Composite artificial fish nest

Abstract

The utility model discloses a composite artificial fish nest. The fish nest is composed of a fixed foundation, a fixed rod, a floating rod and a net bag. The fixed foundation is connected with a ring-shaped demersal egg attaching fish nest, the fixed foundation is provided with an upward fixed rod penetrating through the ring of the demersal egg attaching fish nest, the floating rod is connected through the fixed rod, the floating rod is provided with a fixed rod hole for the fixed rod to penetrate through, the floating rod is sleeved on the fixed rod through the fixed rod hole, and the mesh bag is suspended below the floating rod through a connecting rope. The net bag collects floating eggs and floats along with the water level change along with the floating rod floating on the water surface, it can be guaranteed that the distance between the net bag and the water surface is fixed, and incubation of the floating eggs can be supported. The annular demersal egg attachment fish nest built by hollow bricks is arranged at the water bottom, the bottom is closed, a natural deposition environment is simulated, holes of the hollow bricks can enlarge the attachment surface of a hatching area, and different sizes of the holes provide concealment and protection for different types of fishes.

Description

Technical Field

[0001] The utility model belongs to the field of fish resource protection facilities, and specifically relates to a composite artificial fish nest. Background Art

[0002] With the development of fish farming, the protection and improvement of fish habitats have received more and more attention. Artificial fish nests, as an artificial facility that provides fish breeding and habitat, have been widely used. However, existing artificial fish nests have some shortcomings in structure and function, such as easy damage of materials, insufficient space utilization, and problems with fish egg attachment. Therefore, a new type of composite artificial fish nest is needed to solve these problems. Utility Model Content

[0003] The utility model aims to provide a composite artificial fish nest to meet the needs of different fishes for laying sinking eggs and floating eggs, improve the environment for fish breeding and habitat, and improve the survival and reproduction efficiency of fishes.

[0004] The purpose of the utility model is achieved through the following technical means: a composite artificial fish nest, including a fixed foundation, a sinking egg attachment fish nest with a circular ring body connected to the fixed foundation, a fixed rod passing through the sinking egg attachment fish nest circular ring upward connected to the fixed foundation, a floating rod is arranged on the fixed rod, a fixed rod hole for the fixed rod to pass through is opened on the floating rod, the floating rod is sleeved on the fixed rod through the fixed rod hole, and a plurality of net bags are suspended below the floating rod through connecting ropes.

[0005] The sinking egg attachment fish nest is composed of hollow bricks, and the holes of the hollow bricks communicate the inside of the circular ring with the outside of the circular ring.

[0006] The utility model also comprises a foam frame, which is located below the floating rod and connected with the floating rod through a connecting rod, and a plurality of net bags are all within the range of the foam frame.

[0007] The outer side of the foam frame is also connected with a foam board extending outward.

[0008] The fixed foundation is trapezoidal.

[0009] There are many types of hollow bricks, each with a different hole size.

[0010] Waterweed or palm flakes are placed in the net bag.

[0011] A plurality of partition plates are arranged in the sinking egg attachment fish nest to divide the interior of the sinking egg attachment fish nest into a plurality of compartments, and a hole for a fixing rod to pass through is opened in the center of the partition plate.

[0012] The top of the fixing rod is provided with a thread, and a limiting bolt is connected to the fixing rod above the floating rod.

[0013] The beneficial effects of the utility model are as follows: the net bag collects floating eggs, and floats along with the floating rod floating on the water surface as the water level changes, thereby ensuring that the distance between the net bag and the water surface is fixed and supporting the hatching of floating eggs; the circular ring-shaped sinking egg attachment fish nest formed by hollow bricks on the bottom of the water has a closed bottom to simulate a natural sedimentation environment, and the holes in the hollow bricks can increase the attachment surface of the hatching area, and different hole sizes provide concealment and protection for different types of fish. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of a composite artificial fish nest;

[0015] Figure 2 This is a schematic diagram of the layout of a composite artificial fish nest;

[0016] Figure 3 It is a top view of the foam board structure;

[0017] Figure 4 It is a cross-sectional view of the floating rod and the connecting rod structure;

[0018] Figure 5 This is a top view of the floating rod;

[0019] Figure 6 This is a schematic diagram of a hollow brick structure;

[0020] In the figure, 1 is a fixed foundation; 2 is a sinking egg attachment fish nest; 3 is a fixed rod; 4 is a floating rod; 5 is a net bag; 6 is a foam frame; 7 is a foam board; 8 is a connecting rod; 9 is a ring; 10 is a partition board;

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. DETAILED DESCRIPTION

[0022] [Example 1]

[0023] like Figure 1 and Figure 2 As shown, a composite artificial fish nest comprises a fixed foundation 1, to which a circular sinking egg attachment fish nest 2 is connected, and a fixed rod 3 passing through the circular ring of the sinking egg attachment fish nest 2 and upward is also connected to the fixed foundation 1, a floating rod 4 is arranged on the fixed rod 3, a fixing rod hole for the fixing rod 3 to pass through is opened on the floating rod 4, the floating rod 4 is sleeved on the fixing rod 3 through the fixing rod hole, and a plurality of net bags 5 are suspended below the floating rod 4 through connecting ropes.

[0024] The fixed foundation 1 is made of prefabricated concrete blocks, which are used to fix the entire device on the bottom of the water. The circular sinking egg attachment fish nest 2 is connected to the fixed foundation 1. The entire fish nest is a space with a closed bottom, simulating the natural sedimentation environment and shape of a tree hole, and providing a space for sinking egg fish to hide, protect and hatch eggs.

[0025] There is also a vertically upward fixed rod 3 in the center of the fixed foundation 1, which can be specifically made of steel pipe. The fixed rod 3 passes through the ring until it extends out of the water. The floating rod 4 is sleeved on the fixed rod 3 through the fixed rod hole. The floating rod 4 floats up and down along the fixed rod 3 according to the change of water level. A net bag 5 is hung below the floating rod 4 through a connecting rope (nylon rope can be used). The net bag 5 is used to collect floating eggs and serves as an attachment area for floating eggs. Several smaller net bags 5 provide more habitat space and shelter. The lower end of the fixed rod 3 is inserted into the fixed foundation 1 and connected by steel bars and steel rivets. Below the fixed rod hole of the floating rod 4, a collar 9 is also connected. The collar 9 matches the fixed rod hole. The fixed rod 3 passes through the collar 9 and the fixed rod hole. The collar 9 increases the contact area between the floating rod 4 and the fixed rod 3, so that the floating rod 4 can better maintain balance on the fixed rod 3.

[0026] The sinking egg attachment fish nest 2 is composed of hollow bricks, and the holes of the hollow bricks communicate the inside and outside of the circular ring.

[0027] The sinking egg attachment fish nest 2 is built by hollow bricks, and the inside and outside of the fish nest, i.e., the inside and outside of the ring, are connected through the holes of the hollow bricks. The sinking egg attachment fish nest 2 provides a large space for fish breeding and habitat, which is a sinking egg attachment area. In addition, the outer wall of the hollow nest 2 is relatively rough, and algae, water plants, etc. can be attached, further providing food and living space, so that fish can also lay eggs among the water plants.

[0028] like Figure 6 As shown, there are multiple types of hollow bricks, each with different hole sizes. By using multiple hollow bricks with different hole sizes, living space is provided for fish of different sizes, making it convenient for fish of different sizes to enter the sinking egg attachment fish nest 2. Protective devices such as protective nets and baffles can also be set around the sinking egg attachment fish nest 2 to prevent the fish from being disturbed and harmed by the outside.

[0029] The fixed foundation 1 is trapezoidal.

[0030] Waterweed or palm leaves are placed in the net bag 5.

[0031] Water plants can be arranged on the net bag 5, the inner and outer walls of the sinking egg attachment fish nest 2, and the fixed foundation 1 inside the sinking egg attachment fish nest 2. Rocks or other decorations can also be arranged inside the sinking egg attachment fish nest 2 to provide hiding and protection space for fish and provide more attachment surfaces for fish spawning and egg attachment.

[0032] It also includes a foam frame 6 , which is located below the floating rod 4 . The foam frame 6 is connected to the floating rod 4 through a connecting rod 8 , and a plurality of net bags 5 are all within the range of the foam frame 6 .

[0033] like Figure 3 As shown, the outer side of the foam frame 6 is also connected to a foam board 7 extending outward.

[0034] like Figure 4 As shown, a quadrilateral foam frame 6 is arranged below the floating rod 4, and the foam frame 6 is connected to the floating rod 4, and sinks and floats together with the water level change, and the outer side of the foam frame 6 is also connected to a foam board 7 extending outward, so as to expand the area for collecting floating eggs and provide support for the floating eggs.

[0035] The net bag 5 is within the range of the foam frame 6, which can prevent the net bag 5 from drifting too far away from the foam frame 6. The foam frame 6 also increases the drainage volume, can provide more buoyancy, so that more shelters such as water plants can be arranged on the net bag 5 and the foam board 7.

[0036] like Figure 5 As shown, the floating rod 4 can also be in a cross shape, and each side of the cross is connected to the foam frame 6 through a connecting rod 8, so that the floating rod 4 and the foam frame 6 are more stable as a whole, and more net bags 5 can be hung on the floating rod 4.

[0037] A plurality of partition plates 10 are arranged in the sinking egg attachment fish nest 2 to divide the interior of the sinking egg attachment fish nest 2 into a plurality of compartments, and a hole is provided in the center of the partition plate 10 for the fixing rod 3 to pass through.

[0038] like Figure 1 and Figure 2 As shown, the top of the fixing rod 3 is provided with a thread, and a limiting bolt 11 is connected to the fixing rod 3 above the floating rod 4.

[0039] There is a section with threads on the upper part of the fixed rod 3, and the limit bolt 11 is connected to the threaded section. Its function is to prevent the floating rod 4 and the foam frame 6 from floating too high as a whole. For example, because the weight of the net bag 5 is too light, the foam frame 6 alone has provided sufficient buoyancy, causing the floating rod 4 to float to the surface of the water, and the net bag 5 suspended below the floating rod 4 is too close to the water surface, or the net bag 5 is also above the water surface. By arranging the limit bolt 11 above the floating rod 4, the floating rod 11 is prevented from moving up along the fixed rod 3, thereby ensuring that the net bag 5 will not be too close to the water surface, effectively protecting the fish eggs therein.

Claims

1. A composite artificial fish nest, characterized in that: The invention comprises a fixed foundation (1), a circular sinking egg attachment fish nest (2) is connected to the fixed foundation (1), a fixed rod (3) passing through the circular ring of the sinking egg attachment fish nest (2) and extending upward is also connected to the fixed foundation (1), a floating rod (4) is arranged on the fixed rod (3), a fixing rod hole for the fixing rod (3) to pass through is opened on the floating rod (4), the floating rod (4) is sleeved on the fixing rod (3) through the fixing rod hole, and a plurality of net bags (5) are suspended below the floating rod (4) through connecting ropes.

2. A composite artificial fish nest according to claim 1, characterized in that: The sinking egg attachment fish nest (2) is composed of hollow bricks, and the holes of the hollow bricks communicate the inside of the circular ring with the outside of the circular ring.

3. The composite artificial fish nest according to claim 1, characterized in that: It also comprises a foam frame (6), which is located below the floating rod (4). The foam frame (6) is connected to the floating rod (4) via a connecting rod (8), and the plurality of net bags (5) are all within the range of the foam frame (6).

4. A composite artificial fish nest according to claim 3, characterized in that: The outer side of the foam frame (6) is also connected to a foam board (7) extending outwards.

5. The composite artificial fish nest according to claim 1, characterized in that: The fixed foundation (1) is trapezoidal.

6. The composite artificial fish nest according to claim 2, characterized in that: There are many types of hollow bricks, each with a different hole size.

7. A composite artificial fish nest according to claim 1 or 3, characterized in that: Waterweed or palm leaves are placed in the net bag (5).

8. The composite artificial fish nest according to claim 1, characterized in that: A plurality of partition plates (10) are arranged in the sinking egg attachment fish nest (2) to divide the interior of the sinking egg attachment fish nest (2) into a plurality of compartments, and a hole for the fixing rod (3) to pass through is opened in the center of the partition plate (10).

9. The composite artificial fish nest according to claim 2, characterized in that: The top of the fixing rod (3) is provided with a thread, and a limiting bolt (11) is connected to the fixing rod (3) above the floating rod (4).

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