Shougang Mining Company Sinter plant to take an automatic control means to change the manual control of dust butterfly, and improve the level of field management. Shougang Mining Company Sinter plant to take a new road to industrialization, the use of automated, information technology, change the traditional management thinking on-site, canceled the belt custody positions. However, due to unmanned raw material workshop belt and dust removal sites, flux feeding system on and off more frequently, the existence of dust butterfly valve manual control means out of sync with the belt system does not match, do not match, belt boot dust butterfly valve can not be timely Open, shut down the machine with dust butterfly valve can not be shut down in time, resulting in a waste of air volume dust, dust effects on the scene. To fundamentally solve the dust butterfly valve switch and belt system operation is not synchronized. Sinter plant design and manufacture of electric push rod butterfly valve, and installed in the dust pipe, the electric push rod control circuit connected to the belt machine operation control box, to achieve the dust butterfly valve and belt synchronization of automatic control. According to the new control mode, after the belt conveyor starts, the dust-proof butterfly valve will open automatically at random; when the belt conveyor stops running, the dust-proof butterfly valve will be automatically closed. Received a good run results, to ensure the smooth production.