EP1625093B2 - Procede de vidange d'un conteneur souple renfermant un produit visqueux - Google Patents

Procede de vidange d'un conteneur souple renfermant un produit visqueux Download PDF

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Publication number
EP1625093B2
EP1625093B2 EP04707566.8A EP04707566A EP1625093B2 EP 1625093 B2 EP1625093 B2 EP 1625093B2 EP 04707566 A EP04707566 A EP 04707566A EP 1625093 B2 EP1625093 B2 EP 1625093B2
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EP
European Patent Office
Prior art keywords
container
viscous product
flexible container
optionally
piston
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.)
Expired - Lifetime
Application number
EP04707566.8A
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German (de)
English (en)
French (fr)
Other versions
EP1625093A1 (fr
EP1625093B1 (fr
Inventor
Frédéric Mauger
Julien Craplet
Frederic Jean
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Elkem Silicones France SAS
Original Assignee
Bluestar Silicones France SAS
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Priority claimed from FR0301724A external-priority patent/FR2851241B1/fr
Application filed by Bluestar Silicones France SAS filed Critical Bluestar Silicones France SAS
Priority to DE602004011209.7T priority Critical patent/DE602004011209T3/de
Publication of EP1625093A1 publication Critical patent/EP1625093A1/fr
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Publication of EP1625093B1 publication Critical patent/EP1625093B1/fr
Publication of EP1625093B2 publication Critical patent/EP1625093B2/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
    • B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
    • B67D7/02—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes for transferring liquids other than fuel or lubricants
    • B67D7/0216—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes for transferring liquids other than fuel or lubricants by squeezing collapsible or flexible storage containers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
    • B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
    • B67D7/02—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes for transferring liquids other than fuel or lubricants
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
    • B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
    • B67D7/02—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes for transferring liquids other than fuel or lubricants
    • B67D7/0227—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes for transferring liquids other than fuel or lubricants by an ejection plunger
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
    • B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
    • B67D7/02—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes for transferring liquids other than fuel or lubricants
    • B67D7/0238—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes for transferring liquids other than fuel or lubricants utilising compressed air or other gas acting directly or indirectly on liquids in storage containers
    • B67D7/0244—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes for transferring liquids other than fuel or lubricants utilising compressed air or other gas acting directly or indirectly on liquids in storage containers by using elastic expandable bags
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
    • B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
    • B67D7/02—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes for transferring liquids other than fuel or lubricants
    • B67D7/0238—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes for transferring liquids other than fuel or lubricants utilising compressed air or other gas acting directly or indirectly on liquids in storage containers
    • B67D7/0255—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes for transferring liquids other than fuel or lubricants utilising compressed air or other gas acting directly or indirectly on liquids in storage containers squeezing collapsible or flexible storage containers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
    • B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
    • B67D7/06—Details or accessories
    • B67D7/58—Arrangements of pumps
    • B67D7/62—Arrangements of pumps power operated
    • B67D7/64—Arrangements of pumps power operated of piston type
    • B67D7/645—Barrel pumps

Definitions

  • the present invention relates to a method of continuous or discontinuous emptying of viscous products contained in a flexible container, in particular of the "big bag” type, this emptying being effected by an opening provided in the lower part of the flexible container.
  • the invention also relates to a draining kit, including a device for emptying viscous products contained in flexible containers.
  • the viscous products referred to in the context of the invention are more particularly products whose viscosity is at least 10 Pa.s and preferably between 10 Pa.s and 200,000 Pa.s. viscosity being measured in a manner known per se at 25 ° C.
  • oils -1 silicone oils, silicone gums, polyorganosiloxane compositions (optionally in the form of aqueous emulsions) which can be crosslinked into elastomers by polyaddition, polycondensation or dehydrogen (poly) condensation reactions, organic polymers comprising groups reactive organosilicics (called MS polymers) and charged compositions, in a solvent or aqueous medium, comprising an acrylic polymer and crosslinkable elastomers by drying. It may be in particular silicone sealants but also other viscous polymeric products such as polyurethanes or viscous inks.
  • Such viscous products can be stored in bulk in flexible containers of the "big bag” type, before being discharged or injected into other containers or before being packaged in other packages.
  • the patent application DE-A-34 29 167 discloses a method and a device for emptying flexible containers for bulk particulate products.
  • the flexible container of "big bag” type is, on the one hand, suspended via the handles of which it is equipped, and on the other hand housed in a hopper, on which shaking is carried out by means of a rotating eccentric foot and two other spring-mounted feet.
  • This vibration-emptying device does not seem suitable for viscous products contained in flexible bags.
  • techniques are known for emptying rigid drums of viscous products using a drum press comprising a pressure plate intended to penetrate and move in a drum to pressurize the viscous product contained in a bag under pressure. fine plastic, for example polyethylene.
  • the remote technological background also includes container emptying systems consisting of a rigid cardboard box containing a thin polyethylene bag filled with viscous products.
  • the emptying of this type of container is effected by means of a pressure plate capable of expelling the viscous product out of the polyethylene bag, said viscous product then being taken up by pumps provided for this purpose, to be conveyed to downstream elements.
  • GB 2 159 583 A describes the emptying of a flexible container containing a beverage.
  • the FLUID-BAG Info 94/95 leaflet of the company OY FLUID BAG Ab describes a closed circuit lubrication system that supplies lubrication stations for the production of steel.
  • This system called FLUID-BAG includes grease containers and rollers that make possible the complete emptying of said containers.
  • one of the essential objectives of the present invention is to provide a method of emptying flexible containers for viscous products, which process must be easy to implement and economical.
  • Another essential objective of the invention is to provide a method of emptying flexible containers for viscous products and whose capacity is greater than or equal to 250 liters.
  • Another essential objective of the present invention is to provide a method of emptying flexible containers for viscous products, which is simple, inexpensive, which causes little loss of material, for example less than or equal to 1.5%, or even 0 , 8%, and that requires very little or no cleaning of the equipment used.
  • Another essential objective of the present invention is to provide a kit for emptying flexible containers, such as "big bag", for viscous products which is of simple and economical structure, which makes it possible to empty flexible bags with a capacity greater than or equal to 250 liters which is easy to use, generates very little material loss (less than or equal to 1.5%) and requires little or no cleaning.
  • Another essential objective of the invention is to provide a kit for emptying flexible containers for viscous products, in which the flexible container optimally meets the industrial requirements of transport and logistics.
  • the holding characteristic of the container or the flexible bag in the at least partially inflated state makes it possible to overcome the problem of clogging of the outlet orifice with conventional bags-liners, the problem of soiling the material and the problem of loss of material; the latter problem being at least partly solved by the technique according to the invention which allows a collapse in bellows (or "accordion") minimizing the loss of material.
  • Another advantage of the process of the invention is that it is possible to use containers whose capacity is greater than 250 liters, for example 1000 liters, which results in significant productivity gains both in terms of filling and cooling. draining viscous products.
  • One of the essential characteristics of the invention is therefore the implementation of a flexible container of the "big bag” type.
  • it is a container whose wall to be flexible does not remain less mechanically resistant and has moreover and preferably sealing properties vis-à-vis the viscous product considered.
  • This container formed by such a flexible envelope is a sufficient packaging in terms of protection of the viscous product. It is an autonomous packaging that can be transported easily, for example by simply being placed on a pallet and attached, or even included in other containers that are not involved in the emptying process, unlike bags polyethylene, which, in known manner, are housed in rigid containers for both transport and emptying.
  • the flexible envelope container used in the process according to the invention may be for example a cloth bag (eg polypropylene) lined with a thin bag, for example multilayer (polyethylene / aluminum / polyethylene terephthalate) glued and / or stitched to the canvas, said container being optionally and advantageously provided with handles for suspending and handling with a hoist or forklift.
  • These flexible containers or "big bag” can have large capacities, for example between 500 and 2000 liters.
  • the flexible envelope container can be disposable, which is a source of economy, particularly in terms of transport and storage. This allows eg to avoid complicated "supply chain" rotations of metal containers.
  • viscous products concerned by the invention mention may be made of products whose viscosity is of the order of 3000 Pa.s, such as silicone mastics.
  • the process according to the invention offers a wide range of emptying rates that can be varied depending on the viscosity of the product in question, the outlet diameter or the pressure value exerted.
  • a draining device comprising, on the one hand, at least one pressing member comprising at least one piston and, on the other hand, at least one a drain tank for receiving the flexible container to be emptied or possibly only its bag-lining and designed as a female part adapted to cooperate and serve as a guide for the piston of the presser member moving, especially in the one-way direction corresponding to the pressurization of the flexible container or possibly its only bag-lining.
  • a pressure fluid contained in an inflatable cylinder this cylinder being housed between the piston (5.1) and a reversible closure lid of the vessel. (6) and connected to pressurizing fluid supply means for inflating and subsequently displacing the piston (5.1), to allow the expulsion of the viscous product (2) out of the tank (6).
  • the fluid used in the variant of the first mode and in the second embodiment can be a gas or a liquid. It can be a liquid having a viscosity less than or equal to 50 Pa.s. Water could be perfectly suitable for this purpose.
  • the process according to the invention is operational without mechanical recovery of the viscous product at the outlet of the container, it is quite possible to envisage the feeding of mechanical elements (for example: pumps, screws, double screws) by the viscous product. expelled in cases where it would be necessary to transport a great distance or through pipes generating high pressure losses, or even to derive an economic gain.
  • the viscous drained product can be routed to storage means or packaging means.
  • the flow is advantageously the highest possible, (for example greater than 50 liters per minute for a viscous product of 1000 Pa.s) so as to provide maximum productivity, in the case of the supply of a packaging machine, it is desirable to have high instantaneous flow rates (for example, may be greater than 1 liter per minute).
  • the flow rate naturally depends on all the parameters of the Poiseuille law (viscosity, pressure difference, geometry of the outlet duct) and elements hindering the output of the viscous product: valves, filters, roughness.
  • the packaging assembly could be in particular a cartridge dispensing device for viscous products, in particular silicone sealants ("encartoucheuse”), with a flowrate adapted at least to the consumption of the packaging set.
  • encartoucheuse silicone sealants
  • the viscous product expelled from the flexible container feeds storage means and / or mechanical means for moving the viscous product to increase its flow, said mechanical means being preferably selected from the group consisting of: the pumps, the (double) -vis.
  • the method according to the invention is not limited as to the number of emptying devices and means of conditioning, storage or mechanical recovery arranged downstream.
  • the method according to the invention consists in taking advantage of the flexibility of the container containing the viscous product, by applying to the wall of this flexible container, a pressure which is almost entirely transmitted to the viscous product, so that the container is maintained in a container. at least partially inflated state and the viscous product is expelled.
  • This expulsion of the viscous, continuous or discontinuous product is effected by an opening in the flexible container (for example by cutting, unscrewing a cap, by a discharge chute), or by one or more openings provided in the means or the associated elements downstream of the emptying device.
  • the inflated state of the flexible container which results from the pressure exerted on only part of its surface makes it possible to maintain a permanent tension of the wall of the container and thus eliminates the risk of an uncontrolled folding likely to result in clogging of the container. opening by which is evacuated the viscous product.
  • the pressure exerted is, for example, between 1 and 6 bars in the case of direct discharge, while it is adjusted so that the output flow rate of the viscous product is greater than or equal to the consumption of the means of the elements arranged downstream of the device. emptying.
  • the flexible container and any remaining viscous product it contains is routed to a storage site.
  • This optional operation is fast enough so that it is possible to empty a new viscous product that is incompatible with the previous one after a period of not more than ten minutes, for example, from the end of the emptying of the product. previous to the beginning of the next product drain.
  • the flexible container has a mechanically resistant and watertight wall made from fabric (s) whose weight in the uncoated state is in the range of 100 to 300 g / m 2 and that the bag-liner has a thickness in the range of 5 to 500 microns.
  • it may be polypropylene fabric with a density of 150-300 g / m 2 for a 1000 liter container.
  • the bag-lining is for example glued or sewn inside or outside the mechanically resistant wall.
  • This bag-lining end can have a thickness of between 10 and 250 microns. It should be noted that the fabric thicknesses of the wall and the liner-bag are a function of the desired mechanical strength and physicochemical protection.
  • the flexible container is provided with one or more discharge chutes, identical or different structure to that of the flexible container.
  • each chute optionally provided on the flexible container may be used for emptying or filling said container and may also act as a shutter of an opening for example by means of a plug or a knotted link.
  • This plug could consist of a weld and / or a glue joint.
  • Each possible chute may furthermore constitute a connection element of the flexible container to a downstream mechanical recovery or conditioning storage means.
  • the flexible container comprises at least one large opening or so-called “total" opening facilitating the filling.
  • This large opening may be closed by welding and / or by a knot and / or by an adhesive joint. It is preferable that such a large opening is used only for filling, unlike the openings and / or drain channels as described above.
  • the emptying device in accordance with the invention, to comprise an inflatable cylinder, housed between the piston and a reversible closure lid of the tank and connected to means for supplying fuel. pressurizing fluid allowing the inflation and consequently the displacement of the piston, to allow the expulsion of the viscous product out of the tank.
  • the pressurizing-fluid supply means comprise at least one pressurizing fluid reservoir, at least one pressurizing fluid conveying means and a conduit equipped with these means and connecting the pressure-fluid reservoir to the inflatable cylinder.
  • the pressure-fluid is e.g. selected from the group of incompressible fluids, preferably in the subgroup comprising water or oil or in the group of compressible fluids, air being preferred.
  • the emptying device comprises at least one emptying tank intended to receive the flexible container to be emptied or possibly its only bag-lining and suitable for being pressurized by means of a pressurizing fluid, to expel the viscous product out of the tank.
  • the partial pressure exerted on the flexible container results (respectively indirectly and directly) from a pressing fluid consisting of any liquid or gaseous fluid, advantageously liquid, of viscosity less than 50 Pa.s.
  • a pressing fluid consisting of any liquid or gaseous fluid, advantageously liquid, of viscosity less than 50 Pa.s.
  • the drain tank is designed as an autoclave provided with at least one opening that can be open or closed and used to introduce and / or evacuate the pressure fluid.
  • this autoclave drain tank also includes at least one drain opening for the viscous product.
  • a drain tank comprises the device according to the invention
  • the dimensions of the flexible container and possibly of its bag-lining taken alone are chosen so that when pressurized, the container is maintained in the inflated or partially inflated state. Only the flexible container and / or its bag-lining are thus kept under tension, which limits the risk of unwanted refolding leading to clogging of the drain or openings.
  • the drain tank and the flexible container and / or the bag-liner have substantially the same shape, it is preferable that the dimensions of the flexible container and / or bag-lining are smaller in a proportion of 2 to 15% than those of the tank.
  • the flexible container and / or its bag-lining has no surface irregularity in the substantially vertical direction (for example vertical seam or vertical blister or vertical asperities) on at least part of their height so that the contact of the flexible container and / or bag-lining with the inner face of the drain tank creates a substantially ring-shaped contiguous area barrier to viscous products.
  • This makes it possible to avoid the migration of the viscous product between the inner face of the tank and the upper part of the wall of the flexible container and / or bag-lining during the emptying, so that the inside of the tank is not not substantially soiled by the viscous product.
  • the figure 1 shows a viscous product emptying kit (viscosity ⁇ at 50 Pa.s: for example 3000 Pa.s silicone sealant) comprising a viscous product 1 emptying device 2, included in a flexible container 3.
  • a viscous product emptying kit viscosity ⁇ at 50 Pa.s: for example 3000 Pa.s silicone sealant
  • the emptying device 1 comprises a structure or frame 4 on which is fixed a jack 5 comprising a piston 5.1 and a cylinder body 5.2.
  • the latter serves to actuate the pressure piston 5.1.
  • the latter has a maximum outside diameter slightly smaller than the minimum inside diameter of the tank (lower by 0.1 to 2.5%).
  • the emptying tank 6 equipped with rollers 7 constitutes another element of the emptying device 1.
  • the flexible container 3 is housed inside the emptying tank 6.
  • This flexible container 3 has a drain opening 9 formed in its lower part and disposed facing the outlet duct 8 of the drain tank 6. This opening 9 is performed just before pressurization by the pressing member -5, 5.1, 5.2- and after having transported the flexible container 3 of its storage and / or transport site to the emptying site defined by the emptying tank 6.
  • O-ring 11 The seal between the piston head 5.1 (pressure member) and the internal face of the drain tank 6 is provided by an O-ring 11 which forms a barrier to the migration of the viscous product 2 above the piston head 5.1.
  • O-ring 11 has, for example, a cross-section of a diameter equal to 50 mm, plus or minus 20 mm, and its length is equal to the perimeter of the inside of drain tank 6, so that by acting on compressibility of the material constituting the O-ring 11, preferably made of elastomeric material, the continuity of this O-ring 11 is ensured. It is housed in the space delimited by an annular zone of the internal face of the cylindrical emptying tank 6 and by the Chamfered face of piston 5.1 (chamfer at 45 °). This chamfer is used to exert an oblique force on the elastomer ring 11 so that it is perfectly pressed against the inner face of the tank to ensure a good seal.
  • the transport of the flexible container from its storage site to the emptying site can be achieved for example by means of a forklift or a mobile hoist.
  • the flexible container has for example one or more resistant handles allowing it to be lifted by the means of transport.
  • the outlet duct 8 could be arranged on the piston head 5.1.
  • This outlet duct 8 allows the viscous fluid to be expelled from the emptying tank 2.2 because of the pressure difference between the inside of the flexible container 3 and the external pressure.
  • the diameter of this outlet duct is for example 76 mm.
  • This outlet duct 8 may comprise a hose for transporting the viscous product 2 to storage conditioning or mechanical recovery means arranged downstream.
  • this hose is removable so that it can be changed for each drained product.
  • outlet orifices could be provided for distributing the viscous product 2 over a plurality of storage conditioning or mechanical recovery means.
  • the receiver downstream of the outlet / flexible conduit 8 for example a packaging machine (eg a stamper), a recovery pump, a mixing screw, a container under particular pressure or at atmospheric pressure), and according to the dimensions of the elements of the downstream receiver traversed, a certain pressure is available at the outlet 8. This pressure is less than or equal to that to which the viscous product 2 is subjected in the flexible container 3.
  • the pressurization assembly 5 (piston 5.1 and cylinder 5.2), it is possible to impose on the flexible container, a pressure that is greater as the product 2 is viscous (for example up to 6.5 bars without technical difficulties) and that the required flow is high.
  • the method according to the invention controls the deformation of the flexible container during emptying, so that the container does not tear, folds optimally without plugging the outlet orifice 9.
  • the volume flow rates are measured at from the mass passed in a given time and the density of the viscous product 2.
  • the figure 2 shows a device similar to that of the figure 1 as described above, wherein the pressurizing fluid for carrying out the pressurization is contained in a flexible inflatable jack 12 housed in the drain tank 60, between a piston separating plate 5.10 and a cover 13.
  • the latter can be reversibly fixed to the top of the emptying tank 60 by means of reversible joining means 14 represented symbolically on the figure 2 .
  • These means 14 are for example bolts.
  • the inflatable jack 12 inflatable can be for example of the type marketed by the company PRONAL.
  • the emptying tank 60 may be for example a stainless steel tank with a capacity of e.g. 1000 liters.
  • the emptying tank 60 contains in its lower part a flexible container 30 of viscous products 2.
  • the bottom of the flexible container has a drain opening 90 In the same way as for the embodiment according to the figure 1 this drain opening 90 is formed in the flexible container 30 just before pressurization using the inflatable flexible cylinder 12.
  • An elastomeric seal 110 is interposed between the separation plate / piston 5.10.
  • This elastomer seal 110 is an O-ring which plays the same role as that referenced 11 in the figure 1 described above. The sealing on either side of the piston plate 5.10 is thus provided vis-à-vis the viscous product 2 contained in the flexible container 30.
  • the flexible inflatable cylinder 12 is connected to a pressure fluid reservoir 16, by the intermediate of a pipe 17, equipped with routing means 17.
  • the pressure fluid may be an incompressible fluid, namely a liquid such as water or oil, or a compressible fluid such as air.
  • the means 17 for conveying the fluid contained in the reservoir 15 to the flexible inflatable cylinder 12 via the pipe 16 are constituted for example by a suitable pump. Since the pressure fluid is formed by compressed air, said conveying means 17 correspond to a compressed air circuit comprising all the suitable components known in themselves (valve, valve ).
  • the pressure fluid is an incompressible fluid of the oil or water type. It is then advantageous to provide, in the flexible inflatable cylinder 12, a cushion filled with compressible gas (for example air). Such a cushion behaves as a buffer to smooth the flow of the fluid and to limit or eliminate the flow latency of the viscous product at the opening of the drain tank.
  • a cushion filled with compressible gas for example air
  • Another advantage offered by this variant of the figure 2 is related to the ease and speed of assembly and disassembly of such a device.
  • the lid 13, or even the drain tank 60 is equipped with a safety valve for the evacuation of air overpressures.
  • the device of the figure 2 is for example disposed upstream of the viscous product conditioning means, for example in cartridges.
  • the device implemented is the one represented at figure 1 and described above. More precisely, in this example, use is made of a bowl press intended for emptying viscous products contained in tanks of diameter up to 1240 mm, said tanks being resistant to the working pressure.
  • This press has a steel structure, the structure maintains a cylinder in a vertical position.
  • the 20 cm diameter cylinder is hydraulic and operates with 0 to 250 bar of hydraulic pressure supplied by a hydraulic unit.
  • the pressure piston, actuated by the cylinder has a diameter of 1220 mm, plus or minus 3 mm.
  • a control cabinet is used to control the raising and lowering of the cylinder.
  • the tank used with an internal diameter of 1235 mm, plus or minus 10 mm, a depth of 1000 mm, is made of stainless steel and withstands a pressure greater than 7 bar.
  • the outlet opening of the product is located in the bottom of the tank, on the side.
  • a flexible, pressure-resistant hose connects the bowl port to the flap dispenser.
  • the hose has a length of one meter and an inside diameter of 76 mm.
  • the "big bag” tested is a "big bag” circular fabric whose perimeter is 3640 mm, significantly lower than the inner perimeter of the tank.
  • This "big bag” has a flat cylindrical bottom, a polyethylene bag with total opening 100 microns thick, not glued to the “big bag”, but stitched to it at the intersection between the cylinder (body of “big bag””) and the upper disc closing the upper part of the” big bag “.
  • the “big bag” has a filling chute placed on the top disc of the “big bag”, 5 cm from the edge (this chute can be used to perform a "clean” drain by serving as a drain chute, thus protecting against dirt and grease. orifice in the pressure plate).
  • the top disc and the chute are made of a polyethylene coated canvas, impervious to the contained product.
  • the flexible container contains 680 kg of product at the beginning of emptying.
  • the product contained in the flexible container for the test is a silicone sealant type Oxime.
  • the bowl has casters allowing it to move on flat ground.
  • the product contained in the flexible container for the test is a silicone sealant of Acetoxy type.
  • the flexible container is placed in the tank with a forklift. On the flexible container, a polyethylene film is placed, then the rubber seal against the edges of the tank.
  • the flexible container is drilled through the outlet: the slit is approximately 10 cm. Connect the hose to the outlet, then pressurize down the cylinder.
  • the feeder of the Milling Machine fills up quickly (time less than 1 second, close to 0.5 seconds).
  • the flossing machine normally operates at 30 strokes per minute.
  • the material loss in the bottom of the flexible container is 8.6 liters or 1.26%.
  • the tank is mostly clean: only the parts near the outlet are soiled, or on a radius of 25 cm.
  • the device implemented is the one represented at figure 1 and described above. More precisely, in this example, use is made of a bowl press intended for emptying viscous products contained in tanks of diameter up to 1240 mm, said tanks being resistant to the working pressure.
  • This press has a steel structure, the structure maintains a cylinder in a vertical position.
  • the 20 cm diameter cylinder is hydraulic and operates with 0 to 250 bar of hydraulic pressure supplied by a hydraulic unit.
  • the pressure piston, actuated by the cylinder has a diameter of 1220 mm, plus or minus 3 mm.
  • a control cabinet is used to control the raising and lowering of the cylinder.
  • the tank used with an internal diameter of 1235 mm, plus or minus 10 mm, a depth of 1000 mm, is made of stainless steel and withstands a pressure greater than 7 bar.
  • the outlet opening of the product is located in the pressure plate, on the side, about 15 cm from the edge of the plate.
  • a pressure-resistant steel pipe serves as a conveyor from the outlet port of the tray to the top of a discharge vessel.
  • the pipe is attached to the orifice of the pressure plate by a sealing connection.
  • the pipe has a total length of 2.5 meters and an inside diameter of 76 mm.
  • the "big bag” tested is a "big bag” circular fabric with staggered straps, height 1100 mm, its perimeter is 3640 mm, significantly lower than the inner perimeter of the tank.
  • This "big bag” has a flat cylindrical bottom, a full opening polyethylene bag 100 microns thick, not glued to the “big bag” but stitched to it at the intersection between the cylinder (body of “big bag” ) and the upper disc closing the upper part of the “big bag”.
  • the "big bag” has a filler neck placed on the top disk of the "big bag”, 5 cm from the edge of the "big bag”.
  • the top disc and the chute are made of a polyethylene coated canvas, impervious to the contained product.
  • the container contains 680 kg of product at the beginning of emptying.
  • the bowl has wheels to move it.
  • the product contained in the flexible container for testing is an acetoxy silicone sealant.
  • the flow rate obtained at the outlet of the pipe is greater than 70 liters per minute, it oscillates especially around the value 120 liters per minute with a maximum of 145 liters per minute, for an oil pressure in the jack of 220 bars (this which corresponds to about 5.7 bars in the tank).
  • the presence of a filter grid in the pipe also limits the flow which could therefore be higher without this grid.
  • the flexible container weighed after emptying to a mass of 12 kg. The flexible container weighs 2 kg empty. The material loss is therefore 10 kg or 1.47%.
  • a bowl press which is resistant to working pressure and has a diameter of up to 1240 mm.
  • This press has a steel structure, the structure maintains a cylinder in a vertical position.
  • the 20 cm diameter cylinder is hydraulic and operates with 0 to 250 bar of hydraulic pressure supplied by a hydraulic unit.
  • the pressure piston, actuated by the cylinder has a diameter of 1220 mm plus or minus 3 mm.
  • a control cabinet is used to control the raising and lowering of the cylinder.
  • the tank used with an internal diameter of 1235 mm, plus or minus 10 mm, a depth of 1000 mm, is made of stainless steel and withstands a pressure greater than 10 bar.
  • the outlet opening of the product is located in the bottom of the tank, on the side.
  • a flexible, pressure-resistant hose connects the bowl port to the flap dispenser.
  • the hose has a length of one meter and an inside diameter of 76 mm.
  • the “big bag” tested is a “big bag” circular fabric whose perimeter is 3640 mm, significantly lower than the inner perimeter of the tank.
  • This "big bag” has a flat cylindrical bottom, a polyethylene bag of thickness 100 microns, not glued to the “big bag” but sewn to it at the intersection between the cylinder (body of the “big bag”) and the upper disc closing the upper part of the “big bag”.
  • the "big bag” has a filler neck that serves as a drain chute, placed on the upper disk of the "big bag", 5 cm from the edge, for emptying from above through an orifice in the pressure plate.
  • the top disc and the chute are made of a polyethylene coated canvas, impervious to the contained product.
  • the product contained in the flexible container for the test is a silicone sealant type Oxime.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Packages (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
  • Basic Packing Technique (AREA)
  • Drying Of Solid Materials (AREA)
  • Extraction Or Liquid Replacement (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
  • Devices For Dispensing Beverages (AREA)
  • Silicon Polymers (AREA)
EP04707566.8A 2003-02-13 2004-02-03 Procede de vidange d'un conteneur souple renfermant un produit visqueux Expired - Lifetime EP1625093B2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE602004011209.7T DE602004011209T3 (de) 2003-02-13 2004-02-03 Vorrichtung zum entfernen von einem viskosen produkt aus einem flexiblen behälter

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0301724A FR2851241B1 (fr) 2003-02-13 2003-02-13 Procede de vidange d'un conteneur souple renfermant un produit visqueux
FR0307872A FR2851242B1 (fr) 2003-02-13 2003-06-30 Procede de vidange d'un conteneur souple renfermant un produit visqueux
PCT/FR2004/050039 WO2004074164A1 (fr) 2003-02-13 2004-02-03 Procede de vidange d’un conteneur souple renfermant un produit visqueux

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EP1625093A1 EP1625093A1 (fr) 2006-02-15
EP1625093B1 EP1625093B1 (fr) 2008-01-09
EP1625093B2 true EP1625093B2 (fr) 2017-03-08

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US (2) US8157127B2 (pl)
EP (1) EP1625093B2 (pl)
JP (1) JP2006519143A (pl)
KR (3) KR20120065453A (pl)
AT (1) ATE383319T2 (pl)
AU (1) AU2004213207B2 (pl)
BR (1) BRPI0407498B1 (pl)
CA (1) CA2515037C (pl)
DE (1) DE602004011209T3 (pl)
ES (1) ES2300744T5 (pl)
FR (1) FR2851242B1 (pl)
MX (1) MXPA05008590A (pl)
PL (1) PL204468B1 (pl)
RU (1) RU2339557C2 (pl)
WO (1) WO2004074164A1 (pl)

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Also Published As

Publication number Publication date
FR2851242B1 (fr) 2005-10-21
RU2005128515A (ru) 2006-01-27
CA2515037A1 (fr) 2004-09-02
ES2300744T3 (es) 2008-06-16
JP2006519143A (ja) 2006-08-24
US20060249535A1 (en) 2006-11-09
US8157127B2 (en) 2012-04-17
EP1625093A1 (fr) 2006-02-15
AU2004213207A1 (en) 2004-09-02
KR101414250B1 (ko) 2014-07-01
AU2004213207B2 (en) 2010-06-17
KR20130112945A (ko) 2013-10-14
US20100006594A1 (en) 2010-01-14
PL378631A1 (pl) 2006-05-15
DE602004011209D1 (de) 2008-02-21
ATE383319T2 (de) 2008-01-15
KR20060018812A (ko) 2006-03-02
US8590740B2 (en) 2013-11-26
CA2515037C (fr) 2012-11-20
DE602004011209T3 (de) 2017-08-03
PL204468B1 (pl) 2010-01-29
DE602004011209T2 (de) 2009-01-08
MXPA05008590A (es) 2006-02-28
RU2339557C2 (ru) 2008-11-27
EP1625093B1 (fr) 2008-01-09
FR2851242A1 (fr) 2004-08-20
ES2300744T5 (es) 2017-07-20
BRPI0407498B1 (pt) 2015-08-18
BRPI0407498A (pt) 2006-02-14
WO2004074164A1 (fr) 2004-09-02
KR20120065453A (ko) 2012-06-20

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