As a prevalent type of hydraulic pump, gear pumps play an integral role in numerous industrial applications. The durability of these pumps garners significant attention due to its direct impacts on productivity efficiency, equipment upkeep expenses, and holistic operational reliability. Notably though, the longevity of gear pump usage does not remain constant — rather it is influenced by multiple variables. Following this introduction, we will proceed to examine the array of factors that contribute decisively to the lifespan expectancy of gear pumps from diverse viewpoints.
Operating conditions
Working conditions are one of the important factors that determine the service life of gear pumps. Gear pumps work in high temperature, high pressure environment, its seals are easy to aging, lubricant is also easy to failure, thus shortening the service life. In addition, the temperature of the working fluid and the degree of corrosion will also have an adverse effect on the gear pump. Therefore, when choosing gear pumps, we should fully consider the working conditions, choose the suitable models and materials, and take corresponding measures, such as installing cooling devices, using corrosion-resistant materials, etc., in order to ensure its normal operation.
Load condition
Reasonable load and usage can reduce the operating load of the pump and reduce wear and fatigue, thus prolonging the service life of the pump. In addition, avoiding operations such as overloading and frequent starting and stopping helps to protect the pump’s normal operation.
Lubrication Performance
The normal operation of the gear pump requires good lubrication conditions, which involves the quality of lubricant, oil type and refueling intervals and other factors. Long-term failure to replace the lubricant or the use of unsuitable oil will lead to increased wear of the gear pump, and even lead to failure. Therefore, regular lubricant replacement, selection of suitable oils, and ensuring reasonable refueling intervals are effective measures to extend the service life of gear pumps.
Material quality
The material quality of the gear pump is directly related to its wear resistance, fatigue resistance and other properties. For example, the hardness, strength and toughness of the gear material and other characteristics will have a direct impact on the life of the gear pump. High-quality materials can provide better wear resistance and fatigue resistance, thus extending the service life of the gear pump. Therefore, when selecting gear pumps, you should focus on the choice of materials and prioritize those with excellent properties.
Bearing design and selection
Traditional needle roller bearings are easily damaged under certain working conditions, leading to premature scrapping of gear pumps. Therefore, it is necessary to constantly explore new bearing materials and designs to improve the durability of gear pumps.The use of SF material bearings has shown that it performs well in conveying non-lubricating or poorly lubricating media, and can significantly improve the service life of gear pumps.
Oil seal leakage
The selection of oil seals and installation quality is directly related to the sealing performance of the pump. Therefore, in the selection of oil seals, should consider its material, size and sealing performance and other factors to ensure that it can adapt to the working conditions and media characteristics. At the same time, in the installation process, should be carried out in strict accordance with the operating procedures to ensure the installation quality of the oil seal.
It is worth noting that stainless steel gear pumps are often scrapped due to increased internal leakage during use. Internal leakage is mainly caused by gear end face leakage, accounting for a larger proportion of the total leakage. Therefore, reasonable end face clearance design is critical. Too small a gap will result in operation due to wear and tear so that the gap increases dramatically, which in turn increases the internal leakage; while the gap is too large will affect the pump’s volumetric efficiency and pressure. Therefore, in the design and manufacturing process, should strictly control the gear end face and the hole axis of the perpendicularity error, as well as the center distance error of the two bearing holes, to ensure that the assembly of the two shafts of the mutual position is accurate.
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In addition to the above factors, maintenance is also an important part of extending the service life of the gear pump. Regular cleaning inside the pump, replacing wearing parts, checking the sealing, etc., are all necessary maintenance measures. These measures can effectively reduce the degree of wear and tear of the gear pump and slow down its aging rate, thus extending its service life. In addition, to maintain the cleanliness of the surface of the pump components is also an important part of the maintenance work, which can prevent the failure caused by the entry of impurities and dust.
In summary, the service life of the gear pump is affected by a variety of factors, including working conditions, lubrication performance, material quality and maintenance. In order to ensure that the gear pump can work stably for a long time, users should fully consider these factors and take effective measures for prevention and maintenance. Through scientific and reasonable selection, use and maintenance, can extend the service life of the gear pump, improve production efficiency, reduce maintenance costs.
In actual application, users should also develop targeted maintenance programs according to specific use scenarios and needs. For example, in the high temperature, high pressure or corrosive media working under the environment of the gear pump, should strengthen the seals and lubricant inspection and replacement; for the need for a long time of continuous operation of the gear pump, should be regularly cleaned inside the pump and check the status of bearings and oil seals. In addition, users should also pay attention to gear pump technology updates and upgrades, in order to timely use of more advanced, more durable technology and materials, to further improve the service life and performance of gear pumps.
