Heating kettle for refining and purifying chlorothalonil

The utility model discloses a chlorothalonil refining and purifying heating kettle, and belongs to the technical field of chlorothalonil purifying equipment. An output shaft of the stirring motor (3) is connected with the stirring shaft (6) through the magnetic coupling (4), and a plurality of stirring blades (8) are arranged around the stirring shaft (6) at intervals; the magnetic coupling (4) comprises a driving disc (10), a driven disc (12) and permanent magnets (14), the driving disc (10) is fixedly connected with an output shaft of the stirring motor (3), the driven disc (12) is fixedly connected with the stirring shaft (6), a plurality of permanent magnets (14) are annularly arranged at the bottom of the driving disc (10) and the top of the driven disc (12), and the magnetic pole directions of every two adjacent permanent magnets (14) on the driving disc (10) and the driven disc (12) are opposite. According to the chlorothalonil refining and purifying heating kettle, the temperature of the stirring moto