Drip metering water meter

The utility model discloses a drip metering water meter, belonging to the field of metering water. The utility model is used for solving the problem of metering water flow when water flows in the way of dripping. The drip metering water meter is provided with a general mechanical metering water meter (1) and an assorted functional unit (2). The functional unit (2) comprises a check valve (3) and an accumulation energy movable conjunction device (4), and the check valve (3) and the accumulation energy movable conjunction device (4) are correlated. The valve body (5) of the check valve (3) is provided with a function cavity (14) and a sealed upper cover (7). A valve plate (10) is hinged with a small shaft (6) fixed on the valve body (5). Meanwhile, a motion rod (11) is fixedly connected with the valve plate (10). The accumulation energy movable conjunction device (4) is arranged in the function cavity (14) and has a lower magnetic block (12) which is fixedly connected with the valve body (5) directly or indirectly. The accumulation energy movable conjunction device (4) is also provided with an upper magnetic block (13) which is in on-off match with the lower magnetic block (12) and is arranged on the motion rod (11). The valve plate (10) can suddenly open by making use of differential pressure produced by dropping water on both sides of the valve plate (10) so that the general mechanical metering water meter (1) can be sufficiently started by the speed of the water flow and the measurement of the dropping water is finished. The drip metering water meter has the advantages of avoiding economic loss caused by that water supply units can not measure dropping water and being of great advantage to saving water and energy.