1. Product Overview

The dry‑method cleanliness extraction equipment is a solvent‑free, non‑destructive particle extraction and testing instrument compliant with VDA19.1 and ISO16232 standards. Adopting the dry‑extraction principle of pure air suction plus brush stripping, the equipment requires no cleaning liquid nor wet‑process chamber. It can rapidly collect and prepare samples of loose contaminants directly from component outer surfaces, perfectly compensating for the limitations of traditional wet‑process cleanliness testing. It represents a new‑generation high‑efficiency testing instrument for process quality control and mass‑production sampling inspection in the new‑energy vehicle, precision electronics and high‑end component industries.

Designed as an integrated mobile unit, the equipment supports both precise laboratory testing and on‑site in‑situ testing at production lines. It addresses common industry pain points including difficult handling of large‑size assemblies, inability to test liquid‑sensitive parts, high costs of wet‑process testing and residual contamination risks.

2. Core Working Principle

Relying on a highly stable vacuum negative‑pressure system, the equipment generates controllable clean airflow. Equipped with dedicated brush nozzles and special‑shaped adaptive nozzles, it gently strips loose particles, dust and debris from component outer surfaces, grooves and gaps through the combined effect of air blowing and mechanical brushing. Contaminants are carried by airflow into a dedicated collection module. Via a dual‑filtration structure combining cyclone pre‑separation and precision filter membrane, particles are accurately trapped on standard analytical filter membranes. After sample preparation, the filter membranes can be directly used for gravimetric analysis, particle‑size statistics and microscopic morphology inspection. The whole process is dry, residue‑free and free of secondary contamination.

3. Core Product Advantages

3.1 Dry‑mode Non‑destructive Testing for Special‑Sample Compatibility

Performed entirely in dry mode without exposure to water or solvents, the testing perfectly fits special powder samples that dissolve in water, deteriorate with liquid contact, are prone to oxidation or agglomeration, including pharmaceutical powders, lithium‑battery materials, magnetic powders, fine‑chemical raw materials and ceramic powders. Original particle characteristics of samples are preserved to deliver authentic and reliable test data. It also supports non‑destructive extraction and testing of particulate matter on component surfaces. Samples do not need disassembly, enabling particle‑size analysis of particles attached to physical components and expanding laboratory testing scope.

3.2 High Efficiency and Simplified Test Procedures

Tedious wet‑process steps such as infiltration, ultrasonic dispersion, cleaning and drying are eliminated. Testing can start upon power‑on, and a single sample set takes only 1‑3 minutes for testing, greatly improving cleanliness‑testing efficiency. Built‑in integrated waste‑material collection and air‑purification systems prevent dust leakage during testing. No complicated post‑test cleaning is required, lowering operators’ workload and suiting high‑volume sample sampling inspection and routine quality‑control scenarios.

3.3 Intelligent Controllability and Traceable Data

Fitted with a high‑definition touch‑control operating system, the equipment allows precise adjustment of vacuum degree, airflow rate and extraction time, with one‑click saving of standard test methods. A standard‑fitted HEPA high‑efficiency protective filter system prevents sample contamination caused by vacuum‑pump backflow and ensures testing accuracy.

4. Main Application Scenarios

Widely deployed in new‑energy vehicles, auto components, precision machinery, electronics & electrical engineering, aerospace and other industries:

- New‑energy industry: Cleanliness testing for battery housings, battery trays, cooling plates and module outer surfaces

- Electronics & electrical engineering: Liquid‑sensitive cleanliness testing for PCBs, motor stators, insulating assemblies and precision electronic modules

- Large‑size assemblies: On‑site in‑situ sampling inspection for automotive chassis parts, large housings and heavy‑duty workpieces

- Process quality control: Cleanliness verification for dust deposition on production‑line tooling, jigs and turnover tools

- Quality comparison: Non‑destructive comparative testing of mass‑produced component batches and root‑cause analysis for process abnormalities

5. Compliance and Quality‑Control Assurance

Fully compatible with the latest industrial standards, the dry‑method cleanliness extraction equipment supports blank tests and particle‑rejection‑efficiency verification. It meets audit requirements from major original equipment manufacturers (OEMs) and third‑party testing laboratories, and produces compliant and valid test data for mass‑production quality control, outgoing‑product inspection and management‑system audits.