Crusher, history can be traced back to the 1850s from the birth of the first jaw crusher in the world for a long time has passed. With the development of the productive forces, jaw crusher has been unable to fully meet the needs of the metal crusher crushing technology manufacturers, so the metal crusher models, based on a jaw crusher, it has designed a crusher. In 1924, the German first developed a single, dual-rotor two types of crusher, crusher structure then similar to the modern squirrel cage crusher, because in terms of the structure, or the analysis from the works It has the characteristics of both the crusher. As the material requires repeated shocks, crushing process can be free and unimpeded discharge, but due to the intensity and feed crusher capacity limit metal crusher, gradually transforming its model for squirrel cage crusher. Adjusting the crusher internal voids; internal voids primary crusher means the price gap metal crusher rotor body and the back plate, grate and the hammer between these voids scale, as it relates to the security gate near the grate and is not a plot material, if the plot material existence, and the hammer can not be accumulated material from the grate when pressed, would have been a severe conflict hammer wear, therefore, in the use of the process, it is necessary to adjust the various parts are often gaps, it is within the proper scale. Pinghu metal crusher | quality metal crusher | Xin Li Heavy professional manufacturer (certified merchants is provided by Gongyi City Heavy Machinery Manufacturing Co., Ltd. Xin Li Xin Li Gongyi City Heavy Machinery Manufacturing Co., Ltd. (www.gyxljxc.com) is specialized. "hammer, grate, linings, crusher parts, hammer crusher, mobile crusher station" of the enterprise, the company of "honesty, hard service" concept, to provide you with the highest quality products and services. Welcome inquire! Contact: Yu Jingli.