Collision type air current crusher, pulverized body production device and production manner of toner

摘要

PURPOSE:To prevent the fusion, flocculation, coarse graining, etc., of pulverized materials and to additionally efficiently pulverize the materials by providing an impingement member in a pulverization chamber and setting the shortest distance between the side wall of the pulverization chamber and the marginal end of the impingement member shorter than the shortest distance between the front wall of the pulverization chamber and the marginal end of the impingement member. CONSTITUTION:An acceleration pipe 1 for transporting and accelerating the materials to be pulverized by a high-pressure gas and the pulverization chamber 12 for pulverizing the materials to be pulverized are provided. A supply port 4 for the materials to be pulverized into the acceleration pipe 1 is disposed at the rear end of this acceleration pipe 4. The impingement member 10 having an impingement surface 16 installed to face the opening plane of the outlet of the acceleration pipe 1 is provided in the pulverization chamber 12. Side walls 14 for further pulverizing the materials pulverized by the impingement member 10 by impingement are disposed in the pulverization chamber 12. The shortest distance between the side walls 14 and the marginal end 15 of the impingement member 10 is set shorter than the shortest distance between the front wall 17 of the pulverization chamber 12 and the marginal end 15 of the impingement member 10. Consequently, the materials are additionally efficiently pulverized.