Vertical high-temperature jacketed pump

The utility model discloses a vertical high-temperature jacketed pump, which relates to the technical field of high-temperature jacketed pumps and comprises a pump body, a pump cover, an impeller, a pump shaft, a supporting pipe, a middle connecting section, a liquid outlet pipe, a bearing box and a mechanical seal. Compared with grease lubrication, thin oil lubrication can be used for cooling a bearing better, lubricating oil is directly cooled in the mode that the cooling coil pipe is additionally arranged in the bearing box, the cooling coil pipe is additionally arranged in the bearing box, the cooling coil pipe is additionally arranged in the bearing box, and therefore the cooling effect of the bearing box is improved, and the service life of the bearing box is prolonged. In this way, the service life of the bearing can be prolonged on the premise that the bearing clearance amount is not affected, the middle connecting section and the supporting pipe are connected through the bolts, the middle connecting