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氣力集排式油菜精量排種器
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國家自然科學(xué)基金資助項(xiàng)目（50875104）;教育部新世紀(jì)優(yōu)秀人才支持計(jì)劃資助項(xiàng)目（NCET—07—0344）;高等學(xué)校博士學(xué)科點(diǎn)專項(xiàng)科研基金資助項(xiàng)目（20090146110016）


Pneumatic Centralized Metering Device for Rapeseed
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    摘要:

    針對(duì)油菜籽等小粒徑種子的精量播種要求和傳統(tǒng)排種器單體只能實(shí)施單行播種致使結(jié)構(gòu)復(fù)雜的問題,，設(shè)計(jì)了一種氣力集排式排種器,，闡述了結(jié)構(gòu)設(shè)計(jì)的關(guān)鍵技術(shù)。以華雜4號(hào)油菜籽為試驗(yàn)對(duì)象,，取滾筒相對(duì)壓力,、滾筒轉(zhuǎn)速為主要影響因素進(jìn)行了排種均勻性與排種一致性試驗(yàn),，確定各因素對(duì)排種均勻性與排種一致性的影響程度及因素水平優(yōu)化組合。結(jié)果表明：影響排種器排種均勻性的因素主次順序?yàn)闈L筒相對(duì)壓力,、滾筒轉(zhuǎn)速,，且在滾筒相對(duì)壓力為-1.5kPa，滾筒轉(zhuǎn)速為20r/min時(shí),，排種一致性與排種均勻性同時(shí)達(dá)到最優(yōu),，排種器排種性能最好。

    Abstract:

    In order to solve the problem of small seed's precision seeding such as rapeseed seeds and complex structure caused by traditional metering device's multiline sowing, a pneumatic centralized metering device was developed. The structure and parameters were analyzed. With “Chinese hybrid 4” rapeseed as the test object, seeding consistency test and seeding uniformity test were applied to research the vacuum value and rotate speed of the roller that influenced the sowingperformance mainly. According to experiment analysis, the influencing regularity and the optimization of all the factors were defined. The analyses of the experiment results indicated that the vacuum value was the most important factor, the second was rotate speed. The optimum operation condition were: vacuum value of -1.5kPa and rotate speed of the roller of 20r/min. 

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廖慶喜,張猛,余佳佳,劉曉輝.氣力集排式油菜精量排種器[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2011,42(8):30-34. Liao Qingxi, Zhang Meng, Yu Jiajia, Liu Xiaohui. Pneumatic Centralized Metering Device for Rapeseed[J]. Transactions of the Chinese Society for Agricultural Machinery,2011,42(8):30-34.

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