Title:
PROGRESSING CAVITY PUMP
Document Type and Number:
WIPO Patent Application WO2002018792
Kind Code:
A3
Abstract:
A system and method for transporting high-viscosity, high-solids, dewatered materials essentially includes a progressing cavity pump system utilizing a twin-screw feeder with an extended tunnel section. The feeding of the material into an extended tunnel section of the twin screw feeder creates a positive pressure, which assists in feeding the product into the suction housing of the progressing cavity pump, and correspondingly, into the pumping elements. This increases volumetric (fill) efficiency of the progressing cavity pump, thereby allowing a smaller pump to be used. The suction housing of the progressing cavity pump includes an auger positioned therein that is directly coupled to, and preferably integral with, the progressing cavity rotor. The universal joint is moved from the position in front of the stator entrance to a point behind the auger and suction inlet opening to improve flow of material from the suction housing to the progressing cavity pump elements. The inlet conduit coupled to the transition housing is angled slightly towards the direction of flow to further improve the flow efficiency and increase the fill rate of the progressing cavity pump elements.
Inventors:
WILD ALAN G
SNYDER CHARLES L
BROWN TODD E
SLIWINSKI RICHARD A
SNYDER CHARLES L
BROWN TODD E
SLIWINSKI RICHARD A
Application Number:
PCT/US2001/041780
Publication Date:
November 07, 2002
Filing Date:
August 17, 2001
Export Citation:
Assignee:
MOYNO INC (US)
International Classes:
F04C2/107; F04C13/00; F04C14/08; F04C15/00; (IPC1-7): F04C2/107; F04C13/00
Foreign References:
| DE29502026U1 | 1995-04-27 | |||
| EP0037294A2 | 1981-10-07 | |||
| EP0925892A1 | 1999-06-30 | |||
| US2569039A | 1951-09-25 | |||
| DE4311221A1 | 1993-10-07 |
Other References:
PATENT ABSTRACTS OF JAPAN vol. 015, no. 345 (C - 0864) 3 September 1991 (1991-09-03)
PATENT ABSTRACTS OF JAPAN vol. 1999, no. 13 30 November 1999 (1999-11-30)
PATENT ABSTRACTS OF JAPAN vol. 1996, no. 03 29 March 1996 (1996-03-29)
PATENT ABSTRACTS OF JAPAN vol. 1999, no. 13 30 November 1999 (1999-11-30)
PATENT ABSTRACTS OF JAPAN vol. 1996, no. 03 29 March 1996 (1996-03-29)
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