Hammer crusher and jaw crusher are common mining equipment. Both have suitable occasions and characteristics. Which crusher to choose should be decided based on the actual situation, such as what kind of materials need to be crushed, discharge particle size requirements and other factors. , and in some cases, the two crushers can also be used in combination to achieve better crushing effects.
Comparison between hammer crusher and jaw crusher:
1. Scope of application:
Hammer crusher is suitable for crushing materials with higher hardness and larger particle size, such as limestone, gypsum, coal, basalt, etc. Hammer crusher has the characteristics of high efficiency, energy saving and environmental protection, and is widely used in construction, metallurgy, chemical industry, cement, ceramics and other industries.
Jaw crusher is suitable for crushing materials with low hardness and small particle size, such as ore, coal, construction waste, etc. Jaw crusher has the characteristics of simple structure, easy maintenance and large crushing ratio. It is widely used in mining, metallurgy, construction, highway, railway and other industries.
2. Composition and working principle:
The hammer crusher is mainly composed of a rotor, hammer head, impact plate, screen plate and transmission device. Its crushing principle is to use the high-speed rotation of the rotor and the repeated impact of the hammer head to break the materials into particles of the required size. When the material enters the crusher, it is crushed by the hammer head in various ways such as hitting, impacting, shearing and friction. Under the action of the impact force, the material undergoes multiple collisions and crushing, and is finally broken into the required particle size. , and discharged through the sieve plate.
The jaw crusher is mainly composed of a frame, an eccentric shaft, a rotating part, a crushing chamber, a safety device, a discharge port adjustment device, etc. Its structure is relatively simple, and its operation and maintenance are relatively convenient. The crushing principle of the jaw crusher is to use the jaw The opening and closing movement of the plate crushes the material. The upper and lower jaw plates are connected through the eccentric shaft and the connecting rod mechanism. With the rotation of the eccentric shaft and the action of the connecting rod mechanism, the upper and lower jaw plates make periodic movements. When the lower jaw moves upward , clamp the material for crushing, and when the jaw moves downward, the crushed material is released. When the upper and lower jaws come closer, the material is compressed and squeezed. When the upper and lower jaws move away, the material is released, thus completing a crushing process. After multiple crushings, the material reaches the required crushing effect, and the crushed material is discharged through the discharge port.
3. Wearable parts:
The wearing parts of hammer crusher are mainly hammer head, lining plate, impact plate, grate bar, etc. The wearing parts of jaw crusher are mainly
Fixed Jaw Plate, toggle plate and side guard plate. When using the crusher, the wear and tear of wearing parts should be checked regularly and replaced in time.
4. Discharge port adjustment method:
The adjustment of the discharge opening of the hammer crusher is to make the crushing effect of the crusher more ideal and to ensure the safety performance of the crusher. The adjustment of the discharge opening of the hammer crusher usually controls the discharge particle size through gap adjustment. The following is Steps for adjusting the discharge port:
Turn on the power and start the crusher to operate normally;
Place a discharge hopper under the discharge port of the crusher, adjust the discharge port of the crusher to align with the center of the discharge hopper, and adjust the height of the discharge port so that it is the same height as the discharge hopper;
Adjust the discharge opening by shortening or extending the adjusting rod until the required particle size and discharge opening size are reached;
Check whether there are foreign objects or broken materials in the discharge port of the crusher, and clean them if necessary;
Adjust the feed volume of the crusher to match the crushing capacity of the crusher to avoid overloading or underloading;
Monitor the operating status of the crusher and promptly adjust the position and height of the discharge port to maintain its stability.
Jaw crusher discharge opening adjustment refers to adjusting the size of the crusher's discharge opening to adapt to the crushing requirements of different materials. Adjusting the size of the discharge port can change the residence time and degree of crushing of materials in the crushing cavity, thereby affecting the output and crushing efficiency of the crusher.
Usually, the discharge opening of the jaw crusher can be realized by adjusting the adjusting pad at the lower part of the crusher. The position of the adjusting pad can be adjusted manually or hydraulically. The European version of the jaw crusher is adjusted by the wedge. The position of the wedge is adjusted to control the up and down movement of the
Jaw Plate, thereby adjusting the size and particle size of the discharge port. This adjustment method is relatively simple, highly flexible, and can Make real-time adjustments during production.
It should be noted that when adjusting the discharge opening, it should be adjusted according to the crushing requirements of different materials to avoid affecting the crushing efficiency and output of the crusher due to the discharge opening being too large or too small.
