①和離心泵相比螺杆泵無需安裝閥門，流(liú)量(liàng)是穩定的線(xiàn)性流動，壓力和(hé)流量範圍寬闊而且穩定，脈動很小(xiǎo)。壓力約在 3.4-340 Kg.N /cm2 ，流量可達 18600L/min，液體在泵作連(lián)續而勻速的直線運動，無攪拌現象。(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流量與泵的轉速成正比，因而具有(yǒu)良好的變量調節性(xìng)。(2) the flow is proportional to the pump speed, thus has a good regulatory variables.
③和柱塞泵相比螺杆泵具有自吸能(néng)力強、吸入高度(dù)強，無需裝置底閥抽真空的附屬設備。(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和齒輪相比，螺(luó)杆泵可輸送高粘(zhān)度的物質；運送液體的種類和粘度範圍寬廣。(4) compared with gear, screw pump can transport high viscosity material;Wide range of delivery and type of liquid viscosity.
⑤相互(hù)齧合(hé)的螺杆磨損甚少，泵的使用壽命長，一般滑油泵能使用30-40年，甚至(zhì)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泵的振動和噪聲(shēng)極小(xiǎo)。The vibration and noise of the pump.
⑦因(yīn)為泵内(nèi)的回轉部件慣性力較低，可在高轉速(sù)下工作(zuò)。because the rotary inertia force component inside the pump is low, can work under high rotation speed.
⑧結構簡單(dān)緊湊，拆裝方便，體積小，質量輕。結構堅實，安裝保養容易。Was simple and compact structure, easy to tear open outfit, small volume, light quality.Solid structure, installation and maintenance easy.
⑨和隔膜泵相比(bǐ)螺杆泵可輸送各(gè)種混合雜質(zhì)含有(yǒu)氣體及固體顆粒或纖維的介質，也可輸送各種腐蝕性物質； 對進入的(de)氣體和污物不太敏感。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，隔膜泵及齒輪泵不同的是，螺杆泵可用于藥劑填充和計量。Attending and plunger pump, diaphragm pump and the gear pump, screw pump can be used in the pharmaceutical filling and metering.
缺點：Disadvantages:
①對被輸送液體中的粘度變化十分敏感。(1) is sensitive to the viscosity change of the liquid to be delivered.
②螺杆的加工精度(dù)要(yào)求高、制造困難。(2) screw machining accuracy requirement is high, the manufacturing difficulty. |
