SNH280R43U12.1W21磨煤機潤滑(huá)油泵參數表

●SN三螺杆泵特點：SN three screw pump features:

   1.轉子液壓平衡，振動小，噪音低。1. The rotor of the hydraulic balance, little vibration, low noise.

   2.輸出穩定，無脈動。2. The output is stable, no pulsation.

   3.高效率。3. High efficiency.

   4.具有很強的自吸能力。4. Has a strong self-priming capacity.

   5.零部件(jiàn)采用通用性強的系列化設(shè)計，具有多種安裝方(fāng)式。5. Parts versatility of seriation design, with a variety of installation.

   6.結構緊湊，體積小(xiǎo)，重量輕，可在較高轉速下工作。6. Compact structure, small volume, light weight, can work under high rotation speed.

●SN三螺杆泵輸送介質種類：Low SN three screw pump transmission medium type:

　a. 潤(rùn)滑性液體(tǐ)：如機械(xiè)油，滑油，重油，渣油A. lubricate liquid, such as machine oil, lubricating oil, heavy oil, residual oil

　b. 低潤滑(huá)性液體：如輕柴油，重柴油，含蠟稀油B. lower lubricity liquid, such as light diesel oil, heavy diesel oil, wax containing thin oil

　c. 粘性液體：如各種合成(chéng)橡膠液和人(rén)造膠液，乳化液C. viscous liquid, such as various kinds of synthetic rubber and synthetic rubber, emulsion

●SN三螺杆泵應用：Low SN three screw pump application:

　·在(zài)供熱設備中(zhōng)用做燃油，燃油供應和輸送泵。In heating equipment used as fuel, fuel supply and transfer pump.

　·在機(jī)械(xiè)工業中用做液壓，潤滑和搖控馬達泵。In the mechanical industry used as hydraulic, lubrication pump and the remote control motors.

　·在化(huà)學石油化工和食品工業中用做裝載，輸送和(hé)供液泵。In the chemical, petrochemical and food industries used as loading, transportation and feed liquid pump.

　·在船舶上用做輸送、增壓、燃油噴射(shè)和潤滑油泵以及船用液壓裝置泵。On the ship, used for conveying, pressurization, fuel injection, and lubricating oil pump and Marine hydraulic gear pump.

   三螺杆泵(bèng)(SN三螺杆泵,sm三螺杆泵(bèng),spf三螺杆泵)選型時，要盡可能詳盡(jìn)地了解泵的使(shǐ)用條件，除運行參(cān)數，如流(liú)量、壓力須(xū)要弄清楚(chǔ)之外，輸送的介質的(de)特(tè)性(xìng)如介質的腐蝕性，含氣量含固溶物的比率及固體顆粒的大小以(yǐ)及介質的工作溫度、粘(zhān)度、比重對泵内過(guò)流元(yuán)件的腐蝕性等和泵裝置(zhì)的吸(xī)入條件，安裝條(tiáo)件均要了解。Three-screw pump (SN three screw pump, three screw pump, sm SPF three screw pump selection, should understand the using condition of pump as much detail as possible, in addition to the operating parameters, such as flow rate, pressure need to figure out, transmission characteristics, such as corrosive medium, the medium of air content of solid solution and the ratio of the size of the solid particles as well as the working temperature, medium viscosity, specific gravity within the pump flow components of corrosive and pump suction conditions, such as the installation conditions are to understand.

   用戶可(kě)以(yǐ)填(tián)寫附在本樣本後的(de)泵數據表，由廠家負責選型，也可以根據樣本(běn)按以下步驟自行選型。User can fill in the attached to this sample after pump data sheets, the manufacturer shall be responsible for the selection, can also according to the sample, follow these steps to selection.

   第一， 确定泵(bèng)的轉速：（SN 系列螺杆泵的極限轉速為＜6000r.p.m）Determine the speed of the pump: (SN series screw pump limit speed for < 6000 r. p.)

   1．螺杆泵轉速的選擇(zé)以輸送介質的粘度(dù)和泵的規格确定轉速範(fàn)圍，一般輸送高粘度介質時，螺杆泵應選低轉速；若粘度(dù)低 ，相應選(xuǎn)擇高轉速。The rotational speed of screw pump selection for medium viscosity and determine speed range of the specifications of the pump, transmission of high viscosity media in general, the screw pump should choose low speed;If the low viscosity, high speed accordingly.

   對于大規格的螺杆泵（主杆外徑∮60mm 以(yǐ)上）For the large size of screw pump (more than 30 main stem diameter of 60 mm)

   介質粘度γ＞20°E 時(shí)，轉速以970rpm 或720rpm 的螺杆泵。Medium viscosity gamma > 20 ° E, screw pump speed to 970 RPM and 720 RPM.

   若γ＞80°E 如粘膠液，轉速可選n=200~500rpm的螺杆泵If gamma > 80 ° E, such as viscose, of optional n = 200 ~ 500 RPM of the screw pump

   對(duì)于小規格的螺杆泵（主(zhǔ)杆外徑∮60mm 以下(xià)）：For small specifications of the screw pump (below 30 main stem diameter of 60 mm) :

   γ＞20°E 時，n 選1450rpm 或970rpm的螺杆泵. Gamma > 20 ° E, n selected 1450 RPM and 970 RPM of screw pump.

   γ＞80°E 時，n 選300~600rpm的螺杆泵(bèng)。Gamma > 80 ° E, n selected 300 ~ 600 RPM of the screw pump.

   2．由于螺杆泵的轉速愈高摩擦功率愈高，螺杆泵的磨損越大，壽命(mìng)越(yuè)短，如果輸送介質的(de)潤滑性較差，或(huò)含有微量雜質，應選較低轉速，使泵保持(chí)較長的使用壽命。推薦n＜1450rpm。Friction due to the higher the rotational speed of screw pump power, the higher the wear and tear of screw pump, the greater the shorter life, if the medium of lubricity is poorer, or trace impurities, should choose a lower speed, to keep pump with long service life.The recommended n < 1450 RPM.

   第二， 結構形式的選擇The choice of the form of structure

   結構的選擇可(kě)根據螺杆泵的運行環境(jìng)和(hé)安裝環境，選擇合(hé)适的安裝形式并遵循以下的原則：On the choice of structure based on the operating conditions of a screw pump and the installation environment, choosing the appropriate type of installation and follow the following principles:

   1． 輸送潤滑(huá)性油類，且(qiě)溫度T＜80℃時，選擇内置軸承結構的螺杆泵。1. Conveyor lubrication oil, and temperature T < 80 ℃, choose built-in bearing structure of the screw pump.

   2． 輸送潤滑性較差，或溫度T＞80℃時，選擇外置軸承結構的螺杆泵。2. The conveyor lubrication is poorer, or temperature T > 80 ℃, select external bearing structure of the screw pump.

   3． 輸送流動性差，粘度高的介質或對所輸送(sòng)介質進行加熱或保溫時，選雙層加熱泵體結構的螺(luó)杆泵。3. Conveyor illiquid, high viscosity of the medium or the transport medium for heating or thermal insulation, choose double screw pump heat pump body structure.

   4． 輸送高(gāo)溫介質時，應選擇(zé)耐高(gāo)溫的材料制成的泵(bèng)或局部冷卻的(de)螺杆泵。4. High temperature medium, high temperature resistant materials should be selected for the pump or cooling screw pump.

   5． 關于螺(luó)杆泵的吸(xī)入能力可(kě)查閱樣本(běn)。5. About the screw pump suction capacity can refer to the samples.

   第三， 螺杆泵材料組(zǔ)合的選擇 見上表Third, the choice of the screw pump material combination See the table above

   第四， 螺杆泵的吸上能(néng)力Fourth, the screw pump suction on ability

   通過降低轉速或加熱降低(dī)介質黏度的方法，可達到高的(de)吸上性能(néng)，見NPSHR 表By reducing the speed or heating medium viscosity reduction methods, can achieve high on absorption performance, see the NPSHR table

   第五，配(pèi)套電機的選配Fifth, motor selection

   螺杆泵的型号(hào)選定後(hòu)，根據樣本數據，可查到泵的軸(zhóu)功率N，該軸功率(lǜ)再加上一定的(de)功率儲備後，作為選配電機的(de)依(yī)據，一般電機功率Nm 不小于泵軸功率N 乘以功率儲(chǔ)備系數K 所得的值(zhí)即：Nm≥K·N。K 值Screw pump model is selected, according to the sample data, the pump shaft power can be N, the shaft power plus the power of a certain reserve, as a basis for the matching machine, general motors power Nm not less than the pump shaft power N times the power reserve coefficient K of the proceeds of the value, namely: the Nm acuity k. N.K value