Improved high-temperature lead pump

The utility model provides an improved high-temperature lead pump, comprising a pump base, wherein a shaft is arranged on the pump base; a bearing frame is arranged on the shaft; a ball bearing and a cylindrical roller bearing are arranged inside the bearing frame; an impeller is arranged at the lowest end of the shaft; a fan is arranged on the shaft at the lower end of the cylindrical roller bearing; a pump belt wheel is arranged at the top end of the shaft; a motor rack is arranged on the pump base; a motor is fixedly arranged on the motor rack; a motor belt wheel is arranged on the motor; a belt is arranged between the motor belt wheel and the pump belt wheel; a pipe fitting component is arranged on the bearing rack; a reinforcing rib is arranged on the pipe fitting component. By adopting the improved high-temperature lead pump, the pump is driven to run by using the belt, the motor belt wheel and the pump belt wheel; when a running clearance of the pump is reduced due to high-temperature thermal expansion