What is the difference between drum type and box type grain dryers

Grain dryer and box dryer are two different types of drying equipment, each with unique characteristics and applicable scenarios. The following is a detailed introduction to these two types of dryers:

• Grain dryer: definition and purpose
• Grain drum dryer is a specialized equipment used for drying grains. It adopts a hot air drying box design and generates a large amount of hot air in a short period of time through a rotary heating device to heat and dry grains, in order to reduce the moisture content of grains, kill insect eggs, and solve the problem of grain drying.
• working principle
• It mainly includes heating and drying, ventilation circulation, temperature control, humidity monitoring, and automatic dehumidification. Hot air is sent into the drying chamber through a fan to heat and dry the grains; At the same time, the ventilation and circulation system ensures the removal of moisture from the drying room to maintain appropriate humidity; Temperature control and humidity monitoring are achieved through sensors, controllers, and other components to ensure optimal drying of grains.
• Type and Characteristics
• According to the direction of relative movement between grains and airflow, grain dryers can be divided into cross flow, mixed flow, co flow, counter flow, forward counter flow, mixed counter flow, and forward mixed flow types. Different types of grain dryers have different characteristics and applicable scenarios. For example, the cross flow dryer has a simple manufacturing process, easy installation, low cost, and high productivity, but the uniformity of grain drying is poor and the unit heat consumption is high; The mixed flow dryer has a uniform supply of hot air, a relatively uniform moisture content in the dried grains, and low unit heat consumption, but it has a complex structure and slightly higher manufacturing costs; The downstream dryer uses hot air with high temperature, low unit heat consumption, and can ensure the quality of dried grains, but it has a complex structure and requires a high power high-pressure fan.