Multifunctional intelligent liquid sampling integrated device

An existing liquid sampler needs manual operation or automatic collection by means of an electronic element, the sampling mode is inconvenient, and sampled components are prone to errors. The invention provides a multifunctional intelligent liquid sampling integrated device which comprises a gas outlet pipe, an oil gas temporary storage box and a separation box which are communicated in sequence, a sampling pipe and a drainage pipe are arranged on the separation box, an electronic valve is arranged on the drainage pipe, and a first rotating column is arranged in the oil gas temporary storage box and connected with a baffle. The first rotating column is connected with a first driving mechanism, the first driving mechanism can drive the first rotating column to drive the baffle to shield or open the oil gas temporary storage box, a fixing column is arranged in the separation box, a fixing plate, a disc and a limiting rotating circular plate are sequentially arranged on the fixing column, and the disc is connect