Electrodialyzer's common -battery polar plate

The utility model provides an electrodialyzer's common -battery polar plate, electrodialyzer mainly constitute by membrane stack, clamping device, plate electrode, wherein the plate electrode divide into limit electrode and the common -battery utmost point, the electrode of membrane stack both sides be the limit electrode, middle electrode is the common -battery extremely, the both ends of the common -battery utmost point dispose the water distribution end respectively, wherein the moisture of each fresh water room and the dense hydroecium of membrane stack do not assemble to the fresh water outlet pipe and the dense water outlet pipe of common -battery utmost point upper end water distribution end, just fresh water inlet tube and dense water inlet tube pass through the fresh water inlet tube and the dense water inlet tube of tube coupling to common -battery utmost point lower extreme water distribution end respectively, and rivers pass through fresh water inlet tube and dense water inlet tube get into inside the membrane stack from the lower extreme, it has simple structure, reasonable, is favorable to the air bleed in the membrane stack clean, prevents gaseously in the membrane stack enrichment, overcomes prior art and has characteristics such as burning the membrane problem.