A buckwheat shelling process

Abstract

The invention discloses a buckwheat husking technology which comprises the steps that a mixture containing few buckwheat husks, buckwheat kernels and buckwheat with husks after husking is screened by a vibration classification screen; an oversize product of a lower layer screen mesh enters a color separator through an elevator to be subjected to color separation for three times sequentially; separated semifinished buckwheat kernels are subjected to screening classification by the vibration classification screen, and high-quality finished buckwheat kernels are obtained; and the small buckwheat with husks after the first-time color separation and the small buckwheat with husks after the second-time color separation are uniformly mixed with the large buckwheat with husks retained by an upper layer screen mesh to form a mixture, and the mixture is subjected to freezing and heating treatment, and then enters a husker in batches to be subjected to secondary husking. A final buckwheat kernel separation rate reaches 99.9%; a secondary husking rate reaches above 95%; the purity of the buckwheat kernels can reach above 99.9%; the mass of unsound kernels is less than or equal to 1%; the mass of impurities is less than or equal to 0.10%; the mass of crushed kernels is less than or equal to 1%; the buckwheat kernels have bright and clean surfaces, and obvious buckwheat fragrance; and the purpose of high-quality, high-efficiency, high-yield and scale buckwheat kernel separation after buckwheat husking is realized.

Description

technical field [0001] The invention relates to buckwheat processing, in particular to a buckwheat shelling 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 requirements of the proce...

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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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