A shallow water plankton sampling device

Abstract

The invention discloses a shallow water plankton sampling device, comprising a collection part and a boat base, the collection part comprising a support rod, an active collar, a buckle, a pulling rope, an inlet pipe and a depth sounder, the boat base comprising an intelligent water pump, an outlet pipe, a net and a collection pipe; the active collar is sleeved on the support rod between two buckles, and the active collar is provided with a jacket I for clamping the inlet pipe; one end of the pulling rope is connected to the active collar, and the other end is connected to the intelligent water pump through a pulley steering arranged on the upper part of the support rod, the intelligent water pump comprises a water pump body, a traction machine and a control box, the traction machine is connected to one end of the pulling rope, and the water pump body and the traction machine are both electrically connected to the control box; the depth sounder is arranged at the water inlet of the water inlet pipe, and the depth sounder is connected to the control box of the intelligent water pump through a cable; the outlet pipe, the net and the collection pipe are connected in sequence, a screen silk is arranged on the collection pipe, and a valve is arranged at the water outlet of the collection pipe. The invention has a simple structure and is easy to operate, and is suitable for shallow sea areas with a small water depth.

Description

Technical Field

[0001] The invention belongs to the technical field of marine ecological environment monitoring, and in particular relates to a shallow water plankton sampling device for the ocean. Background Art

[0002] Plankton plays a fundamental role in the marine ecosystem and is an important monitoring and analysis project in marine monitoring and scientific research. Plankton includes phytoplankton, zooplankton, etc. Plankton monitoring has been widely used in modern marine management at home and abroad. The depth of the ocean varies greatly from nearshore waters to the open ocean. In nearshore waters, there is also a large depth span from 0 meters to tens of meters. When sampling plankton in nearshore waters, shallow-water plankton nets are currently mainly used, and columnar water samples are collected by vertical trawling from the seabed to the sea surface. Since the length of shallow-water plankton nets is generally around 1.5 meters, coupled with components such as fixed ropes at the top of the net mouth and weight devices at the bottom, shallow-water plankton net collection devices are often more than 2.0 meters long. In order to prevent the seabed from being touched during sampling, general sampling specifications require that the weight at the bottom of the net be more than 0.5 meters from the bottom. In addition, for representative sampling, the depth of the water column collected by vertical trawling should be at least more than half of the water column. Therefore, vertical trawling sampling of shallow-water plankton nets is more suitable when the water depth is 5 to tens of meters, but vertical trawling is not effective in shallow waters within 5 meters, and cannot be used when the water depth is less than 2.5 meters. my country has a well-developed continental shelf. In many sea areas such as the Bohai Sea, the East China Sea and the Beibu Gulf, the shoals are gentle. At low tide, the coastal waters with a depth of less than 5 meters can extend several kilometers or even more than ten kilometers into the sea. The water depth of many small and medium-sized bays near the coast is also shallow. The coastal waters near the coastline and the sea-land transition zone are the areas most directly and significantly affected by human activities in coastal areas, and many routine monitoring and scientific research are focused on this. However, there is currently no effective and accurate tool for sampling plankton in these seas. Therefore, designing a plankton sampling device for water depths below 5 meters is of great significance for marine monitoring and marine scientific research. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a shallow water marine plankton sampling device, which has a simple structure, is easy to operate, and is suitable for shallow sea areas with relatively small water depths.

[0004] The technical solution adopted by the present invention is: to provide a shallow water plankton sampling device, including a collection part and a boat base, the collection part includes a support rod, a movable ring, a buckle, a pulling rope, a water inlet pipe and a depth sounder, and the boat base includes an intelligent water pump, a water outlet pipe, a net and a collection pipe; the lower end of the support rod is provided with a base, the upper end is provided with a level, the buckle is provided with two, which are respectively arranged at the upper and lower parts of the support rod, the buckle is loosened and slid or clamped and fixed on the support rod, the movable ring is movably connected to the support rod between the two buckles, and the movable ring is provided with a clamping sleeve I for clamping the water inlet pipe; one end of the pulling rope is connected to the movable ring, and the other end is connected to the upper end of the support rod. The pulley steering is connected to the intelligent water pump, which includes a water pump body, a traction machine and a control box. The inlet end of the water pump body is connected to the water inlet pipe, and the outlet end is connected to the water outlet pipe. The traction machine is connected to one end of the pulling rope, and the water pump body and the traction machine are electrically connected to the control box; the water inlet pipe is arranged on the side of the support rod, and a horizontal water inlet is arranged at the lower end of the water inlet pipe, and the other end is connected to the inlet end of the water pump body; the depth sounder is arranged at the water inlet of the water inlet pipe, and the depth sounder is connected to the control box of the intelligent water pump through a cable; the water outlet pipe, the net and the collecting pipe are connected in sequence, and a sieve silk is arranged on the collecting pipe. Nets and sieve silks with different apertures are selected according to different sampling purposes, and a valve is provided at the water outlet of the collecting pipe.

[0005] Preferably, the support rod is a telescopic rod, and a scale is provided on the support rod.

[0006] Preferably, the water inlet is trumpet-shaped.

[0007] Preferably, the buckle on the upper part of the support rod is provided with a jacket II for clamping the water inlet pipe.

[0008] After adopting the above structure, the advantages of the shallow water plankton sampling device of the present invention compared with the prior art are: the sampling device can collect plankton in shallow water areas with a water depth of less than 5 meters, especially less than 2.5 meters, and the amount of water to be collected can be accurately measured or controlled through an intelligent water pump. The structure is simple and easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram of the structure of the present invention.

[0010] Figure 2 It is a schematic diagram of the structure of the intelligent water pump of the present invention.

[0011] Figure 3 The working diagram of the collection unit of the present invention is shown in FIG. Figure 1 .

[0012] Figure 4 The working diagram of the collection unit of the present invention is shown in FIG. Figure 2 .

[0013] In the figure, 1. Collection part, 1.1. Support rod, 1.1.1. Base, 1.1.2. Level, 1.2. Movable ring, 1.3. Buckle, 1.4. Pull rope, 1.5. Water inlet pipe, 1.6. Water inlet, 1.7. Depth sounder, 2. Boat base, 2.1. Intelligent water pump, 2.2. Water outlet pipe, 2.3. Net, 2.4. Net bottom pipe, 2.4.1. Screen silk, 2.4.2. Water outlet. DETAILED DESCRIPTION

[0014] The present invention is described in detail below with reference to the accompanying drawings and embodiments.

[0015] like Figure 1 to Figure 4As shown, a shallow water plankton sampling device of the present invention comprises a collecting part 1 and a boat base 2, the collecting part 1 comprises a support rod 1.1, a movable ring 1.2, a buckle 1.3, a pulling rope 1.4, a water inlet pipe 1.5 and a depth sounder 1.7, the boat base comprises an intelligent water pump 2.1, a water outlet pipe 2.2, a net 2.3 and a collecting pipe 2.4, the support rod 1.1 is a long rod, which is a telescopic rod, and a scale is set on the support rod 1.1, which can be used to measure the depth of the water, and the material can be a hard and light material such as aluminum alloy or carbon fiber, the lower end of the support rod 1.1 is provided with a base 1.1.1, and the upper end is provided with a level 1.1.2, and there are two buckles 1.3, which are respectively arranged at the upper and lower parts of the support rod 1.1, that is, one is arranged below the level 1.1.2, and the other is arranged above the base 1.1.1, and the buckle 1.3 is released to slide or clamped to be fastened It is fixed on the support rod 1.1, that is, the buckle 1.3 is used to adjust and fix the support rod 1.1 at different heights, and is used to limit the movable ring 1.2. The movable ring 1.2 is movably connected to the support rod 1.1 between the two buckles 1.3. The movable ring 1.2 is provided with a jacket I for clamping the water inlet pipe 1.5. One end of the pulling rope 1.4 is connected to the movable ring 1.2, and the other end is connected to the intelligent water pump 2.1 through a pulley steering wheel arranged on the upper part of the support rod 1.1. The intelligent water pump 2.1 includes a water pump body 2.1.3, a traction machine 2.1.2 and a control box 2.1.1. The inlet end of the water pump body 2.1.3 is connected to the water inlet pipe 1.5, and the outlet end is connected to the water outlet pipe 2.2. The traction machine 2.1.2 is connected to one end of the traction rope 1.4, and the water pump body 2.1.3 and the traction machine 2.1.2 are both electrically connected to the control box 2.1.1. The water inlet pipe 1.5 is a hollow hose made of a rubber hose. The water inlet pipe 1.5 is arranged on the side of the support rod 1.1. One end of the water inlet pipe 1.5 extends to the lower part of the support rod 1.1 and is provided with a horizontal water inlet 1.6. The other end is connected to the inlet end of the water pump body 2.1.3 of the intelligent water pump 2.1. The water inlet 1.6 is trumpet-shaped. The depth sounder 1.7 is located at the water inlet 1.6 of the water inlet pipe 1.5. The depth sounder 1.7 is connected to the control box 2.1.1 of the intelligent water pump 2.1 through a cable. The water outlet pipe 2.2, the net 2.3 and the collection pipe 2.4 are connected in sequence, that is, one end of the water outlet pipe 2.2 is connected to the outlet end of the water pump body 2.1.3, and the other end is connected to one end of the net 2.3. The other end of the net 2.3 is connected to the collection pipe 2.4. A screen silk 2.4.1 is provided on the wall of the collection pipe 2.4, and its water outlet 2.4.2 is provided with a valve. Choose nets and sieves with different apertures according to the sampling purpose. For example, when collecting phytoplankton, choose JP80 or nets and sieves with the same aperture.

[0016] The working mode of the intelligent water pump 2.1 of the present invention is to set the amount of water to be collected, and the water is pumped into the water outlet pipe 2.2 from the inlet end through the water inlet pipe body 2.1.3. The water depth data transmitted back by the depth sounder 1.7 is used to calculate the speed at which the water inlet 1.6 needs to be lifted. According to the calculated data, the control box 2.1.1 controls the traction machine 2.1.2 to drive the pulling rope 1.4 to lift the water inlet 1.6 of the water inlet pipe 1.5. When the depth sounder 1.7 floats to the surface, the pulling rope 1.4 is stopped from being retracted and the operation of the intelligent water pump 2.1 is stopped at the same time.

[0017] When the present invention is implemented, first move the two buckles 1.3 on the support rod 1.1 to the upper part of the support rod 1.1, then insert the support rod 1.1 into the sea, and the base 1.1.1 touches the seabed. After taking it out, observe the siltation depth of the seabed sediment, and adjust the position of the lower buckle 1.3 to ensure that the water inlet 1.6 does not touch the seabed. After adjusting the buckle 1.3, put the movable ring 1.2 and the water inlet pipe 1.5 and water inlet 1.6 clamped by it into the sea, and adjust the support rod 1.1 to keep it vertical through the level 1.1.2 at the upper end of the support rod 1.1. Set the amount of water to be collected. For example, if the depth data sent back by the depth sounder 1.7 from the intelligent water pump 2.1 on the base 2 is 2.0m, 20L of water needs to be collected, and the pumping rate of the intelligent water pump 2.1 is 10L / min, then the lifting rate of the pulling rope 1.4 is 1m / min. Start the smart water pump 2.1, pull the rope 1.4 up at a rate of 1m / min, and at the same time, the smart water pump 2.1 pumps water from the water inlet 1.6 through the water inlet pipe 1.5 to the smart water pump 2.1 to the water outlet pipe 2.2 to the net 2.3 to the collection pipe 2.4. When the pull rope 1.4 pulls the water inlet 1.6 out of the water, the depth of the depth sounder 1.7 is 0m, and the smart water pump 2.1 stops after pumping 20L of water. The water flows through the net 2.3, and the plankton enters the collection pipe 2.4 with the water flow. The collected seawater flows out of the net 2.3 in large quantities. Rinse the net 2.3 and the bottom pipe 2.4 with water from the outside of the device, flush off the plankton that is partially attached to the net 2.3 and the sieve 2.4.1, and then open the water outlet 2.4.2 and put the sample into the sample bottle. Close the water outlet 2.4.2, repeat the flushing several times, bottle, and complete the sampling work.

[0018] The embodiments of the present invention are described in detail above, but the contents described are only preferred embodiments of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of this patent.

Claims

1. A shallow water plankton sampling device, characterized in that: It includes a collection part and a boat base. The collection part includes a support rod, a movable ring, a buckle, a pulling rope, a water inlet pipe and a depth sounder. The boat base includes an intelligent water pump, a water outlet pipe, a net and a collection pipe. The lower end of the support rod is provided with a base, and the upper end is provided with a level. There are two buckles, which are respectively arranged at the upper and lower parts of the support rod. The buckle is loosened and slid or clamped and fixed on the support rod. The movable ring is sleeved on the support rod between the two buckles. The movable ring is provided with a clamping sleeve I for clamping the water inlet pipe. One end of the pulling rope is connected to the movable ring, and the other end is connected to the intelligent water pump through a pulley steering wheel arranged on the upper part of the support rod. The intelligent water pump includes a water pump body, a traction machine and Control box, the inlet end of the water pump body is connected to the water inlet pipe, the outlet end is connected to the water outlet pipe, the traction machine is connected to one end of the pulling rope, the water pump body and the traction machine are electrically connected to the control box; the water inlet pipe is arranged on the side of the support rod, the lower end of the water inlet pipe is provided with a horizontal water inlet, and the other end is connected to the inlet end of the water pump body; the depth sounder is arranged at the water inlet of the water inlet pipe, and the depth sounder is connected to the control box of the intelligent water pump through a cable; the water outlet pipe, the net and the collecting pipe are connected in sequence, the collecting pipe is provided with a sieve silk, and the water outlet of the collecting pipe is provided with a valve, the support rod is a telescopic rod, the support rod is provided with a scale, and the buckle on the upper part of the support rod is provided with a jacket II for clamping the water inlet pipe.

2. The shallow water plankton sampling device according to claim 1, characterized in that: The water inlet is in a trumpet shape.

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