铸铁车间除尘实践

Dust Abatement Practice of Foundry Shops

根据清理车间粉尘的性质，设计制作了外滤、机械震打式除尘器集中除尘，不仅减轻布袋的负担，还提高了除尘效率；在除尘器顶部设6个密封天窗，可方便地检修和更换布袋；另外，采用震打清灰，结构简单，造价低廉。砂处理工部采用离线脉冲反吹布袋式除尘器，利用PLC程序控制定时分室逐管反吹清灰，结果表明：喷嘴口Ф18mm、0．5～0．6MPa压力下清灰效果最好。自制了全封闭的SL5T-720湿法冲天炉除尘器，集冷却、除尘、滤气于一身，结构紧凑，占地面积小，运行后彻底解决了以往满院烟尘、头上掉炭渣的问题，环保效果十分显著。

Based on the character of the dust in the cleaning shop, an outdoor mechanical vibration-beat duster was designed to concentrically catch dust that not only reduced the burden of the fabric bags, and also increased the dusting efficiency. 6 louvers were set on the top of the duster through which the fabric bags can be easily repaired or changed. Besides, the vibration-beat duster has advantages of simple configuration and low cost. The line-leaving duster used in the sand treating section is of the pulse type, and equipped with bags to be reversely blown to clean the dust. By using PLC control, every dust catching chamber is to be cleaned termly, and every tube is to be reversely blown one by one to clean up their dust. The application result showed that the best dust-cleaning effect was obtained with Ф 18 mm nozzle and pressure of 0.5-0.6 MPa. For the cupola a self-made full-closed SL5T-720 type wet duster was adopted. The duster has a compact configuration and acts simultaneously as the cooler, duster and gas-filter. The application result indicated that the duster has excellent environment protection effect.