Portable sampler for different layer depths

The utility model relates to a portable sampler for different layer depths. The portable sampler comprises a base, a sampling bottle and a telescopic rod, the sampling bottle is fixedly arranged on the base; a bottle cap is elastically arranged above the sampling bottle; a mounting rod is arranged on the base, and the lower end of the telescopic rod is fixedly arranged on the mounting rod; a submersible motor for lifting the bottle cap is arranged on the mounting rod; and the upper end of the telescopic rod is provided with a grab handle and switches for respectively controlling the telescopic rod to stretch out and draw back and the submersible motor to work. According to the device, the telescopic rod can stretch out and draw back freely, sewage at different depths in the biological tank can be sampled and treated respectively, and the device is very convenient; the submersible motor can work at a specific depth, the bottle cap above the sampling bottle is opened for sampling, and the elastically arranged b