CA1109615A - Process and device for gutting fish - Google Patents
Process and device for gutting fishInfo
- Publication number
- CA1109615A CA1109615A CA332,048A CA332048A CA1109615A CA 1109615 A CA1109615 A CA 1109615A CA 332048 A CA332048 A CA 332048A CA 1109615 A CA1109615 A CA 1109615A
- Authority
- CA
- Canada
- Prior art keywords
- fish
- shaped
- belly
- intestines
- cutout portion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Abstract
ABSTRACT OF THE DISCLOSURE
A process and a device for gutting fish with voluminous belly contents such as fish before spawning or tunny-species, is described. Non-decapitated fish lying on their backs and with their tail ends leading, are conveyed successively along a trough-shaped path in the direction of their longitudinal axes. While the fish are advancing, their belly cavities are cut open by a slitting knife. Thereafter, the intestines are loosened and removed upon fluid-floating by suction pumping after comminution and severing of parts of the intestines. To this end there is provided a water supply and cleaning tool in the form of a suction pump including a star-shaped rotating ejector.
A process and a device for gutting fish with voluminous belly contents such as fish before spawning or tunny-species, is described. Non-decapitated fish lying on their backs and with their tail ends leading, are conveyed successively along a trough-shaped path in the direction of their longitudinal axes. While the fish are advancing, their belly cavities are cut open by a slitting knife. Thereafter, the intestines are loosened and removed upon fluid-floating by suction pumping after comminution and severing of parts of the intestines. To this end there is provided a water supply and cleaning tool in the form of a suction pump including a star-shaped rotating ejector.
Description
1 lLgl~615 The present invention relates to a process and to a device for gutting fish. -From GermanOffenlegungsschrift 2 232 633 there is ~ ~
already known an automatlcally functioning device for e~tract- ;r ing the intestines and the hearts of fish, wherein none-decapit-ated fish lying in a longitudinal trough with their backs facing downwards are conveyed by a tail clamp each in the ~ -direction of their longitudinal axes and provides with a ;~
longitutinal cut each from the anus to the gullet by means `
~ . :
of a slitting knife arranged above the longitudinal trough, the intestines and the hearts are separated from the belly wall by means of a brush, the intestines are removed by means of a cleaning tool comprising a U-shaped sheathing and a star-shaped~ rotating ejector, and the belly cavities are ` cleaned by means of a cleaning brush.
.~ :, ~ This known device is intented for cod or cod-like ; ~ fish weighing between one or four kilograms and able to cut -~. :
-such fish when they are in a normal state. However, this ~ ~
, device will not work properly in the case of fish having fully developed ovaries or other fish, because the brush cannot penetrate the voluminous belly contents or separate the intestines from the belly cavity.
It is one of the main objects of the invention to enable a gutting of fish the belly contents of which have a large volume such as in the case of fish before spawning, or of fishes such as tunny or its relatives.
Accordingly, the invention as herein claimed is a process for gutting fish, essentially comprising the steps of conveying successively the non-decapitated fish lying on ~-their backs and with their tail ends leading, opening the belly cavities by severing the belly walls while the fish are being advanced, and loosening and removing the intestines ':
1 - ~
6~5 , durin~ the further transport of the fish, wherein after the opening of the belly cavities the intestines are floated by ` : means of a fluid and removed by suction pumping on partially comminution and severing of the gullet, of the gut, and, if necessary, of the ligaments holding the intestines.
. The advantages achieved by the invention particularly :, lie in the fact that the intestines may be separated safely from the wall of the beily cavity and removed without damaging or straining the belly cavity.
1 ~ 10 In ordex to perform the above process in an i advantageous manner the invention also provides for a device comprising a trough-shaped path or track for receiving the '. fish in a back-downward position, a conveyor for moving the : . fish in the direction of their longitudinal axes, a slitting knife above the trough-shaped path and arranged to be lowered, and a cleaning tool also arranged to be ~
, .. . ~ . . . . . . . . . . .
. . ~. .. .. .. . .......... ...
.... .. ... . ....... . .. ..... -... ,... . . ~ .
- . ~ .. ~, .. ' ll~S~
lowered, comprising a U-shaped sheathing and being provided ' with a star-shaped rotating ejector, a water supply being provided downstream of the slitting knife when seen in the conveying direction of said conveying direction of said conveyor, and the cleaning tool being in the form of a suction pump.
- Such a sequence of tools is particularly favourable with 'r . respect to its construction and enables the performance of the , process according to the invention in a very simple and economical ,.
manner.
For the purpose of achieving a particularly simple overall construction and a favourable work flow the suction pump and/or the water supply may be connected to means for controlling their lowering in synchronism with the advancing of the fish, in particular with the conveying elements for the fish.
Preferably the water supply may comprise one or several slot nozzles. Thus the fluid can be forced precisely between the belly cavity walls and the intestines under pressure so as to enforce the loosening resp. separation even of firmly adhering intestines.
In order to be able to suck in the intestines tangentially when they have only been chopped to a relatively small degree, the suction pump may be arranged as a disc-shaped impeller pump comprising an impeller and a housing provided with at least one cutout portion along its circumference. In this connection it ls possible to achieve an adaptation to the -~
. ~ . , .
3 t , , ,, - , - ` ~ ,; :
S~5 belly cavities of varying fishes by a segment or sector shaping of the cutout portion.
According to another embodiment the cutout portion may be bordered at the entrance position of the impeller into the-housing by a bow-shaped severing tool provided with a cutting edge. This enables a simple and safe severing of the ligaments etc. of parts of the intestines already seized by ~ ~-suction.
, According to yet another embodiment of the invention the housing may be provided in the region of the cutout portion with a guide bracing against the belly sides of the vertebrae.
This helps to avoid that the suction pump immerges resp.
penetrates into the belly cavity too deeply and in an uncontrolled manner ::, . .
An embodiment of the present invention will now be more partlcularly described by way of example with reference to the accompanying schematic drawing. In this Fig. 1 shows an axonometric sectional ~iew of a , .
device suited for performing the invention ;
and Fig, 2 shows a side elevation of the suction pump.
In a frame (not shown) there are arranged reversing or deflection elements and a drive (also not shown) for an endless conveyor 2, the upper run of which is shown in Fig. 1. The conveyor 2 is provided with V-shaped longitudinal troughs 21, carries upwardly extending fork-shaped con~eying elements at a fixed distance between the longitudinal troughs ; 21, and runs in a conveying direction 23. Above the path or track of the conveyor 2 there are arranged consecutively - when seen in the conveying direction 23 - a slitting knife 3 driven to rotate, a water supply 4, and a suction pump 5.
The slltting knife 3 is arranged to yield in height in a `~
: , ~.
r ~ 4 ~ ~ ~
~.
6~
know~ manner and connected or provided with a non-illustrated known control device or arrangement. The water supply is formed as a slot nozzle or jet 43 charged by pressurized water and carried by a plvoted arm 42 mounted to swivel about a swivelling axis 41 fixed to the frame. The suction pump 5 is arranged as a disc-shaped impeller pump and comprises a ,~ .
housing 51, which is arranged to swivel about a swivel axis 58 aIso fixed to the frame. In the housing there is mounted a rotor shaft 59 driven to rotate in an appropriate manner, ` 10 this shaft carrying an impeller 60. The housing 51 has a U-shaped cross section, is provided with a tangential or lateral exit 57, at its peripheral part facing the conveyor
already known an automatlcally functioning device for e~tract- ;r ing the intestines and the hearts of fish, wherein none-decapit-ated fish lying in a longitudinal trough with their backs facing downwards are conveyed by a tail clamp each in the ~ -direction of their longitudinal axes and provides with a ;~
longitutinal cut each from the anus to the gullet by means `
~ . :
of a slitting knife arranged above the longitudinal trough, the intestines and the hearts are separated from the belly wall by means of a brush, the intestines are removed by means of a cleaning tool comprising a U-shaped sheathing and a star-shaped~ rotating ejector, and the belly cavities are ` cleaned by means of a cleaning brush.
.~ :, ~ This known device is intented for cod or cod-like ; ~ fish weighing between one or four kilograms and able to cut -~. :
-such fish when they are in a normal state. However, this ~ ~
, device will not work properly in the case of fish having fully developed ovaries or other fish, because the brush cannot penetrate the voluminous belly contents or separate the intestines from the belly cavity.
It is one of the main objects of the invention to enable a gutting of fish the belly contents of which have a large volume such as in the case of fish before spawning, or of fishes such as tunny or its relatives.
Accordingly, the invention as herein claimed is a process for gutting fish, essentially comprising the steps of conveying successively the non-decapitated fish lying on ~-their backs and with their tail ends leading, opening the belly cavities by severing the belly walls while the fish are being advanced, and loosening and removing the intestines ':
1 - ~
6~5 , durin~ the further transport of the fish, wherein after the opening of the belly cavities the intestines are floated by ` : means of a fluid and removed by suction pumping on partially comminution and severing of the gullet, of the gut, and, if necessary, of the ligaments holding the intestines.
. The advantages achieved by the invention particularly :, lie in the fact that the intestines may be separated safely from the wall of the beily cavity and removed without damaging or straining the belly cavity.
1 ~ 10 In ordex to perform the above process in an i advantageous manner the invention also provides for a device comprising a trough-shaped path or track for receiving the '. fish in a back-downward position, a conveyor for moving the : . fish in the direction of their longitudinal axes, a slitting knife above the trough-shaped path and arranged to be lowered, and a cleaning tool also arranged to be ~
, .. . ~ . . . . . . . . . . .
. . ~. .. .. .. . .......... ...
.... .. ... . ....... . .. ..... -... ,... . . ~ .
- . ~ .. ~, .. ' ll~S~
lowered, comprising a U-shaped sheathing and being provided ' with a star-shaped rotating ejector, a water supply being provided downstream of the slitting knife when seen in the conveying direction of said conveying direction of said conveyor, and the cleaning tool being in the form of a suction pump.
- Such a sequence of tools is particularly favourable with 'r . respect to its construction and enables the performance of the , process according to the invention in a very simple and economical ,.
manner.
For the purpose of achieving a particularly simple overall construction and a favourable work flow the suction pump and/or the water supply may be connected to means for controlling their lowering in synchronism with the advancing of the fish, in particular with the conveying elements for the fish.
Preferably the water supply may comprise one or several slot nozzles. Thus the fluid can be forced precisely between the belly cavity walls and the intestines under pressure so as to enforce the loosening resp. separation even of firmly adhering intestines.
In order to be able to suck in the intestines tangentially when they have only been chopped to a relatively small degree, the suction pump may be arranged as a disc-shaped impeller pump comprising an impeller and a housing provided with at least one cutout portion along its circumference. In this connection it ls possible to achieve an adaptation to the -~
. ~ . , .
3 t , , ,, - , - ` ~ ,; :
S~5 belly cavities of varying fishes by a segment or sector shaping of the cutout portion.
According to another embodiment the cutout portion may be bordered at the entrance position of the impeller into the-housing by a bow-shaped severing tool provided with a cutting edge. This enables a simple and safe severing of the ligaments etc. of parts of the intestines already seized by ~ ~-suction.
, According to yet another embodiment of the invention the housing may be provided in the region of the cutout portion with a guide bracing against the belly sides of the vertebrae.
This helps to avoid that the suction pump immerges resp.
penetrates into the belly cavity too deeply and in an uncontrolled manner ::, . .
An embodiment of the present invention will now be more partlcularly described by way of example with reference to the accompanying schematic drawing. In this Fig. 1 shows an axonometric sectional ~iew of a , .
device suited for performing the invention ;
and Fig, 2 shows a side elevation of the suction pump.
In a frame (not shown) there are arranged reversing or deflection elements and a drive (also not shown) for an endless conveyor 2, the upper run of which is shown in Fig. 1. The conveyor 2 is provided with V-shaped longitudinal troughs 21, carries upwardly extending fork-shaped con~eying elements at a fixed distance between the longitudinal troughs ; 21, and runs in a conveying direction 23. Above the path or track of the conveyor 2 there are arranged consecutively - when seen in the conveying direction 23 - a slitting knife 3 driven to rotate, a water supply 4, and a suction pump 5.
The slltting knife 3 is arranged to yield in height in a `~
: , ~.
r ~ 4 ~ ~ ~
~.
6~
know~ manner and connected or provided with a non-illustrated known control device or arrangement. The water supply is formed as a slot nozzle or jet 43 charged by pressurized water and carried by a plvoted arm 42 mounted to swivel about a swivelling axis 41 fixed to the frame. The suction pump 5 is arranged as a disc-shaped impeller pump and comprises a ,~ .
housing 51, which is arranged to swivel about a swivel axis 58 aIso fixed to the frame. In the housing there is mounted a rotor shaft 59 driven to rotate in an appropriate manner, ` 10 this shaft carrying an impeller 60. The housing 51 has a U-shaped cross section, is provided with a tangential or lateral exit 57, at its peripheral part facing the conveyor
2, and carries a sector-shaped cutout portion 52, which is limited by a bow-shaped severing tool 53. The latter surrounds the impeller 60 closely and is provided with a cutting edge 54 facing the impeller 60. In the region of the cutout portion 52 there is arranged a guide 55, which limits the penetration depth of the suction pump 5 by contacting and ; gliding along the vertebrae. The guide 55 is also U-shaped - as shown in Fig. 2 - and has an outward chamf)er 56, but it may also be formed by a bow arranged in a curcular man-ner around the rotor shaft 59 and surrounding the cutout portion 52.
The method of operation of the device according to the invention is as follows:
A fish 1 lying with its back in the longitudinal ~; troughs 21 and being supported at its trailing head end by the conveyor element 22 is, during its passage underneath the slitting knife 3, provided with a cut in the region of its belly cavity and its gill cavity, the cut severing at least its belly wall. In consequence of this, the belly cavity is opened. A pressurized water jet emerging from the slot , .. . .
g~s nozzle 43 penetrates between the intestines formed by the ovaries, the gullet the stomack, and the gut, loosens these from the inner wall of the belly cavity and effects their floating. The suction pump 5, which thereupon dips into the belly cavity, seizes the intestines with its impeller 60 rotating at a high peripheral speed according to the shown ~ dart and chops resp. comminutes these by co-acting with *he `~ cutting edge 54 of the severing tool 53. At the same time,the impeller 60 creates a suction in the region of the cutout portion 52, which suction sucks, i.e. allows to flow the mixture of pressurized water and pertially comminuted intestines into t~e housing 51. This accelerated mixture leaves the housing 51 at the exit 57, from which it may be conducted from the path of the fish by means of a tube or hose, not shown in the drawing. In order to avoid the damaging of the -- fish by the rotating impeller 60, the penetration depth of the t'~
suction pump 5 is limited by the guide 55, coming to rest and -gliding on the under side, i.e. the side of the belly cavity, of the vertebrae of the fish.
In order to be able to remove safely the intestines of fish having voluminous intestines or intestines sticking ;
~'1 firmly together by salting, it may be advantageous to arrange two slot nozzles 43 adjacent to each other. The pressurized water jets of these can penetrate between the intestines and the belly flaps and the intestines are floated by ;~
lateral wash-out.
In order to improve the cleaning effect, it may be advantageous to use an external suction station, which may then be connected to the exit 57 of the housing 51.
It may also be advantageous to allow the impeller 60 to work against the moving direction of the fish; to this end the suction pump 5 will be arranged mirror-inverted to the vertical axis of Fig. 2.
The method of operation of the device according to the invention is as follows:
A fish 1 lying with its back in the longitudinal ~; troughs 21 and being supported at its trailing head end by the conveyor element 22 is, during its passage underneath the slitting knife 3, provided with a cut in the region of its belly cavity and its gill cavity, the cut severing at least its belly wall. In consequence of this, the belly cavity is opened. A pressurized water jet emerging from the slot , .. . .
g~s nozzle 43 penetrates between the intestines formed by the ovaries, the gullet the stomack, and the gut, loosens these from the inner wall of the belly cavity and effects their floating. The suction pump 5, which thereupon dips into the belly cavity, seizes the intestines with its impeller 60 rotating at a high peripheral speed according to the shown ~ dart and chops resp. comminutes these by co-acting with *he `~ cutting edge 54 of the severing tool 53. At the same time,the impeller 60 creates a suction in the region of the cutout portion 52, which suction sucks, i.e. allows to flow the mixture of pressurized water and pertially comminuted intestines into t~e housing 51. This accelerated mixture leaves the housing 51 at the exit 57, from which it may be conducted from the path of the fish by means of a tube or hose, not shown in the drawing. In order to avoid the damaging of the -- fish by the rotating impeller 60, the penetration depth of the t'~
suction pump 5 is limited by the guide 55, coming to rest and -gliding on the under side, i.e. the side of the belly cavity, of the vertebrae of the fish.
In order to be able to remove safely the intestines of fish having voluminous intestines or intestines sticking ;
~'1 firmly together by salting, it may be advantageous to arrange two slot nozzles 43 adjacent to each other. The pressurized water jets of these can penetrate between the intestines and the belly flaps and the intestines are floated by ;~
lateral wash-out.
In order to improve the cleaning effect, it may be advantageous to use an external suction station, which may then be connected to the exit 57 of the housing 51.
It may also be advantageous to allow the impeller 60 to work against the moving direction of the fish; to this end the suction pump 5 will be arranged mirror-inverted to the vertical axis of Fig. 2.
Claims (10)
1. A process for gutting fish, comprising the steps of conveying successively the non-decapitated fish lying on their backs and with their tail ends leading, opening the belly cavities by severing the belly walls while the fish are being advanced, and loosening and removing the intestines during the further transport of the fish, characterized in that after the opening of the belly cavities the intestines are floated by means of a fluid and removed by suction pumping on partial comminution and severing of the gullet, of the gut, and, if necessary, of the ligaments holding the intestines.
2. A device for gutting fish, comprising: a trough-shaped path for receiving the fish in a back-downward position, a conveyor for moving the fish in the direction of their longitudinal axes, a slitting knife above said trough-shaped path arranged to be lowered, and a cleaning tool also arranged to be lowered, comprising a U-shaped sheathing and being provided with a star-shaped rotating ejector, wherein a water supply is provided downstream of the slitting knife when seen in the conveying direction of said conveyor, and said cleaning tool is arranged as a suction pump.
3. A device as claimed in claim 2, wherein said suction pump is connected to means for controlling its lowering in synchronism with the advancing of the fish.
4. A device as claimed in claim 2, wherein said water supply is connected to means for controlling its lowering in synchronism with the advancing of the fish.
5. A device as claimed in claim 2, wherein said water supply comprises at least one slot nozzle.
6. A device as claimed in claim 2, wherein said suction pump is arranged as a disc-shaped impeller pump comprising an impeller and a housing provided with at least one cutout portion along its circumference.
7. A device as claimed in claim 6, wherein said cutout portion is segment-shaped.
8. A device as claimed in claim 6, wherein said cutout portion is sector-shaped.
9. A device as claimed in claim 6, wherein said cutout portion at the entrance position of said impeller into said housing is bordered by a bow-shaped severing tool provided with a cutting edge.
10. A device as claimed in claim 6, wherein said housing in the region of said cutout portion is provided with a guide bracing against the belly sides of the vertebrae.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA332,048A CA1109615A (en) | 1979-07-18 | 1979-07-18 | Process and device for gutting fish |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA332,048A CA1109615A (en) | 1979-07-18 | 1979-07-18 | Process and device for gutting fish |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1109615A true CA1109615A (en) | 1981-09-29 |
Family
ID=4114716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA332,048A Expired CA1109615A (en) | 1979-07-18 | 1979-07-18 | Process and device for gutting fish |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1109615A (en) |
-
1979
- 1979-07-18 CA CA332,048A patent/CA1109615A/en not_active Expired
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |