Underwater granulation with double column screen changer, using double column double station design, when working two filtering stations work at the same time, change the net when two filtering stations alternately change the net, a change of a net a work, always keep the material flow unimpeded, to ensure that in the underwater pulling strips of pelletizing production without adjusting the effect.

Double-column screen changer has good sealing structure design, which can not leak or seep under high temperature and high pressure, effectively reduce the resistance of screen changing and reduce the working pressure of hydraulic system. Optimized flow channel design, no dead angle, no stagnation, reduce the material in the screen changer stagnation time, reduce the risk of material degradation, improve product quality.

Progressive priming and exhaust structure can fully eliminate the gas trapped in the material and in the replacement porous plate, preventing the gas from mixing into the product during the process of screen changing and improving the quality of the product.

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