Design and Hydrodynamic Performance Analysis of Airlift Sediment Removal Equipment for Seedling Fish Tanks
This study innovatively proposes a pipeline-type pneumatic lift sediment removal device for cleaning pollutants at the bottom of fish breeding tanks and conducts hydrodynamic characteristic analysis on its core component, the pneumatic lift pipeline structure, which consists of a horizontal circular...
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| Format: | Article |
| Language: | English |
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MDPI AG
2025-06-01
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| Series: | Journal of Marine Science and Engineering |
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| Online Access: | https://www.mdpi.com/2077-1312/13/7/1236 |
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| author | Yufei Zhang Andong Liu Chenglin Zhang Chongwu Guan Haigeng Zhang |
| author_facet | Yufei Zhang Andong Liu Chenglin Zhang Chongwu Guan Haigeng Zhang |
| author_sort | Yufei Zhang |
| collection | DOAJ |
| description | This study innovatively proposes a pipeline-type pneumatic lift sediment removal device for cleaning pollutants at the bottom of fish breeding tanks and conducts hydrodynamic characteristic analysis on its core component, the pneumatic lift pipeline structure, which consists of a horizontal circular tube with multiple micro-orifices at the bottom and an upward-inclined circular tube. The pipeline has an inner diameter of 20 mm and a vertical length of 1.2 m, with the orifice at one end of the horizontal tube connected to the gas supply line. During operation, compressed gas enters the horizontal tube, generating negative liquid pressure that draws solid–liquid mixtures from the tank bottom into the pipeline, while buoyant forces propel the gas–liquid–solid mixture upward for discharge through the outlet. Under a constant gas flow rate, numerical simulations investigated efficiency variations through three operational scenarios: ① different pipeline orifice diameters, ② varying orifice quantities and spacings, and ③ adjustable pipeline bottom clearance heights. The results indicate that in scenario ①, an orifice diameter of 4 mm demonstrated optimal efficiency; in scenario ②, the eight-orifice configuration achieved peak efficiency; and scenario ③ showed that the proper adjustment of the bottom clearance height enhances pneumatic efficiency, with maximum efficiency observed at a clearance of 10 mm between sediment suction pipe and tank bottom. |
| format | Article |
| id | doaj-art-bf2661e241994c7dbb16a4ab7fbb0b79 |
| institution | DOAJ |
| issn | 2077-1312 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Marine Science and Engineering |
| spelling | doaj-art-bf2661e241994c7dbb16a4ab7fbb0b792025-08-20T03:08:01ZengMDPI AGJournal of Marine Science and Engineering2077-13122025-06-01137123610.3390/jmse13071236Design and Hydrodynamic Performance Analysis of Airlift Sediment Removal Equipment for Seedling Fish TanksYufei Zhang0Andong Liu1Chenglin Zhang2Chongwu Guan3Haigeng Zhang4Fishery Machinery and Instrument Research Institute, Shanghai 200092, ChinaFishery Machinery and Instrument Research Institute, Shanghai 200092, ChinaFishery Machinery and Instrument Research Institute, Shanghai 200092, ChinaFishery Machinery and Instrument Research Institute, Shanghai 200092, ChinaFishery Machinery and Instrument Research Institute, Shanghai 200092, ChinaThis study innovatively proposes a pipeline-type pneumatic lift sediment removal device for cleaning pollutants at the bottom of fish breeding tanks and conducts hydrodynamic characteristic analysis on its core component, the pneumatic lift pipeline structure, which consists of a horizontal circular tube with multiple micro-orifices at the bottom and an upward-inclined circular tube. The pipeline has an inner diameter of 20 mm and a vertical length of 1.2 m, with the orifice at one end of the horizontal tube connected to the gas supply line. During operation, compressed gas enters the horizontal tube, generating negative liquid pressure that draws solid–liquid mixtures from the tank bottom into the pipeline, while buoyant forces propel the gas–liquid–solid mixture upward for discharge through the outlet. Under a constant gas flow rate, numerical simulations investigated efficiency variations through three operational scenarios: ① different pipeline orifice diameters, ② varying orifice quantities and spacings, and ③ adjustable pipeline bottom clearance heights. The results indicate that in scenario ①, an orifice diameter of 4 mm demonstrated optimal efficiency; in scenario ②, the eight-orifice configuration achieved peak efficiency; and scenario ③ showed that the proper adjustment of the bottom clearance height enhances pneumatic efficiency, with maximum efficiency observed at a clearance of 10 mm between sediment suction pipe and tank bottom.https://www.mdpi.com/2077-1312/13/7/1236gas lift systemthree-phase flow characteristicsnumerical simulationlifting efficiency |
| spellingShingle | Yufei Zhang Andong Liu Chenglin Zhang Chongwu Guan Haigeng Zhang Design and Hydrodynamic Performance Analysis of Airlift Sediment Removal Equipment for Seedling Fish Tanks Journal of Marine Science and Engineering gas lift system three-phase flow characteristics numerical simulation lifting efficiency |
| title | Design and Hydrodynamic Performance Analysis of Airlift Sediment Removal Equipment for Seedling Fish Tanks |
| title_full | Design and Hydrodynamic Performance Analysis of Airlift Sediment Removal Equipment for Seedling Fish Tanks |
| title_fullStr | Design and Hydrodynamic Performance Analysis of Airlift Sediment Removal Equipment for Seedling Fish Tanks |
| title_full_unstemmed | Design and Hydrodynamic Performance Analysis of Airlift Sediment Removal Equipment for Seedling Fish Tanks |
| title_short | Design and Hydrodynamic Performance Analysis of Airlift Sediment Removal Equipment for Seedling Fish Tanks |
| title_sort | design and hydrodynamic performance analysis of airlift sediment removal equipment for seedling fish tanks |
| topic | gas lift system three-phase flow characteristics numerical simulation lifting efficiency |
| url | https://www.mdpi.com/2077-1312/13/7/1236 |
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