| 摘要 |
<p>PURPOSE:To perform classification of higher precision and to effectively and stably produce fine powder having the minute distribution of particle size in a pneumatic classifier for classifying raw material powder at least into a coarse powder region and a fine powder region by installing a scattering plate in a raw material feeding pipe. CONSTITUTION:When raw material powder is introduced into a division classifier 1 through a raw material feeding pipe 16, in the raw material feeding pope 16, it hits against a scattering plate 7, causing its coagulation and adhesion to be cracked, allowing it to be disentangled. After the raw material powder is moved to behind a scattering plate 7 in its sufficiently scattered state, it receives straightening action and is introduced into a division classifier 1. The raw material powder fed into a classifying region of the division classifier 1 flies about in a curved line 30 as shown by the broken arrow by the Coanda effect due to the action of a Coanda block and the action of gas flowing in at that time to classify it into large particles, medium particles and small particles according to their particle diameter.</p> |
