由大连工学院设计、温州矿山机械厂制造的ND500型内斗式提升机于1984年通过鉴定,并已投入批量生产。1985年荣获机械工业部科技成果三等奖。本机可广泛用于冶金、耐火材料、建材、化工、港口码头、矿山、轻工、食品、粮食等部门,用于垂直方向和大倾角时连 Designed by Dalian Institute of Technology, the ND500 internal bucket elevator manufactured by Wenzhou Mining Machinery Factory passed the appraisal in 1984 and has been put into mass production. In 1985 won the third prize of scientific and technological achievements of the Ministry of Machinery Industry. The machine can be widely used in metallurgy, refractory materials, building materials, chemicals, port terminals, mining, light industry, food, food and other departments for the vertical direction and a large angle even