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WO2016193943A1 - Procédé et équipement de lavage - Google Patents

Procédé et équipement de lavage Download PDF

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Publication number
WO2016193943A1
WO2016193943A1 PCT/IB2016/053273 IB2016053273W WO2016193943A1 WO 2016193943 A1 WO2016193943 A1 WO 2016193943A1 IB 2016053273 W IB2016053273 W IB 2016053273W WO 2016193943 A1 WO2016193943 A1 WO 2016193943A1
Authority
WO
WIPO (PCT)
Prior art keywords
water
cages
ozone
components
rinse
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.)
Ceased
Application number
PCT/IB2016/053273
Other languages
English (en)
Inventor
Maurizio Cosolo
Matteo BORGHI
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.)
IWT Srl
Original Assignee
IWT Srl
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 IWT Srl filed Critical IWT Srl
Publication of WO2016193943A1 publication Critical patent/WO2016193943A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • A61L2/18—Liquid substances or solutions comprising solids or dissolved gases
    • A61L2/183—Ozone dissolved in a liquid
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K1/00—Housing animals; Equipment therefor
    • A01K1/02—Pigsties; Dog-kennels; Rabbit-hutches or the like
    • A01K1/03—Housing for domestic or laboratory animals
    • A01K1/031—Cages for laboratory animals; Cages for measuring metabolism of animals
    • 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
    • A61L2/24—Apparatus using programmed or automatic operation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/02—Cleaning by the force of jets or sprays
    • B08B3/022—Cleaning travelling work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/04—Cleaning involving contact with liquid
    • B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
    • B08B3/14—Removing waste, e.g. labels, from cleaning liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
    • B08B9/08—Cleaning containers, e.g. tanks
    • B08B9/0861—Cleaning crates, boxes or the like
    • 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
    • A61L2202/12—Apparatus for isolating biocidal substances from the environment
    • A61L2202/121—Sealings, e.g. doors, covers, valves, sluices
    • 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
    • A61L2202/12—Apparatus for isolating biocidal substances from the environment
    • A61L2202/122—Chambers for sterilisation
    • 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
    • A61L2202/13—Biocide decomposition means, e.g. catalysts, sorbents
    • 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
    • A61L2202/14—Means for controlling sterilisation processes, data processing, presentation and storage means, e.g. sensors, controllers, programs
    • 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
    • A61L2202/10—Apparatus features
    • A61L2202/17—Combination with washing or cleaning means
    • 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
    • A61L2202/23—Containers, e.g. vials, bottles, syringes, mail

Definitions

  • the present invention relates to a method and equipment for carrying out the method for washing cages and components thereof, adapted for the application in research centers in the life sciences or pharmaceutical preclinical research fields.
  • the formulation of detergents which may be acid or alkaline based, usually includes a very aggressive basic chemical component (such as phosphoric acid or citric acid for acid compounds or potassium hydroxide or sodium hydroxide for alkaline compounds).
  • a very aggressive basic chemical component such as phosphoric acid or citric acid for acid compounds or potassium hydroxide or sodium hydroxide for alkaline compounds.
  • the detergent is intended to facilitate the dissolution of dirt present on the objects to be washed (such as housing cages for research animals, lids, feed containment grids, etc.) to make the mechanical removal of the same easier by means of appropriate sprayer nozzles.
  • the detergent is also intended to remove the unpleasant smell of excrement and food that the animals leave in the cages.
  • the nozzles whose working pressures usually reach low values (1.5 - 2.5 bar max) are supplied by a centrifugal pump that withdraws the bath, previously prepared with the detergent, from the tank of the washing machine to spray it on the load.
  • the washing bath temperature also plays an important role in achieving an acceptable cleaning result.
  • the detergent alone would not be sufficient if the bath were not brought to a temperature such as to promote the softening of the dirt and the chemical action of the detergent. These temperatures can reach even high values depending on the washing cycle step.
  • a washing cycle in fact consists of several steps that are summarized hereinafter:
  • the energy is supplied to the washing bath by means of heat exchangers which are crossed by a primary fluid (usually vapor provided by the end user of the system) or alternatively by means of electric resistances.
  • washing machines that work with baths at a temperature higher than the ambient temperature also means generating heat dispersion in the washing area, thereby forcing the user to condition the environment. Therefore, the energy used for the washing steps must be added to the energy used to supply the conditioning systems.
  • Another aspect common to all known machines, working with hot baths, is the need to connect the washing chamber of the machine with the external environment by means of ducts and centrifugal fans that the end of the cycle aspire the vapors generated during the washing steps to facilitate opening the door of the chamber by the operator and prevent hazardous releases of hot fumes.
  • the detergents are based on aggressive chemicals, with a continuous use they deteriorate the machine parts in contact with the washing bath, particularly the seals of valves, pumps and pipes that are made of elastomers.
  • the neutralization is carried out by adding a chemical product to the water to be discharged with a pH value opposite to that of the washing bath, while cold water is added to the bath to reduce the temperature with automated control systems. All of this implies high operating and investment costs for the user.
  • an object of the present invention is to propose a method and equipment for carrying out the method for washing cages and components thereof, adapted for the application in research centers in the life sciences or pharmaceutical preclinical research fields, aimed at overcoming all the drawbacks mentioned above.
  • Cages refers herein in particular to plastic cages for housing research animals used in research centers in the life science or pharmaceutical preclinical research field.
  • the cages and the components thereof are usually of solid consistency, such as to prevent alterations in the washing process.
  • the cages generally include a base body, a cover and other internal components such as grids, feeders, etc.
  • the method subject of the invention essentially includes a wash step using a high-pressure jet of water at ambient temperature, followed by a rinse step with jet of water at ambient temperature mixed with ozone gas.
  • the object of the present invention is a method and equipment for carrying out the method for washing cages and components thereof, adapted for the application in research centers in the life sciences or pharmaceutical preclinical research fields.
  • a particular object of the present invention is a method for washing cages and/or components thereof, adapted for use in the life science or pharmaceutical preclinical research field, comprising in succession:
  • a further object of the present invention is an equipment for washing cages and/or components thereof, adapted for use in the life science or pharmaceutical preclinical research field, comprising:
  • a first wash module adapted to generate a high-pressure jet of wash water at ambient temperature directed towards said cages and/or components thereof, in order to remove dirt;
  • a second rinse module downstream of said first module, comprising a second system for generating a jet of rinse water at ambient temperature mixed with ozone gas, directed towards said cages and/or components thereof.
  • a particular object of the present invention is a method and equipment for carrying out the method for washing cages and components thereof, adapted for the application in research centers in the life sciences or pharmaceutical preclinical research fields, as better described in the claims that form an integral part of the present description.
  • figure 1 shows a functional block diagram of an exemplary embodiment of the equipment object of the invention
  • figure 2 shows an exemplary embodiment of the equipment including a wash module and a rinse module
  • figure 3 shows a section of the wash module highlighting the type of jet of the wash water
  • figures 4 and 5 show an exemplary embodiment of the cage handling system within the wash module, with and without cages, respectively;
  • figure 6 shows an exemplary embodiment of the cage retaining system within the wash module
  • figure 7 shows a block diagram of an exemplary embodiment of the system for generating and mixing the ozone to the rinse water
  • figure 8 shows two views of the part of the wash module filtration system which includes a conveyor belt of the dirt resulting from the washing of the cages.
  • the subject method of the invention essentially comprises a wash step using a high-pressure jet of water at ambient temperature, followed by a rinse step with jet of water at ambient temperature mixed with ozone gas.
  • the cages and the components thereof may also be generically referred to as objects hereinafter, for reasons of brevity.
  • the cleaning result is obtained in the washing step with high-pressure jets of water on the objects to be washed without any detergent and at room temperature.
  • the pressures involved are on average in the order of ten times the pressures normally involved on machines that use the known technique.
  • the high impact strength of the bath on the dirty surfaces is able to remove the solid parts without the use of detergents and of high temperature values.
  • the high pressure of the jet of water is not sufficient to complete the wash cycle: the necessary microbiological decontamination would not be guaranteed; visually, the object may look clean but the bacteria load is still present.
  • the goal of a complete wash cycle namely the mechanical removal of dirt and microbiological disinfection, is achieved by making the wash step be followed by a rinse step with a water and ozone gas solution.
  • Ozone due to its strong oxidizing power, is able to break large macromolecular components that are at the basis of the vital integrity of bacterial cells, fungi, protozoa, viruses and other contaminants.
  • ozone To make the ozone reach all the contaminated parts of the object to be washed, ozone itself is put into solution in clean water used for rinsing.
  • jets of water mixed with ozone at a proper concentration of the latter are to be directed on the objects to be rinsed.
  • Ozone also has the advantage of being able to neutralize unpleasant odors that would remain on the surfaces when using baths at ambient temperature without detergents.
  • the high pressure jet of wash water requires that the objects placed inside the washing chamber are suitably secured to prevent them from being moved or overturned due to the hydraulic thrust; in addition, the jet should encounter no obstacles in the path towards the objects to be washed.
  • the rinsing chamber where ozone is used is preferably of the sealed type.
  • the diagram shown in figure 1 is an example of washing machine according to the present invention.
  • the machine is of the "tunnel" type, consisting of a wash module and a rinse module, each with its own conveyor belt, upon which the objects to be washed are loaded and transported, and it comprises:
  • the wash module 2 comprises a bath collection tank 5, a high-pressure centrifugal pump 6 and a set of sprayer nozzles 7 of the wash water.
  • the wash module 2 further comprises a filtration system 8, adapted to prevent the solid parts of the dirt removed from the load from creating problems to the high-pressure centrifugal pump 6, which is provided with very small fluid passage channels, with respective small sprayer nozzles 7 for spraying water.
  • Pump 6 is high pressure since it allows determining the pressure values which, as mentioned above, are of the order of 10 times higher than the values normally used for washing machines in this field.
  • the pressure values range from 1.5 to 2.5 bar, while in the "high- pressure" pump described above, the pressure values can be of the order of 20-25 bar.
  • the high-pressure centrifugal pump 6 supplies the sprayer nozzles 7, placed on translating rods 9 and suitably sized to ensure the flow rate and the required pressure of the wash water (figure 3).
  • Rods 9 translate with a motion on a horizontal axis perpendicular to their own axis.
  • the stroke of the rods is obtained by means of a pneumatic cylinder 10.
  • the shape of the nozzles is such as to supply a flat cone jet of water 1 1.
  • Said measures ensure the coverage of the objects to be washed from the jets at each point of the surfaces affected by dirt.
  • the diagram in figure 3 shows a cross section of the conveyor belt 12 with cages 13 to be washed placed thereon, the geometry of jet 1 1 of the flat cone nozzles and the central position of the pneumatic cylinder 10 for the translation of rods 9.
  • the translating rods are placed below the support surface of the cages to be washed on the conveyor belt 12.
  • the latter is shaped as a set of parallel straps 14, placed at a certain mutual distance, which are connected to two rollers 15, 16 of which one is driving and the other is idle.
  • the position of the nozzles on the translating rods is established in such a way that the jet passes in the empty space between the straps and therefore is not interrupted by the presence of the straps themselves, and fully reaches the surface to be washed without deviations.
  • the sizing of the components of the conveying and washing system depends on the size of the cages to be washed.
  • Multiple parallel translating rods may be provided, imposing a longitudinal useful stroke on each of them which depends on the size of a row of cages to be washed.
  • the cages are placed on the conveyor belts in parallel rows.
  • the number of rods will be equal to the number of rows of cages which can be introduced together in the wash and rinse modules.
  • the filtration system 8 is of the self-cleaning and continuous operation type to cope also with extremely heavy load conditions. In fact, substantial amounts of litter impregnated with food and excrement, in particular stuck on the bottom, remain in the objects to be washed, such as cages for housing research animals, even after the emptying thereof, and this must be removed in the washing procedure.
  • the filtration system then preferably comprises a conveyor belt 17 (figures 1, 8) with very fine mesh, placed below the sprayer nozzles 7 and above the collection tank 5.
  • the belt lets the washing bath pass while retaining the solid parts removed from the cages by means of the jet of water.
  • the conveyor belt 17 is preferably made with a plastic fine mesh net, with mesh of for example 355 ⁇ .
  • the belt carries the dirty solid parts to an end where a scraping blade (scraper) 18 detaches them from the filtering surface and makes them fall into a collection vessel 22.
  • the larger solid parts also naturally fall by gravity into said collection vessel.
  • a further aspirating blade 19 is installed, being part of a fine aspiration system 20 and directly in contact with the conveyor belt 17, and connected to a high-head aspirator 21 (commercially defined as lateral channel blower or vacuum pump), which creates a vacuum on the surface of the belt.
  • the solid parts aspirated by means of the further aspirating blade 19 are deposited in a vacuum container 22', interposed through pipe 23 between the aspirating blade 19 and aspirator 21 and adapted to collect them and then be emptied.
  • the conveyor belt 17 is continuously cleaned and regenerated. Therefore, water falls into the collection tank 5 of the washing bath which cannot be defined as clean, even if it is only turbid and free of pollutants, and in any case not containing dirty solid parts. Consequently, the pumping and spraying system of the wash water is preserved from clogging problems.
  • a spillway 25 is also provided in the collection tank which leads to a discharge duct 26, in order to ensure the continuous change of water in the tank itself.
  • Figure 6 shows a system for locking cages 13 on the conveyor belt with respect to the wash module 2, to prevent the cages from moving under the strong thrust of the jet of water that flows from the sprayer nozzles fed by the high-pressure pump.
  • pneumatic cylinders 26 are activated on the stem of which a plate 27 is fixed for distributing the thrust on the surface of the cage, before the high-pressure pump 6 is activated.
  • the thrust of plates 27 is adapted to counterbalance the thrust of the wash water pressure.
  • One or more containers with large mesh grid surfaces may be used for washing the component parts of the cage, which are variable in shape and size, inside which said component parts are stably placed and secured.
  • the containers are transported in the same way as the cages through the wash and rinse system and held in place inside the wash module, in such a way that the jets of wash and rinse water can reach them completely.
  • the rinse module 3, downstream of the wash module 2, is used for the sanitization of objects by means of ozone.
  • the module is designed in the same way as the wash module: a centrifugal pump 30 continuously recirculates the rinse water between a collection tank 31 of the rinse water and sprayer nozzles 32.
  • An ejector 34 (figure 1) is provided between the delivery outlet of the rinse pump 30 and the sprayer nozzles 32 which is intended to mix the ozone gas coming from a dedicated ozone generator 35, of a per se known type, with the rinse water that is conveyed to the sprayer nozzles 32.
  • the ejector is a per se known component which serves precisely for mixing the ozone gas in the water.
  • the ejector must be suitably sized according to the flow rate and pressure values of the fluids involved (water and ozone).
  • the generator system is provided with an automatic system for determining the desired concentration of ozone.
  • An instrument indicating the ozone concentration in water is installed on the rinsing circuit downstream of the ejector. This also because ozone is an unstable gas with a short decay time, and therefore must be continually regenerated to allow maintaining the desired concentrations in water.
  • a variation to the hydraulic circuit for mixing ozone in water described above includes a recirculation system (figure 7) that works in two successive stages.
  • tank 36 of the closed type the capacity of which is such as to ensure at least the supply of rinse water consumed in one rinse cycle.
  • This tank is additional to that (31) described in the previous variant in Fig. 1.
  • a centrifugal pump 30' recirculates the water into tank 36, mixing it, by means of an ejector 37, with the ozone gas produced by a dedicated generator 38, up to obtaining a mixture of water and ozone into tank 36 at the desired concentration (e.g. 5.5-6 ppm).
  • the generation system is provided with an instrument 39 for the continuous measurement of the concentration of ozone in water which interacts with the ozone gas generator 38 by modulating the production thereof in order to keep the concentration of the mixture constant over time.
  • a control system of a possible excessive concentration of ozone may also be provided, with a degasser 40 which expels the excess ozone.
  • the centrifugal pump 30' which may be the same centrifugal pump used during the first step of preparation of the water and ozone mixture, collects the ozonated water from the additional tank 36 and conveys it to the sprayer nozzles 32 of the rinse module 3.
  • the water falling after the rinse operation still falls in the above collection tank 31, as described above.
  • Automatically controlled shut-off valves 42 controlled by a microprocessor control system of the machine, allow carrying out the recirculation of the water into the tank, in the step of preparation of the mixture, or feeding the sprayer nozzles.
  • the duration of the rinse step is such as to not adversely affect the decay time, and therefore to not perceptibly decrease the ozone concentration in water; said duration is for example equal to a time of about 180 seconds.
  • tank 36 is of the closed type, further promoting the retention of the ozone concentration.
  • a continuous supply of water is provided directly from the mains 24 into the additional tank 36, in order to ensure the proper supply of water into the tank itself, mainly after the emptying following the rinse step.
  • a static filter 43 is preferably provided, positioned on the collection tank 31 of the rinse water, mainly as a precaution in order to prevent the accidental fall of objects into the tank below.
  • centrifugal rinse pump (30, 30') in both variants described must be suitably sized according to the type and number of sprayer nozzles and so as to ensure a pressure value suitable for the proper operation of the ejector.
  • the pressure value provided by the rinse pump may be, for example, of about 3 bar. This value is not such as to require a system for locking the cages such as that of the wash step; the nozzles actually atomize the rinse water so as not to cause movements of the cages.
  • An extraction fan is installed on the rinse module whose delivery duct is combined with an active carbon catalytic filter.
  • the fan is activated to extract and abate the residual ozone gas that is released and saturates the chamber during the spraying of ozonated water on the load.
  • the wash and rinse modules are provided with hermetic doors 45 (Fig. 1) to prevent the escape of the ozone gas during the rinse step. The doors are closed during the respective steps and then opened to allow the movement of the cages to be washed.
  • the belts of the wash and rinse modules therefore work in a discontinuous manner, controlled by a microprocessor control system: the load to be washed is made to advance stepwise from one area to another and the residence time inside the various modules is determined to obtain the complete removal of dirt in the wash module and the reduction of the bacterial load with the ozone in the rinse module.
  • the hourly productivity of the desired washing procedure will be determined by the number of cages that can be deposited on the conveyor belt inside a module.
  • a typical wash step duration is 120 s, while a rinse duration is 180 s.

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  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Zoology (AREA)
  • Environmental Sciences (AREA)
  • Veterinary Medicine (AREA)
  • Public Health (AREA)
  • Epidemiology (AREA)
  • Animal Husbandry (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Clinical Laboratory Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cleaning By Liquid Or Steam (AREA)

Abstract

L'invention concerne un équipement pour laver des cages et/ou des composants de celles-ci, qui est conçu pour être utilisé dans le domaine des sciences biologiques ou de la recherche pharmaceutique préclinique, et comprend : un premier module de lavage (2), conçu pour générer un jet à haute pression d'eau de lavage à température ambiante dirigé vers lesdites cages et/ou des composants de celles-ci, afin d'éliminer la saleté ; un second module de rinçage (3) en aval dudit premier module, qui comprend un second système de génération d'un jet d'eau de rinçage à température ambiante mélangée à de l'ozone gazeux, dirigé vers lesdites cages et/ou des composants de celles-ci.
PCT/IB2016/053273 2015-06-05 2016-06-03 Procédé et équipement de lavage Ceased WO2016193943A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT102015000020815 2015-06-05
ITUB20151144 2015-06-05

Publications (1)

Publication Number Publication Date
WO2016193943A1 true WO2016193943A1 (fr) 2016-12-08

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2016/053273 Ceased WO2016193943A1 (fr) 2015-06-05 2016-06-03 Procédé et équipement de lavage

Country Status (1)

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WO (1) WO2016193943A1 (fr)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109107950A (zh) * 2018-07-30 2019-01-01 安徽通全孵化器管理有限公司 一种汽车零部件加工用清洗装置
CN109718388A (zh) * 2019-03-13 2019-05-07 于桂华 一种手术室用具清洗装置
EP3572097A1 (fr) * 2018-05-23 2019-11-27 IWT S.r.L. Appareil de lavage adapté pour une utilisation dans des centres de recherche pharmaceutique préclinique et / ou de production pharmaceutique, pour laver des pièces et des composants pour la production pharmaceutique, et procédé d'utilisation de l'appareil
CN110624883A (zh) * 2019-10-22 2019-12-31 山东新希望六和集团有限公司 一种毛鸡筐清洗消毒装置
IT201800010811A1 (it) * 2018-12-05 2020-06-05 Iwt Srl Sistema di trattamento del liquido di risulta del lavaggio, adattato per applicazione in macchina di lavaggio di tipo continuo Tunnel per il settore della Ricerca Preclinica Farmaceutica
IT201800010815A1 (it) * 2018-12-05 2020-06-05 Iwt Srl Vasca di contenimento liquido di lavaggio e/o risciacquo adattata per utilizzo in un sistema di lavaggio e/o risciacquo nel settore della Ricerca Preclinica Farmaceutica e della Produzione Farmaceutica
US20210009296A1 (en) * 2017-12-06 2021-01-14 Plastservice As Disinfection method for plastic devices
IT202000026485A1 (it) * 2020-11-06 2021-02-06 Glowapp S R L Sistema di sanificazione portatile ad ozono
CN113522839A (zh) * 2021-06-09 2021-10-22 刘朋洋 一种通用型医疗器材杀菌清洁设备
CN116138171A (zh) * 2023-04-20 2023-05-23 国营江苏省东海种猪场 一种种猪育种用清洗消毒装置及其使用方法
JP2024058084A (ja) * 2022-10-14 2024-04-25 三菱電機ビルソリューションズ株式会社 洗浄装置および洗浄方法

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US20070017548A1 (en) * 2005-07-18 2007-01-25 King Tobin R System and method for cleaning or sanitizing items intended for re-use
FR2989555A1 (fr) * 2012-04-20 2013-10-25 Alpha Tech Installation pour aseptiser l'enveloppe d'un produit alimentaire en pain
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Cited By (15)

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Publication number Priority date Publication date Assignee Title
US20210009296A1 (en) * 2017-12-06 2021-01-14 Plastservice As Disinfection method for plastic devices
EP3572097A1 (fr) * 2018-05-23 2019-11-27 IWT S.r.L. Appareil de lavage adapté pour une utilisation dans des centres de recherche pharmaceutique préclinique et / ou de production pharmaceutique, pour laver des pièces et des composants pour la production pharmaceutique, et procédé d'utilisation de l'appareil
CN109107950A (zh) * 2018-07-30 2019-01-01 安徽通全孵化器管理有限公司 一种汽车零部件加工用清洗装置
US11648592B2 (en) 2018-12-05 2023-05-16 Iwt S.R.L. System for treating wash waste liquid, adapted for application in a continuous tunnel washing machine in the field of preclinical pharmaceutical research
IT201800010811A1 (it) * 2018-12-05 2020-06-05 Iwt Srl Sistema di trattamento del liquido di risulta del lavaggio, adattato per applicazione in macchina di lavaggio di tipo continuo Tunnel per il settore della Ricerca Preclinica Farmaceutica
IT201800010815A1 (it) * 2018-12-05 2020-06-05 Iwt Srl Vasca di contenimento liquido di lavaggio e/o risciacquo adattata per utilizzo in un sistema di lavaggio e/o risciacquo nel settore della Ricerca Preclinica Farmaceutica e della Produzione Farmaceutica
EP3663009A1 (fr) * 2018-12-05 2020-06-10 IWT S.r.L. Système de traitement de liquide de rejet de lavage, adapté pour une application dans une machine à laver en tunnel en continu dans le domaine de la recherche pharmaceutique préclinique
US20200179991A1 (en) * 2018-12-05 2020-06-11 Iwt S.R.L. System for treating wash waste liquid, adapted for application in a continuous tunnel washing machine in the field of preclinical pharmaceutical research
CN109718388A (zh) * 2019-03-13 2019-05-07 于桂华 一种手术室用具清洗装置
CN110624883A (zh) * 2019-10-22 2019-12-31 山东新希望六和集团有限公司 一种毛鸡筐清洗消毒装置
IT202000026485A1 (it) * 2020-11-06 2021-02-06 Glowapp S R L Sistema di sanificazione portatile ad ozono
CN113522839A (zh) * 2021-06-09 2021-10-22 刘朋洋 一种通用型医疗器材杀菌清洁设备
JP2024058084A (ja) * 2022-10-14 2024-04-25 三菱電機ビルソリューションズ株式会社 洗浄装置および洗浄方法
CN116138171A (zh) * 2023-04-20 2023-05-23 国营江苏省东海种猪场 一种种猪育种用清洗消毒装置及其使用方法
CN116138171B (zh) * 2023-04-20 2023-07-04 国营江苏省东海种猪场 一种种猪育种用清洗消毒装置及其使用方法

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