How to solve the problem of the vacuum chamber being filled with mud as shown in the picture? The extruding speed becomes slower because of too much mud accumulation.

The vacuum can only work with approximate mud material. Situation like mud accumulation and slower extruding process may be caused related to the mud press board and loosen extruder mixing paddles. In addition, it is also necessary to check the mud plate (reversed or not), its speed (35RPM for mixing paddles of 35 double-stage extruder), the clutch switch of mixing paddles and gap between the mixing paddles and its liner. The motor for mixing paddles are small, so problems of steel wire wrapping and large feed amount could slow the extruding speed, so checking one by one is very important. Equipment can run without material to test the paddle speed and other problems.