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1.基本原理: 气流烘砂,是把潮湿或受冻的新砂,在一定热风速度的作用下、飘浮于管道的灼热气流中进行干燥.我厂利用燃烧原煤及柴油而取得热风.它的主要工艺流程是: 定量→松散及给料→悬浮及烘烤→风砂分离→卸料→除尘及冷却→排风. 湿砂或冻砂(见图1和图2)通过砂斗1进入螺旋输送机2进行定量,然后由松散给料机3把粘结状态的湿砂松散,并抛掷于溜嘴内,随防堵孔4而入的风力作用进入喉管5,在由煤炉或油炉6鼓来的热风的作用下,克服了整个砂流沉降压力,而使砂悬浮于管道中.随着热气流运动的方向,砂向前移动.由于砂
1. Basic principle: Air-drying sand is drying damp or frozen fresh sand under the action of certain hot-air velocity, floating in the glowing air flow in the pipeline. Our factory makes use of burning raw coal and diesel to obtain hot air. The process flow is: Quantitative → Loose and Feeding → Suspension and Baking → Sand Separating → Discharging → Dusting and Cooling → Exhausting. The wet or cold sand (see Figure 1 and Figure 2) enters the auger through the sand hopper 1 Machine 2 for quantitative, and then by the loose feeder 3 to loose wet bonding state, and thrown in the mouth, with the anti-blocking hole 4 into the wind pipe into the throat 5, by the coal or oil furnace Under the action of hot air from 6 drums, the pressure of sedimentation of the entire sand flow is overcome and the sand is suspended in the pipeline. As the flow of hot air moves, the sand moves forward.