According to 3G triple screw pump sliding bearing work, the general bushing hole and the shaft with the clearance fit, the size of the shaft diameter and the bushing bore size deviation, usually at an average operating temperature of 20 ℃ to ensure that the shaft and bushing hole Between the gap with a reasonable change determined. Affect the sliding bearing overheating failure of many factors in the bearing structure design is reasonable, the material used in the right circumstances, the main bearing overheating is the radial clearance size of the improper assembly and improper use caused. Through the analysis of the requirements of the medium and the speed of the sleeve on the sleeve of the three-screw pump of the 3G three-screw shaft, a rectification plan for solving the lock of the sleeve is proposed. Proved by practice, after transformation of the equipment operating parameters are all normal. 3G triple screw pump radial clearance is very important, too large or too small are extremely harmful. The gap is too small, it is difficult to form a lubricating film, the friction heat is not easy to be taken away, the bearing overheating, serious will hold the shaft; gap is too large, the oil film is difficult to form, will reduce the machine's operating accuracy, will produce severe vibration and noise, Lead to tile accident. Therefore, the radial clearance of the sliding bearing bearing overheating failure, the radial bearing clearance Δ is the difference between the diameter of the bearing hole and the journal diameter, the sliding bearing to leave a certain radial clearance, its role is as follows: Bearing activity joints at least conditions; is to control the operation of the 3G three-screw shaft guarantee accuracy is the formation of liquid lubrication of the important conditions.
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