WO1995023040A1 - Systeme permettant la reutilisation de conteneurs sous pression du type de boites pour aerosols - Google Patents

Systeme permettant la reutilisation de conteneurs sous pression du type de boites pour aerosols Download PDF

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Publication number
WO1995023040A1
WO1995023040A1 PCT/EP1995/000712 EP9500712W WO9523040A1 WO 1995023040 A1 WO1995023040 A1 WO 1995023040A1 EP 9500712 W EP9500712 W EP 9500712W WO 9523040 A1 WO9523040 A1 WO 9523040A1
Authority
WO
WIPO (PCT)
Prior art keywords
vacuum
pressure
low
boiler
valve unit
Prior art date
Application number
PCT/EP1995/000712
Other languages
German (de)
English (en)
Inventor
Michael Böcker
Theo Janscheid
Franz Josef Weber
Original Assignee
Boecker Michael
Theo Janscheid
Franz Josef Weber
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 Boecker Michael, Theo Janscheid, Franz Josef Weber filed Critical Boecker Michael
Publication of WO1995023040A1 publication Critical patent/WO1995023040A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67C—CLEANING, FILLING WITH LIQUIDS OR SEMILIQUIDS, OR EMPTYING, OF BOTTLES, JARS, CANS, CASKS, BARRELS, OR SIMILAR CONTAINERS, NOT OTHERWISE PROVIDED FOR; FUNNELS
    • B67C9/00—Devices for emptying bottles, not otherwise provided for
    • 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
    • B08B9/20—Cleaning containers, e.g. tanks by using apparatus into or on to which containers, e.g. bottles, jars, cans are brought
    • B08B9/28—Cleaning containers, e.g. tanks by using apparatus into or on to which containers, e.g. bottles, jars, cans are brought the apparatus cleaning by splash, spray, or jet application, with or without soaking
    • B08B9/30—Cleaning containers, e.g. tanks by using apparatus into or on to which containers, e.g. bottles, jars, cans are brought the apparatus cleaning by splash, spray, or jet application, with or without soaking and having conveyors
    • B08B9/32—Rotating conveyors

Definitions

  • the invention relates to a system for enabling multiple use of spray can-like pressure containers.
  • DE 42 04 836 A1 discloses a device of the type mentioned at the outset, in which spray cans, that is to say single-use “pressure vessels”, are introduced into a zone in which there is a pressure below the ambient pressure. The spray cans are cut open from the bottom and then rinsed and disposed of. With the known device, packaging scrap and residual ingredients are recovered; the actually usable package is destroyed.
  • a further disadvantage of this known device is that the head of the spray can or the pressure vessel, which often contains materials other than metals, still has to be separated from the pressure vessel and therefore requires an additional operation.
  • the pressure vessel is irretrievably lost and cannot be refilled.
  • the object is to provide a system for enabling multiple use of spray can-like pressure containers, in which pressure containers known per se are brought into a refillable state without destroying the entire container, it also being possible should reliably remove the contents of the pressure vessel and, if appropriate, reuse them.
  • pressure vessels are equipped with a removable, preferably pull-out, valve unit arranged on one of the base sides, these pressure vessels of different filling levels in one of several vacuum locks in a lid of a closed vacuum vessel, in which a Negative pressure is maintained, are introduced, the negative pressure lock can be released towards the inside of the boiler and the pressure container held therein can be opened, the contents of the pressure container can be emptied into the negative pressure boiler, and in which the pressure container can be washed out and, after washing, the empty and cleaned pressure vessels can be discharged from the vacuum zone, the lid of the vacuum vessel being designed to be tight and intermittent and carrying at least two vacuum locks, the vessel coinciding with the possible angular positions of the vacuum A lock station, an opening station, a cleaning station and a discharge station are provided, and the pressure containers with the removable valve unit are inserted overhead into the vacuum lock and can be opened there by removing (pulling out) the valve unit in the opening station.
  • the invention accordingly enables a reusable principle with a special logistics variant.
  • the reusable system required for returning spray cans or pressure containers can be carried out, for example, in the form of a network of depots.
  • the packaging or transport packaging for full and empty spray cans can also be offered in the depots.
  • the depot system is implemented by a nationwide depot network, which enables the reusable packaging to be made available for various contents, in particular polyurethane (PU). After they have been used, the reusable packs for PU are picked up at the point of empties and returned to the next possible depot.
  • PU polyurethane
  • the basis of the reusable system is a specially designed spray can-like pressure container.
  • An adapter device can be arranged in this, in which the valve unit is held with a clamping device.
  • the valve unit is at least partially surrounded by a circumferential groove.
  • This groove has two functions: on the one hand it can accommodate a sealing element which ensures that the valve unit is sealed off from the adapter device. On the other hand, the groove enables and facilitates the extraction process when the pressure vessel is opened.
  • the valve unit can be detached by inserting a gripping chuck which deforms the valve unit and pulls it out of the adapter device by pulling it back.
  • An adjustable scraper strips the deformed valve unit from the gripping chuck.
  • ORIGINAL DOCUMENTS holds a screw fastened valve mechanically, for example by a jaw gripper.
  • the valve is separated from the base body, for example by rotary and / or translational movement, depending on the fastening mechanism.
  • the pressure container e.g. serve a multi-function gripper head, which is part of a handling machine.
  • the liquid, pasty or solid contents of the pressure vessel are sucked or pressed into the interior of the hermetically sealed vessel by the pressure difference.
  • a solvent is used to clean the pressure vessel open at its head end, which is sprayed onto the inner wall of the pressure vessel, for example with the aid of a flushing probe or lance. These are solvents that can be circulated and can be used several times after cleaning.
  • the residues can in many cases be worked up or reused, i.e. serve for the new filling of pressure vessels, for example with the addition of virgin material.
  • the gases are in a gas separator, e.g. separated in a gas dome and withdrawn into different gas containers.
  • a gas separator e.g. separated in a gas dome and withdrawn into different gas containers.
  • An essential aspect of the invention is that the focus is on faster and synchronized cycle work when cleaning and reusing the pressure vessels. Attaching and clamping the pressure vessel above the vacuum zone,
  • the system preferably has a hermetically sealed boiler or converter, the upper part of which consists of a cover with the vacuum locks and an intermediate plate, the cover being rotatably arranged above the intermediate plate.
  • the intermediate washer is provided with a plurality of openings, which are possible with ! -> Angular positions of the vacuum locks coincide in their working positions and allow access to the vacuum locks.
  • the intermediate disk which can also be addressed as an inner cover, thus has at least two openings which are accessible from the boiler 0 selseite ago and are covered successively during the rotation of the lid.
  • the boiler wall is penetrated by a height-adjustable, flie ⁇ quietly mounted shaft, which carries the gripper chuck for ab asde valve unit 5 at its free end.
  • the shaft is carried at least on one side.
  • the filling valves which have been removed and falling from the gripping chuck will have to be discharged from the vacuum boiler via a pipeline.
  • the cleaning station can be connected to a separate vacuum unit, which allows the contents of the pressure container to be sucked off independently of the pressure inside the boiler. Furthermore, it is proposed to arrange a height-adjustable flushing lance in one of the workstations, which can penetrate into the exposed opening of the pressure vessel.
  • the pressure containers intended for disposal are preferably clamped in universal automatic clamping jaws which are present in the vacuum locks in the lid. It is also possible to provide the openings with suitable seats and seals which ensure the required tightness between the pressure container and the cover. It should also be noted that the vacuum inside the boiler promotes tightness through its suction effect.
  • the shaft or the flushing lance is arranged to be vertically movable by means of corresponding hydraulic and pneumatic adjustment devices.
  • the pressure vessel can be held in the vacuum lock by means of fluidically driven clamping jaws. It is advantageous if the vacuum lock is designed in such a way that the pressure vessel can be pushed in over part of its length, the head part of the pressure vessel coming to rest in the interior of the vacuum vessel.
  • Another aspect of the invention is to separate the basic substances (in particular solvents in PU) obtained during the opening and rinsing process.
  • the abbreviation "PU" means the material polyurethane.
  • the vacuum vessel is connected to a collecting container which contains an ultrasound unit. By continuing to use ultrasound in the range between 40 kHz to 3 MHz, the individual basic substances of the mixture of cleaning solvent and PU are separated and completely separated.
  • ORIGINAL DOCUMENTS 1 shows a schematic representation of a processing device for partially filled pressure vessels
  • Fig. 2 shows the device of FIG. 1 seen from above, also in a schematic representation.
  • pressure vessels are selected which contain one-component polyurethane foams and a propellant.
  • the application of the invention is not limited to such pressure vessels and additives.
  • the pressure vessels 1 selected as the exemplary embodiment are provided with an adapter device 51 on their head, as shown in FIG. 3.
  • the adapter device has a circumferential mounting element 60. This is essentially wedge-shaped.
  • a circumferential seal 58 is arranged in an annular recess. This can have an annular or elliptical cross section, for example.
  • a valve unit 52 is arranged in the adapter device 51.
  • the valve unit 52 consists of an outer
  • the valve housing 57 has a substantially cup-shaped shape.
  • the part of the valve housing facing the pressure vessel 1 is cylindrical.
  • a funnel-shaped part adjoins the cylindrical part.
  • the valve housing is preferably approximately half-cylindrical and the other half funnel-shaped.
  • the adapter device 51 has an adapter recess 61. It is designed to be compatible with the outer shape of the valve housing 57. It is essential that the valve housing 57 is held by a clamping device 53 which surrounds the adapter recess 61 all around. It is also essential that the valve housing 57 has an annular groove 54 into which a seal 59 is inserted.
  • an insert stamp 62 is used. This has a recess 63. When inserted, the insert punch 62 moves into the valve unit 52 to such an extent that it abuts the valve base 64 of the valve housing 57.
  • the actual valve 56 in particular its actuating elements, is located in the interior of the recess 63 of the insert die 62.
  • the diameter D1 of the valve housing 57 is larger than the diameter D2 of the opening which is left free by the annular groove 54. If the valve unit 52 is pressed in, the valve housing 57 fits adaptively into the recess 63. The upper ring of the valve housing 57, which has the diameter D1, engages behind the clamping device 53 after insertion. The circumferential pressing nose of the clamping device 53 ensures that the valve housing 57 is firmly in the adapter.
  • the pressure vessel 1 can then be filled in a known manner.
  • the completely or partially sprayed empty, i.e. "Used" pressure vessels 1 are checked and sorted by means of a sorting device with the aid of a digital identifier, it being possible to determine by measuring physical parameters whether they are cans with a predominantly liquid, pasty one or fixed content. Accordingly, a suitable solvent can be supplied to the vacuum kettle.
  • the presorted pressure vessels are delivered to a conveyor belt 4 and transported to a device according to the invention with a vacuum boiler 5.
  • the vacuum boiler 5 consists of a funnel-shaped, hermetically sealable jacket 6, an intermediate disc 7 and an outer, rotatable cover 8, the axis of rotation 12 of which coincides with a vertical axis 13 of the jacket 6.
  • the upper part of the jacket 6 ends with a circular running rail 10, in which rollers 11 run.
  • rollers 11 are attached to the side of the cover 8 and support it.
  • the lid is driven in rotation with the aid of a rotary drive, not shown, arranged above it.
  • a vacuum pump 24 is connected to the vacuum boiler 5, with which a vacuum can be generated and maintained in the interior of the vacuum boiler.
  • vacuum boiler 5 is also a
  • Collection container 33 connected.
  • An ultrasound device 36 is integrated in the collecting container 33.
  • the collecting container 33 is closed with a suction bell 37. At its bottom there is a valve 38 which is connected to a discharge screw 39 via a line.
  • the cover 8 has six vacuum locks 14, 14 with openings and sealing pads 16, 16 ', which are arranged peripherally at equal intervals on a circular line 15.
  • two openings 9, 9 ' are arranged in the intermediate disk 7, at the same distance as the vacuum locks 14', so that the openings 14 of the cover are covered during rotation of the cover and when the cover is reached intermittently
  • Two vacuum locks 14, 14 ' coincide with each other via two openings 9, 9'.
  • a flushing probe 17 is arranged coaxially below the one opening 9 and is pneumatically adjustable in height by means of a piston-cylinder arrangement 18.
  • the other opening 9 ' represents a three-way discharge station 19 for removing and removing the valve unit 52 on the pressure vessels. Here, the ingredients are sucked off and recovered.
  • the incoming pressure vessels 1 are inserted into the vacuum lock 14 'overhead in the cycle T1, wherein they are held by universal clamping jaws (not shown) and pressed onto the cover in the sealing pad 16'.
  • the inner shape of the sealing pad 16 adapts to the outer shape of the pressure vessel head 28. Sufficient space is left so that in the cycle area T2, i.e. at the next opening 9 of the intermediate disk 7, a height-adjustable shaft 20 with a gripping chuck 20 'grips the valve unit 52 to remove it from the adapter.
  • the removal process of the valve unit 52 from the adapter device 51 is shown schematically in FIG. 5.
  • the height-adjustable shaft 20 is longitudinally grooved. This ensures very precise adjustment of the shaft 20.
  • a scraper 55 is adjustably arranged in these grooves. Of course, it is also possible to move only the scraper and only the shaft longitudinal groove in a guided manner.
  • the gripping chuck 20 When shutting down the height-adjustable shaft 20, the gripping chuck 20 pushes' in the valve housing 57 and pushes it in the direction of the container interior of Druck ⁇ housing 1.
  • the gripping chuck 20 is formed for this purpose specifically aus ⁇ . It is provided with a recess 63 'which is so large that it can accommodate the valve 56 without moving.
  • a circumferential recess as a keyway 65 is arranged approximately at the inner end of the recess 63 '.
  • the gripping chuck 20 has a press cylinder 66.
  • the outer diameter of the press cylinder is dimensioned such that it can be guided past the wall of the annular groove 54 pointing towards the inside of the valve housing.
  • the diameter of the gripping chuck 20 ' is D3 minus the wall thickness of the valve housing 57. If the gripping chuck 20' designed in this way moves into the valve housing 57, the funnel-shaped part of the valve housing on the cylinder-shaped part of the valve housing 57 when pressed further towards the inside Pushed in the wall of the adapter device. Here, the annular border 67 of the valve housing 57 is pressed into the keyway 65. When the valve housing is shut down, it is pulled out of the adapter device 51. Then, by pushing the scraper 55 forward, the
  • valve housing 57 formed valve housing 57 and thus the entire valve unit pushed off.
  • the adapter device 52 and the valve housing 57 are made of metal, plastic or the like.
  • Stiffness, elasticity and the like of the material can be adapted to the corresponding requirements in a known manner.
  • the valve unit is thrown into a container 22 via a transfer tube 21, and the line 21 can be opened and closed synchronously with the movement of the cover.
  • the pressure component 1 which is usually under pressure, is explosively pressed into the vacuum vessel 5.
  • the negative pressure prevailing in the negative pressure vessel itself supports this emptying, it being possible to assume that the gases, liquids and part of the pasty solids in the pressure container 1 are thrown out.
  • the pressure vessel 1 Since the pressure vessel is usually not completely emptied, a rinse cycle is still required.
  • the pressure vessel 1 is displaced by the same angular distance over the opening 9 of the intermediate disk 7 in the cycle T3.
  • the pressure vessel 1 In the vacuum lock 14 shown in FIG. 1, the pressure vessel 1 is held in an analogous manner in the sealing pad 16.
  • the rinsing probe 17 moves into the interior of the open pressure container and sprays the inner wall thereof with solvent.
  • the solvent is moved from a container 25 through a flexible tube (26).
  • the detergent along with the remaining content runs down the vacuum tank wall and can be separated again.
  • a protective gas can be supplied via a spray head 30, which is located below the cover.
  • the height-adjustable shaft and / or flushing lance can be moved by a fluidically driven piston-cylinder arrangement.
  • the vacuum locks can be designed as closed containers or simply as seats for the pressure containers, which are only incorporated into the cover 8. Both embodiments are to be understood under the word "vacuum locks”.
  • the solvent content mixture can be removed via a controlled valve 34 in the lower part of the vacuum vessel.
  • a targeted treatment of the solvent / PUR mixture specifically addresses the solvent and leads to faster evaporation.
  • the suction bell 37 arranged above the collecting container 33 which is also made from a filling funnel, ensures that the solvent gases are drawn off into a downstream separator (for reuse), which is designed in a known manner.
  • the outgassing is achieved by a low energy supply (approx. 1,400 watts). Part of the solvent is thus recovered.
  • a much smaller part of the solvent must remain in the PUR mixture so that curing of the material is avoided and the transmission of the ultrasonic waves is ensured. This portion is fed into the collecting container 39 via the valve 38.
  • the treatment process described is continued to such an extent that cell disruption is achieved by cavitation by the action of the ultrasound waves with a specific power and frequency.
  • a further application of ultrasound is achieved in the cleaned pressure vessels 1.
  • the pressure vessels are passed through a quality control 40 (vision system) and checked from the inside.
  • the pressure vessels (cf. FIG. 1) are guided via a buffer section 41 into a turntable 8 'which corresponds to the turntable 8 already described, but which is arranged in a solvent bath 43 below the surface.
  • the turntable 8 ' is used for the cyclical processing of the pressure containers 1.
  • the ultrasound is also generated here by an ultrasound device, which are designed as sensors 42.
  • the sonors 42 for delivering the ultrasonic waves are attached to a rinsing probe 17 '.
  • the flushing probe 17 In terms of structure and function, the flushing probe 17 'corresponds to the flushing probe 17 already described. This flushing probe 17 moves into the pressure vessel 1. Ultrasonic cleaning of the corners begins. The particular advantage of this form of cleaning consists in a low environmental impact, which is characterized by achieving a high level of efficiency with a comparable low energy input.
  • the solvent bath is supplied by a
  • Boiler 43 ' which corresponds in shape and form to that of the pressure vessel.
  • the vessel 43 ' is also provided with a valve 47.
  • valve 47 When valve 47 is opened, the new solvent obtained can be passed into a collecting container 47 in a mixture of the residual PU solvent.
  • the mixture can either be bunkered in this collecting container, or it can also be fed directly to the collecting container 33 via a line 46.
  • this newly occurring mixture can either be separated separately in the manner described. However, it is also possible to separate the newly obtained mixture together with the resulting mixture which is contained in the vacuum container 5.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Cleaning In General (AREA)
  • Vacuum Packaging (AREA)

Abstract

Un système permet de réutiliser des récipients sous pression du type de boîtes pour aérosols. Les récipients sous pression (1) sont pourvus d'un de leurs côtés de base d'une unité de soupape amovible de préférence par extraction. Les récipients sous pression (1) remplis à des degrés divers sont introduits dans un sas à vide parmi une pluralité de sas à vide (14, 14') faisant partie du couvercle (8) d'au moins une chaudière à vide fermée dans laquelle un vide est maintenu. Les sas à vide (14, 14') peuvent s'ouvrir vers l'intérieur de la chaudière et les récipients sous pression (1) qu'ils contiennent sont ouverts. Les substances contenues dans les récipients sous pression (1) se vident dans la chaudière à vide (5). La chaudière à vide (5) est pourvue d'un couvercle (8) hermétique rotatif par intermittence qui porte au moins deux sas à vide (14, 14'). Une station d'introduction, une station d'ouverture, une station de nettoyage (17) et une station de décharge (19') sont montées dans la chaudière à vide dans des positions qui coïncident avec les positions angulaires possibles des sas à vide (14, 14'). Les récipients sous pression à unité de soupape amovible sont insérés dans les sas à vide la tête en bas et ouverts dans la station d'ouverture par enlèvement (extraction) de l'unité de soupape. Les récipients sous pression (1) nettoyés sont soumis à un contrôle de qualité (14), puis sont transportés le long d'une section intermédiaire (41) jusqu'à un autre couvercle (8) rotatif par intermittence. L'autre couvercle (8') est monté au-dessus d'un bain de solvant (43). Une autre station de nettoyage (17', 42) se situe au-dessous de l'autre couvercle (8'). Le chaudière à vide (5) et le bain de solvant (43) sont en communication avec un récipient collecteur (33) dans lequel est monté un dispositif aux ultrasons (36).
PCT/EP1995/000712 1994-02-25 1995-02-27 Systeme permettant la reutilisation de conteneurs sous pression du type de boites pour aerosols WO1995023040A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19944406137 DE4406137C2 (de) 1994-02-25 1994-02-25 Vorrichtung zur Ermöglichung der Mehrfachverwendung von spraydosenartigen Druckbehältern
DEP4406137.4 1994-02-25

Publications (1)

Publication Number Publication Date
WO1995023040A1 true WO1995023040A1 (fr) 1995-08-31

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ID=6511193

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1995/000712 WO1995023040A1 (fr) 1994-02-25 1995-02-27 Systeme permettant la reutilisation de conteneurs sous pression du type de boites pour aerosols

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DE (1) DE4406137C2 (fr)
WO (1) WO1995023040A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19932519C5 (de) * 1999-07-12 2009-07-09 Hasenpusch, Siegfried Vorrichtung zum Entleeren von Spraydosen

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991006479A1 (fr) * 1989-10-30 1991-05-16 Depressurized Technologies International, Incorporated Appareil et procedes de recyclage de recipients aerosols
DE4204836A1 (de) * 1992-02-18 1993-08-19 Franz Josef Weber Verfahren und vorrichtung zur aufbereitung und entsorgung von spraydosen verschiedener fuellungsgrade

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE717029A (fr) * 1968-06-24 1968-12-24 Berger L.J. & Renson Reunis Sprl Installation de transport d'échantillons de matière

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991006479A1 (fr) * 1989-10-30 1991-05-16 Depressurized Technologies International, Incorporated Appareil et procedes de recyclage de recipients aerosols
DE4204836A1 (de) * 1992-02-18 1993-08-19 Franz Josef Weber Verfahren und vorrichtung zur aufbereitung und entsorgung von spraydosen verschiedener fuellungsgrade

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Publication number Publication date
DE4406137A1 (de) 1995-09-07
DE4406137C2 (de) 1996-06-13

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