NYP泵是容(róng)積式内齧合(hé)齒輪泵，主動(dong)齒輪（外轉子(zi)）帶動被動齒(chi)輪（内轉子）旋(xuán)轉時，不斷㊙️産(chǎn)生封閉❤️的空(kong)間，在吸油區(qū)齒輪逐漸脫(tuo)離齧合而液(yè)體不斷地充(chōng)滿齒間并被(bèi)帶到出油區(qū)，齒輪在出油(yóu)區進入齧合(he)時液🌈體被排(pai)出。兩個✊旋轉(zhuan)齒輪的共同(tóng)作用❌，形成一(yī)個穩定的體(tǐ)積排量，沒有(you)脈動。由🥰于泵(bèng)是完全對稱(chēng)的，泵可以反(fan)轉，液流方向(xiàng)也随之改變(biàn)。但應注意，泵(beng)的轉向可能(neng)受到密封或(huò)泵内其它結(jie)構的🔞限制，用(yong)戶有反🔞轉要(yào)求時應在訂(dìng)貨時做出說(shuo)明
    該泵(bèng)的流量可根(gēn)據液體粘度(dù)選擇合适的(de)轉速來調整(zhěng)☎️。由于泵❌的流(liu)量取決于單(dan)轉排量和旋(xuán)轉速度，單轉(zhuan)排量🥵是泵軸(zhóu)旋轉360度(dù)的體積排量(liàng)，實際上，單轉(zhuǎn)排量是在進(jìn)出口壓差為(wei)零時🥵泵🏃🏻轉一(yi)周的流量。各(ge)種規格的泵(beng)因為幾何尺(chǐ)寸☎️已定👅，隻有(you)通過改變轉(zhuan)速來調整流(liu)量。轉速可🔞由(yóu)改變馬達的(de)轉速或減速(sù)機的速比而(er)改變，也可用(yong)變速馬達或(huò)可變🤩速減速(su)機。

     該泵(bèng)結構簡單，适(shì)用範圍廣，可(kě)以輸送高粘(zhan)度和低🔞粘度(dù)的各種液體(ti)，最高輸送粘(zhān)度可達500000cst。溫度範圍自(zì)-40—300℃,輸(shū)送液體可有(yǒu)潤滑性也可(kě)以沒有潤滑(hua)性。由于内外(wai)⛷️轉子齒數互(hu)為質數，任意(yi)兩齒之間的(de)機會相等，因(yin)此齒的磨損(sun)非常均勻。    高(gao)粘度齒輪泵(bèng)的吸油管道(dao)内徑應足夠(gòu)大，并避免狹(xiá)窄通道或急(ji)劇‼️拐彎、減少(shao)彎頭，去除不(bu)必要的閥門(men)、附件，盡可能(neng)地降❗低泵的(de)安裝高度，縮(suō)短吸油管道(dao)的長度，以減(jian)少壓力損失(shi)。管💁接頭等元(yuán)件的密封要(yào)良好，以防止(zhǐ)空氣侵入，從(cóng)而控制👉氣穴(xue)與氣蝕的發(fā)生。止回閥與(yu)安全閥在齒(chǐ)輪泵的輸出(chū)管路上最好(hao)安裝一個止(zhǐ)回閥。這樣在(zài)檢修泵及輸(shū)出管👨‍❤️‍👨道時，系(xì)統中的液體(tǐ)不會發生倒(dǎo)流。齒輪泵帶(dài)負荷停車時(shi)，亦可防止泵(beng)倒轉而在其(qi)輸出管道内(nei)産生局🔞部真(zhen)空。應當注意(yì)，出口止回閥(fá)不能裝反或(huò)出現卡死現(xian)象。高🈚粘度泵(beng)的出口管路(lu)上還應當設(shè)置安全閥等(děng)保護裝置，這(zhè)樣一旦泵的(de)出口通道發(fa)生堵塞，就可(kě)以打開安全(quán)閥卸壓。安全(quán)閥可以與泵(bèng)體或泵蓋鑄(zhù)成一體，也⁉️可(ke)以單獨裝配(pei)。對于需要💋正(zhèng)反轉的高🌈粘(zhan)度齒輪泵，其(qí)進出口管路(lu)上均需設置(zhì)安全閥。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.

   高粘(zhan)度泵是輸送(song)高粘度液體(ti)的齒輪泵，應(ying)做到在較低(di)的功耗、較少(shao)的洩漏、較大(dà)的壓力下💁輸(shu)出最多的流(liu)量。在确定所(suo)要輸送的介(jie)質時，應該嚴(yan)格遵循🌍産品(pin)💋說明書上的(de)規定，盡量使(shǐ)用廠家推薦(jian)的流體介質(zhì)，并注意考慮(lü)系🤩統的工🚶作(zuo)溫度範圍。當(dang)希望在某一(yi)較寬的溫度(dù)範圍内使用(yong)時，輸送介💛質(zhi)的粘度指數(shù)應該高些。輸(shū)送介質不僅(jin)是能量傳♍遞(di)的中介，而🙇‍♀️且(qiě)🚶也是潤滑、密(mì)封及傳熱介(jiè)質。液💃體粘度(dù)過高會增加(jiā)内摩擦阻💋力(li)，降低輸出功(gong)率，浪費能量(liang)，并産生過高(gao)的系💞統溫度(du).高粘度齒輪(lun)泵的出口管(guan)路上應當設(she)置安全閥等(deng)保護裝置，這(zhe)樣一旦泵的(de)🐆出✨口通道發(fa)生堵塞，就可(kě)以打開安全(quan)閥卸壓。對于(yu)☀️需要正反🔅轉(zhuan)的高粘度齒(chǐ)輪泵，其進出(chū)口管路上均(jun1)需設置安全(quan)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(li)的選定1, select the work pressure

　　高粘(zhan)度泵額定的(de)壓力是指泵(beng)連續工作時(shí)的最高許用(yòng)壓力，而其工(gong)作壓力則決(jué)定于外部負(fu)載，安裝和調(diao)試的壽命與(yǔ)其工作壓力(li)直接相關。對(dui)于不頻繁工(gong)作的齒輪泵(beng)，其工作壓力(li)可取為泵的(de)額定壓力，考(kao)慮到産品質(zhi)量不🐇同，最好(hao)🏃🏻将額定壓力(li)降低20%～30%使用。對(dui)于經常工作(zuò)于較高壓力(li)下的齒輪泵(bèng)，其工作壓力(li)應比泵的額(é)定壓力低1～2個(ge)壓力級。石油(you)化工設備常(cháng)常是24小時連(lian)續運轉，這時(shí)泵的工作壓(yā)力應該取得(de)比額定✂️壓力(lì)低⛹🏻‍♀️得多，且工(gong)作轉速也應(ying)該低于額定(dìng)轉速。如果高(gao)粘度齒輪泵(bèng)的工作壓力(li)調整過高，則(zé)會使齒輪泵(beng)在超負荷下(xia)運行。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(yǔ)試運轉2. Installation and commissioning

　　高粘(zhan)度泵的支座(zuò)或法蘭與其(qi)驅動電機應(yīng)采用共同的(de)安裝基礎，基(jī)礎、法蘭或支(zhī)座均需具有(yǒu)足夠的剛度(dù)，以減小齒輪(lun)泵運轉時産(chǎn)生的振動和(he)噪聲。電動機(ji)與齒輪泵須(xū)用彈性聯軸(zhóu)器連接，同軸(zhou)度小于0.1毫米(mi)，傾斜角不得(de)大于1度。安裝(zhuāng)聯軸器時不(bu)得用錘敲打(dǎ)，以免傷害齒(chǐ)輪泵的齒輪(lún)等零件。若用(yòng)帶輪、鍊輪等(deng)驅動時應設(she)托架支承，以(yǐ)防主動齒輪(lun)軸承受徑向(xiàng)力。緊固齒輪(lún)泵、電動機的(de)地腳螺釘時(shi)，螺釘受力應(ying)均勻，連接可(kě)靠。用手轉動(dong)聯軸器時，應(yīng)感覺到齒輪(lun)泵能夠輕松(sōng)地轉動，沒有(you)卡緊等異常(chang)現象出現，然(ran)後⛷️才可以配(pèi)管。高粘度齒(chi)輪泵的吸油(you)管道内徑應(ying)足夠大，并避(bi)免狹窄通道(dao)或急🌈劇🏃🏻‍♂️拐彎(wān)、彎頭，去除不(bú)必要的閥門(mén)、附件，盡可能(neng)地降低泵的(de)安裝高度，縮(suo)短吸✔️油管道(dao)的長度，以減(jian)少壓力損失(shi)。管接頭🏃🏻等元(yuán)件的密封要(yao)良好👣，以防止(zhi)空氣侵入，從(cóng)而控制氣穴(xué)💯與氣蝕的發(fa)生。在開始運(yùn)轉前，往齒輪(lún)泵的殼體内(nei)灌滿待輸送(sòng)的液體，便于(yú)安全動。若環(huán)境溫🏃‍♂️度低于(yú)冰點，應預先(xiān)向泵内通入(ru)熱蒸汽，進行(hang)預熱處理，然(rán)後才可啟動(dòng)齒輪泵。齒輪(lún)泵的旋轉方(fāng)向要與進、出(chū)油口相符。齒(chi)輪泵若是第(dì)一次運行，或(huo)長期閑置後(hou)再使用，最好(hao)在空載或小(xiao)🐇負🔞荷情況下(xia)先跑合一小(xiao)時左右。如果(guo)在跑合階段(duan)預先覺出異(yi)常溫升、洩漏(lou)、振動和噪聲(shēng)時，應機檢查(chá)。高粘度🔞泵的(de)出口管路上(shàng)還應當設置(zhì)安全閥等保(bao)護裝置，這樣(yang)一旦泵的出(chū)口通道發生(shēng)堵塞💛，就可以(yi)打開安全閥(fá)卸壓。對于需(xū)要正反轉的(de)高粘度齒輪(lún)泵，其進出口(kou)管路上均需(xū)設置安全閥(fa)。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.