The crusher is a machine that crushes large-sized solid raw materials to the required size. The crusher is composed of coarse crushing, fine crushing and wind conveying devices, and achieves the purpose of the crusher in the form of high-speed impact. The use of wind power to powder once, eliminating the traditional screening process. Mainly used in mining, building materials and other industries.
In the current agricultural production, the mill to the majority of farmers to save a lot of labor, but the application of the mill itself is not special understanding, today we will take a look at the common use of powder machine knowledge is what?
According to the D90 standard of the required material fineness, 90% of the material reaching the predetermined fineness can be divided into crusher below 60 mesh, crusher 60-120 mesh, ultrafine mill 120-300 mesh, and ultrafine mill above.
There are four kinds of external forces applied to the material in the crushing process: rolling, shearing, impact and grinding. Press rolling is mainly used in coarse and medium crushing for the crushing of hard materials and bulk materials shear is mainly used in crushing or crushing for toughness or fiber materials crushing impact is mainly used in crushing and depolymerization for brittle materials crushing and grinding mainly in ultrafine crushing and ultrafine crushing for medium fineness crushing.
1. The crusher and power unit should be firmly installed.
2. Check the fasteners after installation, and tighten them if they are loose. At the same time, check whether the tightness of the belt is appropriate.
3. Before the crusher starts, rotate the rotor by hand to check whether the jaw, hammer and rotor are flexible and reliable, whether there is collision in the shell, whether the rotation direction of the rotor is consistent with the direction pointed by the arrow of the machine, and whether the lubrication of the power machine and the crusher is good.
4. Do not casually change the pulley.
5. The crusher should be idled for 2 minutes to 3 minutes after starting, and then feed after no abnormal phenomenon.
6. Pay attention to the operation of the mill at all times. The feed should be uniform to prevent blocking the stuffy car, and do not overload the work for a long time. If it is found that there are vibration, noise, bearing and body temperature is too high, spraying material, etc., it should be stopped immediately for inspection, and the fault can be removed before continuing to work.
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