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Title:
DEVICE FOR DEPURATION OF CRUSTACEANS AND SHELLFISH
Document Type and Number:
WIPO Patent Application WO/2016/003264
Kind Code:
A1
Abstract:
The present invention relates to a depuration device configured to accommodate crustaceans and/or shellfish. The depuration device comprises an outer container (2; 23; 28) and optionally also a product holder (1; 22) in the outer container. The product holder is preferably separate and insertable into and removable from the outer container. The outer container comprises a bottom with a bottom plate (4; 26) and side walls. In addition, the depuration device according to the present invention comprises on one side an ascent channel (9; 24) and a descent channel (10; 25) connected to the ascent channel (9; 24), wherein the ascent channel (9; 24) is connected to a space (8) above a bottom plate (4; 26) and the descent channel (10; 25) is connected to a space (8) under the bottom plate (4), wherein the bottom plate (4; 26) is closed to the space below the bottom plate (4; 26) and is arranged at an incline in the outer container and is oriented at least partially, and preferably wholly downward toward a selectively closable and openable outflow opening (5) in at least one of the side walls and the bottom of the outer container (2; 23; 28).

Inventors:
SMIT, Willem Frederik Johan (Middelburgsestraat 61, ER Koudekerke, NL-4371, NL)
Application Number:
NL2015/050446
Publication Date:
January 07, 2016
Filing Date:
June 18, 2015
Export Citation:
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Assignee:
SYBE SMIT OCTROOI B.V. (Middelburgsestraat 61, Koudekerke, 4371 ER, NL)
International Classes:
A01K61/00; A01K63/02; A22C29/04
Domestic Patent References:
2004-03-18
Foreign References:
EP2567620A12013-03-13
ES2187326A12003-06-01
EP1120038A22001-08-01
US20140041596A12014-02-13
US4537149A1985-08-27
FR2382861A11978-10-06
Attorney, Agent or Firm:
GROOTSCHOLTEN, Johannes Antonius Maria (Bezuidenhoutseweg 57, AC Den Haag, NL-2594, NL)
Download PDF:
Claims:
CLAIMS

1. A depuration device configured to accommodate crustaceans and/or shellfish, comprising:

- an outer container (2; 23; 28; 41) comprising a bottom with a bottom plate (4; 26; 42) and side walls;

- an ascent channel (9; 24; 44); and

- a descent channel (10; 25; 45) connected to the ascent channel (9; 24; 44),

wherein the ascent channel (9; 24; 44) is connected to a space (8) above a bottom plate (4; 26; 42) and the descent channel (10; 25; 45) is connected to a space under the bottom plate (4; 26; 42),

CHARACTERIZED IN THAT

the bottom plate (4; 26; 42) is closed to the space below the bottom plate (4; 26; 42) and is arranged at an incline in the outer container and is oriented at least partially downward toward a selectively closable and openable outflow opening (5; 48) in at least one of the side walls and the bottom of the outer container (2; 23; 28; 41).

2. The depuration device as claimed in claim 1, wherein a product holder (1; 22) is insertable into and removable from the outer container.

3. The depuration device as claimed in claim 2, wherein the product holder (1; 22) is manufactured from at least one of the materials from the group comprising: a plastic; a metal; et cetera.

4. The depuration device as claimed in claim 2 or 3, wherein the product holder comprises at least one handgrip.

5. The depuration device as claimed in claim 2, 3 or 4, wherein at least a bottom of the product holder comprises passages.

6. The depuration device as claimed in at least one of the foregoing claims 2-5, wherein at least one of the outer container and the product holder comprises at least one centering protrusion.

7. The depuration device as claimed in at least one of the foregoing claims, wherein the descent channel (10; 25; 45) leads to an underlying outer container (2; 23; 28; 41) in a stack of outer containers (2; 23; 28; 41).

8. The depuration device as claimed in claim 7, wherein the bottom plate (4; 26; 42) defines a space in or under the bottom of the outer container into which the descent channel (10;

25; 45) debouches.

9. The depuration device as claimed in claim 7 or 8, wherein the bottom of the outer container (2; 23; 28; 41) comprises at least one throughfeed opening (11) from the space under the bottom plate (4; 26; 42) to the underlying outer container (2; 23; 28; 41).

10. The depuration device as claimed in at least one of the foregoing claims, wherein the outer container is manufactured from at least one of the materials from the group comprising: a plastic; a metal; et cetera.

11. The depuration device as claimed in at least one of the foregoing claims, wherein the outer container is stackable on or under an additional outer container.

12. The depuration device as claimed in at least one of the foregoing claims, further comprising a discharge channel (31; 32; 46) for connection to the selectively closable and openable outflow opening (5; 48) of an upper -lying or underlying outer container in a stack.

13. The depuration device as claimed in claim 12, wherein the discharge channel (31 ; 32; 46) is arranged outside the wall of the outer container.

14. The depuration device as claimed in claim 12, wherein the discharge channel (31 ; 32;

46) is arranged in the outer container.

15. The depuration device as claimed in claim 14, wherein the outflow opening (5; 48) is arranged in the bottom plate (4; 26; 42), with a throughfeed channel (51 ) to the discharge channel (31; 32; 46) and a closing valve (49) in or at the outflow opening (5; 48), which closing valve (49) can be operated from a side of the outer container.

16. The depuration device as claimed in claim 15, wherein the closing valve (49) comprises a controllable slide at the outflow opening (48) with a pull or push rod (50) extending laterally to the side of the outer container.

17. The depuration device as claimed in at least one of the foregoing claims 12-16, wherein the discharge channels (31 ; 32; 46) of outer containers (2; 23; 28; 41) lying one above another in a stack of outer containers (2; 23; 28; 41) are connectable to each other.

18. The depuration device as claimed in at least one of the foregoing claims, wherein the ascent channel (9; 24; 44) lies along a wall of the outer container (2; 23; 28; 41).

19. The depuration device as claimed in at least one of the foregoing claims, wherein the descent channel (10; 25; 45) lies along a wall of the outer container (2; 23; 28; 41).

Description:
DEVICE FOR DEPURATION OF CRUSTACEANS AND SHELLFISH

The present invention relates to a device for depuration of crustaceans and/or shellfish. This is understood to mean at least one of culturing, purifying and/or cleaning.

Depuration of living crustaceans and shellfish, or benthic organisms, is further understood to mean that these creatures are kept alive for a determined time (the retention time), wherein a (sea)water flow is sustained and maintained through the product mass. This (sea)water flow provides for the supply of necessary nutrients and the discharge of waste products such as sand, as well as ammonia, faeces, pseudofaeces and other secretions produced by the benthic organisms. In the case of marine crustaceans and/or shellfish a salt water flow is utilized; and in the case of freshwater animals a freshwater flow can conversely be applied.

Depuration of the product is applied, among other purposes, for: temporary wet storage which can be designated "wet storage" because the benthic organisms are located in water such as seawater; stock accumulation; removal of sand from the benthic organisms; as pretreatment for a follow-on process; for removal of toxins (purification); for the culture of half-grown crustaceans and shellfish following respectively the post-larval and pediveliger stage, which can be designated as "culture", and so on.

Depuration can be differentiated into natural depuration and artificial depuration. In natural depuration the vulnerable crustaceans and shellfish are placed with a small layer thickness on natural sandbanks or mudbanks (seabed), wherein ebb and flow provide for the necessary flow thereover and therethrough. These natural flows thereover and therethrough occur with very large quantities of (sea)water.

In artificial depuration the necessary (sea)water is supplied and discharged by means of pumps.

Depuration can further be subdivided into vertical depuration and horizontal depuration.

Horizontal depuration of living crustaceans and shellfish has been applied for a very long time.

Vertical depuration has only been employed since the end of the 20 th century. In the first instance this was carried out by means of metal trays of large size with volumes varying from 1 to 15 tonnes with a single vertical thioughfiow.

It has been found in practice that vertical downward product thioughfiow produces better results than horizontal product throughflow.

In yet another development, which has come into use since the end of the 20 th and the beginning of the 21 st century, it is known to apply plastic depuration trays. These plastic depuration trays can be stacked in multiples. The advantage of tray stacking is that the supplied (sea)water can be used several times. This results in a saving in respect of pump energy and (sea)water used.

The known techniques have a number of shared drawbacks. All systems designed and/or used heretofore are specifically designed for either living shellfish or living crustaceans and the retention time in the depuration units, which depend on, among other factors, the temperature of the supplied (sea)water, can never be longer than about 14 days. The maximum retention time is determined by the bacterial growth on the bottom of the depuration units. Even at low

temperatures, for instance 1°C, when the metabolism of the product is low, oxygen is used and waste products produced (ammonia and excrements such as faeces and pseudofaeces). The accumulation of the solid waste products on the bottom are the cause of bacterial growth which have a harmful effect on the product.

Because of their size the known depuration units are unsuitable for direct supply of product to the retail trade, which reduces product freshness and causes difficulties in respect of product traceability. This drawback is mainly attributable to the size of the known depuration devices. It is hereby usual to preferably keep the crustaceans and/or shellfish at the lowest possible positive temperatures in the known depuration devices, for instance up until the shortest possible moment before for instance consumption or other type of processing. When the desired retention time has been reached, the crustaceans and/or shellfish are taken out of the depuration devices and packaged for instance in manageable portions or quantities.

Owing to the resulting number of operations to be performed (portioning, weighing, small packaging, large packaging) product damage is relatively high.

Reference is made here as closest prior art to FR-84.16.397 and/or NL-2.006.360 and/or EP-1120038 and/or EP-2567620, all with a horizontal bottom plate with at least one water passage therein for passage of water from an upper-lying container directly through the bottom to an underlying container, relative to which at least the features in the characterizing part of the independent claim of the appended claims are new.

The disclosure in EP-2567620 relates to a configuration which is usable only for purification or wet storage for a short period, as will be apparent from the designation

"depuration".

According to the present invention problems associated with residues such as ammonia, and secretions such as faeces and pseudofaeces are tackled so that culture is made possible for a longer period of time, although the depuration device can also be utilized for use for shorter periods. According to the invention the depuration device has for this purpose the features that the bottom plate is closed to the space below the bottom plate and is arranged at an incline in the outer container and is oriented at least partially, and preferably wholly downward toward a selectively closable and openable outflow opening in at least one of the side walls and the bottom of the outer container. Water from an upper-lying depuration device can thus enter an underlying depuration device only via the ascent channel and the descent channel connecting thereto, and passage of residues and cross-contamination resulting therefrom is surprisingly prevented very effectively with the configuration of only the ascent and descent channels for throughfeed of (sea)water, this in contrast to the situation in the case of or with a prior art depuration device where a bottom plate with at least one passage to the space thereunder is applied.

A product holder is preferably insertable into or removable from the outer container. For purposes of transport only the product holder can be transported.

In an additional or alternative embodiment of the device according to the first aspect, the depuration device according to the invention can have the feature that the descent channel leads to an underlying outer container in a stack of outer containers.

In an additional or alternative embodiment of the invention according to the first aspect with an ascent and a descent channel, the depuration device according to the invention can have the features that the bottom plate defines a space in or under the bottom of the outer container into which the descent channel debouches.

Tn an additional or alternative embodiment of the invention the depuration device can have the feature that the bottom of the outer container comprises at least one throughfeed opening from the space under the bottom plate to the underlying outer container.

In an additional or alternative embodiment of the invention the depuration device can have the feature that the product holder is manufactured from at least one of the materials from the group comprising: a plastic; a metal; et cetera.

In an additional or alternative embodiment of the invention the depuration device can have the feature that the product holder comprises at least one handgrip.

In an additional or alternative embodiment of the invention the depuration device can have the feature that at least a bottom of the product holder comprises passages.

In an additional or alternative embodiment of the invention the depuration device can have the feature that at least one of the outer container and the product holder comprises at least one centering protrusion.

In an additional or alternative embodiment of the invention the depuration device can have the feature that the outer container is manufactured from at least one of the materials from the group comprising: a plastic; a metal; et cetera.

In an additional or alternative embodiment of the invention the depuration device can have the feature that the outer container is stackable on or under an additional outer container.

In an additional or alternative embodiment of the invention the depuration device can have the feature of a discharge channel for connection to the selectively closable and openable outflow opening of an upper -lying or underlying outer container in a stack. In such an embodiment it can be the case that the discharge channel is arranged outside the wall of the outer container, wherein an internal configuration of the discharge channel also lies within the scope of the present invention. In a possible embodiment of the depuration device according to the invention the outflow opening can be aiianged in the bottom plate, with a throughfeed channel to the discharge channel and a closing valve in or at the outflow opening, which closing valve can be operated from a side of the outer container.

The closing valve can comprise a controllable slide at the outflow opening with a pull or push rod extending laterally to the side of the outer container.

The discharge channels of outer containers lying one above another in a stack of outer containers can be connectable to each other.

The ascent channel preferably lies along a wall of the outer container.

The descent channel preferably lies along a wall of the outer container.

After the foregoing substantially generic statement of aspects and features of depuration devices according to the present invention, a number of embodiments will be described in more detail hereinbelow with reference to the accompanying drawing in which the same or similar components, elements and features can be designated with the same reference numerals, and which are only illustrative embodiments which have no repercussions for the scope of protection of the present invention as defined in the appended claims. In the drawing:

Figure 1 is a schematic cross-sectional side view of an assembled depuration device according to the present invention in a first embodiment;

Figure 2 is a perspective view of a product holder as can be applied in for instance the assembly of the depuration device in figure 1 ;

Figure 3 is a schematic cross-sectional side view of an assembled depuration device according to the present invention in an additional and/or alternative embodiment;

Figure 4 is a schematic cross-sectional side view of only an outer container of a depuration device according to the present invention in an additional and/or alternative embodiment;

Figure 5 shows an assembly of outer containers stacked onto each other in an embodiment additionally having an discharge channel outside the outer wall;

Figure 6 shows a configuration similar to figure 5, but with a tubular discharge channel; and

Figure 7 shows a cross-sectional view of a further developed embodiment of an outer container of or for a depuration device according to the present invention.

A device in a first embodiment according to the present invention comprises in figure 1 an assembly of a removable plastic product holder 1 with handgrips 13 and a perforated bottom 14 and an outer container 2 fitting therearound.

Outer container 2 is provided with handgrips 15 and centering protrusions 3 for centering product holder 1. Centering protrusions 3 can be arranged on product holder 1 instead of on outer container 2. When product holder 1 is in outer container 2 and when (sea)water is supplied as according to arrow A, a laminar, vertically downward directed (sea)water flow is maintained in the direction of arrows B through the benthic organisms (crustaceans and/or shellfish) in product holder 1.

This (sea)water flow is brought about by forming a uniform pressure-regulating layer of

(sea) water 16 above product 6 in product holder 1 where the pressure is higher than in the uniform pressure-regulating layer of (sea)water 7 under the perforated bottom 14 of product holder 1. This pressure difference in combination with a predetermined amount of (sea)water to be supplied between a maximum and a minimum creates a substantially laminar flow in the direction of arrows B through product mass 6, whereby the (sea)water flows around each individual crustacean and/or shellfish.

Outer container 2 also comprises a closed bottom 4 sloping downward to a relatively large outflow opening 5 which comprises an associated quick-action closure. The quick-action closure comprises a valve 17 on an operating arm or handle 18 rotatable about a tilting point 19, which valve is held closed by a resilient body 12 acting on operating handle 18. This relatively large outflow opening 5 is opened at predetermined points in time, whereby sediment lying on the sloping bottom is flushed out and harmful bacterial growth is avoided. This opening of valve 17 can take place manually or by means of a control, remotely if desired, for instance with a hydraulic or pneumatic cylinder or an (electric) motor or any other random form of a drive.

Valve 17 can have any fitting or suitable form, for instance a slide valve and/or knife -gate valve, a ball valve, a butterfly valve, a rotatable drain tube and so on.

In the case of "wet storage" the temperature of the supplied (sea)water is low such that during the retention time the product is brought into and held in a state of near-hibernation, whereby the metabolism of crustaceans and/or shellfish is greatly reduced. This results in a low oxygen consumption and reduced excretion of ammonia, faeces and pseudofaeces.

During "culture" the conditions of the supplied (sea)water are preset for an optimum growth of the product, this often being realized at temperatures which are at least to some extent higher than in the case of retention until shortly before consumption of (substantially) fully grown crustaceans and/or shellfish 6, which usually takes place at the lowest possible positive temperatures. It is noted in this context that culture in the assemblies according to the invention is made possible where this was precluded with known prior art depuration devices. As addition to higher temperatures for culture than for storage of (substantially) fully grown crustaceans and/or shellfish it is possible within the scope of the present invention to envisage providing nutrients for the crustaceans and/or shellfish for culture in the flow of (sea)water, such as plankton, and other properties of the (sea)water can be set to a favourable value, such as the pH value, the oxygen content and so on. For such a new application it is further possible to envisage the use of a fine- mesh grating or filter as perforated or grating-like bottom 14 of product holder 1 in order to prevent young, small cmstaceans and/or shellfish thereon or at least in product holder 1 from being flushed away.

After passing through the crustaceans and/or shellfish 6 all the (sea)water flows out of space 8 via ascent channel 9 in the direction of arrows D, through descent channel 10 in the direction of arrows E and through at least one passage opening 11 in the direction of arrow C to an assembly of product holder 1 and outer container 2 placed thereunder.

Since water from an upper-lying depuration device can enter an underlying depuration device only via ascent channel 9 and descent channel 10 because plate 4 is closed, in contrast to the prior art, flow through ascent channel 9 counter to the direction of the laminar flow of arrows B achieves that at least approximately all the sediment, ammonia, faeces, pseudofaeces and so on is deposited onto the inclining and closed bottom 4 and is not entrained to an under-lying assembly of outer container 2 and product holder 1. Tt should be noted here that a part of particularly the ammonia can be entrained with a flow out of outflow opening 5, and can for instance be treated and/or decomposed outside the assemblies or stacks thereof. Cross-contamination from diseases and bacteria from an upper-lying assembly to all underlying assemblies in a stack can effectively be prevented by holding sediments in an assembly.

Product holder 1 is shown in more detail in Figure 2. The product holder comprises closed walls 20 and the perforated bottom 14. Because walls 20 are closed, at least ascent channel 9 can be defined simply by placing the product holder in outer container 2 as shown in the assembled state in Figure 1.

As alternative, for instance when an alternative embodiment of product holder 1 is designed in the form of a net basket (not shown), a separating wall (not shown) in the outer container can be utilized to define ascent channel 9 between an inner wall 21 which is connected to the inclining bottom 4 (and already serves to form descent channel 10 with an outer wall of the outer container) and this separating wall. Ascent channel 9 can be embodied as yet another alternative in the form of a tube or pipe 24 along or on the separating wall (or elsewhere) and connected to space 8 in Figure 3. In similar manner descent channel 10 can be embodied in the form of a pipe or tube 25 on or along the outer side of outer container 23 in Figure 3.

The alternative embodiment according to Figure 3 otherwise has a curved but also closed bottom 26 instead of the inclining but straight bottom 4 in Figure 1 , and product holder 22 can be a basket. During placing of product holder 22 in outer container 23 in the direction of arrows F the handgrips 13 on product holder 22 can come to rest on handgrips 15 of outer container 23.

In yet another embodiment an outer container (not shown) comprises a side wall formed by means of a hatch through which it is possible to allow escape of (sea)water in the outer container but also to place/take a whole product holder into and/or out of the outer container. Passage openings 11 are then preferably closable. A stack of outer containers need not therefore be taken apart to provide access to a single product holder in an outer container somewhere in a stack of outer containers.

Figure 4 shows yet another embodiment of the present invention. Shown therein is an outer container 28 without product holder (which must however be placed in outer container 28 in an assembled position of use), with a filter plate 27 in outer container 28, whereby ascent channel 9; 24 and descent channel 10; 25 are omitted. (Sea)water flows through the inclining filter plate 27 to passage openings 11 while residues remain behind on filter plate 27. In respect of the operation of a filter plate it should be noted that this is similar to the prior art according to EP-1120038 and/or EP-2567620 with a bottom plate with at least one passage, which does not suffice in respect of preventing cross-contamination from an upper-lying to an underlying outer container. Residues can be removed from filter plate 27 in order to extend the retention time by operating valve 17 of outflow opening 5 at set times or as required, using a motor 30 in the case of the embodiment in Figure 4.

Product holders 1 can be closable with a bottom element and optionally a cover. After removal of a product holder 1 from an outer container the product holder can in this way be closed for transport to a customer for the purpose of preserving the freshness of the crustaceans and/or shellfish therein.

Figure 5 shows an assembly 33 of outer containers 34 stacked onto each other. Each outer container 34 in stack 33 has a discharge channel 31 outside an outer wall with an upward oriented inlet 35 on the upper side of the associated outer container 34 for collecting water with waste flowing out of an outflow opening 5 of an upper-lying outer container 34 in opened position. The outflow opening can by way of example be opened in the direction of arrow G.

Discharge channel 31 converges in downward direction to a narrower width at the underside of the associated outer container 34 and debouches at an outlet 36. Inlet 35 is also sufficiently large and/or wide to collect water and waste from outflow opening 5 and from outlet 36 of one or more than one upper-lying outer container 34.

Figure 6 shows a similar though other configuration with a stack 37 of outer containers 38 which are provided on the outer side with a tubular discharge channel 32. Discharge channels 32 have on the upper side of the associated outer containers 38 a widened portion 39 for passage of water and waste coming from a discharge channel 32 of an upper-lying outer container 38.

Discharge channels 32 further have a lateral branch 40 for collecting water and waste coming from an outflow opening 5 of the associated outer container 38.

Channels 31 , 32 are not higher, longer or lower than the dimensions of the associated outer container 34, 38. Parts protruding relative to outer containers 34, 38 are thus avoided. The discharge channels can by way of alternative (not shown) also be arranged internally in the outer containers.

Using the present invention all the stated drawbacks of systems according to the known art are generally obviated or at least considerably reduced, and the following features are or at least can be achieved:

In determined embodiments the units are small (but can be large) and are particularly, though not exclusively, suitable in a small variant for: retail trade size, good product traceability, easy handling. With the invention an ideal vertical, laminar, downward oriented and controllable product throughput can be realized, wherein each individual product is provided with sufficient supply and discharge of (sea)water. An efficient water management can be realized while the invention is highly suitable for crustaceans and/or shellfish. By means of the large drain valve with obliquely placed bottom it is possible to adequately remove deposited accumulations of excrement, ammonia, faeces, pseudofaeces and the like at set times and optionally automatically and to considerably increase the retention time. As a result of the inclination of bottom plate 4; 26 such substances for removal will already accumulate ready for discharge in the vicinity of outflow opening 5 with drain valve 17. Because the bottom plate is closed, cross-contamination is effectively controlled.

Because the product holder is removable, it can be filled directly with product by a supplier/fisherman/breeder, whereby product damage and product mortality can be reduced, and the same broadly applies for marketing to (end) customers/buyers/restaurants and the like. The invention is suitable for application in an automated system.

The embodiment according to figure 7 comprises an outer container 41 with a bottom 42 in, on or at which are formed bosses 43 on which a protective plate, grating or similar element (not shown) can be laid in order to avoid the need for a product holder or inner container. The wall of outer container 41 comprises integrated ascent channels 44 and descent channels 45. A discharge channel 46 is further integrated into a wall of outer container 41.

A downward sloping section 47 of bottom 42 runs to an outflow opening 48 which is closable with a slide valve 49. Outflow opening 48 is preferably relatively large and slide valve 49 is a preferred embodiment of a control which is quick and easy to operate for selective opening and/or closing of the outflow opening. This is related to convenience of use but also, or more so, to outflow speeds, which must preferably be high when slide valve 49 is opened in order to allow runoff of as much as possible of the ammonia, faeces, pseudofaeces and other secretions produced by the benthic organisms. Other parts of the bottom can also have an incline and drain to outflow opening 48. Slide valve 49 can be operated with a pull or push rod 50 with which the slide valve can be selectively set into operation in order to selectively leave clear a throughfeed channel 51 between outflow opening 48 and discharge channel 46. It is emphasized here that this embodiment has a closed bottom plate 42 in the sense that water cannot pass from the bottom plate from the space thereabove to an underlying container in a stack without flowing through the ascent and descent channels 44, 45. Cross-contamination between containers lying above and/or below each other in such a stack can thus be effectively controlled because ammonia, faeces, pseudofaeces and other secretions produced by the benthic organisms are discharged separately via outflow opening 48 with slide valve 49, throughfeed channel 51 and discharge channel 46 without the danger of their being able to enter an underlying container in a stack of containers.

Although the present invention is described in the foregoing and is shown in the accompanying drawing of different embodiments as comprising an insertable and removable product holder, it should be noted that the product holder can be formed integrally with the outer container or can be omitted as in figure 7. Other variants also fall within the protection of the following claims. It is thus possible for the ascent and descent channels, perforated intermediate bottom (product carrier bottom), bottom plate at an incline and discharge opening for wastes etc. to form one whole. The outer container can have been or is provided with recesses and/or other accommodations in or at the bottom for transport by means of for instance a forklift truck, lifting device and the like. Outflow opening 5 can also be located on the underside in or at the bottom of the outer container as in the embodiment of figure 7 instead of in a side wall according to the other embodiments. Discharge channel 31, 32 can be integrated into (the interior of) at least one of the outer container and the product holder and need not be arranged on the outer side of the outer container, but can additionally or alternatively be positioned and received in the interior of the outer container as in the embodiment of figure 7.