FI118692B - Method and apparatus for surface cleaning - Google Patents

Description

118692

METHOD AND EQUIPMENT FOR CLEANING SURFACES

The invention relates to a method and apparatus for cleaning a movable surface, in particular a tissue structure, such as a wire, wherein a washing fluid conduit is provided in the vicinity of the surface to be cleaned, a spray nozzle is applied to the surface to be cleaned, and a pressure is applied to said surface. one or more air-spraying nozzles.

10

A purification method similar to the one described above is known in Finland. Application Publication 9S2525, in which the surface to be cleaned is sprayed with a washing liquid from a nozzle, which is spaced at a distance by means of walls to form a chamber space in which spills and dirt fly off the surface. This chamber also blows air from the surface of the chamber 15 near the surface to be cleaned, and the suction effect created in the chamber space further aims to remove liquid splashes, dirt and air blown into the chamber space.

The solution described above is suitable for cleaning the visible surface. In other words, only the surface on the side of the washer is cleaned, e.g. from a moving web or a moving cylinder. The scrubbing method is not intended to penetrate into the material to be cleaned, such as the wire cloth used by the paper industry, but is essentially ': *': the sprayed wash liquid bounces off the surface and cleans the surface due to the impact of droplets. All spills should be collected from the same side of the surface, * ·: · * 25 and cleaned. The washing method may cause the fabric wire to be cleaned and stuck with some of the dirt on the • • • * * ··· / nail.

The method according to the invention is intended in particular to improve the cleaning of the fabric screen, whereby also the inner parts of the wire are to be removed. The process of the invention is characterized by the fact that air is blown in an annular manner directly from the nozzles positioned around the surface of the washer fluid nozzle • '·' * to prevent the spray liquid from flowing out of the annular space and air jets. enhancing the passage of the washing liquid and splashes in said annular space through the tissue-structured surface.

• · 2 118692

The device according to the invention is characterized in that the air nozzles are arranged annularly around the washer fluid nozzle and directed directly towards the surface with the purpose of preventing the spray liquid sprays from flying out of the annular space formed by the air jets and by the air jets.

An advantage of the method according to the invention is that the fabricable surface to be cleaned, such as a wire, is cleaned not only on the surface but also on the inside of the structure, since a powerful and controlled jet of washing liquid is intended to achieve high wire permeability. Dirt and fluids that have passed through the wire are easily collected in a trough underneath the wire, where they fall due to gravity and blowing. The chamber known in the prior art does not have to be formed by walls but is easily created by air jets. In the solution, the centrifugal force does not affect the wire at the washing event and thus will not impede the passage of liquid through the wire.

In the following, the invention will be explained in more detail with reference to the accompanying drawing, in which Figure 1 is a side elevational view of the washing machine.

Figure 2 shows a side view of a washing machine in connection with a wire.

20

Fig. 1 shows a surface cleaning device, such as a papermaking machine wire 1, showing a nozzle head comprising a washing fluid jet nozzle 9 leading to a fluid conduit 4 and an air blown nozzle 8 which is annular. The spray jet 10 thus becomes a protective curtain • around the jets 11 ····. Compressed air is introduced through the connection part 7 into the ring chamber • · · 25 6 where it is discharged. The fluid piping 4 has a nozzle body 3 surrounded by compressed air • · '··; sleeve 5 included in the distribution system 5. The washer fluid is passed at a pressure of about 50-300 bar • · · * ::: from nozzle 9 per wire to be cleaned 1. When the jet is sharp due to a nozzle diameter of 0.1 - • · • · "* 0.3 mm, becomes permeable and at least part of it is capable of directly passing through the woven fabric.

• M

* (· ·. (30 transports them to a tray 2 underneath wire 1).

However, part of the jet of liquid meets the wire so that the liquid spills backwards and sideways.

• '· *': '* As a result, the washer includes an annular air curtain formed by a • ·: .v nozzle 10. Said ring shower 10 prevents splashes from escaping from the chamber formed by the jet · 5 3 118692. On the other hand, a powerful compressed air jet 10 also presses the splashes on the wire 1 through its position. Also, those spills that flutter in the chamber for a while eventually end up under at least an air jet 10.

The washer may have one or more openings in the fluid nozzle 9 depending on the desired wash width. The pneumatic nozzle opening $ may be a continuous annular or formed by a plurality of circumferentially spaced holes. The actual cleaning of the wire 1 can be done in a strip only about a few millimeters wide. However, the air curtain 10 provided by the jets 10 prevents splashes and dirt from spreading immediately to the strip which may have already been cleaned outside the jet 10.

Fig. 2 shows a washing rail transfer rail 16 mounted transversely to the movable wire 1 on which the nozzle assembly is moved according to a particular washing program. The wash 15 fluid has a conduit 12, an air jet 13 surrounding the air jet and an air conduit 14 for the after-blow air belonging to the scrubber. The after-blow is made from the nozzle 15 and is preferably approximately as wide as the annular shape of the air curtain 10. Also, the compressed air flow of the nozzle 15 is capable of at least partially penetrating the woven fabric. Therefore, the collecting tray 2 is also on the lower side of this blow.

• · ··· To increase the cleaning capacity, the easiest way is to add nozzle units side by side in the direction of the rail: · 1: 16 so that a common collection tray 2 is sufficient for everyone.

··· • ♦ «•« • · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · • • • •

• M

• · '· 30 ··· · 1 1 • · • · • f ·

• · I

* · · · «· · · · · · ·

Claims (9)

118692 A method for cleaning a movable surface, in particular of a tissue structure, such as a wire (1), in which a washing liquid conduit (12) is provided in the vicinity of the surface to be cleaned, a nozzle (9) perpendicular to the cleaning surface a compressed air pipeline (13), (14) being guided towards said surface, wherein one or more air-jetting nozzles (8), (15) are arranged at the end of the compressed air piping, characterized in that air is blown 10 from nozzles (8) around the washer fluid nozzle (9). ) directly towards the surface (1) with the intent of preventing the spray liquid splashes from flying out of the annular space formed by the air jets (10) and by the air jets (8) (15) to efficiently pass the washing liquid and splashes in said annular space. 15 2. Förfarandeenligtpatentkrav 1, kännetecknat därav, att smutsmaterialoch ···: vätskor som har genomsläppt ytan (1) samlas med hjälp av ett samlingsträg (2). # ·· • · • · · 1 «• · • · · · · 1 · 118692 Method according to Claim 1, characterized in that dirt materials and liquids which have passed through the surface (1) are collected by means of a collecting tray (2). 3. Förfarandeenligtpatentkrav 1, kännetecknat därav, attdenröriigarengö-ringsanordningen flyttas i anseende account den rörande och rengörande ytan (1) i tvärriktning för rengöring hela yta under önskad tidperiod. 5 A method according to claim 1, characterized in that the movable cleaning device 20 is moved transversely to the movable and cleanable surface (1). direction to clean the entire surface within a desired time period. · * · »• · · e · · · · · 4. Anordning för rotöring ring av en rörlig yta, särskilt av en yta av inslagskonstruktion, liksom en vira (1), I am looking at anordning omfattar account without delay, and den darörande ytan Lettland tvättmedelrör (12), that account samband med nämnda rör anpassat munstycke (9) som sprutar tvättmeded lodrätt mot den darrenande ytan, samt et tryckluftrör (13); (14) som är Lett mot 10 nd yacht and account det anpassat eller flera luit sprutande munstycken (8), (13), k-n-netecknad därav , att luftmunstyckena (8) businessformigtanpassadekringtvättme-delmunstycket (9) och riktade dig mot ytan (1) med syftet att hindra flygandet av tvättmedel stänk ut frän ringrymmet som luftduscharaa (10) formar och det är med hjälp av luf (15) effekterad hamning av tvättmedel och i nämnda ringrymme liggande 15 stänken genom den med inslagskonstruktion gjorda ytan (1). A device for cleaning a movable surface, particularly a tissue structure, such as a wire (1), comprising a washing liquid conduit (12) in the vicinity of the surface, a nozzle (9) perpendicularly spraying said liquid to the surface to be cleaned. one or more air-spraying nozzles (8), (15) adapted to conduct said air conduits (13), (14) and, known as the air nozzles (8), ) is annularly arranged around the washer fluid nozzle (9) and · · · directed directly towards the surface (1) to prevent splashes of washer fluid from flowing out • · 30 from the annular space formed by the air jets (10) and the air jets (8); enhanced passage of the washing liquid and splashes in said annular space through the fabric-shaped surface (1). Apparatus according to claim 4, characterized in that a liquid collection tray (2) is arranged below the surface to be cleaned (1). 5. Anordning enligt patentkrav 4, känneteckna d därav, att ett samlingstrag (2), for the purpose of the patent, and (1). 6. Anordning enligt patentkrav 4, känneteckna d därav, att en transportskena (16) and anpassad för anordningen för flyttning av anordningen i anseende till ytan (1) under rengöringen. • · Device according to Claim 4, characterized in that a conveyor rail (16) is provided for moving the device with respect to the surface (1) during cleaning. Device according to Claim 4, characterized in that the air blowing nozzle is an annular opening (8) around the fluid nozzle (9). 10 Device according to Claim 4, characterized in that the air blowing nozzle (8) has separate ring-shaped nozzles around the fluid nozzle (9). Device according to Claim 4, characterized in that in the direction of travel of the surface (1) there is a separate air blowing nozzle (15) behind the washing nozzles ¢ 8), (9). 20 1. Förfarande för tugöring av en rörlig yta, särskilt av en yta av inslagskonstruktion, liksom en vira (1), i flashing förfarande et tvättmedelrör (12) å Letters without notice av den rörlig ytan, det har anpassats account samband med nämnda rör ett munstycke (9) som * sprutar tvätted med lodrätt mot den edgerande ytan, samt det har ledds mot such atertt tryckluftrör (13), (14), color det har anpassats i ändan av tryckluftröret ett eller flera luit 25 sprutandemunstycken (8), (15), kännetecknat därav, att luftbläsesringformigt • · · dig mot ytan fiin munstycken (8) som är placerade kring tvättmedelmunstycket (9) med v · ... '· syftet att flygandet av tvättmedelstänk ut frän ringrymmet som luftduschama (10) ·· • · '··· 1 hindrasoch med hjälp av luftduschama (8), (15) effekteras hamning av tvättmedel ochi these ringrymme liggande stänken genom den med inslagskonstruktion gjorda ytan. • · • • 30 ··· • · 7. Anordning enligt patentkrav 4, känneteckna d därav, att en ringöppning (8) M · * 25 kring västemunstycket (9) är som munstycket för luftbläsning. ··· • · • e ··· · «•“ I 8. Anordning enligt patentkrav 4, känneteckna d därav, att separata ρ • ringform • · ** ·· 'placerade munstycken kring vätskemunstycket (9) är som munstycke (8) för luftbläsning. • e • • e · * ... 30 9. Anordning enligt patentkrav 4, känneteckna d därav, att det finns et separat • * luftbläsningsmunctycke (15) i ytans (1) rörelseriktning efter tvättmunstyckena (8); (9) · ** · • · · m · * · • · • • • • • • • • • • •