A self-cleaning grinding device for primary cell detection

Abstract

The utility model relates to primary cell detection technical field, concretely for a kind of self-cleaning grinding device for primary cell detection, including mounting seat, the bottom end fixed mounting of mounting seat has stirrer, the bottom end fixed connection of mounting seat has connecting support, the bottom end fixed connection of connecting support has grinding cylinder, the grinding cylinder is filled with grinding ball, the bottom end fixed connection of mounting seat has two symmetrical arrangement guide column, the lifter plate that can slide up and down is connected between two the guide column, detection electrode is installed on the lifter plate, the utility model's purpose is to realize real-time removal electrode surface oxide layer, maintain electrochemical reaction stability, improve the precision and continuity of water quality monitoring data, reduce artificial maintenance cost, prolong electrode life, to solve the technical problem that manual periodic cleaning, shutdown operation time is longer, the process of interrupting monitoring is longer.

Description

Technical Field

[0001] This utility model relates to the field of galvanic cell testing technology, specifically a self-cleaning grinding device for galvanic cell testing. Background Technology

[0002] Online water quality monitoring requires real-time tracking of key parameters in water bodies, such as dissolved oxygen, heavy metal ions, and pH levels. Galvanic cell-based detection is a common tool for achieving this goal. Its principle is based on the redox reaction between the analyte and the electrode, generating a change in current or potential, which is then converted into a signal reflecting the substance's concentration. For example, based on a galvanic cell reaction, the current magnitude is positively correlated with the dissolved oxygen concentration in the water. Through the gain and loss of electrons by metal ions on the electrode surface, a concentration-related potential signal is generated. The core of this type of detection is the electrode, and the state of the electrode surface directly determines the detection accuracy.

[0003] In the bare electrode detection of the galvanic cell method for online water quality monitoring, the bare electrode directly contacts the water sample to undergo an electrochemical reaction. However, during long-term operation, the electrode surface is prone to oxide layer deposition and impurity adsorption. The oxide layer hinders the electrochemical reaction, causing the detection signal to drift and resulting in a decrease in detection accuracy. Existing cleaning methods rely on manual cleaning at regular intervals, which results in long downtime and prolonged interruption of monitoring. Utility Model Content

[0004] The purpose of this invention is to provide a self-cleaning grinding device for galvanic cell testing, which can remove the oxide layer on the electrode surface in real time, maintain the stability of electrochemical reaction, improve the accuracy and continuity of water quality monitoring data, reduce manual maintenance costs, and extend electrode life, thereby solving the technical problems of long downtime and interruption of monitoring due to manual periodic cleaning.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A self-cleaning grinding device for testing galvanic cells includes a mounting base, a stirrer fixedly mounted at the bottom of the mounting base, a connecting bracket fixedly connected to the bottom of the mounting base, a grinding cylinder fixedly connected to the bottom of the connecting bracket, the grinding cylinder being filled with grinding balls, two symmetrically arranged guide columns fixedly connected to the bottom of the mounting base, a sliding lifting plate connected between the two guide columns, a detection electrode mounted on the lifting plate, and a through hole for the detection electrode to pass through at the bottom of the grinding cylinder.

[0007] Preferably, the outer periphery of the grinding cylinder has a cylindrical mesh structure, and the mesh aperture is smaller than the diameter of a single grinding ball.

[0008] Preferably, the stirrer includes a reducer, a rotating disk, and a stirring rod. The stirring rod is fixedly connected to the bottom end of the rotating disk and extends into the grinding cylinder. The rotating disk is rotatably connected to the top end of the grinding cylinder, and the rotating disk is coaxially fixedly connected to the output end of the reducer.

[0009] Preferably, a sealing plug is movably embedded in the through hole at the bottom end of the grinding cylinder, and the sealing plug is fixedly connected to the top end of the detection electrode.

[0010] Preferably, a drive screw is rotatably connected to the surface of the guide column, the drive screw moves through the surface of the lifting plate, and the drive screw and the lifting plate are threaded together. A second drive motor is installed at the top of the mounting base, and the output shaft of the second drive motor is connected to the drive screw.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. The electrodes of a galvanic cell will undergo oxidation and wear or surface passivation after long-term use. Grinding can remove the passivation layer and expose a fresh reaction surface, ensuring the stable progress of the redox reaction. The grinding balls in the grinding cylinder driven by the stirrer collide and rub against the electrode surface, using mechanical force to efficiently remove the oxide layer and restore the conductivity of the electrode. This is beneficial for real-time removal of the oxide layer on the electrode surface and ensures the stability of the redox reaction of the galvanic cell.

[0013] 2. Seamless switching between grinding and testing improves operational efficiency. The outer periphery of the grinding cylinder adopts a cylindrical mesh structure, which not only prevents the grinding balls from leaking out, but also allows the electrode to directly contact the external water sample through the mesh after the electrode is moved into the grinding cylinder. Grinding and testing can be seamlessly switched without disassembling or transferring the electrode, eliminating the traditional steps of manual cleaning and reinstalling the electrode, greatly shortening the operation time and improving the testing efficiency.

[0014] 3. The automated design reduces human intervention and is suitable for various scenarios. The device controls the lifting and lowering of the electrodes through the second drive motor and drives the grinding through the first drive motor. No manual operation is required throughout the process, reducing the risk of contamination from manual contact with the electrodes. It is especially suitable for continuous testing scenarios such as water quality. Attached Figure Description

[0015] Figure 1 This is a front sectional view of the present invention.

[0016] In the diagram: 1. Mounting base; 2. First drive motor; 3. Reducer; 4. Rotary disk; 5. Stirring rod; 6. Grinding cylinder; 7. Grinding ball; 8. Connecting bracket; 9. Sealing plug; 10. Detection electrode; 11. Detection connector; 12. Lifting plate; 13. Drive screw; 14. Guide column; 15. Second drive motor. Detailed Implementation

[0017] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1 This utility model provides a technical solution: a self-cleaning grinding device for primary battery testing, including a mounting base 1. A stirrer is fixedly mounted at the bottom of the mounting base 1. The stirrer is driven by a first drive motor 2. Specifically, the first drive motor 2 is mounted at the top of the mounting base 1. The output shaft of the first drive motor 2 is fixedly connected to the input end of the stirrer. The first drive motor 2 is an adjustable speed motor, such as a stepper motor, to provide stable power output. Starting the first drive motor 2 drives the stirrer to operate. A connecting bracket 8 is fixedly connected to the bottom of the mounting base 1, and a grinding cylinder 6 is fixedly connected to the bottom of the connecting bracket 8. The grinding cylinder 6 is filled with grinding balls 7, which are made of wear-resistant materials such as ceramic or stainless steel. The filling volume accounts for 60-70% of the volume of the grinding cylinder 6. The bottom end of the mounting base 1 is fixedly connected to two symmetrically arranged guide columns 14. A sliding lifting plate 12 is connected between the two guide columns 14. The detection electrode 10 is installed on the lifting plate 12. The bottom end of the grinding cylinder 6 is provided with a through hole for the detection electrode 10 to pass through. When it is necessary to grind the surface of the detection electrode 10, or when it is necessary to remove the oxide layer on the surface of the detection electrode 10, the lifting plate 12 moves upward, driving the detection electrode 10 through the through hole into the grinding cylinder 6. At this time, the first drive motor 2 is started, and the stirring rod 5 stirs the grinding ball 7. The grinding ball 7 collides and rubs with the surface of the detection electrode 10 under the stirring force, thereby achieving the grinding and removal of the oxide layer.

[0019] The outer periphery of the grinding cylinder 6 is a cylindrical mesh structure with a mesh aperture smaller than the diameter of a single grinding ball 7. This not only prevents the grinding ball 7 from moving out of the cylinder, but also ensures that the detection electrode 10 remains in contact with the external water sample after it is moved in. The inner wall of the grinding cylinder 6 is coated with a polytetrafluoroethylene anti-stick coating to reduce the adhesion of dirt.

[0020] The agitator includes a reducer 3, a rotating disk 4, and a stirring rod 5. The stirring rod 5 is fixedly connected to the bottom end of the rotating disk 4 and extends into the grinding cylinder 6. The rotating disk 4 is rotatably connected to the top end of the grinding cylinder 6. The rotating disk 4 is coaxially fixedly connected to the output end of the reducer 3. During operation, the power of the first drive motor 2 is transmitted to the rotating disk 4 through the gear transmission in the reducer 3, driving the rotating disk 4 to rotate, which in turn drives the stirring rod 5 to stir in the grinding cylinder 6. The reducer 3 has a conventional structure and is mainly used to reduce the speed and increase the output torque. The specific arrangement of its internal gears is existing technology and can be adapted to the arrangement without affecting the implementation of this embodiment, so it will not be described in detail here.

[0021] A sealing plug 9 is movably fitted into the through hole at the bottom of the grinding cylinder 6. The sealing plug 9 is used to block the through hole. When the detection electrode 10 is moved out of the grinding cylinder 6, the through hole is blocked. The sealing plug 9 is fixedly connected to the top of the detection electrode 10 and moves up and down synchronously with the detection electrode 10. When the detection electrode 10 needs to be moved out of the grinding cylinder 6, the lifting plate 12 drives the detection electrode 10 to move down, and the sealing plug 9 moves down and gradually fits into the through hole. By controlling the stop position of the lifting plate 12, the sealing plug 9 can be made to completely block the through hole, so that the through hole is sealed at the same time as the detection electrode 10 is moved out of the grinding cylinder 6.

[0022] A detection connector 11 is fixedly installed on the surface of the lifting plate 12. The detection connector 11 is electrically connected to the bottom end of the detection electrode 10 and is used to connect the detection electrode 10 to an external detection instrument. When the detection electrode 10 comes into contact with the sample water, the electrical signal generated by the principle of the galvanic cell method is transmitted to the instrument through the detection connector 11 to realize the detection of the bare electrode.

[0023] A drive screw 13 is rotatably connected to the surface of the guide post 14. The drive screw 13 moves through the surface of the lifting plate 12 and is threadedly connected to the lifting plate 12. A second drive motor 15 is installed at the top of the mounting base 1. The output shaft of the second drive motor 15 is connected to the drive screw 13 for driving the drive screw 13 to rotate. When the second drive motor 15 starts, the drive screw 13 rotates and drives the lifting plate 12 to slide up and down along the axial direction of the guide post 14 through the thread action. The guide post 14 has a corresponding groove to restrict the rotation of the lifting plate 12 and ensure its smooth linear movement.

[0024] The specific steps of this plan are as follows: Detection preparation: Start the second drive motor 15, and its output shaft drives the drive screw 13 to rotate. Through the thread action, the lifting plate 12 moves axially downward along the guide column 14 until the detection electrode 10 is completely outside the grinding cylinder 6. At this time, the sealing plug 9 still blocks the through hole.

[0025] In the galvanic cell test, after the detection electrode 10 comes into contact with the external water sample, the detection electrode 10 is connected to the external detection instrument through the detection connector 11. The detection is performed using the principle of the galvanic cell method. The electrical signal is transmitted to the external detection instrument through the detection connector 11, and the detection data is recorded.

[0026] Cleaning of detection electrode 10 and removal of oxide layer: After detection, if it is necessary to remove the oxide layer on the surface of detection electrode 10, start the second drive motor 15 to make the drive screw 13 rotate in the opposite direction, drive the lifting plate 12 to move upward along the guide column 14, and the detection electrode 10 enters the grinding cylinder 6 through the through hole until it reaches the appropriate grinding position. Start the first drive motor 2, and the power is transmitted to the rotating disk 4 through the reducer 3, which drives the stirring rod 5 to rotate in the grinding cylinder 6, stirring the grinding balls 7. The grinding balls 7 collide and rub against the surface of the detection electrode 10 under the push of the stirring force, so as to achieve the grinding and removal of the oxide layer.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A self-cleaning grinding device for testing galvanic cells, comprising a mounting base (1), characterized in that: A stirrer is fixedly installed at the bottom of the mounting base (1), a connecting bracket (8) is fixedly connected at the bottom of the mounting base (1), a grinding cylinder (6) is fixedly connected at the bottom of the connecting bracket (8), grinding balls (7) are filled inside the grinding cylinder (6), two symmetrically arranged guide columns (14) are fixedly connected at the bottom of the mounting base (1), a lifting plate (12) that can slide up and down is connected between the two guide columns (14), a detection electrode (10) is installed on the lifting plate (12), and a through hole for the detection electrode (10) to pass through is provided at the bottom of the grinding cylinder (6).

2. The self-cleaning grinding device for galvanic cell testing according to claim 1, characterized in that, The outer periphery of the grinding cylinder (6) is a cylindrical mesh structure, and the mesh aperture is smaller than the diameter of a single grinding ball (7).

3. The self-cleaning grinding device for galvanic cell testing according to claim 1, characterized in that, The stirrer includes a reducer (3), a rotating disk (4) and a stirring rod (5). The stirring rod (5) is fixedly connected to the bottom end of the rotating disk (4) and extends into the grinding cylinder (6). The rotating disk (4) is rotatably connected to the top end of the grinding cylinder (6). The rotating disk (4) is coaxially fixedly connected to the output end of the reducer (3).

4. The self-cleaning grinding device for galvanic cell testing according to claim 1, characterized in that, A sealing plug (9) is movably embedded in the through hole at the bottom end of the grinding cylinder (6), and the sealing plug (9) is fixedly connected to the top end of the detection electrode (10).

5. The self-cleaning grinding device for galvanic cell testing according to claim 1, characterized in that, The surface of the guide post (14) is rotatably connected to a drive screw (13), the drive screw (13) moves through the surface of the lifting plate (12), and the drive screw (13) and the lifting plate (12) are threaded together. The top of the mounting base (1) is equipped with a second drive motor (15), and the output shaft of the second drive motor (15) is connected to the drive screw (13) in a transmission manner.

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