A kind of buckwheat processing separation technology

Abstract

The invention discloses a buckwheat processing and separation process. The buckwheat processing and separation process comprises the following steps: firstly screening a hulled mixed material containing a small part of buckwheat husks, buckwheat grains and hull-carried buckwheat by using a vibration classification screen; sending the material on the lower layer screen into a color selector for color separation by using a lifter; sequentially performing three times of color separation; screening and classifying the separated semi-finished product buckwheat grains by using the vibration classification screen to obtain high-quality finished product buckwheat grains; uniformly mixing small-grain type hull-carried buckwheat which is obtained after the first and second times of color separation with large-grain type hull-carried buckwheat which is retained on the upper layer screen; performing cold treatment and thermal treatment; performing secondary hulling on the buckwheat in batches in a hulling machine, wherein the final material particle separation rate is as high as 99.9%; the secondary hulling rate is above 95%; the purity of the buckwheat grains is above 99.9%; the mass of imperfect particles is smaller than or equal to 1%; the percent of impurities is smaller than or equal to 0.10%; the percent of crushed buckwheat grains is smaller than or equal to 1%; the obtained product is bright in surface and clean and has obvious buckwheat flavor; the aims of high separation quality, high separation efficiency, high yield and large-scale treatment of material particles after the buckwheat is hulled are realized.

Description

technical field [0001] The invention relates to buckwheat processing, in particular to a buckwheat processing 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 requirem...

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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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