A mobile aeration device for the bottom water body of a culture pond

Abstract

The invention discloses a mobile oxygenation device for a bottom water body of an aquaculture pond. The oxygenation device comprises a solar power assembly, an upper layer water body extraction assembly, a first floating body and a second floating body, wherein the first floating body is used for bearing the solar power assembly; the second floating body is used for bearing the upper layer water body extraction assembly; the first floating body and the second floating body are connected integrally through a connecting rod; the solar power assembly comprises a solar power generation plate, a solar power source, a guide bracket and a driving motor; and the upper layer water body extraction assembly comprises an upper layer water body extraction barrel and propeller blades. With the adoption of the device, the oxygen production capability of phytoplankton in the pond is used, and supersaturated dissolved oxygen produced by the phytoplankton on the water body surface of the pond at noon is extracted to the anoxic water body at the bottom of the pond and stored, so that the dissolved oxygen content in the whole pond is significantly increased, and problems of oxygen deficiency at the bottom of a traditional pond, water quality stratification and previous insufficient utilization of the oxygen produced by the phytoplankton are solved. The solar plate is used as a power source, and the device is independent of external power sources and electric wires, so that the device can be used normally in unpowered regions.

Description

technical field [0001] The invention relates to the field of pond cultivation, in particular to the oxygenation of the water body of the cultivation pond. Background technique [0002] Studies have shown that the existing pond aerators, including water wheel aerators, impeller aerators and jet flow aerators, etc., mainly rely on external power supplies and wires, and rely on mechanical stirring or blast aeration to make the aerators in the air Dissolved oxygen enters the water body to aerate the water, thus improving the pond water quality. [0003] However, the dissolved oxygen produced by this part only accounts for 10-30% of the dissolved oxygen source of the whole pond, which accounts for a small proportion, high energy consumption, and its use is limited in areas without electricity. [0004] At the same time, neither the water wheel, the impeller nor the jet aerator used at the bottom of the pond can fully mix the upper and lower water bodies, especially in the pond i...

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Problems solved by technology

[0003] However, the dissolved oxygen produced by this part only accounts for 10-30% of the dissolved oxygen source of the whole pond, which is a small proportion, high energy consumption, and its use is limited in areas without electricity

[0004] At the same time, neither the water wheel, the impeller nor the jet aerator used at the bottom of the pond can fully mix the upper and lower water bodies, especially in the pond in summer due to the serious stratification of dissolved oxygen and water temperature, resulting in severe hypoxia at the bottom of the pond question

The lack of oxygen at the bottom seriously affects the normal growth of cultured organisms such as fish and shrimp. At the same time, the lack of oxygen at the bottom will also cause the deposition of organic matter to decompose and produce harmful gases such as hydrogen sulfide under anoxic conditions, resulting in a large number of fish and shrimp deaths.

[0005] The source of dissolved oxygen in the pond, the oxygen produced by phytoplankton in the upper water body is the most important source of dissolved oxygen, accounting for more than 60-80% of the source of dissolved oxygen in the whole pond. In the case of strong light at noon, dissolved oxygen even It will be in a supersaturated state, and this part of supersaturated dissolved oxygen is often not used in time, and escapes into the air, resulting in a waste of resources. Low, dissolved oxygen content exists serious water quality stratification phenomenon

[0006] In addition, the existing methods of increasing oxygen by aerators are all fixed-point aeration methods. The aerator is fixed at a certain position in the aquaculture pond. One aerator, the investment in facilities is relatively large, which has caused a large burden on fishermen

[0007] Application No. 200420042939.6 patent "a new adjustable pond aeration machine" discloses an aeration machine, which directly mixes the air above the water surface to the bottom of the aquaculture water body, and needs the oxygen in the air to be absorbed The lower water body can be used after further absorption. Due to the low dissolution rate of oxygen in the lower water body, there is also the problem of low oxygen utilization efficiency. In addition, because the propeller of the device is close to the bottom of the pond, it is easy to cause the pond to "flood the bottom" and affect the breeding. body growth

In addition, the DC motor of this device relies on external power supply and wires for power supply, which also does not solve the problem of power supply. Finally, the device is fixed and floating on the water surface at a certain position in the pond, and its oxygenation range is still limited.

[0008] Therefore, existing pond oxygenation methods, especially pond oxygenation machinery, still have a big problem in making full use of the oxygenation capacity of pond phytoplankton, solving the power supply and realizing the utilization of an aerator for the whole pond oxygenation. room for improvement

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