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高速離心機(jī)簡(jiǎn)介

時(shí)間:2011/10/14閱讀:535
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由于技術(shù)的進(jìn)步,到20世紀(jì)末達(dá)到28000~30000r/min(約100000g)。大部分高速離心機(jī)由于不帶真空系統(tǒng),操作類似于低于離心機(jī),非常簡(jiǎn)便,而其功能足夠強(qiáng)大,可替代一部分超速離心機(jī),而超速離心機(jī)的操作復(fù)雜,維護(hù)既麻煩又昂貴。除處理量較小的微量高速離心機(jī)以外,高速離心機(jī)都帶冷凍系統(tǒng),以抵消轉(zhuǎn)子在高速旋轉(zhuǎn)中產(chǎn)生的熱量,確保生物樣品在離心操作中不變性。高速冷凍離心機(jī)的使用溫度一般在4~6℃,而要求控制在±2℃。有的高速離心機(jī)帶真空系統(tǒng),它的真空是部分真空,真空度不高。其目的是減少轉(zhuǎn)子在空氣中摩擦生熱,減少轉(zhuǎn)子旋轉(zhuǎn)噪聲,也有利于減輕電機(jī)負(fù)荷,延長驅(qū)動(dòng)系統(tǒng)的壽命。高速離心機(jī)的主要指標(biāo)是zui高轉(zhuǎn)速和zui大轉(zhuǎn)子容量。由于機(jī)械強(qiáng)度的原因,體積小的轉(zhuǎn)子zui高轉(zhuǎn)速高,而大容量轉(zhuǎn)子的zui高轉(zhuǎn)速則低。高速冷凍離心機(jī)zui大容量轉(zhuǎn)子一般為6×500ml,其zui高轉(zhuǎn)速一般為10000r/min(約18000g),近年出現(xiàn)6×1000ml、約8000r/min(約16000g)的轉(zhuǎn)子,但其價(jià)格較貴。那些具有相對(duì)離心加速度(RCF)100000g的高速冷凍離心機(jī)(尤其離心機(jī)提供垂直轉(zhuǎn)子的話)可代替超速離心機(jī)的部分使用范圍。當(dāng)然離心時(shí)間相對(duì)超速離心機(jī)長一些。注:四川蜀科儀器有限公司是研發(fā)、制造,銷售醫(yī)用離心機(jī)系列產(chǎn)品的專業(yè)制造廠家。產(chǎn)品現(xiàn)有:高速離心機(jī),低速離心機(jī),大容量離心機(jī),冷凍離心機(jī)等,并可根據(jù)客戶需求訂做特殊用途離心機(jī)。產(chǎn)品廣泛應(yīng)用于農(nóng)業(yè)科學(xué)、生物工程、食品、化工、制藥、臨床醫(yī)學(xué)、血站血庫、檢驗(yàn)檢疫、疾控、環(huán)保等科研和生產(chǎn)單位。

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