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Vertex crusher
11 months ago | [YT] | 0
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Vertex crusher
Detailed Explanation of Rock Crusher Working Principles
In mining and construction aggregate production, rock crushers are essential. They break large rocks into smaller, production - suitable particles through specific mechanical means. Different crushers operate on distinct principles. Here are the workings of some common types.
I. Working Principle of Jaw Crushers
Jaw crushers are popular for their simplicity, reliability, and high crushing ratio. Comprising a fixed jaw plate, movable jaw plate, frame, eccentric shaft, and toggle plates, they crush by extrusion.
When the motor rotates the eccentric shaft, the movable jaw plate moves back - and - forth. As it nears the fixed jaw plate, rocks in the crushing chamber are squeezed, bent, and split. The non - smooth jaw - plate surfaces add friction, enhancing crushing. Larger rocks break into smaller pieces during this process.
When the movable jaw plate retreats, the crushed rocks fall out of the bottom discharge opening. Adjusting this opening's size controls the final product's particle size. For coarser aggregates, widen the opening; for finer ones, reduce the gap.
II. Working Principle of Cone Crushers
Ideal for medium - to - fine crushing of medium - to - high - hardness rocks, cone crushers are common in mining and metallurgy. Their key parts include a fixed cone (concave), movable cone (mantle), eccentric shaft sleeve, main shaft, and transmission device.
Powered by an electric motor, the eccentric shaft sleeve rotates, making the movable cone swing eccentrically around the fixed main shaft. The gap between the two cones varies during this motion.
When rocks enter the annular crushing chamber, the squeezing force from the movable and fixed cones crushes them. This action combines linear extrusion with rotational kneading. As the movable cone moves, crushed rocks are discharged from the chamber's bottom. Adjusting the initial cone gap and operating parameters precisely controls the particle - size distribution to fit different production needs.
III. Working Principle of Impact Crushers
Used for medium - hardness and softer rocks, impact crushers are crucial in construction and road building. They consist of a rotor, impact plates, hammers, and the machine body, operating on impact - crushing principles.
During operation, the motor spins the rotor at high speed, along with the hammers. When rocks enter the crushing chamber, the high - speed hammers strike them, hurling the rocks towards the impact plates. The rocks bounce back and collide again with hammers or other rocks. Repeated impacts, rebounds, and collisions break the rocks into smaller particles.
Thanks to the reliance on impact energy, the crushed product has a uniform, mostly cubic - shaped particle size, perfect for construction aggregates. By changing the gap between the impact plates and the rotor, the number of impacts and crushing degree can be adjusted, thus controlling the product's particle size. For example, when making concrete aggregates, this gap can be set according to the concrete's design strength and aggregate gradation requirements.
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11 months ago | [YT] | 0
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