An industrial plastic tray washing machine cleans and sanitizes trays via continuous conveyor + multi-stage high-pressure hot spray + filtration + drying, all PLC-automated.
Core Components
- Conveyor: Adjustable-speed chain/net belt, moves trays through the tunnel.
- Spray System: 360° rotating nozzles (up/down/left/right), pressure 0.5–3 MPa.
- Water Tanks: Separate tanks for pre-wash, main wash, rinse; with 304 stainless steel filters.
- Heating: Electric/steam heaters, 50–80°C (122–176°F).
- Drying: High-pressure air knives or hot air blowers.
- Control: PLC + touchscreen, adjusts speed, temp, pressure.
Working Process (4–5 Stages)
- Loading & ConveyingTrays are placed on the inlet conveyor and fed into the washing tunnel automatically.
- Pre-Wash (Remove Big Debris)High-pressure hot water spray strips away loose dirt, food residue, and large particles.
- Main Wash (Deep Clean & Degrease)Hot water (50–80°C) + detergent sprayed at high pressure; breaks down grease, oil, and stubborn stains.
- Rinse (Remove Residue)Clean (often hot) water spray removes leftover detergent and debris; ensures no chemical residue.
- Drying (Optional but Common)Powerful air knives/blowers remove droplets; hot air drying (60–100°C) for full dryness.
- UnloadingClean, dry trays exit the machine, ready for reuse or stacking.
Key Working Principles
- Mechanical Action: High-pressure impact + 360° nozzle coverage (no dead corners).
- Thermal Effect: Hot water melts grease; heat aids disinfection.
- Chemical Action: Detergents emulsify oil; sanitizers kill bacteria.
- Water Recycling: Multi-stage filtration → reused water (saves 70%+ water).
Applications
Food processing, logistics, pharmaceuticals, bakeries, and poultry plants—anywhere plastic trays/totes need hygienic, high-volume cleaning.
Summary
It’s an automated, continuous-flow system combining high pressure, heat, detergent, and filtration to clean and sanitize plastic trays efficiently and consistently.