A small pump jet defoaming electrochemical detection cell

Abstract

The application belongs to the technical field of electrochemical detection cell, and particularly relates to a small pump jet defoaming electrochemical detection cell. The pump jet defoaming electrochemical detection cell comprises a detection cell body, a detection cell cover installed at the top end of the detection cell body, an electrolyte contained in the detection cell body, an anode plate, a cathode plate and a reference electrode plate arranged in the electrolyte, a jet defoaming mechanism arranged at the periphery of the anode plate and the cathode plate respectively, each jet defoaming mechanism communicated with a submersible pump installed at the bottom of the detection cell body through a water delivery hose, and the jet defoaming mechanism connected with the detection cell cover through a lifting mechanism. By arranging independent jet defoaming mechanisms at the periphery of the anode plate and the cathode plate respectively, water flow can be directly sprayed to the working surface of the electrode plate, so that the bubbles adhered to the surface of the electrode plate can be efficiently flushed and removed, and the problem of slow flow rate and insufficient flushing force of water flow reaching the surface of the electrode plate in the traditional overall stirring mode is avoided.

Description

Technical Field

[0001] This invention belongs to the field of electrochemical detection cell technology, specifically relating to a small pump-jet defoaming electrochemical detection cell. Background Technology

[0002] During electrochemical detection, when the potential of the working electrode (anode or cathode) reaches or exceeds the evolution potential of gaseous products (such as oxygen, hydrogen, chlorine, etc.), bubbles will continuously form on the electrode surface. If these bubbles adhere to the electrode surface, they will hinder effective contact and electron exchange between the electrode and the electrolyte, leading to instability in the actual working area of ​​the electrode and uneven current distribution, resulting in large fluctuations and poor reproducibility in the detection results. This problem is particularly prominent in fields such as water electrolysis, electrochemical corrosion, and electrosynthesis.

[0003] To eliminate the interference of air bubbles on electrochemical detection, several solutions have been proposed in existing technologies. For example, the electrolyte is stirred as a whole, and a magnetic stir bar or mechanical stirrer is used to create macroscopic flow in the solution to remove air bubbles from the electrode surface. However, this method requires stirring the solution throughout the entire detection cell, the flow rate reaching the electrode surface is relatively slow, it is not very targeted at air bubbles, and the defoaming effect is not ideal.

[0004] Therefore, there is an urgent need to design an electrochemical detection cell that is highly targeted at bubbles and has a good defoaming effect. Summary of the Invention

[0005] To address the problems existing in the prior art, this invention provides a small-scale pump-jet defoaming electrochemical detection cell, and specifically discloses the following technical solutions: A small-scale pump-jet defoaming electrochemical detection cell includes a detection cell body with a detection cell cover installed at the top. The detection cell body contains an electrolyte, and an anode plate, a cathode plate, and a reference electrode plate are disposed within the electrolyte. The anode plate, cathode plate, and reference electrode plate are respectively fixedly connected to the detection cell cover via corresponding support tubes. A jet defoaming mechanism is disposed around the anode plate and cathode plate to eliminate bubbles adhering to the electrode plate surface. Each jet defoaming mechanism is connected to a submersible pump installed at the bottom of the detection cell body via a water delivery hose. The jet defoaming mechanism is connected to the detection cell cover via a lifting mechanism.

[0006] Furthermore, the jet defoaming mechanism includes a rectangular tube assembly formed by connecting two long jet water pipes and two short jet water pipes. The two rectangular tube assemblies respectively surround the periphery of the anode plate and the cathode plate, and the two long jet water pipes are parallel to the working surface of the corresponding electrode plate. Several nozzles are evenly arranged along the length of the long jet water pipes for spraying water onto the working surface of the electrode plate. The rectangular tube assembly is connected to the outlet of the corresponding submersible pump through the water delivery hose, and the rectangular tube assembly is connected to the detection pool cover through the lifting mechanism.

[0007] Furthermore, all the nozzles are tilted upwards and positioned towards the corresponding electrode plates.

[0008] Furthermore, the lifting mechanism is a hydraulic telescopic rod, the bottom end of which is fixedly connected to the rectangular tube assembly, and the top end of which is fixedly connected to the bottom surface of the testing pool cover.

[0009] Furthermore, the submersible pump is electrically connected in sequence to the frequency converter and power supply outside the detection pool body via wires.

[0010] Furthermore, a horizontal filter screen is provided inside the detection pool body. The outer periphery of the filter screen is fixedly connected to the inner wall of the detection pool body. The filter screen is located above the submersible pump and below the three electrode plates. The filter screen has through holes for the water delivery hose and the wire to pass through.

[0011] Furthermore, an ultrasonic generator is fixedly installed on the upper surface of the filter screen.

[0012] Furthermore, the support tubes all penetrate the detection pool cover and are fixedly connected to the detection pool cover, and the power supply lines connected to the corresponding electrode plates are led out to the outside of the detection pool body through the support tubes.

[0013] Furthermore, the submersible pump is attached to the bottom wall of the detection pool body via a suction cup.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: By installing independent jet defoaming mechanisms around the anode and cathode plates, and uniformly arranging multiple nozzles on a long jet water pipe parallel to the working surface of the electrode plates, water can be sprayed directly onto the working surface of the electrode plates from multiple points. This efficiently flushes away and removes air bubbles adhering to the electrode plate surface, avoiding the problems of slow flow rate and insufficient flushing force when the water reaches the electrode plate surface in traditional integral stirring methods. Simultaneously, the nozzles are all tilted upwards towards the electrode plates, creating an upward impact force that helps guide air bubbles away from the electrode plate surface and escape upwards into the electrolyte. This ensures a stable effective contact area between the electrode plates and the electrolyte, uniform current distribution, and significantly improves the reproducibility and reliability of electrochemical detection results.

[0015] The jet defoaming mechanism is connected to the test tank cover through a lifting mechanism. The lifting mechanism can drive the jet defoaming mechanism to move up and down back and forth, thereby achieving back and forth scanning of the working surface of the electrode plate to avoid defoaming dead corners.

[0016] Inside the detection tank, above the submersible pump and below the three electrode plates, there is a horizontal filter screen. This filter screen can intercept suspended air bubbles in the electrolyte, preventing these air bubbles from being sucked into the submersible pump and ultimately jetted onto the electrode plates, thus affecting the defoaming effect.

[0017] An ultrasonic generator, fixedly mounted on the surface of the filter screen, emits ultrasonic waves into the electrolyte. The cavitation effect generated by the ultrasound effectively breaks down and removes tiny, stubborn bubble nuclei from the electrode plate surface, especially for bubbles in the micropores or edge areas of the electrode that are difficult for the jet to directly reach, thus playing an auxiliary role in removal. The combination of ultrasonic defoaming and jet defoaming creates a synergistic effect, further improving the thoroughness and efficiency of defoaming. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 for Figure 1 A magnified view of a portion of point A in the middle.

[0020] Figure 3 This is a top view of the rectangular tube assembly in this invention.

[0021] 1-Detection pool body, 2-Detection pool cover, 3-Anode plate, 4-Cathode plate, 5-Reference electrode plate, 6-Support pipe, 7-Water supply hose, 8-Submersible pump, 9-Hydraulic telescopic rod, 10-Rectangular tube assembly, 11-Sprayer, 12-Variable frequency controller, 13-Filter screen, 14-Ultrasonic generator. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Reference Figure 1-3 A small-scale pump-jet defoaming electrochemical detection cell includes a detection cell body 1, a detection cell cover 2 installed at the top of the detection cell body 1, an electrolyte contained in the detection cell body 1, an anode plate 3, a cathode plate 4, and a reference electrode plate 5 disposed in the electrolyte, the anode plate 3, cathode plate 4, and reference electrode plate 5 respectively fixedly connected to the detection cell cover 2 by corresponding support pipes 6, a jet defoaming mechanism is respectively disposed around the anode plate 3 and cathode plate 4 to eliminate bubbles attached to the surface of the electrode plate, each jet defoaming mechanism is connected to a submersible pump 8 installed at the bottom of the detection cell body 1 through a water supply hose 7, the submersible pump 8 is used to provide power for the jet water flow, the jet defoaming mechanism is connected to the detection cell cover 2 through a lifting mechanism, the lifting mechanism is used to drive the jet defoaming mechanism to move up and down to achieve scanning of the working surface of the electrode plate, thereby ensuring the defoaming effect.

[0024] In this embodiment, the jet defoaming mechanism includes a rectangular tube group 10 formed by connecting two long jet water pipes and two short jet water pipes. The two rectangular tube groups 10 respectively surround the periphery of the anode plate 3 and the cathode plate 4. The two long jet water pipes located in the same rectangular tube group are parallel to the working surface of the corresponding electrode plate. A number of nozzles 11 are evenly arranged along the length of the long jet water pipes for spraying water onto the working surface of the electrode plate, thereby efficiently flushing and removing the air bubbles attached to the surface of the electrode plate. The rectangular tube group 10 is connected to the outlet of the corresponding submersible pump 8 through a water supply hose 7. The rectangular tube group 10 is connected to the detection pool cover 2 through a lifting mechanism.

[0025] In this embodiment, the nozzles 11 are all tilted upward toward the corresponding electrode plates so that the jet water flow forms an upward impact force, which helps the bubbles to detach from the surface of the electrode plates and escape upward from the electrolyte.

[0026] In this embodiment, the lifting mechanism is a hydraulic telescopic rod 9. The bottom end of the hydraulic telescopic rod 9 is fixedly connected to the rectangular tube group 10, and the top end of the hydraulic telescopic rod 9 is fixedly connected to the bottom surface of the detection pool cover 2. The hydraulic telescopic rod 9 can drive the jet defoaming mechanism to move up and down back and forth, so as to realize the back and forth sweeping of the working surface of the electrode plate and avoid the occurrence of defoaming dead corners.

[0027] In this embodiment, the submersible pump 8 is electrically connected to the frequency converter 12 and the power supply outside the detection pool body 1 via wires. The speed of the submersible pump 8 can be adjusted by the frequency converter 12, thereby changing the flow rate and pressure of the jet water flow to adapt to different defoaming requirements.

[0028] In this embodiment, a horizontal filter screen 13 is provided inside the detection pool body 1. The outer periphery of the filter screen 13 is fixedly connected to the inner wall of the detection pool body 1. The filter screen 13 is located above the submersible pump 8 and below the three electrode plates. It is used to intercept suspended bubbles in the electrolyte and prevent these bubbles from being sucked into the submersible pump 8 and finally jetted onto the electrode plates, thus affecting the defoaming effect. The filter screen 13 is provided with through holes for the water delivery hose 7 and wires to pass through.

[0029] In this embodiment, an ultrasonic generator 14 is fixedly installed on the upper surface of the filter screen 13. The ultrasonic generator 14 is used to emit ultrasonic waves into the electrolyte to break and remove tiny stubborn bubble nuclei on the surface of the electrode plate by utilizing the cavitation effect, especially bubbles in the micropores or edge areas of the electrode that are difficult for the jet to directly reach, forming a synergistic effect with the jet defoaming.

[0030] In this embodiment, the support tubes 6 are all installed through the detection pool cover 2 and are fixedly connected to the detection pool cover 2. The power supply lines connected to the corresponding electrode plates are led out to the outside of the detection pool body 1 through the support tubes 6.

[0031] In this embodiment, the submersible pump 8 is attached to the bottom wall of the detection pool body 1 by a suction cup, which facilitates disassembly and maintenance.

[0032] The above description is merely a preferred embodiment of the present invention and does not constitute any limitation on the technical scope of the present invention. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. A small-scale pump-jet defoaming electrochemical detection cell, characterized in that, The device includes a detection pool body with a detection pool cover installed at its top. The detection pool body contains an electrolyte solution, and an anode plate, a cathode plate, and a reference electrode plate are disposed within the electrolyte solution. The anode plate, cathode plate, and reference electrode plate are respectively fixedly connected to the detection pool cover via corresponding support pipes. A jet defoaming mechanism is disposed around the anode plate and cathode plate to eliminate air bubbles adhering to the electrode plate surface. Each jet defoaming mechanism is connected to a submersible pump installed at the bottom of the detection pool body via a water supply hose. The jet defoaming mechanism is connected to the detection pool cover via a lifting mechanism.

2. The small-scale pump-jet defoaming electrochemical detection cell according to claim 1, characterized in that, The jet defoaming mechanism includes a rectangular tube assembly formed by connecting two long jet water pipes and two short jet water pipes. The two rectangular tube assemblies respectively surround the periphery of the anode plate and the cathode plate, and the two long jet water pipes are parallel to the working surface of the corresponding electrode plate. Several nozzles are evenly arranged along the length of the long jet water pipes for spraying water onto the working surface of the electrode plate. The rectangular tube assembly is connected to the outlet of the corresponding submersible pump through the water delivery hose, and the rectangular tube assembly is connected to the detection pool cover through the lifting mechanism.

3. The small-scale pump-jet defoaming electrochemical detection cell according to claim 2, characterized in that, All nozzles are tilted upwards and positioned toward the corresponding electrode plates.

4. The small-scale pump-jet defoaming electrochemical detection cell according to claim 2, characterized in that, The lifting mechanism is a hydraulic telescopic rod, the bottom end of which is fixedly connected to the rectangular tube assembly, and the top end of which is fixedly connected to the bottom surface of the test pool cover.

5. A small-scale pump-jet defoaming electrochemical detection cell according to claim 1, characterized in that, The submersible pump is electrically connected in sequence to the frequency converter and power supply outside the detection pool body via wires.

6. A small-scale pump-jet defoaming electrochemical detection cell according to claim 5, characterized in that, The detection pool body is equipped with a horizontal filter screen inside. The outer periphery of the filter screen is fixedly connected to the inner wall of the detection pool body. The filter screen is located above the submersible pump and below the three electrode plates. The filter screen has through holes for the water delivery hose and the wire to pass through.

7. A small-scale pump-jet defoaming electrochemical detection cell according to claim 6, characterized in that, An ultrasonic generator is fixedly installed on the upper surface of the filter screen.

8. A small-scale pump-jet defoaming electrochemical detection cell according to claim 1, characterized in that, The support tubes all penetrate the detection pool cover and are fixedly connected to the detection pool cover. The power supply lines connected to the corresponding electrode plates are led out to the outside of the detection pool body through the support tubes.

9. A small-scale pump-jet defoaming electrochemical detection cell according to claim 1, characterized in that, The submersible pump is attached to the bottom wall of the detection pool body by a suction cup.

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