The utility model belongs to the technical field of lead smelting technology and specifically relates to a plumbous liquid leak protection device of plumbous pump that can stop plumbous pump liquid leakage phenomenon, easy maintenance is related to. The utility model relates to a plumbous pump shaft bearing of wounded in battle blue catcher, it includes motor, shaft coupling, minor axis, major axis, the pump body, the minor axis sets up in the bearing frame, and the minor axis upper end is connected with the motor through the shaft coupling, and the minor axis lower extreme is connected with spending blue shaft coupling upper end, spends blue shaft coupling lower extreme to be connected with the major axis, the major axis lower extreme set up in the plumbous pump body and impeller connection, the plumbous pump body goes out that the lead mouth passes through a lead pipe joint and the play lead pipe is connected. The utility model discloses there is following beneficial effect: the utility model discloses a having increased plumbous pump minor axis, having changed the bearing frame minor axis bearing frame into and put on the pump bracket, the major axis is connected through the catcher to the minor axis to it leads to the fact the bearing to lack oil emergence bearing card dead roasting motor phenomenon to have avoided bearing yin gaowen to make lubricating oil run off because of plumbous liquid high temperature dissolves. The utility model provides an actual production middle (center) bearing lubricating oil because of the technical problem that plumbous liquid high temperature runs off, be the strutting arrangement of the plumbous pump bearing ideal of lead smelting.