●特(tè)點：
3G三螺杆泵包括3G 通用型，3GC船用型及特殊型。3G三螺杆泵是轉子式容積泵，由于主動螺杆與從動螺杆上螺旋(xuán)槽相互齧(niè)合及它們與襯套三孔内表面(miàn)的配合，得以在泵(bèng)的進出口之間 形成數級動密封腔室(shì),這些(xiē)動密封腔室将不斷把液體由泵進口軸向移動到泵(bèng)出口，并使所輸 液體逐級升壓，從而(ér)形(xíng)成一個連續、平穩、軸(zhóu)向移動的壓力液體。Three-screw pump including 3 g, 3 g for general 3 gc Marine type and special type.3 g three screw pump is a positive displacement pump rotor type, due to the driving screw and driven screw spiral groove on the pitch and they cooperate with three hole on the surface of the liner, in between the import and export of the pump Form number level dynamic seal chamber, the dynamic seal chamber will continue to move from pump axial liquid pump discharge, and lose a liquid booster step by step, thus forming a continuous, smooth, axial movement of liquid pressure.
●3G三螺杆泵(bèng)适(shì)用介質(zhì)及性能範圍：3 g three-screw pump applicable medium range and performance
3G三螺杆泵所輸液體為各種不含固體(tǐ)顆粒，無腐(fǔ)蝕性油類及類似油的潤滑性液體(tǐ)，所輸液體粘度為1.2~100°E（3.0~760cst），高粘度(dù)液體亦可通過加溫降粘後(hòu)輸(shū)送。 流量範圍0.2~590m3/h，最高工作(zuò)壓力100bar，最高溫度150℃。3 g three-screw pump of liquid for various not containing solid particles, non-corrosive oil lubricity and similar oil liquid, the liquid viscosity is 1.2 ~ 100 ° E (3.0 ~ 760 CST), high viscosity liquid can be transmitted through heating after the viscosity.Flow range of 0.2 ~ 590 m3 / h, maximum working pressure of 100 bar, the highest temperature of 150 ℃.
●3G三螺杆泵結構:
1、結構簡單：具有多種結構形式，一般小(xiǎo)流量0.2~6.5m3/h，泵的(de)泵體和襯套合為一體（統稱泵體），軸封為機械(xiè)密封。Simple structure: has a variety of structural form, generally small flow of 0.2 ~ 6.5 m3 / h, pump body and pump bushing (generally referred to as the pump body), is an organic whole to shaft seal for the mechanical seal.
中等(děng)流量以上的泵(bèng)襯套為一單獨的零件固定于泵體内，大(dà)流量泵多制成(chéng)雙吸結構卧式安裝(zhuāng)，軸封根據輸送介質的不(bú)同有(yǒu)機械密封和填料密(mì)封兩種。Medium flow above the pump sleeve is fixed in a separate pump body, big flow made double suction pump more structure horizontal installation, depending on the medium of the shaft sealing has two kinds of mechanical seals and packing seal.
3G船用(yòng)泵的安裝形式有(yǒu)卧式(shì)和立式(shì)兩種，原動機為交、直流船用電動(dòng)機。3 g Marine pump installations have horizontal and vertical two kinds, prime mover for Marine ac or dc motor.
2、壽命長：3G三螺杆泵的主動螺(luó)杆由(yóu)電動機驅動，主、從杆之(zhī)間沒有機(jī)械接觸，而由(yóu)所(suǒ)輸壓力液體驅使從杆(gǎn)繞軸心線自轉，主、從杆之間、螺杆與襯套之間皆有一層油膜保護，因而泵的機械摩擦極(jí)小，壽命堪稱(chēng)半永久性。Long life: 3 g three-screw pump active screw driven by a motor, no mechanical contact between master and slave rod, and by a liquid pressure driven from rod rotated on its axis, the Lord, from between rod, screw and bushing is a layer of oil film protection, thus pump mechanical friction small, life is a permanent.
3、所輸液體在3G三(sān)螺杆泵内作軸向勻速直線運動，故壓力脈動小，流量穩定，噪音低，由于轉動部件慣性小，則起動力矩和振動很小。
4、3G三螺杆泵具有高吸(xī)入能力(lì)。Of liquid in a 3 g three-screw pump axial uniform motion in a straight line, so the pressure fluctuation is small, flow stability, low noise, due to the small inertia rotating parts, starting torque and small vibration.
5、為保證3G三螺杆泵、電機及(jí)管路系統的安全，中等流量以上的螺杆泵均帶有安全閥，當壓力超過安全閥的設定(dìng)壓力時，高壓油将回流至泵的進油口。In order to ensure the 3 g three screw pump, motor and the safety of the pipeline system, secondary flow above the screw pump is with safety valve, when pressure exceeds the set pressure of the relief valve, high pressure oil will flow back to the inlet of the pump.
