JPH0718251U - Turbidity sensor - Google Patents

Abstract

(57) [Summary] [Purpose] The objective is to obtain a turbidity sensor that does not require maintenance and can accurately detect turbidity. [Structure] In a sealed container 2, a pair of sensors 3A,
3B are horizontally opposed to each other, and a nozzle 4 for supplying the sample water W is arranged above the measurement axis 3C, and the turbidity of only the sample water is measured.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to improvement of a turbidity sensor used for water quality inspection.

[0002]

[Prior art]

 Conventionally, there is a turbidity sensor as a device for inspecting the water quality of material water such as tap water.As this turbidity sensor, the material water is circulated in a transparent pipe, and the transparency is measured from outside the pipe with, for example, an optical sensor. Things are known.

[0003]

[Problems of conventional technology]

 However, in the conventional turbidity sensor, water stains may adhere to the inside of the transparent tube during long-term use, and if such contamination occurs, accurate turbidity detection becomes impossible. Also, when cleaning these turbidity sensors, it is necessary to keep the cleaning tools clean, and maintenance and inspection are troublesome.

[0004]

[Problems to be solved by the device]

 In view of the above problems, the present invention has been made for the purpose of obtaining a turbidity sensor that does not require maintenance and management and can accurately detect turbidity.

[0005]

[Means for Solving the Problems]

 That is, in the turbidity sensor 1 of the present invention, a pair of sensors 3A and 3B are horizontally opposed to each other in a sealed container 2, and a nozzle 4 for supplying the sample water W is provided above the measurement axis 3C. It is characterized by being arranged.

[0006]

【Example】

 Next, an embodiment of this invention will be described. FIG. 1 is a sectional view of an embodiment of the present invention.

In the turbidity sensor 1 of the present invention, a pair of sensors 3A and 3B are horizontally opposed to each other in a sealed container 2, and a nozzle for supplying a sample water W above the measurement axis 3C. 4 are arranged and configured. In the above-mentioned embodiment, reference numeral 5 in the drawing denotes an outlet for guiding the material water W to the outside.

In the above embodiment, the closed container 2 has a simple rectangular shape, but as shown in FIG. 2 depending on the supply amount of the material water W and the configurations of the sensors 3A and 3B. The shape can be made efficient. Note that, in FIG. 2, each component is different only in shape, and therefore, the same reference numerals as those in FIG. 1 are given and detailed description thereof is omitted.

[0009]

[Action]

 When detecting the turbidity of the water quality by the turbidity sensor 1 of the present invention, the transparency of the reference water W is measured by letting the target reference water flow down from the nozzle 4 in the form of a line or water drops and crossing the measurement axis 3C. . At this time, the sample water W simply flows down or drops in the air inside the closed container 2 and there is nothing between the sensors 3A and 3B, and the light emitting and receiving surfaces of the sensors 3A and 3B are also in non-contact with the sample water W. Since the environment including the sensors 3A, 3B and the nozzle 4 is shielded from the external environment by the hermetically sealed container 2, no dust is mixed between the measurement axes. Therefore, only the transparency of the sample water W can be measured.

[0010]

[Effect of device]

 As described above, this device measures only the transparency of the sample water that flows down or drops in the closed container when measuring the transparency of the sample water, so there is no error due to light absorption due to dirt on the inner surface of the cell. It enables extremely accurate turbidity measurement. Further, since the sensors and the like are not in contact with the sample water, there is no fear that these measuring devices will be contaminated and the maintenance will be easy.

[Brief description of drawings]

FIG. 1 is a sectional view of an embodiment of the present invention.

FIG. 2 is a cross-sectional view of another embodiment.

[Explanation of symbols]

 1 ... Turbidity sensor 2 ... Sealed container 3A, 3B ... Sensor-3C ... Measuring axis 4 ... Nozzle 5 ... Material water outlet W ... Material water

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tetsuya Tatsumi 2-26 Ohama-cho, Amagasaki City, Hyogo Prefecture Kubota Mukogawa Works, Ltd.

Claims (1)

[Scope of utility model registration request] 1. A pair of sensors 3 in a closed container 2.
A and 3B are horizontally opposed to each other, and their measurement axis 3C
A turbidity sensor characterized in that a nozzle 4 for supplying the reference water W is arranged in the middle upper part of the above.