Rotary screen recovery device applied to potassium nitrate production

The utility model relates to the technical field of potassium nitrate production, and discloses a drum screen recovery device applied to potassium nitrate production, which comprises a shell, a first crushing roller is rotatably connected to the top of the inner wall of the shell, a first motor is fixedly connected to the top of one side of the outer side of the shell, and a second crushing roller is arranged on one side of the first crushing roller. And a filter screen is arranged in the middle of the inner wall of the shell, a second motor is fixedly connected to the top face of the material returning barrel, the output end of the second motor is fixedly connected to the top of the packing auger, and the other end of a material returning pipe is arranged above the first smashing roller. According to the potassium nitrate particle smashing device, potassium nitrate particles can be smashed by starting the first motor, large potassium nitrate particles can enter the material returning barrel through the filte