DK169205B1 - Pressure chamber-Blower for sandblasting - Google Patents

Pressure chamber-Blower for sandblasting Download PDF

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Publication number
DK169205B1
DK169205B1 DK117882A DK117882A DK169205B1 DK 169205 B1 DK169205 B1 DK 169205B1 DK 117882 A DK117882 A DK 117882A DK 117882 A DK117882 A DK 117882A DK 169205 B1 DK169205 B1 DK 169205B1
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Denmark
Prior art keywords
container
compressed air
control valve
hose
valve
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DK117882A
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Danish (da)
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DK117882A (en
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Heinz Brennecke
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Heinz Brennecke
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24CABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C7/00Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts
    • B24C7/0046Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a gaseous carrier
    • B24C7/0069Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a gaseous carrier with means for preventing clogging of the equipment or for preventing abrasive entering the airway

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cleaning In General (AREA)
  • Spray Control Apparatus (AREA)
  • Knitting Machines (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Air Bags (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Processing Of Meat And Fish (AREA)
  • Safety Valves (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Abstract

1. Pressure chamber abrasive blasting device, comprising a blasting medium container (1) provided with a blasting medium filler aperture (3) which is sealable by means of sealing cone (2), and comprising a blasting nozzle connected to the blasting medium container (1) by means of blasting hose (4), wherein the blasting medium container (1) and the blasting hose (4) are connected to a source of compressed air through the intermediary of a pressure medium control valve (5), and the sealing cone (2) extends into the pressure medium supply line (6), which extends into the container (1), in such a manner that said cone is actuated into its sealing direction by the inflowing pressure medium, characterised in that a two-/three-way valve is provided as the pressure medium control valve (5) and is pneumatically actuable by an additional two-/three way valve serving as sensor (7), and the pressure medium control valve (5) controls a pressure medium line which forms branches to the blasting medium container (1) and to the blasting hose (4), wherein a water separator (9) is disposed between the pressure medium control valve (5) and the container (1) upstream of the branching junction (10), and a non-return valve (12) is disposed in the branch (8) extending to the blasting hose (4).

Description

DK 169205 B1DK 169205 B1

Opfindelsen vedrører en trykkammer-stråleblæser til blæs-5 ning af et blæsemedium, for eksempel sand eller et lignende materiale, og bestående af en blæsemediumbeholder med en ifyldningsåbning for blæsemediet, hvilken åbning kan lukkes ved hjælp af en lukkekegle, og en stråledyse, der er forbundet med beholderen gennem en blæseslange, hvorved behol-10 deren og blæseslangen via en trykluftstyreventil er forbundet med en trykluftkilde, og lukkekeglen er anbragt på en sådan måde i en tryklufttilførselsledning, der fører ind i beholderen, at lukkekeglen kan bevæges mod sin lukkestilling af den indstrømmende trykluft.BACKGROUND OF THE INVENTION The invention relates to a pressure chamber jet blower for blowing a blowing medium, for example sand or similar material, and comprising a blowing medium container having a filling opening for the blowing medium, which opening can be closed by means of a closing cone and a jet nozzle which is connected to the container through a blow hose, whereby the container and blow hose are connected via a compressed air control valve to a source of compressed air, and the closing cone is arranged in such a manner in a compressed air supply line that leads into the container that the closing cone can be moved towards its closing position by it. inflowing compressed air.

1515

Trykkammer-stråleblæsere af denne slags har i og for sig vist sig at være gode, da man har opnået gode resultater med dem. Der er dog en række ulemper af funktionel art, specielt den ulempe, at blæsemediumbeholderen efter lukning 20 af blæsemediumstyreventilen til at begynde med forbliver under tryk, og trykaflastning henholdsvis udluftning indtil fuldstændig udblæsning af den i blæsemediumbeholderen oplagrede luft, efter lukning af den som to-vejsventil udførte styreventil, kan ske gennem blæseslangen med tilsvarende 25 efterblæsning af blæsemedium.Pressure chamber jet fans of this kind have proven to be good in themselves, as good results have been obtained with them. However, there are a number of disadvantages of a functional nature, in particular the disadvantage that the blowing medium container, after closing 20 of the blowing medium control valve, initially remains under pressure, and pressure relief and venting, respectively, to completely exhaust the air stored in the blowing medium container, after closing it as two. control valve performed control valve can be done through the blowing hose with corresponding 25 after blowing of blowing medium.

For at undgå denne ulempe er det kendt, for eksempel fra US patentskrift nr. 2 729 917, at forsyne stråledysen med en lukkeventil og at anbringe yderligere en ventil som udluft-30 ningsventil på blæsemediumbeholderen, hvilket muliggør en trykaflastning af beholderen, og hvorigennem beholderen efter blæsning kan trykaflastes, for eksempel med henblik på påfyldning af blæsemedium.To avoid this disadvantage, it is known, for example, from U.S. Patent No. 2,729,917, to provide the jet nozzle with a shut-off valve and to apply an additional valve as a venting valve to the blowing medium container, which allows a pressure relief of the container and through which the container after blowing, pressure relief can be relieved, for example, for filling of blowing medium.

35 Derved muliggøres nemlig en lukning af trykkammer-stråle-blæseren ved hjælp af en på selve stråledysen anbragt luk- 2 DK 169205 B1 keindretning, så den ellers nødvendige tilbagelægning af en kortere eller længere vej til den på stråleblæseren anbragte hovedstyreventil under fuld gennemstrømning af blæseme-dium ikke længere behøves; den efter blæseprocessen nødven-5 dige og foreskrevne trykaflastning af blæsemediumbeholderen kan dog stadigvæk kun ske på selve beholderen, så der ved åbning af ventilen kan medrives store mængder blæsemedium af den pludseligt ud af blæseslangen gennem blæsemediumsøj-len tilbagestrømmende luft, hvilke mængder blæsemedium le-10 des ud af blæsemediumbeholderen gennem udluftningsventilen, som dermed på grund af det ifølge sin natur skarpe blæsemedium er udsat for stor slitage. Derudover sker der herved tab af en større mængde blæsemedium samt en specielt i lukkede rum uforsvarlig støvforurening af omgivelserne. Lige-15 ledes er den på stråledysen anbragte lukke indretning udsat for temmelig stor slitage, eftersom alt blæsemediet under udblæsningen passerer gennem lukkeindretningens kegleformede udboring.This allows a closure of the pressure chamber jet blower by means of a closure arranged on the jet nozzle itself, so that the otherwise necessary return of a shorter or longer path to the main control valve arranged on the jet blower during full flow -dium is no longer needed; the necessary and prescribed pressure relief of the blowing medium container after the blowing process can, however, still only be done on the container itself, so that when opening the valve large quantities of blowing medium can be entrained from the blowing tube backwards through the blowing medium column, which quantities of blowing medium 10 is removed from the blowing medium container through the vent valve, which, due to the inherently sharp blowing medium, is subject to great wear. In addition, there is a loss of a larger amount of blowing medium as well as an unsustainable dust pollution of the surroundings, especially in confined spaces. Similarly, the closure device located on the jet nozzle is subject to fairly high wear since all the blowing medium during the blowout passes through the cone-shaped bore of the closure device.

20 Endelig er det fra BE patentskrift nr. 409 758 kendt at forsyne blæsemediumbeholderen med en firevejs-ventil ved hjælp af hvilken blæseslangen og beholderen via adskilte ledninger såvel kan være i brug samtidigt som at blive udluftet samtidigt. Der frembyder sig ved denne kendte udfø-25 relse de samme ulemper som ved de foran beskrevne indretninger, nemlig at trykaflastningen af blæsemediumbeholderen kun kan ske på selve beholderen, hvorved store mængder blæsemedium kan føres ud via styreventilen, som - ved tilsvarende store tab af blæsemedium - udsættes for et dertil 30 svarende stort slid.Finally, from BE Patent No. 409,758, it is known to supply the blowing medium container with a four-way valve by means of which the blowing hose and the container can be used simultaneously as well as being vented at the same time via separate lines. In this known embodiment, the same drawbacks occur as with the devices described above, namely that the pressure relief of the blowing medium container can only be carried out on the container itself, whereby large quantities of blowing medium can be discharged via the control valve, which - by correspondingly large losses of blowing medium - subject to a correspondingly large wear corresponding to 30.

Det er formålet med den foreliggende opfindelse at angive en sådan udformning af den i indledningen omhandlede tryk-kammer-stråleblæser, at de med de kendte indretninger for-35 bundne ulemper kan undgås, så der kan spares blæsemedium, idet forurening af omgivelserne kan undgås og slid på de DK 169205 B1 3 enkelte komponenter kan begrænses til et minimum.It is the object of the present invention to provide such a design of the pressure chamber jet blower referred to in the introduction, that the disadvantages associated with the known devices can be avoided so that blowing medium can be saved, as pollution of the environment can be avoided and wear on the DK 169205 B1 3 individual components can be minimized.

Dette formål opnås ved en trykkammer-stråleblæser af den indledningsvist angivne art, hvilken trykkammer-stråleblæ-5 ser ifølge opfindelsen er særegen ved, at der som trykluftstyreventil er anvendt en to-/trevejsventil, der kan styres pneumatisk af endnu en to-/trevejsventil, der er udformet som betjeningstast på stråledysen, at trykluftstyreventilen i en første stilling kan lede trykluft til en fæl-10 les trykmiddel ledning, der via en forgrening forgrener sig til den til beholderen førende tryklufttilførselsledning og til blæseslangen, og hvori der mellem trykluftstyreventilen og beholderen før forgreningen er anbragt en udskiller og i den til blæseslangen førende gren eller blæseslangeledning 15 er anbragt en kontraventil, og at trykluftstyreventilen i en anden stilling kan udlufte den fælles trykmiddelledning og dermed hele trykkammer-stråleblæseren til atmosfæren.This object is achieved by a pressure chamber radiator fan of the type mentioned initially, which pressure chamber radiator fan according to the invention is special in that a two / three way valve which can be pneumatically controlled by another two / three way valve is used as a compressed air control valve. which is designed as a control key on the jet nozzle that the compressed air control valve in a first position can direct compressed air to a common pressurized conduit which branches via a branch to the compressed air supply line and to the blow hose, and between the compressed air control valve and the compressed air control valve. prior to the branching, a separator is placed and a non-return valve is arranged in the branch or blower line 15 leading to the blower hose and the compressed air control valve in another position can vent the common pressure fluid line and thus the entire pressure chamber blower to the atmosphere.

Ifølge opfindelsen er der tilvejebragt en trykkammer-strå-20 leblæser, hvor der samtidigt med lukning for tryklufttilførslen sker en udluftning af beholderen ved, at beholderen via tryklufttilførselsledningen, der nu tjener som udluftningsledning, og via styreventilens R-tilslutning åbnes automatisk mod atmosfæren. Den på beholderen anbragte yderli-25 gere udluftningsventil kan så undværes, da alle nødvendige funktioner styres af en enkelt ventil. En yderligere væsentlig fordel ved stråleblæseren ifølge opfindelsen opnås ved, at trykaflastningen ikke sker direkte gennem en ventil, der åbnes umiddelbart mod atmosfæren, men gennem den i 30 toppen af beholderen anbragte lukkekeglestyring, hvorigennem der ikke føres afslidende blæsemedium, eller i hvert fald kun forsvindende små mængder, med ud. Herigennem opnås tillige ikke bare en selvstændig udluftning af stråleblæ-serudstyret samtidigt med spærring for tryklufttilførslen, 35 men også den samlede trykluft- og blæsemediumstyring fra stråledysen på den måde, at trykluftstyreventilen umiddel- 4 DK 169205 B1 bart omstyres sammen med betjeningstastens lukning, hvorigennem der følger en trykaflastning via tryklufttilførselsledningen. Herved tjener den efter trykluftstyreventilen i luftstrømsretningen anbragte udskiller som selvrensende 5 støvfilter, ved hjælp af hvilket både trykluftstyreventilen og atmosfæren i tilstrækkelig grad beskyttes mod enhver form for medrevet støv henholdsvis blæsemedium, hvilken udskiller umiddelbart ved genoptagelse af blæseprocessen renses ved tilbagespuling af den nu igen i beholderen henhold-10 svis blæseslangen indstrømmende trykluft.According to the invention there is provided a pressure chamber jet blower, in which, simultaneously with closing of the compressed air supply, a venting of the container is effected by opening the container via the compressed air supply line, which now serves as the venting line, and via the control valve R connection automatically to atmosphere. The additional vent valve located on the container can then be dispensed with, since all necessary functions are controlled by a single valve. A further substantial advantage of the jet blower according to the invention is achieved by the fact that the pressure relief does not take place directly through a valve which opens directly to the atmosphere, but through the closure cone control located in the top of the container, through which no abrasive blowing medium is passed, or at least only vanishingly. small amounts, with out. Hereby not only is a separate venting of the jet blower equipment simultaneously with blocking of the compressed air supply, but also the total compressed air and blowing medium control from the jet nozzle, in that the compressed air control valve can be directly controlled with follows a pressure relief via the compressed air supply line. Hereby, the separator disposed after the compressed air control valve in the air flow direction serves as a self-cleaning dust filter, by which both the compressed air control valve and the atmosphere are adequately protected against any kind of entrapped dust or blowing medium which separates immediately upon resumption of the blowing process in the recirculation process. the container or blower hose, respectively, inflowing compressed air.

Ved anbringelse af en kontraventil, hvilket hensigtsmæssigt sker i størst mulig afstand fra udmundingen i blæseslangen, opnås endvidere, at den i denne forgrening tilbagestrømmen-15 de luft ved aflastning af betjeningstasten og derved lukning af den på stråledysen anbragte ventil samt den herigennem betingede åbning af trykluftstyreventilen mod det fri lukker kontraventilen stadig inde i luftsøjlens område, det vil sige før det af luften medførte blæsemedium har nå-20 et endsige passeret kontraventilen. Herved beskyttes selve kontraventilen mod slitage, og udskilleren, der i denne driftsfase virker som filter, beskyttes mod overbelastning som følge af en overmåde stor mængde tilbagestrømmende blæsemedium.Furthermore, by placing a non-return valve, which is conveniently spaced as far as possible from the outlet in the blower hose, it is obtained that the air flowing back into this branch by relieving the operating key and thereby closing the valve disposed on the jet nozzle and the opening of the conditional the compressed air control valve towards the outside still closes the check valve within the air column area, that is, before the blowing medium brought by the air has reached or even passed the check valve. This protects the check valve itself against wear, and the separator, which acts as a filter during this operating phase, is protected against overload due to an excessive amount of backflow blowing medium.

2525

Det af den tilbagestrømmende luft medførte blæsemedium, som befinder sig i blæseslangen, føres altså udelukkende tilbage til beholderen og tilbageholdes af blæsemediumsøjlen, hvorved det fra blæsemediumsøjlen eventuelt medrevne blæse-30 medium henholdsvis støvpartikler i det væsentlige tilbageholdes af lukkekeglen ved beholderens påfyldningsåbning. Derefter filtreres eventuelt yderligere medførte fine støvpartikler fra i udskilleren.Thus, the blowing medium caused by the backflowing air contained in the blowing hose is returned solely to the container and is retained by the blowing medium column, whereby the blowing medium or dust particles, if any, of the blowing medium, which is substantially contained, are retained by the closing cone. Then, if necessary, any additional fine dust particles are filtered off in the separator.

35 Trykkammer-stråleblæseren ifølge opfindelsen vil blive forklaret nærmere i det nedenstående under henvisning til teg- DK 169205 B1 5 ningen, hvor:The pressure chamber beam blower according to the invention will be explained in more detail below with reference to the drawing, where:

Fig. 1 skematisk fremstiller en trykkammer-stråleblæser ifølge opfindelsen med en pneumatisk styret regu-5 leringsventil, fig. 2 skematisk fremstiller en trykkammer-stråleblæser ifølge opfindelsen med en manuelt betjenbar enarmet styreventil, 10 fig. 3 viser den i fig. 2 afbildede ventil i udluftningsstilling, og fig. 4 viser den i fig. 2 afbildede ventil i spulestil-15 ling.FIG. 1 schematically produces a pressure chamber jet blower according to the invention with a pneumatically controlled control valve; FIG. Figure 2 is a schematic representation of a pressure chamber jet blower according to the invention with a manually operated single-arm control valve; 3 shows the one shown in FIG. 2 in the vent position, and FIG. 4 shows the one in FIG. 2 depicted valve in flush position.

På tegningen er vist en trykkammer-stråleblæser med en blæ-semediumbeholder 1, der er forsynet med en åbning 3 for ifyldning af blæsemedium, for eksempel sand eller et lig-20 nende materiale. Åbningen 3 kan lukkes ved hjælp af en lukkekegle 2, der er anbragt i en tryklufttilførselsledning 6, som fører ind i beholderen 1. En på tegningen ikke vist stråledyse er forbundet med beholderen 1 ved hjælp af en blæseslange 4. Blæseslangen 4 og tilførselsledningen 6 er 25 over en trykluftstyreventil og en tilslutning 13 forbundet med en trykluftkilde, for eksempel en kompressor, og lukkekeglen 2 er anbragt i tilførselsledningen 6 på en sådan måde, at den trykkes mod sin lukkestilling af den gennem tilførselsledningen 6 strømmende trykluft.The drawing shows a pressure chamber jet blower having a blowing medium container 1 provided with an opening 3 for filling blowing medium, for example sand or a similar material. The opening 3 can be closed by a closing cone 2 arranged in a compressed air supply line 6 which enters the container 1. A jet nozzle not shown in the drawing is connected to the container 1 by means of a blow hose 4. The blow hose 4 and the supply line 6 are 25 over a compressed air control valve and a connection 13 connected to a compressed air source, for example a compressor, and the closing cone 2 is arranged in the supply conduit 6 in such a way that it is pressed against its closing position by the compressed air flowing through the supply conduit 6.

3030

Ved den i fig. 1 viste udførelsesform er trykluftstyreventilen en to-/trevejsventil 5, som styres pneumatisk af en to-/trevejsventil 7, der er anbragt som en betjeningstast på stråledysen. Styreventilen 5 styrer trykluft både til 35 den til beholderen 1 førende tilførselsledning 6, og til en blæseslangeledning 8, der fører til blæseslangen 4, hvilke 6 DK 169205 B1 ledninger 6, 8 er forenet i en forgrening 10 i en fælles trykmidde1ledning, der er forbundet til en A-tilslutning på styreventilen 5. I den fælles trykmiddelledning er der mellem styreventilen 5 og forgreningen 10 anbragt en udskiller 5 9 med en sinterindsats 9a. I den til blæseslangen 4 førende blæseslangeledning 8 er der umiddelbart efter forgreningen 10 anbragt en kontraventil 12.In the embodiment shown in FIG. 1, the compressed air control valve is a two / three way valve 5 which is pneumatically controlled by a two / three way valve 7 arranged as a control button on the jet nozzle. The control valve 5 directs compressed air both to the supply line 6 leading to the container 1 and to a blowing hose line 8 leading to the blowing hose 4, which 6 are connected in a branch 10 in a common pressure medium line connected For an A connection on the control valve 5. In the common pressure medium line, a separator 59 is arranged between the control valve 5 and the branch 10 with a sinter insert 9a. Immediately after the branch 10, a check valve 12 is arranged in the blow hose line 8 leading to the blow hose 4.

Ved aktivering af betjeningstasten på ventilen 7 frigives 10 en trykvej fra tilslutningen 13 til en Z-tilslutning på styreventilen 5, hvorved en R-tilslutning på styreventilen 5 lukkes, og en trykluftpassage fra en P-tilslutning til A-tilslutningen på styreventilen 5 åbnes, så den fælles trykmiddelledning fyldes med trykluft. Under påvirkning af den 15 indstrømmende trykluft hæves lukkekeglen 2 og presses mod sit sæde, og lukker dermed åbningen 3 for ifyldning af blæ-semedium, hvorfor der som følge deraf opbygges et tryk i beholderen 1. Samtidigt med denne trykopbygning åbnes kontraventilen 12, og trykluftpassagen gennem blæseslangeled-20 ningen 8 til blæseslangen 4 frigives, hvorved blæsemediet fra beholderen 1 af det deri under opbygning værende tryk føres til en indmunding 11 i blæseslangen 4. I denne driftsfase virker udskilleren 9 som vandudskiller, i hvis sinterindsats 9a den med luften indførte fugtighed udfæl-25 des, drypper ned i udskillerens sump og fra tid til anden kan fjernes gennem en bundventil.By activating the control key on the valve 7, a pressure path is released from the connection 13 to a Z-connection on the control valve 5, thereby closing an R-connection on the control valve 5 and opening a compressed air passage from a P-connection to the A-connection on the control valve 5. so that the common pressure line is filled with compressed air. Under the influence of the 15 flowing compressed air, the closing cone 2 is raised and pressed against its seat, thus closing the opening 3 for filling medium, which is why a pressure is built up in the container 1. At the same time, the pressure valve 12 is opened and the compressed air passage through the blow hose line 8 to the blow hose 4 is released, whereby the blowing medium from the container 1 of the pressure present therein under construction is fed to an inlet 11 in the blow hose 4. In this operating phase, the separator 9 acts as a water separator, in whose sinter insert 9a the moisture introduced into the air precipitates, drips into the sump of the separator and from time to time can be removed through a bottom valve.

Ved aflastning af betjeningstasten på ventilen 7 lukkes P-tilslutningen på styreventilen 5, og dens R-tilslutning mod 30 A-tilslutningen åbnes, hvorved hele trykkammer-stråleblæse-ren åbnes mod atmosfæren og udluftes gennem R-tilslutningen og en til denne forbundet lyddæmpende udluftningspatron 20. Som følge af trykaflastningen lukkes først kontraventilen 12, hvorved en tilbagestrømning af luft gennem blæseslange-35 ledningen 8 og især tilbagestrømning af blæsemedium fra blæseslangen 4 gennem kontraventilen 12 forhindres. Tilba- DK 169205 B1 7 gestrømning af trykluft og af blæsemedium sker tværtimod alene gennem beholderen 1, hvori det fra blæseslangen 4 tilbagestrømmende blæsemedium opfanges. Blæsemedium og støvmængder, der eventuelt føres med fra blæsemediumsøjlen, 5 opfanges primært ved lukkekeglen 2 og falder tilbage i beholderen 1; rest støvmængder, der er kommet over i tilførselsledningen 6, opfanges i sinterindsatsen 9a i udskilleren 9, der i denne fase virker som støvfilter. Styreventilen 5 og den omkringværende luft er således fuldstændigt 10 beskyttet mod støv.By releasing the control key on the valve 7, the P-connection on the control valve 5 is closed and its R-connection to the 30-A-connection is opened, thereby opening the entire pressure chamber blower to the atmosphere and venting through the R-connection and a sound-damping vent connected thereto. 20. As a result of the pressure relief, the check valve 12 is first closed, thereby preventing a backflow of air through the blowing hose line 8 and, in particular, backflow of blowing medium from the blowing hose 4 through the check valve 12. On the contrary, flow of compressed air and of blowing medium is effected only through the container 1, in which the blowing medium flowing back from the blowing hose 4 is collected. Blowing medium and dust quantities, which are optionally carried from the blowing medium column, 5 are mainly captured at the closing cone 2 and fall back into the container 1; residual amounts of dust that have passed into the supply line 6 are trapped in the sinter insert 9a of the separator 9, which in this phase acts as a dust filter. The control valve 5 and the surrounding air are thus completely protected against dust.

I den efterfølgende driftsfase renses udskillerens 9 sinterindsats automatisk - ligesom et tilbagespulingsfilter -igen umiddelbart for det opfangede støv.In the subsequent operation phase, the sinter insert of the separator 9 is automatically cleaned - just like a rewind filter - again immediately before the trapped dust.

1515

Ved den i fig. 2 viste udførelsesform - hvor der iøvrigt er anvendt samme henvisningsbetegnelser som i fig. 1 for de tilsvarende komponenter - er styreventilen en mekanisk trevej s -kuglehane 18, der aktiveres af en svingarm 14 med fire 20 tilslutninger 13, 15, 16, 17, hvoraf tilslutningen 13 tjener som forbindelse til den på tegningen ikke viste trykluftkilde. De to tilslutninger 15, 16, der ligger lige over for hinanden, tjener som forbindelse til beholderen 1 (tilslutning 15) henholdsvis til blæseslangen 4 (tilslutning 25 16), medens tilslutningen 17 tjener som udluftningsledning, der er forsynet med en hurtigkobling 19 for anbringelse af en lyddæmpende udluftningspatron 20. Også ved denne udførelsesform er der mellem trevejs-kuglehanen 18 og beholderen 1 anbragt en udskiller 9 med en sinterindsats 9a, der 30 dog i dette tilfælde er forsynet med en mekanisk styring og derfor kan undværes eller være placeret et andet sted, for eksempel mellem trykluftkilden og trevejs-kuglehanen 18.In the embodiment shown in FIG. 2, wherein the same reference numerals as in FIG. 1 for the corresponding components - the control valve is a mechanical three-way s-ball valve 18, which is actuated by a swing arm 14 with four 20 connections 13, 15, 16, 17, the connection 13 of which serves as a connection to the compressed air source shown in the drawing. The two connections 15, 16 which are opposite to each other serve as a connection to the container 1 (connection 15) and to the blowing hose 4 (connection 25 16) respectively, while the connection 17 serves as a vent line, which is provided with a quick coupling 19 for placement. of a sound attenuating vent cartridge 20. Also in this embodiment, a three-way ball valve 18 and the container 1 are provided with a separator 9 with a sinter insert 9a, which in this case, however, is provided with a mechanical control and can therefore be avoided or located another location, for example, between the source of compressed air and the three-way ball valve 18.

Ved den i fig. 2 viste udførelsesform er der for første 35 gang indført en simpel mekanisk én-arms-styring på en tryk-kammer-stråleblæser, og fig. 2 viser trykkammer-stråleblæ- DK 169205 B1 8 seren i driftsstilling, hvor der, når tilslutningen 17 er lukket, er forbindelse fra tilslutningen 13 og dermed fra trykluftkilden både til beholderen 1 og til blæseslangen 4. Fig. 3 viser lukkestillingen, hvor både beholderen 1 og 5 blæseslangen 4 samtidigt er forbundet med atmosfæren og dermed er trykaflastet. Fig. 4 viser trevejs-kuglehanens 18 spulestilling, for hvis funktion det er nødvendigt med frakobling af udluftningspatronen 20 og dermed automatisk lukning af hurtigkoblingen 19. I dette tilfælde, hvor blæse-10 slangeledningen 8 er lukket, føres al den indstrømmende luft gennem tilførselsledningen 6 til beholderen 1.In the embodiment shown in FIG. 2, for the first time, a simple mechanical one-arm control of a pressure chamber jet blower is introduced for the first time, and FIG. 2 shows the pressure chamber jet blower in the operating position where, when the connection 17 is closed, connection is made from the connection 13 and thus from the compressed air source both to the container 1 and to the blowing hose 4. FIG. 3 shows the closing position, where both the container 1 and 5 the blowing hose 4 are simultaneously connected to the atmosphere and thus are pressure relieved. FIG. 4 shows the flushing position of the three-way ball valve 18, for which function it is necessary to disengage the vent cartridge 20 and thus to automatically close the quick-coupling 19. In this case, when the blow-hose line 8 is closed, all the inflowing air is fed through the supply line 6 to the container. first

Claims (2)

1. Trykkammer-stråleblæser til blæsning af et blæsemedium, for eksempel sand eller et lignende materiale, og bestående 5 af en blæsemediumbeholder (1) med en ifyldningsåbning (3) for blæsemediet, hvilken åbning (3) kan lukkes ved hjælp af en lukkekegle (2), og en stråledyse, der er forbundet med beholderen (1) gennem en blæseslange (4), hvorved beholderen (1) og blæseslangen (4) via en trykluftstyreventil (5) 10 er forbundet med en trykluftkilde, og lukkekeglen (2) er anbragt på en sådan måde i en tryklufttilførselsledning (6), der fører ind i beholderen (1), at lukkekeglen (2) kan bevæges mod sin lukkestilling af den indstrømmende trykluft, kendetegnet ved, at der som trykluftstyre-15 ventil er anvendt en to-/trevejsventil (5), der kan styres pneumatisk af endnu en to-/trevejsventil (7), der er udformet som betjeningstast på stråledysen, at trykluftstyreventilen (5) i en første stilling kan lede trykluft til en fælles trykmiddelledning, der via en forgrening (10) for-20 grener sig til den til beholderen (1) førende tryklufttilførselsledning (6) og til blæseslangen (4), og hvori der mellem trykluftstyreventilen (5) og beholderen (1) før forgreningen (10) er anbragt en vandudskiller (9) og i den til blæseslangen (4) førende gren eller blæseslangeledning (8) 25 er anbragt en kontraventil (12), og at trykluftstyreventilen (5) i en anden stilling kan udlufte den fælles trykmiddelledning og dermed hele trykkammer-stråleblæseren til atmosfæren. 30A pressure chamber jet blower for blowing a blowing medium, for example sand or a similar material, and comprising a blowing medium container (1) with a filling opening (3) for the blowing medium, which opening (3) can be closed by a closing cone ( 2) and a jet nozzle connected to the container (1) through a blower hose (4), whereby the container (1) and the blower tube (4) are connected via a compressed air control valve (5) to a source of compressed air, and the closing cone (2) is arranged in such a way in a compressed air supply line (6) which leads into the container (1) that the closing cone (2) can be moved towards its closing position of the inflowing compressed air, characterized in that a compressed air control valve is used. two / three way valve (5) which can be pneumatically controlled by yet another two / three way valve (7), which is designed as a control button on the jet nozzle, that in a first position the compressed air control valve (5) can direct compressed air to a common pressure line which a branch ( 10) branches to the compressed air supply line (6) leading to the container (1) and to the fan hose (4), and in which a water separator (9) is arranged between the compressed air control valve (5) and the container (1). ) and in the branch or blow hose line (8) 25 leading to the blow hose (4) a non-return valve (12) is arranged and the compressed air control valve (5) in another position can vent the common pressure fluid line and thus the whole pressure chamber jet blower to the atmosphere. 30 2. Trykkammer-stråleblæser ifølge krav 1, kendeteg net ved, at kontraventilen (12) er anbragt i størst mulig afstand fra beholderens (1) indmundingssted (11) i blæseslangen (4).Pressure chamber jet blower according to claim 1, characterized in that the non-return valve (12) is located at the greatest possible distance from the opening (11) of the container (1) in the blowing hose (4).
DK117882A 1981-03-24 1982-03-17 Pressure chamber-Blower for sandblasting DK169205B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19813111581 DE3111581A1 (en) 1981-03-24 1981-03-24 PRINT CHAMBER JET
DE3111581 1981-03-24

Publications (2)

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DK117882A DK117882A (en) 1982-09-25
DK169205B1 true DK169205B1 (en) 1994-09-12

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DK117882A DK169205B1 (en) 1981-03-24 1982-03-17 Pressure chamber-Blower for sandblasting

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EP (1) EP0061166B1 (en)
AT (1) ATE15004T1 (en)
DE (1) DE3111581A1 (en)
DK (1) DK169205B1 (en)
FI (1) FI72448C (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8501288A (en) * 1985-05-07 1986-12-01 Rijndelta Coating Technieken B GRIT BLASTING DEVICE.
DE8907765U1 (en) * 1989-06-24 1989-10-05 Pothmann, Reinhard, 4280 Borken, De
DE3939420C2 (en) * 1989-11-29 1995-06-22 Neubauer Geb Costas Perez Merc Method and device for cutting resistant materials with a water jet
IT1249665B (en) * 1991-06-19 1995-03-09 Cie Dentalfarm S R L MICROSANDBLASTING SYSTEM AND PNEUMATIC VALVE USED IN THIS SYSTEM
DE19521051C2 (en) * 1995-06-09 1998-04-09 Woma Maasberg Co Gmbh W High pressure water jet processing device

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE409758A (en) *
US1171286A (en) * 1912-04-22 1916-02-08 Howard L Wadsworth Sand-blast machine.
US2729917A (en) * 1953-06-30 1956-01-10 William C Gregory Cleaning apparatus
US3034263A (en) * 1959-08-07 1962-05-15 Ruric N Mcdaniel Sand blasting apparatus
US3084484A (en) * 1960-11-17 1963-04-09 Sylvania Electric Prod Pneumatic abrasive cutting apparatus
US3148484A (en) * 1963-01-15 1964-09-15 Jaroco Internat Inc Sandblast generator
FR1515965A (en) * 1966-03-31 1968-06-13 Compressed air sandblaster
US3741738A (en) * 1971-04-12 1973-06-26 Pauli & Griffin Co Abrasive blasting equipment and self-cleaning abrasive trap therefore
US4026072A (en) * 1976-08-09 1977-05-31 Dremann George H Self-cleaning muffler for an abrasive blast system

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DE3111581A1 (en) 1982-10-14
EP0061166A3 (en) 1982-10-27
FI821011L (en) 1982-09-25
FI72448C (en) 1987-06-08
DK117882A (en) 1982-09-25
ATE15004T1 (en) 1985-09-15
FI72448B (en) 1987-02-27
DE3111581C2 (en) 1987-11-12
EP0061166B1 (en) 1985-08-21
EP0061166A2 (en) 1982-09-29
FI821011A0 (en) 1982-03-23

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