颚式破碎机河南郑州颚式破碎机厂家颚破机PE200x300
颚式破碎机的工作部分是两块颚板,一是固定颚板(定颚),垂直(或上端略外倾)固定在机体前壁上,另一是活动颚板(动颚),位置倾斜,与固定颚板形成上大下小的破碎腔(工作腔)。活动颚板对着固定颚板做周期性的往复运动,时而分开,时而靠近。分开时,物料进入破碎腔,成品从下部卸出;靠近时,使装在两块颚板之间的物料受到挤压,弯折和劈裂作用而破碎。
颚式破碎机(颚破)分简单摆动颚式破碎机和复杂摆动颚式破碎机两种类型,它们的工作原理很相似,动颚的运动轨迹有较大的差别。简单摆动颚式破碎机,因动颚是悬挂在支承轴上,所以当动颚作往复运动时,动颚上各点的运动轨迹都是圆弧形,而且水平行程上小下大,而以动颚的底部(排矿口处)为最大。由于落入破碎腔的矿石,上部均为大矿块,往往达不到矿石破碎所必需的压缩量,故上部的大块矿石,需反复压碎多次,才能破碎。破碎负荷大都集中在破碎腔的下部,整个颚板没有均匀工作,从而降低了破碎机的生产能力。同时这种破碎机的垂直行程小,磨剥作用小,排矿速度慢。但颚板的磨损较轻,产品过粉碎少。复杂摆动颚式破碎机,由于其动颚又是曲柄连杆机构的连杆,在偏心轴的带动下,动颚上点的运动轨迹近似椭圆形,椭圆度是上小下大,其上部则近似圆形。这种破碎机的水平行程正好与简摆颚式破碎机相反,其上部大下部小,上部的水平行程约为下部的1.5倍,这样就可以满足破碎腔上部大块矿石破碎所需的压缩量。同时整个动颚的垂直行程都比水平行程大,尤其是排矿口处,其垂直行程约为水平行程的3倍,有利于促进排矿和提高生产能力。实践表明,在相网条件下,复摆颚式破碎机的生产能力比简摆颚式破碎机高30%左右。但颚板的磨损快,产品过粉碎严重。
Jaw crusher/Compound pendulum jaw crusher/Zhengzhou jaw crusher manufacturer in Henan/Jaw crusherPE200x300
The working part of a jaw crusher consists of two jaw plates. One is a fixed jaw plate (fixed jaw), which is vertically (or slightly inclined at the upper end) fixed on the front wall of the machine body. The other is a movable jaw plate (movable jaw), which is inclined in position and forms a crushing chamber (working chamber) with a larger upper part and a smaller lower part with the fixed jaw plate. The movable jaw plate performs periodic reciprocating motion against the fixed jaw plate, sometimes separating and sometimes approaching. When separated, the material enters the crushing chamber and the finished product is discharged from the lower part; When approaching, the material placed between the two jaw plates is crushed by compression, bending, and splitting.




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