Cross-beam protectors are a simple to fit, low cost method to protect cross-beams from impact and abrasive wear. No stripping, sandblasting, grinding or toxic adhesives are required for installation, and for many common screen boxes there is no need to remove the screen cloths.
Cross-beam wear protectors and self-cleaning protectors are available for various size universal beams, box section beams and custom designs for exciter tubes.
A south-east Queensland hard rock quarry, with a turnover of 1.5 million tonnes per annum, was continually plagued by fines build-up on the cross-beams on several of its 6m x 2.4m vibrating screens.
{{quote-A:R-W:300-Q:"Worn screen cross-beams can be time-consuming and costly to repair."}}According to Jake Sibenaler, the quarry’s processing supervisor, the finer material dust would “cause us various operational issues”.
These included damage to screen media and premature screen cloth failure, lost screening area (about five per cent) and reduced screening efficiency.
It also caused OHS headaches for the maintenance team, Sibenaler said, “as they would have to get into the middle/bottom decks to chip away the dust at least once a week. Also, the additional weight of the build-up was causing the screen to operate abnormally”.
Nepean Rubber was already supplying Sibenaler with screen media and other rubber liners to protect the high wear screens’ cross-beams. He felt the company could assist him with a solution to his fines build-up problems.
Sibenaler decided a beam protector with a soft, flexible top had the most promise.
“The flexible top protectors were installed and fastened with cable ties each time a screen cloth was replaced, making it a very quick and easy task to carry out,” Sibenaler said. “Since installing the self-cleaning beam protector, it has been maintenance-free. We check occasionally for signs of wear, but to date we haven’t seen any.”
Source: Nepean Rubber & Plastics