Floating net cage for purifying water quality based on symbiosis of fish, shellfish and grass

Abstract

The invention discloses a floating net cage for purifying water quality based on fish-shellfish-grass symbiosis, and relates to the technical field of lake water quality purification, the floating net cage comprises an annular hollow floating pipe, and a plastic fixing cylinder fixedly arranged outside the annular hollow floating pipe in a sleeving manner; a plurality of supporting plates are fixedly arranged on the top surface of the annular hollow floating pipe at intervals in the circumferential direction of the annular hollow floating pipe, an upper-layer vegetation blanket is fixedly arranged on a plane defined by the top surfaces of the supporting plates, and a circle of floating plants are planted on the upper-layer vegetation blanket in the circumferential direction of the upper-layer vegetation blanket; a layer of lower-layer vegetation blanket is fixedly arranged on the top surface of the closed end of the net cylinder, submerged plants are planted on the lower-layer vegetation blanket, and shellfish and gravel are further placed on the top surface of the lower-layer vegetation blanket; a plurality of circles of fish exchange channels are formed in the cylindrical surface of the net cylinder, and each fish exchange channel is communicated with the inner cavity of the net cylinder. The device has the advantages that manual algae fishing and drug removal are replaced, algae pollution and eutrophication can be thoroughly controlled, and the height can be adjusted.

Description

Technical Field

[0001] The invention relates to the technical field of purifying lake water, in particular to a floating cage for purifying water based on the symbiosis of fish, shellfish and grass. Background Art

[0002] In recent years, the eutrophication of the lake has been increasing, and algae pollution has occurred frequently. The reason for the crazy growth of algae in the lake is the massive increase in nutrients such as nitrogen and phosphorus in the lake, and the crazy production of algae has undoubtedly affected the water quality of the lake.

[0003] At present, the control of algae pollution and eutrophication in lake water mainly adopts physical and chemical means, such as manual dredging, chemical flocculation, biological manipulation and other methods. Although these methods can curb algae outbreaks and improve water quality in the short term, they generally have problems such as high cost, short-term effect, and great ecological damage. For example: manual dredging and chemical flocculation can only temporarily remove algae from the water body but cannot fundamentally reduce the nutrient load. Once the external conditions are suitable, the algae will quickly resume growth. Moreover, the large-scale use of chemical agents may cause secondary pollution and destroy the species diversity and ecological resilience of the aquatic ecosystem.

[0004] Therefore, there is an urgent need for a floating cage that can replace artificial algae fishing and the use of chemicals to remove algae, can completely control algae pollution and eutrophication, and has an adjustable height. Summary of the invention

[0005] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a floating cage that can replace artificial algae fishing and algae removal using chemicals, can completely control algae pollution and eutrophication, and has a highly adjustable water purification based on fish, shellfish and grass symbiosis.

[0006] The purpose of the present invention is achieved through the following technical solutions: a floating cage for purifying water quality based on the symbiosis of fish, shellfish and grass, which comprises an annular hollow floating tube, a plastic fixing tube fixedly mounted on the outside of the annular hollow floating tube, the plastic fixing tube extending downwardly below the annular hollow floating tube, a plurality of support plates fixedly arranged on the top surface of the annular hollow floating tube and spaced along its circumferential direction, an upper vegetation blanket fixedly arranged on the plane surrounded by the top surface of each support plate, a circle of floating plants planted on the upper vegetation blanket along its circumferential direction; the outer end of each support plate extends outside the annular hollow floating tube, and a vertical plate is fixedly arranged on the bottom surface of the outer extension end, and a plurality of hooks are fixedly arranged on the inner end surface of the vertical plate at intervals along its height direction; The outer part of the plastic fixed cylinder is sleeved with a lifting net cylinder, the bottom of the net cylinder is closed, the upper end of the net cylinder is sleeved on the outer part of the plastic fixed cylinder, and a plurality of steel wires corresponding to the vertical plates are welded on the outer cylindrical surface of the upper end of the net cylinder and along its circumferential direction, and the other end of each steel wire is fixed with a ring, which is sleeved on the hook at the lowest layer of the vertical plate, so as to hang the net cylinder; A lower vegetation blanket is fixedly arranged on the top surface of the closed end of the net tube, on which submerged plants are planted, and shellfish and gravel are also placed on the top surface of the lower vegetation blanket; a plurality of circles of fish exchange channels are arranged on the cylindrical surface of the net tube, and each fish exchange channel is connected to the inner cavity of the net tube.

[0007] The annular hollow floating tube is an annular PE tube.

[0008] The material of each support plate is plastic, and each support plate is fixed on the top surface of the annular hollow floating tube by strong glue.

[0009] The vertical plates are evenly distributed on the annular hollow floating tube.

[0010] The vertical spacing between every two adjacent hooks on the vertical plate is equal.

[0011] The fish exchange channel is rectangular or circular.

[0012] A fixing ring is fixed on the outer end surface of each vertical plate.

[0013] The invention has the following advantages: it replaces artificial algae fishing and algae removal using chemicals, can completely control algae pollution and eutrophication, and is highly adjustable. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 for Figure 1 The main view of Figure 3 for Figure 1 A top view of Figure 4 for Figure 3 AA section view; Figure 5 for Figure 1 Schematic diagram of removing the upper vegetation blanket; Figure 6 It is a connection diagram of the support plate, the vertical plate, the hook and the fixing ring; Figure 7 It is a schematic diagram of the connection between the annular hollow floating tube and each support plate; Figure 8 for Figure 7 A top view of Fig. 9 A schematic diagram of connecting multiple floating cages in parallel; Fig.10 for Fig. 9 A top view of Fig.11 This is a real picture of the present invention being connected in series and then thrown into the lake; In the figure: 1-annular hollow floating tube, 2-plastic fixing tube, 3-support plate, 4-upper vegetation blanket, 5-vertical board, 6-hook, 7-net tube, 8-steel wire, 9-ring, 10-lower vegetation blanket, 11-fish exchange channel, 12-fixing ring, 13-rope. DETAILED DESCRIPTION

[0015] The present invention is further described below in conjunction with the accompanying drawings, and the protection scope of the present invention is not limited to the following: like Figure 1 to Figure 8 As shown, a floating cage for purifying water quality based on the symbiosis of fish, shellfish and grass comprises an annular hollow float tube 1, and a plastic fixing tube 2 fixedly mounted on the outside of the annular hollow float tube 1, wherein the annular hollow float tube 1 is an annular PE tube, and the plastic fixing tube 2 extends downwardly below the annular hollow float tube 1, and a plurality of support plates 3 are fixedly arranged on the top surface of the annular hollow float tube 1 and spaced along its circumferential direction, and an upper vegetation blanket 4 is fixedly arranged on the plane surrounded by the top surface of each support plate 3, and a circle of floating plants is planted on the upper vegetation blanket 4 along its circumferential direction; the outer end portion of each support plate 3 extends outside the annular hollow float tube 1, and a vertical plate 5 is fixedly arranged on the bottom surface of the outer extension end, and a plurality of hooks 6 are fixedly arranged on the inner end surface of the vertical plate 5 and spaced along its height direction; a fixing ring 12 is fixedly arranged on the outer end surface of each vertical plate 5.

[0016] The outer part of the plastic fixed cylinder 2 is sleeved with a lifting net cylinder 7, the bottom of the net cylinder 7 is closed, and the upper end of the net cylinder 7 is sleeved on the outer part of the plastic fixed cylinder 2. A plurality of steel wires 8 corresponding to the vertical plates 5 are welded on the outer cylindrical surface of the upper end of the net cylinder 7 and along its circumferential direction. The other end of each steel wire 8 is fixed with a ring 9, which is sleeved on the hook 6 at the lowest layer on the vertical plate 5, so as to hang the net cylinder 7; A lower vegetation blanket 10 is fixedly arranged on the top surface of the closed end of the net tube 7, and submerged plants are planted on the lower vegetation blanket 10. Shellfish and gravel are also placed on the top surface of the lower vegetation blanket 10. A plurality of circles of fish exchange channels 11 are arranged on the cylindrical surface of the net tube 7, and the fish exchange channels 11 are rectangular or circular. Each fish exchange channel 11 is connected to the inner cavity of the net tube 7.

[0017] Each support plate 3 is made of plastic, and each support plate 3 is fixed on the top surface of the annular hollow floating tube 1 by strong glue. Each vertical plate 5 is evenly distributed on the annular hollow floating tube 1, and the vertical spacing between each two adjacent hooks 6 on the vertical plate 5 is equal.

[0018] The method of using the floating cage to purify the water quality of the lake is: S1. Multiple floating cages are installed in parallel. The specific operation steps are as follows: S11. On the shore, a worker ties one end of a rope 13 to any fixing ring 12 of a floating net box, and then ties the other end of the rope 13 to any fixing ring 12 of another floating net box, thereby installing the two floating net boxes; S12, repeat the operation of step S11 several times, and then multiple floating net boxes can be installed in parallel. Figure 9~Figure 10 As shown; S2. Workers load the floating cages connected in parallel onto a boat and use the boat to move all the floating cages to the lake surface. When the boat reaches an area with more algae, workers drop the floating cages connected in parallel into the lake one by one. Fig.11 As shown; after being deployed, the annular hollow floating tube 1 is suspended on the lake surface, and the floating plants on the upper vegetation blanket 4 are also suspended on the lake surface. At the same time, the net tube 7 is immersed below the lake surface, and the water passes through the mesh of the net tube 7 to submerge the shellfish and submerged plants; S3. After a period of time, the floating plants and submerged plants can not only fix carbon and release oxygen through photosynthesis, but also absorb nutrients such as nitrogen and phosphorus in the water body, thereby effectively inhibiting the excessive growth of algae. At the same time, shellfish ingest and assimilate nutrients such as nitrogen and phosphorus in the water body, thereby effectively inhibiting the excessive growth of algae. At the same time, herbivorous fish in the lake water pass through the fish exchange channel 11 and enter the net tube 7. The herbivorous fish ingest submerged plants and discharge feces to the submerged plants to ensure the growth of submerged plants, thereby ultimately achieving the control of algae pollution and eutrophication under the symbiotic conditions of fish, shellfish and grass, thereby achieving the purpose of purifying the water quality of the lake; S4. When the lake water is purified, workers can salvage each floating net cage onto the boat, and can also harvest herbivorous fish and grown shellfish in the net tube 7.

[0019] Among them, it can be seen from steps S1 to S3 that since multiple floating cages are distributed in parallel in the lake water, the area for purifying water quality is increased, so that algae pollution and eutrophication can be completely controlled to achieve the purpose of purifying the lake water quality. In addition, the floating cage replaces the traditional way of workers fishing for algae, thereby greatly saving the workers' work intensity. At the same time, the floating cage also replaces the use of chemicals to remove algae, but uses the symbiotic method of fish, shellfish and grass to inhibit algae, which will not cause secondary pollution to the environment and plays a good role in protecting the ecological environment.

[0020] The method of purifying shallow lake water is: S5, the worker takes off a ring 9 of the floating cage from the hook 6 of the lower layer, then lifts the ring 9 upwards and puts the ring 9 on the uppermost hook 6 on the vertical plate 5; S6. Repeat step S5 for several times to elevate the net tube 7 relative to the stationary annular hollow floating tube 1 to a certain height, thereby ensuring that after the entire floating net cage is dropped into the shallow lake water, the net tube 7 can be suspended in the shallow lake water, thereby achieving the goal of purifying the shallow lake water.

[0021] Among them, from steps S5 to S6, it can be known that the worker only needs to lift up each ring 9 on the outer cylindrical surface of the net tube 7, and then correspondingly put each ring 9 on the upper hook 6, so as to shorten the distance between the net tube 7 and the annular hollow floating tube 1, thereby ensuring that the net tube 7 can be suspended in the shallow lake water, so as to achieve the water quality purification of the shallow lake water. It can be seen that the floating net box can be applied to occasions of different water depths and has a more universal technical feature.

[0022] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A floating cage for purifying water based on the symbiosis of fish, shellfish and grass, characterized by: It comprises an annular hollow floating tube (1), a plastic fixing tube (2) fixedly mounted on the outside of the annular hollow floating tube (1), the plastic fixing tube (2) extending downwardly below the annular hollow floating tube (1), a plurality of support plates (3) fixedly mounted on the top surface of the annular hollow floating tube (1) and spaced along its circumferential direction, a layer of upper vegetation blanket (4) fixedly mounted on the plane surrounded by the top surface of each support plate (3), a circle of floating plants planted on the upper vegetation blanket (4) along its circumferential direction; the outer end of each support plate (3) extends outside the annular hollow floating tube (1), and a vertical plate (5) is fixedly mounted on the bottom surface of the outer extension end, and a plurality of hooks (6) are fixedly mounted on the inner end surface of the vertical plate (5) at intervals along its height direction; The plastic fixed cylinder (2) is sleeved with a liftable net cylinder (7) on the outside, the bottom of the net cylinder (7) is closed, the upper end of the net cylinder (7) is sleeved on the outside of the plastic fixed cylinder (2), a plurality of steel wires (8) corresponding to the vertical plates (5) are welded on the outer cylindrical surface of the upper end of the net cylinder (7) and along its circumferential direction, each steel wire (8) is fixedly provided with a collar (9) at the other end, and the collar (9) is sleeved on the hook (6) located at the bottom layer on the vertical plate (5), so as to suspend the net cylinder (7); A lower vegetation blanket (10) is fixedly provided on the top surface of the closed end of the net cylinder (7), submerged plants are planted on the lower vegetation blanket (10), and shellfish and gravel are also placed on the top surface of the lower vegetation blanket (10); a plurality of circles of fish exchange channels (11) are provided on the cylindrical surface of the net cylinder (7), and each fish exchange channel (11) is connected to the inner cavity of the net cylinder (7).

2. A floating cage for purifying water based on the symbiosis of fish, shellfish and grass according to claim 1, characterized in that: The annular hollow floating tube (1) is an annular PE tube.

3. A floating cage for purifying water based on the symbiosis of fish, shellfish and grass according to claim 2, characterized in that: The material of each support plate (3) is plastic, and each support plate (3) is fixed on the top surface of the annular hollow floating tube (1) by strong glue.

4. A floating cage for purifying water based on the symbiosis of fish, shellfish and grass according to claim 3, characterized in that: The vertical plates (5) are evenly distributed on the annular hollow floating tube (1).

5. A floating cage for purifying water based on the symbiosis of fish, shellfish and grass according to claim 4, characterized in that: The vertical spacing between every two adjacent hooks (6) on the vertical plate (5) is equal.

6. A floating cage for purifying water based on the symbiosis of fish, shellfish and grass according to claim 5, characterized in that: The fish exchange channel (11) is rectangular or circular.

7. A floating cage for purifying water based on the symbiosis of fish, shellfish and grass according to claim 6, characterized in that: A fixing ring (12) is fixedly provided on the outer end surface of each vertical plate (5).

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