| |
The Hammer Of Pulverizer
The most important and most easily wear parts of pulverizer is the hammer. Its shape, size, alignment methods, and so on, there be a great impact to pulverize efficiency and product quality.
According to the Chinese Academy of Agricultural Mechanization by 1.6mm, 3.0mm, 5.0mm, 6.25mm thickness of the four types of corn for the hammer to smash come to trial, 1.6mm than 6.25mm hammer to smash the effect of raising 45 percent more than 5mm to increase 25.4 percent. Thin with hammer to smash a high efficiency, but relative to shorten the useful life. Multi-thick hammer, smashing the target should be the size and type to another.
Hammer and heat treatment of materials currently used by the hammer of the main material of low carbon steel, medium carbon steel, special cast iron, and so on. Heat treatment and surface hardening (including surface carburization and hardening the surface of tungsten carbide surfacing, etc.) can be a good hammer to improve the wear resistance, increase the hammer life.
Hammer is a high-speed operation of the components, and its precision manufacturing mill on the balance of the rotor impact. General requirements on any rotor hammer between the two groups of the poor quality of no more than 5g. As a result, hammer in the course of processing a tight control on the accuracy, in particular, tungsten carbide surfacing hammer should strictly ensure the quality of the welding process. Hammer factory to be set for the unit. Hammer every day should be installed to install the sets of hammer, and not allowed to set between the sets of free exchange.
The Hammer of pulverizer is in a direct attack on the work of the material components and, therefore, wears the fastest, the most frequent replacement of wearing parts. Hammer refers to the wear and tear of the hammer angle of the work of the wear and tear; hammer four working angle of the wear and tear, the hammer will be scrapped.
Hammer with the number of units width of the rotor on the number of hammer (hammer-density) to measure the density is too large rotor torque to start, subject to crack down on the number of materials, reduced production of electricity; density is too small mill output Will be affected.
Hammer refers to the arrangement of the rotor in each group between the hammer and hammer with the group between the relative positions of the relationship between. Hammer the best way to achieve the following order: rotor rotation, each of the hammer trajectories does not repeat; materials will not be in the film goes under the hammer to pulverize happened to the interior side of the phenomenon of migration (with the exception of the special requirements); Rotor force balance, high-speed operation when no vibration.
Rotor hammers when running at the end of the line speed on the work performance mill impact. Hammer pulverizer to pulverize the main feed raw materials rely on the hammer on the impact of feed raw materials, hammer line is, the higher the speed of the hammer feed particles greater the impact, the ability to pulverize the stronger. As a result, increasing the line speed of hammer in a certain scope can increase the pulverize capacity - to reduce energy consumption and product size. However, the rate is too high, will increase the mill's no-load power consumption and size too small to crush and increase power consumption. And the high speed rotor on a balance of performance and even the entire mill to create a higher quality. Therefore, the best line speed of hammer is determined by according to the specific circumstances of the case. At present, the hammer of pulverizer rate of the general admission line 80 ~ 90m / s.
Pulverizer related articles
|
