Xingbang cone crusher to accelerate high-speed construction

Xingbang cone crusher to accelerate high-speed construction

Maanshan Iron & Steel Group, Nanshan iron ore is a large open pit mine, was built in the 1960s, mining, mineral processing as a whole, the annual ore processing up to 6 million tons, and its processing plant ~ 2700mm 3600 mill 2O Taiwan The core equipment, plant selection, because there is no manufacturing capacity of large rolling bearings, so the use of hydrodynamic plain bearings for the support system. According to the analysis of the processing plant production, the support means and the lubrication system the following problems. (1) is a hydrodynamic plain bearings, in the static friction bearings in the starting state, the starting load, the starter motor when the impact of current, and could easily lead to the phenomenon of motor blasting. (2) thin oil lubrication,cone crusher oil pipelines longer seal difficult to resolve, could easily lead to leak, causing the lubricant loss. (3) due to the sliding bearing axial dimension, resulting in less space between the slide bearings and ball mill Simplified, is not conducive to the cleaning of the bottom of the sliding bearing debris, could easily alicey599 lead to sewage, slurry into the lubricating oil circuit, lubricant contamination, resulting in oil mechanical performance, failure, or even result in a bush-burning equipment accidents. The transformation of the mill support system in June 2005, the ore processing plant in Nanshan transformation of the ball mill bearings, hydrodynamic plain bearings to support the bearing support instead. Fixed hubFixed set of upper and lower split structure, 6 ~ 16 bolt preload between the hollow shaft, fixed sets, and the hollow shaft with the not enough to pass the ball mill work required for load bearing will need to conduct heat mounted,Rotary dryer the bearings will slow heating to 230cl = around, and then the assembly in place, use of cold contraction of the bearing inner ring to meet the work requirements.

The necessary transformation of bearings for large non-standard bearings,cone crusher inner and outer diameter 1060,stoner crusher l400 use an ordinary structure of the bearings, the disasbly will be very difficult, therefore, this transformation is optional diameter pushed aside the bearing is 1:25. After transformation, the effect of (1) the original plain bearings optional single oil wedge hydrodynamic plain bearings, ball mill at the start, with the hollow shaft from standstill to operating state, the film also will be formed in this process hollow shaft diameter to the maximum of the move, move up to 22.5mm, the master of the ball mill, the accuracy of the passive gear meshing have some impact.Bearing support instead, this move can be eliminated to improve the mill main passive gear meshing accuracy, and help to improve the smooth operation of the mill and reduce noise. (2) After the transformation, the rolling bearings with grease lubrication, out of the original lubrication system, greatly reducing the failure rate of the ball mill operating rates improved.According to statistics, up to about 94% in the current operating rate from about 88%. (3) to reduce power consumption,brick making machine usually Rolling and plain bearings, friction coefficients were around 0.05 and about 0.1, to reduce the power consumption of about 5%, this ball mill and on-site detection of synchronous motor operating current is consistent bearing transformation, the normal operating current of the mill synchronous motor is 38 ~ 40A, the transformation of the normal operating current is 36 ~ 38A, dropped 2A or so, and the mill power supply voltage is 6000V, therefore, the operating rate of 94% calculated Taiwan ball mill annual saving of 84,000 kwh, energy-saving effect is quite remarkable.