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Gear flowmeter | Structure and principle of elliptical gear flowmeter

『Gear flow meter』Related information(flow rotameter|digital flow meter|balo meter|hydraulic flow meter|volumetric meter|positive displacement meter|pitot tube flow meter|displacement meter|cfm meter|variable area flow meter|inline flow meter|differential pressure flow meter|calibrated flow meter|velocity meter|paddle wheel flow meter|oval gear flow meter|anemometer hvac|multiphase flow meter|doppler flow meter|thorpe tube flowmeter|heat flow meter)

1. DN25 pipeline elliptical gear flowmeter

The gear related characteristics and supplementary information of DN25 pipeline elliptical gear flowmeter are as follows:

1. Gear design features High precision machining All gear parts surfaces are precision machined (such as grinding and polishing), without casting surface defects, ensuring smooth gear meshing, reducing friction and wear, thereby improving measurement accuracy and repeatability. Precision machining also reduces the clearance between gears, avoids liquid leakage, and further ensures measurement accuracy. The anti impurity design gear structure has low sensitivity to impurities, but to prevent jamming, a filter needs to be installed upstream of the flowmeter (the filtration accuracy is recommended to be selected based on the cleanliness of the liquid, usually 40-100 mesh). Gear materials are usually stainless steel or high-strength engineering plastics, which are corrosion-resistant and wear-resistant, suitable for high temperature and high viscosity liquid environments. The viscosity adaptive gear meshing method (volumetric measurement) makes it insensitive to changes in liquid viscosity and can measure a wide range of viscosity (such as engine oil, heavy oil, resin, etc.) without the need for frequent parameter adjustments. The on-site maintainability gear components adopt modular design, which can be disassembled and reinstalled on site without the need for professional personnel, and the reinstallation does not affect the original measurement accuracy, reducing maintenance costs.

2. Working principle of gears: The volumetric metering liquid flow meter drives the elliptical gear to rotate and discharge a fixed volume of liquid per revo

Gear flow meter
lution (such as the DN25 model, which typically has a displacement of 0.5-10L/revolution).

. By counting the number of gear revolutions and combining it with the displacement coefficient, calculate the total flow rate (cumulative flow rate, instantaneous flow rate, etc.). When the low pressure loss gear rotates, the clearance between it and the housing is small, the fluid resistance is low, and the pressure loss is small (usually ≤ 0.1MPa), which is suitable for long-distance pipelines or systems sensitive to pressure drop.

III. Precautions for Installation and Use (Gear Related) Direction and Position: The gear shaft must be installed horizontally (with the dial perpendicular to the ground) to ensure that the gears are evenly stressed and avoid eccentric wear.

. If the reading is unclear, the counter can be rotated 180 ° or 90 °, but the gear shaft must be kept horizontal. Pre run inspection: Before installation, use a bamboo stick to push the gear from the outlet to confirm that there is no jamming; If the gear does not move, it can be soaked in gasoline for cleaning (to avoid sediment blockage). Steam cleaning is strictly prohibited to prevent gear thermal deformation or lubrication failure. The throttle valve is installed at the inlet for valve operation, and the switch valve is installed at the outlet. Slowly open and close the valve to avoid damage to the gear caused by water hammer impact. In continuous use scenarios, a bypass pipe should be added to facilitate maintenance or replacement of the flow meter without stopping the machine.

IV. Supplementary Information on Gear Industry Network If you need to have a deeper understanding of gear technology or purchase related accessories, you can refe

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