Hammer Crusher

Hammer crusher is one of the main equipment for fine crushing of limestone, coal or other brittle materials with a hardness below medium in the metallurgical, building materials, chemical and hydropower industries. It has the characteristics of large crushing ratio, high production capacity and uniform product particle size. One-stage hammer crusher can crush materials with a feed particle size of 1100mm to less than 20mm at one time, so the traditional two-stage or three-stage crushing can be changed to one-stage crushing, simplifying the process flow, saving equipment investment, reducing consumption and other production costs.

Our company has a history of designing and manufacturing hammer crushers for more than 30 years. The product structure is advanced, the performance is reliable, the operation is stable, and the energy consumption is low. The hammer crushers produced by our company have formed a series and are well received by users at home and abroad.

In 1980, our company produced a Φ2000×2000 one-stage hammer crusher for Guangxi Litang Cement Plant. After several years of operation, it has also been well received by users.

Hammer crushers can be divided into reversible and irreversible types. The rotor of the reversible hammer crusher can be reversed and is generally used for fine crushing; the rotor of the irreversible hammer crusher cannot be reversed and is generally used for medium crushing. The first-stage hammer crusher is irreversible.

Ordinary hammer crushers are mainly composed of a frame, a rotor, screen bars, a striking plate and an adjustment device. The motor drives the rotor to rotate at high speed through a coupling. The ore entering the crusher is crushed by the impact of the hammer on the rotor. The crushed ore obtains kinetic energy from the outside of the hammer and rushes to the striking plate and screen bars in the frame at high speed; at the same time, the ores collide with each other, thus suffering multiple crushing. Ore smaller than the screen bar grid holes is discharged from the grid holes; individual larger ore blocks are crushed again on the grid plate by the combined effects of the impact, extrusion and grinding of the hammer head, and the ore is squeezed out of the grid holes by the hammer head, thereby obtaining the product of the required particle size.

The first-stage hammer crusher is mainly composed of a frame, a rotor, a feed roller, a grate bar, a hydraulic opening device, a foundation and other parts. The main motor directly drives the rotor with a flywheel through a coupling. The ore is fed into the crusher feed port by a heavy plate feeder. The feeding is required to be carried out over the full width of the feeder to achieve uniform feeding. After entering the crusher, large pieces of ore first fall on two rubber-supported shockproof feed rollers. The two feed rollers rotate at different speeds to prevent the ore from wedging between the two rollers. The latter rotates faster than the former. A part of the fine material in the feed falls directly between the two rollers, and the rest of the ore continues to be fed into the crushing area. The ore entering the crushing area is crushed or thrown up by the hammer on the high-speed rotating rotor. The ore thrown up at high speed collides with the impact plate in the counter-attack cavity of the frame or the ore blocks collide with each other and are crushed. Then they are brought into the crushing plate and grate section by the hammer, and continue to be crushed until the required particle size is reached and discharged from the gap between the grate bars. The discharged material is transported away by the discharge belt conveyor. In order to prevent foreign objects such as ironware from damaging the machine, the crusher is equipped with a safety door, and its opening and opening force are controlled by a heavy hammer. To meet the different requirements of tube mill and vertical mill, one-stage hammer crusher has two different grates for users to choose. The hydraulic opening frame device is convenient for maintenance and shortens the maintenance parking time.