DE3535035A1 - Process and device for sorting out articles of the same kind, such as shrimps, from a group of articles, such as a haul of aquatic animals - Google Patents

Abstract

Process and device for sorting out non-flat, elongated articles of at least the same kind, such as shrimps, from a group of articles such as a haul of aquatic animals. The articles are aligned in the longitudinal direction and the sorted-out articles are transported in the longitudinal direction towards restraining openings, with predominantly equal masses in mutually opposite directions, and are led away on the other side of restraining openings.

Description

Method and device for selecting from a group of objects

sorting out similar objects like catching aquatic animals like shrimp.

The invention relates to a method for selecting from a group of objects like catching aquatic animals, sorting out at least the non-flat ones of the same kind; elongated objects such as shrimp.

Such a method is well known and is for example applied on board van shrimp cutters to get off with a train of a trawl to sort out the desired prawns from captured aquatic animals. Except prawns such a catch contains, for example, crabs and flatfish in different amounts Sizes. The aquatic animals; which are thicker than shrimp are initially put in one Remove the oversize sieve from the catch by leaving them on the oversize sieve and can be deducted from it. The ones that fell through the oversize sieve Aquatic animals are then sieved again with an undersize sieve; where the shrimp lying below measure and all remaining aquatic animals; the thinner than the undersize removed from the catch and put back into the water can be.

The now remaining catch contains mostly shrimp; can but nevertheless contain a considerable number of small flatfish and crabs. These then have to be removed by hand. This is what happens in the twine fishery normally; after the catch has been cooked in the saucepan. the by Shrimp that have become sterile can be re-sorted through this sorting process unwanted bacteria are contaminated. If the catch is still after seven Contains a considerable number of aquatic animals other than shrimp; demands that Re-sorting takes a lot of time. This means; that in certain fishing areas no more prawns can be caught; because the final catch after seven no matter how many unwanted objects it contains; that processing of such a catch is uneconomical.

The object of the invention is; to create a procedure; that for the mentioned disadvantages offers a remedy.

This task is masses in a erfindungsge described above Method solved by aligning the objects and in the longitudinal direction that in the longitudinal direction in the direction of passages; with in mutually perpendicular Directions predominantly equal masses; transporting the sorted out items and on the other side of the Passieröffnun conditions discharge the sorted out objects. This makes it possible; from the catch; made up of objects of one size group consists; sorting out the shrimp almost perfectly; without making this an undesirable one Loss of shrimp in part of the size group results. When the group of Objects containing a relatively large proportion of small objects; can according to the invention the method can be expanded; by before or after the Objects; whose thickness is less than the undersize; removed. That Subsequent sorting is therefore limited to individual items at the most. Even catchers the to a large extent consist of objects other than the desired shrimp; can be processed economically and cleanly with the method according to the invention will.

When the method according to the invention for processing shrimp is applied; will behave a particularly favorable execution; if according to the Invention the objects; whose thickness is less than the undersize it; afterwards removed will; by the sorted items in the conventional manner of a cooking treatment are subjected and then the cooked sorted items be aligned in the longitudinal direction and transported in the direction of the passages who and the removed objects on the other side of the passageways be discharged. When the prawns are cooked, they get one crooked shape; so that in this state they can no longer pass through the passage openings to be moved through. The small objects; originally sorted out with = was; probably disappear through the passage openings; so that she on the other Side can be discharged and only the desired ones in front of the passages Shrimp stay.

In practice it has been found; that when used for sorting out an optimal result is obtained from shrimp; if according to the invention the Passage openings are round.

The invention relates to and at the same time creates a device for sorting out at least one group of objects like a catch of water similar; non-flat elongated objects such as shrimp. According to the invention this device comprises a sieve device which has guide means with straightening elements for aligning the objects in their direction and transversely to the through the straightening elements determined longitudinal direction with passage openings in mutually perpendicular directions predominantly equal masses; Means of Movement for moving the objects and the passage openings towards one another in a relative sense; and laxatives in communication with the space under the passages.

Contains a favorable embodiment of the device according to the invention one; when the screening device has a sheet-like member; that with the means of alignment forming elongated grooves in the surface and that at the end of each Groove has a passage opening concentric therewith.

An embodiment particularly suitable for processing shrimp the invention is achieved; if the sheet metal Organ as one rotatable drum mounted on a frame is designed; being with the frame associated drive means tel can drive the drum in a direction of rotation; and the passages at the end of each groove in the direction of rotation are attached. When the drum rotates, the shrimp arrange themselves in the grooves and are taken along with the drum wall upwards; after which they by move the force of gravity in the groove and go through the pasier opening. Objects; which do not pass through the passages; but in it get stuck; are taken with the drum wall up and generally fall when moving the drum wall downwards by gravity back into the interior the drum. Too big objects; including aquatic animals but also aquatic plants; are removed from the inside of the drum at the end of the drum.

If, according to a further development, water supply means are brought on are; the jets of water directed downwards onto the one when rotating downwards moving outer surfaces part of the drum is provided with directing jet mouthpieces wind; is always guaranteed; that the passages are the most downwardly moving Outer surface part are open upwards; do not become clogged. Possibly Stuck objects are sprayed loose by the water jets.

In a favorable embodiment, the grooves are delimited by extending through to a level above the passage opening Move. Flatfish and other fish stay on their backs and do not prevent them the way to the passages. If, according to a further development, the grooves are arranged in a helical manner; become those that do not pass through the passages Objects out of its own accord to one end as a result of the rotation of the drum.

A very important added benefit of the method and apparatus according to the invention; that a product can be achieved with it; that bedevitend is less contaminated than the product; that on the conventional Way is obtained. After sieving, the remaining part of the catch is direct cooked in a saucepan on board the fishing boat. Still in the sifted catch Flatfish and the like that are in place are completely or completely destroyed by this cooking Partly apart. After the prawns are removed from the saucepan; are these mixed with residues of organic material; which spoil very quickly and influence the taste of the prawns. Because of this, the After boiling the catch rinsed with large amounts of seawater; around the mentioned rests to remove. In the known way of working, this means that after cooking sterile catch again contaminated with bacteria from the seawater. As with the invention a clean product is obtained; the catch no longer needs after cooking to be rinsed in with large amounts of water. The catch just needs to be cooled. This requires a much smaller amount of water. The required amount is located on such a scale that tap water from the Port can be taken on board the ship. When using the invention After cooking, the prawns only come into contact with near-aseptic Tap water instead of sea water that is heavily contaminated by bacteria. It is in an inexpensive way only a small amount of tap water to cool the cooked Prawns required; when this cooling water itself again through heat exchange is cooled with the sea water. This can e.g.

happen; by the container; in which the cooked prawns with the Cooling water can be cooled; is double-walled; being through the gap Sea water is pumped between the two walls.

Other features and advantages of the invention will be apparent from the following Description of some preferred embodiments.

Fig. 1 shows a partially broken away perspective view of a sieve a device according to the invention; to carry out the procedure according to Invention

FIG. 2 shows a detailed view of part of FIG. 1.

3 and 4 show perspective detailed views of other embodiments of the sieve according to the invention.

Fig. 5 shows a partially broken away perspective view of a sieve device according to the invention.

Fig. 6 is a perspective view from above; another embodiment of the sieve according to the invention.

Fig. 7 shows a perspective view of a screening device with a designed as a drum sieve according to the invention.

Fig. 8 shows a partially cut through and weggebroche ne perspective detailed view a sieve designed as a drum according to the invention.

Fig. 9 shows schematically a partial axial section of Fig. 8.

In Fig. 1, a sieve device according to the invention is shown GE. The device 1 consists of a frame 2; with the means of support arms 3 a screen frame 4 is articulated.

The sieve frame 4 is provided with a sieve 5 to be described in more detail Mistake. As shown, the device 1 is designed as a protection part sieve; whereby A rotating shaft 6 is mounted in the frame 2 for the drive of the Schüttelbewe movement is.

An eccentric 7 is mounted on the axis 6; which engages the support arm 3. Beam rotation of the axis 6 means that the support arm 3 is moved back and forth in the direction of arrow 8. The sieve 5 thus leads a back and forth movement at an angle to its surface. This movement entails in the familiar manner; that gradually transport objects brought to the front of the sieve 8 to the rear will; while these are constantly being moved.

The sieving device 1 is for use in sorting out shrimp determined from a catch; with one over and one under-sieve the sea animals with a thickness; which is greater than a certain excess, and the sea animals with it a thickness; which is less than a certain undersize; are away. The remaining one So catch contains 15 shrimp; which correspond to the measure; but also, for example, small ones Crabs 16 and flatfish 17 of the same thickness as the prawns 15. Around the prawns 15 now to be sorted out from this remaining catch; all items are made directed to the catch in a longitudinal direction and in this directed position the passages guided; which passages 11 in mutually perpendicular Directions have mostly the same dimensions. The prawns can be directed in this way Pass through the passages; because these prawns in cross-section are about the same width and thickness. Square fish and crabs 17 and 16 have in cross section seen a clearly greater width than thickness; and because through the previous ones Sieve processing these remaining crabs and flatfish one with the thickness of prawns 15 equal half thickness; its width is considerably greater than this thickness; so that they do not know how to go through the passages. Only the shrimp 15 can therefore pass through the sieve and the other objects such as crabs and flatfish are placed on the top at the back of the sieve discharged.

In the embodiment of the screen 5 shown in FIGS. 1 and 2 exist the directional means of elongated grooves 10, which from the wave depressions of their wave-like Profiling are formed. In these grooves 10, the objects 15-17 are a result the shaking movements of the screen 5 directed ge in its longitudinal direction. Through the Movements of the vibrating sieve also lift the Ge objects over the surface of the sieve 5 moved; so that the objects lying in the grooves 10 are in direction the passage openings 11 are transported. As shown in FIG. 2, these openings 11 prawns 15 well through; other items like crabs 16 and flatfish 17 not. the Passage openings 11 are formed at the point; where passage elements 12 adjoin the grooves 10. In the embodiment shown the passing elements are also made of a wellenför shaped profiling made of sheet metal manufactured sieve 5 determined. This profiling is opposite to that of the grooves 10 defining profiling shifted by half a wavelength attached. In the Embodiment of Fig. 2 is one between the two named profiles Transition profiling formed; in which the corrugation of the respective profiles continue. To place the connection of a wave trough 10 of one profile at one shaft tip of the other a cut is made in the sheet metal 5; the one Passing opening 11 is determined. As Fig. 2 clearly shows; are the passages 11 turned in two mutually opposite directions; so that the shaking motion of the sieve is optimally used. Although not shown in the figures; can the edges of the passageways are funnel-shaped; so the shrimp don't get caught behind these edges.

Although the desired profile shapes are simply pressed into sheet metal can be; to achieve a sieve device which satisfies the features of the invention; it is of course also possible; one such sieve device on another Way; e.g. made of wire material.

Fig. 3 shows another embodiment of a sheet metal screen according to the invention. This screen 20 is also made of corrugated per fileted sheet metal material. Two waveforms; indicated by 21 or 22; are alternately pressed into the sheet metal. The waveform 22 has a twice larger wave length and twice larger amplitude than waveform 21.

A wave trough of waveform 22 always coincides with a wave trough of the waveform 21, so that the intermediate wave troughs of the waveform 21 always Weigh in the extension of the wave peaks of waveform 22. To the place of transition the passage opening 23 is thereby formed; the one approaching in the discussed case have a radial form.

Here, too, the directional means are formed by the wave troughs 24.

The sieve of Fig. 4 is made of a corrugated sheet with a trapezoidal shape Wave profile manufactured. The wave troughs 26 again form the straightening elements. At In certain places there is always a part 27 of the corrugated iron; consisting of one part of the Wellbo dens including the two adjacent upright edges; removed. A plate 28 is attached over this part 27. The passages 29 are through the edges of the plate 28 forms ge.

In the device 30 shown in FIG. 5, both the oversize sieve; the undersize sieve and the sieve combined according to the invention. The device 30 consists of a frame 31; on a screen frame by means of movable supports 33 32 is mounted. This sieve frame 32 can be moved by means of the movement device 34 in a desired movement; e.g.

a shaking motion; be brought across from the frame 31. That The oversize sieve consists of the rod-shaped elements 38; those in one with excess are set up at the same distance between them. The catch is seen in FIG poured onto the SiEbVvorrichtung 37 on the left. The items from the catch; the bigger one are as the excess determined by the space between the rods 38; will be as a result the movement generated by the movement device 34 to the right over the dusts 38 transported to the discharge end 39; where these above measure objects be discharged. Things; that are smaller than excess; fall through the rods 38 through onto the undersize sieve 35; which consists of the screen elements 36. These rod-shaped elements 36 have a predominantly square cross-section; always two adjacent elements 36 with one longitudinal edge facing one another are. The distance between the flared edges agrees with that Undersize match. Things; which are thinner than this undersize; fall thus through the sieve elements 36 and are under the left part of the sieve device caught.

Due to the square cross-section of the rod-shaped sieve elements 36 are determined on both sides between the mutually facing edges Slot of the undersize sieve 35 mutually converging guide walls towards the slot de formed. These ensure; that objects like space fish on their side be placed; so that the flatfish; which are thinner than the undersize; quite Certainly be discharged through the Un termass sieve 35 and not on the slots can lie down. The danger of this could be; that the flatfish; the thinner are as the undersize; clog the openings of the additional sieve 42.

The action of the rods 38 and the screen elements 36 remain ben between these are left with the objects; which have a thickness; those in those of excess and fall from the undersized group.

By the movement generated by the movement device 34 SiebvorriChtung 37 move these objects; including all prawns 41; the correspond to the measure; seen to the right in FIG. 5; towards the additional Sieve 42 according to the invention. The additional Sieve 42, the shrimp 41 discharged at the bottom; as indicated at 43; while the other objects, such as the flatfish and crabs already mentioned; silver the additional sieve 42 can be discharged to the discharge end 39.

The sheet-like organ from Fig. 6 is with a Pressbearbei device profiled. The backs 55 are pressed into the plate; those at an angle to each other stand. The upstanding side walls 52 of the back 55 form the straightening elements; with which the elongated objects such as shrimp; directed in their longitudinal direction will. This is done by a relative movement of the plate 51 with respect to the objects lying thereon in the direction of arrow 54. The objects on the Sieves 54 relatively move in the opposite direction to arrow 54 and are from the wall walls 52 to the openings 53. If the shape of the cross section this Objects is smaller than that of the opening 53; fall this Objects through the openings 53.

In the device 58 of FIG. 7, the sheet-like organ is as one Drum 60 running. The drum 60 is rotatably mounted on a frame 59. On the front side, the drum has a flange 61; that of flange wheels 62 is supported. This includes the drum in the axial direction.

At the rear end of the drum 60 is provided with a cylindrical Lane 63; which cooperates with smooth wheels 64.

These wheels 64 are mounted in a support 65 of the frame 59. The The height of the support 65 is adjustable in relation to the tilting angle of the drum 60 the frame 59 to be able to adjust. A drive device engages one of the wheels 64 66, which can rotate the wheel 64 and thus the drum.

At the rear end of the drum on a higher level 60, a feed chute 67 is attached; which leads to the inside of the drum. the Drum 60 is designed like this; that the passage openings 70 are always on the one in the direction of rotation 68 rear end of each groove 69 are attached.

As the drum 60 rotates, the channel 67 moves into the Inside the drum introduced catch set in motion.

Thereby the prawns; directed in their longitudinal direction; in the Grooves 69 added and guided upwards over a certain distance. As a result gravity then push the shrimp in this groove 69 to the passage openings 70 and fall through there. The shrimp passing through the passage openings 70 fall onto the transport device 72; which is attached under the drum. This transport device 72 consists of a conveyor belt 75; which is guided around a roller 73. The role 73 is driven to rotate by a drive device 74; namely like this; that the upper part of the conveyor belt 75 -moved in the direction of arrow 76. The sorted out Shrimps are thus removed with the conveyor belt 75. The items from the Catch; not through the Pass through openings; walk slowly down in the drum 60 and finally come in the direction of the arrow 80 from the lower end thereof; where they fall into the waste bin 81. Instead of a container can also have a discharge device; e.g. in the form of a discharge channel to be appropriate.

An important aspect of the Siebvor device carried out in this way is; that the items; which possibly remain hooked in the passage openings 70 and to be guided upwards on the opposite side of the drum; the means on the part going down; come under the action of gravity and so detach themselves from the passage openings 70. To ensure that actually the objects stuck in the pass-through openings 70 are released therefrom Water supply device 84 mounted with a series of jet nozzles 85; the water jets directed downward in the direction of arrow 86 onto the at Rotation downwardly moving outer surface part 83 of drum 60 align. On the outside are the openings 70 in the wall part moving downwards 83 open at the top; so that the water jets with full force may be can splash loose objects that get stuck. The so by gravity; possible combined with the water jets detached objects come back inside the drum and finally leave it on the lower side. Next to .Ar drum 60, screens 82 are attached to the frame 59; the one shield against splashing away Form water. The screens 82 know one another by means of the transverse adjustments 87 suitable distance can be set.

8 and 9 show a preferred embodiment of one in the form of a drum 89 executed sheet metal organ according to the invention. ThisTreeel89 is through Injection molding made from synthetic material. This gives the surface the drum 89 does not have any sharp edges, so that unnecessary damage to the shrimp and other aquatic animals should be avoided. The production does not need all in one Operation to be done. The Tratiri89 can also be selected from a series in a suitable manner identical segments are built up.

The drum 89 has the already described grooves as a directional means or grooves 92; at their rear ends in the direction of rotation 94 into a Passage opening 90 open. The groove 92 are limited by up to one over the Passage openings 90 lying level reaching continuous ridge 91. The ridge 91 contribute on the one hand to straightening the shrimp or objects similar to them at; on the other hand, they take care of it; that larger objects; such as flatfish and crabs do not know about the openings 90; but on the back 91 to lie down.

As seen in relation to the end edge 96 of the drum; extend the grooves and ridges in winding lines around the circumference of the drum. Through this Objects lying on their backs such as flatfish are used for removal by themselves transported in the direction of arrow 95.

As Fig. 9 shows; the drum 89 is so executed; that is behind the passage openings 90 also extend different wall parts 93. These wall parts 93 take care of it; that passing objects are in keep moving the longitudinal direction; so that they don't get jammed by tipping over. In addition, this shape makes it easier to loosen objects; the partially caught in the opening 90. The water jets; the; if the concerned Wall part moved down; in the direction of arrow 97 on the back of the openings 90 are directed inwards; are swept well so that their effect is increased will.

Although the method and the device according to the invention by name are suitable; to remove shrimp from a catch of aquatic animals; can They can also be applied to alike from another group of objects Sort out items with a shrimp-like shape. The invention can therefore also used, for example, when sorting vegetables and the like will.

- blank page -

Claims (16)

PATENT CLAIMS 1. Method for selecting from a group of objects like catching aquatic animals, sorting out at least the non-flat ones of the same kind; elongated objects such as shrimp; G e k e n n n n z e i n e t by the in the longitudinal direction aligning the objects and that in the longitudinal direction in the direction of passage openings; with predominantly equal masses in mutually perpendicular directions; transport the sorted out objects and that on the other side of the passages discharge of the sorted out objects. 2. The method according to claim 1; characterized; that the items; whose thickness is smaller than the undersize; before or after removed. 3. The method according to claim 2 for shrimp processing; thereby g e no sign; that the objects whose thickness is less than the undersize is; be removed afterwards; putting the sorted items in the conventional Way to be subjected to a boiling treatment and then sorted the cooked Objects are aligned lengthways and in the direction of the passages are transported and the removed objects on the other side of the passages be discharged. 4. Device for making a group of objects such as a catch Aquatic animals sorting out at least similar ones; non-flat, elongated Objects such as shrimp; not shown by a sieve device the guide means has alignment elements for aligning in their longitudinal direction of the opposites and with itself across the through the straightening elements certain longitudinal direction extending passage openings with mutually perpendicular Directions predominantly equal masses; Means of movement to each other in a relative sense to move the objects and the passages; and with the space under the Passage openings in connection with laxatives. 5. Apparatus according to claim 4; thus g e k e n n n signs t; that the passages are round. 6. Apparatus according to claim 4; thus g e k e n n n signs t; that the screening device has a sheet-metal member; that with the means of alignment forming elongated grooves in the surface and that at the end of each Groove has a concentric passage opening. 7. Apparatus according to claim 6; thus g e k e n n n signs t; that the sheet-like organ as a rotatable drum mounted on a frame is executed; drive means connected to the frame converting the drum into a Can drive direction of rotation; and the passages on the one in the direction of rotation rear end of each groove are attached. 8. Apparatus according to claim 7; thus g e k e n n n signs t; that water supply means are attached; those with jets of water directed downwards on the outer surface part of the drum moving downwards in the Rotleren directing jet mouthpieces are provided. 9. Device according to one of claims 6-8; thus g e k e n n z It is important to note that the grooves are limited by themselves to one above the passage opening lying level extending continuous back. 10. Device according to one of claims 7-9; as a result drawing not; that the grooves are arranged according to helical lines. 11. Apparatus according to claim 6; thus g e k e n n -z e i c h n e t; that the sheet-like organ consists of at least some places with a wavy profile Shaft material is made; where the grooves are determined by the wave troughs and the passing elements with a relatively shifted wave-shaped profile corresponding wavelength; while the passages of incisions in the sheet material in place of the connections of a wave trough of one profile to the wave tip another profiling are formed. 12. The apparatus of claim 11; thus g e k e n n -z e i c h n e t; that the sheet material is stainless steel sheet and that the corrugated Profiles have been attached by pressing. 13. Apparatus according to claim 6; thus g e k e n n -z e i c h n e t; that the sheet-like organ is injection molded from synthetic material is made. 14. Device according to one of claims 4-13; as a result drawing not; that the edges of the passage openings are funnel-shaped. 15. Device according to one of claims 4-14; g e -k e n n z e i C h n e t through an undersize sieve with elongated slots with one with the undersize matching width; with the undersized screen on either side of each slot is provided with guide walls converging towards the slot. 16. The apparatus of claim 15; thus g e k e n n -z e i c h n e t; that the undersize sieve is a series of parallel rod-shaped elements predominantly has a square cross-section; where always two adjacent elements with one Long edges are facing each other and the oversize sieve is a row of parallel ones the difference between oversize and undersize of narrower rod-shaped elements; attached to it.