A screen-printed electrode with isolation structure

Abstract

The utility model relates to the technical field of silk screen printing electrode, concretely to a silk screen printing electrode with isolation structure, including base plate, the positive surface fixedly connected with working electrode of base plate, one side fixedly connected with the isolation board of working electrode, the positive surface of base plate is opened groove, the isolation board is fixedly connected through the groove in the positive surface of base plate, the top of isolation board is opened and is limited to groove, the inside swing joint of limit groove has expansion block, the outside of isolation board is provided with the protective layer, one side fixedly connected with reference electrode of working electrode. This silk screen printing electrode with isolation structure, through install the isolation board, can protect working electrode after solution drop coating in working electrode surface, avoid solution to scatter, cause short circuit to occur in three electrodes, simultaneously if the solution of drop is too much, can through limit groove, extract the expansion block in its inside, increase the area of isolation, and then improve the practicality of the device.

Description

Technical Field

[0001] This utility model relates to the field of screen printing electrode technology, specifically a screen printing electrode with an isolation structure. Background Technology

[0002] Currently, the most widely used electrochemical electrode is the screen-printed electrode. Through screen printing, the traditional electrochemical three-electrode system is printed onto the same plane, thereby preparing sensing electrodes of various shapes and styles. By modifying the surface of the screen-printed electrode with various functional compounds, the detection and analysis of different analytes can be achieved. In industrial production, the method of modifying existing screen-printed electrodes by drop coating is currently only applicable when the solvent of the electrode modification solution is water. Under the action of water surface tension, the trace amount (usually a few microliters) of modification solution after drop coating can remain stably on the surface of the working electrode without spreading.

[0003] When solution is applied to existing screen-printed electrodes, the solution tends to spread from the working electrode surface, causing the other two electrodes to also be covered with the finishing solution. Furthermore, the solution cannot be effectively isolated based on its quantity, and in severe cases, it may even cause a short circuit within the three electrodes, rendering the electrodes unusable. Utility Model Content

[0004] The purpose of this invention is to provide a screen-printed electrode with an isolation structure to solve the problem mentioned in the background art that existing screen-printed electrodes are prone to spreading from the surface of the working electrode during solution drop coating, resulting in the surface of the other two electrodes also being covered with the modification liquid. Furthermore, they cannot effectively isolate the electrodes according to the amount of solution, and in severe cases, they may even cause a short circuit within the three electrodes, rendering the electrodes unusable. To achieve the above objectives, this utility model provides the following technical solution: a screen-printed electrode with an isolation structure, comprising a substrate, a working electrode fixedly connected to the front side of the substrate, an isolation plate fixedly connected to one side of the working electrode, a groove formed on the front side of the substrate, the isolation plate fixedly connected to the front side of the substrate through the groove, a limiting groove formed on the top of the isolation plate, a telescopic block movably connected inside the limiting groove, and a protective layer provided on the outside of the isolation plate. By installing the isolation plate, the working electrode can be protected after the solution is dripped onto the surface of the working electrode, preventing the solution from spreading and causing a short circuit inside the three electrodes. At the same time, if too much solution is dripped in, the telescopic block inside can be pulled out through the limiting groove to increase the isolation area, thereby improving the practicality of the device.

[0005] More preferably, a reference electrode is fixedly connected to one side of the working electrode, and a counter electrode is fixedly connected to one side of the reference electrode. The isolation plate separates the reference electrode and the counter electrode, and an insulating ring is fitted around the outside of the isolation plate. By installing the insulating ring, the contact between the internal wires of the electrical equipment and the external environment can be prevented, thereby achieving the effect of electrical isolation and ensuring the safety of the user.

[0006] More preferably, the bottom of the working electrode is fixedly connected to a working electrode terminal, the bottom of the reference electrode is fixedly connected to a reference electrode terminal, the bottom of the counter electrode is fixedly connected to a counter electrode terminal, and the bottom of the substrate is fixedly connected to a mounting base. By installing terminals, a convenient connection method can be provided, enabling the device to be inserted and removed, achieving quick connection and disconnection, thereby improving the ease of operation of the device.

[0007] More preferably, the mounting base has an internally fixedly connected socket, and the socket has an internally fixedly connected limiting spring. A connection port is provided on one side of the mounting base, and a power cord is internally fixedly connected to the connection port. By installing the mounting base, the terminal can be inserted into the socket for use. At the same time, the limiting spring limits and fixes the terminal during insertion to ensure the normal use of the device, thereby improving the practicality of the device.

[0008] More preferably, the surface of the substrate is provided with an insulating layer, and the surface of the working electrode is provided with a sensitive film. By installing the sensitive film, not only can electron transfer and catalytic activity be further accelerated and the response sensitivity of the electrode to trace elements be improved, but it is also more conducive to the stable preservation of the sensor and reduces individual differences between sensors.

[0009] More preferably, a fixing block is fixedly connected to the upper surface of the mounting base, and an indicator is fixedly connected to the upper surface of the fixing block. By installing the indicator, the user can be given certain guidance during use, making the operation more convenient and reducing errors.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0011] In this invention, by installing an isolation plate, the working electrode can be protected after the solution is dripped onto the surface of the working electrode, preventing the solution from spreading and causing a short circuit inside the three electrodes. At the same time, if too much solution is dripped in, the internal telescopic block can be pulled out through the limiting groove to increase the isolation area, thereby improving the practicality of the device.

[0012] In this utility model, by installing an mounting base, the terminal can be inserted into the socket for use. At the same time, a limiting spring is used to limit and fix the terminal during insertion to ensure the normal use of the device, thereby improving the practicality of the device. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ;

[0014] Figure 2 This utility model Figure 1 Enlarged 3D structural diagram at point A;

[0015] Figure 3 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ;

[0016] Figure 4 This is a schematic cross-sectional view of the present invention.

[0017] Figure 5 This utility model Figure 4 Enlarged cross-sectional structural diagram at point B.

[0018] In the diagram: 1. Substrate; 2. Working electrode; 3. Isolation plate; 4. Groove; 5. Limiting groove; 6. Telescopic block; 7. Protective layer; 8. Reference electrode; 9. Counter electrode; 10. Insulating ring; 11. Working electrode terminal; 12. Reference electrode terminal; 13. Counter electrode terminal; 14. Mounting base; 15. Insulating layer; 16. Sensitive membrane; 17. Fixing block; 18. Marking; 1401. Socket; 1402. Limiting spring; 1403. Connection port; 1404. Power cord. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1 - Figure 5This utility model provides a technical solution: a screen-printed electrode with an isolation structure, including a substrate 1, a working electrode 2 fixedly connected to the front side of the substrate 1, an isolation plate 3 fixedly connected to one side of the working electrode 2, a groove 4 formed on the front side of the substrate 1, the isolation plate 3 fixedly connected to the front side of the substrate 1 through the groove 4, a limiting groove 5 formed on the top of the isolation plate 3, a telescopic block 6 movably connected inside the limiting groove 5, and a protective layer 7 provided on the outside of the isolation plate 3. By installing the isolation plate 3, during use, after the solution is dripped onto the surface of the working electrode 2, the working electrode 2 is protected to prevent the solution from spreading and causing a short circuit inside the three electrodes. At the same time, if too much solution is dripped in, the telescopic block 6 inside can be pulled out through the limiting groove 5 to increase the isolation area.

[0021] In this embodiment, as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a reference electrode 8 is fixedly connected to one side of the working electrode 2, and a counter electrode 9 is fixedly connected to one side of the reference electrode 8. The isolation plate 3 separates the reference electrode 8 and the counter electrode 9. An insulating ring 10 is sleeved on the outside of the isolation plate 3. In use, the insulating ring 10 can prevent the internal wires of the electrical equipment from coming into contact with the external environment, thereby achieving the effect of electrical isolation.

[0022] In this embodiment, as Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the bottom of the working electrode 2 is fixedly connected to the working electrode terminal 11, the bottom of the reference electrode 8 is fixedly connected to the reference electrode terminal 12, the bottom of the counter electrode 9 is fixedly connected to the counter electrode terminal 13, and the bottom of the substrate 1 is fixedly connected to the mounting base 14. In use, the terminals provide a convenient connection method, enabling the device to be inserted and removed, and achieving quick connection and disconnection.

[0023] In this embodiment, as Figure 1 , Figure 3 , Figure 4 and Figure 5 As shown, the mounting base 14 has a socket 1401 fixedly connected inside, and a limiting spring 1402 fixedly connected inside the socket 1401. A connection port 1403 is provided on one side of the mounting base 14, and a power cord 1404 is fixedly connected inside the connection port 1403. When using the device, the terminal is inserted into the socket 1401. At the same time, the limiting spring 1402 limits and fixes the terminal to ensure the normal use of the device.

[0024] In this embodiment, as Figure 1 , Figure 2 and Figure 3 As shown, an insulating layer 15 is provided on the surface of the substrate 1, and a sensitive film 16 is provided on the surface of the working electrode 2. When in use, the sensitive film 16 can not only further accelerate electron transfer and catalytic activity and improve the electrode's response sensitivity to trace elements, but also help to stabilize the sensor and reduce individual differences between sensors.

[0025] In this embodiment, as Figure 1 and Figure 3 As shown, a fixing block 17 is fixedly connected to the upper surface of the mounting base 14, and an indicator 18 is fixedly connected to the upper surface of the fixing block 17. When in use, the indicator 18 can provide certain guidance to the user.

[0026] The method of use and advantages of this utility model: The screen-printed electrode with an isolation structure operates as follows:

[0027] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, in use, the working electrode 2, reference electrode 8, and counter electrode 9 are first connected to the surface of the substrate 1 through the working electrode terminal 11, reference electrode terminal 12, and counter electrode terminal 13 to print the reference electrode 8. Then, the solution is drop-coated onto the surface of the working electrode 2 to protect the working electrode 2 and prevent the solution from spreading and causing a short circuit inside the three electrodes. At the same time, if too much solution is dropped, the internal telescopic block 6 can be pulled out through the limiting groove 5 to increase the isolation area. It is used through the terminal insertion socket 1401. At the same time, the inserted use limiting spring 1402 limits and fixes the terminal to ensure the normal use of the device. Finally, the device is printed and cured.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A screen-printed electrode with an isolation structure, comprising a substrate (1), characterized in that: A working electrode (2) is fixedly connected to the front side of the substrate (1), and an isolation plate (3) is fixedly connected to one side of the working electrode (2). A groove (4) is provided on the front side of the substrate (1), and the isolation plate (3) is fixedly connected to the front side of the substrate (1) through the groove (4). A limiting groove (5) is provided on the top of the isolation plate (3), and a telescopic block (6) is movably connected inside the limiting groove (5). A protective layer (7) is provided on the outside of the isolation plate (3).

2. The screen-printed electrode with an isolation structure according to claim 1, characterized in that: A reference electrode (8) is fixedly connected to one side of the working electrode (2), and a counter electrode (9) is fixedly connected to one side of the reference electrode (8). The isolation plate (3) separates the reference electrode (8) and the counter electrode (9), and an insulating ring (10) is sleeved on the outside of the isolation plate (3).

3. The screen-printed electrode with an isolation structure according to claim 2, characterized in that: The bottom of the working electrode (2) is fixedly connected to a working electrode terminal (11), the bottom of the reference electrode (8) is fixedly connected to a reference electrode terminal (12), the bottom of the counter electrode (9) is fixedly connected to a counter electrode terminal (13), and the bottom of the substrate (1) is fixedly connected to a mounting base (14).

4. A screen-printed electrode with an isolation structure according to claim 3, characterized in that: The mounting base (14) is fixedly connected to a socket (1401), and a limiting spring (1402) is fixedly connected inside the socket (1401). A connection port (1403) is opened on one side of the mounting base (14), and a power cord (1404) is fixedly connected inside the connection port (1403).

5. A screen-printed electrode with an isolation structure according to claim 1, characterized in that: An insulating layer (15) is provided on the surface of the substrate (1), and a sensitive film (16) is provided on the surface of the working electrode (2).

6. A screen-printed electrode with an isolation structure according to claim 4, characterized in that: A fixing block (17) is fixedly connected to the upper surface of the mounting base (14), and an identifier (18) is fixedly connected to the upper surface of the fixing block (17).

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