What is the difference between a melt pump and a metering pum
In the plastic, synthetic fiber, rubber and other extrusion molding industries, melt pumps and metering pumps are often confused. But in reality, the two are not the same concept, but have a clear subordinate relationship - the melt pump is an "exclusive member" customized for special working conditions in the metering pump family.
The melt pump is a volumetric gear pump designed specifically for high-temperature, high viscosity polymer melts, and can be regarded as the "core gatekeeper" in the precision measurement process of extrusion production lines. It can not only accurately control the melt flow rate to ensure that the thickness, uniformity and other indicators of the extruded product are stable and meet the standards, but also has the functions of boosting and stabilizing pressure, which can effectively overcome the pressure fluctuations of the melt during transportation and provide stable power support for subsequent molding processes. Due to its outstanding performance in the measurement process, the melt pump is often referred to as the "melt metering pump" in the industry.
And metering pump is a broader concept, referring to all pump bodies that can achieve precise flow control. Structurally, it includes various types such as plunger type, diaphragm type, gear type, etc; In terms of application scenarios, its presence covers many fields such as chemical, pharmaceutical, water treatment, food and beverage, and its applicable media range from low viscosity water and pharmaceuticals to high viscosity pastes and slurries, almost covering the vast majority of industrial production scenarios that require precise quantitative transportation.
In short, the melt pump is a special category of metering pumps, which is a specialized equipment tailored for high-temperature and high viscosity melt processes. It integrates the three core functions of metering, boosting, and stabilizing. Although there is an intersection between the two due to their "measurement" function, there are significant differences in their applicable scenarios and functional positioning, and they cannot be directly equated. Clarifying the difference between the two can help practitioners make more accurate judgments in equipment selection and production line construction, ensuring production efficiency and product quality.
Email: sale@meltpump.com
WhatsApp: +86 158 3833 1071