Hot Air Dryer

The Hot Air Dryer is a general-purpose drying device that utilizes hot air circulation to heat, dehydrate, or solidify materials. Its core advantage lies in its ability to flexibly adapt to a variety of heat sources (such as electricity, steam, and gas), achieving a stable and controllable drying process across a wide temperature range (typically 40°C to 450°C, depending on the heat source). The device utilizes a forced ventilation design, using a fan to evenly circulate hot air within the drying chamber, significantly improving thermal efficiency, reaching 35%–50% compared to traditional drying methods. This efficient and uniform drying performance makes it suitable for diverse processing needs in industries such as food, pharmaceuticals, chemicals, plastics, and electronics, from raw material dehydration to finished product solidification.

Heat Source Selection and Temperature Control
Diversified Heat Sources: A key attraction of the Hot Air Dryer is its energy adaptability. The device can select the most economical or convenient heat source based on site conditions, including electricity, steam, gas (including liquefied petroleum gas), diesel, far-infrared radiation, and even biomass fuel. This flexibility reduces the equipment's reliance on specific energy sources, providing users with more cost-effective options.

Precise Temperature Control: The equipment is typically equipped with an automatic temperature control system (such as PID temperature control logic) to maintain chamber temperature fluctuations within a very narrow range (e.g., ±2°C). This is crucial for processing heat-sensitive materials or processes requiring strict curing profiles, effectively ensuring consistent product quality.

Structural Design and Efficient Drying
Efficient Hot Air Circulation System: The equipment utilizes a circulation system consisting of a high-temperature axial flow fan and strategically designed air ducts. Hot air circulates within the chamber in a closed loop, preventing significant heat loss. Some models also feature adjustable air distribution plates to further optimize hot air distribution across the material.

Modular and Standardized Configuration: Many Hot Air Dryers utilize a tray and drying trolley system. Standardized drying tray dimensions (e.g., 460×640×45mm) make loading and unloading materials and switching between batches convenient and efficient. Equipment capacity ranges from small-scale labs to large-scale industrial applications, supporting customized production, such as adding trolleys to accommodate larger processing volumes. Wide Range of Applications
The Hot Air Dryer's applications cover nearly all industrial fields requiring drying and heat treatment.

Food and Agricultural Products: Used for drying dehydrated vegetables, fruits, sausages, etc.

Pharmaceutical and Chemical Industries: Used for drying or sterilizing APIs, Chinese herbal medicine slices, extracts, granules, pigments, dyes, etc.

Plastics Industry: Used as a hopper dryer to pre-dehumidify and dry plastic resins before injection molding or extrusion to ensure the quality of the finished product.

Other Industries: Also widely used in wood processing, electronic component baking, the printing industry (such as drying screen printing inks), and for rapid drying of industrial parts after cleaning.