A silver-silver chloride reference electrode

Abstract

The utility model relates to the technical field of electrode, disclose a kind of silver silver chloride reference electrode, including fixed block, the inside fixed connection of one side of fixed block has wire, the inside of another side of fixed block is provided with transparent protective tube, the inside fixed connection of one side of transparent protective tube has electrode cap, the inside fixed connection of one side of electrode cap has silver wire, the outside fixed connection of one side of transparent protective tube has liquid supplementing pipe, the top fixed connection of transparent protective tube has L type rod, the inside of one side of L type rod is provided with sliding assembly, and the sliding assembly includes sliding column, and the outside sliding connection in the inside of one side of sliding column in L type rod. In the utility model, by pulling sliding rod and driving sliding column to slide, finally realize the purpose of replacing transparent protective tube, when protective tube appears crack, turbidity due to collision, corrosion or aging, protective tube can be replaced alone, without overall scrapping electrode, reduce use cost.

Description

Technical Field

[0001] This utility model relates to the field of electrode technology, and in particular to a silver chloride reference electrode. Background Technology

[0002] The silver chloride reference electrode is a commonly used electrochemical measurement reference electrode. It consists of a silver wire with silver chloride coating immersed in a solution containing a fixed concentration of chloride ions. Its electrode potential is determined by a reversible reaction and changes only with the internal chloride ion concentration and temperature. Therefore, it has the advantages of high stability, good reproducibility and fast response.

[0003] The existing silver chloride reference electrode is based on the reversible redox reaction between silver and silver chloride in an electrolyte solution containing chloride ions. However, due to the difficulty in replacing the transparent protective tube, the entire electrode often needs to be replaced after damage, rather than just the protective tube, which increases the cost of use. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a silver chloride reference electrode, which aims to improve the existing silver chloride reference electrode, which suffers from increased usage costs due to the difficulty in replacing the transparent protective tube.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A silver chloride reference electrode includes a fixing block, a wire fixedly connected to one side of the fixing block, a transparent protective tube disposed inside the other side of the fixing block, an electrode cap fixedly connected to one side of the transparent protective tube, a silver wire fixedly connected to one side of the electrode cap, a replenishment tube fixedly connected to one side of the transparent protective tube, an L-shaped rod fixedly connected to the top of the transparent protective tube, and a sliding component disposed inside one side of the L-shaped rod.

[0007] Preferably, the sliding assembly includes a sliding column, one side of which is slidably connected to the inside of one side of an L-shaped rod, and the other side of which is fixedly connected to a sliding rod. A support assembly is provided at the top of one side of the sliding column.

[0008] Preferably, one side of the silver wire is disposed on the outside of one side of the conductor, and the bottom end of the conductor is disposed on the top of the electrode cap.

[0009] Preferably, the side of the sliding column away from the L-shaped rod is slidably connected to the inside of the side of the fixing block away from the wire, and one side of the sliding rod is slidably connected to the inside of the side of the fixing block away from the transparent protective tube.

[0010] Preferably, the support assembly includes a spring, the bottom end of which is disposed at the top of one side of the sliding column, the top end of which is disposed inside the fixed block on the side away from the wire, a sleeve is fixedly connected inside the fixed block on the side away from the spring, and a connecting rod is slidably connected inside one side of the sleeve.

[0011] Preferably, one side of the spring is disposed inside the sleeve and the outside of one side of the connecting rod, and the bottom end of the connecting rod is fixedly connected to the top end of the other side of the sliding column.

[0012] Preferably, the other side of the silver wire is disposed on the outside of the other side of the transparent protective tube, and a sealing component is disposed on one side of the liquid replenishment tube.

[0013] Preferably, the sealing assembly includes a threaded post, one side of which is externally threaded to the inside of one side of the replenishment tube, one end of which is fixedly connected to a pulling block, and the other side of the replenishment tube is fixedly connected to a partition.

[0014] This utility model has the following beneficial effects:

[0015] 1. In this utility model, the sliding rod is pulled to drive the sliding column to slide. Then, the spring is compressed under the drive of the sliding column, which drives the connecting rod to slide. Then, the transparent protective tube is rotated to drive the L-shaped rod to rotate, and finally the purpose of replacing the transparent protective tube is achieved. When the protective tube cracks or becomes cloudy due to collision, corrosion or aging, the protective tube can be replaced separately without scrapping the entire electrode, thus reducing the cost of use.

[0016] 2. In this utility model, the threaded column is rotated by rotating the pull block, which removes the sealing structure of the replenishment tube. Then, liquid is poured in and flows through the replenishment tube and the partition to the inside of the transparent protective tube, thus achieving the purpose of replenishing liquid. Fresh electrolyte can be added directly to the replenishment tube to maintain a stable concentration, ensure the accuracy of the reference potential, and reduce potential drift. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural schematic diagram of a silver chloride reference electrode proposed in this utility model;

[0018] Figure 2 This is a partial structural diagram of the wire of a silver chloride reference electrode proposed in this utility model;

[0019] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0020] Figure 4 This is a partial structural diagram of the threaded column of a silver chloride reference electrode proposed in this utility model.

[0021] Legend:

[0022] 1. Fixing block; 2. Wire; 3. Transparent protective tube; 4. Electrode cap; 5. Silver wire; 6. Liquid replenishment tube; 7. L-shaped rod; 8. Sliding assembly; 801. Sliding column; 802. Sliding rod; 9. Support assembly; 901. Spring; 902. Sleeve; 903. Connecting rod; 10. Sealing assembly; 1001. Threaded column; 1002. Pulling block; 1003. Partition. Detailed Implementation

[0023] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] Reference Figures 1-3 An embodiment of this utility model provides a silver-silver chloride reference electrode, comprising a fixing block 1, a wire 2 fixedly connected inside one side of the fixing block 1, a transparent protective tube 3 disposed inside the other side of the fixing block 1, an electrode cap 4 fixedly connected inside one side of the transparent protective tube 3, a silver wire 5 fixedly connected inside one side of the electrode cap 4, a replenishment tube 6 fixedly connected outside one side of the transparent protective tube 3, an L-shaped rod 7 fixedly connected to the top of the transparent protective tube 3, and a sliding component 8 disposed inside one side of the L-shaped rod 7.

[0025] Specifically, the fixing block 1 is used to support and fix the wire 2. The wire 2 is a metal wire with good conductivity and corrosion resistance. It is used to connect the silver wire 5 inside the electrode to the external measurement circuit to realize the measurement and transmission of electrode potential. Then, the fixing block 1 is used to support and fix the sliding component 8 and the support component 9. The sliding component 8 and the support component 9 are used to lock the transparent protective tube 3. The transparent protective tube 3 is used to support and fix the electrode cap 4 and the liquid replenishment tube 6. The electrode cap 4 is used to seal the shell to prevent electrolyte solution leakage and ensure the stability of the internal environment of the electrode. The electrode cap 4 is also used to support and fix the silver wire 5. The liquid replenishment tube 6 is used to transport liquid into the transparent protective tube 3. The transparent protective tube 3 is made of transparent material.

[0026] Reference Figures 2-4The sliding assembly 8 includes a sliding post 801, one side of which is slidably connected to the inside of one side of the L-shaped rod 7, and the other side of which is fixedly connected to a sliding rod 802. A support assembly 9 is provided at the top of one side of the sliding post 801. One side of the silver wire 5 is disposed on the outside of one side of the wire 2, and the bottom end of the wire 2 is disposed at the top of the electrode cap 4. The side of the sliding post 801 away from the L-shaped rod 7 is slidably connected to the inside of the fixed block 1 away from the wire 2, and the side of the sliding rod 802 is slidably connected to the inside of the fixed block 1 away from the wire 2. Inside one side of the transparent protective tube 3; the support assembly 9 includes a spring 901, the bottom end of which is located at the top of one side of the sliding column 801, the top end of which is located inside the fixed block 1 on the side away from the wire 2, a sleeve 902 is fixedly connected inside the fixed block 1 on the side away from the spring 901, and a connecting rod 903 is slidably connected inside one side of the sleeve 902; the inside of one side of the spring 901 is located outside one side of the sleeve 902 and the connecting rod 903, and the bottom end of the connecting rod 903 is fixedly connected to the top of the other side of the sliding column 801;

[0027] Specifically, by pulling the sliding rod 802, the sliding column 801 is moved, loosening the connection between the L-shaped rod 7 and the fixed block 1. This, in turn, rotates the transparent protective tube 3, causing the L-shaped rod 7 to rotate and completely separating the fixed block 1 from the transparent protective tube 3. When the sliding column 801 slides, it compresses the spring 901, causing the connecting rod 903 to slide within the sleeve 902. The sleeve 902 and the connecting rod 903 then provide guidance for the spring 901. When the sliding rod 802 is not pulled, the spring 901 can prevent the sliding column 801 and the sliding rod 802 from sliding accidentally. When the pulling is complete, the spring 901, through its own characteristics, causes the sliding column 801 and the sliding rod 802 to slide back to their original positions, thus achieving the effect of replacing the transparent protective tube 3 without the need to scrap the entire electrode, reducing the cost of use.

[0028] Reference Figures 2-4 The other side of the silver wire 5 is set on the outside of the other side of the transparent protective tube 3, and a sealing component 10 is set inside one side of the liquid replenishment tube 6. The sealing component 10 includes a threaded post 1001, one side of the threaded post 1001 is threadedly connected to the inside of one side of the liquid replenishment tube 6, one end of the threaded post 1001 is fixedly connected to a pulling block 1002, and the other side of the liquid replenishment tube 6 is fixedly connected to a partition 1003.

[0029] Specifically, rotating the partition 1003 drives the threaded column 1001 to rotate, and the connection between the replenishment tube 6 and the threaded column 1001 is separated. When the threaded column 1001 is threadedly connected inside the replenishment tube 6, it has good sealing performance to prevent liquid leakage. Then, the replenishment tube 6 is used to support the partition 1003 for fixation, and the partition 1003 can prevent liquid backflow. Subsequently, the liquid flows into the interior of the transparent protective tube 3 through the replenishment tube 6 and the partition 1003, thereby achieving the effect of replenishing liquid, ensuring the accuracy of the reference potential, and reducing potential drift.

[0030] Working principle: When it is necessary to replace the transparent protective tube 3, first pull the sliding rod 802 to drive the sliding column 801 to slide, and at the same time drive the spring 901 to compress, so that the connecting rod 903 slides in the sleeve 902, thereby loosening the connection between the L-shaped rod 7 and the fixed block 1. Then rotate the transparent protective tube 3 to drive the L-shaped rod 7 to rotate, thereby achieving the effect of replacing the transparent protective tube 3. When the protective tube cracks or becomes cloudy due to collision, corrosion or aging, the protective tube can be replaced separately without scrapping the entire electrode, thus reducing the cost of use.

[0031] When liquid needs to be replenished, first rotate the pull block 1002 to drive the threaded column 1001 to rotate, thereby separating the threaded column 1001 from the replenishment tube 6. Then, the liquid is passed through the replenishment tube 6 and the partition 1003 into the transparent protective tube 3, thus achieving the effect of replenishing liquid. Fresh electrolyte can be directly added to the replenishment tube 6 to maintain a stable concentration, ensure the accuracy of the reference potential, and reduce potential drift.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A silver chloride reference electrode, comprising a fixed block (1), characterized in that: A wire (2) is fixedly connected inside one side of the fixing block (1), and a transparent protective tube (3) is provided inside the other side of the fixing block (1). An electrode cap (4) is fixedly connected inside one side of the transparent protective tube (3), and a silver wire (5) is fixedly connected inside one side of the electrode cap (4). A liquid replenishment tube (6) is fixedly connected outside one side of the transparent protective tube (3). An L-shaped rod (7) is fixedly connected to the top of the transparent protective tube (3), and a sliding component (8) is provided inside one side of the L-shaped rod (7).

2. The silver chloride reference electrode according to claim 1, characterized in that: The sliding assembly (8) includes a sliding column (801), one side of which is slidably connected to the inside of one side of an L-shaped rod (7), and the other side of which is fixedly connected to a sliding rod (802). A support assembly (9) is provided at the top of one side of the sliding column (801).

3. The silver chloride reference electrode according to claim 1, characterized in that: One side of the silver wire (5) is located outside the inside of one side of the wire (2), and the bottom end of the wire (2) is located at the top of the electrode cap (4).

4. The silver chloride reference electrode according to claim 2, characterized in that: The sliding column (801) is externally slidably connected to the side of the fixed block (1) away from the wire (2) on the side away from the L-shaped rod (7), and the sliding rod (802) is externally slidably connected to the side of the fixed block (1) away from the transparent protective tube (3) on the side away from the wire (2).

5. The silver chloride reference electrode according to claim 2, characterized in that: The support assembly (9) includes a spring (901), the bottom end of which is located at the top of one side of the sliding column (801), and the top end of which is located inside the fixed block (1) on the side away from the wire (2). A sleeve (902) is fixedly connected inside the fixed block (1) on the side away from the spring (901), and a connecting rod (903) is slidably connected inside the sleeve (902).

6. The silver chloride reference electrode according to claim 5, characterized in that: The spring (901) is located inside one side of the sleeve (902) and outside one side of the connecting rod (903), and the bottom end of the connecting rod (903) is fixedly connected to the top end of the sliding column (801) on the other side.

7. The silver chloride reference electrode according to claim 1, characterized in that: The silver wire (5) is disposed on the outside of the other side of the transparent protective tube (3) and a sealing assembly (10) is disposed on the inside of one side of the liquid replenishment tube (6).

8. The silver chloride reference electrode according to claim 7, characterized in that: The sealing assembly (10) includes a threaded post (1001), one side of which is externally threaded to the inside of the replenishment tube (6), one end of which is fixedly connected to a pull block (1002), and the other side of which is fixedly connected to a partition (1003).

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