[Instrument latest patent] a new type of moisture-proof intelligent water meter

Content Description

The utility model relates to a novel moisture-proof intelligent water meter.

Background of the invention

Chinese patent 201320319361 .3 discloses a smart water meter. The smart water meter includes AC and DC power supplies, a driver, a microprocessor, a flow sensor, an IC card holder, an LCD and an electric valve. The AC/DC power supply is connected to a drive, a microprocessor and an LCD, and the drive is connected to an electric valve and an electric valve. One end is connected to the inlet and the other end is connected to the outlet. A flow sensor is connected between the electric valve and the outlet. The microprocessor connects the IC card holder and the LCD. The smart water meter has a simple structure and is easy to maintain, and realizes low power consumption and good use effect. However, moisture in the air can easily cause corrosion in the microprocessor and shorten its service life.

Summary of the Invention

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

In order to solve the above technical problems, the technical solution adopted by the utility model is: a novel moisture-proof smart water meter, comprising a water inlet pipe, a sealed shell fixed on the top of the water inlet pipe, and a flow sensor installed in the water inlet pipe. A CPU chip is mounted in the housing, and a display screen is mounted on the outer wall of the sealed housing. The CPU chip is respectively electrically connected with the display screen and the flow sensor. The flow sensor is used to detect the water flow and transmit the water flow information. To the CPU chip, the display screen is used to display the converted water flow information, characterized in that a top support bar is fixed on the top of the sealed case, and the vertical support bar is fixed from top to bottom in sequence. A first cross bar and a second cross bar, a small air pump is fixed at the end of the first cross bar, a moisture-proof box is fixed at the end of the second cross bar, and the moisture-proof box is filled with a moisture-proof agent. A first tube body connected to and communicating with the outer wall of the moisture-proof box is connected to an air inlet of the small air pump, and a second tube body connected to the sealing shell is connected to the moisture-proof box. A third tube body connected to and communicating with the seal housing is connected to an outlet of the small air pump, and an anti-pressure device is fixed on an outer wall of the first tube body, and the anti-vacuum pressure device is fixed on the third tube body. A mounting body for the external body wall and a horizontal air inlet tube fixed on the mounting block, and an outlet connected to the first body and the horizontal air inlet pipe is arranged on the mounting block, and the horizontal inlet pipe has a plate fixed therein. The body is provided with an air hole with a trapezoidal cross-section, and a movable plugging device is provided in the air hole to fit the air hole. At least one inner surface of the horizontal air intake pipe is fixed near the mounting block. A connecting block to which an elastic push-in device connected to the active plugging device is fixed.

Preferably, the above-mentioned novel moisture-proof smart water meter, in which a power module is fixed in the sealed housing, an outer wall of the sealed housing is provided with a switch button for controlling the opening and closing of the small air pump, the switch button and the power module A small air pump is connected in series, and the power module is electrically connected to the CPU chip. The above novel moisture-proof smart water meter, wherein the active plugging device comprises a fixed column, a seal ring sleeved on the outer wall of the fixed column and adapted to the air hole.

Preferably, the above-mentioned novel moisture-proof smart water meter, wherein the elastic pull-in and pull-out device includes a first end base fixed on the connecting block, a receiving tube welded on the first end base, and fixed on the fixed column And a second end seat on the upper end and a plunger rod fixed on the second end seat, a sliding seat is slidably disposed in the receiving tube, a free end of the receiving tube is fixed with a clamping plate, and a free end of the insertion rod is passed through. After passing through the card board and connecting with the sliding seat, the first end seat and the sliding seat are connected through a first spring, and the plunger is located between the sliding seat and the card board and is set with a second spring.

The technical effects of the utility model are mainly embodied in that: a user can regularly start a small air pump. After the small air pump is started, the air inside the sealed housing can be pumped into the moisture-proof box to perform dehumidification, preventing the moisture in the air from causing the CPU chip to generate. Corrosion; When the moisture-proof agent due to moisture absorption will make the moisture permeability in the moisture-proof box become worse, when the small suction pump starts, the first tube will produce negative pressure, the outside air will push the active blocking device to move towards the first tube body Air will enter the first tube body through the gap between the air hole and the active plugging device, so as to maintain the fluidity of the gas in the first tube body, avoiding the idling of the small air pump and being burned out, making the utility model more practical. When the air pressure in the first tube is balanced, the active plug device returns to its original position under the action of the elastic pull-in device.

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