EP0037294B1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Single screw pump installation for the transport of pasty products possessing a high viscosity
Assignee: Societe Generale de Mecanique et de Metallurgie
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Filing: 1981-02-26
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Granted: 1983-07-27
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Expires: 2001-02-26
Abstract
No abstract record available.
Inventors
- 👤 Edmond Chanton
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 22:26
CPC Classifications
F; F04; F04C; F04C2/00; F04C2/08; F04C2/10; F04C2/107; F04C2/1071; F04C2/1073; F04C11/00; F04C13/00; F04C13/001; F04C13/002
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
187 words
An installation for transporting pasty products having a high viscosity comprising: - a filling hopper (6) for receiving the product to be transported, - An Archimedes screw (3) extending at the base of the hopper; - a Moineau pump (1) for shifting the product to be transported, which product is forced to the intake of the pump by the Archimedes screw, the Archimedes screw (3) and the rotor (2) of the pump being approximately coaxial and being rotatively coupled to one another, - and drive means for rotatably driving the Archimedes screw (3) and the rotor (2) of the pump (1), characterized in that it comprises, on the one hand, a second Archimedes screw (7) having a winding pitch the reverse of that of the first above-mentioned Archimedes screw, this second Archimedes screw (7) being disposed at the base of the filling hopper (6) and extending approximately parallel to the first Archimedes screw (3), substantially in the same base plane as this latter and, on the other hand, drive means for causing the second Archimedes screw (7) to rotate in the opposite direction to the first one.
Claim 2
Dependent Claim
187 words
An installation for transporting pasty products having a high viscosity comprising: - a filling hopper (6) for receiving the product to be transported, - An Archimedes screw (3) extending at the base of the hopper; - a Moineau pump (1) for shifting the product to be transported, which product is forced to the intake of the pump by the Archimedes screw, the Archimedes screw (3) and the rotor (2) of the pump being approximately coaxial and being rotatively coupled to one another, - and drive means for rotatably driving the Archimedes screw (3) and the rotor (2) of the pump (1), characterized in that it comprises, on the one hand, a second Archimedes screw (7) having a winding pitch the reverse of that of the first above-mentioned Archimedes screw, this second Archimedes screw (7) being disposed at the base of the filling hopper (6) and extending approximately parallel to the first Archimedes screw (3), substantially in the same base plane as this latter and, on the other hand, drive means for causing the second Archimedes screw (7) to rotate in the opposite direction to the first one.
Claim 3
Dependent Claim
44 words
The installation as claimed in claim 1, characterized in that the second Archimedes screw (3) rotates in synchronism with the first one and in that the drive means (8, 9) comprise a non-slip coupling, in particular a gear train, inserted between the two screws.
Claim 4
Dependent Claim
21 words
The installation as claimed in claim 1 or 2, characterized in that the second Archimedes screw (7) has a fixed axis.
Claim 5
Dependent Claim
36 words
The installation as claimed in claim 1 or 2, characterized in that a second Moineau pump (13) is provided whose rotor (14) is approximately coaxial to the second Archimedes screw (7) and coupled in rotation therewith.
Claim 6
Dependent Claim
54 words
The installation as claimed in any one of claims 1 to 4, characterized in that universal couplings (11, 15) or similar are provided at both ends of the Archimedes screw(s), for coupling to the rotor of the corresponding pump, at one end, and for coupling to a corresponding drive shaft, at the other end.
Claim 7
Dependent Claim
28 words
The installation as claimed in any one of claims 1 to 5, characterized in that the two Archimedes screws have the same diameter and the same helical pitch.
Claim 8
Dependent Claim
35 words
The installation as claimed in claim 6, characterized in that the two Archimedes screws are axially offset with respect to each other and in that the distance separating their axes is less than their diameter.
Claim 9
Dependent Claim
63 words
The installation as claimed in any one of claims 1 to 7, characterized in that the end parts of the Archimedes screws which are adjacent the Moineau pump are surrounded by a common casing (19) which takes on substantially the shape of the outer contour of the two Archimedes screws, said casing having an axial length at least equal to one helical pitch.
References Cited (Backward Citations)
No citation records indexed.
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