Equipment needs
maintenance. Well, how should we clean the roller surface of corn flour milling
machinery?
When rollers are working, some powdery stock
may adhere to the roller surface. The higher the stock moisture is, the smaller
the roller gap is, the adherence will be serious. It’s more the case for smooth
rollers which have strong pressing and milling effect and poor shearing effect.
To ensure the mechanical and technical performance of corn flour milling
machinery, a cleaning device is necessary to keep the normal working status of
the roller surface. At present, a brush close to roller surface by a certain
pressure is used to clean tooth roller and smooth roller. The materials for the
brush hair include palm fiber, bristles, feather’s hollow shafts, nylon,
Chinese Iris roots, etc. Among these choices, Chinese Iris roots are the best
as they are non-toxic and flavorless.
At the early stage, corn flour milling
machinery adopted scrapers to clean the surface of smooth rollers. Scrapers
were made with alloy steel plates. The contact line of the scraper and roller
should be parallel to roller’s axis and the contact pressure should be uniform
and proper along the whole contact length. The cleaning wouldn’t work as long
as there was a slight deviation. As the scrapers had high requirements for
manufacture and operation techniques, they have been replaced by brushes.