干(gan)式(shi)真(zhen)(zhen)空(kong)泵(beng)是無油干(gan)式(shi)機械真(zhen)(zhen)空(kong)泵(beng)的簡稱。干(gan)式(shi)真(zhen)(zhen)空(kong)泵(beng)是一種(zhong)不使用油、水或其他聚合物等流體作為工作介質的真(zhen)(zhen)空(kong)泵(beng)。
使用(yong)干式螺桿真空泵(beng)的注意事項如(ru)下:
1.螺桿真空泵背壓
螺(luo)桿(gan)真(zhen)空泵通常的(de)排氣壓(ya)(ya)力為(wei)大(da)(da)氣壓(ya)(ya)力,在(zai)匹(pi)配(pei)電機功率不(bu)變(bian)的(de)情況下,最(zui)大(da)(da)允許背壓(ya)(ya)為(wei)0.3巴。如果(guo)螺(luo)桿(gan)真(zhen)空泵在(zai)高背壓(ya)(ya)下運行,將會導致諸如較低的(de)抽吸速(su)度(du)、較差(cha)的(de)極限真(zhen)空和較高的(de)排氣溫度(du)等問題。
2.進氣溫度
螺桿真空(kong)泵(beng)的進(jin)氣溫度(du)為(wei)15~60,在此(ci)溫度(du)范(fan)(fan)圍內,泵(beng)可以長(chang)時間(jian)連(lian)續(xu)工(gong)作。進(jin)氣溫度(du)超出(chu)此(ci)范(fan)(fan)圍,因此(ci)應(ying)采取必要的措施。
3.冷卻水溫度
給定的(de)冷卻水溫度(du)(du)為20 流量(liang),冷卻水的(de)最高(gao)允許溫度(du)(du)為32,但冷卻水必(bi)須適當增加流量(liang)。
4.處理(li)液體和固體的能力
干式螺桿真空泵送的氣體可以夾帶一定(ding)量的液體和微小顆粒。
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