高粘(zhan)度齒輪泵并不(bu)能産生壓力，它(ta)隻是輸出流量(liang)。壓力低或無壓(yā)力，說明高粘度(du)齒 輪泵沒有吸(xi)入液體或洩漏(lòu)嚴重。High viscosity gear pump does not generate pressure, it is only the output flow.Pressure is low or no pressure, high viscosity gear wheel pump don't inhale the liquid or leakage is serious.

　　電動機輸(shu)出功率偏小、齒(chi) 輪泵排量選得(de)過大或壓力調(diao)得過高時，也會(hui)造成壓力不足(zú) 當然，壓力表損(sǔn)壞或壓力表節(jiē)流孔堵塞時也(yě)顯示不出壓力(li)，此時可換裝一(yī)個新的壓力表(biao)檢查。Small motor output power, gear wheel pump capacity to choose too large or pressure too high, can cause stress Pressure gauge damage or pressure gauge orifice jams, of course, also could not show pressure, can change a new pressure gauge to check at this time.

　　如果确認(ren)泵無流量輸出(chu)，可能是由于泵(bèng)安裝有誤、泵的(de)轉向不對，或吸(xi)人側(進液口及(ji)吸液管道)堵塞(sai)、出口止回閥裝(zhuang)反或卡死了，也(yě)有可能是驅動(dong)軸斷裂了。If confirmed that no flow pump output, could be turned to the pumps due to pump installation is wrong, wrong, or suction side (liquid into the mouth and suck liquid pipeline jam, export check valve installed backwards, or card is dead, it is possible that the drive shaft fracture.

　　高粘(zhan)度泵在轉速過(guo)低時會引起出(chu)液量不足，這種(zhong)現象往往是由(yóu)于泵的驅動裝(zhuāng)置打滑或功率(lü)不足所緻。此時(shi)應檢查齒 輪泵(beng)的實際轉速、泵(beng)與電動機的聯(lian)接及功率匹配(pei)情況等。High viscosity pump in low speed can cause insufficient quantity of produced liquid, this phenomenon is often due to the slippage of the pump drive or insufficient power.Check the gear wheel pump at this time of the actual speed, pump and motor connection and power matching, etc.

    高粘度(du)泵在開始運轉(zhuǎn)前，往齒輪泵的(de)殼體内灌滿待(dài)輸送的液體，便(bian)于安全啟動。若(ruò)環境溫度低于(yu)冰點，應預先向(xiàng)泵内通入熱蒸(zhēng)汽，進行預熱處(chu)理，然後才可啟(qǐ)動齒輪泵。高粘(zhan)度泵的旋轉方(fang)向要與進、出油(you)口相符。齒輪泵(bèng)若是第一次運(yùn)行，或長期閑置(zhì)後再使用，最好(hǎo)在空載或小負(fu)荷情況下先跑(pǎo)合一小時左右(yòu)。如果在跑合階(jiē)段預先覺察出(chū)異常溫升、洩漏(lou)、振動和噪聲時(shi)，應停機檢查。高(gāo)粘度齒輪泵的(de)支座或法蘭與(yu)其驅動電機應(yīng)采用共同的安(an)裝基礎，基礎、法(fa)蘭或支座均需(xu)具有足夠的剛(gang)度，以減小齒輪(lún)泵運轉時産生(sheng)的振動和噪聲(sheng)。電動機與齒輪(lún)泵須用彈性聯(lian)軸器連接，同軸(zhóu)度小于0.1毫米，傾(qing)斜角不得大于(yu)1度。安裝聯軸器(qì)時不得用錘敲(qiao)打，以免傷害齒(chǐ)輪泵的齒輪等(děng)零件。若用帶輪(lún)、鍊輪等驅動時(shí)應設托架支承(chéng)，以防主動齒輪(lun)軸承受徑向力(li)。緊固齒輪泵、電(diàn)動機的地腳螺(luó)釘時，螺釘受力(lì)應均勻，連接可(ke)靠。用手轉動聯(lián)軸器時，應感覺(jiào)到齒輪泵能夠(gou)輕松地轉動，沒(méi)有卡緊等異常(cháng)現象出現，然後(hòu)才可以配管。High viscosity pump before starting work, to gear pump casing filled with liquid, facilitate safe launch.If the environment temperature is below freezing, should advance to pump into the hot steam, preheating treatment, and then to start the pump.The direction of rotation of the pump with high viscosity, 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 detect abnormal temperature rise, leakage, vibration and noise, should stop check.High viscosity gear pump bearing or flange should adopt a common drive motor installationFoundation, 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 of the gear pump gearAnd other parts.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.

     高(gao)粘度齒輪泵的(de)吸油管道内徑(jìng)應足夠大，并避(bi)免狹窄通道或(huo)急劇拐彎、減少(shao)彎頭，去除不必(bi)要的閥門、附件(jian)，盡可能地降低(di)泵的安裝高度(dù)，縮短吸油管道(dao)的長度，以減少(shǎo)壓力損失。管接(jie)頭等元件的密(mi)封要良好，以防(fáng)止空氣侵入，從(cóng)而控制氣穴與(yǔ)氣蝕的發生。止(zhi)回閥與安全閥(fá)在齒輪泵的輸(shū)出管路上最好(hǎo)安裝一個止回(hui)閥。這樣在檢修(xiu)泵及輸出管道(dao)時，系統中的液(yè)體不會發生倒(dao)流。齒輪泵帶負(fù)荷停車時，亦可(ke)防止泵倒轉而(ér)在其輸出管道(dao)内産生局部真(zhen)空。應當注意，出(chū)口止回閥不能(néng)裝反或出現卡(kǎ)死現象。高粘度(du)泵的出口管路(lù)上還應當設置(zhi)安全閥等保護(hù)裝置，這樣一旦(dan)泵的出口通道(dào)發生堵塞，就可(ke)以打開安全閥(fá)卸壓。安全閥可(ke)以與泵體或泵(bèng)蓋鑄成一體，也(yě)可以單獨裝配(pei)。對于需要正反(fan)轉的高粘度齒(chǐ)輪泵，其進出口(kou)管路上均需設(shè)置安全閥。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)度泵是輸送高(gāo)粘度液體的齒(chǐ)輪泵，應做到在(zai)較低的功耗、較(jiao)少的洩漏、較大(dà)的壓力下輸出(chu)最多的流量。在(zài)确定所要輸送(sòng)的介質時，應該(gai)嚴格遵循産品(pǐn)說明書上的規(guī)定，盡量使用廠(chǎng)家推薦的流體(ti)介質，并注意考(kǎo)慮系統的工作(zuò)溫度範圍。當希(xī)望在某一較寬(kuan)的溫度範圍内(nèi)使用時，輸送介(jiè)質的粘度指數(shu)應該高些。輸送(sòng)介質不僅是能(néng)量傳遞的中介(jie)，而且也是潤滑(huá)、密封及傳熱介(jiè)質。液體粘度過(guò)高會增加内摩(mo)擦阻力，降低輸(shu)出功率，浪費能(néng)量，并産生過高(gao)的系統溫度.高(gāo)粘度齒輪泵的(de)出口管路上應(yīng)當設置安全閥(fá)等保護裝置，這(zhe)樣一旦泵的出(chū)口通道發生堵(du)塞，就可以打開(kāi)安全閥卸壓。對(dui)于需要正反轉(zhuan)的高粘度齒輪(lun)泵，其進出口管(guan)路上均需設置(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、工作壓(yā)力的選定1, select the work pressure

　　高粘(zhan)度泵額定的壓(yā)力是指泵連續(xu)工作時的最高(gāo)許用壓力，而其(qí)工作壓力則決(jue)定于外部負載(zai)，安裝和調試的(de)壽命與其工作(zuò)壓力直接相關(guān)。對于不頻繁工(gōng)作的齒輪泵，其(qí)工作壓力可取(qǔ)為泵的額定壓(ya)力，考慮到産品(pǐn)質量不同，最好(hǎo)将額定壓力降(jiang)低20%～30%使用。對于經(jīng)常工作于較高(gāo)壓力下的齒輪(lun)泵，其工作壓力(li)應比泵的額定(ding)壓力低1～2個壓力(li)級。石油化工設(she)備常常是24小時(shi)連續運轉，這時(shi)泵的工作壓力(lì)應該取得比額(é)定壓力低得多(duō)，且工作轉速也(yě)應該低于額定(dìng)轉速。如果高粘(zhan)度齒輪泵的工(gōng)作壓力調整過(guò)高，則會使齒輪(lún)泵在超負荷下(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.安裝與試(shì)運轉2. Installation and commissioning

　　高粘度泵(bèng)的支座或法蘭(lan)與其驅動電機(jī)應采用共同的(de)安裝基礎，基礎(chǔ)、法蘭或支座均(jun)需具有足夠的(de)剛度，以減小齒(chi)輪泵運轉時産(chan)生的振動和噪(zào)聲。電動機與齒(chǐ)輪泵須用彈性(xing)聯軸器連接，同(tóng)軸度小于0.1毫米(mǐ)，傾斜角不得大(dà)于1度。安裝聯軸(zhou)器時不得用錘(chuí)敲打，以免傷害(hài)齒輪泵的齒輪(lun)等零件。若用帶(dài)輪、鍊輪等驅動(dong)時應設托架支(zhi)承，以防主動齒(chǐ)輪軸承受徑向(xiang)力。緊固齒輪泵(bèng)、電動機的地腳(jiao)螺釘時，螺釘受(shòu)力應均勻，連接(jie)可靠。用手轉動(dong)聯軸器時，應感(gan)覺到齒輪泵能(néng)夠輕松地轉動(dòng)，沒有卡緊等異(yì)常現象出現，然(ran)後才可以配管(guǎn)。高粘度齒輪泵(bèng)的吸油管道内(nèi)徑應足夠大，并(bìng)避免狹窄通道(dao)或急劇拐彎、彎(wan)頭，去除不必要(yào)的閥門、附件，盡(jin)可能地降低泵(bèng)的安裝高度，縮(suō)短吸油管道的(de)長度，以減少壓(ya)力損失。管接頭(tóu)等元件的密封(feng)要良好，以防止(zhǐ)空氣侵入，從而(er)控制氣穴與氣(qì)蝕的發生。在開(kāi)始運轉前，往齒(chi)輪泵的殼體内(nèi)灌滿待輸送的(de)液體，便于安全(quán)動。若環境溫度(dù)低于冰點，應預(yù)先向泵内通入(ru)熱蒸汽，進行預(yu)熱處理，然後才(cai)可啟動齒輪泵(bèng)。齒輪泵的旋轉(zhuan)方向要與進、出(chu)油口相符。齒輪(lun)泵若是第一次(ci)運行，或長期閑(xian)置後再使用，最(zuì)好在空載或小(xiǎo)負荷情況下先(xiān)跑合一小時左(zuo)右。如果在跑合(he)階段預先覺出(chū)異常溫升、洩漏(lòu)、振動和噪聲時(shí)，應機檢查。高粘(zhān)度泵的出口管(guan)路上還應當設(shè)置安全閥等保(bao)護裝置，這樣一(yi)旦泵的出口通(tōng)道發生堵塞，就(jiù)可以打開安全(quán)閥卸壓。對于需(xu)要正反轉的高(gāo)粘度齒輪泵，其(qí)進出口管路上(shang)均需設置安全(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.