Induced efficient seedling collecting device for lateolabrax japonicus soil pond seedling culture

Abstract

The utility model discloses an induction type efficient fry collecting device for lateolabrax japonicus soil pond fry culture, which comprises a fry collecting box partially soaked in water, and a fish inlet is arranged on one side of the fry collecting box; the two side nets are both vertically arranged in the earth pond, the two side nets jointly define a trumpet-shaped fish collecting area on the front side of the fish inlet, and the fish collecting area corresponds to the fish inlet; the bottom net is horizontally arranged in the earth pond, the bottom net is arranged in the fish collecting area, one side of the bottom net is installed on the fry collecting box, so that physical damage and serious stress caused by strong net pulling are avoided, induction is taken as a main part, bottom collecting is taken as an auxiliary part, the process is mild, the bottom net can effectively clear and collect fry at the bottom of the pond, and one-time efficient fry collecting can be achieved in combination with feed induction; repeated operation is reduced; the side net and the bottom net can be flexibly combined according to the size of the pond.

Description

Technical Field

[0001] This utility model is an induction-type high-efficiency seedling harvesting device for sea bass seedling raising in earthen ponds, belonging to the field of fishery aquaculture. Background Technology

[0002] Fujian Province is an important aquaculture area for Chinese spotted bass (also known as seven-star bass), and its industry has shifted from relying on wild seedlings to large-scale artificial breeding. Earthen pond breeding is one important model in this process.

[0003] The standard procedure for raising fry in earthen ponds generally involves selecting a pond with a muddy or sandy bottom, measuring 10-15 mu (approximately 1.65-1.25 acres) and a water depth of 1.5-2.0 meters. Before stocking, the pond needs to be cleaned and disinfected (e.g., using bleaching powder), and fertilized (e.g., using fish paste or compound fertilizer) to cultivate natural food organisms, resulting in a clear, bright green water with a transparency of 40-50 cm. 300,000-700,000 newly hatched fry (fry) are stocked per mu. The water is continuously fertilized by regularly sprinkling fermented materials (e.g., fish paste with yeast fermentation extract) to cultivate natural food such as rotifers for the fry to feed on. When the fry reach a total length of 3.0 cm or more, they need to be removed from the earthen pond and transferred to net cages for the fingerling rearing stage, or sold.

[0004] However, the current method of catching fish is generally to use seine nets. When the nets are dragged along the bottom of the pond, they easily stir up silt, making the water turbid and causing the gills of the fish fry to become blocked and stressed. At the same time, the fish fry are squeezed and collided in the net, which can easily cause scales to fall off and injuries to their bodies, seriously affecting their subsequent survival rate. Moreover, seine nets often cannot catch all the fish fry in the pond at once, especially those that are hiding in the depressions at the bottom of the pond or burrowing into the soft mud after being startled. It is necessary to repeatedly pull the net or drain the pond ("pond cleaning") to catch them all. The latter is extremely damaging to the fish fry and is labor-intensive. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an induction-type high-efficiency seedling harvesting device for sea bass seedling raising in earthen ponds, so as to solve the problem.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: an induction-type high-efficiency seedling harvesting device for sea bass seedling raising in earthen ponds, comprising:

[0007] The seedling collection box is partially submerged in water, with a fish inlet on one side;

[0008] Two side nets are placed vertically in the earthen pond. The two side nets together enclose a funnel-shaped fish collection area in front of the fish inlet, wherein the fish collection area corresponds to the fish inlet.

[0009] A bottom net is placed flat in the earthen pond, the bottom net is set in the fish collection area, and one side of the bottom net is installed on the seedling collection box;

[0010] A driving assembly comprises a driving member and a traction rope; one end of the traction rope is connected to the bottom net, and the driving member drives the bottom net to move around the bottom of the fish inlet by winding and unwinding the traction rope.

[0011] Preferably, the collecting box divides the side close to the fish inlet into a buffer zone and the side far from the fish inlet into a collecting zone by a screening assembly.

[0012] Preferably, the screening assembly comprises a filter column, a partition plate and a positioning structure; the filter column is vertically arranged in the collecting box; a plurality of filter holes for fish fry to pass through are arranged on the filter column; the partition plate is slidingly installed on the filter column to shield the filter holes and adjust the caliber of the filter holes; and the partition plate is fixed on the filter column by the positioning structure after sliding.

[0013] Preferably, the positioning structure comprises a plurality of vertically arranged first holes arranged on the filter column, a second hole arranged on the partition plate and a pin connected to the partition plate; the pin passes through the first holes and the second hole to fix the partition plate on the filter column.

[0014] Preferably, a sewage discharge valve is arranged on the buffer zone and the collecting zone.

[0015] Preferably, a feeder is arranged on the buffer zone.

[0016] Preferably, a plurality of reinforcing ribs are arranged on the bottom net; the reinforcing ribs are in the same direction as the traction rope.

[0017] Preferably, a towing rod is arranged on the side of the bottom net far from the collecting box; the traction rope is connected to the towing rod.

[0018] Preferably, the two side inclined edges of the bottom net are close to the side net.

[0019] Preferably, a lead weight is hung on the bottom net.

[0020] Beneficial effects

[0021] The utility model avoids physical damage and serious stress caused by strong net pulling, and mainly induces and secondarily collects the bottom, the process is gentle, the bottom net can effectively collect fry on the bottom of the pool, combined with feed induction, one-time efficient fry collection can be realized, and repeated operation is reduced; the side net and the bottom net can be flexibly combined according to the size of the pond. BRIEF DESCRIPTION OF DRAWINGS

[0022] Other features, objects and advantages of the utility model will become more apparent by reading the following detailed description of non-restrictive embodiments with reference to the accompanying drawings:

[0023] Figure 1It is a side view structure schematic diagram of the utility model;

[0024] Figure 2 It is a top view structure schematic diagram of the utility model;

[0025] Figure 3 It is a front view structure schematic diagram of the utility model screening assembly;

[0026] Figure 4 It is a top view structure schematic diagram of the utility model screening assembly;

[0027] Figure 5 It is a schematic diagram of the utility model Figure 4 partial A. Specific embodiments

[0028] In order to make the technical means, creative features, purposes and effects of the utility model easy to understand, the utility model is further described below in combination with specific embodiments.

[0029] Please refer to Figures 1-5 The utility model provides a kind of for inducing formula efficient seedling collecting device of high efficiency of Plectropomus leopardus soil pond seedling, technical scheme comprising:

[0030] Milling box 1, in one of the embodiments, by corresponding buoyancy of the milling box 1 bottom arrangement float 8, make milling box 1 half soak in water, ensure water level stability during seedling collection. Box is divided into buffer zone 11 and seedling collection area 12 by screening assembly 5, buffer zone 11 is used for fry transition adaptation, seedling collection area 12 is used for final fry collection. Fish inlet 13 is arranged in buffer zone 11 side, preferably, fish inlet 13 edge is treated with round angle, avoid scratching fry.

[0031] 2 Vertical side net 2, mesh size is adjusted according to the stage of seedling culture, side net 2 bottom is embedded in the bottom of soil pond and is fixed, prevent fry from escaping from bottom. 2 Side net 2 is formed in front side of fish inlet 13 horn-shaped fish collection area 21, narrow mouth of fish collection area 21 is connected to fish inlet 13, and fish fry is induced to gather using the guiding effect of horn mouth.

[0032] The bottom net 3 is laid flat in the trumpet-shaped fish collecting area 21, covering part or all of the bottom range of the fish collecting area 21. One side edge of the bottom net 3 is fixedly installed at the bottom of the fish inlet 13 of the fish collecting tank 1, and can be flipped around the connection point as the pivot point; the side away from the fish collecting tank 1 of the bottom net 3 is fixedly installed with a towing rod 32 for connecting the towing rope 42, and further, the towing rope 42 is provided with two, connected on both sides of the towing rod 32, so that when the towing rope 42 is pulled, the bottom net 3 can be moved in a nearly flat posture. A plurality of transverse reinforcing ribs 31 are provided on the bottom net 3, the reinforcing ribs 31 are consistent in direction with the towing rope 42, which improves the load-bearing capacity of the bottom net 3 and prevents the net body from deforming during the collection process. The two side slopes of the bottom net 3 are close to the inner side of the side net 2, preventing the fry from escaping from the gap.

[0033] The driving assembly includes a driving member 41 and a towing rope 42. The driving member 41 is a servo motor installed on a support on the fish collecting tank 1, and has a forward and reverse rotation function, which can accurately control the speed of the towing rope 42. The towing rope 42 is a high-strength nylon rope, one end of which is fixed to the towing rod 32, and the other end is wound around the drum of the servo motor. The towing rope 42 is retracted and extended by the forward and reverse rotation of the motor, thereby driving the bottom net 3 to flip upward around the bottom of the fish inlet 13 as the pivot point.

[0034] The screening assembly 5 includes a filter column 61, a partition plate 62, and a positioning structure. The filter column 61 is vertically arranged in the fish collecting tank 1. A plurality of filter holes 611 for fry to pass through are arranged on the filter column 61. The partition plate 62 is slidably installed on the filter column 61 to block the filter holes 611 and adjust the aperture of the filter holes 611. After sliding, the partition plate 62 is fixed on the filter column 61 by the positioning structure. The positioning structure includes a plurality of vertically arranged first holes 612, a second hole 621 arranged on the partition plate 62, and a pin 63 tied on the partition plate 62. The first holes 612 are arranged on the filter column 61. The pin 63 passes through the first holes 612 and the second hole 621, so that the partition plate 62 is fixed on the filter column 61.

[0035] Working principle:

[0036] Preparation stage: Fix the fish collecting tank 1 unit at the edge of the pond or on the floating platform 8, lay the spliced side net 2 from the fish inlet 13 to the soil pool to form the fish collecting area 21, and arrange the flat bottom net 3.

[0037] Induction stage: Turn on the feeder 6 at the top of the fish collecting tank 1, and continuously feed a small amount of feed (such as fish meal or micro-particle feed) that the fry like into the buffer area 11 and the fish collecting area 21, and use the feeding habit of the fish to gradually attract the fry from all parts of the pond to the vicinity of the fish collecting tank 1.

[0038] Bottom-collecting drive stage: After the fish gather, the towing rod of the bottom net 3 is pulled by the drive component 41, so that the bottom net 3 moves around the bottom of the fish inlet 13 as the axis point. This process "sweeps" out the fish fry hidden at the bottom of the earthen pond and guides them with the current by the side net 2.

[0039] Collection and Temporary Holding Stage: Fish fry swim along the side net 2 into the collection box 1. They first enter the buffer zone 11, where they can initially acclimatize. The operator can selectively place fish fry of uniform size into the collection area 12 by observing and adjusting the diameter of the filter holes 611, achieving rough grading. During the collection process, the drain valve 7 can be opened periodically to remove bottom sludge.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0041] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An induction-type high-efficiency seedling harvesting device for sea bass seedling raising in earthen ponds, characterized in that: The application relates to a fish collecting device. The device comprises a fish collecting box partially immersed in water, an inlet for fish on one side of the box, two side nets vertically arranged in the fish pond, and a bottom net horizontally arranged in the fish pond. The two side nets and the bottom net jointly form a trumpet-shaped fish collecting area in front of the inlet. The device further comprises a driving assembly comprising a driving member and a traction rope. One end of the traction rope is connected to the bottom net, and the driving member drives the bottom net to move around the bottom of the inlet by winding and unwinding the traction rope.

2. The device for inducing efficient collection of seedlings of Epinephelus malabaricus in a soil tank according to claim 1, characterized in that: The fish collecting box is divided into a buffer area near the inlet and a fish collecting area far from the inlet by a screening assembly.

3. The device for inducing efficient collection of seedlings of Epinephelus malabaricus in a soil pond according to claim 2, characterized in that: The screening assembly comprises a filter column, a partition plate and a positioning structure.

4. The device for inducing efficient collection of seedlings of Epinephelus malabaricus according to claim 3, characterized in that: The filter column is vertically arranged in the fish collecting box, and a plurality of filter holes for fish fry to pass through are arranged on the filter column.

5. The device for inducing high efficiency of seedling collection of Epinephelus malabaricus in soil ponds according to claim 2, characterized in that: The partition plate is slidably arranged on the filter column to shield the filter holes and adjust the diameters of the filter holes.

6. The device for inducing high efficiency of seedling collection of Epinephelus malabaricus in soil ponds according to claim 2, characterized in that: The positioning structure comprises a plurality of vertically arranged first holes arranged on the filter column, a second hole arranged on the partition plate and a latch arranged on the partition plate.

7. The device for inducing efficient collection of juvenile fish according to claim 1, wherein: The latch passes through the first holes and the second hole to fix the partition plate on the filter column.

8. The device for inducing efficient collection of juvenile fish according to claim 1, wherein: The buffer area and the fish collecting area are both provided with a sewage discharge valve.

9. The device for inducing high efficiency of seedling collection of Epinephelus malabaricus according to claim 1, wherein: A feeder is arranged on the buffer area.

10. The device for inducing high efficiency of seedling collection of Epinephelus malabaricus in soil ponds according to claim 1, characterized in that: A plurality of reinforcing ribs are arranged on the bottom net and are oriented in the same direction as the traction rope. A dragging rod is arranged on one side edge of the bottom net far from the fish collecting box. The traction rope is connected to the dragging rod. Two side inclined edges of the bottom net are close to the side nets. Lead sinkers are hung on the bottom net.

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