Combined sampler for chemical detection

The utility model discloses a combined sampler for chemical detection, which comprises a shell, a top cover is clamped at the top end of the shell, a rotating plate is arranged in the middle of the top cover, a sleeve penetrates through the top end of the rotating plate, a vertical pipe movably penetrates through the sleeve, a sampling nozzle penetrates through the top end of the vertical pipe, and fluorocarbon inert liquid is filled in the shell. A bottom plate is movably embedded in the fluorocarbon inert liquid, a plurality of sampling pipes are clamped at the top end of the bottom plate, and top plates are arranged at the tops of the sampling pipes. By arranging a series of structures, chemicals of the same type can be effectively prevented from being contained in the same space, so that the probability that the whole sample is abandoned due to the fact that the taken chemicals are polluted is reduced, the subsequent re-sampling step is avoided, the time spent on re-sampling is saved, and the working effi