RU2436630C1 - Grain drying device - Google Patents

Abstract

FIELD: technological processes. ^ SUBSTANCE: invention is related to agricultural machine-building, in particular, to grain drying devices. The device comprises a jacket, the surface of which is coated with a layer of a heat insulation material, a transporting working tool installed inside the jacket, a loading hopper, a discharge window, heating elements arranged between a loading hopper and a discharge window, and also a cooling device comprising a fan and an air duct. The jacket is made with a rectangular cross section, and the transporting working tool in the form of a continuous chain with scrapers. Scrapers are made as serially installed symmetrical relative to a conveyor of V-shaped plates. Top of angle in one of the scrapers is directed along with the conveyor motion, and in the other one - oppositely. In the middle part of the scraper with the top angle directed oppositely to direction of the conveyor motion, and also those parts that are most distanced from each other in the scraper, the angle top of which is directed along the conveyor motion, there are holes made of rectangular shape. Inside the jacket there is a plate installed horizontally, and the lower side of the plate there are heating elements installed. The upper part of the chain with scrapers rests against the plate. The air duct is installed above the plate at the equal distance from the loading hopper and the discharge window. ^ EFFECT: using invention allows to increase finished product quality. ^ 2 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, high metal consumption and uneven heating of grain.

The purpose of the invention is to increase the productivity of the device, reducing the metal structure 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 performed in the form of an endless chain with scrapers. Scrapers are made in the form of V-shaped plates, which are installed in series, and symmetrical about the axis of the conveyor. The top of one of the scrapers is directed in the direction of movement of the conveyor, and the other against. In the middle part of the scraper with the apex of the angle directed against the direction of movement of the conveyor, and in the parts of the scraper most distant from each other, the apex of which is directed in the direction of movement of the conveyor, rectangular holes are made. Inside the casing, a plate is installed horizontally. The upper branch of the chain with scrapers is carried out resting on the plate. On the underside of the plate are heating elements. An air duct is installed above the plate at an equal distance from the loading hopper and the discharge window.

Figure 1 shows a General view of the device; figure 2 is a section along a - a; figure 3 is a section along B - B, and figure 4 is a section along B - C.

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 transporting working body 5 is made in the form of an endless chain with scrapers, and the scrapers are made in the form of V-shaped plates installed in series and symmetrical with respect to the conveyor axis. The top of one of the scrapers is directed in the direction of movement of the conveyor, and the other is against. In the middle part of the scraper with the apex of the angle directed against the direction of movement of the conveyor, and in the parts of the scraper most distant from each other, the apex of which is directed in the direction of movement of the conveyor, rectangular holes are made. The heating elements 6 are placed between the loading hopper 3 and the discharge window 4. A plate 9 is horizontally mounted inside the casing 1. The heating elements 6 are located on the lower side of the plate 9, and the upper branch of the chain with scrapers rests on the plate 9. The duct 8 is located equally above the plate 9 distance from loading hopper 3 and discharge window 4.

The device operates as follows. Turn on the heating elements 6. After reaching the required temperature of the plate 9, the grain is fed into the loading hopper 3, from where it enters the plate 9, through which it is transported by the transporting working body 5 to the discharge window 4.

Grain during transportation gradually moves to the center of the scraper, the apex of which is directed against the direction of movement of the conveyor, passes through the hole. Further, the grain is captured by a scraper, the apex of which is directed in the direction of movement of the conveyor and, without stopping the movement to the unloading window 4, passes through holes in the parts of the scraper that are most distant from each other.

Contacting with the heated surface of the plate 9, the grain also heats up, loses excess moisture, which is blown out by the fan 7 through the duct 8 and the discharge window 4. Dry grain is removed from the device through the discharge window 4.

Improving the productivity of the device, reducing the metal consumption of the structure and improving the quality of the finished product is achieved by manufacturing 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 design features of the scrapers provide uniform grain intake from the loading hopper, as well as its rotation when moving along the plate and, as a result, uniform heating.

The required temperature for heating the grain is provided when the grain is moved by the upper branch of the chain with scrapers at a given speed 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. The location of the duct above the plate at an equal distance from the loading hopper and the discharge window also improves the quality of the finished product due to a more complete removal of evaporated moisture from the device.

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 placed 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, and the scrapers are made in the form after It is necessary to install V-shaped plates symmetrical with respect to the conveyor axis, with the apex of the angle of one of the scrapers directed in the direction of movement of the conveyor and the other opposite, in the middle part of the scraper with the apex of the angle directed against the direction of movement of the conveyor, as well as those most distant from each other parts of the scraper, the apex of which is directed in the direction of conveyor movement, rectangular holes are made, a plate is horizontally installed inside the casing, on the bottom side of the plate heating elements are installed, the upper branch of the chain with scrapers rests on the plate, and the duct is installed above the plate at an equal distance from the loading hopper and the discharge window.

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