●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(yóu)類(lèi)最(zuì)合适(shì)，允許(xǔ)按泵的(de)最高工(gōng)作壓力使(shǐ)用。2、輸(shū)送40mm2/s以下的(de)油類(lèi)，為保證泵(bèng)的流(liú)量及壽命(mìng)應降(jiàng)壓使(shǐ)用。3、輸送150mm2/s以(yǐ)上的(de)油類，且進油管道(dào)過長，彎(wān)頭過(guò)多，泵工作時(shí)如(rú)産(chǎn)生噪音(yīn)或振動現象，則應考慮更換低(dī)一級轉(zhuǎn)速(sù)的電機運轉(zhuǎn)或縮短(duǎn)吸入管(guǎn)道(dào)，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)泵安裝要(yào)求:3 g type three-screw pump installation requirements:

    1、安(ān)裝前應檢(jiǎn)查泵(bèng)的油封是否良(liáng)好，并檢(jiǎn)查泵在(zài)運輸中(zhōng)是(shì)否損(sǔn)壞，可(kě)用手(shǒu)轉動(dòng)聯軸(zhóu)器是否有(yǒu)卡勁(jìn)現象，如有(yǒu)則應拆泵進行(háng)清洗，修理(lǐ)和校正。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)油和排油管道時，其管徑不得(dé)小(xiǎo)于泵的進油(yóu)和出(chū)油口口徑，進油管道(dào)不得過長(zhǎng)，彎頭不得(dé)過多，否則将影響泵的工作狀(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、當有(yǒu)兩(liǎng)台以上的泵安(ān)裝在(zài)同一(yī)條主(zhǔ)管線(xiàn)上，為便于(yú)泵的(de)啟動，在近泵的(de)排油管上(shàng)必須(xū)安裝(zhuāng)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)于在(zài)較(jiào)高(gāo)溫度(dù)（指60℃以(yǐ)上）下(xià)輸送(sòng)粘度(dù)大的(de)油類(lèi)（如：重(zhòng)油）的備用泵，必須是熱備用泵(bèng)，否(fǒu)則泵在(zài)低溫(wēn)下啟(qǐ)動會(huì)造成電機過載(zǎi)或泵(bèng)損壞。（建(jiàn)議(yì)在靠(kào)近泵的排(pái)油管上的逆止(zhǐ)閥旁(páng)，并聯安裝(zhuāng)一個小回流閥(fá)，對備用泵可微(wēi)啟回流(liú)閥，使泵(bèng)緩慢(màn)逆轉，其逆(nì)轉速≤100轉(zhuǎn)/分，使部(bù)分熱油經常流(liú)過泵内，達到泵熱備用(yòng)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(shū)送介(jiè)質内含有(yǒu)機械雜質。将嚴(yán)重影(yǐng)響泵(bèng)的運(yùn)轉和降低使用(yòng)壽命，因此在泵安裝(zhuāng)前，必須仔(zǎi)細清除進油管内的焊渣，沙粒(lì)等雜質，并(bìng)應在進油(yóu)管道靠近(jìn)泵處(chù)安裝濾器，濾器(qì)網孔(kǒng)大小(xiǎo)，可根(gēn)據工(gōng)作情況及(jí)介(jiè)質粘(zhān)度(dù)确定。（一般可用40~80目網(wǎng)），過(guò)濾面積(jī)一般不得小于進油(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、盡量在(zài)泵進油和排油(yóu)口處的(de)螺紋孔上連接壓(yā)力表(biǎo)和(hé)真空表(biǎo)，以便于觀察泵的運(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(jī)與泵的轉軸必(bì)須在同一(yī)中心線上(shàng)，可用直尺(chǐ)測隙規在(zài)聯(lián)軸器圓周上間隔90°處檢查(chá)。8、原(yuán)動機與泵的轉(zhuǎn)向必(bì)須(xū)一緻(zhì)，嚴格禁(jìn)止原(yuán)動(dòng)機驅動(dòng)泵逆轉。電機接(jiē)線時，應先脫開(kāi)電機與泵的聯(lián)軸器(qì)，對電機作(zuò)試運(yùn)轉。使其轉(zhuǎn)向與泵的(de)轉向标志一(yī)緻(zhì)。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)三螺杆(gǎn)泵的使用

　　1、泵(bèng)啟動前，必(bì)須全(quán)開進油和(hé)排油閘閥。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、首次啟動泵(bèng)或(huò)再次使用長期封存的泵時，泵(bèng)内無(wú)介質(zhì)，應(yīng)在泵的(de)進油腔灌(guàn)注适(shì)量輸送介質，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)注意電流表(biǎo)，壓(yā)力表(biǎo)和真(zhēn)空表(biǎo)的數值(zhí)，超(chāo)出規定值(zhí)時，應停泵(bèng)找出(chū)原(yuán)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、軸封處點滴(dī)洩露(lù)，應屬(shǔ)正常(cháng)現(xiàn)象(xiàng)，當洩露量大量增加(jiā)時(shí)，對軟填(tián)料密(mì)封應壓緊填料(liào)壓蓋，對機械密(mì)封應停泵修複後，再行啟動。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(qì)清掃管線時，應避免(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(guǒ)泵長(zhǎng)期不工(gōng)作(zuò)時，應(yīng)進行油封(fēng)，并定(dìng)期檢查(chá)油(yóu)封情況，必要(yào)時(shí)重新(xīn)油封。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(sān)螺杆泵(bèng)特點(diǎn)及優(yōu)點：

　　（1）壓(yā)力和流量(liàng)範圍(wéi)寬闊(kuò)，流量範圍(wéi)0.2～320m3/h最高工作(zuò)壓力(lì)可達(dá)5mpa；（2）運送液體(tǐ)的種類和(hé)粘度範(fàn)圍(wéi)寬廣,粘度(dù)範圍1mm2/s-760mm2/s；（3）因為三螺(luó)杆泵(bèng)内的回轉部件慣(guàn)性力較(jiào)低，故(gù)可使用很(hěn)高(gāo)的轉(zhuǎn)速；（4）吸入(rù)性能好，具有很(hěn)強的自吸能力；（5）流量(liàng)均勻連續，振動小，噪音低(dī)，幾(jǐ)乎沒有(yǒu)脈動(dòng)；（6）三螺杆泵結構堅實，安(ān)裝方便(biàn)有(卧式、立(lì)式、法(fǎ)蘭式、插裝式）保(bǎo)養容(róng)易；（7）三螺杆(gǎn)泵具有很強的(de)耐熱(rè)性(xìng)，一(yī)般工(gōng)作溫度是（1~250°c)超過(guò)此溫度需特制(zhì)；（8）根據(jù)所輸(shū)送介(jiè)質需要還(hái)可提(tí)供加(jiā)熱(rè)或冷卻(què)結構；（9）三螺(luó)杆泵(bèng)幾乎(hū)沒有磨損(sǔn)，三(sān)螺杆泵隻要(yào)選型(xíng)正确，使用(yòng)壽命長。（10）三螺杆(gǎn)泵的(de)工作效率(lǜ)高。

●三(sān)螺杆泵注意事項

    1.三(sān)螺杆(gǎn)泵的(de)轉速(sù)選用:三螺(luó)杆泵的流量與轉速成線(xiàn)性關系,相(xiàng)對于(yú)低轉(zhuǎn)速的(de)螺杆泵,高轉速的螺(luó)杆泵雖然(rán)能增(zēng)加了(le)流量和揚程,但(dàn)功率明顯(xiǎn)增(zēng)大(dà),高(gāo)轉速加(jiā)速了轉子與定(dìng)子間的磨耗,必(bì)定使(shǐ)螺杆泵過(guò)早失效,而且高(gāo)轉速螺(luó)杆泵的(de)定轉子長度很(hěn)短,極易磨(mó)損,因(yīn)而縮短(duǎn)了螺杆(gǎn)泵的(de)使用壽命(mìng)。通過減速機或(huò)無級調速機構(gòu)來降低轉(zhuǎn)速,使(shǐ)勘轉(zhuǎn)速保持在(zài)每分(fèn)三百(bǎi)轉以(yǐ)下較為合(hé)理的(de)範圍(wéi)内,與高(gāo)速(sù)運轉(zhuǎn)的(de)螺(luó)杆泵(bèng)相比,使(shǐ)用壽命能延(yán)長(zhǎng)幾倍。

    2.螺杆泵(bèng)的品質:現(xiàn)在市場上(shàng)的(de)螺杆泵的種類較(jiào)多,相對而(ér)言,進口的螺杆(gǎn)泵設(shè)計(jì)合理(lǐ),材(cái)質精(jīng)良,但價格較(jiào)高(gāo),服務方面(miàn)有的(de)不到(dào)位(wèi),配件價(jià)格高(gāo),訂(dìng)貨周期(qī)長,可能影(yǐng)響生(shēng)産的正常運行。國内(nèi)生(shēng)産的大(dà)都仿制進(jìn)口産(chǎn)品,産品(pǐn)質量良(liáng)莠(yǒu)不齊(qí),在選用國内(nèi)生(shēng)産的産品時,在(zài)考(kǎo)慮其(qí)性價比的時候(hòu),選用低轉速,長導程,傳(chuán)動量部(bù)件材質優(yōu)良,額(é)定壽(shòu)命長的産(chǎn)品。

    3.确保雜(zá)物不(bú)進入(rù)泵(bèng)體:濕污(wū)泥中混(hùn)入的固(gù)體雜(zá)物會對螺(luó)杆泵(bèng)的橡(xiàng)膠材質定(dìng)子造成損(sǔn)壞,所(suǒ)以(yǐ)确保雜物不進入泵的(de)腔體(tǐ)是很(hěn)重要的,很多污水廠(chǎng)在泵前加(jiā)裝了(le)粉碎(suì)機,也有的(de)安裝格(gé)栅裝置或濾網,阻擋雜(zá)物進入螺杆泵(bèng),對于格栅應及(jí)時清(qīng)撈以免造(zào)成堵(dǔ)塞。

    4.保(bǎo)持恒(héng)定的出口(kǒu)壓力(lì):螺杆(gǎn)泵(bèng)是(shì)一種(zhǒng)容積式回(huí)轉泵,當出(chū)口(kǒu)端受阻(zǔ)以後,壓(yā)力(lì)會逐(zhú)漸升高,以至于超過預定的壓力值(zhí).此時(shí)電機(jī)負荷急劇(jù)增加(jiā).傳動機械相關(guān)零件的負(fù)載也(yě)會超(chāo)出(chū)設計值(zhí),嚴重時會(huì)發生(shēng)電機(jī)燒毀(huì),傳動(dòng)零件斷(duàn)裂.為了避免螺杆泵損(sǔn)壞,一(yī)般會(huì)在三(sān)螺杆(gǎn)泵出口處(chù)安裝(zhuāng)旁通溢流(liú)閥,用以穩定出(chū)口壓(yā)力,保持泵的正(zhèng)常運轉。

    5.避(bì)免斷料:三螺杆(gǎn)泵決(jué)不允(yǔn)許在(zài)斷料的情(qíng)形下(xià)運轉,一經發生(shēng),橡膠定子(zǐ)由于幹磨(mó)擦(cā),瞬(shùn)間産(chǎn)生高溫而(ér)燒壞(huài),所以(yǐ),粉碎機完(wán)好,格栅暢通是(shì)螺杆泵正(zhèng)常運(yùn)轉的必要(yào)條件之一,為(wéi)此,有些(xiē)螺杆泵還(hái)在泵(bèng)身上(shàng)安裝了斷(duàn)料停(tíng)機(jī)裝(zhuāng)置,當(dāng)發生斷料時,由(yóu)于螺(luó)杆泵其有(yǒu)自吸(xī)功能(néng)的特(tè)性,腔(qiāng)體内會産(chǎn)生真空(kōng),真(zhēn)空裝(zhuāng)置會使螺(luó)杆泵(bèng)停止運轉。

●螺杆(gǎn)磨損五點原因(yīn):

    1、每種塑(sù)料，都有(yǒu)一個理想塑化(huà)的加(jiā)工(gōng)溫度範(fàn)圍，應(yīng)該控制料(liào)筒(tǒng)加(jiā)工溫度，使(shǐ)之接近這個溫度範(fàn)圍(wéi)。粒狀塑(sù)料從料鬥(dòu)進入(rù)料筒(tǒng)，首先會到(dào)達(dá)加料(liào)段，在加(jiā)料段必然會(huì)出(chū)現幹性磨(mó)擦，當(dāng)這些塑料受熱(rè)不足，熔融不均(jun1)時，很(hěn)易(yì)造(zào)成料(liào)筒内壁(bì)及螺杆(gǎn)表面磨損增大。同樣，在(zài)壓(yā)縮段(duàn)和均化(huà)段，如果(guǒ)塑料的熔(róng)融狀(zhuàng)态紊(wěn)亂不均，也(yě)會造成磨(mó)損增(zēng)快。

    2、轉(zhuǎn)速應調校(xiào)得當。由(yóu)于部分(fèn)塑料加(jiā)有強化(huà)劑，如玻璃纖維(wéi)、礦物(wù)質或(huò)其他(tā)填充(chōng)料。這些物質對金屬材質(zhì)的磨擦力往往(wǎng)比熔融塑料的大得多。在注塑(sù)這些(xiē)塑料(liào)時，如(rú)果用高的轉速(sù)成，則(zé)在提高對(duì)塑料的(de)剪(jiǎn)切力(lì)的同時，亦将令強化相應(yīng)地産(chǎn)生更(gèng)多被撕碎(suì)的(de)纖維，被(bèi)撕碎的纖維含有(yǒu)鋒(fēng)利末端(duān)，令(lìng)磨損力大(dà)為增加。無機礦物質在金(jīn)屬表面高速滑(huá)行時(shí)，其刮(guā)削(xuē)作(zuò)用也(yě)不小。所以(yǐ)轉速不宜調得太高。

    3、螺杆在機(jī)筒内轉動(dòng)，物料與二(èr)者的摩擦(cā)，使螺(luó)杆與機筒(tǒng)的工作(zuò)表面逐(zhú)漸磨(mó)損：螺(luó)杆直(zhí)徑逐(zhú)漸縮(suō)小，機(jī)筒的内(nèi)孔(kǒng)直(zhí)徑(jìng)逐漸加大。這樣(yàng)，螺杆(gǎn)與機筒的(de)配合直徑間隙(xì)，随着二者的逐(zhú)漸磨損而一點點加大。可是，由(yóu)于機筒前面機頭和分流(liú)闆的阻力沒有改變(biàn)，這就增加了被擠塑(sù)物料(liào)前進(jìn)時的漏(lòu)流量，即(jí)物料(liào)從(cóng)直徑間(jiān)隙處向進(jìn)料方向流動量增加(jiā)。結果使塑(sù)膠機械生産量(liàng)下降(jiàng)。這種現象(xiàng)又使物料(liào)在機(jī)筒内(nèi)停留(liú)時間增(zēng)加(jiā)，造成物料(liào)分解(jiě)。如果是聚乙烯(xī)，分解(jiě)産生的氯(lǜ)化氫氣體(tǐ)加強(qiáng)了對螺杆和機筒的腐(fǔ)蝕(shí)。

    4、 物料(liào)中如(rú)有(yǒu)碳酸鈣和玻(bō)璃(lí)纖(xiān)維等填充料，能加快(kuài)螺杆和(hé)機筒的(de)磨損(sǔn)。

    5、 由于物料(liào)沒有塑化均勻(yún)，或是有金屬異(yì)物混入(rù)料(liào)中，使螺杆(gǎn)轉動扭矩(jǔ)力突然增(zēng)加，這(zhè)種扭(niǔ)矩超出螺(luó)杆的強度極限(xiàn)，使螺杆扭斷。這(zhè)是一種非常規(guī)事故損壞(huài)。