“負(fu)壓(ya)(ya)(ya)(ya)(ya)泵(beng)(beng)”、“正(zheng)壓(ya)(ya)(ya)(ya)(ya)泵(beng)(beng)”主(zhu)要是從功能(neng)和主(zhu)要用(yong)(yong)(yong)途(tu)來人為區分(fen)的。“負(fu)壓(ya)(ya)(ya)(ya)(ya)泵(beng)(beng)”主(zhu)要用(yong)(yong)(yong)在對(dui)真(zhen)(zhen)空(kong)(負(fu)壓(ya)(ya)(ya)(ya)(ya))有(you)(you)要求的場合，比(bi)如：抽氣(qi)、氣(qi)體(ti)分(fen)析、氣(qi)體(ti)循(xun)環、氣(qi)體(ti)采樣、真(zhen)(zhen)空(kong)吸(xi)附、間(jian)接(jie)吸(xi)水等(deng)(deng)；而“正(zheng)壓(ya)(ya)(ya)(ya)(ya)泵(beng)(beng)”主(zhu)要用(yong)(yong)(yong)于需(xu)要泵(beng)(beng)作為動力，進體(ti)轉移、對(dui)密閉(bi)容器(qi)增壓(ya)(ya)(ya)(ya)(ya)、充(chong)氣(qi)打氣(qi)、間(jian)接(jie)壓(ya)(ya)(ya)(ya)(ya)水等(deng)(deng)，兩者常(chang)用(yong)(yong)(yong)于、科(ke)研、環保、儀器(qi)、控制(zhi)等(deng)(deng)等(deng)(deng)方面。“負(fu)壓(ya)(ya)(ya)(ya)(ya)泵(beng)(beng)”的排(pai)氣(qi)端也是有(you)(you)正(zheng)壓(ya)(ya)(ya)(ya)(ya)的，只不(bu)過是微(wei)(wei)正(zheng)壓(ya)(ya)(ya)(ya)(ya)，比(bi)“正(zheng)壓(ya)(ya)(ya)(ya)(ya)泵(beng)(beng)”的輸(shu)出壓(ya)(ya)(ya)(ya)(ya)力小得(de)多，比(bi)如微(wei)(wei)型真(zhen)(zhen)空(kong)泵(beng)(beng)VM、VAA、PC等(deng)(deng)系列就是“負(fu)壓(ya)(ya)(ya)(ya)(ya)泵(beng)(beng)”、“吸(xi)氣(qi)泵(beng)(beng)”，水刀切(qie)割配(pei)(pei)件(jian)生產(chan)廠家(jia)，而它們的排(pai)氣(qi)端壓(ya)(ya)(ya)(ya)(ya)力往往只有(you)(you)幾個千帕(KPa)；“正(zheng)壓(ya)(ya)(ya)(ya)(ya)泵(beng)(beng)”的抽氣(qi)端也是有(you)(you)微(wei)(wei)負(fu)壓(ya)(ya)(ya)(ya)(ya)的，泰安水刀切(qie)割配(pei)(pei)件(jian)，才能(neng)完成抽氣(qi)的作用(yong)(yong)(yong)。

由單(dan)向閥控制的(de)(de)高壓(ya)(ya)柱塞不(bu)(bu)(bu)(bu)斷的(de)(de)將液(ye)(ye)體(ti)排出(chu)，增壓(ya)(ya)泵(beng)(beng)(beng)(beng)(beng)的(de)(de)出(chu)口(kou)壓(ya)(ya)力大(da)小與空氣驅動(dong)(dong)(dong)(dong)壓(ya)(ya)力有(you)(you)關。當驅動(dong)(dong)(dong)(dong)部分(fen)(fen)(fen)和輸出(chu)液(ye)(ye)體(ti)部分(fen)(fen)(fen)之間的(de)(de)壓(ya)(ya)力達(da)到(dao)(dao)平(ping)衡時，增壓(ya)(ya)泵(beng)(beng)(beng)(beng)(beng)會(hui)停止(zhi)運(yun)行，不(bu)(bu)(bu)(bu)再消耗空氣。當輸出(chu)壓(ya)(ya)力下降(jiang)或(huo)空氣驅動(dong)(dong)(dong)(dong)壓(ya)(ya)力增加(jia)時，增壓(ya)(ya)泵(beng)(beng)(beng)(beng)(beng)會(hui)自(zi)(zi)動(dong)(dong)(dong)(dong)啟動(dong)(dong)(dong)(dong)運(yun)行，直(zhi)到(dao)(dao)再次達(da)到(dao)(dao)壓(ya)(ya)力平(ping)衡后自(zi)(zi)動(dong)(dong)(dong)(dong)停止(zhi)。采用單(dan)氣控非平(ping)衡氣體(ti)分(fen)(fen)(fen)配(pei)閥來實現泵(beng)(beng)(beng)(beng)(beng)的(de)(de)自(zi)(zi)動(dong)(dong)(dong)(dong)往復運(yun)動(dong)(dong)(dong)(dong)，水刀切割(ge)配(pei)件報價，泵(beng)(beng)(beng)(beng)(beng)體(ti)氣驅部分(fen)(fen)(fen)采用鋁(lv)合金(jin)制造。接液(ye)(ye)部分(fen)(fen)(fen)根據介(jie)質(zhi)不(bu)(bu)(bu)(bu)同選用碳(tan)鋼或(huo)不(bu)(bu)(bu)(bu)銹鋼。一(yi)般泵(beng)(beng)(beng)(beng)(beng)都有(you)(you)進(jin)氣、排氣兩個口(kou)，水刀切割(ge)配(pei)件廠家，在(zai)進(jin)氣口(kou)能產生低(di)于常壓(ya)(ya)（即大(da)氣壓(ya)(ya)）氣壓(ya)(ya)的(de)(de)叫(jiao)(jiao)“負(fu)(fu)壓(ya)(ya)”；在(zai)排氣口(kou)能產生高于常壓(ya)(ya)氣壓(ya)(ya)的(de)(de)叫(jiao)(jiao)“正(zheng)壓(ya)(ya)”；比(bi)如(ru)(ru)常說(shuo)的(de)(de)真(zhen)空泵(beng)(beng)(beng)(beng)(beng)就(jiu)是(shi)負(fu)(fu)壓(ya)(ya)泵(beng)(beng)(beng)(beng)(beng)，增壓(ya)(ya)泵(beng)(beng)(beng)(beng)(beng)就(jiu)是(shi)正(zheng)壓(ya)(ya)泵(beng)(beng)(beng)(beng)(beng)。正(zheng)壓(ya)(ya)泵(beng)(beng)(beng)(beng)(beng)跟負(fu)(fu)壓(ya)(ya)泵(beng)(beng)(beng)(beng)(beng)有(you)(you)很大(da)的(de)(de)不(bu)(bu)(bu)(bu)同。比(bi)如(ru)(ru)氣體(ti)流向，負(fu)(fu)壓(ya)(ya)泵(beng)(beng)(beng)(beng)(beng)是(shi)外部氣體(ti)被(bei)吸入到(dao)(dao)抽氣嘴；正(zheng)壓(ya)(ya)是(shi)從排氣嘴噴(pen)出(chu)去；比(bi)如(ru)(ru)氣壓(ya)(ya)的(de)(de)高低(di)等。

⑶滑(hua)套(tao)被(bei)卡住一表(biao)象為壓力上不(bu)去(qu)但不(bu)燙

如果確信是(shi)單向閥(fa)有(you)問題，而且表象(xiang)為不燙。拆檢時先(xian)注意看一下(xia)陶瓷閥(fa)片(pian)是(shi)否損壞嚴重。

如(ru)果陶瓷閥(fa)片（單(dan)向閥(fa)芯平(ping)面）沒有問(wen)題，則檢查滑套是否被卡住。用手往復推(tui)滑套，看(kan)是否運(yun)動靈 活。

（4）閥墊損壞嚴重

上海(hai)萊斯科機械技術有限公司是(shi)一家生產和(he)銷售水刀配(pei)件的公司，產品種(zhong)類齊全，價格合適，產品質量過硬。 歡迎大家前來咨詢和(he)洽談！