The crushed materials are coal, salt, chalk, gypsum, brick, limestone, etc. It is also used for crushing fibrous structure, strong elasticity and toughness of scrap wood, paper or crushed asbestos cement waste to recover asbestos fibers, etc. In addition, hammer crusher can not only be used in crushing production line, sand making production line, but also can replace cone crusher in mineral processing production line.
1. The casing of the hammer crusher is composed of a lower body, a rear upper cover, a left side wall and a right side wall, and all parts are connected as a whole by bolts. There is a feeding port in the upper part, and the inner wall of the casing is inlaid with high manganese steel lining plates, which is convenient for the replacement of the lining plates after wear. The lower body is welded with carbon structural steel plates. In order to place the bearings on both sides to support the rotor, the bearing supports are specially welded with high manganese steel. The lower part of the casing can be directly fixed on the concrete with anchor bolts, and the rear upper cover, left side wall and right side wall of the casing are all welded with carbon structural steel plates. There is no protective measure between the casing and the shaft, and the leakage of dust is very serious. In order to prevent dust leakage, all parts of the casing and the shaft are provided with shaft seals. In order to facilitate maintenance, adjustment and replacement of grate bars and hammer heads, the lower body and both side walls are provided with inspection holes.
2. The rotor is the main working part of the hammer crusher. The rotor consists of a main shaft, a hammer disc, a pin shaft, a hammer head, etc. There are evenly distributed pin holes on the disc, and the hammer head is suspended by a pin shaft. In order to prevent the disc and the hammer head The axial movement of the shaft is fixed with locking nuts at both ends of the pin shaft. The rotor is supported on two rolling bearings, the bearings are fixed on the support of the lower body by bolts, and two positioning pins are fixed on the center distance of the bearings. In order to make the rotor store a certain kinetic energy during movement, to reduce the peak load of the motor and reduce the wear of the hammer head, a flywheel is specially installed at one end of the main shaft. The main components of the rotor are described in detail below.
3. The main shaft is the most important part of the hammer crusher supporting the rotor. The weight and impact force of the rotor and the hammer head are all borne by it. Therefore, the material of the main shaft needs to have high toughness and strength. The material of the main shaft is made of high-quality alloy steel. Ultrasonic flaw detection to process for quenching and tempering. 2.2 The hammer disc of the hammer disc hammer crusher is used to suspend the hammer head. During the operation of the hammer crusher, the hammer disc will inevitably be impacted and rubbed by the ore, so the hammer disc should be required to have a certain resistance. Abrasiveness, the hammer disc and hammer hole use high-manganese steel carburizing heat treatment to improve its wear resistance.
4. The hammer head is the most important working part of the hammer crusher. The quality, shape and material of the hammer head determine the production capacity of the hammer crusher. The kinetic energy of the hammer head is proportional to the weight of the hammer head. The heavier the hammer head, the greater the kinetic energy and the higher the crushing efficiency. The weight of the head is complete, the minimum hammer head is 15 kg, and the maximum hammer head can reach 298 kg. Various hammer head weights can be customized according to customer needs. The hammer head is made of new high-quality multi-element high-chromium-manganese steel composite casting, and its service life is Several times the general hammer head.
5. The hammer crusher beats the ore at high speed through the hammer head, and the ore has great speed and kinetic energy in an instant. In order to prevent the wear of the frame, manganese steel is used as the lining plate on the inner wall of the frame, and the striking plate is made of high-manganese steel for casting and quenching. Reinforced treatment ensures superior wear resistance and impact resistance of the lining plate and the strike plate. Due to the harsh working environment of the hammer crusher, the quality of the hammer crusher determines its service life, and the quality of the hammer crusher is determined by the material of its components.
