Portable rapid benthonic animal screening device

Abstract

The invention discloses a portable rapid benthonic animal screening device which comprises a screen cover. A cover body of the screen cover is arranged to be of a hinged split structure, an outer shell is installed on the outer portion of the cover body of the screen cover in a sleeving manner, and a shell body of the outer shell is also arranged to be of a hinged split structure in cooperation with the screen cover. The cover body of the screen cover and the inner wall of the outer shell are arranged in a spaced manner, a rocker is fixedly connected to one end of the cover body of the screen cover, a rotating shaft of the rocker penetrates through the outer shell, a sealing bearing is installed at the joint of the rotating shaft of the rocker and the outer shell, a water guide pipe is inlaid to the middle of the screen cover and the middle of the outer shell in a penetrating manner, the outlet end of the water guide pipe is arranged in the screen cover, the feeding end of the water guide pipe is arranged at the top of the outer shell, and a drainage pipe is mounted at the bottom of the shell body of the outer shell in a communication manner. A screen barrel is rotatably inlaid in the outer shell, the water guide pipe extending into the screen barrel is designed to be used for rapid feeding, the drainage pipe is designed on the outer shell to discharge impurities outwards, the screening speed is high, collected samples are complete, and use is convenient.

Description

technical field [0001] The invention relates to the technical field of hydrology, in particular to a portable fast benthic sifter. Background technique [0002] Benthic animals refer to the aquatic fauna living at the bottom of the water body for all or most of their life history, most of them are invertebrates, which is a complex ecological group and an important part of the aquatic ecosystem animal community. According to its size, it can be divided into macrobenthic animals and small benthic animals. Most benthic animals live in the bottom mud for a long time, and have the characteristics of strong regionality and weak migration ability. They usually have little ability to avoid environmental pollution and changes, and the destruction and reconstruction of their communities take a relatively long time; and most species of individuals Larger and easy to identify; at the same time, different species of benthic animals have different adaptability to environmental conditions...

AI Technical Summary

Problems solved by technology

[0003] However, these devices have the following problems: the process of elutriating the sediment is laborious and the residues are messy, which is not conducive to the selection and collection of benthic animals; Satisfy the needs of the samplers; moreover, the filter screen is prone to residual sediment, which is not easy to wash clean, low in efficiency, and easy to damage benthic animals; and some existing screening devices are more complicated in design and are not easy to carry to the field for use

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