EP4126451A1 - Procédé de nettoyage sans eau ou à volume d'eau fortement réduit et dispositif de projection à cet effet - Google Patents

Procédé de nettoyage sans eau ou à volume d'eau fortement réduit et dispositif de projection à cet effet

Info

Publication number
EP4126451A1
EP4126451A1 EP21723119.0A EP21723119A EP4126451A1 EP 4126451 A1 EP4126451 A1 EP 4126451A1 EP 21723119 A EP21723119 A EP 21723119A EP 4126451 A1 EP4126451 A1 EP 4126451A1
Authority
EP
European Patent Office
Prior art keywords
liquid
blasting
operating medium
connection adapter
cleaning
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.)
Pending
Application number
EP21723119.0A
Other languages
German (de)
English (en)
Inventor
Jens-Werner Kipp
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.)
Mycon GmbH
Original Assignee
Mycon GmbH
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 Mycon GmbH filed Critical Mycon GmbH
Publication of EP4126451A1 publication Critical patent/EP4126451A1/fr
Pending legal-status Critical Current

Links

Classifications

    • 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
    • A61L2/16—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using chemical substances
    • A61L2/22—Phase substances, e.g. smokes, aerosols or sprayed or atomised substances
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
    • B05B7/0416—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/24—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
    • B05B7/26—Apparatus in which liquids or other fluent materials from different sources are brought together before entering the discharge device
    • B05B7/262—Apparatus in which liquids or other fluent materials from different sources are brought together before entering the discharge device a liquid and a gas being brought together before entering the discharge device
    • B05B7/267—Apparatus in which liquids or other fluent materials from different sources are brought together before entering the discharge device a liquid and a gas being brought together before entering the discharge device the liquid and the gas being both under pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B7/00—Cleaning by methods not provided for in a single other subclass or a single group in this subclass
    • B08B7/0064—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by temperature changes
    • B08B7/0092—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by temperature changes by cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
    • B24C1/003—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods using material which dissolves or changes phase after the treatment, e.g. ice, CO2
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C11/00—Selection of abrasive materials or additives for abrasive blasts
    • B24C11/005—Selection of abrasive materials or additives for abrasive blasts of additives, e.g. anti-corrosive or disinfecting agents in solid, liquid or gaseous form
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C3/00—Abrasive blasting machines or devices; Plants
    • B24C3/32—Abrasive blasting machines or devices; Plants designed for abrasive blasting of particular work, e.g. the internal surfaces of cylinder blocks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C7/00—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts
    • B24C7/0046—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a gaseous carrier
    • B24C7/0076—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a gaseous carrier the blasting medium being a liquid stream
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2202/00—Aspects relating to methods or apparatus for disinfecting or sterilising materials or objects
    • A61L2202/10—Apparatus features
    • A61L2202/15—Biocide distribution means, e.g. nozzles, pumps, manifolds, fans, baffles, sprayers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2202/00—Aspects relating to methods or apparatus for disinfecting or sterilising materials or objects
    • A61L2202/20—Targets to be treated
    • A61L2202/25—Rooms in buildings, passenger compartments
    • 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
    • B05B1/3026—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 the controlling element 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
    • B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
    • B05B9/03—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
    • B05B9/04—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump
    • B05B9/0403—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump with pumps for liquids or other fluent material
    • B05B9/0409—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump with pumps for liquids or other fluent material the pumps being driven by a hydraulic or a pneumatic fluid
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
    • G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
    • G21F9/001—Decontamination of contaminated objects, apparatus, clothes, food; Preventing contamination thereof
    • G21F9/005—Decontamination of the surface of objects by ablation

Definitions

  • the invention relates to a method for the waterless or highly water-reduced cleaning of adhesive residues, nuclear residues, production residues from the food / pharmaceutical industry or with general residues from the hospital sector and, in particular, surfaces contaminated with viruses or bacteria.
  • the invention also relates to a blasting device for this purpose.
  • the cleaning or disinfection of contaminated surfaces and objects by spraying is known. Since the spray jet hits surfaces at a relatively slow speed, the surfaces usually have to be rubbed off or processed in some other way with mechanical force because of the low breaking force of the spray jet. When using aqueous liquids by means of impregnation, a drying process is also required. This makes the process time consuming.
  • the object of the invention is to use a blasting method and a blasting device with a preferably convergent-divergent blasting nozzle to supply a gaseous operating medium at a pressure of 0.50 to 12 bar with a liquid cleaning and / or disinfectant as blasting agent to the to be cleaned surfaces to be disinfected or decontaminated to achieve a strong impact effect for the purpose of removing the contamination or a penetrating effect for the purpose of removing or killing deposits and / or bacteria or viruses.
  • cleaning, disinfection and / or decontamination can advantageously be carried out entirely without water or with a significantly reduced amount of water compared to conventional cleaning methods.
  • the cleaning, disinfecting or decontamination effect of the invention is based on the combination of the gaseous operating medium emerging at high speed with the cleaning and / or disinfecting agent attached as a blasting agent, which is added to the operating medium.
  • the amount of liquid is significantly less than the amount of the gaseous operating medium used for cleaning, disinfection or decontamination.
  • Compressed air is preferably used as the gaseous operating medium. It is particularly preferred to use less than 1000 l / min of the gaseous operating medium.
  • Suitable blasting agents or disinfectants are, for example, ethanol and / or isopropanol, optionally with the addition of other liquids, and aqueous solutions such as hydrogen peroxide, peracetic acid and / or quaternary ammonium compounds.
  • dry snow or dry ice can be added to the operating medium in addition to the liquid blasting agent.
  • cold-stable abrasives such as ethanol or isopropanol and corresponding mixtures can be added.
  • This combination of cold-stable liquids as blasting media (cleaning and / or disinfectants) and dry snow or dry ice leads to a high flow speed of the jet at a pressure of the operating medium of 0.50 to 12 bar, whereby it is caused by the friction of the jet against the surrounding atmosphere and the impact electrostatic charges occur on the surfaces to be cleaned.
  • Objects to be cleaned or the containers in which the objects to be cleaned are placed may need to be earthed.
  • the electrostatic charge can increase the germicidal effect of the disinfectant.
  • the coldness of the dry snow particles of -78 ° prevents a possible risk of explosion during the blasting process of blasting media such as ethanol with the appropriate dosage, since the cold cannot turn into a gaseous state during the blasting process.
  • the jet Due to the high flow speed, the jet achieves a strong impact force on surfaces or a strong penetration force on textiles and similar materials as well as on membranes.
  • This strong mechanical force together with the chemical force of the cleaning or disinfecting agent, has a strong cleaning effect with very good germ killing.
  • the blasting device provides, for example, a base platform as a base body or carrier, on which a tank for the liquid blasting agent is built.
  • a pressure-increasing station is also provided as a conveying or pump unit for the liquid blasting agent (cleaning and / or disinfecting agent), a control unit connected to the flow of the operating medium and supply hoses to a blasting gun with a nozzle unit and a convergent-divergent nozzle.
  • the supply hoses are advantageously designed as a hose in a hose system.
  • the supply hose for the liquid blasting agent is protected inside the supply hose for the gaseous operating medium.
  • the supply lines are routed separately at or in front of the blasting gun.
  • the internal supply hose is led to a metering valve of the blasting gun.
  • the flow of the gaseous operating medium is released, for example on the blasting gun, by means of a valve which is operated via an operating element (operating lever).
  • the resulting volume flow moves a flow obstacle (adjusting body) built into the supply line for the gaseous operating medium.
  • This movement actuates a switching device that starts the pressure-increasing station for the liquid abrasive. This is done, for example, by opening a compressed air line if the pressure boosting station is powered by compressed air.
  • a branch line can be routed as a compressed air line from the feed line for the gaseous operating medium to the pressure-increasing station.
  • a diaphragm pump operated with compressed air is preferably used as the pressure-increasing station.
  • a device for cleaning face masks or other textiles comprises a guide unit which has a container with a mesh on the underside in the center, the mesh allowing the jet to pass into an adjoining collecting container.
  • the collecting container has an opening on the underside for the connection of a drain line, the cross section of which is far larger than the cross section of the feed line for the operating medium.
  • the supplied operating medium including cleaning and / or disinfectant, is discharged through the drain line. After the transition to the collecting container, the pressure and the speed of the operating medium / abrasive are greatly relaxed.
  • a filter unit can be used to support the discharge. Separation of the liquid blasting agent is then also possible.
  • a displaceable closure cover rests on the guide unit, the length of which is at least twice as long as the length of the container.
  • On the cap at least one jet nozzle is attached.
  • the sealing lid covers the container in a sealing manner. With the displacement of the closure cover, the jet nozzle or the jet nozzles can then be guided longitudinally over the container, the latter constantly remaining tightly sealed by the closure cover.
  • the objects to be cleaned can be placed on the mesh on the underside of the cavity.
  • the items to be cleaned are placed in a mesh basket which is then placed on the mesh at the bottom of the cavity.
  • a housing can be arranged over the container, in which, for example, a linear drive moves at least one jet nozzle over the container as required.
  • the linear drive can also have a further axis of movement, which enables additional transverse movement if the container size requires this.
  • Cleaning agents in the context of the invention are liquids with a chemically active component that dissolves dirt.
  • grease-dissolving liquids in particular surfactants, are cleaning agents for the purposes of the invention.
  • Disinfectants in the context of the invention are liquids that kill bacteria, viruses, germs or other pathogens.
  • Show it: 1 shows a basic illustration of a first embodiment of a blasting device according to the invention for cleaning and / or disinfecting contaminated surfaces and / or objects in a first switching position
  • FIG. 2 shows the blasting device according to FIG. 1 in a second switching position
  • FIG. 3 shows a sectional view of a volume flow switch and a switching device of the blasting device according to FIGS. 1 and 2,
  • FIG. 4 shows a sectional view of an alternative embodiment of the volume flow switch and the switching device
  • FIG. 5 shows a basic illustration of a second embodiment of the blasting device according to the invention.
  • a blasting device for cleaning and / or disinfecting contaminated surfaces and / or objects using a gaseous operating medium and a cleaning and / or disinfecting agent supplied to the gaseous operating medium as blasting agent provides a tank 2 for the liquid cleaning and / or disinfectant, a pressure boosting station 3 for the liquid cleaning and / or disinfectant, a feed line 14 for the gaseous operating medium, a volume flow switch 13 arranged in the feed line 14, a connection block 9 with a first connection adapter 10 and with a the second connection adapter 11 assigned to the feed line 14, as well as a blasting gun 4 and two feed hoses 7, 8 guided from the connection block 9 to the blasting gun 4.
  • the gaseous operating medium supplied via the second connection adapter 11 is guided to the jet gun 4 via the first supply hose 7.
  • the second supply hose 8 is connected to the first connection adapter 10.
  • the connection block 9 also has a third connection adapter 12.
  • a fluid supplied via the third connection adapter 12 is mixed with the gaseous operating medium in the connection block 9 and conveyed to the jet gun 4 via the first supply hose 7.
  • the blasting device also provides a branch line 15 which is led from the feed line 14 for the gaseous operating medium to the pressure-increasing station 3.
  • a switching device 19 and a pressure booster 20 are provided in the branch line 15.
  • the switching device 19 interacts with the volume flow switch 15 in a manner to be considered in more detail. It is used to activate or deactivate the pressure increasing station 3.
  • the pressure booster 20 in the branch line 15 is used to increase the pressure of the gaseous operating medium provided in the branch line 15 and branched off from the supply line 14.
  • the pressure in the branch line 15, based on the direction of flow from the feed line 14 to the pressure increasing station 3 behind the pressure booster 20, is higher by a factor of 1.5 to 3 than before the pressure booster 20.
  • a first liquid line 22 is led from the pressure increasing station 3 to the third connection adapter 12 and a second liquid line 23 to the first connection adapter 10.
  • the first liquid line 22 is assigned a first switchover unit 24 and the second liquid line 23 is assigned a second switchover unit 25.
  • the first switchover unit 24 the first liquid line 22 can optionally be released or shut off. If the first liquid line 22 is released, the cleaning and / or disinfecting agent stored in the tank 2 and conveyed by the pressure increasing station 3 passes through the first liquid line 22 to the connection block 9 third connection adapter 12 arranged check valve 26 assigned.
  • the check valve 26 prevents the cleaning agent and / or disinfectant from flowing back in the direction of the pressure-increasing station 3 in the first liquid line 22.
  • the second switchover unit 25 is implemented in such a way that the first connection adapter 10 is connected either to the second liquid line 23 or to a carbon dioxide feed line 21.
  • either the liquid cleaning and / or disinfectant conveyed by means of the pressure increasing station 3 or the liquid carbon dioxide supplied via the carbon dioxide supply line 21 pass via the first connection adapter 10 into the second supply hose 8 and on to the blasting gun 4.
  • the first switchover unit 24 and the second switchover unit 25 are assigned a synchronization device (not shown).
  • the synchronization device synchronizes the switching states of the switching units 24, 25 so that in a first switching position of the blasting device (FIG. 1) the first liquid line 22 is blocked and no cleaning and / or disinfectant from the tank 2 reaches the connection block 9.
  • the cleaning and / or disinfectant is the only blasting agent fed via the first connection adapter 10 to the connection block 9 and continues via the second supply hose 8 to the blasting gun 4.
  • Liquid carbon dioxide is not additionally supplied in the first switch position, the carbon dioxide supply line 21 is not connected to the first connection adapter 10.
  • the first liquid line 22 is released and the pressure booster station 3 conveys the cleaning and / or disinfectant from the tank 2 to the third connection adapter 12 of the connection block 9 the first connection adapter 10 is connected.
  • the carbon dioxide supply line 21 is connected to the first connection adapter 10.
  • liquid carbon dioxide reaches the jet gun 4 via the second supply hose 8.
  • the cleaning agent and / or disinfectant is the only liquid blasting agent.
  • the cleaning and / or disinfecting agent on the one hand and the liquid carbon dioxide on the other hand serve as blasting media.
  • the blasting gun 4 provides a connection for the supply hoses 7, 8, a housing 27 with an operating lever as the operating element 28, and a nozzle unit 5 attached to the housing 27.
  • the nozzle unit 5 comprises a convergent divergent nozzle and a metering valve 6.
  • the pressure increasing station 3 is designed as a diaphragm pump.
  • the diaphragm pump 3 uses the gaseous operating medium, in particular compressed air, guided via the branch line 15, in order to convey the cleaning agent and / or disinfectant stored in the tank 2.
  • the pressure booster 20 is provided in order to ensure that the cleaning and / or disinfecting agent has a sufficient and, in particular, a higher pressure than the gaseous operating medium.
  • the pressure of the liquid cleaning and / or disinfecting agent essentially corresponds to the pressure of the gaseous operating medium downstream of the pressure booster.
  • the second supply hose 8 is guided in the first supply hose 7. It is a hose in a hose system in which the inner, second supply hose 8, in which the liquid cleaning and / or disinfectant or the liquid carbon dioxide is fed to the jet gun 4, is encased by the outer, first supply hose 7 and is protected.
  • the inner second supply hose 8 is guided out of the first supply hose 7 and reaches the nozzle unit 5 via the dosing valve 6.
  • the dosing valve 6 is used to adjust the volume flow. If the metering valve 6 is open to the maximum, the volume flow through the second supply hose 8 is maximum. If the metering valve 6 is completely closed, the second supply hose 8 is blocked.
  • the liquid blasting agent supplied via the inner second supply hose 8 is supplied to the gaseous operating medium.
  • the function of the volume flow switch 13 and the interaction of the volume flow switch 13 with the switching device 19 are explained in more detail below with reference to FIG. 3.
  • the volume flow switch 13 provides a housing 17, which is formed in particular by a jacket body 30 and two end closures 31 lying opposite one another.
  • Two feed line connections 32 for the feed line 14 are provided on the housing 17 in the region of the jacket body 30.
  • an adjustment body 16 is provided as a flow obstacle.
  • the gaseous operating medium conducted via the supply line 14 and the supply line connections 32 can flow around the adjusting body 16, which is mounted in the housing 17 at a distance from an inner wall of the casing body 30, whereby it flows through an annular gap 33 formed between the adjusting body 16 and the casing body 30 occurs.
  • the adjustment body 16 is now held in the housing 17 of the volume flow switch 13 so as to be longitudinally displaceable.
  • the adjusting body 16 is held on an actuating unit 18 which is guided in the housing 17 of the volume flow switch 13 so as to be longitudinally displaceable in the area of the front closures 31.
  • the actuation unit 18 serves, on the one hand, to actuate the switching device 19.
  • actuation unit 18 interacts with a return spring 29, which serves to bring the volume flow switch 13 into a defined off position designed as a preferred position.
  • the switching device 19 actuated via the actuating unit 18 of the volume flow switch 13 is implemented as a 3/2-way valve in the present exemplary embodiment of the invention.
  • the switching device 19 blocks the branch line 15 which flows from the feed line 14 for the gaseous operating medium to the pressure booster 20 and is further led to the pressure increasing station 3.
  • the switching device 19 is actuated and the branch line 15 is released.
  • the operating lever (operating element 28) on the blasting gun 4 is actuated.
  • a valve (not shown) is actuated so that the first supply hose 7 is released and the gaseous operating medium, which is guided via the first supply hose 7, exits.
  • the pressure in the first supply hose 7 drops.
  • a differential pressure arises in the volume flow switch 13 and the adjusting body 16 is displaced longitudinally.
  • the actuating unit 18 is displaced longitudinally and the switching device 19 is actuated or activated.
  • the pressure-increasing station 3 is switched via the switching device 19 and cleaning and / or disinfectant stored in the tank 2 is conveyed to the connection block 9.
  • the volume flow switch 13 By using the volume flow switch 13, the actuation of the operating lever 28 in the blasting gun 4 is detected remotely by the control and the pressure increasing station 3 is activated.
  • a signal line led to the blasting gun 4 and a signal transmitter in the blasting gun 4, for example a microswitch, can then be dispensed with.
  • the cleaning and / or disinfecting agent is conveyed as the only blasting agent via the first connection adapter 10 and the second supply hose 8 to the blasting gun 4.
  • the amount used can be adjusted via the metering valve 6.
  • liquid carbon dioxide and / or the liquid cleaning agent and / or disinfectant are used as the blasting agent.
  • the liquid cleaning and / or disinfectant flows in via the third connection adapter 12 and is mixed with the gaseous operating medium in the connection block 9, the liquid carbon dioxide is fed to the jet gun 4 via the first connection adapter 10 and the second supply hose 8.
  • the metering valve 6 is used to meter the amount of liquid carbon dioxide. Due to the temperature of the liquid carbon dioxide, it must be taken into account that only cold-stable cleaning agents and / or disinfectants, for example ethanol or isopropanol and mixtures thereof, can be used.
  • a surface or an object can be cleaned or disinfected or decontaminated either exclusively with the liquid cleaning and / or disinfectant or with the liquid cleaning and / or disinfectant and additionally with liquid carbon dioxide. Fail-safe operation and simple handling are guaranteed by the provision of the synchronization device and the two switchover units 24, 25. In addition, it must be taken into account that the blasting device can be operated in the first switch position without liquid carbon dioxide having to be made available. A provision of liquid carbon dioxide is only necessary if it is to be used regularly or in individual cases for cleaning.
  • Fig. 4 shows an alternative embodiment of the volume flow switch 13.
  • the adjusting body 16 is formed in the housing 17 of the volume flow switch 13 in the manner of a rocker arm.
  • the switching device 19 is activated via the actuating unit 18 connected to the rocker arm to switch the pressure increasing station 3.
  • a return spring 29 is also provided here.
  • the first switching state of the adjusting body 16 shown in FIG. 4 is designed as a preferred position. In the preferred position, the switching device 19 is not actuated or the pressure increasing station 3 is not active.
  • the blasting device dispenses with the possibility of using liquid carbon dioxide as the blasting agent.
  • the connection block 9 only provides the first connection adapter 10 and the second connection adapter 11.
  • the cleaning and / or disinfecting agent stored in the tank 2 is supplied as the only blasting agent via the first connection adapter 10.
  • the pressure-increasing station 3 is used for this purpose.
  • the gaseous operating medium supplied through the supply line 14 is made available via the second connection adapter 11.
  • the first connection adapter 10 is connected to the inner, second supply hose 8, while the gaseous operating medium reaches the blasting gun 4 via the second connection adapter 11 and the outer, first supply hose 7.
  • the further function of the blasting device corresponds to the function of the blasting device according to the first embodiment in the first switching state.
  • a control unit 34 comprises the volume flow switch 13 and the switching device 19 for the pressure increasing station 3.
  • the branch line 15 and the pressure booster 20 are not shown.
  • any other pumps can serve as a pressure-increasing station.
  • electric pumps can be used.
  • a switching device 19 is used here, which provides a preferably electrical operating signal for activating or deactivating the electric pump.

Landscapes

  • Mechanical Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Apparatus For Disinfection Or Sterilisation (AREA)
  • Nozzles (AREA)

Abstract

L'invention concerne un procédé de nettoyage et/ou de désinfection de surfaces et/ou d'objets contaminés au moyen d'un milieu de travail gazeux à une pression de fonctionnement d'au moins 0,50 bar à au maximum 12 bar et au moyen d'un agent de nettoyage et/ou de désinfection liquide acheminé comme agent abrasif jusqu'au milieu de travail gazeux, avant, dans ou après un point d'étranglement d'un ensemble buse (5), le milieu de travail gazeux et l'agent abrasif liquide étant projetés par une buse convergente-divergente de l'ensemble buse (5) sur une surface à nettoyer et/ou à désinfecter. L'invention concerne en outre un dispositif de projection pour nettoyer et/ou désinfecter des surfaces et/ou objets contaminés ainsi que l'utilisation du procédé et/ou du dispositif de projection pour le nettoyage et/ou la désinfection de contaminations nucléaires et/ou de vêtements de protection et/ou d'équipement de soins de santé et/ou d'échangeurs de chaleur.
EP21723119.0A 2020-03-27 2021-03-25 Procédé de nettoyage sans eau ou à volume d'eau fortement réduit et dispositif de projection à cet effet Pending EP4126451A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102020001960 2020-03-27
DE102020003968 2020-07-01
DE102020121234.8A DE102020121234A1 (de) 2020-03-27 2020-08-12 Verfahren zur wasserlosen beziehungsweise stark wasserreduzierten Reinigung sowie Strahlvorrichtung hierfür
PCT/DE2021/100298 WO2021190708A1 (fr) 2020-03-27 2021-03-25 Procédé de nettoyage sans eau ou à volume d'eau fortement réduit et dispositif de projection à cet effet

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EP4126451A1 true EP4126451A1 (fr) 2023-02-08

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EP21723119.0A Pending EP4126451A1 (fr) 2020-03-27 2021-03-25 Procédé de nettoyage sans eau ou à volume d'eau fortement réduit et dispositif de projection à cet effet

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EP (1) EP4126451A1 (fr)
DE (1) DE102020121234A1 (fr)
WO (1) WO2021190708A1 (fr)

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Publication number Priority date Publication date Assignee Title
CN114011805A (zh) * 2021-11-15 2022-02-08 上海德卫氪自动化工程有限公司 一种雪花清洗机及其清洗方法
CN114952627B (zh) * 2022-05-27 2023-06-30 黄河勘测规划设计研究院有限公司 一种雾化磨料射流系统

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Publication number Priority date Publication date Assignee Title
US2699403A (en) * 1952-05-24 1955-01-11 Emmett J Courts Means and methods for cleaning and polishing automobiles
US4817342A (en) * 1987-07-15 1989-04-04 Whitemetal Inc. Water/abrasive propulsion chamber
DE10233304B4 (de) * 2002-07-22 2005-11-10 Unique Cleaning Systems Gmbh Verfahren und Vorrichtung zum Entfernen von Dünnfilm- und Dünnschicht-Verschmutzungen auf festen Oberflächen
WO2006000274A1 (fr) * 2004-06-24 2006-01-05 Jens Werner Kipp Procede et dispositif d'alimentation en dioxyde de carbone liquide
EP1911465A1 (fr) * 2006-10-12 2008-04-16 Linde Aktiengesellschaft Procédé de la distribution d'un désinfectant
DE102015106914A1 (de) * 2014-11-18 2016-05-19 Jens-Werner Kipp Verfahren und Vorrichtung zur Reinigung von Rohren, Tanks und sonstigen Oberflächen von Teilen, mit Rückständen aus Fett, Oel und ähnlichen Stoffen

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DE102020121234A1 (de) 2021-09-30
WO2021190708A1 (fr) 2021-09-30

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