Parameter Selection and Calculation of Impact Crusher

The impact crusher is essentially composed of the overlap of two double roll crushers with the same specifications. This article will talk about the structure of the 900 × 700 impact breaker. In terms of the structure of the roller and the spring safety device, there is no difference between the impact crusher and the roll crusher. However, the roller shaft of the impact crusher is supported at the automatic aligning sliding bearing. The transmission means of the impact crusher is composed by two motors, two reducers and two sets of pulleys dirve.
The motor drives the rotation of the rollers by the reducer and the coupling. One of the motors drives the rotation of the roller at the top right, while the other motor drives the rotation of the roller at the bottom left. The other end of the spindle of each roller is equipped with a pulley. The pulley of the right upper roller drives the pulley of the right lower roller so that the right upper roller rotates. The lower left roller pulley drives the pulley of the upper left roller so that the upper left roller can rotate. Since the travel direction of the movable bearing is perpendicular to the travel direction of the belt dirve, the variation of the tensile force is not large when the movable bearing moves. After the materials are crushed by the upper and lower rollers, they are discharged out of the machine from the lower part. There are two sets of cutting device which is made of the turning roll skin. When there are grooves and scallops on the surface of the roller after is worn, you do not need dismantle the roll skin, because you can directly use the cutting device to trim the roller by using the cutting device to ensure the smoothness of the surface of the roll skin surface and reduce the number of stop time to improve the operation rate of the machine.
The main parameters of the impact crusher include the nip angle, feed particle size, roller diameter, the number of revolutions of the roller, the productivity and the motor power and so on. We can use the above parameters to calculate the nip angle. In order to simplify the calculation, we can assume the materials block is spherical. In this way, we can reasonably calculate the parameters of the crusher to improve the working efficiency.
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