Automatic jet breaking tool for solid fluidization exploitation of natural gas hydrate

An automatic jet breaking tool for solid fluidization exploitation of natural gas hydrate, comprising:

• an upper joint (1), an outer cylinder (2), an inner sliding sleeve (3), a lockup sliding sleeve (4), a thrust bearing (5), a spring (6), a jet joint (7), a telescopic jet sprinkler (8), a plug block (9) and an extrusion seal ring (10), wherein the upper joint (1) is located on the leftmost side of the whole device, the outer cylinder (2) is connected to the right side of the upper joint (1) by thread, the inner sliding sleeve (3) is mounted inside the outer cylinder (2), the lockup sliding sleeve (4) is mounted to an outer ring side of the inner sliding sleeve (3), the thrust bearing (5) is disposed on the right side of the lockup sliding sleeve (4), the spring (6) is disposed between the thrust bearing (5) and an inner side of the outer cylinder (2), the jet joint (7) is connected to the right side of the outer cylinder (2) by thread, the plug block (9) is connected to the interior of the jet joint (7) by thread, the telescopic jet sprinkler (8) is connected to an outer ring side of the jet joint (7) by thread, and the extrusion seal ring (10) is mounted to an outer ring side of the plug block (9) through a seal ring mounting groove (901).