Manual simple columnar sediment collecting device

The utility model discloses a manual simple columnar sediment collecting device. The device comprises a sampling pipe, a gas circuit control pipe, a first connecting rod and a second connecting rod, wherein the sampling pipe comprises a sampling cylinder, a reducing joint, a first connecting pipe, a first external thread movable joint, a gas circuit steel pipe, a gas hose, a steel pipe plug, a sampling pipe internal thread plug, a sampling pipe smooth plug and an inflator; the gas circuit control pipe comprises a four-way pipe, a second connecting pipe, a third connecting pipe, a fourth connecting pipe, a fifth connecting pipe, a sixth connecting pipe, a seventh connecting pipe, a check valve, a first ball valve, a second external thread movable joint, a first internal thread movable joint, a gas circuit control pipe plug and a gas nozzle; a first internal thread movable joint at the lower end of the gas circuit control pipe is connected with a first external thread movable joint at the upper end of the sampl