RU2705024C1 - Device for grain drying - Google Patents

Abstract

FIELD: agriculture; machine building.

SUBSTANCE: invention relates to agricultural machine building, in particular, to devices for grain drying. Device for drying grain comprises a casing, surface of which is coated with a layer of heat-insulating material, loading hopper, unloading window, heating elements, a fan, an air duct, a transporting working element installed inside the casing and made multisectional in the form of a box with a stepped surface and possibility of its transmission to vibrations. Sections of transporting working element are arranged in series one after another in one horizontal plane. Between the sections of the transporting working element there is a U-shaped pipe of rectangular section enveloping the rear part of odd sections of the conveying working element, the rounded part of which is directed upwards. Width of U-shaped pipe is equal to width of transporting working element. Air duct is connected to the lower front part of the U-shaped pipe. External rear part of U-shaped pipe is made perforated. Diameter of perforation holes does not exceed minimum grain size.

EFFECT: higher quality of grain drying.

1 cl, 2 dwg

Description

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

A device for drying grain [Device for drying grain. - Patent RU 181622. - Publ. 07/19/2018, Bull. No. 20] 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 element made in the form of a box with a stepped surface and the possibility of communicating vibrations to it. The transporting working body is made multi-sectional, and the sections are arranged sequentially one after another so that each subsequent section is set lower than the previous one. Between the sections there is a pitched board made perforated, with the possibility of adjusting the angle of its inclination. An air duct is installed on the underside of the ramp board. The upper part of the casing located above the pitched board is perforated. The size of the holes of the ramp does not exceed the minimum grain size.

The known device has the disadvantage of low quality drying of grain due to poor cooling of grain after passing through each section of the transporting working body, which reduces the quality of drying.

The technical result of the invention is improving the quality of drying grain.

The technical result is achieved in that the sections of the transporting working body are arranged sequentially one after another in one horizontal plane. Between the sections of the transporting working body, a U-shaped pipe of rectangular cross section, the rounded part of which is directed upward, is installed covering the back of the odd sections of the transporting working body. U-shaped pipe perform a width equal to the width of the transporting working body. The duct is connected to the lower front of the U-shaped pipe. The outer back of the U-shaped pipe is perforated. The diameter of the perforation holes is performed not exceeding the minimum grain size.

In FIG. 1 shows a general view of a device for drying grain; FIG. 2 - the same, top view.

The device for drying grain includes a casing 1, the surface of which is covered with a layer of heat insulating material 2, a loading hopper 3, an unloading window 4, a heating element 5, a fan 6, an air duct 7 and a transporting working element 8 installed inside the casing 1, made in multi-section in the form of a box with a step surface and the ability to inform him of vibrations. Between the sections of the transporting working body 8 is installed covering the back of the odd sections of the transporting working body 8 U-shaped pipe 9 of rectangular cross section, the rounded part of which is directed upwards. The width of the U-shaped pipe 9 is equal to the width of the transporting working member 8. The air duct 7 is connected to the lower front of the U-shaped pipe 9. The outer rear of the U-shaped pipe 9 is perforated, while the diameter of the perforation holes does not exceed the minimum grain size. The transporting working body 8 is equipped with a drive 10.

A device for drying grain works as follows. Preliminarily turn on the heating elements 5. After reaching the required temperature of the surfaces of the sections of the transporting working body 8, turn on its drive 10. At the same time, turn on the fan 6. Then the grain is fed into the feed hopper 3, from where it enters the first section of the transporting working body 8 and moves to the unloading side windows 4. Contacting with the heated surface of the first section of the transporting working body 8, the grain also heats up, loses excess moisture. Then, the heated grain from the first section of the transporting working body 8 enters the U-shaped pipe 9. Under the action of the air stream created by the fan 6, which is supplied through the air duct 7, at a flow speed exceeding the grain flow speed, the grain rises up the front of the U-shaped pipe 9, while cooling and losing excess moisture. Next, the grain enters the back of the U-shaped pipe 9, where moistened air is removed outward through its perforation. At the same time, in the rear part of the U-shaped pipe 9, the air flow rate decreases, and the cooled and partially dried grain under the action of gravity enters the heated surface of the second section of the transporting working body 8, where it is reheated during movement in the direction of the discharge window 4. the grain is dried to normal humidity and at the end of the last drying cycle is removed from the device 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 implementation of the transporting working body is multisectional, the arrangement of the sections of the transporting working body sequentially in the same horizontal plane, the location between the sections of the transporting working body covering the back of the odd sections of the transporting working body of a U-shaped pipe of rectangular cross section, the rounded part of which is directed upward, and the width U -shaped pipe is equal to the width of the transporting working body, the connection of the duct with the lower front part U- braznoy pipe execution outer rear U-shaped tubes perforated with perforations the diameter no greater than the minimum grain size 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, the 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 element installed inside the casing, made in a multi-section form in the form of a box with a stepped surface and the ability to communicate oscillations to it, characterized the fact that the sections of the transporting working body are arranged sequentially one after another in the same horizontal plane, transporting between the sections of the working body, the U-shaped pipe of rectangular cross section, the rounded part of which is directed upward, covering the back of the odd sections of the transporting working body, is installed, the width of the U-shaped pipe being equal to the width of the transporting working body, the duct is connected to the lower front part of the U-shaped pipe, and the outer the back of the U-shaped pipe is perforated, and the diameter of the perforation holes does not exceed the minimum grain size.

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