Layered sampler for sewage detection

The invention relates to the technical field of sewage detection, in particular to a stratified sampler for sewage detection, which comprises a protective shell and a connecting ring, a control panel is arranged on one side of the surface of the protective shell, a limiting groove is formed in the top end of the protective shell, and a sampling barrel is arranged in the limiting groove. An adaptive groove is formed in the top surface of the sampling barrel, and a piston rod is arranged in the adaptive groove; the connecting ring is installed on the outer surface of the piston rod, connecting plates are arranged on the left side and the right side of the connecting ring, and through grooves are formed in the surfaces of the connecting plates. According to the sewage treatment device, stirring is performed again through a second rotating shaft, a third rotating shaft, a mounting sleeve and a moving plate, sewage flows down through a first filter plate and a second filter plate, and then sludge on the surface of