Main Structure and Function of the Oval Gear Flow Meter

1、counter 2、pulse transmitter 3、accuracy adjustor 4、sealing coupling 5、front cover 6、cover plate 7、oval gears 8、shell 9、back cover

The oval gear flow meter consists of a flow meter body and a counting mechanism. When a heat sink is installed between the flow meter body and the counting mechanism, it forms a high-temperature flow meter. The flow meter body is composed of a measuring chamber equipped with a pair of oval gear rotors and a sealed coupling. The counting mechanism includes a reduction mechanism, an adjustment mechanism, a counter, and a transmitter.

Inside the measuring chamber, a pair of oval gears and cover plates form a crescent-shaped cavity that serves as the metering unit for the flow rate. The oval gears are driven by the pressure difference between the inlet and outlet of the flow meter, continuously rotating to measure the liquid through the crescent-shaped cavity and deliver it to the outlet. The volume of liquid passed per revolution is four times that of the crescent-shaped cavity. The sealed coupling transmits the total number of rotations and the rotational speed of the oval gears to the counting mechanism or transmitter, thereby allowing the determination of the total volume and instantaneous flow rate of the liquid through the pipeline.