Compared with the hammer crusher, the impact crusher has the following main obvious technical advantages.
(1) It can effectively process materials with large moisture content and prevent the blockage of the crusher
When the water content of the processed material is too large, the feed chute and the impact plate of the impact crusher can be equipped with a heating device to prevent the material from sticking. The impact crusher does not need to be equipped with a bottom screen, which can effectively prevent clogging. The hammer crusher cannot use heating to prevent material sticking, and must be equipped with a bottom screen, which increases the possibility of blockage.
(2) The impact crusher is suitable for both soft materials and very hard materials
The plate hammer of the impact crusher is firmly fixed on the rotor with a mechanical clamping structure, and has a large moment of inertia when rotating with the rotor. Compared with the hammer crusher (the hammer head is in a hanging state), the rotor of the impact crusher has a greater momentum, which is suitable for crushing harder materials and has lower energy consumption.
(3) The discharging granularity can be adjusted conveniently and flexibly, and the adjustment range is wide.
The impact stone crusher can adjust the discharge particle size in a variety of ways, such as adjusting the rotor speed, adjusting the gap between the impact plate and the grinding chamber, and so on. The gap adjustment can be adjusted mechanically or hydraulically, and the hydraulic adjustment system can be used to conveniently complete the gap adjustment through the on-site operation button or the distance control system. The hammer crusher can only adjust the discharge particle size by replacing the bottom sieve plate.
(4) The wear of the vulnerable parts is smaller than that of the hammer crusher, and the metal utilization rate is high. The wear of the hammer of the impact crusher only appears on the side facing the material.
When the rotor speed is normal, the feed material will fall to the surface of the blow hammer (blow surface), and the back and sides of the blow hammer will not be worn. Even the wear on the side facing the material is very small. And the bottom grinding rod is also easy to replace. The metal utilization rate of the impact crusher plate hammer can be as high as 45%-48%. The hammer head of the hammer crusher is in a hanging state, and the wear occurs on the top, front, back and side. Compared with the plate hammer, the hammer head wears more serious, and the metal utilization rate of the hammer head is only about 25%. Moreover, the rotor body itself may also be subject to wear. The sieve plate at the bottom of the hammer crusher is seriously affected by abrasion, and all the grilles must be replaced, and the replacement of the sieve plate is also more complicated.
(5) The replacement of spare parts is easy, and the maintenance cost is correspondingly reduced. Only 6 blow bars are installed on the impact crusher rotor. The blow bars can be easily replaced with special tools. It only takes one shift to replace a set of blow bars. The replacement of the grinding rod in the bottom grinding cavity only takes tens of minutes, which greatly reduces the time and cost of overhaul and maintenance. The hammer crusher has more than 100 hammer heads. It takes a lot of time and manpower to replace a set of hammer heads, and the cost of overhaul and maintenance is relatively high. The replacement of the bottom screen is also extremely troublesome.