Serious noise and pressure fluctuations:
Causes:
1. Part of the suction pipe and oil filter is clogged or inlet filter capacity is small.
2. Inhalation tube or shaft seal inhaled air bubbles.
3. Pump and coupling misalignment or abrasions.
4. Precision of gear itself is not high.
5. CB gear pump seal skeleton damage or seal skeleton falls off when install axle.
Remedies:
1. Remove dirt, so that the suction pipe flow, or switch capacity suitable filter.
2. Add a little oil in the joints or seals, if the noise is reduced, the joints can be tightened or replaced seals, oil return pipe mouth should below the surface of the oil, and the suction pipe to have a certain distance.
3. Adjustment of concentric, excluding abrasions.
4. Replace the entire training gear.
5. Check seal, when replace if damaged to prevent inhalation of air.
Pump rotation is not flexible or killed:
Causes:
1. Axial gap and radial clearance is too small.
2. Poor assembly, CB-type cover, and the concentricity of the shaft is not good, the long axis of the spring fastening feet long, the quality of needle sleeve is poor.
3. Pump and motor coupling concentricity is bad.
4. Impurities is inhaled in the oil pump body.
Remedies:
1. Repair related parts.
2. Reassemble according to the requirements.
3. Adjusted so that the different axes is not more than 0.2mm.
4. Prevent surrounding sand lime, iron and other objects of cooling water into the oil reservoir to keep the oil clean.
Honghai Pump Co., Ltd.
2015年2月8日星期日
How to exclude gear pump failure
Gear pumps are generally used for engineering machinery of dirty work environment and general machine tool accuracy is not high, and hydraulic system that the pressure is not too high and the flow is large.
Gear pump advantages:
1) Simple structure, good manufacture ability and low cost.
2) Compared with other same type of pumps, the structure of gear pump is compact, the size is small .
3) Self-priming performance is good. Both in high and low speeds even in the case of the manual can be reliably achieved self-absorption.
4) Speed range is large. Due to the transmission and a gear portion of the pump are substantially in balance, will not produce a large inertial force at high speed.
5) The dirt in the oil of their work is not serious and difficult to bite.
Gear pump disadvantages:
1) Working pressure is low. The pressure on gear, axle and gear shaft is imbalance, the load in the radial direction is large, limiting the increase off its pressure. Gear pump is mainly used in low-voltage systems.
2) A lower volumetric efficiency. This is due to the leakage of a large end face of the gear pump.
3) Flow ripple, causing pressure pulsations, which lets pipes, valves and other pieces emerge vibration and great noise.
Rotary Gear Pump Fault Causes and Remedies:
The transported oil is insufficient and pressure can’t be mentioned highly:
Causes:
1. The veer of electromotor is error.
2. Inhalation pipe or oil filter is stoppage.
3. Axial or radial gap is too large.
4. Caused by each of the junction leakage let air comes into it.
5. Oil viscosity is too high or the oil temperature is too high.
Remedies:
1. Correct motor steering.
2. Dredge pipe, cleaning filters blocking material is removed, replaced with new oil.
3. Replace and repair the related parts.
4. Tightening the screws at each connection, to avoid leaks to prevent air mixing.
5. Oil changes should be selected according to the temperature rise.
Serious noise and pressure fluctuations:
Causes:
1. Part of the suction pipe and oil filter is clogged or inlet filter capacity is small.
2. Inhalation tube or shaft seal inhaled air bubbles.
3. Pump and coupling misalignment or abrasions.
4. Precision of gear itself is not high.
5. CB gear pump seal skeleton damage or seal skeleton falls off when install axle.
Remedies:
1. Remove dirt, so that the suction pipe flow, or switch capacity suitable filter.
2. Add a little oil in the joints or seals, if the noise is reduced, the joints can be tightened or replaced seals, oil return pipe mouth should below the surface of the oil, and the suction pipe to have a certain distance.
3. Adjustment of concentric, excluding abrasions.
4. Replace the entire training gear.
5. Check seal, when replace if damaged to prevent inhalation of air.
Pump rotation is not flexible or killed:
Causes:
1. Axial gap and radial clearance is too small.
2. Poor assembly, CB-type cover, and the concentricity of the shaft is not good, the long axis of the spring fastening feet long, the quality of needle sleeve is poor.
3. Pump and motor coupling concentricity is bad.
4. Impurities is inhaled in the oil pump body.
Remedies:
1. Repair related parts.
2. Reassemble according to the requirements.
3. Adjusted so that the different axes is not more than 0.2mm.
4. Prevent surrounding sand lime, iron and other objects of cooling water into the oil reservoir to keep the oil clean.
Honghai Pump Co., Ltd.
Serious noise and pressure fluctuations:
Causes:
1. Part of the suction pipe and oil filter is clogged or inlet filter capacity is small.
2. Inhalation tube or shaft seal inhaled air bubbles.
3. Pump and coupling misalignment or abrasions.
4. Precision of gear itself is not high.
5. CB gear pump seal skeleton damage or seal skeleton falls off when install axle.
Remedies:
1. Remove dirt, so that the suction pipe flow, or switch capacity suitable filter.
2. Add a little oil in the joints or seals, if the noise is reduced, the joints can be tightened or replaced seals, oil return pipe mouth should below the surface of the oil, and the suction pipe to have a certain distance.
3. Adjustment of concentric, excluding abrasions.
4. Replace the entire training gear.
5. Check seal, when replace if damaged to prevent inhalation of air.
Pump rotation is not flexible or killed:
Causes:
1. Axial gap and radial clearance is too small.
2. Poor assembly, CB-type cover, and the concentricity of the shaft is not good, the long axis of the spring fastening feet long, the quality of needle sleeve is poor.
3. Pump and motor coupling concentricity is bad.
4. Impurities is inhaled in the oil pump body.
Remedies:
1. Repair related parts.
2. Reassemble according to the requirements.
3. Adjusted so that the different axes is not more than 0.2mm.
4. Prevent surrounding sand lime, iron and other objects of cooling water into the oil reservoir to keep the oil clean.
Honghai Pump Co., Ltd.
2015年1月20日星期二
LCW Type Lobe Pump
low rotating rate
high efficiency
small volume, big flow
low consumed power,
strong self-priming ability,
easy to operate and no oil drawing.
Gear pumps.
LCW high viscosity roots asphalt pump has low revolution, high efficiency, small size, large flow, consume less power, self-priming ability strong, need not lead oil, easy to use and can positive &negative work etc. Drive mode: belt drive and reducer connection drive two forms.
LCW high viscosity roots asphalt pump can be widely used to transport oil and oil products and transport all kinds of oils and liquid. Such as crude oil, paint, oil, glass glue, fat acid, toothpaste and weak alkali (soap processing) liquid, etc.; Food processing can transport all kinds of liquid, such as: bean paste, yeast, syrup, etc. Handling all kinds of tank car and tanker and speed, high efficiency and easy to use. The oil, chemicals, asphalt, food, urban construction, transportation and so on the profession ideal conveying equipment.
Crude industry
Lubrication industry
Paint industry
Glass glue industry
Oil ocid industry
Toothpas teindustry
Capacity:10m3/h~100 m3/h
Temperature: 140 °C~200°C
Welcome to Honghai Pump Co. ,Ltd.
LCW high viscosity roots asphalt pump has low revolution, high efficiency, small size, large flow, consume less power, self-priming ability strong, need not lead oil, easy to use and can positive &negative work etc. Drive mode: belt drive and reducer connection drive two forms.
LCW high viscosity roots asphalt pump can be widely used to transport oil and oil products and transport all kinds of oils and liquid. Such as crude oil, paint, oil, glass glue, fat acid, toothpaste and weak alkali (soap processing) liquid, etc.; Food processing can transport all kinds of liquid, such as: bean paste, yeast, syrup, etc. Handling all kinds of tank car and tanker and speed, high efficiency and easy to use. The oil, chemicals, asphalt, food, urban construction, transportation and so on the profession ideal conveying equipment.
Crude industry
Lubrication industry
Paint industry
Glass glue industry
Oil ocid industry
Toothpas teindustry
Capacity:10m3/h~100 m3/h
Temperature: 140 °C~200°C
Welcome to Honghai Pump Co. ,Ltd.
2014年12月21日星期日
Solution of entrap phenomenon of Gear Pump
Solution of entrap phenomenon of Gear Pump
As for gear pump , in order to work smoothly, the gear meshing of the coincidence degree must be greater than 1, so there are always two pairs of gears mesh at the same time, and some of the oil is trapped between two pairs of teeth surrounded by a closed cavity.
The close cavity started to decrease gradually as the gears rotate, then gradually increase. Closed chamber will reduce, which will extrude the trapped oil and cause high pressure, and then the oil will be extruded from the gap, resulting in heating oil, which will cause extra load for the spare parts; While at the same time, the closed cavity volume increases and caused a partial vacuum, so that the gas dissolved in oil separation, which causes a sudden formation. All of these above will cause a strong vibration and big noise, this is called entrap phenomenon.
The harm
When the gear oil pump radial unbalanced force is large, the shaft will be bended, and the tooth top contact with the casing, which will accelerate the bearing wear and reduced the bearing life.
The method of eliminating
The common method to eliminate the entrap phenomenon is to open the unloading groove on both sides of the cover plate, so that the closed cavity volume decreases by unloading groove and pressure oil cavity discharge on the left, the volume increases by the right side of the unloading groove and communicated with the oil absorption cavity.
Honghai will explain more info of using gear pumps and the related instructions. Keep focusing on our news and we will update soon.
2014年12月9日星期二
Introduction of Honghai Gear Pump
Honghai Pump Co., Ltd is producing
different models of gear pumps for different applications and industries. There
are KCB series external gear pump, YCB series stainless steel pump, Internal
gear pump, LYB oil gear pump, CB series heavy oil pump, ZYB series fuel pump,
LQB series bitumen pump and 2YC series gear pump.
We never stop our effort in researching and development of more kinds of gear pumps for more industries. Around decade experience in this area, we have the confidence to manufacture quality gear pumps for our dearest clients.
Honghai Gear Pump is mainly used for lubrication system of mechanical equipment. Notes of used applications:
1. Transporting kinds of oil, like heavy oil, diesel oil and lubricating oil. With copper gear, it’s able to transport those like gas and benzene. Honghai stainless steel pump can also be used to convey beverage and corrosive liquids.
Specific Areas:
Food industry
Chemical industry
Textile industry
Cosmetics industry
Road Mixing Stations
2. Pay attention, it’s not proper to use it to transport those materials with hard grains or liquids with fiber. The applicable viscosity of the normal gear pumps is 5×10-5～1.5×103m2/s. Temperature below 70℃. For necessary high temperature liquids transporting, please attend to our hot oil gear pump, which is available for temperature below 300℃.
Feel free to inquiry our gear pumps. Looking forward to your pleasant cooperation with Honghai Pump.
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