How To Analyze And Design The Crushing Chamber Of Impact Crusher?

The crushing chamber of the impact crusher is composed of the impact plate, the plate hammer and the wall linings on both sides of the compression block. The shape of the crushing chamber is determined by the size of the feeding port, the angle of bite, the arrangement of the impact plate and the plate hammer, the lining plates on both sides, and the shape of the longitudinal and transverse sections of the lining plates. The cavity shape of the crushing chamber directly affects the main economic and technical indexes of the impact crusher, such as productivity, specific energy consumption, product particle size composition, particle shape and service life of lining plate, etc., so it has been paid attention by scholars at home and abroad, and a lot of research work has been carried out.

With the continuous development of the impact crusher, especially in recent years, "more crushing and less grinding" has been put forward; under the condition of increasing the crushing ratio of the impact crusher and improving the product quality, it is very useful to design a new type of impact crusher, or to tap the potential and transform the existing old impact crusher, and to design a good crushing chamber. According to the productivity curve of impact crusher along the height of crushing chamber, the productivity of each section along the height of crushing chamber is getting smaller and smaller from the feeding port to the discharging port, and there is a small production rate at the discharging port, so this place is the plugging point.

According to the actual horizontal stroke of each point on the surface of the impact plate, compared with the linear crushing cavity calculated by assuming the dynamic jaw balance, it can be seen that the productivity of the kind of crushing cavity at the feeding port is much higher, the productivity at the lower part of the crushing cavity, about one third of the height is much lower, and the productivity at the discharging port is the same. The reason is that the horizontal stroke of the feeding port of the crushing chamber is much larger than that of the discharging port, and there is a small horizontal stroke at the lower part of the crushing chamber about one third of its height. Therefore, in order to improve the productivity at the discharge port and increase the productivity of the impact crusher, the curved crushing chamber can be used. In order to get a good shape of the crushing cavity, the variable angle can be used to design the crushing cavity, and the angle value is gradually increased from the discharge port to the feeding port, but it must be ensured that the angle value of the feeding port is less than the limit angle value. In addition, in order to make the liner plate turn around, the two ends can be made into symmetry.

In a word, when designing the crushing chamber of the impact crusher, we should strive to meet the following requirements: increasing production, aiming at the wear rule of the lining plate, extending the service life of the lining plate as far as possible, reasonably determining the height of the crushing chamber and reducing the machine weight.

Get Price And Support

Simply complete the form below, click submit, you will get the price list and a SBM representative will contact you within one business day. Please also feel free to contact us by email or phone.

Ghana News