Introduction to the coal mill open gear oil solutions to problems

Mainly talks about the coal mill open gear oil solution - 2019 11 - 30 Wei Xuemei ( Fujian tower 'brand cement co. , LTD. ) one Equipment basic information of the company has two 5000 t/d clinker production line, rotary kiln and coal mill manufacturers are ZXZGJX co. , LTD. , equipment of open gear lubrication way is a lubricating oil pool, oil leakage phenomenon is more prominent. two Solution to change the open gear equipment on-site environment landscape, to improve the size of the gear lubrication conditions, this paper puts forward the following four solutions. 2. 1 to improve the seal form as shown in figure 1, the company coal open gear grinding is radial baize seal structure. Baize inelastic, easy to wear this kind of sealing material itself, is often repair just change quickly again soon. If the material change to oil resistant rubber sealing ring, rubber good elasticity and wear resistance can be better adapt to the open gear cover the effects of manufacturing error. The shape of the rubber sealing ring can be designed to 'Y' shape, press the 'V' direction in the big gear ring protruding side mounted on both sides, have the effect of dust and oil baffle, when sealing ring wear to a certain extent, the available bolt to adjust with the sealing face clearance or designed to be at the end of the sealing ring 'Y' type spring automatically adjust the structure. On both sides of the other in the big gear ring protruding side wing dust and welding one circle, which can effectively block for mill barrel is loose and leakage of dust, etc. As shown in figure 2. The operation of this scheme is simple, the main input for the design of the rubber seal, about how much does charge need about 4 to 50000, the service life of sealing ring for about 2 years. 2. 2 increase because the maze structure of labyrinth seal leak path increased the block, so to some extent can effectively reduce equipment oil leakage problem, but there are many types of labyrinth form, figure 3, figure 4 are briefly introduced, and the two sealing form. （ 1) Take fixed baize of iron type designed to be 'L' structure, and on the big side mounted on either side of the ring gear and welding a 'U' type, the scheme dustproof effect is good, but when large amounts of equipment oil or cannot effectively oil baffle is shown in figure 3. A lower cost. （ 2) On the outer edge of the baize sealing device to add a seal, points after the two are connected by a bolt on the gear cover, and on the gear cover open one oil of the oil hole will collect the reflux tank as shown in figure 4. The advantage of the device is changed during equipment repair wool felt is convenient, low cost and long service life. 2. 3 choose lipid open gear oil at present mainstream open gear oil types is as follows: pure oil type open lipid open gear oil, gear oil and fluid company open gear oil for pure oil type ( Such as: Klü berfluid_C - F_3 open gear oil) Lipid open gear oil, but fluid within our group of companies have to use ( Such as G. BESLUX CROWN M FLUID open gear oil) 。 Fluid lipid open gear oil because of its liquidity characteristics, as well as meet the requirements of the use of equipment at the same time, to some extent alleviate equipment leak. 2. 4 change the way of large open gear lubrication main lubrication methods for automatic spray lubrication and oil pool lubrication. The old production line, the open gear lubrication way the majority of lubrication oil pool, but with the spray lubrication system from abroad since the introduction of successful use case, such as citic juki ( The former los mine) , northern heavy industries ( The former heavy) Rotary kiln and grinding machine design and manufacturing enterprises, such as automatic spraying system has become the standard of its recommendations to the user configuration. The following respectively introduce the characteristics of lubrication and automatic spray lubrication oil pool. （ 1) Lubrication oil pool: the company coal mill open gear lubrication method for oil pool, for the big gear bearing with oil, the oil spill to small gear tooth surface lubrication, tooth surface covering oil film may be uneven phenomenon. Oil pool lubrication method can guarantee enough oil, enough oil film formation, but of contaminants in the oil products are susceptible to pollution, such as dust, material and welding slag on the casing, etc. , into the oil pool in lubrication, can cause a lot of damage to the tooth surface. The other difficult due to the gear cover seal, equipment oil leakage phenomenon is more prominent. （ 2) Automatic spray lubrication way: the lubrication method is characteristic of tooth surface is able to continuously add fresh oil, can take off the old oil, dust, and a mixture of abrasive, avoid the material leak too much impact on the lubricating oil, mechanical automatic injection method is used to go to overcome the go difficult, the shortcomings of uneven tooth surface covering oil, the oil consumption of controlled adjustable also can save the consumption of lubricating oil. But this approach requires oil spray has a good adhesion ability, performance, anti-wear and extreme pressure properties. Compared to two kinds of lubrication, automatic spray lubrication way just make up for the deficiency of the lubricating oil pool, can effectively solve the problem of open gear oil spill. 3. Options suggested above four kinds of schemes can be from different aspects to improve equipment oil, seal, if consider from cost, the enterprise can choose according to their own conditions for equipment 2. 1, 2. 2 or 2. 3 solutions, but as more and more strict environmental protection, combining lubrication reliability, suggested that enterprises choose products mature, has a certain use performance of manufacturers to provide automatic spray lubrication device, at the same time improve the reliability of the equipment lubrication effectively solve the problem of open gear oil.