Shanghai Vowa Equipment Technology Co. LTD    Discharge Pumps    G Series Polymer Melts Gear Pump

G Series Polymer Melts Gear Pump

 

 

G series melt gear pump is especially suitable for high temperature and high viscosity polymer melt reaction transportation requiring high output pressure, such as resin, chemical fiber and other industries. It is generally installed in the lower part of the reactor to make feed pump. This series of melt gear pumps have good self-priming performance, and can be used for conveying and pressurizing polymer materials under vacuum reaction conditions.


The main materials that can be transported by melt gear pump are as follows:
          polymer melt 
           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


Other stock solutions, solutions, glues, oligomers, prepolymers, etc. in the polymer material industry;
It can also be used to transport hot melt adhesives, asphalt, paints, adhesives, pharmaceuticals, food, grease, fuels, oils, dyes, coatings, lubricants, polyols and other materials that do not contain particulate impurities.


Technical data:
 Viscosity              130000Pa•s   1,00030,000,000cP
 Suction side pressure       vacuum-0.05-0.09MPa)~4MPa
Discharge side pressure     035MPa
  Differential pressure       25MPa  
 Temperature                 ≤350℃
 Heating                    Hot coal heating
  HT medium pressure          ≤1.6MPa


 Installation method
G series melt gear pumps are generally installed at the bottom of the reactor and are driven by a motor + reducer + universal coupling. The melt gear pump is a positive displacement forced delivery pump. The pump output flow can be adjusted by adjusting the pump speed. It is recommended Using frequency conversion speed regulation, can realize the nearly linear flow output of the gear pump.


 

Main structure of gear pump

Rotor type: helical or spur gear
Heating method: hot coal heating


Sealing structure:
■ Dynamic melt seal + packing seal
■ Mechanical seal
■ Dynamic seal with cooling melt
■ High temperature resistant packing seal


Main structural materials of melt gear pump:
Pump housing: stainless steel/alloy steel/corrosion-resistant alloy
Gear: Nitrided steel/tool steel/stainless steel + coating/corrosion resistant alloy
Bearing: tool steel/copper alloy/stainless steel + coating/corrosion resistant alloy


 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

50200

Pa.s

2002000

Pa.s

2000Pa.s

 

G-10

10

Vacuum

-0.094.0

≤35.0

0.081

0.054

0.038

0.024

≤350℃

G-20

20

0.162

0.108

0.076

0.049

G-32

32

0.259

0.173

0.121

0.078

G-50

50

0.405

0.270

0.189

0.122

G-75

75

0.527

0.365

0.243

0.162

G-100

100

0.702

0.486

0.324

0.216

G-160

160

1.123

0.778

0.518

0.346

G-200

200

1.404

0.972

0.648

0.432

G-250

250

1.620

1.080

0.675

0.473

Please consult with the manufacturers for the bigger or lower specification

The series of pump can be provided in jacket-free type, such as T-G-xxx

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.