JPH0631417Y2 - Flow type ion electrode - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a flow-through type ion electrode.

[Prior Art] Conventionally, for measuring one sample with a plurality of electrodes, for example, as shown in FIG. 5, a flow-through type cell 50 having a through hole 51 through which a sample flows is formed in the through hole 51. Further, a plurality of holes 52 ... Are provided in a direction orthogonal to and facing each other, and these holes 52 ...
The electrodes 54 having the sensitive film 53 are attached to each of them.

[Problems to be solved by the device]

However, according to the above-mentioned conventional technique, the operation is troublesome, such as the mounting and demounting of the electrodes 54 ... Is complicated, and the electrodes 54 ...
There is a problem that a pressing ring 55 for fixing the components and a sealing member 56 such as packing are required, and the number of parts is large and the cost is high.

The present invention has been made in view of the above matters, and an object thereof is to provide a flow-type ion electrode that is easy to operate, has a simple structure, and is inexpensive.

[Means for Solving the Problems]

In order to achieve the above-mentioned object, the flow-through type ion electrode according to the present invention has a through hole through which a sample flows and a diaphragm electrode provided so as to face the through hole on one end surface of a block body. An annular seal portion is formed in a state of surrounding the through hole, and a convex shape and a concave groove that engage with each other in an inverted trapezoidal shape having the same vertical section are formed on the one end surface and the corresponding other end surface. The end faces are formed over substantially the entire length in one direction and one on each side of the seal portion so that the block bodies can be detachably connected to each other through the ridges and the groove.

[Action]

According to the above configuration, the structure is simple and inexpensive, and the operation of connecting / separating the block bodies can be performed easily and reliably, so that the above object is completely achieved.

〔Example〕

 An embodiment of the present invention will be described below with reference to the drawings.

1 and 2 show a flow-type ion electrode according to a first embodiment of the present invention, more specifically, FIG. 1 is an exploded perspective view showing a case where two flow-type ion electrodes are connected, The figure is a longitudinal sectional view showing a state in which three flow-through type ion electrodes are connected.

1 and 2, D is a flow-type ion electrode,
Reference numeral 1 denotes the block body 1, which is made of an appropriate synthetic resin and is formed in, for example, a rectangular parallelepiped. Further, inside the block body 1, there are provided a through hole 2 and a diaphragm electrode 3 which are formed from one end face 1A to the other end face 1B facing each other and have a circular cross section, for example.

The through hole 2 is a sample flow passage, and a diaphragm electrode 3 is provided.
Is for measuring a specific ion (or gas or enzyme) contained in the sample flowing through the through hole 2, and is formed as follows, for example. That is, a hole (not shown) having a predetermined size is formed so as to communicate with the through hole 2 in a direction orthogonal to the through hole 2, and a polymer material is formed at the bottom of the hole, that is, a position facing the through hole 2. After arranging a thin sensitive film 4 consisting of the above, a predetermined amount of KCl solution 5 and A as an electrolyte solution and A
Since the inner pole 6 made of g / AgCl is provided, the inner pole 6 and the external connection portion 8 are connected by the lead wire 7, and the space portion of the hole is backfilled with the same synthetic resin as that of the block body 1. is there.

Reference numeral 9 denotes a seal portion provided on one end surface 1A of the block body 1, which is formed by fitting a seal member 11 such as an O-ring into a seal member groove 10 formed so as to surround the through hole 2 on the end surface 1A. Has been done.

Denoted at 12 and 13 are, on the end face 1A and the other end face 1B corresponding to the end face 1A, one protrusion formed on each side of the seal portion 9 and engaging with each other. It is a concave groove having the surfaces 13a, 13a, and the vertical cross sections of the convex strip 12 and the concave groove 13 have the same inverted trapezoidal shape. The ridge 12 and the concave groove 13 are formed in parallel with each other and in one direction of the end faces 1A and 1B (in the illustrated example, in the direction parallel to the short sides of the end faces 1A and 1B) over the entire length thereof. Further, in this embodiment, the ridge 12 and the concave groove on the one end face 1A are
The groove 13 and the ridge 12 on the other end face 1B are provided so as to correspond to each other.

In order to connect the flow-through type ion electrodes D ... As configured above, first, after fitting the seal member 11 into the seal member groove 10 formed in the end face 1A of the flow-through type ion electrode D, As shown in FIG. 1, one flow-type ion electrode D (upper flow-type ion electrode D in the figure) has a groove 13 and a ridge 12 formed on an end face 1B thereof, and another flow-type ion electrode D ( In the same figure, the lower flow-type ion electrode D is moved in the direction indicated by the arrow in the figure in a state where the ridges 12 and the concave grooves 13 formed on the end surface 1A of the lower flow-type ion electrode D) are associated with each other. Then, the convex strip 12 is fitted into the concave groove 13, and the two flow-through type ion electrodes D are connected in a predetermined state. By connecting in the same manner, as shown in FIG. 2, a plurality of flow-through type ion electrodes D ... Are connected in a state where the through holes 2 are connected via the seal portion 9. In order to separate the connected flow-type ion electrodes D ..., A force may be applied to the flow-type ion electrodes D in the direction of forming the ridges 12 and the grooves 13.

That is, the connection between the flow-type ion electrodes D ... Is stable, no distortion occurs at the connection surface, and the flow-type ion electrodes D cannot be disengaged unless force is applied again in the direction of forming the ridges 12 and the grooves 13.

Then, by connecting a plurality of flow-through type ion electrodes D ... In which the sensitive films 4 of the diaphragm electrode 3 are different, it is possible to measure a plurality of components contained in one sample.

3 and 4 show a second embodiment of the present invention,
In this embodiment, two ridges 12, 12 are provided on one end face 1A of the block body 1, and two concave grooves 13, 13 corresponding to the ridges 12, 12 are provided on the other end face 1B. Although not shown, in this second embodiment, two concave grooves 13, 13 may be provided on one end face 1A and two convex stripes 12, 12 may be provided on the other end face 1B.

The number of the convex stripes 12 and the concave grooves 13 formed on the end faces 1A and 1B may be three or more, respectively. Moreover, the number of taper surfaces in each of the ridge 12 and the groove 13 may be one.

The sealing member 11 is made of, for example, silicone rubber having a good sealing property.

[Effect of device]

As described above, the flow-through type ion electrode according to the present invention has a through-hole through which a sample flows and a diaphragm electrode provided so as to face the through-hole, and the through-hole is penetrated to one end surface of the block body. While forming an annular seal portion in a state of surrounding the hole, the one end face and the other end face corresponding to the one end face, a convex shape and a concave groove engaging with each other in an inverted trapezoidal shape having the same vertical cross section, Over the entire length of the end face in one direction,
Also, one is formed on each side of the seal portion, and the block bodies are detachably connectable via these ridges and grooves, so the structure is simple and inexpensive,
Moreover, the operation of connecting / separating the block bodies can be easily performed. Further, in particular, since the convex strips and the concave grooves having the same vertical cross section are formed over substantially the entire length in one direction of the end faces of the block body, the block body mutual mutual deformation does not occur at the connecting surface. Can be reliably connected.

[Brief description of drawings]

1 and 2 show a first embodiment of the present invention. FIG. 1 is an exploded perspective view when two flowable ion electrodes are connected, and FIG. 2 shows three flowable ion electrodes. It is a longitudinal cross-sectional view showing a connected state. FIGS. 3 and 4 show a second embodiment of the present invention, FIG. 3 is an exploded perspective view when two flow-type ion electrodes are connected, and FIG. 4 shows three flow-type ion electrodes. It is a longitudinal cross-sectional view showing a connected state. FIG. 5 is a sectional view for explaining the conventional technique. D: Flowing ion electrode, 1 ... Block body, 1A, 1B ...
… End face, 2 …… Through hole, 3 …… Differential type electrode, 9 …… Seal part, 12 …… Convex strip, 13 …… Concave groove.

Claims (1)

[Scope of utility model registration request] 1. A ring-shaped seal portion is formed on one end surface of a block body having a through-hole through which a sample flows and a diaphragm electrode provided so as to face the through-hole, in a state of surrounding the through-hole. Along with the one end face and the other end face corresponding thereto, a convex shape and a concave groove engaging with each other in the same inverted trapezoidal vertical cross section, over substantially the entire length in one direction of the end face, In addition, a flow-through type ion electrode is characterized in that one block is formed on each side of the seal portion so that the block bodies can be detachably connected to each other through the ridges and the groove.