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槽縫氣吸式小麥精量排種器
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“十二五”國(guó)家糧食豐產(chǎn)科技工程資助項(xiàng)目（2011BAD16B08）和河北省科技支撐計(jì)劃資助項(xiàng)目（11220619）


Slot-type Pneumatic Precise Wheat Seed-metering Device
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    摘要:

    設(shè)計(jì)了一種槽縫氣吸式小麥排種器。通過(guò)試驗(yàn)對(duì)比分析了梯形、U形、V形以及“1”字縫隙式槽縫結(jié)構(gòu)的排種器吸種均勻性，梯形槽縫式排種器的吸種變異系數(shù)最小，為7.0%，排種種子破損率小于0.30%，滿足小麥精量播種的要求。但是由于在實(shí)際作業(yè)時(shí)，風(fēng)機(jī)負(fù)壓的波動(dòng)，各縫隙處的氣流吸力的差異，致使該排種器的各行排種量一致性沒(méi)有提高，在不同變速情況下各行排種量的變異系數(shù)不大于4.4%。

    Abstract:

    A kind of trapezoidal slot-type pneumatic wheat seed-metering device was designed. Through experiments, the sucking seed uniformity of the seed-metering device with trapezoidal, U-shape, V-shape slot-type and the straight slot-type was analyzed. The experimental data showed the variation coefficient of the seed metering device with trapezoidal slot-type was the smallest, which was 7.0%, and the seed breakage rate was lower than 0.30%. These data conformed to the requirement of wheat precise seeding. But in the actual operation because of undulation of negative pressure of the wind machine and difference of air current suction in each row slot-type, the consistency of each line seeding quantity of the seed-metering device was not improved. Its variation coefficient was not more than 4.4% in the different speed change situations. 

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趙曉順,于華麗,張晉國(guó),霍曉靜,陳鳳艷,趙金.槽縫氣吸式小麥精量排種器[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2013,44(2):48-51,74. Zhao Xiaoshun, Yu Huali, Zhang Jinguo, Huo Xiaojing, Chen Fengyan, Zhao Jin. Slot-type Pneumatic Precise Wheat Seed-metering Device[J]. Transactions of the Chinese Society for Agricultural Machinery,2013,44(2):48-51,74.

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  • 在線發(fā)布日期: 2013-02-04
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