A gillnet device for effectively releasing marine litter

Abstract

The present application discloses a kind of effective release of marine litter eel fry netting device, to provide a kind of effective release of marine litter eel fry netting device capable of effectively isolating and automatically releasing into net into garbage.It includes eel fry collector and netting with net bag, netting includes: front net, which is open at both ends, the rear end of the front net is connected to the rear frame; rear net, which is open at the front end, the front end of the rear net is connected to the front frame, and a separation net is arranged in the front frame; the eel fry collector is installed at the end of the rear net; a guide is arranged on the rear frame, and the front frame moves along the guide; a resilient member is arranged, and the front frame is abutted against the rear frame under the action of the resilient member, so that the front end of the rear net is butted with the rear end of the front net; when the front frame moves backward along the guide and the front frame is separated from the rear frame, a garbage discharge port is formed between the front frame and the rear frame.

Description

Technical Field

[0001] The invention relates to the field of eel fry capture, and in particular to an eel fry netting device for effectively releasing marine garbage. Background Art

[0002] Fry, the juvenile form of the Japanese eel, is found along the coast and in estuaries of my country from Liaoning to Hainan. Fry nets are a traditional method used by coastal fishermen to catch them. To date, due to the lack of substantial breakthroughs in large-scale fry production technology, domestically and internationally, fry caught with these nets are virtually the only source of fry for Japanese eel farming. These fry are also very expensive. Due to their small size, they are often priced per tail, with prices reaching over 20 yuan per tail. Fry nets are stationary nets, secured with stakes or anchors at river estuaries and other locations where eels flow. These nets are typically framed. The net's mouth is secured to the frame with ropes, and a fry collector is housed in a bag at the end of the net.

[0003] The current eel fry net has the following shortcomings during use. Since there is a lot of floating garbage and suspended garbage in the waters of river estuaries, the eel fry net is made of dense mesh, the mesh is very small (even a toothpick cannot pass through it), and it is fixed in the water for a long time, which allows a large amount of garbage to flow into the net and block the sac net, resulting in the vast majority of eels being unable to enter the eel fry collector at the end of the net. In severe cases, the net may even explode and the fish may escape, which seriously affects the eel fry capture yield. Summary of the Invention

[0004] The purpose of the present invention is to overcome the problem in the prior art that the eel fry net is blocked by garbage in the bag net, resulting in that most eels cannot enter the eel fry collector at the end of the net, which seriously affects the eel fry capture yield. The present invention provides an eel fry net device that can effectively isolate and automatically release garbage entering the net and effectively release marine garbage.

[0005] The technical solution of the present invention is:

[0006] An eel fry netting device for effectively releasing marine debris comprises an eel fry collector and a netting device with a net bag, wherein the netting device comprises:

[0007] A front net with openings at both ends, wherein the rear end edge of the front net is connected to the rear frame;

[0008] The rear net is open at the front end, the front end edge of the rear net is connected to the front frame, an isolation net is arranged inside the front frame, and the eel fry collector is installed at the end of the rear net;

[0009] A guide is provided on the rear frame, and the front frame moves along the guide;

[0010] An elastic member, wherein the front frame is pressed against the rear frame under the action of the elastic member, so that the front port of the rear net is docked with the rear port of the front net;

[0011] When the front frame moves backward along the guide piece and separates the front frame from the rear frame, a garbage discharge port is formed between the front frame and the rear frame.

[0012] This invention relates to a device for effectively releasing marine debris from an eel fry net. During the process of capturing eel fry, debris entering through the net opening (i.e., the front end of the front net) passes through the front net and is isolated by the isolation net inside the front frame. The eel fry can then pass through the isolation net into the net pocket of the rear net and be collected by the eel fry collector at the end. As more debris accumulates on the isolation net, the impact force exerted by the water flow on the isolation net gradually increases. When the impact force exerted on the isolation net exceeds the force exerted by the elastic member on the front frame, the isolation net drives the front frame backward along the guide member, separating the front and rear frames. At this point, a garbage discharge port is formed between the front and rear frames, through which the debris accumulated on the isolation net is discharged. After the accumulated debris on the isolation net is discharged, the front frame again moves forward along the guide member under the action of the elastic member and abuts against the rear frame, causing the front end of the rear net to mate with the rear end of the front net. Therefore, the eel fry net setting device of the present invention that effectively releases marine garbage can effectively isolate and automatically release the garbage that enters the net during the process of setting the net to capture eel fry, thereby effectively solving the problem in the existing technology that the eel fry net is blocked by garbage in the bag net, resulting in the vast majority of eel fry being unable to enter the eel fry collector at the end of the net, seriously affecting the eel fry capture yield.

[0013] As an advantage, the net further comprises an isolation net adjusting member, which is connected between the front net and the middle of the isolation net;

[0014] When the front frame abuts against the rear frame, the middle portion of the isolation net protrudes backwards;

[0015] As the front frame moves backward along the guide, the middle portion of the isolation net moves forward relative to the front frame under the action of the isolation net adjusting member, causing the middle portion of the isolation net to protrude forward. This facilitates the formation of a garbage discharge outlet between the front and rear frames, and allows garbage on the isolation net to be discharged through the garbage discharge outlet along the isolation net under the action of the water flow. Specifically, when the front frame abuts the rear frame, the middle portion of the isolation net protrudes backward, and garbage on the isolation net gathers in the middle portion of the isolation net and does not abut the inner wall of the front net. This allows the entire impact force of the water flow on the garbage to act on the isolation net, which helps overcome the force of the elastic member and causes the front frame to move backward along the guide and separate from the rear frame to form the garbage discharge outlet. At the same time, as the front frame moves backward along the guide to form the garbage discharge outlet, the middle portion of the isolation net can also move forward relative to the front frame under the action of the isolation net adjusting member, causing the middle portion of the isolation net to protrude forward, allowing garbage on the isolation net to be discharged through the garbage discharge outlet along the isolation net under the action of the water flow.

[0016] As an example, the isolation net adjusting member is an adjusting rope, one end of which is connected to the front net and the other end of which is connected to the middle of the isolation net. This solution uses the adjusting rope as the isolation net adjusting member, which has a simple structure and is easy to install.

[0017] Preferably, the isolation net adjustment member is an adjustment rod, one end of which is connected to the front net, the other end of which passes through the mesh in the middle of the isolation net, and a baffle is provided at the other end of the adjustment rod. This solution uses the adjustment rod as the isolation net adjustment member, and its structure is simple.

[0018] Preferably, the isolation net adjustment member is an adjustment rod, and the isolation net is an elastic mesh panel. One end of the adjustment rod is connected to the front mesh, and the other end of the adjustment rod passes through the mesh holes in the middle of the isolation net. The adjustment rod is provided with a front stopper and a rear stopper, and the isolation net is positioned between the front stopper and the rear stopper. In this solution, the elastic mesh panel is positioned in the isolation net, and the adjustment rod and the front and rear stoppers are used as the isolation net adjustment member. In this way, the front stopper can push the middle portion of the elastic mesh panel backward, causing the middle portion of the elastic mesh panel to protrude rearward; and the rear stopper can push the middle portion of the elastic mesh panel forward, causing the elastic mesh panel to protrude rearward.

[0019] Preferably, the mesh size of the isolation net is larger than the mesh size of the front net, and the mesh size of the isolation net is larger than the mesh size of the rear net.

[0020] Preferably, a buoyancy frame is further included, which is surrounded by four upper, lower, left and right frames. The front port of the front net is located in the buoyancy frame, and the edge of the front port of the front net is connected to the buoyancy frame by a connecting rope. There is a gap between the edge of the front port of the front net and the four upper, lower, left and right frames of the buoyancy frame, and the gap forms a garbage outlet. In this way, when the eel fry net setting device is setting the net to capture eels, the upper frame of the buoyancy frame will float on the water surface, and floating garbage floating on the water surface will flow away through the garbage outlet, effectively reducing the amount of floating garbage entering the net bag of the net; thereby further effectively solving the problem of the existing eel fry net setting technology that a large amount of garbage flows into the net, the garbage blocks the bag net, resulting in the vast majority of eels being unable to enter the eel fry collector at the end of the net, seriously affecting the eel fry capture yield.

[0021] Preferably, the device further comprises a buoyancy member, wherein the front end edge of the front net is connected to the net opening frame, and the buoyancy member and the net opening frame are connected by a connecting rope. Thus, when the eel fry net setting device is setting the net to capture eels, the buoyancy member will float on the water surface, and the net opening frame will be suspended below the buoyancy member. This prevents floating debris on the water surface from entering the net pocket, and also allows the fishing depth of the net to be adjusted by adjusting the length of the connecting rope.

[0022] Preferably, the guide member is a guide rod, and the front frame is provided with a sliding sleeve that cooperates with the guide rod. In this way, it is ensured that the front frame can move stably and smoothly along the guide member.

[0023] As preferably, the net bag of the rear net gear reduces gradually from front to back, and the net bag of the front net gear reduces gradually from front to back. Like this, the eel fry that helps to enter the net bag of the net gear gathers in the eel fry collector at the end of the net gear and collects.

[0024] The beneficial effects of the present invention are: it can effectively isolate and automatically release the garbage that enters the net, effectively release marine garbage, thereby effectively solving the problem in the existing technology that the eel fry net is blocked by garbage, resulting in the vast majority of eel fry being unable to enter the eel fry collector at the end of the net, seriously affecting the eel fry capture yield. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a three-dimensional structural schematic diagram of an eel fry netting device for effectively releasing marine garbage according to the specific embodiment 1 and the specific embodiment 2 of the present invention.

[0026] Figure 2 It is a partial structural schematic diagram of an embodiment of the present invention's eel fry netting device for effectively releasing marine garbage, in a state where the front frame is against the rear frame.

[0027] Figure 3This is a partial structural diagram of an eel fry netting device for effectively releasing marine garbage of the present invention, in a state where the front frame and the rear frame are separated and the middle part of the isolation net protrudes forward.

[0028] Figure 4 It is a partial structural schematic diagram of another embodiment of the eel fry netting device for effectively releasing marine garbage of the present invention, in a state where the front frame is against the rear frame.

[0029] Figure 5 This is a three-dimensional structural schematic diagram of a net-setting device for eel fry that effectively releases marine garbage according to the third specific embodiment of the present invention.

[0030] Figure 6 This is a three-dimensional structural schematic diagram of a net-setting device for eel fry that effectively releases marine garbage according to a fourth specific embodiment of the present invention.

[0031] In the picture:

[0032] Eel fry collector 1;

[0033] Front net 2, rear frame 2.1, net port frame 2.2;

[0034] Rear net 3, front frame 3.1, sliding sleeve 3.2;

[0035] Guide 4, end stop 4.1;

[0036] Isolation net 5;

[0037] Isolation net adjustment member 6, adjustment rope 6.1, adjustment rod 6.2, baffle 6.3;

[0038] Rope 7;

[0039] elastic member 8;

[0040] Buoyancy frame 9;

[0041] Garbage passing through 10;

[0042] Buoyancy element 11. DETAILED DESCRIPTION

[0043] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments:

[0044] Specific embodiment 1, as Figure 1 、 Figure 2 As shown, a device for setting an eel fry net for effectively releasing marine garbage includes an eel fry collector 1 and a net with a net bag.

[0045] The net includes a front net 2 with openings at both ends, a rear net 3 with an opening at the front end, a guide member 4, an isolation net 5, and an elastic member 8. The front end edge of the front net 2 is connected to the net opening frame 2.2. The rear end edge of the front net 2 is connected to the rear frame 2.1. The front end edge of the rear net 3 is connected to the front frame 3.1. The isolation net 5 is arranged within the front frame 3.1, and the edge of the isolation net 5 is connected to the front frame 3.1. The isolation net 5 blocks the front end of the rear net 3. The eel fry collector 1 is installed at the end of the rear net 3. The eel fry collector 13 includes a collection bucket. The specific structure of the eel fry collector 13 is prior art and is not the invention of this application. Therefore, this application does not elaborate on conventional technical means such as the specific structure and working method of the eel fry collector 13.

[0046] The guide member 4 is provided on the rear frame 2.1. The front frame 3.1 moves along the guide member 4. The front frame 3.1 abuts against the rear frame 2.1 under the action of the elastic member 8, so that the front end of the rear net 3 is docked with the rear end of the front net 2.

[0047] When the front frame 3.1 moves backward along the guide member 4 and separates the front frame 3.1 from the rear frame 2.1, a garbage discharge port is formed between the front frame 3.1 and the rear frame 2.1.

[0048] In this embodiment, the net opening frame 2.2 connected to the front port of the front net 2 serves as a frame for connecting the rope 7. Specifically, in the actual use of the eel fry net setting device for effectively releasing marine garbage in this embodiment, the rope 7 for fixing the eel fry net setting device is connected to the net opening frame 2.2 of the front port of the front net 2, and the rope 7 is connected to a pile or anchor, thereby fixing an eel fry capturing net at the estuary of a river.

[0049] In the present embodiment, a device for setting a net for eel fry that effectively releases marine debris is employed. During the process of setting a net for catching eel fry, debris entering through the net opening (i.e., the front opening of the front net) passes through the front net 2 and is isolated by the isolation net 5 within the front frame 3.1. The eel fry can then pass through the isolation net 5 into the net pocket of the rear net 3 and be collected by the eel fry collector 1 at the end. As more debris accumulates on the isolation net 5, the impact force exerted by the water flow on the isolation net 5 gradually increases. When the impact force exerted on the isolation net 5 exceeds the force exerted by the elastic member 8 on the front frame 3.1, the isolation net 5 drives the front frame 3.1 backward along the guide member 4, separating the front frame 3.1 from the rear frame 2.1. At this point, a garbage discharge port is formed between the front frame 3.1 and the rear frame 2.1, through which the debris accumulated on the isolation net 5 is discharged. After the garbage accumulated on the isolation net 5 is discharged, the front frame 3.1 will again move forward along the guide member 4 under the action of the elastic member 8 and abut against the rear frame 2.1, so that the front end of the rear net 3 is connected to the rear end of the front net 2. Therefore, the eel fry net setting device of this solution can effectively isolate and automatically release the garbage that has entered the net during the process of setting the net to capture eels, thereby effectively solving the problem of the existing eel fry setting net being blocked by garbage, resulting in the vast majority of eels being unable to enter the eel fry collector 1 at the end of the net, seriously affecting the eel fry capture yield.

[0050] Specifically, such as Figure 1 、 Figure 2 As shown, the guide member 4 is a guide rod that extends in the front-to-back direction of the front net 2. The front end of the guide rod is fixed to the rear frame 2.1. The guide rod is located behind the front net 2. The rear end of the guide rod is provided with an end stop 4.1. The front frame 3.1 is provided with a sliding sleeve 3.2 that cooperates with the guide rod.

[0051] In this embodiment, the elastic member 8 is a compression spring, which is sleeved on the guide rod. The front end of the compression spring abuts the sliding sleeve 3.2 of the front frame 3.1, and the rear end of the compression spring abuts the end stop 4.1. The elastic member 8 acts to abut the front frame 3.1 against the rear frame 2.1, thereby docking the front end of the rear net 3 with the rear end of the front net 2.

[0052] Of course, it should be noted that the elastic member 8 can also be a tension spring or a rubber band. The tension spring or rubber band connects the front frame 3.1 and the rear frame 2.1, so that the front frame 3.1 is pressed against the rear frame 2.1 under the action of the elastic member 8, thereby connecting the front end of the rear net 3 with the rear end of the front net 2.

[0053] The mesh size of the isolation net 5 is larger than the mesh size of the front net 2 , and the mesh size of the isolation net 5 is larger than the mesh size of the rear net 3 .

[0054] The net bag of rear net gear 3 reduces gradually from front to back, and the net bag of front net gear 2 reduces gradually from front to back. Like this, the eel fry that helps to enter the net bag of net gear gathers in the eel fry collector 1 at the end of net gear and collects.

[0055] In this embodiment, the network port frame 2.2 is rectangular. Of course, it should be noted that the network port frame 2.2 can also be circular, square, or other shapes.

[0056] The rear frame 2.1 is rectangular. The front frame 3.1 and the rear frame 2.1 are also rectangular. Of course, it should be noted that the rear frame 2.1 can also be circular, square, or other shapes. The front frame 3.1 and the rear frame 2.1 can also be circular, square, or other shapes.

[0057] Specific embodiment 2, as Figure 1 、 Figure 2 、 Figure 3 As shown, a device for setting an eel fry net for effectively releasing marine garbage includes an eel fry collector 1 and a net with a net bag.

[0058] The stretching net comprises a front net 2 with openings at both ends, a rear net 3 with an opening at the front end, a guide 4, an isolation net 5, an elastic member 8 and an isolation net adjusting member 6.

[0059] The front end edge of the front net 2 is connected to the net opening frame 2.2. The rear end edge of the front net 2 is connected to the rear frame 2.1. The front end edge of the rear net 3 is connected to the front frame 3.1. The isolation net 5 is disposed within the front frame 3.1, with the edge of the isolation net 5 connected to the front frame 3.1, and the isolation net 5 shields the front end of the rear net 3. The eel fry collector 1 is mounted at the end of the rear net 3. The eel fry collector 13 includes a collection bucket. The specific structure of the eel fry collector 13 is prior art and is not the invention of this application. Therefore, this application does not elaborate on conventional technical means such as the specific structure and working method of the eel fry collector 13.

[0060] The guide member 4 is provided on the rear frame 2.1. The front frame 3.1 moves along the guide member 4. The front frame 3.1 abuts against the rear frame 2.1 under the action of the elastic member 8, so that the front end of the rear net 3 is docked with the rear end of the front net 2.

[0061] When the front frame 3.1 moves backward along the guide member 4 and separates the front frame 3.1 from the rear frame 2.1, a garbage discharge port is formed between the front frame 3.1 and the rear frame 2.1.

[0062] The isolation net adjusting member 6 is connected to the middle of the front net 2 and the isolation net 5 .

[0063] like Figure 2 As shown, when the front frame 3.1 abuts against the rear frame 2.1, the middle portion of the isolation net 5 protrudes backward.

[0064] As Figure 3 shown, in the process of moving the front frame 3.1 along the guide 4 backward, the middle part of the isolation net 5 will move forward relative to the front frame 3.1 under the action of the isolation net adjusting member 6, and make the middle part of the isolation net 5 protrude forward.

[0065] In this embodiment, as Figure 1 shown, the front port connected net port frame 2.2 of the front net tool 2 serves as the frame for connecting the rope 7. Specifically, in actual use, the rope 7 for fixing the eel fry netting device is connected to the net port frame 2.2 of the front port of the front net tool 2, and the rope 7 is connected with a stake or an anchor, so as to fix the eel fry catching net at the estuary of a river.

[0066] In the process of capturing eel fry by the net, the garbage entering from the net port (i.e. the front port of the front net tool 2) of the net tool will be isolated by the isolation net 5 in the front frame 3.1 after passing through the front net tool 2, and the eel fry can enter the net bag of the rear net tool 3 through the isolation net 5 and be collected by the eel fry collector 1 at the rear end. As the garbage accumulated on the isolation net 5 increases, the water flow impact force on the isolation net 5 also gradually increases. When the water flow impact force on the isolation net 5 is greater than the force of the elastic member 8 acting on the front frame 3.1, the isolation net 5 will drive the front frame 3.1 to move backward along the guide 4, so that the front frame 3.1 is separated from the rear frame 2.1. At this time, a garbage discharge port is formed between the front frame 3.1 and the rear frame 2.1, and the garbage accumulated on the isolation net 5 will be discharged through the garbage discharge port. After the garbage accumulated on the isolation net 5 is discharged, the front frame 3.1 will move forward along the guide 4 again under the action of the elastic member 8 and abut against the rear frame 2.1, so that the front port of the rear net tool 3 is butted with the rear port of the front net tool 2. Thus, the eel fry netting device for effectively releasing marine garbage can effectively isolate and automatically release the garbage entering the net tool during the process of capturing eel fry by the net, thereby effectively solving the problem that the eel fry netting is blocked by garbage, so that most of the eel fry cannot enter the eel fry collector 1 at the rear end of the net tool, and the eel fry catching yield is seriously affected.

[0067] In addition, the arrangement of the isolation net adjusting member 6 can also realize that the garbage discharge port is formed between the front frame 3.1 and the rear frame 2.1, which is beneficial to improve the timeliness of the garbage release on the isolation net 5; and the garbage on the isolation net 5 can be discharged along the isolation net 5 through the garbage discharge port under the action of the water flow, so that the garbage on the isolation net 5 can be effectively released. Specifically, when the front frame 3.1 abuts against the rear frame 2.1, the middle part of the isolation net 5 protrudes backward, the garbage on the isolation net 5 is gathered in the middle part of the isolation net 5 and does not abut against the inner wall of the front net 2, so that the water flow impact force on the garbage is fully applied to the isolation net 5, which is beneficial to overcome the force of the elastic member 8, so that the front frame 3.1 moves backward along the guide member 4 and separates from the rear frame 2.1 to form the garbage discharge port; at the same time, in the process that the front frame 3.1 moves backward along the guide member 4 to form the garbage discharge port, the middle part of the isolation net 5 moves forward relative to the front frame 3.1 under the action of the isolation net adjusting member 6, and the middle part of the isolation net 5 protrudes forward, so that the garbage on the isolation net 5 can be discharged along the isolation net 5 through the garbage discharge port under the action of the water flow, thereby the garbage on the isolation net 5 can be effectively released.

[0068] Specifically, as shown in Figure 2 the guide member 4 is a guide rod, the guide rod extends along the front-rear direction of the front net 2, and the front end of the guide rod is fixed on the rear frame 2.1. The guide rod is located behind the front net 2. The rear end of the guide rod is provided with an end block 4.1. The front frame 3.1 is provided with a sliding sleeve 3.2 matched with the guide rod.

[0069] In the embodiment, the elastic member 8 is a compression spring, the compression spring is sleeved on the guide rod, the front end of the compression spring abuts against the sliding sleeve 3.2 of the front frame 3.1, and the rear end of the compression spring abuts against the end block 4.1. The front frame 3.1 abuts against the rear frame 2.1 under the action of the elastic member 8, so that the front end port of the rear net 3 is butted against the rear end port of the front net 2.

[0070] Of course, it should be noted that the elastic member 8 can also be a tension spring or a rubber band. The tension spring or the rubber band connects the front frame 3.1 and the rear frame 2.1, so that the front frame 3.1 abuts against the rear frame 2.1 under the action of the elastic member 8, and then the front end port of the rear net 3 is butted against the rear end port of the front net 2.

[0071] The guide rod is also provided with a limiting block (not shown in the figure). The limiting block is located between the end block 4.1 and the sliding sleeve 3.2. As shown in Figure 3 when the front frame 3.1 moves backward along the guide member 4 and the sliding sleeve 3.2 of the front frame 3.1 abuts against the limiting block, the front frame 3.1 separates from the rear frame 2.1, a garbage discharge port is formed between the front frame 3.1 and the rear frame 2.1, and the middle part of the isolation net 5 protrudes forward.

[0072] The mesh size of the isolation net 5 is larger than the mesh size of the front net 2 , and the mesh size of the isolation net 5 is larger than the mesh size of the rear net 3 .

[0073] The net bag of rear net gear 3 reduces gradually from front to back, and the net bag of front net gear 2 reduces gradually from front to back. Like this, the eel fry that helps to enter the net bag of net gear gathers in the eel fry collector 1 at the end of net gear and collects.

[0074] In this embodiment, the network port frame 2.2 is rectangular. Of course, it should be noted that the network port frame 2.2 can also be circular, square, or other shapes.

[0075] The rear frame 2.1 is rectangular. The front frame 3.1 and the rear frame 2.1 are also rectangular. Of course, it should be noted that the rear frame 2.1 can also be circular, square, or other shapes. The front frame 3.1 and the rear frame 2.1 can also be circular, square, or other shapes.

[0076] In the first implementation of this embodiment, Figure 2 、 Figure 3 As shown, the isolation net adjustment member 6 is an adjustment rope 6.1. The isolation net 5 is made of a flexible net. One end of the adjustment rope 6.1 is connected to the front net 2. Specifically, a center rod is provided in the middle of the rear frame 2.1. One end of the adjustment rope 6.1 is connected to the middle of the center rod of the rear frame 2.1 of the front net 2. The other end of the adjustment rope 6.1 is connected to the middle of the isolation net 5. This solution uses the adjustment rope 6.1 as the isolation net adjustment member 6, which has a simple structure and is easy to install. When the front frame 3.1 abuts against the rear frame 2.1, the middle part of the isolation net 5 protrudes backward under the impact of the water flow. When the front frame 3.1 moves backward along the guide member 4 and the sliding sleeve 3.2 of the front frame 3.1 abuts against the limit block, the middle part of the isolation net 5 moves forward relative to the front frame 3.1 under the action of the adjustment rope 6.1, causing the middle part of the isolation net 5 to protrude forward.

[0077] In the second implementation of this embodiment, Figure 4As shown, the isolation net adjustment member 6 is an adjustment rod 6.2. The isolation net 5 is made of a flexible net. One end of the adjustment rod 6.2 is connected to the front net 2. Specifically, a middle rod is provided in the middle of the rear frame 2.1. One end of the adjustment rod 6.2 is connected to the middle of the middle rod of the rear frame 2.1 of the front net 2. The other end of the adjustment rod 6.2 passes through the mesh in the middle of the isolation net 5. The other end of the adjustment rod 6.2 is provided with a baffle 6.3. The baffle 6.3 is located behind the isolation net 5. This solution uses the adjustment rod 6.2 as the isolation net adjustment member 6, and its structure is simple. When the front frame 3.1 abuts against the rear frame 2.1, the middle of the isolation net 5 protrudes backward under the impact of the water flow. When the front frame 3.1 moves backward along the guide member 4 and the sliding sleeve 3.2 of the front frame 3.1 abuts against the limit block, the middle part of the isolation net 5 moves forward relative to the front frame 3.1 under the action of the adjustment rod 6.2, and the middle part of the isolation net 5 protrudes forward.

[0078] In a third embodiment of this embodiment, the isolation net adjustment member 6 is an adjustment rod 6.2, and the isolation net 5 is an elastic net plate. The elastic net plate has a spherical structure. One end of the adjustment rod 6.2 is connected to the front net 2. Specifically, a middle rod is provided in the middle of the rear frame 2.1, and one end of the adjustment rod 6.2 is connected to the middle of the middle rod of the rear frame 2.1 of the front net 2. The other end of the adjustment rod 6.2 passes through the mesh in the middle of the isolation net 5. The adjustment rod 6.2 is provided with a front stopper and a rear stopper. The isolation net is located between the front stopper and the rear stopper. This solution uses an elastic net plate located in the isolation net, and uses an adjustment rod and front and rear stoppers as the isolation net adjustment member 6. In this way, the front stopper can push the middle of the elastic net plate, causing it to move backward, so that the elastic net plate protrudes backward; the rear stopper can push the middle of the elastic net plate, causing it to move forward, so that the elastic net plate protrudes backward.

[0079] Specific embodiment 3: The rest of the structure of this embodiment refers to specific embodiment 1 or specific embodiment 2, except that:

[0080] like Figure 5 As shown, a net-setting device for eel fry that effectively releases marine garbage also includes a buoyancy frame 9. The buoyancy frame 9 is surrounded by four upper, lower, left, and right frames. The four upper, lower, left, and right frames are all frames with buoyancy greater than gravity. The front port of the front net 2 is located in the buoyancy frame 9. Specifically, the net port frame 2.2 is located in the buoyancy frame 9. In this embodiment, the net port frame 2.2 is also surrounded by four upper, lower, left, and right frames corresponding to the buoyancy frame 9. The front port edge of the front net 2 is connected to the buoyancy frame 9 by a connecting rope. Specifically, the four upper, lower, left, and right frames of the net port frame 2.2 are connected to the four upper, lower, left, and right frames of the buoyancy frame 9 by connecting ropes respectively. There is a gap between the front port edge of the front net 2 and the four upper, lower, left, and right frames of the buoyancy frame 9, and the gap forms a garbage outlet 10.

[0081] In this embodiment, when an eel fry net device that effectively releases marine debris is actually used, the rope 7 used to fix the eel fry net device is connected to the buoyancy frame 9, and the rope 7 is connected to the pile or anchor, thereby fixing an eel fry capturing net at the mouth of a river.

[0082] When the eel fry net setting device is setting the net to catch eel fry, the upper frame of the buoyancy frame 9 will float on the water surface, and the floating garbage on the water surface will flow away through the garbage outlet 10, effectively reducing the floating garbage from entering the net bag of the net; thereby further effectively solving the problem in the existing technology that a large amount of garbage flows into the net and the garbage blocks the bag net, resulting in the vast majority of eel fry being unable to enter the eel fry collector 1 at the end of the net, seriously affecting the eel fry capture yield.

[0083] Specific embodiment 4: The rest of the structure of this embodiment refers to specific embodiment 1 or specific embodiment 2, the difference is that:

[0084] like Figure 6 As shown, a netting device for releasing marine debris effectively includes a buoyancy member 11. The buoyancy member 11 in this embodiment is a buoy, a floating block, or a floating frame. The buoyancy member 11 is connected to the net opening frame 2.2 by a connecting rope.

[0085] In this embodiment, the net opening frame 2.2 connected to the front port of the front net 2 serves as a frame for connecting the rope 7. Specifically, in the actual use of the eel fry net setting device for effectively releasing marine garbage in this embodiment, the rope 7 for fixing the eel fry net setting device is connected to the net opening frame 2.2 of the front port of the front net 2, and the rope 7 is connected to a pile or anchor, thereby fixing an eel fry capturing net at the estuary of a river.

[0086] When the eel fry net device is in the process of setting the net to catch eel fry, the buoyancy member 11 will float on the water surface, and the net mouth frame 2.2 will be suspended below the buoyancy member 11. This can prevent floating garbage on the water surface from entering the net bag of the net on the one hand, and on the other hand, the fishing depth of the net can be adjusted by adjusting the length of the connecting rope.

[0087] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any way. Any simple modification, change and equivalent transformation made to the above embodiment based on the technical essence of the present invention still fall within the scope of protection of the technical solution of the present invention.

Claims

1. An eel fry netting device for effectively releasing marine debris, characterized by: The device comprises an eel fry collector and a spread net with a net bag, wherein the spread net comprises: A front net with openings at both ends, wherein the rear end edge of the front net is connected to the rear frame; The rear net is open at the front end, the front end edge of the rear net is connected to the front frame, an isolation net is arranged inside the front frame, and the eel fry collector is installed at the end of the rear net; A guide is provided on the rear frame, and the front frame moves along the guide; An elastic member, wherein the front frame is pressed against the rear frame under the action of the elastic member, so that the front port of the rear net is docked with the rear port of the front net; An isolation net adjusting piece is connected between the front net and the middle part of the isolation net; When the front frame abuts against the rear frame, the middle portion of the isolation net protrudes backwards; When the front frame moves backward along the guide piece and separates from the rear frame, a garbage discharge port is formed between the front frame and the rear frame; When the front frame moves backward along the guide piece, the middle part of the isolation net will move forward relative to the front frame under the action of the isolation net adjusting piece, and the middle part of the isolation net will protrude forward.

2. The eel fry netting device for effectively releasing marine debris according to claim 1, characterized in that: The isolation net adjusting piece is an adjusting rope, one end of which is connected to the front net, and the other end of which is connected to the middle of the isolation net.

3. The eel fry netting device for effectively releasing marine debris according to claim 1, characterized in that: The isolation net adjusting piece is an adjusting rod, one end of which is connected to the front net, and the other end of which passes through the mesh in the middle of the isolation net. A baffle is provided at the other end of the adjusting rod.

4. The eel fry netting device for effectively releasing marine debris according to claim 1, characterized in that: The isolation net adjustment part is an adjustment rod, and the isolation net is an elastic mesh plate. One end of the adjustment rod is connected to the front net, and the other end of the adjustment rod passes through the mesh in the middle of the isolation net. The adjustment rod is provided with a front stopper and a rear stopper, and the isolation net is located between the front stopper and the rear stopper.

5. The eel fry netting device for effectively releasing marine debris according to claim 1, 2, 3 or 4, characterized in that: The mesh size of the isolation net is larger than the mesh size of the front net, and the mesh size of the isolation net is larger than the mesh size of the rear net.

6. The eel fry netting device for effectively releasing marine debris according to claim 1, 2, 3 or 4, characterized in that: The utility model also includes a buoyancy frame, which is surrounded by four upper, lower, left and right frames. The front port of the front net is located in the buoyancy frame. The edge of the front port of the front net is connected to the buoyancy frame by a connecting rope. There is a gap between the edge of the front port of the front net and the four upper, lower, left and right frames of the buoyancy frame, and the gap forms a garbage outlet.

7. The eel fry netting device for effectively releasing marine debris according to claim 1, 2, 3 or 4, characterized in that: It also includes a buoyancy piece, the front port edge of the front net is connected to the net port frame, and the buoyancy piece and the net port frame are connected by a connecting rope.

8. The eel fry netting device for effectively releasing marine debris according to claim 1, 2, 3 or 4, characterized in that: The guide member is a guide rod, and a sliding sleeve that matches the guide rod is provided on the front frame.

9. The eel fry netting device for effectively releasing marine debris according to claim 1, 2, 3 or 4, characterized in that: The net bag of the rear net gradually decreases from front to back, and the net bag of the front net gradually decreases from front to back.

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