Small negative pressure airflow sieve

I. Introduction:
The Navector small negative pressure airflow sieve is specifically designed for sieving low-density, easily agglomerated fine particles. It solves problems like agglomeration, mesh blinding, and static adsorption during powder sieving. Utilizing aerodynamic sieving, it prevents agglomeration and ensures good sample dispersion. It is compatible with test sieves having apertures of 10 microns and above. The sieving process is gentle and requires no non-mechanical sieving accessories. Average sieving time is 2-3 minutes. It can be connected to a manually adjustable industrial suction device or optionally equipped with an automatic suction device, providing continuous airflow to ensure repeatability of the sieving process.

II. Working Principle
A vacuum cleaner is connected to the sieving instrument, creating negative pressure within its inner chamber. Due to the pressure difference, strong airflow forms at the nozzle. This airflow jets onto the sieve mesh surface and is then drawn through the sieve apertures. Consequently, samples smaller than the aperture size follow the airflow through the apertures into the vacuum cleaner or cyclone collector. The airflow helps disperse particles and cleans the sieve mesh.

III. Equipment Advantages

• Utilizes air jet technology to reduce agglomeration of fine particles
• Repeatable sieving results
• Adjustable nozzle speed for more flexible sieving
• Manual operation (standard) or automatic pressure regulation (optional)
• All parameters digitally adjustable (time, negative pressure, jet speed)
• Integrated silencer for quieter operation
• Connects to a vacuum cleaner to create a negative pressure environment
• Meets all relevant ISO9001 standards for measuring equipment
• Ergonomic design for easy operation and maintenance-free use

 

IV. Equipment Parameters

Parameter	Value/Specification
Usable Particle Size Range	3 μm ~ 4mm
Max. Load	100g
Max. Levels	1 (Level 2 requires cyclone collector)
Nozzle Speed	5-55 RPM
Time Setting	0-99 minutes
Extraction Pressure	2000-9999 Pa / 20-99 mbar / 0.3-1.45 psi
Storable Parameter Sets	9+ Quick Start
Compatible Sieve Diameter	φ200 mm / φ203 mm
Sieve Stack Height	25 mm / 50 mm
Dimensions (W x D x H)	460 x 288 x 305 mm

V. Application Fields
Pharmaceutical materials, Chemicals, Chemicals, Plastics, Rubber, Minerals, Powder coatings, Pigments, Toners, Ceramics, Food, etc.