nyp泵是容(róng)積(jī)式内(nèi)齧合齒(chǐ)輪泵，主(zhǔ)動齒輪（外轉子(zǐ)）帶動被動齒輪(lún)（内轉子）旋(xuán)轉時(shí)，不斷(duàn)産生(shēng)封閉(bì)的空(kōng)間，在吸油(yóu)區齒(chǐ)輪逐漸脫(tuō)離齧(niè)合(hé)而液體(tǐ)不斷地充(chōng)滿齒間并(bìng)被帶(dài)到出(chū)油區，齒(chǐ)輪(lún)在出油區(qū)進入(rù)齧合時液(yè)體被排出(chū)。兩個旋轉齒輪(lún)的共同作用，形(xíng)成一(yī)個穩(wěn)定的(de)體積(jī)排量，沒有脈(mò)動。由于泵是(shì)完全對稱的，泵可以(yǐ)反轉，液流(liú)方向也随(suí)之改(gǎi)變。但(dàn)應注意，泵(bèng)的轉向可(kě)能受(shòu)到密封或泵内(nèi)其它(tā)結構的限制，用(yòng)戶(hù)有反轉要求時應在訂(dìng)貨時做出說明(míng)
    該泵(bèng)的流(liú)量可根據(jù)液體粘度選擇(zé)合适的轉(zhuǎn)速來調整。由(yóu)于(yú)泵的流量(liàng)取決于單轉(zhuǎn)排(pái)量和旋轉(zhuǎn)速度(dù)，單轉排(pái)量(liàng)是泵(bèng)軸旋轉360度(dù)的體積排量，實(shí)際上，單轉(zhuǎn)排量(liàng)是在進出(chū)口壓差為零時泵轉一周的流量。各(gè)種(zhǒng)規格的(de)泵因(yīn)為幾何(hé)尺寸已定，隻有通過改(gǎi)變轉(zhuǎn)速來調整(zhěng)流量。轉速(sù)可由改變馬達的轉(zhuǎn)速或減速機的(de)速比(bǐ)而(ér)改(gǎi)變，也(yě)可用(yòng)變(biàn)速馬達(dá)或可變速減速(sù)機。

     該泵結(jié)構簡(jiǎn)單，适用範圍廣(guǎng)，可(kě)以(yǐ)輸送高粘度和(hé)低粘(zhān)度的各種(zhǒng)液體，最高輸送粘度(dù)可達(dá)500000cst。溫度(dù)範圍(wéi)自-40—300℃,輸(shū)送液(yè)體可(kě)有潤滑(huá)性也可(kě)以沒(méi)有潤(rùn)滑性(xìng)。由于内外轉子(zǐ)齒數(shù)互為質數，任意(yì)兩(liǎng)齒之間(jiān)的機會相等，因此齒的磨損非(fēi)常均勻。    高粘度(dù)齒輪泵(bèng)的吸油(yóu)管道内徑應足夠大(dà)，并(bìng)避免狹(xiá)窄通道或急劇(jù)拐彎(wān)、減少(shǎo)彎頭(tóu)，去除不必(bì)要的閥門(mén)、附件(jiàn)，盡可(kě)能地降低(dī)泵的(de)安裝高度，縮短(duǎn)吸油管(guǎn)道的長度，以減少壓力損失。管接頭等元件(jiàn)的密封要(yào)良好(hǎo)，以防止空氣侵入，從而控(kòng)制氣穴與氣蝕(shí)的發生(shēng)。止回閥與安全閥在齒(chǐ)輪(lún)泵(bèng)的(de)輸出管(guǎn)路上最好安(ān)裝一個止回閥。這(zhè)樣在檢修泵及輸出管(guǎn)道時，系(xì)統中的液體不(bú)會發生(shēng)倒流。齒(chǐ)輪泵(bèng)帶負荷停(tíng)車時(shí)，亦可防止(zhǐ)泵倒轉而在其輸出(chū)管道(dào)内産(chǎn)生局部真空。應(yīng)當注意，出(chū)口止(zhǐ)回閥(fá)不(bú)能裝反或出現卡死現象。高粘度(dù)泵的出口(kǒu)管(guǎn)路上還(hái)應當設置(zhì)安全(quán)閥等保護裝置(zhì)，這樣一(yī)旦(dàn)泵的(de)出口(kǒu)通道發生(shēng)堵塞，就可(kě)以打(dǎ)開安全閥卸壓(yā)。安全閥可(kě)以與(yǔ)泵體(tǐ)或泵蓋鑄(zhù)成(chéng)一體，也(yě)可以(yǐ)單獨裝(zhuāng)配。對于(yú)需要(yào)正反轉的(de)高粘度齒輪泵(bèng)，其進出(chū)口管路(lù)上均需設置安(ān)全閥(fá)。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(zhān)度泵(bèng)是輸送高(gāo)粘度(dù)液體的齒(chǐ)輪泵，應做到在較低的功耗、較少的(de)洩漏(lòu)、較大的壓(yā)力下輸出(chū)最多(duō)的流量。在确定所要輸送的介(jiè)質(zhì)時，應該嚴格(gé)遵循産品(pǐn)說明(míng)書上(shàng)的(de)規定，盡(jìn)量使用(yòng)廠(chǎng)家推薦的(de)流體介質(zhì)，并注意(yì)考慮系(xì)統的工作溫度(dù)範圍。當希望在(zài)某一較寬的溫(wēn)度範圍内使用時，輸(shū)送介質的(de)粘度(dù)指數(shù)應該(gāi)高些。輸送(sòng)介質不僅是能(néng)量傳(chuán)遞的中介，而且(qiě)也是潤滑(huá)、密封及傳熱介質。液(yè)體粘(zhān)度(dù)過(guò)高會增加内摩(mó)擦阻力，降(jiàng)低輸出功率(lǜ)，浪費(fèi)能量，并(bìng)産生過高(gāo)的系(xì)統溫度.高粘度(dù)齒輪泵(bèng)的(de)出口管路上應當設(shè)置安全閥等保(bǎo)護裝置，這樣一(yī)旦泵的出口通(tōng)道發生堵塞，就可以打開安全(quán)閥(fá)卸壓。對于需(xū)要正反轉(zhuǎn)的(de)高粘度(dù)齒輪泵，其(qí)進出口(kǒu)管(guǎn)路上均需(xū)設置安全(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

　　高粘度泵(bèng)額定的壓力是(shì)指泵連(lián)續工作(zuò)時的(de)最(zuì)高(gāo)許用(yòng)壓(yā)力(lì)，而其(qí)工作(zuò)壓力(lì)則決定(dìng)于外部負載，安裝(zhuāng)和調試(shì)的(de)壽命與其工作壓力(lì)直(zhí)接(jiē)相關。對于(yú)不頻繁工作的(de)齒輪泵(bèng)，其工作(zuò)壓力可取為泵(bèng)的額(é)定壓力，考(kǎo)慮(lǜ)到産(chǎn)品質量(liàng)不同，最(zuì)好将額定壓力降(jiàng)低20%～30%使用。對(duì)于(yú)經(jīng)常工作于(yú)較高壓力(lì)下的齒輪(lún)泵，其工作壓力應比(bǐ)泵的額定(dìng)壓力(lì)低1～2個壓力級。石(shí)油化工設備常(cháng)常(cháng)是24小時連續(xù)運轉，這時(shí)泵的(de)工作(zuò)壓力應該取得比額定壓力低得多，且工(gōng)作(zuò)轉(zhuǎn)速也應該(gāi)低于額定轉(zhuǎn)速(sù)。如果高粘(zhān)度齒輪泵的(de)工作壓(yā)力調整(zhěng)過(guò)高，則會使齒輪泵在(zài)超負(fù)荷(hé)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.安裝與試運轉(zhuǎn)2. installation and commissioning

　　高粘度泵(bèng)的支座或法蘭與其驅動電機應采用共同的(de)安裝(zhuāng)基礎，基礎(chǔ)、法蘭或支(zhī)座均需具(jù)有足(zú)夠的剛度(dù)，以減小齒輪泵(bèng)運轉時産(chǎn)生的振動(dòng)和噪(zào)聲。電(diàn)動機與齒(chǐ)輪泵須用(yòng)彈(dàn)性聯軸器連(lián)接，同軸度(dù)小于0.1毫米，傾(qīng)斜角不得大(dà)于1度。安裝聯軸器時(shí)不得用錘敲打，以免(miǎn)傷害(hài)齒輪(lún)泵的齒輪等零(líng)件。若用(yòng)帶(dài)輪、鍊(liàn)輪等驅動時應(yīng)設托(tuō)架(jià)支承，以防主(zhǔ)動齒輪軸承受徑向力。緊(jǐn)固齒(chǐ)輪(lún)泵(bèng)、電動(dòng)機的(de)地腳螺釘(dìng)時，螺釘受力應(yīng)均勻，連接可靠(kào)。用手轉動(dòng)聯軸器時，應感(gǎn)覺到齒輪(lún)泵能夠輕松地轉(zhuǎn)動，沒有(yǒu)卡緊等異(yì)常現(xiàn)象出(chū)現(xiàn)，然後(hòu)才(cái)可以(yǐ)配管(guǎn)。高粘(zhān)度齒輪泵的吸(xī)油管道内徑應(yīng)足夠(gòu)大，并避免(miǎn)狹窄通道或急(jí)劇拐彎(wān)、彎頭，去(qù)除不必要(yào)的閥(fá)門、附(fù)件，盡可能(néng)地(dì)降低泵(bèng)的安(ān)裝高(gāo)度(dù)，縮短吸(xī)油管道(dào)的長度，以減(jiǎn)少壓力損(sǔn)失。管接頭等元(yuán)件的密(mì)封要良(liáng)好，以防止空(kōng)氣(qì)侵入(rù)，從而控制(zhì)氣穴與氣(qì)蝕的(de)發生。在開始運轉前(qián)，往齒輪泵(bèng)的殼體内灌滿(mǎn)待輸送的(de)液體(tǐ)，便于安全動。若(ruò)環境溫度低于(yú)冰(bīng)點，應(yīng)預(yù)先向(xiàng)泵内通入熱蒸(zhēng)汽，進(jìn)行預(yù)熱處(chù)理，然後(hòu)才(cái)可啟動齒輪泵。齒輪(lún)泵的旋轉方向(xiàng)要與(yǔ)進、出油口(kǒu)相符。齒(chǐ)輪泵若(ruò)是第(dì)一次運行(háng)，或長(zhǎng)期(qī)閑置後再使(shǐ)用(yòng)，最好在(zài)空載或小(xiǎo)負荷(hé)情況(kuàng)下先跑合(hé)一小(xiǎo)時左右。如果在(zài)跑合階段(duàn)預先(xiān)覺出異常(cháng)溫升、洩漏(lòu)、振動(dòng)和噪聲時，應機(jī)檢查(chá)。高(gāo)粘度泵的出口(kǒu)管(guǎn)路上還應(yīng)當設置安(ān)全閥等保(bǎo)護裝(zhuāng)置，這(zhè)樣一(yī)旦泵(bèng)的出口通道發(fā)生堵(dǔ)塞，就可以(yǐ)打開安全閥卸壓。對于(yú)需(xū)要正(zhèng)反轉的(de)高(gāo)粘度(dù)齒輪泵，其進出(chū)口管(guǎn)路上(shàng)均需(xū)設置安全閥。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.