Spiral filter -press

The utility model relates to a spiral filter -press, include the frame and fix the casing in the frame, be equipped with a plurality of filtration pores on the casing section of thick bamboo wall, be equipped with the rotation axis that runs through the casing in the casing, net shape is strained for the outer cladding rotation axis of the hollow shaft that has the filtration pore to the rotation axis, still is equipped with helical blade on the rotation axis, and the rotation axis both ends are equipped with the washing liquid entry respectively and blowback gas enters the mouth, shells inner wall is equipped with the casing filter screen, and the casing outer fringe is equipped with presss from both sides the cover, be divided into feed zone, colating section, washing section, dry section and ejection of compact section in the casing, the feed zone is equipped with the thick liquids entry, the colating section is equipped with the filtrating discharge port, the washing section is equipped with the washing liquid discharge port, dry section is equipped with blowback gas discharge port and washing emptying mouth, ejection of compact section is equipped with the filter cake discharge port. The utility model provides a pair of spiral filter -press, equipment structure is simple reliable, and it is high to filter pressure differential, can realize the continuous operation of filtration, washing, cleaning process.