我厂旧砂再生是采用干法再生,其示意结构如下图所示,全套设备按装占用面积只有21米~2,生产效率1.5米~3/时,将干燥的旧砂砂团破碎后,用振动筛将铁块、废物筛出。筛好的旧砂由斗式提升机提升至旧砂分离箱3,旧砂在分离箱内顺着可调节的活叶片14下落。在下落的过程中,由抽风机4将旧砂中的灰尘和细砂抽至旋凤除尘器6内,灰尘由旋风除尘器的上端顺着灰尘排出管8至水池7中。细砂由旋凤除尘器下端排出。在旧砂分离箱中由于受风力大小不同的影响能将旧砂分成为大粒,中粒和细粒无尘砂。由于使用了这套旧砂再生设备,在生产上带来以下几点好处: 1.旧砂经处理之后,能分成大粒、中粒和细粒砂三级,这样能合理地按排配砂种类, I plant the old sand regeneration is the use of dry regeneration, the schematic structure shown below, a full set of equipment installed by the equipment area of ​​only 21 m ~ 2, the production efficiency of 1.5 m ~ 3 /, the dry sand grit crushed, Use shaker to scrape iron and waste out. The screened old sand is raised by the bucket elevator to the old sand separation tank 3, and the old sand falls down the adjustable vane 14 in the separation tank. During the process of falling, the dust and fine sand in the old sand is drawn into the cyclone 6 by the exhaust fan 4, and the dust is led by the upper end of the cyclone along the dust discharge pipe 8 to the water tank 7. Fine sand is discharged from the lower end of the rotary dust collector. Old sand can be divided into large, medium and fine dust-free sand in the old sand separation tank due to the influence of different wind forces. As a result of the use of this set of old sand recycling equipment, the production brings the following advantages: 1. The old sand after treatment, can be divided into large, medium and fine gravel three, so that can be arranged according to the type of sand ,