Wide-range photoelectric direct-reading water meter

Abstract

The invention discloses a wide-range photoelectric direct-reading water meter which comprises a counter, a gear box (7), an impeller and an impeller box (1). The gear box (7) is mounted on the top of the impeller box (1), eight water inlets (3) are arranged at the bottom of the impeller box (1), four water outlets (4) are arranged on the top of the impeller box (1), four to six decelerating stems A (9) are arranged on a bottom surface A (8) of the gear box (7), and six to eight decelerating stems B (6) are arranged on a bottom surface B (5) of a cavity (2) of the impeller box (1). The wide-range photoelectric direct-reading water meter has the advantages that the rotational speed of the impeller is regulated by the decelerating stems B and the decelerating stems A when the impeller is impacted by water flow to rotate, various flow points are precisely metered, so that low flow can be metered, Q3 / Q1 ratio can be higher than 160, and counting precision of the water meter is improved.

Description

technical field [0001] The invention relates to the technical field of water meters, in particular to a wide-range photoelectric direct-reading water meter. Background technique [0002] Photoelectric direct reading water meter is a kind of water meter that can not only read directly, but also realize remote meter reading. This kind of water meter is convenient for meter reading, and the reading is reliable and accurate. At present, property communities, industrial and mining enterprises, schools and institutions have begun to use photoelectric direct reading type water meter. The water meter structure includes the impeller metering part and the counter part. The counter part is to convert the digital wheel display into a photoelectric signal to realize remote meter reading and control through the Internet or GPRS. The impeller metering part includes the impeller box, impeller, gear box and installed in the gear box. The gear and the impeller are installed in the cavity of ...

AI Technical Summary

Problems solved by technology

[0003] The impeller box of the existing water meter is usually equipped with six water inlet holes and six water outlet holes. Due to the shape of the water inlet hole and the center distance, the impact force of the fluid on the impeller is small, and the small flow rate of the water meter cannot be measured, resulting in a small flow rate. inaccurate reading

The ratio of existing water meter Q3 / Q1 (common flow / minimum flow) can only reach 80 times

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