Installation and Trial-Run of Raymond Mill

1.  Preparation for installation of Raymond Mill

(1).  Before installation, the mill should be properly maintained, kept under roof to prevent sunlight and rain.  Antirust oil is supposed to be applied on the exposed surface of the mill.  To set up rules for the mill is highly suggested.

(2) The sizes of workplace and foundation with enough installing height and space depend on the size of Raymond Mill installation foundation chart.  The foundation should be built with reinforced concrete of high scale cement.  The trenches and tubes for electric cables and other metal rods should be preset in the foundation.  15 days of maintenance are required before installation, after the building of the foundation,

(3) a crane of 2-3 tons is needed for the installation and maintenance,

(4) If it surpasses 6 months from the date when the equipment is delivered frome the factory to the date when being used, main shaft of the grinder, transmission device, roller and grease box of the separator should be checked and cleaned, then enough grease should be filled into the above parts.

2.  Installation (As illustrated in Raymond Mill installation diagram)

(1)  Lift the base of transmission device into the pit, and make it leveled up, a certain height should be controlled. Then check and ensure surface “A” being leveled, then install the transimission part on the surface of “A” using bolt to fix it.

(2)  Installing the main frame of grinder:  To put anti-vibrating rubber between the joint point of base bottom surface and cement foundation, and between the joint points of foot bolt screw (as illustrated in diagram).  Then check levelness of the base surface B with a frame-level gradienter at 4 points on the intersected cross, at the same time adjust the two clutches (C and D), nonaxiality shall be below 0.20 mm, nonparallelism of E1 and E2 should be below 0.1 mm and distance between E1 and E2 should be 5-8 mm.

(3)  The position and height of pipeline system should be installed strictly in accordance with the diagram.  Any change is forbidden.  The joints of the pipelines should be sealed tightly to prevent air leakage.  All the electric devices should be reliable.  The trial run is necessary after the complete and correct installation of all parts.

3. Trial run without load

(1)  For a trial run, the roller system should be tightly bound with steel cables to prevent collision of the rollers against the ring.  The trial run of the main frame without load should last no less than one hour.  During the trial run, the grinder should run smoothly and steadily, oil temperature in the tank should not surpass 80℃, with increase of temperature not over 40℃.  The rotation direction of the mainframe and the separator can be referred to diagram 4.

(2)  The blower works without load first.  After it gets into normal operation, the load can be added.  The loaded trial run should be detected closely. Normally it should run without extra noise or vibration, the highest temperature of rolling bearing should be below 70℃, with temperature increase below 35℃.

(3)  The loaded trial run should last no less than 8 hours.  The normal operation should be smooth and steady, without air-leakage at the joints of pipeline.  After the trial, fasten joinlts everywhere, then the equipment can be put into operation.