Patent ID: 8181512

Claim:
A timing device, comprising: a timer and a flow meter mounted on the timer; wherein the timer is an electrically controlled flow switch and has a preset on/off time ratio; the timer has a first end provided with a water inlet port and a second end provided with a water outlet port connected to the water inlet port; the second end of the timer has a surface provided with a through hole located beside the water outlet port; the flow meter includes: a first guide pipe having a first end mounted on the water outlet port of the timer and a second end provided with a mounting chamber connected to the water outlet port of the timer; a magnetically controlled detector mounted on an outer wall of the first guide pipe; two electric cords electrically connected with the detector and extended through the through hole of the timer into the timer to electrically connect the detector to the timer; a rotation ring rotatably mounted in the mounting chamber of the first guide pipe and aligning with the detector; a magnetic member mounted on a peripheral wall of the rotation ring to move in concert with the rotation ring and movable to pass the detector intermittently; and a second guide pipe mounted on the second end of the first guide pipe and connected to the mounting chamber of the first guide pipe; the outer wall of the first guide pipe of the flow meter is provided with a fixing recess; the detector is secured in the fixing recess of the first guide pipe; the rotation ring of the flow meter is sandwiched and connected between the first guide pipe and the second guide pipe; a flow rate of water in the flow meter is calculated according to the times of the magnetic member passing the detector.