Buckwheat shelling and separating process

Abstract

The invention discloses a buckwheat shelling and separating process, comprising the following steps: first screening a mixed material containing a small part of buckwheat husk, buckwheat grains and unshelled buckwheat after shelling with a vibration classification screen, enabling oversize products on a lower layer of screen to enter a color sorter via an elevator for color sorting separation, wherein color sorting is carried out for three time in sequence, screening separated semi-product buckwheat grains with the vibration classification screen for classification to obtain high-quality buckwheat grain finished products; and uniformly mixing small-granular unshelled buckwheat obtained by first time and second time of color sorting with large-granular unshelled buckwheat intercepted by an upper layer of screen, carrying out cold and hot treatment, and then enabling the buckwheat to enter a husker in batches for secondary shelling. Finally, grain separation rate reaches 99.9%, secondary shelling rate reaches more than 95%, the purity of the buckwheat grains can reach more than 99.9%, incomplete grain quality is less than or equal to 1%, impurity rate is less than or equal to 0.10%, and broken grain rate is less than or equal to 1%; the buckwheat has bright and clean surface and obvious buckwheat fragrance; and the purposes of realizing high quality, high efficiency, high yield and large-scale grain separation operation after buckwheat shelling are achieved.

Description

technical field [0001] The invention relates to buckwheat processing, in particular to a buckwheat husking and separation process. 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 requirement...

AI Technical Summary

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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