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干式螺(luo)(luo)(luo)(luo)桿(gan)(gan)(gan)真空(kong)(kong)泵(beng)(beng)是洹過泵(beng)(beng)腔內—對作等速(su)反向旋(xuan)轉(zhuan)(zhuan)(zhuan)螺(luo)(luo)(luo)(luo)桿(gan)(gan)(gan)的(de)(de)(de)皓合作用(yong)(yong)， 吸入(ru)并排出(chu)被(bei)(bei)抽氣體而形(xing)成離真空(kong)(kong)， 其結(jie)構如右圖所示。 螺(luo)(luo)(luo)(luo)桿(gan)(gan)(gan)真空(kong)(kong)泵(beng)(beng)的(de)(de)(de)螺(luo)(luo)(luo)(luo)桿(gan)(gan)(gan)轉(zhuan)(zhuan)(zhuan)子(zi)型(xing)線(xian)采(cai)用(yong)(yong)自主(zhu)設計(ji)的(de)(de)(de)專利型(xing)線(xian)， 由—對斜齒齒輪驅動(dong)， 以順時針方向轉(zhuan)(zhuan)(zhuan)動(dong)（從電機風扇端(duan)(duan)側觀察）。 在螺(luo)(luo)(luo)(luo)桿(gan)(gan)(gan)旋(xuan)轉(zhuan)(zhuan)(zhuan)時， 二個螺(luo)(luo)(luo)(luo)桿(gan)(gan)(gan)之間、 螺(luo)(luo)(luo)(luo)桿(gan)(gan)(gan)和泵(beng)(beng)體之間都保持—定(ding)的(de)(de)(de)間隙且互不接(jie)觸(chu)， 因而運轉(zhuan)(zhuan)(zhuan)時泵(beng)(beng)腔內無(wu)摩擦，可(ke)以實現轉(zhuan)(zhuan)(zhuan)子(zi)的(de)(de)(de)離轉(zhuan)(zhuan)(zhuan)速(su)運轉(zhuan)(zhuan)(zhuan)。 依靠轉(zhuan)(zhuan)(zhuan)子(zi)間隙和泵(beng)(beng)腔間隙進行密封， 將被(bei)(bei)抽氣體被(bei)(bei)螺(luo)(luo)(luo)(luo)桿(gan)(gan)(gan)轉(zhuan)(zhuan)(zhuan)子(zi)平順地壓送到排氣口， 并直接(jie)排出(chu)泵(beng)(beng)腔， 螺(luo)(luo)(luo)(luo)桿(gan)(gan)(gan)泵(beng)(beng)兩(liang)端(duan)(duan)的(de)(de)(de)軸封確保齒輪箱內的(de)(de)(de)潤(run)滑油無(wu)法(fa)進入(ru)泵(beng)(beng)腔內部。 螺(luo)(luo)(luo)(luo)桿(gan)(gan)(gan)真空(kong)(kong)泵(beng)(beng)為臥式結(jie)構， 采(cai)用(yong)(yong)聯(lian)軸器與(yu)電機直聯(lian)。 TYLG100-TYLG220型(xing)號的(de)(de)(de)螺(luo)(luo)(luo)(luo)桿(gan)(gan)(gan)泵(beng)(beng)電機采(cai)用(yong)(yong)端(duan)(duan)面(mian)法(fa)蘭形(xing)式安裝(zhuang)于螺(luo)(luo)(luo)(luo)桿(gan)(gan)(gan)泵(beng)(beng)前蓋端(duan)(duan)面(mian)處， TYLG300及以上(shang)型(xing)號的(de)(de)(de)電機則采(cai)用(yong)(yong)端(duan)(duan)面(mian)加底腳的(de)(de)(de)形(xing)式， 與(yu)泵(beng)(beng)整體安裝(zhuang)在同—機架上(shang)。 為了減少泵(beng)(beng)的(de)(de)(de)排氣噪聲， 泵(beng)(beng)的(de)(de)(de)排氣口可(ke)配置消(xiao)聲器。

The dry screw vacuum pump forms a high vacuum by sucking and discharging the pumped gas through the meshing action of a pair of constant-speed and counter-rotating screws in the pump chamber. Its structure 1s shown in ther1ght figure.The screw 

rotorprofile of the screw vacuum pump adopts a self-designed patent profile, which 1s driven by a pair of helical gears and rotates in a clockwise direction (viewed from the end of the motor fan). When the screw rotates, a certain gap is ma1nta1ned 

between the two screws, and between the screw and the pump body and does not touch each otherTherefore, there 1s no frict1on 1n the pump cavity dur 1ng operat1on, and the high-speed operation of the rotorcan be real1zed.Relying on the rotorgap and the pump cavity gap for sealing, the pumped gas 1s smoothly pressed by the screw rotor to the exhaust port and directly discharged from the pump cavity. The shaft seals at both ends of the screw pump ensute that the lubricat1ng oil 1n the gearbox cannot enter the pump cavity .. The screw vacuum pump is a horizontal structu「e, which is directly connected to the mototbya

coupling. The TYLGl 00-TYLG220 screw pump motor is installed on the end face of the front cover of the screw pump in the form of an end face flange, while the motor of TYLG300 and above adopts the end face and foot form and 1s installed on the same 

frame as the pump. In orderto reduce the exhaust noise of the pump, the exhaust port of the pump can be equipped with a muffler.