Patent ID: 9612230
Date: 2017-04-04
CPC Classifications: A61J,B32B,G01N

Claim:
1. A The water quality measuring device comprising: a measurement cell configured to pool sample water; a sample water supply unit configured to supply the measurement cell with sample water; a reagent supply unit configured to supply the measurement cell with a reagent to react with a water quality index substance; an agitating unit provided at a bottom of the measurement cell; a measuring unit configured to measure intensity of transmitted light of light having a required wavelength through sample water; and a control unit configured to control operations of the sample water supply unit, the reagent supply unit, the agitating unit, and the measuring unit; wherein the sample water supply unit includes an inlet channel configured to supply the measurement cell with sample water and an outlet channel configured to discharge sample water from the measurement cell, the inlet channel is connected to a flow channel configured to supply sample water, and includes a filter and an electromagnetic valve, the control unit opens the electromagnetic valve for supplying sample water to allow sample water, from which foreign substances are removed by the filter, to flow into the measurement cell, the inlet channel further includes a constant flow valve, the control unit opens the electromagnetic valve for supplying sample water to allow sample water, from which foreign substances are removed by the filter and of which flow rate is controlled by the constant flow valve, to flow into the measurement cell, the measurement cell has a pair of light transmission windows facing each other and provided in side walls, the measuring unit includes a light-emitting diode and a phototransistor facing each other with the light transmission windows sandwiched therebetween, in a state where the measurement cell pools sample water from which foreign substances are removed by the filter, the control unit operates the measuring unit to measure intensity of transmitted light through the sample water, the agitating unit includes an agitator rotatably provided on the bottom of the measurement cell and a stator provided outside the measurement cell, the control unit energizes an electromagnetic induction coil of the stator to rotate the agitator while sample water is supplied and the reagent is injected, the reagent supply unit includes a reagent cartridge removably provided at an opening of the measurement cell, the reagent cartridge includes a cartridge case and a medicine package housed in the cartridge case, the medicine package includes a container configured to contain the reagent, a tube body provided at a lower edge of the container and configured to connect an interior and an exterior of the container, a first tube having a first end coupled to the tube body and made of an elastic material, and a nozzle connected to a second end of the first tube and configured to discharge the reagent, the nozzle includes a nozzle main body having a closed tip end and a second tube made of an elastic material, the nozzle main body has a discharge hole penetrating a side surface close to the tip end and a barb provided on an outer circumferential surface close to the tip end, and the second tube is attached to the tip end of the nozzle main body and covers the barb, to be retained to the nozzle main body and close the discharge hole.