High-Pressure Grinding Rolls
Structure & Characteristics
Main Part of HPGR
The main frame of the high-pressure grinding roll is a frame-combined structure with a beautiful appearance. It is formed by a combination of eight square beams up and down, front and back, and left and right. The connection is firm. A fixed bearing seat, a movable bearing seat and a cylinder are installed in the frame.
When disassembling, only the bolts in the frame are removed, and the upper beam can be removed, which is convenient for maintenance and replacement of spare parts.
(1)Adjusting the radial clearance of double row spherical roller bearing by using hydraulic method. Before installation,the radical clearance shall be within the scope of 55-145 microns,and it would decrease 38-116 microns after installation.And ensure the minimum residual clearance is not less than 20 microns.Hydraulic method should also be used when bearing change.The above data is only applicable to model GM1000-500.
(2)Bearing outer ring axial clearance adjustment.There must be a certain axial clearance to ensure the bearing moved axial on the process of rollers thermal expansion.After setting down bearing radial clearance, can be used on both sides of the bearing pressure along the method to adjust at the same time, and the detect clearance is 0.5 mm(When the outer ring with a loose situation, it would also be allowed in the lateral accumulation setting).
(3)In order to prevent dust from entering the bearing,which would cause damage bearing. It is equipped with double dust-proof maze,bearing cavity spilled oil will fill the slots in a maze and have a better dust-proof effect.
STUFFING PROTECTION DEVICE
ROLLERS GAP ADJUSTINGDEVICE
Rollers gap adjusting device can realize the adjustment of the roll gap within a certain range.Our general work rollers gap is 10 mm,which could also be adjusted according to the condition.At the same time,it could realize the rollers gap calibration by reducing the plate group when the rollers’ surface is worn.
Pulling out the moving roller opposite direction through manual control hydraulic system when adjusting. Then putting out the plates group and make a redistributioncombination,it would achieve the rollers gap adjustment.