EP2090528B1 - Transport and storage container for fluids - Google Patents

Description

The invention relates to transport and storage containers for liquids, with a cuboid or cubic inner container made of plastic with a arranged on the upper bottom closable filler neck and arranged in the lower portion of the end wall in the region of the lower bottom of the inner container connecting piece for a removal fitting with a plastic housing, an insertable into the inner container flexible inner shell made of plastic with a filler neck and a discharge nozzle, an outer sheath of metal mesh or sheet and a pallet-like base for supporting the inner container.

The inner container of transport and storage containers of this genus, in the DE 202 17 856.0 U1 are described, is equipped for the transport and storage of liquids of various kinds in the chemical, pharmaceutical, petroleum and food industries with a replaceable flexible plastic inner sleeve.

From the EP-A-0 364 071 a container for receiving liquids is known, which has a flexible inner shell made of plastic and is provided on its underside with a removal fitting. For the sealing connection of the flexible inner shell to the removal fitting, a sealing flange made of plastic is provided, which is connected as a separate part to the removal fitting. To produce a sealing connection between the flexible inner shell and the sealing flange, the flexible inner shell is welded to a flange edge of the sealing flange.

The EP-A-1 598 288 shows a metal container, which is provided with a flexible inner shell having a connection flange for connection to a removal fitting, which is welded in the region of a flange with the flange.

The stringent legal environmental protection regulations require the transition from disposable containers such as pallet containers and drums for the transport and storage of liquids of various kinds to reusable containers, the conversion to larger volume containers with the aim of reducing the residual quantities and the development of new reusable containers with regard to a Relieving the environment from harmful substances reconditioned and their contaminated by the liquid transport and storage plastic components on a interchangeable flexible inner cover can be reduced from thin film material. The contaminated inner shell can be optimally disposed of by a low-emission or even pollutant-free destruction eg by combustion.

The invention has for its object to further develop the generic transport and storage container for liquids in view of a simple assembly of the removal fitting, in particular a flap or ball valve.

This object is achieved by a transport and storage container with the features of claim 1.

The subclaims contain advantageous and expedient developments of the invention.

The transport and storage container for liquids according to the invention is characterized by the following advantages:

The new container design allows easy connection of the removal fitting made as a plastic injection molded part to the emptying of the inner shell and the connecting piece of the inner container of the transport and storage container in the new production and reconditioning and a simple unscrewing the fitting for removal of the inner shell from the inner container during reconditioning of the transport container. With the easily replaceable inner cover after use, a clean inner container can be offered for the use of the transport and storage container as a reusable container. The integrally formed on the discharge neck of the inner shell sealing flange with a sealing lip makes a separate sealing ring, as he usually used to seal the Emptying socket of the inner container is used in the valve body, superfluous. By directly screwing the removal fitting with the inlet nozzle on the welded to the connecting piece of the inner container threaded sleeve eliminates the usual union nut for screwing the valve to the discharge neck of the inner container. The saving of the sealing ring and the union nut allows a reduction in the manufacturing cost of the new transport and storage container with inner cover for liquids.

Fig. 1

eine perspektivische Darstellung des Transport- und Lagerbehälters,

Fig. 2

eine Seitenansicht der an dem Anschlussstutzen des Innenbehälters angebrachten Entnahmearmatur,

Fig. 3

eine teilweise Draufsicht und einen Teillängsschnitt der an den Innenbehälter angeschlossenen Entnahmearmatur nach Linie III-III der Figur 2,

Fig. 4

einen Querschnitt nach Linie IV-IV der Figur 2 und

Fig. 5

eine vergrößerte perspektivische Darstellung des Entleerstutzens der Innenhülle des Transport- und Lagerbehälters.

The transport and storage container for liquids according to the invention is explained below with reference to drawing figures, which represent the following:

Fig. 1

a perspective view of the transport and storage container,

Fig. 2

a side view of the attached to the connecting piece of the inner container removal fitting,

Fig. 3

a partial plan view and a partial longitudinal section of the connected to the inner container removal fitting along line III-III of FIG. 2 .

Fig. 4

a cross section along line IV-IV of FIG. 2 and

Fig. 5

an enlarged perspective view of the discharge socket of the inner shell of the transport and storage container.

The usable as reusable and reusable container transport and storage container 1 for liquids FIG. 1 points as Main components a replaceable cuboid inner container 2 made of plastic with an end wall 3, a rear wall 4 and two side walls 5, 6, a lower designed as a drain bottom 7 and an upper floor 8, a molded on the upper floor 8, with a lid 10 closable filler neck 9 and an integrally formed on a concavity 11 in the lower portion of the end wall 3 connecting piece 12, which is integrally formed with the inner container 2 by blow molding, made for a plastic injection molded part removal fitting 13, in particular a flap valve, further from above through the filler neck. 9 in the inner container 2 used flexible inner shell 14 made of plastic, designed as a grid shell outer jacket 15 with intersecting horizontal and vertical bars 16, 17 made of metal for receiving the inner container 2 and a pallet-like base frame 18 with euronormgerechten length and width dimensions Support of the inner container 2.

To the connecting piece 12 of the inner container 2, a threaded sleeve 19 produced as a plastic injection molded part with an external thread 20 for screwing the provided with a corresponding internal thread 22 inlet nozzle 21 of the housing 23 of the removal fitting 13 is welded.

The inner shell 14 has a lower discharge opening 24, at the edge 25 of a flexible discharge nozzle 26 made of plastic with a flange 27 is welded. At the outlet end 28 of the discharge nozzle 26 of the inner shell 14, a flexible sealing flange 29 is formed, which is provided with an annular sealing lip 30.

The inner shell 14 is inserted through the filler neck 9 from above into the inner container 2 and to the bottom of the Inner shell 14 welded emptying pipe 26 is pulled through the connecting piece 12 of the inner container 2 and welded thereto threaded sleeve 19 to the outside and the sealing flange 29 of the emptying 26 of the inner shell 14 is brought to rest on the free end face 31 of the threaded sleeve 19.

When screwing the housing 23 of the removal fitting 13 with the inlet nozzle 21 to the welded to the connecting piece 12 of the inner container 2 threaded sleeve 19 of the sealing flange 29 of the discharge nozzle 26 of the inner shell 14 between the front end 31 of the threaded sleeve 19 and an inner shoulder 32 of the inlet nozzle 21 of the valve body 23 clamped to seal the discharge nozzle 26 of the inner shell 14 in the valve body 23. When clamping the sealing flange 29 of the emptying nozzle 26 of the inner shell 14, the sealing lip 30 of the sealing flange is pressed into an annular groove 33 in the inner shoulder 32 of the inlet nozzle 21 of the valve body 23.

The emptying 26 of the inner shell 14 is equipped with a rotation, which prevents twisting of the emptying nozzle 26 when screwing the fitting housing 23 with the inlet nozzle 21 to the welded to the connecting piece 12 of the inner container 2 threaded sleeve 19.

The rotation is formed by formed on the outer casing 34 of the discharge nozzle 26 of the inner shell 14 in the circumferential direction behind the sealing flange 29 nubs 35, the pulling through the discharge nozzle 26 of the inner shell 14 through the connecting piece 12 of the inner container 2 and welded to this threaded sleeve 19 with corresponding Grooves 36 engage, which are arranged in the inner casing 37 of the threaded sleeve 19 at the front end 38 in the circumferential direction.

The knobs 35 and the two longitudinal sides 39 of the associated Eingreifnuten 36 of the rotation are skewed against the screw-on direction of rotation of the valve body 23.

On the sealing flange 29 of the discharge nozzle 26 of the inner shell 14, a knob 40 is formed as an optical orientation aid for aligning the discharge nozzle 26 of the inner shell 14 for a predetermined installation position after pulling the discharge nozzle 26 through the connecting piece 12 of the inner container 2 and the welded thereto threaded sleeve 19th when inserting the inner shell 14 in the inner container. 2

reference numeral

1

Transport and storage containers

2

inner container

3

Front wall of 2

4

Back wall of 2

5

Sidewall of 2

6

Sidewall of 2

7

lower ground of 2

8th

upper floor of 2

9

Filler neck at 8

10

Lid of 9

11

Involution in 3

12

Connecting piece of 2

13

removal fitting

14

interior Skin

15

outer sheath

16

horizontal grid bar

17

vertical grid bar

18

undercarriage

19

threaded sleeve

20

External thread of 19

21

Inlet pipe of 23

22

Internal thread of 21

23

Housing of 13

24

Emptying opening of 14

25

Edge of 24

26

Discharge of 14

27

Flange to 26

28

Expiring of 26

29

Sealing flange on 28

30

Sealing lip on 29

31

Front end of 19

32

Inner shoulder of 21

33

Ring groove in 32

34

Outer jacket of 26

35

Nubs at 34

36

Groove in 37

37

Inner coat of 19

38

front end of 19

39

Long side of 36

40

Pimples on 29

Claims (8)

1. A transport and storage container for liquids, with a square-shaped or cubic inner container consisting of plastic, with a closable filling piece, which is arranged on the upper base, and with a connecting piece, which is arranged in the lower section of the end wall in the region of the lower base of the inner container, for a discharge fitting with a plastic housing, a flexible inner sleeve consisting of plastic, which can be placed in the inner container, with a filling piece and a drainage piece, an outer shell consisting of a metal grid or sheet metal, and a pallet-like frame for supporting the inner container, characterised by a threaded sleeve (19) consisting of plastic, which is fused to the connecting piece (12) of the inner container (2), with an external thread (20) for screwing the housing (23) of the discharge fitting (13) onto the inflow piece (21) of the housing (23), which is provided with a corresponding internal thread (22), wherein the flexible drainage piece (26), which can be pulled through the connecting piece (12) of the inner container (2) and through the threaded sleeve (19) which is fused to the connecting piece (12), of the inner sleeve (14), which is inserted from above through the filling piece (9) of the inner container (2) into the latter, has a sealing flange (29) at its outflow end (28), which sealing flange is clamped between the free end face (31) of the threaded sleeve (19) and an inner shoulder (32) of the inflow piece (21) of the fitting housing (23) when the inflow piece (21) of the fitting housing (23) is screwed onto the threaded sleeve (19) which is fused to the connecting piece (12) of the inner container (2), in order to seal off the drainage piece (26), which is pulled through the connecting piece (12) of the inner container (2) and the threaded sleeve (19) which is fused to the latter, of the inner sleeve (14) in the housing (23) of the discharge fitting (13).
2. The container according to Claim 1, characterised by an anti-rotation means of the drainage piece (26) of the inner sleeve (14) in the threaded sleeve (19) which is fused to the connecting piece (12) of the inner container (2).
3. The container according to Claim 2, characterised by knobs (35) which are integrally formed behind the sealing flange (29) in the circumferential direction on the outer shell (34) of the drainage piece (26) of the inner sleeve (14), which knobs engage with corresponding grooves (36) which are arranged in the circumferential direction in the inner shell (37) of the threaded sleeve (19) at the front end (38) of the latter when the drainage piece (26) of the inner sleeve (14) is pulled through the connecting piece (12) of the inner container (2) and the threaded sleeve (19) which is fused to the latter.
4. The container according to Claim 3, characterised by a cant of the knobs (35) and of the two longitudinal sides (39) of the grooves (36) counter to the screw-on direction of rotation of the fitting housing (23).
5. The container according to one of Claims 1 to 4, characterised in that the sealing flange (29) which is integrally formed on the drainage piece (26) of the inner sleeve (14) has an annular sealing lip (30), which is pressed into an annular groove (33) in the inner shoulder (32) of the inflow piece (21) when the fitting housing (23) is screwed onto the threaded sleeve (19) on the connecting piece (12) of the inner container (2), to seal off the drainage piece (26) of the inner sleeve (14) in the inflow piece (21) of the discharge fitting (13).
6. The container according to one of Claims 1 to 5, characterised by an optical orientation aid, which is attached to the sealing flange (29) of the drainage piece (26) of the inner sleeve (14), for aligning the drainage piece (26) of the inner sleeve (14) for a predefined installation position after the drainage piece (26) has been pulled through the connecting piece (12) of the inner container (2) and the threaded sleeve (19) which is fused to the latter after the inner sleeve (14) has been inserted into the inner container (2).
7. The container according to Claim 6, characterised by a knob (40) which is integrally formed on the sealing flange (29) of the drainage piece (26) of the inner sleeve (14) as the orientation aid.
8. The container according to one of Claims 1 to 7, characterised in that the threaded sleeve (19) which is fused to the connecting piece (12) of the inner container (2) is produced as a plastic injection-moulded part.

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