Industry News

In industrial process systems, the shutdown of a centrifugal pump does not mean the end of maintenance work—on the contrary, correct operation and maintenance after shutdown are often the key to ensuring the long-term stable operation of the equipment. Whether it is planned maintenance, seasonal shutdown, or emergency shutdown due to failure, neglecting the post-shutdown processing steps can easily lead to serious problems such as corrosion, crystallization blockage, shaft bending, seal failure, and even pump body freezing and cracking.

In fields such as industrial fluid transportation, municipal water supply, and water conservancy projects, pumps serve as core fluid machinery. Their selection directly impacts system operational efficiency, energy consumption costs, and stability. Among them, multistage pumps and single-stage pumps are the two most widely used categories, and many users often face the dilemma of "which one to choose" during selection. First, here is a core conclusion: The key advantages of single-stage pumps lie in their simple structure, low cost, and convenient maintenance, making them suitable for scenarios requiring low head and large flow rates. In contrast, multistage pumps achieve high head through series-connected impellers, making them ideal for high-pressure and long-distance transportation needs. Below, we will elaborate on each aspect to help you understand the underlying logic.

In industries such as food, pharmaceuticals, cosmetics, and fine chemicals, glycerin, as a high-value, high-viscosity, and hygroscopic polyol medium, is widely used as a humectant, solvent, sweetener, or reaction intermediate. However, glycerin's physical properties (viscosity up to 1400 cP at room temperature) impose strict requirements on transportation equipment—ordinary centrifugal pumps are prone to slipping, cavitation, unstable flow, and other issues. So, what is the preferred pump for transporting glycerin? This article will systematically explain the scientific selection strategy for glycerin transfer pumps.

Sludge, an inevitable byproduct of industrial and municipal wastewater treatment, poses severe challenges to traditional pumping equipment due to its high viscosity, high solid content, strong abrasiveness, and complex rheological properties. Among various pump types, the sludge progressive cavity pump (PCP), with its unique positive displacement principle and outstanding performance, has become the preferred solution in the field of sludge transportation. Today, combining laboratory data and on-site operating conditions, we deeply analyze the four core application scenarios of single-screw pumps.

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.