Air grader is one of the main equipment in the particle board production line, used in the production line to screen the shavings by air suspension and flow process, sorting out the core (surface) layer of shavings that meet the needs of the process, and the unqualified rough shavings are sent to the grinder for re-processing, while selecting heavy pollutants, such as sand, stone and so on.

The air grader machine is mainly composed of four parts: air grader body, fan , cyclone separator , and pipeline. The working principle is as follows: The separator suspension room is in a negative pressure state due to the suction effect of the fan. After the mixture to be sorted enters the suspension chamber, under the action of air flow, the flow in the suspension chamber causes a boiling state, and the fine material in the suspension state flows with the air flow, through the pipeline, and is separated in the cyclone separator 3