The air-screen gravity separator integrates three processes: air separation, vibration screening, and gravity separation. Coupled with PLC intelligent linkage control, it precisely adapts to the differentiated cleaning needs of two materials: sesame (small, containing fine sand, many shriveled pods) and soybeans (large grains, moldy and insect-damaged grains, many clods and stones). Compared to ordinary manually adjustable models, its advantages are as follows:
I. Process Structure Advantages: One machine addresses the pain points of both sesame and soybeans.
Comprehensive grading and impurity removal, solving the differences in impurities between the two crops.
Sesame Cleaning: The pre-screen air separator efficiently removes sesame pods, dust, grass clippings, and shriveled sesame seeds; multi-layer precision screens intercept large grasses and impurities, while allowing fine sand to pass through; the gravity platform uses density stratification to separate immature shriveled grains and light impurities, solving the problems of small sesame grains easily escaping and fine sand being difficult to clean.
Soybean Cleaning: The screen surface removes broken pods and large clods of soil; the gravity system accurately distinguishes intact soybeans from insect-damaged grains, moldy grains, shriveled beans, and clods of soil; simultaneously removing broken beans improves the appearance of commercial beans and seed germination rate. A single set of equipment allows for switching between sesame and soybean production simply by changing the screen and adjusting parameters, without requiring a change of the main unit. This makes it suitable for grain and oil processing plants that rotate between processing multiple products.
Flexible sorting reduces grain breakage and loss. Sesame seeds are small and brittle, while soybeans are easily damaged by impact, leading to oil extraction. The equipment uses optimized vibration stroke, with PLC precisely controlling the amplitude and frequency. High-frequency, low-amplitude vibration is used for cleaning sesame seeds, while moderate-frequency, moderate-amplitude vibration is used for switching soybeans, reducing collisions and breakage, resulting in a high product integrity rate and reduced raw material loss.
II. Core Advantages of the PLC Intelligent Control System (Different from Ordinary Models)
One-click material formula retrieval eliminates the need for repeated adjustments when switching between sesame and soybeans. The touchscreen has two sets of standard process parameters pre-stored for sesame and soybeans: fan speed, feed flow rate, gravity table tilt angle, vibration frequency, and damper opening. Switching between sesame and soybean processing requires only a one-click parameter recall, eliminating the need for repeated manual adjustments and significantly reducing material changeover time, ensuring stable cleaning quality.
Multi-mechanism linkage and closed-loop regulation ensures continuous stability of cleaning indicators. In ordinary models, the fan, feed, and gravity meter are independently manually adjustable, leading to large fluctuations in cleanliness when the moisture content and impurities of the incoming material vary.
PLC achieves linkage between feed frequency conversion, main fan, gravity fan, and vibration system: automatically adjusting airflow to changes in incoming material flow rate; real-time fine-tuning of dampers based on raw material moisture and impurity fluctuations ensures stable cleanliness of sesame and soybean products regardless of impurity levels in the raw grain.
Self-monitoring of faults protects raw materials from waste. Real-time monitoring of material blockage, fan malfunction, vibration overload, and abnormal material level. Automatic alarms are triggered in case of screen blockage or material shortage, and the feed is slowed down if necessary to prevent sesame overflow and soybean accumulation; reducing the risk of raw material contamination and mixing caused by equipment failure and downtime.
Visualized production data facilitates factory management and export quality control. Real-time display of output and runtime, supporting data storage; facilitating the statistical analysis of sesame and soybean processing capacity, meeting the quality traceability requirements of export orders; low operating threshold, simple training for beginners reduces reliance on experienced operators.
III. Advantages in Cleaning Quality Indicators
Multi-level impurity separation for high-grade finished products
Air separation removes light impurities, sieving separates large and small impurities, and gravity separation removes defective grains based on density.
Sesame: Effectively removes fine sand, shriveled grains, and sesame husks, resulting in a gritty finished product suitable for oil extraction and sesame kernel refining.
Soybeans: Separates stones, moldy beans, and insect-damaged beans, suitable for both commercial grain refining and soybean seed selection.
Finished product cleanliness consistently reaches 99.5%, with a low rate of good grain carryover in by-products and a higher raw material recovery rate.
Sealed dust removal structure, suitable for high-dust sesame processing conditions
Sesame processing generates a large amount of dust. The entire machine is equipped with a cyclone dust collector, and the PLC can link the dust collector fan to operate at constant pressure, preventing dust overflow, improving the workshop environment, and avoiding secondary dust adhesion to the sesame surface.
IV. Production and Operation Advantages
Strong Adaptability to Continuous Production Lines
The PLC has a signal interface, allowing direct integration with elevators, silos, and color sorters to form a complete production line, achieving automated continuous cleaning of sesame and soybeans. A single machine can also operate independently, catering to both small processing plants and large-scale production lines.
More Balanced Energy Consumption and Lower Long-Term Operating Costs** All fans and feeders are controlled by frequency converters. The PLC dynamically adjusts power based on load, saving electricity compared to fixed-frequency manual models during long-term continuous processing of sesame and soybeans. Stable operating conditions result in smoother wear on screens and rubber shock absorbers, extending the lifespan of vulnerable parts.
The PLC intelligent air-screen gravity separator integrates air separation, screening, and gravity separation, and can simultaneously meet the professional cleaning needs of sesame and soybeans. It has built-in two crop-specific process programs and allows for one-button switching of production modes. Relying on multi-mechanism linkage control, it can cope with fluctuations in raw grain impurities and stabilize the cleanliness of the finished product. It efficiently separates light impurities, large and small impurities, stones, and moldy and shriveled grains, reducing grain breakage and loss. With a high degree of automation, it is easy to integrate into complete production lines and is suitable for use by oilseed processing plants, soybean traders, and seed processing enterprises.
Post time: Jul-15-2026
