1. Overall Core Logic

The machine adopts one independent fully closed cleaning chamber. All processes including cleaning, rinsing, solvent recovery and vacuum drying are completed inside the same airtight chamber. The whole operation is isolated from ambient air. Organic solvent dissolves grease, matched with a distillation regeneration system for solvent recycling. The negative-pressure fully closed structure prevents solvent vapor leakage to meet VOC environmental control standards. The equipment integrates six modules: ultrasonic immersion cleaning, vapor rinsing, spray washing, multi-stage filtration, vacuum distillation recovery and vacuum drying. A full cleaning cycle can be finished after one-time workpiece loading.

2. Step-by-Step Working Principle

Step 1 Sealed Workpiece Loading & Chamber Locking

Place workpieces into fixtures inside the chamber, close the door and activate safety interlocks to form a completely sealed space isolated from outside air, fundamentally preventing solvent vapor diffusion. An independent internal circulation system is formed with no gas exchange channels to the outside.

Step 2 Ultrasonic Immersion Degreasing

Fill the chamber with clean solvent to fully submerge workpieces. Ultrasonic vibrators installed at the tank bottom generate tiny cavitation bubbles through ultrasonic cavitation effect. The bubbles burst inside slits, blind holes and threads to strip cutting oil, drawing oil, cold-forging grease, polishing wax, release agent and other heavy contaminants. The solvent dissolves mineral grease and resin stains efficiently by the principle of like dissolves like.A built-in circulating filter continuously removes metal filings and impurities to slow solvent contamination.

Step 3 Solvent Vapor Rinsing for Mirror-Class Cleanliness

The heating unit vaporizes pure solvent to form saturated solvent vapor inside the chamber. When cold workpieces contact hot solvent vapor, vapor liquefies on the part surface to form a high-purity solvent film that flushes away contaminated residual solvent and fine dust. Unlike liquid rinsing, vapor carries no impurities and avoids secondary contamination, eliminating water marks and residual stains for parts requiring high cleanliness before electroplating and precision assembly.

Step 4 Optional High-Pressure Spray Refining

High-pressure pure solvent sprays targeted blind spots and stacked gaps of complex structural parts to remove embedded contaminants hard to reach by vapor, greatly improving cleanliness of deep holes and intersecting grooves.

Step 5 Vacuum Distillation & Solvent Regeneration (Core Circulation System)

Dirty solvent mixed with grease and impurities after cleaning is automatically delivered to the built-in vacuum distillation unit. Under negative pressure and low temperature, solvent vaporizes at a reduced boiling point, while grease, metal debris and heavy pollutants remain at the bottom of the distillation tank. Vaporized pure solvent is liquefied via a condensing system and flows back to the chamber for repeated use.The system realizes infinite solvent recycling and drastically cuts solvent consumption, with waste oil separated and collected centrally.

Step 6 Vacuum Drying Inside Chamber for Zero Residue

After draining liquid solvent from the chamber, a vacuum pump extracts internal air to create a high negative-pressure environment. The boiling point of residual solvent drops sharply under low pressure; trace solvent trapped in workpiece cavities and gaps vaporizes rapidly, extracted by the vacuum pump and recycled through condensing pipelines.Negative-pressure drying operates in full sealing with zero solvent gas emission. Finished workpieces are thoroughly dried without residual solvent, requiring no air-drying and producing no odor or VOC leakage.

3. Environmental Protection Principle of Fully Closed Design

1. Full negative-pressure operation: Internal chamber pressure is lower than atmospheric pressure. Even tiny door gaps only draw outside air inward, with zero outward solvent vapor leakage.

2. Full-range condensing recovery: Multi-stage condensing coils installed on the chamber top and distillation system liquefy and recover all volatile solvent vapor.

3. Inert gas protection (high-end model): Nitrogen filling isolates oxygen to eliminate flammability risks of solvent, suitable for workshops with strict safety standards.

4. Summary of Core Cleaning Mechanisms

1. Solvent degreasing: Grease dissolution based on like-dissolves-like principle of organic solvent;

2. Cavitation stripping: Ultrasonic cavitation removes solid impurities trapped inside gaps;

3. Vapor replacement: High-purity condensed vapor flushes contaminated solvent residue on surfaces;

4. Distillation circulation: Low-temperature vacuum distillation separates waste grease for solvent reuse;

5. Negative-pressure drying: Low-pressure vacuum vaporizes and eliminates trace residual solvent;

6. Full-chamber negative-pressure sealing: Structural design restricts VOC emission to comply with environmental regulations.