武汉恒斯源液压机电设备有限公司
 
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湿污泥中混入的固体杂物会对螺杆泵的橡胶材质定子造成损坏，所以确保杂物不进入泵的腔体是很重要的，很多污水厂在泵前加装了粉碎机，也有的安装格栅装置或滤网，阻挡杂物进入螺杆泵，对于格栅应时清捞以免造成堵塞。。

新闻：R902064041 A4VG90EP2DT2/32R-NZX02F001SH-S ：http://www.jdzj.com/jdzjnews/k3_10814998.html