In marine engineering and water conservancy projects, dredging often occurs due to silt accumulation, which can impede the long-term development of water ecosystems and water storage systems. To enhance dredging efficiency and the performance of dredging machines, a novel type of winch suction underwater dredging robot was designed. Computational fluid dynamics software was utilized to establish a fluid model of the robot’s winch suction dredging device and conduct model simulation experiments. The simulation test results were used to investigate the factors influencing dredging performance and their impact laws. Five key factors—namely, the reamer rotational speed, reamer arrangement angle, water flow rate, inlet pipe diameter, and outlet pipe diameter—were selected for consideration. By setting up various sets of factor levels, the significant influence of different factors on dredging efficiency was examined. Analysis of variance was employed to analyse the results of the orthogonal experimental design, leading to the identification of optimal factor levels and the establishment of an optimal scheme group. The results of the optimal scheme were verified, demonstrating a 13.049% increase in dredging efficiency and a 19.23% decrease in power consumption of the sludge pump compared to the initial experimental setup. The performance of the optimal program surpassed that of all the experimental designs and met the design requirements.

With the improvement of living standards, people's demand for animal-derived food has surged, leading to the rapid development of the animal feed industry. Its production covers raw material crushing, mixing, granulation, drying and other complex links, resulting in exhaust gas rich in particulate dust, volatile compounds and other pollutants. If untreated direct emissions, not only seriously affect the surrounding air quality, threatening ecology and health, but also make enterprises face harsh environmental regulations and public opinion pressure. Now for the “14th Five-Year” window, environmental regulations are tightening, public awareness of environmental protection, effective control of food processing and feed production plant exhaust emissions is imminent. Vertical cellular wet electrostatic precipitator as a high-efficiency exhaust purification equipment, with a unique structure and principle, in the removal of exhaust particulate matter on the advantages of significant, for the solution of the industry exhaust pollution to bring new opportunities. In-depth investigation and optimization of the performance of this equipment is of great significance in promoting the green and sustainable development of the food processing and feed production industries. Application of electrostatic precipitators in animal feed production.