The inspection and maintenance of vertical mill

2019 - vertical mill inspection and maintenance 10 - 01 Wang Zhanguang ( Jiaozuo strong cement) Vertical mill as cement enterprise host equipment, operation quality directly affect the enterprise benefit, the inspection maintenance is very important, in this paper, in combination with production practice about the region and the method of inspection maintenance. One, the vertical mill inspection parts and methods of vertical mill by its power, transmission, lubrication, choose powder, feeding pipe, in and out of the wind pipe, seal, discharge mechanism and the host, such as large and complex system, inspection maintenance tasks, must be checked, not leak blind Angle. The paper are as follows: 1. Power part check power refers to the vertical mill main motor. Check whether content including motor grounding is loose, tighten in time when problems found. The position of the auxiliary motor switch is normal; All kinds of cover is loose friction; Motor vibration, noise, temperature, current, voltage and so on is normal; Motor lubrication is normal, the hydraulic oil pressure, oil temperature, cooling water temperature is normal, import and export, the hydraulic oil level, poor filter oil pressure is normal. If there is a problem when cure causes should be analyzed. 2. Inspection maintenance transmission part of the transmission parts including the coupling and reducer as well as the it service station. Gas station part inspection include whether the oil level, the pressure is normal, back to the oil, oil, fuel tank temperature is normal, whether there is oil leakage, oil leakage phenomenon, through the tubing temperature by judge whether there is oil, filter oil pressure difference is normal. Cooling water, the water temperature is normal, in and out of the cooler water temperature is normal. Also check station pump working condition, such as vibration, noise, etc. About coupling mainly check whether there is friction and shield, whether there is a bolt breakage or other abnormal sound, etc. Reducer is the key of the inspection, listen to the internal bearing, and whether the thrum of the gear mesh uniform, ministries to test whether the abnormal vibration, the testing point temperature is normal, if there is a loose anchor. If found to have abnormal analysis must be conducted, in this can be done by the shaft speed and noise, vibration frequency, determine the fault location. Check whether the oil pipeline and the fuselage is oil leakage, etc. 3. Grinding and grinding and grinding part inspection place components including pressure station and roller, mill and its support, etc. That part of the inspection must first check whether the pressure station and pipeline is normal, the accumulator is normal, the hydraulic cylinder drops of oil leakage, hydraulic cylinder and a hinge is abnormal, whether there are abnormal noise, abnormal impact. Check whether the roller support rotation is abnormal, fastening bolt looseness, gland, each joint bearing lubrication is in place, seal are abnormal, hydraulic fittings, hydraulic lever grinding body rolled back seal are damaged, such as whether the casing wear out and other abnormal conditions. Listen to grinding in noise and vibration is normal. 4. Wind mill material inspection mill around the pipeline connection pipe refers to, in and out of the air duct, into the material, slag discharge pipe. It mainly check in and out of the wind pipe connection bolt looseness, whether soft connection damage air leakage; Into the discharge pipe is worn through, into the discharge mechanism is flexible and effective. 5. Classifier inspection classifier is located in the top of the mill, the main check whether the motor, reducer, coupling working normally, if there is any abnormal, noise, vibration, temperature rise is normal. Listen to the classifier internal noise is normal, whether there is friction block phenomenon, etc. 6. Each platform channel check because vertical mill is very large, platforms, stairs, and about the safety of the personnel and equipment, at ordinary times can't underestimate the department of inspection, shall be as one of the important contents of inspection. Major inspection, platform support, all join points are in failure, baluster is reliable, whether the pedal desoldering, whether have influence on the platform of barriers, whether the presence of volatile content, whether there is a heavy crisis platform security, etc. 7. Other aspects of the inspection to check whether the seal fan inlet is disabled, filter blockage, fan operation is normal, whether the fittings and pipes leakage, etc. Second, the maintenance of the maintenance of vertical mill roller mill mainly refers to the inspection to see hear general fault processing. Mainly includes: for each station pressure, temperature adjustment; The cooling water flow rate and temperature adjustment; For oil, water, gas path fitting of fastening, eliminate dripping phenomenon; Check out the hydraulic oil level is insufficient, timely supplement; Found loose platform, support when processing the reliability; Found oil pollution or other pollution, equipment to clean up in time, ensure health; For equipment in time when air leakage blocking, in order to reduce the reactive power consumption; When the equipment is found around the crisis equipment and personal safety is not stable, should be removed in a timely manner. Timely dredging each joint bearing lubrication piping, hinge section, ensure the lubrication. When found the anchor bolt looseness or other fittings should be tighten. And so on. About must stop processing problems found during the inspection, the reason should be analyzed, determine the fault location, formulate treatment scheme, submitted to the relevant management or administration department, waiting for arrange downtime. Equipment for major issues, and crisis of security or safety problem, should be on-site emergency stop processing, then report to the management department, maintenance plan, maintenance, accident expanding. Due to the limited level of the author, not comprehensive, or have wrong, please comment. Thank you very much!