The standard form of a single-pulse dust collector is a screw conveyor at the lower ash bucket and a grid wheel feeder at the lock air. The failure rate of these two kinds of equipment is high, in particular, the shaft and the blades of the screw conveyor are in the ash hopper. The failure of the hanging bearing is difficult and maintenance is difficult.
The solution to common problems in the use of single dust collectors:
1) The feeder is replaced with a double hammer flap valve, which not only eliminates failures, but also reduces the number of running motors and lowers production costs. (For a cement mill, for example, the operating rate is 70%, and the electricity price is 0.45 yuan.) /kWh meter, 1 pulse bag filter year electricity 1380 yuan).
2) Ask the manufacturer to change the shape of the hopper as much as possible to shorten the length of the screw conveyor. When the length is less than 4m, it does not need to suspend the bearing structure, which can facilitate maintenance and maintenance. Under the premise of high plant height and meeting bagging space, a multi-hopper structure can be adopted to eliminate the screw conveyor, which can reduce equipment maintenance and save electricity. When multiple floors are arranged, the hopper is longer due to the high plant space (for pulse bag filter less than 4 rooms).
The ash bucket material for this method has slightly increased, but the decrease in operating costs will allow for the recovery of increased investment within four months.