IMPELLER TYPE WATER METER WITH A DESIGN FOR PROTECTION OF THE IMPELLER MAGNET FROM THE IMPACT OF THE MEASURED ENVIRONMENT Russian patent published in 2023 - IPC G01F1/75 

FIELD: instrumentation.

SUBSTANCE: invention can be used to measure water flow mainly in public water supply. The water meter contains a ring magnet, which is installed in a closed cavity between the impeller and the sleeve, which provides protection from the external environment from three sides. The open fourth side of the groove is hermetically sealed with a sleeve or an impeller. Tightness is ensured by a press fit of the bushing or by applying a sealant, glue or lubricant to the end surface of the bushing or the impeller. EFFECT: increase of the service life, immunity to the effects of chemical reagents used to disinfect water and protect the magnet from sticking foreign particles present in tap water.

2 cl, 3 dwg