The compact reactor melt pump is a high-precision device specifically designed for conveying polymer materials, chemical feedstocks, and specialty fluids. Typically integrated with reactors, it ensures stable delivery of high-temperature, high-viscosity melts to downstream processes. Its core function is to overcome the limitations of traditional gear pumps or screw pumps under high-pressure, high-temperature conditions. Through a precision mechanical structure, it achieves controllable flow rates with minimal pulsation, finding extensive application in plastic pelletizing, chemical fiber spinning, rubber processing, and other fields.
The melt pump primarily consists of the pump body, drive gear, driven gear, bearing system, heating device, and sealing components.
Gear Design: Utilizes involute helical gears or herringbone gears to minimize pulsation and enhance volumetric efficiency (up to 95%+).
Temperature Control System: Incorporates built-in electric heating rods or thermal oil jackets to maintain melt temperatures between 150–400°C, preventing material solidification.
Sealing Technology: Combines mechanical seals with reverse-thread sealing structures to prevent melt leakage under high pressure.
During operation, the motor drives the drive gear, which pushes the melt from the suction chamber to the discharge chamber through meshing action, generating a continuous and stable output flow.
High-Precision Control: Achieves ±0.5% flow accuracy when paired with variable-frequency motors, suitable for shear-sensitive materials (e.g., TPU, silicone). High-Pressure Resistance: Designed for pressures up to 40MPa. Special alloy steel materials (e.g., 38CrMoAlA) ensure long-term creep resistance.
Energy Efficiency: Volume efficiency improved by 20%-30% compared to traditional pumps, reducing energy consumption by over 15%.
Polymer Modification: Installed as a melt pump downstream of twin-screw extruders to stabilize output for pelletizing or film forming.
Chemical Fiber Spinning: Precisely controls melt spinning pressure to ensure fiber diameter uniformity (CV < 2%).
Reactor Discharge: Solves high-viscosity material transfer challenges (e.g., epoxy resin) while preventing reactor residue.
Flow Rate Matching: Calculate pump displacement (typically 0.5–200 cc/rev) based on reactor volume (common 50–500 L) and process speed.
Maintenance Interval: Inspect gear clearance (standard 0.05–0.1 mm) and replace high-temperature grease (e.g., perfluoropolyether oil) every 2000 operating hours.
Failure Prevention: Install pressure sensors for real-time monitoring to prevent equipment damage caused by melt solidification or foreign object jamming.
Through the integration of precision engineering and materials science, this equipment significantly enhances process stability and production efficiency in reactor systems, serving as a critical component in modern process industries.
Email: sale@meltpump.com
WhatsApp: +86 158 3833 1071
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TEL：+86 371 67991755
WhatsApp： +86 158 38331071
Adress: No.22 Dongqing Str., High & New Technology Development Zone, Zhengzhou, China.
