GB2238260A - Spray heads for road surfacing vehicles - Google Patents

Spray heads for road surfacing vehicles Download PDF

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Publication number
GB2238260A
GB2238260A GB9025342A GB9025342A GB2238260A GB 2238260 A GB2238260 A GB 2238260A GB 9025342 A GB9025342 A GB 9025342A GB 9025342 A GB9025342 A GB 9025342A GB 2238260 A GB2238260 A GB 2238260A
Authority
GB
United Kingdom
Prior art keywords
liquid
nozzle
head
spray
spraying apparatus
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
GB9025342A
Other versions
GB9025342D0 (en
GB2238260B (en
Inventor
David Nicholas Kilner
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.)
Shell Internationale Research Maatschappij BV
Original Assignee
Shell Internationale Research Maatschappij BV
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 Shell Internationale Research Maatschappij BV filed Critical Shell Internationale Research Maatschappij BV
Publication of GB9025342D0 publication Critical patent/GB9025342D0/en
Publication of GB2238260A publication Critical patent/GB2238260A/en
Application granted granted Critical
Publication of GB2238260B publication Critical patent/GB2238260B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
    • E01C19/12—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for distributing granular or liquid materials
    • E01C19/16—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for distributing granular or liquid materials for applying or spreading liquid materials, e.g. bitumen slurries
    • E01C19/17—Application by spraying or throwing
    • E01C19/176—Spraying or throwing elements, e.g. nozzles; Arrangement thereof or supporting structures therefor, e.g. spray-bars
    • 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
    • B05B1/326—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 being a gate valve, a sliding valve or a cock
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/50—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter
    • B05B15/55—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter using cleaning fluids

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Coating Apparatus (AREA)

Abstract

The invention provides a spray head comprising a nozzle (1) and, in front of the nozzle, a member (3) which can be moved between first and second positions at which it respectively allows and prevents passage of liquid from the nozzle out of the head, and in which the head includes an outlet (7) for liquid diverted by the member in the second position; spraying apparatus incorporating a plurality of such spray heads, and road surfacing vehicles including such spray apparatus.

Description

Spray Heads for Road Surfacing Vehicles This invention relates to spray heads, and in particular to spray heads for use in applicators (spraying apparatus) carried by road-surfacing vehicles.
Certain road surfacings are bonded by the use of epoxy resins e.g. two-component bitumen-extended epoxy resin systems. Such systems are applied by spraying, through a conventional spray head. After use, the spray nozzles must be washed using a suitable organic solvent. Such solvents have usually been allowed to go to waste, or have been collected in a tray placed beneath the nozzles. The tray contents have then been disposed of batchwise, generally without any control over the means of disposal. In neither case is the solvent likely to be satisfactorily treated.
In summary, known wash systems are environmentally unsatisfactory. It has now been appreciated that a satisfactory alternative can be provided.
According to the present invention therefore there is provided a novel spray head, especially for use in a road-surfacing vehicle including spraying apparatus, which spray head comprises a nozzle and, in front of the nozzle, a member which can be moved between first and second positions at which it respectively allows and prevents passage of liquid from the nozzle out of the head, and in which the head includes an outlet for liquid diverted by the member in the second position. Washing of the nozzles can thus be controlled according to the position of the member, and spent wash liquid from what will usually be a plurality of nozzles in any one apparatus, can be discharged to a single holding tank, for controlled treatment and discharge, thereby minimising operator and environmental exposure to wash liquids.
Preferably spraying apparatus comprises a plurality of spray heads of the invention, and is provided with a common slidably movable member which in the first position provides a corresponding plurality of apertures to allow passage of liquid from each nozzle out of its respective head. The spraying apparatus preferably additionally comprises a supply of a liquid to be sprayed and means for delivering that liquid when the member is in the first position; a supply of wash liquid and means for delivering that liquid when the member is in the second position; and a holding tank connected to each outlet, for receiving used wash liquid.
The invention will now be described by way of example only with reference to the accompanying drawings, in which: Figure 1 is a schematic partially sectional view of spraying apparatus including spray heads embodying the present invention; and Figure 2 is a section (not to scale) along the line A-A in Figure 1.
Fig. 1 shows spraying apparatus comprising four identical spray heads (only one of these is indicated by reference numerals). Each spray head comprises a nozzle at 1 supplied by a pipe 2. Beneath the nozzle 1, a member 3 can be slideably moved (by means not shown, e.g. hydraulic means) between the position shown and the position in which an aperture 4 in the slideable member is immediately beneath the nozzle 1.
The head is constructed in two parts, the supply pipe 2 being mounted in a block 5 which is detachable from a block 6 in which an outlet pipe 7 and an 0-ring 8 are mounted.
In the arrangement shown in Fig. 1, a wash liquid from a supply (not shown) is passed through the pipe 2 and thus through the outlet pipe 7 to a holding tank (not shown). The slideable member 3 provides an essentially closed space, around the nozzle 1, and therefore ensures good contact of the wash liquid with the nozzle.
For the purpose of spraying, the slideable member 3 is moved to a position in which the aperture 4 is beneath the nozzle 1, such that liquid to be sprayed, e.g. an epoxy resin composition, passes from a supply (not shown) out of the head, past the spray curtain 9.
The "open" position of the slideable member 3 is shown in Fig. 2 which, in addition to various components shown in Fig. 1, shows also means comprising a member 10 whereby the blocks 5 and 6 are held together, until released by means (not shown) using a lever 11.
A spray head of the type illustrated in the accompanying drawings may form part of the spraying apparatus additionally comprising a supply of a liquid to be sprayed and means for the delivering that liquid when the member is in the "open" position; a supply of a wash liquid and means for delivering that liquid when the member is in the "closed" position; and a holding tank for spent wash liquid. Such apparatus is particularly suitable for use in road-surfacing vehicles which can be simply modified to include a suitable holding tank.

Claims (6)

1. A spray head comprising a nozzle and, in front of the nozzle, a member which can be moved between first and second positions at which it respectively allows and prevents passage of liquid from the nozzle out of the head, and in which the head includes an outlet for liquid diverted by the member in the second position.
2. A spray head according to claim 1, in which the member is slideably movable.
3. A spray head according to claim 1, substantially as herein described with reference to the accompanying drawings.
4. Spraying apparatus comprising a plurality of spray heads according to claim 1, in which there is a common slideably moveable member which in the first position provides a corresponding plurality of apertures to allow passage of liquid from each nozzle out of its respective head.
5. Spraying apparatus according to claim 4, additionally comprising a supply of a liquid to be sprayed and means for delivering that liquid when the member is in the first position; a supply of a wash liquid and means for delivering that liquid when the member is in the second position; and a holding tank for the used wash liquid.
6. A road-surfacing vehicle including spraying apparatus according to claim 5.
GB9025342A 1989-11-23 1990-11-21 Spray heads for road surfacing vehicles Expired - Fee Related GB2238260B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB898926472A GB8926472D0 (en) 1989-11-23 1989-11-23 Spray system

Publications (3)

Publication Number Publication Date
GB9025342D0 GB9025342D0 (en) 1991-01-02
GB2238260A true GB2238260A (en) 1991-05-29
GB2238260B GB2238260B (en) 1993-07-21

Family

ID=10666770

Family Applications (2)

Application Number Title Priority Date Filing Date
GB898926472A Pending GB8926472D0 (en) 1989-11-23 1989-11-23 Spray system
GB9025342A Expired - Fee Related GB2238260B (en) 1989-11-23 1990-11-21 Spray heads for road surfacing vehicles

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB898926472A Pending GB8926472D0 (en) 1989-11-23 1989-11-23 Spray system

Country Status (1)

Country Link
GB (2) GB8926472D0 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB339354A (en) * 1929-09-07 1930-12-08 Bertram Horne Improvements in and connected with apparatus for spraying liquid material
GB811377A (en) * 1956-07-12 1959-04-02 Smith F & Co Whitworth Ltd Improvements in spray units for washing machines
EP0063752A2 (en) * 1981-04-16 1982-11-03 Binks Manufacturing Company Flushable manifold for diaphragm protected components
EP0114137A1 (en) * 1983-01-14 1984-07-25 Nodet-Gougis Spraying apparatus, in particular for agricultural vehicles

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB339354A (en) * 1929-09-07 1930-12-08 Bertram Horne Improvements in and connected with apparatus for spraying liquid material
GB811377A (en) * 1956-07-12 1959-04-02 Smith F & Co Whitworth Ltd Improvements in spray units for washing machines
EP0063752A2 (en) * 1981-04-16 1982-11-03 Binks Manufacturing Company Flushable manifold for diaphragm protected components
EP0114137A1 (en) * 1983-01-14 1984-07-25 Nodet-Gougis Spraying apparatus, in particular for agricultural vehicles

Also Published As

Publication number Publication date
GB8926472D0 (en) 1990-01-10
GB9025342D0 (en) 1991-01-02
GB2238260B (en) 1993-07-21

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20031121