On November 14, 2017, Zhangye Jinzhi Information Technology Co., Ltd. applied for a national invention authorized patent-a new type of moisture-proof smart water meter.

The utility model relates to a new type of moisture-proof intelligent water meter.

Chinese patent 201320319361 .3 discloses a smart water meter. This smart water meter includes an AC and DC power supply, a drive, a microprocessor, a flow sensor, an IC card holder, an LCD, and an electric valve. The AC and DC power supply is connected to the drive, the microprocessor and the LCD, and the drive is connected to the electric valve and the electric valve. One end is connected to the inlet, the Other end is connected to the outlet, a flow sensor is connected between the electric valve and the outlet, and the microprocessor is connected to the IC card socket and the LCD. This kind of smart water meter has a simple structure, is convenient to maintain, and realizes the characteristics of low power consumption, and the use effect is good. But the humidity in the air can easily corrode the microprocessor and shorten the service life.

The problem to be solved by the utility model is to provide a new type of moisture-proof intelligent water meter with long service life.

The picture shows the structure diagram of the utility model

In order to solve the above technical problems, the technical solution adopted by the present utility model is: a new type of moisture-proof smart water meter, comprising a water inlet pipe, a sealed shell fixed on the top of the water inlet pipe, a flow sensor installed in the water inlet pipe, and the seal A CPU chip is installed in the casing, a display screen is installed on the outer wall of the sealed casing, and the CPU chip is electrically connected to the display screen and a flow sensor respectively, and the flow sensor is used to detect the water flow rate and transmit water flow information For the CPU chip, the display screen is used to display the converted water flow information, and it is characterized in that a vertical support rod is fixed on the top of the sealed housing, and a vertical support rod is fixed from top to bottom on the vertical support rod. The first crossbar and the second crossbar, the end of the first crossbar is fixed with a small suction pump, the end of the second crossbar is fixed with a moisture-proof box, and the moisture-proof box is filled with moisture-proof agent, so The air inlet of the small suction pump is connected with a first pipe body connected and communicated with the outer wall of the moisture-proof box, and a second pipe body connected with the sealed housing is connected to the moisture-proof box. The outlet is connected with a third pipe body connected and communicated with the sealed housing, and an anti-negative pressure device is fixed on the outer wall of the first pipe body. The anti-negative pressure device includes an installation fixed on the outer wall of the first pipe Block, a horizontal air inlet pipe fixed on the mounting block, the mounting block is provided with an outlet connecting the first pipe body and the horizontal air inlet pipe, a plate body is fixed in the horizontal air inlet pipe, the plate body An air hole with a trapezoidal cross-section is provided on the air hole, a movable blocking device adapted to the air hole is arranged in the air hole, at least one connecting block is fixed on the inner wall of the horizontal air inlet pipe near the mounting block, and the connecting block An elastic plug-in device connected with the movable blocking device is fixed on the block.

Preferably, the above-mentioned new type moisture-proof smart water meter, wherein a power module is fixed in the sealed casing, a switch button for controlling the on and off of the small suction pump is provided on the outer wall of the sealed casing, the switch button, the power module , The small air pump is connected in series, and the power module is electrically connected with the CPU chip. In the above-mentioned novel moisture-proof smart water meter, the movable blocking device includes a fixed column and a sealing ring sleeved on the outer wall of the fixed column and adapted to the air hole.

Preferably, the above-mentioned new-type moisture-proof smart water meter, wherein the elastic plug-in device includes a first end seat fixed on the connecting block, a receiving tube welded on the first end seat, and a fixed column The second end seat on the upper side, the insertion rod fixed on the second end seat, a sliding seat is slidably arranged in the receiving tube, the free end of the receiving tube is fixed with a clamping plate, and the free end of the insertion rod penetrates Through the card board and connected with the sliding seat, the first end seat and the sliding seat are connected by a first spring, and the inserting rod is provided with a second sleeve between the sliding seat and the card board. spring.

The technical effect of the utility model is mainly reflected in the fact that the user can start the small air pump regularly. After the small air pump is started, the air in the sealed casing can be pumped into the moisture-proof box for dehumidification, preventing the humidity in the air from causing the CPU chip to generate Corrosion; when the moisture-proof agent absorbs moisture, the air permeability in the moisture-proof box becomes worse. At this time, after the small air pump is started, negative pressure will be generated in the first tube, and the outside air will push the movable blocking device to move toward the first tube. , The air will enter the first tube through the gap between the air hole and the movable blocking device, thereby maintaining the fluidity of the gas in the first tube, avoiding the small air pump from idling and being burned out, making the utility model more practical When the air pressure in the first tube is balanced, the movable blocking device returns to its original position under the action of the elastic plugging device.

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