3D Printing Metal Material Powder Inert Gas Nitrogen Protection Jet Mill Classifier

Working Principle:

The classification system consists of an automatic feeding system, a classifier, a dust collector, and an induced draft fan. Under the suction force of the fan, the material moves at high speed from the feed inlet at the bottom of the classifier to the classification zone along with the upward airflow. In the classification zone, the strong centrifugal force generated by the high-speed rotating classification turbine separates coarse and fine materials. Fine particles meeting the required particle size pass through the gaps between the classification wheel blades and are collected by a cyclone separator or dust collector. Coarse particles, carrying some fine particles, lose their speed upon colliding with the wall, descend along the cylinder wall to the secondary air inlet, and undergo intense elutriation by the secondary air, which separates the coarse and fine particles. The fine particles rise to the classification zone for secondary classification, while the coarse particles descend to the discharge port for removal.

This airflow classifier is specifically designed and developed for materials that are flammable, explosive, or prone to oxidation. It is based on conventional airflow classifiers and vertical turbine high-precision classifiers, with improvements such as altering the airflow composition, modifying the air intake and exhaust pipelines, and enhancing the sealing process of the equipment. The entire system uses inert gas as the working fluid medium. The complete set of equipment consists of an inert gas source, an oxygen content tester, an intake pipeline system, a closed-loop feeding system, a vertical turbine classifier, an induced draft fan, a sealed replacement discharge valve, an anti-static pulse reverse-jet dust collector, an inert gas replenishment device, and a cooler. The outlet of the induced draft fan is connected to the inlet of the classifier, forming a closed-loop inert gas circulation system.