Abstract
In order to discover the damage mechanism and improve separation performance in the separation process of potato-soil mixture, the experiment was conducted on an in-house test-bed. The impact recording device and high-speed camera technology were employed in order to obtain the instantaneous dynamics of the potato-soil mixture for detail data analysis. Five vibration intensities were defined according to the vibration frequency and amplitude. It was found that the mean number of impacts and maximum impact acceleration increased significantly as the level of vibration intensity rose. As a result, the separation performance increased significantly, however, the bruising rate also increased to a certain extent. The mathematical relationship between the maximum impact acceleration and the factors of interest, including vibration amplitude, the vibration frequency and the operating speed of the separation sieves was established through the response surface experiment. It was demonstrated that the presented model was capable to reflect the degree of the factors on influencing bruising rate and separation performance. According to the significance on the maximum impact acceleration, the factors of interest were given in a descending order with vibration frequency, vibration amplitude, running speed of the separation sieve. A set of the optimum operating parameters were found to achieve a desired separation performance as follows, the vibration amplitude was 34.1 mm, the vibration frequency was 5.24 Hz, the running speed of the separation sieve was 2.05 m/s; where the maximum impact acceleration was 98.62 g, the relative error was 3.23%, the bruising rate was 1.81% and the separation performance was 98.5%. The presented model can potentially provide a technical reference for further investigation of the separation mechanism and development of measures for reducing the loss of separation. Keywords: potato, impact recording, high speed camera, potato-soil separation, mechanization, movement characteristics DOI: 10.25165/j.ijabe.20191205.4573 Citation: Wei Z C, Li H W, Mao Y J, Sun C Z, Li X Q, Liu W Z, et al. Experiment and analysis of potato-soil separation based on impact recording technology. Int J Agric & Biol Eng, 2019; 12(5): 71–80.
Highlights
China has the largest planting area and highest yield of potato in the world, the mechanization level of potato production cannot meet the actual demand[1,2,3]
On the contrary with low frequency and low amplitude separation, as the vibration frequency of jitter rubber wheel increases, and the vibration frequency increases up to three times, the mean maximum impact acceleration has increased by 59.4%, the separation performance has increased from 87.3% to 91.9%, but unfavorable bruising rate has increased by 117.3% as well
In order to reflect the influence of various factors on the bruising rate and separation performance, the analysis of response surface mainly focuses on the effect of vibration amplitude, vibration frequency and running speed of the separation sieve on the maximum impact acceleration
Summary
Which takes intense labor, yet low harvesting efficiency[7]. In order to improve the separation performance of potato-soil and obtain better clod crushing performance, most of the research have focused on vibration and arrangement of the separation device[8,9]. All objectives of the studies above are reducing quality loss of agricultural products through decreasing number and intensity of impact in potato harvesting process[23]. It is extremely difficult to carry out a systematical experiment to acquire ideal results due to complexity of the system with a number of variables based on existing potato harvester For this reason, the work on optimizing and improving the structure of potato harvester and reducing the loss during mechanized harvesting process are strongly limited. A new separation device of potatoseparation for a potato harvester with two vibration intensity adjusting device is developed The objectives of this preliminary study are as follows: (1) Potato-soil separation experiment under different vibration intensity conditions was conducted to improve the harvesting quality. The objectives of this preliminary study are as follows: (1) Potato-soil separation experiment under different vibration intensity conditions was conducted to improve the harvesting quality. (2) Response surface analysis experiments were conducted to achieve a desired separation performance. (3) The technology of impact recording and high-speed camera were utilized to provide technical record for further investigation of the separation mechanism and the mathematical relationship between the maximum impact acceleration and the factors of interest, including vibration amplitude, the vibration frequency and the operating speed of the separation sieves was established
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: International Journal of Agricultural and Biological Engineering
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
