The utility model relates to an absorb tower side and go into formula agitator bearing structure, top -down include agitator body, stay tube no. 1, stay tube no. 2, limit stop, sliding bottom and civil engineering buttress in proper order, stay tube no. 1 that the pipe diameter is slightly little embolias in the great stay pipe of pipe diameter no. 2, the centre of stay pipe no. 2 is opened the spacing hole of rectangle and is cooperated limit stop. The beneficial effects of the utility model are that: support steel pipe height -adjustable, weld the fast knot after having avoided equipment to put into operation and construct that the civil engineering buttress subsides etc. To the stress damage of equipment, the base can slide among a small circle, has avoided the destruction to bolt fastener, civil engineering basis etc. Of rocking of the controllable within range of equipment, the device is simple, only needs the setting to set up the slot on support sleeve and can realize high regulation, and the base then relies on the polytetrafluoroethylene slide to realize sliding. The practicality is strong, does not influence other equipment's in the absorption tower operation, can accomplish the agitator during support piece height control and not shut down.