CN210347519U - Polarographic electrode and polarographic measurement analyzer - Google Patents
Polarographic electrode and polarographic measurement analyzer Download PDFInfo
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- CN210347519U CN210347519U CN201921155201.3U CN201921155201U CN210347519U CN 210347519 U CN210347519 U CN 210347519U CN 201921155201 U CN201921155201 U CN 201921155201U CN 210347519 U CN210347519 U CN 210347519U
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Abstract
The utility model discloses a polarographic electrode and polarographic measurement analyzer, polarographic electrode include negative plate, anode plate, diaphragm and the electrolyte that sets up in a detection storehouse, and the negative plate of this polarographic electrode constitutes a sphere with the terminal surface of negative pole fixed column, and its edge extends backward behind the diaphragm cladding sphere, expands after the wedge pressure face, avoids the diaphragm fold to appear in sphere department, makes the better laminating of diaphragm and negative plate. And the outer fringe of diaphragm is along with the outer wall of diaphragm clamping ring to turning up for the diaphragm is one "omega" pattern, and through the cooperation of diaphragm clamping ring and detection storehouse main part, extrudees along with the diaphragm, makes the diaphragm fixed firm, can not drop. In addition, the negative plate is arc-shaped, so that the area of the negative plate is increased, and the electron adsorption capacity of the negative plate is improved. The polarographic measurement analyzer using the polarographic electrode can improve the accuracy of detection data through the optimization of the diaphragm mounting structure so as to make correct judgment on water quality.
Description
Technical Field
The utility model relates to a water quality testing technical field especially relates to a polarographic electrode and polarographic measurement analysis appearance.
Background
The polarographic electrode is an important component of a polarographic measurement analyzer, the platinum cathode, the silver anode and the electrolyte are separated from the outside by a thin film, and the cathode is almost in direct contact with the film in general. Through the difference of electrolyte and film, can be applied to the detection of multiple parameters such as aquatic dissolved oxygen, chlorine residue to satisfy the detection demand to the different compositions of liquid.
For example, because the polarographic dissolved oxygen electrode is one of the main indicators of water quality parameters, the polarographic dissolved oxygen electrode can be widely used for measuring the dissolved oxygen content in various occasions, such as aquaculture water, water source ecological monitoring and environmental monitoring field measurement, and evaluating the water quality. For a polarographic dissolved oxygen sensor, when a water sample flows through the dissolved oxygen sensor, oxygen in the water sample diffuses into a membrane through a selective oxygen permeable membrane, and dissolved oxygen molecules in the water undergo oxidation and reduction reactions on a polarographic electrode under polarization voltage to generate current. At a certain temperature, the magnitude of the reaction current is in direct proportion to the concentration of dissolved oxygen. When the film is installed, the plane can guarantee directly pressing close to the plane completely, but the current negative plate of reality is the sphere, in order to guarantee the timely renewal of surperficial liquid, so need regard as the contact surface with bellied sphere, this film that will cause current polarographic electrode appears fold damage phenomenon such as easily after the equipment, when using, there is the negative pole in the fold and intervenes the service defect that measured value was influenced in the area change of measurement, and poor to the protective effect of film, the easy damaged service defect that leads to the selective permeation membrane to lose the effect that appears.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a laminating is inseparable between diaphragm and the negative pole, the polarographic formula electrode of no fold to and the polarographic measurement analysis appearance of using this polarographic formula electrode, make data detection more accurate.
In order to solve the technical problem, the utility model discloses the technical scheme who takes is:
the utility model provides a polarographic electrode, includes negative plate, anode plate, diaphragm and the electrolyte that sets up in a detection storehouse, its characterized in that: a cathode fixing column coaxial with the detection bin is fixed in the detection bin, the cathode plate is embedded into the end face of the outer side of the cathode fixing column and forms a spherical structure with the cathode plate, the spherical surface is positioned outside the detection bin, and a wedge-shaped pressing surface connected with the spherical surface is arranged on the side wall of the cathode fixing column; the detection end of the detection bin is of a split structure and comprises a diaphragm pressing ring and a protective cap, the inner wall of the diaphragm pressing ring is matched with a wedge-shaped pressing surface, the outer wall of the diaphragm pressing ring is matched with an inner hole of a detection bin main body, a circle of pressing groove is formed in the outer end of the diaphragm pressing ring, the protective cap is sleeved on the pressing groove, and the protective cap is fixed with the detection bin main body; the middle part of the diaphragm is coated on the spherical surface, the edge of the diaphragm extends inwards and is folded along the outer wall of the diaphragm pressing ring, and the diaphragm pressing ring is pressed and fixed to form an omega-shaped structure.
The further technical scheme is as follows: the outer end of the protective cap is provided with a wedge-shaped water guide surface.
The further technical scheme is as follows: the outer wall of the diaphragm pressing ring is a conical surface which expands outwards.
A polarographic measurement analyzer is characterized in that: the polarographic electrode comprises a polarographic electrode according to any one of the technical schemes, and further comprises an electric control bin fixed with the detection bin, wherein a circuit board connected with a cathode plate and an anode plate through leads is fixed in the electric control bin, and the circuit board is used for receiving signals fed back by the polarographic electrode, converting the signals and transmitting the converted signals to a display instrument.
The further technical scheme is as follows: an air pipe communicated with the outside is arranged in the electric control bin.
The further technical scheme is as follows: the lead wire that display instrument and circuit board are connected wraps up in a waterproof cover with the air hose, waterproof cover is worn out the outer end in electroplax storehouse and is equipped with flexible anti-folding portion.
Adopt the produced beneficial effect of above-mentioned technical scheme to lie in:
the negative plate of the polarographic electrode and the end face of the cathode fixing column form a spherical surface, the edge of the diaphragm is extended backwards after the diaphragm is coated on the spherical surface, and the diaphragm is prevented from being folded at the spherical surface by expanding backwards through the wedge-shaped pressing surface, so that the diaphragm is better attached to the negative plate.
And the outer fringe of diaphragm is along with the outer wall of diaphragm clamping ring to turning up for the diaphragm is one "omega" pattern, and through the cooperation of diaphragm clamping ring and detection storehouse main part, extrudees along with the diaphragm, makes the diaphragm fixed firm, can not drop.
In addition, the negative plate is arc-shaped, so that surface liquid can be updated in time, the area of the negative plate is increased, the electron adsorption capacity of the negative plate is improved, the limit diffusion current is improved, interference caused by other substances is weakened, and the anti-interference capacity is improved.
The polarographic measurement analyzer using the polarographic electrode can improve the accuracy of detection data through the optimization of the diaphragm mounting structure so as to make correct judgment on water quality.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic structural diagram of a middle polarographic electrode of the present invention;
fig. 2 is a schematic structural diagram of the middle polarographic measurement analyzer of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by the skilled in the art without creative work belong to the protection scope of the present invention.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be implemented in other ways different from the specific details set forth herein, and one skilled in the art may similarly generalize the present invention without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
As shown in fig. 1, a polarographic electrode includes a cathode plate 11, an anode plate 12, a membrane 13 and an electrolyte, which are arranged in a detection chamber 10, a cathode fixing column 14 coaxial with the detection chamber 10 is fixed in the detection chamber 10, the cathode plate 11 is embedded in the outer end face of the cathode fixing column 14 and forms a spherical structure with the cathode fixing column, the spherical surface is located outside the detection chamber 10, and the side wall of the cathode fixing column 14 is provided with a wedge-shaped pressing surface 15 engaged with the spherical surface; the detection end of the detection bin 10 is of a split structure and comprises a diaphragm pressing ring 16 and a protective cap 17, the inner wall of the diaphragm pressing ring 16 is matched with the wedge-shaped pressing surface 15, the outer wall of the diaphragm pressing ring is matched with an inner hole of a main body of the detection bin 10, a circle of pressing groove is formed in the outer end of the diaphragm pressing ring 16, the protective cap 17 is sleeved on the pressing groove, and the protective cap 17 is fixed with the main body of the detection bin 10; the middle part of the diaphragm 13 is coated on the spherical surface, the edge of the diaphragm extends inwards and is folded along the outer wall of the diaphragm pressing ring 16, and the diaphragm pressing ring 16 is used for pressing and fixing the diaphragm to form an omega-shaped structure.
The end faces of the cathode plate 11 and the cathode fixing column 14 of the polarographic electrode form a spherical surface, the edge of the diaphragm 13 extends backwards after the spherical surface is coated, and the diaphragm 13 expands backwards through the wedge-shaped pressing surface 15, so that the diaphragm 13 is prevented from being folded at the spherical surface, and the diaphragm 13 and the cathode plate 11 are better attached.
And the outer fringe of diaphragm 13 is along with the outer wall of diaphragm clamping ring 16 outwards turns up for diaphragm 13 is an "omega" style, and through the cooperation of diaphragm clamping ring 16 with detect storehouse 10 main part, extrudees along with diaphragm 13, makes diaphragm 13 fixed firm, can not drop.
In addition, the cathode plate 11 is arc-shaped, so that surface liquid can be updated in time, the area of the cathode plate 11 is increased, the capability of the cathode plate 11 for adsorbing electrons is improved, the limit diffusion current is improved, interference caused by other substances is weakened, and the anti-interference capability is improved.
The outer end of the protective cap 17 is provided with a wedge-shaped water guide surface 18, so that the measured liquid can be ensured to be updated in time, and the detection accuracy is improved.
The outer wall of diaphragm clamping ring 16 is the conical surface that expands outward, can further make diaphragm 13 expand, avoids appearing too much fold on the diaphragm 13, moves the fold of diaphragm and the fixed position that compresses tightly to the combination department of clamping ring 16, guarantees diaphragm 13 at the inseparable laminating and the integrality of diaphragm negative plate 11.
As shown in fig. 2, a polarographic measurement analyzer includes the polarographic electrode, and further includes an electronic control bin 20 fixed with the detection bin 10, a circuit board 21 connected with the cathode plate 11 and the anode plate 12 through leads is fixed in the electronic control bin 20, and the circuit board 21 is used for receiving signals fed back by the polarographic electrode, converting the signals and transmitting the converted signals to a display. The working principle of the polarographic measurement analyzer is conventional technology, and the polarographic measurement analyzer is mainly used for improving the accuracy of detection data by optimizing the installation structure of the diaphragm 13 after the polarographic electrode is applied so as to accurately measure water quality.
The content of dissolved oxygen in water is related to the atmospheric pressure on the water surface along with the magnitude of the oxygen partial pressure on the water surface. As the altitude increases, the atmospheric pressure gradually decreases, so that the saturated oxygen content of dissolved oxygen is lower for natural water in the plateau region.
Atmospheric pressure compensation values of other conventional polarographic measurement analyzers are mostly manually or manually input during underwater measurement, and atmospheric pressure changes cannot be measured at all in real time, so that measurement data are inconsistent with actual data, and therefore an air pipe 22 communicated with the outside is arranged in the electronic control bin 20. When the instrument is measured under water, guarantee the circuit storehouse body through the air duct and be the same with external atmospheric pressure, consider that in overcast and rainy day, pressure can be along with weather variation, have the air duct to guarantee the real-time supervision atmospheric pressure change with its UNICOM and can monitor the pressure of measuring water level height above sea level department simultaneously again, measure that equally can be accurate.
In addition, lead wire 23 that display instrument and circuit board 21 are connected wraps up in a waterproof cover 24 with air hose 22, waterproof cover 24 wears out the outer end in electroplax storehouse and is equipped with flexible anti-folding portion 25, can avoid air hose 22 to buckle, guarantees that air hose 22 admits air unobstructed.
The above is only the preferred embodiment of the present invention, and any person can make some simple modifications, deformations and equivalent replacements according to the present invention, all fall into the protection scope of the present invention.
Claims (6)
1. The utility model provides a polarographic electrode, includes negative plate (11), anode plate (12), diaphragm (13) and electrolyte that set up in detecting storehouse (10), its characterized in that: a cathode fixing column (14) coaxial with the detection bin (10) is fixed in the detection bin (10), the cathode plate (11) is embedded into the end face of the outer side of the cathode fixing column (14) and forms a spherical structure with the cathode plate, the spherical surface is positioned outside the detection bin (10), and a wedge-shaped pressing surface (15) connected with the spherical surface is arranged on the side wall of the cathode fixing column (14); the detection end of the detection bin (10) is of a split structure and comprises a diaphragm pressing ring (16) and a protective cap (17), the inner wall of the diaphragm pressing ring (16) is matched with a wedge-shaped pressing surface (15), the outer wall of the diaphragm pressing ring is matched with an inner hole of a main body of the detection bin (10), a circle of pressing groove is formed in the outer end of the diaphragm pressing ring (16), the protective cap (17) is sleeved on the pressing groove, and the protective cap (17) is fixed with the main body of the detection bin (10); the middle part of the diaphragm (13) is coated on the spherical surface, the edge of the diaphragm extends inwards and is folded along the outer wall of the diaphragm pressing ring (16), and the diaphragm pressing ring (16) is pressed and fixed to form an omega-shaped structure.
2. The polarographic electrode of claim 1, wherein: the outer end of the protective cap (17) is provided with a wedge-shaped water guide surface (18).
3. The polarographic electrode of claim 1, wherein: the outer wall of the diaphragm pressing ring (16) is a conical surface which expands outwards.
4. A polarographic measurement analyzer is characterized in that: the polarographic electrode comprises the polarographic electrode according to any one of claims 1 to 3, and further comprises an electric control bin (20) fixed with the detection bin (10), a circuit board (21) connected with the cathode plate (11) and the anode plate (12) through conducting wires is fixed in the electric control bin (20), and the circuit board (21) is used for receiving signals fed back by the polarographic electrode, converting the signals and transmitting the signals to a display instrument.
5. The polarographic measurement analyzer of claim 4, wherein: an air pipe (22) communicated with the outside is arranged in the electric control bin (20).
6. The polarographic measurement analyzer of claim 4, wherein: lead wire (23) and air pipe (22) that display instrument and circuit board (21) are connected wrap up in waterproof cover (24), waterproof cover (24) are worn out the outer end in electroplax storehouse and are equipped with flexible anti-folding portion (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921155201.3U CN210347519U (en) | 2019-07-22 | 2019-07-22 | Polarographic electrode and polarographic measurement analyzer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921155201.3U CN210347519U (en) | 2019-07-22 | 2019-07-22 | Polarographic electrode and polarographic measurement analyzer |
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| CN210347519U true CN210347519U (en) | 2020-04-17 |
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| CN201921155201.3U Active CN210347519U (en) | 2019-07-22 | 2019-07-22 | Polarographic electrode and polarographic measurement analyzer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114544740A (en) * | 2022-02-18 | 2022-05-27 | 陕西地矿第一地质队有限公司 | Polar spectrum analyzer for exploration |
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2019
- 2019-07-22 CN CN201921155201.3U patent/CN210347519U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114544740A (en) * | 2022-02-18 | 2022-05-27 | 陕西地矿第一地质队有限公司 | Polar spectrum analyzer for exploration |
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