United collection device and method for sediments and plankton in deep layer and shallow layer transition water area

A plankton and collection device technology, applied in the direction of sampling devices, etc., can solve the problems of sample overflow and inability to guarantee the sample collection effect, and achieve the effects of easy production, shortening sample collection time, and saving sampling time

Active Publication Date: 2015-09-23
PEARL RIVER HYDRAULIC RES INST OF PEARL RIVER WATER RESOURCES COMMISSION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, most of the tools used to collect plankton in shallow waters are simple and portable barrel-type conical plankton collection nets, which are light in weight and can be collected by a single person by pulling the rope with force. Under the impact of the water flow in the junction area, the sampling net is light in weight, prone to tilting and shaking, and it is easy to cause sample overflow at the collection port, which cannot guarantee a good sample collection effect

Method used

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  • United collection device and method for sediments and plankton in deep layer and shallow layer transition water area
  • United collection device and method for sediments and plankton in deep layer and shallow layer transition water area
  • United collection device and method for sediments and plankton in deep layer and shallow layer transition water area

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Such as figure 1 Shown is a schematic diagram of a collection device suitable for collecting sediments in transitional waters of deep and shallow waters. The sediment collection device includes 4 to 8 steel pipes 1, supports 2 and solid steel columns 3, the steel pipes 1 and the solid steel columns 3 are connected together by the supports 2, and the steel pipes 1 and the solid steel columns 3 are welded on the supports 2 ; The bracket 2 includes a plurality of connecting bars, one end of the plurality of connecting bars is connected to the solid steel column 3; The top of the steel pipe 1 is designed as an oblique cut surface, which can increase the cutting strength of the deposit; as figure 2 As shown, there is a spring lock 4 on the side of the steel pipe 1, the inside of the steel pipe 1 is hollow, and a moving groove is provided in the axial direction on the steel pipe 1, and a connecting end protrudes from the spring lock 4, and the connecting end Extending into...

Embodiment 2

[0041] Such as Figure 4 Shown is a schematic diagram of a plankton net suitable for use in conjunction with the sediment collection device in Example 1. The plankton net comprises a net body 10, a net circle 11, a regulating valve 12 and a stay rope 14 at the bottom. A net button 13 and the connecting ring 6 of the sediment collection device can be connected together on the net circle 11 to form a joint collection device. There is a perforation 15 on the mesh circle 11 that can be inserted into the stay cord 14, and the opening or closing of the mesh circle 11 can be controlled by using the tension stay cord 14. Regulating valve 12 can control sample taking.

Embodiment 3

[0043] Such as Figure 5Shown is a schematic diagram of a device suitable for joint collection of sediment and plankton in deep-shallow transitional waters. The combined collection device for sediment and plankton is formed by connecting the net buckle 13 on the net circle 11 and the connecting ring 6 together. Sampling personnel immerse the combined collection device into the water body through the pull rope 14 to collect samples. When the combined collection device is close to the bottom of the water body, the oblique section on the top of the sediment collection device cuts the bottom of the water to obtain sediment samples through the parallel pulling device; the plankton net is light in weight and can float up when entering the water body while following the sediment The pulling effect of the collection device and the load-bearing effect of the net body 10 on the gravity code 7 will not swing randomly, effectively preventing sample loss. The plankton net collects plankto...

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PUM

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Abstract

The invention discloses a united collection device and method for sediments and plankton in a deep layer and shallow layer transition water area. The united collection device comprises a sediment collecting device body and a plankton net. The sediment collecting device body comprises steel tubes, supports and a solid steel column. The steel tubes are connected with the solid steel column through the supports. The tops of the steel tubes are diagonal planes. The side face of each steel tube is provided with a spring lock catch, the spring lock catches are connected to adjusting steel sheets, and therefore sediments can be collected. The plankton net comprises a net body, a net ring, an adjusting valve and a pull rope. The sediment collection device body and the plankton net are connected through connection rings, so that the united collection device is formed, and collection of two kinds of samples is synchronously completed. The united collection device and method have the advantages that the structure is simple, manufacturing is easy, operating is convenient, interface disturbance is small, the sampling success rate is high, and labor and sampling time are saved. The united collection device and method are suitable for synchronous sampling of sediments and plankton in water areas such as a river, a lake, a reservoir and ocean and particularly suitable for collection of samples of sediments and plankton in a deep layer and shallow layer transition water area.

Description

technical field [0001] The invention belongs to the field of environmental monitoring, and in particular relates to a device and method for joint collection of sediments and plankton in deep and shallow transitional waters. Background technique [0002] At present, the sediment portable samplers that can be purchased in the market mainly include grab-type and column-type samplers, which are expensive and are easily damaged during on-site operation, especially for sediments in waters at the junction of deep and shallow layers. For collection of sediments, the use of portable grab-type, column samplers and mechanical tension deep-water sediment samplers with twisted ropes is not applicable. There are obvious disadvantages in the use of the grab sampler. Because it relies on its own weight to grab the bottom, under the action of buoyancy in the slightly deeper junction of the water area, it is difficult to close the mud sampler and cannot touch the bottom of the water area. If ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/10
Inventor 黑亮罗丹董延军孙育平杨燕婷朱小平
Owner PEARL RIVER HYDRAULIC RES INST OF PEARL RIVER WATER RESOURCES COMMISSION
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