●高粘度齒輪泵并不能產生壓力，它只是輸出流量。壓力低或無壓力，說明高粘度齒輪泵沒有吸入液體或泄漏嚴重。High viscosity gear pump does not generatepressure, it is only the output flow.Pressure is low or no pressure, highviscosity gear wheel pump don't inhale the liquid or leakage is serious.

　　電動機輸出功率偏小、齒 輪泵排量選得過大或壓力調得過高時，也會造成壓力不足 當然，壓力表損壞或壓力表節流孔堵塞時也顯示不出壓力，此時可換裝一個新的壓力表檢查。Small motor output power, gear wheel pump capacity to choose toolarge or pressure too high, can cause stress Pressure gauge damage or pressuregauge orifice jams, of course, also could not show pressure, can change a newpressure gauge to check at this time.

　　如果確認泵無流量輸出，可能是由于泵安裝有誤、泵的轉向不對，或吸人側(進液口及吸液管道)堵塞、出口止回閥裝反或卡死了，也有可能是驅動軸斷裂了。If confirmedthat no flow pump output, could be turned to the pumps due to pump installationis wrong, wrong, or suction side (liquid into the mouth and suck liquidpipeline jam, export check valve installed backwards, or card is dead, it ispossible that the drive shaft fracture.

　　高粘度泵在轉速過低時會引起出液量不足，這種現象往往是由于泵的驅動裝置打滑或功率不足所致。此時應檢查齒 輪泵的實際轉速、泵與電動機的聯接及功率匹配情況等。High viscosity pump in low speed can cause insufficient quantity ofproduced liquid, this phenomenon is often due to the slippage of the pump driveor insufficient power.Check the gear wheel pump at this time of the actualspeed, pump and motor connection and power matching, etc.

    ●高粘度泵在開始運轉前，往齒輪泵的殼體內灌滿待輸送的液體，便于安全啟動。若環境溫度低于冰點，應預先向泵內通入熱蒸汽，進行預熱處理，然后才可啟動齒輪泵。高粘度泵的旋轉方向要與進、出油口相符。齒輪泵若是第一次運行，或長期閑置后再使用，最好在空載或小負荷情況下先跑合一小時左右。如果在跑合階段預先覺察出異常溫升、泄漏、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基礎，基礎、法蘭或支座均需具有足夠的剛度，以減小齒輪泵運轉時產生的振動和噪聲。電動機與齒輪泵須用彈性聯軸器連接，同軸度小于0.1毫米，傾斜角不得大于1度。安裝聯軸器時不得用錘敲打，以免傷害齒輪泵的齒輪等零件。若用帶輪、鏈輪等驅動時應設托架支承，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，連接可靠。用手轉動聯軸器時，應感覺到齒輪泵能夠輕松地轉動，沒有卡緊等異常現象出現，然后才可以配管。High viscosity pump before starting work, to gear pump casing filledwith liquid, facilitate safe launch.If the environment temperature is belowfreezing, should advance to pump into the hot steam, preheating treatment, andthen to start the pump.The direction of rotation of the pump with highviscosity, oil outlet in accord.Gear pump is the first run, or long-term idlebefore using, had better under the condition of no load or small load to runone hour or so.If in the running-in stage in advance detect abnormaltemperature rise, leakage, vibration and noise, should stop check.High viscositygear pump bearing or flange should adopt a common drive motorinstallationFoundation, foundation, flange or support all needs to have enoughrigidity, to reduce the vibration of gear pump is running and noise.Motor andgear 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 shallnot be used, in order to avoid damage of the gear pump gearAnd other parts.Ifuse the belt wheel, wheel, etc, shall set bracket support, in case of drivinggear bearing by the radial force.Ground screw fastening gear pump, motor, screwforce should be uniform, reliable connection.Turn the coupling with the hand,should feel can easily turn the gear pump, no abnormal phenomenon such asclamping, then can be piping.

     高粘度齒輪泵的吸油管道內徑應足夠大，并避免狹窄通道或急劇拐彎、減少彎頭，去除不必要的閥門、附件，盡可能地降低泵的安裝高度，縮短吸油管道的長度，以減少壓力損失。管接頭等元件的密封要良好，以防止空氣侵入，從而控制氣穴與氣蝕的發生。止回閥與安全閥在齒輪泵的輸出管路上最好安裝一個止回閥。這樣在檢修泵及輸出管道時，系統中的液體不會發生倒流。齒輪泵帶負荷停車時，亦可防止泵倒轉而在其輸出管道內產生局部真空。應當注意，出口止回閥不能裝反或出現卡死現象。高粘度泵的出口管路上還應當設置安全閥等保護裝置，這樣一旦泵的出口通道發生堵塞，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。對于需要正反轉的高粘度齒輪泵，其進出口管路上均需設置安全閥。High viscosity gear pump oil suction pipe diameter should be largeenough, and to avoid the narrow channel, or a sharp turn, reducing elbow,remove unnecessary valves, fittings, as much as possible to reduce theinstallation height of pump, shorten the length of the oil suction pipe, inorder to reduce the pressure loss.Components, such as pipe joint sealed well,in order to prevent the air intrusion, thus control air-pocket and theoccurrence of cavitation.Check valve and relief valve on the output of the gearpump tube had better install a check valve.In the overhaul pump and outputpipe, the system of fluid backflow will not occur.Gear pump to stop loadingmachine, can be in the output pipe to prevent pump reverse, and create apartial vacuum.It should be noted that the outlet check valve cannot beinstalled backwards or stuck.High viscosity of the pump outlet pipe also shallset up relief valve or other protective device on the road, so that once theclogging pump export channels, can open the relief valve pressure relief.Therelief valve can be cast and pump body and pump cover, also can separateassembly.For high viscosity gear pump need positive &negative, import andexport all needs to set up the line safety valve.

   高粘度泵是輸送高粘度液體的齒輪泵，應做到在較低的功耗、較少的泄漏、較大的壓力下輸出最多的流量。在確定所要輸送的介質時，應該嚴格遵循產品說明書上的規定，盡量使用廠家推薦的流體介質，并注意考慮系統的工作溫度范圍。當希望在某一較寬的溫度范圍內使用時，輸送介質的粘度指數應該高些。輸送介質不僅是能量傳遞的中介，而且也是潤滑、密封及傳熱介質。液體粘度過高會增加內摩擦阻力，降低輸出功率，浪費能量，并產生過高的系統溫度.高粘度齒輪泵的出口管路上應當設置安全閥等保護裝置，這樣一旦泵的出口通道發生堵塞，就可以打開安全閥卸壓。對于需要正反轉的高粘度齒輪泵，其進出口管路上均需設置安全閥。High viscosity pump is conveying liquid with high viscosity gearpump, should be in lower power consumption, less leakage, under the pressure oflarge output the most traffic.When determining to conveying medium, we shouldstrictly follow the provisions of the product manuals on use manufacturersrecommend fluid as far as possible, and pay attention to consider the systemoperating temperature range.When you want to use in a wide temperature range,medium viscosity index should be higher.Medium is not only the energy transferintermediary, but also lubrication, sealing and heat transfer medium.Liquidviscosity is too high will increase internal friction resistance, lower outputpower, waste of energy, and generate high temperature system. High viscositygear pump outlet pipe shall set up relief valve or other protective device onthe road, so once the clogging pump export channels, can open the relief valvepressure 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

　　高粘度泵額定的壓力是指泵連續工作時的最高許用壓力，而其工作壓力則決定于外部負載，安裝和調試的壽命與其工作壓力直接相關。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，考慮到產品質量不同，最好將額定壓力降低20%～30%使用。對于經常工作于較高壓力下的齒輪泵，其工作壓力應比泵的額定壓力低1～2個壓力級。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額定壓力低得多，且工作轉速也應該低于額定轉速。如果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 allowablepump continuous work pressure, and its working pressure is determined by theexternal load, installation and commissioning of life is directly related withwork pressure.For not frequent work gear pump, the working pressure isdesirable for the rated pressure of the pump, taking the quality intoconsideration, it is best to used pressure rated lower 20% ~ 30%.For often workunder high pressure gear pump, the working pressure shall be lower than therated pressure of the pump 1 ~ 2 pressure level.Petrochemical equipment areoften 24 hours of continuous operation, and at this time of the pump workingpressure should be obtained was much lower than the rated pressure, and thework speed should be lower than the rated speed.If the high viscosity gear pumphigh pressure adjustment, will make the pump running under overload.

　　2.安裝與試運轉2. Installation andcommissioning

　　高粘度泵的支座或法蘭與其驅動電機應采用共同的安裝基礎，基礎、法蘭或支座均需具有足夠的剛度，以減小齒輪泵運轉時產生的振動和噪聲。電動機與齒輪泵須用彈性聯軸器連接，同軸度小于0.1毫米，傾斜角不得大于1度。安裝聯軸器時不得用錘敲打，以免傷害齒輪泵的齒輪等零件。若用帶輪、鏈輪等驅動時應設托架支承，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，連接可靠。用手轉動聯軸器時，應感覺到齒輪泵能夠輕松地轉動，沒有卡緊等異常現象出現，然后才可以配管。高粘度齒輪泵的吸油管道內徑應足夠大，并避免狹窄通道或急劇拐彎、彎頭，去除不必要的閥門、附件，盡可能地降低泵的安裝高度，縮短吸油管道的長度，以減少壓力損失。管接頭等元件的密封要良好，以防止空氣侵入，從而控制氣穴與氣蝕的發生。在開始運轉前，往齒輪泵的殼體內灌滿待輸送的液體，便于安全動。若環境溫度低于冰點，應預先向泵內通入熱蒸汽，進行預熱處理，然后才可啟動齒輪泵。齒輪泵的旋轉方向要與進、出油口相符。齒輪泵若是第一次運行，或長期閑置后再使用，最好在空載或小負荷情況下先跑合一小時左右。如果在跑合階段預先覺出異常溫升、泄漏、振動和噪聲時，應機檢查。高粘度泵的出口管路上還應當設置安全閥等保護裝置，這樣一旦泵的出口通道發生堵塞，就可以打開安全閥卸壓。對于需要正反轉的高粘度齒輪泵，其進出口管路上均需設置安全閥。High viscosity pump bearing or flange and its drive motor should usecommon installation basis, foundation, flange or support all needs to haveenough rigidity, to reduce the vibration of gear pump is running andnoise.Motor and gear pump with elastic shaft coupling, coaxial degree is lessthan 0.1 mm, Angle shall not be greater than 1 degree.When installing couplinghammer shall not be used, in order to avoid damage gear and other parts of thegear pump.If use the belt wheel, wheel, etc, shall set bracket support, in caseof driving gear bearing by the radial force.Ground screw fastening gear pump,motor, screw force should be uniform, reliable connection.Turn the couplingwith the hand, should feel can easily turn the gear pump, no abnormalphenomenon such as clamping, then can be piping.High viscosity gear pump oilsuction pipe diameter should be large enough, and to avoid the narrow channel,or a sharp bend, bend, remove unnecessary valves, fittings, as much as possibleto reduce the installation height of pump, shorten the length of the oilsuction pipe, in order to reduce the pressure loss.Components, such as pipejoint sealed well, in order to prevent the air intrusion, thus controlair-pocket and the occurrence of cavitation.Before starting operation, to gearpump casing filled with liquid, easy to safety.If the environment temperatureis below freezing, should advance to pump into the hot steam, preheatingtreatment, 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 beforeusing, had better under the condition of no load or small load to run one houror so.If in the running-in stage in advance the abnormal temperature rise,leakage, vibration and noise, should machine inspection.High viscosity of thepump outlet pipe also shall set up relief valve or other protective device onthe road, so that once the clogging pump export channels, can open the reliefvalve pressure relief.For high viscosity gear pump need positive &negative,import and export all needs to set up the line safety valve.

    ●如何選型Howto choice

    選擇高粘度泵時應該注意泵所輸送的具體粘度、工作溫度、介質比重、介質成分等等，只有更好的了解高粘度泵所輸送的介質情況才能更好的選擇所需要的高粘度泵產品。

Should be paid attention to when selecting highviscosity pump pump delivery by the specific viscosity, working temperature,the proportion of medium, medium composition etc., only a better understandingof the high viscosity pump transmission medium condition can better choose therequired high viscosity pump product.

　　第一、必須了解高粘度泵所輸送的介質粘度。因為介質粘度的高低直接影響到選擇高粘度泵的轉速。mustunderstand the high viscosity pump transmission medium viscosity. Because themedium viscosity directly affects the choice of high viscosity pump speed.

　　第二、了解高粘度泵所輸送介質的性質，例如有沒有腐蝕性。understand the nature of thehigh viscosity pump conveying medium, such as corrosive.

　　第三、高粘度泵所輸送的介質濃度多少、比重多少。 high viscosity pump how far theconveying medium concentration, specific gravity.

Fourth,

　　第四、高粘度泵所輸送的介質。high viscosity pump transmission medium.

　　第五、高粘度泵輸送的介質常溫下是否結晶或凝固。the high viscosity pump whetherthe medium temperature of crystallization or coagulation.

　　第六、高粘度泵所輸送的介質是否有懸浮物。the transmission medium for highviscosity pump suspension.

　　第七、高粘度泵所輸送介質受溫度變化情況。high viscosity pump conveying mediumaffected by temperature changes.

　　第八、高粘度泵所輸送介質的潤滑性、清潔度、腐蝕性等。high viscosity pump medium bylubricity, cleanliness, corrosion resistance, etc.

　　第九、高粘度泵要求進口壓力及出口壓力和安裝高度。 high viscosity pump inletpressure and outlet pressure and the installation height.

　　第十、高粘度泵使用場合的防爆要求。high viscosity pump occasions ofexplosion-proof requirements.