CN108802128B - High-precision electrochemical sensor convenient for liquid pumping - Google Patents
High-precision electrochemical sensor convenient for liquid pumping Download PDFInfo
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- CN108802128B CN108802128B CN201810433858.5A CN201810433858A CN108802128B CN 108802128 B CN108802128 B CN 108802128B CN 201810433858 A CN201810433858 A CN 201810433858A CN 108802128 B CN108802128 B CN 108802128B
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- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/28—Electrolytic cell components
- G01N27/283—Means for supporting or introducing electrochemical probes
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
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Abstract
The invention discloses a high-precision electrochemical sensor convenient for liquid pumping, which comprises an induction shell with a reaction cavity, wherein a cover plate is arranged at the upper end of the induction shell, a suction hole is formed in the lower end of the induction shell, three electrode plates made of different materials are arranged on the cover plate, the three electrode plates are connected with the cover plate and extend into the reaction cavity, the cross section of the reaction cavity is circular, three positioning grooves are annularly distributed in the cavity wall of the reaction cavity, fixing supports are arranged on the positioning grooves, two fixing plates which are mutually arranged at 60 degrees are arranged on the inner sides of the fixing supports, one electrode plate is arranged on each of two adjacent fixing plates of the two adjacent fixing supports, and a negative pressure hole communicated with the reaction cavity is. Due to the arrangement of the fixing support, the three electrode plates can be well fixed with each other, so that the mutual distance between the electrode plates is effectively ensured, and the fixing support is detachably connected with the induction shell, so that the electrodes can be conveniently replaced. The invention is used for electrochemical sensors.
Description
Technical Field
The present invention relates to a high-precision electrochemical sensor convenient for liquid extraction, which can be used for clinical diagnosis, material analysis, industrial control and environmental monitoring.
Background
The earliest electrochemical sensors dates back to the 50 s of the 20 th century, when used for oxygen monitoring. By the mid 80's of the 20 th century, small electrochemical sensors began to be used for the detection of a wide variety of toxic gases, solutions within the PEL range and showed good sensitivity and selectivity. In the chemical analysis of materials, different solutions and gases are often required to be detected, so that an electrochemical sensor is required.
Because the price of the material of the electrode is very high, the electrode is often thinned and thinned in order to save materials, but the strength of the electrode is low, so that the distance between adjacent electrodes is unstable when the adjacent electrodes work or are vibrated, and the measurement accuracy is influenced.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: provides a high-precision electrochemical sensor convenient for liquid extraction.
The solution of the invention for solving the technical problem is as follows:
a high-precision electrochemical sensor convenient for liquid extraction comprises a vertically arranged induction shell with a reaction cavity, wherein the upper end of the induction shell is provided with a cover plate, the lower end of the induction shell is provided with a suction hole, the cover plate is provided with three electrode plates with different materials, the three electrode plates are connected with the cover plate and extend into the reaction cavity, the cross section of the reaction cavity is circular, the cavity wall of the reaction cavity is annularly provided with three positioning grooves, the positioning grooves are provided with fixing supports, the inner sides of the fixing supports are provided with two fixing plates which are mutually arranged at 60 degrees, two adjacent fixing plates of two adjacent fixing supports are respectively provided with one electrode plate, the side surface of the induction shell is provided with a negative pressure hole communicated with the reaction cavity, the negative pressure hole is connected with a negative pressure cavity transversely arranged rightwards, a piston is arranged in the negative pressure cavity, the piston is provided with, a compressed return spring is arranged between the right side wall of the negative pressure cavity and the big head part.
As a further improvement of the scheme, the lower part of the reaction cavity is provided with a support bracket, the support bracket is provided with a plurality of vertically arranged diversion holes, the support bracket is arranged below the three electrode plates, and the lower ends of the electrode plates are abutted against the support bracket.
As a further improvement of the scheme, the side surfaces of the electrode plates are provided with grooves, and the fixing support is provided with protrusions which are used for being in concave-convex connection with the grooves.
The invention has the beneficial effects that: a high-precision electrochemical sensor convenient for liquid extraction comprises a vertically arranged induction shell with a reaction cavity, wherein the upper end of the induction shell is provided with a cover plate, the lower end of the induction shell is provided with a suction hole, the cover plate is provided with three electrode plates with different materials, the three electrode plates are connected with the cover plate and extend into the reaction cavity, the cross section of the reaction cavity is circular, the cavity wall of the reaction cavity is annularly provided with three positioning grooves, the positioning grooves are provided with fixing supports, the inner sides of the fixing supports are provided with two fixing plates which are mutually arranged at 60 degrees, two adjacent fixing plates of two adjacent fixing supports are respectively provided with one electrode plate, the side surface of the induction shell is provided with a negative pressure hole communicated with the reaction cavity, the negative pressure hole is connected with a negative pressure cavity transversely arranged rightwards, a piston is arranged in the negative pressure cavity, the piston is provided with, a return spring is arranged between the right side wall of the negative pressure cavity and the big head part. Due to the arrangement of the fixing support, the three electrode plates can be well fixed with each other, so that the mutual distance between the electrode plates is effectively ensured, and the fixing support is detachably connected with the induction shell, so that the electrodes can be conveniently replaced. And because of the arrangement of the negative pressure cavity, the liquid to be detected can be sucked by pulling the pull rod, and the compressed return spring always has the right thrust to the pull rod. The invention is used for electrochemical sensors.
Drawings
In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is clear that the described figures are only some embodiments of the invention, not all embodiments, and that a person skilled in the art can also derive other designs and figures from them without inventive effort.
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
fig. 2 is a schematic top view of a hidden cover plate according to an embodiment of the invention.
Detailed Description
The conception, the specific structure, and the technical effects produced by the present invention will be clearly and completely described below in conjunction with the embodiments and the accompanying drawings to fully understand the objects, the features, and the effects of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and those skilled in the art can obtain other embodiments without inventive effort based on the embodiments of the present invention, and all embodiments are within the protection scope of the present invention. In addition, all the coupling/connection relationships mentioned herein do not mean that the components are directly connected, but mean that a better coupling structure can be formed by adding or reducing coupling accessories according to specific implementation conditions. The technical characteristics of the invention can be combined interactively on the premise of not conflicting with each other.
Referring to fig. 1 and 2, this is an embodiment of the invention, specifically:
a high-precision electrochemical sensor convenient for liquid pumping comprises a vertically arranged sensing shell 1 with a reaction cavity 11, a cover plate 2 is arranged at the upper end of the sensing shell 1, a suction hole 111 is arranged at the lower end of the sensing shell 1, electrode plates 3 made of three materials different from each other are arranged on the cover plate 2, the three electrode plates 3 are connected with the cover plate 2 and extend into the reaction cavity 11, the cross section of the reaction cavity 11 is circular, three positioning grooves are annularly distributed on the cavity wall of the reaction cavity 11, a fixing support 112 is arranged on the positioning grooves, two fixing plates 113 which are mutually arranged at 60 degrees are arranged on the inner side of the fixing support 112, one electrode plate 3 is respectively arranged on two adjacent fixing plates 113 of two adjacent fixing supports 112, a negative pressure hole 21 communicated with the reaction cavity 11 is arranged on the side surface of the sensing shell 1, the negative pressure hole 21 is connected with a negative pressure cavity 5 which is, the piston 51 is provided with a pull rod 52 which can pull the piston 51 to move left and right, the right side of the pull rod 52 is provided with a big head 521, and a compressed return spring 53 is arranged between the right side wall of the negative pressure cavity 5 and the big head 521. Due to the arrangement of the fixing support, the three electrode plates can be well fixed with each other, so that the mutual distance between the electrode plates is effectively ensured, and the fixing support is detachably connected with the induction shell, so that the electrodes can be conveniently replaced. And because of the arrangement of the negative pressure cavity, the liquid to be detected can be sucked by pulling the pull rod, and the compressed return spring always has the right thrust to the pull rod.
The lower part of the reaction chamber 11 is provided with a support bracket 4, the support bracket 4 is provided with a plurality of vertically arranged diversion holes 41, the support bracket 4 is arranged below the three electrode plates 3, and the lower ends of the electrode plates 3 are abutted against the support bracket 4. Therefore, the electrode plate can be further prevented from vibrating, liquid to be measured can slowly enter the electrode plate, and high-precision measurement is realized.
The side of the electrode plate 3 is provided with a groove, and the fixing support 112 is provided with a protrusion for concave-convex connection with the groove.
The three electrodes of this embodiment are respectively called a working electrode, a counter electrode, and a reference electrode, the working electrode is made of an electron transport material, an enzyme material, or a mixture thereof, the counter electrode is made of platinum, and the reference electrode is made of silver or silver chloride.
While the preferred embodiments of the present invention have been illustrated and described, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (3)
1. A high accuracy electrochemical sensor for facilitating fluid extraction, comprising a vertically arranged sensing housing (1) with a reaction chamber (11), characterized in that: the upper end of the induction shell (1) is provided with a cover plate (2), the lower end of the induction shell (1) is provided with a suction hole (111), the cover plate (2) is provided with electrode plates (3) with different materials, the three electrode plates (3) are connected with the cover plate (2) and extend into the reaction chamber (11), the cross section of the reaction chamber (11) is circular, three positioning grooves are annularly distributed on the chamber wall of the reaction chamber (11), fixing supports (112) are arranged on the positioning grooves, the inner sides of the fixing supports (112) are provided with two fixing plates (113) which are arranged at 60 degrees, two adjacent fixing plates (113) of two adjacent fixing supports (112) are respectively provided with one electrode plate (3), the side surface of the induction shell (1) is provided with a negative pressure hole (21) communicated with the reaction chamber (11), the negative pressure hole (21) is connected with a chamber (5) which is transversely arranged right, a piston (51), a pull rod (52) capable of pulling the piston (51) to move left and right is arranged on the piston (51), a large head part (521) is arranged on the right side of the pull rod (52), and a compressed return spring (53) is arranged between the right side wall of the negative pressure cavity (5) and the large head part (521).
2. A high precision electrochemical sensor for facilitating fluid extraction as claimed in claim 1, wherein: the lower part of reaction chamber (11) is equipped with support bracket (4), is equipped with the vertical water conservancy diversion hole (41) that set up of a plurality of on support bracket (4), and support bracket (4) are established in the below of three plate electrode (3), the lower extreme and the support bracket (4) butt of plate electrode (3).
3. A high precision electrochemical sensor for facilitating fluid extraction as claimed in claim 1, wherein: the side of the electrode plate (3) is provided with a groove, and the fixing support (112) is provided with a protrusion which is used for being connected with the groove in a concave-convex mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810433858.5A CN108802128B (en) | 2018-05-08 | 2018-05-08 | High-precision electrochemical sensor convenient for liquid pumping |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810433858.5A CN108802128B (en) | 2018-05-08 | 2018-05-08 | High-precision electrochemical sensor convenient for liquid pumping |
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| CN108802128A CN108802128A (en) | 2018-11-13 |
| CN108802128B true CN108802128B (en) | 2020-07-07 |
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| CN201810433858.5A Active CN108802128B (en) | 2018-05-08 | 2018-05-08 | High-precision electrochemical sensor convenient for liquid pumping |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112834581B (en) * | 2020-12-31 | 2023-10-03 | 陕西师范大学 | Portable detection generator for dynamic detection, application and use method thereof |
| CN112946047B (en) * | 2021-01-28 | 2023-03-21 | 中国科学院烟台海岸带研究所 | Electrochemical method for rapidly detecting inorganic phosphorus in water body dissolved state |
| CN113686941A (en) * | 2021-08-10 | 2021-11-23 | 朱浩奇 | Chemical sensor |
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| CN2729718Y (en) * | 2004-09-03 | 2005-09-28 | 河北科技大学 | Combined ternary electrode |
| CN104677961A (en) * | 2015-03-09 | 2015-06-03 | 扬州工业职业技术学院 | Elastic clamping device with position of three-electrode system adjustable |
| KR20150133176A (en) * | 2012-12-28 | 2015-11-27 | 유니센스 인바이런먼트 에이에스 | An electrochemical sensor for sensing nitrous oxide |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2125826U (en) * | 1992-07-01 | 1992-12-23 | 机械电子工业部第十二研究所 | Improved strusture of conduction container |
| CN2496020Y (en) * | 2001-08-24 | 2002-06-19 | 李勤飞 | Pumpdown type temp. and humidity measuring sensor |
| JP4625946B2 (en) * | 2004-11-02 | 2011-02-02 | 国立大学法人 岡山大学 | pH measuring device and pH measuring method |
| JP4818715B2 (en) * | 2005-12-27 | 2011-11-16 | 東亜ディーケーケー株式会社 | Composite electrode and flow-type electrode device |
| CN200962138Y (en) * | 2006-09-01 | 2007-10-17 | 东莞市迈科科技有限公司 | Fully-closed three-pole system test device |
| CN204556563U (en) * | 2015-05-09 | 2015-08-12 | 山东建筑大学 | A kind of use for laboratory galvanochemistry three-electrode system Electrode stationary installation |
| CN205139078U (en) * | 2015-11-20 | 2016-04-06 | 山西大同大学 | Three electrode system fixing device with adjustable |
| CN206684099U (en) * | 2017-05-03 | 2017-11-28 | 南京科兴新材料科技有限公司 | A kind of new three-electrode system electrolytic cell |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2729718Y (en) * | 2004-09-03 | 2005-09-28 | 河北科技大学 | Combined ternary electrode |
| KR20150133176A (en) * | 2012-12-28 | 2015-11-27 | 유니센스 인바이런먼트 에이에스 | An electrochemical sensor for sensing nitrous oxide |
| CN104677961A (en) * | 2015-03-09 | 2015-06-03 | 扬州工业职业技术学院 | Elastic clamping device with position of three-electrode system adjustable |
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