Raymond Mill development history of 1925 ECLoesche summarizes the first generation of the drawbacks of the use of the character and structure of coal mill Raymond, decided to further improve the structure of raymond grinding mill, management and development of a grinding mill as opposed to industrial milling machine, called Improved Raymond. The main structure is characterized by industrial rotary grinding ring bowl mill, roller use mechanical spring load pressure grinding force increases, the material is fed from the center of rotation within the bowl-shaped grinding ring by centrifugal force into the roller. Grinding roller shaft is fixed on a one-way movable arm, each arm can be adjusted by the grinding force of the control spring. This improved ventilation systems Raymond has positive and negative pressure blowing straight in two ways. This type of raymond mill patent soon to be US Combustion Engineering (Combustion Engineering) purchased. Because there are still Improved Raymond roller mill ring problems, although a slight increase in the roll diameter, but not grinding force increases. Later, the US subsidiary Combustion Engineering of Raymond and on this basis, developed a new generation of Raymond, called VR mill. In many respects this Raymond Loesche mill structure is now similar. It is worth noting that it is different from Loesche grinding tapered roller and flat disc, while using a cylindrical roller and grinding disc surface tilt angle of 15 degrees with use. Roller has in the inspection and maintenance and Loesche mill roller pulls a similar device, and also fitted with a protective device for children only wear metal contact between the roller and the disc. Also before starting the roller mill can be lifted ahead of time, so you can reduce the starting torque of the motor. Raymond industrial applications in the United States, usually used to prepare large industrial mill pulverized coal fineness product changes between 250-325 mesh, adjustable work product fineness and yield during operation. R-type Raymond mill maintenance and repair: R-type Raymond mill use in the process, there should be a fixed charge of personnel, the operator must have a certain level of technology. R-type Raymond mill before installation to the operator must carry out the necessary technical training to understand the principle of the performance of R-type Raymond mill, familiar rules. For the R-type Raymond mill normal operation, should develop equipment "equipment maintenance safe operation of the system" in order to ensure long-term safe operation of the mill industrial milling machine series, at the same time have the necessary repair tools and grease and the corresponding accessories . R-type Raymond mill use for some time, maintenance should be carried, while roller grinding ring blade overhaul replacement of wearing parts such as processing, grinding roller device before and after the use of the connection bolts and nuts should be carefully examined to see whether There are loosening, whether to add a little grease. R-type Raymond mill roller device use time more than 500 hours or so to replace the roller, the roller jacket of the rolling bearings must be cleaned, damaged parts should be replaced, fuel pumps and hand tools available grease gun. Small industrial mill | Lei Machinery (Online) | industrial milling machines provided by Zhengzhou Machinery Co., Ltd. Lei. Zhengzhou Lei Machinery Co., Ltd. (www.hnzljx.net) (www.hnzljx.net) is a professional, "Raymond, shredders, mills," the company. Since its inception, we adhere to the "good faith, sound management" approach, the courage to participate in healthy competition in the market, so that the "Lei" brand has a good reputation. We adhere to the "service first, customer first" principle, so that the mechanical Lei won the trust of customers all at crushing grinding equipment, and establish a good corporate image. Special Note: This information is for reference only pictures and information, please contact us to obtain the most accurate information, thank you!