A net for catching eel fry

Abstract

The application discloses a larval eel catching net, aiming to provide a larval eel catching net which can effectively isolate and release garbage into the net, thereby effectively solving the problem that the larval eel catching net in the prior art is blocked by garbage, so that most of the larval eels cannot enter the larval eel collector at the end of the net, and the larval eel catching yield is seriously affected. It comprises the following parts: a net with a net bag; a net mouth frame, wherein the net mouth of the net is fixed on the net mouth frame; a larval eel collector, wherein the larval eel collector is installed at the end of the net bag of the net; and a garbage net inner isolation device, wherein the garbage net inner isolation device comprises a conical isolation net and a sealing net piece, the net mouth edge of the conical isolation net is fixed on the net, one side of the conical isolation net is formed by the net cover of the net, the net cover of the net forming the side of the conical isolation net is provided with a garbage release port, one side edge of the sealing net piece close to the net mouth frame is connected with the net, and the remaining side edges of the sealing net piece are adsorbed on the net through magnetic adsorption pieces.

Description

Technical Field

[0001] The invention relates to the field of eel fry capture, and in particular to a sieve for capturing eel fry. 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 provide an eel fry catching net that can effectively isolate and release garbage that enters the net, 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 eels being unable to enter the eel fry collector at the end of the net, seriously affecting the eel fry capture yield.

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

[0006] A tent net for catching eel fry, comprising:

[0007] Nets with web bags;

[0008] Network port frame, on which the network port of the net is fixed;

[0009] An eel fry collector is installed at the end of the net bag of the net;

[0010] The garbage net isolation device includes a conical isolation net and a blocking mesh. The edge of the conical isolation net's opening is fixed to the net. One side of the conical isolation net is formed by the net's mesh. The mesh forming the side of the conical isolation net is provided with a garbage release port, which is located at the end of the conical isolation net. The blocking mesh is located outside the garbage release port and blocks the garbage release port. One side of the blocking mesh near the opening frame is connected to the net, and the remaining side of the blocking mesh is attached to the net via magnetic elements. In a fry capture net of this solution, during the process of capturing fry, garbage (primarily suspended garbage) entering through the opening of the net will be isolated by the conical isolation net. The fry can then pass through the conical isolation net into the net bag of the net and be collected by the fry collector at the end. Because the conical isolation net is generally conical in shape, the garbage blocked by the conical isolation net will gather at the end of the conical isolation net, and the garbage release port is located at the end of the conical isolation net. A portion of the water flow impact force on the garbage gathered at the end of the conical isolation net will act on the blocking mesh. Therefore, as the amount of garbage gathered at the end of the conical isolation net increases, the water flow impact force on the blocking mesh gradually increases. When the water flow impact force on the blocking mesh is greater than the adsorption force of the magnetic element, the side of the blocking mesh adsorbed on the net by the magnetic element will break away from the net, allowing the garbage gathered at the end of the conical isolation net to be discharged in a timely manner through the garbage release port. Because the side of the blocking mesh near the net port frame is connected to the net, after the garbage gathered at the end of the conical isolation net is discharged, the blocking mesh will reattach to the outer surface of the net under the action of the water flow, causing the remaining side of the blocking mesh to be adsorbed on the net again by the magnetic element. Therefore, the eel fry catching net of the present invention can effectively isolate and promptly release the garbage that enters the net during the process of catching eel fry, thereby effectively solving the problem in the existing technology that the eel fry net is clogged 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.

[0011] Preferably, a buoyancy unit is further included, the buoyancy unit being located above the net mouth frame, the buoyancy unit being connected to the upper frame of the net mouth frame via a connector, and a floating garbage outlet being formed between the buoyancy unit and the upper frame of the net mouth frame. In a process of setting up a net for catching eels, the buoyancy unit floats on the water surface, and the net mouth frame is suspended below the buoyancy unit. In this way, floating garbage on the water surface will flow away through the floating garbage outlet, effectively reducing the amount of floating garbage entering the net bag of the net. This further effectively solves the problem in the prior art of setting up a net for catching eels, in which a large amount of garbage flows into the net, clogging the bag net with garbage, resulting in the vast majority of eels being unable to enter the eel collector at the end of the net, seriously affecting the yield of eel fry.

[0012] Preferably, the conical isolation net includes left and right isolation mesh panels and an upper isolation net connecting the upper edges of the left and right isolation mesh panels. The lower edges of the left and right isolation mesh panels are connected to the net of the net, and the lower side of the conical isolation net is formed by the net of the net. Trash (primarily suspended trash) entering through the net opening of the net is isolated by the conical isolation net, while eel fry can pass through the mesh holes of the left and right isolation mesh panels and the upper isolation net, enter the net bag of the net, and be collected by the eel fry collector at the end.

[0013] Preferably, the buoyancy unit is a floating rod, and the connecting member is a connecting rope or a connecting rod.

[0014] Preferably, the magnetic element includes a first soft magnetic strip and a second soft magnetic strip. The first soft magnetic strip is disposed on the sealing mesh and extends along a side edge of the sealing mesh. The second soft magnetic strip is disposed on the mesh of the net. The first soft magnetic strip and the second soft magnetic strip are attracted to each other. Thus, after the first soft magnetic strip and the second soft magnetic strip are attracted to each other, the sealing mesh can effectively seal the garbage discharge port.

[0015] Preferably, a mesh opening isolation device is also included, which includes a rotating mesh plate and a floating block. The rotating mesh plate is rotatably arranged on the mesh opening frame via a rotating shaft. The rotating shaft is close to the bottom edge of the mesh opening of the net. The rotating mesh plate located above the rotating shaft constitutes a shielding mesh plate for sealing the mesh opening of the net. The floating block is arranged on the shielding mesh plate. The rotating mesh plate located below the rotating shaft constitutes a driving mesh plate. The driving mesh plate is located below the mesh opening of the net, and the area of ​​the driving mesh plate is larger than the area of ​​the shielding mesh plate. The mesh opening isolation device of this solution can be used in conjunction with the isolation device in the garbage net to isolate large particles and larger particles of garbage through the mesh opening isolation device and release them in time, thereby preventing large particles and larger particles from entering the isolation device in the garbage net and blocking the garbage release port, which causes the garbage accumulated in the isolation device in the garbage net to be unable to be released. Specifically,

[0016] In a process of setting up a net for catching eel fry, the rotating net plate, under the action of the floating block, causes the shielding net plate in the rotating net plate to rotate upward and cooperates with the water flow to seal the net opening of the net. The driving net plate is located below the net opening of the net. At this time, the rotating net plate is in a working state. In this state, the rotating net plate is roughly distributed vertically. Since the shielding net plate blocks the net opening of the net, large particles and relatively large particles of garbage will be isolated by the shielding net plate (eel fry and small and medium-sized particles of garbage can enter the net through the mesh of the shielding net plate). At the same time, garbage will also accumulate on the driving net plate in this process. As the amount of garbage accumulated on the shielding net plate and the driving net plate increases, the water flow force on the shielding net plate and the driving net plate will gradually increase. Since the area of ​​the driving mesh is larger than that of the shielding mesh, the force of the water flow acting on the driving mesh will gradually become greater than the force of the water flow acting on the shielding mesh during this process. When the force of the water flow acting on the driving mesh is greater than the force of the water flow acting on the shielding mesh and the force of the floating block, the driving mesh will rotate backwards so that the rotating mesh is tilted as a whole. At this time, the rotating mesh is in a released state. In this state, large particles and relatively large particles of garbage accumulated on the rotating mesh will be washed away by the water flow, and the garbage accumulated on the rotating mesh will be released in time. After the garbage accumulated on the rotating mesh is released, the rotating mesh will again rotate upward under the action of the floating block and cooperate with the water flow to seal the net opening of the net. The driving mesh is located below the net opening of the net, and the rotating mesh resumes its working state.

[0017] Preferably, the net opening frame includes a front frame, a rear frame, and side connecting rods connecting the front and rear frames. The net opening of the net is connected to the rear frame, and the rotating net plate is close to the rear frame. In this way, the rope used to secure the eel fry capture net can be connected to the front frame to prevent the rotating net plate from interfering with the rope used to secure the eel fry capture net during rotation.

[0018] Preferably, side mesh panels are provided on the left and right sides of the front and rear frames, and the rotating mesh panel is located between the side mesh panels on the left and right sides of the front and rear frames. This helps to divert water flow near the opening of the net, facilitating the eel fry to enter the net through the opening.

[0019] Preferably, the mesh size of the rotating screen is larger than the mesh size of the conical isolation screen.

[0020] As preferably, the net bag of the net is gradually reduced by the net mouth of the net. Like this, the eel fry that helps to enter the net bag of the net gathers in the eel fry collector at the end of the net and collects.

[0021] The beneficial effect of the present application is that it can effectively isolate and release the garbage into the net, thereby effectively solving the problem that the eel fry net is blocked by garbage, resulting in that most of the eel fry cannot enter the eel fry collector at the end of the net, which seriously affects the eel fry capture yield. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a three-dimensional structure schematic diagram of an eel fry capture net according to the first embodiment of the present application.

[0023] Figure 2 is Figure 1 is a partial bottom view of an eel fry capture net according to the present application.

[0024] Figure 3 is a three-dimensional structure schematic diagram of an eel fry capture net according to the third embodiment of the present application.

[0025] Figure 4 is a partial side view of an eel fry capture net according to the third embodiment of the present application.

[0026] Figure 5 is a structure schematic diagram of a rotating net plate of an eel fry capture net according to the third embodiment of the present application.

[0027] in the figure:

[0028] net 1;

[0029] net opening frame 2, front frame 2.1, rear frame 2.2, side connecting rod 2.3, side net plate 2.4;

[0030] eel fry collector 3;

[0031] garbage net isolation device 4, conical isolation net 4.1, side isolation net sheet 4.1.1, upper isolation net 4.1.2, garbage release port 4.2, blocking net sheet 4.3, magnetic attraction piece 4.4;

[0032] buoyancy unit 5;

[0033] rope 6;

[0034] net opening isolation device 7, rotating net plate 7.1, blocking net plate 7.1.1, driving net plate 7.1.2, rotating shaft 7.2, floating block 7.3. DETAILED DESCRIPTION

[0035] The present application will be further described in detail below in combination with the drawings and specific embodiments:

[0036] The first embodiment is as follows: Figure 1 , Figure 2As shown, a fry eel catching net includes a net 1 with a net bag, a net opening frame 2, an eel fry collector 3, and a garbage net isolation device 4. The net opening of the net 1 is fixed to the net opening frame 2. The eel fry collector 3 is installed at the end of the net bag of the net 1.

[0037] The garbage net internal isolation device 4 includes a conical isolation net 4.1 and a blocking mesh 4.3. The conical isolation net 4.1 is located within the net bag of the net 1. The cross-sectional area of ​​the conical isolation net 4.1 gradually decreases from the net opening of the conical isolation net 4.1 toward the rear. The edge of the net opening of the conical isolation net 4.1 is fixed to the net 1. One side of the conical isolation net 4.1 is formed by the mesh of the net 1. The mesh of the net 1 forming the side of the conical isolation net 4.1 is provided with a garbage release port 4.2. The garbage release port 4.2 is located at the end of the conical isolation net 4.1. The blocking mesh 4.3 is located outside the garbage release port 4.2 and blocks the garbage release port 4.2. One side of the blocking mesh 4.3 near the mesh opening frame 2 is connected to the net 1. In this embodiment, the front side of the blocking mesh 4.3 near the mesh opening frame 2 is connected to the mesh of the net 1 by bonding or sewing. The remaining side edges of the covering mesh 4.3 are adsorbed on the net 1 by means of magnetic elements 4.4 (the remaining side edges of the covering mesh refer to the remaining side edges of the covering mesh except the front side edge).

[0038] When the eel fry catching net of this embodiment is actually used, the rope 6 for fixing the eel fry catching net is connected to the net mouth frame 2, and the rope 6 is connected to the pile or anchor, so that the eel fry catching net is fixed at the river estuary.

[0039] In the process of catching eel fry by setting up a net for catching eel fry in this embodiment,

[0040] The garbage (mainly suspended garbage) entering through the net opening of the net 1 will be isolated by the conical isolation net 4.1, and the eel fry can enter the net bag of the net 1 through the conical isolation net 4.1 and be collected by the eel fry collector 3 at the end. Since the conical isolation net 4.1 is conical as a whole, the garbage blocked by the conical isolation net 4.1 will gather at the end of the conical isolation net 4.1, and the garbage release port 4.2 is located at the end of the conical isolation net 4.1. Part of the water flow impact force on the garbage gathered at the end of the conical isolation net 4.1 will act on the blocking mesh 4.3. Therefore, as the garbage gathered at the end of the conical isolation net 4.1 increases, the water flow impact force on the blocking mesh 4.3 gradually increases. When the water flow impact force on the blocking mesh 4.3 is greater than the adsorption force of the magnetic element 4.4, the side of the blocking mesh 4.3 adsorbed on the net 1 by the magnetic element 4.4 will detach from the net 1, so that the garbage gathered at the end of the conical isolation net 4.1 can be discharged in time through the garbage release port 4.2. Because one side of the blocking mesh 4.3 near the mesh opening frame 2 is connected to the net 1, after the garbage collected at the end of the conical isolation net 4.1 is discharged, the blocking mesh 4.3 will be reattached to the outer surface of the net 1 under the action of the water flow, so that the remaining side edges of the blocking mesh 4.3 are once again attracted to the net 1 via the magnetic element 4.4. Therefore, the eel fry capture net of this embodiment can effectively isolate and promptly release garbage that has entered the net 1 during the process of catching eels. This effectively solves the problem of existing eel fry nets that, due to garbage clogging the sac net, prevent most eels from entering the eel fry collector 3 at the end of the net 1, seriously affecting the eel fry capture yield.

[0041] Specific embodiment 2, as Figure 1 、 Figure 2 As shown, a fry eel trapping net comprises a net 1 with a net bag, a net opening frame 2, an eel collector 3, and a garbage net isolation device 4. The net opening of the net 1 is fixed to the net opening frame 2. The eel collector 3 is mounted at the end of the net bag of the net 1. The eel collector 3 includes a collection bucket. The specific structure of the eel collector 3 is prior art and is not the subject of the present invention. Therefore, this application does not elaborate on the specific structure and working method of the eel collector 3, as well as other conventional technical means.

[0042] The garbage net internal isolation device 4 includes a conical isolation net 4.1 and a blocking mesh 4.3. The conical isolation net 4.1 is located within the net of the net 1. The cross-sectional area of ​​the net of the conical isolation net 4.1 gradually decreases from the opening of the conical isolation net 4.1 toward the rear. The edge of the opening of the conical isolation net 4.1 is fixed to the net 1. In this embodiment, the edge of the opening of the conical isolation net 4.1 is fixed to the edge of the opening of the net 1. Of course, it should be noted that the edge of the opening of the conical isolation net 4.1 can also be fixedly connected to the inner wall of the front or middle portion of the net 1.

[0043] One side of the conical isolation net 4.1 is formed by the mesh of the net 1. The mesh of the net 1 forming the side of the conical isolation net 4.1 is provided with a garbage release port 4.2. The garbage release port 4.2 is located at the end of the conical isolation net 4.1. A blocking mesh 4.3 is located outside the garbage release port 4.2 and blocks the garbage release port 4.2. One side of the blocking mesh 4.3, near the mesh opening frame 2, is connected to the net 1. In this embodiment, the front side of the blocking mesh 4.3, near the mesh opening frame 2, is connected to the mesh of the net 1 by bonding or sewing. The remaining side edges of the blocking mesh 4.3 are attached to the net 1 by magnetic elements 4.4 (the remaining side edges of the blocking mesh 4.3 refer to the remaining side edges of the blocking mesh 4.3 excluding the front side edge).

[0044] When the eel fry catching net of this embodiment is actually used, the rope 6 for fixing the eel fry catching net is connected to the net mouth frame 2, and the rope 6 is connected to the pile or anchor, so that the eel fry catching net is fixed at the river estuary.

[0045] In the process of catching eel fry in the eel fry catching net of this embodiment, garbage (mainly suspended garbage) entering from the net mouth of the net 1 will be isolated by the conical isolation net 4.1, and the eel fry can enter the net bag of the net 1 through the conical isolation net 4.1 and be collected by the eel fry collector 3 at the end. Since the conical isolation net 4.1 is conical as a whole, the garbage blocked by the conical isolation net 4.1 will gather at the end of the conical isolation net 4.1, and the garbage release port 4.2 is located at the end of the conical isolation net 4.1. Part of the water flow impact force on the garbage gathered at the end of the conical isolation net 4.1 will act on the blocking mesh 4.3. Therefore, as the garbage gathered at the end of the conical isolation net 4.1 increases, the water flow impact force on the blocking mesh 4.3 gradually increases. When the water flow impact force on the blocking mesh 4.3 is greater than the adsorption force of the magnetic element 4.4, the side of the blocking mesh 4.3 adsorbed on the net 1 by the magnetic element 4.4 will detach from the net 1, so that the garbage gathered at the end of the conical isolation net 4.1 can be discharged in time through the garbage release port 4.2. Because one side of the blocking mesh 4.3 near the mesh opening frame 2 is connected to the net 1, after the garbage collected at the end of the conical isolation net 4.1 is discharged, the blocking mesh 4.3 will be reattached to the outer surface of the net 1 under the action of the water flow, so that the remaining side edges of the blocking mesh 4.3 are once again attracted to the net 1 via the magnetic element 4.4. Therefore, the eel fry capture net of this embodiment can effectively isolate and promptly release garbage that has entered the net 1 during the process of catching eels. This effectively solves the problem of existing eel fry nets that, due to garbage clogging the sac net, prevent most eels from entering the eel fry collector 3 at the end of the net 1, seriously affecting the eel fry capture yield.

[0046] In this embodiment, the network port frame 2 is rectangular. Of course, it should be noted that the network port frame 2 can also be circular, square, or other shapes.

[0047] Further, such as Figure 1 As shown, a net for capturing eel fry also includes a buoyancy unit 5. The buoyancy unit 5 is located above the net mouth frame 2. The buoyancy unit 5 is connected to the upper frame of the net mouth frame 2 through a connector. A floating garbage outlet is formed between the buoyancy unit 5 and the upper frame of the net mouth frame 2. In the process of setting up a net for capturing eel fry, the buoyancy unit 5 floats on the water surface, and the net mouth frame 2 is suspended below the buoyancy unit 5. In this way, floating garbage floating on the water surface will flow away through the floating garbage outlet, effectively reducing the amount of floating garbage entering the net bag of the net 1; thereby further effectively solving the problem in the prior art of setting up a net for capturing eel fry, in which a large amount of garbage flows into the net 1, and the garbage blocks the bag net, resulting in the vast majority of eel fry being unable to enter the eel fry collector 3 at the end of the net 1, seriously affecting the eel fry capture yield.

[0048] In this embodiment, the buoyancy unit 5 is a floating rod, and the connecting member is a connecting rope or a connecting rod. Of course, it needs to be said that the buoyancy unit 5 can also be a floating block 7.3 or a buoy or a floating ball or a floating frame.

[0049] Further, such as Figure 1 As shown, the net bag of the net 1 gradually decreases from the net mouth of the net 1 to the back. In this way, the eel fry that are conducive to entering the net bag of the net 1 are gathered into the eel fry collector 3 at the end of the net 1 for collection.

[0050] Further, such as Figure 1 As shown, the conical isolation net 4.1 includes left and right isolation mesh sheets 4.1.1 and an upper isolation net 4.1.2 connecting the upper edges of the left and right isolation mesh sheets 4.1.1. The lower edges of the left and right isolation mesh sheets 4.1.1 are connected to the mesh of the net 1. In this embodiment, the lower side of the conical isolation net 4.1 is formed by the mesh of the net 1. The mesh size of the left and right isolation mesh sheets 4.1.1 and the upper isolation net 4.1.2 is larger than the mesh size of the mesh of the net 1. Trash (primarily suspended trash) entering through the opening of the net 1 will be isolated by the conical isolation net 4.1. Eel fry can pass through the mesh of the left and right isolation mesh sheets 4.1.1 and the upper isolation net 4.1.2 of the conical isolation net 4.1, enter the net bag of the net 1, and be collected by the eel fry collector 3 at the end.

[0051] Further, such as Figure 1 、 Figure 2As shown, magnetic element 4.4 includes a first soft magnetic strip and a second soft magnetic strip. The first soft magnetic strip is disposed on sealing mesh 4.3 and extends along the side of sealing mesh 4.3. The second soft magnetic strip is disposed on the netting of net 1. The first and second soft magnetic strips are attracted to each other. Thus, after the first and second soft magnetic strips are attracted to each other, sealing mesh 4.3 can effectively seal garbage discharge port 4.2.

[0052] Specific embodiment three, as Figure 3 、 Figure 4 、 Figure 5 As shown, a fry eel trapping net comprises a net 1 with a net bag, a net opening frame 2, an eel collector 3, a garbage net internal isolation device 4, and a net opening isolation device 7. The net opening of the net 1 is fixed to the net opening frame 2. The eel collector 3 is mounted at the end of the net bag of the net 1. The eel collector 3 includes a collection bucket. The specific structure of the eel collector 3 is prior art and is not the subject of the present invention. Therefore, this application does not elaborate on the specific structure and working method of the eel collector 3, as well as other conventional technical means.

[0053] The garbage net internal isolation device 4 includes a conical isolation net 4.1 and a blocking mesh 4.3. The conical isolation net 4.1 is located within the net of the net 1. The cross-sectional area of ​​the net of the conical isolation net 4.1 gradually decreases from the opening of the conical isolation net 4.1 toward the rear. The edge of the opening of the conical isolation net 4.1 is fixed to the net 1. In this embodiment, the edge of the opening of the conical isolation net 4.1 is fixed to the edge of the opening of the net 1. Of course, it should be noted that the edge of the opening of the conical isolation net 4.1 can also be fixedly connected to the inner wall of the front or middle portion of the net 1. One side of the conical isolation net 4.1 is composed of the mesh of the net 1. Specifically, the conical isolation net 4.1 includes left and right isolation mesh sheets 4.1.1 and an upper isolation net 4.1.2 connecting the upper edges of the left and right isolation mesh sheets 4.1.1. The lower edges of the left and right isolation mesh sheets 4.1.1 are connected to the mesh of the net 1. In this embodiment, the lower side of the conical isolation net 4.1 is composed of the mesh of the net 1.

[0054] The net 1, which forms the side of the conical isolation net 4.1, is provided with a trash release port 4.2 (i.e., the lower side of the conical isolation net 4.1 is provided with the trash release port 4.2). The trash release port 4.2 is located at the end of the conical isolation net 4.1. A blocking mesh 4.3 is located outside the trash release port 4.2 and blocks the trash release port 4.2. One side of the blocking mesh 4.3, which is adjacent to the net opening frame 2, is connected to the net 1. In this embodiment, the front side of the blocking mesh 4.3, which is adjacent to the net opening frame 2, is connected to the net 1 by bonding or sewing. The remaining side edges of the blocking mesh 4.3 are attached to the net 1 via magnetic elements 4.4 (the remaining side edges of the blocking mesh 4.3 are those other than the front side edge).

[0055] The net mouth isolation device 7 comprises a rotating net plate 7.1 and a floating block 7.3. The rotating net plate 7.1 is arranged on the net mouth frame 2 through a rotating shaft 7.2. The rotating shaft 7.2 is close to the bottom edge of the net mouth of the net 1. The rotating net plate 7.1 above the rotating shaft 7.2 constitutes a shielding net plate 7.1.1 which shields the net mouth of the net 1. The floating block 7.3 is arranged on the shielding net plate 7.1.1, and in this embodiment, the floating block 7.3 is located at the upper part of the shielding net plate 7.1.1. The rotating net plate 7.1 below the rotating shaft 7.2 constitutes a driving net plate 7.1.2. The driving net plate 7.1.2 is located below the net mouth of the net 1, and the area of the driving net plate 7.1.2 is greater than the area of the shielding net plate 7.1.1. In this embodiment, the area of the driving net plate 7.1.2 is 1.5-2 times the area of the shielding net plate 7.1.1.

[0056] In this embodiment, the rotating net plate 7.1 comprises a working state and a release state. When the rotating net plate 7.1 is in the working state, the rotating net plate 7.1 is vertically distributed, and the shielding net plate 7.1.1 shields the net mouth of the net 1. When the rotating net plate 7.1 is in the release state, the rotating net plate 7.1 is inclinedly distributed, and the driving net plate 7.1.2 is inclined to the direction of the end of the net 1.

[0057] In actual use, the rope 6 for fixing the eel fry catching seine of this embodiment is connected to the net mouth frame 2, and the rope 6 is connected to a stake or an anchor, so as to fix the eel fry catching seine at the estuary of a river.

[0058] In the process of catching eel fry by the eel fry catching seine of this embodiment,

[0059] The net mouth isolation device 7 can be used in cooperation with the garbage net inner isolation device 4 to isolate and timely release the garbage with large and relatively large particles through the net mouth isolation device 7, so as to avoid the problem that the garbage with large and relatively large particles enters the garbage net inner isolation device 4 to block the garbage release port 4.2, and the garbage accumulated in the garbage net inner isolation device 4 cannot be released. Specifically,

[0060] In the process of setting up a net to capture eel fry, the rotating net plate 7.1, under the action of the floating block 7.3, causes the shielding net plate 7.1.1 in the rotating net plate 7.1 to rotate upward and cooperate with the water flow to block the net opening of the net 1. The driving net plate 7.1.2 is vertically distributed (i.e., roughly vertically distributed) on the net 1. Since the shielding net plate 7.1.1 blocks the net opening of the net 1, large particles and relatively large particles of garbage will be isolated by the shielding net plate 7.1.1 (eel fry and small and medium-sized particles of garbage can enter the net 1 through the mesh of the shielding net plate 7.1.1). At the same time, garbage will also accumulate on the driving net plate 7.1.2 in this process. As the amount of garbage accumulated on the shielding net plate 7.1.1 and the driving net plate 7.1.2 increases, the water flow force acting on the shielding net plate 7.1.1 and the driving net plate 7.1.2 will gradually increase. Since the area of ​​the driving mesh plate 7.1.2 is larger than the area of ​​the shielding mesh plate 7.1.1, the water flow force acting on the driving mesh plate 7.1.2 will gradually become greater than the water flow force acting on the shielding mesh plate 7.1.1 during this process. When the water flow force acting on the driving mesh plate 7.1.2 is greater than the water flow force acting on the shielding mesh plate 7.1.1 and the force of the floating block 7.3, the driving mesh plate 7.1.2 will rotate backward so that the rotating mesh plate 7.1 is tilted as a whole. At this time, the rotating mesh plate 7.1 is in a released state. In this state, the large particles and larger particles of garbage accumulated on the rotating mesh plate 7.1 will be washed away by the water flow, and the garbage accumulated on the rotating mesh plate 7.1 will be released in time. When the garbage accumulated on the rotating screen 7.1 is released, the rotating screen 7.1 is again acted upon by the floating block 7.3, so that the shielding screen 7.1.1 in the rotating screen 7.1 rotates upward and cooperates with the water flow to cover the net opening of the net 1, and the driving screen 7.1.2 is located below the net opening of the net 1, thereby restoring the rotating screen 7.1 to its working state.

[0061] The garbage entering the net 1 through the shielding mesh 7.1.1 will be isolated by the conical isolation net 4.1, and the eel fry can enter the net bag of the net 1 through the conical isolation net 4.1 and be collected by the eel fry collector 3 at the end. Since the conical isolation net 4.1 is conical as a whole, the garbage blocked by the conical isolation net 4.1 will gather at the end of the conical isolation net 4.1, and the garbage release port 4.2 is located at the end of the conical isolation net 4.1. Part of the water flow impact force on the garbage gathered at the end of the conical isolation net 4.1 will act on the blocking mesh 4.3. Therefore, as the garbage gathered at the end of the conical isolation net 4.1 increases, the water flow impact force on the blocking mesh 4.3 gradually increases. When the water flow impact force on the blocking mesh 4.3 is greater than the adsorption force of the magnetic element 4.4, the side of the blocking mesh 4.3 adsorbed on the net 1 by the magnetic element 4.4 will detach from the net 1, so that the garbage gathered at the end of the conical isolation net 4.1 can be discharged in time through the garbage release port 4.2. Because one side of the blocking mesh 4.3 near the mesh opening frame 2 is connected to the net 1, after the garbage collected at the end of the conical isolation net 4.1 is discharged, the blocking mesh 4.3 will be reattached to the outer surface of the net 1 under the action of the water flow, so that the remaining side edges of the blocking mesh 4.3 are once again attracted to the net 1 via the magnetic element 4.4. Therefore, the eel fry capture net of this embodiment can effectively isolate and promptly release garbage that has entered the net 1 during the process of catching eels. This effectively solves the problem of existing eel fry nets that, due to garbage clogging the sac net, prevent most eels from entering the eel fry collector 3 at the end of the net 1, seriously affecting the eel fry capture yield.

[0062] Further, such as Figure 3 、 Figure 4 As shown, a net for capturing eel fry also includes a buoyancy unit 5. The buoyancy unit 5 is located above the net mouth frame 2. The buoyancy unit 5 is connected to the upper frame of the net mouth frame 2 through a connector. A floating garbage outlet is formed between the buoyancy unit 5 and the upper frame of the net mouth frame 2. In the process of setting up a net for capturing eel fry, the buoyancy unit 5 floats on the water surface, and the net mouth frame 2 is suspended below the buoyancy unit 5. In this way, floating garbage floating on the water surface will flow away through the floating garbage outlet, effectively reducing the amount of floating garbage entering the net bag of the net 1; thereby further effectively solving the problem in the prior art of setting up a net for capturing eel fry, in which a large amount of garbage flows into the net 1, and the garbage blocks the bag net, resulting in the vast majority of eel fry being unable to enter the eel fry collector 3 at the end of the net 1, seriously affecting the eel fry capture yield.

[0063] In this embodiment, the buoyancy unit 5 is a floating rod, and the floating rod is displaced by one or more rods. The connecting member is a connecting rope or a connecting rod. Of course, it should be noted that the buoyancy unit 5 can also be a floating block 7.3 or a buoy or a floating ball or a floating frame.

[0064] In this embodiment, the net opening frame 2 includes a front frame 2.1, a rear frame 2.2, and a side connecting rod 2.3 connecting the front frame 2.1 and the rear frame 2.2. The front frame 2.1 and the rear frame 2.2 are rectangular. The side connecting rods 2.3 are located at the four vertices of the front frame 2.1 and the rear frame 2.2. The net opening of the net 1 is connected to the rear frame 2.2. The rotating net plate 7.1 is close to the rear frame 2.2. In this embodiment, when a fry eel catching net is actually used, the rope 6 for fixing the fry eel catching net is connected to the front frame 2.1, and the rope 6 is connected to a pile or anchor, thereby fixing the fry eel catching net at the estuary of a river. In this way, it is possible to avoid interference between the rotating net plate 7.1 and the rope during rotation.

[0065] Further, such as Figure 3 、 Figure 4 As shown, side mesh panels 2.4 are provided on the left and right sides of the front frame 2.1 and the rear frame 2.2. Rotating mesh panels 7.1 are located between the side mesh panels 2.4 on the left and right sides of the front frame 2.1 and the rear frame 2.2. This facilitates the diversion of water flow near the opening of the net 1, facilitating the entry of eels into the net 1 through the opening.

[0066] Further, such as Figure 3 As shown, the net bag of the net 1 gradually decreases from the net mouth of the net 1 to the back. In this way, the eel fry that are conducive to entering the net bag of the net 1 are gathered into the eel fry collector 3 at the end of the net 1 for collection.

[0067] Furthermore, the mesh size of the left and right isolation meshes 4.1.1 and the upper isolation net 4.1.2 is larger than the mesh size of the net of the net 1. Trash (primarily suspended trash) entering through the opening of the net 1 is isolated by the conical isolation net 4.1, while eel fry can pass through the mesh of the left and right isolation meshes 4.1.1 and the upper isolation net 4.1.2 of the conical isolation net 4.1, enter the net of the net 1, and be collected by the eel fry collector 3 at the end.

[0068] The mesh size of the rotating screen plate 7.1 is larger than the mesh size of the conical isolation net 4.1. Specifically, the mesh size of the rotating screen plate 7.1 is larger than the mesh size of the left and right isolation nets 4.1.1, and the mesh size of the rotating screen plate 7.1 is larger than the mesh size of the upper isolation net 4.1.2.

[0069] Further, such as Figure 2 As shown, magnetic element 4.4 includes a first soft magnetic strip and a second soft magnetic strip. The first soft magnetic strip is disposed on sealing mesh 4.3 and extends along the side of sealing mesh 4.3. The second soft magnetic strip is disposed on the netting of net 1. The first and second soft magnetic strips are attracted to each other. Thus, after the first and second soft magnetic strips are attracted to each other, sealing mesh 4.3 can effectively seal garbage discharge port 4.2.

[0070] 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. A net for catching eel fry, characterized in that: include: Nets with web bags; Network port frame, on which the network port of the net is fixed; The eel fry collector is installed at the end of the net bag; The garbage net internal isolation device includes a conical isolation net and a blocking mesh. The edge of the mesh opening of the conical isolation net is fixed to the net. One side of the conical isolation net is formed by the mesh of the net. The mesh forming the side of the conical isolation net is provided with a garbage release port. The garbage release port is located at the end of the conical isolation net. The blocking mesh is located outside the garbage release port and blocks the garbage release port. One side of the blocking mesh near the mesh opening frame is connected to the net. The remaining side edges of the blocking mesh are adsorbed on the net by magnetic elements. The net opening isolation device includes a rotating net plate and a floating block. The rotating net plate is rotatably arranged on the net opening frame via a rotating shaft. The rotating shaft is close to the bottom edge of the net opening of the net. The rotating net plate located above the rotating shaft constitutes a shielding net plate for sealing the net opening of the net. The floating block is arranged on the shielding net plate. The rotating net plate located below the rotating shaft constitutes a driving net plate. The driving net plate is located below the net opening of the net, and the area of ​​the driving net plate is larger than that of the shielding net plate.

2. The eel fry catching net according to claim 1, characterized in that: It also includes a buoyancy unit, which is located above the net port frame. The buoyancy unit is connected to the upper frame of the net port frame through a connecting piece, and a floating garbage passage is formed between the buoyancy unit and the upper frame of the net port frame.

3. The eel fry catching net according to claim 2, characterized in that: The buoyancy unit is a floating rod, and the connecting member is a connecting rope or a connecting rod.

4. A fry eel catching net according to claim 1, 2 or 3, characterized in that: The conical isolation net includes left and right isolation nets and an upper isolation net connecting the upper edges of the left and right isolation nets. The lower edges of the left and right isolation nets are connected to the net of the net, and the lower side of the conical isolation net is composed of the net of the net.

5. A fry eel catching net according to claim 1, 2 or 3, characterized in that: The magnetic attraction component includes a first soft magnetic strip and a second soft magnetic strip. The first soft magnetic strip is arranged on the sealing mesh and extends along the side of the sealing mesh. The second soft magnetic strip is arranged on the mesh of the net. The first soft magnetic strip and the second soft magnetic strip are attracted to each other.

6. A fry eel catching net according to claim 1, 2 or 3, characterized in that: The net port frame comprises a front frame, a rear frame and a side connecting rod connecting the front frame and the rear frame. The net port of the net is connected to the rear frame, and the net plate is rotated to approach the rear frame.

7. The eel fry catching net according to claim 6, characterized in that: Side mesh plates are provided on the left and right sides of the front frame and the rear frame, and the rotating mesh plate is located between the side mesh plates on the left and right sides of the front frame and the rear frame.

8. A fry eel catching net according to claim 1, 2 or 3, characterized in that: The mesh size of the rotating screen is larger than the mesh size of the conical isolation screen.

9. A fry eel catching net according to claim 1, 2 or 3, characterized in that: The net bag of the net gradually decreases from the net opening to the rear.

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