RU2413912C1 - Grain drying device - Google Patents

Abstract

FIELD: agriculture. ^ SUBSTANCE: device for grain drying includes jacket of rectangular section, loading hopper, discharge window, transporting working element installed inside jacket and arranged in the form of continuous chain with scrapers, heating elements arranged between loading hopper and discharge window, and also cooling device, comprising fan and air duct. Upper part of jacket from loading hopper is arranged as perforated. Inlet end of air duct is arranged at the equal distance from loading hopper and discharging window above perforated part of jacket. A plate is installed horizontally inside jacket. Transporting working element is arranged in the form of continuous chain with scrapers. At lower side of plate there are heating elements, besides, upper branch of chain with scrapers rests against plate. Surface of jacket is coated with a layer of heat-insulation material. ^ EFFECT: device has simple design and makes it possible to increase efficiency of grain drying process, and also quality of finished product. ^ 1 dwg

Description

The invention relates to agricultural machinery, in particular to a device for drying grain.

A device for drying grain [1] is known, comprising a cylindrical casing, a loading hopper, an unloading window, a transporting working element coaxially mounted inside the casing for rotation, heating elements and a cooling device, which consists of a fan and an air duct connected to the internal cavity of the casing unloading window. The outer surface of the casing is covered with a layer of heat-insulating material. The transporting working body is made in the form of a screw with perforated turns, the diameter of the perforation does not exceed the minimum grain size. In this case, the casing is made integral, and its components are divided among themselves by rings made of heat-insulating material. Heating elements are placed on the outer surface of the casing under a layer of heat-insulating material between the loading hopper and the discharge window with the possibility of individually controlling the heating temperature of each of the sections of the casing. Each component of the casing is equipped with an individual heating element, and the end surface of the casing from the side of the loading hopper is perforated.

The known device has disadvantages, which include low productivity, design complexity, and also not complete removal of moisture from the drying zone.

The purpose of the invention is to increase the productivity of the device, simplifying the design and improving the quality of the finished product.

This goal is achieved by the fact that the casing is of rectangular cross-section. The transporting working body is made in the form of an endless chain with scrapers, a plate is installed horizontally inside the casing, on which the upper branch of the chain with scrapers rests. On the underside of the plate are heating elements. The upper part of the casing from the loading hopper to the discharge window is perforated, and the inlet end of the duct is placed at an equal distance from the loading hopper and the discharge window above the upper part of the casing.

The drawing shows a General view of the device.

The device for drying grain consists of a casing 1 of rectangular cross section, covered with a layer of heat-insulating material 2, a loading hopper 3, an unloading window 4 installed inside the casing 1 of the transporting working body 5, heating elements 6, and also a cooling device consisting of a fan 7 and an air duct 8 The upper part of the casing 1 from the loading hopper 3 to the discharge window 4 is perforated. The inlet end of the duct 8 is located at an equal distance from the feed hopper 3 and the discharge window 4 above the perforated part of the casing 1. The transporting working body 5 is made in the form of an endless chain with scrapers. The heating elements 6 are placed between the loading hopper 3 and the discharge window 4. Inside the casing 1, a plate 9 is horizontally mounted. The heating elements 6 are located on the lower side of the plate 9, and the upper chain branch with scrapers rests on the plate 9.

The device operates as follows. They turn on the heating elements 6. After reaching the required temperature, the plate 9 feeds grain into the loading hopper 3, from where it enters the plate 9, through which the transporting working body 5 moves to the discharge window 4. In contact with the heated surface of the plate 9, the grain also heats up, loses excess moisture, which in the form of steam is sucked out through the perforated part of the casing, the duct 8 by the fan 7. Dry grain is removed from the device through the discharge window 4.

Simplification of the design of the device, increasing its productivity and improving the quality of the finished product is achieved through the manufacture of a casing of rectangular cross section and placement inside the casing of a transporting working body 5, made in the form of an endless chain with scrapers. The required temperature for heating the grain is ensured when the grain is moved by the upper branch of the chain with scrapers along a plate horizontally installed inside the casing. In turn, the set heating temperature of the plate is provided by the heating elements located on its lower side. Complete removal of moisture from the drying zone is due to the fact that the upper part of the casing from the loading hopper is perforated, and the duct is located at an equal distance from the loading hopper and the discharge window above the perforated part of the casing.

Information sources

1. Device for drying grain. - Patent RU 2323580. - Publ. 05/10/2008, Bull. No. 13.

Claims (1)

A device for drying grain containing a casing, the surface of which is covered with a layer of heat insulating material, a transporting working element installed inside the casing, a loading hopper, an unloading window, heating elements located between the loading hopper and the unloading window, as well as a cooling device consisting of a fan and an air duct, characterized in that the casing is made of rectangular cross section, the transporting working body is made in the form of an endless chain with scrapers, horizontally installed inside the casing on the plate, on the lower side of which there are heating elements, the upper branch of the chain with scrapers resting on the plate, the upper part of the casing from the loading hopper to the discharge window is perforated, and the inlet end of the duct is installed at an equal distance from the loading hopper and discharge window above the perforated part casing.