The Changsha Magnetic Drive Pump for Calorimeters is a custom-developed leak-free conveying device designed to meet the medium transfer requirements during the testing process of calorimeters (such as oxygen bomb calorimeters, coal calorimeters, and oil calorimeters). This product abandons the traditional mechanical seal structure and adopts magnetic coupling drive technology, enabling precise delivery of water, antifreeze, and weakly corrosive media commonly used in calorimeter testing. It effectively prevents medium leakage from contaminating the testing environment and damaging the core components of the calorimeter, ensuring the accuracy of test data and the stability of equipment operation. It serves as a core supporting device for laboratory calorimetric analysis systems.