Fish screening device for aquaculture

Abstract

The utility model discloses a fish screening device for aquaculture, which belongs to the technical field of fish screening and comprises a screening box, the front end of the screening box is movably connected with a first sealing door plate and a second sealing door plate which are symmetrically distributed up and down, and a drainage pipe is embedded in the bottom side of the side end of the screening box. Two symmetrically-distributed supports are fixedly connected between the inner walls of the top side of the screening box, hanging lugs are fixedly connected to the lower ends of the supports, a partition plate is fixedly connected between the inner walls of the screening box and located between the upper portion and the lower portion of the first sealing door plate and the upper portion of the second sealing door plate, and a plurality of evenly-distributed through holes are formed in the upper end of the partition plate. In the fish screening process, fish schools only need to be thrown into the screening box, the fishes can be automatically classified according to sizes and categories, no extra human assistance is needed, people only need to drain water and collect the screened fishes subsequently, the fish school screening efficiency of the people is greatly improved, and meanwhile the labor burden is relieved.

Description

Technical Field

[0001] The utility model relates to the technical field of fish screening, and more specifically, to a fish screening device for aquaculture. Background Art

[0002] In fishery production and scientific research practice, there is a need to screen fish populations of a certain size. For example, separating fry and cultured individuals of different sizes of fish into different ponds, selling them in batches, and conducting nutrition, treatment, or behavioral experiments on fish all require screening some fish of similar sizes.

[0003] However, in the current existing usage process, most people screen fish in aquaculture ponds by using a net bag to catch fish one by one, and then classify fish of different sizes by manual picking, so as to classify the fish into secondary ponds for different cultured individuals. In this process, it is not only inconvenient to catch fish, but also the efficiency of manual screening is slow, and a large amount of labor may be required. Therefore, this solution proposes a fish screening device for aquaculture. Summary of the Utility Model

[0004] 1. Technical problems to be solved:

[0005] Aiming at the problems existing in the prior art, the purpose of the utility model is to provide a fish screening device for aquaculture. During the fish screening process, only need to put the fish group into the screening box, and the fish can automatically classify into different size categories without additional manual assistance. Personnel only need to drain water and collect the screened fish later, which greatly improves the screening efficiency of personnel for the fish group and also reduces the labor burden.

[0006] 2. Technical solutions:

[0007] To solve the above problems, the utility model adopts the following technical solutions.

[0008] A fish screening device for aquaculture includes a screening box. Two symmetrically distributed sealing door panels I and II are movably connected to the front end of the screening box. A drain pipe is embedded at the bottom side of the side end of the screening box. Two symmetrically distributed brackets are fixedly connected between the inner top walls of the screening box. The lower end of the bracket is fixedly connected with a hanging ear. A partition plate is fixedly connected between the inner walls of the screening box. The partition plate is located between the upper and lower sealing door panels I and II and is provided with a plurality of uniformly distributed through holes at the upper end. A collection frame is arranged at the upper end of the partition plate. A collection net cover is arranged at the inner bottom end of the screening box. Three groups of rectangular holes corresponding to the through holes are arranged at the upper end of the collection frame. A blocking member is installed between the inner walls of the collection frame where the rectangular holes are arranged.

[0009] A further improvement lies in that: the plugging member includes two groups of sliding grooves formed on the left and right side walls of the collection frame. The sliding grooves are located at the central ends between the pairwise arranged rectangular holes. A connecting rod is movably connected between the inner walls of the front and rear sliding grooves. The outer ends of the connecting rod are respectively rotatably connected with a first filter plate and a second filter plate. The diameter of the second filter plate is set to be half of that of the first filter plate.

[0010] A further improvement lies in that: both bottom ends of the first filter plate and the second filter plate are movably connected with balls.

[0011] A further improvement lies in that: the upper end of the connecting rod is fixedly connected with a towing rope, and the outer end of the towing rope is fixedly connected with a hook.

[0012] A further improvement lies in that: two groups of automatically reboundable limiting plates are installed at the bottom end of the partition plate. The limiting plates are located between the inner walls of the pairwise arranged through holes.

[0013] 3. Beneficial effects:

[0014] Adopting the technical solution provided by the present utility model, compared with the prior art, it has the following beneficial effects:

[0015] The present utility model is reasonably designed. Firstly, the collection net cover can be placed at the inner bottom of the screening box, the collection frame is placed above the partition plate, and the plugging member is pulled up and the hook is above the hanging ear, so that it is perpendicular to the bottom of the collection frame. At this time, the screening holes at the bottom of the collection frame are in an open state. Then, personnel can scatter some fish food inside the collection net cover, and inject water into the screening box, and put the required fish groups from the top side of the screening box;

[0016] After the fish groups are put in, according to the habit of the fish groups to swim deeper and the phenomenon that the fish groups swim towards the bottom more after the personnel put bait inside the collection net cover. During this period, after the plugging member is pulled up, its rectangular holes are communicated with the through holes, so that small-sized fish can pass through the through holes and enter below the partition plate, while large-sized fish are restricted by the aperture of the through holes and cannot penetrate into the lower part. In this way, the automatic classification of fish of different sizes can be carried out, without the need for personnel to manually select, reducing the work intensity of personnel, and at the same time, the screening efficiency of fish can be further improved;

[0017] Finally, after a certain period of time, when fish schools of different sizes are classified under the blocking effect of the partition board, the operator then removes the blocking piece hanging above the hanging ear, causing the blocking piece to slowly fall, pushing the large-sized fish placed above the partition board. Subsequently, the two blocking pieces are laid flat relative to each other at the bottom side of the collection box, thus blocking the through holes, preventing the fish school from passing through vertically. At the same time, during the subsequent drainage process by the operator, some fish are less likely to get trapped inside the through holes and get injured. Also, after the water body is drained, small-sized fish remain inside the collection net cover, and large-sized fish remain in the collection box, making it more convenient for the subsequent operator to collect the screened fish school.

[0018] Therefore, during the screening process of fish, the operator only needs to put the fish school into the screening box, and the fish can automatically be classified by size without additional manual assistance. The operator only needs to drain the water and collect the screened fish subsequently, greatly improving the screening efficiency of the fish school by the operator and reducing the labor burden at the same time.

[0019] It should be noted that the structures not introduced in the present utility model are the same as the prior art or can be implemented using the prior art because they do not involve the design key points and improvement directions of the present utility model, and will not be elaborated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural diagram of the whole of the present utility model;

[0021] Figure 2 is a schematic sectional structural diagram of the present utility model;

[0022] Figure 3 is a schematic structural diagram of the present utility model during automatic fish screening;

[0023] Figure 4 is a schematic structural diagram of the blocking piece of the present utility model.

[0024] Description of the reference numerals in the drawings:

[0025] 1, screening box; 2, first sealing door panel; 3, second sealing door panel; 4, drain pipe; 5, support; 51, hanging ear; 6, partition board; 7, through hole; 8, collection box; 9, collection net cover; 10, rectangular hole;

[0026] 11, blocking piece; 111, chute; 112, connecting rod; 113, first filter plate; 114, second filter plate; 115, ball; 116, towing rope; 117, hook;

[0027] 12, limiting plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] For ease of understanding the present utility model, the present utility model will be described more comprehensively below with reference to the relevant accompanying drawings. Several embodiments of the present utility model are shown in the drawings. However, the present utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the disclosure of the present utility model more thorough and comprehensive.

[0029] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "page", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0030] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, the meaning of "a plurality" is two or more unless otherwise specifically defined.

[0031] In the present utility model, unless otherwise clearly specified and defined, the terms "installed", "connected", "connected to", "fixed", "provided with", "provided in", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. Embodiment

[0032] Please refer to Figures 1-4, A fish screening device for aquaculture, including a screening box 1. At the front end of the screening box 1, two sealing door panels 1 and 2 and sealing door panels 2 and 3 are symmetrically distributed up and down and are movably connected. At the bottom side of the side end of the screening box 1, a drain pipe 4 is embedded. Between the inner walls at the top side of the screening box 1, two symmetrically distributed brackets 5 are fixedly connected. At the lower end of the bracket 5, a hanging ear 51 is fixedly connected. Between the inner walls of the screening box 1, a partition plate 6 is fixedly connected. The partition plate 6 is located between the upper and lower sealing door panels 1 and 2, and a plurality of uniformly distributed through holes 7 are opened at the upper end. A collection frame 8 is arranged above the partition plate 6. A collection net cover 9 is arranged at the inner bottom end of the screening box 1. At the upper end of the collection frame 8, three groups of rectangular holes 10 corresponding to the through holes 7 are opened. Between the inner walls of the collection frame 8, a blocking member 11 is installed. The blocking member 11 is located between the inner walls where the two rectangular holes 10 are arranged.

[0033] During the use of this solution, in order to make the existing personnel more convenient when screening fish and complete the automatic screening operation of fish without a large amount of manpower. In this embodiment, this solution can first place the collection net cover 9 at the inner bottom of the screening box 1, place the collection frame 8 above the partition plate 6, and pull up the blocking member 11 and hook it above the hanging ear 51 so that it is perpendicular to the bottom of the collection frame 8. At this time, the screening holes at the bottom of the collection frame 8 are in an open state. Then, the personnel can scatter some fish food inside the collection net cover 9 and inject water into the screening box 1, and put the required fish group into the screening box 1 from the top side.

[0034] After the fish group is put in, according to the habit of the fish group to swim deeper and the phenomenon that the fish group swims towards the bottom can be further increased after the personnel put bait inside the collection net cover 9. During this period, as Figure 3 , after the blocking member 11 is pulled up, the rectangular hole 10 communicates with the through hole 7, so that small-sized fish can pass through the through hole 7 and enter below the partition plate 6, while large-sized fish are restricted by the aperture of the through hole 7 and cannot penetrate into the lower part. In this way, the automatic classification of fish of different sizes is carried out without manual selection by personnel, reducing the work intensity of personnel and further improving the screening efficiency of fish.

[0035] Finally, after a certain period of time, when the fish groups of different sizes are classified under the blocking effect of the partition plate 6, the operator then removes the blocking member 11 hooked above the hanging ear 51, causing the blocking member 11 to slowly drop, pushing the large-sized fish placed above the partition plate 6. Subsequently, the two blocking members 11 are laid flat relative to each other at the bottom side of the collection frame 8, thereby blocking the through holes 7, so that the fish groups can no longer penetrate up and down. At the same time, during the subsequent drainage by the operator, some fish groups are not easily trapped inside the through holes 7 and get injured. Also, after the water body is drained, the small-sized fish stay inside the collection net cover 9, and the large-sized fish stay in the collection frame 8. It is more convenient for the subsequent operator to collect the screened fish groups;

[0036] Thus, during the screening process of fish, the operator only needs to put the fish groups into the screening box 1, and the fish can automatically be classified by size without additional manual assistance. Subsequently, the operator only needs to drain the water and collect the screened fish, which greatly improves the screening efficiency of the fish groups by the operator and also reduces the labor burden.

[0037] Please refer to Figures 1-4 , the blocking member 11 includes two groups of sliding grooves 111 opened on the left and right side walls of the collection frame 8. The sliding grooves 111 are located at the central end between the two pairs of rectangular holes 10 arranged in pairs. A connecting rod 112 is movably connected between the inner walls of the front and rear sliding grooves 111. The outer ends of the connecting rod 112 are respectively rotatably connected with a first filter plate 113 and a second filter plate 114. The diameter of the second filter plate 114 is set to be half of that of the first filter plate 113.

[0038] More specifically: both the bottom ends of the first filter plate 113 and the second filter plate 114 are movably connected with balls 115.

[0039] More specifically: the upper end of the connecting rod 112 is fixedly connected with a towing rope 116, and the outer end of the towing rope 116 is fixedly connected with a hook 117.

[0040] During the use of this solution, when fish need to be screened, the operator can pull the towing rope 116 to cause the connecting rod 112 to drive the first filter plate 113 and the second filter plate 114 to slide upward along the sliding grooves 111 until the hook 117 is hooked above the hanging ear 51. At this time, the first filter plate 113 and the second filter plate 114 are relatively flipped and fit together in a vertical plane. At this time, the first filter plate 113 and the second filter plate 114 no longer cover above the rectangular holes 10. Thus, the fish groups can swim downward along the through holes 7 through the rectangular holes 10, thereby realizing the automatic screening of fish;

[0041] After a certain period of time, after the fish are classified, the operator unhooks the hook 117, causing the entire filter plate 113 and filter plate 114 to drop. Among them, the bottom end of the filter plate 113 and the ball 115 first contact the bottom of the collection frame 8. With the gradual drop of the connecting rod 112 and the rolling of the ball 115, the filter plate 113 turns over and gradually tends to the horizontal plane. Subsequently, after the bottom side of the filter plate 114 also contacts the bottom of the collection frame 8, the two of them cover the rectangular hole 10 at the same time, preventing the fish from swimming into the through hole 7. At the same time, it is used to carry the fish after the water body is drained later, facilitating the operator to load the fish, and also avoiding the phenomenon that the fish gets stuck inside the through hole 7 and is injured by pressure.

[0042] Please refer to Figures 2-3 , two sets of automatically resilient limit plates 12 are installed at the bottom end of the partition plate 6, and the limit plates 12 are located between the inner walls of the through holes 7 arranged in pairs.

[0043] In the process of using this solution, the limit plate 12 is composed of a main shaft and two symmetrically arranged baffles. The two baffles are connected to the side end of the main shaft through torsion springs. When the fish swim downward into the through hole 7, due to the impact force of the fish swimming, the baffles are forced to turn downward and the torsion springs are stressed. Subsequently, when the fish enter the bottom of the screening box 1 and want to swim back, the baffles are again located below one side of the through hole 7 under the reset characteristic of the torsion springs, blocking the through hole 7 and preventing small-sized fish from swimming back and being placed on the upper side of the partition plate 6 again, ensuring the barrier property after fish screening.

[0044] The above embodiments only represent a certain implementation mode of the present invention, and its description is relatively specific and detailed, but it should not be construed as a limitation of the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

Claims

1. A fish screening device for aquaculture, comprising a screening box (1), characterized in that: At the front end of the screening box (1), there are two sealing door panels one (2) and two sealing door panels two (3) symmetrically distributed up and down. At the bottom side of the side end of the screening box (1), a drain pipe (4) is embedded. Between the inner walls at the top side of the screening box (1), there are two symmetrically distributed brackets (5) fixedly connected. At the lower end of the bracket (5), a hanging ear (51) is fixedly connected. Between the inner walls of the screening box (1), a partition plate (6) is fixedly connected. The partition plate (6) is located between the sealing door panel one (2) and the sealing door panel two (3) up and down, and there are a plurality of uniformly distributed through holes (7) opened at the upper end. At the upper end of the partition plate (6), there is a collection frame (8). At the inner bottom end of the screening box (1), there is a collection mesh cover (9). At the upper end of the collection frame (8), there are three groups of rectangular holes (10) corresponding to the through holes (7). Between the inner walls of the collection frame (8), a blocking member (11) is installed. The blocking member (11) is located between the inner walls of the two rectangular holes (10).

2. The fish screening device for aquaculture according to claim 1, wherein: The blocking member (11) includes two groups of sliding grooves (111) opened on the left and right side walls of the collection frame (8). The sliding grooves (111) are located at the central end between the two rectangular holes (10) arranged in pairs. Between the inner walls of the front and rear sliding grooves (111), a connecting rod (112) is movably connected. At the outer ends of the connecting rod (112), a filter plate one (113) and a filter plate two (114) are respectively rotatably connected. The diameter size of the filter plate two (114) is set to be half of that of the filter plate one (113).

3. The fish screening device for aquaculture according to claim 2, wherein: At the bottom ends of both sides of the filter plate one (113) and the filter plate two (114), rolling balls (115) are movably connected.

4. The fish screening device for aquaculture according to claim 2, characterized in that: At the upper end of the connecting rod (112), a traction rope (116) is fixedly connected. At the outer end of the traction rope (116), a hook (117) is fixedly connected.

5. The fish screening device for aquaculture according to claim 1, characterized in that: At the bottom end of the partition plate (6), two groups of automatically reboundable limiting plates (12) are installed. The limiting plates (12) are located between the inner walls of the two through holes (7) arranged in pairs.

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