高粘(zhān)度齒輪泵并不能(néng)産生壓力，它隻是輸出流量。壓力低或無壓力，說明高粘度齒 輪泵沒有吸入液體或洩漏嚴重。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.

　　電動機輸出(chū)功率偏小、齒 輪泵排量選得過(guò)大或壓力調得過高時，也會造成壓力(lì)不足 當然，壓力表損壞或壓力表節流孔(kǒng)堵塞時也顯示不出壓力(lì)，此時可換裝一(yī)個新的壓力表檢查。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.

　　如果确認泵無流量輸出(chū)，可能是由于泵(bèng)安裝有誤、泵的轉向不對，或吸人側(進液口及吸液管道)堵塞、出口止回(huí)閥裝反或卡(kǎ)死了，也有可能是驅動軸斷(duàn)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.

　　高粘度泵(bèng)在轉速過低時會引起出液量不足，這種(zhǒng)現象往往是由于泵的驅動裝(zhuāng)置打(dǎ)滑或(huò)功率不足所緻。此時應(yīng)檢查齒 輪泵的實際轉速、泵與電動機(jī)的聯接(jiē)及功率匹配情況等。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.

    高粘度泵在開始運轉前(qián)，往齒輪泵的(de)殼體(tǐ)内灌滿待輸送的液體，便于安全啟(qǐ)動。若環境溫度低于冰點，應預先向泵内通入熱蒸汽(qì)，進行預(yù)熱處理，然後才可啟動齒輪泵(bèng)。高粘度泵的旋(xuán)轉方向要與進(jìn)、出(chū)油口相符。齒輪泵(bèng)若是第一次運行，或長期閑置後再(zài)使用(yòng)，最好在空載或小負荷情(qíng)況下(xià)先跑合一(yī)小時左右。如果在跑(pǎo)合階段預先覺察出異(yì)常溫升、洩漏、振動和噪聲時，應停機檢查。高粘度齒輪泵的支座或法蘭與其驅動電機應采用共同的安裝(zhuāng)基礎，基礎、法蘭(lán)或(huò)支座均需具有足夠的剛度，以減小(xiǎo)齒輪泵運轉時産生的(de)振動和噪聲(shēng)。電動機與齒輪泵須用彈(dàn)性聯軸器(qì)連接，同軸度小于0.1毫(háo)米，傾斜角不得(dé)大于1度(dù)。安裝(zhuāng)聯軸器時不得用錘敲打，以免傷(shāng)害齒輪(lún)泵的齒輪等零(líng)件。若用(yòng)帶輪、鍊輪(lún)等驅動時應設托架(jià)支承，以防主動齒輪軸承受徑向力。緊固齒輪泵、電動機的地腳螺釘時，螺釘受力應均勻(yún)，連接可靠。用(yòng)手轉動聯軸器時，應感(gǎn)覺到齒輪泵能夠(gòu)輕松地轉動，沒有卡緊等異常現象(xiàng)出現，然後才可以配管。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(gāo)粘度齒輪(lún)泵的吸油管道内徑應足夠大(dà)，并避免狹窄通道或急劇拐彎、減少彎頭(tóu)，去除不必要的閥門(mén)、附件，盡可能地降低泵的安裝高度，縮短吸油管道(dào)的長度，以減少壓力損失。管接(jiē)頭等(děng)元件的密封要良(liáng)好，以防止空氣侵入，從而控制氣穴(xué)與氣蝕的發生。止回閥與安全閥在齒輪泵的輸出(chū)管路上最好(hǎo)安裝一個止(zhǐ)回閥。這樣在(zài)檢修泵及輸出管道時，系統中的液(yè)體不會發生倒流。齒輪泵帶負荷停車時(shí)，亦可防止泵倒轉而在其輸出(chū)管道内産生局部真空。應當注意，出口(kǒu)止回閥不能裝(zhuāng)反或出(chū)現卡死現(xiàn)象。高粘度泵的出(chū)口(kǒu)管路上還應當設置安全閥等(děng)保(bǎo)護裝置(zhì)，這樣一旦泵的出口(kǒu)通道發生堵塞，就可以打開安全閥卸壓。安全閥可以與泵體或泵蓋鑄成一體，也可以單獨裝配(pèi)。對于需要正反轉的高(gāo)粘(zhān)度齒輪泵(bèng)，其進出口管路上均需設置安全閥(fá)。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(dù)泵是輸(shū)送高粘度液體的齒輪泵，應做到在較低的功(gōng)耗、較少的洩漏、較大的壓力下輸出最多的流量。在确定所要輸送的介質時，應該嚴格遵循産品說明書上的規定(dìng)，盡(jìn)量使用廠家推薦的流體介質，并注意考慮系統的工作溫度範圍(wéi)。當希望在某一較寬的溫度範圍内使用時，輸送介質的粘度指數應該高些(xiē)。輸送介質不僅是能量傳遞的中介，而且也是潤滑、密封及傳(chuán)熱介(jiè)質。液體粘度過(guò)高(gāo)會增加内摩擦阻力，降(jiàng)低輸出功(gōng)率，浪費能量，并産生過高的系統溫度.高粘度齒輪泵的出口管路(lù)上應當設置安全閥等保護裝(zhuāng)置，這(zhè)樣(yàng)一旦泵的出口通道發(fā)生堵(dǔ)塞，就可以打開安全閥卸壓。對于需要正反轉的高粘度齒輪泵，其進出(chū)口管路上均需設置安全閥。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、工作壓力的選定1, select the work pressure

　　高粘度泵額定(dìng)的(de)壓力是指泵連續工作時的最(zuì)高許用壓力，而其工作壓力則決定于外部負載，安裝(zhuāng)和(hé)調(diào)試的壽命與其工作壓力(lì)直接相關(guān)。對于不頻繁工作的齒輪泵，其工作壓力可取為泵的額定壓力，考慮到産品質(zhì)量不同，最好将額定壓力降(jiàng)低20%～30%使用。對于經常工作于較高壓力下的齒輪泵，其工作壓力(lì)應比泵的額定壓力低1～2個(gè)壓力級。石油化工設備常常是24小時連續運轉，這時泵的工作壓力應該取得比(bǐ)額(é)定壓力低得多，且工作轉速也應該低于額定轉速(sù)。如果(guǒ)高粘度齒輪泵的工作壓力調整過高，則會使齒輪泵在超負荷下運行。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.安裝與試運轉(zhuǎn)2. Installation and commissioning

　　高粘度泵的支座或法蘭與其(qí)驅動電機應采用(yòng)共同(tóng)的安裝基礎，基礎(chǔ)、法蘭或支(zhī)座均需(xū)具(jù)有足夠的剛度，以減小齒輪泵運轉時産生的振動(dòng)和噪聲。電動機與齒輪泵須用(yòng)彈性聯軸(zhóu)器連(lián)接，同軸度小于0.1毫米，傾斜(xié)角不得大于1度。安裝聯軸器時不得(dé)用(yòng)錘敲(qiāo)打(dǎ)，以免傷害齒(chǐ)輪泵的齒輪(lún)等零件。若(ruò)用帶輪(lún)、鍊輪等驅動時應設托架支承，以防主動齒輪(lún)軸承受(shòu)徑向力。緊固齒輪泵、電動機的地腳(jiǎo)螺釘時，螺釘受力應均勻，連接可靠。用手轉動聯軸器時，應感覺到(dào)齒輪(lún)泵能夠輕松地轉動(dòng)，沒有卡緊等異常現象出現，然後才可以配管。高粘度齒輪泵的吸油管(guǎn)道内徑應(yīng)足夠大，并避免狹窄通道(dào)或急劇拐(guǎi)彎、彎(wān)頭，去除不(bú)必要的(de)閥門、附件，盡可能地降低泵的安裝高(gāo)度，縮短吸油管(guǎn)道的(de)長度，以減少(shǎo)壓力損失。管接頭等(děng)元件的密封要(yào)良好，以防止(zhǐ)空氣侵入，從而控制(zhì)氣穴與氣蝕的發生(shēng)。在開始運轉前，往齒輪泵的殼(ké)體内(nèi)灌滿(mǎn)待輸送的液體，便于(yú)安全動。若(ruò)環境溫度低于冰點，應預先向泵内(nèi)通入(rù)熱蒸汽，進(jìn)行預熱處理，然後才可啟動齒輪泵。齒(chǐ)輪(lún)泵的旋轉方向要與進、出油口相(xiàng)符。齒輪泵若是第(dì)一次運行，或長期閑置後再使(shǐ)用，最好在空載或小負(fù)荷情況(kuàng)下先跑合一小時左右。如果在(zài)跑合階段預先(xiān)覺出異常溫升、洩漏、振動和噪聲時，應機檢查(chá)。高粘度泵的出口管路上還應當設置安全閥等保(bǎo)護裝置，這(zhè)樣一旦(dàn)泵的出口通道發生堵塞，就可以打開安全閥卸壓。對(duì)于需要正(zhèng)反轉(zhuǎn)的高粘度齒輪泵，其進出口管路上均需設置(zhì)安全閥。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.