5XZ-3.0的重力式清选机的设计-毕业设计.doc

PAGE PAGE 36 摘要 随着农业机械化的发展，农作物种子清选机械也日趋成熟，其中正压式重力清选机发展最快最成熟。通过查阅大量文献资料和现场实习，设计出5XZ-3.0型正压式重力清选机，其生产率为3.0t/h。该机通过双向倾斜且往复振动的工作台和穿过工作台面由下而上的气流进行清选作业，适用于经过风筛式清选机、窝眼滚筒清选机等机具清选过的外形、尺寸较相似的种子分选。 该机具利用比重不同分离出发育不好、成熟不完全、受虫害霉烂和已发芽的种子，以及与种子尺寸相近而质量有一定差异的夹杂物。 关键词 正压式 重力清选机 双向倾斜 往复振动  Abstract With the development of agricultural mechanization, the crops seed cleaner weapon is also getting more and more progressive, the positive pressure type gravity cleaner development is most common. Through the consult massive literature material and the workshop practice, designs the 5XZ-3.0 positive pressure type gravity cleaner, its productivity is 3.0t/h. This equipment to realize chooses the function clear, through can incline and vibrate the work table and passes through work floor air current from bottom to top to complete, it is suitable for the contour which the size similar seed separation passes through primary elects clear. The equipment used to separate different proportions of poor, immature, and has been subject to pests or germination of seeds ,and seed with similar size and quality of a certain difference of impurities. Key word Positive pressure type Gravity cleaner Two direction angles may adjust Reciprocating vibration 目录 TOC \o 1-3 \h \z \u HYPERLINK \l _Toc 摘要 PAGEREF _Toc \h I HYPERLINK \l _Toc Abstract PAGEREF _Toc \h II HYPERLINK \l _Toc 第1章 绪论 PAGEREF _Toc \h 1 HYPERLINK \l _Toc 1.1国内外发展情况 PAGEREF _Toc \h 1 HYPERLINK \l _Toc 1.2结构特点与分类 PAGEREF _Toc \h 3 HYPERLINK \l _Toc 1.2.1 结构特点 PAGEREF _Toc \h 3 HYPERLINK \l _Toc 1.2.2 分类 PAGEREF _Toc \h 3 HYPERLINK \l _Toc 1.3工作原理 PAGEREF _Toc \h 4 HYPERLINK \l _Toc 1.3.1 重力分选原理 PAGEREF _Toc \h 4 HYPERLINK \l _Toc 1.3.2 物料的分层化过程 PAGEREF _Toc \h 5 HYPERLINK \l _Toc 1.4 应用范围 PAGEREF _Toc \h 8 HYPERLINK \l _Toc 第二章 无级变速部分的设计方案及选择 PAGEREF _Toc \h 9 HYPERLINK \l _Toc 第三章 设计计算 PAGEREF _Toc \h 10 HYPERLINK \l _Toc 3.1 总体参数及运动参数的选择 PAGEREF _Toc \h 10 HYPERLINK \l _Toc 3.1.1 振动台振动频率的确定 PAGER