How to buy a high-yield dryer?

When purchasing a mesh belt dryer, multiple factors need to be considered to ensure that the equipment meets production needs, is energy-saving, efficient, and operates stably in the long term. Here are the key considerations summarized by Jinlu Machinery for everyone:

1.Material adaptability

Material characteristics: Different materials (such as vegetables, traditional Chinese medicine, feed, chemical granules, etc.) have different requirements for temperature, humidity, and breathability. For example, drying dehydrated vegetables usually requires segmented temperature control, with the initial drying stage temperature reaching up to 120 ℃ and the final drying stage requiring an extended residence time.

Hygiene requirements: Food and pharmaceutical industries should choose food grade 304 stainless steel mesh belts to avoid contamination; Industrial materials can choose ordinary stainless steel mesh belts to reduce costs.

2.Heat source selection

Energy types: optional electric heating (such as air source heat pumps), gas, coal, steam, or biomass fuels. Electric heating temperature control is precise but costly; Coal burning is economical but environmentally friendly.

Environmental requirements: If it is necessary to meet environmental standards, priority should be given to clean energy sources such as electricity or natural gas.

3.Equipment structure and configuration

Mesh belt material: High temperature resistant stainless steel (such as 304 or higher specifications) suitable for the food industry; PTFE mesh belt is corrosion-resistant and non adhesive, suitable for special chemical materials. Multi layer design: Multi layer mesh belt can improve drying efficiency, such as quick drying for thin laying in the initial drying section and slow drying for thick laying in the final drying section. Automation level: Select equipment with automatic temperature, speed, and fan air volume adjustment to reduce manual intervention.

4.Drying process parameters

Temperature control: Adjust according to the temperature resistance of the material. For example, the optimal temperature for drying chili peppers is 46-55 ℃ to avoid browning.

Ventilation and dehumidification: High humidity materials (such as fresh chili peppers) need to be strengthened for dehumidification, maintaining a wet bulb temperature of 38-39 ℃ and a temperature difference of more than 6 ℃.

Drying time: usually 20-30 minutes, but it needs to be adjusted according to the moisture content of the material.

5.Maintenance and Durability

Cleaning and lubrication: Regularly clean the dust on the mesh belt, lubricate mechanical components, and prevent rust and wear.

Mesh belt lifespan: Choose high-density woven mesh belts to enhance load-bearing capacity and avoid long-term exposure to acidic and alkaline environments.

6.Manufacturer and after-sales service

Customization requirements: Non standard equipment needs to be communicated with manufacturers to customize solutions based on production volume, site, and other factors.

After sales support: Choose a reputable supplier  to ensure technical support and accessory supply.

7.Budget and cost-effectiveness

New vs. Second hand: Second hand equipment has a low price but carries risks. It is necessary to check the equipment status and clarity of ownership to avoid the low price trap.

Long term cost: Energy saving design (such as hot air circulation) can reduce operating costs, but the initial investment is relatively high.

summarize:

When purchasing a mesh belt dryer, it is necessary to consider the material characteristics, heat source, equipment configuration, process requirements, and budget. Priority should be given to selecting models that are customizable, easy to maintain, and energy-efficient. It is recommended to conduct on-site equipment inspections or consult professional manufacturers to ensure the selection of suitable drying solutions.