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１．原PYB型圆锥防尘结构与工作过程简介动锥安装于球面轴承座上，其上装有灰铸铁铸成的球形圈（PYB９００型球形圈重７０kg）。球面轴承座上有两道环形贮水槽，循环水自内槽溢流入外槽。防尘球形圈下缘插入内槽水面中，球面轴承座上装有防尘橡胶圈，与球形圈形成一道环形缝隙?
1. The original PYB cone dust structure and working process Brief introduction Dynamic cone mounted on the spherical bearing seat, which is equipped with a gray cast iron spherical ring (PYB900-type spherical ring weight 70kg). Spherical bearing seat has two annular sump, circulating water overflow from the inner tank into the outer tank. Dust ball ring into the inner edge of the lower edge of the water surface, spherical bearing seat with a rubber dust ring, and the spherical ring form an annular gap?