為提高水泥運輸效率,減少袋裝水泥造成的資源浪費,目前大部分水泥采用小型散裝攪拌車運輸,因為小型攪拌車采用氣力輸送和卸料,卸料速度和卸料剩余率是評價袋裝水泥運輸效率的重要指標水泥罐車卸料效率。采用正確的方法,保證小型攪拌機罐內水泥盡可能的排出,是非常重要的。由于在卸料過程中肉眼無法直接看到罐內水泥,必須采用一些方法來識別水泥的卸料情況。以下是一些確定水泥是否已卸下的簡單方法: Inordertoimprovetheefficiencyofcementtransportationandreducethewasteofresourcescausedbybaggedcement,mostofthecementistransportedbysmallbulkmixersatpresent,becausethesmallmixersusepneumaticconveyingandunloading,andtheunloadingspeedandunloadingresidualrateareimportantindicatorsforevaluatingtheefficiencyofbaggedcementtransportation.Itisveryimportanttousethecorrectmethodtoensurethatthecementinthesmallmixertankisdischargedasmuchaspossible.Becausethecementinthetankcannotbeseendirectlybythenakedeyeintheunloadingprocess,somemethodsmustbeusedtoidentifytheunloadingofcement.Herearesomesimplewaystodetermineifthecementhasbeenremoved:
壓力表檢查方法:中科聚峰攪拌機卸料時,罐內氣壓為1.8-2.4kg/cm~2,卸料完畢,氣壓迅速下降。如果壓力表降0-0.2kg/cm~2,說明罐內水泥基本卸出。
Inspectionmethodofpressuregauge:duringunloadingofZhongkeJufengmixer,theairpressureinthetankis1.8-2.4kg/cm2.Afterunloading,theairpressuredropsrapidly.Ifthepressuregaugedropsto0-0.2kg/cm2,thecementinthetankisbasicallydischarged.
根據(jù)卸料時間的判斷方法,普通水泥罐的卸料速度一般為1-1.2噸/分鐘。如果水泥的裝載重量是32噸,通常需要半小時才能卸下。因此,卸貨時間可根據(jù)卸貨噸位計算。這樣,接線員在前25分鐘就相對容易了。不用長時間盯著壓力表,也不用用其他方法檢查卸料是否完成。
Accordingtothejudgmentmethodofunloadingtime,theunloadingspeedofordinarycementtankisgenerally1-1.2t/min.Iftheloadingweightofcementis32tons,itusuallytakeshalfanhourtounload.Therefore,theunloadingtimecanbecalculatedaccordingtotheunloadingtonnage.Inthisway,theoperatorisrelativelyeasyinthefirst25minutes.Donotstareatthepressuregaugeforalongtime,anddonotuseothermethodstocheckwhethertheunloadingiscompleted.
空壓機聲音識別方法:空壓機在正常卸荷時間和空間內負荷較大,空壓機在運行過程中產生的聲音比較沉悶。卸罐結束時,空壓機負荷變小,工作聲音清脆。
Aircompressorsoundrecognitionmethod:theaircompressorhasalargeloadinthenormalunloadingtimeandspace,andthesoundproducedbytheaircompressorintheoperationprocessisrelativelydull.Attheendofunloading,theloadofaircompressorbecomessmallerandtheworkingsoundisclear.
在卸水泥過程中,可以用手敲打水泥罐。如果聲音中沒有回聲,則證明罐內有大量水泥剩余,需要卸載一段時間;如果罐內有回聲,則證明罐內水泥幾乎排出。 Intheprocessofunloadingcement,thecementtankcanbeknockedbyhand.Ifthereisnoechointhesound,itisprovedthatthereisalargeamountofcementleftinthetank,whichneedstobeunloadedforaperiodoftime;ifthereisechointhetank,itisprovedthatthecementinthetankisalmostdischarged.
卸料膠管觀察方法:正常卸料時,卸料膠管受到流態(tài)化水泥的沖擊,膠管不斷晃動。如果軟管不晃動,也可以證明罐內水泥基本排出。 Observationmethodofunloadingrubberhose:duringnormalunloading,theunloadingrubberhoseisimpactedbyfluidizedcement,andtherubberhosecontinuouslyshakes.Ifthehosedoesnotshake,itcanalsoprovethatthecementinthetankisbasicallydischarged.
根據(jù)水泥接收塔頂揚灰的識別方法,正常卸料時,水泥耗氣量相對較小,“多料少氣”,接收塔頂揚灰較少,卸料后期“少料多氣”,更多的提升灰在接收塔的頂部。
Accordingtotheidentificationmethodofliftingashonthetopofthecementreceivingtower,duringnormalunloading,theairconsumptionofcementisrelativelysmall,"morematerialandlessgas",lessliftingashonthetopofthereceivingtower,and"lessmaterialandmoregas"atthelaterstageofunloading,moreliftingashisonthetopofthereceivingtower.
上述方法中的一種或兩種可用于簡單地確定小型攪拌機的水泥是否已卸下。由于不同的結構、不同的空壓機、不同的水泥接收塔高度、不同的水泥裝車比例,卸料速度和剩余率會有所不同。司機可記錄實際操作方法和卸料時間,并不斷總結經(jīng)驗檢查,獲得操作方法,達到卸料效率。
Oneorbothoftheabovemethodscanbeusedtosimplydeterminewhetherthecementofasmallmixerhasbeendischarged.Becauseofdifferentstructure,differentaircompressor,differentheightofcementreceivingtoweranddifferentloadingproportionofcement,theunloadingspeedandresidualratewillbedifferent.Thedrivercanrecordtheactualoperationmethodandunloadingtime,andconstantlysummarizetheexperienceandchecktoobtaintheoperationmethodandachievetheunloadingefficiency.