At present, the mineral sizers with synchronous gear forcing synchronization have the advantages of strong shear and bending crushing force, large crushing ratio, uniform discharge and screening particle size, small powder amount, forced discharge, strong production and processing capacity, and small crushing and screening energy consumption. Therefore, it can adapt to the production requirements to the maximum extent, and is a relatively ideal crushing and screening equipment. However, mineral sizers, where speed and phase are forced synchronised, in the absence of an iron remover between the crusher and the feeder, unbreakable material (such as the digging teeth of the bucket of the charging shovel) may be removed from the mineral sizers in the following manner: First stop the corresponding equipment of the feed plate conveyor, mineral sizers and discharge rotary belt conveyor;
The mineral sizers are then reversed and the iron is removed from the material in the bin. Especially for heavy equipment such as mobile crushing and screening stations, there are a large number of large pieces of material to be broken to be processed, and it is difficult to remove unbreakable large pieces of material from the material in the deep bin. From this, it can be seen that for the mineral sizers who are forced to synchronize the synchronous gears, because the double-toothed rollers are constrained by the synchronous gears, they cannot install the quick retreat mechanism. Therefore, it is quite troublesome to encounter the unbreakable material, which seriously affects the production efficiency, and is also the most troublesome problem on the production site. In the prior art, there is also a mineral sizers system with asynchronous speed and phase. Because there is no forced synchronous gear constraint between the double-toothed rollers, this mineral sizers can be configured with a rapid yield mechanism when encountering unbreakable materials. Therefore, The biggest advantage of the crushing and screening machine is that it can quickly remove the unbreakable material from the expanded discharge port through the rapid retreat mechanism and quickly resume production.
However, the problem with this mineral sizers is that although the driving motor, hydraulic coupler, reducer, rotor support bearing and crushing roller of the two tooth rollers of this crushing and screening machine are the same, the driving characteristics and damping characteristics of the transmission system of the two tooth rollers are definitely different due to manufacturing installation errors. And mineral sizers box stiffness is very large, fixed with bolts on such a frame, the two tooth rollers almost equivalent to their own independent operation: the speed of the two tooth rollers opposite each other and the corresponding tooth phase difference is inevitable. Due to the existence of the phase difference of the gear roll operation, and the trend of continuing to accumulate and expand, the gear distribution law under the condition that the speed and phase of the double-gear roll are synchronized is destroyed. It will inevitably lead to the production and processing capacity, crushing ratio that is, the ability to break large pieces, the uniformity of the discharge particle size and the amount of powder, the bearing capacity and wear resistance of the crushing teeth, energy consumption and other characteristics of the crusher are worse than the technical performance of the gear forced synchronous crushing and screening machine.
