Container wall for a container covered by a foil and outer formwork for producing the container wall

Abstract

A container wall for storing and fermenting materials, comprising a clamping channel, having an undercut near the upper edge that is open for clampingly receiving a rim of at least one plastic foil that covers the container at the top, the clamping channel comprises a narrowed lateral insertion slot with an upper and a lower protrusion, to which the foil can be wrapped around. A lower wall of the clamping channel is wider than the thickness of the clamping rail at the facing longitudinal edge which is formed as a flat profile, the upper wall of the clamping channel is at least twice as wide as the thickness of the clamping rail. The insertion profile can be inserted into the clamping channel through the entry. When the foil that is wrapped around the insertion profile is under tension, the insertion profile is retained in the clamping channel by the protrusions.

1 . Container wall, preferably made of concrete, in particular for container for storing and fermenting ferment materials, comprising a clamping channel, having an undercut near the upper edge that is open to the outside for clampingly receiving a rim of at least one foil made of plastic material that covers the container at the top, characterized in that the clamping channel ( 112 ) comprises a narrowed lateral insertion slot ( 124 ) that is formed by an upper and a lower protrusion ( 120 ,  122 ), which height is less than the height of an oblong insertion profile ( 126 ), to which the foil ( 130 ) can be wrapped around, that can be inserted into the clamping channel, wherein the cross-sectional dimensions of the channel ( 112 ), the insertion slot ( 124 ) and the insertion profile ( 126 ) are such that the insertion profile ( 126 ) can be inserted into the clamping channel ( 112 ) trough the entry slot in an oblique orientation thereto and when the foil ( 130 ) that is wrapped around the insertion profile is under tension, the insertion profile is retained in the clamping channel by the protrusions ( 120 ,  122 ) against moving out of the clamping channel in an approximately parallel orientation to the protrusions. 
     
     
         2 . Container wall according to  claim 1 , wherein the insertion profile ( 126 ) comprises a predetermined breaking point ( 132 ), wherein the insertion profile ( 126 ) bents essentially around a horizontal axis when a predetermined force acts on the foil ( 130 ). 
     
     
         3 . Container wall, preferably made of concrete, in particular for container for storing and fermenting ferment materials, comprising a clamping channel near the upper edge for fixating a rim of at least one foil made of plastic material that covers the container at the top, with an annular clamping profile arranged in the upper area of the container wall that comprises the inner clamping channel with an insertion slot that is open to the outside, wherein the foil rim can be inserted into the clamping channel through the insertion slot and can be affixed in the clamping channel using an oblong clamping element, wherein the foil area near the wall forms an angle to the horizontal and wherein the clamping profile has an upper and a lower leg, characterized in that the upper leg facing the foil is tilted so that up to the maximum allowable tensile strain of the foil it extends approximately parallel or in a small angle to the foil so that a force from the foil directed to the upper leg acts in its larger part as a compression load on this leg. 
     
     
         4 . Container wall according to  claim 1 , characterized in that the clamping channel or the clamping profile respectively is formed by a profile rail ( 18   a ,  36 ,  50 ,  222 ) that has a U-shaped or C-shaped cross section and the rail is preferably arranged tilted so that, seen in the cross section of the rail, its insertion slot lies in a plane that is directed obliquely downward. 
     
     
         5 . Container wall according to  claim 1   4 , wherein the clamping channel or the clamping profile respectively is formed into the material of the concrete wall. 
     
     
         6 . Container wall according to  claim 5 , wherein a profile rail ( 36 ,  56 ,  222 ) is at least partially casted into the concrete wall. 
     
     
         7 . Container wall according to  claim 4 , wherein the profile rail ( 18   a ,  222 ) is mountable to the container wall from outside. 
     
     
         8 . Container wall according to  claim 3 , wherein the angle of the plane of the insertion slot is approximately 45° in respect to the container wall that extends overhead thereto. 
     
     
         9 . Container wall according to  claim 7 , wherein vertical mounting profiles ( 80 ) can be mounted at intervals to the outside of the container wall, which preferably comprise a recess ( 86 ) adapted to the cross section of the profile rail ( 18   a ,  36 ), in which the profile rail ( 18   a ,  36 ) can be inserted and affixed. 
     
     
         10 . Container wall according to  claim 9 , wherein the mounting section is U-shaped in the cross section, the recess ( 86 ) is formed in the legs and the web ( 82 ) of the mounting section can be connected to the container wall, preferably using screw holes ( 86   a ) in the web for receiving fastening screws. 
     
     
         11 . Container wall according to  claim 9 , wherein a holding means for the profile rail ( 18   a ,  222 ) comprise an angle profile ( 12 ), which is connected to the rail ( 18   a ,  222 ) in a force fit, wherein the angle profile is mountable to the container wall ( 10   a ). 
     
     
         12 . Container wall according to  claim 6 , wherein the upper edge or the upper leg of the profile rail is flush with the container wall ( 14 ). 
     
     
         13 . Container wall according to  claim 6 , wherein the top ( 44 ) of the container wall rises towards the outside. 
     
     
         14 . Container wall according to  claim 6 , wherein the profile rail ( 36 ) arranged in a distance below the top of the container wall ( 14 ) and the outer edge of the wall top is rounded. 
     
     
         15 . Container wall according to  claim 4 , wherein the profile rail is composed of two or more rail sections. 
     
     
         16 . Device according to  claim 6 , wherein the profile rail ( 56 ) consists of rail sections, split in the longitudinal plane, that are positively connected to each other in the web area. 
     
     
         17 . Container wall according to  claim 1 , wherein the clamping channel or the clamping profile ( 36 ,  18   a ,  222 ) is formed by a permanent formwork. 
     
     
         18 . Container wall according to  claim 17 , wherein the permanent formwork is of a rail type ( 36 ,  18   a ,  222 ) or consists of rail sections respectively. 
     
     
         19 . Container wall according to  claim 17 , wherein the permanent formwork consists of shell-like fiber concrete portions ( 42   a ,  46   a ), which are cast into the concrete wall ( 14   a ) or placed onto the concrete wall respectively. 
     
     
         20 . Container wall according to  claim 17 , wherein a positive form of a clamping profile that is U-shaped or C-shaped in the cross section can be detachably mounted to outer formwork elements ( 26 ) and the positive form is made of a plastic material that can be removed from the container wall by heat or a chemical substance. 
     
     
         21 . Outer formwork for the construction of a container wall of concrete that consists of annular arranged flat formwork elements, in particular for the construction of a container wall according to  claim 1 , wherein the formwork elements ( 26 ,  27 ) comprise mounting means for the detachably mounting of a formwork element for a clamping channel or a clamping profile at least partially within the wall or a profile rail, wherein the formwork profile or the profile rail is formed for the clampingly fixation of a rim of a foil that covers the container. 
     
     
         22 . Formwork according to  claim 21 , wherein the formwork elements or the profile rail elements ( 36 ) respectively can be connected with the formwork elements ( 30 ), wherein the length of the rail elements preferably is a multiple of the length of a formwork element ( 30 ). 
     
     
         23 . Formwork according to  claim 21 , wherein the shell-like fiber concrete portions ( 42   a ) can be detachably connected to formwork elements ( 40   a ) and the detachable connection is accessible from outside. 
     
     
         24 . Formwork according to  claim 21 , wherein the formwork profile consists of an upper and a lower profile portion ( 50 ,  52 ), which together form a positive form ( 56 ) for a clamping channel or a clamping profile with undercut respectively, wherein the profile portions ( 50 ,  52 ) can be detachably connected, so that after releasing the connection the profile portions ( 50 ,  52 ) can one by one be removed from the clamping channel or respectively the clamping profile formed in the concrete. 
     
     
         25 . Formwork according to  claim 24 , wherein the detachable connection of the profile portions comprise at least one screw bolt ( 68 ) and a cap nut ( 70 ), wherein the cap nut ( 70 ) is located on that side of the container wall with the profile portions ( 50 ,  52 ). 
     
     
         26 . Formwork according to  claim 21 , wherein the mounting means comprise at least one hole at the top of the formwork elements as well as a plug- or screw connection for a profile holder, wherein the profile holder is designed so that it temporarily fixates a profile rail or a formwork rail to the formwork elements, after curing of the concrete, however, the profile rail or the formwork rail can be brought out of engagement with the formwork element by releasing the mounting means and tilting movement with the profile rail or the formwork rail respectively. 
     
     
         27 . Outer formwork according to  claim 26 , wherein the profile holder comprise a first sheet-metal portion, which engages in an approximately right angle behind protrusions of the profile rail or of the formwork rail, the protrusions limiting an insertion slot for the foil, and comprising a transversally second sheet-metal portion, which is placeable on top of the formwork and comprises a mounting hole that is aligneable to the hole in the formwork element. 
     
     
         28 . Outer formwork according to  claim 26 , wherein the plug-connection comprises a pin and a clamping portion connected thereto for the clampingly fixation of the second sheet-metal portion at the top of the formwork element by rotation of pin and clamping portion. 
     
     
         29 . Outer formwork according to  claim 21 , wherein below the top of the formwork elements and below the clamping profile or the formwork profile C-shaped running rail elements can be connected to the formwork elements. 
     
     
         30 . Outer formwork according to  claim 29 , wherein the running rail elements are connected to the profile rail elements, preferably by welding.