An anti-sewage backflow device for urban manholes based on the principle of electromagnetic induction
An electromagnetic induction and principle technology, applied in water supply devices, waterway systems, drainage structures, etc., can solve problems such as lack of anti-backflow of inspection manhole covers, water accumulation on roads, and environmental pollution, so as to avoid environmental pollution and affect the normal life of residents. The effect of avoiding damage to personnel and vehicles
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[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0026] see Figure 1-4 , an urban inspection well anti-sewage backflow device based on the principle of electromagnetic induction, comprising a well wall 1 and a slide rail 2, the top of the well wall 1 is movably connected to an inspection well cover 3, the outside of the well wall 1 is movably connected to a water inlet pipe 4, and the slide The rail 12 is fixed inside the well wall 1, and the water inlet pipe 4 adopts a T-shaped pipe; the inside of the well...
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