Leakage-proof collecting device

The utility model discloses a leakproof collecting device, which relates to the technical field of chemical production equipment, and comprises a guide belt sleeved with a discharge port, the upper port of the guide belt is sleeved with a tightening ring, and the tightening ring is used for sealing the joint of the guide belt and the discharge port; a plurality of telescopic guide rings are arranged on the guide belt in a sleeving manner; the lower end opening of the guide belt is sleeved with a clamping block. According to the aluminum hydroxide micro-powder collecting device, the guide belt is arranged at the discharging port in a sleeving mode, the connecting position is tightened and sealed through the tightening ring, and it is guaranteed that aluminum hydroxide micro-powder cannot be scattered or leaked at the discharging port when collected. And meanwhile, the guide rings are arranged around the guide belt, so that the guide belt is prevented from deviating, and the situation that the production enviro