Method for removing grains contaminated by fungi and their toxins in grains using a gravity sorter

Abstract

The invention discloses a method for removing grains polluted by funguses and toxins thereof from grains by a gravity separator. The method comprises the following steps: grains to be separated are fed from a feed hopper, and then fall on a screen surface; a transmission system and an air blower are started, so that the grains are layered under the vibrating effect of a vibrating screen and the wind effect of the air blower to form a strip-shaped material layer perpendicular to a separating plate, and the strip-shaped material layer consists of a polluted grain layer, a mixture layer and a plump grain layer in sequence in the direction from the vertical edge to the inclined edge of the screen surface; and the grains on the polluted grain layer are discharged through a polluted grain outlet, the grains on the mixture layer are discharged through a mixture discharge port, and the grains on the plump grain layer are discharged through a plump grain outlet, so that the grains polluted by the funguses and the toxins thereof are removed from the grains. The method can be used for removing the grains polluted by the funguses and the toxins thereof from the grains.

Description

technical field [0001] The invention relates to a method for removing grains polluted by fungi and their toxins in grains by using a gravity sorter. Background technique [0002] Grains are easily contaminated by fungi during the process of growth, harvesting, and storage. When the conditions are suitable, they can rapidly grow and multiply in the grains, resulting in deterioration of grain quality. What's more serious is that fungi that contaminate grains can produce various mycotoxins, which can enter the food chain through contaminated grains, showing carcinogenicity, genotoxicity, and teratogenicity to humans and animals, causing nephrotoxicity, Hepatotoxicity, reproductive abnormalities, and immune response suppression. Therefore, countries around the world have established complete limits for mycotoxins. Therefore, it is extremely important to promptly remove grains with excessive fungi and their toxins from entering the food chain. [0003] Affected by fungi and thei...

AI Technical Summary

Problems solved by technology

During the sorting process, the grains on the sieve surface are diffused as a whole. In order to remove the grains contaminated by fungi and their toxins as much as possible, and make them enter the light-weight terminal hopper, it is necessary to repeatedly adjust the inclination angle of the working table or the vibration frequency or amplitude of the table or the bottom Fan air volume, etc., but the contaminated grains are always distributed in a certain area at the light end of the discharge side, and the removal effect is not ideal

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