NYP泵是(shì)容積式(shì)内齧合(he)齒輪泵(bèng)，主動齒(chǐ)輪（外轉(zhuan)子）帶動(dong)被動齒(chi)輪（内轉(zhuǎn)子）旋轉(zhuǎn)時，不斷(duan)産生封(fēng)閉的空(kong)間，在吸(xi)油區齒(chi)輪逐漸(jian)脫離齧(niè)合而液(yè)體不斷(duàn)地充滿(mǎn)齒間并(bìng)被帶到(dao)出油區(qū)，齒輪在(zai)出油區(qū)☎️進入齧(nie)合時液(ye)㊙️體被排(pái)⛷️出。兩個(gè)旋轉齒(chi)輪的共(gòng)同作用(yòng)，形成一(yī)個穩定(ding)的體積(ji)排量，沒(méi)有脈動(dòng)。由⭕于泵(bèng)是完全(quan)☎️對稱的(de)，泵可🐅以(yi)反轉，液(yè)流方向(xiang)也随之(zhi)改變。但(dan)應注意(yi)，泵的轉(zhuǎn)向可能(néng)受到密(mi)封或泵(beng)内其它(tā)結構的(de)🥰限制，用(yong)戶有反(fǎn)轉要求(qiú)時應在(zài)訂貨時(shí)做出說(shuō)明
    該泵的(de)流量可(kě)根據液(ye)體粘度(du)選擇合(hé)适的轉(zhuan)速來調(diào)整🚶。由于(yú)泵的流(liú)量取決(jué)于單轉(zhuan)排量和(hé)旋轉速(su)度，單轉(zhuǎn)💛排量是(shi)泵軸旋(xuán)轉360度的體(tǐ)積排量(liang)，實際上(shang)，單轉排(pai)量是在(zài)進出口(kou)壓差🍓為(wéi)零時❄️泵(bèng)轉一周(zhōu)的流量(liang)。各種規(guī)格的泵(beng)因為幾(jǐ)何尺寸(cùn)已定，隻(zhi)有通過(guo)改變轉(zhuǎn)速來調(diào)整流量(liàng)。轉速可(ke)由改變(bian)馬達的(de)轉速或(huo)🌂減速機(jī)的速比(bǐ)而改變(bian)，也可用(yòng)變速馬(ma)達或可(kě)變速減(jiǎn)速機。

     該泵(beng)結構簡(jian)單，适用(yòng)範圍廣(guang)，可以輸(shū)送高粘(zhān)度和低(dī)粘㊙️度的(de)各種液(yè)體，最高(gao)輸送粘(zhan)度可達(da)500000cst。溫(wēn)度範圍(wei)自-40—300℃,輸(shu)送液體(ti)可有潤(run)滑性也(ye)可以沒(mei)有潤滑(hua)性。由于(yu)内外💞轉(zhuan)子♌齒數(shù)互為質(zhi)數，任意(yì)兩齒之(zhi)間的機(jī)會相等(deng)，因此齒(chǐ)的磨損(sǔn)非常均(jun1)勻。    高粘(zhān)度齒輪(lún)泵的吸(xī)油管道(dao)内徑應(ying)足夠大(dà)，并避免(mian)狹窄通(tōng)道或急(ji)📱劇拐彎(wān)、減㊙️少彎(wān)頭，去除(chú)不必要(yào)的閥門(mén)、附件，盡(jin)可能地(di)降低泵(beng)的安裝(zhuāng)高度，縮(suo)短吸油(you)管道的(de)長度，以(yǐ)減少壓(yā)力損失(shi)。管接頭(tóu)等元件(jian)的密封(feng)要良好(hǎo)，以防止(zhǐ)空氣侵(qin)入，從而(er)控制氣(qì)穴與氣(qi)蝕的發(fā)生。止回(hui)閥與安(ān)全閥在(zai)齒輪泵(bèng)的輸出(chū)管路上(shàng)最好安(ān)裝一個(gè)止回閥(fá)。這樣在(zai)檢修泵(bèng)及🛀🏻輸出(chū)管道時(shí)，系統中(zhōng)的液體(ti)不會發(fa)生倒流(liú)。齒輪泵(beng)帶負荷(he)停車時(shi)，亦可防(fáng)止泵倒(dǎo)轉而在(zài)其輸出(chu)管道内(nei)産生🧡局(jú)部真空(kōng)。應當注(zhu)意，出口(kou)止回閥(fá)不能裝(zhuang)反或出(chu)🔴現卡死(si)現象。高(gāo)粘度泵(bèng)的出口(kou)管路上(shàng)還應當(dang)設置安(an)全閥等(děng)保護裝(zhuāng)置，這樣(yàng)一旦泵(beng)的出口(kou)通道發(fā)生堵塞(sai)，就可以(yi)打開安(ān)全閥卸(xie)壓。安全(quán)閥可以(yǐ)與泵體(ti)或泵蓋(gai)鑄成一(yi)體，也可(kě)以單獨(du)裝配。對(dui)于需要(yao)🈚正反轉(zhuan)的高🐕粘(zhān)度齒輪(lun)泵，其進(jin)出口管(guan)路上均(jun)需設置(zhi)安全閥(fa)。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.

   高粘度(du)泵是輸(shu)送高粘(zhān)度液體(ti)的齒輪(lun)泵，應做(zuo)到在較(jiao)低的功(gong)耗、較少(shao)的洩漏(lou)、較大的(de)壓力下(xià)🐆輸出最(zuì)多的流(liú)量。在确(què)定所要(yao)輸送的(de)介質時(shí)，應該嚴(yan)格遵循(xun)産品說(shuo)明🚶書上(shang)的規定(dìng)，盡量使(shi)用廠家(jia)推薦的(de)流🔴體介(jie)質，并注(zhu)意考慮(lǜ)系統的(de)工作溫(wēn)度範圍(wéi)。當希望(wang)在某一(yī)較寬的(de)溫度範(fan)圍内使(shi)用時，輸(shū)送介質(zhi)的粘度(du)指數應(ying)該高些(xie)。輸送介(jie)質不㊙️僅(jǐn)是能量(liang)傳遞的(de)中介，而(ér)且也是(shì)潤滑、密(mi)封♻️及傳(chuan)熱介質(zhi)。液體粘(zhān)度過高(gao)會增加(jiā)内🌈摩擦(cā)阻力，降(jiàng)低輸出(chū)功率，浪(lang)費能量(liàng)，并産生(shēng)過高的(de)系統溫(wēn)度.高粘(zhān)度齒輪(lun)泵的出(chū)口管路(lu)上應當(dāng)設置安(ān)全閥等(deng)保護裝(zhuang)置，這樣(yang)一旦泵(bèng)的出口(kǒu)通道發(fa)生堵塞(sāi)，就可以(yǐ)打開安(ān)全閥卸(xie)壓。對于(yu)🔱需要正(zheng)反轉的(de)高粘度(du)齒輪泵(bèng)，其進出(chū)口管路(lù)上均需(xu)設置安(ān)全閥。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(gōng)作壓力(lì)的選定(ding)1, select the work pressure

　　高粘度(du)泵額定(ding)的壓力(lì)是指泵(bèng)連續工(gong)作時的(de)最高許(xǔ)用壓力(lì)，而其工(gōng)作壓力(li)則決定(ding)于外部(bù)負載，安(ān)裝和調(diào)💞試的壽(shou)命🌈與其(qí)工作壓(yā)力直接(jiē)相關。對(duì)于不頻(pín)繁工作(zuò)的齒輪(lun)泵，其工(gong)作壓力(li)可取為(wei)泵的額(é)定壓力(li)，考慮到(dao)産品質(zhì)量不同(tong)，最好将(jiāng)額定壓(yā)力降低(di)20%～30%使用。對(dui)于經常(chang)工作于(yú)較高壓(yā)力下的(de)齒輪泵(bèng)，其工作(zuo)壓力應(ying)比泵的(de)額定壓(ya)力低1～2個(ge)壓力級(ji)。石油化(hua)工設備(bèi)常常是(shì)24小時連(lián)續運轉(zhuan)，這時泵(beng)的工作(zuo)壓力應(ying)該取得(dé)比額🚶‍♀️定(dìng)壓力低(di)🐅得多，且(qie)工作轉(zhuan)速也應(ying)該低于(yu)額定轉(zhuan)速🔞。如果(guo)高粘度(dù)齒輪泵(beng)的工作(zuò)壓力調(diào)整過高(gao)，則會使(shǐ)齒輪泵(beng)在超負(fù)荷下運(yun)行。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(yùn)轉2. Installation and commissioning

　　高粘(zhan)度泵的(de)支座或(huo)法蘭與(yu)其驅動(dong)電機應(ying)采用共(gòng)同☔的安(an)裝🛀基💃🏻礎(chu)，基礎、法(fa)蘭或支(zhī)座均需(xū)具有足(zu)夠的🏒剛(gāng)度，以減(jian)小齒輪(lun)泵運轉(zhuan)時産生(sheng)的振動(dòng)和噪聲(sheng)。電動機(ji)與齒輪(lun)泵須用(yòng)彈性聯(lián)軸器連(lian)接，同軸(zhou)度小于(yú)0.1毫米，傾(qing)斜角不(bu)得大于(yu)1度。安裝(zhuang)聯軸器(qi)時不得(dé)用錘敲(qiāo)打，以免(mian)傷害齒(chǐ)輪泵的(de)齒輪等(děng)零件。若(ruo)用帶輪(lun)、鍊輪等(děng)驅動時(shí)應設托(tuō)架支承(chéng)，以防主(zhǔ)動齒輪(lún)軸承受(shòu)徑向力(li)。緊固齒(chi)輪泵、電(diàn)動機的(de)地腳螺(luó)釘時，螺(luó)釘受力(li)應均勻(yún)，連接可(kě)靠。用手(shǒu)轉😘動🏃‍♂️聯(lián)🛀軸器時(shí)，應感覺(jiao)到齒輪(lún)泵能夠(gou)輕松地(dì)轉動，沒(méi)有卡緊(jǐn)等異常(chang)現象出(chū)現，然後(hou)才可以(yi)配管。高(gao)粘度齒(chi)輪泵的(de)吸油管(guǎn)道内徑(jìng)應足夠(gou)大，并避(bì)免狹窄(zhai)通道或(huo)急劇拐(guai)彎、彎頭(tóu)，去除不(bú)必要的(de)閥門、附(fu)件，盡可(kě)能地降(jiang)低泵的(de)安裝高(gao)💘度，縮短(duan)吸油管(guan)道的長(zhang)度，以減(jian)少壓力(lì)損失。管(guǎn)接頭等(děng)元件的(de)密封要(yào)良好，以(yi)防止空(kong)氣侵入(ru)，從而控(kòng)制氣穴(xué)🏃‍♂️與氣蝕(shí)的發生(shēng)。在開始(shǐ)運轉前(qian)，往齒輪(lún)泵的殼(ke)體内灌(guàn)滿待輸(shu)送的液(yè)體，便于(yú)安全動(dòng)。若環境(jìng)溫度低(di)于🎯冰點(dian)，應預先(xian)向泵内(nèi)通入熱(rè)蒸汽，進(jin)行預熱(re)處理，然(rán)後才可(ke)啟動齒(chi)輪泵。齒(chi)輪泵的(de)旋轉方(fāng)向要與(yǔ)進、出油(yóu)口相符(fú)。齒輪泵(beng)若是第(di)一次運(yun)行，或長(zhǎng)期閑置(zhi)後再使(shǐ)用，最好(hao)在空載(zǎi)或小負(fu)荷情況(kuàng)下先跑(pǎo)合一小(xiao)時左右(yòu)。如果在(zai)跑合階(jie)💁段預先(xiān)覺出異(yi)常溫升(shēng)、洩漏、振(zhèn)動和噪(zào)聲時，應(yīng)機檢查(chá)。高粘度(dù)泵的出(chu)口管路(lu)上還應(yīng)當設置(zhi)安全閥(fá)等保護(hu)裝置，這(zhè)樣一旦(dàn)泵的出(chu)口通道(dào)發生堵(du)塞，就可(ke)以打開(kāi)安全閥(fa)卸壓。對(dui)于需要(yao)正反轉(zhuan)的高粘(zhān)度齒輪(lun)泵，其進(jìn)出口管(guǎn)路上均(jun)需設置(zhi)安全閥(fá)。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.