Grain dryer AR

stationary

Product overview
The AR Series, ideal for batch processing, works by using a drying recirculation system. The product passes through the drying column several times, ensuring uniform final moisture content and preventing thermal shock. This process optimizes grain yield and quality, and the cooling process ensures the product is stored safely for a long time. It is the most flexible solution to achieve maximum precision and to get the most out of every harvest.

Why choose the AR Series

• Gentle Drying: The machine’s construction and the ability to set specific programs allow for slow drying cycles and long tempering periods, particularly suited for the treatment of delicate products.
• Traceability: Enables the separate management of small production batches, essential in sectors such as organic and seed production where lot distinction is a fundamental requirement.
• Seed Germination: Maintaining low temperatures and the ability to recycle the product multiple times, leveraging the natural fall within the drying chamber, preserves the seed’s germination capacity intact.

Technological core

• Loading Hopper: Special internal geometry ensures ideal flow of the grain and optimal feed into the drying column.
• Fans: Placed on the opposite side of the burner and working in suction mode to ensure uniform air flow; equipped with a silencer and a shutter to minimize acoustic and dust emissions.
• Catwalks: Fitted outside and inside the grain dryer to provide safe and easy access for routine inspection and maintenance.
• Air Ducts: Profile designed to facilitate grain flow and heat exchange between hot air and the grain to be dried.
• Heat Generator: Inline burner available for natural gas and LPG with accurate modulation and air temperature uniformity; diesel version also available.
• Extraction Device: Opening shutters that allow for even and controlled grain discharge.
• Basement: Structural element anchored to the ground ensuring dryer stability; certified to withstand extreme wind, snow and seismic conditions.

Drying process flow

• Air intake: External air enters the dryer to be heated and support the process.
• Hot air circulation: External air heated by the burner flows through the grain, releasing internal moisture.
• Exhaust air expulsion: Saturated with moisture from the drying process and blown out from the dryer.
• Product cooling: Once final moisture is reached, the burner shuts off and external air flows through the grain for controlled cooling, stabilizing the product for extraction and storage.

Complementary Technologies

• VAP System: Technology designed by STRAHL that provides additional reduction of dust emissions.
• Moisture Control System: System for monitoring product moisture to ensure further control of the drying process.
• Extraction Speed Regulator: Option including an inverter allowing regulation of the product extraction speed.
• Supplementary Temperature Monitoring System: Provides additional temperature probes to more accurately monitor temperatures in the various sections of the dryer.

Control systems
STRAHL control systems provide real-time data, faster decisions, oversight of key parameters, alerts in case of critical issues and optimization of the cycle to maximize yield, grain quality and operational efficiency.

Characteristics / technical specifications

• Type: Batch dryer (series) using a drying recirculation system.
• Process: Multiple passes of product through the drying column for uniform moisture and prevention of thermal shock.
• Objective: Optimize grain yield and quality; enable safe long-term storage via controlled cooling.
• Programs: Programmable for slow drying cycles and long tempering periods suitable for delicate products.
• Traceability: Designed for separate management of small production batches (suitable for organic/seed production).
• Germination preservation: Low-temperature operation and product recycling preserve seed germination capacity.
• Fans: Suction-mode fans with silencer and shutter to reduce noise and dust emissions.
• Access: Internal and external catwalks for inspection and maintenance.
• Air ducts: Profiled to facilitate grain flow and enhance heat exchange.
• Heat generator: Inline burner options for natural gas, LPG; diesel version available; accurate modulation for uniform air temperature.
• Extraction: Opening shutters for even and controlled grain discharge; optional inverter for extraction speed regulation.
• Structure: Basement anchored to ground; certified for wind, snow and seismic loads.
• Emission control: Optional VAP system for additional dust reduction.
• Monitoring: Moisture Control System and Supplementary Temperature Monitoring System available.
• Control platform: Real-time supervisory control providing alerts and process optimization.