Exploration Of Bionic Micro-electroosmosis For Anti-adhesion And Desorption

Agriculture is the foundation of the national economy, and agricultural mechanization and its modernization are the essential way to achieve agricultural modernization. The current resource and environmental problems require us to develop a sustainable development road of agricultural mechanization, which is resource-saving and environment-friendly. Soil adhesion occurs widely in soil-engaging components of agricultural machinery. It seriously affects the efficiency, life and work quality of agricultural machinery, which restricts the use and development of agricultural machinery. Therefore, it is an urgent need to develop effective technologies and methods for reducing adhesion and desorption. Soil animals with excellent features of anti-adhesion show the way to solve soil adhesion for us.Based on the summary and analysis of the theory of electro-osmosis, soil electro-osmosis foundation, bio-electroosmosis and bionic electro-osmosis, this study presents a new technical idea of bionic micro-electroosmosis. Verified experiments that measure earthworm body surface potential have been operated, which is learned from previous methods. The results showed that the earthworm body surface potential is between a dozen milivolts to dozens of milivolts. The potential of earthworm mucus collected by electrical stimulation was measured through Malvern Zetasizer Nano ZS90 nano-particle potential analyzer. The results showed that earthworm mucus is with a negative potential which is of between-13.0 m V and-21.1 m V.The potential level with which earthworm generate the feature of anti-adhesion is in millivolts. Thus, this study was to explore the effectiveness of the bionic micro-electroosmosis method for anti-adhesion and desorption. Six different samples were designed and fabricated, and they was loaed on four kinds of soil with different water moisture by MTS universal testing machine to do sample pull-off experiments.Optimal sample with the minimum pull-off force and the maximum reducing adhesion rate was selected by bionic micro-electroosmosis experiments for reducing adhesion. The influence of water moisture of soil, load, electro-osmosis voltage, electro-osmotic time on the anti-adhesion effect in bionic micro-electroosmosis experiment was investigated. The results showed that sample pull-off force increases with the increase of soil moisture and load. But, the anti-adhesion rate of bionic micro-electroosmosis method increases and the effect of reducing adhesion get better. The relationship of anti-adhesion rate with bionic micro-electroosmosis method and electro-osmosis voltage is approximately linear and the linear regression equation was obtained as follows: y = 1.31 × 10-2- 0.382. The relationship of anti-adhesion rate with bionic micro-electroosmosis method and electro-osmosis time is approximately linear and the linear regression equation was obtained as follows: y =0.113- 0.334.Diferent dump truck model samples were designed and fabricated to perform bionic micro-electroosmosis desorption experiments. Optimal sample with the best desorption effect was selected. The desorption effectiveness of bionic micro-electroosmosis method in a multi-cycle operation was examined. The results showed that the desorption effect of bionic micro-electroosmosis method in a multi-cycle operation is obvious.