Arrangement for dry reconditioning of used foundry sands
    1.
    发明授权
    Arrangement for dry reconditioning of used foundry sands 失效
    二手铸造砂的干式修复安排

    公开(公告)号:US5421462A

    公开(公告)日:1995-06-06

    申请号:US39308

    申请日:1993-07-12

    CPC分类号: B22C5/10

    摘要: An arrangement for the dry reconditioning of used foundry sands in which used sand is fluidized with air or an air/gas mixture and flung against a precipitator to separate and remove substances covering sand particles. The precipitator has several planar baffle elements arranged in concentric circles around a conical deflector. A jet of used sand/air directed toward the deflector expands radially outwardly toward the baffle elements so that the jet is decelerated several times by the deflector and the baffle elements and, in a confined space, split into individual streams and swirled to provide heavy mechanical friction between sand particles and between sand particles and the baffle elements.

    摘要翻译: PCT No.PCT / EP92 / 01858 Sec。 371日期:1993年7月12日 102(e)日期1993年7月12日PCT提交1992年8月13日PCT公布。 公开号WO93 / 03872 日期1993年3月4日。对于使用砂子的空气或空气/气体混合物流化的二手砂轮进行干式修复的布置,并且用于分离和去除覆盖砂粒的物质。 除尘器具有围绕圆锥形偏转器布置成同心圆的多个平面挡板元件。 指向偏转器的二次砂/空气射流朝向挡板元件径向向外扩张,使得射流被偏转器和挡板元件减速几次,并且在密闭空间中分裂成单个流并旋转以提供重力机械 砂粒与砂粒与挡板元件之间的摩擦。