Structure for protecting external reference of electrode

Abstract

The utility model discloses a structure for protecting an external reference of an electrode, which belongs to the technical field of electrochemistry and comprises an electrode wire, a connecting part and a glass tube, one end of the electrode wire penetrates through the connecting part and extends into the glass tube, the glass tube is hermetically connected with the connecting part, gel is contained in the glass tube, a liquid injection port is arranged on the side wall of the glass tube, and the liquid injection port is communicated with the connecting part. A threaded groove is formed in the end, away from the glass tube, of the liquid injection opening, a sealing cover is connected to the threaded groove in a threaded mode, a square block is fixedly arranged on the side wall of the connecting part, a triangular hole is formed in the side wall of the square block, and a fixing assembly used for fixing the position of the sealing cover is arranged on the side wall of the square block. According to the external reference electrode, the glass tube is arranged outside the electrode wire, so that the safety of the external reference electrode can be guaranteed, and meanwhile, the safety of refilled liquid medicine can also be guaranteed through the arrangement of the liquid injection port, the sealing cover and the fixing assembly.

Description

Technical Field

[0001] The utility model belongs to the technical field of electrochemistry, and in particular relates to a structure for protecting an external reference electrode. Background Art

[0002] The external reference is commonly mentioned, saturated calomel, silver / silver halide, standard hydrogen electrode, the external reference electrode is called the heart of the electrode, providing a constant signal for pH electrode measurement to ensure the accuracy of the measured value. Generally, the external reference is made of silver wire that is electroplated to form an Ag-AgCl coating, which is then solidified to make the external reference;

[0003] Generally, Ag-AgCI reference is applicable in common occasions, such as tap water. However, once the chemical substances contained in the water enter the electrode during the measurement of sewage or industrial wastewater, they will react with the Ag in Ag-AgCI. + A reaction occurs, causing external reference poisoning, which in turn causes the entire electrode to be scrapped, affecting the normal operation of the electrode.

[0004] To this end, we propose a structure to protect the external reference electrode to solve the above problems. Summary of the Invention

[0005] The purpose of the utility model is to solve the problems in the prior art and to propose a structure for protecting an external reference electrode.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A structure for protecting an external reference electrode includes an electrode wire, a connecting part, and a glass tube. One end of the electrode wire passes through the connecting part and extends into the glass tube. The glass tube is sealed with the connecting part. The glass tube contains gel. A liquid injection port is provided on the side wall of the glass tube. A threaded groove is provided on the end of the liquid injection port away from the glass tube. A sealing cover is threadedly connected to the threaded groove. A block is fixedly provided on the side wall of the connecting part. A triangular hole is provided on the side wall of the block. A fixing component for fixing the position of the sealing cover is provided on the side wall of the block.

[0008] Preferably, a ceramic core is sealed at the bottom of the glass tube, and the diameter of the glass tube is 2 mm.

[0009] Preferably, a cross bar is slidably connected in the triangular hole, and baffles are fixedly connected to the side walls at both ends of the cross bar, and the side walls of the baffles are against the side walls of the block.

[0010] Preferably, the triangular hole is in the shape of a right triangle, and placement grooves are provided at two acute angles of the triangular hole, and the shape of the placement grooves is a cross-section of the cross bar.

[0011] Preferably, the fixing assembly includes a slider, a lifting plate, an insertion rod and two telescopic rods. A vertical groove is provided on the side wall of the block away from the connecting part. The slider is slidably connected to the inner wall of the vertical groove. The lifting plate is fixedly connected to the side wall of the slider away from the vertical groove. The insertion rod is fixedly connected to the bottom wall of the lifting plate. The side wall of the sealing cover is fixedly connected to a block. The insertion rod is inserted into the block. The two telescopic rods are respectively fixedly connected to the two ends of the lifting plate. The ends of the two telescopic rods away from the lifting plate are respectively fixedly connected to the two ends of the cross bar.

[0012] Preferably, a chamfer is provided at the junction of the placement groove and the triangular hole, and the total length of the telescopic rod is consistent with the width of the block.

[0013] In summary, the technical effects and advantages of the utility model are:

[0014] Placing the Ag-AgCI external reference electrode wire in a glass tube effectively protects the wire. When toxic chemicals in industrial wastewater come into contact with the external reference, the slow penetration of the ceramic core effectively prevents corrosion of the Ag-AgCI coating, effectively avoiding external reference poisoning and extending the electrode's service life. The design of the fixed assembly and liquid injection port also facilitates refilling of the glass tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the bottom of the glass tube in the present invention;

[0017] Figure 3 This is a schematic diagram of the structure of the fixing assembly in the present utility model;

[0018] Figure 4 It is a schematic diagram of the structural connection between the sealing cover and the liquid injection port in the utility model.

[0019] In the figure: 1. Electrode wire; 2. Connecting part; 3. Glass tube; 4. Liquid filling port; 5. Threaded groove; 6. Sealing cover; 7. Block; 8. Triangular hole; 9. Ceramic core; 10. Crossbar; 11. Baffle; 12. Placement slot; 13. Slider; 14. Lifting plate; 15. Insertion rod; 16. Telescopic rod; 17. Vertical groove; 18. Slot. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0021] like Figures 1-4 As shown, a structure for protecting an external reference electrode includes an electrode wire 1, a connecting part 2 and a glass tube 3. One end of the electrode wire 1 passes through the connecting part 2 and extends into the glass tube 3. The glass tube 3 is sealed with the connecting part 2. A ceramic core 9 is sealed at the bottom of the glass tube 3. The diameter of the glass tube 3 is 2 mm. Since the ceramic core 9 has a slow penetration effect, it can effectively prevent toxic substances from corroding the Ag-AgCI coating, effectively avoiding external reference poisoning, thereby extending the service life of the electrode wire 1.

[0022] The glass tube 3 contains gel, and a liquid injection port 4 is provided on the side wall of the glass tube 3. A threaded groove 5 is provided at one end of the liquid injection port 4 away from the glass tube 3. A sealing cap 6 is threadedly connected to the threaded groove 5. When rehydration is not required, the sealing cap 6 can seal the liquid injection port 4. A block 7 is fixedly provided on the side wall of the connecting portion 2. A triangular hole 8 is provided on the side wall of the block 7. A crossbar 10 is slidably connected in the triangular hole 8. Baffles 11 are fixedly connected to the side walls of the crossbar 10 at both ends. The side walls of the baffle 11 are against the side walls of the block 7. The triangular hole 8 is in the shape of a right triangle. A placement groove 12 is provided at both acute angles of the triangular hole 8. The placement groove 12 is in the shape of a crossbar 10 cross section, so the crossbar 10 can be placed in the placement groove 12. Normally, the electrode wire 1 is in a vertical state when working, so the crossbar 10 is at the bottom corner position of the triangular hole 8 when working.

[0023] The side wall of the block 7 is provided with a fixing assembly for fixing the position of the sealing cover 6, the fixing assembly includes a slider 13, a lifting plate 14, an insertion rod 15 and two telescopic rods 16. A vertical groove 17 is provided on the side wall of the block 7 away from the connecting part 2, the slider 13 is slidably connected to the inner wall of the vertical groove 17, the lifting plate 14 is fixedly connected to the side wall of the slider 13 away from the vertical groove 17, the insertion rod 15 is fixedly connected to the bottom wall of the lifting plate 14, the side wall of the sealing cover 6 is fixedly connected to a block 18, the insertion rod 15 is inserted into the block 18, the two telescopic rods 16 are respectively fixedly connected to both ends of the lifting plate 14, and the two telescopic rods 16 are fixedly connected to both ends of the cross bar 10 at one end away from the lifting plate 14. The junction of the placement groove 12 and the triangular hole 8 is provided with a chamfer, and the total length of the telescopic rod 16 is consistent with the width of the block 7.

[0024] When the electrode wire 1 is working, the cross bar 10 is at the bottom corner of the triangular hole 8. When it is necessary to replenish the liquid inside the glass tube 3, the glass tube 3 is placed horizontally, and the cross bar 10 will slide to the other corner position of the triangular hole 8 under the action of gravity. At this time, the telescopic rod 16 will be stretched, and the slider 13 will move to the other end of the vertical groove 17. At this time, the insertion rod 15 at the bottom of the lifting plate 14 will leave the straight block 18, making it convenient for the staff to unscrew the sealing cover 6 and replenish the liquid from the liquid filling port 4.

[0025] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A structure for protecting an external reference electrode, comprising an electrode wire (1), a connecting portion (2) and a glass tube (3), characterized in that: One end of the electrode wire (1) passes through the connecting portion (2) and penetrates into the glass tube (3). The glass tube (3) is sealed and connected to the connecting portion (2). The glass tube (3) contains gel. A liquid injection port (4) is provided on the side wall of the glass tube (3). A threaded groove (5) is provided on the end of the liquid injection port (4) away from the glass tube (3). A sealing cover (6) is threadedly connected to the threaded groove (5). A block (7) is fixedly provided on the side wall of the connecting portion (2). A triangular hole (8) is provided on the side wall of the block (7). A fixing component for fixing the position of the sealing cover (6) is provided on the side wall of the block (7).

2. The structure for protecting an external reference electrode according to claim 1, characterized in that: A ceramic core (9) is sealed at the bottom of the glass tube (3), and the diameter of the glass tube (3) is 2 mm.

3. The structure for protecting an external reference electrode according to claim 1, characterized in that: A crossbar (10) is slidably connected in the triangular hole (8), and baffles (11) are fixedly connected to the side walls at both ends of the crossbar (10), and the side walls of the baffles (11) abut against the side walls of the block (7).

4. The structure for protecting an external reference electrode according to claim 3, characterized in that: The triangular hole (8) is in the shape of a right triangle, and placement grooves (12) are provided at two acute angles of the triangular hole (8). The placement grooves (12) are in the shape of a cross section of the cross bar (10).

5. The structure for protecting an external reference electrode according to claim 4, characterized in that: The fixing assembly includes a slider (13), a lifting plate (14), an insertion rod (15) and two telescopic rods (16); a vertical groove (17) is provided on the side wall of the block (7) away from the connecting portion (2); the slider (13) is slidably connected to the inner wall of the vertical groove (17); the lifting plate (14) is fixedly connected to the side wall of the slider (13) away from the vertical groove (17); the insertion rod (15) is fixedly connected to the bottom wall of the lifting plate (14); a block (18) is fixedly connected to the side wall of the sealing cover (6); the insertion rod (15) is inserted into the block (18); the two telescopic rods (16) are respectively fixedly connected to the two ends of the lifting plate (14); and the ends of the two telescopic rods (16) away from the lifting plate (14) are respectively fixedly connected to the two ends of the cross bar (10).

6. The structure for protecting an external reference electrode according to claim 5, characterized in that: The connecting position between the placement groove (12) and the triangular hole (8) is provided with a chamfer, and the total length of the telescopic rod (16) is consistent with the width of the block (7).

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