The HTCY series portable sampler is a compact, convenient, flexible, and mobile spiral sampler. The sampler is not restricted by conditions such as site space, and can easily sample solid granular materials in cross-sections or at a certain depth. It is suitable for random sampling of samples in testing and experiments in industries such as electric power, coal chemical industry, metallurgy, building materials, and geology where there is no mechanized sampling equipment or it is inconvenient to implement mechanized sampling.