PREVENTING METHOD FOR CORROSION OF INSIDE WALL OF FUNNEL

摘要

PURPOSE:To prevent the corrosion of the inside wall of the funnel by providing drain grooves on the inside wall of the funnel and taking out the drain outside the funnel. CONSTITUTION:The drain grooves 7 are provided at every proper height of the inside wall 5 of the funnel and thereby the drain flowing down along the inside wall of the funnel is taken midway outside the funnel 3 without letting the same flow down to the bottom part of the funnel 3.