Measures to improve the operating life of high-pressure gear pumps

High-pressure gear pumps play a critical role in the polyester production process, particularly in the delivery, pressurization, and metering of molten polymer. These pumps are known for their compact design, high reliability, energy efficiency, and ability to handle large volumes of melt. Compared to other types of melt pumps, they offer better melt-to-melt consistency with minimal shear stress. This ensures stable flow even at high viscosity and pressure, without any outlet pressure fluctuations. Their unique performance makes them indispensable in modern polyester manufacturing. To extend the service life of high-pressure gear pumps, several key maintenance practices should be followed: 1. During installation, it's important to provide hinged supports on the piping when the system is in a cold state. This prevents misalignment caused by thermal expansion after heating. 2. The coupling should only be engaged once the pump has been properly warmed up. This helps avoid excessive torque that could damage the motor or pump components during operation. 3. A pressure alarm should be set at the outlet of the pump. If the discharge line becomes blocked, the pump can suffer serious damage due to overpressure. 4. When starting the pump, avoid increasing the speed too quickly if the outlet flow hasn't been established. This can cause premature wear on the shaft or bearings. 5. Do not use the pump to circulate cleaning solutions. After cleaning, all internal parts should be removed to prevent foreign particles from entering the pump and causing blockages or damage. 6. The temperature of the heat medium jacket around the pump can be slightly lower than that of the casing. This helps reduce melt temperature rise caused by friction and shearing, which can lead to degradation. Lowering the bearing zone temperature significantly improves the pump’s load capacity, allowing for a 50% increase in output without needing a larger pump. 7. Gradually increase the speed to avoid sudden pressure spikes that could damage the bearings or clog the lubrication system. 8. Regularly replace the melt filter located after the pump outlet. Avoid operating the pump at maximum pressure for extended periods, as this can shorten its lifespan. By following these guidelines, operators can ensure optimal performance and longevity of high-pressure gear pumps in polyester production systems. Article from: http://NewsDetail253T2.html China Hardware Business Network http://news.chinawj.com.cn Editor: (Hardware Business Network Information Center) http://news.chinawj.com.cn

Bluetooth Water Meter

Bluetooth Water Meter,Water Meter Connection,Ic Card Prepayment Meter,Photoelectric Reading Water Meter

Shandong xuheng instrument co., ltd , https://www.sdxuhengmeter.com