High polished buckwheat ratio processing process of buckwheat

Abstract

The invention discloses a high polished buckwheat ratio processing process of buckwheat. The process is characterized in that unshelled mixtures containing few buckwheat husks, buckwheat and buckwheat with shells are screened through a vibration classification screen; oversize materials on a lower screen cloth are fed through a lifter into a color sorter to be subjected to color sorting and separating; the oversize materials are sequentially subjected to color selecting for three times; the separated semi-finished products of buckwheat are screened and classified through the vibration classification screen so as to obtain high-quality finished products of buckwheat; small granular buckwheat with shells, obtained from the first color sorting and the second color sorting, can be uniformly mixed with large granular buckwheat with shells, wherein the large granular buckwheat with shells is intercepted by an upper screen cloth; the mixtures are subjected to cold and heat treatment and then fed by batch into a huller to be unshelled for the second time; the final separation rate of the granules reaches 99.9%, and the secondary unshelling ratio is more than 95%; the purity of the buckwheat is 99.9% or more; the mass of unsound kernels is not greater than 1%; the impurities are not greater than 0.10%; the broken buckwheat is not greater than 1%; the buckwheat has a bright surface and is clean, and the flavor of buckwheat is obvious; the purposes of high-quality and high-efficiency granule separation of unshelled buckwheat, high output and large scale can be achieved.

Description

technical field [0001] The invention relates to buckwheat processing, in particular to a processing technology of buckwheat with high polished rice rate. 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. Accor...

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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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