A sorting and screening device for rice hull removal and dust removal

Abstract

The invention discloses a sorting and screening device for rice dehulling, dust removal and selection, which comprises an outer shell, a relatively rotatable inner shell arranged inside the outer shell, a dust suction port and a feeding port arranged above the outer shell, a material receiving box, a bracket and a driving force. Assemblies, compared with the prior art, after the inner casing rotates in the present invention, its outer material blocking mechanism blocks, squeezes and throws the falling rice, breaks the outer casing, and the broken outer casing is discharged from the dust suction port, and the rotating motor is controlled to reverse After counterclockwise rotation, the arc-shaped plate touches the lower limit end to open the opening, and the rice enters the inner shell under the resistance of the inclined plate, and the broken rice, rice husk, rice bran and other sundries produced by the first extrusion remain at the bottom. Open the bottom discharge port to collect. After the rice enters the inner shell, the rice in it is sprinkled for the second time with the help of the rotating shaft inside. The small particles such as dust can be discharged with the filter air for secondary filtration, and the rotating motor is turned off. The rice is discharged from the opening into the receiving box to complete the collection work.

Description

technical field [0001] The invention relates to the technical field of rice processing, in particular to a rice husk-removing, dust-removing, fine-selecting and screening device. Background technique [0002] Rice is the finished product of paddy after cleaning, husking, rice milling, finishing and other processes. The cleaning process is to use appropriate equipment, through appropriate technological processes and proper operation methods, to remove all kinds of impurities mixed in the rice, so as to improve the quality of the finished rice, and to use magnets to remove iron nails and iron filings in the rice. To ensure production safety. The hulling process is to use a rubber roller huller or an emery huller to remove the chaff of the rice and separate the chaff from the brown rice. The rice milling process is to use a rice mill to grind and rub the brown rice to separate the cortex and endosperm, and then to brush the rice, remove the bran, remove the crushing, and dry ...

AI Technical Summary

Problems solved by technology

The rice milling process is to use a rice mill to grind and rub the brown rice to separate the cortex and endosperm, and then to brush the rice, remove the bran, remove the crushing, and dry the rice. After mixing together, it is not easy to distinguish them, so that the desired rice can be obtained. Grade rice, but dust, broken rice, etc. are easily produced during the rice milling process. Broken rice will affect the grade of the final rice, and dust will greatly affect the health of workers

[0003] At present, most of the rice is husked by using a rice thresher. During the husking process, a large amount of rice husk, rice bran and rice will be mixed together, so it needs to be fully sieved, sieved Finally, clean rice is obtained, and most of the existing rice threshers use the sieve plate to screen the hulled rice, but the screening effect is poor, and the screening efficiency is low, and it needs to be screened multiple times, and after screening Afterwards, it is easy to cause the separated chaff to fly into the rice again, thereby increasing the number of screening and separation in the rice processing process, increasing the cost and workload of rice processing, and at the same time, it will cause the surrounding chaff dust to float and pollute. environment, making the working environment worse, affecting the physical health of the operator

[0004] Existing machinery needs to use multiple mechanical devices to process freshly rolled rice, such as screening and dust removal, and it can only be completed after multiple steps, which is not only time-consuming, but also manpower and material resources. A certain dust removal method will lead to dust flying in the processing site, which will seriously affect the environment of the processing site, and it will be harmful to the health of production personnel in the long run.

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