RU105726U1 - SHAFT DRYING UNIT OF BULK MATERIALS - Google Patents

Abstract

 A shaft dryer for bulk materials containing a feed hopper, a drying chamber, a dispenser for loading bulk material located between the feed hopper and the drying chamber, characterized in that the drying chamber consists of two or more rectangular channels made of Teflon mesh located in the resonator chamber on which two magnetrons with waveguides and a vacuum pump are installed, the installation contains a dispenser for unloading bulk material from the drying chamber, a drying chamber, a discharge chamber fan and unloading device.

Description

The utility model relates to agricultural machinery and food industry, in particular to the drying and heat treatment of crops.

From the description of the patent [Patent No. 40448, IPC 7 F26B 3/347, 2003 (prototype).], There is a well-known shaft grain dryer containing a drying chamber made in the form of a cylinder and mounted vertically, a grain loading hopper mounted above the drying chamber, a dispenser grain installed between the grain loading hopper and the drying chamber, the grain unloading hopper installed under the drying chamber, the drying chamber is divided into zones of grain processing by ultraviolet radiation, removal of the spent drying agent from the drying chamber, grain processing microwave energy and pumping a drying agent.

The disadvantages of this installation is the uneven heating of grain in the volume of the drying chamber, the high energy costs for heating and transportation of the drying agent.

The problem to which the utility model is directed is to ensure uniform heating of grain in the volume of the drying chamber, reducing energy consumption for drying and shortening the drying time.

The problem is solved in that the shaft drying installation of bulk materials contains a feed hopper, a dispenser for loading bulk material, located between the feed hopper and the drying chamber, consisting of 2 or more channels of a rectangular shape with a thickness of 20 mm and a width of 1000 mm, located from each other at a distance of 30 mm and made of Teflon mesh located inside the resonator chamber, on which there are 2 magnetrons with waveguides and a vacuum pump, a dispenser for unloading bulk material from the drying chamber into the drying chamber, a blower fan and an unloading device.

Figure 1 shows the design of the claimed shaft drying installation of bulk materials.

A shaft drying installation of bulk materials includes: a loading hopper 1, a drying chamber 3, consisting of 2 or more rectangular channels made of Teflon mesh, a bulk material loading batcher 2 located between the loading hopper 1 and the drying chamber 3, a resonator chamber 5 on which 2 magnetrons with waveguides 4 and a vacuum pump 10 are installed, a dispenser 6 for unloading bulk material from the drying chamber 5 into the drying chamber 8, an injection fan 7 and an unloading device 9.

A shaft dryer for bulk materials can operate in batch mode and in line mode.

When working in the batch mode, the bulk material is loaded into the hopper 1 of the dryer and through the dispenser 2 it enters the drying chamber 3. The magnetrons 4 are turned on and the material is exposed to microwave electromagnetic radiation, while a vacuum pump 10 is created in the resonator chamber 5, which helps lower the moisture evaporation temperature material and accelerate the process of moisture removal. After drying, the material through the dispenser 6 is discharged into the drying chamber 8, where it is ventilated by external air using a blower fan 7.

When operating in flow mode, the bulk material is loaded into the hopper 1 of the dryer and passing through the dispenser 2 is moved under its own weight along the drying chamber 3. Passing through the drying chamber 3, the material is subjected to microwave heating, a vacuum is created in the resonator chamber 5 by a partial vacuum and released moisture is removed from the material, then the material enters the drying chamber 8. In the drying chamber 8, the material is subjected to additional convective drying with warm air, which is taken from 4 netronov fan 7.

The proposed design of the drying chamber allows you to evenly dry the processed material.

The combined use of the energy of electromagnetic radiation from the microwave range and vacuum allows you to reduce the drying time and reduce energy consumption.

Using the heat released during cooling of the magnetrons to dry the material avoids the additional costs of heating and circulating the drying agent, and also increases the efficiency installation.

This installation can be used in agriculture, food and chemical industries, pharmaceuticals for drying various bulk materials.

The unit can be used as a microwave stimulator and seed disinfectant before sowing, as well as for the preparation and heat treatment of animal and bird feeds.

Claims (1)

A shaft dryer for bulk materials containing a feed hopper, a drying chamber, a dispenser for loading bulk material located between the feed hopper and the drying chamber, characterized in that the drying chamber consists of two or more rectangular channels made of Teflon mesh located in the resonator chamber on which two magnetrons with waveguides and a vacuum pump are installed, the installation contains a dispenser for unloading bulk material from the drying chamber, a drying chamber, a discharge chamber fan and unloading device.