Design and Experimental Study of a Wine Grape Covering Soil-Cleaning Machine with Wind Blowing

Abstract

Due to the cold and dry climate during the winter season of Central Asia, in order to prevent frostbite and vines drying out for wine grapes, the common methods are burying the vines in winter under a thick layer of soil and then cleaning them out in the next spring. The design of existing vine digging machinery is not precise enough and can only remove the outer layer of the soil on both sides and the top. It cannot clean the soil from the central area of the buried vine. Sometimes, the branches and buds get damaged due to uneven driving condition. To solve the problem, an innovative non-contact blower was designed and tested to clean the vine. In this paper, the design specifications and operation parameters of the blower were determined according to the agronomic properties of the grapevines. Fluent-EDEM coupling, that is, with the help of Engineering discrete element method (EDEM) and CFD fluid simulation software Fluent, was the most common method for dynamic simulation of gas-solid two-phase flow. The Fluent-EDEM coupling simulation was used to simulate the dynamics of soil particles under the action of different wind speeds and blowing patterns, with the goal of a high soil cleaning rate. A prototype of the soil cleaning blower was manufactured and tested at the vineyards of Ningxia Yuquanying Farm in China. The results showed that the blower had an operation efficiency of 4669 m2·h−1, with an average soil removal rate of 80%. The efficiency of covering soil cleaning and rattan raising was greatly improved, and the damage rate of the vines, branches and the buds was greatly reduced.

Physical parameter measurement and discrete element simulation parameter calibration with fresh Rhizoma polygonati

“…The collision recovery coefficient reflects the ability of a colliding object to recover to the original shape [23]. Newton's collision law implies that for two objects with known materials, the recovery coefficient is defined as the ratio of the relative separating velocity between two colliding objects to the relative approaching velocity before the collision [24][25]:…”

Overwintering covered with soil or avoiding burial of wine grapes under cold stress: Chinese wine industry's past and future, challenges and opportunities

“…The residual soil still needs to be removed manually. To achieve full soil cleaning effect, a wine-grape noncontact blower that can be hung on a tractor and operated while driving can use a scraper to remove 60% of the cold-proof soil and then use a blower to blow away the remaining soil (Yang et al 2021 ). However, this method will cause dust to blow across the sky in the process of operation, affecting the ecological environment and human health.…”

Design and Experiment of the Combined Machine for Transplanting Outcrop of Codonopsis with Micro Ridge Covered with Film

“…When studying the operation rule of the shaper for collecting soil on the ridge and analyzing the main influencing factors on the quality of collected soil on the ridge, it is found that the quality of collected soil on the ridge is not only related to the structural parameters and soil parameters of the shaper but also to the installation angle of the shaper. Suppose the angle between the working surface of the shaper and the moving direction of the machine is α (that is, the installation angle α), then the larger the installation angle α, the larger the operation width and the greater the resistance of the scraper, which is prone to cause the soil to be piled up [16][17][18]. If the installation angle α is too small, it cannot meet the required width of the seedbed, that is, the installation angle α should be reduced when the required width of the seedbed is met.…”