Defatted Soy Milk Clarification Separator Centrifuge Disc Stack Low Fat Production

Low fat and defatted soy milk present a specific clarification challenge: the solids that remain after fat removal are extremely fine colloidal particles and residual fibre fragments that pass through decanters and screens, yet they settle slowly and form a sediment layer in the finished package that consumers interpret as a quality defect. The HD-DSS-470 is a self cleaning disc stack separator built to remove these particles at a level that a decanter cannot reach. Suspended solids are separated in the narrow channels between the discs at 6800 G, collected in the sludge space at the periphery of the bowl and ejected automatically through the discharge ports at a programmable interval.

Because the clarification duty is fine rather than bulk, the machine is configured for high separation efficiency instead of high solids throughput. Disc spacing, disc angle and the centripetal pump pressure have been selected for soy beverage viscosity and density, and the discharge interval can be tuned from one to one hundred and twenty minutes so that product losses during ejection stay below one percent. The bowl is manufactured from duplex stainless steel, all product contact surfaces are polished, and the machine is fitted with a steam sterilisable inlet so that it can be integrated into aseptic or extended shelf life beverage lines.

• Fine Colloidal Clarification: Disc channels with optimised spacing and a 6800 G field remove particles that decanters and 200 mesh screens cannot capture, delivering a beverage with no visible sediment after thirty days of storage.
• Automatic Self Cleaning Bowl: The bowl ejects sludge through peripheral ports at a programmable interval without stopping the feed, so the separator runs continuously through a full production shift rather than requiring periodic manual flushing.
• Low Product Loss Discharge: Partial ejection sequences and a tuned sludge space volume limit product loss to less than one percent per cycle, which is critical when the clarified soy milk is a high value finished beverage.
• Hygienic Sterilisable Design: The inlet and outlet chambers are designed for steam sterilisation, all seals are food grade and the interior surfaces are polished to a roughness below 0.8 micrometres, supporting extended shelf life and aseptic filling requirements.
• Stable Clarification Pressure: A centripetal pump with a constant pressure discharge maintains a steady outlet pressure of two to three bar, so downstream homogenisers and pasteurisers receive an even feed without pulsation.
• Condition Monitoring: Vibration, bearing temperature and bowl speed are monitored continuously, and the PLC locks out the discharge mechanism and stops feed automatically if any parameter leaves its permitted window.

The separator is used in low fat and defatted soy beverage production, in soy protein isolate and concentrate plants where fine clarification precedes spray drying, and in the manufacture of soy based desserts, cultured products and coffee creamers where sediment is unacceptable. It also performs the same duty for other plant based beverages including almond, oat and coconut drinks, and for the clarification of fruit juice concentrates that carry colloidal pectin haze. Because it can be steam sterilised and cleaned in place, the machine is compatible with both fresh chilled distribution and aseptic ambient distribution of the finished product.

The separator bowl is locked with the transport locking device, the machine is drained and covered with a food safe protective film, and the complete unit is fixed to a fumigated wooden base inside a seaworthy plywood case with a vapour barrier and desiccant. Loose parts including the tool kit, spare seal kit, nozzle set and control cabinet are packed separately. Documentation includes the installation and operation manual, the maintenance and inspection schedule for the bowl, electrical drawings, material certificates and the factory balancing report. Warranty is twelve months from commissioning, supported by a bowl inspection service at recommended intervals.