2.7 vibration jaw crusher
Vibration jaw crusher is Russia MexaHo δρ developed. The aircraft use a vibrator imbalance centrifugal inertia force and high frequency vibration to achieve broken. A double-action jaw structure, two vibrators were two dynamic role in the jaw, and contrary to the realization of self-synchronization so that the two jaw moving around torsional axis synchronous vibration. Through torsional axis amplitude can be adjusted to control granularity. Applied to broken iron alloy, metal shavings, grinding wheel and metallurgical slag, and other difficult broken materials, the materials can be broken up to 500 MPa compressive strength. Equipment specifications for the 300,100 × 80 × 300, 100 × 1400,200 × 1400, 1200 × 440, and such. Fixed jaw pendulum frequency is 13 ~ 24 Hz, power 15 to 74 k W, broken up than 4 to 20, is now available for dozens of equipment used in the production. Structure Figure 9 [11].

3-teeth roll crusher

Against smash for a single gear coal crusher there inefficient, complex structures, Daolibu uniform characteristics such as North China Institute of Technology developed a new generation of 915 single-tooth Crusher [12].

This crusher has two structural types: the first type structure shown in Figure 10, which is the structure of the original Rally spring to thrust springs, elastic spring 490 kN; drawbars articulated in the jaw boards at both ends M100 × 4 with a screw, nut screwed tightly onto each with two; Left nut plates used to adjust the jaw position, that is a gap I expected, the far right nut used to adjust spring elastic, pull rod inserted in the body with a bearing on the , bearing hole for the upper and lower adjustable rectangular to the adjustment of product size. This structure reduces the height, shortened the length of drawbars, more compact structure.

 The second structure shown in Figure 11, this structure type is the use of jaw crusher wedge adjustment and the twin-roll crusher rollers initiative by combining the advantages of both absorbed, such as: feed mouth, roller surface can be fitted with different sizes of boards broken tooth, a jaw plate inlaid with wear-resistant liner can be replaced, the population size can be expected through the thrust of the rectangular plate FORM adjustment. With the same specifications jaw crusher or double roll crusher compared crushing capacity of the device can be increased several times, efficiency can be increased by 30%. Debugging is the F915 × 1000-teeth roll crusher, a production capacity of 140 t / h, maximum feed size of 500 mm mouth, the expected size of 50 to 100 mm, more uniform particle size products. At the same time, the structure of such a pre-crusher broken and broken two regions, broken teeth after the roll materials and are forced to pick from the body, more so than Nien applies to the handling of the damp material [12].
 

4 vibration Breakers

With the vibration theory and practice of development, the use of vibration of the work of the agencies equipment universal application. Some studies in recent years the use of fossil inertial vibration of a broken or grinding equipment, the advantages of this type of equipment are as follows:

(1) of the fragmentation of the non-rigid, the only moving parts from the point of the size and the nature of the broken material is variable, and therefore, the wear and tear on the vulnerability of the expected impact on small particle size. More importantly, such as iron difficult when all of broken machines, the machines will not cause damage, if the size is small, no parking, it is difficult for random debris can be automatically from the operation from the aircraft.

(2) The inertial force can be adjusted by the size of the equipment was sufficient material on the implementation of the broken broken, and not raise basic consumable materials and the tangential velocity, they are particularly suitable for cement clinker, gold ore Zhuo, such as grinding hard and the strong over the broken material.
(3) machines in the resonance point, only installed a power output of other models of the same 1 / 2 to 1 / 5, could significantly reduce operating costs.

The structure of the machine as shown in Figure 12.

Figure 12 PBZ series pendulum roller structure of vibrating crusher

Here's how it works: roller 2 by swinging rod through the bottom hinged shaft support, and fixed and four in a rack 6 of the spring 5 vibration system. Motor through a V-belt driven spindle rotation of the eccentric block to give the system to produce inertial vibration excitation. Material from the hopper 4 to enter into machines, by the vibration of the impact of roller 2 squeezing broken.
The aircraft can be applied to 110 to 200 MPa or Pu-hardness f = 16 ~ 20 hardware or sinter ore in the chronology [13].

5 shaft-breakers

Shaft-breakers because of simple structure, less energy consumption, easy maintenance, the expected size will be able to satisfy the demand, there is a certain degree of market demand. Shaft-breakers can be divided into vertical hammer crusher, vertical counter-breakers, vertical composite vertical shaft impact crusher and breakers, vertical shaft crushing machine is the invention of the first hammer crusher by the revelation up to the spindle installation, this can be made circular cylinder, installed around the liner to protect the cylinder, cylinder production and simple, because it is circular, its force is well, it is first come out of the shaft hammer crusher, but Several others are in the vertical shaft hammer crusher on the basis of derivatives.
Vertical hammer crusher is the working principle of the use of high-speed rotating rotor Hammer (Hammer plate) the impact of the squeeze, and so the impact of the rapidly changing energy for the deformation work, and instantly the materials in the stress waves generated internally, and to rapidly to spread around, so that the materials in its internal defects, cracks and grain interface a great stress concentration along these fragile materials to split and broken surface.

Spindle is transferred through the heart Rolling installed in the body, the axial thrust of the spherical ball bearings bear, the general spindle keyless connection with a number of row-hammer, hammer shelves with hammers. Vertical counter-general only two rows of hammers, set at the middle of the crusher divided into two crushing chamber from top to bottom, that is crushing chamber and squeeze crushing chamber. Cylinder wall with ramp-shaped teeth counterattack plate. Bulk materials from the first feed into the mouth cavity broken hammer fell on the shelves, the high-speed rotation of the rotor speed up so that the kinetic energy of sufficient materials, and under the influence of centrifugal force, flying around, the impact of the counterattack in the cylinder board, the impact crusher and rebound, and the plate was high-speed rotary hammer to smash hit. Some of the materials and high-speed rotation of the rotor with a rotary movement, in the Rotary movement, the material impact each other, after being further squeezed after natural whereabouts to smash at set, in the second row hammer fell on the shelves, the recurrence the impact of the collision squeeze, the authors suggest that this is the type of smash through [14].

6 Rotary Crusher

6.1 rotary breakers
Rotary Crusher initially seen at the German 1960s, as large-scale foreign mining requirements of large machinery, which has just come out of the rotary breakers not be developed. In the early'80s, due to the rapid development of small and medium-sized mines, some researchers in China began to rotary crusher for further development.

As we all know, the broken equipment is good or bad depends on the crushing chamber design, crushing chamber to reflect the production capacity of equipment, power, steel consumption and fragmentation of product quality, and other important performance indicators. Rotary Crusher mainly by rotating roller, suspension, safety devices, adjust, tensioning device, system and rack rotating components, fixed by the crushing chamber concave broken boards and broken rotary roller composition. Materials broken through the rotary roll eccentricity operation to complete, and the crushing chamber angle rodents with static and dynamic changes in function. The rodents aircraft crushing chamber angle is decreased gradually from top to bottom, which can effectively prevent nesting mouth plug, nesting smoothly, and achieve high-frequency broken, and the crushing process is gradual and, therefore, broken power, energy concentration, wear small.

PH-type rotary breakers occurred in the role of broken rotary roll crusher near eccentric, the eccentric shaft to break cavity eccentric side, the crushing chamber in the top of the materials were being broken. Materials on the broken main squeeze, split, bending, grinding effects. Eccentric transferred from the crushing chamber, has been broken by qualified nesting materials from the mouth. Nesting process, first, from the gravity of natural nesting, and the second is on "mandatory nesting" [15].
Roll can be broken with the eccentric shaft rotary freedom, according to the size and role of torque direction, a positive turn of roller (the same with the eccentric shaft rotation), and not to reverse three kinds of state also speed the pace of the points, so to be effective in broken roller surface to wear uniform. Rotary Crusher rodents have changed angle, high-density broken, followed by gradual broken, broken and the mandatory high-frequency characteristics of nesting.

6.2 dual-chamber rotary breakers
In order to better play the role of rotary breakers, PH crusher auxiliary cavity broken into the crushing chamber and symmetrical form, which is dual-chamber rotary breakers. Central South University of Technology Professor Zhang Zhi Rail rotary breakers claiming to be a variable angle rodents Rotary jaw crusher, it is compound pendulum jaw crusher deformation, to replace the compound pendulum jaw crusher [16].

Formally proposed the dual-chamber rotary Beijing Beijing Seahawks mine engineering equipment company XU Zheng First, the eccentric rotary roll crusher further development, can be used to replace the existing Super chronology or chronology jaw crusher or small cone specifications Crusher [17,18].

Dual-chamber rotary crusher has the following advantages:

 (1) rotating roller crusher was put to the pros and cons, the broken materials more effectively,

(2) symmetry of the cavity created so that the process of crushing air itinerary shortened, production increased by approximately 30% ~ 40%, PSH Series dual-chamber rotary breakers because of a broken roller wear-resistant welding of high strength layer can be broken compressive strength of 600 MPa or materials of Al2O3 content 87.5% of the refractory, easily broken.

PSH dual-chamber rotary breakers E-type aircraft portfolio models. Greatest feature is 100 mm in all material circumstances, the products can be based on user needs in the 5 mm to 100 mesh, and even small adjustments in size. The aircraft on the market over the past five years, not only in the domestic market hit a good reputation, and has begun to Southeast Asia, Africa exports.