中心傳動球磨機是由電動機、液力偶合器、減速器、主軸承、筒體、進出料端部等組成。其所有部件位于同一軸線或同一平行軸線上。它以中心傳動取代常規磨機的大小齒輪周邊傳動。
　　當電機空載起動時,液力偶合器中與電動機聯接的泵輪從電機獲得能量傳遞給工作油，當電機達到一定轉速時，工作油高速沖擊與負載聯接的渦輪，從而驅動負載；當工作油降低能量后，又回到泵輪待重新吸收能量，這樣往復循環，實現泵輪（主動）與渦輪（從動）之間的能量傳遞。因泵輪與渦輪之間只通過工作油實現上述柔性聯系，所以能隔離扭振和沖擊，使負載起動平穩。
　　中心傳動球磨機由于采用圓柱滾子軸承，減少了摩擦阻力和靜阻力矩，加上使用了液力偶合器和齒輪減速器，使配用電動機功率較常規磨機減少了10.7%--30%,節能效果顯著。
　　Center drive ball mill is made up of electric motor, fluid coupling, reducer, the main bearings, cylinder, feeding and catching end. All of its components are in the same axis or parallel. It use center driving replace the conventional gear and pinion driving around.
　　When the motor starting with no-load, the pump impeller in the fluid coupling connected with motor ,then transfer energy from motor to the operation oil, when the motor reaches a certain speed, the operation oil attack the turbine which connected with the load at high-speed ,in this way, the motor drives the load; when operation oil reduced energy ,which returned to pump impeller and re-absorption of energy, so in this cycle back and forth, to achieve transferring energy between the pump impeller (the initiative) and turbine (driven). Because only the operation oil can achieve the above-mentioned flexible connection, so they are able to isolate torsional vibration and shock, and making the load start smoothly.
　　As a result of center drive ball mill using roller bearings which reduced the frictional resistance and static resistance torque, and coupled with the use of the fluid coupling and gear reducer ,in this way , compared with conventional mill ,center drive ball mill is able to make the electrical power decreased by 10.7% - 30% . Energy-saving effect is very obvious.
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