Vacuum extruder for producing ceramic wood-grain tile

Disclosed is a vacuum extruder for producing the ceramic wood-grain bricks, which is characterized in that a mixing inlet, which is communicated with the outlet of a secondary spiral cylinder, is opened on a principal spiral cylinder. A propeller of the secondary spiral cylinder pushes the mud strip coming from the inlet of a B mud strip into the principal spiral cylinder. The propeller of the secondary spiral cylinder extrudes the B mud strip into the principal spiral cylinder so that the two kinds of mud strips can be mixed with each other, and then ceramic wood-grain bricks with wood grains can be extruded out at an extruding mouth. The utility model has the advantages that the utility model can produce continuous falling material and the wood grain is true to nature and natural, and the wood grain patterns can be changed naturally and randomly, and the utility model can produce patterns of wood joint shape with high production efficiency.