Consumption: raw water 4 m³/h, process water 5 m³/h, electricity 383 kW/h (installed capacity), compressed air 30 m³/h
Utilities: well water for washing, process water hardness ≤8° (0.9 mmol/l)
Voltage: as per site requirements
Process Description
Potato sending by high pressure flushing water
Destoning and weeding
Washing with transport water and circulating water system
Desanding
Rasping
Extraction
Concentrating
Fiber (dreg) dewatering
Drying
Packing
Soft water and sand handling
Washing Unit
Fresh potatoes are placed in storage and pushed by high pressure flushing water into the flume and workshop, then pumped to the chute for stone and heavy object separation; grass is removed by weeding hook.
After weeding and de-stoning, potatoes and conveying water are separated by a diversion grid, then enter the washing machine drum mounted in the cleaning tank; the drum is composed of multiple porous cylinders welded together, driven by a speed reducer, rotating to bring materials up and slide them back into the water for repeated cycles of mutual collision and friction, advancing via a rowing plate.
Cleaned materials are thrown out through the hopper.
The cleaning tank has a water inlet at the discharge end, so the cleanest water is at the discharge end; clean water advances gradually from front to back under screw action, while foul water overflows from the outlet near the inlet end, achieving countercurrent washing for best cleaning effect.
Transportation sewage and cleaning sewage pass through a sedimentation tank to remove mud and sand and other impurities before recycling.
Cleaned potatoes are conveyed to a bucket elevator by belt conveyor, with an iron removal selector at the end to remove iron and protect processing equipment.
Potatoes enter the bucket elevator and are lifted continuously to the raw material storage net bin for processing.
Crushing and Rasping Unit
Cleaned potatoes enter the net bin; the hopper outlet connects to a feeding screw conveyor with a screw flapper valve at the exit, linked to the rasper.
Spiral conveyor speed is variable to adjust processing capacity.
The double-file rasper is designed for easy operation and high efficiency.
When the rasper file needs changing, the current rasper and feeding valve are shut down, and the spare rasper and feeding valve are turned on to avoid production interruption.
Potato slurry is pumped into the desanding unit by a screw pump from the collecting gutter under the rasper.
Desanding Unit
Extraction Unit
All fiber is dewatered by the last centrifuge sieve and discharged to the platform outside the workshop by the dreg screw auger.
Water used in this section must be soft water to ensure final product quality.
Concentrating and Refining Unit
Dewatering Unit
Drying and Packing Unit
Scope of Supply
Complete line as per design basis and process description, including all equipment for washing, crushing and rasping, desanding, extraction, concentrating and refining, dewatering, drying, and packing.
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