Monopotassium phosphate purification reaction kettle

The utility model discloses a monopotassium phosphate purification reaction kettle which comprises a kettle body and eight supporting legs, the eight supporting legs are respectively fixed at the bottom of the kettle body, a driver is arranged at the top of the kettle body, an inlet is formed in the right side of the top of the kettle body, a sealing assembly is arranged at the top of the inlet, and a shell is fixedly connected to the right side of the inlet. Through cooperative use of a sealing assembly and a fixing assembly, a user pushes a movable block to move, the movable block drives a movable rod to slide in an inner cavity of a channel, meanwhile, the movable rod drives a movable plate to move, the movable plate drives a rotating plate to move through a second rotating shaft, and the rotating plate is limited by a limiting column to move; the problems that most of feeding ports of existing reaction kettles are provided with threaded buckles, use is troublesome, time and labor are wasted, and the use e