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氣力式油菜精量排種器試
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of Pneumatic Precision Metering Device for Rapeseed
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    摘要:

    為探討氣力式油菜精量排種器的性能參數(shù)的最佳匹配,，以排種器的合格指數(shù)、重播指數(shù),、漏播指數(shù),、種子破碎率為評價指標(biāo)，對排種盤轉(zhuǎn)速,、種子帶速度,、正壓區(qū)以及負(fù)壓區(qū)相對壓力進行了單因素和正交試驗。單因素試驗表明：種子破碎率為零,，排種盤轉(zhuǎn)速,、正壓區(qū)壓強、負(fù)壓區(qū)壓強三因素對合格指數(shù),、重播指數(shù),、漏播指數(shù)3項試驗指標(biāo)有顯著影響。正交試驗表明：正壓區(qū)相對壓力為440Pa,，負(fù)壓區(qū)相對壓力為-834Pa,，排種盤轉(zhuǎn)速為15r/min，排種效果最好,，合格指數(shù)可達(dá)94.2%,，重播指數(shù)和漏播指數(shù)均小于

    Abstract:

    3.0%,。In order to define the optimum performance parameters of pneumatic precision metering device for rapeseed, single factor and orthogonal experiments were carried out, with the experimental factors of rotational speed of metering disc, speed of seed belt, pressure and vacuity, employing eligible index, multiple index, miss index, seed damage rate as judging indexes. Single factor experiment showed that the damage rate of seed is zero in every group of experiments，and the other three indexes were remarkably influenced by rotational speed of metering disc, pressure and vacuity. Furthermore,，orthogonal experiment indicates that when the pressure is 440Pa, the vacuity is -834Pa and the rotational speed of metering disc is 15r/min, the eligible index reaches as high as 94.2%, both of the multiple index and the miss index are lower than 3.0%.

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廖慶喜,李繼波,覃國良.氣力式油菜精量排種器試[J].農(nóng)業(yè)機械學(xué)報,2009,40(8):44-48. of Pneumatic Precision Metering Device for Rapeseed[J]. Transactions of the Chinese Society for Agricultural Machinery,2009,40(8):44-48.

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