Vertical pressure-superposed non-negative-pressure water supply equipment of in-tank pump pipe network

The utility model relates to vertical pressure-superposed non-negative-pressure water supply equipment of an in-tank pump pipe network and belongs to the field of non-negative-pressure water supply equipment. The vertical pressure-superposed non-negative-pressure water supply equipment comprises a plurality of sealed tanks (11), tank pumps (10) mounted in the sealed tanks (11) and negative pressure preventing controllers (6) and is characterized in that the tops of the sealed tanks (11) are jointly connected with a total water outlet pipe (1) through water distribution devices, the bottoms of the sealed tanks (11) are mounted on a base (14) side by side, the upper parts of every two adjacent sealed tanks (11) are communicated through one negative pressure preventing controller (6), the lower parts of every two adjacent sealed tanks (11) are communicated through a water through pipe, and the lower part of one sealed tank (11) is connected with a total water inlet pipe (13). According to the vertical pressure-superposed non-negative-pressure water supply equipment of the in-tank pump pipe network, the sealed tanks and the in-tank pumps are adopted, so that a useful and backup working manner is realized, meanwhile, the generation of negative pressure can be thoroughly avoided, water pollution is avoided, and noise pollution caused by equipment is minimized.