GB2261179A - Spray bar system - Google Patents

Spray bar system Download PDF

Info

Publication number
GB2261179A
GB2261179A GB9222196A GB9222196A GB2261179A GB 2261179 A GB2261179 A GB 2261179A GB 9222196 A GB9222196 A GB 9222196A GB 9222196 A GB9222196 A GB 9222196A GB 2261179 A GB2261179 A GB 2261179A
Authority
GB
United Kingdom
Prior art keywords
outlet
fluid
under
elastomeric material
normally closed
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.)
Withdrawn
Application number
GB9222196A
Other versions
GB9222196D0 (en
Inventor
David John Osborne
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.)
H & G Process Contracting
Original Assignee
H & G Process Contracting
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 H & G Process Contracting filed Critical H & G Process Contracting
Publication of GB9222196D0 publication Critical patent/GB9222196D0/en
Publication of GB2261179A publication Critical patent/GB2261179A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/30—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
    • B05B1/32—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages in which a valve member forms part of the outlet opening
    • B05B1/323—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages in which a valve member forms part of the outlet opening the valve member being actuated by the pressure of the fluid to be sprayed

Landscapes

  • Nozzles (AREA)
  • Water Treatment By Sorption (AREA)

Abstract

A device for creating a spray of fluid made of an elastomeric material comprising an opening into which flows the fluid to be sprayed, and an outlet which, under a no-flow condition is normally closed, and which, under the pressure of the fluid as it starts to flow through the device, deforms so as to produce the outlet nozzle; the outlet being held normally closed by the mechanical strength of the elastomeric material.

Description

IMPROVED SPRAYBAR SYSTEM This invention relates to the emptying of submerged granular materials from containers by means of submerged liquid sprays directing the granular material towards outlet nozzles.
In particular it relates to the emptying of Granular Activated Carbon (GAC) from vessels or open concrete adsorbers containing the GAC.
Because of European commission directives, the concentration of eg pesticides in drinking water has to be reduced. This is being effected by adsorbing the undesirable materials onto GAC held in large adsorbers. When the GAC is fully loaded and is no longer capable of removing the undesirable materials, the GAC has to be removed from the adsorbers for regeneration in a furnace.
Removal of the GAC by totally fluidising it creates a large amount of associated polluted water "black water" which is expensive to store and treat.
As one can readily imagine, the concentration of the GAC gradually diminishes and the fluidising becomes less efficient, even though the water level is reduced as the GAC is removed.
Using this invention, the GAC is either unfluidised or only slightly fluidised and is propelled towards the outlet nozzle by the use of underwater water jets.
However, open nozzles attached to spraybars submerged in the GAC frequently become blocked.
This invention is for a system of jets and/or an individual jet nozzle made of a elastomeric material (rubber or similar). Such jets are designed to be self- sealing so that the orifice remains closed when no pressure is applied to the inside. They are used underwater to prevent particles of a submerged bed of granular material from entering the nozzle when it is not internally pressurised.
The spray pattern induced by the nozzles should ideally be a flat jet. When pressurised the orifice opens to the desired shape and cross sectional area and the propelling fluid enters the submerged bed. The jets are self-sealing and non-blocking.
In other words this invention is a device for creating a spray of fluid made of an elastomeric material comprising an opening into which flows the fluid to be sprayed, and an outlet which, under a no-flow condition is normally closed, and which, under the pressure of the fluid as it starts to flow through the device, deforms so as to produce the outlet nozzle; the outlet being held normally closed by the mechanical strength of the elastomeric material.
Preferably the passage from the inlet to the outlet, under conditions when a fluid is flowing through the device, increases in cross sectional area, from the inlet to the outlet.
Although this invention has been described in terms of the removal of GAC, this invention may also be used for the removal of eg sand from sand filters in the similar manner.

Claims (1)

  1. Claim 1 A device for creating a spray of fluid made of an elastomeric material comprising an opening into which flows the fluid to be sprayed, and an outlet which, under a no-flow condition is normally closed, and which, under the pressure of the fluid as it starts to flow through the device, deforms so as to produce the outlet nozzle; the outlet being held normally closed by the mechanical strength of the elastomeric material.
    Claim 2 A device as claimed in Claim 1 wherein the passage from the inlet to the outlet, under conditions when a fluid is flowing through the device, increases in cross sectional area, from the inlet to the outlet.
GB9222196A 1991-10-24 1992-10-22 Spray bar system Withdrawn GB2261179A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB919122632A GB9122632D0 (en) 1991-10-24 1991-10-24 Improved spraybar system

Publications (2)

Publication Number Publication Date
GB9222196D0 GB9222196D0 (en) 1992-12-02
GB2261179A true GB2261179A (en) 1993-05-12

Family

ID=10703495

Family Applications (2)

Application Number Title Priority Date Filing Date
GB919122632A Pending GB9122632D0 (en) 1991-10-24 1991-10-24 Improved spraybar system
GB9222196A Withdrawn GB2261179A (en) 1991-10-24 1992-10-22 Spray bar system

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB919122632A Pending GB9122632D0 (en) 1991-10-24 1991-10-24 Improved spraybar system

Country Status (1)

Country Link
GB (2) GB9122632D0 (en)

Also Published As

Publication number Publication date
GB9222196D0 (en) 1992-12-02
GB9122632D0 (en) 1991-12-04

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)