RU2522041C1 - Apparatus for mixing granular materials - Google Patents

Abstract

FIELD: chemistry.

SUBSTANCE: apparatus for mixing granular materials comprises loading and unloading devices, a fixed housing, a spray nozzle located inside said housing and consisting of two coaxial cavities linked with radial spray channels, a conic chamber, drives for rotating the spray nozzle and the conic chamber. The outer side surface of the conic chamber is fitted with an auger made of elastic material and the lower part is fitted with gripping blades with windows. The apparatus provides the so-called "dilution" effect, when weight fraction of processed materials in the mixture increase over time during processing.

EFFECT: high quality of mixing granular materials prone to aggregation and materials whose weight fraction differs by an order or more.

3 dwg

Description

The present invention is intended for use in the chemical industry, agriculture, the production of building materials and other industries. The invention primarily relates to those cases of mixing, when the ratio of components in the mixture differ by an order of magnitude or more.

A known unit for mixing and sealing bulk materials containing dispensers, an unloading device, a housing, a drive hollow shaft located in the housing, spraying devices attached to the shaft and a conical baffle element, and a sealing chamber is located in the lower part of the housing [RF Patent No. 2311222].

The disadvantages of this device include the low quality of mixing materials, prone to aggregation and adhesion, design complexity, high specific energy consumption when mixing materials, mass fractions of which differ by an order of magnitude or more.

Closest to the proposed invention is an aggregate for mixing bulk materials containing loading and unloading devices, a stationary housing, a drive spray nozzle located in its internal volume, consisting of two coaxial cavities in communication with radial spray channels, a conical chamber, a breaker element [RF Patent No. 2449829].

The disadvantages of this device include the complexity of the design, the low quality of mixing materials that tend to stick together and aggregate, as well as materials whose mass fractions differ by an order of magnitude or more.

The objective of the invention is the creation of an aggregate for mixing bulk materials, prone to aggregation, materials, as well as components whose mass fractions differ by an order of magnitude or more.

The problem is achieved in that in the aggregate for mixing bulk materials containing loading and unloading devices, a stationary body, a spray nozzle located in its internal volume, consisting of two coaxial cavities in communication with radial spray channels, a conical chamber, rotational motion drives of the spray nozzle and conical chamber, on the outer side surface of the conical chamber there is an auger made of elastic material, in the lower part there are gripping blades with windows, and in between the conical chamber and the inner surface of the casing, which is a storage cavity, and on the bottom of the casing there are "curtain type" discharge devices made in the form of a movable and fixed ring plates with windows.

Figure 1 shows a diagram of an aggregate for mixing bulk materials.

Figure 2 presents a view of A.

Figure 3 shows a view of B.

The unit for mixing bulk materials contains a loading device 1 and 2, a stationary body 3. Inside the stationary body 3 there is a spray nozzle 4, the drive of which is carried out by an electric motor 5. The spray nozzle consists of two coaxial cavities, each of which communicates with radial spray channels 6. A conical chamber 7 is mounted coaxially with the spray nozzle and is rotated from the electric motor 8. A screw 9 made of elas is placed on the outer side surface of the conical chamber tichnoy material. To collect the mixture in the lower part of the conical chamber mounted on the conical chamber gripping blades 10 and windows 11. The area between the inner surface of the housing and the conical chamber is a storage cavity. In the lower part of the storage cavity, a “curtain type” discharge device is installed, made in the form of movable 12 and fixed 13 ring plates with windows 14, designed to direct the mixture to the receiving chamber 15.

A “curtain type” discharge device is installed on the bottom of the case, consisting similarly to the device in the storage zone — of movable 16 and fixed 17 ring plates with windows 18.

The movable annular plates 12 and 16 are provided with rotation mechanisms 19 and 20, respectively.

The unit operates as follows.

The bulk components to be mixed come from the loading devices into the coaxial cavities of the rotating spray nozzle. Under the action of centrifugal forces, particles of materials are sent to radial spray channels and scattered. Formed rarefied flows interact in flight, enter the inner surface of a rotating conical chamber, along which they move up. At this stage, the mutual penetration of particles of the mixed materials and the preliminary formation of the mixture. From the conical chamber, the mixture enters the storage cavity between the inner wall of the housing and the conical chamber. In this zone, the mixture is further mixed using an auger made of flexible material.

The mass ratio of the components entering the inner surface of the conical chamber is in the range 1 / 3-1 / 4.

After some time has passed, the supply of one of the components, the content of which in the mixture is less, stops, and the second material continues to flow into the spray nozzle. Simultaneously with the cessation of the supply of a component with a lower mass fraction, the pre-mixture is discharged from the storage cavity to the receiving chamber through the windows 14, which open when the ring plate 12 is rotated. up its inner surface.

The moving layer of the mixture interacts with the flow of particles coming from the spray nozzle.

Thus, the second component is gradually added to the preformed mixture, and the process is repeated until the desired ratio of components is achieved. Such a gradual increase in the concentration of one of the components prevents aggregation and obtain a homogeneous mixture.

In this apparatus, the effect of “dilution” is realized when the concentrations of the starting components increase in time as they are processed — mixed. Mass fractions may vary by an order of magnitude or more. In the proposed apparatus, it is advisable to mix bulk materials that differ in humidity and are prone to aggregation.

Unloading of the finished mixture occurs through the windows 18 when the movable annular plate 16 is rotated.

The proposed unit allows to achieve high quality mixing of bulk materials, prone to aggregation, materials whose mass fractions differ by an order of magnitude or more.

Claims (1)

A unit for mixing bulk materials containing loading and unloading devices, a fixed housing, a spray nozzle located in its internal volume, consisting of two coaxial cavities in communication with radial spray channels, a conical chamber, rotational drives of the spray nozzle and a conical chamber, characterized in that on the outer side surface of the conical chamber there is an auger made of elastic material, in the lower part there are gripping blades with windows, and in the zone between the conical by the amer and the inner surface of the casing, which is a storage cavity, and on the bottom of the casing there are installed “curtain type” discharge devices made in the form of movable and fixed ring plates with windows.

Images