Dry-process blocky-material sorting device based on terahertz imaging

Abstract

The invention relates to blocky-material sorting equipment and particularly relates to a dry-process blocky-material sorting device based on terahertz imaging. The dry-process blocky-material sortingdevice comprises a material conveying system, a detection and recognition system, a control terminal, an execution system and a receiving bin, wherein the detection and recognition system comprises aTHz radiation source and a ray receiving device; the ray receiving device consists of a ray detector and a data acquisition card; the ray receiving device is positioned under a belt conveyor; the THzradiation source and the ray receiving device are aligned from top to bottom; the ray detector is connected with the data acquisition card and is connected with the control terminal; the execution system comprises a pneumatic executor and a PLC (Programmable Logic Control) end; the pneumatic executor is connected with the PLC end which is connected with the control terminal. The dry-process blocky-material sorting device based on the terahertz imaging has the beneficial effects that the THz radiation source is adopted to sort blocky materials, so that the safe and reliable effects are achieved, no damage is caused to a human body and the materials and the application is wide.

Description

technical field [0001] The invention relates to a bulk material sorting device, in particular to a dry bulk material sorting device based on terahertz imaging. Background technique [0002] Sorting and separation of bulk materials is widely used in mineral processing, building materials, solid resource utilization and other fields, such as sorting of lump coal, metal ore, non-metal ore, building materials, solid waste, etc. At present, the common dry separation methods for bulk materials can be divided into: gamma ray recognition, X-ray recognition, color difference intelligent recognition and sorting, winnowing, etc. according to the separation mechanism. The dry separation is mainly based on the difference in its composition. [0003] However, the above-mentioned sorting methods have certain defects. Both γ-rays and X-rays have strong penetrating power and are easy to cause harm to the human body; the color difference intelligent identification and sorting technology mainl...

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Problems solved by technology

[0003] However, the above-mentioned sorting methods have certain defects. Both γ-rays and X-rays have strong penetrating power and are easy to cause harm to the human body; the color difference intelligent identification and sorting technology mainly relies on the different colors of materials for identification and sorting. The color difference of the selected materials is small or the surface adheres to other tiny particles, resulting in poor sorting accuracy; winnowing is mainly based on different material densities, and is affected by factors such as wind force, material density difference, and moisture. poor

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