Experimental research of the mechanism and particle flow in screw conveyer

Experimental research of the mechanism and particle flow in screw conveyer

Meiqiu Li Jingbo Luo  Bangxiong Wu  Jian Hua 

School of Mechanical Engineering, Yangtze University, Jingzhou 434023, China

Corresponding Author Email: 
21 September 2017
| |
2 November 2017
| | Citation



This paper aims to disclose the mechanism of the screw conveyor and detail the particle flow inside this type of conveyor. To this end, the author discussed the relationship between the trajectory angle of particle motion and several key parameters based on the fluid mechanics. Then, a theoretical model of particle flow was established for screw conveyor of sand, considering the lateral sliding efficiency, the fill rate and the theoretical maximum mass flow rate. The theoretical analysis shows that the outlet mass flow rate depends on such parameters as the inclination angle, rotation velocity and pitch. Through several tests, the author obtained the variation patterns of the fill rate with rotation velocities and pitches, and those of the outlet mass flow rate with inclination angles, rotation velocities and pitches. After that, the change law obtained by our theoretical model was contrasted with that observed in Reference. The comparison shows that the two laws are basically the same. Thus, the proposed model is accurate enough to be applied in the practical design of the screw conveyor.


screw conveyor, outlet mass flow rate, fill rate, trajectory angle, particle flow

1. Introduction
2. Velocity Analysis
3. Outlet mass Flow Rate
4. Case Study
5. Conclusions

[1] Deng BQ, Chen H. (2011). Study on the development trend of the mixed sand truck. China Petroleum and Chemical Standards and Quality 07: 193. https://doi:10.3969/j.issn.1673-4076.2011.07.161

[2] Liu C. (2013). Model test similarity design and numerical simulation of the spiral sand conveyor. China Petroleum Machinery 1:55-58. https://doi: 10.3969/j.issn.1001-4578.2013.01.014

[3] Weiling A, Jin GL, Zhu ZC. (1964). Research on the conveying process of vertical screw conveyor. Lifting transport machinery 12(2): 18-22.

[4] Song R. (1993). Conveying mechanism of horizontal screw conveyor. Journal of Wuhan University of Technology [Transportation Science & Engineering] 03.

[5] Huang SM. (1998). Screw conveyor transport mechanism and the determination of its main parameters. Paper Science & Technology (3): 27-31.

[6] Hu YK, Dai LL. (2000). Theories and calculation of the auger -type conveyer. Journal of Nanchang University (Engineering Edition) 22(4): 29-33. https://doi:10.3969/j.issn.1006-0456.2000.04.008

[7] XuYW. (2008). Selection of design parameters of screw conveyor. Brick World (7): 32-37.

[8] Xiang DZ, Xu YW. (2010). Design parameter selection of spiral conveyer. Cement Technology. https://doi: 10.3969/j.issn.1001-6171.2010.01.004

[9] Xu Y. (2008). The choice and decision of design parameters for screw conveyor for rubber industry. China Rubber/plastics Technology & Equipment.

[10] Nilsson PJI. (1971). On the vertical screw conveyor for non-cohesive bulk materials. Acta Polytechnical Scadinavica Mech. Eng. Sevies 64: 1-96.

[11] li l, hu y, wu h. (2010). Analysis and optimization of sand transporting capacity of spiraling sand blender. Petroleum Machinery 38(6): 96-98. https://10.16082/j.cnki.issn.1001-4578.2010.06.001

[12] Jin R, Yan M. (1995). Design of large-dip screw conveyor and parameter selection. Inner Mongolia Highway and Transport, 43: 37-39.

[13] Roberts AW. (1999). The influence of granular vortex motion on the volumetric performance of enclosed screw conveyors. Powder Technology 104(1): 56-67. https://doi.org/10.1016/S0032-5910(99)00039-XGet rights and content