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Batch Recirculating Grain Dryer
- Commodity name： Batch Recirculating Grain Dryer
- 产品描述
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The batch-circulating grain dryer serves as core post-harvest grain-processing equipment. It is specially designed for drying paddy, wheat, corn and other grains. It rapidly reduces grain moisture to prevent mildew and germination, acting as key equipment to secure safe grain storage and processing.
Equipment Introduction
This is a low-temperature, high-efficiency and energy-saving circulating grain dryer adopting batch-processing plus circulating-drying mode. Compatible with multiple heat sources, it realizes efficient dehydration via low-temperature & high-air-volume drying technology while preserving grain quality with low breakage rate. It is widely applied in small-and-medium grain stations, family farms and grain processing plants.
Key Features
● Flexible heat sources & high energy efficiency: Compatible with biomass pellets, rice husk, coal, diesel, natural gas and steam. Low-temperature drying (hot-air temperature: 40-60℃) maximizes heat-exchange efficiency and cuts drying energy consumption.
● Uniform mixing & circulating drying: Grains circulate via low-speed elevator for even drying. Long-time tempering process greatly reduces cracking and breakage rates, with drying quality exceeding national standards.
● High automation & easy operation: Full-touch PLC control system supports auto/manual mode switching. Multi-point safety interlock devices deliver accurate detection and clear display for simple, intuitive operation.
● Reliable safety & wide adaptability: Equipped with thermal relay, air-pressure switch, full-level detector, temperature sensors and multiple safety components to keep the drying process safe and controllable.
Working Principle
It adopts a closed-loop process of circulating elevation — low-temperature drying — tempering & cooling to achieve uniform and efficient drying:
1. Feeding and circulating elevation Grains are fed by elevator into the top grain-storage section. Driven by the low-speed elevator, grains are continuously conveyed to the top of drying section and flow downwards by gravity to form continuous circulation, ensuring every grain is evenly exposed to hot air.
2. Low-temperature drying Hot air (40-60℃) generated by external heat sources is blown into the drying section by fan, contacting downward-flowing grains in counter-flow or parallel flow pattern to take away moisture. Low-temperature & high-air-volume mode avoids thermal damage to grains and effectively lowers breakage and cracking rates.
3. Tempering and cooling Dried grains enter the tempering section for long-time moisture equalization, enabling even diffusion of internal moisture and minimizing cracks caused by internal-external moisture difference. Grains are naturally cooled during circulation to finish one drying cycle.
4. Circulating operation and discharging Grains repeat the cycle of elevation-drying-tempering-cooling until moisture reaches preset value. Upon completion, the machine discharges finished grains automatically under PLC control with no manual intervention required.
Main Application Scenarios
1. Small-and-medium grain stations / grain collection & storage points Quickly dry harvested paddy, wheat, corn to safe-storage moisture level, avoiding mildew and germination. Solve the problem of unavailable sun-drying during rainy and harvest seasons.
2. Family farms / large-scale grain growers Suitable for small-to-medium planting scale, processing 5-30 tons per batch. Compact footprint and user-friendly operation for on-site rural drying.
3. Grain processing plants / rice mills Pre-dry raw grains to supply stably-moistured feedstock for subsequent rice milling, flour-making and oil-pressing. Improve processing efficiency, finished-product quality and reduce equipment wear.
4. Special grains & cash-crops drying Also applicable for sorghum, highland barley, soybean, rapeseed and other coarse grains & oil-bearing crops, meeting diverse drying requirements for agricultural commodities.
