Today, I will introduce a national invention authorized patent-electronic screw-wing intelligent small-caliber water meter. The patent was applied for by Hangzhou Jingda Electronics Co., Ltd., and the authorization was announced on February 15, 2017.
Content descriptionThe invention belongs to the field of water flow measurement, and in particular relates to an electronic screw-wing type intelligent small-caliber water meter.
Background of the inventionAt present, most of our national water meters are rotary-wing water meters. The structure of this kind of water meter is that a display indicating mechanism is installed in the upper part of the water meter housing, and a rotary wing metering mechanism is installed in the lower part of the water meter housing. The metering mechanism includes a measuring cavity and a wing wheel for measuring the water flow in the measuring cavity. Its working principle is: the water flow hits the impeller tangentially from the water inlet of the watch case to make it rotate, and then continuously records the number of revolutions of the impeller through the gear reduction mechanism, thereby recording the cumulative flow through the water meter. The disadvantage of this structure is that the water flow guided by the diversion hole close to the water meter inlet is fast and the pressure is high, while the water flow guided by the diversion hole far away from the water inlet is slow and the pressure is small. For the wing wheel, it In addition to the tangential force that drives it to rotate, it also receives a radial force that forces it to deviate from the axis, so the frictional resistance increases, resulting in a decrease in the sensitivity of the water meter, and the support of the wing wheel shaft also causes unilateral wear. Its sensitivity is further reduced, thereby shortening the service life of the water meter, causing the user to increase the cost of use.
On the other hand, most of these water meters use metal materials such as copper and cast iron, which are prone to rust and will cause secondary pollution to water quality. How to reduce the resource occupation of non-ferrous metals and provide a healthy and environmentally friendly water meter when producing civil water meters has become a problem faced by many water meter manufacturers.
Summary of the inventionThe purpose of the present invention is to provide an electronic screw-wing type intelligent small-caliber water meter in view of the deficiencies of the prior art.
The technical solution adopted by the present invention to solve its technical problems is: an electronic screw-wing type intelligent small-caliber water meter, including a water inlet connector, a circuit board, a battery, a circuit board bracket, a circuit board pressure plate, a water outlet connector, a base meter, and a cover The battery supplies power to the circuit board and the reducer; the circuit board and the reducer are connected; the battery and the reducer are respectively fixed on the circuit board bracket and the base meter through the circuit board pressing plate; the circuit board has a liquid crystal display; the water meter also includes The metering system, the water inlet connector, the metering system, and the water outlet connector are connected in sequence. The water inlet connector, metering system, and water outlet connector are all installed on the base meter; the outer cover is on the base meter to seal the circuit board from the outside world .
The metering system includes a movement and a signal circuit board, a signal rod, a gasket, and a signal rod compression sleeve; the movement includes an upper part of the movement, two thimbles, a magnet, two agates, a screw-wing impeller, and a lower part of the movement; One thimble is installed on the upper part of the movement, against the agate on the upper part of the wing impeller; another thimble is installed on the lower part of the movement, against the agate under the wing impeller; the magnet is installed on the wing impeller; the movement passes through the water inlet The connector is fixed on the base meter; the signal circuit board is connected with the circuit board; the signal circuit board is located inside the signal rod, the signal circuit board and the signal rod are fixed on the signal rod compression sleeve by spacers, and the signal rod compression sleeve is fixed on the base meter; The signal rod receives the magnetic field signal of the magnetic steel on the wing impeller and transmits it to the circuit board through the signal circuit board. The circuit board receives the pulse signal, and digitally processes the pulse signal, and converts it into a flow value for display on the liquid crystal display.
The electronic screw-wing intelligent small-caliber water meter also includes an on-off control system. The water inlet connector, the metering system, the on-off control system, and the water outlet connector are connected in sequence. The on-off control system includes a valve pad, a valve ball, and a reducer. And the valve stem; the valve ball is fixed on the base table through the valve pad, the circuit board, the reducer, the valve stem, and the valve ball are connected in sequence, and the circuit board controls the rotation of the valve ball through the reducer and the valve stem. It also includes a water filter, which is installed at the front end of the water inlet connector. It also includes a check valve, which is installed at the end of the water outlet connector.
The beneficial effects of the present invention are: the present invention adopts the screw-wing impeller to realize the straight in and straight out of the water flow, can reduce the friction between the fluid and the meter, improve the sensitivity of the water meter, prolong the service life of the meter, and has a simple structure.
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