Title:
【発明の名称】紡績ポンプ
Document Type and Number:
Japanese Patent JP2002531722
Kind Code:
A
Abstract:
The invention relates to a spin pump for conveying a liquid polymer melt. To drive the conveying means enclosed in the pump housing, a drive shaft is provided, which extends through the pump housing in a bearing bore, and which comprises an external end for connecting to a drive. To seal the outward extending drive shaft, a cooling sleeve is employed which connects in a pressure tight fashion to the pump housing. The cooling sleeve surrounds the drive shaft with a narrow gap therebetween, and the outer surface of the cooling sleeve is cooled by a coolant for increasing the viscosity of the polymer melt which enters the gap between the drive shaft and the cooling sleeve. With an increased viscosity, the melt acts to seal the gap without interfering with the rotation of the drive shaft.
Inventors:
Ulrich Helving
Egon Gartman
Thomas kramer
Jurgen Hasenburg
Egon Gartman
Thomas kramer
Jurgen Hasenburg
Application Number:
JP2000586983A
Publication Date:
September 24, 2002
Filing Date:
December 01, 1999
Export Citation:
Assignee:
Barmark Actien Gezershaft
International Classes:
F04C2/10; D01D1/06; F04B15/02; F04B53/00; F04B53/08; F04C13/00; F04C15/00; (IPC1-7): D01D1/06; F04B15/02; F04B53/00; F04B53/08; F04C2/10; F04C13/00; F04C15/00
Attorney, Agent or Firm:
Toshio Yano (4 outside)