用于藤茎类秸秆的大型立式粉碎机设计与试验

Design and test of large vertical crusher for cane stalk

为解决大棚蔬菜秸秆,尤其是藤茎类蔬菜秸秆在粉碎时缠绕刀片、喂料困难、锤片寿命短、整机效率低、粉碎粒径大、轴承温升高、人员劳动强度大等问题,以有机肥制备所需的粉碎粒径和工厂化制肥的产量要求为导向,在充分研究藤茎类秸秆的力学特性基础上,应用双级锤片粉碎的原理,设计大容量喂料转筒、两级串联粉碎机构、浮动式支撑限位座和轴承润滑油智能温度控制系统。以摊晒15 d平均含水率为28%的茄子秸秆为原料进行试验,结果表明:一二级转速分别在1 300 r/min和2 700 r/min时,粒径合格率达到92.8%,度电产量为71.42 kg/(kW·h),生产率为10.8 t/h,各项指标均达到设计要求,并满足使用寿命、能源消耗和维护方便性的综合最优。

In order to solve the problems of vegetable stalks in greenhouses,especially rattan vegetable stalks,such as entanglement of blades during crushing,difficulty in feeding,short hammer life,low efficiency of the whole machine,large crushing particle size,increased bearing temperature,and high labor intensity.Guided by the crushing particle size required for the preparation of organic fertilizers and the output requirements of factory fertilizer production,based on the full study of the mechanical properties of cane straws,the principle of two-stage hammer crushing was used to design a large-capacity feeding transfer tube,two-stage tandem crushing mechanism,floating support limit seat and bearing lubricating oil intelligent temperature control system.The test was carried out with eggplant straw with an average moisture content of 28%after being spread for 15 days.The results showed that when the first and second speeds were 1300 r/min and 2700 r/min,the qualified rate of particle size reached 92.8%,the output per kilowatt-hour was 71.42 kg/(kW·h),and the productivity was 10.8 t/h.All indicators reached the design requirements,and met the service life and energy Comprehensive optimization of consumption and maintenance convenience.