nyp泵是容積(jī)式内(nèi)齧合齒輪泵，主(zhǔ)動齒(chǐ)輪（外轉子(zǐ)）帶(dài)動被動齒輪（内轉(zhuǎn)子）旋轉時(shí)，不斷産生封閉(bì)的空(kōng)間(jiān)，在吸油區齒(chǐ)輪(lún)逐漸脫(tuō)離齧合而液體(tǐ)不斷地充(chōng)滿齒(chǐ)間并被帶(dài)到出(chū)油區，齒輪在出(chū)油區進(jìn)入(rù)齧合(hé)時液(yè)體被排出(chū)。兩個(gè)旋轉齒輪(lún)的共同作用，形成一個穩定的(de)體積排量(liàng)，沒有脈(mò)動(dòng)。由于(yú)泵是(shì)完全對稱(chēng)的，泵(bèng)可以反(fǎn)轉，液流(liú)方向也(yě)随之改變。但(dàn)應注意，泵(bèng)的轉向可能受(shòu)到密封或(huò)泵内(nèi)其它(tā)結構的限制，用戶有(yǒu)反轉(zhuǎn)要求時應在訂貨時(shí)做出說明(míng)
    該(gāi)泵(bèng)的(de)流(liú)量可(kě)根據液體粘度(dù)選(xuǎn)擇合适(shì)的轉(zhuǎn)速(sù)來(lái)調整。由(yóu)于泵(bèng)的(de)流量取決(jué)于單轉排(pái)量和旋(xuán)轉(zhuǎn)速度(dù)，單轉(zhuǎn)排(pái)量是泵(bèng)軸旋轉(zhuǎn)360度的體(tǐ)積排量，實(shí)際上，單轉排量(liàng)是在進出口壓(yā)差為(wéi)零時泵轉一周的(de)流(liú)量。各(gè)種規格的泵因(yīn)為幾(jǐ)何尺寸已(yǐ)定，隻(zhī)有(yǒu)通過改變轉(zhuǎn)速(sù)來調整(zhěng)流量。轉(zhuǎn)速可由改變(biàn)馬(mǎ)達的轉(zhuǎn)速或減(jiǎn)速(sù)機(jī)的(de)速比而改變，也(yě)可用變(biàn)速馬達(dá)或可(kě)變速減速(sù)機。

     該泵結(jié)構簡單，适用範(fàn)圍廣(guǎng)，可以(yǐ)輸送(sòng)高粘(zhān)度和低粘(zhān)度的(de)各種(zhǒng)液體(tǐ)，最(zuì)高輸送粘度(dù)可達500000cst。溫度範圍(wéi)自-40—300℃,輸送液體可(kě)有潤滑性也可(kě)以沒(méi)有潤滑性。由于内(nèi)外轉(zhuǎn)子(zǐ)齒數互為質數，任意兩齒(chǐ)之間(jiān)的機會相等，因此齒(chǐ)的磨(mó)損非(fēi)常均勻(yún)。    高粘度(dù)齒輪泵的(de)吸油(yóu)管道(dào)内徑應足(zú)夠大(dà)，并避(bì)免狹(xiá)窄(zhǎi)通道(dào)或急劇(jù)拐彎、減少彎(wān)頭(tóu)，去除不必(bì)要的閥門、附件，盡可能地降低泵的(de)安裝(zhuāng)高(gāo)度(dù)，縮短(duǎn)吸油管道的(de)長(zhǎng)度，以(yǐ)減少壓力(lì)損失。管(guǎn)接頭等元件(jiàn)的密(mì)封要(yào)良好，以防(fáng)止空(kōng)氣侵(qīn)入，從而控(kòng)制氣穴與(yǔ)氣蝕(shí)的發(fā)生(shēng)。止(zhǐ)回閥(fá)與安全閥(fá)在齒(chǐ)輪(lún)泵(bèng)的輸出管(guǎn)路上最好(hǎo)安裝(zhuāng)一個(gè)止回閥。這(zhè)樣在檢修(xiū)泵及輸出管道(dào)時，系(xì)統中的液體不(bú)會發(fā)生倒流。齒(chǐ)輪泵帶負荷停(tíng)車時，亦(yì)可(kě)防止泵倒轉而在其輸出(chū)管(guǎn)道内産(chǎn)生局部真(zhēn)空。應(yīng)當注意，出(chū)口止回閥不能(néng)裝反或出現(xiàn)卡死現(xiàn)象(xiàng)。高粘度泵的(de)出口(kǒu)管路(lù)上還應當設置(zhì)安全閥等保護裝置(zhì)，這樣一旦泵的出口通道發生(shēng)堵塞，就可(kě)以(yǐ)打(dǎ)開安(ān)全(quán)閥卸壓(yā)。安全閥可以與(yǔ)泵體或(huò)泵蓋鑄成(chéng)一(yī)體，也(yě)可以(yǐ)單獨裝配。對(duì)于需要正反(fǎn)轉的高粘度齒輪泵(bèng)，其進(jìn)出口管路上均(jun1)需設置安(ān)全閥。high viscosity gear pump oil suction pipe diameter should be large enough, and to avoid the narrow channel, or a sharp turn, reducing elbow, remove unnecessary valves, fittings, as much as possible to reduce the installation height of pump, shorten the length of the oil suction pipe, in order to reduce the pressure loss.components, such as pipe joint sealed well, in order to prevent the air intrusion, thus control air-pocket and the occurrence of cavitation.check valve and relief valve on the output of the gear pump tube had better install a check valve.in the overhaul pump and output pipe, the system of fluid backflow will not occur.gear pump to stop loading machine, can be in the output pipe to prevent pump reverse, and create a partial vacuum.it should be noted that the outlet check valve cannot be installed backwards or stuck.high viscosity of the pump outlet pipe also shall set up relief valve or other protective device on the road, so that once the clogging pump export channels, can open the relief valve pressure relief.the relief valve can be cast and pump body and pump cover, also can separate assembly.for high viscosity gear pump need positive &negative, import and export all needs to set up the line safety valve.

   高(gāo)粘度泵(bèng)是輸送高粘度(dù)液體的齒(chǐ)輪泵(bèng)，應做(zuò)到(dào)在較低的功耗、較少的洩漏(lòu)、較大(dà)的壓(yā)力下輸出最多(duō)的流(liú)量。在确定所要輸(shū)送(sòng)的介(jiè)質時(shí)，應該嚴格(gé)遵循産品說明書上的(de)規(guī)定，盡量使用廠家推(tuī)薦的(de)流體介質(zhì)，并注意考(kǎo)慮系(xì)統的工作(zuò)溫度(dù)範圍。當希望在(zài)某一較寬的溫(wēn)度範(fàn)圍内(nèi)使用時，輸(shū)送介質的(de)粘度指數(shù)應該(gāi)高些。輸(shū)送(sòng)介質(zhì)不僅是(shì)能(néng)量傳(chuán)遞的中介，而且(qiě)也是潤滑(huá)、密封(fēng)及傳(chuán)熱(rè)介質。液(yè)體粘(zhān)度過(guò)高會(huì)增加内摩(mó)擦阻(zǔ)力，降低輸(shū)出功率，浪費能量，并(bìng)産生過高的系(xì)統溫(wēn)度.高粘度(dù)齒輪泵(bèng)的出口管路(lù)上應當設(shè)置安(ān)全(quán)閥等保(bǎo)護裝置(zhì)，這樣一(yī)旦泵的(de)出(chū)口通(tōng)道發生堵塞，就(jiù)可以(yǐ)打開(kāi)安全(quán)閥(fá)卸壓。對于需(xū)要正反轉(zhuǎn)的高(gāo)粘度(dù)齒輪(lún)泵，其(qí)進出口管(guǎn)路上(shàng)均需設置(zhì)安全(quán)閥。high viscosity pump is conveying liquid with high viscosity gear pump, should be in lower power consumption, less leakage, under the pressure of large output the most traffic.when determining to conveying medium, we should strictly follow the provisions of the product manuals on use manufacturers recommend fluid as far as possible, and pay attention to consider the system operating temperature range.when you want to use in a wide temperature range, medium viscosity index should be higher.medium is not only the energy transfer intermediary, but also lubrication, sealing and heat transfer medium.liquid viscosity is too high will increase internal friction resistance, lower output power, waste of energy, and generate high temperature system. high viscosity gear pump outlet pipe shall set up relief valve or other protective device on the road, so once the clogging pump export channels, can open the relief valve pressure relief.for high viscosity gear pump need positive &negative, import and export all needs to set up the line safety valve.

    1、工作壓力的(de)選定(dìng)1, select the work pressure

　　高粘(zhān)度(dù)泵額定(dìng)的(de)壓(yā)力是指泵連(lián)續工作(zuò)時的最高(gāo)許用(yòng)壓力，而其工作(zuò)壓力則決定于外部(bù)負載，安裝(zhuāng)和調試(shì)的壽命(mìng)與其工作壓力(lì)直(zhí)接(jiē)相關(guān)。對于不頻(pín)繁(fán)工作的(de)齒輪泵，其工作(zuò)壓力(lì)可取為泵的額定壓(yā)力，考(kǎo)慮到産品質量(liàng)不同(tóng)，最好(hǎo)将額(é)定壓力降(jiàng)低20%～30%使(shǐ)用。對于經(jīng)常工(gōng)作于較高壓力下的齒(chǐ)輪泵，其(qí)工作壓力應比泵的額(é)定壓力(lì)低1～2個壓力(lì)級。石油化工設備常(cháng)常是24小時連續(xù)運轉(zhuǎn)，這時泵(bèng)的(de)工作(zuò)壓力(lì)應該(gāi)取得(dé)比額定壓(yā)力低得多，且工作轉速(sù)也(yě)應該(gāi)低于(yú)額定(dìng)轉速(sù)。如果高粘(zhān)度齒(chǐ)輪泵的工作壓(yā)力調整過高，則會使(shǐ)齒(chǐ)輪泵在(zài)超負荷下運行(háng)。high viscosity pump rated pressure refers to the maximum allowable pump continuous work pressure, and its working pressure is determined by the external load, installation and commissioning of life is directly related with work pressure.for not frequent work gear pump, the working pressure is desirable for the rated pressure of the pump, taking the quality into consideration, it is best to used pressure rated lower 20% ~ 30%.for often work under high pressure gear pump, the working pressure shall be lower than the rated pressure of the pump 1 ~ 2 pressure level.petrochemical equipment are often 24 hours of continuous operation, and at this time of the pump working pressure should be obtained was much lower than the rated pressure, and the work speed should be lower than the rated speed.if the high viscosity gear pump high pressure adjustment, will make the pump running under overload.

　　2.安裝(zhuāng)與試運轉(zhuǎn)2. installation and commissioning

　　高粘度泵的支(zhī)座或(huò)法蘭與其驅動(dòng)電機(jī)應采(cǎi)用共同的安(ān)裝(zhuāng)基礎，基礎(chǔ)、法蘭(lán)或支座(zuò)均需具(jù)有足夠(gòu)的剛度(dù)，以減(jiǎn)小(xiǎo)齒輪泵(bèng)運轉時産生的(de)振動和噪(zào)聲。電(diàn)動機與(yǔ)齒(chǐ)輪泵(bèng)須用彈性聯軸(zhóu)器連接，同軸度(dù)小于(yú)0.1毫米，傾斜(xié)角不得大(dà)于1度。安裝聯(lián)軸器時(shí)不得(dé)用錘敲打，以免(miǎn)傷害(hài)齒輪(lún)泵的(de)齒輪等零件。若用帶(dài)輪、鍊(liàn)輪等驅(qū)動時應設托(tuō)架(jià)支承，以(yǐ)防主(zhǔ)動齒輪軸(zhóu)承受(shòu)徑向力。緊(jǐn)固齒輪泵(bèng)、電動(dòng)機的(de)地腳螺釘(dìng)時，螺釘受力應均勻，連接(jiē)可靠(kào)。用手轉動(dòng)聯(lián)軸(zhóu)器時(shí)，應感(gǎn)覺到(dào)齒輪泵能夠輕松地轉(zhuǎn)動，沒有卡緊等異常現(xiàn)象出現，然(rán)後才可以配(pèi)管。高粘度齒輪泵(bèng)的吸(xī)油管(guǎn)道内徑應(yīng)足(zú)夠大，并避免(miǎn)狹窄通道或急劇拐彎、彎(wān)頭，去(qù)除不必(bì)要的閥(fá)門、附(fù)件，盡可能(néng)地降低泵(bèng)的安(ān)裝高(gāo)度(dù)，縮(suō)短吸(xī)油管道的(de)長度(dù)，以減少壓力損(sǔn)失。管(guǎn)接頭(tóu)等元(yuán)件的密封要良(liáng)好，以防止空氣(qì)侵入，從而控制(zhì)氣穴與氣(qì)蝕的(de)發生(shēng)。在開始運(yùn)轉前，往齒(chǐ)輪泵(bèng)的殼(ké)體内灌滿待輸(shū)送的(de)液體(tǐ)，便于安全(quán)動。若(ruò)環境溫度低于(yú)冰(bīng)點，應預先向(xiàng)泵内(nèi)通入(rù)熱蒸汽，進(jìn)行預熱處理，然後(hòu)才可啟(qǐ)動齒(chǐ)輪泵(bèng)。齒輪(lún)泵的旋轉(zhuǎn)方向(xiàng)要與進、出油(yóu)口相符。齒(chǐ)輪(lún)泵若是第一(yī)次運行，或長期閑(xián)置後再(zài)使用(yòng)，最好在(zài)空載或小負(fù)荷(hé)情況(kuàng)下(xià)先跑合(hé)一小時左右。如果在跑合(hé)階段(duàn)預(yù)先覺(jiào)出異常(cháng)溫升(shēng)、洩漏、振動(dòng)和噪聲時(shí)，應機檢查。高粘度泵(bèng)的出口管路上還應當設置安(ān)全閥等保護裝(zhuāng)置，這樣一旦泵(bèng)的出口通(tōng)道發(fā)生堵(dǔ)塞，就可以(yǐ)打開安全閥卸(xiè)壓。對于(yú)需要正(zhèng)反轉的高粘度齒輪(lún)泵，其進出(chū)口管路(lù)上均需設置(zhì)安(ān)全閥。high viscosity pump bearing or flange and its drive motor should use common installation basis, foundation, flange or support all needs to have enough rigidity, to reduce the vibration of gear pump is running and noise.motor and gear pump with elastic shaft coupling, coaxial degree is less than 0.1 mm, angle shall not be greater than 1 degree.when installing coupling hammer shall not be used, in order to avoid damage gear and other parts of the gear pump.if use the belt wheel, wheel, etc, shall set bracket support, in case of driving gear bearing by the radial force.ground screw fastening gear pump, motor, screw force should be uniform, reliable connection.turn the coupling with the hand, should feel can easily turn the gear pump, no abnormal phenomenon such as clamping, then can be piping.high viscosity gear pump oil suction pipe diameter should be large enough, and to avoid the narrow channel, or a sharp bend, bend, remove unnecessary valves, fittings, as much as possible to reduce the installation height of pump, shorten the length of the oil suction pipe, in order to reduce the pressure loss.components, such as pipe joint sealed well, in order to prevent the air intrusion, thus control air-pocket and the occurrence of cavitation.before starting operation, to gear pump casing filled with liquid, easy to safety.if the environment temperature is below freezing, should advance to pump into the hot steam, preheating treatment, and then to start the pump.direction of rotation of the gear pump, oil outlet in accord.gear pump is the first run, or long-term idle before using, had better under the condition of no load or small load to run one hour or so.if in the running-in stage in advance the abnormal temperature rise, leakage, vibration and noise, should machine inspection.high viscosity of the pump outlet pipe also shall set up relief valve or other protective device on the road, so that once the clogging pump export channels, can open the relief valve pressure relief.for high viscosity gear pump need positive &negative, import and export all needs to set up the line safety valve.