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Filter proximity nozzle

a filtration system and proximity nozzle technology, applied in gravity filters, loose filtering material filters, sedimentation settling tanks, etc., can solve the problems of difficult cleaning of a filtration screen used for the filtration of water and sea water in particular, difficult to remove trapped suspended solids, and major environmental threats, so as to reduce the power requirements of filtration system 102, less frequent cleaning cycles, and the effect of reducing the power requirements

Inactive Publication Date: 2012-09-06
FILTER SAFE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0030]a deformable housing which bridges a gap between said distal side of said tube and said nozzle and which couples said nozzle to a distal side of said tube and which allows tilting motion of said nozzle relative to said tube.

Problems solved by technology

A major environmental threat currently exists by the use of ballast water.
The cleaning of a filtration screen used for the filtration of water and sea water in particular is difficult.
The lower the size of the holes in the filter (usually under 100 microns) the more difficult it is to remove the trapped suspended solids that have accumulated and imbedded on the filtration screen.
Organic matter tends to stick to the filtration screen making removal especially difficult.

Method used

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Examples

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Embodiment Construction

[0041]The present invention, in some embodiments thereof, relates to self cleaning filtration systems and, more particularly, but not exclusively, to a nozzle assembly used for cleaning a filtration screen.

[0042]An aspect of some embodiments of the invention relates to approximating a nozzle connected to a pressure sink to a filtration screen in the presence of flow from the screen and through the nozzle. In an exemplary embodiment of the invention, the nozzle is pressed against the screen with a low force. Optionally, the force is provided by a resilient element which is either sealed and / or enclosed. Optionally, the enclosure and / or element deform, rather than and / or in addition to sliding, as the nozzle moves relative to the pressure sink. Optionally, the movement is axial. Optionally or alternatively, the movement includes tipping.

[0043]In an exemplary embodiment of the invention, retraction of the nozzle, directly and / or indirectly is reduced and / or prevented by equalizing a pr...

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Abstract

A suction nozzle assembly, comprising a tube coupled to a pressure sink at a distal side thereof, a nozzle, a resilient element which couples said nozzle to a proximal side of said tube and a deformable housing which bridges a gap between said proximal side of said tube and said nozzle. Optionally, a pressure equalizer, for example, a through aperture, is formed in said nozzle.

Description

RELATED APPLICATIONS[0001]This application claims the benefit of priority of PCT Application No. PCT / IB2009 / 008061 filed 12 Nov. 2009, the benefit under 35 USC 119(e) of U.S. Provisional Patent Application No. 61 / 260,856 filed 13 Nov. 2009, and the benefit under 35 USC 119(e) of U.S. Provisional Patent Application No. 61 / 380,385 filed 7 Sep. 2010, the contents of which are incorporated herein by reference in their entirety.FIELD AND BACKGROUND OF THE INVENTION[0002]The present invention, in some embodiments thereof, relates to self cleaning filtration systems and, more particularly, but not exclusively, to a nozzle assembly used for cleaning a filtration screen.[0003]Over 80% of global trade volume is still transported by ship. Ballast water is required to compensate when there is an absence of cargo. A major environmental threat currently exists by the use of ballast water. Indigenous microorganisms, sediment, plants and animal life are drawn into the ballast water, shipped to anot...

Claims

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Application Information

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IPC IPC(8): B01D35/22A47L9/02B08B3/02
CPCB08B5/04B01D29/682B01D29/688B01D2201/082
Inventor DAGAN, ETAI
Owner FILTER SAFE