發(fa)布時(shi)間:
2019
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03
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08
來(lai)源:
83
真(zhen)空(kong)系(xi)(xi)(xi)統(tong)(tong)用(yong)何種(zhong)真(zhen)空(kong)泵(beng)(beng)(beng)(beng)(beng)，首先(xian)應(ying)根據系(xi)(xi)(xi)統(tong)(tong)的(de)(de)(de)要求,其(qi)次應(ying)對該(gai)泵(beng)(beng)(beng)(beng)(beng)性(xing)能(neng)特點有(you)詳(xiang)細了(le)解,比較了(le)各種(zhong)泵(beng)(beng)(beng)(beng)(beng)的(de)(de)(de)優缺點后,再決定(ding)之, 這樣(yang)才(cai)能(neng)選用(yong)得(de)適當。為(wei)便于(yu)選擇所要使用(yong)的(de)(de)(de)真(zhen)空(kong)泵(beng)(beng)(beng)(beng)(beng),現將我國生(sheng)產的(de)(de)(de)各種(zhong)類(lei)型(xing)真(zhen)空(kong)泵(beng)(beng)(beng)(beng)(beng)總的(de)(de)(de)情(qing)況(kuang)歸納總結一(yi)(yi)下,簡略比較它(ta)們(men)的(de)(de)(de)特性(xing)和(he)(he)優缺點,看來是(shi)必要的(de)(de)(de)。 一(yi)(yi)、油(you)(you)(you)(you)封機(ji)械泵(beng)(beng)(beng)(beng)(beng) 現生(sheng)產的(de)(de)(de)2X型(xing)旋片(pian)泵(beng)(beng)(beng)(beng)(beng)均(jun)為(wei)雙級,抽(chou)(chou)(chou)速(su)(su)(su)為(wei)0.5~150升(sheng)(sheng)/秒(miao),有(you)全系(xi)(xi)(xi)列的(de)(de)(de)產品(pin)。 滑閥泵(beng)(beng)(beng)(beng)(beng)分單級(H型(xing))、雙級(2H型(xing))。 抽(chou)(chou)(chou)速(su)(su)(su):H型(xing)為(wei)8 ~ 600升(sheng)(sheng)/秒(miao);2H型(xing)為(wei)8~ 70升(sheng)(sheng)/秒(miao)。亦(yi)有(you)成系(xi)(xi)(xi)列生(sheng)產的(de)(de)(de)產品(pin)。 余擺線式泵(beng)(beng)(beng)(beng)(beng)抽(chou)(chou)(chou)速(su)(su)(su)可很(hen)大(da),體(ti)積小(xiao),目前(qian)正在(zai)試生(sheng)產。 這類(lei)泵(beng)(beng)(beng)(beng)(beng)均(jun)用(yong)作獲得(de)低真(zhen)空(kong),或作高真(zhen)空(kong)泵(beng)(beng)(beng)(beng)(beng)的(de)(de)(de)前(qian)級泵(beng)(beng)(beng)(beng)(beng)和(he)(he)預抽(chou)(chou)(chou)泵(beng)(beng)(beng)(beng)(beng)。帶有(you)氣(qi)鎮(zhen)裝置的(de)(de)(de)可抽(chou)(chou)(chou)除潮濕空(kong)i。但極限真(zhen)空(kong)比抽(chou)(chou)(chou)干燥空(kong)氣(qi)(不用(yong)鎮(zhen)時(shi)(shi)(shi))低-個數(shu)量級。泵(beng)(beng)(beng)(beng)(beng)的(de)(de)(de)抽(chou)(chou)(chou)速(su)(su)(su)系(xi)(xi)(xi)指進口(kou)壓(ya)強(qiang)(qiang)在(zai)760托(tuo)時(shi)(shi)(shi)之抽(chou)(chou)(chou)速(su)(su)(su),當系(xi)(xi)(xi)統(tong)(tong)壓(ya)強(qiang)(qiang)下降時(shi)(shi)(shi)抽(chou)(chou)(chou)速(su)(su)(su)亦(yi)下降,直(zhi)至接近該(gai)泵(beng)(beng)(beng)(beng)(beng)的(de)(de)(de)極限真(zhen)空(kong),抽(chou)(chou)(chou)速(su)(su)(su)亦(yi)接近于(yu)零(ling)。其(qi)抽(chou)(chou)(chou)降系(xi)(xi)(xi)數(shu)有(you)一(yi)(yi)定(ding)規(gui)定(ding)。 二、機(ji)械增(zeng)(zeng)壓(ya)泵(beng)(beng)(beng)(beng)(beng)(羅茨泵(beng)(beng)(beng)(beng)(beng)) 工作壓(ya)強(qiang)(qiang)范(fan)(fan)圍(wei)10~5x10-4托(tuo),常(chang)(chang)用(yong)范(fan)(fan)圍(wei)2~5x10-3托(tuo),抽(chou)(chou)(chou)速(su)(su)(su)范(fan)(fan)圍(wei)150~ 2000升(sheng)(sheng)/秒(miao),我國已有(you)成系(xi)(xi)(xi)列產品(pin)。這種(zhong)泵(beng)(beng)(beng)(beng)(beng)最大(da)抽(chou)(chou)(chou)速(su)(su)(su)在(zai)2托(tuo)~10-2托(tuo)之間,需要前(qian)級泵(beng)(beng)(beng)(beng)(beng),不能(neng)直(zhi)接向大(da)氣(qi)排(pai)氣(qi)。極限真(zhen)空(kong)隨前(qian)級泵(beng)(beng)(beng)(beng)(beng)變化。與油(you)(you)(you)(you)增(zeng)(zeng)壓(ya)泵(beng)(beng)(beng)(beng)(beng)相比,工作壓(ya)強(qiang)(qiang)范(fan)(fan)圍(wei)較寬,最大(da)排(pai)氣(qi)壓(ya)強(qiang)(qiang)較高(機(ji)械增(zeng)(zeng)壓(ya)泵(beng)(beng)(beng)(beng)(beng)10~30托(tuo),油(you)(you)(you)(you)增(zeng)(zeng)壓(ya)泵(beng)(beng)(beng)(beng)(beng)1 ~ 2托(tuo)) ,返流油(you)(you)(you)(you)蒸(zheng)氣(qi)很(hen)少,用(yong)它(ta)抽(chou)(chou)(chou)除含有(you)水蒸(zheng)等可凝性(xing)氣(qi)體(ti)時(shi)(shi)(shi)較合(he)適。 三、油(you)(you)(you)(you)增(zeng)(zeng)壓(ya)泵(beng)(beng)(beng)(beng)(beng) 工作壓(ya)強(qiang)(qiang)范(fan)(fan)圍(wei)1 ~1x10-4托(tuo),常(chang)(chang)用(yong)范(fan)(fan)圍(wei)在(zai)0.1~ 1x10-2托(tuo),抽(chou)(chou)(chou)速(su)(su)(su)范(fan)(fan)圍(wei)200~40000升(sheng)(sheng)/秒(miao),彌補了(le)機(ji)械泵(beng)(beng)(beng)(beng)(beng)、擴散泵(beng)(beng)(beng)(beng)(beng)在(zai)此壓(ya)強(qiang)(qiang)范(fan)(fan)圍(wei)內抽(chou)(chou)(chou)速(su)(su)(su)小(xiao)的(de)(de)(de)缺陷。對惰(duo)性(xing)氣(qi)體(ti)與其(qi)他氣(qi)體(ti)有(you)相同的(de)(de)(de)抽(chou)(chou)(chou)速(su)(su)(su)。 四、油(you)(you)(you)(you)擴散泵(beng)(beng)(beng)(beng)(beng) 普(pu)通(tong)油(you)(you)(you)(you)擴散泵(beng)(beng)(beng)(beng)(beng)的(de)(de)(de)工作壓(ya)強(qiang)(qiang)范(fan)(fan)圍(wei)10-2~5x10-7托(tuo),常(chang)(chang)用(yong)范(fan)(fan)圍(wei)10-8~ 5x10-...