Vacuum negative pressure drainage device

The utility model discloses a vacuum negative pressure drainage device, which belongs to the technical field of vacuum negative pressure drainage, and comprises a moving plate, a negative pressure pump, a first elastic clamp, a push handle and three support rods are fixedly connected to the top of the moving plate, a filter barrel is fixedly connected to the top ends of the three support rods, and the filter barrel is fixedly connected to the bottom of the moving plate. A water pump and a third elastic clamp are fixedly connected to the side face of the filtering barrel, a cover plate is detachably connected to the top of the filtering barrel through a connecting bolt, a first filtering fence is placed in the filtering barrel, and a second filtering fence is placed in the first filtering fence; the water purifier has the beneficial effects that by arranging the first filtering fence and the second filtering fence, impurities in water can be effectively prevented from being directly discharged to pollute the e