EP0471918A1 - Wide-necked conical steel drum - Google Patents

Abstract

The invention relates to a wide-necked conical steel drum (10) having a large upper filling and removal opening (12) which can be sealed fluid-tightly by means of a lid (14) and clamping ring (16). During transportation of nested drums (10) of this type, they are sometimes shaken inside one another to such a great extent that later unstacking or separation of the individual drums (10) can cause great problems. In order to accomplish easy and damage-free unstacking of these steel drums (10) by only one operator, provision is made according to the invention for each steel drum (10) to have at least one bung-hole opening (26) in the bottom (24), which opening can be sealed fluid-tightly by means of a lid. By means of an unstacking device, inserted in the bung hole (26), nested drums (10) can be separated easily. Furthermore, the bottom bung hole (26) is advantageous in the reconditioning or rinsing of the drums (10) for multiple use. <IMAGE>

Description

The invention relates to a conical wide-necked steel drum with a large upper filling or emptying opening, which can be closed in a liquid-tight manner by means of a lid and clamping ring, the wall of which in the vicinity of the upper filling opening has a circumferential, outwardly directed bead (outer bead) which, when stacked together, has at least one two or more such empty steel drums in the upper steel drum stacked on the inside serves as an outer support edge on the inner edge of the upward-opening fill opening of the stacked second steel drum.

Such barrels or comparable large-volume buckets are generally known.

Conical wide-necked containers have the advantage that they can be stacked one inside the other as empties, thereby resulting in low storage costs and in particular low transport costs for these bulk articles.

When transporting stacked barrels, they are sometimes shaken into each other so much that later unstacking or dismantling of the individual barrels poses great problems and at least two people are required for this. Aid measures such as Hammer blows on the flanged flange edge or lid support edge of the stacked barrel are necessary to separate two wedged barrels from each other. With such time-consuming and personnel-intensive efforts, however, damage to the barrel body or edge of the filler opening can easily occur, which favors a later barrel leakage.

Proceeding from this, it is an object of the present invention to provide a configuration for conical wide-necked steel drums, in particular for large-volume and thus also heavy-weight steel drums, which enables easy and damage-free denesting of these steel drums by only one operator.

This object is achieved in that each steel drum has at least one bunghole opening that can be closed in a liquid-tight manner by means of a cover. This then gives you the option of using a tool such as to insert a pulling device or a rotating spindle through the floor or the bunghole opening provided there of the stacked barrel and to press out the fixed inner barrel used without damage with little effort by a single operator.

The closable bunghole opening is expediently designed as a small 3/4 "bung and arranged centrally in the underbody. This ensures that the barrels can be destacked without being tilted. In principle, however, it would also be conceivable, for example, two diametrically opposed or several symmetrically arranged closable closures Provide bung holes in the drum underbody in order to be able to use these bung holes to apply a uniform tilt-free force of a corresponding unstacking device.

With the additional bunghole opening arranged centrally in the underbody there is the great advantage that the reconditioning of the drums, which are intended and particularly suitable for multiple use, considerably simplifies the cleaning process. A slightly outwardly curved design of the underbody ensures that no washing liquid remains in the barrel, but runs out completely through the bung. The large upper filling opening ensures good access for cleaning devices such as rotating brushes or steam jet devices are guaranteed and the washing liquid can run out completely without the drums having to be tilted upside down or specially handled.

For the steel barrels according to the invention, it is expedient if the barrel wall above the bead is cylindrical to the flanged edge of the upper filling opening and below the bead is slightly conical to the barrel bottom or almost to the barrel bottom, the taper of the barrel wall being between 5.5% and 11%, preferably about 7%. This results in better stability and space savings with filled and closed lid drums.

The conical steel drums according to the invention are, in particular with a capacity of 200 l, for use in the food sector, e.g. intended for the transport of tomato extract, oils, fats or fruit concentrate. But also in the chemical industry for the transport of chemical products, the large-volume conical wide-necked steel drum is particularly suitable for solid and liquid dangerous goods.

A very special area of application for the steel drum according to the invention as a so-called "honeytainer" is in the transport of honey from distant export countries. The good stackability results in an enormous space span during transport and in the storage of empty lid drums with comparatively significantly lower costs, so that, for example, long overseas transports of such conical steel drums become economically viable or possible. With a large container or a truck with a size of 100 m ³ transport volume, for example, only 292 conventional (not stackable) lid drums, but 936 stacked conical lid drums can be delivered; this saves about 70% in transport costs reached.

• Das konische Stahlfaß wird kurzzeitig von außen erwärmt, z.B: mit Dampf- oder Heißwasserbeaufschlaung, so daß der Honig auf der Faßinnenwandung als dünner Film aufschmilzt und dünnflüssig wird. Zusätzlich kann an das Spundloch im Unterboden des Weithals-Stahlfasses ein Gasdruckschlauch angeschlossen und der feste Honigblock mit Hilfe des anstehenden Gasdruckes aus dem sich in Überkopfposition befindlichen Faß gedrückt werden.

The following problems arise when transporting honey in large-volume barrels: The honey is usually in the form of a solid block, which is normally very difficult to remove from the barrel. The following advantageous method variant is available when using lid drums according to the invention:

• The conical steel barrel is briefly heated from the outside, for example with steam or hot water, so that the honey melts on the inside of the barrel as a thin film and becomes thin. In addition, a gas pressure hose can be connected to the bunghole in the underbody of the wide-neck steel barrel and the solid honey block can be pressed out of the barrel in the overhead position with the help of the gas pressure.

However, the use of gas or liquid pressure (e.g. water or compressed air) through the bunghole in the bottom of the barrel can also be used in the same way, for example, to unstack stacked barrels or to loosen wedged barrels.

The invention is explained and described in more detail below with reference to exemplary embodiments shown in the drawings.

• Figur 1 ein erfindungsgemäßes konisches Weithals-Stahlfaß mit Deckel und Spannring in Seitenansicht mit Teilschnitt-Darstellung,
• Figur 2a in Längsschnitt-Teildarstellung einen vergrösserten Abschnitt der oberen Faßwandung mit Deckel und Spannring,
• Figur 2b in Längsschnitt-Teildarstellung einen vergrösserten Abschnitt der unteren Faßwandung mit Verbindungsbereich zum Unterboden,
• Figur 2c einen zentralmittig im Unterboden angeordneten Bodenspund,
• Figur 2d eine Teilansicht eines Spannringes mit innenliegender Verschlußmechanik,
• Figur 3 eine perspektivische Ansicht eines konischen Deckelfasses mit aufgesetztem Deckel und Spannring und
• Figur 4 eine perspektivische Ansicht von zwei ineinandergestapelten Stahlfässern mit davor positioniertem Deckel und Spannring.

Show it:

• 1 shows a conical wide-necked steel drum according to the invention with a lid and clamping ring in a side view with a partial section,
• FIG. 2a shows an enlarged section of the upper barrel wall with cover and clamping ring in a longitudinal section,
• FIG. 2b shows an enlarged section of the lower barrel wall with a connection area to the underbody in a longitudinal section,
• FIG. 2c shows a floor bung arranged centrally in the underbody,
• FIG. 2d shows a partial view of a clamping ring with an internal locking mechanism,
• Figure 3 is a perspective view of a conical lid barrel with attached lid and clamping ring and
• Figure 4 is a perspective view of two steel barrels stacked one inside the other with the lid and clamping ring positioned in front of it.

In FIG. 1, reference number 10 denotes a conical 200 l wide-neck steel barrel according to the invention, which is designed as a so-called "honeytainer".

The steel drum 10 has a large upper filling or emptying opening 12 which is closed in a liquid-tight manner by means of the cover 14 and clamping ring 16. In the vicinity of the upper filling opening 12, the barrel wall 18, 28 has a circumferential, outwardly directed bead 20 (outer bead).

The barrel wall 28 is cylindrical above the bead 20 up to the flanged edge 22 of the upper filling opening 12 and the barrel wall 18 below the bead 20 is slightly conical up to almost the barrel bottom 24. The taper of the barrel wall 18 is between 5.5% and 11%, preferably about 7%.

The flanged edge 22 at the upper fill opening 12 of the steel barrel 10 serves as a support for the lid edge and as a counter bearing for the clamping ring 16.

In the underbody 24, a bunghole opening 26 which can be closed in a liquid-tight manner by means of a cover (e.g. screw cap) is provided. The bunghole opening 26 is expediently equipped with a 3/4 "bung or a 2" bung with an internal thread, depending on the barrel size, for screwing in a bung plug.

A suitable unstacking device can be used by installing the bung opening in the bottom of the barrel. The bottom bung opening also facilitates the cleaning process during reconditioning.

• Konischer Mantel, Längsnaht geschweißt, mit Flachsicke (oder Rundsicke), Boden aufgefalzt, Deckel und Spannring abnehmbar, innen roh oder einbrennlackiert, außen lackiert, falls gewünscht mit Polyethylen-Inliner PE, z.B. 0,3 mm stark.

The technical brief description for a 200 I wide neck steel barrel is as follows:

• Conical jacket, longitudinal seam welded, with flat bead (or round bead), rebated bottom, removable cover and clamping ring, raw or stove-enamelled inside, painted outside, if desired with polyethylene inliner PE, e.g. 0.3 mm thick.

Dimensions: upper outside diameter (measured via clamping ring): 610 mm; lower outside diameter: 516 mm; upper inner diameter: 571.5 mm; Internal height: 870 mm; External height: 880 mm; Diameter measured over fold: 582 mm; Flat bag width: 44 mm; Unit weight depending on the sheet thickness (between 1.5 to 0.7 mm) from approx. 21.2 kg to 13 kg; Lid weight approx.3.7 kg and ring weight approx.1.0 kg.

The outwardly shaped stack bead 20 can, however, also be made narrower (e.g. only about 25 mm wide) or as a conventional round bead.

The barrel body 18, 28 of the steel barrel 10 is preferably made from a cylindrical blank which is stretched or expanded by a smaller diameter (for example approx. 514 mm) to the conically expanding barrel shape with larger diameters (up to max. 572 mm ) was expanded.

A second, but inwardly directed bead 30 (bead) can be provided in the lower region of the conical barrel wall 18. Through the second bead drawn inwards - in Figure 1 only indicated by dashed lines - the barrels not only hang in the upper corrugation, but can also stand on the lower inner corrugation when stacked one inside the other.

The individual features of the steel barrel 10 according to the invention are shown enlarged in partial view in FIGS. 2a to 2c. 2a, a lid seal 48 is arranged in the lid edge 52 of the barrel lid 14, which seals the barrel 10 in a gas- and liquid-tight manner against the flange edge 22 of the upper filler opening when the lid 14 and the clamping ring 16 are attached. In the case of a 200 l drum, the lower edge of the flat bead 20 is spaced approximately 130 mm from the flanged edge. If two barrels are stacked one inside the other, the upper barrel protrudes from the stacked barrel by this amount. The upper edge of the flanged edge 22 'of the stacked drum 10' comes to rest against the lower edge of the stacking bead 20 of the drum 10 stacked at the top.

From Fig. 2b it can be seen that the barrel wall 18 in the vicinity of the outward connecting bead 32 (triple fold) between the underbody 24 and the barrel wall 18 is additionally tapered or reduced in diameter, the connecting bead 32 between the underbody 24 and the barrel wall 18 lies within an imaginary extension of the conical barrel wall 18. The inclination of the conical barrel wall 18 to the barrel longitudinal axis is approximately 1.5 ° and the inclination of the short lowest wall area 50 in front of the bottom fold 32 to the barrel longitudinal axis is approximately 15 °.

The barrel bottom 24 is inserted in the connection area with the barrel wall (50) at a certain distance from the bottom rebate 32, so that when the sheet cap is screwed into the central bottom bung hole 26 and in particular when the barrel bottom is slightly convex (slightly convex), there is no pressure on the bottom bung -Lid is exercised.

The bung opening 26 shown in FIG. 2c (eg 3/4 "bung) in the barrel bottom 24 or the corresponding bung plug is preferably provided with a temperature-resistant S-seal, since the steel barrels are suitable for multiple use (e.g. five to ten times) or reusable use is envisaged and temperatures of up to 200 ° C can easily occur when cleaning the drums with, for example, steam jet devices.

In Fig. 2d a clamping ring 16 is shown with an internal locking mechanism 38. The internal locking mechanism 38 used to improve the rolling properties of the barrels here consists of a tensioning screw 40 acting between two flange attachments 42, 44.

The locking mechanism could, however, also be designed as a conventional tensioning lever lock, as with external tensioning rings.

FIG. 3 shows a perspective view of a 200 liter honey barrel 10 with a lid 14 attached and a tension ring 16 with an external tension lever lock 46. The stack bead 20 between the upper cylindrical barrel wall 28 and the lower conical barrel wall 18 is designed here as a narrow flat bead.

In the perspective illustration according to FIG. 4, two barrels 10, 10 'are stacked one inside the other. The barrels 10, 10 'are provided here with a conventional circular bead 20, 20' as a stack bead.

In the upper barrel 10 is a thin-walled inliner 54 e.g. made of polyethylene (PE), which facilitates and accelerates the reconditioning of the barrels for certain strongly adhering contents.

The associated tension ring 16 is provided with overlapping tension ring ends and a strong tension lever lock 46, as a result of which leakage is avoided even when the barrels are at higher heights.

In a preferred embodiment, the lid is provided with at least one closable bung hole for easy sampling of the barrel contents.

In the present case shown, two opposing cover piles of different sizes are provided, e.g. a large 2 "bung 34 and a small 3/4" bung 36. In a simple embodiment, however, only a centrally located bung - then preferably a large 2 "bung - could be provided in the cover 14.

From the above description, the advantageous design and economic importance of the wide-necked steel barrel according to the invention with a central floor bung in the barrel underbody and the possibility thus provided for attaching a corresponding unstacking device for problem-free, simple and damage-free disassembly (unstacking) of such conical barrels stacked one inside the other for inexpensive transport purposes becomes clear, especially if the barrels already show signs of wear such as slight dents or the like after multiple use.

REFERENCE SIGN LIST

• 10 conical wide neck steel barrel
• 12 upper filling opening
• 14 lid
• 16 tension ring
• 18 barrel wall
• 20 beading on the outside
• 22 edging (12)
• 24 underbody
• 26 bung opening
• 28 cylindrical barrel wall
• 30 inner corrugation
• 32 connecting bead (18/24)
• 34 large bung
• 36 small cover bung
• 38 locking mechanism
• 40 clamping screw
• 42 flange attachment
• 44 flange attachment
• 46 cocking lever lock
• 48 cover gasket
• 50 base piece 18
• 52 lid rim
• 54 inline skates

Claims (10)

1. Conical wide-necked steel drum with a large upper filling or emptying opening, which can be closed in a liquid-tight manner by means of a lid and clamping ring, the wall of which in the vicinity of the upper filling opening has a circumferential, outwardly directed bead (bead) which, when at least two of these are stacked together Empty steel drums in the upper steel drum stacked on the inside serves as an outer support edge on the inner edge of the upward-opening filling opening of the second steel drum stacked below, characterized in that the steel drum (10) in the underbody (24) can be at least one liquid-tightly closed by means of a cover (bung plug) Has bunghole opening (26). 2. Steel barrel according to claim 1, characterized in that at least one closable bung opening (26) is arranged centrally in the underbody (24). 3. Steel barrel according to claim 1 or 2, characterized in that the barrel wall (28) above the bead (20) to the flanged edge (22) of the upper filling opening (12) cylindrical and the barrel wall (18) below the bead (20) to almost conical to the barrel bottom (24). 4. Steel barrel according to claim 1, 2 or 3, characterized in that the taper of the barrel wall (18) is between 5.5% and 11%, preferably about 7%. 5. Steel barrel according to claim 1, 2, 3 or 4, characterized in that the underbody (24) is slightly convex to the outside. 6. Steel barrel according to claim 1, 2, 3, 4 or 5, characterized in that the barrel body (18,28) of the steel barrel (10) is made of a cylindrical blank, which is by means of a stretching process or by expanding from a smaller diameter is expanded to the conically expanding barrel shape. 7. steel drum according to one of the preceding claims 1 to 6,
characterized in that a second, but inwardly directed bead (bead) (30) is formed in the lower region of the conical barrel wall (18). 8. steel drum according to one of the preceding claims 1 to 7,
characterized in that the barrel wall (18) in the vicinity of the outwardly directed connecting bead (32) between the underbody (24) and the barrel wall (18) is additionally tapered or reduced in diameter, the connecting bead (32) between the underbody (24) and barrel wall (18) lies within an imaginary extension of the conical barrel wall (18). 9. steel drum according to one of the preceding claims 1 to 8,
characterized in that the barrel cover (14) has at least one closable bung hole (34, 36), for example for sampling the barrel contents. 10. steel drum according to one of the preceding claims 1 to 8,
characterized in that the clamping ring (16) has a locking mechanism (38) which is arranged on the surface of the barrel cover (14) or which is on the inside.

Images