Eccentric metering water meter with rotatable counter

Abstract

The invention discloses an eccentric metering water meter with a rotatable counter; the water meter comprises an impeller A, a sensitivity tooth A and an eccentric tooth A, the impeller A and the sensitivity tooth A are coaxially arranged, the eccentric tooth A is eccentrically arranged relative to the impeller A, the impeller A is provided with a driving tooth meshed with the eccentric tooth A, and the sensitivity tooth A is provided with a sensitivity tooth magnetic ring A coaxially arranged with the sensitivity tooth A; a transition tooth magnetic ring is coaxially arranged between the sensitivity tooth magnetic ring A and the impeller A. The eccentric tooth A is provided with a transition tooth meshed with the eccentric tooth A. The transition tooth magnetic ring and the transition tooth are coaxially arranged, and the transition tooth magnetic ring is fixedly arranged on the transition tooth. Return of the rotation center of the impeller A is achieved mainly through the transition tooth, meanwhile, the speed reduction requirement is met, synchronous action of the upper magnetic ring and the lower magnetic ring is guaranteed, the eccentric metering water has good sensitivity and metering characteristics, the overall structure is simple, cost is low, implementation is convenient, ready-made installation and water volume reading are greatly facilitated, meanwhile, the requirement for the installation environment is lower. And the dismounting efficiency can be improved.

Description

technical field [0001] The invention belongs to the field of water meters, and in particular relates to a counter rotatable eccentric metering water meter. Background technique [0002] Most of the early dry water meters were concentric metering and concentric magnetic transmission structures (see attached Figure 10 As shown), impeller B20, impeller magnetic ring B21, central tooth magnetic ring B22, sensitivity tooth B23 and central tooth B24 are coaxially arranged. This design structure is simple, and the rotation of counter B25 is not restricted. There are many insurmountable defects. For example, in order to ensure the measurement of the low area of ​​the water meter, it is required that the magnetic field strength of the center tooth magnetic ring B22 and the impeller magnetic ring B21 have a good consistency, otherwise it will cause large dispersion of measurement errors in the low area during mass production. In addition, in order to ensure that the large flow rate o...

AI Technical Summary

Problems solved by technology

[0004] In view of this, the present invention provides a counter rotatable eccentric water meter to solve the problems in the prior art that the counter is limited by the use environment and inconvenient to assemble and disassemble.

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