Jaw crusher is a common crushing equipment in a variety of mineral production lines, usually used as a rough break, mainly crush large pieces of stone, jaw crusher is often death because of improper use of the phenomenon. Therefore, in the course of operation we need pay attention to a uniform cutting, hardness and other factors material.
The main factors affecting the general jaw crusher are nip angle and number of revolutions. Dynamic nip angle is the angle between the jaw and the fixed jaw. According to calculate the maximum nip angle is up to 32 degrees. The actual use are less than 25 degrees, usually about 18-20 degrees. If the nip angle is too large, it will make up the ore crushing cavity extrusion, resulting in injury or damage to other equipment, and with the nip angle increases (broken than increase) decrease in productivity. Adjust the size of discharge port, it changes the size of the nip angle.
In real life, according to the row of ore particle size requirements to adjust the size of discharge opening. Therefore, to ensure product granularity request, try to enlarge the port of discharge is reasonable. The mine mouth size can be adjusted by adjusting the block, when adjusting the size of discharge port Note that broken relationship between the ratio and productivity.
Within a certain range, increasing the number of revolutions of the eccentric shaft, can improve the production capacity of the crusher, but also increases the weight of the ore crushing unit power consumption. If the speed is too big, the crushing chamber has been crushed ore is discharged too late, and clogging phenomenon, but so that production capacity decreased power consumption increases, therefore, should have a jaw crusher optimum number of revolutions.