NYP泵是(shi)容積式内齧合齒(chi)輪泵，主動齒輪（外(wài)轉子）帶動被動齒(chi)輪（内轉子）旋轉時(shi)，不斷産生封閉🈲的(de)空間，在吸油區齒(chi)輪逐漸脫離齧合(he)而液✉️體不斷地🔴充(chong)滿齒間并被帶到(dào)出油區，齒輪在出(chū)油區進入齧合時(shí)液體被排出。兩個(ge)旋轉齒輪的🐕共同(tong)作用，形成一個穩(wěn)定的體積排量，沒(méi)有脈動。由于泵是(shi)完全對稱的，泵可(ke)以反轉，液流方向(xiàng)也随之改變。但應(ying)注意，泵的轉向可(ke)能受到密封或泵(bèng)内其⛹🏻‍♀️它結構的限(xian)制，用💜戶有反轉要(yào)求時應在訂貨時(shi)做出說明
    該(gai)泵的流量可根據(jù)液體粘度選擇合(hé)适的轉速來調整(zhěng)。由于泵的流量取(qu)決于單轉排量和(he)旋轉速度，單轉排(pái)量是泵軸旋轉360度的體積排量(liàng)，實際上，單轉排量(liang)是在進出口壓差(cha)為🧑🏽‍🤝‍🧑🏻零時泵🛀🏻轉一周(zhōu)的流量。各種規格(ge)的泵因為幾何尺(chi)寸已定，隻有通過(guò)改變轉速來調整(zhěng)流量。轉速可由改(gai)變馬達的🆚轉速或(huo)減速機的速比而(ér)改變，也可用變速(sù)馬達或可變速減(jiǎn)速機。

     該泵結(jie)構簡單，适用範圍(wéi)廣，可以輸送高粘(zhan)度和低粘度的🏃🏻各(ge)種液體，最高輸送(sòng)粘度可達500000cst。溫(wēn)度範圍自-40—300℃,輸送液體可有(yǒu)潤滑性也可以沒(mei)有潤滑性。由于内(nèi)外轉💜子齒數互為(wéi)質數，任意兩齒之(zhī)間的機會相等，因(yīn)此齒的磨損非常(chang)均勻。    高粘度齒輪(lun)泵的吸油管道内(nèi)徑應足夠大，并避(bì)免狹窄通道或急(ji)劇拐彎、減少彎頭(tou)，去除不必要的閥(fa)門、附件，盡可能地(di)降低泵🔱的安裝高(gao)度，縮短吸油管道(dao)的長度，以減少壓(ya)力損失。管接頭等(děng)元件的密封要良(liang)好，以防止🐪空氣侵(qin)入，從而控制氣穴(xue)與氣蝕的發生💘。止(zhǐ)回閥與🏃安全閥在(zai)齒輪泵的輸出管(guan)路上最好安裝一(yī)個止回閥。這樣在(zài)檢修泵👈及輸🆚出管(guan)道時，系統中的液(ye)體不會發生倒流(liú)。齒輪泵帶負荷停(ting)車時，亦可防止泵(beng)倒轉而在其輸出(chū)管道内産生局部(bù)真空。應當注意，出(chu)口止回閥不能裝(zhuang)反或出現卡死現(xian)象。高粘度📱泵的出(chū)口管路上還應當(dang)設置安全閥等保(bǎo)護裝置，這樣一旦(dan)泵的出口通道🈲發(fa)生堵塞，就可以打(dǎ)🌍開安全閥卸壓。安(ān)全閥可以與泵體(tǐ)或泵蓋鑄成一體(tǐ)，也可以單獨裝配(pei)。對于需要😄正反轉(zhuan)的高粘度齒輪泵(beng)，其進出口管路上(shang)均需設置安全閥(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.

   高粘度泵是輸送(sòng)高粘度液體的齒(chi)輪泵，應做到在較(jiào)低的功耗、較少的(de)洩漏、較大的壓力(lì)下輸出最✔️多🙇‍♀️的流(liú)量。在确定所要輸(shū)送的介質時，應該(gāi)嚴格遵循♉産品說(shuō)明書上的規定，盡(jin)量使用廠家推薦(jiàn)的流體介質，并注(zhu)意考慮系統的工(gōng)作溫度範圍。當希(xi)望在🔞某一較寬📧的(de)溫度範圍内使用(yong)時，輸送介💛質的粘(zhan)度指🌈數應該高些(xie)。輸送介質不僅是(shi)能量傳遞的中介(jie)，而且也是潤滑、密(mì)封及傳熱介質。液(yè)體粘度過高會增(zeng)加内🎯摩擦阻力，降(jiàng)低輸出功率，浪費(fèi)能量，并産生過高(gao)的系統溫度.高粘(zhān)度齒輪泵的出口(kou)管路上應當設置(zhi)安全閥等保護裝(zhuāng)置，這樣一旦泵🌂的(de)出口通道發生堵(dǔ)塞，就可以打開安(ān)全閥卸壓。對于需(xū)要正反轉的⁉️高粘(zhan)度齒輪泵，其進出(chu)口管路上均需設(shè)置安全閥。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、工作壓(yā)力的選定1, select the work pressure

　　高粘度(du)泵額定的壓力是(shì)指泵連續工作時(shi)的最高許用壓🌈力(li)，而其工作壓力則(zé)決定于外部負載(zai)，安裝和調試的🌍壽(shòu)命與其工作壓力(lì)直接相關。對于不(bu)頻繁工作的齒輪(lun)泵，其工作壓力可(kě)取為泵的額定壓(ya)力，考慮到産品質(zhì)量不同，最好将額(e)定壓力降低20%～30%使用(yong)。對于經常工作于(yú)較高壓力下的齒(chi)輪泵，其工作壓力(li)應比泵的額定壓(yā)力低1～2個壓力級。石(shí)油化工設備常常(chang)是24小時連續運轉(zhuan)，這時泵的工作壓(yā)力應該取得比額(e)定壓力📞低得多，且(qiě)工作轉速也應該(gāi)低于額定轉速。如(ru)果高粘度齒輪泵(beng)的工作壓力調整(zheng)過高，則會使齒輪(lún)泵在超負荷下運(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.安裝與試運轉(zhuan)2. Installation and commissioning

　　高粘度泵的支座(zuò)或法蘭與其驅動(dòng)電機應采用共同(tong)的✊安🈚裝❗基礎，基礎(chu)、法蘭或支座均需(xu)具有足夠的🏃🏻‍♂️剛度(dù)，以減小齒輪泵運(yùn)轉時産生的振動(dòng)和噪聲。電動機與(yǔ)齒輪泵須用彈性(xìng)聯軸器連接，同軸(zhóu)度小于0.1毫米，傾斜(xié)角不得大于1度。安(an)裝聯軸器時不得(dé)用錘敲打，以免傷(shāng)害齒輪泵的齒輪(lun)等零件。若用帶輪(lun)、鍊輪等驅動時應(yīng)設托架支承，以防(fáng)主🏃‍♂️動齒輪軸承受(shou)徑向力。緊固齒輪(lun)泵、電動機的地腳(jiǎo)螺釘時，螺釘受力(li)應均勻，連接可靠(kao)。用手轉🔞動聯軸器(qì)時，應感覺到齒輪(lún)泵能夠輕松地轉(zhuǎn)動，沒有卡緊等異(yi)常現象出現，然後(hòu)才可😘以配管。高粘(zhan)度齒輪泵的吸油(you)管道内徑應足夠(gòu)大，并避免狹窄通(tong)道或急劇拐彎、彎(wān)頭，去除不必要的(de)閥門、附件，盡可能(néng)地降🈲低泵的安裝(zhuang)高度，縮短吸🙇‍♀️油管(guan)道的長度，以減少(shao)壓力損失🈲。管接頭(tou)👉等元件的密封要(yao)良好，以防止空氣(qì)侵入，從而控制氣(qì)穴與氣蝕的發生(sheng)。在開始運轉前📱，往(wǎng)齒輪泵的殼體内(nei)灌滿待輸送的液(yè)體，便于安全動。若(ruo)環境溫度低于冰(bing)點，應預先向泵内(nèi)通入熱蒸汽，進行(háng)預熱處理，然後才(cái)🐪可啟動齒輪泵。齒(chi)輪泵的旋轉方向(xiàng)要與進、出油口相(xiàng)符。齒輪泵若是第(di)一次運行，或長期(qi)閑置後再使用，最(zuì)好在空載或小負(fu)荷情況下先跑合(hé)一小時左右。如果(guǒ)在跑合階段預先(xiān)覺出異常溫升、洩(xiè)漏、振動和噪聲時(shí)，應機檢查。高粘度(dù)🤞泵的出口管路✊上(shang)還應當設置安全(quan)閥等保護💚裝置，這(zhe)樣一旦泵的🐆出口(kou)通道發生堵塞，就(jiù)可以打開安全閥(fa)卸壓。對于需要正(zhèng)反轉的高粘度齒(chǐ)輪泵，其進出口管(guǎn)路上均需設置安(an)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.