Drum washing machine

1. A drum washing machine, comprising:

a washing machine housing, wherein a washing drum is disposed in the washing machine housing and comprises a front washing drum and a rear washing drum, wherein the front washing drum is sealedly connected to the rear washing drum, the rear washing drum is operative to rotate relative to the front washing drum, and the rear washing drum is operative to rotate along with a motor, wherein the front washing drum is stationary when the rear washing drum rotates along with the motor; and

a sealing window pad, wherein a loading port is provided at a side of the washing machine housing, a door and window is arranged at the loading port, and the sealing window pad is disposed between the door and window and the front washing drum;

wherein the front washing drum is connected to the rear washing drum via a rotary bearing, the rear washing drum is sleeved on an inner ring of the rotary bearing, the front washing drum is engaged with an outer ring of the rotary bearing, and a second sealing ring is arranged between the front washing drum and the rear washing drum;

wherein a limiting ring having an F-shaped cross-section is disposed at a joint of the front washing drum and the rear washing drum;

wherein the limiting ring comprises a first vertical limiting ring body, a first transverse limiting ring body disposed on top of the first vertical limiting ring body, and a second transverse limiting ring body parallel to the first transverse limiting ring body; and

wherein the second sealing ring is disposed between the first transverse limiting ring body and the second transverse limiting ring body, the rotary bearing is disposed in a space formed by the first vertical limiting ring body, the second transverse limiting ring body, and an outer wall of the rear washing drum.

2. The drum washing machine of claim 1 , wherein the front washing drum has a smaller length than the rear washing drum.

3. The drum washing machine of claim 1 , wherein the sealing window pad comprises an inner lip, an outer lip, and a folding member connecting the inner lip to the outer lip, wherein the inner lip is engaged with the front washing drum via a second clamp, and the outer lip is engaged with a front panel of the washing machine housing via a first clamp.

4. The drum washing machine of claim 1 , wherein a central axis of the washing drum is inclined relative to a horizontal plane, the central axis forming an angle of α with the horizontal plane, wherein 0≤α<90°.

5. The drum washing machine of claim 1 , wherein at least one lifting rib is arranged on an inner side wall of the rear washing drum.

6. The drum washing machine of claim 1 , wherein the second sealing ring is a lip-shaped sealing ring.

7. The drum washing machine of claim 1 , wherein the front washing drum is provided with a water inlet hole, a water inlet valve is disposed on the housing of the washing machine and is communicated with a detergent box via a water inlet pipeline, and the detergent box is communicated with the water inlet hole via a water injection pipe.