DK154131B - CLOSE TO FLEXIBLE CONTAINERS - Google Patents

Description

BACKGROUND OF THE INVENTION The invention relates to a closure for flexible containers of a hose or bag-shaped article for transporting and storing liquid or bulk goods, which closure comprises a clamping means consisting of several rods which can be fixed relative to each other, and of at least one a further rod provided with a locking element which is secured at the circumference thereof to secure the mouth portion of the container closed by unwinding on a winding rod against unrolling from this winding rod.

Such containers have a volume pi e.g. 1000 i or 2000 i and preferably used in emergency cases where they e.g. serves to supply the population with drinking water. However, they are suitable for example. also for the storage of drinking water or wastewater on ships or for the storage of other liquids. The transport of the containers is usually carried by trucks, the maximum permissible weight of which must not be exceeded. Therefore, when using smaller trucks, it may not be necessary to fill the container completely. In this case, however, the dynamic mass forces of the liquid while driving may pose a danger to the vehicle, and therefore a closure is required, with which the volume of the container which is not filled can be reduced or completely eliminated.

Furthermore, it is precisely for the sake of rapid use in emergency cases that the closure is as simple as possible to operate. In many cases, a space-saving design of the closure as possible may be necessary for e.g. to allow stacking of several containers on top of each other.

A closure of this kind suitable for these purposes is known e.g. from German Publication No. 3,004,884. The closure known from this publication consists of superposed clamping means which are held at the ends in holders in such a way that an end of the tubular or bag-shaped blank can be passed through spaces between the clamping means. The clamping means are arranged in a displaceable direction towards each other and arranged to be able to be clamped against each other by means of clamping means which can be inserted into each holder.

A disadvantage of this known closure is that it consists of relatively many individual parts, which makes operation difficult and increases the possibility of malfunctioning. Furthermore, this closure is of relatively large dimensions and makes stacking of several containers on top of each other difficult. The large dimensions of this known closure are especially a disadvantage of containers with a smaller volume.

A closure of the kind in question is also known from French Patent Specification No. 1,458,178. This closure has a winding rod on which the container opening portion of the container to be closed is wound. After the winding of this section on the winding rod, a clamping element is placed along the side. In order to prevent the container opening section wound on the winding rod from being unwound again by the winding rod, a reeling lock in the form of a clamping means is inserted into the winding rod.

A similar closure is known from French Patent Specification No. 78,061. This known closure also has the disadvantage that it consists of relatively many individual parts which make operation difficult and increase the risk of malfunction. Furthermore, it is a major disadvantage that it is difficult and cumbersome to wrap the container opening section up on the winding rod, and in this case it must be particularly observed that the opening section is not skewed upwards on the winding rod. In addition, this known closure does not provide absolute security against leaks after the opening of the opening section on the winding rod, so that leaks can occur especially at high internal pressure in the container. Finally, the disadvantages already described with regard to the handling of the closure and its space requirements have not been eliminated by this known closure.

The object of the invention is therefore to provide a closure of the kind mentioned above, in which the winding of the opening portion of the container on the winding rod is facilitated and which even at high internal pressure in the container ensures complete tightness of the closed container opening and furthermore has smaller dimensions. than the known closures mentioned.

This task is solved according to the invention in that the winding rod is formed with a slot adapted to receive parts of an upper part and a lower part of the container which, with at least two bends around the edges of the winding rod of the slot, are tightly tightened and without folds at least 270 ° about the winding rod.

The advantage of this closure is that the winding on the winding rod of the container opening section of the container to be closed is facilitated by the slot in the winding rod. During winding, the container opening section must only be inserted into the slot, after which, at a rotation of 90 ° of the winding rod, no longer can a sliding of the container opening section of the winding rod. If only a small volume of the container is needed, the slot makes it particularly easy to wrap the container opening section several times around the winding rod. A further advantage is that by means of the slot a clamping edge is formed which even at a high internal pressure in the container seals it effectively. It is a further advantage that the closure consists of only a few parts and thus has a greater functional security. Furthermore, the closure has a substantially smaller weight than the known closures.

According to the invention, the rolling securing element may conveniently be constituted by a clamping element in the form of a rod parallel to the winding rod which abuts the wound upper and lower part of the container and by means of clamping screws connected to the winding rod.

In accordance with the invention, the clamping member can be formed as a rail with a U-shaped profile for partial or complete uptake of the winding rod. This embodiment has the advantage that the upper and lower parts of the flexible container to be closed are clamped against the slotted bar at two edges of the U-shaped profile, thereby obtaining that the closure is extra tight.

According to another embodiment of the closure according to the invention, the unrolling securing element may consist of two square tubes or profile bars parallel to the winding rod which abut from the side of the winding rod against the upper and lower part of the container and between each end of the slot and each end of the winding rod. are connected to each other by means of tensioning screws extending through the winding rod.

According to a further embodiment of the closure according to the invention, the unrolling securing element may be constituted by a sleeve which can be slid into the winding rod so that it can grasp the wound container opening section and in the preloaded position can be removably fixed relative to the winding rod. In designing the roll-off securing element as a sleeve, a fast and reliable fixation of the container opening portion wound on the winding rod is obtained. Additional elements, such as clamping screws that can be removed when the closure is open and during the cleaning of the container, are not necessary. The sleeve can be slid onto the winding rod in the axial direction thereof. As the casing in the preloaded position is removably fixed, the rolled-up container opening portion cannot be loosened by itself, and thus the container is reliably closed. The operation of the closure is further facilitated and functional safety increased.

According to the invention, the casing can advantageously be held retractably on the winding rod in that both the casing and the winding rod have a cross sectional profile which differs from a circular cross-sectional profile. For this, the cross-sectional profile of the sheath and the winding rod may be square, preferably square, or oval. In this particular design of the cross-sectional profile, special means for securing the casing and winding rod against mutual rotation can be omitted.

According to another embodiment of the closure according to the invention, the sheath and the winding bar with both parts have engaging means for securing the parts against rotation with respect to each other. To this end, the end of the sheath may be provided with a notch in which a pin located at the relevant end of the winding rod engages in a radial direction. This embodiment also allows the use of a winding rod and a sleeve of round cross section. In a preferred further embodiment, the sheath has a longitudinal longitudinal slot in which a pin extending in radial direction, which serves as a securing means for securing mutual rotation between the sheath and the winding rod, engages the end of the winding rod. It is particularly advantageous here, if according to a further embodiment, each end of the longitudinal slot serves to receive a pin located at the corresponding end of the winding rod. In this way, in addition to the casing not having to be designed with an extra notch, the longitudinal slot together with the pins for guiding the casing is obtained by its pushing on the winding rod. This prevents the casing from rotating with respect to the winding rod during the push-up.

According to a further characteristic of, closed according to the invention, the sheath consists of an elastic material and is in frictional engagement with the outside of the wound container opening section. Preferably, the longitudinal slot has a width which is less than the thickness of the collapsed container opening portion so that the longitudinal edges of the longitudinal slot of the casing abut the outer sides of the collapsed container opening portion. This reduces the risk of accidental displacement of the sheathed casing relative to the winding rod.

According to a further feature of the closure according to the invention, the opening of the casing opposite to the insertion opening located at one end is closed by means of a plate. This plate serves as a stop and in a simple way ensures the correct positioning of the casing upon its pushing in axial direction on the winding rod.

According to a further embodiment of the closure according to the invention, this may have two casings slidable at each end of the winding rod, each having a length less than half the length of the winding rod. Thereby, the fixing of the container opening portion wound on the winding rod is simplified, in that a casing corresponding to the entire length of the winding rod is not to be pushed, but only two small casings which are pushed into each end of the winding rod. This is particularly advantageous for wide container openings where, due to the length of the casing, a large frictional resistance occurs upon its pushing.

According to a further embodiment of the closure according to the invention, the sheath has a U-shaped cross-sectional profile and can be pushed across the axial direction of the winding rod and has at each end provided sliding means preventing sliding of the sheath opposite to its shear direction. The anti-slip device can be a swivel, swivel bolt attached to the sheath which grips behind the winding rod.

The anti-slip device may also be a ring that can be inserted into the end of the case. The U-shaped casing is used for closing wide container openings where a very large frictional resistance would occur upon axial pushing of the casing.

In the drawing, embodiments of the closure according to the invention are illustrated. In the drawing: FIG. 1 is a side view of a filled flexible container with a closure according to the invention; FIG. 2 is a plan view of the embodiment of FIG. 1; FIG. 3 is a section along line A-A of FIG. 2 through a first embodiment of the closure with a clamping element; FIG. 4 is a section along line A-A of FIG. 2 through another embodiment of closed with a square tube; FIG. 5 is a section along line A-A of FIG. 2 through a third embodiment with a sleeve and square cross sectional profile; FIG. 6 is a section along line A-A of FIG. 2 through a fourth embodiment with a sleeve and with a triangular cross-sectional profile; FIG. 7a is a section along line A-A of FIG. 2 through a fifth embodiment with a casing and with a circular cross-sectional profile; FIG. 7b is a plan view of the end of the embodiment of FIG. 7a with a rotation lock, FIG. 8a is a section along the line A-A of FIG. 2 through a sixth embodiment with a U-shaped sleeve; FIG. 8b is a side view of a portion of the device shown in FIG. 8a with a bolt as shear protection; FIG. 9a is a section along the line A-A of FIG. 2 through a to FIG. 8a, but with a ring as shear protection; and FIG. 9b is a plan view of the closure of FIG. 9a with the end mounted ring.

The FIG. 1 and 2, the bag-shaped flexible container 1 consists of an upper part 2 and a lower part 3 which e.g. by adhesive or welding are connected to each other at their two longitudinal sides and at one end. The upper part 2 is provided with a filling opening 4. The other end of the container 1, which opens into a neck 6, serves as the container opening 7. The container opening 7 is closed by means of a closure 8.

Upon closing of the container 1, the neck 6 is passed through the winding rod 10, which is provided in the middle with a slot 9, after which the neck, when turning the winding rod 10 in the direction towards the middle of the container at the position shown in FIG. 3 is rolled as tightly and without folds as possible at least 360 ° onto the winding rod. By further turning the winding rod, the layers of the container opening 7 can also be made to overlap. Below, the neck 6, as seen in FIG. 3, be bent at several places. When the neck is rolled up on the winding rod as desired, the rolled neck can be fixed by tightening the tensioning screws 13 which are placed near the ends of the winding rod 10. The tensioning screws 13 are passed through a clamping member 12 with a U-shaped cross sectional profile and through the winding rod 10 and tensioned. eg. using a nut.

In the FIG. 4, the container opening is rolled up at least 270 ° onto the winding rod. Here, the fixing element is in the form of two square tubes 14 which are connected by means of clamping screws 15 which are passed through the winding rod 10 outside the slot 9.

FIG. 5-9 show further embodiments of the closure 8, which differ in particular from each other by the fixation element. The empty container Vs collapsed container rib 7 is also slid here into the slot 9 in the winding rod 10, so that the edge of the container opening 7 lies within the winding rod 10. For fixing the container opening 7 wound on the winding rod 10, the sliders in FIG. 5-9 a sleeve 9 with a longitudinal slot 21 in axial direction on the winding rod '10 and grips the wound container opening 7. This sleeve T6 *'s longitudinal slot 21 will touch with its two longitudinal edges against the upper part 2 of the container V and sub-section 3. In fig. 5, both the winding rod 10 and the casing 16 have a square cross-sectional profile so that both parts are removably fixed relative to each other. In this way, the container opening 7 is closed, with the slotted casing 16 ensuring that the container opening 7 can no longer be detached from the winding rod 10.

In the embodiment shown in FIG. 6, the cross-sectional profile of both the winding rod 10 and the casing 16 is triangular. Here, too, the two parts are fixed removable in relation to each other.

In the embodiment shown in FIG. 7a of the closed 8 embodiment, the winding rod 10 and the casing 16 have a circular cross sectional profile, so that in this embodiment an extra pivot lock must be used. This is shown in FIG. 7b. The end of the casing 16 is provided with a notch 20, in which, after the casing of the casing 16, a pin 19 "serving as a torque retaining device", which is located at the relevant end of the winding rod 10 g, extends in the radial direction. Here, too, the longitudinal slot 2Λ of the casing 16 can serve as notch 20. In this case, the longitudinal slot 21 also serves as a guide when pushing the casing 1¾.

In the embodiment shown in FIG. 8 and 9, the casing 16 has a U-shaped cross-sectional profile and is whisked across the axial direction of the winding rod 10l, i.e. from the right of the drawing. In order to prevent the casing 16 from sliding on the container opening 7 wound on the winding rod 10, an additional shear protection is provided. For this, in FIG. 8b of the casing 16 is arranged a pivotal bolt 17 which, before and during the casing 16 of the casing 16 on the winding rod 10, is in the position shown in broken lines. After pushing, the bolt 17 is turned downwards, thereby preventing the sleeve 16 from loosening. Another possibility is shown in fig. 9a and 9b, wherein on each end of the casing 16 a hoop-shaped ring 18 is fitted.

In the. In the illustrated embodiments, the container 1 is bag-shaped so that only one closure is required 8. However, it is also possible as container 1 to use a hose-shaped workpiece open at both ends, in which case two closures 8 are required. Thus, the volume of the container 1 can be reduced. from both sides to a specific volume.

Claims (19)

1. A flexible container (1) closure (8) for a hose or bag-shaped workpiece in: the transport and storage of liquid goods or bulk goods, which is constituted by a clamping member (11) consisting of several rods, veins may are fixed in relation to each other, and by a securing element (12,14,16) provided with at least one further rod, which is secured to the container by winding on a winding rod (10) against unrolling from this winding rod (10). the circumference thereof, characterized in that the winding hose (10) is formed with a slit (9) arranged to receive portions of an upper part (2) and a lower part (3) of the container which with at least two bends around the edges of the winding rod (10) formed by the slit are rolled tightly and without folds at least 270 ° about the winding rod (10). A closure according to claim 1, characterized in that the unrolling securing element is constituted by a clamping element (12) in the form of a rod parallel to the winding rod (10), which abuts against the wound upper and lower part (2,3) of the container (1). ) and by means of clamping screws (13) are connected to the winding speng (10). A closure according to claim 2, characterized in that the clamping element (12) is formed as a rail with a U-shaped profile for partially or completely accommodating the winding rod (10). A closure according to claim 1, characterized in that the unrolling securing element is constituted by two square tubes (14) parallel to the winding rod (10) or profile rods abutting the upper and lower part (2,3) on each side of the winding rod (2,3). ) of the container (1) and between each end of the slot (9) and each end of the reel bar (10) are connected to each other by means of clamping screws (15) extending through the reel bar (10). A closure according to claim 1, characterized in that the unrolling securing element is constituted by a sleeve (IBS) which can be slid into the winding rod (10) so that it can engage the wound container opening (7) and be fixed in the suspended position. extendable relative to the winding rod (10). Closure according to claim 5, characterized in that both the sheath (16) and the winding rod (10) have a cross sectional profile which differs from a circular cross sectional profile. Closure according to any one of claims 5 and 6, characterized in that the cross-sectional profile of the casing (16) and the winding rod (10) is square, preferably square. Closure according to any one of claims 5 and 6, characterized in that the cross-sectional profile of the sheath (16) and the winding rod (10) is oval. A closure according to any one of claims 5 and 6, characterized in that the sheath (16) and the winding rod (10) have engaging means for securing the parts against rotation with both parts. Closure according to claim 11, characterized in that the sheath (16) for securing the sheath against rotation with respect to the winding rod (10) is provided at its end with a notch (20) in which one at the relevant end of the winding rod ( 10) positioned and radially extending tabs (19) engage. A closure according to claim 5, characterized in that the casing (16) has a longitudinal longitudinal slot (21) in which one as a securing means for securing against rotation between the casing (16) and the winding rod (10) serving at one end. The tab (19) extending in the radial direction arranged by the winding rod (10) engages after the whipping of the sheath (16). Closure according to claim 11, characterized in that each end of the longitudinal slot (21) serves to receive a pin (19) arranged at the corresponding end of the winding rod (10). Closure according to any one of claims 5-12, characterized in that the casing (16) consists of an elastic material and is frictionally engaged with the outside of the wound container opening (7). Closure according to claim 13, characterized in that the longitudinal slot (21) has a width which is slightly smaller than the thickness of the collapsed container opening section (7), so that the longitudinal edges of the longitudinal slot (21) in the casing (16) follow the casing of the casing. shooting abuts the outside of the collapsed container opening section (7). A closure according to any one of claims 5-13, characterized in that the opening of the casing (16) which is opposite to that at one end of this insertion opening is closed with a plate. A closure according to any one of claims 5-14, characterized in that it has two sliding sleeves (16) on each end of the winding rod (10), each having a length less than half the length. of the winding rod (10), A closure according to any one of claims 5 and 6, characterized in that the casing (16) has a U-shaped cross-sectional profile and can be pushed across the folding rod (10). axial direction, such that, at each end of the sleeve "(Π6), sliding means are provided which prevent sliding of the sleeve (16) opposite its direction of impact. A closure according to claim 17, characterized in that it has as a slip-lock a pivot hinged (16) hinged swivel (17) which engages behind the winding rod (10). A closure according to claim 17, characterized in that it has a ring (18) which can be slid into the end of the casing (16) as a slip guard.