Crushing Effect of Double Tooth Roller Crushing Mechanism and Wall Breaker Crushing Mechanism on Kitchen Waste

doi:10.13304/j.nykjdb.2024.0147

Abstract

Abstract:

The intelligent garbage sorting device can automatically recognize and classify garbage， including recyclable garbage， harmful garbage， kitchen waste and other garbage. In order to solve the problem of kitchen waste crushing treatment， the wall-breaking crusher and the double-tooth roller crusher were designed by using SolidWorks， and the discrete element particle bonding model of kitchen waste was established in EDEM， then the simulation experiment was carried out based on these 2 crushers. The results showed that the percentage of small particles crushed by the wall-breaking crusher was higher， such as 86.2% and 39.9% for the crushing object 1 and object 2 in the simulation experiment， and the proportion of particles obtained from the simulation experiment and the prototype experiment were basically the same， with an error of no more than 5%. It could be found that the crushing effect of the wall-breaking crusher was better than that of the double-toothed roller crusher. Above results provided reference for the design of the kitchen waste residue liquid separation and treatment device.

Key words: kitchen waste, wall-breaking crusher, double-tooth roller crusher, SolidWorks, EDEM, MATLAB

摘要：

智能分类垃圾处理装置可将垃圾自动识别分类，归类为可回收垃圾、有害垃圾、厨余垃圾和其他垃圾等。针对餐厨垃圾粉碎处理问题，利用SolidWorks设计破壁机粉碎机构和双齿辊粉碎机构，在EDEM中建立餐厨垃圾的离散元颗粒黏结模型，并基于2种粉碎机构进行仿真试验。结果显示，破壁机机构粉碎的小颗粒占比更高，如仿真试验中对于粉碎对象1和粉碎对象2的小颗粒占比分别为86.2%和39.9%，仿真试验和样机试验所得颗粒占比基本一致，误差不超过5%。由此可见，破壁机粉碎机构的粉碎效果优于双齿辊粉碎机构。以上研究结果为餐厨垃圾渣液分离处理装置设计提供参考。

关键词: 餐厨垃圾, 破壁机粉碎机构, 双齿辊粉碎机构, SolidWorks, EDEM, MATLAB

CLC Number:

TS203

Xuelin DU, Ying LIU, Jiahua ZOU, Yu TU, Can ZHOU, Jinpeng CHENG. Crushing Effect of Double Tooth Roller Crushing Mechanism and Wall Breaker Crushing Mechanism on Kitchen Waste[J]. Journal of Agricultural Science and Technology, 2025, 27(9): 99-109.

杜雪林, 刘颖, 邹家华, 涂宇, 周灿, 程晋鹏. 双齿辊粉碎机构和破壁机粉碎机构对餐厨垃圾的粉碎效果[J]. 中国农业科技导报, 2025, 27(9): 99-109.

Figures/Tables 17

References 24

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因素Factor	对象1 Object 1	对象2 Object 2
单位面积法向刚度Normal stiffness per unit area/（N·m^-3）	12.50×10⁷	6.25×10⁸
单位面积剪切刚度Shear stiffness per unit area/（N·m^-3）	10.00×10⁷	4.16×10⁸
抗拉强度Tensile strength/MPa	4.40	6.42
抗剪强度Shear strength/MPa	2.2	7.7
黏合半径Bonding radius/mm	1.5	0.8

因素Factor	对象1 Object 1	对象2 Object 2
单位面积法向刚度Normal stiffness per unit area/（N·m^-3）	12.50×10⁷	6.25×10⁸
单位面积剪切刚度Shear stiffness per unit area/（N·m^-3）	10.00×10⁷	4.16×10⁸
抗拉强度Tensile strength/MPa	4.40	6.42
抗剪强度Shear strength/MPa	2.2	7.7
黏合半径Bonding radius/mm	1.5	0.8

参数 Parameter	对象1 Object 1		对象2 Object 2
参数 Parameter	物料Material	钢板Steel plate	物料Material	钢板Steel plate
泊松比Poisson’s ratio	0.49	0.30	0.40	0.30
剪切模量Shear modulus/MPa	1.89	70 000.00	311.40	70 000.00
密度Density/（kg·m^-3）	1 200	7 800	1 197	7 800
物料与物料恢复系数 Recovery coefficient of material and material	0.900		0.284
物料与钢板恢复系数 Recovery coefficient of material and steel plate	0.300		0.615
物料与物料静摩擦系数 Static friction coefficient between materials	0.500		0.342
物料与钢板静摩擦系数 Static friction coefficient between material and steel plate	0.500		0.467
物料与物料滑动摩擦系数 Sliding friction coefficient between materials	0.100 0		0.054 5
物料与钢板滑动摩擦系数 Sliding friction coefficient between material and steel plate	0.010 0		0.031 7

参数 Parameter	对象1 Object 1		对象2 Object 2
参数 Parameter	物料Material	钢板Steel plate	物料Material	钢板Steel plate
泊松比Poisson’s ratio	0.49	0.30	0.40	0.30
剪切模量Shear modulus/MPa	1.89	70 000.00	311.40	70 000.00
密度Density/（kg·m^-3）	1 200	7 800	1 197	7 800
物料与物料恢复系数 Recovery coefficient of material and material	0.900		0.284
物料与钢板恢复系数 Recovery coefficient of material and steel plate	0.300		0.615
物料与物料静摩擦系数 Static friction coefficient between materials	0.500		0.342
物料与钢板静摩擦系数 Static friction coefficient between material and steel plate	0.500		0.467
物料与物料滑动摩擦系数 Sliding friction coefficient between materials	0.100 0		0.054 5
物料与钢板滑动摩擦系数 Sliding friction coefficient between material and steel plate	0.010 0		0.031 7

粉碎对象 Crushing object	粉碎机 Crusher	生成bond键数量 Number of generated bonds	破碎bond键数量 Number of broken bonds	破碎键占比 Proportion of broken bonds/%
对象1 Object 1	双齿辊粉碎机 Double-tooth roller crusher	66 397	46 575	70.1
对象1 Object 1	破壁机粉碎机Wall-breaking crusher	69 899	63 135	90.3
对象2 Object 2	双齿辊粉碎机 Double-tooth roller crusher	54 040	22 804	42.2
对象2 Object 2	破壁机粉碎机Wall-breaking crusher	53 998	32 347	59.9