單螺桿泵概述

　　單螺桿泵（helical rotorpump;single-screw pump;monopump）屬于轉(zhuǎn)子式容積泵，它是依靠螺桿與襯套相互嚙合在吸入腔和排出腔產(chǎn)生容積變化來(lái)輸送液體的。Single screw pump (helical rotor pump; single - screw pump;mono pump) belongs to the rotor type positive displacement pump, itis depend on the screw meshing with liner on the discharge andsuction cavity to conveying liquid volumechange.它是一種內(nèi)嚙合的密閉式螺桿泵，主要工作部件由具有雙頭螺旋空腔的襯套（定子）和在定子腔內(nèi)與其嚙合的單頭螺旋螺桿（轉(zhuǎn)子）組成。Itis a kind of method of pressurized screw pump, a main working partsby bushing has a double helix cavity (stator) and the stator cavityand its meshing single-head screw screw(rotor).當(dāng)輸入軸通過(guò)萬(wàn)向節(jié)驅(qū)動(dòng)轉(zhuǎn)子繞定子中心作行星回轉(zhuǎn)時(shí)，定子 —轉(zhuǎn)子副就連續(xù)地嚙合形成密封腔，這些密封腔容積不變地作勻速軸向運(yùn)動(dòng)，把輸送介質(zhì)從吸入端經(jīng)定子 —轉(zhuǎn)子副輸送至壓出端，吸入密閉腔內(nèi)的介質(zhì)流過(guò)定子而不被攪動(dòng)和破壞。When the inputshaft through the universal joint drive making planets revolvingaround the center of the stator, rotor stator, rotor, vice iscontinuous mesh form sealed cavity, the seal chamber volumeinvariably uniform axial movement, the medium from the suction endof deputy to the stator, rotor pressure side, the suction mediumsealed cavity through the stator without stirring anddestruction.單螺桿泵分類(lèi)：整體不銹鋼單螺桿泵，軸不銹鋼單螺桿泵。Single screw pump classification: overall stainless steelsingle screw pump, stainless steel shaft single screwpump.

 

 

　　螺桿具有單頭螺紋，其任意截面皆為半徑為R的圓，截面的中心位于螺旋線上且與螺桿的軸心線偏離一個(gè)偏心距e，繞軸旋轉(zhuǎn)且沿軸向移動(dòng)而形成的頭數(shù)比Lobes：螺桿的定子的頭數(shù)T1比轉(zhuǎn)子的頭數(shù)T2多一個(gè)，即T1=T2+1。Screw with a singlethread, the arbitrary cross section of radius R the circle, thecenter of the cross section is located in a spiral line and screwaxis deviation from an eccentricity e, pivoting and move along theaxial and form Numbers than Lobes: screw the stator Numbers T1 onemore than the rotor quotas T2 and T1 = T2 +1.他們的比值成為頭數(shù)比。The ratio of their specificlobe.螺桿泵可以分為單頭（1：2）和多頭（2：3，3：4）等。Screw pump can be dividedinto single head (2-1) and long (2:3,3:4).頭數(shù)比越多，螺桿泵的輸出扭矩越大，轉(zhuǎn)速越低。The morespecific lobe, the greater the output torque of screw pump, thelower the speed.反之，輸出的扭矩越小，轉(zhuǎn)速越高。On theother hand, the output torque is smaller, the higher thespeed.襯套內(nèi)表面具有雙螺紋，其任意截面為一長(zhǎng)圓，兩端是半徑為R（等于螺桿截面半徑）的半圓，中間是長(zhǎng)為4e的直線段。Surface with doublethreads in the bushing, the arbitrary cross section for a long,both ends is radius R (equal to screw section radius) ofsemicircle, is long for a straight run of 4 e in themiddle.襯套的任意截面都是相同的長(zhǎng)圓，只是彼此互相錯(cuò)開(kāi)一個(gè)角度。Bushing of arbitrary cross section are the same long, justeach other stagger anAngle.螺桿裝入襯套后，螺桿表面與襯套內(nèi)螺紋表面之間形成一個(gè)個(gè)封閉的腔室，同時(shí)任意截面也被分成上下兩個(gè)月牙形工作室。Screwinto the bushing, between screw and bushing internal thread surfaceto form a closed chamber, and arbitrary cross section is dividedinto two crescent-shapedstudio.當(dāng)螺桿旋轉(zhuǎn)時(shí)，靠近吸入室的第一個(gè)工作室的容積逐漸增大，形成負(fù)壓，在壓差的作用下液體被吸入工作室。Whenthe screw rotates, the first studio near the suction chamber volumeincreases gradually, form the negative pressure, under the actionof pressure difference, liquid drawn into thestudio.隨著螺桿的繼續(xù)轉(zhuǎn)動(dòng)，工作腔容積不斷增至Zui大后，這個(gè)工作室封閉，并將液體沿軸向推向壓出室。Asa continuation of the screw rotation, continuous working volume tomaximum, the studio closed, pushed along the axial liquid and thepressure out of theroom.與此同時(shí)上下兩個(gè)工作室交替循環(huán)地吸入和排出液體，因此液體被連續(xù)不斷地從吸入室沿軸向推向壓出室。Atthe same time two studio cycle of suction and discharge liquid, sothe liquid is continuously from the suction chamber along the axialdirection to the pressure chamber.

　　

 

 

　　單螺桿泵由于結(jié)構(gòu)和工作特性Singlescrew pump due to the structure and workingcharacteristic

　　與活塞泵離心泵、葉片泵、齒輪泵相比具有下列諸多優(yōu)點(diǎn)：Piston pump and centrifugal pump, vane pump, gear pumpcompared with many of the following advantages:???1、能輸送高固體含量的介質(zhì)；1, the transmission of highsolid content of media can;2、流量均勻壓力穩(wěn)定，低轉(zhuǎn)速時(shí)更為明顯； 2, flow uniform pressure stability, low speed is moreobvious;3、流量與泵的轉(zhuǎn)速成正比，因而具有良好的變量調(diào)節(jié)性；3, flowis proportional to the pump speed, thus has a good regulatoryvariables;4、一泵多用可以輸送不同粘度的介質(zhì)；4, amulti-purpose pump can transport different viscosity ofmedium;5、泵的安裝位置可以任意傾斜；5, the installationposition of the pump can beue;6、適合輸送敏感性物品和易受離心力等破壞的物品；6 itemsand the centrifugal force, etc, is suitable for conveyingsensitivity damage items;7、體積小，重量輕、噪聲低，結(jié)構(gòu)簡(jiǎn)單，維修方便。7, small volume, light weight, low noise, simple structure,easy maintenance.

 

　　選用泵的規(guī)格是根據(jù)被輸送液體的性質(zhì)和流量、壓力來(lái)決定的，而泵的轉(zhuǎn)速則由輸送液體的粘度和腐蝕性、作為主要參數(shù)來(lái)選擇，才能保證泵可靠運(yùn)行。Choosethe specifications of the pump is according to the nature of theliquid to be delivered and decide the flow, pressure, while thepump speed by conveying liquid viscosity and corrosive, as the mainparameter to select, to ensure the pumprunning.泵的設(shè)計(jì)轉(zhuǎn)速為輸送清水或清水相類(lèi)似的無(wú)腐蝕性液體時(shí)允許Zui高轉(zhuǎn)速，在實(shí)際使用中因介質(zhì)性質(zhì)與壽命要求不同，選用時(shí)一般都應(yīng)低于設(shè)計(jì)轉(zhuǎn)速。Designspeed of pump for conveying water or similar withoutuid to allow the highest speed in the water, in be used actuallydue to the different re, dielectric properties andservice life when choosing generally should be lower than designspeed.對(duì)高粘度和含顆粒介質(zhì)，一般采用設(shè)計(jì)轉(zhuǎn)速的1/2-1/3或更低些，低轉(zhuǎn)速對(duì)泵的磨損有利，但在使用后由于定子的磨損流量下降，這時(shí)可適當(dāng)提高轉(zhuǎn)速，以補(bǔ)償流量下降也為常策。For high viscosity and particle medium, generally USES thedesign speed 1/2 - a third or more lower, low speed of pump wearand tear, but after use due to the wear and tear of the stator flowdown, then can be appropriately increased speed, to compensate fordeclining to often.輸送介質(zhì)的溫度應(yīng)在 -10℃～80℃特殊情況可高達(dá)120℃。The temperature of themedium should be - 10 ℃ ~ 80 ℃special circumstances can be as high as120 ℃.

泵的每級(jí)（定子的一個(gè)導(dǎo)程）正常壓力為 0.6Mpa，短時(shí)間（不超過(guò)30分鐘）內(nèi)允許高達(dá)0.8Mpa，當(dāng)磨損后在相同輸出壓力時(shí)的容積效率要逐步下降。Pump per level (lead) of the stator of a normal pressure is0.6 Mpa, inside short time (less than 30 minutes) to allow up to0.8 Mpa, when after wear and tear on the same output pressurevolumetric efficiency will decline gradually.泵送清水時(shí)Zui高吸程為8米，實(shí)際使用建議不超過(guò)6.5米，當(dāng)泵送高粘度介質(zhì)時(shí)，應(yīng)以正壓吸入。Whenpumping water to the highest suction is 8 meters, the actual usesuggest no more than 6.5 meters, when pumping high viscositymedium, the positive pressure breathing.

 

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