Buckwheat grain processing technology

Abstract

The invention discloses a buckwheat grain processing technology. Unshelled mixed materials containing a small part of buckwheat shells, buckwheat grains and shelled buckwheat are screened through a vibration classification screen firstly, oversize products on a lower screen enter a color selector through an elevator to be subjected to color sorting separation, three times of color sorting is sequentially carried out, separated-out semi-finished buckwheat grains are screened and classified through the vibration classification screen, and high-quality finished buckwheat grains are obtained. Small grain type shelled buckwheat obtained through the first time of color sorting and the second time of color sorting and large grain type shelled buckwheat intercepted by an upper screen are evenly mixed and subjected to cold and heat treatment to enter a huller in batches to be subjected to secondary unshelling. Finally, the material grain separation rate reaches 99.9%, the secondary unshelling rate reaches more than 95%, the purity of the buckwheat grains can reach more than 99.9%, the unsound grain mass is smaller than or equal to 1%, the proportion of impurities is smaller than or equal to 0.10%, and the proportion of broken grains is smaller than or equal to 1%. The surface is bright and clean, the obvious buckwheat fragrance is achieved, and the purposes that after buckwheat unshelling, the material grain separation quality and efficiency are high, the yield is high, and a large scale is achieved are achieved.

Description

technical field [0001] The invention relates to buckwheat processing, in particular to a buckwheat rice processing technology. Background technique [0002] Buckwheat belongs to the dicotyledonous Polygonaceae, buckwheat genus, its growth period is short, suitable for growth in cold climate environment, commonly known as jade wheat, triangle wheat, rye wheat, is a very ideal miscellaneous grain crops. Because of its unique nutritional value, it has been paid more and more attention by people. However, based on the characteristics of buckwheat such as small size, strong shell toughness, large kernel brittleness, and small gap between kernel and shell, coupled with the limitations and imperfections of the mechanical properties of the existing buckwheat shelling machine, the existing shelling machine is used for its It is very difficult to shell the buckwheat. The chaff cannot be completely removed after the buckwheat is shelled by the sheller. According to the requirements of...

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Problems solved by technology

[0004] The technical problem solved by the present invention is to overcome the defects of the separation of shelled buckwheat and shelled buckwheat and the low secondary shelling rate in the existing buckwheat processing process, and the buckwheat contains a small part of buckwheat husk, buckwheat and The mixture of hulled buckwheat is firstly screened through the vibrating grading sieve A equipped with upper and lower screens, using the particle size difference between hulled buckwheat and buckwheat and automatic grading characteristics, with the help of a screen with suitable mesh and movement form For the first paddy separation, the buckwheat husks are sent to the collection bin of the air net system by the suction type vertical suction separator; The material is broken buckwheat and dust, and enters the collection bin; the material on the lower screen is mainly buckwheat and some small-grained buckwheat with shells, and this part of the mixed material enters the color sorter through the elevator for color separation and separation. The shelled small-grained buckwheat is mixed with the upper sieve (large-grained shelled buckwheat) and then enters the shelling machine for secondary shelling. The separated qualified pure buckwheat continues to be used in two layers. The vibrating grading sieve B of the sieve is screened, and the broken buckwheat and light impurities are separated again to produce high-purity and high-quality buckwheat products

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