The maintenance experience of DMS3636 sieve vibrator

DMS3636 linear vibrating screen maintenance experience of vibrator - 2019 09 - 25 shu-lan wang, Gu Hongfu ( Crane coal mine group general factory) Li Xujian ( Hegang heat company) I coal preparation plant is reformed in 2001, the introduction of the three products heavy medium cyclone this process, in the process of the medium, dehydration vibrating screen is DMS3636 type vibrating screen. The vibrating screen is composed of screen box, vibrator, spring mechanism, flexible shafts, and four drive motor. The vibrator is symmetrically arranged on both sides of sieve box and eccentric block structure of the middle plate, a total of six groups of eccentric block, each three groups respectively with the intermediate shaft connected between eccentric block, four motor with flexible coupling connected respectively, as shown in figure 1. Our new system in July 2003 formally put into production use. Frequent use half a year later, the vibrating screen 'hold bearing' phenomenon. Especially in 2004 July and August 2 months, the vibrating screen 'hold bearing' phenomenon is more serious. From February 2004 to November 2004, we have 12 sets of vibrating screen 72 vibrator, vibrator 'hold bearing phenomenon of 152 times, this is equivalent to all of the vibrator changed twice bearing within half a year. 1, the cause of the problem after half a year, we've come to the conclusion that the following factors lead to bearing arms vibrator. （ 1) , the vibrator is not reasonable in design and its oil discharge oil twists and turns, the old oil discharge difficult, in addition, its internal insulation ring only eight & phi; 10 holes, such as the oil injection hole not with these holes in the lubricating oil will note, bearing for lack of oil will be fever, finally will 'hold bearing. （ 2) , lubricating oil quality is bad. With lubricating oil injection to the bearings, run after a period of time, found that after opening the vibrator, the lubrication oil in the bearing has been modified, into something similar to the mud. Once these things into the bearing, is bound to lead to bearing heating. （ 3) , the oil injection quantity is little. Due to the smaller oil hole inside the space is little, so use ordinary pressure in oil gun injection oil could not reach the requirements of lubrication bearing. 2, maintenance measures aiming at the problems above, after many experiments, we finally summed up the experience in the paper are as follows: ( 1) Sieve vibrator, external structure, can't change, but we distance ring of the hole increased, but also the encryption. This note oil hole and spacer ring hole on the odds on. （ 2) , replace the lubricating oil. The original use is ordinary molybdenum disulfide 3 # lithium base grease. We have now adopted a unified brand molybdenum disulfide 1 # lithium base grease. This kind of lubricating oil not only of good quality and relatively loose, when the oil is much easier. （ 3) , specially bought a lubricator, the pressure of the oiler 30 mpa, the oiler oil not only convenient, and high pressure, can according to the requirements of the new oil into the bearing inside, still can put the old oil discharge inside the bearing. （ 4) , we designated persons for vibrating screen, oil filled note once every five days, each time a vibrator note within 0. 5 kg of lubricating oil. After a series of adjustment, vibrating screen 'hold bearing phenomenon has greatly improved. Since December 2004, vibrating screen 'hold bearing only for 4 times. Not only save a lot of manpower and material resources, more important is that it is no longer restricted factors affecting coal production.