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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

Grote Afbeelding :  Dual Metering Pumps Ensuring Stable Melt Flow and Uniform Product Quality

Productdetails:
Plaats van herkomst: China
Merknaam: CHUQI
Modelnummer: CQ-SPP120-6
Betalen & Verzenden Algemene voorwaarden:
Min. bestelaantal: 1SET
Verpakking Details: HOUTEN KIST
Levertijd: 60DAGEN
Betalingscondities: T/T
Levering vermogen: 10 sets
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Dual Metering Pumps Ensuring Stable Melt Flow and Uniform Product Quality

beschrijving
Hoeveelheid: 2 eenheden verplaatsing: 50cc
Aandrijfkracht: 3 kW × 2 Functie: Stabiliseer druk en stroom
Effect: Dimensionale consistentie ≤±0,05 mm Betrouwbaarheid: Overbodig ontwerp
Kernwaarde: Verbetert de productuniformiteit

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.

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Contactgegevens
Jiaxing Chuanqi Machinery Equipment Co., Ltd.

Contactpersoon: Mr. Alex

Tel.: 86-18858326160

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