Before Raymond mill are manual feeding, when the feeding, Banxia handle, feed mill began, while the rolling mill rolls together, this approach can not adjust the speed of the feed rollers 6r Raymond, can not automatically adjust the rolling mill rolls away. Manual control is the most primitive of control, can not guarantee the timely roll grinding roll and feed roller clutch timely stops, resulting in an empty mill phenomenon, but the price is cheaper, still use this control on a small mill. Eighties of the more common applications of hydraulic feed control adjustment, the biggest drawback of this control system is a serious oil and 1990s gradually replaced by hydraulic control pressure control, clean, and free of oil, more than one mill may be the same gas Advantages source. Excellent precision sealing structure which is to prevent the coarse particles from the impeller end Raymond finished mixing impeller key internal contamination, a special multi-layer design labyrinth structure, not only turning more labyrinth gap is adjustable, and the blades will produce at the inlet assisted centrifugal force to prevent large particles from entering the labyrinth Raymond, sealed with excellent results. Practice has proved that the large particles in the maze of less than one hundred thousandth of the leak. But the "precision" Labyrinth of moisture materials more stringent requirements (preferably ≤6%) Raymond 3r, for higher grade material moisture content, the maze of small gaps easily wear all 塞雷蒙 4r, so impeller resistance swells, unable to work long hours. Therefore, the design into a self-cleaning labyrinth structure that can automatically clean up the sediments within the maze, it can be a long continuous operation. Raymond mill, Yuxin Senda (certified), Luohe Henan Raymond Ltd provided by the new Senda Heavy machine. Henan new Senda Heavy Machinery Co., Ltd. (www.hnsdzg.com) is a leader in Zhengzhou, crushing grinding equipment, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs . Yuxin Senda in leadership with the staff warmly welcome all inquiries negotiations to create Yuxin Senda a better future.