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本文介绍了锤式破碎机的锤头及反击式破碎机的板锤对单块脆性球状物料碰撞的理论分析。获得了在破碎过程中锤式破碎机的锤头碰撞后角速度的变化、锤头及反击式破碎机转子的能量减少、被破碎物料颗粒的能量增加和系统能量消耗的各种关系,阐述了这些关系成立的必要条件。本文也介绍了四种岩石物料在碰撞速度为0～70米/秒范围内的恢复系数(包括样块未破碎及已破碎的情况)的各种研究方法和结果。现已发现:碰撞速度较小时恢复系数的值是个常数;碰撞速度增大到物料发生破碎时恢复系数的值则减小;碰撞速度继续增大到使物料破碎成较多的颗粒时恢复系数的值则接近于零。因此,计算锤式破碎机及反击式破碎机的工作参数时,恢复系数的值可当作零来处理。
This paper introduces the hammer hammer crusher and impact crusher hammer on a single fragile spherical collision of the theoretical analysis. The relationship between the angular velocity of the hammer crusher after striking the hammer, the energy reduction of the hammer and the crusher rotor, the energy increase of the crushed material particles and the energy consumption of the system was obtained during the crushing process. Necessary conditions for the establishment of relations. This paper also introduces various research methods and results of the recovery factors (including the unbroken and broken samples) of four kinds of rock materials in the collision velocity range of 0-70 m / s. It has been found that the value of the coefficient of restitution is constant when the collision velocity is small, the value of the coefficient of restitution decreases as the collision velocity increases until the material is crushed, and the collision velocity continues to increase to a point where the material breaks down into more particles The value is close to zero. Therefore, the calculation of hammer crusher and crusher operating parameters, the value of the recovery factor can be treated as zero.