? 機械真空泵全拆修叫做大修,對采取了局部拆修措施而未能排除故障的一些真空泵,其真(zhen)空度仍(reng)低、仍(reng)有(you)滲漏等(deng)現象;或者(zhe)(zhe)有(you)些泵(beng)有(you)下述現象之一者(zhe)(zhe):如泵(beng)發生“卡死”現象,油(you)很(hen)臟而且泵(beng)內(nei)已結了(le)(le)(le)垢(gou),生了(le)(le)(le)銹或用了(le)(le)(le)不(bu)適當(dang)的(de)油(you)使(shi)機械(xie)真(zhen)空泵(beng)內(nei)部零部件上結了(le)(le)(le)硬殼(硅(gui)油(you)進入(ru)機械(xie)真(zhen)空泵(beng)內(nei),就(jiu)可(ke)能產(chan)生這種情形),旋(xuan)片有(you)較(jiao)大的(de)撞(zhuang)擊(ji)聲,泵(beng)腔內(nei)落入(ru)異(yi)物(金屬屑(xie)、玻璃屑(xie)、銅屑(xie)等(deng))劃傷泵(beng)腔,摩擦發熱溫升很(hen)厲害(超過(guo)70℃)等(deng),均需將機械(xie)真(zhen)空泵(beng)全拆開進行清洗修理。
拆(chai)卸機(ji)械真(zhen)空泵的(de)步驟及注意事項如下:
1、切斷電源(yuan),拔下電源(yuan)插(cha)頭。該泵如在系(xi)統(tong)上,應當從設備上取下。
2、擰開放油(you)(you)螺栓放油(you)(you),用手盤(pan)(pan)動皮(pi)帶輪(lun),使泵腔內余油(you)(you)全部放出。油(you)(you)應收集好,一般是在機械真空(kong)泵底板下放一鐵制油(you)(you)盤(pan)(pan)或磁(ci)盤(pan)(pan)等(通稱方(fang)盤(pan)(pan))收集,以便于今后(hou)蒸餾回(hui)收和免于污(wu)染環境(jing)。
3、拆(chai)下皮(pi)帶(dai),卸(xie)下皮(pi)帶(dai)輪(lun)、鍵,脫開底板(ban),視電(dian)機好(hao)壞程度(如發熱、過臟、有(you)干磨的(de)噪音(yin),振動較大等)應予修理(li)或送電(dian)工(gong)洗油修理(li)。
4、先拆(chai)低真空端(duan)(duan)(duan)蓋(gai)(gai)板(ban)(ban)(后(hou)(hou)(hou)端(duan)(duan)(duan)蓋(gai)(gai)板(ban)(ban),即遠離(li)泵(beng)輪的一端(duan)(duan)(duan)),拆(chai)卸(xie)時根據不(bu)同(tong)螺釘(ding)(ding)使(shi)用(yong)(yong)(yong)不(bu)同(tong)的工(gong)具。對于(yu)一般六角(jiao)(jiao)螺釘(ding)(ding)可用(yong)(yong)(yong)呆扳手,內六角(jiao)(jiao)螺釘(ding)(ding)要(yao)用(yong)(yong)(yong)內六角(jiao)(jiao)扳手,必(bi)要(yao)時要(yao)使(shi)用(yong)(yong)(yong)套筒扳手,這(zhe)樣不(bu)會(hui)損壞螺釘(ding)(ding)。擰開(kai)端(duan)(duan)(duan)蓋(gai)(gai)板(ban)(ban)螺釘(ding)(ding)后(hou)(hou)(hou),輕啟(qi)端(duan)(duan)(duan)蓋(gai)(gai)板(ban)(ban)。端(duan)(duan)(duan)蓋(gai)(gai)板(ban)(ban)如(ru)密(mi)合(he)得很緊,則應慢慢設法起(qi)開(kai)。例(li)如(ru),可用(yong)(yong)(yong)銼刀在泵(beng)腔與端(duan)(duan)(duan)蓋(gai)(gai)板(ban)(ban)合(he)縫處銼一小槽(cao),然后(hou)(hou)(hou)用(yong)(yong)(yong)起(qi)子(zi)(改(gai)錐)插于(yu)小槽(cao)處用(yong)(yong)(yong)手敲起(qi)子(zi)把手,亦(yi)可用(yong)(yong)(yong)小錘(chui)輕敲起(qi)子(zi)以退出端(duan)(duan)(duan)蓋(gai)(gai)板(ban)(ban),切不(bu)可重錘(chui)敲打。
5、用橡皮(pi)(pi)墊(dian)圈(quan)密(mi)封的則取(qu)下橡皮(pi)(pi)墊(dian)圈(quan),退出(chu)定位銷。
6、取出(chu)轉子及旋(xuan)片(pian)(pian)。通常在低轉子端而設有(you)兩個攻(gong)了絲的孑匕(bi)用絲桿擰入此孑匕(bi)便很容(rong)(rong)易地拉出(chu)低轉子了。但(dan)要注意拉出(chu)轉子時一定要用手捏緊(jin)旋(xuan)片(pian)(pian),因旋(xuan)片(pian)(pian)受(shou)彈簧力(li)較(jiao)大,一不(bu)小自容(rong)(rong)易脫手飛出(chu),掉(diao)于地上或(huo)碰(peng)到(dao)硬物,碰(peng)壞旋(xuan)片(pian)(pian)棱角及表(biao)面造(zao)成(cheng)無端報賡
7、依(yi)4、5、6相仿的方法拆(chai)卸高(gao)真空端,拿出高(gao)轉(zhuan)子(zi)和旋片。此(ci)時(shi),只(zhi)需用手捏緊旋片和軸即可取出轉(zhuan)子(zi)。
8、動手拆泵(beng)以前,應事先了解(jie)清楚待拆修泵(beng)的(de)結構(gou)特點(dian)、各零部件大致屬(shu)哪種結構(gou)型式。例如,對(dui)(dui)那些(xie)本身屬(shu)于組(zu)合(he)件的(de)部件,如某些(xie)旋片(pian)泵(beng)的(de)轉(zhuan)子等,則不要(yao)拆卸(xie),可對(dui)(dui)其(qi)表(biao)面(mian)作適當的(de)修正調整;如果組(zu)合(he)轉(zhuan)子內落入玻璃屑、金屬(shu)異物傷了腔(qiang)體或(huo)本身旋片(pian)槽(cao)已磨損過多,需(xu)修換配件時,則可拆卸(xie),但要(yao)小(xiao)心記(ji)住其(qi)裝配方法(fa)。
9、每拆(chai)下(xia)一(yi)個部(bu)件(jian),都要檢查其(qi)精度(du)(du)和光(guang)潔(jie)度(du)(du)以(yi)及損(sun)壞情況。旋片及轉子兩(liang)頭(tou)的(de)棱角要特別注意檢查其(qi)有否損(sun)壞,并作好(hao)記錄(lu)。對于(yu)業務尚(shang)不太熟悉(xi)的(de)修(xiu)(xiu)泵(beng)(beng)(beng)(beng)者,則(ze)更(geng)應逐(zhu)步記住各部(bu)件(jian)、零件(jian)的(de)原裝配位(wei)置(zhi),作好(hao)記錄(lu),以(yi)防重裝時記不清(qing)(qing)搞(gao)錯。同(tong)時,拆(chai)下(xia)的(de)零部(bu)件(jian)不可亂(luan)放,堆徹(che),碰傷,丟失(shi)。將(jiang)其(qi)放于(yu)一(yi)個方磁(ci)盤里最好(hao),也可放于(yu)木盒(he)中(zhong)并清(qing)(qing)洗干凈,以(yi)綢布蓋機(ji)械真(zhen)空(kong)(kong)(kong)泵(beng)(beng)(beng)(beng)全拆(chai)修(xiu)(xiu)叫做大(da)修(xiu)(xiu),對采取了(le)(le)(le)局部(bu)拆(chai)修(xiu)(xiu)措施(shi)而未能(neng)排除故障的(de)一(yi)些真(zhen)空(kong)(kong)(kong)泵(beng)(beng)(beng)(beng),其(qi)真(zhen)空(kong)(kong)(kong)度(du)(du)仍低(di)、仍有滲漏等現(xian)象(xiang);或者有些泵(beng)(beng)(beng)(beng)有下(xia)述現(xian)象(xiang)之一(yi)者:如泵(beng)(beng)(beng)(beng)發生(sheng)“卡死(si)”現(xian)象(xiang),油很(hen)臟(zang)而且泵(beng)(beng)(beng)(beng)內已結了(le)(le)(le)垢,生(sheng)了(le)(le)(le)銹或用了(le)(le)(le)不適當(dang)的(de)油使機(ji)械真(zhen)空(kong)(kong)(kong)泵(beng)(beng)(beng)(beng)內部(bu)零部(bu)件(jian)上(shang)結了(le)(le)(le)硬殼(硅油進入機(ji)械真(zhen)空(kong)(kong)(kong)泵(beng)(beng)(beng)(beng)內,就(jiu)可能(neng)產生(sheng)這(zhe)種情形),旋片有較大(da)的(de)撞擊聲,泵(beng)(beng)(beng)(beng)腔內落(luo)入異(yi)物(金(jin)屬屑(xie)、玻璃(li)屑(xie)、銅屑(xie)等)劃(hua)傷泵(beng)(beng)(beng)(beng)腔,摩擦(ca)發熱(re)溫升很(hen)厲害(超過70℃)等,均需將(jiang)機(ji)械真(zhen)空(kong)(kong)(kong)泵(beng)(beng)(beng)(beng)全拆(chai)開(kai)進行清(qing)(qing)洗修(xiu)(xiu)理。