Application of Belt Filter in Polyester Fiber Dehydration

In the production process of polyester fiber, dehydration is a crucial link, and belt filters have been widely used in the dehydration process of polyester fiber due to their continuous operation, strong processing capacity, and high dehydration efficiency. The following will discuss the application of belt filters in this field in detail.

Application Background

During the production process of polyester fiber, a large amount of fiber pulp or fiber mixture with high moisture content is usually produced. The moisture content of such materials is often high, which is not conducive to subsequent drying, packaging, or reprocessing.

Traditional centrifugal or natural sedimentation methods are difficult to meet the requirements of modern production for efficiency and moisture content control. Therefore, belt filters have gradually become the preferred equipment for this dehydration link.

Working Principle

The belt filter uses two circulating filter belts to carry materials and squeeze them through multiple S-shaped rollers to gradually squeeze out the moisture in the materials. The whole process is divided into three stages:

Gravity dehydration zone: The materials are evenly distributed on the belt, and the free water in them is separated under the action of gravity, achieving the effect of preliminary removal of free water.

Wedge-shaped pre-pressing area: The belt filter gradually pressurizes, and the solids in the material gradually form a thin layer under the action of pressure.

High-pressure extrusion area: Through strong extrusion by multiple sets of rollers, most of the water in the material is squeezed out, and the moisture content of the filter cake is significantly reduced.

This segmented extrusion design is very suitable for processing fiber materials, which can effectively reduce fiber breakage and ensure dehydration quality.

Main Advantages of The Belt Filter

Continuous operation, improved efficiency
The belt filter is a continuous operation equipment, suitable for continuous dehydration of large quantities of polyester fibers, and is not prone to causing blockage.

Good dehydration effect, low residual moisture content
After being treated by the belt filter, the moisture content of the fiber can be greatly reduced, which is convenient for subsequent drying or granulation.

Low energy consumption and easy operation
Compared with centrifugal dehydration equipment, belt filters have lower energy consumption, stable operation, a high degree of automation, and reduced labor costs.

Protect fiber morphology
The multi-stage flexible extrusion structure can reduce fiber breakage, which is conducive to maintaining the integrity and recycling value of polyester fibers.

Conclusion

Due to its high efficiency, continuous operation, and good dehydration performance, the belt filter has become an ideal equipment in the polyester fiber dehydration process. It is particularly suitable for the treatment of large quantities of materials with high moisture content, effectively improving production efficiency and reducing subsequent processing costs.

Application of Belt Filter in Polyester Fiber Dehydration