JPH0119083Y2 - - Google Patents
Info
- Publication number
- JPH0119083Y2 JPH0119083Y2 JP11582281U JP11582281U JPH0119083Y2 JP H0119083 Y2 JPH0119083 Y2 JP H0119083Y2 JP 11582281 U JP11582281 U JP 11582281U JP 11582281 U JP11582281 U JP 11582281U JP H0119083 Y2 JPH0119083 Y2 JP H0119083Y2
- Authority
- JP
- Japan
- Prior art keywords
- packing
- electrode
- lip
- inner diameter
- diameter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000012856 packing Methods 0.000 claims description 39
- 238000007789 sealing Methods 0.000 claims description 7
- 238000005259 measurement Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 6
- 239000011521 glass Substances 0.000 description 5
- 239000007788 liquid Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical class [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000001139 pH measurement Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
Description
【考案の詳細な説明】
本考案は、PH測定などのように、各種のイオン
濃度測定のために用いる電極を、その外側に位置
する支持体に固着するためのシールパツキンに関
するものである。[Detailed Description of the Invention] The present invention relates to a seal packing for fixing an electrode used for various ion concentration measurements such as pH measurement to a support located outside the electrode.
従来、この種のシールパツキンとしては、第１
図および第２図に示すような構造のものが存在し
た。第１図のものは、図から明らかなように、筒
状のパツキン本体１の外側に２本のリツプ２，３
とつまみ部４とを設け、パツキン本体１の内径
を、その長さ方向に同一にするとともに、その中
間部に２本の溝５，６を設けたものである。換言
すると、パツキン本体１の先端部内径r1、中間部
内径ｒならびに後端部内径r2を全て同一にし、か
つ、中間部の内側に２本の溝５，６を設けたもの
である。この構造のシールパツキン７にあつて
は、内側に挿入する電極の外径が規格通りの寸法
であればさほど問題はないのであるが、電極の外
径が製作誤差で若干大径になると、電極の挿入や
引き抜き時に大きな摩擦力が作用することにな
り、電極の脱着が困難になる欠点がある。逆に、
電極の外径が若干小径になると、密着性が悪く、
所望通りのシール効果を得ることができないばか
りか、場合によつては、電極が不測に抜け落ちる
欠点がある。これを改良せんとしたのが第２図に
示すもので、第１図のものと同様に、パツキン本
体１の外側には、２本のリツプ２，３とつまみ部
４とが設けられている。そして、パツキン本体１
内側の中間部に、内側に突出する２本のリツプ
８，９が設けられ、これらリツプ８，９の内径ｒ
よりも、両端部の内径r1，r2の方が大径に、か
つ、両端部の内径r1，r2が、ともに同一に構成さ
れている。この第２図のものによれば、挿入する
電極が若干大径であつても、比較的挿入や引き抜
きが容易であるという利点があるが、電極がやや
小径であると、２本のリツプ８，９のみでシール
するものであるから、シール効果が極めて悪くな
るという欠点がある。 Conventionally, as this type of seal packing, the first
There were structures as shown in Figures and Figure 2. As is clear from the figure, the one in Figure 1 has two lips 2 and 3 on the outside of the cylindrical packing body 1.
The inner diameter of the packing body 1 is made the same in the length direction, and two grooves 5 and 6 are provided in the middle part. In other words, the inner diameter r 1 of the tip end, the inner diameter r of the middle part, and the inner diameter r 2 of the rear end of the packing body 1 are all the same, and two grooves 5 and 6 are provided inside the middle part. With the seal packing 7 having this structure, there is no problem as long as the outer diameter of the electrode inserted inside conforms to the standard, but if the outer diameter of the electrode becomes slightly large due to manufacturing errors, the electrode This has the drawback that a large frictional force acts upon insertion and withdrawal of the electrode, making it difficult to attach and detach the electrode. vice versa,
If the outer diameter of the electrode becomes slightly smaller, the adhesion will be poor.
Not only is it impossible to obtain the desired sealing effect, but in some cases, the electrodes may fall out unexpectedly. An attempt to improve this is shown in Fig. 2. Similar to the one shown in Fig. 1, two lips 2, 3 and a knob 4 are provided on the outside of the packing body 1. . And Patsukin body 1
Two lips 8, 9 protruding inward are provided at the middle part of the inside, and the inner diameter r of these lips 8, 9 is
The inner diameters r 1 and r 2 of both ends are larger than that of the inner diameter r 1 and r 2 of both ends, and the inner diameters r 1 and r 2 of both ends are the same. According to the one in FIG. 2, even if the electrode to be inserted has a slightly large diameter, it has the advantage of being relatively easy to insert and pull out. However, if the electrode has a slightly small diameter, the two lips 8 , 9, the sealing effect is extremely poor.
本考案は、このような従来構造の持つ欠点を解
消し、製作誤差によつて、挿入すべき電極が若干
大径であつても小径であつても、常に電極の挿入
や引き抜きを容易に行なうことができ、しかも、
十分なシール効果を得ることのできる新規で有用
なシールパツキンを提供せんとするものである。 The present invention eliminates these drawbacks of the conventional structure and makes it easy to insert and withdraw the electrode regardless of whether the electrode to be inserted has a slightly larger or smaller diameter due to manufacturing errors. can be done, and
It is an object of the present invention to provide a new and useful seal packing that can provide a sufficient sealing effect.
本考案の実施の態様を例示図にもとづいて説明
すると、第３図は、本考案によるシールパツキン
７を、PH測定用の複合電極に使用した例を示し、
図中１０は筒状の中枢ボデイ、１１は中枢ボデイ
１０の内側に挿抜自在に配設されたコンタクトピ
ンで、このコンタクトピン１１は図外のリード線
を介してリードピン１２に接続され、このリード
ピン１２を介して図外の検出器（電圧計）に電気
的に接続されるように構成されている。１３はガ
ラス電極であつて、支持管１４、支持管１４の先
端に設けられたキヤツプ部１５、キヤツプ部１５
に突設のリードピン１６、支持管１４の下端に設
けられたガラス応答膜１７、リード線１８、内極
１９、飽和塩化カリウム溶液などの内部液２０な
どから構成されている。このガラス電極１３は、
中枢ボデイ１０の内側に形成された内部空間に下
方より着脱できるように構成されていて、嵌着し
た状態において、前記リードピン１６がコンタク
トピン１１の凹部２１に嵌合接触するように構成
されている。２２は有機物質、セラミツク状の無
機物または有機物等をコーテイングしたセラミツ
ク状の多孔質物質で形成された外壁で、この外壁
２２が比較電極の液絡部を兼ねるとともに、中枢
ボデイ１０に螺合されている。２３は飽和塩化カ
リウム溶液などからなる比較電極内部液で、この
内部液２３内には内極２４が配置され、この内極
２４は図外のリード線を介してリードピン２５に
接続されている。そして、液絡部を兼ねる外壁２
２、中枢ボデイ１０、内極２４、内部液２３など
により、比較電極２６が形成されている。２７は
試料液の温度補償を行なうための図外サーミスタ
に接続されたリードピン、２８はピンハウジン
グ、２９は金属製のキヤツプで、このキヤツプ２
９は外壁２２に螺合されている。３０はプラスチ
ツク製の電極保護キヤツプで、この保護キヤツプ
３０は中枢ボデイ１０に対して着脱自在に螺合さ
れ、螺合することによつて、イオン濃度測定用電
極の一例を示すガラス電極１３をシールパツキン
７を介して支持体の一例を示す中枢ボデイ１０に
固着するのである。 An embodiment of the present invention will be explained based on illustrative drawings. FIG. 3 shows an example in which the seal packing 7 according to the present invention is used in a composite electrode for PH measurement,
In the figure, 10 is a cylindrical central body, and 11 is a contact pin that is disposed inside the central body 10 so as to be freely inserted and removed.This contact pin 11 is connected to a lead pin 12 via a lead wire (not shown), and this lead pin It is configured to be electrically connected to a detector (voltmeter) not shown through 12. Reference numeral 13 denotes a glass electrode, which includes a support tube 14, a cap portion 15 provided at the tip of the support tube 14, and a cap portion 15.
It is comprised of a lead pin 16 protruding from the support tube 14, a glass response membrane 17 provided at the lower end of the support tube 14, a lead wire 18, an inner electrode 19, an internal liquid 20 such as a saturated potassium chloride solution, and the like. This glass electrode 13 is
It is configured so that it can be attached to and removed from below in an internal space formed inside the central body 10, and is configured such that the lead pin 16 fits into and contacts the recess 21 of the contact pin 11 in the fitted state. . Reference numeral 22 denotes an outer wall formed of a ceramic-like porous material coated with an organic substance, a ceramic-like inorganic substance, or an organic substance. There is. Reference numeral 23 denotes a comparison electrode internal solution made of a saturated potassium chloride solution, etc. An inner electrode 24 is disposed within this internal solution 23, and this inner electrode 24 is connected to a lead pin 25 via a lead wire (not shown). And an outer wall 2 that also serves as a liquid junction
2. A comparison electrode 26 is formed by the central body 10, the inner pole 24, the internal liquid 23, and the like. 27 is a lead pin connected to a thermistor (not shown) for temperature compensation of the sample liquid, 28 is a pin housing, and 29 is a metal cap.
9 is screwed to the outer wall 22. Reference numeral 30 denotes a plastic electrode protection cap. This protection cap 30 is removably screwed onto the central body 10, and by screwing it, seals the glass electrode 13, which is an example of an electrode for measuring ion concentration. It is fixed to a central body 10, which is an example of a support, via a packing 7.
この本考案に係るシールパツキン７は、例えば
四弗化樹脂をコーテイングした疎水性物質から形
成され、第４図に示すように、筒状のパツキン本
体１の外側に、外側に突出する２本のリツプ２，
３とつまみ部４とが設けられている。８，９はパ
ツキン本体１の内側中間部に設けられた２本のリ
ツプで、内側に突出し、かつ、外側のリツプ２，
３とは若干ずれた位置に設けられている。これら
両リツプ８，９の内径は同一で、かつ、挿入され
るべき電極１３の製作誤差を考慮して、電極１３
の外径が最大の場合よりもさらに若干小径であ
り、電極１３の外径が最大の場合には、リツプ
８，９の変形で吸収するように構成されている。
つまみ部４側のリツプ９からつまみ部４側のパツ
キン本体１端部、換言するとパツキン後端部にか
けては、その内面が約２度程度のテーパ面に構成
され、パツキン後端部の内径R2が、リツプ８，
９の内径Ｒよりもさらに小径になるように構成さ
れている。同様に、パツキン先端部も、先端部側
のリツプ８部分から、その内面が約２度程度のテ
ーパ面に構成されるとともに、先端部近くに内側
に突出するリツプ３１が設けられ、リツプ３１の
内径であるパツキン先端部の内径R1が後端部の
内径R2よりもさらに小径になるように構成され
ている。そして、パツキン本体１の外面において
も、つまみ部４からパツキン後端部にかけて約２
度、パツキン先端部側の外側リツプ２からパツキ
ン先端部にかけて約10度のテーパ面に構成され、
パツキン両端部の肉厚が、パツキン中間部の肉厚
よりも薄くなるようにされているのである。この
ように、パツキン両端部の肉厚が薄くて変形しや
すいので、この両端部の内径R1，R2が、電極１
３の最小外径よりも若干小径なリツプ８，９の内
径Ｒよりさらに小径であるにもかかわらず、電極
１３の挿入や引き抜きが容易で、しかも、挿入し
た状態では、十分なるシール効果が期待できるの
である。なお、実施例においては、パツキン先端
部にのみ内側リツプ３１を設けたものを示した
が、パツキン後端部の内側にも同様なリツプを設
けて実施することも可能である。 The seal packing 7 according to the present invention is made of a hydrophobic material coated with, for example, a tetrafluoride resin, and as shown in FIG. Lip 2,
3 and a knob portion 4 are provided. Reference numerals 8 and 9 denote two lips provided at the inner middle part of the packing body 1, which protrude inwardly and are connected to the outer lips 2, 9.
It is located at a position slightly shifted from 3. The inner diameters of both of these lips 8 and 9 are the same, and considering the manufacturing error of the electrode 13 to be inserted, the electrode 13 is
The outer diameter of the electrode 13 is slightly smaller than the case where the outer diameter is the maximum, and when the outer diameter of the electrode 13 is the maximum, the lip 8, 9 is configured to absorb the deformation.
From the lip 9 on the knob 4 side to the end of the packing body 1 on the knob 4 side, in other words, to the rear end of the packing, the inner surface is tapered approximately 2 degrees, and the inner diameter R 2 of the rear end of the packing But lip 8,
It is configured to have an even smaller diameter than the inner diameter R of No. 9. Similarly, the tip of the packing has a tapered surface of about 2 degrees on its inner surface starting from the lip 8 on the tip side, and is provided with a lip 31 that protrudes inward near the tip. The inner diameter R1 of the tip of the packing is smaller than the inner diameter R2 of the rear end. Also, on the outer surface of the packing body 1, approximately 2
The tapered surface is approximately 10 degrees from the outer lip 2 on the tip of the packing to the tip of the packing.
The wall thickness at both ends of the packing is made thinner than the wall thickness at the middle portion of the packing. In this way, the inner diameters R 1 and R 2 of both ends of the packing are thin and easily deformed, so the inner diameters R 1 and R 2 of the ends of the electrode 1
Although the diameter is smaller than the inner diameter R of lips 8 and 9, which is slightly smaller than the minimum outer diameter of electrode 3, it is easy to insert and pull out the electrode 13, and when inserted, a sufficient sealing effect can be expected. It can be done. In the embodiment, an inner lip 31 is provided only at the leading end of the packing, but it is also possible to provide a similar lip inside the rear end of the packing.
次に、具体的な数値を示しながら、本考案者が
製作した試作品について説明すると、その試作品
は６±0.2mmの外径を有する電極１３用のシール
パツキン７で、内側のリツプ８，９の内径Ｒが
5.55〜5.70mm、内側リツプ８，９の付け根部の内
径が6.1mm、パツキン後端部の内径R2が5.55〜5.70
mm、パツキン先端部、つまり内側リツプ３１の内
径R1が５±0.1mmであつた。のシールパツキン７
を用いて、５Kg／cm2〜０Kg／cm2の加圧・常圧の繰
り返し水圧テストや10Kg／cm3の水圧テストを行つ
たところ、十分なるシール効果が得られることが
判明した。念のため、このシールパツキン７に外
径が5.5cmの電極１３を挿入してテストを行つて
みたところ、５Kg／cm2の水圧に対しても十分に耐
え得ることが判明した。 Next, I will explain the prototype produced by the present inventor while showing specific numerical values.The prototype is a seal packing 7 for an electrode 13 having an outer diameter of 6±0.2 mm, and an inner lip 8, The inner diameter R of 9 is
5.55 to 5.70 mm, the inner diameter of the base of inner lips 8 and 9 is 6.1 mm, and the inner diameter R 2 of the rear end of the seal is 5.55 to 5.70.
mm, and the inner diameter R1 of the packing tip, that is, the inner lip 31, was 5±0.1 mm. Seal packing 7
When a water pressure test of 5 Kg/cm 2 to 0 Kg/cm 2 of pressurized and normal pressure was repeated and a water pressure test of 10 Kg/cm 3 was conducted using the same, it was found that a sufficient sealing effect could be obtained. Just to be sure, we inserted an electrode 13 with an outer diameter of 5.5 cm into this seal packing 7 and conducted a test, and it was found that it could sufficiently withstand water pressure of 5 kg/cm 2 .
以上の説明から明らかなように、本考案による
シールパツキンは、筒状シールパツキンの両端部
のうちの少なくとも一端部と中間部とに、内側に
突出するリツプを設け、パツキン両端部の内径
を、中間部に設けたリツプの内径よりも小径に
し、かつ、パツキン両端部の肉厚を中間部の肉厚
よりも薄くするものであるから、挿入すべき電極
の外径に製作誤差によつて若干のばらつきがあつ
ても、常に電極の挿入や引き抜きが容易に行ない
得て、しかも、所望通りの十分なシール効果が期
待できるのである。 As is clear from the above description, the seal gasket according to the present invention is provided with a lip projecting inward at at least one of the ends of the cylindrical seal gasket and at the intermediate portion, and the inner diameter of both ends of the gasket is Since the diameter is smaller than the inner diameter of the lip provided in the middle part, and the wall thickness at both ends of the packing is thinner than the wall thickness at the middle part, the outer diameter of the electrode to be inserted may vary slightly due to manufacturing errors. Even if there are variations in the electrode, insertion and withdrawal of the electrode can be easily performed at all times, and a sufficient sealing effect as desired can be expected.
図面は本考案に係るイオン濃度測定用電極のシ
ールパツキンを設明するためのもので、第１、第
２図は従来構造を示す断面図、第３図は全体の一
部切欠き断面図、第４図は要部の断面図である。
７……シールパツキン、８，９……中間部のリ
ツプ、１０……支持体、１３……ガラス電極（イ
オン濃度測定用電極の一例）、Ｒ……中間部のリ
ツプの内径、R1，R2……パツキン両端部の内径。
The drawings are for illustrating the seal packing of the electrode for measuring ion concentration according to the present invention, and FIGS. 1 and 2 are sectional views showing the conventional structure, and FIG. 3 is a partially cutaway sectional view of the entire structure. FIG. 4 is a sectional view of the main part. 7... Seal packing, 8, 9... Lip in the middle part, 10... Support, 13... Glass electrode (an example of an electrode for measuring ion concentration), R... Inner diameter of the lip in the middle part, R 1 , R 2 ……Inner diameter of both ends of the packing.
Claims (1)
の筒状のシールパツキンであつて、そのパツキン
両端の少なくとも一端部と、パツキンの中間部と
に、それぞれ内側に突出するリツプを設け、その
パツキン両端部の内径を、前記中間部に設けたリ
ツプの内径よりも小径にするとともに、パツキン
両端部の肉厚を、パツキン中間部の肉厚よりも薄
くしてあることを特徴とするイオン濃度測定用電
極のシールパツキン。 A cylindrical seal packing for fixing an electrode for ion concentration measurement to a support, and has a lip protruding inwardly at at least one of both ends of the packing and a middle part of the packing, and both ends of the packing are For ion concentration measurement, the inner diameter of the lip is smaller than the inner diameter of the lip provided in the middle part, and the wall thickness of both ends of the packing is thinner than the wall thickness of the middle part of the packing. Electrode sealing pad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11582281U JPS5821852U (en) | 1981-08-01 | 1981-08-01 | Seal packing for electrodes for measuring ion concentration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11582281U JPS5821852U (en) | 1981-08-01 | 1981-08-01 | Seal packing for electrodes for measuring ion concentration |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5821852U JPS5821852U (en) | 1983-02-10 |
| JPH0119083Y2 true JPH0119083Y2 (en) | 1989-06-02 |
Family
ID=29910076
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11582281U Granted JPS5821852U (en) | 1981-08-01 | 1981-08-01 | Seal packing for electrodes for measuring ion concentration |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5821852U (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013221805A (en) * | 2012-04-13 | 2013-10-28 | Horiba Ltd | Exhaust gas analyzer and probe unit |
| US10823695B2 (en) | 2014-01-31 | 2020-11-03 | Hitachi High-Technologies Corporation | Flow-type ion selective electrode, electrolyte concentration measuring device using the same, and biochemical automatic analyzer |
-
1981
- 1981-08-01 JP JP11582281U patent/JPS5821852U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5821852U (en) | 1983-02-10 |
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