A flotation structure and rice seedling selection device

Abstract

The invention relates to a flotation structure and a device for raising seedlings of rice. The flotation structure includes a base and a recovery tank installed on the base. A flotation chamber is arranged on the side of the recovery tank far away from the base. , one side of the flotation chamber communicates with a flow chamber, and the side of the flow chamber away from the flotation chamber communicates with the recovery chamber through a circulation assembly; the side of the flotation chamber away from the flow chamber A filter assembly is provided, and the side of the filter assembly away from the recovery tank is provided with a conduit communicating with the inside of the flotation chamber, and a discharge port is also provided on the flotation chamber; the inside of the flotation chamber A rotating member driven by a driving mechanism is installed for rotation, and a flotation flow channel is arranged on the rotating member, and a one-way flow chamber is arranged on a side perpendicular to the flotation flow channel. This structure effectively avoids the problem that some unqualified seeds cannot be screened out due to a large number of seeds entering the flotation chamber at the same time, which affects the flotation effect.

Description

technical field [0001] The invention relates to the technical field related to agriculture, in particular to a flotation structure and a rice seedling selection device. Background technique [0002] Paddy rice is a cereal crop belonging to Oryza genus, and the representative species is rice. Rice is native to China and India, and was cultivated by the ancestors of the Yangtze River Basin in China 7,000 years ago. [0003] In the process of rice seedling selection, it is generally necessary to remove unqualified seeds first to improve the breeding effect. The current screening of seeds is generally carried out by flotation, but the existing seed flotation devices generally directly remove a large number of The seeds are placed in the water for selection, which will easily make some unqualified seeds unable to float up, resulting in poor flotation effect. [0004] The publication number is CN110961239A, and the invention patent named "a seed screening machine based on agricu...

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Problems solved by technology

[0003] In the process of rice seedling selection, it is generally necessary to remove unqualified seeds first to improve the breeding effect. The current screening of seeds is generally carried out by flotation, but the existing seed flotation devices generally directly remove a large number of The seeds are placed in the water for selection, it is easy to make some unqualified seeds unable to float up, resulting in poor flotation effect

[0004] The publication number is CN110961239A, and the invention patent named "a seed screening machine based on agricultural big data" uses a stirring rod to stir the seeds on the upper layer of the middle plate to make the unqualified seeds float on the water surface, and pushes the filter box through the push rod to remove the upper layer. The unqualified seeds are intercepted, and the lower layer is released to get qualified seeds. The disadvantage is that: a large number of seeds are on the upper layer of the middle plate, and the mixing is uneven when stirred by the stirring rod, and unqualified seeds will be mixed in the sinking qualified seeds, and the screening is not accurate. , the filter box intercepts the unqualified seeds in the upper layer horizontally, it cannot be accurately intercepted, and it will happen that the unqualified seeds cannot be intercepted, and the unqualified seeds that have not been intercepted will fall into the storage box together when the middle plate does not intercept the seeds and water. Among the qualified seeds, the screening quality is not high

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