Patent ID: 7407573

Claim:
A quick countercurrent-type water purifier comprising: two filters, two motors, a purified water storage tank and a waste water tank, wherein a top water outlet of each of the two filters is respectively configured with a flowmeter and a top branch pipe, a top valve is configured in each of two ends of each of the top branch pipes, and a top connecting pipe is configured between each of two of the valves of each respective one of the top branch pipes, wherein a first of the top branch pipes after connecting to a first motor of the two motors connects to a second of the top branch pipes by means of another branch pipe and converges therewith to flow into the purified water storage tank; a bottom branch pipe is configured to a water inlet at a bottom of each of the two filters, and a bottom valve is configured in each of two ends of each of the bottom branch pipes, and a bottom connecting pipe is configured between each of two of the valves of each respective one of the bottom branch pipes, the bottom branch pipes connect to a raw water inlet pipe and a waste water tank respectively, a second motor of the two motors is configured to the raw water inlet pipe.