CA2663340A1 - Intake nozzle for a pump - Google Patents
Intake nozzle for a pump Download PDFInfo
- Publication number
- CA2663340A1 CA2663340A1 CA 2663340 CA2663340A CA2663340A1 CA 2663340 A1 CA2663340 A1 CA 2663340A1 CA 2663340 CA2663340 CA 2663340 CA 2663340 A CA2663340 A CA 2663340A CA 2663340 A1 CA2663340 A1 CA 2663340A1
- Authority
- CA
- Canada
- Prior art keywords
- mouth
- nozzle
- intake
- annular gap
- flat surface
- 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.)
- Granted
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
- F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
- F04D29/708—Suction grids; Strainers; Dust separation; Cleaning specially for liquid pumps
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Jet Pumps And Other Pumps (AREA)
Abstract
An intake nozzle for the inlet pipe of a pump has a vertical duct with a downwardly facing mouth and a surrounding disk shaped intake portion with a bottom surface which faces a flat surface such as a floor or tank bottom to take liquid from the floor down to a shallow depth. The bottom surface is shaped with a flat outer part and an upwardly and inwardly curved inner part converging to the mouth.
The surface is shaped and spaced from the flat surface with annular areas defined therebetween so that the liquid enters the peripheral edge slowly and accelerates up to an inner edge of the flat portion and then remains at constant velocity from the inner edge of the flat portion through the mouth and the pipe to the intake of the pump.
The surface is shaped and spaced from the flat surface with annular areas defined therebetween so that the liquid enters the peripheral edge slowly and accelerates up to an inner edge of the flat portion and then remains at constant velocity from the inner edge of the flat portion through the mouth and the pipe to the intake of the pump.
Claims (8)
1. An intake nozzle for a pump comprising:
a cylindrical duct portion defining a circular bottom mouth surrounding a central upstanding axis of the duct portion with the bottom mouth arranged to face downwardly toward an upwardly facing flat surface from which liquid is to be drawn into the mouth;
the duct portion being arranged for connection to an inlet pipe of the pump so that the pump draws liquid from the nozzle into the pump for discharge;
a plate member surrounding the bottom mouth and defining a downwardly facing nozzle surface for facing the flat surface, so that the liquid is drawn between the flat surface and the downwardly facing nozzle surface before entering the bottom mouth;
a plurality of spacer members extending downwardly from the nozzle surface for spacing the nozzle surface from the flat surface;
the nozzle surface being shaped and spaced from the flat surface so as to define an annular gap surrounding the bottom mouth which defines with the flat surface an annular area at the annular gap which is substantially equal to the circular area of the bottom mouth;
the nozzle surface being shaped between the annular gap and the mouth so as to define an inwardly and upwardly extending curved surface portion which is shaped such that an annular area between the surface portion and the flat surface at any circle surrounding the central axis of the bottom mouth is substantially equal to the circular area of the bottom mouth;
the plate member extending outwardly from the annular gap to an outer peripheral edge of the nozzle surface so as to define a peripheral intake mouth between the flat surface and the outer edge of the downwardly facing nozzle surface through which the liquid is drawn to pass under the nozzle surface to the bottom mouth;
the nozzle surface being shaped such that, as it extends outwardly from the annular gap to the peripheral mouth, the annular area at any circle surrounding the central axis between the nozzle surface and the flat surface increases with the radius.
a cylindrical duct portion defining a circular bottom mouth surrounding a central upstanding axis of the duct portion with the bottom mouth arranged to face downwardly toward an upwardly facing flat surface from which liquid is to be drawn into the mouth;
the duct portion being arranged for connection to an inlet pipe of the pump so that the pump draws liquid from the nozzle into the pump for discharge;
a plate member surrounding the bottom mouth and defining a downwardly facing nozzle surface for facing the flat surface, so that the liquid is drawn between the flat surface and the downwardly facing nozzle surface before entering the bottom mouth;
a plurality of spacer members extending downwardly from the nozzle surface for spacing the nozzle surface from the flat surface;
the nozzle surface being shaped and spaced from the flat surface so as to define an annular gap surrounding the bottom mouth which defines with the flat surface an annular area at the annular gap which is substantially equal to the circular area of the bottom mouth;
the nozzle surface being shaped between the annular gap and the mouth so as to define an inwardly and upwardly extending curved surface portion which is shaped such that an annular area between the surface portion and the flat surface at any circle surrounding the central axis of the bottom mouth is substantially equal to the circular area of the bottom mouth;
the plate member extending outwardly from the annular gap to an outer peripheral edge of the nozzle surface so as to define a peripheral intake mouth between the flat surface and the outer edge of the downwardly facing nozzle surface through which the liquid is drawn to pass under the nozzle surface to the bottom mouth;
the nozzle surface being shaped such that, as it extends outwardly from the annular gap to the peripheral mouth, the annular area at any circle surrounding the central axis between the nozzle surface and the flat surface increases with the radius.
2. The intake nozzle according to Claim 1 wherein the nozzle surface is flat between the annular gap and the peripheral mouth.
3. The intake nozzle according to Claim 1 or 2 wherein the outer peripheral edge is located at a diameter which is at least double the diameter at the annular gap.
4. The intake nozzle according to any one of Claims 1 to 3 wherein the annular gap is located at a diameter which is at least double the diameter of the bottom mouth.
5. The intake nozzle according to any one of Claims 1 to 4 wherein the plate member is circular at the peripheral edge.
6. The intake nozzle according to any one of Claims 1 to 5 wherein the duct is vertical and defines an upper open mouth, for connection to the intake pipe of the pump, which is spaced above the plate member.
7. The intake nozzle according to any one of Claims 1 to 6 wherein the spacer members extend from the nozzle surface at positions spaced outwardly of the annular gap.
8. The intake nozzle according to any one of Claims 1 to 7 wherein the spacer members are arranged so as to avoid reducing the annular area at a circle intersecting the spacer member to an area less than the circular area of the bottom mouth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2663340 CA2663340C (en) | 2009-04-07 | 2009-04-07 | Intake nozzle for a pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2663340 CA2663340C (en) | 2009-04-07 | 2009-04-07 | Intake nozzle for a pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2663340A1 true CA2663340A1 (en) | 2010-10-07 |
| CA2663340C CA2663340C (en) | 2012-09-25 |
Family
ID=42933044
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2663340 Expired - Fee Related CA2663340C (en) | 2009-04-07 | 2009-04-07 | Intake nozzle for a pump |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2663340C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3266958A1 (en) * | 2016-07-06 | 2018-01-10 | Alfred Kantor | Gutter for cleaning building facades |
-
2009
- 2009-04-07 CA CA 2663340 patent/CA2663340C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3266958A1 (en) * | 2016-07-06 | 2018-01-10 | Alfred Kantor | Gutter for cleaning building facades |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2663340C (en) | 2012-09-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20140408 |