The core operating principle of a grain and bean gravimeter (typically a kidney bean gravimeter) is based on the differences in the physical properties of beans of varying quality. By combining mechanization and intelligent technology, it enables automated and precise grading and sorting. Its principles can be broken down into three key components: “core physical principles + key process steps + intelligent auxiliary control,” as follows:
1. Core Physical Principle: Sorting Based on “Gravity – Density Differences”
During the growth and harvesting process, grain and bean varieties (such as kidney beans, red beans, and mung beans) exhibit significant physical differences due to their maturity, plumpness, and degree of damage. Full, high-quality beans have high density and high gravity, while shrunken beans and impurities (such as stones and broken shells) have low density and low gravity. Gravimeters exploit this core difference, mimicking the manual sorting process of “weighing by hand and visually determining plumpness,” transforming physical differences into sorting results through mechanical devices. II. Key Process Steps: Four Steps to Accurate Sorting
The grain and bean gravimeter’s sorting process isn’t a single step; rather, it consists of four sequential steps: “feeding – pretreatment – specific gravity grading – collection”—thus ensuring efficient sorting. The specific process is as follows:
1. Uniform feeding: Ensuring stable sorting
2. Pretreatment: Removing large impurities and dust
3. Core specific gravity grading: Utilizing multiple technologies to achieve precise separation
4. Classified collection: Automated material storage
III. Intelligent Assisted Control: Dynamically Optimizing Sorting Parameters
To account for differences in the physical properties of beans across varieties and batches (e.g., slight variations in density between red beans and black kidney beans, or differences in moisture content between newly harvested and stored beans), modern grain and bean gravimeters are equipped with an “intelligent sensor + algorithm control” system for dynamic optimization.
In summary, the working principle of a grain and bean gravimeter is essentially to use a mechanical device to convert differences in the physical properties of beans into controllable differences in their motion trajectory. Intelligent technology then dynamically optimizes these parameters, ultimately achieving efficient and accurate automated sorting.
Post time: Aug-29-2025
