Hammer crusher is a crushing equipment that uses high-speed rotating hammers to impact and crush materials. Its working principle and structural characteristics can be summarized as follows:
Working principle of hammer crusher
1. Hammer rotation: The rotor of the hammer crusher starts to rotate at high speed through the drive of the motor. Multiple hammers are installed on the rotor, which are fixed on the rotor and move with the rotation of the rotor.
2. Material feeding: The material enters the crushing chamber from the feed port. During the feeding process, the material is impacted and hit by the hammer.
3. Impact crushing: When the material enters the crushing chamber, the hammer impacts the material in a high-speed rotating manner, and the impact force breaks the material or breaks it into smaller particles.
4. Re-impact: The crushed material is thrown to the wall plate or impact plate of the crushing chamber, and is impacted and crushed by the hammer again. This process can be repeated many times until the material reaches the required particle size.
5. Discharge: The crushed material is discharged from the crushing chamber through the discharge port and enters the next processing stage or final collection.
Structural features of hammer crusher
1. Frame (casing): The frame is the main supporting part of the crusher, which consists of an upper body, a lower body, two side wall panels, and a bearing seat, and is inlaid with a high manganese steel liner to protect the casing. The frame connects the various parts together through bolts to support the weight of the entire equipment.
2. Transmission device: It is mainly composed of an electric motor, an elastic coupling, and a main shaft. The motor directly drives the main shaft to rotate through an elastic coupling, and the main shaft is installed in the bearing seats on both sides of the frame through spherical self-aligning ball bearings.
3. Rotor: It is the main working part of the hammer crusher, consisting of a main shaft, a hammer plate, a pin shaft, and a hammerhead. The hammerhead is suspended on the hammer plate through a pin shaft, and the main shaft is supported on the casing through a self-aligning rolling bearing. The rotor rotates at high speed driven by the motor, driving the hammer head to crush the material.
4. Hammer head: It is the main force for crushing materials, and its quality, shape, and material have a great influence on the production capacity of the equipment. The hammerhead is fixed on the hammered disc by a pin shaft and moves with the rotation of the rotor to impact and crush the material.
5. Impact lining: When the hammer crusher is running, the impact lining will be impacted and ground by the material. It is made of high manganese steel casting, quenching, and strengthening treatment, and has excellent wear resistance and impact resistance.
6. Screen plate: It is composed of an arc screen frame and a screen plate, which is set under the rotor to screen the crushed material so that the material that meets the particle size requirements can be discharged from the crushing chamber through the screen hole.
Scope of application of hammer crusher
Hammer crushers are suitable for medium and fine crushing of medium hardness materials such as limestone, slag, coke, coal, and other materials in cement, chemical, electric power, metallurgy, and other industrial sectors. Hammer crushers are divided into single-rotor and double-rotor types, and single-rotors are divided into reversible and irreversible types. Among them, single-rotor hammer crushers and ring hammer crushers are widely used.
Baichy Machinery is a factory supplier of mining machinery, mainly focusing on stone crushers, powder grinding mills, and mineral beneficiation plants. We can offer you a free design and completed solutions according to your project.
Baichy Heavy Industry has grown into a high-tech mining equipment comprehensive enterprise, integrating R&D, manufacturing, sales, and after-sales service, Passing ISO9001:2015 quality management system certifications. The main products are mobile jaw crushing plants, construction waste crushing plants, PE jaw crushers, VSI sand-making machines, Symons cone crushers, single-cylinder hydraulic cone crushers, PCX high-fine crushers, grinding mills, ball mills, and full sets of beneficiation equipment with an excellent level.
