Mould Washing Machine for the Food Industry

This mould washing machine for the food industry is a washing and drying line based on Pohjaranta's washing line technology, built for food moulds and plates. The moulds travel on a conveyor through washing, pre-rinse, final rinse and drying, and each product has its own wash programme. In the delivered line the capacity is 250–300 moulds or 300–350 plates per hour, and less than 2 grams of water is left in a mould after drying. Each line is designed and built in Säkylä, Finland, to suit the dimensions of your moulds and your production rate.

Technical Data

Maximum mold width: 1,500 mm
Configuration: Single or two-row
Material: Stainless steel
Control: PLC compatible

Technical Description

Food moulds and plates on the same line The line is designed for efficient and hygienic washing of moulds and plates. The delivered line washes plastic moulds (1110 × 235 × 35 mm) and plastic plates (560 × 340 × 2 mm) on the same line, each with its own wash programme. Manually adjustable side guides keep the items precisely on track regardless of size, and the items are fed onto the conveyor upside down, long side first. The washing process Wash. An acid-proof pump (15 kW, 400 l/min, 6–8 bar) feeds the wash water to nozzles with adjustable direction. The thermally insulated 500-litre wash tank is steam-heated to +50–60 °C, and a double plate mesh filter removes solids. The wash unit uses water from the pre-rinse. Pre-rinse. The pre-rinse uses water recirculated from the final rinse. The unit has an acid-proof pump (1.5 kW, 100 l/min, 1.5–2 bar) and a double plate mesh filter. Final rinse. The moulds are rinsed with clean mains water (+55–65 °C), and the water is recirculated to the pre-rinse tank. Drying. Two fans (5.5 kW, 2 × 2,500 m³/h) with adjustable nozzles direct the airflow at each surface separately. After drying, less than 2 g of water is left in a mould and less than 1 g on a plate, and the items are at 35–45 °C. Detergent dosing and consumption monitoring Detergent dosing is automatic: a conductivity sensor controls a diaphragm pump, and the detergent concentration is set and monitored from the user interface. The line measures electricity and water consumption and counts the washed items, with the figures shown on screen in real time. Sizing and wide moulds The mould washing machine is sized to the dimensions of your moulds and your production rate. Pohjaranta's two-row dryer has a dedicated version for moulds up to 1,500 mm wide. The line is built in stainless steel and can be connected to conveyors, stackers and destackers. Mould washing machine FAQ Can the same line wash moulds and plates? Yes. The delivered line washes both moulds and plates, each with its own wash programme. How dry are the moulds after washing? In the delivered line less than 2 grams of water is left in a mould and less than 1 gram on a plate. How is the wash water heated? In the delivered line the wash water is heated with steam.