batte melt pump

Extrusion gear pump specifications and seals

Extrusion gear pump specifications include pump sizes, viscosity, temperature, suction pressure, differential pressure, etc. Extrusion gear pump seals can be Viscoseal (VS), Stuffing Box, and other types as required.

Extrusion gear pump

Extrusion gear pump specifications:
Extrusion gear pump Sizes:
From 22/13 (2,78 cm3/rev) up to 280/280 (12.000 cm3/rev). Intermediate sizes, with narrower gearwheels for higher differential pressure, are possible, e.g. 140/90 (690 cm3/rev)

Extrusion gear pump operating parameters:
Viscosity: Up to 40.000 Pas
Temperature: Up to 400 °C (752 °F)
Suction Pressure: Up to max. 120 bar (1.740 psig)
Differential Pressure: Up to 250 bar (3.626 psig), special models, also available for higher differential pressures
The extrusion gear pump values listed are maximum values and must not coincide under certain circumstances.

Extrusion gear pump specifications seals:
Viscoseal (VS)
The viscoseal is the standard seal for extrusion and booster pumps. This is a dynamic seal for high viscosities and suction pressures. It can be provided with heating or cooling.
The dynamic seal is suitable for high pressures and temperatures.
Its range of use is limited by the suction pressure and the viscosity of the medium being conveyed (at least 50 Pas). The viscosity can be increased by an additional cooling system if necessary.
Viscosity: 50 to 40.000 Pas
Temperature: max. 350 °C (662 °F)

Stuffing Box
The stuffing box can be used as an additional seal for the viscoseal.
The stuffing box is a simple (static) seal for gear pumps. It can be provided with buffering if so desired. The range of application is similar to that of the viscoseal. The standard material used for the packing is made of expanded pure graphite with structural textile fibers. But it goes without saying, that other materials are also available.
Viscosity (stuffing box): max. 10.000 Pas
Temperature: max. 350 °C (662 °F)


©2019 Batte Mechanical Zhengzhou Co,.Ltd. All rights reserved. sales@battemachinery.com
Batte is a professional screen changer manufacturer, supplying screen changer, especially screen changer for extrusion mould