EP4201841A2 - Satz zur bildung eines modulartanks und modulartank - Google Patents

Satz zur bildung eines modulartanks und modulartank Download PDF

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Publication number
EP4201841A2
EP4201841A2 EP22216002.0A EP22216002A EP4201841A2 EP 4201841 A2 EP4201841 A2 EP 4201841A2 EP 22216002 A EP22216002 A EP 22216002A EP 4201841 A2 EP4201841 A2 EP 4201841A2
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EP
European Patent Office
Prior art keywords
shell
assembly
shells
vertical
flange
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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.)
Granted
Application number
EP22216002.0A
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English (en)
French (fr)
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EP4201841A3 (de
EP4201841B1 (de
Inventor
Ercole Cordivari
Daniele DI GIANNATALE
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Cordivari SRL
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Cordivari SRL
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Publication of EP4201841A2 publication Critical patent/EP4201841A2/de
Publication of EP4201841A3 publication Critical patent/EP4201841A3/de
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Publication of EP4201841B1 publication Critical patent/EP4201841B1/de
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D88/00—Large containers
    • B65D88/02—Large containers rigid
    • B65D88/06—Large containers rigid cylindrical
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D90/00—Component parts, details or accessories for large containers
    • B65D90/02—Wall construction
    • B65D90/08—Interconnections of wall parts; Sealing means therefor

Definitions

  • the present invention relates to an assembly for the formation of a modular tank and its corresponding modular tank.
  • the present invention relates to a tank for containing and storing fluids, in particular water for domestic use.
  • Storing water is an established practice, which is put into practice where a shortage or discontinuity occurs in the water supply.
  • containers are used, made of various materials such as metals, polymers or agglomerates, which are generally positioned close to the users, for storing and preserving water also for domestic use.
  • Such tanks can be made of metallic materials, for example made of carbon steel and subsequently galvanised or of stainless steel, and have a high structural strength, but at the same time have a high weight and cost too.
  • agglomerates such as cement or asbestos cement (the latter now banned).
  • Plastic tanks have appeared on the scene for a few decades and spread thanks to their lightness and low cost.
  • Plastic tanks can be made using different technologies such as injection, blow moulding or rotational moulding, to name a few.
  • rotational moulding is the one requiring the lowest initial investments, as both the plant and the moulds for making the various items cost less than the other two mentioned technologies.
  • the required level of detail of a rotationally moulded manufactured product cannot be the same as that of a manufactured product made by injection moulding or blow moulding.
  • the manufactured product is formed by gravity: the mould subjected to a thermal cycle is rotated and the plastic powder contained inside is distributed on the walls of the mould by gravity, forming the manufactured product.
  • the molten polymer, forced to enter the mould is forced to replicate the shapes of the mould itself, obtaining a high level of detail. It is more difficult to be able to obtain more accurate detailed shapes using the rotational technology.
  • the patent document DE 9416968 U1 describes a tank for accumulating rainwater comprising two half-shells which can be coupled at a joint line.
  • Each half-shell comprises a plurality of protuberances adjacent to each other which alternate in opposite directions and which are arranged in parallel and concordantly to the respective protuberances of the mutual half-shell at the joint line.
  • the tank would tend to bulge on the joint line and, the mutual movement of the protuberances would tend to make them slide one over the other, causing the gasket to lose its hydraulic sealing.
  • the exchange of reactions in this form is in fact concordant.
  • the aim of the present invention is to obtain a modular tank which is cheap to produce and easy to assemble.
  • the aim of the present invention is to obtain a modular tank which has a good hydraulic and mechanical sealing.
  • the object of the present invention is an assembly for the formation of a modular tank for containing a fluid, said assembly comprising a first half-shell, and a second half-shell, each half-shell providing a body having a bottom wall and side walls ending in a terminal edge for coupling at a horizontal coupling plane with the terminal edge of the other half-shell, said assembly further comprising a gasket which can be interposed between said two half-shells at the terminal edges, and fastening means for securing together said half-shells and preventing their movement along a vertical axis perpendicular to the horizontal plane, each half-shell at the respective terminal edge providing one or more protruding external flanges, each half-shell further providing a plurality of vertical extensions arranged externally on the respective terminal edge projecting along said vertical axis in an opposite direction to the body of the respective half-shell, said assembly being characterised in that each vertical extension of each half-shell has at least one portion parallel to said vertical axis, in that each half-shell provides a plurality
  • each half-shell providing a terminal edge for coupling at a horizontal coupling plane with the terminal edge of the other half-shell, said tank further comprising a gasket that can be interposed between said two half-shells at the terminal edges, and fastening means for securing together said half-shells and preventing them from moving along a vertical axis perpendicular to the horizontal plane, said modular tank being characterised in that each half-shell at the respective terminal edge provides one or more protruding external flanges, and in that each half-shell further provides a plurality of vertical extensions arranged internally or externally on the respective terminal edge parallel to said vertical axis, and a plurality of housing seats, each housing seat being arranged internally or externally on the respective terminal edge between two vertical extensions, said modular tank being configured in such a way as to assume an assembled configuration by coupling together said half-shells with the
  • one or more holes can be obtained on said one or more protruding external flanges for the passage of said fastening means for securing together said half-shells.
  • each half-shell may comprise a plurality of protruding external flanges, each protruding external flange having a flat surface substantially parallel to the horizontal plane.
  • each half-shell said plurality of protruding external flanges can be arranged radially to a plane parallel to said horizontal plane on the respective terminal edge, more particularly equidistantly on the perimeter of the respective terminal edge.
  • each protruding external flange of a half-shell can be spaced from the adjacent protruding external flange by such a distance that when the modular tank is in its assembled configuration, each of the two side ends of each protruding external flange of each half-shell overlaps a respective side end of a protruding external flange of the mutual half-shell.
  • At least one half-shell may have one or more protruding internal flanges.
  • each vertical extension of each half-shell may be arranged on a respective protruding external flange of said plurality of protruding external flanges or on a respective protruding internal flange of said plurality of protruding internal flanges and each housing seat of the corresponding half-shell may correspond to the interspace between two protruding external or internal flanges of the same half-shell.
  • each vertical extension of each half-shell can be arranged on the one protruding external flange or on the one protruding internal flange of the same half-shell.
  • said plurality of vertical extensions may be arranged radially to a plane parallel to said horizontal plane, in particular equidistantly in correspondence with the perimeter of said single protruding external flange or of said single protruding internal flange.
  • said plurality of vertical extensions may be arranged radially to a plane parallel to said horizontal plane, in particular equidistantly in correspondence with the perimeter of said single protruding external flange or of said single protruding internal flange.
  • each housing seat of each half-shell may correspond to the interspace between two vertical extensions of the same half-shell.
  • said plurality of vertical extensions may be arranged radially to a plane parallel to said horizontal plane, in particular equidistantly in correspondence with the perimeter of said single protruding external flange or of said single protruding internal flange.
  • each housing seat of each half-shell may correspond to the interspace between two vertical extensions of the same half-shell.
  • each vertical extension of each half-shell may have a flat surface with vertical development, substantially parallel to the vertical axis.
  • each half-shell may comprise a single protruding external flange, each vertical extension of each half-shell may be arranged on the respective protruding external flange and may be a shaped panel having a hooking portion, said modular tank being configured in such a way that when said half-shells are coupled together at the terminal edges, the respective shaped panels of a half-shell are interlocked on the protruding external flange of the mutual half-shell at a respective housing seat of the mutual half-shell.
  • each shaped panel of each half-shell may have an "S"-shaped cross section and is configured in such a way that when the tank is in its assembled configuration, a portion of said "S"-shaped section of the shaped panel of a half-shell is arranged tangent to the external wall of the mutual half-shell.
  • a housing portion for said gasket may be obtained at said terminal edge of at least one half-shell when said tank is in its assembled configuration.
  • the gasket may have a regular section, in particular a quadrangular or circular one.
  • a first half-shell may have an internal abutting flange spaced from said terminal edge
  • the second half-shell may have an "L"-shaped internal flange, when said two half-shells are coupled together said internal abutting flange of the first half-shell and said "L"-shaped internal flange of the second half-shell form said housing portion for said gasket.
  • said gasket may have a "U"-shaped cross section such as to be fitted into said "L"-shaped internal flange of the second half-shell when the tank is assembled, wherein a first vertical wall of said gasket is provided with a plurality of protuberances and is adapted to be fitted between said "L"-shaped internal flange of the second half-shell and the internal wall of said first half-shell when the tank is in its assembled configuration, and wherein the upper wall of said gasket has a hollow internal portion such that, when the tank is in its assembled configuration, it is in abutment and compressed between the internal abutting flange of the first half-shell and the upper portion of the "L"-shaped internal flange of the second half-shell.
  • said gasket may be a gasket of the FIPFG or FIPG type, introduced in liquid phase into said housing portion obtained in one of said two half-shells.
  • said tank may further comprise one or more tie rods, at least one first half-shell may have a protruding internal flange provided with a plurality of holes, when said tank is assembled, each tie rod couples to two opposite sides of said protruding internal flange by means of fastening means in correspondence with respective holes.
  • said fastening means may provide a plurality of screws, each screw being adapted to pass through the respective holes, and said fastening means may further provide a plurality of nuts and washers for locking said screws in place.
  • said half-shells may have a flared internal shape such as to allow half-shells of the same or different type to be stacked one inside the other.
  • said tank may be made of polymeric material, preferably polyethylene, or metallic material.
  • the extension along an axis parallel to the vertical y-axis of each vertical extension of a half-shell is between five and six times the thickness of the wall of such half-shell.
  • said one or more protruding flanges of each half-shell may be integral with the wall of the respective half-shell, the vertical extensions of each half-shell may be integral with the respective one or more external or internal protruding flanges of the same half-shell.
  • each vertical extension of a half-shell may be between two and ten times its height, intended as the extension along an axis parallel to the vertical axis.
  • Said modular tank 10 is preferably made of plastic material and consists of two half-shells 1, 2 which can be separated and assembled together.
  • the tank 10 could also be made of metallic material, even if more expensive.
  • polymeric materials such as polyethylene (PE)
  • PE polyethylene
  • the tank 10 is obtained using the rotational moulding technique.
  • it can also be obtained by injection moulding, or blow moulding, or other methods.
  • the tank 10 is preferably adapted to contain fluids, in particular liquids such as water, preferably water for domestic use.
  • the tank 10 consists of two portions, or half-shells, an upper half-shell 1 and a lower half-shell 2, designed to be stackable, which couple together on two specially made surfaces, between which a gasket 4 is interposed, and which become integral with each other.
  • each half-shell 1, 2 has a flared internal shape, so as to allow one half-shell to be stacked inside the other.
  • Each half-shell 1, 2 has side walls and a bottom wall, which can be the upper or lower one according to the position of the half-shell in the tank when assembled.
  • the two half-shells can be identical or distinct.
  • said tank 10 comprises a first half-shell or upper half-shell 1 and a second half-shell or lower half-shell 2.
  • Half-shells mean two portions of a shell, in this case a tank, which are adapted to protect the contents once they are coupled together.
  • Such half-shells are provided with side walls and a connecting upper or lower wall.
  • the upper half-shell is generally equipped with openings for accessing the contents, while the lower half-shell is generally equipped with a flat portion or legs for resting on the ground.
  • Said modular tank 10 according to the invention also provides coupling means for coupling said two half-shells 1 and 2.
  • said two half-shells 1 and 2 couple together at a coupling terminal edge 11 or 21, corresponding to the lower edge 11 of the upper half-shell 1 and to the upper edge 21 of the lower half-shell 2.
  • Said half-shells 1 and 2 couple together at said terminal edges 11, 21 along a horizontal coupling X-plane. Furthermore, the assembly between said half-shells 1, 2 takes place parallel to a vertical y-axis, transversal to said horizontal X-plane.
  • the solution according to the invention provides a fastening system for constraining the two half-shells 1, 2 on the vertical y-axis, allowing a gasket 4 to maintain a hydraulic sealing by its compression, and a constraint system along the X-plane which makes it possible to reduce the rotations caused by the hydrostatic thrust and the consequent separation of the half-shells which would cause the gasket 4 to lose compression and, consequently, cause the hydraulic sealing to fail.
  • a gasket 4 is in fact interposed between the first half-shell 1 and the second lower half-shell 2 for the hydraulic sealing of the modular tank 1, once assembled and filled with the fluid to be stored.
  • the internal portions of said half-shells 1, 2 of said two coupling edges 11 and 21, in other words the portions which will come into contact with the fluid to be contained, are shaped in such a way as to form an internal seat 3 for housing the gasket 4.
  • the geometry of the gasket 4 is such as to make it possible to obtain the hydraulic sealing once the mechanical assembly process between the two half-shells 1 and 2 has been completed. In fact, once the two half-shells 1 and 2 are mechanically coupled, a force on the coupling flanges 12, 22 such as to compress the gasket 4 and guarantee the sealing will be obtained.
  • a first half-shell 1 in particular the upper half-shell 1, has an internal abutting flange 14 spaced from the respective terminal edge 11.
  • said internal abutting flange 14 is located in the internal part of the concavity of the half-shell 1.
  • the second half-shell 2 on the other hand, has an "L"-shaped internal flange 24 which departs from the respective terminal edge 21.
  • the internal abutting flange 14 of the first half-shell 1 and the "L"-shaped internal flange 24 of the second half-shell 2 form said housing portion 3 for the gasket 4.
  • the gasket 4 has a "U"-shaped cross section such as to fit onto said "L"-shaped internal flange 24 of the second half-shell 2. As can be seen, such "U"-shaped gasket 4 therefore has two side walls 41, 45 and an upper wall 43.
  • a first vertical wall 41 of the gasket 4 is provided with a plurality of protuberances 42 and is adapted to be fitted between said "L"-shaped internal flange 24 of the second half-shell 2 and the internal wall of the first half-shell 1 when the tank 10 is in its assembled configuration.
  • the upper wall 43 of the gasket 4 has an internal hollow portion 44 such that, when the tank 10 is in its assembled configuration, it is in abutment and compressed between the internal abutting flange 14 of the first half-shell 1 and the upper portion of the "L"-shaped internal flange 24 of the second half-shell 2.
  • the gasket 4 has a section functional for the purpose and made using the most common manufacturing processes such as moulding or extrusion processes.
  • a closed-cell gasket having a regular section for example a rectangular or circular one, can be used. In both cases, the higher the thrust on the tank walls, the more the gasket is compressed. In this way, the sealing is guaranteed in any operating condition.
  • the liquid gasket may be of the FIPFG (formed in place foam gasket) type, due to its main characteristic of being in a very viscous liquid state, it tends to fill the shape that is available (seat) and, in contact with the air, begins to polymerise forming a closed-cell foam. In this way there is a good filling of the seat using a material which is able to fulfil the hydraulic sealing tasks in the best possible way.
  • FIPFG formed in place foam gasket
  • the liquid gasket may be of the FIPG (formed in place gasket) type, due to its main characteristic of being in a very viscous liquid state, it tends to fill the shape that is available (seat) and, in contact with the air, begins to polymerise forming a compact bead. In this way there is a good filling of the seat using a material which is able to fulfil the hydraulic sealing tasks in the best possible way.
  • FIPG formed in place gasket
  • Each half-shell 1 or 2 also has, at the external portion of the respective terminal edge 11 or 21, a plurality of protruding flanges 12 or 22, in particular toothed portions 12, 22 protruding from the external body of the half-shells 1, 2.
  • Each protruding flange 12, 22 has a flat surface substantially parallel to the horizontal coupling X-plane.
  • said plurality of protruding flanges 12, 22 is arranged radially to a plane parallel to said horizontal X-plane on the respective terminal edge 11, 21, more particularly equidistantly on the perimeter of said terminal edges 11, 21.
  • Each protruding flange 12, 22 of a half-shell 1, 2 is spaced from the following flange of the same half-shell 1, 2 by such a distance that each of its two side ends overlaps a respective side end of a protruding flange 22, 12 of the other half-shell 2, 1.
  • the modular tank 10 therefore provides coupling means for coupling together the protruding flanges 12, 22 of the two half-shells 1, 2.
  • each flange 12, 22 there are respective holes 5 arranged in such a way as to allow the passage of suitable screws 6, each screw 6 being adapted to pass through the holes 5 obtained in the free ends of a pair of flanges 12, 22, respectively a flange 12 of the first half-shell 1 and a flange 22 of the second half-shell 2.
  • Such screws 6 can be locked in place by means of bolted joints, in particular by means of nuts 7 and washers 8.
  • Such coupling means make it possible to create a simple and reliable mechanical block in the external part of the tank 10, avoiding the separation of the two half-shells 1 and 2 and acting on the gasket 4 positioned in the internal seat 3 by applying an initial compression.
  • Each flange 12, 22 is provided with a respective vertical extension 13, 23, in particular an external panel 13, 23, in particular having a flat surface with vertical development, substantially parallel to the vertical y-axis.
  • the external panels 13 of the first half-shell 1 are arranged on the face of the respective flange 12 facing the second half-shell 2, and the flat panels 23 of the second half-shell 2 are arranged on the face of the respective flange 22 facing the first half-shell 1, in such a way that when the half-shells 1, 2 are assembled together, the external panels 13, 23 of a half-shell 1, 2 are adjacent to the external wall of the body of the other half-shell 2, 1.
  • Such external panels 13, 23 make it possible to limit the deformations induced on the coupling area, caused by the hydrostatic thrust, which could cause a loss of compression at the terminal edges 11 and 21 and at the gasket 4 positioned in the seat 3 with consequent leakage of the fluid contained inside the tank 10.
  • the external panels 12, 13 of a half-shell 1, 2 are arranged in such a way as to be adjacent and substantially tangent to the wall of the mutual half-shell 2, 1.
  • both half-shells 1, 2 offer resistance to bulging by limiting the deformations on the mutual half-shell 1, 2 and therefore guaranteeing an optimal hydraulic sealing.
  • the manufactured product we can consider the manufactured product as if it were twice as thick as the initial thickness. In this area, the reactions are opposite since the bulging of a half-shell 1 or 2 is limited by the mutual half-shell 2 or 1 and vice versa.
  • such external panels 13, 23 have an extension along the vertical y-axis such as to act on the wall of the mutual half-shell 2, 1 having a linear development and arranged immediately after the external flange, before the curvature of the half shell 2, 1.
  • tank 10 is made of polyethylene, since such material does not lend itself to flat shapes due to its poor mechanical properties, the extension of the linear portion is limited, otherwise high deformations would occur.
  • the extension in height, intended as the extension along an axis parallel to the vertical y-axis of each vertical extension 13, 23 may be between five and six times the thickness of the wall of the same half-shell 1, 2.
  • each vertical extension 13, 23 of a half-shell 1 intended as the extension parallel to the terminal edge 11, 21 of each vertical extension 13, 23, it may be between two and three times its height along an axis parallel to the vertical y-axis.
  • the external panels 13, 23 have a discontinuous and alternating pattern, so as to offer resistance to deformations by limiting the stresses on the mutual half-shell 2, 1.
  • Said modular tank 10 is therefore configured in such a way as to assume an assembled configuration by coupling together said half-shells 1, 2 with the respective terminal edges 11, 21 in correspondence with said horizontal X-plane, arranging the vertical extensions 13, 23 of a first half-shell 1, 2 alternately to the vertical extensions 23, 13 of the second half-shell 2, 1 and so as to be projecting towards the mutual half-shell 2, 1 in such a way that each vertical extension 13, 23 of a half-shell 1, 2 fits into the respective interspace of the mutual half-shell 2, 1, interposing said gasket 4 and securing together said one or more protruding external flanges 12, 22 of the two half-shells 1, 2 by means of said fastening means 6, 7, 8.
  • the use of the external panels 13, 23 makes it possible to align and exchange mutual forces between the half-shells 1, 2, creating continuity on the whole circumference of the tank 10. Another aspect which should not be underestimated is the effectiveness of the exchange of rheonomic constraints, given by the external panels 13, 23 which act as continuous protrusions of the half-shell 1, 2 towards the opposite half-shell 2, 1 and are not elements added at a later stage, such as the pins used in known technical solutions.
  • the centring and alignment of the half-shells 1, 2 is made easier for the end user as, the external panels being visible, he/she is able to evaluate if he/she is carrying out the operations in a workmanlike manner.
  • the solution according to the invention makes it possible to obtain systems suitable for joining the parts in terms of quality and practicality thanks to the gasket for an optimal hydraulic sealing, and thanks to the mechanical fastening system.
  • the two half-shells 1, 2 are coupled in the middle along the horizontal X-plane and in this area there is a flat horizontal part parallel to the ground on which holes 5 are obtained to accommodate clamping screws 6 arranged along the perimeter of the tank 10. Furthermore, the section of the area where the two half-shells 1, 2 are coupled, and the area where the gasket 4 is positioned, has been designed in such a way as to avoid the rotation caused by the hydrostatic thrust of the flanged part 12, 22. For this reason shapes have been exploited which tend to offer an opposite reaction to the rotation caused by the hydrostatic thrust.
  • the external panels 13, 23 also have the function of facilitating the alignment between the two half-shells 1, 2 during the assembly and installation phase.
  • the tank 10 since the tank 10 is to be installed above ground, it has been developed in such a way that minimal fluid leakages do not occur in the area where the half-shells 1, 2 are coupled.
  • tie rods 9 placed in the internal part of the modular tank 10 when assembled.
  • Suitable seats 5 can be made on the internal flange 14, whose aim is to accommodate bolted joints, formed by screws 6, nuts 7 and washers 8, and to make the tie rod 9, preferably made of the same material as the tank 10, integral with the internal flange 14 itself.
  • the tank 10 of the second embodiment is similar to the one previously described and therefore the common elements are not described and have the same reference numbers.
  • each half-shell 1, 2 has a smaller number of flanges 12, 22.
  • Such flanges 12, 22, however, have a greater perimeter extension.
  • each external panel 13, 23, intended as the extension parallel to the terminal edge 11, 21 of the respective half-shell 1, 2 is eight or ten times the extension in height of the vertical extension 13, 23 itself, intended as the extension along an axis parallel to the vertical y-axis.
  • the smaller number of flanges 12, 22 entails a smaller number of screws and bolts, and makes it possible to reduce the time for assembling the half-shells 1, 2 while guaranteeing the structural strength and the hydraulic sealing which characterise the invention.
  • each half-shell 1, 2 it is provided a continuous seat 3, in particular having a semicircle section, for housing the gasket (not shown in the figure).
  • each terminal edge 11, 21 it is provided an internal flange 15, 25 which continues along the entire respective terminal edge 11, 21.
  • the modular tank 10 according to the second embodiment is advantageously cheaper and requires a reduced installation time, given the smaller number of screws.
  • the resistance at the flanged part is lower and the deformations are higher.
  • Figures 13 - 18 show a third embodiment of the modular tank 10 according to the invention.
  • the tank 10 of the third embodiment is similar to those previously described and therefore the common elements will not be described and have the same reference numbers.
  • each half-shell 1, 2 has a single external flange 16, 26 which is continuous along the perimeter of the respective terminal edge 11, 21 and projecting towards the outside of the body of the respective half-shell 1, 2.
  • each external flange 16, 26 has a flat surface substantially parallel to the horizontal X-plane.
  • each external flange 16, 26 there is a plurality of vertical extensions 17, 27, in particular, said vertical extensions are shaped external panels 17, 27.
  • Said shaped panels 17, 27 of a half-shell 1, 2 are arranged radially to a plane parallel to said horizontal X-plane on the respective external flange 16, 26, so as to leave empty spaces and are arranged alternately to the shaped panels 27, 17 of the other half-shell 2, 1.
  • each shaped panel 17 of the first half-shell 1 is arranged on the face of the external flange 16 facing the second half-shell 2
  • each shaped panel 27 of the second half-shell 2 is arranged on the face of the respective external flange 26 facing the first half-shell 1, in such a way that when the half-shells 1, 2 are assembled together, the shaped panels 17, 27 of a half-shell 1, 2 are located adjacent to the external wall of the body of the other half-shell 2, 1, fitted into the empty spaces of the mutual half-shell 2, 1.
  • Such empty spaces correspond to the interspace between two adjacent shaped panels 17, 27 of the same half-shell 1, 2.
  • said shaped panels 17, 27 have an "S"-shaped cross section and are configured in such a way that when said modular tank 10 is in its assembled configuration, the shaped panels 17, 27 of each half-shell 1; 2 are interlocked on the protruding external flange 26; 16 of the mutual half-shell 2; 1. More specifically, a first portion or first curve of the "S"-shaped section of the shaped panel 17, 27 of a half-shell 1, 2 is therefore adjacent to the external wall of the mutual half-shell 2, 1 and the other portion or second curve of the "S"-shaped section of the shaped panel 17, 27 of a half-shell 1, 2 is adjacent to the external edge of the protruding external flange 26; 16 of the mutual half-shell 2, 1. In other words, the "S"-shaped section of the shaped panel 17, 27 hooks the protruding flange of the mutual half-shell.
  • Such shaped panels 17, 27 are adapted to limit the deformations induced on the coupling area, caused by the hydrostatic thrust, which could cause a loss of compression at the terminal edge 11 or 21 and at the gasket positioned in the seat 3 with consequent leakage of the fluid contained inside the tank 10.
  • the particular geometry of the shaped panels 17, 27 also makes it possible to have a resistance on the vertical y-axis given that the external flange 16, 26 of a half-shell 1, 2 intersects with the shaped panel 27, 17 of the mutual half-shell 2, 1.
  • both half-shells 1, 2 offer resistance to bulging by limiting the deformations on the mutual half-shell 1, 2 and therefore guaranteeing an optimal hydraulic sealing.
  • the manufactured product we can consider the manufactured product as if it were twice as thick as the initial thickness. In such area, opposite reactions occur since the bulging of a half-shell 1 or 2 is limited by the mutual half-shell 2 or 1 and vice versa.
  • the particular geometry of the shaped panels 17, 27 makes it possible to fit the upper half-shell 1 and the lower half-shell 2 by exploiting the elastic component of the material constituting the two parts of the tank 10 in order to pass the external flanges 16 and 26 by the free end of the shaped panel itself 17 or 27 and at the same time, once the half-shells 1 and 2 come into contact, makes it possible to accommodate the external flanges 16 and 26.
  • the operation of fitting the half-shells 1 and 2 may occur by simple pressure and then, once the half-shells 1 and 2 come into contact, the bolted joints can be installed.
  • the solution according to the present invention allows the two half-shells 1, 2 to be coupled in such a way as to have an excellent mechanical and hydraulic sealing.
  • the fastening means between the half-shells of the tank do not have added pins or mechanical inserts, using conventional fastening means such as screws and bolts. This makes it possible to reduce the assembly time of the half-shells, which can also be performed by non-professional personnel.
  • the tanks according to one of the described embodiments are suitable for being manufactured using the rotational moulding technique, or even using the injection or blow moulding techniques; thanks to the simplicity of the shapes, the material is able to flow freely inside the mould, replicating its shape in the best possible way.
  • the total absence of undercuts will also allow an extremely simple extraction of the piece from the mould.
  • another advantage of the tank according to the invention is the intrinsic stiffness which makes it possible to have a high localised stiffness, limiting as much as possible the deformations of the coupling area.
  • the hydrostatic thrust induce bending moments on the walls of the tank, the presence of external or internal extensions makes it possible to hinder the induced rotations given that the wall of a half-shell rests on the opposite half-shell offering resistance to deformations through the exchange of mutual interactions. Thanks to the geometry of the manufactured product, this phenomenon is present along the entire perimeter of the coupling area and the resistance can be considered uniform.
  • the area where there is a darker shade of grey corresponds to the regions where the deformation is greater, compared to the areas with a lighter shade of gray.
  • the darkest area is wider in the version without the vertical walls of Figure 20 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Catching Or Destruction (AREA)
EP22216002.0A 2021-12-23 2022-12-22 Satz zur bildung eines modulartanks und modulartank Active EP4201841B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT102021000032441A IT202100032441A1 (it) 2021-12-23 2021-12-23 Serbatoio componibile

Publications (3)

Publication Number Publication Date
EP4201841A2 true EP4201841A2 (de) 2023-06-28
EP4201841A3 EP4201841A3 (de) 2023-10-11
EP4201841B1 EP4201841B1 (de) 2025-07-16

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EP (1) EP4201841B1 (de)
IT (1) IT202100032441A1 (de)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4333580A (en) 1980-09-29 1982-06-08 Associated Plastics, Inc. Mechanism for locking two halves of an underground vault
DE9416968U1 (de) 1994-10-24 1994-12-15 Durotherm Kunststoffverarbeitung Gmbh, 72221 Haiterbach Aus Kunststoff tiefgezogener Tank
US7854338B2 (en) 2006-09-04 2010-12-21 Graf Plastics Gmbh Water tank and method for manufacturing a water tank
US8740005B1 (en) 2011-03-04 2014-06-03 Infiltrator Systems, Inc. Plastic tank having a clamped joint
US10427356B1 (en) 2016-01-22 2019-10-01 Infiltrator Water Technologies Llc Plastic tank having a welded frusto-conical flange joint
US10696448B1 (en) 2016-01-22 2020-06-30 Infiltrator Water Technologies Llc Making a plastic tank with an integrity-verifiable weld joint
US10723080B1 (en) 2016-01-22 2020-07-28 Infiltrator Water Technologies, Llc Making a plastic tank having a weld joint by using a resilient clamp

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5099508U (de) * 1974-01-14 1975-08-18
JPS5313054Y2 (de) * 1974-01-30 1978-04-08
EP0064310A3 (de) * 1981-05-05 1983-01-26 A.G. INTERNATIONAL S.p.A. Kunststofftank
JPS5830971A (ja) * 1981-08-11 1983-02-23 昭和ゴム株式会社 遮壁構造物
JP2008144911A (ja) * 2006-12-12 2008-06-26 Three Bond Co Ltd シール構造
DE102010000088B4 (de) * 2010-01-15 2011-09-22 Sonderhoff Chemicals Gmbh Verfahren und Vorrichtung zum Herstellen von Polymerkaschierungen oder strangförmigen Aufträgen an einem Substrat

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4333580A (en) 1980-09-29 1982-06-08 Associated Plastics, Inc. Mechanism for locking two halves of an underground vault
DE9416968U1 (de) 1994-10-24 1994-12-15 Durotherm Kunststoffverarbeitung Gmbh, 72221 Haiterbach Aus Kunststoff tiefgezogener Tank
US7854338B2 (en) 2006-09-04 2010-12-21 Graf Plastics Gmbh Water tank and method for manufacturing a water tank
US8740005B1 (en) 2011-03-04 2014-06-03 Infiltrator Systems, Inc. Plastic tank having a clamped joint
US10427356B1 (en) 2016-01-22 2019-10-01 Infiltrator Water Technologies Llc Plastic tank having a welded frusto-conical flange joint
US10696448B1 (en) 2016-01-22 2020-06-30 Infiltrator Water Technologies Llc Making a plastic tank with an integrity-verifiable weld joint
US10723080B1 (en) 2016-01-22 2020-07-28 Infiltrator Water Technologies, Llc Making a plastic tank having a weld joint by using a resilient clamp

Also Published As

Publication number Publication date
IT202100032441A1 (it) 2023-06-23
EP4201841A3 (de) 2023-10-11
EP4201841B1 (de) 2025-07-16

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