Material three-stage screening cylinder

Abstract

The invention discloses a material three-level screening cylinder. The screening cylinder comprises a supporting shell, an outer sleeve and an inner sleeve; the inner sleeve is horizontally arranged in the outer sleeve, the two ends of the inner sleeve are fixedly connected with a supporting rod, a fixed screen and a rotary screen are arranged in the inner sleeve at intervals along the radial direction of the inner sleeve so as to divide the space in the inner sleeve into a first screening cavity, a second screening cavity, and a third screening cavity in sequence, wherein the first screeningcavity is located between the fixed screen and the side wall of the supporting shell, the second screening cavity is located between the fixed screen and the rotary screen, and the third screening cavity is located between the rotary screen and the side wall of the supporting shell; and the fixed screen is arranged to be parallel to the supporting rod, and when the fixed screen is horizontally arranged, an arc-shaped side wall of the first screening cavity is obliquely arranged to form an upper materials guiding part. According to the screening cylinder, the feeding of the inner sleeve is realized while the materials are classified in a two-level and three-kind mode in a limited space and are guided out separately.

Description

technical field [0001] The invention relates to the technical field of seed screening equipment. More specifically, the present invention relates to a material three-stage screening drum. Background technique [0002] Seeds need to be screened and sorted after collection. Screening and sorting refers to sorting seeds according to different sizes, so as to perform different treatments for seeds of different sizes. Existing seed classification methods include air selection, water selection, or separation using multi-channel sieve cylinders. Among them, because seeds of different sizes have different gravity, the working principle of water selection is to use substances in a certain density of water or organic solution. Stratification occurs due to different buoyancy. The working principle of winnowing is to use the wind force to classify seeds of different gravity. For relatively high-quality seeds, the above-mentioned winnowing and water sorting methods are not applicable, a...

AI Technical Summary

Problems solved by technology

Existing seed classification methods include air selection, water selection, or separation using multi-channel sieve cylinders. Among them, because seeds of different sizes have different gravity, the working principle of water selection is to use substances in a certain density of water or organic solution. Stratification occurs due to different buoyancy. The working principle of winnowing is to use the wind force to classify seeds of different gravity. For relatively high-quality seeds, the above-mentioned winnowing and water sorting methods are not applicable, and sieve drums are usually used. Separation, multi-cylinder classification and screening will cause the problem of low space utilization and cumbersome operation

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