③When pump severely damaged or worn parts will produce vibration and noise: like the gear tooth pitch error, bad connection of two gears, tooth surface roughness high, too small backlash, the contact area not in the two gear pitch circle location, etc. In this case, replace the gear or grinding the gear. Meanwhile, needle roller bearing cage damaged, the length of the shaft journal and needle wear, can also lead to poor bearing rotation, thus produces mechanical noise, in this situation, it’s suggested for an overhaul, replacement of needle bearings.
④Gear assembly axial gap is too small; sliding gear face contact between the front and rear cover, due to failure to remove the burr carefully before assembly, thus strained joints during operation, and cause a large leak inside and output flow is reduced; dirt entering the pump and wedging between the front and rear cover of the gap, strain the surface, resulting in high and low pressure chamber due to the occurrence of radial strain and communication trenches, so that the output flow is reduced.
The above situation should adopt the following measures to repair. Dismantling gear pumps, appropriately increase axial clearance gap; use grinding cover face and gear face in order to remove the burr (not chamfer) on the tooth; after grinding, end face of the unloading groove depth dimension will vary, thus width should be increased accordingly.
Honghai pump.
2015年1月28日星期三
Thermal Oil Pump-Common Ways to Remove Breakdowns II
Thermal Oil Pump-Common Ways to Remove Breakdowns II
(2) Mechanical reasons
①If connection between pump and coupling, due to irregularities, cause vibration and noise. It’s required to revise the coupling.
②When the dirt in oil enter into the gear oil pump, the oil pump gears and other parts get wear, thus generating noise. It’s suggested to change oil, strengthen the filter, and disassemble the pump for cleaning; for the badly worn gear, the gear should be repaired or replaced.
③When pump severely damaged or worn parts will produce vibration and noise: like the gear tooth pitch error, bad connection of two gears, tooth surface roughness high, too small backlash, the contact area not in the two gear pitch circle location, etc. In this case, replace the gear or grinding the gear. Meanwhile, needle roller bearing cage damaged, the length of the shaft journal and needle wear, can also lead to poor bearing rotation, thus produces mechanical noise, in this situation, it’s suggested for an overhaul, replacement of needle bearings.
④Gear assembly axial gap is too small; sliding gear face contact between the front and rear cover, due to failure to remove the burr carefully before assembly, thus strained joints during operation, and cause a large leak inside and output flow is reduced; dirt entering the pump and wedging between the front and rear cover of the gap, strain the surface, resulting in high and low pressure chamber due to the occurrence of radial strain and communication trenches, so that the output flow is reduced.
The above situation should adopt the following measures to repair. Dismantling gear pumps, appropriately increase axial clearance gap; use grinding cover face and gear face in order to remove the burr (not chamfer) on the tooth; after grinding, end face of the unloading groove depth dimension will vary, thus width should be increased accordingly.
Honghai pump.
③When pump severely damaged or worn parts will produce vibration and noise: like the gear tooth pitch error, bad connection of two gears, tooth surface roughness high, too small backlash, the contact area not in the two gear pitch circle location, etc. In this case, replace the gear or grinding the gear. Meanwhile, needle roller bearing cage damaged, the length of the shaft journal and needle wear, can also lead to poor bearing rotation, thus produces mechanical noise, in this situation, it’s suggested for an overhaul, replacement of needle bearings.
④Gear assembly axial gap is too small; sliding gear face contact between the front and rear cover, due to failure to remove the burr carefully before assembly, thus strained joints during operation, and cause a large leak inside and output flow is reduced; dirt entering the pump and wedging between the front and rear cover of the gap, strain the surface, resulting in high and low pressure chamber due to the occurrence of radial strain and communication trenches, so that the output flow is reduced.
The above situation should adopt the following measures to repair. Dismantling gear pumps, appropriately increase axial clearance gap; use grinding cover face and gear face in order to remove the burr (not chamfer) on the tooth; after grinding, end face of the unloading groove depth dimension will vary, thus width should be increased accordingly.
Honghai pump.
2015年1月21日星期三
Soaps and Detergents
Honghai internal gear pumps used in the soaps and detergents industry has been proven with years of practices.
As it’s known to all that the soap and detergent chemistry is a with special requirements for pumps because of it’s mixing kinds of chemicals or their own special recipes. Thus special and featured pumps are in demand in it’s production. Honghai Pumps Ltd has the ability to produce such special pumps, such as stainless steel pumps, internal gear pumps, external gear pumps and industrial gear lobe pump for detergents and soaps manufacturing, transportation, packing, and some sensitive fields.
Working principle of Honghai Detergents Pumps
Two gears in internal gear pump coming in and out so as to produce flow. While at the same time, two identical gears rotating against each other, one gear is driven by motor and drive the other gear. Both gears are supported by shaft with quality bearing.
Step one
As the gears come out of the mesh, they will create expanding volume on the inlet side of Honghai internal gear pump. And then, the liquids will flow into the chamber and will be trapped by the gear teeth when they rotate.
Step two
Liquids travel around the inner side of the casing in the pockets between the teeth and the casing - which doesn’t pass between the gears.
Step three
At last, the mesh of the gears forces liquids through the outlet under pressure. Because of the gears supported from both sides, the Honghai external gear pumps are quiet- running and are routinely used for high-pressure applications. With no overload bearing loads, the rotor shaft won’t deflect and cause earlier wearing.
Feel free to contact Honghai Pump Ltd, and you will find the proper solution for your detergent and soaps chemistry.
Soap applications handled by Honghai pumps include:
Step one
As the gears come out of the mesh, they will create expanding volume on the inlet side of Honghai internal gear pump. And then, the liquids will flow into the chamber and will be trapped by the gear teeth when they rotate.
Step two
Liquids travel around the inner side of the casing in the pockets between the teeth and the casing - which doesn’t pass between the gears.
Step three
At last, the mesh of the gears forces liquids through the outlet under pressure. Because of the gears supported from both sides, the Honghai external gear pumps are quiet- running and are routinely used for high-pressure applications. With no overload bearing loads, the rotor shaft won’t deflect and cause earlier wearing.
Feel free to contact Honghai Pump Ltd, and you will find the proper solution for your detergent and soaps chemistry.
Soap applications handled by Honghai pumps include:
2014年12月30日星期二
Gear pumps positioning and correction
Gear pumps positioning and correction, which means that the gear pump is placed on the basis according to the foundation's vertical and horizontal centerline in order to meet the requirements. During installation of the gear pump, for most small and medium gear pump, it will share a base with the motor. In installing, it all takes overall installation method, i.e., after completion of the above preparations, the pump and the motor frame and integrally with smooth to hang on to the base, and then look for the positive and leveling. For large gear pump, it is generally first positioning the hoisting machine and adjust the seat after a good central location and level of degree, and then pumps and motors lifting to the frame to adjust the level of the coupling shaft distance and so on.
Elevation adjustment and Levelling
1) Elevation adjustment
Measurement and elevation Benchmarks (commonly known as zero) of elevation relative (positive or negative) called the elevation. The elevation of the absolute elevation and relative elevation. The absolute elevation is at sea level zero, and the height difference of sea level, called the absolute elevation; relative elevation is a elevation benchmarks for zero point - when, with the benchmark height difference is called the relative elevation value. The project mainly by the relative elevation, said the habit of elevation.
Elevation adjusting gear oil pump is intended to facilitate pump and pipeline connections, in general, its elevation to the center line of the shaft for measuring the t-point, calibration of the pump to the foundation level as measured on the basis of the reference, the measurement device communicating with the liquid level. For the more stringent requirements of the pump, its elevation adjustment is measured with a level. Gear pump elevation deviation should be allowed to meet the provisions of table 6 - 5. The large deviation can be adjusted through the temporary pad iron. The large deviation can be adjusted through the temporary pad iron.
2) Levelling
Gear pump beginning to find the level of degree elevation can make looking after, but also at the same time, it is by adjusting the level of temporary horn to adjust its level degrees. Measure the level of precision gear pump adjustment application is 0.02mm / m level meter or accuracy of 0.05mm / m level meter, on the surface of the pump outlet flange or shaft. Horizontal split pump, can be placed in the horizontal level instrument in measuring or on the surface of the pump shaft and the inlet and outlet flange surface. Gear pumps levelness tolerance: the overall installed pumps, vertical deviation should not exceed the level of 0.1 / 1000, the level of the lateral deviation should not exceed 0.2 / 1000; For the longitudinal and transverse horizontal pumps installed disintegration deviation not greater than 0.05 / 1.
Honghai pump.
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