‌Rice grain dryer‌

‌Rice grain dryer‌ Introduction

‌Rice grain dryer‌ is a device specially used to reduce the moisture content of rice. Its core purpose is to reduce the moisture content of rice to a safe storage level to prevent the rice from mildewing. The working principle of the rice grain dryer is mainly achieved by reducing the moisture content. For newly harvested rice, its moisture content is often very high, and it needs to be reduced to a safe moisture range suitable for storage through a dryer. Usually, this safe moisture range is about 12%. Such treatment can ensure that the rice can be stored safely, avoid mildew and loss, and thus ensure the quality and yield of the grain.

Functional features of rice grain dryer

Rapid Moisture Removal

The primary function of the rice dryer is to quickly dry harvested wet paddy, reducing its moisture content to meet storage and processing requirements. Utilizing advanced technology, the dryer can rapidly dry wet paddy, preventing mold and spoilage.

Quality Preservation

The dryer employs even heating and automated control, ensuring that the rice maintains its original quality and taste during the drying process. Compared to traditional sun drying, the dryer minimizes the risk of contamination and quality degradation from prolonged exposure to external environments.

Enhanced Drying Efficiency

The dryer offers high drying capacity, significantly shortening the drying time for rice and boosting production efficiency. This is especially important for large-scale rice growers and processing enterprises, helping to reduce storage space and lower storage costs.

Automated Operation

Modern dryers are typically equipped with intelligent control systems that automatically adjust temperature, humidity, and other parameters during the drying process. This not only reduces the burden of manual operation but also minimizes the impact of human error on rice quality.

Energy Efficiency and Environmental Friendliness

The dryer incorporates advanced energy-saving technologies and environmentally friendly materials, such as hot air circulation systems and aluminum inner wall panels. These features ensure effective drying while reducing energy consumption and emissions, contributing to sustainable agricultural development.

Strong Adaptability

The dryer can be adjusted to suit different varieties and grades of rice, ensuring optimal drying results. It is also suitable for various scales of rice growers and processing enterprises, whether large farms or small farmers, allowing them to choose the right drying equipment based on their needs.

Reduced Losses

In traditional sun drying, rice is vulnerable to weather and pests, leading to quality degradation and increased losses. The dryer significantly reduces these losses by providing rapid and even drying, ensuring better storage and processing outcomes.

The structure of rice grain dryer

Feeding System

This system is responsible for conveying the paddy to the interior of the dryer. It typically includes components like a feeding hopper and an elevator to ensure the smooth entry of paddy into the drying process.

Drying System

• Hot Air Furnace: This device provides the necessary heat for drying by burning fuel such as wood, diesel, or natural gas. The furnace converts the heat into hot air, which is then delivered to the drying chamber through ducts.
• Fan: The fan drives the hot air into the drying chamber, ensuring thorough contact between the paddy and the hot air, which accelerates moisture evaporation.
• Heat Exchanger: Positioned between the hot air furnace and the drying chamber, the heat exchanger enhances the efficiency of heat energy utilization by transferring heat.
• Hot Air Ducts: These ducts connect the hot air furnace to the drying chamber, facilitating the delivery of hot air into the chamber.
• Drying Chamber: The paddy undergoes drying in this chamber, which may contain interwoven layers of angular vent boxes to optimize the contact between hot air and the paddy. The chamber’s structure and materials are designed to withstand the mechanical and thermal stresses encountered during drying.
• Discharge System: This system discharges the dried paddy from the dryer. Dust removal devices may also be installed to filter out dust and other impurities as needed.

Control System

The control system regulates the operation of the hot air furnace, fan, heat exchanger, and other equipment. It automatically adjusts the drying process based on preset temperature and humidity parameters, ensuring proper drying treatment of the paddy while improving efficiency and stability.

Combustion Chamber (for dryers using combustion-based heating)

This chamber burns fuel, with components like an oil pump, nozzle, flame detector, and control valve. The combustion chamber transfers the heat generated from burning fuel to the hot air furnace.

Tempering Section (available in some dryers)

This section helps equalize the temperature and moisture between the inner and outer layers of the dried paddy, achieving uniform moisture reduction.

Other Auxiliary Components

These may include a moisture detector, elevator, grain discharge wheel, and bottom auger, all of which assist in monitoring, conveying, and discharging the grain during the drying process.

The structure of rice grain dryer

Energy Conservation

The paddy dryer utilizes hot air circulation technology to effectively harness heat energy, thereby reducing energy consumption. This circulation method ensures that heat is fully utilized during the drying process, minimizing energy waste.

Enhanced Drying Efficiency

The dryer automatically adjusts the temperature and airflow based on the actual conditions of the paddy, significantly boosting drying efficiency and shortening drying time. This contributes to reducing losses during storage and processing while increasing production efficiency.

Ensured Drying Quality

The dryer precisely controls the drying temperature and airflow, ensuring the paddy is evenly heated during the drying process and avoiding localized overheating or excessive moisture. This helps maintain the paddy’s original quality and taste, thereby improving drying quality.

Cost Reduction

By improving drying efficiency and quality and reducing drying time and energy consumption, the dryer lowers overall drying costs. Additionally, the dryer minimizes issues such as mold and sprouting caused by weather conditions, further reducing losses and costs.

Environmental Safety

The dryer employs pollution-free, noise-free hot air circulation technology, meeting environmental protection standards. It is also equipped with multiple safety protection devices to prevent accidents, ensuring the safety of both operators and equipment.

Ease of Operation

Modern dryers are typically equipped with intelligent control systems, enabling automated operation. Operators only need to set the parameters, and the drying process can be initiated without requiring constant monitoring or manual adjustments.

Strong Adaptability

The dryer can be adjusted according to the different varieties and grades of paddy, making it highly adaptable. Both large-scale paddy farmers and smallholders can select suitable drying equipment based on their specific needs.

Reduced Labor Requirements

The high degree of automation in the dryer significantly reduces labor intensity and lowers the demand for labor. This is particularly important for addressing labor shortages in rural areas.

Application of ‌Rice grain dryer‌

The Grain dryer machine is suitable for efficiently drying all cereals, grains, beans, and seeds of all crops such as corn, wheat, rice, soybean, sorghum, rapeseed, cashew, barley, etc. It is suitable for all kinds of farms.

Working Principle

The paddy crops are input from the top of the tower through the bucket elevator, and through the distribution device to ensure that the equipment is always in a full load state during operation.

The induced draft fan introduces the hot air into the inside of the tower body, and the rice crops are combined with the bottomless V-shaped baffles that are turned inward, and the multi-row V-shaped baffles are arranged staggered for processing, so that the rice crops can be mixed with the hot air, and the water vapor generated is discharged from the dryer exhaust system

Technical parameters of ‌‌Rice grain dryer‌