DK170523B1 - Compressed air blower - Google Patents

Compressed air blower Download PDF

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Publication number
DK170523B1
DK170523B1 DK68791A DK68791A DK170523B1 DK 170523 B1 DK170523 B1 DK 170523B1 DK 68791 A DK68791 A DK 68791A DK 68791 A DK68791 A DK 68791A DK 170523 B1 DK170523 B1 DK 170523B1
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DK
Denmark
Prior art keywords
valve
air
gun
water
seat
Prior art date
Application number
DK68791A
Other languages
Danish (da)
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DK68791A (en
DK68791D0 (en
Inventor
Ejnar Pedersen
Original Assignee
Skannerup Mona
Skannerup Kristian
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 Skannerup Mona, Skannerup Kristian filed Critical Skannerup Mona
Publication of DK68791D0 publication Critical patent/DK68791D0/en
Priority to DK68791A priority Critical patent/DK170523B1/en
Priority to AU16566/92A priority patent/AU655974B2/en
Priority to PCT/DK1992/000122 priority patent/WO1992018260A1/en
Priority to RU93057725A priority patent/RU2107558C1/en
Priority to EP92909449A priority patent/EP0580711B1/en
Priority to JP50846792A priority patent/JP2638302B2/en
Priority to DE69206140T priority patent/DE69206140T2/en
Priority to BR9205897A priority patent/BR9205897A/en
Priority to ES92909449T priority patent/ES2081107T3/en
Priority to CA002108543A priority patent/CA2108543C/en
Priority to HU9302926A priority patent/HU217286B/en
Publication of DK68791A publication Critical patent/DK68791A/en
Application granted granted Critical
Publication of DK170523B1 publication Critical patent/DK170523B1/en

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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
    • B05B1/02—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape
    • B05B1/08—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape of pulsating nature, e.g. delivering liquid in successive separate quantities ; Fluidic oscillators
    • B05B1/083—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape of pulsating nature, e.g. delivering liquid in successive separate quantities ; Fluidic oscillators the pulsating mechanism comprising movable parts
    • 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
    • B05B1/005—Nozzles or other outlets specially adapted for discharging one or more gases
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B5/00—Cleaning by methods involving the use of air flow or gas flow
    • B08B5/02—Cleaning by the force of jets, e.g. blowing-out cavities

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  • Nozzles (AREA)
  • Cleaning In General (AREA)
  • Valve Device For Special Equipments (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)

Description

, DK 170523 B1, DK 170523 B1

Opfindelsen angår en blæsepistol til trykluft, og nærmere bestemt af den i indledningen til krav 1 angivne art.The invention relates to a compressed air blower gun, and more particularly to the kind specified in the preamble of claim 1.

5 Anvendelse af trykluft til afrensnings- og rengøringsformål er en velkendt og meget udbredt teknik. Til frembringelse af en koncentreret og kontrollerbar luftstråle benyttes sædvanligvis et pistollignende redskab, som er forsynet med en aflang luftdyse og en indbygget afspærringsventil. Afspærringsventilen betjenes manuelt via en pal eller en lignende "aftrækkermekanisme" placeret i forbindelse med blæsepistolens håndgreb.5 The use of compressed air for cleaning and cleaning purposes is a well known and widely used technique. In order to produce a concentrated and controllable air jet, a gun-like tool is usually provided, which is provided with an elongated air nozzle and a built-in shut-off valve. The shut-off valve is operated manually via a pawl or similar "trigger mechanism" located in connection with the blowgun grip.

10 Når aftrækkermekanismen aktiveres ledes en koncentreret luftstråle ud gennem dysen, og ved at rette denne luftstråle mod den genstand, som skal afrenses, er det muligt at løsne og bortblæse snavs og urenheder, såsom støv, jord, olieholdige belægninger etc.10 When the trigger mechanism is activated, a concentrated jet of air is discharged through the nozzle, and by directing this jet of air to the object to be cleaned, it is possible to loosen and blow away dirt and impurities such as dust, soil, oily coatings etc.

Luftstrålens evne til at løsne fastgroet snavs og fastsiddende belægninger afhænger af det dynamiske tryk i strålen, dvs primært strålehastigheden. Jo større hastighed jo bedre renseeffekt.The ability of the air jet to loosen solid fouled dirt and stuck coatings depends on the dynamic pressure of the jet, ie primarily the jet speed. The greater the speed, the better the cleaning effect.

1515

Strålehastigheden er imidlertid begrænset af det lufttryk, der er til rådighed, sædvanligvis 6 bar, hvorfor en forøgelse af renseeffekten kun kan opnås ved at øge luftflowet. Specielt til afrensning af fastsiddende, tykke belægninger vil luftforbruget let kunne blive forholdsmæssigt stort og rensemetoden derfor uøkonomisk.However, the jet velocity is limited by the available air pressure, usually 6 bar, so that an increase in the cleaning effect can only be achieved by increasing the air flow. Especially for cleaning of stuck, thick coatings, air consumption can easily become relatively large and the cleaning method is therefore uneconomical.

2020

Til grund for den foreliggende opfindelse ligger den opgave, at forbedre blæsepistolens løsnende og rensende virkning overfor især fastsiddende urenheder, og samtidig opnå en besparelse i trykluftforbrug. Dette opnås ifølge opfindelsen ved at indrette blæsepistolen om angivet i den kendetegnende del af krav 1.The object of the present invention lies in the task of improving the detachable and purifying effect of the blow gun against especially stuck impurities, while at the same time achieving a reduction in compressed air consumption. This is achieved according to the invention by arranging the blow gun as set forth in the characterizing part of claim 1.

2525

Den oscillerende afspærringsventil i blæsepistolen bevirker, at trykluften, i stedet for at udstrømme som en kontinuert luftstråle gennem dysen, nu opdeles i en række korte trykstød, nærmere bestemt som en pulserende luftstøm med periodisk gentagne trykudladninger. Disse periodiske trykudladninger, eksempelvis med en frekvens på 10 - 20 Hz, indebærer en 30 tidsmæssig koncentrering af trykenergien i luften, således at spidsværdien af luftens dynamiske tryk indenfor den enkelte udladning øges sammenlignet med det dynamiske tryk man ville opnå, såfremt samme luftmængde udlcdtcs kontinuert gennem dysen. Det dynamiske tryk i luftstrålen er - som allerede anført - afgørende for luftens evne til at løsne fastsiddende urenheder og belægninger.The oscillating shut-off valve in the blow gun causes the compressed air, instead of flowing out as a continuous jet of air through the nozzle, to now be divided into a series of short pressures, more specifically as a pulsating air flow with periodically repeated pressure discharges. These periodic pressure discharges, for example at a frequency of 10 - 20 Hz, involve a temporal concentration of the pressure energy in the air, so that the peak value of the dynamic pressure of the air within the individual discharge is increased compared to the dynamic pressure one would achieve if the same airflow is continuously discharged. through the nozzle. The dynamic pressure of the air jet is - as already stated - crucial for the air's ability to loosen stuck impurities and coatings.

3535

Den pulserende luftstråle har, foruden det større dynamiske tryk under trykudladningerne, også den overraskende effekt nærmest at sætte urenhederne i "vibrerende" bevægelse under virkning af luftpulsationeme. For visse typer urenheder og belægninger har det i praksis vist sig, at denne effekt i høj grad medvirker til at øge blæsepistolens rensende evne, idet "vibrationerne" medvirker 40 til at løsne materialerne, således at afrensningen foregår hurtigere, mere tilbundsgående og med mindre forbrug af trykluft. Blæsepistolen ifølge opfindelsen antages derfor i en vis udstrækning at kunne erstatte traditionel højtryksrensning (vandbaseret strålerensning) med de fordele dette indebærer både i økonomisk og miljømæssig henseende.The pulsating air jet, in addition to the greater dynamic pressure during the pressure discharges, also has the surprising effect of almost putting the impurities in "vibrating" motion under the action of the air pulsations. For certain types of impurities and coatings, it has been found in practice that this effect greatly increases the cleaning ability of the blow gun, with the "vibrations" helping to loosen the materials so that the cleaning takes place faster, more in-depth and with less consumption. of compressed air. The blow gun according to the invention is therefore believed to be able to replace traditional high-pressure cleaning (water-based jet cleaning) to a certain extent with the advantages this entails in both economic and environmental terms.

45 En foretrukken udførelsesform for blæsepistolen ifølge opfindelsen er angivet i krav 2.A preferred embodiment of the blow gun according to the invention is given in claim 2.

Virkemåden for den oscillerende afspærringsventil er følgende: I normal udgangsposition holdes ventillegemet i spærrende/tætnende anlæg mod ventilsædet af fjederen. Når der åbnes for trykluften (ved påvirkning af pistolens udløsermekanisme) øges trykket på den ene side af 2 DK 170523 B1 stemplet. Trykket bevirker, at fjederkraften overvindes og at ventilen åbnes, hvorved trykluften momentant udlades og trykket falder. Ventilen lukker nu til igen og processen starter på ny.The operation of the oscillating shut-off valve is as follows: In normal starting position, the valve body is held in locking / sealing system against the valve seat by the spring. When the compressed air is opened (by the actuation of the gun release mechanism) the pressure on one side of the 2 DK 170523 B1 piston increases. The pressure causes the spring force to be overcome and the valve opened, whereby the compressed air is momentarily discharged and the pressure drops. The valve now closes again and the process starts again.

Oscillationen fortsætter så længe der ledes trykluft frem til ventilen, dvs så længe udløsermekanismen er aktiveret. Ventilen medfører altså, ved egen kraft og under virkning af 5 trykluftens statiske og dynamiske tryk, at der skiftevis åbnes og lukkes for luftgennemgangen i blæsepistolen. *'The oscillation continues as long as compressed air is fed to the valve, ie as long as the trigger mechanism is activated. The valve thus, by its own power and under the effect of the static and dynamic pressure of the compressed air, causes the air passage in the blow gun to be alternately opened and closed. * '

Den oscillerende virkning af ventillegemet forudsætter en passende afstemthed mellem ventildimension, ventillegemets masse (= den bevægede masse) og fjederkarakteristikken.The oscillating effect of the valve body requires an appropriate balance between the valve dimension, the mass of the valve body (= the mass moved) and the spring characteristic.

10 Endvidere er det væsentligt, at ventillegemet kan bevæges let, dvs med lav friktion. Frekvensen afhænger af disse faktorer samt af trykluftens tryk.Furthermore, it is essential that the valve body can be moved easily, ie with low friction. The frequency depends on these factors as well as the pressure of the compressed air.

Stempeltætningen kan ifølge opfindelsen med fordel udformes som angivet i krav 3 og 4.The piston seal according to the invention can advantageously be designed as claimed in claims 3 and 4.

Tætningen tilgodeser i denne form kravet om lav friktion og letgående ventilbevægelse.In this form, the seal meets the requirement for low friction and easy valve movement.

15 Formålstjenligt forsynes ventilsædet eller selve vcntillegcmet med en gummielastisk belægning, som anført i krav 5, af hensyn til ventilens lydniveau og holdbarhed.Conveniently, the valve seat or the valve seat itself is provided with a rubber-elastic coating, as set forth in claim 5, for the sound level and durability of the valve.

Blæsepistolen ifølge opfindelsen kan i lighed med sædvanlige trykluftblæsepistoler kombineres med en ejektor for tilførsel af væske eller komet materiale samtidig med luften, jvf krav 6.The blowing gun according to the invention can, like conventional compressed air blowing guns, be combined with an ejector for supplying liquid or comet material simultaneously with the air, according to claim 6.

20 Kombinationen af pulserende trykluft og et additivt rense- eller opløsningsmiddel bevirker en kraftig forøgelse af renseeffekten, og benyttes i særlige tilfælde, hvor denne forøgede effekt er påkrævet.The combination of pulsating compressed air and an additive cleaning or solvent causes a significant increase in the cleaning effect, and is used in special cases where this increased effect is required.

Opfindelsen skal forklares nærmere i forbindelse med tegningen, hvor 25 fig. 1 viser en trykluftblæsepistol ifølge opfindelsen i sidcbillcdc, fig. 2 et dysemundstykke til denne blæsepistol i forstørret snitbillede, 30 fig. 3 blæsepistolens oscillations-afspærringsvcntil vist separat i forstørret snit på langs, fig. 4 et ejektormundstykke beregnet til brug ved tilsætning af væske samtidig med trykluften, fig. 5 et lignende ejektormundstvkke beregnet til sandblæsning, og 35 fig. 6 en kombineret ejektor-blandeventil med tilgang for luft og to forskellige væsker samtidig.The invention will be explained in more detail in connection with the drawing, in which FIG. 1 shows a compressed air blower gun according to the invention in sidcbillcdc, fig. 2 shows a nozzle nozzle for this blow gun in an enlarged sectional view, FIG. 3 shows the oscillation cut-off angle of the blow gun, shown separately in enlarged longitudinal section; FIG. 4 shows an ejector nozzle intended for use with the addition of liquid simultaneously with the compressed air; FIG. 5 shows a similar ejector nozzle for sand blasting, and FIG. 6 a combined ejector mixing valve with air and two different liquids at the same time.

I den på tegningens fig. 1 viste udførelsesfomi består blæsepistolen i det væsentlige af en 40 håndtagssektion 1 (pistolgreb) med udløsergrcb 2 og beskyttelsesbøjle 3, et forlængerstykke 4 og et udskifteligt dyserør 5. Dyserøret er forsynet med et udskifteligt dysehoved 6. Dette er vist separat i fig. 2. Håndtagssektionen 1 indeholder en ikke vist afspærringsventil, som åbnes v hj af udløsergrebet 2, samt en oscillerende trvkudladerventil. Trvkudladerventilen er indbygget i den med la markerede del af håndtagssektionen. Lufttilslutningen til blæsepistolen sker via en ^ 45 slangekobling 7. Dyserøret 5 er monteret på håndtagssektionen 1 v hj af en rouletteret omløbermøtrik 8.In the FIG. 1, the blow gun consists essentially of a handle section 1 (pistol grip) with release handle 2 and protective bracket 3, an extension piece 4 and a replaceable nozzle tube 5. The nozzle tube is provided with a replaceable nozzle head 6. This is shown separately in FIG. 2. The handle section 1 contains a not shown shut-off valve which is opened by the release lever 2, and an oscillating tripod charging valve. The transom pad valve is built into the portion marked with la in the handle section. The air connection to the blow gun is via a ^ 45 hose coupling 7. The nozzle tube 5 is mounted on the handle section 1v of a roulette nut nut 8.

3 DK 170523 B1 I fig. 3 er den oscillerende trykudladerventil vist særskilt i snit. Trykudladcrventilen består i hovedsagen af en sædeventil, hvis ventilsædc er angivet med 9 og vcntillcgeme med 10. Ventillegemet har form som et aflangt, omdrejningssymmetrisk legeme, der er gennemboret på langs. Ventillegemets ene ende danner en konusformet tætningsskive 11, der ligger tætnende an 5 mod sædet 9. Den konusformede del 11 er forsynet med en påvulkaniseret gummibelægning 11a.3 DK 170523 B1 In fig. 3, the oscillating pressure relief valve is shown separately in section. The pressure relief valve consists essentially of a seat valve whose valve seat is indicated by 9 and the valve body by 10. The valve body is in the form of an elongated, rotationally symmetrical body pierced longitudinally. One end of the valve body forms a tapered sealing disc 11 which seals 5 against the seat 9. The tapered portion 11 is provided with a vulcanized rubber coating 11a.

Den modsatte ende af ventillegemet 10 danner et stempel 12, der befinder sig indlejret i en cylinder 13. Mellem stemplet 12 og konusdelen 11 består ventillcgemct af et aflangt cylindrisk skaftstykke 14.The opposite end of the valve body 10 forms a piston 12 which is embedded in a cylinder 13. Between the piston 12 and the cone part 11, the valve body consists of an elongated cylindrical shank 14.

10 Gennemboringen på langs i ventillegemet - på tegningen angivet med 15 - bevirker, at den bagerste del 13a af cylinderen 13 står i forbindelse med luftkanalen 16 efter sædeventilen 11, dvs med forlængerrøret 4 og dyserøret 5. Ventillegcmet holdes i anlæg mod sædet af en skruetrykfjeder 17, der er indsat i cylinderen 13 bag .stemplet 12.The longitudinal piercing in the valve body - in the drawing indicated by 15 - causes the rear part 13a of the cylinder 13 to communicate with the air duct 16 after the seat valve 11, ie with the extension tube 4 and the nozzle tube 5. The valve body is held against the seat by a screw pressure spring. 17 which is inserted into the cylinder 13 behind the piston 12.

15 Den anden side 13b af cylinderen er via en excentrisk placeret og på langs gennemgående boring 18 forbundet med et luftkammer 19, der befinder sig middelbart foran sædeventilen på dennes trykside. Luftens strømningsretning gennem ventilen er angivet med pile 20.The other side 13b of the barrel is connected via an eccentric and longitudinally through bore 18 to an air chamber 19 located immediately in front of the seat valve on its pressure side. The direction of air flow through the valve is indicated by arrows 20.

Ventillegemets stempeldel 12 er forsynet med en lavfriktions- tætningsring sammensat af en 20 teflon-skive 21 og en O-ring 22. O-ringen tjener som støtteskivc for teflonringen, som ved sit anlæg mod cylindervæggen sikrer stcmplets tæthed.The piston portion 12 of the valve body is provided with a low friction sealing ring composed of a teflon disc 21 and an o-ring 22. The o-ring serves as a support disc for the teflon ring, which, at its abutment against the cylinder wall, ensures the tightness of the stem.

Ventildimension, ventillcgcmcts størrelse og vægt, fjederkarakteristik, strømningskanalernes tværsnitsareal etc er afstemt indbyrdes, således at den tilstræbte oscillatoreffekt opstår af sig selv 25 straks der åbnes for luftgennemstrømningen (ved aktivering af udløsergrebct 2).Valve dimension, valve size and weight, spring characteristic, cross-sectional area, etc. of the flow ducts, are aligned so that the desired oscillator effect is created by itself immediately upon opening of air flow (by activating trigger lever 2).

Oscillatoreffcktcn er forklaret i det foregående og skal ikke gentages her. Under ventillcgcmcts oscillerende bevægelse åbnes og lukkes der for trykluftens passage gennem sædeventilen, hvorved den tilstræbte luftpulsation med cyklisk gentagne trykudladninger opstår. Trykstøddene fra trykudladningerne forplanter sig fra sædeventilen 9,11 videre ud gennem forlængerrøret 4, 30 dyserøret 5 og dysehovedet 6.The oscillator effects are explained above and should not be repeated here. During the oscillatory movement of the valve, the compressed air is opened and closed through the seat valve, thereby producing the desired air pulsation with cyclic repeated pressure discharges. The pressure shocks from the pressure discharges propagate from the seat valve 9,11 further out through the extension tube 4, the nozzle tube 5 and the nozzle head 6.

Blæsepistolen kan ved udskiftning af dyserøret 5 forsynes med ejektorer af forskellig art, jvf fig.The blow gun can be provided with ejectors of various kinds when replacing the nozzle tube 5, cf.

4,5 og 6.1 fig. 4 er vist en kombineret ejektor og blandcventil til væske. Væsken tilledes via en 35 slange 23. Blæsepistolens dyserør er angivet med 24. En i blandcventilcn (ejektoren) indbygget afspærringsventil lukker for væsketilførslen under virkning af væsketrykket og åbner automatisk igen, når der åbnes for trykluften.4,5 and 6.1 FIG. 4 is a combined ejector and liquid mixing valve. The liquid is supplied via a hose 23. The nozzle of the blow gun is indicated by 24. A shut-off valve built into the mixing valve (ejector) closes the liquid supply under the effect of the liquid pressure and opens again automatically when the compressed air is opened.

Blandeventilen kan alternativt fungere som ejektor, dvs med trykløs tilførsel af væske. Væsken 40 suges da til ejektoren fra en ikke vist tank eller beholder ved sædvanlig ejektorvirkning, når der ledes trykluft gennem ejektoren.Alternatively, the mixing valve can act as an ejector, ie with a pressureless supply of liquid. The liquid 40 is then sucked to the ejector from a tank or container not shown by usual ejector action when compressed air is passed through the ejector.

Både som blandeventil og ejektor er væskemængden regulerbar v hj af en flowventil anbragt ved ejektormundstykkets væskeindtag. Flowventilen betjenes via en fingeromløbsmøtrik 23a.Both as a mixing valve and an ejector, the amount of liquid is adjustable by a flow valve located at the fluid intake of the ejector nozzle. The flow valve is operated via a finger-nut 23a.

I fig. 5 er vist en ejektor til brug ved sandblæsning. Sandet suges til dysen ved ejektoreffekt via et rørformet spyd 25. Ved regulering af sugeluften gennem sugeslangen (den såkaldte falskluft) kan sandflowet tilpasses det aktuelle behov.In FIG. 5 shows an ejector for use in sandblasting. The sand is sucked to the nozzle by ejector effect via a tubular skewer 25. By adjusting the suction air through the suction hose (the so-called false air), the sand flow can be adjusted to the current need.

4545

Claims (6)

1. Blæsepistol til trykluft, hvor luftens dynamiske effekt udnyttes til afrensnings- og 25 rengøringsformål, eksempelvis ved rengøring af landbrugsredskaber, automobilundervogne og lignende opgaver, hvor snavs, støv, olie og andre løse eller fastsiddende belægninger fjernes med trykluft alene eller i kombination med rensemidler af typen vand, rensevæske, sand, slibekorn etc, som tilføres luftstrålen umiddelbart inden denne rettes mod rcnscobjektet for frembringelse af en additiv smudsopløsende og/ellcr abrasiv virkning, og hvilken blæsepistol er af en art med 30 indbygget oscillatorventil for frembringelse af en pulserende luftstrøm med periodisk gentagne trykudladninger, kendetegnet ved, at oscillatorvcntilen er af en type, som i princippet svarer til en hurtigudlufterventil, som ved egen kraft og under virkning af trykluftens statiske og dynamiske effekt er indrettet til at oscillere med en rekvens af størrelsesordenen 2-50 Hz, hvorunder 35 ventilen vekselvis åbner og lukker for luftstrømmen gennem blæsepistolen, og at denne oscillatorventil er udformet som en sædeventil med et på langs forskydeligt, aflangt ventillegeme (10), hvis ene ende ligger i tætnende og for luftstrømmen gennem pistolen spærrende anlæg mod et ventilsæde (9) under virkning af en trykfjeder (17), og hvis anden ende er udformet som et stempel (12), der er indsat forskydeligt i en lukket cylinder (13), hvis ene side (13a) - nærmere 40 bestemt den side, som vender bort fra sædet - står i forbindelse med luftkanalen (16) i blæsepistolen efter sædeventilen via en på langs gennem ventillegemet gående boring (15), og e hvis anden side (13b) står i forbindelse med tryksiden (19) foran sædet, dvs i den del af luftgennemstrømningskanalen i pistolen, som befinder sig foran sædeventilen, fortrinsvis via en kanal eller boring (18), som udmunder umiddelbart foran sædeventilen. j 451. Compressed air blowing gun, in which the dynamic effect of the air is utilized for cleaning and cleaning purposes, for example by cleaning agricultural implements, automobile undercarriages and similar tasks where dirt, dust, oil and other loose or stuck coatings are removed with compressed air alone or in combination with cleaning agents of the type of water, cleaning fluid, sand, grit, etc, which is applied to the jet of air immediately before it is directed to the target object to produce an additive soil-dissolving and / or abrasive effect, and which blow gun is of a kind with a built-in oscillator valve for producing a pulsating air periodically repeated pressure discharges, characterized in that the oscillator valve is of a type which corresponds in principle to a rapid-discharge valve which, by its own power and under the effect of the static and dynamic power of the compressed air, is arranged to oscillate at a frequency of the order of 2-50 Hz, under which the valve alternately opens and closes the air flow through the blow gun and that this oscillator valve is designed as a seat valve with a longitudinally displaceable elongated valve body (10), one end of which is sealed and the air flow through the gun locking against a valve seat (9) under the effect of a compression spring (17), the other end of which is formed as a piston (12) slidably inserted into a closed cylinder (13), one side (13a) - more specifically the side facing away from the seat - stands in connection with the air duct (16) in the blow gun after the seat valve via a longitudinal bore (15) passing through the valve body, and e whose other side (13b) communicates with the pressure side (19) in front of the seat, ie in that part of the air flow duct in the gun , which is in front of the seat valve, preferably via a channel or bore (18), which opens directly in front of the seat valve. j 45 2. Blæsepistol ifølge krav l, k e n d e t e g n e t ved, at det omtalte stempel (12), som udgør ventillegemets ene ende. er forsynet med en tætningsring af lavfriktionstypen, eksempelvis af , DK 170523 B1 teflon eller et tilsvarende materiale med gode glideegenskaber, og at tætningsringen er konstrueret og dimensioneret til at ligge tætnende an mod cylindervæggen med et lavest muligt radiært tryk.2. A blow gun according to claim 1, characterized in that said piston (12) constitutes one end of the valve body. is provided with a low-friction type sealing ring, for example, from DK 170523 B1 Teflon or a similar material with good sliding properties, and that the sealing ring is designed and dimensioned to abut against the cylinder wall with the lowest possible radial pressure. 3. Blæsepistol ifølge krav 2, k e n d et e g n e t ved, at tætningsringen er sammensat af en relativ 5 tynd teflonring (21), som støttes på den ene side af en O-ring (22), og at begge ringe er indlejret i et ringformet spor i stemplet.Blow gun according to claim 2, characterized in that the sealing ring is composed of a relatively thin teflon ring (21) which is supported on one side by an O-ring (22) and that both rings are embedded in an annular grooves in the piston. 4. Blæsepistol ifølge krav \,kendetegn et ved, at den del af ventillegemet, som ligger tætnende an mod sædet (9) består af eller er belagt med et gummielastisk materiale (11a), 10 fortrinsvis af polvurethan, syntetisk gummi eller et lignende elastisk materiale med høj udmattelsesstvrke.Blow gun according to claim 1, characterized in that the part of the valve body which seals against the seat (9) consists of or is coated with a rubber elastic material (11a), preferably of polyurethane, synthetic rubber or a similar elastic. material with high fatigue strength. 4 DK 170523 B1 I fig. 6 er vist en injektor-blande ventil 26. som foruden en lufttilgang 27 er forsynet med to ekstra 5 indgange 28 og 29 for tilsætning af henh. vand og flydende kemikalie. Konstruktionen åbner mulighed for blanding af luft + vand + kemikalie i en og ' samme "stråle". Denne kombination er nyttig bl a ved opgaver, hvor der skal desinficeres eller renses fedt af.4 DK 170523 B1 In fig. 6 shows an injector mixer valve 26. which, in addition to an air inlet 27, is provided with two additional 5 inputs 28 and 29 for the addition of the same. water and liquid chemical. The design allows for the mixing of air + water + chemical in one and the same "beam". This combination is useful, among other things, for tasks that need to be disinfected or greased. 10 Blandeventilen kan anvendes i følgende kombinationer: 1. kun luft (begge væskeindtag er tilproppet eller lukket på anden måde), 2. luft + justerbar vandmængde, 3. luft + justerbar vandmængde + justerbar kcmikalicmængde, 4. luft + justerbar kemikaliemængde, 15 5) luft + vandopløst kemikalie + justerbar (kone) kemikalie, 6. lufttørring efter afrensning med vand/kemikalie. Opfindelsen er ikke begrænset til den på tegningen viste og ovenfor forklarede udførelsesform. Andre former for oscillerende trykudladcrventilcr er således mulige. Den primære ide i 20 opfindelsen er omdannelsen af trykluftens statiske energi til en pulserende, koncentreret luftstrålc med høj dynamisk energiindhold i de enkelte trykudladninger.10 The mixing valve can be used in the following combinations: 1. only air (both fluid inlets are plugged or otherwise closed), 2. air + adjustable amount of water, 3. air + adjustable amount of water + adjustable chemical amount, 4. air + adjustable amount of chemical, 15 5 ) air + water dissolved chemical + adjustable (wife) chemical, 6. air drying after rinsing with water / chemical. The invention is not limited to the embodiment shown and explained in the drawing. Other forms of oscillating pressure relief valves are thus possible. The primary idea of the invention is the conversion of the static energy of the compressed air into a pulsating, concentrated air jet with high dynamic energy content in the individual pressure discharges. 5. Blæsepistol ifølge krav 1, hvor pistolen på i og for sig kendt måde er sammensat af en "pistoldel" (1) og en dysedel (4,5), hvor pistoldclcn danner et greb, som er forsynet med en 15 udløsermekanisme (= afspærringsventil) (2) for trykluften, og hvor dysen (5,6) eller dysedelen i sin helhed er udskiftelig, k e n d e t e g n e t ved, at den nævnte oscillatorvcntil er indbygget eller integreret i pistoldclcn, og at der i tilslutning til dyscn/dyscdclcn kan monteres en ejektordel af sædvanlig art for tilførsel af rensevæske, vand, sand eller anden form for tilsætning til den pulserende trykluft for opnåelse af den omtalte additive virkning, hvorhos vandmængden er 20 justerbar fra 0 liter/min og opefter, og således, at injektoren fortrinsvis både kan fungere ved egentlig injektoreffekt, dvs sclvansugendc, og ved tilførsel af vand/væske med overtryk fra en extern pumpe eller et tryk-reservoir.A blow gun according to claim 1, wherein the gun is composed in a manner known per se, of a "gun part" (1) and a nozzle part (4,5), wherein the gun clutch forms a grip provided with a release mechanism (= (2) for the compressed air, and wherein the nozzle (5,6) or the nozzle part is fully interchangeable, characterized in that said oscillator valve is built into or integrated in the gun valve and that in connection with the nozzle / nozzle valve a ejector part of the usual type for supply of cleaning liquid, water, sand or other form of addition to the pulsating compressed air to obtain the said additive effect, the water volume being adjustable from 0 liters / min upwards, and so that the injector can preferably both function at actual injector power, i.e., scavenging, and by supplying water / liquid with overpressure from an external pump or pressure reservoir. 6. Blæsepistol ifølge krav 5, og hvor ejektoren er beregnet til væske, k e nd et e g n e t ved, at 25 der i ejektoren er indbygget en afspærringsventil for væsken, hvilken afspærringsventil er indrettet til aktivering, dvs åbning, under virkning af lufttrykket i ejektoren eller dyserøret, når blæsepistolen aktiveres. 30A blow gun as claimed in claim 5, wherein the ejector is intended for liquid, characterized in that a liquid shut-off valve is provided in the ejector, which is designed to actuate, i.e. open, under the air pressure of the ejector or the nozzle tube when the blow gun is activated. 30
DK68791A 1991-04-17 1991-04-17 Compressed air blower DK170523B1 (en)

Priority Applications (11)

Application Number Priority Date Filing Date Title
DK68791A DK170523B1 (en) 1991-04-17 1991-04-17 Compressed air blower
DE69206140T DE69206140T2 (en) 1991-04-17 1992-04-13 JET GUN FOR COMPRESSED AIR.
PCT/DK1992/000122 WO1992018260A1 (en) 1991-04-17 1992-04-13 Blast gun for compressed air
RU93057725A RU2107558C1 (en) 1991-04-17 1992-04-13 Pneumatic dust remover
EP92909449A EP0580711B1 (en) 1991-04-17 1992-04-13 Blast gun for compressed air
JP50846792A JP2638302B2 (en) 1991-04-17 1992-04-13 Injector for compressed air
AU16566/92A AU655974B2 (en) 1991-04-17 1992-04-13 Dusting gun
BR9205897A BR9205897A (en) 1991-04-17 1992-04-13 Compressed air jet gun
ES92909449T ES2081107T3 (en) 1991-04-17 1992-04-13 COMPRESSED AIR DUST GUN.
CA002108543A CA2108543C (en) 1991-04-17 1992-04-13 Blasting gun for compressed air
HU9302926A HU217286B (en) 1991-04-17 1992-04-13 Pulsatory spray gun

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK68791 1991-04-17
DK68791A DK170523B1 (en) 1991-04-17 1991-04-17 Compressed air blower

Publications (3)

Publication Number Publication Date
DK68791D0 DK68791D0 (en) 1991-04-17
DK68791A DK68791A (en) 1992-10-18
DK170523B1 true DK170523B1 (en) 1995-10-16

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ID=8096393

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Application Number Title Priority Date Filing Date
DK68791A DK170523B1 (en) 1991-04-17 1991-04-17 Compressed air blower

Country Status (11)

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EP (1) EP0580711B1 (en)
JP (1) JP2638302B2 (en)
AU (1) AU655974B2 (en)
BR (1) BR9205897A (en)
CA (1) CA2108543C (en)
DE (1) DE69206140T2 (en)
DK (1) DK170523B1 (en)
ES (1) ES2081107T3 (en)
HU (1) HU217286B (en)
RU (1) RU2107558C1 (en)
WO (1) WO1992018260A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103624038A (en) * 2013-12-23 2014-03-12 中国石油大学(华东) Flexible blast-jet type pipe cleaner for crude oil pipeline

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE503140C2 (en) * 1992-05-07 1996-04-01 Dart Engineering Ag Device at media transmitting unit
US5966847A (en) * 1996-03-14 1999-10-19 Concept Engineering Group, Inc. Pneumatic excavator
KR101053440B1 (en) * 2008-11-24 2011-08-02 한전케이피에스 주식회사 Cleaning gun
CN101813213B (en) * 2010-04-30 2012-05-23 重庆华林自控仪表股份有限公司 Self-cleaning type baiting valve
CN103263984B (en) * 2013-04-22 2015-08-26 宁波美志工具有限公司 A kind of irrigation rig
CN104324822B (en) * 2014-09-25 2017-03-15 北京北机机电工业有限责任公司 A kind of injection apparatus
JP6730070B2 (en) * 2016-04-21 2020-07-29 ダイセン株式会社 Air nozzle device, air duster, and air chipper
CN107088484B (en) * 2017-06-28 2023-07-18 迈德乐喷雾***广州有限公司 Small-sized air atomizing nozzle
WO2019082456A1 (en) * 2017-10-24 2019-05-02 日本精工株式会社 Nozzle structure, blowing device, and method for producing components, bearings, direct-acting devices, steering devices and vehicles
JP7083674B2 (en) * 2018-03-22 2022-06-13 株式会社マキタ Portable blower
KR101878688B1 (en) * 2018-05-29 2018-07-27 대한민국 Apparatus and method for removing corrosive compounds from metal cultural property
CN111006939B (en) * 2019-12-10 2021-04-13 东北大学 Hopkinson bar transmitting mechanism capable of measuring low stress wave data
KR102173863B1 (en) * 2020-07-14 2020-11-06 (주)파워엔지니어링 Fly Ash Deposit Preventative Devise for Power Plant
KR102242599B1 (en) * 2020-12-10 2021-04-20 김갑수 Air curtain type spray gun for preventing scattering and method for painting using the same
CN113020117B (en) * 2021-04-08 2022-10-11 合肥国轩高科动力能源有限公司 Piston type non-contact dust removal device
CN114427320B (en) * 2022-04-07 2022-06-14 河北润飒建筑工程有限公司 Temporary protection device for highway construction
CN118120810B (en) * 2024-05-07 2024-07-12 福州优野生态农业有限公司 Fruit and vegetable vacuum precooling equipment with high-efficiency water retention

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4077569A (en) * 1976-10-04 1978-03-07 Teledyne Industries, Inc. Fluid-flow pulsator
SU1122494A1 (en) * 1983-05-10 1984-11-07 Калининский Ордена Трудового Красного Знамени Политехнический Институт Method of hydraulic abrasive machining of parts
DE3338197A1 (en) * 1983-10-20 1985-05-02 Wolfangel & Schiemann GmbH, 7257 Ditzingen Cleaning system with pulsating compressed air
US4933017A (en) * 1987-08-28 1990-06-12 Lemaks Industries, Inc. Apparatus and method for opening drains
DE3901933A1 (en) * 1989-01-24 1990-08-02 Suttner Gmbh & Co Kg Injector arrangement, in particular for high-pressure water cleaning devices
DK166766B1 (en) * 1990-03-20 1993-07-12 K F Ind As PORTABLE HIGH PRESSURE CLEANER

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103624038A (en) * 2013-12-23 2014-03-12 中国石油大学(华东) Flexible blast-jet type pipe cleaner for crude oil pipeline

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Publication number Publication date
CA2108543C (en) 1999-11-23
AU1656692A (en) 1992-11-17
HUT66814A (en) 1995-01-30
HU9302926D0 (en) 1994-01-28
JP2638302B2 (en) 1997-08-06
CA2108543A1 (en) 1992-10-18
AU655974B2 (en) 1995-01-19
DK68791A (en) 1992-10-18
EP0580711A1 (en) 1994-02-02
DE69206140T2 (en) 1996-05-30
WO1992018260A1 (en) 1992-10-29
RU2107558C1 (en) 1998-03-27
HU217286B (en) 1999-12-28
BR9205897A (en) 1994-07-26
DK68791D0 (en) 1991-04-17
ES2081107T3 (en) 1996-02-16
DE69206140D1 (en) 1995-12-21
JPH06506868A (en) 1994-08-04
EP0580711B1 (en) 1995-11-15

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