Fluid bed granulator

The utility model provides a fluid bed granulator, includes lower hold, feed bin and top storehouse including boiling pelletization main part, hot blast blowpipe apparatus, jetting device and the processing unit that airs exhaust, boiling pelletization main part, lower hold, feed bin and top storehouse still are provided with a stand from upwards setting gradually down in the boiling pelletization main part, the lower part of lower hold is provided with an air inlet connecting pipe, air inlet connecting pipe and hot blast blowpipe apparatus's air outlet sealing connection, the setting of jetting device is inside a storehouse, the processing unit that airs exhaust sets up the top in a storehouse, the processing unit that airs exhaust includes filtering cloth bag and pulse blowback subassembly, and filtering cloth bag sets up in the top in a storehouse and form the filter chamber, and pulse blowback subassembly includes spray tube, connecting tube, pulse valve and air compressor, and the spray tube passes throu