Patent ID: 7517451

Claim:
A filter for drinking water, comprising: a first filtering bottle, including a nonwoven filtering core; a second filtering bottle, including a ceramic filtering core; a third filtering bottle, including magnets and different kinds of minerals that can radiate far infrared; a fourth filtering bottle, including an active carbon filtering core and an alloy of copper and zinc; the first filtering bottle, the second filtering bottle, the third filtering bottle and the fourth filtering bottle are orderly in turns and connected by tubes, wherein water is poured into an inlet tube passes through the four filtering bottles and is discharged from an outlet tube for drinking, wherein the third filtering bottle is divided into two layers, the water flows through the two layers, the lower layer is filled with the different kinds of minerals that can radiate far infrared in order to activate the water with far infrared energy, the minerals are maintained in the lower layer by a filtering net, the upper layer has a magnetic cylinder, a flowing water passage is formed in the middle of the magnetic cylinder, and a cuboid magnet and a semicircle iron post are disposed on each side of the flowing water passage and are wrapped by plastic materials.