. What is a Pasta Static Dryer?
A Pasta Static Dryer is an industrial machine used in the pasta manufacturing industry to dry pasta without mechanical movement (i.e., static drying). Unlike continuous or belt dryers, the pasta remains stationary during the drying process, typically placed on trays or perforated shelves inside a chamber.
2.1 Key Characteristics
Batch processing: Pasta is loaded and dried in batches.
Stationary drying: No mechanical movement during drying.
Customizable cycles: Recipes can be programmed based on pasta shape, size, and moisture content.
High precision: Advanced sensors and PLC control systems manage parameters.
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3. Working Principle
The drying process in a static dryer occurs through the controlled circulation of heated and dehumidified air. The dryer chamber maintains specific temperature, humidity, and air speed profiles throughout the cycle.
3.1 Process Steps
1. Loading: Freshly extruded pasta is placed on trays.
2. Pre-drying: A short phase where surface moisture is removed to stabilize the product.
3. Main drying phase: Controlled and gradual removal of internal moisture.
4. Stabilization or Tempering: Final phase to avoid cracks or surface hardening.
5. Unloading: Dried pasta is removed and sent to packaging or storage.
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4. Design and Construction
4.1 Structural Components
Drying Chamber: Insulated to prevent heat loss and maintain internal conditions.
Tray Holders or Racks: Designed to allow maximum airflow across trays.
Air Handling Unit (AHU): Comprises fans, heaters, and dehumidifiers.
Control Panel (PLC/HMI): Enables recipe control, monitoring, and diagnostics.
Sensors: Measure temperature, humidity, air speed, and product moisture.
4.2 Materials
Food-grade stainless steel: For trays and internal surfaces.
Insulated panels: For external housing.
High-performance seals: To ensure airtight operation.
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5. Technical Specifications
Specifications may vary based on manufacturer and model, but a standard pasta static dryer has the following features:
Parameter Typical Value
Capacity per batch 200 – 2000 kg
Drying time 4 – 10 hours
Temperature range 25°C – 90°C
Relative humidity control 30% – 95%
Air velocity 0.5 – 2.0 m/s
Trays per rack 10 – 40
Material SS304 / SS316
Power Supply 380V / 3-phase / 50Hz
Control System PLC with touch-screen HMI
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6. Types of Pasta Suitable for Static Dryers
Static dryers are typically used for short-cut pasta varieties because these shapes:
Are less prone to deformation when stationary.
Require even and slower drying to prevent cracking.
Examples include:
Penne
Macaroni
Fusilli
Farfalle
Ditalini
Gnocchetti
