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Dual Metering Pumps Ensuring Stable Melt Flow and Uniform Product Quality

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Dual Metering Pumps Ensuring Stable Melt Flow and Uniform Product Quality

Dual Metering Pumps Ensuring Stable Melt Flow and Uniform Product Quality
Dual Metering Pumps Ensuring Stable Melt Flow and Uniform Product Quality

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Dettagli:
Luogo di origine: Cina
Marca: CHUQI
Numero di modello: CQ-SPP120-6
Termini di pagamento e spedizione:
Quantità di ordine minimo: 1SET
Imballaggi particolari: SCATOLA IN LEGNO
Tempi di consegna: 60 GIORNI
Termini di pagamento: T/T
Capacità di alimentazione: 10 set

Dual Metering Pumps Ensuring Stable Melt Flow and Uniform Product Quality

descrizione
Quantità: 2 unità spostamento: 50cc
Potenza motrice: 3KW×2 Funzione: Stabilizzare pressione e flusso
Effetto: Consistenza dimensionale ≤±0,05 mm Affidabilità: Progettazione ridondante
Valore del centro: Migliora l'uniformità del prodotto

Dual Metering Pumps Ensuring Stable Melt Flow and Uniform Product Quality
Product Introduction

Melt pressure stability is the core guarantee for dimensional uniformity of extruded products. This production line is equipped with two high-precision metering pumps (50cc) between the extruder and the die. The metering pumps smooth out pressure fluctuations caused by screw rotation through forced, pulse-free gear output, ensuring constant melt flow and stable pressure into the 1-out-6 die. This design significantly improves dimensional consistency among the 6 strands and along the product length, controlling width and thickness tolerances stably within ±0.05mm. It is a key technology for achieving high-quality, high-uniformity products.

Main Specifications
  • Number of Metering Pumps: 2 units
  • Displacement: 50cc
  • Drive Method: 4 powered drives (dual or independent per pump)
  • Motor Power: 3KW × 2 units
  • Function: Pressure stabilization, flow stabilization, eliminating extrusion pulsation
  • Installation Position: After extruder and screen changer, before die
Technical Parameters
Item Parameter / Description
Number of Pumps 2 units
Displacement per Pump 50 cc/rev
Drive Motor Power 3KW × 2 units
Working Medium PP melt
Temperature Control Independent heating, linked with extruder temp. control
Pressure Fluctuation Suppression Melt pressure fluctuation ≤±1%
Applicable Extruder φ120mm single screw
Customer Questions & Answers
Q: Why two metering pumps instead of one?
A: Two pumps in parallel or series distribute melt more evenly to the 6 channels of the 1-out-6 die. Each pump handles part of the channels, reducing the risk of uneven distribution from a single pump outlet, and provides redundancy for higher reliability.
Q: Do metering pumps increase melt pressure? Do they affect the extruder?
A: Metering pumps do create some backpressure, but they are active conveying devices, not resistance elements. With proper sizing, the pump inlet pressure remains stable, imposing no additional load on the extruder. Instead, they isolate screw fluctuations, making the extruder operate more smoothly.
Q: Do metering pumps need separate heating? How is temperature controlled?
A: Yes. The pump bodies have independent heaters, and temperature is controlled in coordination with the extruder die head temperature to prevent melt from cooling and solidifying inside the pump. Control accuracy is also ±1°C.

Dettagli di contatto
Jiaxing Chuanqi Machinery Equipment Co., Ltd.

Persona di contatto: Mr. Alex

Telefono: 86-18858326160

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