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XUANYU Seaweed Crushing and Sieving Machine for Carrageenan Processing

XUANYU Seaweed Crushing and Sieving Machine is a specialized integrated equipment engineered exclusively for the pre-processing stage of carrageenan extraction, designed to handle various carrageenan-rich seaweeds (such as Eucheuma, Kappaphycus, and Gracilaria). It integrates high-efficiency crushing, precise sieving, and dust-free processing in one unit, effectively breaking seaweed raw materials into uniform particles (adjustable 20–200 mesh) while removing impurities, laying a solid foundation for subsequent alkali treatment, extraction, and purification processes. Suitable for small, medium, and large-scale carrageenan processing plants, it features stable performance, low seaweed loss, and food-grade hygiene, helping to improve carrageenan yield, purity, and production efficiency.

Core Advantages

1. Seaweed-Specific Crushing Design: Equipped with high-hardness, corrosion-resistant stainless steel blades and a specialized impact crushing chamber, it gently and efficiently breaks wet/dry seaweed without damaging the carrageenan molecular structure. The adjustable crushing gap and speed prevent over-crushing (avoiding colloidal loss) and under-crushing (ensuring full extraction), with a crushing uniformity rate of ≥98%.
2. Precise Multi-Grade Sieving: Integrated multi-layer vibrating sieve (1–3 decks) with adjustable mesh sizes (20–200 mesh) realizes one-time separation of qualified seaweed particles, impurities (sand, gravel, dead algae), and coarse residues. The anti-blocking sieve surface design (with rubber wipers and air purge) solves the problem of sticky seaweed blocking the sieve, ensuring sieving efficiency ≥95% and consistent particle size for stable subsequent extraction effect.
3. Food-Grade Hygiene & Corrosion Resistance: All wetted parts (crushing chamber, sieve, hopper, conveyor) are made of AISI 304/316L stainless steel, with crevice-free polished surfaces that meet FDA food safety standards. The fully enclosed structure prevents seaweed contamination and reduces salt and moisture corrosion, adapting to the harsh environment of seaweed processing plants.
4. Low Loss & High Yield: The optimized internal flow channel and anti-stick inner wall design minimize seaweed residue on equipment surfaces, reducing raw material loss to ≤1%. The integrated crushing-sieving process avoids intermediate material transfer loss, effectively improving carrageenan extraction yield by 5–8% compared to separate crushing and sieving equipment.
5. Easy Operation & Maintenance: PLC+HMI touchscreen control enables one-key start-stop, adjustable crushing fineness and sieving speed, and real-time monitoring of equipment operation. Tool-free disassembly of blades and sieve layers facilitates cleaning and replacement; the sealed dust-collecting system reduces dust pollution, ensuring a clean working environment and low daily maintenance costs.
6. Flexible Integration & Customization: Compact structure, small footprint, and customizable outlet size, perfectly matching subsequent alkali treatment tanks, extraction equipment, and conveying systems. It can be customized according to seaweed types (wet/dry), processing capacity, and required particle size to meet diverse carrageenan processing needs (such as semi-refined and refined carrageenan production).

Working Principle

Sieving & Impurity Removal: The crushed seaweed mixture is sent to the multi-layer vibrating sieve by a conveying device; under the action of high-frequency vibration, qualified particles (meeting extraction requirements) pass through the sieve mesh and are discharged to the next process, while impurities and coarse residues are retained and discharged separately from the sieve tail

Feeding: Cleaned seaweed raw materials (wet or dry) are evenly fed into the crushing chamber via a screw feeder, avoiding material blocking and ensuring stable feeding.

Crushing: Driven by a high-efficiency motor, the rotating blades in the crushing chamber impact, shear, and rub the seaweed, breaking it into small particles; the adjustable crushing gap controls the particle size, and the anti-stick inner wall prevents seaweed adhesion and caking.