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2020
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01
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06
為(wei)了使(shi)最(zui)終組(zu)裝(zhuang)成功(gong),在(zai)(zai)對制(zhi)(zhi)冷(leng)(leng)系(xi)(xi)統(tong)進行氣密(mi)性(xing)測(ce)試和泄漏檢測(ce)之(zhi)后,必(bi)須執(zhi)行完全真(zhen)(zhen)空(kong)(抽(chou)真(zhen)(zhen)空(kong))。維修(xiu)(xiu)空(kong)調和制(zhi)(zhi)冷(leng)(leng)設(she)(she)備(bei)(bei)時,維修(xiu)(xiu)人(ren)員經常使(shi)用(yong)(yong)GVD8|GVD12旋(xuan)(xuan)(xuan)片式真(zhen)(zhen)空(kong)泵(beng)(beng)(beng)抽(chou)空(kong)系(xi)(xi)統(tong)。真(zhen)(zhen)空(kong)度應(ying)為(wei)-0.1MPa,持(chi)續24小(xiao)時,并且真(zhen)(zhen)空(kong)度可以增(zeng)加而不會(hui)顯著增(zeng)加。抽(chou)空(kong)是(shi)使(shi)用(yong)(yong)真(zhen)(zhen)空(kong)泵(beng)(beng)(beng)或壓(ya)縮(suo)(suo)(suo)機抽(chou)空(kong)制(zhi)(zhi)冷(leng)(leng)劑循環系(xi)(xi)統(tong),以便排出(chu)系(xi)(xi)統(tong)中的(de)(de)(de)空(kong)氣和殘留(liu)水分。本文將介紹制(zhi)(zhi)冷(leng)(leng)設(she)(she)備(bei)(bei)中的(de)(de)(de)GVD8|GVD12旋(xuan)(xuan)(xuan)片式真(zhen)(zhen)空(kong)泵(beng)(beng)(beng)的(de)(de)(de)結構(gou)和常見(jian)故(gu)障(zhang)。 制(zhi)(zhi)冷(leng)(leng)設(she)(she)備(bei)(bei)是(shi)指主要用(yong)(yong)于在(zai)(zai)夏天(tian)制(zhi)(zhi)冷(leng)(leng)機組(zu)人(ren)員的(de)(de)(de)食物,制(zhi)(zhi)冷(leng)(leng)各種貨物和機艙空(kong)調的(de)(de)(de)設(she)(she)備(bei)(bei)。它(ta)主要由(you)壓(ya)縮(suo)(suo)(suo)機,膨脹閥,蒸發(fa)器,冷(leng)(leng)凝器及其(qi)配件(jian)和管道組(zu)成。按(an)照工作(zuo)原理,可分為(wei)壓(ya)縮(suo)(suo)(suo)式制(zhi)(zhi)冷(leng)(leng)設(she)(she)備(bei)(bei),吸收式制(zhi)(zhi)冷(leng)(leng)設(she)(she)備(bei)(bei),蒸汽噴射式制(zhi)(zhi)冷(leng)(leng)設(she)(she)備(bei)(bei),熱泵(beng)(beng)(beng)式制(zhi)(zhi)冷(leng)(leng)設(she)(she)備(bei)(bei)和電加熱式制(zhi)(zhi)冷(leng)(leng)設(she)(she)備(bei)(bei)。 制(zhi)(zhi)冷(leng)(leng)設(she)(she)備(bei)(bei)中GVD8|GVD12旋(xuan)(xuan)(xuan)片式真(zhen)(zhen)空(kong)泵(beng)(beng)(beng)的(de)(de)(de)結構(gou)和工作(zuo)原理 常用(yong)(yong)的(de)(de)(de)真(zhen)(zhen)空(kong)泵(beng)(beng)(beng)是(shi)旋(xuan)(xuan)(xuan)片真(zhen)(zhen)空(kong)泵(beng)(beng)(beng),它(ta)是(shi)一種用(yong)(yong)泵(beng)(beng)(beng)油密(mi)封的(de)(de)(de)機械泵(beng)(beng)(beng)。 旋(xuan)(xuan)(xuan)片泵(beng)(beng)(beng)主要由(you)泵(beng)(beng)(beng)體,轉(zhuan)(zhuan)(zhuan)(zhuan)子,旋(xuan)(xuan)(xuan)片,端蓋,彈簧(huang)等組(zu)成。轉(zhuan)(zhuan)(zhuan)(zhuan)子偏(pian)心地(di)安(an)裝(zhuang)在(zai)(zai)旋(xuan)(xuan)(xuan)片泵(beng)(beng)(beng)的(de)(de)(de)腔體中,并且轉(zhuan)(zhuan)(zhuan)(zhuan)子外(wai)圓和泵(beng)(beng)(beng)腔內(nei)的(de)(de)(de)表(biao)(biao)面相(xiang)(xiang)切(它(ta)們之(zhi)間的(de)(de)(de)間隙很小(xiao))。在(zai)(zai)轉(zhuan)(zhuan)(zhuan)(zhuan)子槽中安(an)裝(zhuang)了兩個帶彈簧(huang)的(de)(de)(de)轉(zhuan)(zhuan)(zhuan)(zhuan)子。在(zai)(zai)旋(xuan)(xuan)(xuan)轉(zhuan)(zhuan)(zhuan)(zhuan)過程中,旋(xuan)(xuan)(xuan)片的(de)(de)(de)頂部通(tong)過離心力和彈簧(huang)張力保持(chi)與(yu)泵(beng)(beng)(beng)腔的(de)(de)(de)內(nei)壁(bi)接(jie)(jie)觸。轉(zhuan)(zhuan)(zhuan)(zhuan)子旋(xuan)(xuan)(xuan)轉(zhuan)(zhuan)(zhuan)(zhuan)以驅動旋(xuan)(xuan)(xuan)片沿泵(beng)(beng)(beng)腔內(nei)壁(bi)滑動。 轉(zhuan)(zhuan)(zhuan)(zhuan)子外(wai)圓的(de)(de)(de)表(biao)(biao)面與(yu)泵(beng)(beng)(beng)腔內(nei)相(xiang)(xiang)切,旋(xuan)(xuan)(xuan)轉(zhuan)(zhuan)(zhuan)(zhuan)刀片安(an)裝(zhuang)在(zai)(zai)轉(zhuan)(zhuan)(zhuan)(zhuan)子鎬中。在(zai)(zai)彈簧(huang)的(de)(de)(de)作(zuo)用(yong)(yong)下(xia),它(ta)始終與(yu)定子腔壁(bi)緊(jin)密(mi)接(jie)(jie)觸。當偏(pian)心轉(zhuan)(zhuan)(zhuan)(zhuan)子在(zai)(zai)電動機的(de)(de)(de)牽引下(xia)旋(xuan)(xuan)(xuan)轉(zhuan)(zhuan)(zhuan)(zhuan)時,轉(zhuan)(zhuan)(zhuan)(zhuan)子也隨之(zhi)旋(xuan)(xuan)(xuan)轉(zhuan)(zhuan)(zhuan)(zhuan)。順(shun)時針旋(xuan)(xuan)(xuan)轉(zhuan)(zhuan)(zhuan)(zhuan)時,吸氣口(kou)會(hui)持(chi)...
2020
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01
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氣(qi)(qi)(qi)(qi)(qi)蝕(shi)現象是由液(ye)體汽(qi)化引起的(de)(de)。液(ye)體分子逃逸成(cheng)氣(qi)(qi)(qi)(qi)(qi)體分子,這被稱為“汽(qi)化”。水(shui)(shui)環(huan)(huan)真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)泵(beng)(beng)(beng)(beng)(beng)發(fa)生(sheng)氣(qi)(qi)(qi)(qi)(qi)蝕(shi)后,不(bu)僅(jin)會(hui)破壞過流部件,還(huan)會(hui)產生(sheng)噪聲和(he)振動,導致(zhi)泵(beng)(beng)(beng)(beng)(beng)的(de)(de)性能下降。在(zai)嚴重(zhong)的(de)(de)情況下,它(ta)會(hui)停止(zhi)泵(beng)(beng)(beng)(beng)(beng)中的(de)(de)液(ye)體,使(shi)其無法正(zheng)常工(gong)作(zuo)。2bv水(shui)(shui)環(huan)(huan)真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)泵(beng)(beng)(beng)(beng)(beng)在(zai)空(kong)(kong)(kong)化狀態下短(duan)時間運(yun)行,這將(jiang)導致(zhi)泵(beng)(beng)(beng)(beng)(beng)的(de)(de)噪聲和(he)振動變(bian)大(da),甚(shen)至對(dui)泵(beng)(beng)(beng)(beng)(beng)造成(cheng)損壞。那么如何防止(zhi)水(shui)(shui)環(huan)(huan)真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)泵(beng)(beng)(beng)(beng)(beng)產生(sheng)氣(qi)(qi)(qi)(qi)(qi)蝕(shi)呢?今天(tian)小編為大(da)家(jia)總(zong)結(jie)了以下幾點,僅(jin)供參考! 提(ti)高水(shui)(shui)的(de)(de)熱(re)度 隨著2bv水(shui)(shui)環(huan)(huan)真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)泵(beng)(beng)(beng)(beng)(beng)冷凍(dong)水(shui)(shui)溫的(de)(de)升高,水(shui)(shui)環(huan)(huan)真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)泵(beng)(beng)(beng)(beng)(beng)的(de)(de)泵(beng)(beng)(beng)(beng)(beng)送(song)能量將(jiang)會(hui)嚴重(zhong)增加(jia)。水(shui)(shui)環(huan)(huan)真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)泵(beng)(beng)(beng)(beng)(beng)密(mi)封(feng)水(shui)(shui)的(de)(de)熱(re)量必須低于對(dui)應于排氣(qi)(qi)(qi)(qi)(qi)壓(ya)(ya)力(li)(li)(li)的(de)(de)飽和(he)熱(re)量,否則將(jiang)導致(zhi)水(shui)(shui)環(huan)(huan)真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)泵(beng)(beng)(beng)(beng)(beng)葉輪的(de)(de)氣(qi)(qi)(qi)(qi)(qi)蝕(shi)。因此,防止(zhi)氣(qi)(qi)(qi)(qi)(qi)蝕(shi)的(de)(de)目(mu)的(de)(de)是增加(jia)水(shui)(shui)的(de)(de)熱(re)量。 正(zheng)確選擇 在(zai)選擇階(jie)段,當選擇2bv水(shui)(shui)環(huan)(huan)真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)泵(beng)(beng)(beng)(beng)(beng)的(de)(de)吸入壓(ya)(ya)力(li)(li)(li)和(he)水(shui)(shui)的(de)(de)熱(re)度時,應盡可能避免水(shui)(shui)環(huan)(huan)真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)泵(beng)(beng)(beng)(beng)(beng)容易發(fa)生(sheng)氣(qi)(qi)(qi)(qi)(qi)蝕(shi)的(de)(de)壓(ya)(ya)力(li)(li)(li)范圍,即應防止(zhi)水(shui)(shui)環(huan)(huan)真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)泵(beng)(beng)(beng)(beng)(beng)在(zai)臨(lin)界真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)度或臨(lin)界排氣(qi)(qi)(qi)(qi)(qi)壓(ya)(ya)力(li)(li)(li)區域(yu)內(nei)(nei)運(yun)行,以避免發(fa)生(sheng)嚴重(zhong)的(de)(de)蒸(zheng)(zheng)汽(qi)腐蝕(shi)。 裝置(zhi)的(de)(de)氣(qi)(qi)(qi)(qi)(qi)蝕(shi)屏(ping)蔽管 裝有(you)氣(qi)(qi)(qi)(qi)(qi)蝕(shi)屏(ping)蔽管的(de)(de)2bv水(shui)(shui)環(huan)(huan)真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)泵(beng)(beng)(beng)(beng)(beng),壓(ya)(ya)縮時氣(qi)(qi)(qi)(qi)(qi)蝕(shi)破裂(lie)產生(sheng)的(de)(de)氣(qi)(qi)(qi)(qi)(qi)泡(pao),以及(ji)從(cong)內(nei)(nei)部引入壓(ya)(ya)力(li)(li)(li)較高的(de)(de)不(bu)凝氣(qi)(qi)(qi)(qi)(qi)體,可以及(ji)時補(bu)充氣(qi)(qi)(qi)(qi)(qi)泡(pao)破裂(lie)產生(sheng)的(de)(de)空(kong)(kong)(kong)間,這可以大(da)大(da)增加(jia)蒸(zheng)(zheng)汽(qi)嚴重(zhong)腐蝕(shi)對(dui)泵(beng)(beng)(beng)(beng)(beng)的(de)(de)危害(hai),增加(jia)氣(qi)(qi)(qi)(qi)(qi)蝕(shi)引起的(de)(de)噪音(yin)和(he)振動。 空(kong)(kong)(kong)氣(qi)(qi)(qi)(qi)(qi)噴(pen)射(she)器 大(da)氣(qi)(qi)(qi)(qi)(qi)噴(pen)射(she)器的(de)(de)功(gong)能是利用大(da)氣(qi)(qi)(qi)(qi)(qi)壓(ya)(ya)力(li)(li)(li)和(he)水(shui)(shui)環(huan)(huan)真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)泵(beng)(beng)(beng)(beng)(beng)之間的(de)(de)壓(ya)(ya)差產生(sheng)大(da)氣(qi)(qi)(qi)(qi)(qi)射(she)流,使(shi)噴(pen)射(she)器內(nei)(nei)的(de)(de)吸入壓(ya)(ya)力(li)(li)(li)比水(shui)(shui)環(huan)(huan)真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)泵(beng)(beng)(beng)(beng)(beng)低,從(cong)而消除水(shui)(shui)環(huan)(huan)真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)泵(beng)(beng)(beng)(beng)(beng)的(de)(de)極限壓(ya)(ya)力(li)(li)(li),防止(zhi)水(shui)(shui)環(huan)(huan)真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)泵(beng)(beng)(beng)(beng)(beng)氣(qi)(qi)(qi)(qi)(qi)蝕(shi),起到(dao)屏(ping)蔽水(shui)(shui)環(huan)(huan)真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)泵(beng)(beng)(beng)(beng)(beng)的(de)(de)作(zuo)用。由于設(she)置(zhi)空(kong)(kong)(kong)...
2020
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旋(xuan)片(pian)(pian)真(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)泵長期使(shi)(shi)用(yong)(yong)(yong)(yong)后(hou),會(hui)出現(xian)真(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)下(xia)(xia)(xia)降、密封處漏油(you)、真(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)泵旋(xuan)轉(zhuan)(zhuan)停滯(zhi)甚至(zhi)“卡滯(zhi)”、嚴重油(you)污(wu)、真(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)泵腔生銹(xiu)、旋(xuan)片(pian)(pian)撞擊聲大、硬物落入(ru)真(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)泵腔劃傷真(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)泵腔、真(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)泵過(guo)熱等(deng)異常現(xian)象。 此時,真(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)泵必須拆(chai)卸和(he)(he)清洗(xi)。該方(fang)法(fa)包(bao)(bao)括以(yi)(yi)下(xia)(xia)(xia)步驟。 (1)切斷電源,從真(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)系(xi)統(tong)中取出真(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)泵。 (2)用(yong)(yong)(yong)(yong)重力法(fa)或加壓法(fa)排放和(he)(he)收(shou)集污(wu)油(you),避免環境污(wu)染。 (3)取下(xia)(xia)(xia)皮帶和(he)(he)滑輪(lun)鍵(雙級旋(xuan)片(pian)(pian)真(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)泵包(bao)(bao)括皮帶)。 (4)先拆(chai)下(xia)(xia)(xia)低真(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)端(duan)(duan),拆(chai)下(xia)(xia)(xia)后(hou)端(duan)(duan)蓋(gai)(gai),然(ran)后(hou)拆(chai)下(xia)(xia)(xia)低真(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)轉(zhuan)(zhuan)子(zi)、旋(xuan)轉(zhuan)(zhuan)板、彈(dan)(dan)簧(huang)等(deng)。 (5)拆(chai)下(xia)(xia)(xia)前(qian)端(duan)(duan)蓋(gai)(gai),取出高真(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)轉(zhuan)(zhuan)子(zi)、轉(zhuan)(zhuan)盤、彈(dan)(dan)簧(huang)等(deng)。 (6)拆(chai)下(xia)(xia)(xia)視鏡、排氣閥、排氣蓋(gai)(gai)等(deng)。 (7)用(yong)(yong)(yong)(yong)汽油(you)徹底清洗(xi)去除(chu)的(de)金屬部件,并(bing)用(yong)(yong)(yong)(yong)酒精脫水。橡(xiang)膠部件可以(yi)(yi)用(yong)(yong)(yong)(yong)15%氟化氫鈉溶液煮沸除(chu)去油(you)。對(dui)于有毛刺或鐵銹(xiu)的(de)零件,可以(yi)(yi)使(shi)(shi)用(yong)(yong)(yong)(yong)油(you)石或金相(xiang)砂紙輕(qing)輕(qing)打(da)磨(mo)以(yi)(yi)去除(chu)銹(xiu)斑和(he)(he)毛刺。清潔過(guo)的(de)零件必須干燥。 (8)組(zu)裝(zhuang)時,先安(an)裝(zhuang)后(hou)級,托起(qi)彈(dan)(dan)簧(huang)和(he)(he)旋(xuan)轉(zhuan)(zhuan)板,安(an)裝(zhuang)到轉(zhuan)(zhuan)子(zi)中,然(ran)后(hou)將前(qian)端(duan)(duan)蓋(gai)(gai)安(an)裝(zhuang)到真(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)泵室(shi)內,安(an)裝(zhuang)定位銷(xiao),均勻對(dui)稱地擰緊螺釘。組(zu)裝(zhuang)后(hou),旋(xuan)轉(zhuan)(zhuan)應(ying)靈(ling)活均勻。安(an)裝(zhuang)前(qian)轉(zhuan)(zhuan)子(zi)和(he)(he)后(hou)端(duan)(duan)蓋(gai)(gai)后(hou),安(an)裝(zhuang)排氣閥(排氣閥片(pian)(pian)應(ying)緊緊地附在閥座上(shang))和(he)(he)其他(ta)部件,如氣體鎮流器裝(zhuang)置等(deng)。 旋(xuan)片(pian)(pian)真(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)泵維護注意(yi)事(shi)項(xiang),真(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)泵維護知識總結: (1)定期檢(jian)查油(you)位是否低以(yi)(yi)及干油(you)標記線。如果有低干油(you)標記,應(ying)及時加油(you)。杏(xing)會(hui)影響真(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)泵的(de)真(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)度。油(you)量不應(ying)太多,否則會(hui)導(dao)致起(qi)動困難和(he)(he)噴油(you)困難等(deng)問(wen)題。 (2)應(ying)注意(yi)真(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)泵的(de)正常運行(xing)...
2020
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如何選擇和(he)計算真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)空泵(beng)(beng)? 選擇真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)空泵(beng)(beng)之前,我們必(bi)須弄清楚(chu)一些基(ji)本概念: 真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)空 從理(li)(li)論(lun)(lun)(lun)上講(jiang),該(gai)體積中沒(mei)有(you)(you)(you)物質。 (實(shi)(shi)際(ji)上沒(mei)有(you)(you)(you)真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)正的(de)(de)(de)(de)真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)空。)通(tong)常(chang)(chang),容(rong)器中的(de)(de)(de)(de)壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)(li)(li)低(di)于(yu)正常(chang)(chang)大氣壓(ya)(ya)(ya)(ya)(ya)(101325 Pa)稱為(wei)真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)空狀態(tai)。 真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)空度(du)(du) 它表示(shi)真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)空狀態(tai)下氣體的(de)(de)(de)(de)稀薄(bo)程度(du)(du),通(tong)常(chang)(chang)由(you)壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)(li)(li)值(zhi)(zhi)(zhi)表示(shi)。在(zai)實(shi)(shi)際(ji)應用中,真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)空度(du)(du)通(tong)常(chang)(chang)有(you)(you)(you)兩個術語(yu):絕(jue)(jue)(jue)(jue)對(dui)(dui)(dui)(dui)真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)空和(he)相(xiang)(xiang)對(dui)(dui)(dui)(dui)真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)空。從真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)空計讀取的(de)(de)(de)(de)值(zhi)(zhi)(zhi)稱為(wei)真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)空度(du)(du)。真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)空值(zhi)(zhi)(zhi)是(shi)指示(shi)系統(tong)壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)(li)(li)的(de)(de)(de)(de)實(shi)(shi)際(ji)值(zhi)(zhi)(zhi)低(di)于(yu)大氣壓(ya)(ya)(ya)(ya)(ya)的(de)(de)(de)(de)值(zhi)(zhi)(zhi)。表格(ge)中顯示(shi)的(de)(de)(de)(de)值(zhi)(zhi)(zhi)也稱為(wei)表壓(ya)(ya)(ya)(ya)(ya)。這也稱為(wei)行業(ye)中的(de)(de)(de)(de)最終相(xiang)(xiang)對(dui)(dui)(dui)(dui)壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)(li)(li)。 (對(dui)(dui)(dui)(dui)于(yu)一般強度(du)(du),取101325Pa的(de)(de)(de)(de)絕(jue)(jue)(jue)(jue)對(dui)(dui)(dui)(dui)絕(jue)(jue)(jue)(jue)對(dui)(dui)(dui)(dui)壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)(li)(li),水環(huan)型真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)空泵(beng)(beng)為(wei)3300Pa;旋轉葉片真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)空泵(beng)(beng)的(de)(de)(de)(de)絕(jue)(jue)(jue)(jue)對(dui)(dui)(dui)(dui)絕(jue)(jue)(jue)(jue)對(dui)(dui)(dui)(dui)壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)(li)(li)約為(wei)10Pa) 絕(jue)(jue)(jue)(jue)對(dui)(dui)(dui)(dui)真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)空相(xiang)(xiang)對(dui)(dui)(dui)(dui)真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)空 極限相(xiang)(xiang)對(dui)(dui)(dui)(dui)壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)(li)(li) 相(xiang)(xiang)對(dui)(dui)(dui)(dui)壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)(li)(li)是(shi)所測得的(de)(de)(de)(de)內(nei)(nei)(nei)部(bu)壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)(li)(li)比(bi)“大氣壓(ya)(ya)(ya)(ya)(ya)”低(di)多少。該(gai)表顯示(shi)系統(tong)壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)(li)(li)的(de)(de)(de)(de)實(shi)(shi)際(ji)值(zhi)(zhi)(zhi)低(di)于(yu)大氣壓(ya)(ya)(ya)(ya)(ya)的(de)(de)(de)(de)值(zhi)(zhi)(zhi)。由(you)于(yu)容(rong)器內(nei)(nei)(nei)部(bu)的(de)(de)(de)(de)空氣被泵(beng)(beng)送,因(yin)(yin)此(ci)內(nei)(nei)(nei)部(bu)壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)(li)(li)始終低(di)于(yu)容(rong)器外部(bu)的(de)(de)(de)(de)壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)(li)(li)。因(yin)(yin)此(ci),當(dang)使(shi)用相(xiang)(xiang)對(dui)(dui)(dui)(dui)壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)(li)(li)或(huo)表壓(ya)(ya)(ya)(ya)(ya)時,該(gai)值(zhi)(zhi)(zhi)前必(bi)須帶有(you)(you)(you)負號(hao),以指示(shi)容(rong)器的(de)(de)(de)(de)內(nei)(nei)(nei)部(bu)壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)(li)(li)低(di)于(yu)外部(bu)壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)(li)(li)。 極限絕(jue)(jue)(jue)(jue)對(dui)(dui)(dui)(dui)壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)(li)(li) 絕(jue)(jue)(jue)(jue)對(dui)(dui)(dui)(dui)壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)(li)(li)是(shi)指測得的(de)(de)(de)(de)內(nei)(nei)(nei)部(bu)壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)(li)(li)比(bi)“理(li)(li)論(lun)(lun)(lun)真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)空(理(li)(li)論(lun)(lun)(lun)真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)空壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)(li)(li)值(zhi)(zhi)(zhi)為(wei)0Pa)”高多少。它比(bi)較(jiao)的(de)(de)(de)(de)對(dui)(dui)(dui)(dui)象是(shi)理(li)(li)論(lun)(lun)(lun)狀態(tai)的(de)(de)(de)(de)絕(jue)(jue)(jue)(jue)對(dui)(dui)(dui)(dui)真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)空壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)(li)(li)值(zhi)(zhi)(zhi)。由(you)于(yu)工(gong)藝(yi)限制(zhi),我們始終無法將內(nei)(nei)(nei)部(bu)壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)(li)(li)抽至絕(jue)(jue)(jue)(jue)對(dui)(dui)(dui)(dui)真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)空值(zhi)(zhi)(zhi)0Pa,因(yin)(yin)此(ci)真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)空泵(beng)(beng)抽出的(de)(de)(de)(de)真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)空值(zhi)(zhi)(zhi)高于(yu)理(li)(li)論(lun)(lun)(lun)真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)空值(zhi)(zhi)(zhi)。因(yin)(yin)此(ci),在(zai)使(shi)用絕(jue)(jue)(jue)(jue)對(dui)(dui)(dui)(dui)真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)空時,值(zhi)(zhi)(zhi)前面沒(mei)有(you)(you)(you)負號(hao)。 例如,設(she)備的(de)(de)(de)(de)真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)空度(du)(du)為(wei)0.098MPa,實(shi)(shi)際(ji)上為(wei)-0.098MPa 抽氣量 ...
2020
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爪式(shi)(shi)干(gan)式(shi)(shi)真空(kong)泵(beng)(beng)(beng)(beng)(beng)(beng)利(li)用(yong)(yong)連接(jie)到(dao)兩個軸的(de)(de)成對(dui)爪式(shi)(shi)轉子(zi)(zi)(zi)之間(jian)(jian)(jian)(jian)、轉子(zi)(zi)(zi)和(he)(he)泵(beng)(beng)(beng)(beng)(beng)(beng)腔(qiang)(qiang)內(nei)壁之間(jian)(jian)(jian)(jian)以(yi)及轉子(zi)(zi)(zi)和(he)(he)隔(ge)板之間(jian)(jian)(jian)(jian)的(de)(de)間(jian)(jian)(jian)(jian)隙和(he)(he)無摩擦(ca)接(jie)合(he)形(xing)成的(de)(de)封閉(bi)腔(qiang)(qiang)的(de)(de)容積(ji)變化(hua)來(lai)完成吸(xi)(xi)入和(he)(he)排出過(guo)程。 結構(gou) 爪式(shi)(shi)干(gan)式(shi)(shi)真空(kong)泵(beng)(beng)(beng)(beng)(beng)(beng)的(de)(de)結構(gou)一般采用(yong)(yong)多(duo)級(ji)(ji)(ji)轉子(zi)(zi)(zi)串聯或羅(luo)茨(ci)轉子(zi)(zi)(zi)與多(duo)級(ji)(ji)(ji)轉子(zi)(zi)(zi)串聯的(de)(de)形(xing)式(shi)(shi),形(xing)成多(duo)級(ji)(ji)(ji)爪式(shi)(shi)干(gan)式(shi)(shi)真空(kong)泵(beng)(beng)(beng)(beng)(beng)(beng)。 四個泵(beng)(beng)(beng)(beng)(beng)(beng)室依次串聯,每個泵(beng)(beng)(beng)(beng)(beng)(beng)室內(nei)有(you)一對(dui)爪形(xing)轉子(zi)(zi)(zi),爪形(xing)轉子(zi)(zi)(zi)相(xiang)互嚙(nie)合(he),同步(bu)反向運(yun)動(dong)。 四級(ji)(ji)(ji)泵(beng)(beng)(beng)(beng)(beng)(beng)室中的(de)(de)第一級(ji)(ji)(ji)泵(beng)(beng)(beng)(beng)(beng)(beng)室為吸(xi)(xi)入級(ji)(ji)(ji),其吸(xi)(xi)入容積(ji)大于后三級(ji)(ji)(ji),形(xing)成級(ji)(ji)(ji)間(jian)(jian)(jian)(jian)壓(ya)縮(suo)。 四對(dui)轉子(zi)(zi)(zi)安(an)裝在(zai)兩根(gen)平行(xing)的(de)(de)軸上,軸由(you)上下(xia)(xia)(xia)兩端的(de)(de)軸承支撐,泵(beng)(beng)(beng)(beng)(beng)(beng)室級(ji)(ji)(ji)和(he)(he)級(ji)(ji)(ji)之間(jian)(jian)(jian)(jian)設有(you)隔(ge)板,隔(ge)板上設有(you)吸(xi)(xi)排氣(qi)(qi)(qi)通(tong)道。 電機上下(xia)(xia)(xia)顛倒(dao)安(an)裝,通(tong)過(guo)交(jiao)叉齒輪(lun)將動(dong)力傳遞給(gei)轉子(zi)(zi)(zi)軸。轉子(zi)(zi)(zi)軸由(you)一對(dui)同步(bu)時(shi)限齒輪(lun)驅動(dong),并調節和(he)(he)固定(ding)(ding)轉子(zi)(zi)(zi)的(de)(de)相(xiang)位。 轉子(zi)(zi)(zi)之間(jian)(jian)(jian)(jian)和(he)(he)轉子(zi)(zi)(zi)與泵(beng)(beng)(beng)(beng)(beng)(beng)腔(qiang)(qiang)內(nei)部(bu)(bu)留有(you)小(xiao)間(jian)(jian)(jian)(jian)隙,轉子(zi)(zi)(zi)懸浮在(zai)泵(beng)(beng)(beng)(beng)(beng)(beng)腔(qiang)(qiang)內(nei),過(guo)流部(bu)(bu)分沒有(you)任(ren)何實(shi)質性的(de)(de)接(jie)觸摩擦(ca),不需要潤滑,保(bao)證了(le)爪式(shi)(shi)泵(beng)(beng)(beng)(beng)(beng)(beng)能夠長(chang)期穩定(ding)(ding)地(di)保(bao)持(chi)極高(gao)(gao)(gao)的(de)(de)真空(kong)度、泵(beng)(beng)(beng)(beng)(beng)(beng)速、恒定(ding)(ding)的(de)(de)壓(ya)縮(suo)比和(he)(he)長(chang)的(de)(de)使(shi)用(yong)(yong)壽命(ming)。 特(te)征 泵(beng)(beng)(beng)(beng)(beng)(beng)室不含任(ren)何介質,如油(you)等,清潔(jie)、排空(kong),對(dui)環境無污染。 高(gao)(gao)(gao)真空(kong),高(gao)(gao)(gao)達3Pa。 本實(shi)用(yong)(yong)新型結構(gou)簡單,易于操作和(he)(he)維護,運(yun)行(xing)成本低。 能在(zai)高(gao)(gao)(gao)壓(ya)下(xia)(xia)(xia)長(chang)時(shi)間(jian)(jian)(jian)(jian)連續工(gong)作,噪(zao)音小(xiao)。 它(ta)能去除腐蝕性氣(qi)(qi)(qi)體(ti)(ti)(ti)(ti)、有(you)毒氣(qi)(qi)(qi)體(ti)(ti)(ti)(ti)、易燃易爆氣(qi)(qi)(qi)體(ti)(ti)(ti)(ti)、放射性氣(qi)(qi)(qi)體(ti)(ti)(ti)(ti)、含塵(chen)氣(qi)(qi)(qi)體(ti)(ti)(ti)(ti)和(he)(he)可冷凝氣(qi)(qi)(qi)體(ti)(ti)(ti)(ti)(如水蒸氣(qi)(qi)(qi)、有(you)機氣(qi)(qi)(qi)體(ti)(ti)(ti)(ti)等)。)。 可用(yong)(yong)作氣(qi)(qi)(qi)體(ti)(ti)(ti)(ti)輸送泵(beng)(beng)(beng)(beng)(beng)(beng),壓(ya)縮(suo)比為10-105。 轉子(zi)(zi)(zi)對(dui)懸掛在(zai)泵(beng)(beng)(beng)(beng)(beng)(beng)腔(qiang)(qiang)內(nei),轉子(zi)(zi)(zi)對(dui)與泵(beng)(beng)(beng)(beng)(beng)(beng)腔(qiang)(qiang)無接(jie)觸,無摩擦(ca),使(shi)用(yong)(yong)壽命(ming)長(chang)。 ...
2020
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離(li)心(xin)泵(beng)(beng)出(chu)(chu)(chu)口(kou)(kou)的(de)(de)(de)(de)止(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)回(hui)(hui)(hui)(hui)(hui)(hui)(hui)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)的(de)(de)(de)(de)作用(yong)就是防止(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)出(chu)(chu)(chu)口(kou)(kou)管(guan)路(lu)(lu)(lu)(lu)中(zhong)的(de)(de)(de)(de)液體(ti)倒(dao)流(liu)形成(cheng)水(shui)(shui)(shui)錘造成(cheng)泵(beng)(beng)內葉輪損(sun)傷。 止(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)回(hui)(hui)(hui)(hui)(hui)(hui)(hui)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)的(de)(de)(de)(de)安裝(zhuang)(zhuang)與(yu)泵(beng)(beng)的(de)(de)(de)(de)多少無關(guan),止(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)回(hui)(hui)(hui)(hui)(hui)(hui)(hui)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)主要(yao)為(wei)了(le)在泵(beng)(beng)停止(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)運行后,防止(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)液體(ti)回(hui)(hui)(hui)(hui)(hui)(hui)(hui)流(liu),使泵(beng)(beng)倒(dao)轉,從而造成(cheng)損(sun)壞(huai)泵(beng)(beng)的(de)(de)(de)(de)事(shi)故,并且(qie)為(wei)了(le)防止(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)液體(ti)倒(dao)流(liu)對(dui)其他(ta)儲(chu)罐等的(de)(de)(de)(de)損(sun)壞(huai)(從高位罐倒(dao)流(liu)會造成(cheng)罐補抽壞(huai))。因此最好(hao)加(jia)上止(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)回(hui)(hui)(hui)(hui)(hui)(hui)(hui)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)。 如果能保(bao)證停泵(beng)(beng)前先關(guan)閉(bi)出(chu)(chu)(chu)口(kou)(kou)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa),且(qie)出(chu)(chu)(chu)口(kou)(kou)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)不(bu)內漏或損(sun)壞(huai),也可以不(bu)安止(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)回(hui)(hui)(hui)(hui)(hui)(hui)(hui)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)。 離(li)心(xin)泵(beng)(beng)出(chu)(chu)(chu)口(kou)(kou)止(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)回(hui)(hui)(hui)(hui)(hui)(hui)(hui)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)門(men)'止(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)回(hui)(hui)(hui)(hui)(hui)(hui)(hui)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)'的(de)(de)(de)(de)選(xuan)型(xing) 一(yi)般(ban)(ban)(ban)的(de)(de)(de)(de)泵(beng)(beng)站工程(cheng)情況,對(dui)于(yu)泵(beng)(beng)出(chu)(chu)(chu)口(kou)(kou)止(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)回(hui)(hui)(hui)(hui)(hui)(hui)(hui)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)的(de)(de)(de)(de)選(xuan)擇(ze),應(ying)遵循以下原則; 1、對(dui)泵(beng)(beng)出(chu)(chu)(chu)口(kou)(kou)管(guan)路(lu)(lu)(lu)(lu)口(kou)(kou)徑(jing)(jing)(jing)較小的(de)(de)(de)(de)管(guan)路(lu)(lu)(lu)(lu),即(ji)DN ≤50mm時,應(ying)選(xuan)用(yong)升(sheng)降式(shi)(shi)止(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)回(hui)(hui)(hui)(hui)(hui)(hui)(hui)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)。 2、對(dui)泵(beng)(beng)出(chu)(chu)(chu)口(kou)(kou)管(guan)路(lu)(lu)(lu)(lu)口(kou)(kou)徑(jing)(jing)(jing)DN50mm的(de)(de)(de)(de)管(guan)路(lu)(lu)(lu)(lu),應(ying)選(xuan)用(yong)旋(xuan)啟(qi)(qi)式(shi)(shi)止(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)回(hui)(hui)(hui)(hui)(hui)(hui)(hui)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)旋(xuan)啟(qi)(qi)式(shi)(shi)止(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)回(hui)(hui)(hui)(hui)(hui)(hui)(hui)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)可以水(shui)(shui)(shui)平或垂直安裝(zhuang)(zhuang)。旋(xuan)啟(qi)(qi)式(shi)(shi)止(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)回(hui)(hui)(hui)(hui)(hui)(hui)(hui)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)瓣(ban)(ban)繞(rao)轉軸作旋(xuan)轉運動,其流(liu)體(ti)阻力(li)(li)一(yi)般(ban)(ban)(ban)小于(yu)升(sheng)降式(shi)(shi)止(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)回(hui)(hui)(hui)(hui)(hui)(hui)(hui)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa),它(ta)適(shi)(shi)用(yong)于(yu)較大(da)(da)口(kou)(kou)徑(jing)(jing)(jing)的(de)(de)(de)(de)場合,安裝(zhuang)(zhuang)位置不(bu)受限制,通常安裝(zhuang)(zhuang)于(yu)水(shui)(shui)(shui)平管(guan)路(lu)(lu)(lu)(lu),它(ta)適(shi)(shi)用(yong)與(yu)較大(da)(da)口(kou)(kou)徑(jing)(jing)(jing)的(de)(de)(de)(de)場合。根據閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)瓣(ban)(ban)的(de)(de)(de)(de)數目可分為(wei)單(dan)(dan)瓣(ban)(ban)旋(xuan)啟(qi)(qi)式(shi)(shi)、雙瓣(ban)(ban)旋(xuan)啟(qi)(qi)式(shi)(shi)及多瓣(ban)(ban)旋(xuan)啟(qi)(qi)式(shi)(shi)三種。單(dan)(dan)瓣(ban)(ban)旋(xuan)啟(qi)(qi)式(shi)(shi)止(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)回(hui)(hui)(hui)(hui)(hui)(hui)(hui)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)一(yi)般(ban)(ban)(ban)使用(yong)與(yu)中(zhong)等口(kou)(kou)徑(jing)(jing)(jing)的(de)(de)(de)(de)場合。大(da)(da)口(kou)(kou)徑(jing)(jing)(jing)管(guan)路(lu)(lu)(lu)(lu)選(xuan)用(yong)單(dan)(dan)瓣(ban)(ban)旋(xuan)啟(qi)(qi)式(shi)(shi)止(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)回(hui)(hui)(hui)(hui)(hui)(hui)(hui)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)時,為(wei)減小水(shui)(shui)(shui)錘壓力(li)(li),最好(hao)采用(yong)能減小水(shui)(shui)(shui)錘壓力(li)(li)的(de)(de)(de)(de)緩閉(bi)止(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)回(hui)(hui)(hui)(hui)(hui)(hui)(hui)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)。雙瓣(ban)(ban)旋(xuan)啟(qi)(qi)式(shi)(shi)止(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)回(hui)(hui)(hui)(hui)(hui)(hui)(hui)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)適(shi)(shi)用(yong)與(yu)大(da)(da)中(zhong)口(kou)(kou)徑(jing)(jing)(jing)管(guan)路(lu)(lu)(lu)(lu)。對(dui)夾雙瓣(ban)(ban)旋(xuan)啟(qi)(qi)式(shi)(shi)止(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)回(hui)(hui)(hui)(hui)(hui)(hui)(hui)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)結構小、重量(liang)輕,是一(yi)種較快的(de)(de)(de)(de)止(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)回(hui)(hui)(hui)(hui)(hui)(hui)(hui)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa);多瓣(ban)(ban)旋(xuan)啟(qi)(qi)式(shi)(shi)止(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)回(hui)(hui)(hui)(hui)(hui)(hui)(hui)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)適(shi)(shi)用(yong)與(yu)大(da)(da)口(kou)(kou)徑(jing)(jing)(jing)管(guan)路(lu)(lu)(lu)(lu)。 離(li)心(xin)泵(beng)(beng)出(chu)(chu)(chu)口(kou)(kou)止(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)回(hui)(hui)(hui)(hui)(hui)(hui)(hui)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)的(de)(de)(de)(de)安裝(zhuang)(zhuang) ① 旋(xuan)啟(qi)(qi)式(shi)(shi)止(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)回(hui)(hui)(hui)(hui)(hui)(hui)(hui)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)一(yi)般(ban)(ban)(ban)安裝(zhuang)(zhuang)在水(shui)(shui)(shui)平管(guan)道上:對(dui)于(yu)口(kou)(kou)徑(jing)(jing)(jing)DN~80mm的(de)(de)(de)(de)止(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)...
2020
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02
真空(kong)(kong)(kong)泵(beng)(beng)(beng)(beng)是一(yi)種旋轉式變容真空(kong)(kong)(kong)泵(beng)(beng)(beng)(beng)須有(you)前(qian)級(ji)泵(beng)(beng)(beng)(beng)配合(he)方可使(shi)用(yong)(yong)在(zai)較寬的(de)(de)壓(ya)力(li)范圍內有(you)較大的(de)(de)抽速對(dui)(dui)被抽除(chu)氣(qi)體中(zhong)含有(you)灰塵和水(shui)蒸(zheng)汽不(bu)敏感廣泛(fan)用(yong)(yong)于(yu)冶金(jin)、化工(gong)、食品、電(dian)子(zi)鍍膜等(deng)行(xing)業。包括(kuo)水(shui)環泵(beng)(beng)(beng)(beng)、往復(fu)(fu)泵(beng)(beng)(beng)(beng)、滑閥泵(beng)(beng)(beng)(beng)、旋片泵(beng)(beng)(beng)(beng)、羅茨(ci)泵(beng)(beng)(beng)(beng)和擴散泵(beng)(beng)(beng)(beng)等(deng),目前(qian)這些(xie)泵(beng)(beng)(beng)(beng)是我國國民經濟各行(xing)業應(ying)用(yong)(yong)真空(kong)(kong)(kong)真空(kong)(kong)(kong)泵(beng)(beng)(beng)(beng)工(gong)藝(yi)過(guo)程(cheng)中(zhong)必不(bu)可少的(de)(de)主力(li)泵(beng)(beng)(beng)(beng)種。 真空(kong)(kong)(kong)輸運(yun)(yun)、吸(xi)(xi)(xi)(xi)(xi)收(shou)及起吊設(she)備(bei)、都是應(ying)用(yong)(yong)真空(kong)(kong)(kong)與大氣(qi)間存在(zai)壓(ya)力(li)差(cha)所產(chan)生的(de)(de)力(li)來做功的(de)(de)。由(you)于(yu)這種機(ji)(ji)械(xie)能存在(zai)著壓(ya)強處(chu)處(chu)平均的(de)(de)特(te)性,因(yin)而(er)可絕對(dui)(dui)密(mi)接地(di)施加到(dao)任何外(wai)形的(de)(de)平面(mian)(mian)上(shang)。目前(qian)、這些(xie)真空(kong)(kong)(kong)設(she)備(bei)大多(duo)用(yong)(yong)在(zai)吸(xi)(xi)(xi)(xi)(xi)魚、糧食、面(mian)(mian)粉(fen)、煤粉(fen)、煙草、水(shui)泥(ni)、泥(ni)漿(jiang)(jiang)、紙(zhi)漿(jiang)(jiang)、粉(fen)狀礦物(wu)(wu)粉(fen)狀化工(gong)產(chan)品,水(shui)泥(ni)地(di)板,預制(zhi)板、機(ji)(ji)場及公路水(shui)泥(ni)道(dao)的(de)(de)快速吸(xi)(xi)(xi)(xi)(xi)干、車間起吊、機(ji)(ji)床夾具,玻璃裝運(yun)(yun),吸(xi)(xi)(xi)(xi)(xi)乳、吸(xi)(xi)(xi)(xi)(xi)塵。人工(gong)流產(chan)吸(xi)(xi)(xi)(xi)(xi)收(shou)胎(tai)兒(er):吸(xi)(xi)(xi)(xi)(xi)痰、吸(xi)(xi)(xi)(xi)(xi)胸膜積水(shui)、膿液、吸(xi)(xi)(xi)(xi)(xi)腸以(yi)及吸(xi)(xi)(xi)(xi)(xi)收(shou)原子(zi)彈爆炸所產(chan)生的(de)(de)輻(fu)射塵埃等(deng)消費作(zuo)(zuo)業中(zhong)。這些(xie)設(she)備(bei)均具有(you)構造簡單,易于(yu)操作(zuo)(zuo)維護(hu)、運(yun)(yun)輸、起吊吸(xi)(xi)(xi)(xi)(xi)收(shou)過(guo)程(cheng)中(zhong)無震動、消費效(xiao)率高、運(yun)(yun)送易損壞物(wu)(wu)件平安(an)牢靠、對(dui)(dui)環境無污染等(deng)特(te)性。因(yin)而(er)具有(you)寬廣的(de)(de)應(ying)用(yong)(yong)范圍和前(qian)景。 真空(kong)(kong)(kong)外(wai)型(xing)也是應(ying)用(yong)(yong)壓(ya)差(cha)力(li)的(de)(de)一(yi)個重要方面(mian)(mian),近年來在(zai)平面(mian)(mian)軍(jun)用(yong)(yong)地(di)圖、盲人書籍(ji)、示(shi)數摸(mo)型(xing)、高級(ji)陶(tao)瓷、混(hun)凝土予制(zhi)件、電(dian)冰箱洗衣機(ji)(ji)板件、玩具、復(fu)(fu)制(zhi)浮雕(diao)和文物(wu)(wu)、行(xing)波管和返波管中(zhong)的(de)(de)細旋支(zhi)柱成形、質(zhi)譜(pu)儀(yi)中(zhong)剖析室以(yi)及微波系統的(de)(de)波導制(zhi)造方面(mian)(mian)、都普遍(bian)的(de)(de)采用(yong)(yong)了這一(yi)技術。