The working principle of the impact crusher can be clearly described in several steps:
1. Motor drive: The
impact crusher first drives the rotor to rotate through the triangular belt by the motor.
2. Plate hammer action: During the rotation of the rotor, the plate hammer on the rotor is in a radial state due to the action of centrifugal force. When the material enters the range of the plate hammer rotation from the inlet, it is impacted by the high-speed running plate hammer.
3. Initial crushing and impact: After the material is impacted by the plate hammer, it is thrown to the impact plate along the tangent direction of the plate hammer rotation for impact, thereby achieving initial crushing.
4. Repeated crushing: After the material returns from the impact plate to the plate hammer rotation space, it will enter the impact zone of the second impact plate and be further crushed here. This crushing process may be repeated many times, and the material is continuously impacted and impacted by the plate hammer and the impact plate in the crushing chamber, so that cracks are generated along its own joints and sections, and the internal structure is destroyed, loosened and broken.
5. Discharge: Particles smaller than the crushing requirements will be discharged from the machine along the gap between the plate hammer and the impact plate, becoming the crushed product.
6. Gap adjustment: The impact crusher also allows the purpose of changing the material discharge particle size and material shape by adjusting the gap between the impact frame and the rotor.
In addition, the impact crusher has some structural characteristics and operating precautions:
• Structural composition: The impact crusher is mainly composed of a frame, a transmission mechanism, a rotor, a hammerhead, and an impact plate. Among them, the rotor generally adopts an integral cast steel structure, which is both durable and easy to install on the hammerhead.
• Operation process: Before the operation, the machine should be inspected to ensure that there is no blockage at the discharge port and that the screws of each part are not loose. During operation, pay attention to the abnormality of the machine. If there is severe vibration or noise, stop the machine immediately for inspection.
• Applicable scenarios: The impact crusher is generally used as a secondary crushing equipment, which can crush materials with a feed particle size of <700mm and is suitable for crushing medium-hard materials, such as limestone crushing in cement plants.
In summary, the impact crusher drives the rotor to rotate at high speed through an electric motor, uses the multiple impacts and collisions of the plate hammer and the impact plate to crush the material into the required particle size, and controls the discharge particle size and shape by adjusting the gap.
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.
