MAINTENANCE
To get high efficiency & trouble free belt conveying system, it is important to perform perrodre belt and C system maintenance programme after belt installation.
CLEANING & REMOVAL OF BUILD-UP
* To maintain a better operational belt conveying system, a good, periodical housekeeping to the belt is essential.
* A build-up of material on pulleys & idlers will cause belt misalignment. If it is to mode, belt will strongly touch or even run over the steel frames of conveyor line. This will damage belt seriously.
* No one shall be allowed to attempt to remove material build-up unless the conveyor has been stopped completely.
* Scruber should be work properly to clean the pullage surface and belt on returning side.
SPILLAGE OF MATERIAL
* While running, materials probably will spill and accumulated under the belt. Most of these accumulations can be removed and cleaned. But a special attention still has to be paid to the loading zone for preventing the spillage to touch the idlers which can cause further damage.
* If idlers are frozen by spillage, the shells of idlers will become sharp because of continuous abrasion with the running belt. This will badly damage the couldrubber & carcasses of belt. Meanwhile, the power consumption will be increased, as jammed idlers and pulleys are blocked by spillage.
IMPINGEMENT
* In tail pulley & take-up zone, impingement after occurs often between belt and pulleys. Once this situation has occurred, belts carcasses as well as pulley’s surface will be broken as parts of their tensions now are over the rated tension of the belt. This impingement will be varnished only until the material build-up is broken or disappeared. Same damages to the belt in areas of jammed idlers & bending pulleys can happen when a material build-up sticking on the belt’s carried side.
* A proper management to the loading will be helpful for preventing the impingement.
(a) Accurate surcharge angle and loading.
(b) appropriate match to the running direction between loading speed and belt speed.
(c) tro to catch spillage if necessary.
JUNCTION POINTS PROTECTION
* For trough idlers, the strain that occurs in the Junction Points will be a dangerous influence to the belt and mire it into the space of these point. This influence will cause belt a longitudinal damage to the belt and separate it into plies in the zone that is corresponding to the Junction Points tracing area. Air & sand will easily enter into the belt from these damaged points. In the end, parts of belt will mire into the idlers and willbe destroyed by conveyor machine before they are separating along the tracing area.
* Many factors will cause a strain occurring in the Junction Points. Larger the angle of troughing idlers, the more strains will occur.
Transition Distance also is an important factor. If this distance is not big enough, belt will suffer strong strains in these points and probably the belt will be destroyed in a very short time.
* Minimsatun of strain is possible, if the angle can be reduced. |
