SU1457979A1 - Apparatus for processing granular materials - Google Patents

Abstract

The invention relates to a technique for processing granular materials and can be used in various sectors of the national household. The purpose of the invention is to intensify the mixing process. The device comprises a rotating drum with blades on the inner surface. Inside the drum is a cylindrical rectangular chamber (K), mounted vertically or obliquely along the axis of the drum. In K, a vortex layer of ferromagnetic particles is created. At the entrance to K there is a diffuser with a nozzle for supplying a liquid or gaseous component. Perforated trays are disposed below To distribute the particulate material. 3 hp f-ly, 2 ill.

Description

one

The invention relates to a technique for processing granular materials and can be used in various sectors of the national household associated with the processing of bulk materials.

The purpose of the invention is to intensify the process of processing in microvolumes and axial mixing - a device for processing granular materials containing a rotating drum, on the inner surface of which there are blades, a nozzle for supplying a liquid or gaseous component, loading and unloading units, an actuator equipped with the chamber with a vortex layer of ferromagnetic particles installed inside the drum, the chamber is made ciliydric and installed either vertically or at an angle to the vertical, providing conductive material advancement along the axis of the chamber further chamber is of rectangular section and is located along the drum axis, and the feed nozzle

liquid or gaseous agent installed inside the diffuser.

FIG. 1 shows the device, a general view; in fig. 2 - installation, cross section.

A device for processing granular materials consists of a rotating drum 1, on the inner surface of which blades 2 are installed, a nozzle 3 that is installed in a diffuser 4 located above the chamber 5 with a vortex layer of ferromagnetic particles, loading units 6 and unloading 7. Under the chamber are perforated trays 8, inclined to the horizon at different angles.

The device works as follows.

The original granular material or several different components for the case of a mixer flows through the loading unit 6 into the rotating drum 1. The material is caught by the blades, lifted upwards and then discharged from the blades.

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after which the cycle is repeated. During the movement, the material is displaced and when falling from the blades it enters the diffuser 4 and then into the chamber 5 with a vortex-Bbiv layer of ferromagnetic particles. In a 4cv Be chamber with a vortex layer, a known construction can be used.

When passing through the chamber 5, the material is vigorously stirred, crushed if necessary, and after leaving the chamber it falls on the perforated trays 8.

FIG. 1 shows a variant with two perforated trays, but it is also possible to use a large number of perforated trays. The flow of material divides c-F into several streams (depending on the number of perforated trays) and begins to slide down these trays. It is obvious that the speed of movement of the material depends largely on the angle of inclination of the tray to the horizon, the greater the angle of inclination, the greater the acceleration of the movement of the material. Part of the material, when moving along trays, spills through the perforation holes, which intensifies the axial mixing of the material.

If necessary, a gaseous or liquid agent is supplied through the nozzle. 3, since the granular material in the diffuser and chamber is in a rarefied state, the interaction of the granular material with the liquid or gaseous agent occurs very intensively.

When using several chambers (see FIG. 3), the output of one of them can be connected to the device 7 for unloading material. Such an embodiment of the device ensures that all the material passes through the chamber with a vortex layer of ferromagnetic particles, i.e., all the microvolumes will be intensively treated with a granular material.

Changing the number of perforated trays, their angle of inclination to the horizon, diameter and number of perforation holes can be controlled not only by axial mixing (circulation of material in the axial direction of the drum), but also to adjust the residence time of the material in the device.

The device can work both in the periodic mode, and in the continuous. When working in a periodic mode, the sequence of the process, for example, mixing the next. The components are loaded into a drum, which is presented in a drum. Trays are set in such a way that the total capacity (i.e., the amount of material being processed that has passed through the trays per unit time) of the trays directed the material towards the loading unit is equal to the capacity of the trays directed yushi.kh material towards the node

unloading. A vortex electromagnetic apparatus is turned on, i.e., a vortex layer of ferromagnetic particles is created in chamber 5. After the time required for

The mixture, which is calculated theoretically or determined experimentally, will mix the trays in the direction of the loading unit, thereby increasing the supply of material to the discharge unit. The material being processed begins to be unloaded from the drum. At the end of the unloading, the cycle is repeated.

When organizing a continuous process, trays are installed in such a way that the difference between the capacity of the trays that cause the material to the discharge unit and the trays that direct the material to the load side is equal to the amount of material fed into the drum per unit time.

The device allows several operations to be carried out in one apparatus at once, for example: mixing and grinding; mixing and applying liquid coatings; mixing of bulk materials, grinding and mixing with the liquid phase, etc., i.e.

5 effectively use the internal volume of the drum and save occupied production areas.

The device was compared with a periodic batch mixer (diameter 2 m, length 4 m), which

0 is used for mixing powdered pigments. The loading into the mixer is about 800 kg. The mixing time is 6-8 hours. The mixing time is limited by the quality of the mixture in microvolumes. Power consumption is on the order of 15 kW / h. With

5 using a device with a vortex chamber diameter of 150 mm and a power consumption of about 9.5 kW / h, the mixing time does not exceed 2 hours. Thus, the performance of the basic object is 100 kg / h and the specific energy consumption is 0.15 kW / kg , the performance of the proposed device is 400 kg / h and the specific energy consumption is 0.024 kW / kg. With a productivity of one apparatus about 2000 kg per day use

5, the proposed device saves on the order of 250 kWh per day, or more than 75,000 kW of electricity per year.

Thus, the proposed device has significant advantages over the known.

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Claims (4)

1. A device for processing granular materials, containing a rotating drum with blades on the inner surface, a nozzle for supplying a liquid or gaseous component, loading and unloading units, an actuator, characterized in that, in order to intensify the mixing process, it is equipped with a chamber with ferromagnetic particles placed inside the drum and having a diffuser and trays, the diffuser is located at the entrance of the chamber, and at the exit of it are installed perforated trays for the distribution of granular material. 2. The device according to claim 1, characterized in that the chamber is cylindrical and mounted vertically or inclined to advance the material along the axis of the chamber. 3. The device according to claim 1, characterized in that the chamber is made of rectangular cross section and is located along the axis of the drum. 4. Device on PP. 1-3, characterized in that the liquid-on or gaseous component nozzle is installed inside the diffuser. Compiled by V. Zenkov Tehred I. VeresKorrektor L. Pilipenko Circulation 548 Subscription Editor A. Dolynich Order 289/8 VNIIPI State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035, Moscow, Zh-35, Raushsk nab. 4/5 Production and publishing combine “Patent, Uzhgorod, ul. Gagurin, 101 rig.1 srag.2 Compiled by V. Zenkov Tehred I. VeresKorrektor L. Pilipenko Circulation 548 Subscription iteta on inventions and openings at the State Committee for Science and Technology of the USSR