Roller press roller positioning device is improved

Roller press roller is improved 2020 - positioning device 02 - 26 wen-li zhao ( Cangzhou lingang jinyu cement co. , LTD. , hebei cangzhou 061000). A company's annual output of 2 million tons of cement grinding station system for joint cement grinding system, and put into production in 2010. Rolling machine specifications for 160/140, installed power 2 & times; 1120 kw, the roller press overall is good, the system output stability. In one year after the operation, the positioning device of roll system appeared wear too fast, our factory constantly sum up experience in the production, continuous improvement and optimization of a successfully solved this problem. 1 equipment problems in the process of long-term use, roller press a floating roller to locate sliding key device wear faster, cause the roller to the reducer side channeling, activity and bearing up to frame the inside of the move. Caused by wear channeling move the two roller end face of most 5 ~ 8 mm, the average deviation at about 12 mm, roll gap runtime frequently rectify, current wave up to 23 a, lack of overall power, material extrusion effect is bad, the decline in output. In this case, usually bearing positioning sliding key device needs to be replaced. Change the overall lift the need to move when the roll of 300 ~ 500 mm, replace the slide key in the narrow area, operating space is limited, no safety factor. Even skilled staff change, the shortest also need 72 h to complete the process of inspection. The peak season for production of cement enterprise, will affect the market sales for cement out of stock. Therefore, when we each year overhaul will be carried out on the slide key processing, avoid because caused by the wear of the sliding key abnormal downtime. The equipment management department, we have been trying to locate feather structure was improved, make the maintenance more convenient and quick. Through try many times, finally found the solution. 2 axial positioning sliding key device structure transformation in figure 1, the pressure plate is stainless steel material, and the frame welding. And the bearing pedestal welding slider base. Between slide block and the base for the sliding fit, and with the retaining bolt. Wearing plate for ptfe, 8 mm thick, with nylon screw and AB glue connection between slide block, and filling the hole. The whole device is installed as shown in figure 2, the assembly diagram as shown in figure 3, the slider component as shown in figure 4, antifriction plate center and the original sliding key pin overlap, antifriction plate between the clamp and keep zero. 5 mm gap, the gap can ensure the roll gap appeared 20 ram deviation flexible deflection of bearing, main bearing will not bear the extra force. Figure 1 outside side key device signal tutu 2 outer side key device installation drawing 3 tutu 4 slider assembly components during operation, between the antifriction plate and pressure plate filling grease, when wearing plate wear, loosen the retaining bolt and remove the slider from base, replace the new antifriction plate. The whole maintenance process only needs about 2 h, can change at any time by grinding plate, guarantee the positioning effect, each wearing plate can use 4 months or so. 3 effect after the reform, and deviation from the original roll gap under 12 mm to 5 mm, current volatility from 23 to around 10 a, a higher average current compared to the original 6 ~ 8 a, significantly improve the overall power, and the system platform yield also improved accordingly. The whole process of change also need only about 2 h, do not need integral lifting roll system, convenient and quick. After replacement of locating sliding key device, roller press its stable operation, reduce the occurrence of the other parts of the fault, reduce the equipment failure, stop time, reduces the maintenance investment, to the enterprise efficiency of authors have created favorable conditions. Source: cement technology, 2018