| 摘要 |
The purpose of the present invention is to provide an air classification device, which classifies aggregates entering a main body, through vibration and circulation of air, thereby efficiently collecting micro particles of classified aggregates, and improving the accuracy of classification so that sand having a user′s desired size can be precisely classified. According to the present invention, the air classification device comprises a first air inlet port formed at the upper part of a main body, and into which first air, which firstly classifies aggregates input into an aggregate entrance, flows; a connection pipe connected to a dust collector on one side of the middle part of the main body and collecting classified micro particles to the dust collector; a second air inlet port formed between the connection pipe and a discharge port, and into which second air, which secondly classifies the aggregates falling after the first classification, flows; a vibration unit installed at the second air inlet port where the second air enters the main body, and vibrating the firstly classified aggregates to be thirdly classified; and a circulation fan installed in the center of a chamber so as to fourthly classify the aggregates while circulating along the inner wall of the chamber projected outward on the other side of the middle part of the main body. As such, the present invention is to provide an air classification device, which can efficiently collect micro particles of classified aggregates, and improve the accuracy of classification so that sand having user′s desired size can be precisely classified. |
