GB1475321A - Screw pumps - Google Patents
Screw pumpsInfo
- Publication number
- GB1475321A GB1475321A GB893274A GB893274A GB1475321A GB 1475321 A GB1475321 A GB 1475321A GB 893274 A GB893274 A GB 893274A GB 893274 A GB893274 A GB 893274A GB 1475321 A GB1475321 A GB 1475321A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cylinder
- modules
- feb
- pumps
- archimedean screw
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D3/00—Axial-flow pumps
- F04D3/02—Axial-flow pumps of screw type
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
1475321 Archimedean screw pumps SIGMUND PULSOMETER PUMPS Ltd 26 Feb 1975 [27 Feb 1974] 8932/74 Heading F1C An archimedean screw pump 5, Fig. 1, is made up of stages 5' each comprising a cylinder having one or more internal helicoidal vanes 9 and built up from plastics modules 30, Fig. 3, having a first portion 31 constituting part of the cylinder wall and a second portion 32 constituting part of the vane. A third portion (45), Fig. 5 (not shown), may depend from the inner edge of the second portion, its axial length being less than the distance between adjacent vanes to form part of a helical ribbon core coaxial with the cylinder. The modules are bonded together, the lower-end modules, which engage a member 58 are squared off by sawing off triangular pieces 33 which are inserted in triangular spaces at the upper end of the cylinder, a mandrel 52 carrying arms 62 maintaining alignment during the bonding process. A second end member (66), Fig. 6, (not shown), is added to the upper end of the cylinder, a glass fibre web then being bonded to the cylinder and end members. At the upper end of the pump a rigid lip 16 or a flexible annular flange is attached which engages an arcuate lip seal to prevent substantial backflow of liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB893274A GB1475321A (en) | 1975-02-26 | 1975-02-26 | Screw pumps |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB893274A GB1475321A (en) | 1975-02-26 | 1975-02-26 | Screw pumps |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1475321A true GB1475321A (en) | 1977-06-01 |
Family
ID=9862115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB893274A Expired GB1475321A (en) | 1975-02-26 | 1975-02-26 | Screw pumps |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1475321A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2417655A1 (en) * | 1978-02-17 | 1979-09-14 | Schreiber Klaeranlagen | Screw pump assembly with spindle - has enclosing cylindrical housing with helical rib welded to spindle |
| US4245949A (en) * | 1977-11-18 | 1981-01-20 | Sigmund Pulsometer Pumps Limited | Archimedean screw pumps |
| ITFR20100019A1 (en) * | 2010-09-02 | 2012-03-03 | Paolo Caira | MODULAR SCREW WITH THREE PRINCIPLES IN PLASTIC MATERIAL FOR LIFTING FLUIDS |
-
1975
- 1975-02-26 GB GB893274A patent/GB1475321A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4245949A (en) * | 1977-11-18 | 1981-01-20 | Sigmund Pulsometer Pumps Limited | Archimedean screw pumps |
| FR2417655A1 (en) * | 1978-02-17 | 1979-09-14 | Schreiber Klaeranlagen | Screw pump assembly with spindle - has enclosing cylindrical housing with helical rib welded to spindle |
| ITFR20100019A1 (en) * | 2010-09-02 | 2012-03-03 | Paolo Caira | MODULAR SCREW WITH THREE PRINCIPLES IN PLASTIC MATERIAL FOR LIFTING FLUIDS |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |