Filter element life indicator device with automatic water cut-off function
A filter element life, automatic water cut-off technology, applied in the direction of filtration separation, separation methods, chemical instruments and methods, etc., can solve the problems of misuse of unsafe drinking water, difficulty in determining the life of filter elements, etc.
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Embodiment 1
[0030] Filter element life indicator device with automatic water cut-off function, such as Figure 1-Figure 8 As shown, it also includes a controller 320, a water shut-off solenoid valve 1 and a filter element life indicator 3 connected to the filter element 2. The filter element life indicator 3 is provided with a flow collection device 31, and the filter element life indicator 3 includes an indicator upper cover 314 and The indicator lower cover 315, the flow collection device 31 is located between the indicator upper cover 314 and the indicator lower cover 315, the indicator upper cover 314 is provided with a display screen connected to the controller 320 and used to indicate the life of the filter element 2, and the control The controller 320 controls the display screen to display the service life of the filter element 2 according to the received flow signal. A battery slot 316 is provided at the bottom of the indicator lower cover 315, and a battery 317 for power supply i...
Embodiment 2
[0042] The flow acquisition device 31 also includes a counting chip and a frequency-current conversion circuit. The frequency-current conversion circuit is used to convert the pulse signal generated by the preamplifier into an analog current to obtain an instantaneous flow value. The counting chip is used to accumulate the instantaneous flow value. Get the cumulative flow value. The pulse signal is sent to the frequency current conversion circuit, the pulse signal is converted into an analog current, and then the instantaneous flow value is indicated, and the accumulated flow value obtained by the low-power counting chip is accumulated, and the accumulated flow value obtained by recording is displayed on the LCD frequency.
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