Horizontal spiral discharging sedimentation centrifuge and active sealing structure thereof

The utility model provides a horizontal spiral discharging sedimentation centrifuge and an active sealing structure thereof. The driving sealing structure comprises an annular air chamber arranged atthe position of the centrifugal machine partition plate, an air source and an air inlet pipe communicated with the air source and the annular air chamber, and an air outlet is formed in the face, opposite to the rotary drum, of the annular air chamber. The air curtain is formed in the gap between the centrifugal machine partition plate and the drum, the pressure of the air curtain is larger than the pressure in the chambers on the two sides, materials are effectively prevented from channeling into other chambers, energy consumption is not increased, and the service life of the motor or the whole machine is not shortened. The pressure of an air source can be controlled and adjusted according to changes of pressures of different chambers of the centrifugal machine and is in linkage control with a main machine, and u