Three-dimensional aquaculture net cage for fishes and shrimps

Abstract

The utility model discloses a fish and shrimp three-dimensional cultivation net cage which comprises a net cage body, the net cage body is a three-dimensional trapezoid polyethylene net cage body which is formed by sewing a polyethylene net, the bottom area of the polyethylene net cage body is smaller than the opening area, the polyethylene net cage body is connected with stand columns through net ropes, and the binding length of the net ropes keeps half of the polyethylene net cage body to sink into water. The polyethylene net cage is supported and fixed in the culture pond through the stand columns, and a circle of anti-shrimp fence sliding film is sewn on the periphery of the top of the polyethylene net cage. According to the three-dimensional fish and shrimp culture net cage, fishes and shrimps can be completely isolated and mixed cultured in the same culture pond, so that the growth of the fishes and the shrimps does not interfere with each other, and the culture survival rate is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of aquaculture devices, in particular to a three-dimensional fish and shrimp culture cage. Background Art

[0002] As the country attaches great importance to ecological protection and the utilization of water resources becomes increasingly tense, aquaculture in natural waters has also been restricted. The biggest challenge of agricultural production in the 21st century is to use fewer resources to produce more than three times the products. Aquaculture is the industry with the largest water demand in agriculture and faces unprecedented challenges. Therefore, how to tap into greater production potential in limited aquaculture water bodies will become one of the future development trends. In recent years, the mixed culture of freshwater fish and shrimp has gradually emerged. It mainly utilizes the different water layers of the water bodies where the middle and upper layers of freshwater fish and shrimp live and the complementary feeding habits to increase the output of aquatic products and improve the economic benefits per unit area of ​​aquaculture water bodies. Public literature also reports some fish and shrimp farming devices, such as:

[0003] 1. Chinese Patent: Multifunctional fish and shrimp breeding equipment, application number: 201710773391.4, application date: 2017.08.31, abstract: The present invention provides a multifunctional fish and shrimp breeding equipment, belonging to the field of aquaculture equipment, including a rectangular frame, a hanging net and a hanging basket installed in the frame, a monitoring system and an oxygen supply system arranged on the frame, the upper and lower bottom surfaces of the frame are composed of a plurality of horizontal pipes and longitudinal pipes, and the upper and lower bottom surfaces form a rectangular frame through vertical pipes, the peripheral surface and the lower bottom surface of the frame are paved with a fence, the fence and the hanging net can facilitate fish and shrimp to climb, aquatic plants can be planted in the hanging basket, the monitoring system can monitor the dissolved oxygen, pH value, total ammonia nitrogen, hydrogen sulfide content and other water quality indicators of the breeding water body, and the oxygen supply system can ensure the dissolved oxygen content in the water body. The equipment can not only realize the symbiosis of fish, shrimp and aquatic plants, but also has a monitoring system and oxygen supply system. At the same time, the equipment has strong anti-fouling performance, which reduces the frequency of equipment cleaning, saves labor costs and time costs. It is an efficient, environmentally friendly and multifunctional fish and shrimp farming equipment.

[0004] 2. Chinese Patent: A fish and shrimp breeding box, application number: 202120845886.5, application date: 2021.04.23, abstract: The utility model belongs to the field of fish and shrimp breeding, and specifically relates to a fish and shrimp breeding box, including a box body, a support ring is arranged in the box body, and two symmetrically distributed connecting rods are fixedly connected to the inner side of the support ring, and one end of the two connecting rods is commonly fixedly connected to a bearing sleeve, a bearing is installed in the bearing sleeve, and a connecting shaft is fixedly sleeved in the bearing, and an aeration pipe is fixedly connected to the upper end of the connecting shaft, an aeration hole is opened on the aeration pipe, and a vertical pipe is fixedly connected to the aeration pipe, and a driven gear is fixedly connected to the outer side of the vertical pipe. This solution can perform rotary aeration by designing a rotating mechanism consisting of a riser, an aeration pipe, a driven gear, a motor, a driving gear, etc., so as to expand the aeration range and thus achieve a better aeration effect. Moreover, by designing structures such as a bellows and a filter, dust can be filtered when the air pump is delivering air, thus preventing dust from entering the box and making the aerated air cleaner.

[0005] 3. Chinese Patent: A fish and shrimp farming system, application number: 202021787471.9, application date: 2020.08.24, abstract: The utility model provides a fish and shrimp farming system, which relates to the field of aquatic product farming technology, to solve the problems of time-consuming and labor-intensive salvage of shrimp fry after desalination and coarsening in the prior art, and the low survival rate of shrimp fry. The fish and shrimp farming system includes a desalination and coarsening pool, a growth pool and a barrier mechanism. The desalination and coarsening pool is connected to the barrier mechanism through a connecting pipe, and the barrier mechanism is connected to the growth pool through a pipe. The height of the bottom of the growth pool is lower than the height of the bottom of the desalination and coarsening pool. The barrier mechanism can make the desalination and coarsening pool and the growth pool in a connected state or a separated state. When the barrier mechanism intercepts the flow, the desalination and coarse pool and the growth pool are in a separated state, and the desalination and coarse pool and the growth pool operate independently. After opening the barrier mechanism, the desalination and coarse pool are connected to the growth pool, and the shrimp seedlings in the desalination and coarse pool are discharged into the large pool for breeding, avoiding the loss and stress response of the desalination shrimp seedlings during the artificial catching and transfer process, and also saving labor and making work more efficient.

[0006] After investigation and research, it was found that the above-mentioned public documents are not suitable for mixed breeding of fish and shrimp in the same water area. There are currently two main problems that limit mixed breeding of fish and shrimp: First, the shrimp fry are small or the shrimp are weak when molting. If carnivorous fish or omnivorous fish are cultured, if there is insufficient shelter at the bottom of the water body (such as water plants, shrimp nests, etc.), the fish will eat the shrimp fry. Second, if the water level is shallow, the fish fry are small, and the shrimp are relatively large, the shrimp will climb along the shelter to the middle and upper layers to eat the fish fry. Therefore, it is necessary to develop a mixed breeding device that can completely isolate fish and shrimp in the breeding pond, so as to ensure that the growth of fish and shrimp does not interfere with each other and improve the survival rate of breeding. Summary of the invention

[0007] The utility model aims to provide a three-dimensional fish and shrimp culture cage, which can completely isolate fish and shrimp in the same culture pond for mixed culture, thereby ensuring that the growth of fish and shrimp does not interfere with each other and improving the culture survival rate.

[0008] In order to achieve the purpose of the utility model, the technical solution adopted is:

[0009] A three-dimensional fish and shrimp breeding cage comprises a cage, wherein the cage is a three-dimensional trapezoidal polyethylene cage sewn from a polyethylene net, the bottom area of ​​which is smaller than the opening area, the polyethylene cage is connected to a column via a net rope, the binding length of the net rope keeps half the volume of the polyethylene cage submerged in water, the polyethylene cage is supported and fixed in a breeding pond via the columns, and a circle of shrimp-proof enclosure sliding film is sewn on the top periphery of the polyethylene cage.

[0010] Further preferably, the polyethylene cage comprises a polyethylene net and a cage frame in a three-dimensional trapezoidal shape, and the polyethylene net is arranged around the four sides and the bottom of the cage frame.

[0011] Further preferred: the four corners of the top of the polyethylene net box are connected to the columns by net ropes respectively, the four corners correspond to four columns, and two adjacent polyethylene net boxes in the same row can share the two columns between the two polyethylene net boxes, that is, the two polyethylene net boxes are supported and fixed by six columns.

[0012] The use of this three-dimensional fish and shrimp breeding cage in the same breeding pond for mixed breeding of fish and shrimp can effectively solve the problem of low survival rate caused by mutual interference when fish and shrimp are mixed. Its technical effects are specifically reflected in: First, the three-dimensional fish and shrimp breeding cage is hung in the upper water body of the breeding pond, and the fish is placed in the three-dimensional fish and shrimp breeding cage for breeding, and the shrimp is raised in the breeding pond outside the cage, which can completely isolate the fish and shrimp, effectively preventing the fish from entering the bottom of the water body and endangering the growth of the shrimp. Second, the polyethylene cage is designed as a three-dimensional trapezoid, and a shrimp-proof enclosure sliding film is sewn around the top. When the shrimp climbs from the bottom periphery of the cage to the top of the cage, it encounters the shrimp-proof enclosure sliding film and loses friction. Under the action of gravity, it will fall into the water and cannot enter the cage through the top of the cage, thereby preventing the shrimp from entering the cage and endangering the growth of the fry. In general, the use of this three-dimensional fish and shrimp breeding cage for mixed breeding of fish and shrimp can completely isolate fish and shrimp, effectively avoid fish and shrimp cannibalism, ensure the survival rate of fish and shrimp, and greatly increase the output of aquatic products while keeping the volume of breeding water unchanged, thus giving full play to the production potential of breeding water and greatly improving the economic benefits per unit area of ​​breeding water. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the connection structure of the three-dimensional fish and shrimp breeding cage in Example 1;

[0014] Figure 2This is a schematic diagram of the connection structure of the three-dimensional fish and shrimp breeding cage in Example 2;

[0015] The names corresponding to the numbers in the figure are:

[0016] 1. Pillars, 2. Polyethylene cages, 3. Shrimp-proof enclosure sliding film, 4. Net ropes, 5. Cage frame. DETAILED DESCRIPTION

[0017] In order to describe the present technology more clearly, the present technology is further described in detail below with reference to the accompanying drawings and embodiments. Example 1

[0018] A three-dimensional fish and shrimp breeding cage comprises a cage, wherein the cage is a three-dimensional trapezoidal polyethylene cage 2 made of polyethylene mesh and having a bottom area smaller than an opening area, the polyethylene cage 2 is connected to a column 1 through a mesh rope 4, the binding length of the mesh rope 4 keeps half the volume of the polyethylene cage 2 submerged in water, the polyethylene cage 2 is supported and fixed in a breeding pond through the column 1, and a circle of shrimp-proof enclosure sliding film 3 is sewn on the top periphery of the polyethylene cage 2.

[0019] The four corners of the top and bottom of the polyethylene net box 2 are connected to the columns 1 through net ropes 4 respectively, and the four corners correspond to four columns 1. Two adjacent polyethylene net boxes 2 in the same row share the two columns 1 between the two polyethylene net boxes 2, that is, the two polyethylene net boxes 2 are supported and fixed by six columns 1. Example 2

[0020] A three-dimensional fish and shrimp breeding net cage comprises a net cage, wherein the net cage comprises a polyethylene net and a three-dimensional trapezoidal net cage frame 5, the bottom area of ​​the net cage frame 5 is smaller than the opening area, the polyethylene net is sewn around the four sides and the bottom of the net cage frame 5, the top four corners of the polyethylene net cage 2 are respectively connected to the columns 1 through net ropes 4, the four corners correspond to four columns 1, two adjacent polyethylene net cages 2 in the same row can share the two columns 1 between the two polyethylene net cages 2, that is, the two polyethylene net cages 2 are supported and fixed by six columns 1, the binding length of the net rope 4 keeps half the volume of the polyethylene net cage 2 submerged in water, the polyethylene net cage 2 is supported and fixed in the breeding pond by the columns 1, and a circle of shrimp-proof enclosure sliding film 3 is sewn on the top periphery of the polyethylene net cage 2.

[0021] The installation and application process of the three-dimensional fish and shrimp breeding cage is as follows: according to the specifications of the fry to be released and the size of the breeding pond, a polyethylene net with a corresponding mesh is selected to sew a polyethylene cage 2 of a corresponding size, and a cage frame 5 is bound around the polyethylene cage 2 to fix the shape of the polyethylene cage 2. The bottom area of ​​the polyethylene cage 2 is slightly smaller than the opening area, and the whole is an inverted three-dimensional trapezoid; a circle of net rope 4 is set on the top edge of the polyethylene cage 2 to prop open the opening of the polyethylene cage 2 and hang it on the column 1; the shrimp-proof enclosure sliding film 3 is sewn on the outer periphery of the top of the polyethylene cage 2 to form a closed circle; according to the shape of the breeding pond, the columns 1 are arranged in a row; the polyethylene cage 2 is hung on the column 1, and two polyethylene cages 2 can share two columns in the middle. The spacing between the polyethylene cages 2 is adjusted according to the actual site conditions, and the shortest is not less than 50cm, so that the breeding water can flow smoothly and the dissolved oxygen content in the water is ensured.

[0022] The above description is not a limitation of the present application, and the present application is not limited to the above examples. Any changes, modifications, additions or substitutions made by technicians in this field within the essential scope of the present application should fall within the scope of protection of the present application.

Claims

1. A three-dimensional fish and shrimp breeding cage, comprising a cage, characterized in that: The net box is a polyethylene net box (2) sewn from a polyethylene net into a three-dimensional trapezoidal shape, the bottom area of ​​which is smaller than the opening area. The polyethylene net box (2) is connected to the column (1) via a net rope (4). The polyethylene net box (2) is supported and fixed in the culture pond by the column (1). A circle of shrimp-proof enclosure sliding film (3) is sewn on the outer periphery of the top of the polyethylene net box (2).

2. The three-dimensional fish and shrimp breeding cage according to claim 1 is characterized by: The polyethylene net box (2) comprises a polyethylene net and a three-dimensional trapezoidal net box frame (5), wherein the polyethylene net is arranged around the four sides and the bottom of the net box frame (5).

3. The three-dimensional fish and shrimp breeding cage according to claim 1 is characterized in that: The four corners of the top of the polyethylene net box (2) are connected to the columns (1) via net ropes (4), respectively. The four corners correspond to four columns (1). Two adjacent polyethylene net boxes (2) in the same row can share the two columns (1) between the two polyethylene net boxes (2), that is, the two polyethylene net boxes (2) are supported and fixed by six columns (1).

Images