①和離心(xin)泵相比螺杆泵無(wú)需安裝閥門，流量(liàng)是穩定的線性流(liu)動，壓力和流量範(fàn)圍寬闊而且穩定(dìng)，脈動很小。壓力約(yuē)在 3.4-340 Kg.N /cm2 ，流量可達 18600L/min，液體(ti)在泵作連續而勻(yún)速的直線運動，無(wú)攪拌現象。(1) there is no need to install the valve compared with screw pump and centrifugal pump, the flow is stable linear flow, and wide range of pressure and flow stability, ripple is small.Pressure about 3.4-340 Kg. N/cm2, flow rate of up to 18600 l/min, liquid in the pump for continuous and uniform linear motion, no mixing phenomenon.
    ②流量與(yu)泵的轉速成正比(bi)，因而具有良好的(de)變量調節性。(2) the flow is proportional to the pump speed, thus has a good regulatory variables.
    ③和柱(zhu)塞泵相比螺杆泵(bèng)具有自吸能力強(qiáng)、吸入高度✊強，無需(xu)裝置底閥抽真空(kōng)的附屬設備。(3) compared with those of screw pump plunger pump self-priming capability is strong, strong suction height, without bottom valve vacuum device accessory equipment.
    ④和齒(chi)輪相比，螺杆泵可(ke)輸送高粘度的物(wù)質；運送液體的種(zhong)類和粘度範圍寬(kuān)廣。(4) compared with gear, screw pump can transport high viscosity material;Wide range of delivery and type of liquid viscosity.
    ⑤相互齧合的螺(luó)杆磨損甚少，泵的(de)使用壽命長，一般(bān)滑油泵能使📧用30-40年(nian)，甚至更長。(5) mutual engagement of screw little wear and tear, long service life of pump, oil pump can be used commonly 30-40 years, or longer.
    ⑥泵的振(zhèn)動和噪聲極小。The vibration and noise of the pump.
    ⑦因(yin)為泵内的回轉部(bu)件慣性力較低，可(ke)在高轉速下工作(zuo)。because the rotary inertia force component inside the pump is low, can work under high rotation speed.
    ⑧結構簡單緊湊，拆(chāi)裝方便，體積小，質(zhì)量輕。結構堅實，安(an)裝保養容易。Was simple and compact structure, easy to tear open outfit, small volume, light quality.Solid structure, installation and maintenance easy.
    ⑨和隔(ge)膜泵相比螺杆泵(beng)可輸送各種混合(hé)雜質含有氣✔️體及(ji)固體顆粒或纖維(wei)的介質，也可輸送(song)各種腐蝕性物質(zhi)； 對進入的氣體和(he)污物不太敏感。Pet-name ruby compared with diaphragm pump screw pump can transport all kinds of gas and solid particle mixing impurities or fiber medium, also can transport all kinds of corrosive substance;To enter a less sensitive gas and dirt.
    ⑩和(hé)柱塞泵，隔膜泵及(jí)齒輪泵不同的是(shì)，螺杆泵可用于藥(yào)劑填充和計量。Attending and plunger pump, diaphragm pump and the gear pump, screw pump can be used in the pharmaceutical filling and metering.
 缺(que)點：Disadvantages:
    ①對被輸送液體(ti)中的粘度變化十(shí)分敏感。(1) is sensitive to the viscosity change of the liquid to be delivered.
    ②螺杆的加(jiā)工精度要求高、制(zhì)造困難。(2) screw machining accuracy requirement is high, the manufacturing difficulty.