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这是由瑞典P·约翰发明的一种用管道输送物料的装置,在美国取得了专利。该装置由螺旋喂料器喂料,物料经由料柱闭风段进入输料管。闭风段是一个沿输送方向通流截面逐渐增大的渐扩管,在其出料端引入压缩空气,由于气垫作用,物料在渐扩管中很易形成连续不断的料柱,对闭风段的进料端起密封作用,防止反风。而在闭风段的出料端,料柱又连续不断地被压风打散,形成气料混合流吹送入输料管,在喷头附近加水喷出。
This is a patented device invented by P John of Sweden for piping materials. The device is fed by a screw feeder, the material enters the feed tube through the closed section of the material column. Closed wind is a cross-section along the conveying direction of the gradual expansion of the expanding pipe, the discharge end of the introduction of compressed air, due to the role of air cushion, the material in the gradual expansion tube is easy to form a continuous column, Segment of the feed end from the sealing effect, to prevent the wind. In the closed section of the discharge end, the continuous column of material is forced to beat the wind, the formation of mixed gas flow blowing into the feed tube, spraying water near the nozzle.