●3G三(sān)螺杆泵輸送各(gè)種油類時應注(zhù)意事項：When conveying various oil matters should be paid attention to:

    1、輸送40~150mm2/s的(de)油類最合适，允(yǔn)許按泵的最高(gao)工作壓力使用(yong)。2、輸送40mm2/s以下的油(you)類，為保證泵的(de)流量及壽命應(yīng)降壓使用。3、輸送(song)150mm2/s以上的油類，且(qie)進油管道過長(zhang)，彎頭過多，泵工(gōng)作時如🐇産生噪(zao)音或振動現象(xiang)，則應考慮更換(huàn)低一級轉速的(de)📞電機運轉或縮(suō)短吸入管道，減(jiǎn)少彎頭。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(luó)杆泵安裝要求(qiú):3 g type three-screw pump installation requirements:

    1、安裝前應檢查(cha)泵的油封是否(fǒu)良好，并檢查泵(bèng)在運輸中🌈是否(fou)損壞，可用手轉(zhuan)動聯軸器是否(fou)有卡勁現象，如(ru)有則應拆泵進(jìn)行清洗，修理和(hé)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、安裝泵的(de)進油和排油管(guan)道時，其管徑不(bu)得小于泵的進(jin)油和⭐出油口口(kǒu)徑，進油管道不(bú)得過長，彎頭不(bú)得過⭐多，否則将(jiāng)影響泵的工作(zuo)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、當有兩台(tái)以上的泵安裝(zhuāng)在同一條主管(guan)線上，為便于泵(beng)的啟動，在近泵(bèng)的排油管上必(bì)須安裝逆止閥(fa)。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、對于在較高溫(wen)度（指60℃以上）下輸(shu)送粘度大的油(yóu)類（如：重油）的備(bèi)用泵，必須是熱(re)備用泵，否則泵(bèng)在低溫下啟動(dòng)會造成電機過(guò)載或泵損壞。（建(jian)🔞議在靠近泵的(de)排油管上的逆(nì)止閥🌈旁，并聯安(ān)裝一個小回流(liu)閥，對備用泵可(kě)微啟回流閥，使(shi)泵緩慢逆轉，其(qi)🐆逆轉速≤100轉/分，使(shi)部分熱油經常(cháng)流過泵内，達到(dào)泵熱備用目的(de)）。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、輸送介質内含(han)有機械雜質。将(jiāng)嚴重影響泵的(de)運轉和降低使(shi)用壽命，因此在(zai)泵安裝前，必須(xū)仔細清除進油(yóu)管内📐的焊渣，沙(shā)粒等雜質，并應(ying)在進油管道靠(kao)近泵處安裝濾(lǜ)器，濾器網孔大(da)小，可根據工作(zuo)情況及介質粘(zhan)🈲度确定。（一般可(kě)用40~80目網），過濾面(miàn)積一般不得小(xiǎo)于進油管橫截(jie)面積的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(liang)在泵進油和排(pai)油口處的螺紋(wen)孔上連接壓力(lì)表和真空表🚩，以(yǐ)便于觀察泵的(de)運轉狀态。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(dòng)機與泵的轉軸(zhou)必須在同一中(zhong)心線上，可用直(zhi)尺測🈲隙規在聯(lian)軸器圓周上間(jian)隔90°處檢查。8、原動(dòng)機與泵的轉向(xiàng)必須一緻，嚴格(gé)禁止原動機驅(qū)動泵🧑🏾‍🤝‍🧑🏼逆轉✨。電🌈機(jī)接線時，應先脫(tuō)開電機與泵的(de)聯軸器，對電機(jī)作試運轉💋。使其(qi)轉向與泵的轉(zhuan)向标志一緻。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.

●3G型三螺杆泵的(de)使用

　　1、泵啟動前(qian)，必須全開進油(yóu)和排油閘閥。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(shǒu)次啟動泵或再(zài)次使用長期封(fēng)存的泵時，泵内(nèi)無介質👉，應在泵(beng)的進油腔灌注(zhu)适量輸送介質(zhì)，避免泵💘幹啟動(dòng)。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、泵啟動後，應密(mi)切注意電流表(biao)，壓力表和真空(kong)表的數值，超出(chū)規定值時，應停(ting)泵找出原因後(hòu)，再行啟動。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(fēng)處點滴洩露，應(ying)屬正常現象，當(dāng)洩露量大量增(zēng)加🏒時♉，對🔴軟填料(liào)密封應壓緊填(tián)料壓蓋，對機械(xiè)密封應停🌈泵修(xiū)🥵複後，再行啟動(dòng)。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、用高溫蒸汽清(qing)掃管線時，應避(bi)免高溫蒸汽通(tong)過泵💋内。5, with high temperature steam cleaning pipeline, should avoid high temperature steam through the pump.6、如果泵(bèng)長期不工作時(shi)，應進行油封，并(bing)定期檢查油👉封(fēng)情況，必☀️要時重(zhong)新油封。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.

●三螺杆(gǎn)泵特點及優點(dian)：

　　（1）壓力和流量範(fan)圍寬闊，流量範(fàn)圍0.2～320m3/h最高工作壓(yā)力可達5MPa；（2）運送液(ye)體的種類和粘(zhān)度範圍寬廣,粘(zhan)度範圍1mm2/s-760mm2/s；（3）因為三(sān)螺杆泵内的回(huí)轉部件慣性力(lì)較低，故可使用(yòng)很高的轉✌️速；（4）吸(xi)入性能好，具有(you)很強的自吸能(néng)力；（5）流量均勻連(lián)續，振動小，噪音(yīn)低，幾乎沒有脈(mò)動；（6）三螺杆泵結(jie)構堅實，安裝方(fāng)便有(卧式、立式(shì)、法蘭式、插裝式(shì)）保養容易；（7）三螺(luo)杆泵具有很強(qiáng)的耐熱性，一般(ban)工作溫度是（1~250°C)超(chāo)過此溫度需特(tè)制；（8）根據所輸送(song)介質需要還可(ke)提供加熱或冷(lěng)卻結構；（9）三螺杆(gǎn)泵幾乎沒有磨(mo)損，三螺杆泵隻(zhi)要選型正确，使(shi)用壽命長。（10）三螺(luo)杆泵的工作效(xiào)率高。

●三螺杆泵(bèng)注意事項

    1.三螺(luó)杆泵的轉速選(xuan)用:三螺杆泵的(de)流量與轉速成(chéng)線性關系,相對(dui)于低轉速的螺(luó)杆泵,高轉速的(de)螺杆泵雖然能(neng)增加了流量和(hé)揚程,但功率明(míng)顯增大,高轉速(sù)加速了轉子與(yu)定子間的磨耗(hào),必定使螺杆泵(bèng)過早失效,而且(qiě)高轉速螺杆泵(bèng)的定轉子長度(dù)很短,極易磨損(sun),因而縮短了螺(luo)杆泵的使用壽(shòu)命。通過減速機(ji)或無級調速機(jī)構來降低轉速(sù),使勘轉速保持(chí)在每分三百轉(zhuan)以下較為合理(li)的範圍内,與高(gāo)速運轉的螺杆(gan)泵相比,使用壽(shou)命能延長幾倍(bèi)。

    2.螺杆泵的品質(zhì):現在市場上的(de)螺杆泵的種類(lèi)較多,相對而言(yán),進口的螺杆泵(bèng)設計合理,材質(zhi)精良,但價格較(jiao)高,服務方面有(yǒu)的不到位,配件(jian)價格高,訂貨周(zhou)期長,可能影響(xiang)生産的正常運(yùn)行。國内生産的(de)大都仿制進✌️口(kǒu)産品,産品質量(liàng)良莠不齊,在選(xuan)用國内生産的(de)産品時,在考慮(lü)其性價比的時(shí)候,選用低轉速(su),長導程,傳動量(liang)部件材質優良(liáng),額定壽命長的(de)産品。

    3.确保雜物(wu)不進入泵體:濕(shi)污泥中混入的(de)固體雜物會對(dui)螺杆泵的橡膠(jiao)材質📞定子造成(cheng)損壞,所以确保(bao)雜物不進入泵(beng)的腔體是很重(zhòng)要的,很多污水(shuǐ)廠在泵前加裝(zhuāng)了粉碎機,也有(you)的安裝格栅裝(zhuang)置或濾網,阻擋(dang)雜物進入螺杆(gǎn)泵,對于格栅應(ying)及時清撈以免(mian)造成堵塞。

    4.保持(chí)恒定的出口壓(yā)力:螺杆泵是一(yī)種容積式回轉(zhuan)泵,當出口端受(shòu)阻以後,壓力會(hui)逐漸升高,以至(zhì)于超過預定的(de)壓力值.此時電(dian)機負荷急劇增(zēng)加.傳動機械相(xiang)關零件的負載(zǎi)也會超出設計(ji)值,嚴重時會發(fā)生電機燒毀,傳(chuán)動零件斷裂.為(wei)了避免螺杆泵(beng)損壞,一般會在(zai)三螺杆泵出口(kou)處安裝旁通溢(yì)流閥,用以穩定(ding)出口壓力,保持(chi)泵的正常運轉(zhuǎn)。

    5.避免斷料:三螺(luo)杆泵決不允許(xǔ)在斷料的情形(xing)下運轉,一經發(fā)生,橡膠定子由(yóu)于幹磨擦,瞬間(jiān)産生高溫而燒(shāo)壞,所以,粉碎機(jī)完好,格栅暢通(tong)是螺杆泵正常(chang)運轉的必要條(tiao)件之一,為此,有(yǒu)些螺杆泵還在(zài)泵身上安裝了(le)斷料停機裝置(zhi),當發生斷料時(shi),由于螺杆泵其(qi)有自吸功能的(de)特性,腔體内會(hui)産生真空,真空(kōng)裝置會使螺杆(gǎn)泵停止運轉。

●螺(luó)杆磨損五點原(yuan)因:

    1、每種塑料，都(dou)有一個理想塑(sù)化的加工溫度(dù)範圍，應該控制(zhi)💃料🧑🏽‍🤝‍🧑🏻筒🙇‍♀️加工溫度(dù)，使之接近這個(gè)溫度範圍。粒狀(zhuàng)塑料從料鬥進(jin)入料筒，首先會(hui)到達加料段，在(zai)加料段必然會(huì)出❓現幹性磨擦(cā)，當這些塑料受(shòu)熱不足，熔融不(bu)均時，很易造成(cheng)料筒内壁及螺(luo)杆表面磨損增(zeng)大。同樣，在壓縮(suo)段和均化段，如(ru)果塑料的熔融(róng)狀态紊亂不均(jun)💋，也☀️會造成磨損(sun)增快。

    2、轉速應調(diao)校得當。由于部(bù)分塑料加有強(qiang)化劑，如玻璃纖(xiān)維、礦物質或其(qí)他填充料。這些(xie)物質對金屬材(cai)質的磨擦🌐力往(wang)往比熔融塑料(liào)的大得多。在注(zhu)塑這👈些塑料時(shí)，如果用高的轉(zhuǎn)速成，則在提高(gāo)對塑料的🔞剪切(qie)力的同時，亦将(jiāng)令強化相🐉應地(dì)産生更多被撕(si)碎的纖維，被撕(si)碎的纖維含有(yǒu)鋒利末端，令磨(mó)損力⭕大為增加(jiā)。無✏️機礦物質在(zài)金屬表面高速(su)滑行時，其刮削(xuē)作用也不小。所(suǒ)以轉速不宜調(diào)得太高。

    3、螺杆在(zai)機筒内轉動，物(wu)料與二者的摩(mó)擦，使螺杆與🔆機(ji)筒的👨‍❤️‍👨工作表面(mian)逐漸磨損：螺杆(gan)直徑逐漸縮小(xiao)，機筒的内孔直(zhi)徑逐漸✌️加大。這(zhe)樣，螺杆與機筒(tong)的配合直徑間(jiān)隙，随着二者的(de)逐漸磨損而一(yi)點點加大。可是(shì)，由于機筒前面(miàn)機頭和分流闆(pan)的阻力沒有改(gai)變🈚，這就增加了(le)😍被擠塑物料前(qián)進時的漏流量(liang)，即物料從直徑(jing)間隙處向進料(liao)方向流動量增(zēng)加。結果使塑🍉膠(jiāo)機械生✂️産量下(xia)降。這種現象又(yòu)使物料在機筒(tong)内❗停留時間增(zeng)加，造成物料分(fen)解。如果是聚乙(yi)烯，分解産生的(de)氯♍化氫氣體加(jiā)強了對螺杆和(hé)機筒的腐蝕。

    4、 物(wu)料中如有碳酸(suān)鈣和玻璃纖維(wéi)等填充料，能加(jiā)快螺杆🈲和機筒(tong)的磨損。

    5、 由于物(wù)料沒有塑化均(jun)勻，或是有金屬(shu)異物混入料中(zhong)，使螺杆轉動扭(niu)矩力突然增加(jiā)，這種扭矩超出(chu)螺杆的強度🥵極(jí)限，使螺杆扭斷(duan)。這是一種非常(chang)規事故損壞。