Double buoyancy ball overflow preventing floor drain
A buoyancy ball and anti-backflow technology, which is applied to waterway systems, drainage structures, water supply devices, etc., can solve the problems of drying up, less sealing water, and odor return, and achieve good effect, long water sealing time, and convenient cleaning.
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[0026] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0027] like figure 1 , figure 2 As shown, the double buoyancy ball anti-backflow floor drain includes a floor drain frame 1, a floor drain cover 2, a water guide pipe 3, an outer casing 4, a buoyancy ball cover 5 and a buoyancy sealing head 6, and the floor drain cover is arranged on the floor drain frame, and the floor drain frame is A stepped cylindrical structure with an open top and a large top and a small bottom. A lower annular baffle 15 is fixed on the shoulder of the inner step of the floor drain frame. The lower annular baffle is lower than the upper surface of the floor drain frame. The gap between the floor drain frame and the lower annular baffle The gap between them forms an outer water seal groove 16, the gap between the lower annular baffle plate and the buoyancy ball cover forms an inner water seal groove 17, and the middle pa...
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