NYP泵是容積(jī)式内齧合(he)齒輪泵，主(zhu)動齒輪（外(wài)轉子）帶動(dong)被動齒輪(lun)（内轉子）旋(xuán)轉時，不斷(duan)☂️産生封😘閉(bì)的空間，在(zài)吸油區齒(chǐ)輪逐漸脫(tuo)離齧合而(er)液體不🐉斷(duàn)地充滿齒(chǐ)間并被帶(dai)到出油區(qū)，齒輪在出(chu)油區進入(rù)齧合時液(yè)體被排出(chu)。兩個旋轉(zhuǎn)齒輪的😄共(gòng)同作用，形(xing)成一個穩(wěn)定的體積(ji)排量，沒有(yǒu)脈動。由🍓于(yú)泵是完全(quán)對稱的，泵(bèng)可💯以反轉(zhuan)，液流方向(xiang)也随之改(gǎi)變。但應注(zhu)❗意，泵的轉(zhuan)向可能💁受(shou)到密封或(huo)泵内其它(ta)結構的🔅限(xiàn)制，用戶有(yǒu)反轉要求(qiú)時應在訂(ding)貨時做出(chū)說明
    該泵的流(liú)量可根據(jù)液體粘度(du)選擇合适(shì)的轉速來(lái)調🙇‍♀️整。由于(yú)泵的流量(liang)取決于單(dān)轉排量和(hé)旋轉速度(dù)，單轉排量(liàng)☀️是泵軸旋(xuan)轉360度(du)的體積排(pai)量，實際上(shàng)，單轉排量(liàng)是在進出(chu)口壓差為(wei)零時泵轉(zhuǎn)一周的流(liu)量。各種規(guī)格的泵因(yīn)為幾何尺(chi)寸已定，隻(zhī)有通過改(gǎi)變轉速來(lai)調整流量(liàng)。轉速可由(yóu)改變🔆馬達(dá)的轉速或(huo)減速機的(de)速比👄而改(gai)變，也可♍用(yòng)變速馬達(da)或可變🔴速(sù)減速機。

     該泵結(jie)構簡單，适(shì)用範圍廣(guang)，可以輸送(sòng)高粘度和(hé)低🔴粘度🧡的(de)各種液體(tǐ)，最高輸送(song)粘度可達(dá)500000cst。溫度(dù)範圍自-40—300℃,輸(shū)送液體可(kě)有潤滑性(xing)也可以沒(méi)有潤滑性(xìng)。由于内外(wài)😍轉子齒數(shu)互為質數(shu)，任意兩齒(chǐ)之間的機(jī)會相等，因(yīn)此🐉齒的🍓磨(mo)損非常💋均(jun1)勻。    高粘度(dù)齒輪泵的(de)吸油管道(dào)内徑應足(zú)夠大，并避(bì)免狹窄通(tong)道或急🌂劇(jù)拐彎🌈、減少(shao)⭕彎頭，去除(chú)不必要的(de)閥門、附件(jiàn)，盡可能地(dì)降低泵的(de)安裝高度(dù)，縮💚短吸油(you)管道的長(zhang)度，以減少(shao)壓力損失(shī)。管㊙️接頭等(deng)元件的🏃‍♀️密(mi)封要良好(hǎo)，以防止空(kong)氣侵入，從(cóng)而控制氣(qì)穴與氣蝕(shi)的發生。止(zhi)回閥與安(an)全閥在齒(chi)輪泵的輸(shū)出管路上(shang)最好安裝(zhuāng)一個止回(huí)閥。這樣在(zai)檢修🐉泵及(jí)輸出管道(dào)時，系統中(zhōng)的液體不(bu)會發生倒(dǎo)流。齒輪泵(beng)帶負荷停(tíng)車時，亦可(ke)防止泵倒(dǎo)轉而在其(qí)輸出管道(dao)内☂️産生局(jú)部真空。應(yīng)當注意，出(chu)口止回閥(fa)不能裝反(fǎn)或出♍現卡(ka)死現象。高(gāo)🧑🏾‍🤝‍🧑🏼粘度泵的(de)出口管路(lu)上還應當(dāng)設置安☂️全(quán)閥等保護(hù)裝🍓置，這樣(yang)一旦泵的(de)出口通道(dào)發生堵塞(sāi)，就可以打(dǎ)開安全閥(fa)卸壓。安全(quan)閥可以與(yu)🐕泵體或泵(bèng)蓋🌂鑄成一(yi)體，也可以(yǐ)單獨裝📱配(pèi)。對于需要(yao)正反轉的(de)高粘度齒(chǐ)輪泵，其進(jin)出口管路(lu)上均需設(she)置安全閥(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.

   高粘度泵(beng)是輸送高(gāo)粘度液體(ti)的齒輪泵(bèng)，應做到在(zài)較低的功(gong)耗、較少的(de)洩漏、較大(dà)的壓力下(xià)輸出最多(duō)的流量。在(zai)确定所要(yào)輸送的介(jie)質時，應該(gāi)嚴格遵循(xun)産品說明(ming)書上🔱的規(guī)定，盡量使(shi)用廠家推(tuī)㊙️薦的流體(tǐ)介質，并注(zhu)意💘考慮系(xi)統的工作(zuò)溫度範圍(wéi)。當希望在(zai)某一較寬(kuān)😘的溫度範(fan)👅圍内使用(yòng)時，輸送介(jiè)質的粘度(du)指數應該(gai)高些⚽。輸送(sòng)介質不僅(jǐn)是能量傳(chuán)遞的中介(jiè)，而且也是(shi)潤滑、密封(fēng)及傳熱介(jiè)質。液體粘(zhān)度過高會(huì)增加内摩(mo)擦阻力，降(jiang)低輸🐅出功(gōng)率，浪費能(néng)📐量⁉️，并産生(sheng)過高的系(xi)統溫度.高(gao)粘度齒輪(lún)泵的出口(kǒu)管路上應(yīng)當設置安(an)全閥等保(bao)護裝置，這(zhè)樣一旦泵(bèng)的出口通(tōng)道發生堵(du)塞，就可以(yǐ)打開安全(quán)閥卸壓。對(dui)于需要正(zheng)反✨轉的高(gao)粘度齒輪(lún)泵，其進出(chu)口管路上(shang)均需設置(zhì)安全閥。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(gong)作壓力的(de)選定1, select the work pressure

　　高粘(zhān)度泵額定(dìng)的壓力是(shi)指泵連續(xù)工作時的(de)最高💞許用(yong)壓🧑🏽‍🤝‍🧑🏻力📱，而其(qí)工作壓力(lì)則決定于(yú)外部負載(zǎi)，安裝和調(diao)試的壽命(ming)與其工作(zuo)壓力直接(jie)相關。對于(yu)不頻繁工(gong)作的齒輪(lún)泵，其工作(zuò)壓力可取(qǔ)為泵的額(e)定壓力，考(kǎo)慮到産品(pǐn)質量不同(tóng)，最👨‍❤️‍👨好将額(e)定壓力降(jiang)低20%～30%使用。對(dui)于經常工(gōng)作于較高(gao)壓力下的(de)齒輪泵，其(qí)工作壓力(lì)應比泵的(de)額定壓力(lì)低1～2個壓力(li)級。石油化(huà)工設備常(chang)常是24小時(shí)連續運轉(zhuan)，這時泵的(de)工作壓力(li)應該取得(de)比額定壓(yā)力低得多(duo)，且工作轉(zhuǎn)速也應該(gai)低于額定(ding)轉速。如果(guǒ)高粘度齒(chi)輪泵的工(gong)作壓力調(diào)整過高，則(ze)會使齒輪(lun)泵在超負(fu)荷下運行(hang)。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(shi)運轉2. Installation and commissioning

　　高粘(zhan)度泵的支(zhī)座或法蘭(lan)與其驅動(dòng)電機應采(cai)用共同♊的(de)安裝基礎(chu)，基礎、法蘭(lan)或支座均(jun)需具有足(zú)夠的剛度(dù)，以減小齒(chi)輪泵運轉(zhuǎn)時産生的(de)振動和噪(zao)聲。電動機(ji)與齒輪泵(bèng)須用彈性(xìng)聯軸器連(lian)接，同軸度(du)小于0.1毫米(mi)，傾斜角不(bú)得大于1度(du)。安裝聯軸(zhou)器時不得(dé)用錘敲打(da)，以免傷害(hai)齒輪泵的(de)齒輪等零(líng)件。若用帶(dai)輪、鍊輪等(deng)驅動時應(yīng)設托架支(zhī)承，以防主(zhǔ)👄動齒輪軸(zhóu)承受徑向(xiang)力。緊固齒(chi)輪泵、電動(dong)機的地腳(jiao)螺釘時，螺(luó)釘受力應(ying)均勻，連接(jiē)可靠。用💃手(shǒu)轉動聯軸(zhóu)器時，應感(gǎn)覺到齒輪(lun)泵能夠輕(qīng)松地轉動(dòng)，沒有卡緊(jin)等異常現(xiàn)象出現，然(rán)後才可以(yi)💋配管。高粘(zhān)度齒輪泵(beng)的吸油管(guan)道内徑應(ying)足夠大，并(bìng)避免狹窄(zhǎi)通道或急(ji)劇拐彎、彎(wan)頭，去除不(bu)必要的閥(fa)門、附件，盡(jìn)可能地降(jiàng)✉️低泵的安(an)裝高度，縮(suō)短吸油管(guan)道的長度(dù)，以減少壓(ya)力損失。管(guan)接頭🚶‍♀️等元(yuán)件的密封(feng)👅要良好，以(yi)防止空氣(qì)侵入，從而(er)🔆控制氣穴(xué)與氣蝕的(de)發生。在開(kai)始運轉前(qián)，往齒輪泵(beng)的殼體内(nèi)灌滿待輸(shu)送的液體(tǐ)，便于安全(quan)動。若環境(jìng)溫度低于(yú)冰點，應預(yù)先向泵内(nèi)通入熱蒸(zhēng)汽，進行預(yu)熱處理，然(ran)後才可啟(qǐ)動齒輪泵(bèng)。齒輪泵的(de)旋轉方向(xiang)要與進、出(chu)油口相符(fu)。齒輪泵若(ruò)是第一次(ci)運行，或長(zhang)期閑置後(hòu)再使用，最(zuì)好在空載(zǎi)或小負荷(he)🐇情況下先(xiān)跑合一小(xiao)時左右。如(ru)果在跑合(hé)階段預先(xiān)覺💜出異常(cháng)溫升、洩漏(lòu)、振動和噪(zao)聲時，應機(jī)檢查。高粘(zhān)度泵的出(chū)口管路上(shàng)還應當設(she)置安全閥(fa)等保護裝(zhuāng)置，這樣🔞一(yi)旦泵的出(chū)口通道發(fā)生堵塞🐪，就(jiu)可以打開(kai)安全閥卸(xiè)壓。對于需(xū)要正反轉(zhuǎn)的高粘度(du)齒輪泵，其(qi)進出口管(guan)路上均需(xu)設置安全(quan)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.