EP1890940B1 - Method and device for the low-emission emptying of contents from large soft packagings - Google Patents
Method and device for the low-emission emptying of contents from large soft packagings Download PDFInfo
- 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
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Classifications
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- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Basic Packing Technique (AREA)
- Container Filling Or Packaging Operations (AREA)
- Vacuum Packaging (AREA)
- Closing Of Containers (AREA)
- Wrapping Of Specific Fragile Articles (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren und eine Vorrichtung zur emissionsarmen Entleerung von Inhaltsstoffen aus großen Weichverpackungen.The invention relates to a method and a device for low-emission emptying of ingredients from large soft packaging.
Insbesondere rieselfähige pulverförmige Inhaltsstoffe werden zur Zwischenlagerung oder zur Weiterverarbeitung in größeren Mengen in große Weichverpackungen abgefüllt, die unter den Bezeichnungen "FIBC" (Flexible Intermediate Bulk Container) oder "Big-Bag" bekannt sind. Diese Big-Bags bestehen typischerweise aus einem äußeren Sack, der mechanischen Schutz und mechanische Stabilität bietet, sowie vorzugsweise so geschnitten ist, dass das gefüllte Gebinde annähernd Quaderform annimmt, um eine gute Raumausnutzung bei Transport und Lagerung zu ermöglichen. Weiterhin umfasst ein solcher Big-Bag einen inneren Foliensack, der eine dichte Verpackung gewährleistet. Das Material für den Innensack kann dabei dem aufzunehmenden Transportgut in seinen Eigenschaften angepasst sein. Der Innensack soll verhindern, dass Transportgut durch den Sack nach außen gelangt, aber auch das Transportgut vor Umwelteinflüssen, insbesondere Feuchtigkeit, schützen. Üblicherweise sind die Abmessungen der Big-Bags auf typische Industriepalettenmaße oder die Maße von Europaletten abgestimmt. Dadurch können gefüllte Big-Bags auf solchen Paletten gelagert und mit üblichen Umschlagmitteln wie Gabelstaplern transportiert und verladen werden. Dabei kann das Aufnahmevolumen von solchen Big-Bags durchaus in der Größenordnung von 1 bis 2 m3 liegen.In particular, free-flowing powdery ingredients are filled for intermediate storage or for further processing in large quantities in large soft packs, which are known under the designations "FIBC" (Flexible Intermediate Bulk Container) or "Big-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. Furthermore, 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. Usually, the dimensions of the big bags are matched to typical industrial pallet dimensions or the dimensions of europallets. As a result, 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 .
Typische Big-Bags weisen einen am einen Ende dicht verschweißten Auslaufschlauch auf. Dieses Ende bildet hinterher das untere Ende. Oberhalb des unteren Endes ist der Big-Bag üblicherweise abgebunden, um später nach Abschneiden der Verschweißung ein kontrolliertes Entleeren des Big-Bags zu ermöglichen. An dem anderen Ende, das später das obere Ende bildet, ist der Big-Bag üblicherweise offen. Typischerweise wird der Big-Bag vor dem Befüllen mit Luft oder einem Gas aufgeblasen, um annähernd seine Endform anzunehmen und dann mit speziellen Befüllungseinrichtungen befüllt. Nach der Befüllung wird der Big-Bag oben abgebunden und ist damit geschlossen.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.
Normalerweise weisen Big-Bags noch am oberen Ende Schlaufen auf, in die entweder unmittelbar Gabelstaplerzinken eingeführt werden können oder mit denen Big-Bags in Gestelle zur Entleerung oder Traversen eingehängt werden können, mit denen solche Big-Bags beispielsweise mit Laufkränen gehandhabt werden können.Usually, 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.
Der wesentliche Vorteil von Big-Bags ist neben dem niedrigen Eigengewicht der geringe Raumbedarf zum Vorhalten von noch nicht befüllten Big-Bags und auch ein niedriger Kapitalbedarf, da typische Big-Bags aus Materialien wie Polyester, Polypropylen oder Polyethylen bestehen. Schließlich ist noch ein Vorteil darin zu sehen, dass Big-Bags kostengünstig als Einwegbehälter dienen können. Dies kann dann von Vorteil sein, wenn entweder weite Transportstrecken zurückzulegen sind, die eine Rückführung der Transportmittel sehr aufwändig machen oder besonders giftige, reaktive oder sonst schwierig zu handhabende Produkte aufnehmen sollen, für die bei wiederverwendbaren Behältern ein großer Reinigungsaufwand betrieben werden müsste, einschließlich der umweltgerechten Entsorgung der Reinigungsrückstände. Big-Bags, in denen die kritischen Produkte transportiert wurden, können in der Regel ohne weiteres in Sondermüllverbrennungsanlagen entsorgt werden.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. Finally, there is another advantage to be seen in the fact that 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.
Aus dieser besonderen Eignung von solchen Big-Bags für toxische, reaktive oder sonst kritische Produkte ergibt sich das Problem, dass möglicherweise auch bei Befüllung und Entleerung des Big-Bags ein Austreten des Inhaltsstoffes in die Umgebung möglichst zu unterbinden ist. Ein besonders großes Problem tritt dabei bei der Befüllung auf, da bei der Befüllung des Big-Bags mit dem Transportgut zugleich im Gegenstrom das Gas, das zum Aufblasen des Big-Bags verwendet wurde, aus dem Big-Bag entweichen muss und dabei relativ hohe Staubmengen mit aus dem Behälter austrägt. Dieses Problem ist grundsätzlich auch bei der Befüllung von festen Behältern, wie Silocontainern oder dergleichen, bekannt und zur Lösung des Problems kann auf entsprechende Verfahren und Vorrichtungen zurückgegriffen werden.From this particular suitability of such big bags for toxic, reactive or otherwise critical products, there is the problem that may possibly be prevented when filling and emptying of the big bag leakage of the ingredient into the environment as possible. A particularly great problem occurs during the filling, since when filling the big bag with the cargo at the same time in countercurrent, the gas that was used to inflate the big bag, must escape from the big bag and thereby relatively high amounts of dust with out of the container. This problem is basically also in the filling of solid containers, such as Silocontainern or the like, known and to solve the problem, appropriate methods and devices can be used.
Problematischer gestaltet sich jedoch der Entleerungsvorgang bei einem Big-Bag. Bisher wurden besonders kritische Produkte vorzugsweise in festen Behältern, wie Silocontainern, befördert, da für solche Behälter bereits als technisch dicht eingestufte Andock- und Entleerungssysteme bekannt sind, die einen Austritt von Transportgut vor, während und nach dem Entleerungsvorgang in die Umwelt zuverlässig vermeiden. Dabei sind verschiedene Verschlusssysteme bekannt, die jeweils eine Koppelung mit einer Andockstation ermöglichen und sicherstellen, dass sowohl Behälter als auch andockstationsseitige Verschlussorgane erst nach erfolgter Ankoppelung geöffnet werden. Dabei sind die Verschlussorgane von Andockstation und Behälter so ausgebildet, dass diese nach dem Verschließen und Abkoppeln des Behälters von der Andockstation keine mit dem Transportprodukt kontaminierten Außenflächen aufweisen. Diese Komponenten für solche Entleerungssysteme sind verhältnismäßig aufwändig und teuer, so dass eine Einwegverwendung wirtschaftlich nicht in Frage kommt.However, the emptying process for a big bag is more problematic. So far, particularly critical products were preferably transported in solid containers, such as silo containers, since such containers are already known as technically dense docking and emptying systems that reliably prevent leakage of cargo before, during and after the emptying process into the environment. In this case, various closure systems are known which each allow a coupling with a docking station and ensure that both containers and docking station-side closure members are opened only after successful coupling. In this case, the closure members of the docking station and container are designed so that they have no sealed with the transport product outer surfaces after closing and uncoupling of the container from the docking station. These components for such evacuation systems are relatively expensive and expensive, so that disposable use is not economically viable.
Zwar wurden verschiedentlich Lösungen vorgeschlagen, eine teilweise sogar als emissionsfrei bezeichnete Entleerung von Big-Bags zu ermöglichen. Das insbesondere jedoch nicht zufriedenstellend gelöste Problem zur Vermeidung kontaminierter Bereiche, die hinterher der Umgebungsluft ausgesetzt sind, haben bisher den Einsatz von Big-Bags bei besonders umweltkritischen Produkten oder solchen Produkten, bei denen keine ausreichenden Kenntnisse über ein Gefährdungspotential vorliegen, stark eingeschränkt.Although various solutions have been proposed to allow a sometimes even designated as emission-free emptying of big-bags. However, the particular unsatisfactorily solved problem of avoiding contaminated areas that are subsequently exposed to the ambient air has hitherto severely limited the use of big-bags in the case of particularly environmentally critical products or those products in which there is insufficient knowledge of a hazard potential.
Im Stand der Technik wurden zahlreiche Vorschläge gemacht, wie die bekannten Nachteile zu überwinden wären.Numerous proposals have been made in the art for overcoming the known disadvantages.
Aus
Aus der
Eine ähnliche Einrichtung ist auch aus der
Aus der
Aus Vorstehendem ergibt sich, dass diese Andockvorrichtungen, die eine zuverlässig dichte und emissionsarme Umfüllung von rieselfähigen Produkten ermöglichen, mit hoher Präzision gefertigt werden müssen und zum Erhalt der Dichtheit korrosionsunanfällige und damit teure Werkstoffe sowie hochwertige Dichtungen eingesetzt werden müssen. Daraus ergibt sich ebenfalls, dass ein behälterseitiges Andockelement der bekannten Art für die Integration in einen Einwegbehälter, wie Big-Bags, aus wirtschaftlichen Gründen nicht ernsthaft in Erwägung gezogen werden kann.As can be seen from the above, these docking devices, which enable a reliably dense and low-emission transfer of free-flowing products, must be manufactured with high precision and must be used to obtain the tightness of corrosion-prone and therefore expensive materials and high-quality seals. It also follows that a container-side docking element of the known type for integration into a disposable container, such as big bags, for economic reasons can not be seriously considered.
Aus der
Aus der
In der
Mit dem Problem des staubdichten Austragens von Pulver aus einem Big-Bag beschäftigt sich die
Es wird daher vorgeschlagen, einen solchen Big-Bag durch eine Absaugvorrichtung von oben zu entleeren. Dazu wird auf den dazu bereits bekannten Stand der Technik verwiesen, wobei der Stand der Technik dahingehend kritisiert wird, dass mit den zuvor bekannten Absaugvorrichtungen eine erhebliche Staubentwicklung verbunden sei. Zur Lösung dieser Probleme wird ein lanzenartiges Injektorrohrsystem vorgeschlagen, das von oben in den Behälter eingeführt wird und entsprechend dem Entleerungsstand nachgeführt werden kann. Der Sack soll dabei staubdicht mit einem Absaugring verbunden sein, der gegenüber dem Injektorrohrsystem verschieblich ist und der an eine Absaugeinrichtung angeschlossen werden kann, so dass der sich durch das Einblasen der Förderluft bildende Staub abgesaugt werden kann. Durch die vorgeschlagene Vorrichtung kann zwar der Entleerungsvorgang selbst so durchgeführt werden, dass praktisch kein Staub in die Umgebung emittiert wird. Nach dem Entleerungsvorgang wird jedoch der Big-Bag nach dem Trennen von dem Absaugring in sich zusammenfallen und damit möglicherweise noch durch entweichendes Luftvolumen Staub in die Umgebung ausgetragen. Weiterhin sind die mit dem Produkt aus dem Big-Bag kontaminierten Außenseiten der Injektorlanze der Umgebungsluft ausgesetzt, so dass auch auf diesem Wege eine Emission erfolgen kann.It is therefore proposed to empty such a big-bag by a suction device from above. Reference is made to the already known prior art, the prior art is criticized to the effect that with the previously known suction a considerable dust development is connected. To solve these problems, a lancet-type Injektorrohrsystem is proposed, which is introduced from above into the container and can be tracked according to the emptying level. The bag is to be connected dust-tight with a suction ring, which is displaceable relative to the Injektorrohrsystem and which can be connected to a suction device, so that the dust forming by injecting the conveying air can be sucked. Although the emptying process itself can be carried out by the proposed device so that practically no dust is emitted into the environment. 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.
Aus der
Umgebung gelangen kann. Weiterhin wird vorgeschlagen, dass nach dem Trennen des Big-Bags von der Auslaufeinheit die Auslaufeinheit gegen eine andere ausgetauscht wird oder einer Reinigung unterzogen wird. Dies geschleht allerdings nicht im Hinblick auf eine mögliche Emission von Reststoffen in die Umgebung, sondern zielt auf eine Vermeidung einer Verunreinigung von neuern Produkt mit einem alten Produkt, beispielsweise bei einem Farbwechsel, ab. Weiterhin wird der Auslaufstutzen des Big-Bags außen über den Anschlusskanal gezogen und von außen daran festgeklemmt. Dadurch kann entlang der Außenwandung das Auslaufstutzens des Big-Bags Pulver in den Raum zwischenEnvironment can reach. Furthermore, it is proposed that after the separation of the big-bag from the outlet unit, the outlet unit is replaced by another or subjected to a cleaning. However, 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. Furthermore, 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
Auslaufstutzen und Anschlusskanal gelangen und sich oberhalb des Spannverschlusses sammeln. Wird der Spannverschluss gelöst, um den Auslaufstutzen von dem Anschlusskanal zu entfernen, gelengt das an dieser Stelle angesammelte Inhaltspulver in die Umgebung. Weiterhin sind die Innenseiten des Big-Bags bzw. des Auslaufstutzens unterhalb das vorgeschlagenen Quetschverschlusses mit dem Inhaltspulver kontaminiert. Wird der Big-Bag von dem Anschlusskanal getrennt, sind diese kontaminierten Flächen der Umgebungsluft ausgesetzt und Pulverreste können in die Umgebung gelangen. Eine ähnliche Vorrichtung ist aus der
Aus der
Die
Hierzu wird eine Blähdichtung vorgeschlagen, die so dimensioniert ist, dass sie innerhalb des Produkt-Auslaufrohres angeordnet werden kann und in einer Betriebsstellung den Sack rundherum gegen das Produkt-Auslaufrohr drückt, so dass bei geöffnetem Sack im Sack enthaltenes Produkt in das Produkt-Auslaufrohr fällt, ohne die Außenseite des Produkt-Auslaufrohrs zu kontaminieren. Das untere Sackende soll dabei durch den freien Querschnitt der Blähdichtung durchgeführt und außen um das Produkt-Auslaufrohr herum angeordnet sein. Dadurch soll sichergestellt werden, dass beim Entfernen des Sackes von dem Produkt-Auslaufrohr der während des Entleerens außen am Produkt-Auslaufrohr anliegende Teil des Sackendes in das Produkt-Auslaufrohr hinein- und unter der Blähdichtung hindurchgezogen werden muss. Dadurch soll sichergestellt sein, dass kein Produktstaub an die Außenseite des Produkt-Auslaufrohres gelangen kann.For this purpose, 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.
Bei der beschriebenen Vorrichtung besteht jedoch das Problem, dass bei der beschriebenen Vorgehensweise zum Entfernen des Sackauslaufs Produktreste die Innenseite des Sackauslaufs auf der gesamten Länge verunreinigen können und nach dem Herausziehen des Sackes von dort in die Umgebung gelangen können. Auch aus der nach oben offenen Sack-Anschlussvorrichtung können Produktreste, insbesondere in Staubform, in die Umgebung gelangen.In the described device, however, there is the problem that in the described procedure for removing the sack outlet product residues can contaminate the inside of the sack outlet on the entire length and can get from there into the environment after pulling out of the bag. Product residues, in particular in the form of dust, can also escape into the environment from the upwardly open bag connection device.
Aus der
Der Erfindung liegt daher die Aufgabe zugrunde, eine Vorrichtung und ein Verfahren bereitzustellen, mit dem der Produktaustritt von in Big-Bags oder ähnlichen Weichverpackungen transportierten Produkten auch nach Abschluss eines Umfüllvorganges weitestgehend verhindert werden kann.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.
Diese Aufgabe wird erfindungsgemäß gelöst durch das nachfolgend beschriebene Verfahren und die nachfolgend beschriebene Vorrichtung.This object is achieved by the method described below and the apparatus described below.
Das erfindungsgemäße Verfahren zur staubemissionsarmen Entleerung von rieselfähigem Pulver oder ähnlichem aus großen Weichverpackungen, insbesondere FIBC oder Big-Bags, weist folgende Schritte auf: Positionieren einer großen Weichverpackung über einem ersten Andockelement, das durch eine daran angeordnete erste Klappeneinrichtung dicht verschließbar ist, Führen eines Auslaufschlauches der Weichverpackung radial innen durch eine erste ringförmige Abdichteinrichtung des ersten Andockelementes in einer Freigabestellung, so dass die erste Abdichteinrichtung nur die Außenseite des Auslaufschlauches berührt, Stülpen des Auslaufschlauches radial außen über einen Verbindungsstutzen des ersten Andockelementes, so dass der Verbindungsstutzen nur mit der Innenseite des Auslaufschlauches in Berührung kommt, Hineinfahren der ersten Abdichteinrichtung in eine Betriebsstellung innerhalb des Verbindungsstutzens, so dass sich der Auslaufschlauch S-förmig um die erste Abdichteinrichtung und den Rand des Verbindungsstutzens legt, und Expandieren der ersten Abdichteinrichtung, so dass der Auslaufschlauch mit seiner Innenseite dichtend an der Innenwandung des Verbindungsstutzens anliegt.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.
Durch die erfindungsgemäße Ausbildung des Verfahrens ist es erstmals möglich, einen herkömmlichen Big-Bag mit einem dicht verschließbaren Andockelement, wie es beispielsweise aus
In einer bevorzugten Ausführungsform ist das Verfahren dadurch gekennzeichnet, dass der Schritt des Hineinfahrens der ersten Abdichteinrichtung in den Verbindungsstutzen so weit erfolgt, bis eine zweite Abdichteinrichtung den Auslaufschlauch radial außen umfasst und axial stirnseitig an dem Verbindungsstutzen dichtend zur Anlage gebracht hat.In a preferred embodiment, 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.
Durch diese erfindungsgemäße Ausbildung des Verfahrens ist zum einen eine zweifelsfreie Positionierung der ersten Abdichteinrichtung über das Prinzip eines Anschlags gesichert und kann daher auch von Hilfskräften zuverlässig durchgeführt oder auch automatisiert werden. Weiterhin wird dadurch eine zweite Dichtfläche bereitgestellt, die der Dichtfläche der ersten Abdichteinrichtung nachgeordnet ist und noch eine zuverlässige Abdichtung gegenüber der Umwelt sicherstellt, wenn die erste Abdichteinrichtung versagen sollte. Aufgrund der Anordnung der zweiten Abdichteinrichtung ist dann immer noch der erfindungsgemäße Vorteil gegeben, dass sich keine Taschen oder Toträume bilden können, in denen sich Pulverreste sammeln könnten, die nach dem Lösen der Verbindung zwischen dem Auslaufschlauch des Big-Bags und erstem Andockelement in die Umwelt emittieren könnten.By means of this embodiment of the method according to the invention, on the one hand 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. Furthermore, 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.
In einer zweckmäßigen Ausführungsform des erfindungsgemäßen Verfahrens erfolgt das Expandieren der ersten Abdichteinrichtung durch Aufblähen mit Druckluft oder einem Inertgas. Durch Verwendung eines Druckgases zur Erzeugung der Abdichtkräfte wird die Gefahr einer Beschädigung des Auslaufschlauches minimiert, da keine lokalen Kraftspitzen oder scharfkantigen Teile auf den Auslaufschlauch einwirken. Geeignete Druckluftquellen stehen üblicherweise in jedem Gewerbebetrieb zur Verfügung. In besonderen Fällen kann auch ein Inertgas verwendet werden, wenn beispielsweise das umzufüllende Pulver besonders oxidationsempfindlich sein sollte.In an expedient embodiment of the method according to the invention, the expansion of the first sealing device takes place by inflation with compressed air or an inert gas. By using a pressurized gas to produce the sealing forces, the risk of damaging the discharge hose is minimized since no local force peaks or sharp-edged parts act on the discharge hose. Suitable compressed air sources are usually available in every commercial enterprise. In special cases, an inert gas may also be used if, for example, the powder to be replicated should be particularly susceptible to oxidation.
In einer besonders zweckmäßigen Ausführungsform umfasst das erfindungsgemäße Verfahren ferner den Schritt des Andockens an einem zweiten Andockelement, das durch eine daran angeordnete zu der ersten Klappeneinrichtung komplementäre Klappeneinrichtung dicht verschließbar ist, zum wenigstens teilweisen Entleeren der Weichverpackung, wobei die Klappeneinrichtungen das erste und zweite Andockelement während des Schrittes des Andockens dicht verschließen.In a particularly expedient embodiment, 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.
Ein solches zweites Andockelement kann beispielsweise mit einem pneumatischen Fördersystem oder einer ähnlichen Einrichtung zum Wegfördern des aus dem Big-Bag entnommenen Pulvers verbunden sein. Ist das zweite Andockelement mit einer Abdichteinrichtung komplementär zu der des ersten Andockelements versehen, wie beispielsweise in
In einer weiteren zweckmäßigen Ausführungsform des erfindungsgemäßen Verfahrens umfasst dieses das Abbinden des Auslaufschlauches nach dem wenigstens teilweise Entleeren der Weichverpackung. Damit wird der wesentliche Teil des mit dem in der Weichverpackung enthaltenen Pulvers kontaminierten Innenteils der Weichverpackung zuverlässig von der Umgebung abgeschottet, so dass im übrigen nur für eine geringe Menge an Restkontamination eine Exposition an die Umgebung zu verhindern ist.In a further expedient embodiment of the method according to the invention, this comprises the setting of the outlet tube after the at least partial emptying of the soft packaging. As a result, the essential part of the inner part of the soft packaging contaminated with the powder contained in the soft packaging is reliably sealed off from the environment, so that, moreover, exposure to the environment is to be prevented only for a small amount of residual contamination.
Besonders zweckmäßig ist es bei einem solchen Verfahren, wenn die Innenseite des Auslaufschlauches von seinem offenen Ende bis zur Abbindung sowie die Innenseite des Verbindungsstutzens von anhaftenden Inhaltsresten gereinigt wird. Dadurch kann eine Emission von Inhaltsresten in die Umgebung vermieden werden. Damit kann ein Big-Bag als Teil eines staubdichten Entleerungssystems im Rahmen eines "geschlossenen Systems" gemäß deutschem Chemikaliengesetz eingesetzt werden. Die sonst erforderlichen Zusatzkosten für Spezialpackmittel, Schutzausrüstung für Bediener etc. können eingespart sowie die Vorteile eines Big-Bags als Einwegverpackung genutzt werden. Weiterhin ist eine Gesundheitsgefährdung für Bediener einer Umfüllanlage unter normalen Betriebsbedingungen praktisch ausgeschlossen.It is particularly useful in such a method, when the inside of the outlet hose is cleaned from its open end to the setting and the inside of the connecting piece of adhering contents residues. As a result, an emission of residual contents in the environment can be avoided. This allows a big-bag to be used as part of a dust-tight emptying system as part of a "closed system" in accordance with the German Chemicals Act. The otherwise required additional costs for special packaging, protective equipment for operators, etc. can be saved and the advantages of a big-bag can be used as disposable packaging. Furthermore, a health hazard for operators of a transfer plant under normal operating conditions is practically excluded.
Besonders bevorzugt ist es, wenn vor dem Reinigungsschritt das erste Andockelement von dem zweiten Andockelement getrennt und mit einem dritten Andockelement gekoppelt wird, wobei dieses Andockelement ebenfalls als Abdichteinrichtung eine komplementäre Klappeneinrichtung umfasst, wie sie beispielsweise aus
Insbesondere, wenn toxische oder reaktive Pulver in einem solchen Big-Bag transportiert wurden, ist es vorteilhaft, wenn nach dem Abbinden des Auslaufschlauches und dem Reinigungsschritt die erste Abdichteinrichtung wieder in die Freigabestellung gefahren und die Weichverpackung von dem ersten Andockelement getrennt und einer Weiterbehandlung oder Entsorgung zugeführt wird, beispielsweise einer Sondermüllverbrennung.In particular, when toxic or reactive powders have been transported in such a big bag, it is advantageous if after setting the outlet hose and the cleaning step, 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.
Die erfindungsgemäße Vorrichtung zur staubemissionsarmen Entleerung von großen Weichverpackungen, insbesondere FIBC oder Big-Bags, weist ein erstes Andockelement auf, das durch eine daran angeordnete erste Klappeneinrichtung dicht verschließbar ist, einen Verbindungsstutzen zur Verbindung eines Auslaufschlauches der Weichverpackung mit dem durch die Klappeneinrichtung dicht verschließbaren ersten Andockelement, und eine erste ringförmige Abdichteinrichtung, die aus einer Freigabestellung in eine Betriebsstellung verfahrbar ist, wobei sich die erste Abdichteinrichtung in der Betriebsstellung innerhalb des Verbindungsstutzens befindet, um Teile der Innenseite des Auslaufschlauches der Weichverpackung mit der Innenseite des Verbindungsstutzens dichtend aneinander zu drücken.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.
In einer bevorzugten Ausführungsform ist die erfindungsgemäße Vorrichtung dadurch gekennzeichnet, dass die erste Abdichteinrichtung zum Herstellen der dichten Verbindung von Auslaufschlauch und Verbindungsstutzen elastisch expandierbar ist, insbesondere, dass die erste Abdichteinrichtung durch Aufblasen expandierbar ist.In a preferred embodiment, 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.
In einer besonders zweckmäßigen Ausführungsform ist eine zweite Abdichteinrichtung vorgesehen, die einen Dichtring umfasst, der an einer Einrichtung zum Verfahren der ersten Abdichteinrichtung befestigt ist und einen größeren Durchmesser aufweist, als die erste Abdichteinrichtung, und der Dichtring auf seiner der ersten Abdichteinrichtung zugewandten axialen Stirnseite einen elastischen Belag aufweist, mit dem ein Abschnitt der Innenseite des Auslaufschlauches dichtend gegen eine axiale Stirnseite des Verbindungsstutzens drückbar ist.In a particularly expedient embodiment, a second sealing device is provided, 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.
Dabei ist es besonders zweckmäßig, wenn die erste und die zweite Abdichteinrichtung an einer Einrichtung zum Verfahren der ersten und zweiten Abdichteinrichtung aus der Freigabestellung in die Betriebsstellung in einem festen Abstand voneinander angeordnet sind, insbesondere, wenn die Betriebsstellung durch die Anlage der zweiten Abdichteinrichtung an der Stirnseite des Verbindungsstutzens definiert ist.It is particularly expedient if the 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.
In einer besonders bevorzugten Ausführungsform ist die erfindungsgemäße Vorrichtung gekennzeichnet durch ein zweites dicht verschließbares Andockelement, das durch eine daran angeordnete zu der ersten Klappeneinrichtung komplementäre weitere Klappeneinrichtung dicht verschließbar ist und das mit dem ersten Andockelement koppelbar ist zum Entleeren der Weichverpackung, sowie ein drittes dicht verschließbares Andockelement, das ebenfalls durch eine zu der ersten Klappeneinrichtung komplementäre weitere Klappeneinrichtung dicht verschließbar und an das das erste Andockelement koppelbar ist, wobei in einem durch die weitere Klappeneinrichtung oder dergleichen dicht verschließbaren Innenraum des dritten Andockelements ein Reinigungskopf angeordnet ist und der Reinigungskopf aus einer Ruhestellung in dem dritten Andockelement in eine Reinigungsstellung bewegbar ist, so dass sich wenigstens ein Reinigungsmittelauslass innerhalb des ersten Andockelements befindet.In a particularly preferred embodiment, 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.
Eine besonders kompakte Bauform sowie verringerte Kosten für den Aufbau einer erfindungsgemäßen Vorrichtung können erhalten werden, wenn die Vorrichtung gekennzeichnet ist durch ein zweites dicht verschließbares Andockelement, das durch eine daran angeordnete zu der ersten Klappeneinrichtung komplementäre weitere Klappeneinrichtung dicht verschließbar ist und das mit dem ersten Andockelement koppelbar ist zum Entleeren der Weichverpackung, wobei in dem durch die weitere Klappeneinrichtung oder dergleichen dicht verschließbaren Innenraum des zweiten Andockelements ein Reinigungskopf angeordnet ist und der Reinigungskopf aus einer Ruhestellung in dem zweiten Andockelement in eine Reinigungsstellung bewegbar ist, so dass sich wenigstens ein Reinigungsmittelauslass innerhalb des ersten Andockelements befindet.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 Reinigungsmittelauslass within the first docking element.
Die Erfindung soll im folgenden anhand von in den Zeichnungen dargestellten Ausführungsbeispielen näher erläutert werden. Es zeigen:
Figuren 1bis 8- die Schritte eines bevorzugten erfindungsgemäßen Verfahrens unter Verwendung von erfindungsgemäßen Vorrichtungen, jeweils teilweise aufgeschnitten;
Figur 9- eine weitere erfindungsgemäße Ausgestaltung der Vorrichtung aus
Figur 5 , im Teilschnitt; Figur 10- eine Draufsicht auf eine Entleerungsstation zur Durchführung des erfindungsgemäßen Verfahrens mit Darstellung eines Teils einer erfindungsgemäßen Vorrichtung;
Figur 11- eine Detailansicht eines Abschnittes eines Auslaufschlauches und des ersten Andockelementes gemäß einer bevorzugten Ausführungsform der vorliegenden Erfindung im Teilschnitt; und
Figur 12- eine Übersichtsdarstellung aller Schritte des erfindungsgemäßen Verfahrens.
- FIGS. 1 to 8
- the steps of a preferred method according to the invention using devices according to the invention, each partially cut open;
- FIG. 9
- a further embodiment of the invention from the device
FIG. 5 , in partial section; - FIG. 10
- a plan view of a discharge station for carrying out the method according to the invention with a representation of a part of a device according to the invention;
- FIG. 11
- a detailed view of a portion of an outlet hose and the first docking element according to a preferred embodiment of the present invention in partial section; and
- FIG. 12
- an overview of all the steps of the method according to the invention.
In
In einem ersten Schritt zur Vorbereitung der Entleerung des Big-Bags wird die Verschweißung 5 des Auslaufschlauches 4 abgeschnitten.In a first step to prepare the emptying of the big bag, the
Anschließend wird der Big-Bag 1 über einem ersten Andockelement 12 positioniert, wie in
Der festgelegte Abstand zwischen Blähmanschette 18 und Ringscheibe 19 ist dabei entsprechend der gewünschten Eintauchtiefe der ersten Abdichteinrichtung in den Verbindungsstutzen 14 gewählt. Die Ringscheibe 19 mit ihrem Belag 20 dient also auch als Anschlag beim Hineinfahren der Blähmanschette 18 in den Verbindungsstutzen 14.The fixed distance between the blowing
Am den Kragarmen 17 mit Blähmanschette 18 und Ringscheibe 19 gegenüberliegenden unteren Ende des Verbindungsstutzens 14 ist eine den Verbindungsstutzen 14 nach unten dicht verschließende Klappe 22 angebracht. Dabei handelt es sich um einen Teil einer Klappenanordnung der Art, wie sie beispielsweise aus der
Anschließend wird die Blähmanschette 18 in den Verbindungsstutzen 14 hineingefahren, so dass sich der Auslaufschlauch 4 annähernd 180° um die Blähmanschette 18 legt. Dazu wird der Abstand zwischen oberem Rahmen 15 und unterem Rahmen 13 so weit verringert, bis der elastische Belag 20 der Ringscheibe 19 auf dem oberen Rand 21 des Verbindungsstutzens 14 aufliegt. Dadurch wird bereits der Auslaufschlauch 4 dichtend gegen den Rand 21 des Verbindungsstutzens 14 gedrückt. Zugleich ist dadurch die maximale Einstecktiefe für die Blähmanschette 18 in dem Verbindungsstutzen 14 und damit seine Betriebsstellung festgelegt. Durch das Eintauchen der Blähmanschette 18 in die sich bildende Schlaufe wird der zwischen Blähmanschette 18 und Ringscheibe 19 befindliche Teil des Auslaufschlauches 4 gestrafft und dadurch eine Faltenbildung vermieden. Nunmehr kann die Blähmanschette 18 durch Aufblähen mit Druckluft radial vergrößert werden und damit den Auslaufschlauch 4 radial dichtend gegen die Innenseite des Verbindungsstutzens 14 drücken. Die Verbindung zwischen Auslaufschlauch 14 und Verbindungsstutzen 14 ist nun zweifach abgedichtet. (
Nachfolgend wird der Big-Bag 1 mit daran dicht angebrachtem ersten Andockelement 12 mit Hilfe des Laufkranes 10 über einem zweiten Andockelement 23 positioniert (
Am Ende des Entleerungsvorgangs wird der Auslaufschlauch 4 des Big-Bags 1 abgebunden und nach Entnahme der Restmengen aus dem Verbindungsstutzen 14 werden die Klappen 22 und 25 geschlossen. Nun kann der Big-Bag 1 mit dem ersten Andockelement 12 von dem zweiten Andockelement 23 getrennt werden, ohne das mit nennenswerter Exposition von Pulverresten an die Umgebung zu rechnen ist.At the end of the emptying process, the
Der Big-Bag 1 mit dem ersten Andockelement 12 kann jetzt mit Hilfe des Laufkranes 10 über dem dritten Andockelement 24 positioniert und zum Andocken auf dieses abgesenkt werden (
Die Blähmanschette 18 kann nun entlüftet und in die Freigabestellung gefahren werden, so dass der Auslaufschlauch 4 aus dem ersten Andockelement herausgezogen werden kann. Der Big-Bag 1 kann nun einer sachgerechten Entsorgung oder Aufbereitung zugeführt werden (
Für einen besonders kompakten Aufbau oder verringerte Erstellungskosten, beispielsweise wenn die erfindungsgemäße Vorrichtung nur gelegentlich verwendet werden wird, kann eine separate Reinigungsstation 32 entfallen und der Reinigungskopf 28 in das zweite Andockelement 23 integriert sein. Insbesondere wenn die Vorrichtung nicht ständig benötigt wird, kann die Vorrichtung so besonders kompakt bauend ausgeführt werden und verursacht geringere Erstellungskosten. Allerdings muss dazu z.B. durch geeignete Ventileinrichtungen sichergestellt werden, dass keine Reinigungsmittelreste in den Produktstrom gelangen.For a particularly compact design or reduced production costs, for example if the device according to the invention will only be used occasionally, a
Nun kann der Reinigungskopf 28 in seine Reinigungsstellung verfahren werden und die Innenseite von erstem Andockelement 12 und Auslaufschlauch 4 von Inhaltsresten gereinigt werden, wie bei K gezeigt. Nach erfolgter Reinigung werden die Klappen 22 und 25 geschlossen, das erste Andockelement 12 von dem dritten Andockelement 24 getrennt und der Big-Bag 1 von dem ersten Andockelement 12 gelöst, wie bei L gezeigt. Der Big-Bag 1 kann nun entsorgt oder weiterverwendet werden und ein neuer gefüllter Big-Bag 1 kann mit dem ersten Andockelement verbunden werden, wie bei A und B gezeigt.Now, the cleaning
Insgesamt wird zur Verringerung von Emissionen auch nach Abschluss eines Umfüllvorganges ein Verfahren mit folgenden Schritten vorgeschlagen: Positionieren einer großen Weichverpackung 1 über einem Andockelement 12, das durch eine daran angeordnete Klappeneinrichtung 22 verschließbar ist, Führen eines Auslaufschlauches 4 der Weichverpackung 1 durch eine Abdichteinrichtung 18 des Andockelementes 12 in einer Freigabestellung, so dass die Abdichteinrichtung 18 die Außenseite des Auslaufschlauches 4 berührt, Hineinfahren der Abdichteinrichtung 18 in eine Betriebsstellung innerhalb des Verbindungsstutzens 14, und Expandieren der Abdichteinrichtung 18, so dass der Auslaufschlauch 4 mit seiner Innenseite dichtend an der Innenwandung des Verbindungsstutzens 14 anliegt, sowie eine Vorrichtung mit einem Andockelement 12, das durch eine daran angeordnete Klappeneinrichtung 22 dicht verschließbar ist, einem Verbindungsstutzen 14 zur Verbindung eines Auslaufschlauches 4 der Weichverpackung 1 mit dem durch die Klappeneinrichtung 22 dicht verschließbaren Andockelement 12, mit einer Abdichteinrichtung 18, die aus einer Freigabestellung in eine Betriebsstellung verfahrbar ist, wobei sich die Abdichteinrichtung 18 in der Betriebsstellung innerhalb des Verbindungsstutzens 14 befindet, um Teile der Innenseite des Auslaufschlauches 4 der Weichverpackung 1 mit der Innenseite des Verbindungsstutzens 14 dichtend aneinander zu drücken.Overall, in order to reduce emissions, a method comprising the following steps is proposed even after completion of a transfer process: Positioning a large
Claims (17)
- A method for the low dust-emission emptying of free-flowing powder or similar from large flexible packages, in particular FIBCs or big bags, characterised by the following steps:positioning a large flexible package (1) above a first docking element (12), which can be tightly sealed by a first valve device (22) arranged thereon, guiding a discharge tube (4) of the flexible package (1) radially through the inside of a first ring-shaped sealing device (18) of the first docking element (12) in a release position in such a way that the first sealing device (18) touches only the outside of the discharge tube (4), placing the discharge tube (4) radially over the outside of a connecting piece (14) of the first docking element (12) so that the connecting piece (14) comes into contact only with the inside of the discharge tube (4), introducing the first sealing device (18) into an operating position within the connecting piece (14) so that the discharge tube (4) lies in an S shape around the first sealing device (18) and the edge (21) of the connecting piece (14), and expanding the first sealing device (18) so that the inside of the discharge tube (4) contacts the internal wall of the connecting piece (14) forming a seal.
- The method according to claim 1, characterised in that the step of introducing the first sealing device (18) into the connecting piece (14) takes place until a second sealing device (19, 20) surrounds the outside of the discharge tube (4) radially and has brought it axially into a position forming a seal against the connecting piece (14) at the front.
- The method according to one of the preceding claims, characterised in that the expanding of the first sealing device (18) takes place by inflating with compressed air or an inert gas.
- The method according to one of the preceding claims, characterised in that the method further comprises the step of docking to a second docking element (23), which can be tightly sealed by a valve device (25) arranged thereon, which is complementary to the first valve device (22), and at least partially emptying the flexible package (1), wherein the valve devices (22, 25) tightly seal the first and second docking elements (12, 23) during the docking step.
- The method according to claim 4, characterised in that after the at least partial emptying of the flexible package (1) the discharge tube (4) is tied off.
- The method according to claim 5, characterised in that the inside of the discharge tube (4) is cleaned of adhering residual contents from its open end up to the tie-off point together with the inside of the connecting piece (14).
- The method according to claim 6, characterised in that before the cleaning step the first docking element (12) is separated from the second docking element (23) and connected to a third docking element (24), which can also be tightly sealed by a further valve device (25) which is complementary to the valve device (22), wherein the valve devices (22, 25) tightly seal the first and second docking elements (12, 23) during the separation step and the valve devices (22, 25) tightly seal the first and third docking elements (12, 24) during the docking step.
- The method according to one of claims 6 or 7, characterised in that the cleaning step comprises a wet cleaning and a subsequent drying.
- The method according to one of claims 5 to 8, characterised in that, after the tying off of the discharge tube (4) and the cleaning step, the first sealing device (18) is again brought into the release position and the flexible package (1) is separated from the first docking element (18) and fed onwards for further treatment or disposal.
- A device for the low dust-emission emptying of large flexible packages, in particular FIBCs or big bags, with a first docking element (12), which can be tightly sealed by a first valve device (22) arranged thereon, a connecting piece (14) for connecting a discharge tube (4) of the flexible package (1) to the first docking element (12) which can be tightly sealed by the valve device (22), and with a first ring-shaped sealing device (18), which can be transferred from a release position into an operating position, wherein the first sealing device (18) is located in the operating position inside the connecting piece (14) in order to press parts of the inside of the discharge tube (4) of the flexible package (1) with the inside of the connecting piece (14) so as to form a seal together.
- The device according to claim 10, characterised in that the first sealing device (18) can be expanded elastically to form the tight connection between the discharge tube (4) and connecting piece (14).
- The device according to claim 10 or 11, characterised in that the first sealing device (18) can be expanded by inflating.
- The device according to one of claims 10 to 12, characterised in that a second sealing device is provided which comprises a sealing ring (19) which is attached to a device (17) for moving the first sealing device (18) and has a larger diameter than the first sealing device (18), and the sealing ring (19) has an elastic coating (20) on its axial face facing the first sealing device (18) with which a section of the inside of the discharge tube (4) can be pressed to form a seal against an axial face of the connecting piece (14).
- The device according to claim 13, characterised in that the first (18) and the second (19, 20) sealing devices are arranged on a device (13, 15, 17) for moving the first (18) and second sealing devices (19, 20) from the release position into the operating position at a fixed distance apart.
- The device according to claim 14, characterised in that the operating position is defined by the second sealing device (19, 20) being in contact with the face (21) of the connecting piece (14).
- The device according to one of claims 10 to 15, characterised by a second tightly sealable docking element (23), which can be tightly sealed by a further valve device (25) arranged thereon which is complementary to the first valve device (22) and which can be connected to the first docking element (12) for emptying the flexible package (1), as well as a third tightly sealable docking element (24), which can also be tightly sealed by a further valve device (25) which is complementary to the first valve device (22) and which can be connected to the first docking element (12), wherein in an internal space of the third docking element (24), which can be tightly sealed by the further valve device (25) or the like, a cleaning head (28) is arranged and the cleaning head (28) can be moved from a position of rest in the third docking element (24) into a cleaning position, so that at least one cleaning agent outlet (29) is located within the first docking element (12).
- A device according to one of claims 10 to 15, characterised by a second tightly sealable docking element (23), which can be tightly sealed by a further valve device (25) arranged thereon which is complementary to the first valve device (22) and which can be connected to the first docking element (12) for emptying the flexible package (1), wherein in the internal space of the second docking element (23), which can be tightly sealed by the further valve device (25) or the like, a cleansing head (28) is arranged and the cleaning head (28) can be moved from a position of rest in the second docking element (23) into a cleaning position, so that at least one cleaning agent outlet (29) is located within the first docking element (12).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE102005021368A DE102005021368A1 (en) | 2005-05-04 | 2005-05-04 | Method and device for low-emission emptying of ingredients from large soft packaging |
PCT/EP2006/004189 WO2006117224A1 (en) | 2005-05-04 | 2006-05-04 | Method and device for the low-emission emptying of contents from large soft packagings |
Publications (2)
Publication Number | Publication Date |
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EP1890940A1 EP1890940A1 (en) | 2008-02-27 |
EP1890940B1 true EP1890940B1 (en) | 2010-12-15 |
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Application Number | Title | Priority Date | Filing Date |
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EP06724717A Not-in-force EP1890940B1 (en) | 2005-05-04 | 2006-05-04 | Method and device for the low-emission emptying of contents from large soft packagings |
Country Status (4)
Country | Link |
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EP (1) | EP1890940B1 (en) |
AT (1) | ATE491643T1 (en) |
DE (2) | DE102005021368A1 (en) |
WO (1) | WO2006117224A1 (en) |
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DE29915973U1 (en) * | 1999-09-10 | 2001-01-25 | Gei Gmbh | Device for coupling two containers with a flexible flap seal |
CA2304916A1 (en) * | 2000-04-07 | 2001-10-07 | Control And Metering Limited | Material discharge apparatus |
DE20014872U1 (en) * | 2000-08-28 | 2001-01-25 | Gea Powder Technology Gmbh | Device for coupling two storage and / or conveying means with a cleaning device |
DE20105740U1 (en) * | 2001-04-02 | 2001-06-28 | Novindustra Ag Sissach | Sack connection device |
DE10223220B3 (en) * | 2002-05-24 | 2004-02-26 | Hecht Anlagenbau Gmbh | Device for filling a container equipped with an inner bag with a bulk material |
US6923340B2 (en) * | 2003-02-27 | 2005-08-02 | The Young Industries, Inc. | System and method for storing, transporting and dispensing bulk particulate materials and dispensing apparatus therefor |
CA2541106A1 (en) * | 2003-10-10 | 2005-05-06 | Ciba Speciality Chemicals Holding Inc. | Method and arrangement for emptying big bags |
WO2005056443A1 (en) * | 2003-12-11 | 2005-06-23 | Hecht Anlagenbau Gmbh | Method for the contamination-preventing emptying and filling of bulk containers |
-
2005
- 2005-05-04 DE DE102005021368A patent/DE102005021368A1/en not_active Ceased
-
2006
- 2006-05-04 WO PCT/EP2006/004189 patent/WO2006117224A1/en not_active Application Discontinuation
- 2006-05-04 EP EP06724717A patent/EP1890940B1/en not_active Not-in-force
- 2006-05-04 AT AT06724717T patent/ATE491643T1/en active
- 2006-05-04 DE DE502006008515T patent/DE502006008515D1/en active Active
Also Published As
Publication number | Publication date |
---|---|
ATE491643T1 (en) | 2011-01-15 |
EP1890940A1 (en) | 2008-02-27 |
DE502006008515D1 (en) | 2011-01-27 |
DE102005021368A1 (en) | 2006-11-09 |
WO2006117224A1 (en) | 2006-11-09 |
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