EP1890940B1 - Procede et dispositif pour vider avec de faibles emissions des substances contenues dans des grands sacs - Google Patents

Procede et dispositif pour vider avec de faibles emissions des substances contenues dans des grands sacs Download PDF

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Publication number
EP1890940B1
EP1890940B1 EP06724717A EP06724717A EP1890940B1 EP 1890940 B1 EP1890940 B1 EP 1890940B1 EP 06724717 A EP06724717 A EP 06724717A EP 06724717 A EP06724717 A EP 06724717A EP 1890940 B1 EP1890940 B1 EP 1890940B1
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EP
European Patent Office
Prior art keywords
docking
docking element
connecting piece
sealing device
bag
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.)
Not-in-force
Application number
EP06724717A
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German (de)
English (en)
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EP1890940A1 (fr
Inventor
Markus Hadley
Ulrich Gieg
Fritz Schaub
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.)
Novindustra AG
Bayer AG
Original Assignee
Novindustra AG
Bayer Technology Services GmbH
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Publication date
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Publication of EP1890940A1 publication Critical patent/EP1890940A1/fr
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Publication of EP1890940B1 publication Critical patent/EP1890940B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B69/00—Unpacking of articles or materials, not otherwise provided for
    • B65B69/0075—Emptying systems for flexible intermediate bulk containers [FIBC]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B69/00—Unpacking of articles or materials, not otherwise provided for
    • B65B69/0075—Emptying systems for flexible intermediate bulk containers [FIBC]
    • B65B69/0083—Emptying systems for flexible intermediate bulk containers [FIBC] using frames whereby the container is only suspended

Definitions

  • the invention relates to a method and a device for low-emission emptying of ingredients from large soft packaging.
  • FIBC Flexible Intermediate Bulk Container
  • Big-Bag Flexible Intermediate Bulk Container
  • FIBC Flexible Intermediate Bulk Container
  • Big-Bag Large-Bag
  • These big bags typically consist of an outer bag which provides mechanical protection and mechanical stability, and is preferably cut so that the filled container assumes approximately parallelepiped shape to allow good space utilization during transport and storage.
  • such a big bag comprises an inner foil bag, which ensures a tight packaging.
  • the material for the inner bag can be adapted to the male to be transported in its properties.
  • the inner bag is to prevent transporting material passes through the bag to the outside, but also protect the cargo from environmental influences, in particular moisture.
  • the dimensions of the big bags are matched to typical industrial pallet dimensions or the dimensions of europallets.
  • filled big bags can be stored on such pallets and transported and loaded with conventional handling equipment such as forklifts.
  • the take-up volume of such big bags may well be of the order of 1 to 2 m 3 .
  • Typical Big-Bags have a tightly welded outlet hose at one end. This end forms the lower end afterwards. Above the lower end of the big bag is usually tied to allow later after cutting off the welding a controlled emptying of the big-bag. At the other end, which later forms the upper end, is the Big-bag usually open. Typically, the big-bag is inflated with air or a gas prior to filling to approximate its final shape and then filled with special filling equipment. After filling, the big bag is tied off at the top and is thus closed.
  • big bags still have loops at the top, into which either forklift tines can be inserted directly or with which big bags can be hung in racks for emptying or trusses, with which such big bags can be handled, for example with overhead cranes.
  • big bags The main advantage of big bags is the low weight in addition to the low space requirement for holding not yet filled big bags and also a low capital requirement, since typical big bags made of materials such as polyester, polypropylene or polyethylene.
  • big bags can serve as disposable containers cost-effectively. This can be advantageous if either extensive transport distances are covered, which make a return of the means of transport very expensive or particularly toxic, reactive or otherwise difficult to handle products should be operated for reusable containers a large cleaning effort, including environmentally sound disposal of cleaning residues. Big bags in which the critical products were transported can generally be easily disposed of in hazardous waste incineration plants.
  • a silo container in which a film inner bag is provided in the solid silo container.
  • a container should be suitable in particular for the transport of melamine powder.
  • a special discharge funnel is proposed and a very specific inclination of the silo container for unloading.
  • the discharge of the melamine powder is carried out by supplying compressed air and discharge via a cellular wheel.
  • Coupling devices which allow docking of a transport container to an unloading station, so that a tight connection between the transport container and the unloading station can be produced.
  • the devices comprise a container-side part and a discharge station-side part. Each of these parts enables a tight closure of the transport container or the unloading station from the environment.
  • the closure is produced by means of swiveling flaps in corresponding pipe connections.
  • the device for this purpose, it is proposed to design the device in such a way that after docking, the flaps of container-side and unloading-station-side docking elements lie on top of each other so that no dead space is created between them or if this dead space is sealed in such a way that no product can settle in such a dead space.
  • the proposed construction ensures that after closing the connection and the separation of transport container and removal station no or only to a very limited extent contaminated with the cargo surfaces of the environment are accessible. To further reduce such potential contaminants is also proposed to flush the flap area after closing the flaps.
  • a similar device is also from the DE 196 15 646 A1 known.
  • the peculiarity of the arrangement proposed there is the fact that the two flaps of the docking elements are inclined relative to its axis of rotation, so that both axes coincide in the docked state and therefore results in a particularly simple kinematics when opening the flaps.
  • the arrangement avoids dead space between the flaps where the product could settle.
  • this design allows edgeless edge design, allowing exposure of contaminated surfaces after the separation of the docking elements to the ambient air is structurally practically excluded.
  • a funnel-shaped outlet section terminating in an opening is provided, wherein in the outlet section a conical valve body is provided, wherein the valve body is shaped so that the tip of the cone projects into the useful space of the transport silo and the valve body with its edge seals against the edge of the outlet opening.
  • the valve body is hollow, so that a correspondingly shaped counterpart of the docking station of the removal device can engage in the valve body.
  • the actuating element for the valve body is provided with a correspondingly shaped cone and sealing means are provided which allow a coupling of the actuating element and the valve body.
  • the cone body of the docking station in turn seals with its outer edge a corresponding inlet opening in the removal station.
  • the two conical body With their seal to each other so that the remaining between them gap-shaped dead space is reliably sealed against the environment.
  • this operation can be performed, for example, with pulsating compressed air, so that the valve body always shake freely an annular passage and so obstruction by bridge formation of the powder can be avoided. If the conical actuating body of the removal device is lowered back into its starting position, this closes both the inlet opening in the removal device and the outlet opening of the transport container. Thus, all contaminated with the product flow surfaces are again within the sealed areas of transport container and removal station. Once the transport container has been uncoupled from the removal station, practically none remains Exposure of contaminated with the product outer surfaces of both elements of the coupling device with respect to the ambient air.
  • a device for docking a container to a discharge hopper in the pharmaceutical industry is known, with the particular entry of germs from the outside of the transport container is to be prevented in the processing plant.
  • a protective cover is proposed for the emptying funnel, which covers the emptying funnel.
  • the docking process takes place. Although it may possibly be reduced by the proposed device, the entry of germs in the handled product stream, but the device offers no protection against the fact that after emptying outside adhering to the closure members of transport containers and feed hopper product residues can get into the environment.
  • the proposed sleeve should be characterized in that it comprises two relatively fixed parts for connection to each of the transport container and the emptying hopper and therebetween a flexible portion, so that a possible compensation of movement takes place within the sleeve and a relative movement between the sleeve and in particular transport container is avoided , This is intended to prevent germs adhering to the underside of the transport container from being scraped off during docking and to get into the product flow.
  • the proposed device will also prevent leakage of product stream into the environment when docked, but provides no protection against exposure of contaminated parts of the container and the discharge hopper to each other after separation from the ambient air and, consequently, product residues may enter the environment.
  • the Big-Bags is first connected in a manner not described in detail sealed with a hopper.
  • the inner bag is first inflated with a filling gas, such as air or an inert gas, so that it assumes its final shape substantially.
  • a filling gas such as air or an inert gas
  • the contents are passed into the container in a known manner. So that no unacceptable overpressure arises in the container, the gas used for inflation must escape from the container through the filling opening in countercurrent to the filling material.
  • the exiting filling gas will carry particles of the filling material out of the big bag to a considerable extent.
  • the entrained amount of contents is so significant that in addition to the interest in avoiding the escape of dust into the environment, there is also an economic interest in retaining the leaked Gree staub.
  • a filling device is proposed in which the inlet for the filling gas for inflating the big-bag is also used as an emptying device for the escape of the gas during filling of the container. In this case, this opening is provided with a filter device which holds back the entrained product dusts.
  • the proposed solution is that the filter cake formed by the retained product dust on the filter does not need to be disposed of separately, since during inflation of the next big-bag, the filter is flushed out again by the reverse gas flow.
  • This eliminates not only the otherwise time-consuming maintenance of such a filter and the disposal of the filter cake, but the existing of the product filter cake is so entered into the next big-bag. In fact, therefore, no amount of product is lost by the escape of the filling gas through the filling operations, since the filtered-off particles are in each case filled again into the following container. From the nature of the proposed solution, it follows that the teaching can only be applied if an identical product is to be filled into a plurality of big bags. Furthermore, the document contains no information as to whether and in what way it could be used to solve an emission problem when emptying such a big-bag.
  • the big bag After the emptying process, however, the big bag will collapse after separation from the suction ring and thus possibly still be discharged by escaping air volume dust in the environment. Furthermore, the outer sides of the injector lance contaminated with the product from the big-bag are exposed to the ambient air, so that an emission can also take place in this way.
  • From the DE 43 03 261 A1 is a removal device for emptying big bags on the bottom outlet of such a big-bag, ie, described its lower opening.
  • the Big-Bag is hung on its upper loops in a transport rack.
  • This frame is movable, so that the Big-Bag can be stored, for example in a color change in the automotive industry even in partially empty state.
  • the edge of a discharge nozzle of the big-bag is slipped radially on the outside via a connection channel and fixed with a tension lock on the connection channel, which is connected via a resilient support with a collecting tray, which is arranged downstream of a conveyor unit, the powder removed, for example, a via a connecting line Farbspritzkabine feeds.
  • swivel arms are proposed, which can squeeze the outlet of the big bag without damage by a special design, so that the big bag can remain closed within the transport frame when the transport frame is stored together with the big bag. Due to the arrangement with the tight connection between the bag and outlet nozzle is largely ensured that during the discharge process no powder from the container into the
  • the outlet unit is replaced by another or subjected to a cleaning.
  • this does not teach in terms of a possible emission of residuals into the environment, but aims at avoiding contamination of new product with an old product, such as a color change from.
  • the outlet pipe of the big-bag is pulled outside over the connection channel and clamped from the outside. This allows along the outer wall the outlet nozzle of the Big-Bags powder in the space between
  • Outlet nozzle and connection channel get and collect above the tension lock. If the clamp is released to remove the spout from the connection channel, the accumulated at this point content powder in the environment. Furthermore, the inner sides of the big-bag or the discharge nozzle are contaminated below the proposed squeeze with the content of powder. If the Big-Bag is disconnected from the connection channel, these contaminated surfaces are exposed to the ambient air and powder residues can escape into the environment.
  • a similar device is from the US 2001/0 027 822 A1 known.
  • a discharge device for big bags which should allow a manual, complete and dust-free emptying of a big bag. It is expressly pointed out that dust-free emptying of a big-bag with regard to health-hazardous substances usually transported in such big-bags is important.
  • a funnel-shaped inlet which is adapted in its opening angle approximately to the lower end of the big-bag. Below the inlet funnel an iris seal is provided, which can be closed radially. The outlet of a big bag should be pulled into the funnel and passed through the iris cap.
  • the iris closure is followed by a tubular outlet, to which a clamping device, for example for connection to a stationary container for receiving the filling material, is provided.
  • a clamping device for example for connection to a stationary container for receiving the filling material. It is found to be particularly important that the outlet of the big-bag is passed through the iris seal into the connection piece, so that the iris seal is not with the is applied to be transfilled. Furthermore, it is proposed to make the outlet nozzle permeable to air, so that escaping air can escape through the transfer of the cargo from the target container into which the cargo is filled.
  • the air permeability should be designed so that this emerging air is filtered. Furthermore, it is specified as particularly advantageous that the emptying device can be used successively on a large number of big bags.
  • the DE 201 05 740 U1 describes a sack-connection device for dust-emission-free connection of a big-bag with a product outlet pipe, via which the contents of the sack can be supplied to the destination, for example a production plant.
  • an inflatable seal is proposed, which is dimensioned so that it can be arranged within the product outlet pipe and presses in an operating position, the bag around against the product outlet pipe, so that when the bag is opened in the bag contained product falls into the product outlet pipe without contaminating the outside of the product spout.
  • the lower end of the bag should be performed by the free cross section of the inflatable seal and arranged outside around the product outlet pipe around. This is to ensure that when removing the bag from the product outlet pipe during the emptying outside the product discharge pipe fitting part of the bag end in the product outlet pipe must be pulled in and under the inflatable seal. This is to ensure that no product dust can reach the outside of the product outlet pipe.
  • a double-ring docking device for dust-free connection of the outlet of a large bag known.
  • This device also serves to provide a dustproof connection between the big bag and a docking device, which can be connected to a piping system to supply the effluent from the big bag good destination.
  • the device described here comprises two coaxially arranged tubes, wherein the bag end is pulled over the outside of the inner tube and the inner tube is subsequently driven with its end edge against a seal, so that a dust-tight connection between the interior of the bag outlet and the interior of the inner tube consists. From the inner tube, the product enters the outer tube and above in the described piping system.
  • the device described in the document describes embodiments of the arrangement of the coaxial tubes, in particular, in order to drive them apart axially during the attachment of the bag.
  • the handling is improved by the personnel who must pull the bag spout over the inner tube, and also a better visual control of the proper attachment of the bag end over the coaxial inner tube is possible.
  • there is also the problem in the solution proposed here that upon release of the sack end from the docking device located in the bag end product residues can reach after the release of the seal on the outside of the inner tube. An immediate exit into the environment can be prevented only by the coaxial outer tube, with the release of the bag no tightness, which would prevent leakage of product dust into the environment.
  • product residues contaminate the sack outlet as a whole with product residues and trickle out after separating the bag from there and get into the environment.
  • the invention is therefore based on the object to provide a device and a method with which the product leakage of transported in big bags or similar soft packaging products can be largely prevented after completing a decanting process.
  • the inventive method for low-emission emptying of free-flowing powder or the like from large soft packaging, especially FIBC or big bags comprises the following steps: Positioning a large soft packaging on a first docking element, which is tightly closed by a first flap means arranged thereon, leading an outlet hose the soft packaging radially inwardly by a first annular sealing device of the first docking in a release position, so that the first sealing only touches the outside of the outlet hose, everting the outlet hose radially outward via a connecting piece of the first docking, so that the connecting piece only with the inside of the outlet hose comes into contact, driving the first sealing device into an operating position within the connecting piece, so that the outlet hose is S-shaped around the first sealing device and the edge of the connecting piece sets, and expanding the first sealing means, so that the outlet hose sealingly bears with its inside against the inner wall of the connecting piece.
  • a conventional big-bag with a tightly lockable docking as it for example DE 196 15 646 A1 .
  • WO 02/18247 A1 or the EP 1 083 137 A1 is known to connect, and even so that after emptying of such a big bag and the separation of the docking element only inner sides of the big bag can be contaminated with the powder previously contained in the big bag.
  • no pockets or the like between the outlet hose of the big-bag and the connecting piece can form, in which powder residues could accumulate that trickle when loosening the connection between the big bag and the first docking or contaminate the outsides of docking or outlet hose.
  • a big-bag can be part of a closed-drain system.
  • the method according to the invention is also suitable for emptying by means of vacuum suction.
  • the method is characterized in that the step of driving the first sealing device into the connecting piece takes place until a second sealing device comprises the outlet hose radially on the outside and sealingly abuts the end face of the connecting piece.
  • a clear positioning of the first sealing device via the principle of a stop is ensured and can therefore be reliably carried out by auxiliary staff or even automated.
  • a second sealing surface is thereby provided, which is arranged downstream of the sealing surface of the first sealing device and still ensures a reliable seal against the environment if the first sealing device should fail. Due to the arrangement of the second sealing device, the advantage according to the invention is still given that there are no pockets or dead spaces in which powder residues could accumulate, which could emit into the environment after releasing the connection between the outlet hose of the big bag and the first docking element.
  • the expansion of the first sealing device takes place by inflation with compressed air or an inert gas.
  • compressed air or an inert gas.
  • an inert gas may also be used if, for example, the powder to be replicated should be particularly susceptible to oxidation.
  • the method according to the invention further comprises the step of docking on a second docking element, which is tightly closed by a flap device complementary thereto to the first flap device, for at least partially emptying the soft packet, wherein the flap means comprises the first and second docking elements Close the docking step.
  • Such a second docking element may, for example, be connected to a pneumatic conveying system or similar device for conveying away the powder removed from the big bag.
  • the second docking member provided with a sealing device complementary to that of the first docking element, such as in DE 196 15 646 A1 .
  • WO 02/18247 A1 or the EP 1 083 137 A1 the procedure may meet the requirements for technical measures for permanent leak tightness and safe compliance with exposure limits in accordance with the 28th ATP of Directive 67/548 / EEC for the transfer of potentially harmful powders which have no reliable knowledge as to the degree of possible health - or environmental hazard.
  • the device according to the invention also especially for a vacuum suction.
  • this comprises the setting of the outlet tube after the at least partial emptying of the soft packaging.
  • the first docking element is separated from the second docking element and coupled to a third docking element, this docking element likewise comprising a complementary flap device as sealing device, as for example DE 196 15 646 A1 .
  • the flap means sealing the first and second docking members during the step of severing and the flapper means sealingly sealing the first and third docking members during the step of docking.
  • the cleaning step comprises a wet cleaning and subsequent drying. This makes it possible to bind the dust particles sufficiently to achieve a reliable cleaning.
  • the first sealing device again moved to the release position and the soft packaging separated from the first docking element and a further treatment or disposal is supplied, for example, a special waste incineration.
  • the inventive device for low-emission emptying of large soft packaging, especially FIBC or big bags has a first docking element, which is tightly closed by a first flap means arranged thereon, a connecting piece for connecting a discharge hose of the soft packaging with the tightly closed by the flap means first Docking element, and a first annular sealing device which is movable from a release position to an operating position, wherein the first sealing device is in the operating position within the connecting piece to press against the parts of the inside of the outlet hose of the soft packaging with the inside of the connecting piece together.
  • the device according to the invention is characterized in that the first sealing device for producing the tight connection of outlet hose and connecting piece is elastically expandable, in particular that the first sealing device is expandable by inflation.
  • a second sealing device which comprises a sealing ring, which is attached to a device for moving the first sealing device and has a larger diameter than the first sealing means, and the sealing ring on its first sealing means facing the axial end face a having elastic covering, with which a portion of the inside of the outlet hose is sealingly pressed against an axial end face of the connecting piece.
  • first and the second sealing means are arranged on a device for moving the first and second sealing means from the release position to the operating position at a fixed distance from each other, in particular when the operating position by the system of the second sealing device on the Front side of the connecting piece is defined.
  • the device according to the invention is characterized by a second sealing element which can be closed tightly and which can be closed tightly by a further flap device which is complementary to the first flap device and which can be coupled to the first docking element for emptying the soft pack, and a third sealable seal Docking element, which is also sealed by a complementary to the first flap device further flap device and to which the first docking element can be coupled, wherein in a through the further flap means or the like tightly closed interior of the third docking a cleaning head is arranged and the cleaning head from a rest position in the third docking element is movable into a cleaning position, so that at least one cleaning agent outlet is located within the first docking element.
  • a particularly compact design and reduced costs for the construction of a device according to the invention can be obtained if the device is characterized by a second tightly sealable docking, the by a thereto arranged to the first flap means complementary further flap means is tightly closed and which can be coupled to the first docking element for emptying the soft packaging, wherein in the through the further flap means or the like tightly sealable interior of the second docking a cleaning head is arranged and the cleaning head a rest position in the second docking element is movable into a cleaning position, so that there is at least one makesffenauslass within the first docking element.
  • a big-bag 1 which may for example comprise an outer bag 2 made of a solid polyester fabric with an inner film bag 3 made of polyethylene, aluminum or an aluminum-coated plastic.
  • the big-bag 1 is filled, for example, with a toxic powder that is to be sent for further processing.
  • the inner bag 3 has an outlet hose 4, which is tightly welded and tied above the weld 5 together with the outer bag 2.
  • the outer bag 2 is provided with schematically illustrated loops 6 for hanging in a truss frame 7.
  • the truss frame is with conventional slings 8 (only in FIG. 1 shown omitted in the other figures for clarity) connected to the hook 9 of a conventional overhead crane 10.
  • the overhead crane 10 may be part of a frame 11, as in FIG. 9 is recognizable.
  • the weld 5 of the outlet tube 4 is cut off.
  • the first docking element 12 that increases in size FIG. 11 is shown, comprises a lower frame 13 to which a connecting piece 14 is attached. Furthermore, an upper frame 15 is provided, which is telescopable relative to the lower frame 13 along the axis 16 of the connecting piece 14. Two or more cantilevers 17 are connected opposite one another to the upper frame 15 and carry at their free end a first sealing device in the form of a radially outwardly expandable Blähmanschette 18.
  • the outer diameter of the Blähmanschette 18 is slightly less than the inner diameter of the connecting piece 14 in the unexpanded state As a result, the first sealing device can be moved into the connection piece 14.
  • a second sealing means in the form of an annular disc 19 is provided above this, which has on its the Blähmanschette 18 facing axial end face an elastic coating 20.
  • the Diameter of the annular disc 19 is determined so that this substantially corresponds to the diameter of the upper edge 21 of the connecting piece 14.
  • the fixed distance between the blowing collar 18 and the annular disc 19 is chosen in accordance with the desired immersion depth of the first sealing in the connecting piece 14.
  • the annular disk 19 with its pad 20 thus also serves as a stop when driving in the Blähmanschette 18 in the connecting piece 14th
  • a connecting piece 14 down tightly sealing flap 22 is attached. It is a part of a flap arrangement of the kind, as for example from the WO 02/18247 A1 or the EP 1 083 137 A1 is known. These are mutually complementary flaps, which are each arranged in a docking element, as here the first docking element 12, the second docking element 23, as shown in the FIGS. 4 and 5 can be seen, or the third docking 24, as in FIGS. 6 and 7 to recognize.
  • the flaps are designed so that they fit exactly to one another and are fixed when two docking elements 12, 23, 24 are docked.
  • each one of the flaps has a drive over which the flap can be opened and closed.
  • Such a flap 22 is referred to as active flap.
  • An active flap can also, z. B. because of the electrical connections to the power supply and / or control, be arranged in a stationary docking element, as here the second docking element 23 or the third docking 24.
  • Such a system can be further designed so that a separation of the docking elements is only possible with closed flaps, as shown in the figures.
  • the upper frame 15 is telescoped to maximum distance from the lower frame 13.
  • the open end of the outlet hose 4 can be pulled radially inward through the annular disk 19 and the blowing collar 18 and be slipped over the outside of the connecting sleeve 14.
  • the connecting piece 14 comes only with the inside, and the annular disk 19 as a second sealing device and the Blähmanschette 18 as a first sealing device only with the outside of the outlet hose 4 in contact.
  • the Blähmanschette 18 is moved into the connecting piece 14, so that the outlet hose 4 approximately 180 ° to the Blähmanschette 18 sets.
  • the distance between the upper frame 15 and the lower frame 13 is reduced so far, until the elastic covering 20 of the annular disc 19 rests on the upper edge 21 of the connecting piece 14.
  • the outlet hose 4 is already pressed sealingly against the edge 21 of the connecting piece 14.
  • the maximum insertion depth for the Blähmanschette 18 in the connecting piece 14 and thus its operating position is fixed.
  • the big bag 1 is positioned with the first docking element 12 tightly attached thereto by means of the overhead crane 10 via a second docking element 23 ( FIG. 4 ) and lowered for docking on the second docking member 23 ( FIG. 5 ).
  • the second docking element 23 comprises a passive flap 25, the top of an also telescopic subframe 26 and is connected tightly to a bellows nozzle 27.
  • the bellows nozzle 27 is connected via a connecting line 35 with a pneumatic vacuum suction conveyor and serves as a so-called suction shoe for emptying the big-bag 1.
  • the ability to use a vacuum suction conveyor for emptying the big-bag 1, is a significant advantage of the invention over disposable -Schlauchsystemen.
  • the flaps 22 and 25 can now be opened coupled as indicated by the dashed line in FIG FIG. 5 is indicated and the powder can be removed from the big bag.
  • the flaps of 22 and 25 lie on each other so that no dead space is created between them or this dead space is sealed so that no powder can settle in such a dead space.
  • the proposed construction ensures that after closing the connection and the separation of docking element 12 and docking element 23 virtually no or only extremely minimal contaminated with the powder surfaces of the environment are accessible.
  • the outlet hose 4 of the big-bag 1 is tied off and after removal of the residual amounts from the connecting piece 14, the flaps 22 and 25 are closed. Now, the big bag 1 with the first docking element 12 can be separated from the second docking element 23, without which significant exposition of powder residues to the environment is to be expected.
  • the big bag 1 with the first docking element 12 can now be positioned with the aid of the overhead crane 10 above the third docking element 24 and lowered onto it for docking ( FIG. 6 ).
  • the third docking element 24 is part of a cleaning station and also has a passive flap 25.
  • the cleaning station is a cleaning head 28 in its rest position. After opening the flaps 22 and 25, the cleaning head 28 can be brought into a cleaning position in which at least one cleaning agent outlet 29 is located inside the first docking element 12, in particular within the connecting piece 14 ( FIG. 7 ).
  • the inside of the connection piece 14 and outlet hose 4 can be cleaned to the setting of adhering residues of content, by a wet cleaning can also be bound and reliably removed dust particles become. Subsequent drying sensibly completes the cleaning process.
  • the cleaning head 28 is moved back into its rest position, the flaps 22 and 25 are closed and the first docking element 12 separated from the third docking element 24.
  • the inflation sleeve 18 can now be vented and moved into the release position, so that the outlet hose 4 can be pulled out of the first docking.
  • the Big-Bag 1 can now be fed to a proper disposal or treatment ( FIG. 8 ) and the first docking element 12 can be reused for the next big bag 1 to be emptied.
  • FIG. 9 shows an alternative embodiment of a second docking element 23 at a discharge station.
  • an additional suction 33 is provided around them over part of the circumference in order to readily suck off powder particles emitted when the first docking element 12 and the second docking element 23 are docked or separated.
  • FIG. 10 Finally, in a schematic plan view shows an arrangement for a staging station 30, a drainage station 31 and a cleaning station 32.
  • the big bag 1 can be hung in the truss frame 7, or it is equal delivered with such a for example by a forklift , The big bag 1 is hooked there into the hook 9 of the crane 10.
  • the first docking member is attached in the manner described.
  • the big-bag 1 as with respect to the FIGS. 4 and 5 described emptied.
  • the additional suction 33 off FIG. 9 to recognize.
  • the cleaning station 32 the big-bag 1 as the FIGS. 6 and 7 be cleaned described.
  • the first docking element 12 is removed from the big bag 1 and the big bag 1 is sent for disposal or processing.
  • the transport between the individual stations is expediently carried out via the overhead crane 10, but it can also take place with any other suitable conveying method known from operational practice, for example by a movable frame in which the big bag 1 stands or hangs.
  • a separate cleaning station 32 can be dispensed with and the cleaning head 28 can be integrated into the second docking element 23.
  • the device can be designed so very compact design and causes lower creation costs. However, to do this, e.g. be ensured by suitable valve devices that no detergent residues get into the product stream.
  • FIG. 12 again shows all the steps of a preferred embodiment of the method according to the invention in a compilation.
  • the welding 5 of the outlet hose 4 of the big-bag 1 is cut off.
  • the end of the outlet hose 4 is sealed to the first docking member 12.
  • the flaps 22 and 25 are closed.
  • the big-bag 1 is lowered with the first docking member 12 closely attached thereto for docking with the second docking member 23, which serves as a suction shoe and is connected to a vacuum conveyor or the like means for conveying the product to a point of use.
  • a hermetically sealed connection is made and the binding of the outlet hose 4 is opened.
  • the flaps 22 and 25 are opened and the contents can be removed from the Big-Bag 1.
  • the cleaning head 28 can be moved to its cleaning position and the inside of the first docking element 12 and outlet hose 4 are cleaned of residual contents, as shown at K.
  • the flaps 22 and 25 are closed, the first docking member 12 separated from the third docking member 24 and the big bag 1 detached from the first docking member 12, as shown at L.
  • the big bag 1 may now be discarded or reused and a new filled big bag 1 may be connected to the first docking member as shown at A and B.
  • a method comprising the following steps is proposed even after completion of a transfer process: Positioning a large soft package 1 over a docking element 12 which can be closed by a flap device 22 arranged thereon, guiding a discharge tube 4 of the soft packaging 1 through a sealing device 18 of FIG Docking element 12 in a release position, so that the sealing device 18 contacts the outside of the outlet hose 4, driving the sealing device 18 into an operating position within the connecting piece 14, and expanding the sealing device 18, so that the outlet hose 4 with its inner side sealingly against the inner wall of the connecting piece 14 is applied, and a device with a docking element 12, which is tightly closed by a valve device arranged thereon 22, a connecting piece 14 for connecting a discharge hose 4 of the soft packaging 1 with the sealing element closable by the flap device 22 docking element 12, with a sealing device 18 which is movable from a release position to an operating position, wherein the sealing device 18 is in the operating position within the connecting piece 14 to parts of the inside of the outlet hose 4

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Basic Packing Technique (AREA)
  • Vacuum Packaging (AREA)
  • Closing Of Containers (AREA)
  • Wrapping Of Specific Fragile Articles (AREA)
  • Container Filling Or Packaging Operations (AREA)

Claims (17)

  1. Procédé pour vidanger avec de faibles émissions de poussières des poudres aptes à s'écouler ou similaires contenues dans de grands conteneurs souples, en particulier des FIBC ou des big-bags, caractérisé par les étapes suivantes :
    positionnement d'un grand conteneur souple (1) au-dessus d'un premier élément d'accrochage (12), qui est apte à être fermé hermétiquement par un premier système de clapet (22), monté sur ce dernier,
    guidage d'un tuyau flexible de vidange (4) du conteneur souple (1) radialement à l'intérieur à travers un premier dispositif d'obturation (18) annulaire du premier élément d'accrochage (12) dans une position de desserrage, de telle sorte que le premier dispositif d'obturation (18) entre en contact seulement avec la face extérieure du tuyau flexible de vidange (4),
    retournement du tuyau flexible de vidange (4) radialement à l'extérieur sur une tubulure de raccord (14) du premier élément d'accrochage (12), de telle sorte que la tubulure de raccord (14) entre en contact uniquement avec la face intérieure du tuyau flexible de vidange (4),
    introduction du premier dispositif d'obturation (18) dans une position de service à l'intérieur de la tubulure de raccord (14), de telle sorte que le tuyau flexible de vidange (4) se pose en forme de S autour du premier dispositif d' obturation (18) et du bord (21) de la tubulure de raccord (14), et
    expansion du premier dispositif d'obturation (18), de telle sorte que le tuyau flexible de vidange (4) vient en appui étanche avec sa face intérieure contre la paroi intérieure de la tubulure de raccord (14).
  2. Procédé selon la revendication 1, caractérisé en ce que l'étape de l'introduction du premier dispositif d'obturation (18) dans la tubulure de raccord (14) est appliquée jusqu'à ce qu'un deuxième dispositif d'obturation (19, 20) entoure radialement à l'extérieur le tuyau flexible de vidange (4) et est amené en appui étanche axialement du côté frontal contre la tubulure de raccord (14).
  3. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que l'expansion du premier dispositif d'obturation (18) est produite sous l'effet d'un gonflage avec de l'air comprimé ou un gaz inerte.
  4. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que le procédé comporte, en outre, l'étape de l'accrochage sur un deuxième élément d'accrochage (23) qui est apte à être fermé hermétiquement par un système de clapet (25) monté sur ce dernier et complémentaire du premier système de clapet (22), pour une vidange au moins partielle du conteneur souple (1), les systèmes de clapet (22, 25) obturant hermétiquement le premier et le deuxième élément d'accrochage (12, 23) pendant l'étape d'accrochage.
  5. Procédé selon la revendication 4, caractérisé en ce que le tuyau flexible de vidange (4) est ligaturé après la vidange au moins partielle du conteneur souple (1).
  6. Procédé selon la revendication 5, caractérisé en ce que la face intérieure du tuyau flexible de vidange (4), depuis son extrémité ouverte jusqu'à la ligature, et la face intérieure de la tubulure de raccord (14) sont nettoyées de tous les résidus adhérant contre celles-ci.
  7. Procédé selon la revendication 6, caractérisé en ce que, avant l'étape de nettoyage, le premier élément d'accrochage (12) est séparé du deuxième élément d'accrochage (23) et est couplé à un troisième élément d'accrochage (24), qui est également propre à être fermé hermétiquement par un système de clapet (22) supplémentaire, complémentaire du système de clapet (22), les systèmes de clapet (22, 25) obturant hermétiquement le premier et le deuxième élément d'accrochage (12, 23) pendant l'étape de la séparation et les systèmes de clapet (22, 25) obturant hermétiquement le premier et le troisième élément d'accrochage (12, 24) pendant l'étape d'accrochage.
  8. Procédé selon la revendication 6 ou 7, caractérisé en ce que l'étape de nettoyage comporte un nettoyage humide et un séchage consécutif.
  9. Procédé selon l'une quelconque des revendications 5 à 8, caractérisé en ce que, après la ligature du tuyau flexible de vidange (4) et l'étape de nettoyage, le premier dispositif d'obturation (18) est amené à nouveau dans la position de desserrage et le conteneur souple (1) est séparé du premier élément d'accrochage (12) et est transporté vers un traitement ultérieur ou vers le traitement des déchets.
  10. Dispositif pour vidanger avec de faibles émissions de poussières de grands conteneurs souples, en particulier des FIBC ou des big-bags, comportant un premier élément d'accrochage (12) qui est apte à être fermé hermétiquement par un premier système de clapet (22) monté sur ce dernier, une tubulure de raccord (14) pour raccorder un tuyau flexible d'évacuation (4) du conteneur souple (1) avec le premier élément d'accrochage (12), apte à être fermé hermétiquement par le système de clapet (22), et comportant un premier dispositif d'obturation (18) annulaire qui peut être amené hors d'une position de desserrage dans une position de service, sachant que le premier dispositif d'obturation (18) dans la position de service se situe à l'intérieur de la tubulure de raccord (14), pour pousser des parties de la face intérieure du tuyau flexible d'évacuation (4) du conteneur souple (1) de manière étanche contre la face intérieure de la tubulure de raccord (14).
  11. Dispositif selon la revendication 10, caractérisé en ce que le premier dispositif d'obturation (18) peut être expansé élastiquement pour établir l'assemblage étanche du tuyau flexible de vidange (4) et de la tubulure de raccord (14).
  12. Dispositif selon la revendication 10 ou 11, caractérisé en ce que le premier dispositif d'obturation (18) peut être expansé par gonflage.
  13. Dispositif selon l'une quelconque des revendications 10 à 12, caractérisé en ce qu'il est prévu un deuxième dispositif d'obturation, qui comporte une bague d'étanchéité (19) qui est fixée à un dispositif (17) destiné à déplacer le premier dispositif d'obturation (18) et possède un diamètre supérieur à celui du premier dispositif d'obturation (18), et la bague d'étanchéité (19) comporte, sur sa face frontale axiale orientée vers le premier dispositif d'obturation (18), un revêtement élastique (20), par lequel un tronçon de la face intérieure du tuyau flexible de vidange (4) peut être poussé de manière étanche contre une face frontale axiale de la tubulure de raccord (14).
  14. Dispositif selon la revendication 13, caractérisé en ce que le premier (18) et le deuxième dispositif d'obturation (19, 20) sont agencés à une distance fixe l'un de l'autre sur un dispositif (13, 15, 17) destiné à déplacer le premier (18) et le deuxième dispositif d'obturation (19, 20) hors de la position de desserrage dans la position de service.
  15. Dispositif selon la revendication 14 caractérisé en ce que la position de service est définie par l'appui du deuxième dispositif d'obturation (19, 20) contre la face frontale (21) de la tubulure de raccord (14).
  16. Dispositif selon l'une quelconque des revendications 10 à 15, caractérisé par un deuxième élément d'accrochage (23) qui est apte à être fermé hermétiquement par un système de clapet (25) supplémentaire, monté sur ce dernier et complémentaire du premier système de clapet (22), et qui peut être couplé au premier élément d'accrochage (12) pour la vidange du conteneur souple (1), ainsi qu'un troisième élément d'accrochage (24) propre à être fermé hermétiquement, qui peut également être fermé hermétiquement par un système de clapet (25) supplémentaire, complémentaire du premier système de clapet (22) et auquel peut être couplé le premier élément d'accrochage (12), sachant qu'une tête de nettoyage (28) est agencée dans un volume intérieur du troisième élément d'accrochage (24), lequel peut être fermé hermétiquement par le système de clapet (25) supplémentaire ou tout élément similaire, et ladite tête de nettoyage (28) peut être déplacée hors d'une position de repos dans le troisième élément d'accrochage (24) dans une position de nettoyage, de telle sorte qu'au moins une sortie de produit de nettoyage (29) se situe à l'intérieur du premier élément d'accrochage (12).
  17. Dispositif selon l'une quelconque des revendications 10 à 15, caractérisé par un deuxième élément d'accrochage (23) apte à être fermé hermétiquement, lequel peut être fermé hermétiquement par un système de clapet (25) supplémentaire, monté sur ce dernier et complémentaire du premier système de clapet (22), et lequel peut être couplé au premier élément d'accrochage (12) pour la vidange du conteneur souple (1), sachant qu'une tête de nettoyage (28) est agencée dans un volume intérieur du deuxième élément d'accrochage (23), lequel peut être fermé hermétiquement par le système de clapet (25) supplémentaire ou tout élément similaire, et ladite tête de nettoyage (28) peut être déplacée hors d'une position de repos dans le deuxième élément d'accrochage (23) dans une position de nettoyage, de telle sorte qu'au moins une sortie de produit de nettoyage (29) se situe à l'intérieur du premier élément d'accrochage (12).
EP06724717A 2005-05-04 2006-05-04 Procede et dispositif pour vider avec de faibles emissions des substances contenues dans des grands sacs Not-in-force EP1890940B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005021368A DE102005021368A1 (de) 2005-05-04 2005-05-04 Verfahren und Vorrichtung zur emissionsarmen Entleerung von Inhaltsstoffen aus großen Weichverpackungen
PCT/EP2006/004189 WO2006117224A1 (fr) 2005-05-04 2006-05-04 Procede et dispositif pour vider avec de faibles emissions des substances contenues dans des grands sacs

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EP1890940A1 EP1890940A1 (fr) 2008-02-27
EP1890940B1 true EP1890940B1 (fr) 2010-12-15

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EP (1) EP1890940B1 (fr)
AT (1) ATE491643T1 (fr)
DE (2) DE102005021368A1 (fr)
WO (1) WO2006117224A1 (fr)

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CH708545A1 (de) * 2013-09-02 2015-03-13 Rubitec Ag Verfahren zum Umfüllen von Prozessmaterial zwischen einem Behältnis und einem Vorratsgefäss und Vorrichtung dazu.
DE102020114664A1 (de) 2020-06-02 2021-12-02 Taulosystems GmbH Vorrichtung und Verfahren zur emissionsarmen Befüllung oder Entleerung flexibler Transportbehälter

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DE102005021368A1 (de) 2006-11-09
DE502006008515D1 (de) 2011-01-27
WO2006117224A1 (fr) 2006-11-09
EP1890940A1 (fr) 2008-02-27
ATE491643T1 (de) 2011-01-15

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