A device for collecting the surface layer of a shallow water zone of plankton

Abstract

The utility model discloses a kind of plankton shallow water area surface layer collecting devices, it is related to aquatic biological resource investigation technical field, including collection frame, one end of the collection frame is provided with connecting frame, the one end of the connecting frame away from collection frame is provided with driving device, two rhombic floating plates one are fixedly connected with the two sides of the collection frame symmetry, two rhombic floating plates two are fixedly connected with the two sides of the driving device symmetry, the rhombic floating plate one and rhombic floating plate two are aligned in device longitudinal outside end face, the rhombic floating plate one and rhombic floating plate two are used to prevent plankton collection device from rolling over. The utility model is through nylon screen surface and silk cloth screen surface, the layered filtering mechanism of double-layer filter screen, through 200 μm nylon screen surface intercepts large plankton and floating object, avoids its interference micro sample. Through 50 μm silk cloth screen surface accurate retention small phytoplankton and protozoa.

Description

Technical Field

[0001] This utility model relates to the field of aquatic biological resource survey technology, and in particular to a device for collecting plankton from the surface of shallow water areas. Background Technology

[0002] Shallow surface collection of plankton is a fundamental technique in ecological research and aquatic environment monitoring. It aims to obtain plankton samples from the surface of water bodies to analyze their species, quantity, and distribution characteristics. This research studies plankton community structure, assesses aquatic ecological health, monitors water quality changes, and provides data support for fisheries resource management and environmental restoration. This method is simple to operate, low in cost, and is a commonly used tool in aquatic ecology research, providing crucial data for understanding the functions of aquatic ecosystems.

[0003] In existing plankton collection methods, large floating objects or fish may enter the collection device simultaneously. The contamination of the sample by large organisms or artificial floating objects directly alters the composition of the plankton. Furthermore, large organisms may obscure or damage smaller plankton, leading to identification errors. This necessitates additional time to separate large organisms from the plankton sample.

[0004] To address the issue of large floating objects or fish entering the plankton collection device simultaneously, a composite design with a dual-layer mesh filtration system is employed. The outer layer is a 200μm pore size nylon mesh to intercept large zooplankton, while the inner layer is a 50μm pore size silk fabric to retain small phytoplankton and protozoa. This dual-layer mesh filtration design provides an efficient and precise solution for plankton collection through optimized physical properties, purified ecological samples, improved equipment efficiency, and guaranteed data quality.

[0005] However, existing collection devices suffer from several drawbacks, including the tendency to capsize while floating on the water surface and the difficulty in replacing the double-layered mesh filter. Capsizing leads to the loss of collected planktonic samples, especially surface microorganisms, directly impacting data integrity. Furthermore, clogged or damaged mesh is difficult to replace quickly, resulting in decreased filtration efficiency. Utility Model Content

[0006] The purpose of this invention is to address the shortcomings of existing technologies by proposing a plankton surface collection device for shallow water areas, which solves the problem that large floating objects or fish may enter the collection device at the same time during plankton collection.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A surface planktonic collection device for shallow water areas includes a collection frame, a connecting frame at one end of the collection frame, and a driving device at the end of the connecting frame away from the collection frame. Two rhomboid floats (first type) are symmetrically fixed to both sides of the collection frame, and two rhomboid floats (second type) are symmetrically fixed to both sides of the driving device. The rhomboid floats (first and second types) are aligned at their longitudinal outer ends. The rhomboid floats (first and second types) prevent the device from tipping over during planktonic collection, thus ensuring that the surface planktonic organisms are not dispersed by the water flow and maintaining sample integrity.

[0009] As a further improvement of this utility model, the output end of the driving device is located on the side near the connecting frame, and a connecting rod is fixedly connected to the output end of the driving device. A suction fan is fixedly connected to the end of the connecting rod away from the driving device, and a rotating disk is fixedly connected to the outer surface of the connecting rod. The suction fan is located at the center of the inside of the connecting frame near the collection frame. The suction fan will generate suction on the water surface.

[0010] As a further improvement of this utility model, a rotating groove is formed inside the connecting frame on the side near the driving device, and the rotating disk is rotatably connected inside the rotating groove. A threaded tube is fixedly connected to the collecting frame on the side near the connecting frame, and a threaded groove is formed on the inner wall of the connecting frame on the side near the collecting frame. The threaded tube and the threaded groove are threadedly connected. This achieves the effect of quickly removing plankton.

[0011] As a further improvement of this utility model, two fixed magnetic rings are symmetrically fixedly connected inside the collection frame. A silk mesh surface is provided on the side of the fixed magnetic rings near the connecting frame, and a movable magnetic ring is provided on the side of the silk mesh surface near the connecting frame. Two hanging rings are symmetrically fixedly connected to the top side of the collection frame. This allows small phytoplankton and protozoa to be trapped through the silk mesh surface.

[0012] As a further improvement of this utility model, a nylon mesh is provided on the side of the fixed magnetic ring away from the connecting frame and away from the rhomboid float, and a movable magnetic ring is provided on the side of the nylon mesh away from the connecting frame. This allows large zooplankton to be intercepted through the nylon mesh.

[0013] Compared with the prior art, the advantages of this utility model are as follows:

[0014] 1. Utilizing a dual-layer filtration mechanism consisting of a nylon mesh and a silk mesh, the 200μm nylon mesh intercepts large zooplankton and floating debris, preventing them from interfering with micro-samples. The 50μm silk mesh precisely traps small phytoplankton and protozoa.

[0015] 2. The streamlined design of rhomboid floats one and two can disperse the impact force of water flow and reduce the direct force of wind and waves on the device. Moreover, the rhomboid angle between the floats and the water surface is 60°, which can effectively decompose the lateral and longitudinal impact forces of wind and waves. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0017] Figure 2 This is a three-dimensional structural diagram of the drive device, connecting rod, and suction fan in this utility model.

[0018] Figure 3 This is a cross-sectional view of the collection frame and the connecting frame in this utility model, as well as a three-dimensional structural diagram of their interior.

[0019] Figure 4 This utility model Figure 3 A schematic diagram of the three-dimensional structure from another angle.

[0020] Figure 5 This is a cross-sectional three-dimensional structural diagram of the collecting frame and the connecting frame in this utility model.

[0021] Figure 6 This is a cross-sectional three-dimensional structural diagram of the separated state of the collection frame and the connecting frame in this utility model.

[0022] In the diagram: 101, collection frame; 102, connecting frame; 103, rhomboid float one; 104, driving device; 105, rhomboid float two; 106, connecting rod; 107, rotating disk; 108, suction fan; 109, rotating groove; 110, threaded pipe; 111, threaded groove; 201, nylon mesh; 202, silk mesh; 203, movable magnetic ring one; 204, movable magnetic ring two; 205, fixed magnetic ring. Detailed Implementation

[0023] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0024] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0025] See attached document Figure 1 - Appendix Figure 6 A surface collection device for planktonic organisms in shallow water includes a collection frame 101, a connecting frame 102, a first rhomboid float 103, a second rhomboid float 105, a suction fan 108, a threaded pipe 110, a threaded groove 111, a nylon mesh 201, a silk mesh 202, a first movable magnetic ring 203, a second movable magnetic ring 204, and a fixed magnetic ring 205.

[0026] This embodiment takes the collection of planktonic organisms from the water surface as an example. In use, an unmanned surface vessel (USV) is connected to the hanging ring on the collection frame 101. The USV is used to control the steering and power source of the entire device. Since the above technical solution is prior art, it will not be described in detail here. At this time, the rhomboid float plates 103 and 105, fixed to both sides of the collection frame 101 and the drive device 104, will float on the water surface. The streamlined rhomboid design of the float plates 103 and 105 reduces the direct impact of wind and waves, improving their resistance to wind and waves. The streamlined design of the rhomboid float plates can disperse the impact force of the water flow, reducing the direct force of wind and waves on the device. Furthermore, the rhomboid angle between the float plate and the water surface is 60°, which can effectively decompose the lateral and longitudinal impact forces of wind and waves.

[0027] Once the device is in place, a diesel generator or battery is installed on the unmanned surface vessel (USV). The diesel engine (or battery) on the USV then starts the drive unit 104, which in turn drives the suction fan 108 to rotate via the connecting rod 106. The rotating suction fan 108 generates negative pressure, drawing water through a double-layer filter. The water first passes through the nylon mesh 201, where large organisms are intercepted. Once the water reaches the silk mesh 202, small phytoplankton and protozoa are trapped, achieving a combined collection effect of the double-layer filter. The stratified filtration mechanism of the double-layer filter uses the 200μm nylon mesh 201 to intercept large zooplankton and floating debris, preventing them from interfering with micro-samples. The 50μm silk mesh 202 precisely traps small phytoplankton and protozoa. Plastic waste, industrial waste, and other floating debris are intercepted by the nylon mesh 201, reducing the risk of heavy metals, petroleum, and other pollutants entering the inner sample layer.

[0028] After plankton collection is complete, the collection frame 101 is removed via the threaded connection of the threaded tube 110 and the threaded groove 111. After removal, the movable magnetic ring 204 and the fixed magnetic ring 205 are attracted to each other through opposite magnetic poles, forming a detachable sealed connection. Disassembly is achieved by applying axial tension to overcome the magnetic force, thus quickly removing the plankton. Furthermore, the magnetic properties of the magnet allow the movable magnetic rings 203 and 204 to be removed. This enables quick replacement of the nylon mesh 201 and silk mesh 202 when damaged. To replace the nylon mesh 201 and silk mesh 202, the old mesh is removed by pulling out the movable magnetic ring 203, the edge of the new mesh is embedded into the groove of the fixed magnetic ring 205, and then the movable magnetic ring 203 is attracted and pressed firmly. The movable magnetic ring 1 203 and movable magnetic ring 2 204 can be quickly disassembled using magnets. No complicated tools are required, and the sample can be removed in 10 seconds with one hand, improving efficiency by 80%.

[0029] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A surface collection device for plankton in shallow water areas, comprising a collection frame (101), characterized in that, A connecting frame (102) is provided at one end of the collection frame (101), and a driving device (104) is provided at the end of the connecting frame (102) away from the collection frame (101). Two rhomboid float plates (103) are symmetrically fixedly connected to both sides of the collection frame (101), and two rhomboid float plates (105) are symmetrically fixedly connected to both sides of the driving device (104). The rhomboid float plates (103) and (105) are aligned at the longitudinal outer end faces of the device. The rhomboid float plates (103) and (105) are used to prevent the device from tipping over during the collection of plankton.

2. The plankton shallow water surface collection device according to claim 1, characterized in that, The output end of the drive device (104) is located on the side close to the connecting frame (102). A connecting rod (106) is fixedly connected to the output end of the drive device (104). A suction fan (108) is fixedly connected to the end of the connecting rod (106) away from the drive device (104). A rotating disk (107) is fixedly connected to the outer surface of the connecting rod (106). The suction fan (108) is located at the center inside the connecting frame (102) on the side close to the collection frame (101).

3. The plankton shallow water surface collection device according to claim 2, characterized in that, The connecting frame (102) has a rotating groove (109) on the side near the driving device (104). The rotating disk (107) is rotatably connected inside the rotating groove (109). The collecting frame (101) has a threaded tube (110) fixedly connected on the side near the connecting frame (102). The inner wall of the connecting frame (102) near the collecting frame (101) has a threaded groove (111). The threaded tube (110) and the threaded groove (111) are threadedly connected.

4. The plankton shallow water surface collection device according to claim 1, characterized in that, The collection frame (101) has two fixed magnetic rings (205) symmetrically fixed inside. Near the connecting frame (102), the fixed magnetic rings (205) are provided with a silk cloth mesh (202) on the side near the connecting frame (102). The silk cloth mesh (202) is provided with a movable magnetic ring (204) on the side near the connecting frame (102). The top side of the collection frame (101) has two hanging rings symmetrically fixed.

5. A plankton surface collection device in shallow water according to claim 4, characterized in that, A nylon mesh (201) is provided on the side of the fixed magnetic ring (205) away from the connecting frame (102) and away from the rhomboid floating plate (103). A movable magnetic ring (203) is provided on the side of the nylon mesh (201) away from the connecting frame (102).

Images