What is the difference between a four-pass dryer and a three-pass dryer?

2024/05/15 10:15

As a product mainly developed by our company, the four-pass dryer is most frequently asked by visiting customers about how it is different from other dryers. Let’s briefly introduce it using the three-pass dryer as a comparison.

What is the difference between a four-pass dryer and a three-pass dryer?

1. Different sizes: Compared with three-pass dryers, our four-pass dryers are slender and similar to single-cylinder dryers.
2. Different feeding methods: Our four-process dryer adopts the "cyclone dispersed feeding" method. The three-pass dryer uses a star-shaped unloader to directly enter the dryer.
3. The most important internal structure is different: Our four-pass dryer adopts the company's self-developed "multi-cylinder" structural design, which is not easy to block materials, while the three-pass dryer uses a three-cylinder circulation method, which is prone to clogging when bent. .
4. Safety: Compared with flammable materials such as wood chips and pasture, our four-process dryer has added fire protection devices, making it safer


The four-process dryer has four major advantages:

1. The four-process dryer adopts the "multi-cylinder dispersion" design independently developed by the company, which can fully contact the material with the cylinder, so that the material can be dried more evenly.
2. The four-process dryer is designed with a fireproof board inside and adopts the company's independently developed "cyclone feeding" method to prevent the material from direct contact with the fire source, thereby protecting flammable materials such as sawdust. To achieve the purpose of being safer and less likely to catch fire.
3. The four-process dryer adopts the working principle of multi-cylinder coaxiality. After the material enters, the multiple cylinders work at the same time to make the drying more complete and smooth. Therefore, our four-process dryer is mainly used for materials such as wood chips, cow dung, bean dregs, etc. Materials with high moisture content also solve the problem of material blocking in the later stage, greatly reducing maintenance costs.
4. Through the "multi-cylinder dispersion" design and the "multi-cylinder coaxial" working principle, the four-process dryer greatly increases the output at the same time and consumes the same energy, thus reducing the production cost.


The four-process dryer has more advantages for materials with high moisture content and large output.

Through the above introduction, you must have a better understanding of the four-process dryer.


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