How A Roll Crusher Adjusts The Output Granularity

There are adjusting devices (wedge or gasket) between two rolls, with adjusting bolts fixed on the top of wedge. When adjusting bolts hang up wedge, the wedge will drive moving roll away from fixed roll. Roll crusher crushes using compression, with two rolls rotating about a shaft, towards the gap between the rolls. The gap between the rolls is set to the size of product desired, with the realization that the largest feed particle can only be 4 times the gap dimension. The particles are drawn into the gap between the rolls by their rotating motion and a friction angle formed between the rolls and the particle, called the nip angle. The two rolls force the particle between their rotating surface into the ever smaller gap area, and it fractures from the compressive forces presented by the rotating rolls.Some major advantages of roll crushers are they give a very fine product size distribution and they produce very little dust or fines. Rolls crushers are effectively used in minerals crushing where the ores are not too abrasive and they are also used in smaller scale production mining of more abrasive metal ores, such as gold. Coal is probably the largest user of roll crushers, currently, though. Coal plants will use roll crushers, either single roll or double roll, as primary crushers. Usually, these crushers will have teeth or raised forms on the face of the roll. Roll crushers used for minerals and metal ores have smooth faced rolls.

It is made of by shell, rotor, grid , blow board, hammer, bracket, lining board etc.

The cabinet on the body, by the left side after the cover, and right lateral wall composition, each part of the bolt into an even, the upper opened a charging hopper, internal with high chenban manganese steel, wear can be replaced after, the cabinet and shaft leakage phenomenon between ash is very serious, in order to prevent leakage ash, with shaft seals. The cabinet concrete foundation laid directly, and the anchor bolts fixed. In order to facilitate maintenance, adjust and change article labyrinth, both sides of the body before and after the open a manhole. In order to facilitate maintenance, replacement hammer convenient, two side also symmetrical opened a manhole.

The rotor disc by main spindle, and other machines are the stone crushing equipment, and pin shaft and other components, disk drive has six uniform distribution of pin hole, through the pin shaft will 6 8 hammer head hang up. In order to prevent the disc and hammer of the axial channeling move. Pin shaft ends with lock nut fixed. The rotor supported on two rolling bearing. In addition, in order to make the rotor in the motion of storage certain kinetic energy, avoid crushing large materials, the speed of the hammer head too large and reduce the loss from the motor peak load, and in the end of the major axis with a flywheel.

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