Water body microplastic classified collection device

Abstract

The invention provides a water body microplastic classified collection device, and belongs to the technical field of microplastic collection. The water body microplastic classified collection device comprises a tube body, a motor, a round tube lower part, a support rod, a conical upper part and a plurality of water storage mechanisms, wherein an installing cavity is formed in the tube body; the motor is arranged in the installing cavity through a support frame; a lower cavity is formed in the round tube lower part; the bottom of the round tube lower part is fixedly arranged on an output shaftof the motor; a second square pipe is vertically and fixedly arranged at the bottom of the lower cavity; the lower end of the support rod is inserted and arranged in the second square pipe; the support rod is sequentially and fixedly provided with a first filter screen, a second filter screen and a third filter screen from top to bottom; an upper cavity is formed inside the conical upper part; thelower end of the conical upper part is detachably connected onto the round tube lower part; and when the round tube lower part rotates, centrifugal force is generated so that water entering the uppercavity sequentially passes through the first filter screen, the second filter screen and the third filter screen to flow into the water storage mechanism. The water body microplastic classified collection device can be used for fast separating microplastic particles from a water body, and has a simple structure.

Description

Technical field [0001] The invention belongs to the technical field of microplastics collection and relates to a water body microplastics classification collection device. Background technique [0002] Microplastics refer to plastic particles and textile fibers with a small particle size. At present, there is no general consensus on the size of microplastics in academia, and plastic particles with a particle size of less than 5mm are generally considered to be microplastics. [0003] At present, the devices and methods for collecting microplastics in water samples have not been standardized. Generally, ship trawl sampling is used, or a large number of water samples are collected and analyzed in a laboratory after filtration. Due to ship trawl sampling, the water sample volume cannot be accurately calculated, and the sample cannot be completely exported after sampling, which is inconvenient for analysis. The existing fixed-point sampling method causes the water body to be sequenti...

AI Technical Summary

Problems solved by technology

Due to the ship trawl sampling, the volume of the water sample cannot be accurately calculated, and the sample cannot be completely exported after sampling, which is inconvenient for analysis

The existing fixed-point sampling method makes the water body sequentially filter through multi-layer filters, and the filtration efficiency is low.

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