Product Description

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The impact crusher can process materials with a side length of 100-500 mm, and has a compressive strength of up to 350 MPa, with a large crushing ratio, and the crushed materials are cubic particles. It is widely used in building materials, ore crushing, railways, highways, energy, transportation, energy, cement, mining, chemical industries and other industries for medium and fine crushing materials. The discharging particle size can be adjusted, and the crushing specifications are diversified. The impact crusher is named according to the working principle, that is, the material is crushed by the principle of impact crushing. It is a crusher equipment that is finer than the jaw crusher. It is mainly used for fine crushing operations in the stone production line, and the jaw crusher The crusher cooperates for crushing.

The design of the equipment has a novel design principle and adopts a new concept crushing technology, which can meet the crushing of different material specifications and fully meet the requirements of the new process of "more crushing and less grinding". The principle of "stone-strike iron" not only has a large crushing ratio, but also has low unit power consumption. Large-scale projects have proved that this machine has a good application prospect in the field of mineral processing.

Impact crushers include single-rotor impact crushers and dual-rotor impact crushers. Among them, the single-rotor impact crusher has a relatively simple structure. The material pieces are fed from the feed port. In order to prevent the material pieces from flying out during crushing, a chain curtain is installed in the feeding direction of the feed port. The fed material blocks fall on the grate bar screen, the small material blocks fall to the lower part of the casing through the grate seam, and the large material blocks slide along the screen surface to the rotor. A blower with a certain height is fixedly installed on the circumference of the rotor, and the rotor is driven by a motor through a V-belt to rotate at a high speed. The material pieces falling on the rotor are impacted by the high-speed rotating plate hammer, gain kinetic energy and hit the counterattack plate at high speed, then rebound from the counterattack plate, and collide with the material thrown by the rotor in the crushing zone. The space formed by the bar screen, the rotor, the counterattack plate and the chain curtain is called the impact zone; the space formed by the counterattack plate and the rotor is the second impact zone. After the materials are crushed by mutual impact in the impact zone, they then enter the second impact zone and are impacted and crushed again. The crushed materials are discharged through the discharge port at the lower part of the casing.

One end of the counterattack plate is hung on the casing with a live chain, and the other end is fixed in position with an adjusting bolt. When a large piece of material or a fragile object is sandwiched between the rotor and the counterattack plate, the counterattack plate is subjected to greater pressure and the counterattack moves backward.

Product Advantage

The impact crusher has the following five aspects of potential performance in the crushing process.

1. The impact crusher is more effective in processing materials with a large amount of moisture, and effectively prevents materials from clogging.

When the water content of the processed material is too large, the feed chute and the impact plate of the impact crusher can be equipped with a heating device to prevent the material from sticking. The impact crusher does not need to be equipped with a bottom screen, which can effectively prevent clogging.

2. The impact crusher is applicable to a wider range of material hardness.

The plate hammer of the impact crusher is firmly fixed on the rotor with a mechanical clamping structure, and has a large moment of inertia when rotating with the rotor. Compared with the hammer crusher (the hammer head is in a suspended state), the rotor of the impact crusher has greater momentum, which is suitable for crushing harder materials, and at the same time lower energy consumption.

3. It is convenient and flexible to adjust the discharging particle size, and the adjustment range is wide

The impact crusher can adjust the discharge particle size in a variety of ways, such as adjusting the rotor speed, adjusting the gap between the impact plate and the grinding chamber, and so on. The gap adjustment can be adjusted mechanically or hydraulically, and the hydraulic adjustment system can be used to conveniently complete the gap adjustment through the on-site operation button or the distance control system.

Fourth, the wearing parts are small and the metal utilization rate is high

The wear of the hammer of the impact crusher only appears on the side facing the material. When the rotor speed is normal, the feed will fall to the surface of the blow hammer (blow surface), and the back and sides of the blow hammer will not be worn. Even the wear on the side facing the material is very small. And the bottom grinding rod is also easy to replace. The metal utilization rate of the impact crusher plate hammer can be as high as 45%-48%.

Fifth, the replacement of spare parts of the impact crusher is simple and the maintenance cost is correspondingly reduced

Only 6 blow bars are installed on the rotor of the impact crusher, and the blow bars can be easily replaced with the designed special tools. It only takes one shift to replace a set of blow bars.

Working Principle

Board hammer

The shape of the hammer is closely related to the fastening method and working load. The design of the sheet hammer should meet the requirements of reliable work, easy loading and unloading, and improvement of the utilization rate of the sheet hammer metal. The hammer generally adopts high chromium cast iron, high manganese steel and other

Made of wear-resistant alloy steel. There are many shapes of the hammer, including long strip, T-shaped, S-shaped, I-shaped, axe-shaped and slotted shape, etc., generally long strip.

Compression block
This part is widely used in all kinds of mining machinery. The material and performance are stable, and it can be made according to different requirements. After the load test operation is completed, the compression block should be adjusted as necessary. The compacting block has the characteristics of stable chemical composition, reasonable heat treatment process, good wear resistance and high strength. The compression block automatic clamping mechanism adopts cylinder drive, linkage mechanism and linear guide way to realize the sequence of compression block clamping, feeding, clamping at the other end, simultaneous loosening, and retreating.

Parts composition
The main components of the impact crusher include springs, railings, front impact frame, rear impact frame, impact liner, square steel, impact liner bolts, flip device, main shaft, hammer, rotor frame, liner, locking block, Compression block, etc.

The impact crusher is a crushing machine that uses impact energy to crush materials. When the machine is working, driven by the motor, the rotor rotates at a high speed. When the material enters the impact area of the blower, it hits and breaks with the blower on the rotor, then is thrown to the counterattack device and broken again, and then bounces off the counterattack liner. Return to the hammer action area to re-crush. This process is repeated. The material enters the first, second, and third impact chambers from large to small, and is repeatedly crushed until the material is crushed to the required particle size and discharged from the discharge port. In order to facilitate understanding, the crushing equipment factory uses a more intuitive dynamic diagram to demonstrate.

The stone falls directly into the high-speed rotating turntable from the upper part of the machine; under the action of high-speed centrifugal force, it collides with another part of the flying rocks around the turntable in an umbrella-like manner to produce high-speed collision and high-density crushing. A vortex motion is formed between the turntable and the casing, causing multiple blows and smashes.