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振動篩不同運動形式對顆粒群篩分的影響
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國家自然科學(xué)基金項目（51475090）,、黑龍江省自然科學(xué)基金項目（E2017004）和國家重點研發(fā)計劃項目（2018YFD0300103）


Effect of Different Motion Forms of Vibrating Screen on Screening of Particle Group
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    摘要:

    為研究不同運動形式振動篩的篩分性能，對平面往復(fù),、三移動一擺動,、三移動兩轉(zhuǎn)動振動篩篩面上顆粒的分散程度進(jìn)行分析和試驗?；陬w粒非線性跳動理論,利用Matlab軟件模擬得出顆粒在不同運動形式篩面上的運動狀態(tài),；以分散度為試驗指標(biāo)，利用高速攝像機對玉米顆粒在3種振動平板上的運動進(jìn)行跟蹤,。顆粒在振動平板上的運動規(guī)律證明了顆粒非線性跳動理論分析結(jié)果的正確性，隨著振動篩主軸轉(zhuǎn)速逐漸增大,，顆粒群在3種振動平板上的分散度均呈現(xiàn)先增大,、后減小的變化規(guī)律。在振動篩主軸最優(yōu)轉(zhuǎn)速下,，玉米顆粒群在三移動一擺動,、三移動兩轉(zhuǎn)動振動篩篩面上的綜合分散度分別為38.96mm和40.73mm，較平面往復(fù)振動篩分別提高了14.39％和19.58％,。以篩分效率為試驗指標(biāo),，利用3種振動篩篩面進(jìn)行物料篩分試驗，物料篩分試驗結(jié)果表明,，顆粒群在3種振動篩上的篩分效率由高到低依次為：三移動兩轉(zhuǎn)動振動篩,、三移動一擺動振動篩、平面往復(fù)振動篩,。物料篩分試驗結(jié)果證明了用振動平板對顆粒群分散度進(jìn)行研究的可行性,，同時驗證了平板試驗結(jié)果的正確性。

    Abstract:

    Aiming to determine the screening performance of the vibration screen with different motion forms, the dispersion of particles on the plane reciprocating vibration screen, the vibration screen with three translations and one swing, and the vibration screen with three translations and two rotations were studied. Based on the nonlinear law of particle moving, the movements of particles on different screens with different motions were simulated by Matlab. The dispersity was taken as the experimental index. The motions of maize particles on three kinds of vibrating plate were tracked by high speed camera. The motion law of the particles on the vibration plate verified the correctness of the results of nonlinear law of particle moving based on theoretical analysis. The dispersity of the particles on the three kinds of vibration plates was increased firstly and then decreased with the increase of the spindle speed of the vibrating screen. At optimum rotating speed of the main shaft of the vibrating screen, the comprehensive dispersion of the maize particle group on the vibration plate with three translations and one swing and the vibration plate with three translations and two rotations were respectively 38.96mm and 40.73mm, which were 14.39% and 19.58% higher than that of the plane reciprocating vibration plate. The screening efficiency was taken as test index, and vibrating screens with three kinds of motions were tested for screening material. The results of material screening test showed that the screening efficiency of particle group on three kinds of vibrating screens from high to low was: the vibration screen with three translations and two rotations, the vibration screen with three translations and one swing and plane reciprocating vibrating screen. The results of material screening test verified the feasibility of studying the dispersion of particle group by using the vibrating plate and the correctness of the results. The research results provided references for the analysis of screening performance of the vibration screen with different motion forms and the design and application of the new vibration screen.

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王立軍,崔友強,鄭招輝,馮鑫,沈?qū)毶?李義博.振動篩不同運動形式對顆粒群篩分的影響[J].農(nóng)業(yè)機械學(xué)報,2019,50(6):119-129. WANG Lijun, CUI Youqiang, ZHENG Zhaohui, FENG Xin, SHEN Baoshan, LI Yibo. Effect of Different Motion Forms of Vibrating Screen on Screening of Particle Group[J]. Transactions of the Chinese Society for Agricultural Machinery,2019,50(6):119-129.

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  • 收稿日期:2018-10-15
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  • 在線發(fā)布日期: 2019-06-10
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