Crusher Pai compound is greater than 3 mm particle size of the total content Pai feed more than 50 percent of smashing machinery. Operations often broken by feeding and nesting into the size of coarse granularity broken, the broken and minor.

Commonly used machinery have broken jaw crusher, cycles Crusher, cone crusher, roll crusher, hammer crusher and counterattack breakers, and so on several.

1. Jaw crusher is to use two of the jaw plate bending and extrusion materials, rough broken or broken in various hardness materials broken machinery. Its fixed jaw broken by the agency board and movable jaw plates formed when two plates near the jaw broken when materials

shall, when the two left jaw plate nesting population is less than expected from the bottom of the block. In addition, to satisfy the needs of different size markers compensation and the requirements of the jaw plate wear, but also created nesting population adjustment device, usually at the plate in the elbow between the rack and release after adjusting pads or wedge iron. But in order to avoid damage due to the replacement of broken parts and affect production, may also have hydraulic device to achieve insurance and adjustments. Some jaw crusher also directly driven by hydraulic transmission fixed jaw plates, in order to complete the broken material movements. These two types of devices used hydraulic transmission jaw crusher, often collectively referred to as hydraulic jaw crusher.

2. Gyratory crusher is used within the cone shell cavity in the cyclic movement of materials have squeezed split and bending role broken all kinds of coarse ore or hardness of the rock crusher large machinery. Broken cone with the top of the spindle bearing beams in the central part of the bush, its lower end is placed on the eccentric hole in the bushings. Bushings rotation, broken cone machines around the center of its campaign for the eccentric cycle is broken for the action, the working efficiency higher than that of the jaw crusher. By the early 1970s, large-scale cycles per hour has broken machine can handle materials 5,000 tons, the largest feeding diameter up to 2000 mm.

Gyratory crusher used in two ways to achieve nesting population adjustment and overload insurance: First, the use of robotics, are top of their spindle nut adjustment, the adjustment nut rotation, Cone can be dropped or broken up, I followed the nesting change large or small change, overloading, cut off transmission belt pulley on the insurance sales to achieve insurance; second way is the use of hydraulic cycle hydraulic breakers, hydraulic-cylinder located in the main axis of the plunger, the change under the plunger hydraulic oil can change the size of the upper and lower cone crusher location, thus changing nesting population size. Overloading, downward pressure on the spindle, forcing the plunger into the hydraulic oil in the hydraulic system of accumulator, broken cone ensuing decline to increased nesting mouth with material from the cavity into the crusher non-crusher of (iron, wood, etc.) in order to achieve insurance.

3. Cone crusher with the working principle of the same cycle crusher, but only if broken or minor operations in the broken machinery. , Minor operations nesting uniformity of the size of the general operating requirements than the rough broken high Therefore, in the crushing chamber should be provided for a section of the lower part of the parallel, at the same time, but also speed up the cycle broken cone speed to materials in parallel more than once the region by extrusion. Broken minor operations in comparison rough broken operations, resulting in broken loose after the larger size will increase.

To prevent crushing chamber may cause obstruction, no increase in the nesting population to ensure that the necessary markers on the premise of size, the increase must be broken through the bottom cone diameter to increase the overall nesting section.

Cone Crusher markers mouth smaller, mixed with the compound of the non-broken easily cause of the accident, and because of minor operations on the nesting size demanding to be worn liner timely adjustment nesting mouth, thus Cone Crusher insurance and broken coarse adjustment device operating more than necessary. Simon spring-insurance cone crusher overloading, forcing cone shell and its own compression spring rise to increased nesting mouth, from the non-broken of. Nesting mouth on the adjustment to adjust sets, containing solid rotation of the shell can be set by adjusting the thread of its cylindrical shell driven upward or downward in order to change the nesting population size. The hydraulic cone crusher with the way insurance and adjust hydraulic breakers in the same cycle.

4. Roll crusher is the use of the roller surface friction material will be broken into bite, so that they bear squeeze or split and broken machinery. When broken or need for increased crude than the broken, often made in the roll surface of the teeth or trench to increase Splitting role. Roll-on-roll crusher usually divided into the number of single roll, double roll and multi-roll crusher, suitable for rough broken, broken or minor coal, limestone, cement clinker and feldspar, and other hardware in the following materials.

5. Hammer crusher is to use the high-speed impact of hammerhead role of materials broken and minor operations in the broken machinery. Hammerhead hinged on the high-speed rotation of the rotor, with the lower part of the body to control the grate of the nesting size. Materials sent to Breakers first campaign by the high-speed impact of the initial hammerhead broken, and access to energy at the same time, high-speed flying on the inside wall of the chassis and broken plate again been broken.

6. Impact Crusher is to use the high-speed impact hammer plate and the plate counterattack rebound, allowing materials by repeated shocks and broken machinery. Hammer solid plate installed in the high-speed rotation of the rotor, and along the crushing chamber by a number of different angles layout block counterattack plate.