Rapid Delivery for dowty double gear pump - NED Series Melt Gear Pump – Vowa

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NED Series Optimized tooth shape design, more stable conveying, minimal fluctuation Runner design without dead ends, no material residue Easier sealing method Optional wear-resistant configuration, suitable for high filling conditions Suitable for electric heating We provide a complete set of solutions for melt pumps, driving devices, control systems and supporting screen changers and die heads The NED series melt gear pump is a melt gear pump for the extrusion system of thermoplastic materi...


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Rapid Delivery for dowty double gear pump - NED Series Melt Gear Pump – Vowa Detail:

NED Series
Optimized tooth shape design, more stable conveying, minimal fluctuation
Runner design without dead ends, no material residue
Easier sealing method
Optional wear-resistant configuration, suitable for high filling conditions
Suitable for electric heating
We provide a complete set of solutions for melt pumps, driving devices, control systems and supporting screen changers and die heads
The NED series melt gear pump is a melt gear pump for the extrusion system of thermoplastic materials. It is suitable for the extrusion and transportation of thermoplastic high-viscosity polymer melt; it is generally installed between the exit of the extruder and the die and used as a melt metering pump.

NED-Serie1s

NED-Series

 

The main materials that can be conveyed by the melt gear pump are:
Thermoplastic materials and their blends
PET PBT PTT
PA6 PA66 PA12
PE LDPE LLDPE HDPE HMWPE
PP EVA PB
PB PS HIPS ABS SAN
PC PEK PMMA POM
TPU PLA PBS
Rubber and elastomer materials
NR BR CR NBR
IR IIR
SBR HNBR
EPM EPDM
PU TPU
ACM CSM
ECO SI
The application of extrusion pump in single screw extrusion system

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The application of extrusion pump in twin screw extrusion system

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The main function of the melt pump:
1. Significantly improve the stability of die pressure and improve product quality;
2. It can realize the nearly linear output of the flow, which is easy to control;
3. Increase the extrusion volume and increase the output;
4. Reduce the load of the extruder, save energy and reduce costs.
The main features of the company’s melt gear pump:
1. Very small pressure and flow pulsation, can achieve linear output of flow, suitable for precision extrusion system;
2. Use different structures and material configurations for different working conditions to better meet the individual needs of users;
3. It can be applied to the working conditions of high temperature (350℃), high pressure (40MPa) and high viscosity (40,000Pa•s);
4. Precise structure, high precision and long life.
Main structure of NED series melt gear pump:
Rotor type: helical or spur gear
Heating method: electric heating/heat medium heating
Sealing structure:
■ Dynamic melt seal + packing seal
■ Mechanical seal
■ Dynamic seal with cooling melt
Material configuration of the main structure of the melt gear pump

Material group

case

gear

bush

End plate

Features and applicable working conditions

Remarks

A

Standard

Nitrided steel

Nitrided steel

Tool steel

alloy steel

Good wear resistance, high toughness, high cost performance

Suitable for most working conditions with low abrasion

Spare parts support

H

High wear resistance

Nitrided steel

High speed steel

/coating

High speed steel

/ceramics

alloy steel

High strength, high wear resistance

Suitable for abrasive wear conditions

Need to be customized

SS

Corrosion resistant type

stainless steel

Nitrided steel

Tool steel

stainless steel

Wear-resistant and corrosion-resistant

Suitable for low corrosive conditions

Need to be customized

HS

High corrosion resistance

stainless steel

Stainless tool steel

Stainless tool steel

stainless steel

High corrosion resistance

Suitable for highly corrosive working conditions

Need to be customized

T

Special type

Special alloy

Special materials

Special materials

Special materials

High temperature resistance or high corrosion resistance

Suitable for working conditions with special requirements

Need to be customized

Main technical features of NED series melt gear pump:
1. Optimized melt flow channel design: eliminate dead corners in the flow channel, reduce polymer residues to a minimum, and improve the quality of products;
2. Improved gear parameter design: more accurate rotation displacement design makes the output pressure more stable and adapts to precise extrusion conditions;
3. A wide range of applicable viscosity: different sealing methods can be applied to working conditions from low viscosity to very high viscosity;
4. A variety of installation methods: to meet the individual needs of users;
5. High-precision manufacturing and excellent heat treatment: more precise and more durable;
 Technical data:
Viscosity  : 1~40000Pa•s(1~40,000,000cP)
Suction side pressure : 0~30MPa
Discharge side pressure : 0~40MPa
Differential pressure : 25MPa 
Temperature : ≤350℃
Heating : Electric heating
The installation structure of melt gear pump:
It is recommended to use a universal coupling to connect the reducer and the melt pump to eliminate the effects of thermal deformation; the melt gear pump is a positive displacement forced delivery pump, and the pump output flow can be adjusted by adjusting the pump speed. It is recommended to use frequency conversion adjustment The speed mode can
realize the nearly linear flow output of the gear pump.

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Pump size and Technical data

Model

cc/r

Inlet
pres.
MPa

Outlet
pres.
MPa

   Max. flow rate     m3/h

Temp

Low
viscosity material

Medium
viscosity material

High
viscosity material

Ultra high
viscosity
material

<50Pa.s

50~200Pa.s

200~2000Pa.s

>2000Pa.s

NED-01

1

0~30

≤40.0

0.008 

0.006 

0.004 

0.003 

≤350℃

NED-02

2

0.016

0.011 

0.008 

0.005 

NED-05

5

0.041

0.028

0.019

0.012

NED-10

10

0.081

0.054

0.038

0.024

NED-20

20

0.162

0.108

0.076

0.049

NED-32

32

0.259

0.173

0.121

0.078

NED-50

50

0.405

0.270

0.189

0.122

NED-75

75

0.527

0.365

0.243

0.162

NED-100

100

0.702

0.486

0.324

0.216

NED-160

160

1.123

0.778

0.518

0.346

NED-200

200

1.404

0.972

0.648

0.432

NED-250

250

1.620

1.080

0.675

0.473

NED-355

355

2.3

1.5

0.9

0.7

NED-500

500

3.2

2.2

1.2

0.9

NED-750

750

4.9

3.2

1.8

1.4

NED-1000

1000

5.4

3.8

2.2

1.9

NED-1200

1200

6.5

4.5

2.6

2.3

NED-1600

1600

8.6

6.0

3.5

3.0

NED-2000

2000

10.8

7.6

4.3

3.8

NED-2500

2500

10.8

8.1

4.7

4.1

NED-3150

3150

13.6

10.2

6.0

5.1

NED-4000

4000

13.0

10.8

7.6

6.5

NED-6300

6300

20.4

17.0

10.2

9.2

NED-8000

8000

21.6

17.3

13.0

11.7

Please consult with the manufacturers for the bigger or lower specification

The flow rate of the melt gear pump is related to the working speed, material viscosity, and working pressure. Please consult the manufacturer for specific selection.
The selection needs to provide parameters: 1 flow or output 2 material name 3 material viscosity 4 material corrosivity/toxicity 5 inlet and outlet pressure (pressure difference) 6 operating temperature


Product detail pictures:

Rapid Delivery for dowty double gear pump -
  NED Series Melt Gear Pump – Vowa detail pictures

Rapid Delivery for dowty double gear pump -
  NED Series Melt Gear Pump – Vowa detail pictures


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We keep on with our enterprise spirit of "Quality, Efficiency, Innovation and Integrity". We intention to create extra worth for our buyers with our prosperous resources, superior machinery, experienced workers and superb services for Rapid Delivery for dowty double gear pump - NED Series Melt Gear Pump – Vowa, The product will supply to all over the world, such as: Milan , Finland , Luxembourg , We strive for excellence, constant improvement and innovation, is committed to make us the "customer trust" and the "first choice of engineering machinery accessories brand" suppliers. Choose us, sharing a win-win situation!
  • The factory has advanced equipment, experienced staffs and good management level, so product quality had assurance, this cooperation is very relaxed and happy!
    5 Stars By Sabrina from Somalia - 2017.10.13 10:47
    The supplier abide the theory of "quality the basic, trust the first and management the advanced" so that they can ensure a reliable product quality and stable customers.
    5 Stars By Eric from Lithuania - 2018.07.27 12:26