The quality of a device is important, but the operation of the raymond mill is the most important, because only know the requirements of this, so as to better use, use more comfortable, in our plan, by the sensor The level of the material level into electrical signals, sent to the inverter, the inverter according to the signal to adjust the feed roller drive motor operating frequency, to achieve feeding roller stepless speed regulation; by the microprocessor will set the rolling distance and high precision Displacement sensor measured the rolling distance compared to the difference to send a signal to the stepper motor driver, stepper motor drive control stepper motor running a certain number of revolutions, through the screw drive roller roll slowly roll. Adjust the rolling distance until the difference is zero, to achieve the adjustment from the set value. As a milling equipment, raymond mill is a wide range of applications. A Raymond mill accessories performance is good or bad, to a certain extent, with the quality of its accessories. Therefore, when the purchase of equipment, we must pay attention to see the quality of accessories, accessories to be a certain understanding. There are two kinds of manual and automatic control of the roller rolling distance. When the machine is running normally, it adopts the automatic mode. At this time, the feed control system starts to feed and stop the feeding signal according to the material level. The microprocessor calls the system The manual setting of the stored distance is automatically fast closing; when the machine repair or other personnel need to interfere with the situation occurs, the manual mode can be used to manually control the rapid clutch, fine adjustment, correction set rolling distance, transfer information. Raymond mill grinding distance control system a. Design principle to adjust the rolling distance of the same function: roller trajectory of the same b. The overall design of the entire rolling distance adjustment system consists of rod assembly, fixed bearing, loose spring, movable bearing, guide, eccentric sleeve components, hanging angle, connecting rod, stepper motor, torque limiter and electric cylinder composition. Electromechanical grinding and grinding distance adjustment system still has all the functions of gas control grinding and grinding distance adjustment system.