A dosing device for terminal water treatment comprises a medicament and a shell with a water inlet and a water outlet. Scale inhibitor is added into the device to form a water-cut scale inhibitor, and water purification filter material is added to form a water purifier with broken faucet. Characterized in that besides the water inlet and the water outlet, the shell is provided with holes, slits or grooves communicated with the outside air, and is always kept open and ventilated. According to the invention, the water cutoff function is realized by using the atmospheric pressure and the gravity of water itself, so that potential safety hazards such as over-standard concentration caused by drugs still being soaked in water after water use is stopped are avoided, waste water is not discharged, and the dosage of drugs is reduced.
Self-cleaning water purifier is just a name, just like what we call cars, mobile phones and televisions. Patents protect the corresponding technical solutions or products that can be produced under certain methods.