In the conveyance of rubber, elastomers, thermoplastics, and high-viscosity fluids, the selection of the appropriate pump directly impacts production line stability, metering accuracy, and product quality. Particularly in production lines for rubber extrusion, sheet, pipe, profile, film, pelletizing, and modified pelletizing, improper pump selection can easily lead to flow fluctuations, unstable pressure, accelerated pump wear, material stagnation and scorching, and even disrupt continuous production.
Tianjin Ruicheng Pump Industry Co., Ltd. is a professional manufacturer of gear metering pumps that integrates R&D, production, and sales. With a long-standing focus on the development and manufacturing of melt pumps, rubber pumps, spinning pumps, bottom-of-vessel pumps, rubber-water pumps, and pipeline booster pumps, the company provides customized conveying solutions for high-viscosity, high-temperature, high-pressure, and complex operating conditions based on the characteristics of the customer’s medium, process parameters, and on-site conditions.
When selecting a rubber pump, the first step is to thoroughly analyze the characteristics of the medium. Materials such as rubber, silicone, elastomers, and thermoplastics—including PP, PE, PVC, PET, PA, TPU, EVA, ABS, and PS—exhibit significant viscosity fluctuations under varying temperatures and process conditions, making it difficult for standard conveying equipment to ensure stable material supply.The Ruicheng RC-X Series rubber pumps and high-viscosity gear pumps utilize the positive displacement gear meshing principle to create a stable delivery chamber, enabling continuous and uniform flow. This helps address issues such as feeding difficulties, unstable flow rates, and pressure fluctuations.
At the same time, attention must be paid to the corrosiveness, abrasiveness, and heat sensitivity of the medium. Certain rubber materials and modified plastics contain carbon black, glass fiber, fillers, or additives, which may accelerate wear on the gears, bushings, and pump chamber; some materials are temperature-sensitive, and excessive heat or prolonged residence time can easily lead to degradation, scorching, or carbonization. Therefore, during selection, the pump body material, gear wear resistance, sealing type, internal clearances, and heating/insulation structure should be appropriately matched.
Regarding process parameters, the pump’s displacement and structural configuration should be determined based on production line output, material density, speed range, discharge pressure, and metering accuracy requirements. Whether for rubber extrusion, plastic extrusion, or production lines for sheets, pipes, profiles, films, and pellets, stable flow and pressure are key to ensuring product consistency. Insufficient feed at the inlet may also lead to cavitation, noise, vibration, and inadequate flow; therefore, comprehensive design should consider inlet pressure, pipeline resistance, material temperature, and on-site installation conditions.
Tianjin Ruicheng Pump Industry provides RC series rubber pumps, melt pumps, and high-viscosity gear pump solutions for the rubber, thermoplastic, chemical, synthetic fiber, and petroleum industries. These are suitable for conveying rubber, PP, PE, PVC, PET, PA, TPU, EVA, ABS, PS, resins, adhesives, and other high-viscosity polymers. Scientific pump selection not only enhances conveying stability and metering accuracy but also helps reduce equipment wear and minimize downtime for maintenance, providing reliable assurance for continuous production and product quality.
