Anti-overflow vacuum suppressor

The utility model discloses an anti-overflow vacuum suppressor which comprises a mounting plate, a protective shell is fixedly connected to the top of the mounting plate, and a water accumulation box is slidably connected to the position, close to the bottom, of the side wall of the protective shell and used for collecting water overflowing accidentally, so that later inspection of workers is facilitated. And a moving rod is arranged in the middle of the mounting plate in a penetrating mode, a floating ball is fixedly connected to the bottom of the moving rod, and the moving rod is driven to move upwards through buoyancy of the floating ball on water. The sealing assembly is arranged in the suppressor, so that the interior of the suppressor can be further sealed, overflow is prevented, meanwhile, the water collecting cavity is formed in the bottom of the suppressor, overflow water can be collected and prevented from flowing to the outside, and workers can conveniently and regularly check the overflow preventi