Non-stop screen changer for granulation (hot and cold cutting)

　　The special non-stop screen changer for granulation (hot cutting and cold cutting) chooses die surface hot cutting, underwater hot cutting (water cutting) and drawing strip cold cutting processes according to the characteristics of raw materials and process requirements.

　　(1) The granulation of large and super-large petrochemical raw materials or modified materials usually adopts underwater hot cutting. Because of the large filtering area, large melting pressure, high temperature and high output, the common sealing method can not meet the requirements and is easy to leak. We adopt a mesh changer with elastic sealing system and automatic compensation. The sealing pressure increases with the increase of melting pressure of random head and never leaks. Convenient and fast network switching, long service life.

　　(2) Small-scale cold-cut strip pelletizing process generally uses multi-screen reciprocating filter screen changer (e.g. double-column four-position hydraulic screen changer and double-column four-position backwashing hydraulic screen changer), because it has a pressure stabilization and automatic exhaust mechanism, it does not stop the machine when changing the screen, continuous strip, does not affect normal production, and the particles are smooth and free of bubbles. The integrated design and manufacture of die and net changer is reasonable, economical and affordable.