Traditional water meter-SHmeters

Traditional water meter

The internal structure of a conventional meter from outside to inside the housing can be divided into the sleeve, the inner core of the Big Three. Housing is cast iron, the water came out from the inlet through the lower portion of the annular space of the housing, here called "Under the donut." Above this annular space has "the donut" and outlet connected. Bottom of the sleeve there is a small hole with a filter, filter out debris in the water. There are two rows of the upper and lower side of the sleeve hole, the position of the hole coincides with the upper and lower ring chamber housing front, obviously, the lower is the water hole, the row is the water hole. Of particular note is that the two rows of holes are along the circle tangential direction at an angle to play. Note down two rows of holes opposite direction. Water flows from the lower row of holes into the tangential direction, is bound to form a revolving flow, which for the water meter work is very important. Inner core is divided into upper, middle and lower layer, the upper layer is seen from the windows, only the pointer and dial. In fact, the most critical is lower, and there are plastic wheels, the edge there are many plastic blade, called a "wheel."