper is not evenly distributed, the distances between the annular guide elements 9 are made variable and increasing on both sides of the central guide (inversely proportional to the volumetric flow density).

The unloading device is an annular container located under the receiving device in the lower part of the housing, which allows collection of the mixture from the receiving device.

The proposed centrifugal mixer of bulk materials allows for low energy consumption and relatively small dimensions to ensure good mixing of bulk media.

Claims (1)

A centrifugal mixer of bulk materials containing dispensers, an unloading device, a fixed housing, in the internal volume of which there is a chipper and a drive spray nozzle having coaxial chambers, each of which is equipped with radial channels alternating in the circumferential direction of the nozzle, characterized in that the jack element is made of a set of coaxial conical inserts with different taper angles, under which is placed a receiving device connected to the housing, consisting of a set of annular directions elements, the distances between which are made variable and increasing on both sides of the central guide, and under the receiver there is an unloading device in the form of an annular chamber.

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