Splicing water quality sampling mechanism

The water quality sampling mechanism comprises a hook, a sampling cylinder, a base and a threaded knob, bosses are arranged on the two sides of the upper portion of the sampling cylinder, the two sides of the hook are connected with the bosses respectively, the upper surface of the sampling cylinder is open, internal threads are arranged on the inner wall of the upper portion of the sampling cylinder, and the base is arranged at the bottom end of the sampling cylinder. The outer wall of the base is provided with an external thread, the external thread of the outer wall of the base is matched with the internal thread of the inner wall of the upper end of the sampling cylinder, the bottom end of the sampling cylinder is provided with a screw hole in a penetrating manner, and the threaded knob is mounted at the screw hole. The flexibility is greatly improved, every two sampling barrels are connected through threads, the falling condition is avoided, a single sampling barrel can be adopted for sampling, and the a