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气力输送粉末输送泵电磁振动喂料器的结构及原理

Time: 2016/8/10 8:39:36

    气力输送粉末输送泵的电磁振动喂料机主要由喂料槽、电磁激振器及减振器三部分组成。
    喂料槽的作用是承接料仓下来的物料,再经电磁振动将物料输送给下一个受料设备。气力输送粉末输送泵电磁激振器的作用是使喂料槽产生振动,其主要部件有连接叉、衔铁、弹簧组、铁芯和壳体。连接叉和槽体固定在一起,通过它传递激振力给喂料槽;衔铁固定在连接叉上,和铁芯保持一定间隙;弹簧组起储存能量的作用;铁芯则是产生电磁场的关键部件;壳体主要是用来固定弹簧组和铁芯,也起平衡质量的作用。
    减振器通常有螺旋弹簧组和橡胶弹簧组等两种。它的作用是减少传递给安装基础或安装框架的振动力。气力输送粉末输送泵中的激振器电磁线圈的电流一般是经过半相半波整流的。正半周,有电压加在电磁线圈上,因而有电流通过,在衔铁和铁芯之间产生一对大小相等、相互吸引的脉冲电磁力,这时喂料槽向后运动,激振器的弹簧组发生变形,储存了一定的势能。在负半周,线圈中无电流通过,电磁力消失,弹簧组储存的能量被释放,衔铁和铁芯朝相反方向离开,使喂料器向前运动。如此,电磁振动喂料机就以交流电源的频率,作每分钟3000次的往复振动。
    气力输送粉末输送泵电磁振动喂料机的主要特点:无相对运动部件,无机械摩擦,无润滑点,操作简单;由于物料是跳跃运动,与槽体无相对滑动,所以槽体磨损很小;设备运行费用较低;适用于输送高温、磨损性大的以及有腐蚀性的物料;容易实现密封输送;但不适用于粘湿性的物料输送

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