泵(beng)是(shi)液(ye)相(xiang)色(se)譜(pu)的(de)核(he)心(xin),泵(beng)將(jiang)流(liu)動(dong)相(xiang)從(cong)溶(rong)劑(ji)瓶(ping)輸(shu)送(song)到(dao)液(ye)相(xiang)流(liu)路(lu)係(xi)統(tong)中(zhong),並(bing)要(yao)在(zai)高(gao)壓(ya)下(xia)保(bao)持(chi)流(liu)量(liang)和(he)壓(ya)力(li)的(de)穩(wen)定(ding)。泵(beng)的(de)狀(zhuang)態(tai)正(zheng)常(chang)是(shi)液(ye)相(xiang)色(se)譜(pu)準(zhun)確(que)分(fen)析(xi)的(de)基(ji)礎(chu),所(suo)以(yi)平(ping)日(ri)一(yi)定(ding)要(yao)重(zhong)視(shi)對(dui)泵(beng)的(de)維(wei)護(hu)。下(xia)麵(mian)就(jiu)安(an)捷(jie)倫(lun)1100/1200液相色譜泵的日常維護進行簡要的介紹。
1. 流動相的準備為了防止顆粒性物質對泵組件的磨損,流動相(特別是水相)應該新鮮配置並且過濾。上機前對流動相進行適當的超聲脫氣,以保證更好的在線脫氣和在線混合的效果。
2.比例閥溶劑通道的分配四元泵的比例閥有A、B、C、D四個通道,建議將鹽溶液接在下麵的通道(A或D),將有機溶劑接在上麵的通道(B 或C)上,也就是有機通道最好在鹽溶液通道的上麵。且建議用水定期衝洗所有比例閥通道除去可能在閥口析出的鹽結晶。
3.guolvbaitoudeweihuguolvbaitouweiyupaiqifanei,shiyizhongjusifuyixicaizhideweikongguolvxin,yongyuguolvliudongxiangzhongdeweili,shijingchangxuyaoweihudedifang。dangxitongyaliyouyichangzenggaoshi,shouxianxuyaojianzhaguolvbaitoushifouzusaile。panduandefangfashi:打開排氣閥,以純水作流動相,將流速設為5mL/min,如果泵壓超過10bar,則說明過濾白頭需要更換了。對過濾白頭的預防性維護通常可以是1~2個月更換1次,更換時同時檢查一下過濾白頭前麵的密封金墊,如果發現變形,也應及時更換。 ruguoguolvbaitougenghuanguoyupinfan,zexuyaorenzhenjianzhayixialiudongxiangdepinzhi,quebaoliudongxiangshangjiqianguolv,quebaoshiyongleheshideguolvmo。ruguoliudongxiangyouchangjunxianxiang,chulepeizhixinderongji,haiyingduixiangyingderongjiguanxianhetuoqijitongdaojinxingchedideqingxi。
4.柱(zhu)塞(sai)杆(gan)與(yu)柱(zhu)塞(sai)密(mi)封(feng)圈(quan)的(de)維(wei)護(hu)柱(zhu)塞(sai)密(mi)封(feng)圈(quan)套(tao)在(zai)柱(zhu)塞(sai)杆(gan)上(shang)用(yong)於(yu)隔(ge)離(li)泵(beng)與(yu)外(wai)界(jie),工(gong)作(zuo)時(shi),它(ta)和(he)柱(zhu)塞(sai)杆(gan)進(jin)行(xing)頻(pin)繁(fan)的(de)往(wang)複(fu)摩(mo)擦(ca),使(shi)用(yong)一(yi)段(duan)時(shi)間(jian)後(hou),會(hui)有(you)一(yi)定(ding)的(de)磨(mo)損(sun),因(yin)而(er)密(mi)封(feng)圈(quan)需(xu)要(yao)定(ding)期(qi)更(geng)換(huan)以(yi)保(bao)證(zheng)係(xi)統(tong)的(de)密(mi)封(feng)性(xing)。更(geng)換(huan)活(huo)塞(sai)密(mi)封(feng)墊(dian)時(shi)檢(jian)查(zha)活(huo)塞(sai)杆(gan)上(shang)是(shi)否(fou)有(you)劃(hua)痕(hen)。有(you)劃(hua)痕(hen)的(de)活(huo)塞(sai)將(jiang)導(dao)致(zhi)輕(qing)度(du)滲(shen)漏(lou),並(bing)降(jiang)低(di)密(mi)封(feng)墊(dian)的(de)使(shi)用(yong)壽(shou)命(ming)。應(ying)盡(jin)早(zao)更(geng)換(huan)有(you)劃(hua)痕(hen)的(de)活(huo)塞(sai)。柱(zhu)塞(sai)密(mi)封(feng)圈(quan)有(you)反(fan)相(xiang)和(he)正(zheng)相(xiang)之(zhi)分(fen),反(fan)相(xiang)密(mi)封(feng)圈(quan)為(wei)黑(hei)色(se),石(shi)墨(mo)Teflon材質;正相呈橘黃色,聚乙烯材質,更適用於正相溶劑。1100/1200標(biao)配(pei)的(de)是(shi)反(fan)相(xiang)密(mi)封(feng)圈(quan),正(zheng)相(xiang)應(ying)用(yong)時(shi),需(xu)要(yao)更(geng)換(huan)為(wei)正(zheng)相(xiang)密(mi)封(feng)圈(quan)。鹽(yan)溶(rong)液(ye)對(dui)柱(zhu)塞(sai)密(mi)封(feng)圈(quan)的(de)壽(shou)命(ming)有(you)著(zhe)很(hen)大(da)的(de)影(ying)響(xiang),使(shi)用(yong)有(you)鹽(yan)溶(rong)液(ye)作(zuo)為(wei)流(liu)動(dong)相(xiang)的(de)體(ti)係(xi)時(shi),要(yao)注(zhu)意(yi)鹽(yan)溶(rong)液(ye)通(tong)道(dao)的(de)清(qing)洗(xi),千(qian)萬(wan)不(bu)能(neng)讓(rang)鹽(yan)溶(rong)液(ye)在(zai)係(xi)統(tong)中(zhong)過(guo)夜(ye),常(chang)常(chang)一(yi)個(ge)晚(wan)上(shang)析(xi)出(chu)的(de)鹽(yan)粒(li)就(jiu)會(hui)造(zao)成(cheng)係(xi)統(tong)堵(du)塞(sai),對(dui)泵(beng)產(chan)生(sheng)較(jiao)大(da)的(de)損(sun)害(hai)。為(wei)了(le)延(yan)長(chang)密(mi)封(feng)圈(quan)和(he)柱(zhu)塞(sai)杆(gan)的(de)壽(shou)命(ming),在(zai)經(jing)常(chang)使(shi)用(yong)較(jiao)高(gao)濃(nong)度(du)的(de)緩(huan)衝(chong)鹽(yan)溶(rong)液(ye)的(de)情(qing)況(kuang)下(xia),建(jian)議(yi)安(an)裝(zhuang)柱(zhu)塞(sai)清(qing)洗(xi)附(fu)件(jian)。柱(zhu)塞(sai)清(qing)洗(xi)的(de)原(yuan)理(li)在(zai)於(yu):柱zhu塞sai泵beng在zai工gong作zuo時shi,雖sui然ran有you密mi封feng圈quan密mi封feng,但dan由you於yu毛mao細xi作zuo用yong,還hai是shi會hui有you一yi些xie流liu動dong相xiang滲shen入ru到dao密mi封feng圈quan與yu柱zhu塞sai杆gan之zhi間jian。如ru果guo流liu動dong相xiang中zhong有you緩huan衝chong鹽yan,當dang柱zhu塞sai杆gan壁bi上shang的de溶rong劑ji揮hui發fa掉diao後hou,極ji細xi小xiao的de鹽yan粒li留liu了le下xia來lai。這zhe樣yang的de鹽yan粒li就jiu象xiang砂sha紙zhi一yi樣yang磨mo損sun著zhe柱zhu塞sai杆gan和he柱zhu塞sai密mi封feng圈quan,會hui大da大da降jiang低di柱zhu塞sai杆gan和he密mi封feng圈quan的de壽shou命ming。柱zhu塞sai清qing洗xi附fu件jian是shi在zai柱zhu塞sai杆gan的de中zhong間jian加jia入ru了le一yi個ge可ke以yi有you水shui流liu過guo的de腔qiang體ti,通tong過guo水shui不bu斷duan的de流liu動dong,就jiu可ke以yi帶dai走zou滲shen進jin來lai的de鹽yan溶rong液ye,防fang止zhi了le鹽yan粒li的de析xi出chu,保bao護hu了le柱zhu塞sai杆gan和he柱zhu塞sai密mi封feng圈quan。通tong常chang我wo們men往wang柱zhu塞sai清qing洗xi的de水shui裏li加jia入ru10%deyibingchun,keyijianxiaoshuidezhangli,bianyuqingxiyeliudong,bingqieyizhichangjun。danyouyidianyaozhuyideshi,zhuangyouzhusaiqingxifujiandebengtou,qingxiyeliuliangkeyihenxiao(如沒分鍾幾滴),但一定不要讓清洗通道裏幹涸,如果水流光了,應該盡快換上新的溶液。否則會減少柱塞杆和密封圈的壽命。
5.主zhu動dong閥fa的de維wei護hu主zhu動dong閥fa是shi流liu動dong相xiang進jin入ru泵beng體ti的de門men戶hu。如ru果guo我wo們men發fa現xian流liu量liang為wei零ling,流liu量liang不bu穩wen,或huo泵beng壓ya波bo動dong特te別bie大da,常chang常chang都dou是shi因yin為wei主zhu動dong閥fa漏lou或huo是shi堵du了le。主zhu動dong閥fa裏li麵mian裝zhuang有you一yi個ge小xiao的de單dan向xiang閥fa芯xin,我wo們men將jiang其qi取qu下xia,在zai異yi丙bing醇chun內nei超chao聲sheng清qing洗xi一yi下xia,一yi般ban能neng解jie決jue這zhe樣yang的de問wen題ti。如ru果guo超chao聲sheng不bu能neng解jie決jue問wen題ti的de話hua,可ke以yi更geng換huan該gai閥fa芯xin。對dui於yu經jing常chang使shi用yong緩huan衝chong鹽yan體ti係xi的de用yong戶hu,手shou頭tou常chang備bei一yi個ge這zhe樣yang的de閥fa芯xin是shi非fei常chang有you用yong的de,往wang往wang可ke以yi及ji時shi解jie決jue問wen題ti,大da大da的de降jiang低di停ting機ji帶dai來lai的de損sun失shi。
6.chukoufadeweihuchukoufaneibuyeyou,ruguoyouyanlihuoqitazazhishenruqizhong,yehuizaochengchukoufadeduhuolou,changchangbiaoxianweiyalideyichangbodong。tongchangwomenkeyiyongyibingchunhuo60度左右的熱水衝洗係統,如果無效,在異丙醇中超聲清洗它常常會解決這樣的問題。
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