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What are the common faults of a double gear pump, and what are the solutions?
2025-10-15
The double gear pump is a commonly used hydraulic transmission device, and its common faults mainly include the following:
Leakage Issues: During operation, the tandem gear pump is prone to leakage problems. The causes of leakage may include aging, wear, or damage to the seals, as well as manufacturing defects in the pump itself. To address this issue, it’s essential to inspect the condition of the seals, promptly replace any worn or damaged components, and ensure that the pump meets quality standards.
Bearing Failure: The bearings in the tandem gear pump are frequently moving components, making them prone to wear, cracking, and other issues. There are many factors that can lead to bearing failure, such as harsh operating environments, inadequate lubrication, or excessive loads during operation. To address this problem, it’s essential to regularly inspect the condition of the bearings, promptly add the right amount of lubricant, and avoid operating under conditions of excessive load.
Cavitation phenomenon: When operating, a tandem gear pump may experience cavitation, which can reduce the pump's efficiency—or even cause it to stop working altogether. There are several causes of cavitation, including blockages in the supply lines, insufficient liquid intake by the pump, or poor sealing performance of the pump itself. To address this issue, check whether the supply lines are clear and unobstructed, ensuring the pump can draw liquid properly, and also inspect the pump's sealing performance to confirm there are no leaks.
Excessive Noise: A twin-gear pump may generate noise during operation. The cause of excessive noise could be worn bearings, unbalanced gears, or poor-quality pump materials. To address this issue, check and replace any worn bearings, balance the weight of the gears, or upgrade the pump materials to minimize noise.
Temperature Rise Issue: During operation, the dual-gear pump generates considerable heat, which can easily lead to overheating and disrupt the pump's normal performance. This temperature rise issue may stem from an improperly designed pump volume, unsuitable materials for the operating environment, or an inadequate cooling system. To address this problem, one effective approach is to redesign the pump's structural geometry, select appropriate materials, and enhance the cooling system to improve heat dissipation efficiency.
Overall, the common faults of a duplex gear pump mainly involve leakage, bearings, cavitation, noise, and temperature rise. To address these issues, it is essential to regularly inspect and replace worn or aged components, ensure the pump meets quality standards, add an appropriate amount of lubricant, keep the fluid supply lines unobstructed, and improve the pump's design as well as its cooling system. The duplex gear pump manufacturer emphasizes that, with proper measures taken and timely troubleshooting, the pump can maintain reliable operation and enjoy an extended service life.
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