School of Mechanical Engineering, Hebei University of Technology, Tianjin 300401, China
Show less
文章历史+
Received
Published
2025-01-13
2026-01-08
Online Date
2026-05-27
PDF (24003K)
摘要
为提高金属表面除锈移动抛丸机的使用寿命,减少丸料中杂质含量,优化改进了一款移动抛丸机的回收分离系统,通过计算流体动力学(computational fluid dynamics,CFD)与离散单元法(discrete element method,DEM)耦合的方法,对回收分离过程进行仿真及模拟分析,引入回收分离效率作为量化衡量参数,研究气流速度、挡板结构和抛丸量对回收分离效率的影响,并分别进行仿真验证。结果表明,气流速度、挡板结构改进对提升回收分离效率影响显著,优化改进后的回收分离系统钢丸回收效率达95%以上,杂质分离效率达80%以上,实验结果与仿真结果最大误差小于3%,验证了数值模拟的合理性,可为移动抛丸机回收分离系统结构和工艺参数优化提供理论支持。
Abstract
In order to increase the service life of the mobile shot blasting machine for metal surface rust removal and reduce the content of impurities in the steel shots, a recovery and separation system of mobile shot blasting machine was optimized and improved. The coupling method of computational fluid dynamics (CFD) and discrete element method (DEM) was used to simulate and analyze the recovery and separation process. The recovery and separation efficiency were introduced as quantitative measurement parameters. The influences of airflow velocity, baffle structure, and shot blasting amount on the recovery and separation efficiency were studied, and simulation verification was conducted respectively. Results show that airflow velocity and baffle structure have a significant impact on enhancing the recovery and separation efficiency. Steel shot recovery efficiency of the optimized recovery and separation system is more than 95%, and separation efficiency of impurities is more than 80%. The maximum error between experimental results and simulation results is less than 3%, verifying the rationality of numerical simulation and providing theoretical support for optimization of structure and process parameters of mobile shot blasting machine’s recovery and separation system.
ZHANG Ming-lu, WANG Jian-yu, GAO Chun-yan, LÜ Xiao-ling.
Simulation and Experimental Verification of Recovery and Separation System of Mobile Shot Blasting Machine[J].
Science Technology and Engineering, 2026, 26(1): 112-122 DOI:10.12404/j.issn.1671-1815.2500305
移动抛丸机回收分离系统采用风选分离器[12],其内部为典型的气固二相流,气固二相流中颗粒的运动轨迹在很大程度上受到流动空气的影响,回收分离系统作为移动抛丸机重要部件,对其内部气固流动特性和丸渣分离研究却鲜见报道。目前,二相流问题常采用计算流体力学(computation fluid dynamics,CFD)和离散元法(discrete element method,DEM)耦合求解,以更加准确地模拟二相流复杂的流动行为。王欢等[13]利用CFD-DEM方法研究大尺寸颗粒的气力输送问题,成功获得了不同条件下冰雹抛射运动规律。周甲伟等[14]利用CFD-DEM方法研究了垂直管中流型、压降和颗粒体积分数等参数随气流速度的变化规律。Long等[15]针对黄铁矿流化过程,研究了粒度分布和气体温度对其最小流化速度的影响。林琳等[16]基于CFD-DEM方法对喷嘴磨损量进行分析,研究结果可为喷嘴设计和工业参数制定提供参考。在工程领域,该方法已成为企业解决复杂问题的关键工具:中石化南京工程公司利用CFD-DEM方法对管式固定床反应器进行研究[17];长沙矿冶研究院运用CFD-DEM方法对集矿机构流场特性和采集率进行分析[18];中铁十四局通过CFD-DEM方法总结出了盾构机气垫仓内岩屑排出率对不同因素的敏感度[19]。CFD-DEM还应用于农业方面,为农业机械设计提供实用参考[20-21]。
ZhouR, CaoY P, ShiW D, et al. Experimental study on surface erosion of grade—a marine steel with different curvatures by ultra-high pressure water jet[J]. Journal of Materials Research and Technology, 2024, 31: 3025-3034.
WuYang, LiuYuefang, WangXianjun, et al. Maintenance process for external anti-corrosion coating of storage tank[J]. Science Technology and Engineering, 2023, 23(18): 7753-7757.
[4]
LiX G, HuangT T, ZhouR, et al. Laser cleaning of steel structure surface for paint removal and repaint adhesion[J]. Opto-Electronic Engineering, 2017, 44(3): 340-344.
[5]
XiaoH B, DuC L, ZhangS L, et al. Study on the surface morphology of micro-particles and the oxide layer on silicon carbide crystal using nanosecond green laser cleaning assisted with airflow[J]. Crystals, 2022, 12(12): 1788.
ZhaoYong, GuoJiang, FengJian, et al. Recent progress of cleaning technologies and cleanliness evaluation methods for metal substrates[J]. Journal of Mechanical Engineering, 2023, 59(13): 290-313.
DongJiahou, ZhengJiahong, HeKai, et al. Design of welding seam grinding wall-climbing robot body based on magnetic adsorption[J]. Machine Tool & Hydraulics, 2023, 51(3): 35-43.
WeiXin, ZhaoJunyou, YanChengxin, et al. Design and dynamics analysis of intelligent sandblasting rust-removing system for large oil tanks[J]. Science Technology and Engineering, 2023, 23(21): 9137-9143.
[14]
ZhangJ M, DongX W, ZhouY J, et al. Surface derusting of rust-covered metallic surface via shot blasting: a smoothed particle hydrodynamics simulation[J]. Wear, 2023, 514/515: 204566.
[15]
KovaciH, YetimA F, CelikA, et al. Effects of shot peening pre-treatment and plasma nitriding parameters on the structural, mechanical and tribological properties of AISI 4140 low-alloy steel[J]. Surface and Coatings Technology, 2019, 358: 256-265.
ShangguanLiping, LiChangchun, LiuYulei, et al. Structure analysis of pill and sand separators of the blast cleaning equipment[J]. Foundry Equipment & Technology, 2013(3): 3-5.
HuMingwei, HeJiajian, HanZiyan, et al. Research status and key technology analysis of mobile shot blasting machines[J]. Modern Manufacturing Engineering, 2022(4): 149-157, 111.
WangHuan, SunKe, RenBoyang, et al. Calculation method of particle pneumatic transport based on CFD and EDEM coupling[J]. Science Technology and Engineering, 2022, 22(11): 4603-4608.
ZhouJiawei, GuoXiaole, BaHan, et al. Study of flow pattern for vertical pipe pneumatic conveying by CFD-DEM coupled simulation[J]. Journal of Engineering Thermophysics, 2023, 44(9): 2464-2473.
[24]
LongW, JiJ B, ZengW, et al. CFD-DEM investigation on effects of particle size distribution and gas temperature on minimum fluidization velocity of pyrites[J]. Particuology, 2025, 96: 244-255.
LinLin, ZhangYunpeng, JiangDongcen, et al. Numerical simulation and wear rule analysis of micro-abrasive water jet polishing nozzle[J]. Chinese Hydraulics & Pneumatics, 2023, 47(7): 113-123.
ZhangGang, SongSiduo, ZhuZirui, et al. Study on the characteristics of columnar granular bed in tubular fixed bed reactor based on CFD-DEM method and porous medium model[J]. Petroleum Processing and Petrochemicals, 2024, 55(11): 90-99.
LiJun, ChengYangrui, ZengXuan, et al. Design of small hydraulic mining mechanism for polymetallic nodules based on CFD-DEM[J]. Mining Research and Development, 2024, 44(11): 1-8.
YuWenrui, DingWantao, WangChengzhen, et al. Sensitivity analysis of factors influencing the cuttings discharged ratio in slurry shield based on CFD-DEM method[J]. Science Technology and Engineering, 2024, 24(19): 8052-8061.
[33]
YuanJ B, WuC Y, LiH, et al. Movement rules and screening characteristics of rice-threshed mixture separation through a cylinder sieve[J]. Computers and Electronics in Agriculture, 2018, 154: 320-329.
XuPengqing, DaiFei, ZhaoWuyun, et al. Simulation analysis and experiment of operation process of flax threshing and cleaning device[J]. Transactions of the Chinese Society for Agricultural Machinery, 2023, 54(S1): 161-171.
[36]
ZhangY H, FuX L, MenX H, et al. Analysis of gas-solid two-phase flow and structure optimization of mobile shot blasting machine recovery device[J]. Scientific Reports, 2022, 12(1): 22220.
[37]
AkhshikS, BehzadM, RajabiM. CFD-DEM approach to investigate the effect of drill pipe rotation on cuttings transport behavior[J]. Journal of Petroleum Science and Engineering, 2015, 127: 229-244.
YangHang, LiuFang, LiJiaxiang, et al. Simulation analysis of working parameters of panax notoginseng seeder based on CFD-DEM coupling[J]. Journal of Chinese Agricultural Mechanization, 2019, 40(1): 22-25.
[40]
陈记合. 打磨粉尘小型复合除尘器除尘机理及结构优化研究[D]. 北京: 北京科技大学, 2022.
[41]
ChenJihe. Research on dust removal mechanism and structure optimization of small composite dust collector for polishing dust[D]. Beijing: University of Science and Technology Beijing, 2022.