EP0510853A2 - Système de revêtement pour réservoir avec col scellé - Google Patents
Système de revêtement pour réservoir avec col scellé Download PDFInfo
- Publication number
- EP0510853A2 EP0510853A2 EP92303278A EP92303278A EP0510853A2 EP 0510853 A2 EP0510853 A2 EP 0510853A2 EP 92303278 A EP92303278 A EP 92303278A EP 92303278 A EP92303278 A EP 92303278A EP 0510853 A2 EP0510853 A2 EP 0510853A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- collar
- tank
- opening
- wall
- collars
- 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.)
- Granted
Links
Images
Classifications
-
- 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
- B65D90/04—Linings
- B65D90/046—Flexible liners, e.g. loosely positioned in the container
Definitions
- Various water tanks and the like are desirably lined with a flexible plastic barrier to prevent corrosion of the tank, or the leaching of undesirable substances. This is especially the case when the tank body is made of steel which, apart from the corrosion problem, can exhibit significant advantages over other materials.
- a system for connecting a plastic tank lining to a penetration fitting which forms an opening through a tank wall.
- an improved structure for a tank lining system is provided which is easier to assemble, and which provides an air and water tight seal between the liner and the tank without the use of sealants or direct compression gaskets.
- a direct compression gasket is a gasket which is under constant compression.
- a disadvantage of such a gasket is that, over a period of time it can take a compression set due to the constant pressure and can lose effectiveness.
- the Culligan International Company has sold a tank lining system where a yoke is required. By this invention such a yoke is eliminated.
- a tank lining system comprises a tank having a wall defining a first opening.
- a flexible sheet lining abuts the interior surface of the wall and defines a second opening that is aligned with the first opening of the tank wall.
- a first collar surrounds the first opening, the first collar being attached to the tank, typically by welding when the tank is metal and the first collar is made of a metal which is compatible to the metal of the tank.
- both the tank and the first collar may be made of steel.
- a second collar surrounds the second opening, and is attached by an appropriate sealing to the flexible sheet, for example radio frequency (RF) heat sealing, solvent welding, spin welding, ultrasonic welding, contact heating, or any other desired process.
- RF radio frequency
- the flexible sheet may be made of vinyl plastic or polyurethane sheeting, with the second collar being made of a corresponding, but typically rigid, plastic which is sealingly compatible with the plastic of the sheet.
- Means are provided for retaining the first and second collars together, while providing a seal of the junction area that is defined between them.
- the first and second collars carry an O-ring between them for sealing the junction area, with the O-ring comprising a seal of the non-direct compression type, as is the case with respect to O-rings, for an improved lifetime of the seal.
- the second collar is surrounded by the first collar in retained-together relation.
- This retained-together relation can be accomplished simply by attaching with bolts if desired.
- the first collar may define spaced, inwardly projecting first locking flange means, while the second collar defines spaced, outwardly projecting second locking flange means which are proportioned to pass axially through and to rotationally interlock with the first locking flange means.
- relative rotation of the first and second collars with their respective locking flange means positioned for interlocking can cause the two collars to enter into rotationally interlocking relation with each other through the respective locking flanges, to cause axial locking together.
- nut means threadedly connected to the second collar and abutting the first collar to force, upon rotation of the nut means, the first and second locking flange means into axially loaded relation together.
- a steel water tank 10 comprising a tank wall 12, to which there is attached a steel first collar 14 which defines a first opening 16.
- First collar 14 is welded by annular weld line 18 to the remainder of tank wall 12.
- Tank 10 carries an inner plastic liner 20 made of polyvinyl chloride plastic or the like. At the upper end of said plastic liner 20 there is an aperture 21, with an annular section 22 of plastic liner 20 being firmly sealed to second collar 24 by R.F. sealing or the like. Second collar 24 may be made of rigid polyvinyl chloride, as is desirable in such a circumstance to promote sealing compatibility. Second collar 24 fits within first collar 14 in telescoping relation so that a portion of second collar 24 is surrounded by first collar 14.
- Second collar 24 defines, in this embodiment, three outwardly projecting locking flanges 26. As shown in Fig. 2, locking flanges 26 are spaced from each other by spaces that are of typically slightly larger circumferential angle than the circumferential angle of each locking flange 26.
- First collar 14 in turn, defines three inwardly projecting, spaced locking flanges 28.
- Each of the locking flanges 26, 28 are proportioned and spaced so that they can fit between each other, as particularly shown in Fig. 2, when the first and second collars 14, 24 are moved axially with respect to each other.
- the respective collars can be placed into a position as illustrated in Fig. 1 and also Fig. 3 by passing through the configuration of Fig. 2, and then relatively rotating first and second collars 14, 24 to the position of Figs. 1 and 3 where the respective locking flanges 26, 28 are placed in rotationally interlocking relation, to retain the respective collars 14, 24 together in axially locked relation.
- Second collar 24 also defines an annular, outwardly projecting flange 30, which carries an O-ring 32.
- O-ring 32 the junction area between the respective collars 14, 24 may be sealed by the presence of O-ring 32.
- O-ring 32 may be inserted, to prevent migration of air back into the junction area between wall 12 and liner 20.
- threaded nut 34 may be applied to external threads 36 of collar 24.
- the nut member is rotated downwardly until its flange 38 abuts an annular shoulder 40 of first collar 14, generating upward pressure on second collar 24 relative to first collar 14. This causes a load to be developed between the respective locking flanges 26, 28 for improved sealing and retention of the system.
- Nut 34 may abut the shoulder 40 of first collar 14 through a shroud or cover 42, which may be made of sheet steel or the like, to protect the upper portion of the tank, as shown in Fig. 1.
- Shroud 42 also carries a lower annular seal member 44, which seals against the tank wall 12.
- the tank lining system of this invention is provided with relatively simple construction, with the flexible tank liner carrying second collar 24 in sealed relation, so that the respective first and second collars are easily locked together and sealed without the complexities required in the prior art.
- Second collar 24 also defines internal threads 46 in aperture 21, for attachment to a conventional adaptor.
- one or more ports 46 may be formed in the wall 12 of the tank, to facilitate the bleeding of air bubbles from between the respective members 12, 20. Then, when the process is finished, port or ports 46 may be closed with a sealant or the like, as shown in Fig. 1. This may be used in conjunction with draining air through the junction area between first and second collars 14, 24, or it may be used as a substitute for that technique.
- Water tank 10a comprises a wall 12a as in the previous embodiment, with wall 12a carrying a first collar 14a in welded relation about a first opening, as in the previous embodiment.
- the tank contains a flexible liner 20a which is bonded to a generally plastic second collar 24a in a manner similar to the previous embodiment by any desired bonding means such as R.F. heat sealing, or any other desired process.
- the respective collars occupy a relation where the second collar 24a has a portion 43 which is surrounded by first collar 14a, but also, second collar 24a defines a collar section 50 which overlies first collar 14a in the manner shown. Collar section 50 and first collar 14a define apertures which receive retention bolts 52, to tightly secure the two collars 14a, 24a together.
- An O-ring 54 may be provided to seal the junction area between the two collars 14a, 24a.
- threads 46a are provided in an upper aperture 12a of the tank to facilitate the bleeding of air from the space between the tank wall 12 and flexible inner liner 20a, this being accomplished by pressurizing the interior of inner liner 20a by either compressed air or filling the tank with liquid. Then, apertures 46a may be closed up with sealant as shown, so that air cannot return to the junction between wall 12a and inner liner 20a.
- second collar 24a defines an internally threaded aperture 46a for receiving a conventional connector or adaptor for the tank.
- a threaded nut 56 may be provided in threaded relation with an externally threaded portion of second collar 24a to hold sheet metal shroud 58 onto the top of the tank.
- Shroud 58 provides external protection and provides the system with an aesthetic look.
- a simplified tank liner system which is easier to install and which exhibits excellent durability and useful life.
- the flexible liner 20 or 20a is simply inserted into the mouth of the tank. The respective collars are secured together.
- the tank system is pressurized, or filled with water, to force the liner into intimate relation with the tank wall, and the system can be closed up and ready for years of useful life.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
- Details Of Rigid Or Semi-Rigid Containers (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Moulding By Coating Moulds (AREA)
- Packages (AREA)
- Coating Apparatus (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US69156491A | 1991-04-25 | 1991-04-25 | |
US691564 | 1991-04-25 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0510853A2 true EP0510853A2 (fr) | 1992-10-28 |
EP0510853A3 EP0510853A3 (en) | 1993-02-03 |
EP0510853B1 EP0510853B1 (fr) | 1994-11-02 |
Family
ID=24777041
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP92303278A Expired - Lifetime EP0510853B1 (fr) | 1991-04-25 | 1992-04-13 | Système de revêtement pour réservoir avec col scellé |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0510853B1 (fr) |
AT (1) | ATE113558T1 (fr) |
AU (1) | AU652240B2 (fr) |
CA (1) | CA2065757C (fr) |
DE (1) | DE69200606T2 (fr) |
ES (1) | ES2066558T3 (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4418715A1 (de) * | 1993-06-03 | 1994-12-08 | Duttenhoefer Gmbh Gottlieb | Verpackungsverschluß einer mehrfach kombinierbaren Gefahrgutverpackung |
WO2001079082A3 (fr) * | 2000-04-18 | 2002-03-07 | United States Filter Corp | Reservoir de traitement a ouverture centrale pour brides de reservoir metalliques |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE717476A (fr) * | 1959-12-11 | 1968-12-16 | ||
US3918605A (en) * | 1974-04-15 | 1975-11-11 | Calvin J Butler | Combination container with disposable closure and linear assembly |
NL7501558A (en) * | 1975-02-10 | 1976-08-12 | Dow Chemical Nederland | Transportation of liquid materials in road tankers - containing transporting bag used once as inner coating of tank |
US4537329A (en) * | 1984-04-02 | 1985-08-27 | Culligan International Company | Tank lining system |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1000634A (en) * | 1962-11-15 | 1965-08-11 | Leer Ind Ltd Van | Container for the packaging, the storage and the transportation of goods |
US4164304A (en) * | 1978-05-30 | 1979-08-14 | The Continental Group, Inc. | Closure for steel drums with blow molded liners |
-
1992
- 1992-04-10 CA CA002065757A patent/CA2065757C/fr not_active Expired - Fee Related
- 1992-04-13 ES ES92303278T patent/ES2066558T3/es not_active Expired - Lifetime
- 1992-04-13 EP EP92303278A patent/EP0510853B1/fr not_active Expired - Lifetime
- 1992-04-13 AT AT92303278T patent/ATE113558T1/de not_active IP Right Cessation
- 1992-04-13 DE DE69200606T patent/DE69200606T2/de not_active Expired - Fee Related
- 1992-04-24 AU AU15127/92A patent/AU652240B2/en not_active Ceased
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE717476A (fr) * | 1959-12-11 | 1968-12-16 | ||
US3918605A (en) * | 1974-04-15 | 1975-11-11 | Calvin J Butler | Combination container with disposable closure and linear assembly |
NL7501558A (en) * | 1975-02-10 | 1976-08-12 | Dow Chemical Nederland | Transportation of liquid materials in road tankers - containing transporting bag used once as inner coating of tank |
US4537329A (en) * | 1984-04-02 | 1985-08-27 | Culligan International Company | Tank lining system |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4418715A1 (de) * | 1993-06-03 | 1994-12-08 | Duttenhoefer Gmbh Gottlieb | Verpackungsverschluß einer mehrfach kombinierbaren Gefahrgutverpackung |
WO2001079082A3 (fr) * | 2000-04-18 | 2002-03-07 | United States Filter Corp | Reservoir de traitement a ouverture centrale pour brides de reservoir metalliques |
Also Published As
Publication number | Publication date |
---|---|
AU652240B2 (en) | 1994-08-18 |
AU1512792A (en) | 1992-10-29 |
DE69200606T2 (de) | 1995-05-04 |
ATE113558T1 (de) | 1994-11-15 |
ES2066558T3 (es) | 1995-03-01 |
CA2065757C (fr) | 1996-04-02 |
DE69200606D1 (de) | 1994-12-08 |
CA2065757A1 (fr) | 1992-10-26 |
EP0510853B1 (fr) | 1994-11-02 |
EP0510853A3 (en) | 1993-02-03 |
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