Rock crusher hammer mill

Hammer mill crusher Application Hammer mill crusher is suitable for mid-hard and light erosive Materials, whose pressureresistance strength is no more than 100Mpa and humidity lower than 15%, suchas coal, salt, chalk, gypsum, blocks, lime Stone, etc. Hammer mill crusher Operating Principle The main working part of hammer crusher is rotors with hammer. The rotors consist of main shaft, disk, pin shaft and hammers. The motor drives the rotors to rotate quickly in the crushing cavity. Raw Materials enter the crusher through the feed opening and are stricken, impacted, cut and ground by the high-speed hammerto small size. There is a screening plate under the rotor, so that Materials with size smaller than the screen mesh will be screened out and others are left tobe further hammered and ground until reach the st and ard size. The size of the final product can be adjusted by changing the screening plate. The gap between therotors and the screening plate can also be adjusted according to different requirement. Hammer Mill Design The major components of hammer mill, shown in the picture, include: - a delivery device is used to introduce the material to be ground into the path of the hammers. A rotor comprised of a series of machined disks mounted on the horizontal shaft performs this task. - free-swinging hammer that is suspended from rods running parallel to the shaft and through the rotor disks. The hammer carries out the function of smashing the ingredients in order to reduce their particle size. - a perforated screen and either gravity- or air-assisted removal of ground product. Acts to screen the particle size of the hammer mill to ensure particles meet a specified maximum mesh size. Feeder Design Materials are introduced into the paths of the hammers by a variable speed vein feeder. This type of feeder can have its motor slaved by a programmable controller to the main drive motor of the hammer mill. The operational speed of the feeder is controlled to maintain optimum amperage loading of the main motor. Screen Design The amount of open area in hammer mills screen determines the particle size and grinding efficiency. The screen must be designed to maintain its integrity and provide the greatest amount of open area. Screen openings (holes) that are aligned in a 60-degree staggered pattern optimize open area while maintaining screen strength. This method will result in a 40 percent open area using 3.2 mm (1/8 inch) holes aligned on 4.8 mm (3/16 inch) centers. Read more: evelyn@cncharcoalmachine.com