Water-cooling heat dissipation device for magnetron of microwave drying device

The utility model discloses a water-cooling heat dissipation device for a magnetron of a microwave drying device. The water-cooling heat dissipation device comprises a water inlet pipe, a water inlet pipe seat, a water outlet pipe, a water outlet pipe seat, a water-cooling radiator and a water outlet sealing device. The water-cooling radiator comprises a water-cooling heat dissipation left surrounding seat and a water-cooling heat dissipation right surrounding seat which are arranged in a butt joint mode, wherein grooves and water-cooling heat dissipation channels are respectively formed in the water-cooling heat dissipation surrounding seats, the water-cooling heat dissipation left surrounding seat is provided with a left side plug-in connection pipe and a left plug-in connection inner hole, the water-cooling heat dissipation right surrounding seat is provided with a right side plug-in connection pipe and a right plug-in connection inner hole, and a plug-in connection sealing device is arranged between the left plug-in connection inner hole and the right side plug-in connection pipe. A cold water stroke is increased to the maximum extent through the spiral water-cooling heat dissipation channels, heat exchange area and time are further increased, the heat dissipation efficiency of the magnetron is remarkably improved, the sealing performance of a water way can be ensured through a water inlet sealing device, the water outlet sealing device and the plug-in connection sealing devices, water leakage is prevented, and the water-cooling heat dissipation device can quickly achieve magnetron temperature reduction and ensure the safety in usage.