Transmission System Design And Three-dimensional Fluid Simulation Of Substrate Board

According to the composition and breeding advantages of rice breeding substrates,the characteristics of its production process and storage methods were analyzed,and the importance of designing substrate drying rooms was clarified.Based on the analysis of the internal structure and drying characteristics of several common drying rooms,a series of mainstream drying methods are introduced.The development status,structural characteristics and application fields of different types of drying rooms at home and abroad were analyzed,and the future development trend of the drying room business in China and the development status of fluid simulation at home and abroad were analyzed.The transmission structure design of the continuous drying room is designed,and the four-layer drying track is designed,and the operation trend of the substrate board is from top to bottom.The substrate board is dried.A circular air outlet is opened at the top of the drying room,and opens at the left side of the drying room,extending the conveyor belt to the outside of the drying room and combined with the feeding mechanism.The substrate plate tray adopts a two-point support structure and punches the entire tray.The entire internal support structure is formed by welding rectangular tubes to support all transmission components.List the basic parameters and operating data of the conveyor,and analyze the force of the chain.Compare different steel materials,determine the material of the chain plate,and check its strength.The same method is used to select the pin.After the structure is determined,check its service life.Perform stress analysis on the sprocket and perform strength check.Using the method of computational fluid dynamics,the shape of the small air outlet in the drying room is simulated and analyzed.Based on the simulation analysis of many different air outlet shapes and sizes,the placement of the air outlets is analyzed to determine the optimal solution.According to the actual working situation,the programmable logic controller,analog input/output module,human-computer interaction panel,temperature sensor and humidity sensor are selected,and the connection method is explained.Briefly describe the operating status of the entire system,and write a flowchart of the operation of each module,and write a ladder diagram based on the flowchart.Finally,the embedded development software is used to design the human-computer interaction interface.