Highlights / Standard Technical Parameters: 3000mm × 1600mm × 730mm
Machine Material: SUS304 stainless steel with 2.0mm thickened plates
Spiral Drum Diameter: Optional φ300 / φ400 / φ500 mm
Effective Drying Length: 1.5–6m (customized on demand)
Conveyor Drive: Variable frequency reduction motor; speed range 0.3–3 m/min
Heating Power: 6–24 kW (Electric heating); Gas heating can be customized
Temperature Control Range: 40–150°C digital constant temperature control
Hot Air Blower Power: 1.5–3 kW circulation fan
Processing Capacity: 200–1200 kg/hour (adjusted based on workpiece size)
Control System: 7-inch touch screen PLC fully automatic control
Total Machine Weight: 200 kg
Power Supply: AC 380V
The spiral dryer is a specialized, matching drying unit designed for fully automated ultrasonic cleaning lines. It is ideal for bulk parts such as screws, nuts, springs, small stamped hardware, magnetically polished workpieces, and precision small turned parts. Relying on internal spiral auger blades for continuous conveying, it seamlessly integrates with ultrasonic cleaning, multi-stage rinsing, and high-pressure air-knife cutting processes. This enables a fully automated, integrated assembly line operation of washing, draining, and drying, specifically solving pain points like residual water stains, oxidation/rusting, and uneven drying after bulk cleaning of small parts.
The entire machine is crafted from SUS304 thickened stainless steel, making it resistant to cleaning chemicals, rust, and corrosion. It is perfectly suited as a supporting unit for mass production lines in hardware, auto parts, fasteners, precision machining, and magnetic polishing industries.
Core Structural Components
Spiral Conveying System: Built-in one-piece molded stainless steel spiral auger driven by a variable frequency motor, with a steplessly adjustable conveying speed of 0.3–3 m/min. Workpieces gently tumble forward with the rotation, receiving 360° heating with no dead zones. Moisture within tiny threads, blind holes, and crevices is completely evaporated, preventing workpieces from stacking, bumping, or scratching.
Front High-Pressure Air-Knife Dewatering Section: The front end of the drying chamber integrates a vortex high-pressure blower. High-pressure air at 4–5 bar pre-blows and strips away free water droplets on the workpiece surface, significantly reducing the drying load, shortening drying time, and eliminating large-area watermarks.
Sealed Hot Air Circulation Drying Chamber: Featuring an upper and lower dual-duct circulating hot air design, supporting either electric or gas heating options. It is internally equipped with high-temperature filters to filter the circulating hot air, preventing secondary dust pollution. The fully enclosed insulation layer minimizes heat loss, saving energy and electricity.
Temperature Control & Safety Protection System: K-type thermocouple measures temperature in real time, with an accurately adjustable control range from room temperature up to 150°C. Equipped with multiple safety interlocks including over-temperature power-off, leakage protection, fan overload, and heating dry-burn prevention. Temperature, conveying speed, and drying time can be set with a single touch on the PLC touch screen.
Water Mist Recovery & Separation Device: The steam generated during drying is centrally recovered and condensed, preventing water vapor from flowing back into the front-end ultrasonic cleaning tank, which avoids cleaning fluid dilution and secondary oil contamination on workpieces.
Core Product Advantages
High Versatility for Bulk Small Parts: Capable of conveying screws, spring washers, shaft sleeves, stamped parts, steel pin accessories for polishing, and small metal parts after magnetic polishing. The flexible spiral conveying ensures thin-walled or easily scratched workpieces do not suffer from bumps or deformation.
Thorough Drying to Eliminate Oxidation and Blackening: The slow tumbling and heating process ensures moisture inside blind holes and threads is completely dried out. Post-cleaning workpieces treated with rust preventatives emerge with a bright surface free of water stains, allowing them to go directly to electroplating, assembly, or warehousing without secondary treatment.
High Degree of Automation, Labor Saving: Operates in sync with the main ultrasonic machine (linked start/stop), eliminating the need for manual transfer of wet materials after cleaning. The entire production line requires only one person to monitor loading and unloading, significantly reducing labor costs.
Energy Efficient, Durable, and Easy to Maintain: The insulated, sealed chamber offers high thermal efficiency, saving up to 30% electricity compared to static box-type dryers. The spiral blades are detachable, making it easy to clean out metal debris, polishing dust, and oil residue during routine maintenance.
Modular Customization to Suit Various Lines: Drying length, spiral diameter, heating power, and conveying speed can all be customized to your requirements. It can be supplied as a standalone machine or integrated into an export-ready, multi-tank ultrasonic cleaning assembly line.