Water dissolution reaction kettle for orthophosphoric acid fertilizer

The utility model relates to the technical field of phosphoric acid production, and discloses a water dissolving reaction kettle for orthophosphoric acid fertilizer, which comprises a kettle body and a kettle cover, a flange plate at the lower end of the kettle cover is fixedly connected with a flange plate at the upper end of the kettle body through a plurality of groups of fixing bolts, a mounting frame is welded on the upper surface of the kettle cover, and a driving mechanism is arranged on the upper surface of the mounting frame. The driving mechanism is in transmission connection with a quantitative feeding assembly, and the quantitative feeding assembly is arranged on the upper surface of the kettle cover; through cooperation of the driving mechanism and the quantitative discharging assembly, the driving mechanism drives the stirring assembly and meanwhile drives the connecting rod to drive the sleeve and the multi-group material distribution plate to rotate, so that raw materials quantitatively fall d