PH detection device for high-temperature lithium battery material recovery solution

Abstract

The utility model discloses a pH detection device for a high-temperature lithium battery material recovery solution, which comprises a pH value detection structure inserted into a detection port of a reaction kettle, the pH value detection structure is mounted on a six-axis manipulator, the six-axis manipulator is fixed on a base, the cleaning structure is mounted on the base, a cleaning port is arranged on a cylinder barrel of the cleaning structure, and the cleaning port is communicated with the reaction kettle. And an electrode of the pH value detection structure is connected with the computer through a communication line. According to the utility model, the pH value in the reaction kettle can be monitored on line in real time, the harm of a high-temperature environment of a lithium battery waste treatment solution to a human body is avoided, meanwhile, the electrode is cleaned in time by adopting an automatic cleaning structure, the service life of the electrode is prolonged, the detection precision is improved, and the recovery efficiency of a battery material is ensured.

Description

Technical Field

[0001] The utility model relates to a battery waste treatment solution detection device, in particular to a pH detection device for high-temperature lithium battery material recovery solution. Background Art

[0002] PH analysis and detection is an important control parameter in the battery recycling process. The battery waste recycling process goes through several stages such as alkaline leaching, acid leaching and graphite removal, impurity removal, NMC precipitation and lithium ion recovery. During the leaching of black materials and the removal of impurities, the pH value change of the solution in the reactor should be detected. The battery waste treatment solution has complex working conditions such as high temperature (usually 80-90 degrees Celsius), high corrosion, and particulate matter. In the battery waste treatment process, black particles are always present, and some black particles are attached to the electrode. If the battery waste attached to the electrode cannot be cleaned off in time in the mixed solution, it will not only affect the measurement accuracy of the electrode, but also the working life of the electrode is extremely short under this condition, and the electrode needs to be replaced frequently; because the battery waste treatment solution is a high-temperature solution, the battery recycling process in the reactor needs to be stopped when the manual electrode is replaced, thereby reducing the recycling efficiency of the battery waste. Summary of the invention

[0003] The utility model aims to overcome the defects of the prior art and provide a pH detection device for high-temperature lithium battery material recovery solution which is safe and can improve the service life and detection accuracy of electrodes and ensure the recovery efficiency of battery materials.

[0004] In order to achieve the above object, the technical solution of the utility model is as follows:

[0005] The utility model discloses a pH value detection device for high-temperature lithium battery material recovery solution, comprising a pH value detection structure and a cleaning structure;

[0006] The pH value detection structure includes a pH value detection structure installed on a six-axis manipulator, the six-axis manipulator is installed on a base, the pH value detection structure includes a cylinder fixed on a flange, a pH electrode is fixed on the telescopic rod of the cylinder, and the flange is fixedly connected to the end of the sixth rotating shaft of the six-axis manipulator; the pH electrode is connected to a computer through a communication line, and the pH electrode can pass through the detection port of the reactor and extend into or exit the reactor under the drive of the six-axis manipulator and the cylinder;

[0007] The cleaning structure includes a cylinder installed on a base, a plurality of cleaning ports are opened on the side wall of the cylinder, a drainage port is opened at the bottom of the cylinder, a water inlet cylinder is fixed to the outer wall of the cylinder by a spacer ring, and two water inlets are opened on the side wall of the water inlet cylinder. The pH electrode can be inserted into the cylinder or withdrawn from the cylinder cavity under the drive of a six-axis manipulator.

[0008] Effective effect of the utility model: the utility model adopts a six-axis manipulator to drive the electrode telescopic structure to perform pH value detection and analysis in the reactor, and can monitor the pH value in the reactor online in real time, avoiding the harm of the high temperature environment of the lithium battery waste treatment solution to the human body. At the same time, an automatic cleaning structure is used to clean the electrode in time, thereby increasing the service life of the electrode and improving the detection accuracy, ensuring the recovery efficiency of the battery material. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is a schematic diagram of the application structure of a pH detection device for high-temperature lithium battery material recovery solution of the utility model;

[0010] Figure 2 for Figure 1 The structural schematic diagram of the pH value detection structure in the device of the utility model is shown;

[0011] Figure 3 for Figure 1 The schematic diagram of the structure of the cleaning structure in the device of the utility model is shown. DETAILED DESCRIPTION

[0012] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments:

[0013] As shown in the accompanying drawings, a pH detection device for high-temperature lithium battery material recovery solution includes a pH value detection structure and a cleaning structure.

[0014] The pH value detection structure includes a pH value detection structure 2 installed on a six-axis manipulator 3. The six-axis manipulator can be an existing KUKA device. The six-axis manipulator 3 is installed on a base 5. The pH value detection structure 2 includes a cylinder fixed on a flange 2-1, and an electrode 2-3 is fixed on the telescopic rod 2-2 of the cylinder.

[0015] The flange 2-1 is fixed to the end of the sixth rotating shaft of the six-axis manipulator 3 by bolts; the electrode 2-3 is connected to the computer through a communication line, and the electrode is available on the market. The electrode can pass through the detection port of the reactor and extend into the reactor under the drive of the six-axis manipulator and the cylinder.

[0016] The cleaning structure 4 comprises a cylinder 4-1 mounted on a base 5, with a plurality of cleaning ports on the side wall of the cylinder 4-1 and a drain port 4-4 at the bottom of the cylinder 4-1. A water inlet 4-2 is fixed to the outer wall of the cylinder 4-1 via a spacer ring, and two water inlets 4-3 are opened on the side wall of the water inlet 4-2.

[0017] The working principle of this device is as follows:

[0018] When it is necessary to detect the pH value of the lithium battery waste treatment solution in the reactor 1, adjust the angle of the six-axis manipulator 3 so that the pH value detection structure 2 is inserted into the detection port of the reactor 1, and the telescopic rod 2-2 of the cylinder is extended so that the electrode 2-3 is inserted into the lithium battery waste treatment solution. The sixth rotating axis of the six-axis manipulator 3 rotates one circle, and the electrode 2-3 detects the pH value of the lithium battery waste treatment solution in the reactor 1. The detection result is transmitted to the computer through the communication line, and the detection personnel obtain the pH value of the lithium battery waste treatment solution through the computer; when the detection is completed, the cylinder 2-2 of the pH value detection structure 2 retracts, driving the electrode 2-3 to separate from the lithium battery Pool waste treatment solution, the inspection personnel adjust the six-axis manipulator 3 to drive the pH value detection structure 2 out of the detection port of the reactor 1, and then the first rotation axis of the six-axis manipulator 3 rotates 180 degrees, and the electrode 2-3 of the pH value detection structure 2 is inserted into the cylinder 4-1 of the cleaning structure 4, and the cleaning liquid is sprayed into the cylinder 4-1 through the two water inlets 4-3 of the cleaning structure 4 and the multiple cleaning ports on the side wall of the cylinder 4-1. During the cleaning process, the sixth rotation axis of the six-axis manipulator 3 rotates one circle to clean some black particles attached to the surface of the electrode 2-3. After the cleaning is completed, the cleaning liquid is discharged through the drain port 4-4, waiting for the next pH value detection work.

Claims

1. A pH value detection device for high-temperature lithium battery material recovery solution, characterized in that: Including pH value detection structure and cleaning structure; The pH value detection structure includes a pH value detection structure installed on a six-axis manipulator, the six-axis manipulator is installed on a base, the pH value detection structure includes a cylinder fixed on a flange, a pH electrode is fixed on the telescopic rod of the cylinder, and the flange is fixedly connected to the end of the sixth rotating shaft of the six-axis manipulator; the pH electrode is connected to a computer through a communication line, and the pH electrode can pass through the detection port of the reactor and extend into or exit the reactor under the drive of the six-axis manipulator and the cylinder; The cleaning structure includes a cylinder installed on a base, a plurality of cleaning ports are opened on the side wall of the cylinder, a drainage port is opened at the bottom of the cylinder, a water inlet cylinder is fixed to the outer wall of the cylinder by a spacer ring, and two water inlets are opened on the side wall of the water inlet cylinder. The pH electrode can be inserted into the cylinder or withdrawn from the cylinder cavity under the drive of a six-axis manipulator.

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