GB840671A - Improvements relating to centrifugal pumps - Google Patents
Improvements relating to centrifugal pumpsInfo
- Publication number
- GB840671A GB840671A GB9799/57A GB979957A GB840671A GB 840671 A GB840671 A GB 840671A GB 9799/57 A GB9799/57 A GB 9799/57A GB 979957 A GB979957 A GB 979957A GB 840671 A GB840671 A GB 840671A
- Authority
- GB
- United Kingdom
- Prior art keywords
- shaft
- passage
- abrasive
- sump
- sleeve
- 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
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
- F04D29/4286—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps inside lining, e.g. rubber
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/0077—Safety measures
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/10—Shaft sealings
- F04D29/106—Shaft sealings especially adapted for liquid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D7/00—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts
- F04D7/02—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type
- F04D7/04—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being viscous or non-homogenous
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2260/00—Function
- F05D2260/60—Fluid transfer
- F05D2260/602—Drainage
- F05D2260/6022—Drainage of leakage having past a seal
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
840,671. Centrifugal pumps. ASHWORTH, N. I. Nov. 14, 1957 [March 26, 1957], No. 9799/57. Class 110 (1). In a centrifugal pump of the kind in which the shaft is vertical and enters the top of the pump casing through a sealing-passage which.permits fluid from the pump casing to escape to discharge between the shaft and the wall of the sealing passage and seal the sealing passage against intake of air and so that the mixture of liquid and abrasive being pumped does not reach a shaft bearing, means are provided for ejecting the mixture from the upper end of the sealing- passage by means of a member rotating with the impeller shaft and creating a stirring or centrifugal action, or both. The centrifugal pump shown draws in a mixture of abrasive and water from a sump 13 through a conduit 14. The driving-shaft is not provided with a packing gland, and liquid passing up the annular space between the shaft and a sleeve 8 and then down between the sleeve 8 and an annular hood 11 carried by the shaft is returned to the sump by way of a passage 12. Liquid is contained in the passage 12 up to the sump liquid level A, thereby preventing air from entering the pump by way of the annular space between the shaft and the sleeve 8. The boss 17 of the impeller passes freely through an opening in the pump casing, the clearance space around the boss communicating only with the space between the shaft and the sleeve 8. Since there is no packing gland or bearing to hold abrasive against the shaft, the shaft is not subjected to a grinding action. The pump casing and impeller may be provided with abrasive-resistant linings. According to the Provisional Specification, the shaft is provided with a thrower disc having a depending flange, to deflect escaping abrasive mixture back to the sump.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9799/57A GB840671A (en) | 1957-03-26 | 1957-03-26 | Improvements relating to centrifugal pumps |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9799/57A GB840671A (en) | 1957-03-26 | 1957-03-26 | Improvements relating to centrifugal pumps |
Publications (1)
Publication Number | Publication Date |
---|---|
GB840671A true GB840671A (en) | 1960-07-06 |
Family
ID=9879008
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB9799/57A Expired GB840671A (en) | 1957-03-26 | 1957-03-26 | Improvements relating to centrifugal pumps |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB840671A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3160106A (en) * | 1962-03-08 | 1964-12-08 | Abrasive Dev | Centrifugal pumps |
EP0867620A1 (en) * | 1997-03-24 | 1998-09-30 | Renner GmbH | Circulation pump or mixer for warm chemical solutions |
WO2004065796A1 (en) * | 2003-01-17 | 2004-08-05 | Ksb Aktiengesellschaft | Non-chokable pump |
-
1957
- 1957-03-26 GB GB9799/57A patent/GB840671A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3160106A (en) * | 1962-03-08 | 1964-12-08 | Abrasive Dev | Centrifugal pumps |
EP0867620A1 (en) * | 1997-03-24 | 1998-09-30 | Renner GmbH | Circulation pump or mixer for warm chemical solutions |
WO2004065796A1 (en) * | 2003-01-17 | 2004-08-05 | Ksb Aktiengesellschaft | Non-chokable pump |
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