Yutung Industrial manufactures custom hollow spiral screws for vacuum screw dryers and continuous drying equipment.
Working Principle
The hollow spiral screw is the core heat transfer component of a hollow screw vacuum dryer.
Heat transfer media such as steam, thermal oil, or hot water flows inside the hollow shaft and spiral blades.
As the screw rotates, materials are continuously pushed forward while being heated indirectly, achieving efficient and uniform drying.
Structure
We weld two screw pieces together to get a vacuum space.
Application
It is used to dry or cool food, tea, or other materials.
When hot oil, steam, or hot water flows inside the hollow screw, wet materials are conveyed, heated indirectly, and gradually dried.
When cooling media are used, the hollow spiral screw can also cool hot materials before packing or further processing.
Hollow spiral screws are widely used in continuous drying equipment for industries such as:
- Chemical processing
- Sludge drying systems
- Food and pharmaceutical materials
- Environmental engineering equipment
- Industrial waste treatment
Machine
Our hollow spiral screw assemblies are used in vacuum screw dryers, hollow screw coolers, and continuous thermal processing equipment.
Customize
The screw flight size and material are fully customized. Outer diameter can range from 250 mm to 800 mm, and the maximum length can reach 6 meters.
We manufacture the screw flight/spiral flight together with the inner axis.
Food Grade screws
We also manufacture the food-grade screws.
The material must be stainless steel 304 or above, and the surface must be fine and smooth without any material residue.
It is mainly used for food weighing and packaging, fluid food processing, pasta processing, etc.
Screw Flight Project
We also manufacture customized screw flights for conveyor systems and drying equipment.
Yutung also has another business for conveyor screw flighting.
