CA2663340A1 - Intake nozzle for a pump - Google Patents

Intake nozzle for a pump Download PDF

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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
Application number
CA 2663340
Other languages
French (fr)
Other versions
CA2663340C (en
Inventor
Edward John Koch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CA 2663340 priority Critical patent/CA2663340C/en
Publication of CA2663340A1 publication Critical patent/CA2663340A1/en
Application granted granted Critical
Publication of CA2663340C publication Critical patent/CA2663340C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/70Suction grids; Strainers; Dust separation; Cleaning
    • F04D29/708Suction 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.

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.
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.
CA 2663340 2009-04-07 2009-04-07 Intake nozzle for a pump Expired - Fee Related CA2663340C (en)

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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3266958A1 (en) * 2016-07-06 2018-01-10 Alfred Kantor Gutter for cleaning building facades

Cited By (1)

* Cited by examiner, † Cited by third party
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