說(shuo)說萊(lai)寶(bao)真空(kong)泵選擇(ze)真(zhen)空(kong)系統(tong)時(shi)，妳必(bi)須要考(kao)慮(lv)的幾(ji)點

安(an)裝在(zai)萊寶(bao)真空(kong)泵體中的偏(pian)心轉(zhuan)子)有(you)三塊(kuai)葉(ye)片(pian)，它(ta)們(men)把(ba)泵分成(cheng)三個隔室，每(mei)個隔室的容(rong)積隨(sui)轉(zhuan)子的旋(xuan)轉(zhuan)周期(qi)性的變(bian)化。  

萊寶(bao)真空(kong)泵是(shi)壹種(zhong)粗(cu)真空(kong)泵，它所(suo)能獲得的極(ji)限真空(kong)為2000~4000Pa，串聯(lian)大(da)氣噴(pen)射器可達(da)270~670Pa。水(shui)環(huan)泵也可用作(zuo)壓(ya)縮(suo)機(ji)，稱為水(shui)環(huan)式(shi)壓(ya)縮(suo)機(ji)，是(shi)屬(shu)於低壓(ya)的壓(ya)縮(suo)機(ji)，其壓力(li)範圍為1~2×105Pa表(biao)壓(ya)力(li)。  

萊寶(bao)真空(kong)泵是(shi)靠泵腔(qiang)容積(ji)的變(bian)化來(lai)實現吸氣、壓縮(suo)和(he)排氣(qi)的，因(yin)此(ci)它(ta)屬(shu)於變(bian)容(rong)式(shi)真(zhen)空(kong)泵。  

為達(da)到不(bu)同(tong)產(chan)品的工(gong)藝(yi)指標、工(gong)作(zuo)效率和(he)設(she)備(bei)工(gong)作(zuo)壽(shou)命(ming)要求、不同(tong)的真(zhen)空(kong)區段(duan)需要(yao)選擇(ze)不(bu)同的真(zhen)空(kong)系統(tong)配(pei)置(zhi)。為(wei)達到*配(pei)置(zhi)，選擇(ze)真(zhen)空(kong)系統(tong)時(shi)，應(ying)考(kao)慮(lv)下(xia)述各(ge)點(dian)：  

1、確定(ding)工(gong)作(zuo)真(zhen)空(kong)範圍先(xian)必(bi)須檢查(zha)確(que)定(ding)每(mei)壹種(zhong)工(gong)藝(yi)要求的真(zhen)空(kong)度。因(yin)為(wei)每(mei)壹種(zhong)工(gong)藝(yi)都(dou)有(you)其(qi)適(shi)應(ying)的真(zhen)空(kong)度範(fan)圍，必(bi)須認真(zhen)研究確定(ding)之。  

2、確定(ding)極(ji)限真空(kong)度在(zai)確定(ding)了(le)工(gong)藝(yi)要求的真(zhen)空(kong)度的基(ji)礎(chu)上(shang)檢(jian)查真(zhen)空(kong)泵系統(tong)的極(ji)限真空(kong)度，因(yin)為(wei)系統(tong)的極(ji)限真空(kong)度決(jue)定(ding)了(le)系(xi)統(tong)的*工(gong)作(zuo)真(zhen)空(kong)度。壹般(ban)來(lai)講，系(xi)統(tong)的極(ji)限真空(kong)度比(bi)系統(tong)的工(gong)作(zuo)真(zhen)空(kong)度低(di)20%，比前級(ji)泵的極(ji)限真空(kong)度低(di)50%。  

3、主真(zhen)空(kong)泵的選擇(ze)計(ji)算(suan)s=2.303v/tlog（p1/p2）其(qi)中：s為真空(kong)泵抽氣(qi)速率、v為(wei)真(zhen)空(kong)室容(rong)積、t為(wei)達到要求(qiu)真(zhen)空(kong)度所(suo)需時(shi)間、p1為初(chu)始真空(kong)度、p2為(wei)要求(qiu)真空(kong)度。  

4、真(zhen)空(kong)容積(ji)檢查(zha)確定(ding)達(da)到(dao)要求(qiu)的真(zhen)空(kong)度所(suo)需要(yao)的時(shi)間、真空(kong)管道的流(liu)阻與泄(xie)漏(lou)。考(kao)慮(lv)達(da)到要(yao)求(qiu)真(zhen)空(kong)度後(hou)在壹定(ding)工(gong)藝(yi)要求條(tiao)件下維(wei)持真(zhen)空(kong)需要(yao)的抽(chou)氣速(su)率。  

5、被(bei)抽(chou)氣體種(zhong)類與抽氣量(liang)檢(jian)查確定(ding)工(gong)藝(yi)要求的抽(chou)氣種(zhong)類與抽氣量(liang)。因(yin)為(wei)如果被抽(chou)氣(qi)體(ti)種(zhong)類與真空(kong)泵內液(ye)體發生(sheng)反(fan)應(ying)，泵系統(tong)將(jiang)被(bei)汙(wu)染。同時(shi)必(bi)須考(kao)慮(lv)確(que)定(ding)合(he)適(shi)的排氣(qi)時(shi)間與抽氣過(guo)程(cheng)中產(chan)生(sheng)的氣(qi)體量(liang)。  
 

萊寶(bao)真空(kong)泵早期(qi)用作(zuo)自(zi)吸(xi)水泵，而後(hou)逐漸(jian)用於石油(you)、化工(gong)、機(ji)械、礦(kuang)山(shan)、輕(qing)工(gong)、醫藥及(ji)食(shi)品等(deng)許(xu)多工(gong)業部門(men)。在工(gong)業生(sheng)產(chan)的許(xu)多工(gong)藝(yi)過(guo)程(cheng)中，如真空(kong)過(guo)濾、真空(kong)引(yin)水(shui)、真(zhen)空(kong)送(song)料(liao)、真(zhen)空(kong)蒸發、真空(kong)濃縮(suo)、真(zhen)空(kong)回潮(chao)和(he)真(zhen)空(kong)脫氣(qi)等(deng)，水(shui)環泵得到(dao)廣泛的應(ying)用(yong)。