●3g三(sān)螺杆(gǎn)泵性能(néng):

　　用來輸送(sòng)溫度(dù)≤150℃、粘度(dù)3-760cst、不含固體顆粒、無腐(fǔ)蝕性、具有(yǒu)潤滑性能(néng)的介質。适用壓(yā)力範圍：0.6-2.5mpa;适(shì)用流量範圍(wéi)：0.6-123m3/h。主(zhǔ)要應(yīng)用于燃油輸送(sòng)、液壓工程(chéng)、船舶工程，石(shí)化及其(qí)他工業。used to transfer temperature 150 ℃, the viscosity of 3 or less - 760 cst, not containing solid particles,non-corrosive, has the lubrication performance of the medium.apply pressure range: 0.6 to 2.5 mpa;applicable flow range: 0.6-123 m3 / h.mainly used in the fuel transfer, hydraulic engineering, marine engineering, petrochemical and other industries.

●3g三螺(luó)杆(gǎn)泵應用範(fàn)圍:

　　1、介(jiè)質為直(zhí)線(xiàn)連續輸送、無攪拌、無(wú)脈動。2、振動小，噪(zào)音低(dī)。3、壓力高、效率高。4、結(jié)構簡單、拆裝方便。5、體積(jī)小，重量輕。6、磨損(sǔn)輕(qīng)微(wēi)，壽命(mìng)長。application scope: 1, medium for linear continuous transmission, without stirring, without pulsation.2, small vibration, low noise.3, high pressure and high efficiency.4, simple structure, convenient tear open outfit.5, small volume, light weight.6, wear light, long service life.

●3g三(sān)螺杆泵(bèng)工作原理:

　　3g型(xíng)三螺杆泵(bèng)是轉(zhuǎn)子型容積泵，适(shì)于輸送各(gè)種不含固體顆(kē)粒，無(wú)腐蝕(shí)性油(yóu)類及(jí)類似(sì)油的(de)潤滑性液(yè)體、輸(shū)送液體粘度2~760mm2/s，溫(wēn)度不超過(guò)80℃, 超過(guò)80℃可用高(gāo)溫泵3gw型。3 g type is three screw pump rotor type positive displacement pump, is suitable for conveying various not containing solid particles, non-corrosive oil lubricity and similar oil liquid, conveying liquid viscosity was 2 to 760 / s, temperature not over 80 ℃, more than 80 ℃ high temperature pump available 3 gw type.

    3g型三(sān)螺杆具有(yǒu)多種(zhǒng)結(jié)構，一般小流(liú)量泵(bèng)襯套(tào)和泵體合為一(yī)個，可以卧(wò)式和(hé)立式安(ān)裝。進油(yóu)口方(fāng)向可相隔(gé)90°任意(yì)安(ān)裝，軸封(fēng)多(duō)數(shù)為機構密(mì)封。中(zhōng)等流(liú)量以(yǐ)上泵，襯套(tào)為一(yī)個單獨(dú)的零件(jiàn)固定于泵體内(nèi)，螺杆軸端裝有(yǒu)平衡環(huán)以(yǐ)液力平衡其軸向力。一般(bān)結(jié)構為卧(wò)式。進油口方向亦可(kě)以相隔90°任(rèn)意安裝。改變泵體後可(kě)制成立(lì)式。軸(zhóu)封(fēng)根據情況有機(jī)械密封(fēng)和(hé)軟填料(liào)密封(fēng)兩種結構。three screw with multiple structure of 3 g, general small flow pump bushings and pump body into one, can be installed in a horizontal and vertical.oil inlet direction can be 90 ° apart any installation, most of the shaft sealing seal for your organization.the medium flow in pump, bushing as a separate component fixed in the pump body, screw shaft end is equipped with the gimbal ring to hydraulic balance the axial force.the general structure is horizontal.inlet direction also can be 90 ° apart any installation.after the change of pump body can be made into vertical.depending on the situation of the shaft sealing with mechanical seal and soft packing seal two structures.

    3g型(xíng)三(sān)螺杆(gǎn)泵(bèng)軸伸支(zhī)承較小，應由原(yuán)動機(jī)經彈性聯軸(zhóu)器直接驅動(dòng)，不得(dé)用皮(pí)帶輪(lún)等會産生額外徑向力較(jiào)大的(de)傳動(dòng)方式(shì)傳動。3 g type three-screw pump shaft and bearing is small, should be driven by a prime mover directly by the elastic coupling, shall not be used pulley will produce additional radial force large transmission way.

●3g三螺杆(gǎn)泵(bèng)輸送(sòng)各種(zhǒng)油類時(shí)應(yīng)注意事(shì)項(xiàng)：when conveying various oil matters should be paid attention to:

    1、輸送(sòng)40~150mm2/s的油類(lèi)最合适(shì)，允許按泵的最(zuì)高工(gōng)作壓力使(shǐ)用。2、輸送(sòng)40mm2/s以(yǐ)下的(de)油類，為保證泵(bèng)的流量(liàng)及壽命(mìng)應降壓使(shǐ)用。3、輸(shū)送150mm2/s以上的油類，且進(jìn)油管道過(guò)長，彎頭過多，泵(bèng)工作時如産生(shēng)噪音(yīn)或振動現象，則(zé)應考慮更(gèng)換低(dī)一級(jí)轉速的電機(jī)運轉或縮短(duǎn)吸入(rù)管道(dào)，減少彎(wān)頭。1, delivery was 40 ~ 150 / s best oils, permitted to use according to the maximum working pressure of pump.2, transmission oil, under 40 was/s in order to ensure the pump flow and life should be used antihypertensive.3, transmission of more than 150 was/s oils, and the oil inlet pipe is too long, too much bend, such as noise or vibration phenomenon when the pump work, should consider to replace the low level of rotational speed of motor operation or shorten the suction pipe, reducing elbow.

 ●3g型三(sān)螺(luó)杆泵安(ān)裝要求:3 g type three-screw pump installation requirements:

    1、安裝前應檢(jiǎn)查泵的油(yóu)封是否良(liáng)好(hǎo)，并檢查(chá)泵在(zài)運輸中是(shì)否損壞，可用手(shǒu)轉動聯軸(zhóu)器是(shì)否有卡勁(jìn)現象，如有則應(yīng)拆泵(bèng)進行(háng)清洗，修理和校(xiào)正。1, before installation should check whether the oil seal of the pump is good, and check the pump is damaged in transportation, turn the coupling usable hand card trouble phenomenon, if there is any should tear open pump for cleaning, repair and calibration.2、安裝泵(bèng)的進(jìn)油(yóu)和排油(yóu)管道時，其(qí)管徑不得(dé)小(xiǎo)于泵的(de)進油和出(chū)油口口徑(jìng)，進油管道(dào)不得過長，彎頭不得過多(duō)，否則(zé)将影響(xiǎng)泵(bèng)的工(gōng)作狀态。2, installation of pump suction and discharge of oil pipe, the pipe diameter shall not be less than the oil inlet of the pump and the oil outlet diameter, inlet pipe shall not be too long, elbow shall not too much, otherwise will affect the pump working condition.3、當有兩(liǎng)台以上的泵安(ān)裝在(zài)同一條主(zhǔ)管線上，為便于(yú)泵的啟動，在近(jìn)泵的(de)排油管上(shàng)必(bì)須安裝逆止(zhǐ)閥。3, when more than two head of pump installed in the same line, to facilitate pump start-up, in close to the oil drain pump must be installed on a non-return valve.4、對(duì)于(yú)在較高(gāo)溫度(dù)（指60℃以上）下(xià)輸送粘度大的油類(lèi)（如：重油）的(de)備(bèi)用泵，必須是(shì)熱備(bèi)用泵，否則(zé)泵在低溫下啟(qǐ)動會造成電機(jī)過載或泵損壞。（建(jiàn)議在靠近泵(bèng)的排油管(guǎn)上的(de)逆止(zhǐ)閥(fá)旁，并聯安裝一個(gè)小回(huí)流閥(fá)，對(duì)備用泵可微啟回(huí)流閥(fá)，使泵(bèng)緩(huǎn)慢逆轉，其逆(nì)轉速(sù)≤100轉/分(fèn)，使部(bù)分(fèn)熱油經常流過(guò)泵(bèng)内，達到泵熱備用目(mù)的）。4, for under high temperature (above 60 ℃) conveying the viscosity of oil (such as: heavy oil) of the standby pump, it must be hot standby pump, otherwise the pump at low temperature can cause the damage of motor overload or pump.(suggest near the exhaust non-return valve on the tubing pump, a small return valve installed in parallel, differentiable and the backflow preventer to standby pump, the pump slow reversal, the reverse speed 100 r/min or less, often make some hot oil flows through the pump, to pump hot standby purposes).5、輸送介質(zhì)内含有(yǒu)機械雜質。将嚴重影響泵(bèng)的運轉(zhuǎn)和降低使用壽(shòu)命，因此(cǐ)在泵安裝(zhuāng)前(qián)，必須仔細清除進油管内(nèi)的焊渣(zhā)，沙粒(lì)等雜質，并(bìng)應在進油管道(dào)靠近泵處安裝濾器(qì)，濾器(qì)網孔(kǒng)大小，可(kě)根據工(gōng)作情(qíng)況及介質(zhì)粘度确定。（一般(bān)可用40~80目(mù)網(wǎng)），過(guò)濾面積一(yī)般不得小于(yú)進油(yóu)管橫(héng)截面(miàn)積的20倍。5, mechanical impurity is contained within the transmission medium.will seriously affect the operation and reduce the service life of pump, so before the pump installation, must be carefully clean up the feed tube welding slag, impurities such as grains of sand, and shall be installed in the inlet pipe near the pump filter, filter mesh size, is decided according to the working condition and medium viscosity.available (40 ~ 80 mesh net), filter area generally shall not be less than 20 times into the cross-sectional area of the tubing 6、盡(jìn)量在泵進(jìn)油和(hé)排油(yóu)口處(chù)的螺紋孔上連接壓力表和(hé)真(zhēn)空表(biǎo)，以便于觀察泵(bèng)的(de)運轉狀(zhuàng)态。6, as far as possible in the pump suction and discharge of oil on the threaded hole mouth connect pressure gauge and vacuum gauge, in order to observe the pump running state.7、原(yuán)動機(jī)與泵的轉(zhuǎn)軸必(bì)須在同一(yī)中心線(xiàn)上，可用(yòng)直尺測隙規在聯軸(zhóu)器圓周上(shàng)間隔90°處檢(jiǎn)查。8、原動機(jī)與泵的轉(zhuǎn)向必須(xū)一緻，嚴(yán)格禁(jìn)止原(yuán)動機驅動(dòng)泵逆轉。電(diàn)機接線時，應先(xiān)脫開電機與泵的聯(lián)軸器，對電(diàn)機作試(shì)運(yùn)轉。使(shǐ)其轉(zhuǎn)向(xiàng)與(yǔ)泵的(de)轉向标志(zhì)一緻。7, prime mover and the pump shaft must be in the same center line, available ruler feeler gauge in the coupling of the circumference of a circle by 90 ° in check.8, steering engine and pump must be consistent, strictly prohibited prime motor driven pump reversal.electrical wiring, should first release coupling of motor and pump, a test run on the motor.the steering pump and steering sign agreement.

    工作原(yuán)理:

    由于(yú)各螺杆的相互齧合(hé)以(yǐ)及螺杆(gǎn)與襯筒内壁的(de)緊密配(pèi)合，在泵(bèng)的吸入(rù)口(kǒu)和排出口(kǒu)之間，就會(huì)被分(fèn)隔成一個(gè)或(huò)多個(gè)密封空(kōng)間。随着(zhe)螺杆的(de)轉動和齧合，這(zhè)些密封空間在(zài)泵的(de)吸入端不(bú)斷形成(chéng)，将吸入(rù)室中(zhōng)的液體封(fēng)入其中，并(bìng)自吸入室沿螺杆軸(zhóu)向連續地(dì)推移(yí)至排出端，将封(fēng)閉在 各空間中的液體(tǐ)不(bú)斷排(pái)出，猶如一(yī)螺母(mǔ)在螺紋(wén)回(huí)轉時(shí)被不斷向前推(tuī)進的(de)情形那樣(yàng)，其中螺紋圈數看做液體(tǐ)，當螺(luó)釘旋(xuán)轉時螺紋(wén)在轉(zhuǎn)動(dòng)時(shí)就相(xiàng)當于液(yè)體在螺杆泵(bèng)裡面的情形，這(zhè)就是螺杆泵的(de)基本(běn)工作(zuò)原理。螺杆與殼(ké)體之(zhī)間的密封(fēng)面是(shì)一(yī)個(gè)空間(jiān)曲面(miàn)。在(zài)這個曲(qǔ)面上存在(zài)着諸(zhū)如ab或(huò)de之類的非(fēi)密封區，并且(qiě)與螺杆(gǎn)的凹槽部(bù)分形成許多三角形的缺口abc、def。這(zhè)些三角形(xíng) 的缺(quē)口構(gòu)成(chéng)液體的(de)通道，使主動螺(luó)杆凹槽(cáo)a與從動螺杆上的(de)凹槽b、c相(xiàng)連通(tōng)。而凹槽(cáo)b、c又沿着自己的螺線繞向背面(miàn)， 并分别和背面(miàn)的凹(āo)槽(cáo)d、e相連通(tōng)。由于在槽d、e與槽f(它屬(shǔ)于另一頭(tóu)螺線)相銜(xián)接的(de)密封(fēng)面上，也存(cún)在着(zhe)類(lèi)似于正面的三(sān)角形缺(quē)口a’b’c’，所以d、f、e也将相(xiàng)通。這樣，凹槽abcdea也(yě)就組成一個“∞” 形(xíng)的密(mì)封(fēng)空間(如(rú)采用單(dān)頭(tóu)螺紋(wén)，則凹槽将順軸(zhóu)向盤饒螺(luó)杆，将吸排(pái)口貫通，無(wú)法形成密封)。不(bú)難(nán)想象，在(zài)這樣(yàng)的螺(luó)杆 上，将形(xíng)成許多個獨立的“∞”形密封空間(jiān)，每一(yī)個密封空(kōng)間所(suǒ)占有(yǒu)的軸(zhóu)向長度恰好等(děng)于累杆的(de)導程t。因此(cǐ)，為了使螺(luó)杆能吸(xī)、排油口分(fèn)隔(gé)開來，螺杆(gǎn)的螺紋段的長度至(zhì)少要(yào)大于(yú)一個導程(chéng)。due to the mutual engagement of each screw and screw and the close coordination of the liner wall, between the inlet and outlet of the pump, can be divided into one or more of the sealed space.with the rotation of the screw and the meshing, the sealed space in pump suction side form unceasingly, the liquid from the suction chamber seal in among them, and the suction chamber along the screw axial continuously goes on to the discharge end, will be closed in the space of the liquid discharge, like a nut in screw rotation being constantly move forward, the screw thread turns as liquid, when screw rotating screw rotation is equivalent to the liquid in the inside of the screw pump, this is the basic work principle of screw pump.the sealing surface between screw and shell is a space curved surface.exist on the surface of the sealing section, such as ab or de and screw groove part of the form many the gap of the triangle abc, def.these triangular gap formation fluid channels, make active screw groove with a driven screw groove on the connected to b and c.and groove b, c and along their spiral around to the back, and, respectively, and on the back of the groove connected to d and e.due to the tank d, e and f (it belongs to another head spiral) of corresponding seal surface, there are also similar to the positive triangle gap a 'b' c ', so d, f, e will also is same.so, grooves abcdea on forming a "up" form of the sealed space (such as using single thread, axial disc groove will arrange spare screw, connecting the suction paikou, unable to form a seal).it is not hard to imagine that in this kind of screw, will form a number of independent "up" form sealed space, each of the sealed space occupied the axial length equals the tired stem lead t.therefore, in order to make the screw suction and discharge of oil can be separated, the length of the screw thread of at least than a lead.

    螺杆(gǎn)泵有以下優點(diǎn)：1)壓力和流(liú)量範(fàn)圍寬闊(kuò)。壓(yā)力約(yuē)在3.4-340千克力(lì)/cm 2，流量(liàng)可達(dá)18600cm3/分；2)運送液(yè)體的(de)種類(lèi)和粘(zhān)度(dù)範圍寬廣；3)因(yīn)為泵内的回轉(zhuǎn)部件(jiàn)慣性力較(jiào)低，故可(kě)使用很(hěn)高的(de)轉速；4)吸入(rù)性能好，具有自(zì)吸能(néng)力；5)流量均(jun1)勻連(lián)續，振動小，噪音(yīn)低；6)與其它(tā)回轉(zhuǎn)泵相(xiàng)比，對進入(rù)的(de)氣體和(hé)污物(wù)不太敏感(gǎn)； 7)結構堅實(shí)，安裝(zhuāng)保養(yǎng)容(róng)易(yì)。rate of up to 18600 cubic cm/min;2) wide range of delivery and type of liquid viscosity;3) because the rotary inertia force component inside the pump is low, so it can be used in high speed;4) inhalation can good, have since

    螺杆泵的(de)缺點是，螺(luó)杆的加(jiā)工(gōng)和裝(zhuāng)配要(yào)求(qiú)較高；泵(bèng)的性能對(duì)液體的粘(zhān)度變化比(bǐ)較敏(mǐn)感(gǎn)。screw pump has the following advantages: 1) the wide range of pressure and flow.pressure about 3.4-340 kg/cm 2, flow

suction capacity;5) flow uniformly continuous, little vibration, low noise;6) compared with other rotary pump, less sensitive to enter gas and dirt;7) solid structure, installation and maintenance easy.the screw pump's disadvantage is that the screw processing and assembling the demand is higher;the performance of the pump is more sensitive to the viscosity of the liquid change.

    特點:★定(dìng)子與轉子接觸(chù)的螺旋(xuán)封線将收入(rù)腔(qiāng)與排出(chū)腔完(wán)全(quán)分(fèn)開，使泵具有閥門的(de)隔斷作用★可實(shí)現液、氣、固體的(de)多相(xiàng)混輸(shū)★泵内流體流(liú)動時容積不(bú)發生變化(huà)，沒有(yǒu)瑞(ruì)流攪動(dòng)和脈★彈(dàn)性定子(zǐ)形成的(de)容(róng)積腔(qiāng)能有(yǒu)效地(dì)降低(dī)輸送含固(gù)體顆(kē)粒介質時(shí)的磨(mó)耗★輸(shū)入介地粘(zhān)度可達50000mpa·s含(hán)固量可達50%★流量與轉(zhuǎn)速正比(bǐ)，借(jiè)助調(diào)速器(qì)可實(shí)現量(liàng)的自(zì)動調(diào)節,泵(bèng)可以(yǐ)正反輸送(sòng)。painted features: the stator and rotor contact of spiral sealing line cavity will income which is completely separated from the discharge chamber, make the pump valve painted the partition function can realize the liquid, gas, solid multiphase painted on the pump fluid flow within the volume does not change, no red painted flow agitation and pulse volume formed by elastic stator cavity can effectively reduce the abrasion when conveying medium containing solid particles taken the input interface to viscosity of up to 50000 mpa s. painted solid content of 50% is proportional to flow rate and rotational speed, with the help of governor can realize automatic adjustment of the pump can be positive and negative transfer.

    螺杆泵(bèng)具有以下優(yōu)點(diǎn)：1．和離心(xīn)泵相比(bǐ)螺(luó)杆泵(bèng)無需(xū)安裝閥們(men)流量是穩(wěn)定的線性(xìng)流動;2． 和柱(zhù)塞泵相比(bǐ)螺杆泵(bèng)具(jù)有自(zì)吸能(néng)力強(qiáng)、吸入(rù)高度(dù)強;3．和隔膜(mó)泵相(xiàng)比螺杆(gǎn)泵可輸(shū)送各(gè)種(zhǒng)混合雜(zá)質含有氣體及(jí)固體(tǐ)顆(kē)粒或纖(xiān)維的介質(zhì)，也可輸送(sòng)各(gè)種腐蝕(shí)性物質;4． 和齒輪(lún)相比(bǐ)，螺(luó)杆泵可(kě)輸送高(gāo)粘(zhān)度的(de)物質;5．和柱(zhù)塞泵(bèng)，隔膜泵及齒輪(lún)泵不(bú)同的是，螺(luó)杆(gǎn)泵可用(yòng)于藥(yào)劑填充(chōng)和(hé)計量(liàng).screw pump has the following advantages: 1. compared with screw pump and centrifugal pump doesn't need to install the valve flow is stable linear flow;2. compared with those of screw pump plunger pump self-priming capability is strong, strong suction height;3. compared with the 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;4. compared with gear, screw pump can transport high viscosity material;5. and plunger pump, diaphragm pump and the gear pump, screw pump can be used in the pharmaceutical filling and metering.

  注意(yì)事項:1.三螺(luó)杆(gǎn)泵的轉(zhuǎn)速選(xuǎn)用:三螺杆(gǎn)泵的(de)流量(liàng)與轉速成(chéng)線性關系,相對(duì)于低(dī)轉速的螺(luó)杆泵(bèng),高轉(zhuǎn)速的螺(luó)杆泵雖(suī)然能(néng)增(zēng)加了流(liú)量和(hé)揚程,但功率明(míng)顯增大,高轉速加速了轉子(zǐ)與定子間的(de)磨(mó)耗,必定(dìng)使螺(luó)杆泵(bèng)過早失效(xiào),而且(qiě)高轉(zhuǎn)速(sù)螺杆泵(bèng)的定轉子(zǐ)長度很短,極易(yì)磨損,因(yīn)而縮短(duǎn)了螺(luó)杆泵的使(shǐ)用壽命。通過減(jiǎn)速機或無級調(diào)速機構來降低(dī)轉速(sù),使勘轉速保持(chí)在每分三百轉(zhuǎn)以下較為合理(lǐ)的範圍内,與高速運(yùn)轉的螺(luó)杆泵相(xiàng)比,使(shǐ)用壽命能延長(zhǎng)幾倍(bèi)。2.螺杆泵的(de)品質(zhì):現在(zài)市場(chǎng)上的螺杆(gǎn)泵的(de)種類(lèi)較多(duō),相對(duì)而言,進口(kǒu)的(de)螺(luó)杆泵設計(jì)合(hé)理(lǐ),材質精良,但價(jià)格較高,服務(wù)方面有的不到位,配件(jiàn)價格(gé)高,訂貨周期長,可能影響生産(chǎn)的正常運(yùn)行。國内生産的大都(dōu)仿制進口(kǒu)産品,産品質量良莠(yǒu)不齊(qí),在選(xuǎn)用(yòng)國(guó)内生(shēng)産的産品(pǐn)時,在(zài)考慮其性價比的時候,選用低轉速,長導程,傳動量(liàng)部件(jiàn)材質優良(liáng),額定(dìng)壽命(mìng)長的産品(pǐn)。3.确保(bǎo)雜物不進(jìn)入泵(bèng)體:濕(shī)污泥(ní)中(zhōng)混入的(de)固(gù)體(tǐ)雜物會對(duì)螺杆(gǎn)泵的橡膠材質(zhì)定子(zǐ)造成損壞,所以确保(bǎo)雜物不(bú)進(jìn)入泵的腔(qiāng)體是很(hěn)重(zhòng)要的,很多污水廠在(zài)泵前加裝了(le)粉碎機,也有(yǒu)的安裝格(gé)栅裝置或(huò)濾(lǜ)網(wǎng),阻擋雜物(wù)進入(rù)螺杆泵,對于格(gé)栅應及時清撈以免(miǎn)造成(chéng)堵塞(sāi)。4.保持恒定(dìng)的出口壓(yā)力:螺(luó)杆泵是一種容(róng)積式回轉泵,當出口(kǒu)端受阻以(yǐ)後,壓(yā)力會(huì)逐漸升高(gāo),以至于超(chāo)過預定的壓力(lì)值.此時電機負(fù)荷急(jí)劇增加.傳(chuán)動機(jī)械相(xiàng)關零(líng)件(jiàn)的負載(zǎi)也會超出設計(jì)值,嚴(yán)重時會發生電機燒毀,傳(chuán)動(dòng)零(líng)件斷裂.為了避免(miǎn)螺(luó)杆泵損壞,一般(bān)會在(zài)三螺(luó)杆泵出(chū)口處安裝旁通溢流閥,用以(yǐ)穩定出口壓力,保持(chí)泵的正常(cháng)運轉(zhuǎn)。5.避免(miǎn)斷料:三螺杆(gǎn)泵決(jué)不(bú)允許在斷(duàn)料的情形下(xià)運轉,一經發生,橡(xiàng)膠定子由(yóu)于幹磨擦,瞬間(jiān)産(chǎn)生高溫(wēn)而燒壞,所以(yǐ),粉(fěn)碎(suì)機完(wán)好(hǎo),格栅(shān)暢通(tōng)是螺杆泵(bèng)正常(cháng)運轉的必(bì)要條件之一,為(wéi)此,有(yǒu)些螺(luó)杆泵(bèng)還在泵身(shēn)上安裝了斷料停機(jī)裝置,當發生斷料時,由于螺杆泵其(qí)有自吸功能的(de)特性(xìng),腔體内會(huì)産生(shēng)真空(kōng),真空裝(zhuāng)置(zhì)會使螺杆泵(bèng)停止運(yùn)轉(zhuǎn)。5選(xuǎn)型問題:三螺(luó)杆(gǎn)泵選(xuǎn)型時，要盡可能詳盡(jìn)地了(le)解泵的使用條件，除(chú)了運行參數，如(rú)流量，壓(yā)力需要(yào)清楚以(yǐ)外，輸送介質(zhì)的(de)特性如介質的腐(fǔ)蝕性(xìng)，含汽量，含固(gù)溶物的比率(lǜ)及固(gù)體顆粒(lì)的大小(xiǎo)，以及介質(zhì)的工作溫(wēn)度，粘度，比(bǐ)重，對材(cái)料的腐(fǔ)蝕性(xìng)等和泵裝置的吸(xī)入條件，安裝條件均要(yào)了解，