圆锥破碎机力能参数的研究

发布时间：2019-05-28 07:29

【摘要】：圆锥破碎机作为一种重要的破碎机械,被广泛地应用于冶金、矿山、煤炭、水利、建筑、环保和化工等工业领域。随着矿石品位日趋贫化、采矿和选矿规模不断增加以及能源费用急剧上涨,如何降低单位能耗成为了被关注的重点。而对圆锥破碎机的力能参数进行分析是降低能耗的基础,同时,较为精确的力能参数,也是对不同工况下圆锥破碎机运动学特性加以分析的必要前提,这对提高用户经济利益和促进研发新型破碎设备具有重要的理论和现实意义。本文就圆锥破碎机的力能参数进行了以下研究工作。为了准确分析破碎腔内散体物料的运动规律,通过对圆锥破碎机的动锥和物料的运动特性进行分析,建立了破碎腔内单颗粒物料的运动分析模型,并基于此来对破碎腔内的散体物料进行运动轨迹预测,得到了散体物料在破碎过程中的分层模型,为准确的计算破碎力奠定了基础。圆锥破碎机的破碎力具有随机性和模糊性的特点,为了消除随机性和模糊性给圆锥破碎机研究带来的影响,引入了随机模糊理论。结合随机模糊理论,修正了传统破碎力计算过程中的误差,更为准确的计算出了破碎力在破碎壁表面的分布情况。通过对破碎机的主轴和偏心套的受力分析,验证了求解模型的合理性与准确性。改变散体物料种类以及圆锥破碎机的结构参数和运动参数,分析了不同参数下圆锥破碎机力能参数的变化情况,得到了不同情况下破碎腔内破碎力沿闭边母线的分布与大小,以及在不同给料占比时所需要的破碎功率,将不同进动角和偏心套转速时的力能参数与标准工作参数下的力能参数进行对比,得到的结果对破碎机的生产现场有指导意义。
[Abstract]:Cone crusher, as an important crushing machine, is widely used in metallurgy, mining, coal, water conservancy, construction, environmental protection and chemical and other industrial fields. With the increasing dilution of ore grade, the increasing scale of mining and mineral processing and the sharp rise of energy cost, how to reduce the unit energy consumption has become the focus of attention. The analysis of the force and energy parameters of the cone crusher is the basis of reducing the energy consumption. At the same time, the more accurate force and energy parameters are also the necessary prerequisite for the analysis of the kinematic characteristics of the cone crusher under different working conditions. This is of great theoretical and practical significance to improve the economic interests of users and promote the research and development of new crushing equipment. In this paper, the force and energy parameters of cone crusher are studied as follows. In order to accurately analyze the movement law of bulk materials in the crushing cavity, the motion analysis model of the single particle material in the crushing cavity is established by analyzing the moving cone and the movement characteristics of the materials in the cone crusher. Based on this, the motion trajectory of the bulk material in the crushing cavity is predicted, and the layered model of the bulk material in the crushing process is obtained, which lays a foundation for the accurate calculation of the crushing force. The crushing force of conical crusher has the characteristics of randomness and fuzziness. In order to eliminate the influence of randomness and fuzziness on the research of conical crusher, random fuzzy theory is introduced. Combined with random fuzzy theory, the error in the calculation of traditional crushing force is corrected, and the distribution of crushing force on the surface of broken wall is calculated more accurately. Through the force analysis of the main shaft and eccentric sleeve of the crusher, the rationality and accuracy of the solution model are verified. By changing the types of bulk materials and the structural parameters and motion parameters of conical crusher, the variation of force and energy parameters of conical crusher under different parameters is analyzed, and the distribution and size of crushing force along closed bus under different conditions are obtained. And the crushing power needed at different feed ratio is compared with the force and energy parameters under the standard working parameters at different precession angle and eccentric sleeve speed. The results are of guiding significance to the production site of the crusher.
【学位授予单位】：燕山大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD451

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