A simple device for detecting the purity of lithium carbonate.

Abstract

This utility model discloses a simple device for detecting the purity of lithium carbonate, including a detection tank and a drain pipe. The drain pipe is installed on one side of the detection tank. A first sealing cap and a second sealing cap are respectively provided at the openings of the detection tank and the drain pipe. A sample inlet is located at the center of the first sealing cap, and an adjusting sealing component is provided at the sample inlet. An air inlet pipe is fixedly installed in the center of the sample inlet, and the adjusting sealing component is in sealing contact with the air inlet pipe. A connecting pipe is provided between the detection tank and the drain pipe, passing through the first and second sealing caps. A pressure discharge pipe is provided inside the drain pipe, passing through the second sealing cap and connecting to the outside. A sample holder is movably fitted at the bottom of the air inlet pipe via a connecting rod. The advantages of this utility model are that the purity of lithium carbonate can be easily and intuitively obtained by simply performing a quantitative chemical reaction and accurately detecting the volume of the generated gas in the sealed detection tank. It has a simple structure, is easy to operate, and has higher stability.

Description

Technical Field

[0001] This utility model relates to the field of lithium carbonate purity detection technology, and in particular to a simple device for detecting the purity of lithium carbonate. Background Technology

[0002] Lithium carbonate is a key raw material in lithium battery production, and its purity directly affects battery performance, such as energy density and cycle life. Currently, the industry mainly uses potentiometric titration to detect the purity of lithium carbonate. However, this method relies on a precision automatic potentiometric titrator, with a single device costing over 100,000 yuan. Furthermore, the testing process is complex, requiring standard solution preparation, electrode calibration, etc., and a single test takes more than 50 minutes, making it difficult to meet the needs of rapid screening on the production site.

[0003] Existing chemical titration methods require calculating purity through acid-base neutralization reactions, but these methods have the following problems:

[0004] High equipment costs: Equipment such as potentiometric titrators are expensive, making them difficult for small and medium-sized enterprises to adopt.

[0005] Complex operation: Requires professional personnel to operate, and the steps are complicated, such as electrode maintenance and calibration.

[0006] Time-consuming: A single test takes more than 30 minutes, and it is impossible to provide real-time feedback on production quality.

[0007] Environmental sensitivity: Temperature fluctuations or reagent purity deviations can easily lead to results errors. Utility Model Content

[0008] The purpose of this invention is to provide a simple device for detecting the purity of lithium carbonate. It only requires a simple quantitative chemical reaction and precise detection of the volume of the generated gas in a sealed detection container to obtain the purity of lithium carbonate simply and intuitively. It has a simple structure, is easy to operate, and has higher stability.

[0009] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0010] A simple device for detecting the purity of lithium carbonate, characterized in that it includes a detection tank and a drain pipe, the drain pipe being installed on one side of the detection tank, a first sealing cap and a second sealing cap being respectively provided at the openings of the detection tank and the drain pipe, a sample inlet starting from the middle of the first sealing cap, an adjusting sealing component being provided at the sample inlet, an air inlet pipe being fixedly provided in the center of the sample inlet, the adjusting sealing component being in sealed contact with the air inlet pipe, a connecting pipe being provided between the detection tank and the drain pipe passing through the first sealing cap and the second sealing cap, a pressure discharge pipe being provided inside the drain pipe passing through the second sealing cap and communicating with the outside, and a sample holder being movably fitted at the bottom of the air inlet pipe via a connecting rod.

[0011] Preferably, the air inlet pipe is connected to the air inlet control device at one end outside the detection tank, and the air inlet pipe has multiple sets of air inlets at one end inside the detection tank, with the air inlets positioned above the liquid level inside the detection tank.

[0012] Preferably, the adjusting sealing assembly includes an adjusting ring, a sealing plate, and a worm gear. The first sealing cover has an annular receiving cavity at the sample inlet. The adjusting ring is rotatably disposed within the annular receiving cavity. Multiple sets of sealing plates are arranged in a circular array within the annular receiving cavity, and adjacent sealing plates slide relative to each other. An arc-shaped groove is provided on the adjusting ring corresponding to each set of sealing plates, and a slider is limited and slidably disposed within the corresponding arc-shaped groove of each set of sealing plates. The worm gear is fixedly installed on the outer edge of the adjusting ring.

[0013] Preferably, an adjusting motor is also fixedly installed inside the first sealing cover on one side of the worm gear, and the output end of the adjusting motor is also connected to a worm gear, which meshes with the worm gear for transmission.

[0014] Preferably, each of the sealing plates has a sealing rubber layer on its inner side, and the sealing plate is sealed to the air intake pipe through the sealing rubber layer.

[0015] Preferably, both ends of the connecting pipe are respectively located above the liquid surface in the detection tank and the drain pipe, and the bottom end of the pressure drain pipe is located at the bottom of the drain pipe and below the liquid surface.

[0016] Preferably, a retaining ring is provided at one end of the connecting pipe inside the detection tank, and at least two sets of retaining rings are provided above and below, with the cross-section of the retaining rings angled upwards.

[0017] Preferably, the connecting pipe and the pressure pipe are each provided with a sealing ring at the connection point with the first sealing cover and the second sealing cover.

[0018] Preferably, the sample holder is circular, and the thickness of the outer ring at the top of the sample holder is greater than the thickness at the center, forming a slope.

[0019] Preferably, a magnet is provided at the bottom of the sample holder, an electromagnet with changeable polarity is provided at the bottom of the detection vessel, and a limit plate is provided at the bottom of the connecting rod below the sample holder.

[0020] In summary, this utility model has the following beneficial effects:

[0021] 1. This utility model achieves volume detection of generated gas by exhausting the generated gas, thereby enabling a simple determination of the purity of lithium carbonate.

[0022] 2. This utility model can achieve a seal between the first sealing cover and the air inlet pipe by adjusting the sealing component, thereby ensuring the sealing of the device during the reaction process while adding the sample beforehand, thus improving the detection accuracy.

[0023] 3. This utility model uses a sample holder with a magnet installed at the bottom, which is movably sleeved on a connecting rod. By using the magnetic pole change of an energized electromagnet, the sample holder can be lifted above the surface of the reaction liquid or immersed in the reaction liquid, thus completing the sealing after sample addition. After sealing, the sample sinks to carry out the reaction. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall internal structure of this utility model;

[0025] Figure 2 yes Figure 1 Schematic diagram of the structure at point A;

[0026] Figure 3 This is a schematic diagram of the structure of the first sealing cap. Detailed Implementation

[0027] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. These embodiments do not constitute a limitation on this utility model.

[0028] like Figures 1 to 3 The device shown is a simple lithium carbonate purity testing device, including a testing tank 1 and a drain pipe 2. The drain pipe 2 is installed on one side of the testing tank 1. A first sealing cover 3 and a second sealing cover 4 are respectively provided at the openings of the testing tank 1 and the drain pipe 2. A sample inlet 5 is provided at the middle of the first sealing cover 3. An adjusting sealing component is provided at the sample inlet 5. An air inlet pipe 6 is fixedly provided in the center of the sample inlet 5. The adjusting sealing component is in sealing contact with the air inlet pipe 6. A connecting pipe 7 is provided between the testing tank 1 and the drain pipe 2, passing through the first sealing cover 3 and the second sealing cover 4. A pressure discharge pipe 8 is provided inside the drain pipe 2, passing through the second sealing cover 4 and communicating with the outside. A sample holder 10 is movably sleeved at the bottom of the air inlet pipe 6 through a connecting rod 9.

[0029] The air intake pipe 6 is connected to the air intake control device at one end outside the detection tank 1, and multiple air inlets 11 are opened at one end inside the detection tank 1. The height of the air inlets 11 is set above the liquid level inside the detection tank 1.

[0030] The adjusting sealing assembly includes an adjusting ring 12, a sealing plate 13, and a worm gear 14. The first sealing cover 3 has an annular receiving cavity 15 at the sample inlet 5. The adjusting ring 12 is rotatably disposed in the annular receiving cavity 15. Multiple sets of sealing plates 13 are arranged in an annular array in the annular receiving cavity 15. Adjacent sealing plates 13 slide relative to each other. An arc-shaped groove 16 is provided on the adjusting ring corresponding to each set of sealing plates 13. A slider 17 is limited and slidably disposed in the arc-shaped groove 16 corresponding to each set of sealing plates 13. The worm gear 14 is fixedly installed on the outer edge of the adjusting ring 12.

[0031] An adjusting motor 18 is also fixedly installed inside the first sealing cover 3 on one side of the worm gear 14. The output end of the adjusting motor 18 is also connected to a worm 19, which meshes with the worm gear 14 for transmission.

[0032] Each sealing plate 13 has a sealing rubber layer 20 on its inner side, and the sealing plate 13 is sealed to the air intake pipe 6 through the sealing rubber layer 20.

[0033] Both ends of the connecting pipe 7 are respectively located above the liquid level in the detection tank 1 and the drain pipe 2, and the bottom end of the pressure discharge pipe 8 is located at the bottom of the drain pipe 2 and below the liquid level.

[0034] One end of the connecting pipe 7 is provided with a retaining ring 21 inside the testing tank 1. At least two sets of retaining rings 21 are provided above and below, and the cross section of the retaining ring 21 is set obliquely upward.

[0035] The connecting pipe 7 and the pressure discharge pipe 8 are both equipped with sealing rings 22 at the connection points with the first sealing cover 3 and the second sealing cover 4.

[0036] The sample holder 10 is circular, and the thickness of the outer ring at the top of the sample holder 10 is greater than the thickness of the center, forming a slope.

[0037] A magnet 23 is provided at the bottom of the sample holder 10, an electromagnet 24 with changeable polarity is provided at the bottom of the detection tank 1, and a limit plate 25 is provided at the bottom of the connecting rod 9 below the sample holder 10.

[0038] This invention enables the volume detection of generated gas by exhausting the generated gas, thereby providing a simple way to determine the purity of lithium carbonate.

[0039] This invention can achieve a seal between the first sealing cover and the air inlet pipe by adjusting the sealing component, thereby ensuring the airtightness of the device during the reaction process while adding the sample beforehand, and thus improving the detection accuracy.

[0040] This invention features a sample holder with a magnet mounted on its bottom that is movably mounted on a connecting rod. By utilizing the magnetic pole changes of an energized electromagnet, the sample holder can be lifted above the surface of the reaction liquid or immersed in the reaction liquid, thus completing the sealing process after sample addition. After sealing, the sample sinks to allow the reaction to proceed.

[0041] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Those skilled in the art can make various modifications or equivalent substitutions to the present utility model within its substance and protection scope, and such modifications or equivalent substitutions should also be considered to fall within the protection scope of the present utility model's technical solution.

Claims

1. A simple device for detecting the purity of lithium carbonate, characterized in that, The device includes a testing tank and a drain pipe. The drain pipe is installed on one side of the testing tank. A first sealing cap and a second sealing cap are respectively provided at the openings of the testing tank and the drain pipe. A sample inlet is located at the center of the first sealing cap. An adjusting sealing component is provided at the sample inlet. An air inlet pipe is fixedly installed at the center of the sample inlet. The adjusting sealing component is in sealing contact with the air inlet pipe. A connecting pipe is provided between the testing tank and the drain pipe, passing through the first sealing cap and the second sealing cap. A pressure discharge pipe is provided inside the drain pipe, passing through the second sealing cap and communicating with the outside. A sample holder is movably mounted on the bottom of the air inlet pipe via a connecting rod.

2. The simple device for detecting the purity of lithium carbonate according to claim 1, characterized in that: The air intake pipe is connected to the air intake control device at one end outside the detection tank, and multiple air inlets are opened at one end inside the detection tank. The height of the air inlets is set above the liquid level inside the detection tank.

3. The simple device for detecting the purity of lithium carbonate according to claim 1, characterized in that: The adjusting sealing assembly includes an adjusting ring, a sealing plate, and a worm gear. The first sealing cover has an annular receiving cavity at the sample inlet. The adjusting ring is rotatably disposed within the annular receiving cavity. Multiple sets of sealing plates are arranged in a ring array within the annular receiving cavity, and adjacent sealing plates slide relative to each other. An arc-shaped groove is provided on the adjusting ring corresponding to each set of sealing plates, and a slider is limited and slidably disposed within the corresponding arc-shaped groove of each set of sealing plates. The worm gear is fixedly installed on the outer edge of the adjusting ring.

4. The simple device for detecting the purity of lithium carbonate according to claim 3, characterized in that: An adjusting motor is also fixedly installed inside the first sealing cover on one side of the worm gear. The output end of the adjusting motor is also connected to a worm, which meshes with the worm gear for transmission.

5. A simple device for detecting the purity of lithium carbonate according to claim 4, characterized in that: Each set of sealing plates has a sealing rubber layer on its inner side, and the sealing plate is sealed to the air intake pipe through the sealing rubber layer.

6. A simple device for detecting the purity of lithium carbonate according to claim 1, characterized in that: Both ends of the connecting pipe are respectively located above the liquid level in the detection tank and the drain pipe, while the bottom end of the pressure drain pipe is located at the bottom of the drain pipe and below the liquid level.

7. A simple device for detecting the purity of lithium carbonate according to claim 1, characterized in that: One end of the connecting pipe is provided with a retaining ring inside the testing tank. At least two sets of retaining rings are provided above and below the tank, and the cross-section of the retaining ring is inclined upward.

8. A simple device for detecting the purity of lithium carbonate according to claim 1, characterized in that: The connecting pipe and the pressure pipe are all equipped with sealing rings at the connection points with the first sealing cover and the second sealing cover.

9. A simple device for detecting the purity of lithium carbonate according to claim 1, characterized in that: The sample holder is circular, and the thickness of the outer ring at the top of the sample holder is greater than the thickness of the center, forming a slope.

10. A simple device for detecting the purity of lithium carbonate according to claim 1, characterized in that: A magnet is provided at the bottom of the sample holder, an electromagnet with changeable polarity is provided at the bottom of the detection tank, and a limit plate is provided at the bottom of the connecting rod below the sample holder.

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