Published on September 2, 2011 by Harden
If you want to trace the developing history of shredder, the most simple tool for crushing appeared two thousand years before Christ in China, the Chinese name is -chujiu,we can call it “ball and socket”. The further evolution of the ball and socket is foot pestle from 200 to 100 years BC. These tools use the leverage, the initial prototype with a broken machine, but their action is still intermittent grinding.
shredder nowadays
Modern shredder was developed from the western industrial revolution. In 1858, jaw shredder was born in the United States designed and manufactured by an American named Blake.Its structural form is double- elbow -plates jaw shredder. Jaw shredder can be used in coarse crushing process, and can also be used in medium and fine crushing process,especially in underground crushing assignments and medium and small mobile crushing devices.
The world’s first cone shredder is primary designed by American Symons brothers.Till now, many domestic manufacturers of cone shredder name their shredders “Symons”. It is about 1920 that Symons Cone shredder applied in crushing mills. In 1948, an American company researched and developed the hydraulic cone shredder, It can expel the uncrushable materials that entered into the crushing cavity, and can adjust the discharging mouth size during operating, producing the granularity with a uniform size. To the 1970s, along with the development of technology, automatic controller has been developed to be used to control the hydraulic cone shredder.Cone shredder has advantages of big crushing ratio, high efficiency, less energy consumption and uniform granularity size.Suitable for medium,fine,and superfine crushing of hard rock and ore materials.
The emergence of these crushing machines have greatly improving the effectiveness of crushing operations. However, due to the different of the crushing characteristics of each variety of materials, different sectors of the product size requirements are different, people would have developed a variety of mechines for crushing operations base on different principles of work .
