Journal of Food, Agriculture and Environment

Vol 8, Issue 3&4,2010
Online ISSN: 1459-0263
Print ISSN: 1459-0255

Mathematical model and optimization of structure and operating parameters of pneumatic precision metering device for rapeseed


Xiaoyan Deng 1, Xu Li 2, Caixia Shu 2, Haidong Huang 2, Qingxi Liao 2*

Recieved Date: 2010-08-18, Accepted Date: 2010-11-04


The optimization of the structure and operating parameters is a key for the good performance of an automatic precision seeding system, which has been widely investigated through experimental methods by many researchers. This paper focused on the sucking-seed process of the nozzle of a pneumatic rapeseed metering device, and gave several theoretical results on the optimization of structure and operating parameters. Firstly, an optimal model was obtained by minimizing the contact force per point of contact ring while the seed was sucked on the seed nozzle. From this model an optimal relation of the diameter of seed, the cone angle and the diameter of the seed nozzles was obtained. Secondly, an approximate model on the pressure difference of the seed nozzle was introduced. Through model analysis, we provided some optimal conclusions on the diameter of the nozzle, the nozzle number of the metering disc, the radius of orifice and the rotational speed of the metering disc. Furthermore, some experiments were presented to indicate the effectiveness of the theoretical results.


Pneumatic metering device, structure and operating parameters, mathematical model, optimization

Journal: Journal of Food, Agriculture and Environment
Year: 2010
Volume: 8
Issue: 3&4
Category: Agriculture
Pages: 318-322

Full text for Subscribers

Note to users

The requested document is freely available only to subscribers/registered users with an online subscription to the Journal of Food, Agriculture & Environment. If you have set up a personal subscription to this title please enter your user name and password. All abstracts are available for free.

Article purchasing

If you like to purchase this specific document such as article, review or this journal issue, contact us. Specify the title of the article or review, issue, number, volume and date of the publication. Software and compilation, Science & Technology, all rights reserved. Your use of this website details or service is governed by terms of use. Authors are invited to check from time to time news or information.

Purchase this Article:   20 Purchase PDF Order Reprints for 15

Share this article :