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lwz-150雙頭螺桿型干式無油真空泵的設(shè)計-wenkub

2022-08-30 17:59:15 本頁面
 

【正文】 、新材料的開發(fā)等技術(shù)領(lǐng)域 .都要求提供比較潔的內(nèi)真空環(huán)境 [1]。 畢業(yè)設(shè)計(論文)知識產(chǎn)權(quán)聲明 ...................................... 錯誤 !未定義書簽。 5 結(jié)論與展望 ......................................................................... 錯誤 !未定義書簽。 極限真空度、功率及冷卻水量 ...................................... 錯誤 !未定義書簽。 實際排氣量 ............................................................ 錯誤 !未定義書簽。 4 螺桿雙頭干式真空泵設(shè)計計算 .................................... 錯誤 !未定義書簽。 多頭雙邊對稱圓弧型線方程 .............................................................. 11 3 螺桿雙頭干式真空 泵工作原理 .................................... 錯誤 !未定義書簽。 關(guān)鍵詞 :雙頭干式真空泵 ; 螺桿 ; 型線 II LWZ150 DoubleHeaded Screw Type Dry Vacuum Pump Abstract The oilfree twinscrew vacuum pump is a new kind of rotational positive displacement structure of the pump is simple and liquids or solids are hard to accumulate when sucked with gas or are condensed or solidified in the pump. It is outstanding for its excellent efficiency, high vacuum, exhausting to the air directly, a long life, good sucking, reliable work, convenient maintenance, favorable dynamical balance, light vibration, no pressure fluctuate and noise, work placidly with high speed, strong adaptability, muftiphase duties, no quiver, easy to continuous exhausting, etc. It is used widely in industrial territory of metallurgy, electron, chemistry, pharmacy, food and environment, and so on. At present, all over the world have been trying their best to develop oilfree vacuum pumps, but our country has been fallen behind other countries. Although the demand of the oilfree vacuum pumps has been experiencing a rapid growth, the products of many multinational panies take up the major market share of dry pression vacuum pumps and high vacuum pumps. Therefore it is very significant to develop economical, feasible and reliable dryrunning vacuum pumps by us. For the sake of requirements of developing and researching in our country, the paper investigates the meshing theory of twinscrew pump, buildup of the rotors39。國外已發(fā)展出諸多此類 真空泵產(chǎn)品,而在我國的發(fā)展卻相對落后。雖然我國對無油真空泵的需求日益增長,但是許多跨國公司的真空泵產(chǎn)品卻在我國的高端真空泵市場中占據(jù)了主導(dǎo)位置。 curve, and leaks. Keywords: dry(oilfree)vacuum。 吸氣過程 .......................................................................... 錯誤 !未定義書簽。 螺桿基本尺寸 .................................................................. 錯誤 !未定義書簽。 進(jìn)排氣孔口 ...................................................................... 錯誤 !未定義書簽。 軸的強(qiáng)度計算 .................................................................. 錯誤 !未定義書簽。 參考文獻(xiàn) ..................................................................................... 錯誤 !未定義書簽。 如需要完整文檔及 cad 圖 等其他文件,請加球球:一九八五六三九七五五 1 緒論 1 1 緒論 概述 1905年德國人沃爾夫崗 .蓋德發(fā)明了油封式旋片泵,從此各種以油為工作液、潤滑劑、密封液的真空泵如雨后春筍般迅速普及,統(tǒng)治了真空設(shè)備市場近百年。傳統(tǒng)的有油泵很難滿足這些要求,無油泵的概念便自然而然的在此基礎(chǔ)上提出。對于這些少數(shù)有著特殊需要的工業(yè)來說,就只能采用無油污的無油泵或水環(huán)式泵類 (濕式泵 ),但這類泵的真空度不高,耗水耗能嚴(yán)重,而且相應(yīng)的工作時帶有大量的水汽,因此對于有雙頭干式要求的,又不得不采用繁瑣的物理、化學(xué)吸附,冷凝低溫手段,從而使成本變得極其昂貴。 課題背景及研究意義 雙頭干式螺桿真空泵是雙頭干式泵家族中的一員。總的來說是兩種不同的需求推動開發(fā)出兩種類型的干式泵。 另一類是以石化行業(yè)為代表,要求真空泵能大量抽除可凝性氣體,或腐蝕性氣體,或有毒氣體,或含有微塵的氣體。螺桿式雙頭干式真空泵零部件少,沒有易損件,因此它運轉(zhuǎn)可靠,壽命長。 ④ 適應(yīng)性強(qiáng)。造成這一現(xiàn)象的主要原
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