NE150 chain bucket elevator sprocket device under improvement

NE150 chain bucket elevator sprocket device under 2020 - improvement 12 - 30 ZuoJianHua suzhou dongwu cement co. , LTD. , jiangsu wujiang 215212 ne150 chain bucket elevator is used for conveying finished cement, the chain wheel is rolling bearing support. Production of the middle and lower sprocket shaft and seal between the casing failure. We will be bearing, sliding bearing, then make changes to the appropriate component. Changed after the structure not only ensure casing seal, also reduce the wear and tear of the chain. An analysis of, problem lower hoist structure as shown in figure 1. The sprocket shaft seal is mainly used both inside and outside the casing set active dust seal plate, two pieces of clingy casing seal on both sides. By chain transmission characteristics, the sprocket and chain meshing process will produce a certain range of moving up, down, and dust seal plate is set on the chain wheel shaft, use of internal and external slippery course orientation, operation with sprocket have certain amplitude, sliding, time grows, dust seal plate and creates space between the casing, dust to escape. In addition the elevator entrance adopt chute into, that the lower part of hoist easy generation is local positive pressure, make the material leakage. Second, the solution ( 1) Sliding bearing using the old NE of fabrication and installation elevator sprocket shaft, the shaft end processing, will be in the collar with interference fit perfectly on the shaft, the outer sleeve is excellent for interference fit again in processed within the outer sleeve seat in advance. Internal and external shaft sleeve choose NSE400 bucket elevator sprocket with collar, just match the product diameter size under NE150 bucket elevator sprocket shaft. Installed using the original scroll and the framework of the bearing, sliding bearing components, fixing and use the original slides. Add a pair of flange welding on the outside of framework, and deserve to cover plate, a complete set of sliding bearing group fully enclosed within the framework, to achieve sealing dust. ( 2) Sealing dust removal of the original activity board and counterweight box because adopts full enclosed, dust seal plate can be removed, the original dust seal friction between the plate and the casing disappear, sprockets in operation by self weight and against chain rotation, thus the original counterweight ( The closet) Also can be removed, so reduce the tension of chain, is helpful to reduce the chain wear and prolong the cycle chain. ( 3) Increase a pair of spring and screw, its action can increase the sprocket stability in operation, the screw has a benchmarking role at the same time, as long as the screw length, at ordinary times can intuitively know the chain and wear it well, provide convenience for tight chain in time. Under the elevator sprocket improved structure as shown in figure 2. Third, the effect of the improved, equipment operation stable and reliable, and ash leakage completely solve. In May 2009 after operation, no cut the chain, the chain wear condition improved, normal maintenance convenience simple, lower equipment basic trouble-free. Source: 'cement'