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This paper takes the power source (gas–solid injector) of the large-sized particle pneumatic conveying system as the design object, builds the pure gas flow field experiment bed and particle pneumatic injection experiment bed, and establishes the dataset of the large-sized particle gas–solid injector of the injection experimental results. Constructed the simulation model of gas–solid injectors based on CFD-DEM coupling, and established the dataset of pure gas flow field injection and gas–solid injection simulation results under multiple evaluation indexes. These datasets are valuable for engineers and designers, providing a reference for designing gas–solid injectors and other pneumatic conveying devices.