Types of Stone Crusher Machine

Types of Stone Crusher Machine

Stone Crusher Machine comes in many types and are frequently used in stone crushing production lines, complete production lines, and ore production lines. Based on different application areas, crushers in the industry can currently be divided into several major categories, including jaw crushers, impact crushers, hammer crushers, and cone crushers.

Jaw crushers are currently the most widely used stone crushers in the world. They have a large crushing ratio, uniform particle size, simple structure, and convenient maintenance. They are commonly used for primary crushing, breaking materials into both coarse and fine particles, and producing a large quantity of crushed stone. Jaw crushers can withstand compressive strengths up to 320 MPa. They are widely used in mining, metallurgy, building materials, highways, railways, water conservancy, and chemical industries.

Jaw crushers are driven by a motor. The motor drives a belt and a pulley to drive an eccentric shaft, causing the jaw plates to reciprocate along a predetermined trajectory, entering the space between the fixed jaw plate, the moving jaw plate, and the side guard plates. The crushed stone enters the crushing chamber and is discharged through the hopper below. Jaw crushers use a compression crushing method, driven by a motor, belt, and pulley, which in turn moves the jaw plates up and down via an eccentric shaft. When the jaw plates move upwards, the angle between the moving jaw plates increases, bringing them closer to the fixed jaw plate, simultaneously crushing the stone through compression, friction, and grinding. When the moving jaw moves downwards, the angle between the plates and the moving jaw decreases, and the moving jaw plate moves within the rod, eventually moving away from the fixed jaw plate under the action of a spring. At this point, the stone is discharged from the discharge port of the crushing chamber. The motor of the moving jaw crusher rotates continuously, performing periodic crushing and cutting to achieve batch crushing of the stone.

Impact crushers are used for crushing stone, specifically for secondary medium and fine crushing. The finished stones are cubic in shape with good particle size. Their working principle is as follows: the high-speed rotating motor rotor pulls the stone into the feed inlet, where it is impacted by high-speed impact hammers, crushing the stone. The crushed stone is then further crushed and pushed back by the liners, finally discharging from the discharge port. By adjusting the gap between the frames, the size and shape of the stone can be changed to achieve the crushing purpose.

Hammer crushers are suitable for crushing various brittle materials, stones, and gravel, such as coal, salt, white sandstone, gypsum, alum, bricks, and limestone. The compressive strength of the stone should not exceed 150 MPa, and the moisture content should not exceed 15%.

Hammer crushers are driven by a motor to rotate the rotor chamber at high speed. Stone enters the machine from the top and is

impacted, sheared, abraded, and ground by the high-speed movement of the hammers. A screen plate is located at the bottom of the rotor; materials smaller than the screen aperture size pass through and are discharged, while materials larger than the screen aperture size remain in the screen plate due to greater resistance and are further ground by the hammers before finally passing through the screen plate and being discharged from the machine.

Cone crushers are widely used in the silicate industry of metallurgy, building materials, road construction, and chemical industries. They are suitable for crushing various medium-hardness minerals and stones. This crusher features high crushing force, high efficiency, high capacity, low operating cost, easy adjustment, and economy. Due to the rational selection of components in its structural design, the crusher boasts a long service life, produces uniformly sized crushed products, reduces hydraulic chamber emptying system pressure, and minimizes downtime. The multi-chamber design allows users to select different chambers to better meet their needs. The cone crusher employs grease seals to prevent blockages in the water supply and drainage systems, avoiding defects caused by water-oil mixing. A spring-loaded overload protection system prevents foreign objects from entering the crushing chamber, protecting the crusher from damage. This machine is available in standard and short-head models. Generally, the standard model has a larger feed size and produces coarser crushed particles; the short-head cone crusher has a finer feed size, which is beneficial for producing fine-grained stone. Therefore, the standard model is typically used for coarse crushing, while the short-head model is used for fine crushing.

The above four types of Stone Crusher Machine are the most common types of stone crushers.