RU191114U1 - DEVICE FOR GRAIN DRYING - Google Patents

Abstract

The utility model relates to agricultural machinery, in particular to devices for drying grain. The device for drying grain contains a casing, a loading hopper, an unloading window, heating elements, a fan, an air duct, a transporting working body made in multi-section in the form of a box with a stepped surface and the possibility of communicating vibrations to it. At the side walls of the casing between the edges of the upper and lower sections of the transporting working body at an angle to the vertical, not exceeding the angle of repose of grain, cooling columns are installed. The cooling columns are made in the form of pipes, inside of which perforated tape screws are installed. The diameter of the holes of the perforation of the tape screws does not exceed the minimum grain size. The utility model should provide an increase in the time of grain contact with the air flow supplied by the fan, improving grain cooling, which, in turn, provides the required quality of grain drying with its increased initial humidity without the need for repeated passage through the device. 3 ill.

Description

The utility model relates to agricultural machinery, in particular, to devices for drying grain.

A device for drying grain [Device for drying grain. - Patent RU 2672409. - Publ. 11/14/2018, Bull. No. 32] containing a casing of rectangular cross section, the outer surface of which is covered with a layer of heat-insulating material, a loading hopper, an unloading window, heating elements, a fan, an air duct, and a transporting working body made in the form of a box with a stepped surface and the possibility of informing him of vibrations. The transporting working body is made multi-sectional, and the sections are mounted in pairs one above the other with an offset of the lower transporting working body relative to the upper. The loading hopper is configured to release grain on two opposite sides. Heating elements are located under the transporting working body. The upper surface of the boxes is made of heat-conducting material. Air ducts are located between the sections of the transporting working body, and the open parts of the ducts are directed to the side walls of the casing from its inner side. The side walls of the casing are perforated.

The known device has the disadvantage of low quality of grain drying due to insufficient cooling of the grain after it passes through the upper sections of the transporting working body, which reduces the quality of drying.

The technical task of the utility model is improving the quality of grain drying.

The technical result is to increase the time of grain contact with the air flow supplied by the fan, improving grain cooling, which, in turn, provides the required quality of grain drying with its increased initial moisture content without the need for repeated passage through the device.

The technical result is achieved in that in a device for drying grain containing a casing of rectangular cross section, the outer surface of which is covered with a layer of heat insulating material, a loading hopper, an unloading window, heating elements, a fan, an air duct, a transporting working body, made in multi-section in the form of a box with a stepped surface and opportunity. messages to him of oscillations at the side walls of the casing between the edges of the upper and lower sections of the transporting working body at an angle to the vertical, not exceeding the angle of repose of grain, install cooling columns, which are made in the form of pipes. Perforated tape screws are installed inside the cooling columns. The diameter of the perforation holes does not exceed the minimum grain size.

In FIG. 1 shows a general view of a device for drying grain; FIG. 2 is the same, top view, in FIG. 3 - section of the cooling column according to A - A.

The device for drying grain includes a casing 1 of rectangular cross-section, the outer surface of which is covered with a layer of heat-insulating material 2, a loading hopper 3, an unloading window 4, heating elements 5, a fan 6, an air duct 7 and a transporting working element 8, made in multi-section, in the form of a box with a stepped surface and the ability to communicate oscillations to it. At the side walls of the casing 1 between the edges of the upper and lower sections of the transporting working body 8 at an angle to the vertical, not exceeding the angle of repose of grain, cooling columns 9 are installed, made in the form of pipes. Inside the cooling columns 9, perforated tape screws 10 are installed. The diameter of the holes of the tape screws 10 does not exceed the minimum grain size. The transporting working body 8 is equipped with a drive 11.

The device operates as follows. Turn on the heating elements 5 of the device. After reaching the required temperature of the surfaces of the sections of the transporting working body 8, turn on its drive 11. At the same time, turn on the fan 6. Then the grain is fed into the loading hopper 3, from where it is discharged on two opposite sides, entering the upper sections of the transporting working body 8 and moved to the sides casing 1. Contacting with the heated surfaces of the upper row of sections of the transporting working body 8, the grain also heats up, loses excess moisture. Then, the heated grain enters the cooling columns 9. Moving spiral downward along the perforated tape screws 11 of the cooling column 10, the grain is cooled by the air flow created by the fan 6, and loses moisture. Humidified air is discharged out through the upper perforated parts of the casing 1 above the cooling columns 9. After passing through the cooling columns 9, the cooled and partially dried grain enters the heated surfaces of the lower sections of the transporting working body 8, where it is reheated while moving in the direction of the discharge window 4. At the same time, the grain is dried to a conditioned humidity and removed from the device at the end of the last drying cycle through the discharge window 4.

When using grain of another culture, the temperature of the heating surfaces of the ducts of the sections of the transporting working body 8 is changed using the heating elements 5, the frequency and (or) the amplitude of the vibrations of the sections of the transporting working body 8 are changed, and the air flow in the duct 7 is reduced or increased, changing the speed fan 6.

The location at the side walls of the casing between the edges of the upper and lower sections of the transporting working body at an angle to the vertical, not exceeding the angle of repose of grain, cooling columns made in the form of pipes, installation of perforated tape screws inside the cooling columns, as well as making tape screws perforated with size holes, not exceeding the minimum grain size, provides the movement of grain on the surface of perforated tape screws spiral downward, increasing the time ontact with the feed grain fan air flow, improving the cooling of grain which, in turn, provides the desired drying grain quality during its initial elevated humidity without the need for re-transmission through the device.

Claims (1)

A device for drying grain containing a casing of rectangular cross section, the outer surface of which is covered with a layer of heat-insulating material, a loading hopper, an unloading window, heating elements, a fan, an air duct, a transporting working body made in a multi-sectional form in the form of a box with a stepped surface and capability. messages to him of vibrations, characterized in that at the side walls of the casing between the edges of the upper and lower sections of the transporting working body at an angle to the vertical, not exceeding the angle of repose of grain, cooling columns are installed, made in the form of pipes, inside of which perforated tape screws are installed, and the diameter of the perforation holes does not exceed the minimum grain size.

Images