Introduction to different classifications of belt press dewatering machines

Core Classification of Belt Press Dewatering Machines (By Structure & Pressing Method)：

Structural Features: Equipped with only 1 set of pressing rollers (usually an integrated “pre-pressing + main pressing” design). The filter belt has a short running path, and the overall equipment is compact, occupying an area of approximately 2-5㎡.
Application Scenarios: Suitable for materials with low initial moisture content (70%-85%) or scenarios with low dehydration requirements, such as pre-treatment of lightly dehydrated fruit and vegetable residues, and traditional Chinese medicine residues.

Structural Features: Divided into a “pre-pressing section” (multiple sets of low-pressure rollers for initial water squeezing) and a “pressing section” (high-pressure rollers/pressing cylinders for deep dehydration). The filter belt tension is adjustable, and some models are equipped with automatic deviation correction and cleaning functions.
Application Scenarios: Ideal for materials with medium to high initial moisture content (85%-95%), such as cow manure, beer lees, and coconut coir. It is the mainstream model in the current market and meets most industrial/agricultural dehydration needs.

Structural Features: Adds a “precision pressing section” (ultra-high-pressure rollers or diaphragm pressing devices) to the two-stage design for enhanced dehydration. Some models are equipped with temperature control/moisture retention modules to prevent material drying and hardening.
Application Scenarios: Suitable for high-viscosity, high-moisture materials that require low final moisture content, such as sludge (municipal/industrial sludge), starch residues, and papermaking black liquor sludge. The final moisture content can be reduced to 50%-60%.

Structural Features: Combines “vacuum suction” şi “mechanical pressing”. The pre-pressing section uses vacuum suction cups to first remove part of the free water, then the material enters the pressing section for squeezing. The filter belt has finer pores.
Application Scenarios: Suitable for materials with fine particles that are prone to clogging the filter belt, such as kaolin, graphite residues, and ultra-fine waste residues in the food industry (e.g., soy milk residue), avoiding clogging issues in traditional pressing.