The redesign has been done to gate mechanism of opening coal tower in coking plant of Laiwu iron and steel general works.

• 莱钢焦化厂对开启煤塔的闸门机构进行重新设计，省去原复杂的压缩空气操作系统，利用碰球与滑道开闭煤塔漏嘴，简化了操作，且开、关闸门灵活