Gear pump advantages: 1) Simple structure, better technology, lower cost. 2) compared with other types of pumps of the same flow, compact structure, small size. 3) Self-priming performance is good. Self-priming is reliably achieved at high and low speeds even under manual conditions. 4) speed range. Due to the pump drive parts and gears are basically balanced, at high speeds will not produce greater inertia. 5) The dirt in the oil has a bad influence on the work and is not easy to kill. Gear pump shortcomings: 1) work pressure is low. Gear pump gears, shafts and bearings on the pressure imbalance, radial load, limiting its pressure increase. Gear pump is mainly used in low pressure system. 2) lower volumetric efficiency. This is due to the large leakage of gear pump end face. 3) large flow pulsation, causing pressure pulsations, so that pipes , valves and other vibration, noise. Causes and Solutions of Common Faults of Gear Pumps
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Gear pump advantages:
1) Simple structure, better technology, lower cost.
2) compared with other types of pumps of the same flow, compact structure, small size.
3) Self-priming performance is good. Self-priming is reliably achieved at high and low speeds even under manual conditions.
4) speed range. Due to the pump drive parts and gears are basically balanced, at high speeds will not produce greater inertia.
5) The dirt in the oil has a bad influence on the work and is not easy to kill.
Gear pump shortcomings:
1) work pressure is low. Gear pump gears, shafts and bearings on the pressure imbalance, radial load, limiting its pressure increase. Gear pump is mainly used in low pressure system.
2) lower volumetric efficiency. This is due to the large leakage of gear pump end face.
3) large flow pulsation, causing pressure pulsations, so that pipes , valves and other vibration, noise.
Causes and Solutions of Common Faults of Gear Pumps
Symptoms | cause | Method of exclusion |
| Do not hit the oil or lack of oil and the pressure is not high | 1. Motor steering error 2. Suction pipe or filter clogged 3. Axial or radial clearance is too large 4. Leakage of all connections caused by air mixed 5. Oil viscosity is too high or oil temperature is too high | 1. Correct the motor steering 2. Dredge the pipeline, clean the filter to remove the blockage, replace the new oil 3. Repair replacement parts 4. Tighten the screws on the joints to prevent leakage and prevent air from mixing in 5. Oil should be selected according to temperature changes |
| Serious noise and pressure fluctuations | 1. Partially blocked oil suction pipe and oil filter or small inlet oil filter capacity 2. Inhalation of air from suction tube or shaft seal or bubbles in oil 3. Pumps and couplings do not have a different heart or abrasion 4. The accuracy of the gear itself is not high 5. CB type gear pump oil seal damaged or installed within the framework of the oil seal within the spring off | 1. Remove dirt, smooth the suction pipe, or use a suitable oil filter 2. Add oil to the connecting area or seal. If the noise is reduced, tighten the joint or replace the seal. The oil return pipe should be below the oil surface and be at a distance from the oil suction pipe. Adjust concentric, remove abrasions 4. Replacing gears or grinding 5. Check the skeleton oil seal, replace damaged to avoid inhaling air |
| Hydraulic pump rotation is not flexible or killed | 1. Axial clearance and radial clearance is too small 2. Poor assembly, CB-type cover, poor concentricity with the shaft, long shaft spring tightening legs too long, needle sleeve quality is too poor 3. Poor coupling between pump and motor 4. Impurities in the fluid are absorbed into the pump body | 1. Repair parts 2. Reassemble as required 3. Adjust so that different axis does not exceed 0.2mm4. Prevent the surrounding sand, iron and cooling water and other objects into the oil pool, to keep the oil clean |
1. Motor steering error 2. Suction pipe or filter clogged 3. Axial or radial clearance is too large 4. Leakage of all connections caused by air mixed 5. Oil viscosity is too high or oil temperature is too high
1. Correct the motor steering 2. Dredge the pipeline, clean the filter to remove the blockage, replace the new oil 3. Repair replacement parts 4. Tighten the screws on the joints to prevent leakage and prevent air from mixing in 5. The oil should be selected according to the temperature changes of severe noise and severe pressure fluctuations 1. Partially blocked oil suction pipe and oil filter or small inlet oil filter capacity 2. Inhalation of air from suction tube or shaft seal or bubbles in oil 3. Pumps and couplings do not have a different heart or abrasion 4. The accuracy of the gear itself is not high 5. CB type gear pump oil seal damaged or installed within the oil seal skeleton within the spring off 1. Remove dirt, smooth the suction pipe, or use a suitable oil filter 2. Add oil to the connecting area or seal. If the noise is reduced, tighten the joint or replace the seal. The oil return pipe should be below the oil surface and be at a distance from the oil suction pipe. Adjust concentric, remove abrasions 4. Replacing gears or grinding 5. Check the skeleton oil seal, replace damaged to avoid inhaling air pump hydraulic rotation is not flexible or killed 1. Axial clearance and radial clearance is too small 2. Poor assembly, CB-type cover, poor concentricity with the shaft, long shaft spring tightening legs too long, needle sleeve quality is too poor 3. Poor coupling between pump and motor 4. Impurities in the fluid are sucked in the pump body. Repair parts 2. Reassemble as required 3. Adjust so that different axis does not exceed 0.2mm4. Prevent the surrounding sand, iron and cooling water and other objects into the oil pool, to keep the oil cleanCo2 Regulator,Industrial Gas Cylinder Regulator,Industrial Fan Regulator,Industrial Filter Regulator
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