气力滚筒式精密排种器结构设计及试验

510642、、。1。、、。1．2～1．8mm－7kPa8L/min0．15kPa1km/h99．52%0．24%0．24%2．44%。135mm。S223．2+6A1003－188X201601－0172－05020070．17hm220130．21hm220075．47t20137．06t1。1/32。3－5。。、6。。1、、、、、、1。2015－02－06“863”[e-mail]。[e-mail]。1．2．3．4．5．6．7．8．9．10．11．1Fig．1Structurediagramofmeteringdevice2。3。。、。。1·271·201611DOI:10.13427/j.cnki.njyi.2016.01.037。。135mm。1．2．2Fig．2Structurediagramofairchamber1．2．3Fig．3Structurediagramofseedplate22．180≥95%≥98%≤7%1．2～1．8mm2．0g。2．2ZW1200CZQGM511MF5706－N－25。4。。、。PLC。SPSS16．0Excel。1．2．3．4．5．6．7．U8．9．10．4Fig．4Experimentaldevice2．3GB/T6973－2005《》7、、8－9。。、10～20cm1012cm。、、4。。。33．13．1．11km/h8L/min0．1kPa－2、－4、－6、－8kPa45。5－2kPa0·371·201611－4kPa。、。5Fig．5Ｒelationshipbetweenindexesandnegativepressureofseedsuction3．1．21km/h－4kPa0．1kPa2、4、6、8、10L/min46。6Fig．6Ｒelationshipbetweenindexesandtheairflowofseedcleaner62L/min8L/min。、。3．1．3－4kPa0．1kPa8L/min1、1．25、1．5、2、2．25、2．5、2．75、3km/h97。7Fig．7Ｒelationshipbetweenindexesandoperatingspeed72km/h2km/h。、。3．1．41km/h－4kPa8L/min0、0．1、0．2、0．3、0．4kPa58。80kPa0．4kPa、、0kPa00．3kPa·471·201611。、。8Fig．8Ｒelationshipbetweenindexesandpositivepressure3．2、、4。L1645。51。9～12。1Table1LevelsandfactorsofthetestA/kPaB/L·min－1C/kPaD/km·h－11－470．051．02－580．101．53－690．152．04－7100．202．59。A4B2C3D1。9Fig．9Visualanalysisdiagramsofeligibleindex10。A4B3C2D1。10Fig．10Visualanalysisdiagramsofmissindex11。A1B4C3D1。11Fig．11Visualanalysisdiagramsofmultipleindex12。A4B2C3D1。12Fig．12Visualanalysisdiagramsofvariablecoefficient、、4A4B2C3D1－7kPa8L/min0．15kPa1km/h。4、、、、。·571·201611－7kPa8L/min0．15kPa1km/h99．52%0．24%0．24%2．44%。。1．2014EB/OL．2014－08－13．http//．qianzhan．com/analyst/detail/220/140813－4c38abf6．html．2．J．201221－6．3．D．2012．4．D．2009．5．J．20081141－146．6．．J．200163－5．7GB/T6973－2005S．8．J．200940844－48．9．D．2012．10．J．2009732－32．DesignandExperimentofPneumaticCylinder－typePrecisionSeed－meteringDeviceFuYaomingZhangJingWuGangLvYingZhouShilinSunFangyuanLiZhiweiCollegeofEngineeringSouthChinaAgriculturalUniversityGuangzhou510642ChinaAbstractInordertosolvethehighlaborintensityinvegetablesordereddirectseedingdesignedandmanufacturedapneumaticroller－typeprecisionmeteringdeviceemployingeligibleindexmultipleindexmissindexvariablecoeffi-cientasjudgingindexes．Themeteringdevice’sstationarygasdistributiondiscmatchwithmeteringplateemployingsidebreathingtorealizenegativepressureseedsuckingandpositivepressureseeddischarging．Eachmeteringdevicedis-chargeonerowfeedoutletispositionedinthehorizontalposition．Inordertodefinetheoptimumperformanceparame-tersofprecisionmeteringdevicesinglefactorandorthogonalexperimentswerecarriedoutinlaboratorywiththeexperi-mentalfactorsofnegativepressureseedsuckingpositivepressureseeddischargingflowofblowseedsandoperatingspeed．Experimentindicatesthatwhenseeddiameteris1．2～1．8mmmeteringdevice’soptimumperformanceparame-tersarethevacuityis－7kPathepressureis0．15kPatheflowis8L/minandtheoperatingspeedis1km/htheeligibleindexreachesashighas99．52%bothofthemultipleindexandthemissindexare0．24%thecoefficientofvariationis2．44%．Themeteringdevicecanalsoconnectedwithapluralityofseedingmonomerbycouplingtorealizemultirowsowingatthesametimeminimumrowspacingis135mm．Keywordsseed－meteringdevicepneumaticvegetablesowing·671·201611