Commissioning manual without load of Raymond mill
Source:http://www.chinaraymondmill.co Author:GreatWall Posted:2015-05-14 Views:
After installation, you need a commissioning of Raymond mill. If have some puzzle with installation, check here. Or copy the URL to your web site: http://www.chinaraymondmill.com/news/87.html.
Take care that the commissioning is taken example of YGM series of Great Wall Heavy Industry Company. It is for your reference if the machine is not in a same manufacturer. The progress of commissioning as follow:
(1). The lower the pressure spring is (effective length after being compressed), the more pressure roller exerting on material is, the lower pressure is, the higher the capacity is. However, load of main motor shall be taken into consideration. The working length of spring shall be controlled between 200-210mm.
(2). Before the trial run, adjust the spring between the separator and mainframe, assure that the main axis of the separator is vertical and the distance between the separator and the mainframe should be 5-8mm.
(3)Adjust the rotating speed of electromagnetic adjustable speed motor to change blade rotation helps to reach different finish fineness.
(4)The trial run must be unloaded. Before trial run, the roller system should be tightly bound with steel cables to prevent collision of the rollers against the ring. The trial run without load should last not less than one hour. During the trial run, the grinder should run smoothly and steadily, oil temperature in the tank shall not surpass 8℃ with increase of temperature not over 40℃. The rotation direction of the grinder can be referred to diagram 4.1, the rotation direction of screw conveyor for YGM160 can be referred to diagram 4.2.
(5)To try blower valve must be closed first. After its getting into normal operation, the valve can be open. The trial-run should be watched closely. Normally it should run smoothly and steadily, and without unusual noise and vibration, the highest temperature of rolling bearing should be below 70℃, with increase of temperature below 35℃.
(6)The loaded trial run should last not less than 8 hours. The normal operation should be smooth, steady and noiseless, without air-leakage at the link of pipeline. After the trial, fasten every jolt, and ten it can be put into use.
(7)Vibrating feeder’s operation and feeding
Electromagnetic vibrating feeder’s structure and working principle:
①After the installation of vibrator, unlock the screw on the positioning yoke(three above and one below) and tighten the unlocked screw by screw nuts, open the rear cover of the electromagnetic vibrator and assure that the gap between them is 1.8-2.1mm, then tighten the screw and the cover.
②Increase the potential device “R” gradually during the process of trial run without load. The range of the amplitude should between 1.8-2.5mm and the current flow should be 1.2A, in addition, you need to check whether the amplitude and the current flow are stable then open the bin stopper and test the current and amplitude. As for the amplitude, the decrease of 0.5mm is within bounds, if the feeders is smaller in its capacity under the rated condition, lean the vibrator by 20° to meet the feeding requirement.
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