Double slipper cement grinding oil seal device

Slipper cement grinding oil sealing device improvement - 2020 12 - 02 Wang Fuhua ( Shandong ShenFeng cement group co. , LTD. ) The company has & Phi; 4. 2× 13 m double slipper cement mill, the normal operation after the installation of production equipments, but grinding head grinding end slipper seal has been leak phenomenon, spill up to 300 kg a day, become a problem to be solved. The company through careful search reason and find a feasible solution, make this problem be solved. A, oil leak reason analysis and improvement plan crawler industrial closed gear oil lubrication station used in load, winter brand L - Brand L - CKC320, summer CKC460。 In practical use more thin lubricating oil is heated, liquidity enhancement, and form a certain pressure within the sealed cover, on both sides of the normal operation to jilt of oil is not much, and oil spill particularly evident when just after grinding. Therefore reduce the oil temperature is the key to solve the problem, solution is to increase the plate heat exchanger, the purpose is to make the oil temperature from 70 ℃ to 30 ℃ or so. Second, the sealing way compared the original sealing form ( See figure 1) , cement grinding cylinder on both sides of the track Settings are two oil tank, oil upper end slipper with painting, theory so as to prevent oil, caterpillar upward sliding shoe cover gasket materials is wool felt outside, in the design of it and splint is dustproof. Initial from sheep felt the leakage of oil, after a long time the sheep felt and the space between the grinding body, directly to the oil spill. The effect is not ideal. Figure 1. The original design of the sealing form 2. 1 the first sealing improvement way ( 1) Order as shown in figure 2 rubber sealing ring, a total of four, and 14 m (the total length of each root The actual grinding body diameter circumference is 13. 5m) 。 In processing is a circle on the whole, 14 m is put out a certain margin. During installation of cut joint set aside 2 ~ 3 cm. ( 2) Form a complete set of the same length of spring, spring is placed in the grooves of the rubber seal. ( 3) On the slipper to cover every 150 mm distance between welding a bolt. ( 4) Production of platen press 2. 2 m each, a total of 24 pieces, as shown in figure 2. Install the rubber sealing ring opening outwards, spring in the groove of the rubber ring, and tighten, make the rubber seal tightly stick grinding cylinder, the opening set aside with baize filler can play a role in dust, then tighten with press, considering the thermal expansion amount of its outlet are set aside margin, as shown in figure 2. Figure 2 improved sealing form 2 of the first one. 2 the second sealing improvement way ( As shown in figure 3) Figure 3 along the sliding shoe cover around welding ( 1) Customized Y type sealing rubber four pillars, each root total length of 14 m. ( 2) Along the sliding shoe cover around fixed welding flange and baffle. ( 3) In a fixed flange for every 150 mm distance between welding M14 & times; 40 of the bolt. ( 4) Make clamp and pressure welding, according to the radian to make 5 # channel steel mill cylinder body simmer bending. In Y type sealing rubber mouth filled with molybdenum disulfide grease, cling to the grinding cylinder installed on 5 # channel steel, fastening with press plate. Three, two seal forms use effect is improved cost 2 respectively. 8 and 3. 40000 yuan, the first form of external baize inside to seal rubber seal, the effect is very good, but the disadvantage is that because of the rubber sealing ring always bearing wear faster, replaced every three months on average, the cost of production is on the high side. The second seal is two layers of protection, depending on the rubber elasticity and good oil lubrication, reduce wear and tear, basic replacement during the first half, and the sealing effect is very good, finally choose the second sealing form. Source: 'sichuan cement'