內容簡介：
摘要：本課題是進行打散分級機的內外筒體及對原設計的改進，在筒體設計中我們先確定筒體的尺寸參數，然後對關鍵地方進行受力分析，在改進部分，我們對原設計進行了仔細的分析，指出了原設計的不足之處，然後對其進行合理的改進。打散分級機是九十年代初問世的新型料餅打散分選設備，集料餅打散與顆粒分級於一體，與擠壓機配套使用，可以消除擠壓粉碎機邊緣漏斗和開停機過程中及正常工作時未被充分擠壓的大顆粒對後續球磨系統產生不利的影響，以獲得大幅度增產節能的效果。因為輥壓機操作規程規定：設備啟動時液壓系統應處於卸壓狀態。所以，在輥壓機啟動過程中將有大量未經有效擠壓的物料通過輥壓機。這也是在打散分級機介入擠壓粉磨工藝系統前的擠壓預粉磨系統產量提高幅度不大且存在較大波動的重要原因。打散分級機利用離心衝擊破碎原理對物料進行打散，利用慣性及空氣動力學原理對散狀物了實現分級。在擠壓聯合粉磨工藝系統中應用，可取得增產100％－200％，節約用電30％以上，研磨體消耗降低60％以上的效果。
關鍵詞：輥壓機；擠壓粉磨工藝系統；打散分級機；
The design of the outer shell of SF500/100 Scatter grading device and the original improvement discussion
Abstract：This topic carries on the design of the outer shell of scatter grading device and the original improvement, in the shell design we have determined first the shell’s size parameter, then carries on the stress analysis to the essential place, in the improvement part, we have carried on the careful analysis to the original design, pointed out the original design deficiency, then makes the reasonable improvement to it.Scatter grading device is the new blank cake which is published at the beginning of the 90's hits the divergence to choose the equipment, the aggregate cake to scatter with the size grading in a body, with the extruder necessary use, it may eliminate the disadvantageous influence extrusion grinder edge funnel and opens in when the engine off process and the normal work the big pellet which fully extrudes to the following grinding system has not been produced, which obtains the effect of the large scale production increase energy conservation. Because the rolling machine working instruction has stipulated: when the equipment starts the hydraulic system should be at the release of pressure condition. Therefore, when the rolling machine start process there will have massively material through roller press which have not after the effective extrusion. This is also the important reason that in scatter grading device involvement to push the press powder to be grinded in front of the craft system the extrusion pre- powder to rub the system output to enhance the scope not to be big also the existence big undulation. Scatter grading device carry on using the centrifugal impact crash principle to the material scatters, to disperse the shape realization graduation using the inertia and the aerodynamics principle.The gringing in the craft system in the extrusion union powder may obtain increases production 100% to 200%, frugal uses electricity above 30%, grinds the body consumption reduce above 60%.
Key words： Roller press; Compressed grinding system; Scatter grading device
