●特點：
3G三螺杆(gǎn)泵包括3G 通用型，3GC船用型及特殊型。3G三螺杆泵是(shì)轉子式容積泵，由于(yú)主動(dòng)螺杆與從動螺杆上螺旋槽相互齧合及它們與襯(chèn)套三孔内表面的配合，得以在泵的進出(chū)口之間 形成數級(jí)動密封腔室,這些動密封腔室将不斷把(bǎ)液體由泵進(jìn)口軸向移動到泵出口，并使所輸 液體逐級升壓，從而形(xíng)成一個連續、平(píng)穩、軸向移動的壓力(lì)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(sān)螺杆泵适用介質及性能範圍：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顆粒，無腐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），高粘度液體亦可通過加溫降粘後輸送。 流量範(fàn)圍0.2~590m3/h，最高工作壓力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(yī)般小流量0.2~6.5m3/h，泵的(de)泵體和襯套(tào)合為一(yī)體（統(tǒng)稱泵體），軸封(fēng)為機械密封。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.
中等流量以上的泵襯套(tào)為一單獨的零件固定于泵體内，大(dà)流量泵多制成雙吸結構卧式安裝，軸封(fēng)根據輸送介質的不同有機械密封和填料密封兩(liǎng)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船用泵的安裝形式有(yǒu)卧(wò)式和立式兩(liǎng)種，原動機為交、直流船用(yòng)電動機。3 g Marine pump installations have horizontal and vertical two kinds, prime mover for Marine ac or dc motor.
2、壽命長：3G三螺杆泵的主動螺杆由(yóu)電動機驅動，主、從杆之間(jiān)沒有機械接觸，而由(yóu)所輸壓力液體驅使(shǐ)從杆繞軸心線自(zì)轉，主、從杆之間、螺(luó)杆與襯套之間(jiān)皆有一層油膜保護(hù)，因而泵的機械摩擦極小，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三螺杆泵内作軸向勻速直線(xiàn)運(yùn)動，故壓力脈動小，流量穩定，噪音低，由于(yú)轉動部件(jiàn)慣性小，則起動力(lì)矩和振動很小。
4、3G三螺杆泵具有高吸入能力。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、電機及管路系統的安全，中等流量以上的螺杆泵均(jun1)帶有安全閥，當壓力超過安全閥的設定壓力時，高(gāo)壓油将回流(liú)至泵(bèng)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.
