Product Description

 

The potato vacuum filter is a solid-liquid separation device used in potato starch processing. It employs vacuum suction to rapidly draw moisture through filter cloth from potato pulp, achieving efficient separation of starch from the slurry. Featuring a compact structure and high automation, this equipment is suitable for medium to large-scale potato deep-processing production lines, significantly enhancing production efficiency and product quality.

After undergoing washing, crushing and filtering, sand and mud removal, and concentration and refining, potatoes proceed to the starch dehydration stage. The refined starch slurry contains excessively high moisture content and cannot be directly dried. Dehydration treatment is required to reduce the moisture content in the starch slurry, ensuring the quality of the finished starch product.

                                             

Working Principle of Potato Vacuum Filter:

Adsorption Stage: A variable-speed motor drives the hollow drum to rotate slowly within the pulp tank. The vacuum pump creates a negative pressure environment of -0.04 to -0.09 MPa inside the drum. Under pressure differential, the starch slurry adsorbs onto the surface of the drum filter cloth, forming a uniform starch pre-coat layer.

Dehydration Stage: As the drum conveys the material into the dehydration zone, the vacuum is maintained. Free water between starch particles passes through the pre-coat and filter cloth, entering the liquid-gas separator via suction pipes and distribution valves. Here, liquid and gas are separated: liquid is discharged by a centrifugal pump, while gas is purified by the vacuum pump before being vented.

Discharge Stage: When the starch filter cake reaches the preset thickness, the drum moves to the discharge zone. A high-hardness alloy scraper removes the thickened, flake-like starch. The filter cloth undergoes automatic cleaning before commencing the next cycle, requiring no manual intervention throughout the entire process.

Performance Parameters               

Scope of Application:

The potato dehydrator is suitable for drying various starches, primarily including: sweet potato starch, potato starch, cassava starch, mung bean starch, corn starch, wheat starch, kudzu starch, etc. It can also be used for drying other heat-sensitive powdered or flaked materials requiring rapid drying, as well as for drying and dehumidifying powdered materials in pharmaceutical, chemical, food, building materials, and plastics industries.

Multi-domain Food Application Expansion:

Grain Deep Processing: Corn syrup filtration, gluten dehydration, impurity separation in rice flour production.

Fruit and Vegetable Processing: Juice and vegetable juice clarification filtration, fruit pulp dehydration and concentration.

Sugar Production: Impurity filtration of fructose syrup, maltose, and glucose solutions to enhance syrup clarity.

Other Applications: Solid-liquid separation in soy products, wort filtration in brewing, dehydration in modified starch production.

  

Potato Dehydrator

Different root crops vary in internal composition, botanical properties, and starch content. To maximize starch extraction rates during processing, equipment specifications and types must be tailored to the botanical characteristics of each raw material. Custom-designed equipment is then deployed for actual production. Only through this approach can the advantages of filter processing be fully realized—delivering high efficiency, energy savings, time reduction, labor reduction, and superior quality.

Following the cleaning, crushing and filtering, sand and mud removal, and concentration and refining stages, the starch enters the dewatering process. The refined starch slurry contains excessively high moisture content and cannot be dried directly; it requires dewatering treatment. This significantly reduces the moisture content of the starch slurry, facilitating drying and ensuring the product quality of the starch.

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