JPH05504120A - stackable barrels - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] stackable barrels The present invention relates to stackable barrels, especially made of thermoplastics, such as polyethylene. or a large-capacity barrel made of steel, with a roughly cylindrical tank wall and upper and lower walls. The bottom of the barrel is , an annular grip ring (handling ring) is provided, and a plate-like flat front At least one of the bottoms has an axially substantially conical or dome-like shape when viewed in cross section. Connected to the tank wall through an annular portion that protrudes beyond the grip ring on the proximal side. Concerning forms that are combined.

Generally known plastic barrels with a stopper have a flat upper and lower bottom. A diagonal conical annular section is connected to the wall (e.g. (Refer to the specification of New Draft No. 8705916) 9 In such a barrel, the annular grip ring Since the grip ring usually also assumes the function of a rolling wheel, the said grip ring has approximately a radius of It extends so as to protrude from the outer tank wall in the direction.

Furthermore, the bottom of the barrel protrudes relatively significantly outward in the axial direction, or the bottom of the barrel is Significantly from said grip ring projecting outwardly through a diagonal conical annular portion are placed at a distance of The axial force load on the grip ring is In any case, this is only possible on a very limited scale. Because this thing This causes bending of the L-shaped ring protruding radially from the tank wall and denting of the tank wall. This is because it will be put away. For such barrel stacking ability, grip rings are completely ineffective. It has no impact.

When stacking such barrels, the stacking negative due to hydrostatic internal pressure formation Load absorption is achieved by changing the conical or dome-shaped annular part of the flat bottom of the barrel. It is only performed after Katago. In other words, in this case, the barrel wall is not directly loaded in the axial direction. Otherwise, the load is applied only after the handling grip ring has been deformed. (See Figures 1 and 2).

Barrels are generally transported on pallets and stacked, with the underside of the pallets being exposed. They do not have a flat mounting surface, but instead have two or three spaced parallel Since it has only one bottom plate, in standard stacking, it is difficult to A uniform loading force cannot be generated on the side sole.

Due to the unilateral or uneven loading created in this way, only one side of the lower barrel This makes the barrels more likely to flex, increasing the risk of the stacked barrels falling over from side to side. I end up getting beaten up.

Furthermore, in other generally known large-capacity stoppered kegs, the tank wall is extended in the axial direction. or the bottom of the barrel is retracted or sunken. The grip ring is constructed by this.

In such barrels, even in the case of general-purpose steel barrels, the absorption of stacking loads is difficult. It is done only by the sexual barrel wall. Therefore, these barrels (plastic If the barrel is made of The circumferential wall allows no or very little axial elastic deformation. like this In normal barrels, there is generally no hydrostatic internal pressure. I don't care about that When internal pressure builds up without any problems, the flat bottom of the barrel bulges outward without any problem; In this case, it is not possible to assume the partial support function of stacked loads. in this case In principle, it depends on whether the barrel is empty or full. Furthermore, it does not matter whether the stopper is tightly closed or open. No. Another disadvantage of such barrels is therefore a correspondingly high empty weight or This is the weight used.

Therefore, a feature of the present invention is the ability to stack large volume barrels, especially the long stacking characteristics. To make it possible to save on barrel material and reduce the empty weight of barrels while improving performance. It is.

In order to solve this problem, in the configuration of the present invention, at least one barrel bottom has a corresponding The height of the protrusion that protrudes outward beyond the grip ring is 1 to 5 times the thickness of the tank wall. I made it equivalent to . This configuration allows multiple barrels to be stacked one above the other. When installed, it is filled with a filling medium (e.g. liquid) and tightly closed in a gas-tight manner. In the lower barrel, the upper residual gas chamber formed below the upper base and the filling medium First, the elastic part of the upper and/or lower part that protrudes outward is Hydros of 0.1-0.3 pearls, advantageously about 0.16 pearls, depending on flexibility. A static internal pressure is established in a precisely reproducible manner, and then at the outer edge of the barrel or introduces a reduced stacking load on the handling grip ring. .

In the barrel according to the invention, an upper barrel ring integrally formed with the barrel peripheral wall near the end face of the barrel is provided. and/or lower barrel rings, which barrel rings are attached to the barrel circumferential wall. , and further includes a flat upper bottom and a lower bottom. and the bottoms of these are axially aligned with respect to the axial end face of the support and conveyor ring. projecting outwards, in this case said bottom through a conical annular outer region It is connected to the barrel wall.

Based on such a configuration, a barrel wall with a radially outwardly projecting flange edge Stacked load absorption in a vertical grip ring configured approximately axially against This is extremely advantageous because it can only be carried out after a defined internal pressure has been built up inside the barrel. Become. That is, in this case, first of all, the defined hydrostatic internal pressure is Only after being made and then radially preloaded is the barrel removed through the grip ring. An axial load is introduced on the circumferential wall. In this case, the grip rings are connected axially. Based on the fact that in point loads, the applied stacked load is proportional to the tank wall. Distributed over a relatively wide circumference. Furthermore, based on the pre-formed internal pressure, the barrel circumferential wall The denting risk is shifted towards higher axial loads. That is, like this These barrels are said to be able to withstand significantly higher stacking loads than conventional barrels. At the same time, the risk of falling is significantly reduced.

Furthermore, if, for example, three 220 liter barrels are stacked, the lower barrels If a prescribed load of about 900 kg is estimated for the I# wall thickness, Consequently, the empty weight of the barrel can be reduced accordingly.

As a result, steel barrels have a wall thickness of 1.0 mm compared to conventional thin steel plates. For example, it becomes possible to use a 0.9 mm thin steel plate. The wall thickness of plastic barrels is For example, it can be reduced from 3.8 mm to 3.3-3.2 mm. child As a result, the weight of empty barrels can be reduced from, for example, 9.0 kg to approximately 8.5 kg, Material simplification of plastic raw materials is obtained.

The barrel according to the invention, by utilizing internal pressure with an additional stabilizing effect, has much more favorable long-term stacking properties than plastic family barrels. . Based on the fact that the bottom of the barrel is axially pressurized and supported by the bottom of each pallet. In this case, the barrel wall only needs to support a reduced stacking load.

In the following, embodiments of the invention will be explained in detail with reference to the drawings.

Figure 1 shows a public It shows the plastic barrel of knowledge, Figure 2 shows the barrels of the known plastic family shown in Figure 1 placed in the lower position when stacked. It shows the load condition when Figure 3 shows a separate Figure 4 shows the known barrel shown in Figure 3, which is lowered when stacked. Fig. 5 shows the plastic according to the present invention in a loaded state when the plastic is placed in the It shows a barrel with a stopper from the Qu tribe. Figure 6 shows how the plastic barrels shown in Figure 5 are placed at the bottom of the stack. The figures are shown under the same load condition. FIG. 7 shows a part of a barrel according to the invention in an increased load condition; Figure 8 shows the maximum load condition when the barrels shown in Figure 7 are placed at the bottom of the stack. Figure 9 shows another covered barrel according to the invention; Figure 10 shows the situation when the covered barrel shown in Figure 9 is positioned lower when stacking. Shown under load.

FIG. 1 shows a relatively thin-walled barrel wall of a generally known plastic family barrel with the symbol lO. It is shown. In this known plastic family barrel, the upper base 12 of the barrel is inclined. It is connected to the barrel peripheral wall 10 via a conical annular portion 14 . conical ring In the transition area from 14 to the barrel wall 10, there is an annular upper grip lip with an angular cross section. A ring 16 is arranged. This barrel has liquid up to the height of Habo grip ring 16. In this case, the outer grip ring 16 is filled with A gas chamber 20 remains free below the upper bottom part 12 which protrudes even higher. Ru.

It is shown in Figure 2. In the load case for the known barrel mentioned above, the upper base 12 Due to the sinking, internal pressure is created in the gas chamber 20 and the filled liquid 18. It will be done. The axial load on the grip ring 16 is not considered in the Enoki case. deer However, the load or deformation on the upper bottom increases and the axial load on the grip ring starts. (This is not done uniformly in practice, but rather on e.g. (mostly done partially or only on one side), The lip ring is lvl that cannot absorb axial force or In this range it bends outward or downward without being able to introduce force into the tank wall. This will accelerate the denting of the barrel wall. This reduces the risk of tipping over of the corresponding barrel stack. is heightened. After the load has disappeared, this handling grip ring is no longer safe. Not completely, but becomes inoperable.

FIG. 3 shows another already known barrel made of comparable thin-walled plastic. ing. The upper grip ring 24 is axially connected to the upper bottom 26 by extension of the tank wall 28. It stands out far beyond that.

As can be seen from Figure 4, in this barrel, the axial stacking load is on the grip ring. It is introduced only through the end face and is received by the tank wall 28. Ru. When the load increases excessively, the grip ring 24 expands in the radial direction due to elastic deformation. It is opened and the barrel body is compressed. As a result, when the internal pressure builds up, the upper base 26 of the barrel (and lower bottom) will expand outward without external resistance (without support for stacked loads). These barrels, made of thin-walled plastic, are expensive in terms of material costs. and has a high working weight.

FIG. 5 shows a tank wall 30 made of relatively cylindrical plastic with a comparatively thin wall; A stoppered barrel according to the invention is shown with an upper base 32 and a lower base 34 . In the peripheral area of the flat upper base 32 there is a shaped filling/draining plug 36. is located. In the area close to the tank wall 30, there is an upper grip ring 38 and a lower grip ring 38. A side grip ring 40 is provided. Upper bottom 32 and lower bottom 34 of the barrel is connected to the barrel circumferential wall via a conical annular portion 42,44. By this and behind the grip ring 38.40 there is a suitable barrel gripper or crane lift. An annular gap 46 is formed for engaging a pawl provided on the hook. To the present invention A very important feature is that in the barrel according to the invention the upper base 32 and/or the lower base 34 protrudes beyond the end face 48.50 of each grip ring 38.40 It is. In the barrel embodiment shown in FIG. 5, the lower side from the upper grip ring 38 Protrusion degree 52 of the bottom portion 32 and protrusion of the lower bottom portion 34 from the lower grip ring 4o degree 54 is approximately twice the wall thickness of the barrel wall 30.

FIG. 6 shows an example of loading a barrel according to the invention with a pallet 56 placed on it. ing. The pallet is applying a compressive force to the barrel with a stacking load P8. stipulated Based on the structure of the tank bottom that protrudes by the dimension, it is filled with filler and tightly closed. An accurately reproducible internal pressure P1 of 0°16 bar is created inside the barrel. Then, axial loading of the barrel wall 30 takes place only after it has been preloaded in the radial direction. this This means that the axial and tangential tensile tensions partially compensate each other and the axial This is advantageous because it does not cause any overlap with the compressive force.

Another advantageous effect is shown in FIGS. 7 and 8. For example, stacking A load is introduced by the closed barrel to open the elastic deformation of the conical cover annular portion 42. When the upper bottom part 32 is compressed at the same time, the tank wall 30 or the upper grille is compressed from the inside. The tank wall located in the connection area 60 between the coupling ring 38 and the annular part 42 for the cover. A pressing force with an additional stabilizing effect acts on 3o in the direction along the radial plane. (see arrow 58). For example, a relatively large negative impact when two barrels are stacked on top of each other. In the load case (Fig. 8), most of the compressive force is applied to the edge of the upper grip ring 38. 48 into the tank wall in the axial direction. The internal pressure P1 formed and the ring for the cover based on the pressing force with an additional stabilizing effect obtained from the shaped portion 42 (both prevention of inward denting or folding of the tank wall), stacking characteristics, especially in the present invention. The long-term stacking properties of the barrels are significantly improved.

As the bottom of the tank is loaded with internal pressure and supported by the bottom of the pallet, the surrounding wall of the barrel is significantly damaged. It is only necessary to accept a properly reduced stack load. Therefore, the general purpose plus Unlike in the case of Chick family barrels, long-term use with material fatigue, aging or loss of strength The reduction in the shape stiffness of the case either does not occur at all or only occurs much later. stomach.

9 and 10, another embodiment of the barrel according to the invention is shown in a covered barrel (wide-mouthed). shown in the form of a barrel).

The upper grip ring 38 is arranged in the area of the outer circumference of the barrel cover 62. barrel hippopotamus The lower circumferential flange 64 of the -62 is a peripheral wall flange that protrudes from the outer tank wall 30. 66. The upper edge of the tank wall 3o has a U-shape provided on the rumor cover 62. A seal ring 68 is disposed in the notch.

A tensioning ring that simultaneously covers the circumferential flange 64 and the peripheral flange 66 of the cover The barrel cover 62 is secured gas-tightly and liquid-tightly to the barrel opening or tank wall by the coupling 70. can be fixed and tightly closed.

In the unloaded case (FIG. 9), the surface of the barrel cover 62 is aligned with the upper grip lip. From the end edge 48 of the ring 38, there is a protrusion 52 approximately three times the thickness of the cover or barrel peripheral wall. have. In the loaded case (FIG. 10), the barrel cover 62 has the high degree of protrusion. As the barrel is pushed inward by the same amount, an internal pressure P is created inside the barrel, causing axial compression. The force is applied from the upper grip ring 38 to the cover flange 64 and the peripheral wall flange 66. It can be introduced into the barrel wall 30 in the axial direction via. In the range 72 close to the flat cover surface is a standard model in which the conical annular portion 42 is constituted by, for example, an annular groove molding. It has a certain crash zone. This crash zone is within this range. Improve the elasticity or flexibility of the barrel cover. In this case too, due to internal positive pressure This covered barrel is also based on a special structural configuration, since reinforcement of the barrel wall takes place. It also has better stacking properties or improved long-term stacking properties. Ru.

Due to the large support diameter (equal to the diameter of the grip ring 38), the Good compressive force distribution, relatively little overall deformation and relatively low lateral stability are obtained. It will be done.

In a variant of the invention, the grip ring is, for example, a prefabricated separate annular part. It can be attached to the outer wall of the barrel by slip-fitting, tight-fitting, gluing and/or welding. may be attached.

Furthermore, the construction of the keg according to the invention in the case of a cask with a stopper each has a grip ring. The upper base or lower base may be prefabricated as entirely separate individual parts. (e.g. injection molded part) and then welded to the cylindrical barrel wall. You can also do that.

at least one annular group arranged on the outer tank wall in close proximity to the corresponding tank bottom; It has a lip ring and a bottom that projects axially outward beyond the grip ring. The improved ability to stack large-volume barrels, especially the long-term stacking ability, is functionally as follows: It can be obtained as follows.

In other words, when barrels are stacked one above the other, the gas leaks into the lower barrels that are sealed in a gas-tight manner. The remaining residual gas chamber and the filling medium or liquid should first be poured into the upper bottom and/or or on the basis of the elastic flexibility of the lower sole, from 0.1 to 0.3 bar, advantageously about 0. ．． A hydrostatic internal pressure of 16 bar is created and then the outer barrel rim Alternatively, a vertical stacking load is introduced into the tank wall via the grip ring. death Therefore, improved stacking properties, especially long stacking properties, can now be obtained. Ru.

An annular grip ring configured as an extension of the tank wall in the axial direction is loaded pointwise. In this case, the resulting stacking loads are distributed over a relatively large circumferential area of the tank wall.

Nine P.

FIG, 7 FIG, 8 Summary book The present invention provides a large tank having a substantially cylindrical tank wall, an upper tank bottom, and a lower tank bottom. Concerning stackable barrels. Improve stacking ability, especially long-term stacking ability For purposes, when multiple barrels are stacked one above the other, the upper barrels are For gas chambers and filling media.

First, the elastic flexibility of the lower tank bottom (32) and/or the lower tank bottom (34) Due to the , support is provided via tubing rings (40). (Figure 5) international search report

Claims (1)

[Claims] 1. A large volume stackable barrel, the barrel having a substantially cylindrical wall and an upper barrel bottom. A lower barrel bottom is provided, and the barrel is at least close to the upper barrel bottom. An annular grip ring (handling ring) is provided on the outer peripheral wall, and the plate-shaped front At least one of the barrel bottoms has an axially substantially conical or dome-like shape when viewed in cross section. A type that is connected to the barrel wall through an annular portion projecting outwardly. and at least one barrel bottom protrudes beyond said grip ring (38, 40). The height of the protrusion (52, 54) is determined by the height of the barrel wall (30) or the barrel bottom (32). , 34), which corresponds to 1 to 5 times the wall thickness of the barrel. , conically outwardly of the upper barrel base (32) and/or the lower barrel base 134). At least one of the protruding annular portions (42, 44) is elastically deformed. In this case, firstly, hydros, which has a supporting effect, is placed inside the barrel. A static internal pressure is created after which the grip ring (38, 4) on the outside is 0) or the stacked load is introduced into the outer barrel wall (30) via the barrel edge. A stackable barrel characterized by the following. (Figures 5 and 6)2. Only the upper barrel bottom (32) has an elastically deformable annular portion (42) and a substantially cylindrical portion. an upper grip ring (38) located on an extension of the barrel wall (30); and the lower barrel bottom (34) is aligned with the lower grip ring (40). Claims configured in a plane or transitioning almost directly into the barrel wall (30) Barrel according to item 1. (Figures 7 and 8) 3. The upper barrel bottom (32) is the upper grip. The height of the protrusion (52) that protrudes beyond the ring (38) is determined by the barrel wall (30) or corresponds to approximately 3 to 4 times the wall thickness of the upper barrel bottom (32). is the barrel described in 2. 4. The upper barrel bottom (32) has a protrusion that projects beyond the upper grip ring (38). The height of the protrusion (52) corresponds to approximately three times the thickness of the barrel wall (30), and the lower part The height of the protrusion of the barrel bottom (34) beyond the lower grip ring (40) Barrel according to claim 1, characterized in that the wall thickness corresponds to approximately 1 to 2 times the wall thickness of the barrel wall (30). 5. Both barrel bottoms (32, 34) protrude beyond both grip rings (38, 40) The approximately cylindrical annular portion (42, 44) defines the height of the protrusion (52, 54). ) is an elastically deformable crush zone with e.g. annular ring groove molding. 5. Barrel according to any one of claims 1 to 4, configured as a. (10th figure) 6. said grip ring (38) extending generally axially in extension of the barrel wall (30); It is constituted by an annular piece (75), which annular piece has a radially outward facing flange. a flange edge (74), said annular piece () of said grip ring (38); 75) and the conical annular portion (42, 44) of the barrel bottom (32, 34). Claims 1 to 5, wherein a wedge-shaped gap (46) is formed when viewed in cross section. A barrel described in any one of the following items. (Figures 5, 6, 7, 8, 9, Figure 10) 7. The upper edge of the stopper (36) is flush with the outer surface of the upper barrel bottom (32). be constructed flush with the outer surface or slightly recessed. 7. A barrel according to any one of claims 1 to 6. (Figure 5) 8. at least one annular ring located on the outer barrel wall in close proximity to the corresponding barrel bottom; at least one grip ring protruding axially outwardly beyond the grip ring. The ability to stack large volume barrels with one barrel bottom, especially for long periods of time. In the method of improving, when stacking multiple barrels one above the other, In the gas-tightly closed lower barrel, the remaining residual gas chamber (76) and the filling medium or is first added to the liquid (18) in the upper barrel bottom (32) and/or the lower barrel bottom ( 34) based on the elastic flexibility of 0.1 to 0.3 bar, advantageously about 0.16 Forms hydrostatic internal pressure of the crowbar, Thereafter, the barrel wall (30) is connected via the outer barrel edge or grip ring (38). In order to improve the stacking properties, especially for long stacking times, vertical stacking loads are introduced. Improved stacking ability of large volume barrels, characterized by obtaining stacking properties. How to do it. 9. An annular grip ring (3) configured as an extension of the barrel wall (30) in the axial direction 8, 40) is loaded pointwise, the resulting stacked load is compared to the barrel wall (30). 9. The method according to claim 8, wherein the target is distributed over a large circumferential area.