CN111053068B - Fish and shrimp separating device for trawl net - Google Patents
Fish and shrimp separating device for trawl net Download PDFInfo
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- CN111053068B CN111053068B CN201910951500.6A CN201910951500A CN111053068B CN 111053068 B CN111053068 B CN 111053068B CN 201910951500 A CN201910951500 A CN 201910951500A CN 111053068 B CN111053068 B CN 111053068B
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- 241000238557 Decapoda Species 0.000 title claims abstract description 70
- 241000251468 Actinopterygii Species 0.000 claims abstract description 121
- 241000143060 Americamysis bahia Species 0.000 claims abstract description 38
- 239000011229 interlayer Substances 0.000 claims abstract description 26
- 238000005096 rolling process Methods 0.000 claims description 45
- 238000000926 separation method Methods 0.000 claims description 25
- 230000001360 synchronised effect Effects 0.000 claims description 19
- 230000007246 mechanism Effects 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 14
- 230000008569 process Effects 0.000 claims description 10
- 230000005540 biological transmission Effects 0.000 claims description 9
- 230000009471 action Effects 0.000 claims description 8
- 230000005484 gravity Effects 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 239000010410 layer Substances 0.000 description 7
- 230000002349 favourable effect Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 241000894007 species Species 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K73/00—Drawn nets
- A01K73/02—Trawling nets
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K75/00—Accessories for fishing nets; Details of fishing nets, e.g. structure
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Abstract
The invention discloses a fish and shrimp separating device for a trawl net, and aims to provide a fish and shrimp separating device for a trawl net, which can automatically separate fish and shrimp in the trawl net, thereby effectively solving the problems that the current trawl net for catching shrimps needs to spend huge energy to separate fish and shrimp when fishermen treat fishery catches, and a great amount of fish is easily damaged and killed. The shrimp catching device comprises a bottom trawl, wherein the bottom trawl comprises a main net bag and a target net bag for catching shrimps, the target net bag is positioned above the main net bag, and the tail part of the main net bag is provided with a tail opening so that fish entering the main net bag can flow back into the sea through the tail opening; the fish and shrimp separating and selecting device comprises a supporting frame, a shaft rod, supporting rollers and a fish and shrimp separating interlayer, wherein the supporting frame is connected with the tail of the bottom trawl into a whole, the shaft rod is rotatably arranged on the supporting frame, the supporting rollers are arranged on the shaft rod and are used for supporting the supporting frame, and the fish and shrimp separating interlayer is arranged on the supporting frame and is positioned in the main net bag.
Description
Technical Field
The invention relates to the field of bottom trawls, in particular to a fish and shrimp separating device for a trawling net.
Background
The important characteristics of the shrimp-catching trawl fishery are the diversity of fish catch compositions and the high rejection rate of fish catch, wherein the fish catch compositions are fish and shrimps mostly. The combined catching and discarding of shrimp fishing affects the amount of resources of target and non-target species and the population structure, and the change of clusters in the sea, which not only results in great separation of efforts for fishermen to handle fish catches, but also causes great damage to non-target species, such as fish, and even causes great death of fish. In view of the above, the further research and improvement of the shrimp-catching trawl fishing gear have important significance for protecting economic fish and shrimp resources.
Disclosure of Invention
The invention aims to provide a fish and shrimp separating device for a trawl net, which can automatically separate fish and shrimps in the trawl net, thereby effectively solving the problems that the prior trawl net for catching shrimps needs great energy to separate fish and shrimp when fishermen handle fish and catch objects, and the fish and shrimp are easy to cause a great amount of damage and death.
The technical scheme of the invention is as follows:
a fish and shrimp separating device for a trawl net comprises: the bottom trawl comprises a main net bag and a target net bag for catching shrimps, the target net bag is positioned above the main net bag, the target net bag is communicated with the main net bag through a connecting port, and the tail of the main net bag is provided with a tail opening so that fish entering the main net bag can flow back into the sea through the tail opening; the fish and shrimp separating and selecting device comprises a supporting frame, a shaft rod, supporting rollers and a fish and shrimp separating interlayer, wherein the supporting frame is connected with the tail of a bottom trawl into a whole, the shaft rod is rotatably arranged on the supporting frame, the supporting rollers are arranged on the shaft rod and are used for supporting the supporting frame, the fish and shrimp separating interlayer is arranged on the supporting frame and is positioned in a main network bag, the supporting rollers are positioned on the outer side of the bottom trawl, the supporting frame is supported on the bottom of the sea through the supporting rollers, the fish and shrimp separating interlayer is composed of a plurality of rolling brushes which are rotatably arranged on the supporting frame through rotating shafts, the rotating shafts are parallel to the shaft rod, the fish and shrimp separating interlayer gradually extends towards the tail of the bottom trawl from bottom to top in an inclined mode, and one rolling brush positioned at the top of.
During the process of fishing by the bottom trawl, fish and shrimps on the sea bottom enter the main net bag through the net port of the bottom trawl and gradually move to the tail part of the main net bag under the action of water flow, and in the process, when the shrimps touch the hair on the rolling brush of the fish and shrimp separation interlayer, the shrimps bounce upwards and enter the target net bag through the connecting port by utilizing the habit that the shrimps bounce upwards after being surprised; when fish touches the fish and shrimp separation interlayer, the fish passes through the hair of the rolling brush under the action of the self gravity because the self gravity of the fish is larger, and then flows back into the sea through the tail opening, so that the separation of the fish and the shrimps entering the main net bag is realized; meanwhile, the characteristic that fishes at the bottom layer and near the bottom layer submerge after being frightened can be utilized, when the fishes touch the fish and shrimp separation interlayer, the fishes submerge actively and penetrate through the hair of the rolling brush, then flow back into the sea through the tail opening to realize the separation of the fishes and the shrimps entering the main net bag, so that the fishes and the shrimps in the shrimp catching net can be separated automatically, the problem that the existing shrimp catching trawl is effectively solved, fishermen need to spend huge energy to separate the fishes and the shrimps when processing the fishes and catching objects, the fishes penetrate through the hair of the rolling brush and flow back into the sea through the tail opening directly, the fishes are effectively protected from being damaged, and the problems that the existing shrimp catching trawl is easy to cause a large amount of damage and death to the fishes are solved effectively.
Preferably, the shaft lever is provided with a driving gear, a rotating shaft of one rolling brush in each rolling brush is provided with a driven gear meshed with the driving gear, and the rotating shafts of any two adjacent rolling brushes are connected through a synchronous belt transmission mechanism. So, at end trawl removal in-process, because supporting roller supports in the seabed, at supporting roller roll in-process, supporting roller will drive the driving gear rotation on the axostylus axostyle, and drive driven gear and a round brush that corresponds through the driving gear and rotate, and the rotation direction of this round brush is opposite with supporting roller's rotation direction, this round brush will drive each round brush synchronous syntropy through synchronous belt drive mechanism and rotate, so, can up carry the shrimp gradually through rotating the round brush, be favorable to making the shrimp through upwards bouncing, in order to get into target net bag through the connector.
Preferably, the drive gear and the driven gear are located outside the bottom trawl, and the synchronous belt drive mechanism is also located outside the bottom trawl. Therefore, the fish in the bottom trawl net is prevented from being damaged in the rotating process of the driving gear, the driven gear and the synchronous belt transmission mechanism.
Preferably, each synchronous belt transmission mechanism is located on the same side of the support frame, and the synchronous belt transmission mechanism and the driving gear are located on two opposite sides of the support frame. This is advantageous for the actual layout.
Preferably, the distance between the rotating shafts of two adjacent rolling brushes is the same, and the distance between the rotating shafts of two adjacent rolling brushes is 20-30 cm. In this way, a sufficient gap can be provided between two adjacent rolling brushes for fish to pass through.
Preferably, the bristles of the roll brushes extend in the radial direction of the rotating shaft, and the length of the bristles of each roll brush is 10-20 cm.
Preferably, the attachment port is adjacent the trailing opening.
Preferably, the support frame is located adjacent the tail of the bottom trawl.
The invention has the beneficial effects that: during the process of fishing by the bottom trawl, fish and shrimps on the sea bottom enter the main net bag through the net port of the bottom trawl and gradually move to the tail part of the main net bag under the action of water flow, and in the process, when the shrimps touch the hair on the rolling brush of the fish and shrimp separation interlayer, the shrimps bounce upwards and enter the target net bag through the connecting port by utilizing the habit that the shrimps bounce upwards after being surprised; when fish touches the fish and shrimp separation interlayer, the fish passes through the hair of the rolling brush under the action of the self gravity because the self gravity of the fish is larger, and then flows back into the sea through the tail opening, so that the separation of the fish and the shrimps entering the main net bag is realized; meanwhile, the characteristic that fishes at the bottom layer and near the bottom layer submerge after being frightened can be utilized, when the fishes touch the fish and shrimp separation interlayer, the fishes submerge actively and penetrate through the hair of the rolling brush, then flow back into the sea through the tail opening to realize the separation of the fishes and the shrimps entering the main net bag, so that the fishes and the shrimps in the shrimp catching net can be separated automatically, the problem that the existing shrimp catching trawl is effectively solved, fishermen need to spend huge energy to separate the fishes and the shrimps when processing the fishes and catching objects, the fishes penetrate through the hair of the rolling brush and flow back into the sea through the tail opening directly, the fishes are effectively protected from being damaged, and the problems that the existing shrimp catching trawl is easy to cause a large amount of damage and death to the fishes are solved effectively.
Drawings
Fig. 1 is a partial structure schematic view of a fish and shrimp separating device of a trawl net of the present invention.
Fig. 2 is a partial structure diagram of the direction a in fig. 1.
In the figure:
the device comprises a bottom trawl 1, a main net bag 1.1, a target net bag 1.2, a connecting port 1.3 and a tail opening 1.4;
fish shrimp separation selecting arrangement 2, braced frame 2.1, axostylus axostyle 2.2, supporting roller 2.3, fish shrimp separation interlayer 2.4, pivot 2.5, round brush 2.6, driving gear 2.7, driven gear 2.8, synchronous belt drive mechanism 2.9.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention are clearly explained and illustrated below with reference to the accompanying drawings, but the following embodiments are only preferred embodiments of the present invention, and not all embodiments. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative effort belong to the protection scope of the present invention.
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present scheme, and are not construed as limiting the scheme of the present invention.
These and other aspects of embodiments of the invention will be apparent with reference to the following description and attached drawings. In the description and drawings, particular embodiments of the invention have been disclosed in detail as being indicative of some of the ways in which the principles of the embodiments of the invention may be practiced, but it is understood that the scope of the embodiments of the invention is not limited thereby. On the contrary, the embodiments of the invention include all changes, modifications and equivalents coming within the spirit and terms of the claims appended hereto.
In the description of the present invention, it is to be understood that the terms "thickness", "upper", "lower", "horizontal", "top", "bottom", "inner", "outer", "circumferential", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., and "several" means one or more unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral connections, either mechanical or electrical, or communicating with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The first embodiment is as follows: as shown in figure 1, the trawl net fish and shrimp separating device comprises a bottom trawl net 1 and a fish and shrimp separating and selecting device 2. The bottom trawl 1 comprises a main net sack 1.1 and a target net sack 1.2 for catching shrimps. The target net bag is positioned above the main net bag, and the target net bag is communicated with the main net bag through a connecting port 1.3. The tail of the main net sac is provided with a tail opening 1.4, so that fish entering the main net sac can flow back into the sea through the tail opening. In this embodiment, the access port is proximate the rear opening.
As shown in fig. 1 and 2, the fish and shrimp separating and selecting device 2 comprises a supporting frame 2.1 connected with the tail of the bottom trawl into a whole, a shaft rod 2.2 rotatably arranged on the supporting frame, a supporting roller 2.3 arranged on the shaft rod and used for supporting the supporting frame, and a fish and shrimp separating interlayer 2.4 arranged on the supporting frame and located in the main net bag. In this embodiment, the support frame is near the tail of the bottom trawl. The supporting rollers are positioned on the outer side of the bottom trawl, and the supporting frame is supported on the seabed through the supporting rollers. In this embodiment, the number of the supporting rollers is two, and the two supporting rollers are located at two opposite sides of the supporting frame.
The fish and shrimp separation layer 2.4 is composed of a plurality of rolling brushes 2.6 which are rotatably arranged on the supporting frame through a rotating shaft 2.5. The rotating shaft is parallel to the shaft lever. The fish and shrimp separation interlayer gradually extends from bottom to top towards the tail of the bottom trawl in an inclined mode, and a rolling brush located at the top of the fish and shrimp separation interlayer extends into the connecting port.
During the process of fishing by the bottom trawl, fish and shrimps on the sea bottom enter the main net bag through the net port of the bottom trawl and gradually move to the tail part of the main net bag under the action of water flow, and in the process, when the shrimps touch the hair on the rolling brush of the fish and shrimp separation interlayer, the shrimps bounce upwards and enter the target net bag through the connecting port by utilizing the habit that the shrimps bounce upwards after being surprised; when fish touches the fish and shrimp separation interlayer, the fish passes through the hair of the rolling brush under the action of the self gravity because the self gravity of the fish is larger, and then flows back into the sea through the tail opening, so that the separation of the fish and the shrimps entering the main net bag is realized; meanwhile, the characteristic that fishes at the bottom layer and near the bottom layer submerge after being frightened can be utilized, when the fishes touch the fish and shrimp separation interlayer, the fishes submerge actively and penetrate through the hair of the rolling brush, then flow back into the sea through the tail opening to realize the separation of the fishes and the shrimps entering the main net bag, so that the fishes and the shrimps in the shrimp catching net can be separated automatically, the problem that the existing shrimp catching trawl is effectively solved, fishermen need to spend huge energy to separate the fishes and the shrimps when processing the fishes and catching objects, the fishes penetrate through the hair of the rolling brush and flow back into the sea through the tail opening directly, the fishes are effectively protected from being damaged, and the problems that the existing shrimp catching trawl is easy to cause a large amount of damage and death to the fishes are solved effectively.
Further, as shown in fig. 2, a driving gear 2.7 is provided on the shaft 2.2. A driven gear 2.8 meshed with the driving gear is arranged on a rotating shaft 2.5 of one of the rolling brushes. The rotating shafts of any two adjacent rolling brushes are connected through a synchronous belt transmission mechanism 2.9. So, at end trawl removal in-process, because supporting roller supports in the seabed, at supporting roller roll in-process, supporting roller will drive the driving gear rotation on the axostylus axostyle, and drive driven gear and a round brush that corresponds through the driving gear and rotate, and the rotation direction of this round brush is opposite with supporting roller's rotation direction, this round brush will drive each round brush synchronous syntropy through synchronous belt drive mechanism and rotate, so, can up carry the shrimp gradually through rotating the round brush, be favorable to making the shrimp through upwards bouncing, in order to get into target net bag through the connector.
Furthermore, the driving gear and the driven gear are located on the outer side of the bottom trawl, and the synchronous belt transmission mechanism is also located on the outer side of the bottom trawl. Therefore, the fish in the bottom trawl net is prevented from being damaged in the rotating process of the driving gear, the driven gear and the synchronous belt transmission mechanism.
Each synchronous belt drive mechanism is located braced frame and leads to same one side, synchronous belt drive mechanism and driving gear are located braced frame's relative both sides. This is advantageous for the actual layout.
Further, the distance between the rotating shafts of two adjacent rolling brushes is the same, the distance between the rotating shafts of two adjacent rolling brushes is 20-30 cm, and specifically, the distance between the rotating shafts of two adjacent rolling brushes is 30 cm. In this way, a sufficient gap can be provided between two adjacent rolling brushes for fish to pass through.
The bristles of the rolling brushes extend along the radial direction of the rotating shaft, the length of the bristles of each rolling brush is 10-20 cm, and specifically, the length of the bristles of each rolling brush is 20 cm. In this embodiment, the bristles of the respective rolling brushes are flexible bristles so that fish can smoothly pass through the bristles of the rolling brushes.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and all simple modifications, alterations and equivalents of the above embodiments according to the technical spirit of the present invention are still within the protection scope of the technical solution of the present invention.
Claims (8)
1. The utility model provides a drags shrimp net fish shrimp separator, characterized by includes:
the bottom trawl comprises a main net bag and a target net bag for catching shrimps, the target net bag is positioned above the main net bag, the target net bag is communicated with the main net bag through a connecting port, and the tail of the main net bag is provided with a tail opening so that fish entering the main net bag can flow back into the sea through the tail opening;
the fish and shrimp separating and selecting device comprises a supporting frame, a shaft rod, supporting rollers and a fish and shrimp separating interlayer, wherein the supporting frame is connected with the tail of a bottom trawl into a whole, the shaft rod is rotatably arranged on the supporting frame, the supporting rollers are arranged on the shaft rod and are used for supporting the supporting frame, the fish and shrimp separating interlayer is arranged on the supporting frame and is positioned in a main network bag, the supporting rollers are positioned on the outer side of the bottom trawl, the supporting frame is supported on the sea bottom through the supporting rollers, the fish and shrimp separating interlayer is composed of a plurality of rolling brushes which are rotatably arranged on the supporting frame through rotating shafts, the rotating shafts are parallel to the shaft rod, the fish and shrimp separating interlayer gradually extends towards the tail of the bottom trawl from bottom to top in an inclined mode, and one rolling brush positioned at the top of the fish and shrimp separating interlayer extends into the connecting port; a gap is reserved between every two adjacent rolling brushes for fish to pass through; the fish and shrimp separation and selection device gradually conveys the shrimps upwards by rotating the rolling brush;
during the process of fishing by the bottom trawl, fish and shrimps on the sea bottom enter the main net bag through the net port of the bottom trawl and gradually move to the tail part of the main net bag under the action of water flow, and in the process, when the shrimps touch the hair on the rolling brush of the fish and shrimp separation interlayer, the shrimps bounce upwards and enter the target net bag through the connecting port by utilizing the habit that the shrimps bounce upwards after being surprised; when the fish touches the fish and shrimp separation interlayer, the fish passes through the hair of the rolling brush under the action of self gravity and then flows back into the sea through the tail opening, so that the separation of the fish and the shrimps entering the main net bag is realized.
2. The fish and shrimp separating device with the trawl net as claimed in claim 1, wherein the shaft rod is provided with a driving gear, the rotating shaft of one of the rolling brushes is provided with a driven gear engaged with the driving gear, and the rotating shafts of any two adjacent rolling brushes are connected through a synchronous belt transmission mechanism.
3. The fish and shrimp separating device with trawl net as claimed in claim 2, wherein the driving gear and the driven gear are located outside the bottom trawl net, and the synchronous belt transmission mechanism is located outside the bottom trawl net.
4. A trawl net fish and shrimp separating device as claimed in claim 3, wherein the synchronous belt drive mechanisms are located on the same side of the support frame, the synchronous belt drive mechanisms and the drive gear are located on opposite sides of the support frame.
5. The device for separating fish and shrimp in a trawl net according to claim 1, 2, 3 or 4, wherein the distance between the rotating shafts of two adjacent rolling brushes is the same, and the distance between the rotating shafts of two adjacent rolling brushes is 20-30 cm.
6. The apparatus as claimed in claim 5, wherein the bristles of the rolling brushes extend in a radial direction of the shaft, and the length of each of the bristles of the rolling brushes is 10-20 cm.
7. The apparatus as claimed in claim 1, 2, 3 or 4, wherein the connection port is near the tail opening.
8. A trawl net fish and shrimp separating apparatus as claimed in claim 1 or 2 or 3 or 4 wherein the support frame is adjacent the tail of the bottom trawl.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910951500.6A CN111053068B (en) | 2019-10-08 | 2019-10-08 | Fish and shrimp separating device for trawl net |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910951500.6A CN111053068B (en) | 2019-10-08 | 2019-10-08 | Fish and shrimp separating device for trawl net |
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| CN111053068A CN111053068A (en) | 2020-04-24 |
| CN111053068B true CN111053068B (en) | 2021-09-03 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112243920A (en) * | 2020-11-11 | 2021-01-22 | 倪略凯 | Red shrimp sea is caught and is used fish shrimp separator |
| CN112931435B (en) * | 2021-02-20 | 2022-07-01 | 青岛黄海学院 | Sea cucumber fishing robot |
| CN113180016B (en) * | 2021-05-24 | 2022-06-28 | 浙江海洋大学 | Trawl fishing device and using method thereof |
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