JPS6032601Y2 - Portable residual chlorine meter - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a portable residual chlorine meter that generates an ideal laminar flow without using a powered stirring mechanism and provides stable and accurate readings.

In general, residual chlorine meters that use the electromotive force of a galvanic cell consume the chlorine as a result of measuring residual chlorine, so when measuring by immersing it in still water, the chlorine around the electrode is consumed until the reading becomes stable. , the indicated value will decrease.

In order to prevent such a phenomenon, it is essential that the electrode surface is constantly in contact with the flow, and various stirring mechanisms are used for this purpose.

Furthermore, irregular agitation causes turbulent flow, resulting in uneven contact between the electrode and water, and variations in battery output. Therefore, a mechanism has been proposed in which a suitable laminar flow is generated by motor agitation.

However, portable residual chlorine meters are required to be lightweight and easy to use anywhere, and since AC power cannot necessarily be expected near the place of use, a dry battery is used to drive the motor, which allows the motor to rotate. A method was used in which the water was converted into a stirring motion.

This method consumes a lot of battery power and requires frequent battery replacement.

Furthermore, with conventional batteries, the surface of the battery dries out when not in use.
The disadvantage of using this method is that it requires immersion for a while until the electrode surface returns to its proper state.

The purpose of this invention is to solve the above-mentioned problems.By inserting the residual chlorine meter body into water, an ideal rising water flow is generated on the electrode surface due to the water level difference, and accurate indications can be obtained without using motor stirring. The purpose is to provide a portable residual chlorine meter that can obtain values.

Hereinafter, the present invention will be described in detail by way of examples with reference to the drawings.

FIG. 1 is a sectional view along the center line with a portion of the electrode rod and indicator removed, and FIG. 2 is an enlarged sectional view along the center line of the electrode rod.

Reference numeral 1 denotes an indicator, which has a display plate 2 on its front surface and an electrode rod 3 protruding from its lower surface.

The electrode rod 3 is a hollow cylindrical body made of an insulating material, and an anode 4 and a cathode 5 are separately wound around the tip surface of the electrode rod 3.
The lead wire 6 from the electrode rod 3 and the lead wire 7 from the cathode 5 are insulated and separated from each other and guided through the space within the electrode rod 3 to the indicator.

A cylindrical body 8 surrounds the electrode rod 3 and is open at the upper end to form an overflow port 9.

The overflow port 9 is lower than the attachment position of the electrode rod 3 to the indicator 1,
The position should be higher than the cathode electrode.

A case 10 is provided that surrounds the lower part of the cylinder 8, the electrode rod 3, and the indicator 1, and the lower surface of the cylinder 3 is fixed to the bottom of the case 10 in a watertight manner. An introduction hole 11 is provided.

Reference numeral 12 denotes a screw 13 that is screwed into the water test introduction hole 11 when not in use.

A portion surrounded by the cylindrical body 8 and the case 10 is a test water storage portion 12.

15 is a water outlet for discharging the sample water stored in the sample water storage section, and 14 is a screw that is screwed into the water outlet 15.

16 is a backing.

In this embodiment, the lower surface of the indicator 1 is made to protrude circularly,
This protrusion 17 and the case 10 are screwed together, and the backing 18
The case 10 is kept watertight, and the case 10 can be removed together with the cylindrical body 8 when necessary.

Platinum and other precious metals or their alloys are commonly used as anode materials, and copper, silver chloride, etc. are commonly used as cathode materials, but are not limited to these. Both require a certain level of durability.

The configuration is as described above, and the effects will be explained below.

When the screw 14 is screwed into the water outlet 15 and the tip of the case 10 is immersed in the test water deeper than the overflow port 9, the test water will flow from the test water introduction hole 11 into the cylinder due to the water level difference between the test water introduction hole 11 and the water surface. 8, and a constant rising water flow is generated around the positive and negative electrodes 4 and 5.

The test water soon rises to the overflow port 9, falls from the overflow port 9, and is stored in the test water storage section 12.

The space between the electrode rod 3 and the cylindrical body 8 is larger than that of the sample water storage section 12.
Because it is extremely narrow and the test water introduction hole 11 is also narrow, the water that overflows the overflow port 9 is stored in the test water storage section 12, and it takes a considerable amount of time to cross the overflow port 9. During this time, an ideal laminar flow corresponding to the water level difference between the overflow port 9 and the test water surface is generated around the cathode 5 and anode 4, so that an accurate measurement value of residual chlorine can be obtained.

According to this embodiment, the test water storage section 12 has a capacity that allows measurements to be taken several times.

When the water level of the test water reservoir 12 reaches the overflow port 9, screw 1
4 is opened to release the water in the water test reservoir 12, and then the screw 14 is screwed on and used again.

Furthermore, according to the present invention, no power is required to obtain an ideal laminar flow around the electrodes, and the battery in the indicator 1 is only used to amplify the potential difference, so a small battery is used. It can be used for a long period of time and can be used safely without any damage to the stirring mechanism.

Furthermore, the sensitivity of the electrode decreases if it is left in the air, but according to the present invention, the test water introduction hole 11 can be closed with the screw 13 after use.
When the water in the test water reservoir 12 is discharged from the water outlet 15, the space between the electrode rod 3 and the cylinder body 8 is narrow, so even if the electrode rod 3 is turned over or upside down, it will not easily spill, and even if it spills, it will not be discharged. If the water port 15 is closed with the screw 14, there is no risk of wetting the surrounding area, and the electrode can be kept wet for a long time.

Therefore, accurate instructions are given immediately at the time of measurement.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a sectional view taken along the center line with parts of the electrode rod and indicator removed, and FIG. 2 is a sectional view of the electrode rod. In the drawing, 1 is an indicator, 3 is an electrode, 4 is an anode, 5 is a cathode, 8 is a cylinder, 9 is an overflow port, 10 is a case, 11 is a sample water introduction hole, and 12 is a sample water storage part. be.

Claims (1)

[Scope of utility model registration request] Positive and negative electrodes are attached to an electrode rod that protrudes downward from the indicator, separated from each other by an insulator, and lead wires from each electrode are separated and guided to the indicator, while at a higher position than the positive and negative electrodes. A cylindrical body having an open overflow port and a sample water introduction hole penetrating to the outside at a position lower than the positive and negative electrodes surrounds the electrode rod, and a sample water storage portion is provided below the overflow port of the cylinder body. A portable residual chlorine meter characterized by being equipped with.