●3g三(sān)螺(luó)杆泵輸送(sòng)各種(zhǒng)油類(lèi)時應注意(yì)事項：when conveying various oil matters should be paid attention to:

    1、輸送(sòng)40~150mm2/s的油類最(zuì)合适，允許(xǔ)按泵(bèng)的最高工(gōng)作壓(yā)力使用。2、輸(shū)送40mm2/s以下的油類(lèi)，為保證(zhèng)泵的流(liú)量及壽命應降(jiàng)壓使(shǐ)用。3、輸送150mm2/s以(yǐ)上的油類(lèi)，且進(jìn)油管道(dào)過長，彎(wān)頭過多，泵工作(zuò)時如産生噪音(yīn)或振動(dòng)現(xiàn)象(xiàng)，則(zé)應考(kǎo)慮更(gèng)換低(dī)一級轉速的電機運(yùn)轉或縮短(duǎn)吸入管道，減少(shǎo)彎頭。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型三螺杆(gǎn)泵安(ān)裝要(yào)求:3 g type three-screw pump installation requirements:

    1、安(ān)裝前應檢查泵(bèng)的油(yóu)封是否良好(hǎo)，并檢查泵在(zài)運輸中是(shì)否損(sǔn)壞，可用(yòng)手(shǒu)轉動(dòng)聯軸器是否有卡勁現象，如有(yǒu)則應拆泵(bèng)進行(háng)清洗(xǐ)，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)油和(hé)排(pái)油(yóu)管道(dào)時，其(qí)管徑(jìng)不得小于泵的進油(yóu)和出油口口徑(jìng)，進油(yóu)管道(dào)不得(dé)過長，彎頭不得過多(duō)，否則将影(yǐng)響(xiǎng)泵的(de)工作狀(zhuàng)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(dāng)有兩台以(yǐ)上的泵安裝在(zài)同一(yī)條(tiáo)主管線上，為便于(yú)泵的啟動，在(zài)近(jìn)泵的(de)排油管上必須(xū)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、對于在較(jiào)高溫度（指60℃以上）下輸送(sòng)粘度(dù)大的(de)油類(lèi)（如：重(zhòng)油）的備用(yòng)泵，必(bì)須是(shì)熱備用泵，否則(zé)泵在(zài)低溫下啟(qǐ)動會造成(chéng)電機過載(zǎi)或泵損壞(huài)。（建(jiàn)議(yì)在靠近(jìn)泵(bèng)的排(pái)油管上的逆止(zhǐ)閥旁，并聯安裝(zhuāng)一個小回流閥(fá)，對備用(yòng)泵可微(wēi)啟回流閥，使泵(bèng)緩慢逆(nì)轉，其逆轉速(sù)≤100轉/分(fèn)，使部(bù)分熱油經常流(liú)過泵内(nèi)，達到(dào)泵熱備(bèi)用目的）。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(shū)送介質(zhì)内(nèi)含有(yǒu)機械(xiè)雜(zá)質。将嚴(yán)重(zhòng)影響泵的運(yùn)轉和(hé)降低使(shǐ)用(yòng)壽命，因(yīn)此(cǐ)在泵安裝前(qián)，必須仔細清除(chú)進油管(guǎn)内的焊渣，沙粒(lì)等雜質，并(bìng)應在進油(yóu)管道靠近(jìn)泵處安裝濾器(qì)，濾器(qì)網孔大小(xiǎo)，可(kě)根據工作情(qíng)況及介質(zhì)粘度确定(dìng)。（一般(bān)可用(yòng)40~80目網），過濾(lǜ)面積(jī)一般不得小于(yú)進油管橫截面(miàn)積的(de)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、盡量在泵進油和(hé)排油(yóu)口處的螺(luó)紋孔上連接(jiē)壓力表(biǎo)和真空表(biǎo)，以便(biàn)于觀察泵(bèng)的(de)運(yùn)轉狀态。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、原動機與泵(bèng)的轉(zhuǎn)軸必(bì)須在同(tóng)一(yī)中心(xīn)線上，可用(yòng)直尺(chǐ)測隙(xì)規在聯軸(zhóu)器圓周上(shàng)間隔(gé)90°處檢(jiǎn)查。8、原(yuán)動機(jī)與泵(bèng)的轉向必(bì)須一緻，嚴(yán)格禁止原(yuán)動機驅動泵逆(nì)轉。電(diàn)機接線時，應(yīng)先脫開電機與泵(bèng)的聯(lián)軸器，對電機作(zuò)試運轉。使其轉(zhuǎn)向與泵的轉向(xiàng)标志一(yī)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.

●3g型(xíng)三螺(luó)杆(gǎn)泵的使用(yòng)

　　1、泵啟動前，必(bì)須全開進油(yóu)和排油(yóu)閘閥。the use of 3 g type three-screw pump 1, before starting the pump, oil inlet must be fully open and oil discharge gate valve.2、首次(cì)啟動泵或(huò)再次(cì)使用長期封存(cún)的泵時，泵(bèng)内無(wú)介質，應在泵的(de)進油腔(qiāng)灌(guàn)注适(shì)量輸(shū)送(sòng)介質，避(bì)免泵幹啟動。2, start the pump for the first time or again for a long time use of the pump, the pump inside without medium, should be in the inlet of the pump cavity perfusion amount transfer medium, avoid dry start pump 3、泵啟動(dòng)後，應密切(qiē)注意電流(liú)表，壓力表和(hé)真空表(biǎo)的數值(zhí)，超出規(guī)定值時(shí)，應停泵(bèng)找出原因(yīn)後，再(zài)行啟動。3, the pump starts, should pay close attention to current meter, pressure gauge and vacuum gauge value, beyond the specified value, should stop pump after find out, start again.4、軸封處(chù)點滴洩(xiè)露(lù)，應屬(shǔ)正常現(xiàn)象，當洩(xiè)露量大量(liàng)增加時，對軟填(tián)料密(mì)封應壓緊填料壓蓋(gài)，對機械密(mì)封應停(tíng)泵修複(fú)後，再行(háng)啟動。4, shaft sealing drip leakage, should belong to the normal phenomenon, when the leak amount of increase, the soft packing seal should be compression packing gland, to pump mechanical seal shall be shutdown after repair, start again.5、用(yòng)高溫蒸汽清掃(sǎo)管線(xiàn)時，應(yīng)避免(miǎn)高溫蒸汽通過泵内。5, with high temperature steam cleaning pipeline, should avoid high temperature steam through the pump.6、如果泵長(zhǎng)期不(bú)工作時，應(yīng)進行(háng)油封，并定(dìng)期檢查油(yóu)封情(qíng)況，必(bì)要時重新(xīn)油封(fēng)。6, if the pump is not working for a long time, should carry on the oil seal, and regularly check oil seal, oil seal again if necessary.

●三螺杆泵(bèng)特點(diǎn)及優點：

　　（1）壓(yā)力和流量範圍(wéi)寬闊(kuò)，流(liú)量範圍0.2～320m3/h最高工作(zuò)壓力(lì)可達5mpa；（2）運(yùn)送液體的種(zhǒng)類和粘度(dù)範圍(wéi)寬(kuān)廣,粘度(dù)範圍1mm2/s-760mm2/s；（3）因為(wéi)三螺(luó)杆泵(bèng)内的回轉部件(jiàn)慣(guàn)性力較低，故(gù)可使用很(hěn)高(gāo)的轉速(sù)；（4）吸入(rù)性能好，具有很(hěn)強的自吸(xī)能力；（5）流量(liàng)均(jun1)勻連續(xù)，振動小，噪(zào)音低，幾乎(hū)沒有脈動(dòng)；（6）三螺杆(gǎn)泵結構堅實(shí)，安(ān)裝(zhuāng)方便有(卧式(shì)、立式、法(fǎ)蘭式(shì)、插裝式）保(bǎo)養容易；（7）三(sān)螺杆(gǎn)泵具(jù)有很強(qiáng)的(de)耐熱性，一般工作溫(wēn)度是（1~250°c)超過此溫度需(xū)特制；（8）根據所輸送介(jiè)質需要(yào)還(hái)可提(tí)供加熱或(huò)冷卻(què)結構；（9）三螺杆泵幾乎沒(méi)有磨損(sǔn)，三(sān)螺杆泵隻要(yào)選型(xíng)正(zhèng)确，使用(yòng)壽命長。（10）三螺杆(gǎn)泵的工(gōng)作效率(lǜ)高。

●三(sān)螺(luó)杆泵注意(yì)事項

    1.三螺杆(gǎn)泵的轉速選(xuǎn)用(yòng):三螺(luó)杆(gǎn)泵的流(liú)量與轉(zhuǎn)速成線(xiàn)性關(guān)系,相(xiàng)對于(yú)低轉速的螺杆(gǎn)泵,高(gāo)轉速的螺(luó)杆泵雖然能增加了(le)流(liú)量(liàng)和揚(yáng)程,但(dàn)功率明顯增(zēng)大(dà),高轉速加(jiā)速了轉子(zǐ)與定子間的(de)磨耗,必定使螺杆泵過(guò)早失(shī)效,而且高轉速螺杆(gǎn)泵的(de)定轉子(zǐ)長度(dù)很(hěn)短,極易磨(mó)損,因(yīn)而縮短(duǎn)了螺杆(gǎn)泵的使用壽命(mìng)。通過減速機或(huò)無級調速機構來降(jiàng)低(dī)轉(zhuǎn)速,使(shǐ)勘轉速保持在(zài)每分(fèn)三百轉以(yǐ)下(xià)較(jiào)為合(hé)理的(de)範圍内,與高速運轉的螺杆泵(bèng)相比,使(shǐ)用壽命能延長(zhǎng)幾(jǐ)倍。

    2.螺杆泵的品質:現(xiàn)在市場上的螺(luó)杆泵的種類較(jiào)多,相對(duì)而言,進口的螺杆泵設(shè)計合理,材質精(jīng)良,但(dàn)價格(gé)較高(gāo),服務方面(miàn)有的(de)不到位,配件價(jià)格高,訂貨(huò)周期(qī)長,可能影響生(shēng)産的正常(cháng)運行(háng)。國内生産的大都仿制進口産(chǎn)品,産品質量良莠不(bú)齊,在(zài)選用(yòng)國内生産的産品時,在考(kǎo)慮其(qí)性價比的時候(hòu),選用(yòng)低轉速,長導程(chéng),傳動量部(bù)件材質優良,額(é)定壽(shòu)命(mìng)長的産品。

    3.确保雜(zá)物不(bú)進入泵體:濕污(wū)泥中混入的固(gù)體雜物會對螺(luó)杆泵的橡(xiàng)膠材質定子(zǐ)造成損(sǔn)壞,所以确(què)保雜物不(bú)進入泵的(de)腔體是很(hěn)重要的,很多污水廠(chǎng)在泵前加裝了(le)粉碎(suì)機(jī),也有的(de)安裝格栅裝置(zhì)或濾(lǜ)網,阻(zǔ)擋雜(zá)物進入螺杆泵(bèng),對于格栅應及(jí)時清(qīng)撈(lāo)以(yǐ)免造(zào)成堵塞(sāi)。

    4.保持恒(héng)定的出口壓力(lì):螺杆泵是一種(zhǒng)容積式(shì)回(huí)轉泵,當出(chū)口(kǒu)端(duān)受阻(zǔ)以後(hòu),壓力(lì)會逐(zhú)漸升(shēng)高(gāo),以至于(yú)超過預定(dìng)的壓(yā)力值(zhí).此(cǐ)時(shí)電機(jī)負荷急劇(jù)增加.傳動(dòng)機械相關(guān)零件的負載(zǎi)也(yě)會超出設(shè)計值(zhí),嚴重時(shí)會(huì)發生電機燒毀,傳動(dòng)零件斷裂(liè).為了(le)避免螺(luó)杆泵損(sǔn)壞,一般會在三螺杆(gǎn)泵(bèng)出口處(chù)安裝(zhuāng)旁(páng)通(tōng)溢流閥,用(yòng)以穩定出(chū)口壓力,保持泵的正常運轉。

    5.避(bì)免斷(duàn)料:三(sān)螺杆泵決(jué)不(bú)允許在(zài)斷料(liào)的情形下運轉(zhuǎn),一經(jīng)發生,橡膠定子(zǐ)由于幹磨(mó)擦(cā),瞬間産(chǎn)生高溫而(ér)燒壞(huài),所以(yǐ),粉碎(suì)機完(wán)好,格栅暢(chàng)通是螺杆泵正常運(yùn)轉的必(bì)要條件(jiàn)之一(yī),為此,有些螺杆泵還在泵(bèng)身上(shàng)安(ān)裝了斷(duàn)料停(tíng)機裝置,當發生(shēng)斷(duàn)料時,由于螺(luó)杆泵(bèng)其有自吸(xī)功能的特(tè)性,腔體内會産(chǎn)生真空,真空裝(zhuāng)置會使螺杆泵(bèng)停止(zhǐ)運轉(zhuǎn)。

●螺杆(gǎn)磨損五(wǔ)點原因(yīn):

    1、每種(zhǒng)塑料，都有(yǒu)一個理想塑化(huà)的加工溫度範(fàn)圍，應該控制料(liào)筒加(jiā)工溫度，使(shǐ)之接近(jìn)這(zhè)個溫(wēn)度範(fàn)圍。粒(lì)狀塑(sù)料從料(liào)鬥(dòu)進入料筒，首先(xiān)會到(dào)達加料段，在加(jiā)料段(duàn)必然會(huì)出(chū)現幹性磨擦，當(dāng)這些塑料受熱(rè)不足，熔融不均(jun1)時，很易造成料(liào)筒内(nèi)壁及螺杆(gǎn)表面磨損增大(dà)。同樣，在壓縮段和均(jun1)化段，如果塑料的熔融狀态紊(wěn)亂不均，也(yě)會造成磨(mó)損增快。

    2、轉速(sù)應調校(xiào)得當(dāng)。由于(yú)部分塑料(liào)加有強化(huà)劑，如玻璃(lí)纖維(wéi)、礦物(wù)質或其他填充料。這些物(wù)質對金屬材質的(de)磨擦(cā)力(lì)往往(wǎng)比熔融塑(sù)料的(de)大得多。在注塑這些(xiē)塑(sù)料時，如果用(yòng)高的轉速成(chéng)，則在提高對(duì)塑料的(de)剪切(qiē)力的同(tóng)時，亦将令(lìng)強化(huà)相應(yīng)地産(chǎn)生更多被(bèi)撕碎(suì)的纖維(wéi)，被(bèi)撕碎(suì)的纖維含(hán)有鋒(fēng)利末端，令(lìng)磨損(sǔn)力大(dà)為增加。無(wú)機礦(kuàng)物質(zhì)在金屬表面(miàn)高速滑(huá)行時，其刮削作(zuò)用也不小。所以(yǐ)轉速不宜調得太高(gāo)。

    3、螺(luó)杆在機(jī)筒内轉動(dòng)，物料(liào)與二者的摩擦，使螺杆與(yǔ)機筒(tǒng)的工作(zuò)表面逐漸磨(mó)損：螺杆直(zhí)徑逐漸(jiàn)縮小，機(jī)筒的内(nèi)孔(kǒng)直徑(jìng)逐漸(jiàn)加大(dà)。這樣(yàng)，螺杆與機筒的配合直徑間隙(xì)，随(suí)着二者的逐(zhú)漸磨損而一(yī)點(diǎn)點加大。可是，由(yóu)于機筒(tǒng)前面機(jī)頭和(hé)分流闆的(de)阻(zǔ)力(lì)沒有改變(biàn)，這就增加了(le)被(bèi)擠塑物料(liào)前進(jìn)時的(de)漏(lòu)流量，即物料(liào)從直徑間(jiān)隙處向進料方(fāng)向流(liú)動量增加(jiā)。結果使塑膠機(jī)械生産量(liàng)下降(jiàng)。這種現象又使物(wù)料(liào)在機筒内(nèi)停留時間增(zēng)加，造成物料(liào)分解。如果是聚(jù)乙烯，分解産生的氯(lǜ)化氫氣體(tǐ)加強(qiáng)了對(duì)螺杆(gǎn)和機筒的(de)腐蝕。

    4、 物料(liào)中如(rú)有(yǒu)碳(tàn)酸鈣(gài)和玻(bō)璃纖(xiān)維等填(tián)充料，能加快(kuài)螺杆和(hé)機(jī)筒的磨損。

    5、 由于物料(liào)沒有塑(sù)化(huà)均勻(yún)，或是(shì)有金(jīn)屬異物(wù)混入料(liào)中，使(shǐ)螺杆轉動扭矩力突然增(zēng)加，這(zhè)種扭矩超出螺(luó)杆的強度(dù)極限，使(shǐ)螺杆扭(niǔ)斷。這(zhè)是一種非(fēi)常規事故損(sǔn)壞。