JPH0351739Y2 - - Google Patents

Description

[Detailed explanation of the idea] (Industrial application field) The present invention relates to an electrode with a stirring mechanism.

(Prior Art) In electrodes such as dissolved oxygen meters, in order to perform stable measurements, a water flow at a constant flow rate is applied to the electrode sensor section.

FIGS. 3 and 4 show conventional technical means for obtaining an agitated water flow. In FIG. 3, a motor 41
A container 44 containing a test liquid 43 is placed on top of a stirrer 40 equipped with a permanent magnet 42 rotated by a stirrer 40, and a rotor 45 made of a permanent magnet or the like is placed at the bottom of the container 44. The electrode 46 is inserted from above the container 44, the electrode sensor part 47 is immersed in the test liquid 43, the permanent magnet 42 is rotated by the rotation of the motor 41, and the rotor 45 is rotated by this rotation. A predetermined stirring water flow is supplied to the sensor section 47.

Further, in FIG. 4, a cover body 48 is provided at the end of the electrode 46 so as to surround the electrode sensor part 47, and inside this cover body 48 there is a power supply 49, a motor 50, and a permanent motor rotated by the motor 50. magnet 5
1. A rotor 52 made of a permanent magnet or the like is provided, and a third rotor 52 is provided.
Similarly to what is shown in the figure, the rotor 52 is rotated by the motor 49, and the sample liquid 43 inside the cover body 48 is rotated.
is stirred, and a stirred water flow is supplied to the electrode sensor section 47.

<Problems to be solved by the invention> However, in the case shown in FIG.
The distance between the rotor 45 and the electrode sensor section 47 changes depending on the shape and size of the electrode sensor section 4, and there is a drawback that a stirring water flow of a constant strength cannot be supplied to the sensor section 47.

Further, in the case shown in FIG. 4, although the distance between the electrode sensor section 47 and the rotor 52 can be kept constant, the motor 50 cannot be operated for a long time with the power supply 49 having a normal capacity. When power is supplied from the outside, a separate supply line must be prepared for this purpose, which has the disadvantage of complicating the waterproof and insulating structure and increasing the number of components.

The present invention was developed in consideration of the above-mentioned circumstances, and it is possible to always provide a stable stirring water flow to the electrode sensor section regardless of the shape of the container containing the test liquid, and it is compact with a small number of parts. The purpose of the present invention is to provide an electrode with a stirring mechanism.

(Means for solving the problem) In order to achieve the above-mentioned object, in the present invention, an electromagnet is provided in the main body to which the electrode sensor section is attached, and an electromagnet is provided at the end of the main body so as to surround the electrode sensor section. The stirring body is provided with a permanent magnet and a water flow hole, and by applying an alternating current to the electromagnet, the stirring body is rotated or moved up and down, so that a stirred water flow can be supplied to the electrode sensor. ing.

(Example) Hereinafter, an example of the present invention will be described based on FIGS. 1A, B, and C.

Reference numeral 1 denotes a cylindrical electrode main body, and an electrode sensor section 2 made of, for example, a film made of tetrafluoroethylene resin is attached to the lower end of the main body. Reference numerals 3 and 4 denote a pair of electromagnets located near the lower end of the main body 1 symmetrically along the circumferential direction of the main body 1. That is, a conductive wire is wound around a pair of fan-shaped iron cores 5 and 6 that are arranged point-symmetrically with respect to the axial center O of the main body 1,
Coils 7 and 8 are formed respectively, and both coils 7 and 8 are formed.
are connected in series with each other, and the magnetic poles located at point-symmetrical positions exhibit the same polarity (see FIG. 1B).

In addition, 9 is a signal line from the electrode sensor section 2, 1
0 and 11 are lead wires for supplying alternating current to the electromagnets 3 and 4, and 12 is a cable to an indicator (not shown), an AC power source, etc.

Reference numeral 13 denotes a substantially cylindrical stirrer provided at the end of the main body 1 so as to surround the electrode sensor section 2, the upper part of which protrudes inward, and the lower surface 1 of this protruding part.
3A in the circumferential direction of the main body 1 (for example, 4
) is abutted on and supported by the provided pins 14.

A pair of permanent magnets 15 and 16 are provided above the stirring body 13 to face the electromagnets 3 and 4. That is, sector-shaped permanent magnets 15 and 16 are arranged along the circumferential direction of the stirring body 13 so that the magnetic poles at symmetrical positions have the same polarity (see FIG. 1B).

A bottom plate 17 is formed at the bottom of the stirring body 13, and a plurality of water flow holes 19 are formed in the bottom plate 17 for guiding and introducing the test liquid into the internal space 18 of the stirring body 13. has been done. The water flow holes 19 have different opening positions on the upper surface and the lower surface of the bottom plate 17, and the agitator 13
When it rotates or pivots, a swirling flow is generated in the internal space 18 by passing through the water flow hole 19 (see FIG. 1C). Further, water flow holes 21 for discharging the test liquid are appropriately formed in the side wall 20 of the stirring body 13.

In the electrode with a stirring mechanism configured as described above, when the electrode is immersed in the test liquid and an alternating current is applied to the coils 7 and 8, a repulsive force is generated between the electromagnets 3 and 4 and the permanent magnets 15 and 16. The stirring body 13 rotates or rotates around the axial center O of the body 1, and as a result, the test liquid that has passed through the water flow hole 19 swirls in the internal space 18 of the stirring body 13. The stirring water flow is supplied to the electrode sensor section 2. This allows the sensor section 2 to perform stable measurements.

Note that blades may be formed at the bottom of the stirring body 13 to generate a swirling flow.

FIGS. 2A and 2B show an embodiment of the present invention, and the same or equivalent parts as in FIG. 1 are given the same reference numerals and the explanation thereof will be omitted. In this embodiment, the stirring body 25 is attached by set screws 26, 26 so as to move up and down in the same direction as the axial direction of the main body 1. That is, the set screws 26, 26 are installed on the outer periphery of the lower end of the main body 1, and elongated holes 28, 28 are vertically opened in the side wall 27 of the stirring body 25. , 26 are loosely fitted. Note that the long holes 28, 28
also has the function of a water flow hole for discharging the test liquid. 29 is an electromagnet disposed around the lower end of the main body 1, and 30 is a lead wire thereof. 3
1 is a permanent magnet disposed above the stirring body 25. Reference numeral 32 denotes a water flow hole formed in the side wall 27 of the stirring body 25, and is a hole for guiding and introducing the test liquid into the internal space 33 of the stirring body 25. Reference numeral 34 denotes a bottom plate, which is sloped upward from the side wall 27 toward the center, and has a water flow hole 35 at its top.

In the electrode with a stirring mechanism configured as described above, when the electrode is immersed in the liquid to be tested and an alternating current is applied to the electromagnet 29, the polarity of the magnetic poles at both the upper and lower ends of the electromagnet 29 is reversed at a constant period. As a result, a repulsive force or an attractive force acts between the electromagnet 29 and the permanent magnet 31, and the stirring body 25 moves up and down by the length regulated by the elongated hole 28. As a result, the test liquid flows into the internal space 33 of the stirring body 25 through the water flow hole 35 formed in the bottom plate 34, and the electrode sensor section 2
It is possible to supply a stable water flow in a fixed direction. And the water flow hole 3 opened in the side wall 27
The test liquid flowing into the internal space 33 through the agitator 25 is also appropriately agitated by the vertical movement of the agitator 25.

Although the bottom plate 34 of the stirring body 25 is inclined, it may be horizontal.

(Effects of the invention) As detailed above, in the present invention, an electromagnet is provided in the main body to which the electrode sensor section is attached, and a permanent magnet is installed in the stirring body provided at the end of the main body so as to surround the electrode sensor section. A magnet and a water flow hole are provided, and by applying an alternating current to the electromagnet, the stirring body can be rotated or moved up and down to supply a stirring water flow to the electrode sensor. A stable stirring water flow at a constant flow rate can always be supplied to the electrode sensor section regardless of the size of the storage container, etc., and therefore stable measurements can be performed. In addition, the number of parts including the motor is small and the configuration is simple, making this type of electrode compact. Further, since the power supply line to the electromagnet is provided within the electrode body, there are practical effects such as extremely simplifying the insulation and waterproof configuration.

[Brief explanation of the drawing]

FIGS. 1A, B, and C show an example of the structure of an electrode with a stirring mechanism according to the present invention, FIG. FIG. 1C is a sectional view taken along line C--C of FIG. 1A, FIGS. 2A and B show other embodiments of the present invention, and FIG. Fig. 2B is a perspective view of the stirring body, Figs.
Each figure is a configuration diagram showing a conventional example. 1... Main body, 2... Electrode sensor section, 3, 4, 2
9... Electromagnet, 13,25... Stirring body, 19,2
1, 28, 32, 35...water flow holes.

Claims (1)

[Scope of utility model registration request] An electromagnet is provided in the main body to which the electrode sensor part is attached, a permanent magnet and a water flow hole are provided in the stirring body provided at the end of the main body so as to surround the electrode sensor part, and an alternating current is applied to the electromagnet. An electrode with a stirring mechanism, characterized in that the stirring body is rotated or moved up and down to supply a stirring water flow to the electrode sensor.