CN210923560U - Novel dissolved oxygen sensor and dissolved oxygen detection device - Google Patents
Novel dissolved oxygen sensor and dissolved oxygen detection device Download PDFInfo
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- CN210923560U CN210923560U CN201921420536.3U CN201921420536U CN210923560U CN 210923560 U CN210923560 U CN 210923560U CN 201921420536 U CN201921420536 U CN 201921420536U CN 210923560 U CN210923560 U CN 210923560U
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Abstract
The utility model provides a novel dissolved oxygen sensor and a dissolved oxygen detection device, which comprises a working electrode, a counter electrode, a first assembly part and a second assembly part; the first assembly part comprises a first installation section and a second installation section which are connected into a whole, the counter electrode is fixedly arranged on the first installation section, and the working electrode is fixedly arranged on the second installation section; an electrolyte containing cavity is formed in the second assembly part, the second mounting section and the counter electrode are arranged in the electrolyte containing cavity, and one end of the second assembly part is connected with the first mounting section in a sealing mode; the other end of the second assembly part is further provided with an air inlet communicated with the electrolyte accommodating cavity, and a breathable film is arranged on the air inlet. The novel dissolved oxygen sensor simplifies the assembly process and improves the assembly qualification rate; the technical problem that the electrolyte of the sensor is easy to leak is effectively solved, the service life of the sensor is prolonged, and the accuracy of the measurement signal is improved.
Description
Technical Field
The utility model relates to a dissolved oxygen detects technical field, specific theory has related to a novel dissolved oxygen sensor and dissolved oxygen detection device.
Background
In recent years, with the rapid development of the internet of things technology, the concepts of the internet such as the internet of everything and cloud sharing are gradually and deeply enjoyed, and many industrial forms face to the reformation and the upgrade and need to be changed from the original traditional form to the form of the internet +. Various sensors including dissolved oxygen sensors have brought great convenience to people's life and production in many aspects as the most basic and important links in information transmission. The dissolved oxygen sensor is an important water quality detection sensor, is widely applied to water quality detection, and is mainly applied to industries such as aquaculture, sewage treatment, hydrological monitoring, monitoring of microbial fermentation process and the like.
Dissolved oxygen is an important index of water parameters, and has great guiding significance in aspects of indicating aquaculture, environmental management, hydrological monitoring, fermentation process monitoring and the like. Dissolved oxygen, as the name implies, refers to molecular oxygen dissolved in water or in the liquid phase, generally expressed as DO. The sources of dissolved oxygen are: firstly, when the water is not saturated, the water is dissolved in the water through the atmosphere; another source is the oxygen released by aquatic plants through photosynthesis; the dissolved oxygen content varies with temperature, pressure, salt content, and the like. The dissolved oxygen in natural water is usually consumed by reducing substances such as sulfide, sulfite and ferrous ions in water, and is also consumed by the respiration of microorganisms in water and the oxidation of organic matters in water by aerobic microorganisms. Dissolved oxygen in natural purified water is nearly saturated, when the concentration of the dissolved oxygen is less than 4-5 mg/L, the life of fishes is difficult, and the reduction of the dissolved oxygen in rivers and lakes is the main cause of water body odor. Therefore, the dissolved oxygen reflects the degree of water pollution, which is one of the important indicators of water quality pollution degree.
The existing method for measuring the content of dissolved oxygen in water mainly comprises the following steps: the iodine method, the current measuring method (Clark dissolved oxygen electrode), the conductance measuring method, the potential measuring method and the fluorescence quenching method have respective advantages, the current measuring method mainly comprises the current method, the potential method and the fluorescence quenching method, the current measuring method can be realized only by applying an external voltage due to the fact that the price of an optical instrument is generally high, and the primary cell type dissolved oxygen sensor has the advantages that the design of a subsequent circuit is simple, the reaction is fast, and the potential measurement is easy to realize.
However, the drawbacks of the galvanic cell type dissolved oxygen sensor are also obvious, such as short lifetime, easy leakage of electrolyte, and the like, which limits the popularization and use.
In order to solve the above problems, people are always seeking an ideal technical solution.
Disclosure of Invention
The utility model aims at the not enough of prior art to a novel dissolved oxygen sensor and dissolved oxygen detection device are provided.
In order to realize the purpose, the utility model discloses the technical scheme who adopts is:
the utility model provides a novel dissolved oxygen sensor in a first aspect, which comprises a working electrode, a counter electrode, a first assembly part and a second assembly part;
the first assembly part comprises a first installation section and a second installation section which are connected into a whole, the counter electrode is fixedly arranged on the first installation section, and the working electrode is fixedly arranged on the second installation section;
an electrolyte containing cavity is formed in the second assembly part, the second mounting section and the counter electrode are arranged in the electrolyte containing cavity, and one end of the second assembly part is connected with the first mounting section in a sealing mode;
the other end of the second assembly part is further provided with an air inlet communicated with the electrolyte accommodating cavity, and a breathable film is arranged on the air inlet.
The utility model discloses the second aspect provides a dissolved oxygen detection device, including above-mentioned novel dissolved oxygen sensor, still include the changer, the changer is connected respectively novel dissolved oxygen sensor's counter electrode and working electrode.
The utility model discloses relative prior art has substantive characteristics and progress, specific theory:
1) the utility model provides a novel dissolved oxygen sensor, which comprises a first assembly part and a second assembly part, wherein the first assembly part comprises a first installation section and a second installation section which are connected into a whole; when the second assembly part is assembled, one end of the second assembly part is connected with the first installation section in a sealing mode; the utility model simplifies the assembly process and improves the assembly qualification rate; meanwhile, the technical problem that the electrolyte of the sensor is easy to leak is effectively solved, the service life of the sensor is prolonged, and the accuracy of a measurement signal is improved;
2) the novel dissolved oxygen sensor also comprises a third assembly part used for fixing the sealing connection between the second assembly part and the first installation section, and the second assembly part is tightly fixed through the third assembly part after being in sealing fit with the first installation section, so that the sealing property between the first assembly part and the second assembly part is ensured;
3) the novel dissolved oxygen sensor also comprises an end cover for sealing the air inlet, and the end cover is screwed at the other end of the second assembly part; the end cover is provided with a through hole corresponding to the air inlet, and the air permeable membrane is arranged on the through hole of the end cover; because the assembly process of the breathable film is carried out independently, the assembly process is separated from other assembly processes, and the firmness and the sealing property of the film assembly are ensured.
Drawings
FIG. 1 is a cross-sectional view of a novel dissolved oxygen sensor.
Fig. 2 is an assembly view of the novel dissolved oxygen sensor.
Fig. 3 is an exploded view of the novel dissolved oxygen sensor.
Fig. 4 is a schematic view of a dissolved oxygen detecting apparatus.
In the figure: 1. a first fitting member; 2. a second fitting member; 3. a third fitting; 4. an end cap; 5. a first sealing gasket; 6. a second sealing gasket; 11. a first mounting section; 12. a second mounting section.
Detailed Description
The technical solution of the present invention will be described in further detail through the following embodiments.
Example 1
As shown in fig. 1 to 3, the novel dissolved oxygen sensor comprises a working electrode, a counter electrode, a first assembly part 1 and a second assembly part 2; the first assembly part 1 comprises a first installation section 11 and a second installation section 12 which are connected into a whole, the counter electrode is fixedly arranged on the first installation section 11, and the working electrode is fixedly arranged on the second installation section 12; an electrolyte containing cavity is formed in the second assembly part 2, the second mounting section 12 and the counter electrode are arranged in the electrolyte containing cavity, and one end of the second assembly part 2 is hermetically connected with the first mounting section 11; the other end of the second assembly part 2 is further provided with an air inlet communicated with the electrolyte accommodating cavity, and a breathable film is arranged on the air inlet.
In this embodiment, the first mounting section 11 and the second mounting section 12 are cylindrical bodies. The junction of the first installation section 11 and the second installation section 12 is provided with an annular groove for placing the counter electrode, and the counter electrode is an annular electrode matched with the annular groove. Communicated through grooves are formed in the first mounting section 11 and the second mounting section 12, and the working electrode is arranged in the through grooves; the through groove is an insulating cavity. The utility model discloses well working electrode and the independent assembly to the electrode for the form and the position of electrode have arrived better control, provide reliable assurance for the accuracy that later stage service signal acquireed.
Furthermore, the working electrode is located in the electrolyte containing cavity and partially protrudes out of the through groove, the protruding portion is of a conical structure, and the height of the conical structure is 0.2-2 mm.
In this embodiment, the working electrode is an inert electrode, which may be a gold electrode, a silver electrode, a platinum electrode, or an alloy electrode; the diameter of the working electrode is 0.8-3 mm. The counter electrode adopts an active electrode and consists of metal with active activity; the height of the counter electrode is 3-12 mm. The counter electrode is easy to lose electrons and be oxidized, and forms a current loop with the working electrode to complete the whole oxidation-reduction reaction; the active electrode may be comprised of metals such as iron, zinc, lead, copper, aluminum, and the like.
Therefore, this novel dissolved oxygen sensor structure improves the former battery type dissolved oxygen sensor structure of prior art according to the realization principle that former battery type dissolved oxygen sensor measures oxygen, has easy assembly, characteristics that the seal is good, has prolonged the life of sensor, has improved the accuracy of sensor measurement.
Example 2
The difference between the present embodiment and embodiment 1 is that the novel dissolved oxygen sensor further includes a third assembly member 3 for fixing the sealing connection between the second assembly member 2 and the first installation section 11, the first installation section 11 is screwed in the third assembly member 3, and a limiting boss for limiting the third assembly member 3 is provided on an outer circumferential surface of one end of the second assembly member 2. After the second assembly member 2 is in sealing fit with the first installation section 11, the third assembly member 3 is fastened, so that the sealing property between the first assembly member 1 and the second assembly member 2 is ensured.
Further, a first sealing gasket 5 is arranged at the joint of the second assembly part 2 and the first installation section 11. Further improved the utility model discloses a leakproofness prevents revealing of sensor electrolyte.
This novel dissolved oxygen sensor structure has used fastening screw's fixed principle, has realized the second assembly part with the fine closure of these two parts of first installation section, the leakproofness is good, has avoided the production of bubble in the assembling process simultaneously.
Example 3
This example differs from example 2 in that: the novel dissolved oxygen sensor further comprises an end cover 4 used for covering the air inlet, the end cover 4 is arranged at the other end of the second assembly part 2 in a threaded mode, and a second sealing gasket 6 is arranged at the joint of the second assembly part 2 and the end cover 4.
It should be noted that the end cover 4 is provided with a through hole corresponding to the air inlet, and the air permeable membrane is arranged on the through hole of the end cover 4 through a gasket. Because the assembly process of the breathable film is carried out independently, the assembly process is separated from other assembly processes, and the firmness and the sealing property of the film assembly are ensured.
Specifically, the breathable film is made of polytetrafluoroethylene or fluorinated ethylene propylene and is 0.01-0.04 mm thick.
Example 4
The present embodiment differs from the above embodiments in that: this embodiment has given a dissolved oxygen detection device's embodiment, and this dissolved oxygen detection device includes above-mentioned novel dissolved oxygen sensor, still includes the changer, the changer is connected respectively novel dissolved oxygen sensor's counter electrode and working electrode.
As shown in fig. 4, the transmitter includes a microcontroller, a display screen and a memory chip; the signal input end of the microcontroller is connected with the counter electrode and the working electrode of the novel dissolved oxygen sensor; and the signal output end of the microcontroller is respectively connected with the display and the storage chip.
In the embodiment, the output signal of the novel dissolved oxygen sensor is about 22 mV; the microcontroller adopts an 8051 singlechip or other processors capable of realizing the functions to process the output signal of the novel dissolved oxygen sensor; the display screen adopts an LCD display and is used for displaying the current dissolved oxygen content in a digital, Chinese character or English form; the memory chip is of the type AT24C32 or other, and is used for storing the dissolved oxygen content.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the same; although the present invention has been described in detail with reference to preferred embodiments, it should be understood by those skilled in the art that: the invention can be modified or equivalent substituted for some technical features; without departing from the spirit of the present invention, it should be understood that the scope of the claims is intended to cover all such modifications and variations.
Claims (10)
1. A novel dissolved oxygen sensor comprises a working electrode and a counter electrode, and is characterized in that: the device also comprises a first assembly part and a second assembly part;
the first assembly part comprises a first installation section and a second installation section which are connected into a whole, the counter electrode is fixedly arranged on the first installation section, and the working electrode is fixedly arranged on the second installation section;
an electrolyte containing cavity is formed in the second assembly part, the second mounting section and the counter electrode are arranged in the electrolyte containing cavity, and one end of the second assembly part is connected with the first mounting section in a sealing mode;
the other end of the second assembly part is further provided with an air inlet communicated with the electrolyte accommodating cavity, and a breathable film is arranged on the air inlet.
2. The novel dissolved oxygen sensor according to claim 1, characterized in that: the first mounting section and the second mounting section are cylindrical bodies.
3. The novel dissolved oxygen sensor according to claim 2, characterized in that: the junction of the first installation section and the second installation section is provided with an annular groove for placing the counter electrode, and the counter electrode is an annular electrode matched with the annular groove.
4. The novel dissolved oxygen sensor according to claim 3, characterized in that: the height of the counter electrode is 3-12 mm.
5. The novel dissolved oxygen sensor according to claim 2, characterized in that: the first mounting section is arranged in the third mounting section in a screwed mode through threads, and a limiting boss used for limiting the third mounting section is arranged on the outer peripheral surface of one end of the second mounting section.
6. The novel dissolved oxygen sensor according to claim 1, characterized in that: and communicated through grooves are formed in the first mounting section and the second mounting section, and the working electrode is arranged in the through grooves.
7. The novel dissolved oxygen sensor according to claim 6, characterized in that: the working electrode is located the electrolyte holding chamber part is outstanding through the groove setting, and the outstanding part is the toper structure, and the height of this toper structure is 0.2~2 mm.
8. The novel dissolved oxygen sensor according to claim 1, characterized in that: the air inlet is arranged at the bottom of the shell, the shell is provided with a first assembly part, the first assembly part is arranged at the bottom of the shell, the second assembly part is arranged at the bottom of the shell, the air inlet is arranged at the bottom of the shell, the shell is provided with a second assembly part, the first assembly part is.
9. The novel dissolved oxygen sensor according to claim 1, characterized in that: the breathable film is made of polytetrafluoroethylene or fluorinated ethylene propylene and is 0.01-0.04 mm thick.
10. A dissolved oxygen detection device, characterized in that: the novel dissolved oxygen sensor as claimed in any one of claims 1 to 9, further comprising a transducer, wherein the transducer is connected to the counter electrode and the working electrode of the novel dissolved oxygen sensor, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921420536.3U CN210923560U (en) | 2019-08-29 | 2019-08-29 | Novel dissolved oxygen sensor and dissolved oxygen detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921420536.3U CN210923560U (en) | 2019-08-29 | 2019-08-29 | Novel dissolved oxygen sensor and dissolved oxygen detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210923560U true CN210923560U (en) | 2020-07-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921420536.3U Active CN210923560U (en) | 2019-08-29 | 2019-08-29 | Novel dissolved oxygen sensor and dissolved oxygen detection device |
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| Country | Link |
|---|---|
| CN (1) | CN210923560U (en) |
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2019
- 2019-08-29 CN CN201921420536.3U patent/CN210923560U/en active Active
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