The dried Polygonatum washing production line is a continuous, automatic washing system used for the pre-treatment stage of Chinese herb deep processing. Its main task is to wash freshly harvested Polygonatum root efficiently, remove soil and impurities, and prepare the raw material for later processing such as nine-steaming and nine-sun-drying.
A complete line usually has five core modules. The pre-treatment unit includes a sorting table and a soaking and soil-removal device that separates impurities and poor-quality material and loosens heavy soil through soaking and high-pressure spraying. The washing unit is the core and usually combines high-pressure spray washing with brush-roller scrubbing; some designs use an inclined washing plate so that water scouring and material tumbling clean soil from gaps and folds. The root removal and breaking unit separates the many thin fibrous roots from the main root while keeping the main root intact. The drying and dewatering unit removes surface water with a draining device or hot-air unit to prevent mould. The water circulation and control system filters and reuses the washing water and uses a PLC or LCD panel to control washing time, spray pressure and drying temperature for automatic continuous operation.
The line is completed by a Polygonatum steaming pot with a 1000 L capacity, steam heating, 1 kW of power and a fully 304 stainless steel body including the insulation. It holds 32 steaming baskets and can process about 400 kg per batch. Advantages include a 304 food-grade stainless steel body that meets food processing safety requirements, one-touch operation with automatic temperature control, heating and steaming, high output and yield, and a process that follows traditional hand-craft methods for better taste and colour. The machine also has a small footprint and runs in a stable, energy-saving way.
- Continuous, automatic washing for Polygonatum pre-treatment before deep processing
- High-pressure spray washing combined with brush-roller scrubbing
- Water circulation and purification system filters and reuses washing water
- PLC or LCD control of washing time, spray pressure and drying temperature
- Steaming pot with 1000 L capacity, 32 baskets and about 400 kg per batch
- 304 food-grade stainless steel construction for hygiene and corrosion resistance
