A granular material rotating down slide pipe

Abstract

The invention belongs to the technical field of particle material sorting, and particularly relates to an articulated chute for rotary downward sliding of particle materials. The integral articulated chute (1) is of a straight round pipe structure with equal diameter, and sequentially comprises an attitude adjusting section (2), a turning section (3) and a guide section (4), wherein the attitude adjusting section (2) is a U-shaped groove (5) with a smooth inner wall; a plurality of spiral guide grooves (6) which are peripherally distributed are formed in the inner wall of the turning section (3), wherein the screw pitches of the spiral guide grooves (6) are decreased gradually; the guide section (4) is a round pipe with a smooth inner wall; the articulated chute (1) is arranged obliquely, the attitude adjusting section (2) is arranged at the upper part, and the U-shaped groove (5) is opened upwards. The inner wall of the articulated chute is provided with the plurality of spiral guide grooves with variable screw pitches, the integral translation motion of the particle materials in the turning section is gradually converted into the motion state with the combination of integral translation motion and auto-rotation, so that an imaging system arranged at an outlet of the articulated chute can be used for capturing more surface information of the particle materials within a relatively short falling distance, and the sorting accuracy degree according to the material surface information can be improved.

Description

Technical field [0001] The invention belongs to the technical category of granular material sorting, and specifically relates to a rotary slide pipe for granular materials. Background technique [0002] The surface information such as the color and shape of grains and other granular materials can directly or indirectly reflect the quality of the materials. Therefore, sorting and grading based on the surface information of the granular materials is a commonly used method. [0003] At present, the widely used multi-channel grain color sorter is a typical equipment for sorting according to the surface information of granular materials. When sorting, each grain particle enters the U-shaped inclined chute and then lined up to slide downward. When passing through the background plate, if the color difference between the surface of the grain particles and the background plate exceeds the calibrated value, the sensor element can convert the signal difference into an execution command, and...

AI Technical Summary

Problems solved by technology

However, the obtained image still has a large distortion, and the image in the mirror needs to be geometrically corrected. When the area of ​​the characteristic area on the material surface is used for sorting, the classification accuracy is still not high

[0007] In other existing technologies, for materials with large size and regular shape, structures such as rotating rollers are often used to increase the rotation of the material relative to the imaging system, and to obtain as much as possible all and true information on the surface of the material through multiple imaging; for The surface quality classification of small-sized and huge-quantity granular materials directly adopts the above-mentioned technologies and methods, which is not only complicated and bulky in equipment, but also high in cost and poor in practicability

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