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In the field of chemical fluid transportation, the stability of centrifugal pumps directly determines the Overall Equipment Effectiveness (OEE) of the entire production line. Many engineers message me privately asking: "Why did the mechanical seal on my pump start leaking just six months after commissioning?" or "The selection was correct, so why is the noise so loud?" As a fluid machinery researcher, I have found that 70% of centrifugal chemical pump failures are actually rooted in the installation phase. Today, combining years of R&D experience and engineering feedback, I have summarized the nine most common problems in the use of centrifugal chemical pumps. I recommend saving this for future reference.

In industries such as chemical engineering, pharmaceuticals, and petrochemicals that have extremely high requirements for safety and environmental protection, the sealing performance of chemical pumps is directly related to production safety, medium purity, and equipment service life. Once leakage occurs, it will not only cause the loss of expensive materials but also may lead to safety accidents or environmental pollution. So, how to achieve high sealing performance in chemical pumps? This article will deeply analyze the core technologies for achieving high sealing performance.

In industrial fluid transportation systems, screw pumps are widely used in petroleum, chemical, food, sewage treatment and other fields due to their stable flow rate, low pulsation, high self-priming capacity and good adaptability to high-viscosity/solid-containing media. The core principle of the comprehensive selection of screw pumps is to balance the investment cost of the pump unit and pump station as well as the long-term operating costs, and ultimately achieve the operational goals of economy, safety and applicability——this is the core logic that this article intends to systematically sort out for you.

In process industries such as petrochemicals, oil refining, and ethylene production, abnormal consumption of seal oil in the mechanical seal systems of centrifugal compressors or pump units not only leads to a sharp rise in operating costs but may also cause equipment shutdowns, medium contamination, and even safety accidents. So, which links have problems causing excessive seal oil consumption? And how to accurately investigate and address them? Today, combining API standards and frontline on-site practical experience, I will break down the six core reasons for abnormal seal oil consumption and their corresponding solutions.

This article focuses on the daily operation and maintenance of chemical pumps, covering key points like manual turning, vibration, bearing temperature, lubricating oil use and leakage. It details fault handling, maintenance standards and principles, emphasizing the importance of three-level filtration, five-fixed lubrication and preventive maintenance to ensure the equipment's long service life and safe operation.

In the operation of centrifugal pumps, the coupling is a core component connecting the motor and the pump shaft. Misalignment of the coupling directly affects equipment efficiency, service life, and safety. According to industry statistics, more than 60% of unplanned shutdowns of centrifugal pumps can be traced back to misalignment during coupling installation or operation.