It has a history of more than one hundred years. As early as 186 to 1878, several patents put forward complex vertical impact crusher's principle design, but it was unsuccessful because the design of mechanical parts could not meet the requirements of use at that time. After more than ten years, in 188, complex vertical impact crusher with modern characteristics was designed by Pbiletus W and Gates. In the same year, it was officially manufactured by Gates Iron Works in the United States, and the patent right was obtained the following year. At that time, this crusher was called Gates Composite Crusher. Crusher belongs to rotary shaft type side ore discharge. Since the appearance of Gates complex vertical impact crusher was many years later than that of jaw crusher, in order to compare the performance of jaw crusher and complex vertical impact crusher, in 1883, 9 cubic meters of the same material was treated at the same time under the same conditions of feed port and discharge port. As a result, the composite crusher and jaw crusher were dug in 2.5 minutes and 64.5 minutes respectively. Since then, people have realized that compound crusher has higher production capacity than jaw crusher, so it has been widely used soon.
before the early 2th century, gyratory crusher has always occupied a major position. Because the production of the mine was in the stage of manual loading at that time, the raw ore fragmentation was generally only 2? -inches or so, even large mines can't use large gyratory crusher. For example, at the beginning of the 2th century, Homestake Mine adopted at least 22 small composite crushers and used 2,5 mashers to feed materials.
with the development of mining crusher, the overall technology of mining industry has been improved to some extent, and crusher is listed as the core equipment in large-scale mining processing. Mine crusher is mainly used for crushing large-scale ore in mining technology, and the working procedure is gravel or stone breaking, generally referring to the raw ore after mountain blasting, and processed into the required finished product size.
due to the development of domestic real estate and highway construction, the crusher has made a rapid leap. At present, the production specifications of crusher have developed from a single crusher to various specifications and models.
saving energy and reducing consumption is a major trend in the future development of composite crushing machinery industry. The composite crushing ratio is large, and the maximum crushing ratio can reach the discharging granularity and can be adjusted at will, which is not affected by the wear of the plate hammer and liner; There is no screen bar, which is not easy to block when crushing materials with high water content and large mud content; Adopt elastic adjustment mechanism, the unbreakable objects can be automatically discharged without damaging the equipment; The bearing is arranged horizontally, with long service life, and can crush materials with high temperature (such as cement clinker); The rotor body of this machine has a unique structure, and it hardly wears when crushing materials; The rear cavity is provided with a lead screw or a hydraulic opening mechanism, so that the wearing parts can be easily replaced without lifting the main equipment.