The last layer of every filter sheet of this machine adopts KZP compact filter net, and fixing way is completely different from the former ways, with the filter on the top, so to ensure the diatonaceous earth not to drop, nor break; the filter sheet automatically rotate when clean the medium on it, so that the position of filter sheet can be changed without disassembly, hige production, and low labor force. It fits to big or medium enterprize. This machine will not change the pressure, nor even get the medium or impurity through the filter layer, so to ensure the filter quality.