ATOX50 slow roller oil lubrication station back to fault analysis and solving skills

ATOX50 slow roller oil lubrication station back to fault analysis and solving skills - 2019 05 - 09 YuanChengWen Zhou Duifu ( Nanjing China united cement co. , LTD. ) My company's 5000 t/d production line adopts ATOX50 of raw material grinding roller mill, roller bearing lubrication with the method of circulating oil gas station, three roller each set for the oil pump, oil pump, oil pump connected with roller bearing cavity through the tubing. With the increase of vertical mill operation time, roller wear oil seal appeared, pipe line of loose coupling, pump efficiency will decrease, lubrication system failure. ZuiShenZhe is supply and oil return system fault, light lead to vertical mill jump stop, or lead to damaged oil seal, forced outage maintenance for a long time. In this paper, the supply and oil return of two types of failure as a summary, and detection techniques is given. 1 fault phenomenon one: return pipe has a lot of lubricating oil constantly flow to the tank back to the pump pressure transmitter are installed on the tubing, used to measure the return pipe inside the vacuum. Under normal condition, back to the oil pump continuous operation for oil pump intermittent operation, roller bearing lubricating oil cavity in order to achieve the purpose of a stable. Rev. Stop for oil pump is controlled by the tubing vacuum back to. Because the start-stop for oil pump is controlled by the tubing vacuum back to, if return pipe on the measurement of vacuum pressure transmitter is not accurate, it can measure a set pressure value for oil pump stop. Namely for the oil pump has been running will not stop, will be a lot of lubricating oil pump to the roller bearing, at the same time back to the oil pump will be back in a lot of oil, from the return pipe of glass Windows can see there are a lot of lubricating oil in continuously flow back to pump. , although back to the oil pump is larger than for the oil pump capacity for oil pump is outward oil supply, back to pump into the oil absorption, for oil pump efficiency is much higher than the pump. If oil is greater than the amount of oil return, roller bearing cavity will slowly filled with lubricating oil, until the damage of seal oil and oil seal. Solution: conventional measures is to check back to the tubing pressure transmitter is damaged, use multimeter calibration of the output pressure value whether match the ma value. Additionally, for faster find fault, our equipment for technological transformation, will be three roller roller lubrication station for oil pump running state signals to control the picture up, so the operator can timely found the problem, handle in time. 2:2 breakdown phenomenon has no flow within the return pipe of oil roller mill for a long time after the operation, return hose pipe joint will become loose and air intake, mild wear roller oil seal can also cause air into the back of the tubing. When a large number of air pooling together, along the pipeline flow back to pump, will suppress in back to the import of oil pump, pump idling, back to the oil pump in front of the tubing will be filled with lubricating oil. Can be seen in the oil return glass Windows lubricating oil is no longer flow, oil pressure into a positive, unable to provide for the pump stop signal. Roller bearing caused by cavity filled with lubricating oil, oil seal leakage, gas station oil tank of the lubricating oil in a very short period of time will be lighting, major equipment accidents and economic loss. Solution: conventional treatment is back to the oil pump, will be back to the pump inlet pipe joint loosen, emptying air inside the return pipe, complex pipe joint, resumed oil return flow. In addition, also can be installed on the return pipe flowmeter, undetectable by oil flow in the setting of time would call the police, when control of operators and on-site inspection to find and eliminate hidden danger in time. Source: 'cement' ( Graphic)