A collection device for powdered magnetic material

Abstract

The utility model relates to the technical field of magnetic material collection, and specifically discloses a device for collecting powdered magnetic material, comprising a dispersion chamber, a drive unit and a magnetic unit. An air inlet is provided on the dispersion chamber, and the drive unit comprises a blowing member connected to the air inlet of the dispersion chamber, which can blow out gas, and use the gas to blow away the powder in the dispersion chamber to achieve dispersion of the powder. The magnetic unit is partially or completely located in the dispersion chamber, has magnetism, and can absorb the magnetic material in the powder. Since the powder is dispersed by the gas, the powder in the dispersion chamber is repeatedly blown, so that most of the powder can be connected to the magnetic unit, thereby greatly improving the adsorption degree of the magnetic material, and improving the subsequent detection accuracy of the magnetic material.

Description

Technical Field

[0001] The utility model relates to the technical field of magnetic material collection, in particular to a device for collecting powdered magnetic material. Background Art

[0002] Lithium batteries are widely used in 3C electronic products, power vehicles and other industries due to their high energy, environmental protection, high cycle life, and long storage life. With the rapid development of the lithium battery industry, customers have higher and higher requirements for battery performance and safety. Magnetic metal foreign matter (Fe, Cr, Ni, Zn, etc.) is extremely harmful to lithium batteries. If the content of magnetic substances in the battery is too high, it will cause internal short circuits and self-discharge of the battery, causing safety accidents and seriously affecting the safety performance of the battery. Therefore, the method of accurately determining the content of magnetic substances in battery materials is of great significance to the lithium battery industry. Among them, the more important one is how to accurately screen out the magnetic substances in the battery powder.

[0003] In the prior art, in order to detect the magnetic substance in the battery powder, it is usually carried out by two methods, wet method and dry method. The wet method refers to mixing the powder containing the magnetic substance with a solvent, and then using a magnetic rod wrapped by a polymer to stir it, using the magnetic rod to adsorb the magnetic substance, and then acid digesting the magnetic substance. The solution after digestion is subjected to element quantitative analysis to obtain the final content of the magnetic substance. However, the powder needs to be mixed with a solvent, and the powder sample cannot be recycled and reused, and waste liquid will be generated, resulting in resource waste and environmental pollution. At the same time, after adding the solvent, the slurry contaminated on the magnetic rod is not easy to wash off, and the magnetic particles are easily taken away when the slurry agglomerated on the magnetic rod is washed, resulting in result deviation; while the dry method refers to using a magnetic rod wrapped by a polymer to stir in a container containing powder, using the magnetic rod to directly adsorb the magnetic substance, and then washing the magnetic particles on the magnetic rod. However, compared with wet adsorption, the powder has no dispersion means, which is easy to cause incomplete adsorption. When the powder is not fully dispersed, its flow friction may also wash away the adsorbed magnetic particles, resulting in deviation in the test results. Summary of the invention

[0004] The utility model is made in consideration of the above-mentioned problems. The purpose of the utility model is to provide a device for collecting powdered magnetic materials. The powder can be dispersed in a dispersion chamber by using gas, and the magnetic material in the powder can be adsorbed by a magnetic rod to achieve dry adsorption. At the same time, since the powder is thoroughly dispersed and the magnetic material is completely adsorbed, the accuracy of the test results is improved.

[0005] In order to achieve the above object, the utility model provides a device for collecting powdered magnetic material, comprising:

[0006] A dispersion chamber, wherein an air inlet is provided on the dispersion chamber;

[0007] A driving unit, the driving unit comprising a blowing member, the blowing member being connected to an air inlet of the dispersion chamber and used for blowing away the powder in the dispersion chamber;

[0008] A magnetic unit, which is partially or completely located in the dispersion chamber and is used to absorb magnetic substances in the powder;

[0009] It also includes a powder storage unit, which is located in the dispersion chamber and is used to store the powder;

[0010] The powder storage unit comprises an arc-shaped plate, one end of which is connected to the inner wall of the dispersion chamber and is surrounded by the inner wall of the dispersion chamber to form a powder storage tank for placing the powder;

[0011] The dispersion chamber includes a bottom plate and a first side wall and a second side wall connected to both ends of the bottom plate, one end of the arc plate is connected to the inner side of the first side wall, and the arc plate, the bottom plate and the second side wall together form a dispersion channel, and a discharge port is provided at the bottom of the arc plate, and the discharge port is used to connect the powder storage tank with the dispersion channel.

[0012] According to the above-mentioned device for collecting powdered magnetic material, the air inlet is arranged on the first side wall below the arc plate, the blowing member is configured as an air blowing gun, the air blowing gun is fixed on the outside of the air inlet, and the air outlet of the air blowing gun faces the distribution channel.

[0013] According to the above-mentioned device for collecting powdered magnetic material, the magnetic unit includes a magnetic rod, which is rotatably connected to the top of the second side wall and is arranged in the dispersion chamber along the vertical direction, and the outlet of the dispersion channel faces the magnetic rod.

[0014] According to the above-mentioned device for collecting powdered magnetic material, a discharge port is provided at the bottom of the dispersion chamber, and the discharge port is located directly below the feed opening.

[0015] According to the above-mentioned device for collecting powdered magnetic material, a feed port is provided on one side of the top of the dispersion chamber, and the powder storage tank is located directly below the feed port.

[0016] According to the above-mentioned device for collecting powdered magnetic materials, it also includes a powder reflux unit, which includes a reflux bin and a baffle. The reflux bin is detachably installed on the feed port, and multiple baffles are arranged in the reflux bin at an angle downward and alternately on the two inner walls of the reflux bin.

[0017] According to the above-mentioned device for collecting powdered magnetic material, the powder reflux unit further includes a filter, and the filter is installed at the opening at the top of the reflux bin.

[0018] The utility model has the following beneficial effects:

[0019] 1. The powder in the dispersion chamber can be blown away by an air blow gun to prevent it from gathering together. Then, the magnetic substance in the dispersed powder can be adsorbed by a magnetic rod in the dispersion chamber to achieve dry adsorption of the magnetic substance and prevent the magnetic rod from adhering to the solvent. At the same time, since the powder is completely dispersed, the adsorption of the magnetic substance is more complete, thereby ensuring the measurement accuracy of the magnetic substance content;

[0020] 2. The arc plate and the first side wall of the dispersion chamber are combined to form a powder storage tank for placing powder, and the arc plate and the second side wall are combined to form a dispersing channel. The powder in the powder storage tank falls into the dispersing channel, and the powder can be blown away by the air gun and moved along the dispersing channel. The magnetic rod is arranged at the outlet of the dispersing channel, so that the magnetic rod can fully contact with the dispersed powder, thereby improving the completeness of adsorption;

[0021] 3. A detachable reflux bin is provided above the feed port, and the baffle in the reflux bin can prevent the powder from escaping and polluting the air environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic diagram of the appearance of a dispersion chamber of an embodiment;

[0023] Figure 2 It is a schematic diagram of the overall internal structure of the embodiment.

[0024] In the figure:

[0025] 1. Dispersion chamber; 11. Bottom plate; 12. First side wall; 13. Second side wall; 14. Discharge port; 15. Air inlet; 16. Feed port; 2. Blowing piece; 3. Magnetic rod; 4. Curved plate; 41. Discharge port; 42. Dispersion channel; 43. Powder storage tank; 5. Powder reflux unit; 51. Reflux bin; 52. Baffle; 521. Barrier strip; 53. Filter. DETAILED DESCRIPTION

[0026] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0027] like Figure 1-2 As shown, a device for collecting powdered magnetic material includes a dispersion chamber 1, a driving unit and a magnetic unit.

[0028] Specifically, an air inlet 15 is provided on the dispersion chamber 1, and the driving unit includes a blowing member 2, which is connected to the air inlet 15 of the dispersion chamber 1 and can blow out gas. The gas is used to blow away the powder in the dispersion chamber 1 to achieve dispersion of the powder. The magnetic unit is partially or completely located in the dispersion chamber 1, and it has magnetism and can adsorb magnetic substances in the powder. Since the powder is dispersed by the gas, repeated blowing of the powder in the dispersion chamber 1 can make most of the powder connect with the magnetic unit, thereby greatly improving the adsorption degree of the magnetic substance, and can improve the subsequent detection accuracy of the magnetic substance.

[0029] In this embodiment, the powder magnetic material collecting device is used to collect the magnetic material in the powder by adsorption, and judge the content of the magnetic material in the powder according to the collected amount, and the method for measuring the content of the magnetic material in the powder is:

[0030] Weigh about 500g of the powder to be tested and add it into the dispersion chamber 1, and put the magnetic unit into the dispersion chamber 1, and set the rotation speed of the magnetic unit to 5-10r / min;

[0031] The blowing part 2 blows out compressed air or inert gas to disperse the sample. The compressed air or inert gas should be pre-filtered before being input into the dispersion chamber 1 to ensure that it will not contaminate the powder and ensure the accuracy of the test. The dispersion time is set to 10-50min and the blowing pressure is adjusted to 0.5-2MPa.

[0032] After dispersing is stopped, the sample powder is recovered from the dispersing chamber 1, and the residual sample powder on the magnetic unit is purged and cleaned by the blowing member 2;

[0033] The magnetic unit is removed and residual sample powder is recovered therefrom, and the magnetic unit is placed in a digestion tube filled with mixed acid for digestion, and the volume is fixed after digestion to obtain a sample solution;

[0034] The sample solution is quantified using an inductively coupled plasma spectrometer or an inductively coupled plasma mass spectrometer to obtain the test result of the magnetic substance content of the sample powder.

[0035] In the present application, a blowing-type dispersion method is adopted, which can not only achieve the dispersion of powder, but also prevent the magnetic unit from being contaminated by solvents and other substances, thereby effectively improving the detection accuracy.

[0036] In order to store the powder, a powder storage unit is also included. The powder storage unit is located in the dispersion chamber 1 and is used to place the powder. That is, when adding materials, the materials can be directly added to the powder storage unit.

[0037] Specifically, the powder storage unit includes an arc-shaped plate 4, one end of which is connected to the inner wall of the dispersion chamber 1, and is combined with the inner wall of the dispersion chamber 1 to form a powder storage tank 43 for placing the powder. In order to add material to the powder storage tank 43, a feed port 16 is provided on one side of the top of the dispersion chamber 1. The powder storage tank 43 is located directly below the feed port 16. When adding material is needed, material can be added directly through the feed port 16.

[0038] In this embodiment, in order to improve the powder dispersion effect, a discharge port 41 is selected to be provided at the bottom of the arc plate 4. After opening the discharge port 41, the powder in the powder storage tank 43 can fall out. During the falling process, the blowing member 2 is turned on to blow away the powder in the falling process. Of course, most of the powder is blown to the upper part of the dispersion chamber 1, and then falls into the powder storage tank 43, and then performs a reciprocating cycle motion.

[0039] In this embodiment, a control valve may be provided in the discharge port 41 to control whether to discharge the material.

[0040] Of course, in addition to the above-mentioned method, the powder in the powder storage tank 43 can also be directly blown away by the blowing member 2, which should not exceed the scope of the present application.

[0041] Specifically, the dispersion chamber 1 includes a bottom plate 11 and a first side wall 12 and a second side wall 13 connected to both ends of the bottom plate 11 , wherein the first side wall 12 is arranged in a vertical direction, and the second side wall 13 is in an arc shape as a whole and is adapted to the arc plate 4 .

[0042] One end of the arc plate 4 is connected to the inner side of the first side wall 12, and the arc plate 4, the bottom plate 11 and the second side wall 13 together form a distribution channel 42. The discharge port 41 can be used to connect the powder storage tank 43 with the distribution channel 42. The distribution channel 42 can provide a guide for the flow of powder. In this embodiment, the distribution channel 42 is inclined upward and toward one side of the powder storage tank 43, which is beneficial to guiding the flow of powder and facilitating powder circulation.

[0043] Specifically, the air inlet 15 is arranged on the first side wall 12 below the arc plate 4, and the blowing member 2 is set as an air blow gun, which is fixed on the outside of the air inlet 15, and the air outlet of the air blow gun faces the distribution channel 42, wherein the gas blown out by the air blow gun is compressed air or inert gas, which should be pre-filtered before being blown into the dispersion chamber 1. Of course, in order to further avoid environmental pollution resulting in low detection accuracy, before adding powder, the dispersion chamber 1 can be cleaned by the gas blown out by the air blow gun. When the discharge port 41 is opened, the air blow gun can blow out gas to blow the powder along the distribution channel 42.

[0044] In order to improve the adsorption effect, the magnetic unit includes a magnetic rod 3. In the present embodiment, the magnetic rod 3 is entirely located in the dispersion chamber 1. Of course, one end thereof may also be located in the dispersion chamber 1 to achieve the same effect. The magnetic rod 3 is rotatably connected to the top of the second side wall 13 and is arranged in the dispersion chamber 1 along the vertical direction. The outlet of the dispersion channel 42 faces the magnetic rod 3, that is, most of the powder ejected from the dispersion channel 42 must pass through the magnetic rod 3, which can greatly improve the adsorption efficiency. Moreover, since the magnetic rod 3 itself is rotating, it can ensure that each part of the magnetic rod 3 can adsorb the magnetic material.

[0045] In this embodiment, the magnetic rod 3 is coated with a polymer that has been washed by mixed acid boiling, which can effectively prevent the magnetic rod 3 from carrying magnetic substances and improve the detection accuracy.

[0046] In order to prevent the powder from flying out of the feed port 16 to pollute the environment and bring out magnetic materials to cause low measurement accuracy, a powder reflux unit 5 is also included. The powder reflux unit 5 includes a reflux bin 51 and a baffle 52 located in the reflux bin 51. The reflux bin 51 is detachably installed on the feed port 16. When feeding is required, the reflux bin 51 can be removed first and then installed during subsequent use. Multiple baffles 52 are arranged up and down in the reflux bin 51, and are alternately arranged on the two inner walls of the reflux bin 51. The alternating arrangement forms a curved gas exhaust channel, which is convenient for gas exhaust to form a gas circulation. At the same time, due to the existence of the inclined baffle 52, the powder is not easy to fly out of the channel. If the powder falls on the inclined baffle 52, it will move downward along the baffle 52 and finally fall into the powder storage tank 43.

[0047] In order to enhance the barrier effect of the baffle 52 , a plurality of barrier strips 521 are provided below the baffle 52 to further block the movement of the powder.

[0048] In order to ensure that the powder does not enter the air and pollute the environment, the powder reflux unit 5 also includes a filter 53, which is installed at the opening on the top of the reflux bin 51. If a small amount of powder moves to the opening, it will all be blocked by the filter 53 to avoid polluting the environment.

[0049] In order to facilitate unloading, a unloading port 14 is provided at the bottom of the dispersion bin, and the unloading port 14 is located directly below the feed port 41. After the adsorption is completed, the air blower is closed and the unloading port 14 is opened, and the sample powder will be discharged through the unloading port 14, which is convenient for unloading operation.

[0050] In this embodiment, a device for collecting powdered magnetic material can not only be used in the detection of the magnetic material content in battery powder, but also can be used in the metallurgical industry, electronic waste recycling industry, mineral processing, chemical and pharmaceutical industry, food processing industry, scientific research laboratories, environmental treatment industry and other fields. The collection device can be used to separate magnetic particles and non-magnetic particles, which helps to improve product quality and reduce magnetic pollution.

[0051] The technical solution of the utility model is described in detail above in conjunction with the accompanying drawings, and the described embodiments are used to help understand the idea of ​​the utility model. The specific embodiments described herein are merely examples of the spirit of the utility model. A person skilled in the art of the utility model may make various modifications or supplements to the described specific embodiments or replace them in a similar manner, but this will not deviate from the spirit of the utility model or exceed the scope defined by the attached claims.

[0052] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0053] In addition, in the present invention, the descriptions of "first", "second", "one", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0054] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0055] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

Claims

1. A device for collecting powdered magnetic material, characterized in that: include: A dispersion chamber, wherein an air inlet is provided on the dispersion chamber; A driving unit, the driving unit comprising a blowing member, the blowing member being connected to an air inlet of the dispersion chamber and used for blowing away the powder in the dispersion chamber; A magnetic unit, which is partially or completely located in the dispersion chamber and is used to absorb magnetic substances in the powder; It also includes a powder storage unit, which is located in the dispersion chamber and is used to store the powder; The powder storage unit comprises an arc-shaped plate, one end of which is connected to the inner wall of the dispersion chamber and is surrounded by the inner wall of the dispersion chamber to form a powder storage tank for placing the powder; The dispersion chamber includes a bottom plate and a first side wall and a second side wall connected to both ends of the bottom plate, one end of the arc plate is connected to the inner side of the first side wall, and the arc plate, the bottom plate and the second side wall together form a dispersion channel, and a discharge port is provided at the bottom of the arc plate, and the discharge port is used to connect the powder storage tank with the dispersion channel.

2. A device for collecting powdered magnetic material according to claim 1, characterized in that: The air inlet is arranged on the first side wall below the arc-shaped plate, the blowing member is arranged as an air blowing gun, the air blowing gun is fixed on the outside of the air inlet, and the air outlet of the air blowing gun faces the dispersing channel.

3. A device for collecting powdered magnetic material according to claim 1, characterized in that: The magnetic unit includes a magnetic bar, which is rotatably connected to the top of the second side wall and is arranged in the dispersion chamber along a vertical direction, and the outlet of the dispersion channel faces the magnetic bar.

4. A device for collecting powdered magnetic material according to claim 1, characterized in that: The bottom of the dispersion chamber is provided with a discharge port, and the discharge port is located directly below the feed opening.

5. The device for collecting powdered magnetic material according to claim 1, characterized in that: A feeding port is arranged on one side of the top of the dispersion chamber, and the powder storage tank is located directly below the feeding port.

6. A device for collecting powdered magnetic material according to claim 5, characterized in that: It also includes a powder reflux unit, which includes a reflux bin and a baffle. The reflux bin is detachably mounted on the feed port, and a plurality of baffles are arranged in the reflux bin at an angle downward and alternately on the two inner walls of the reflux bin.

7. A device for collecting powdered magnetic material according to claim 6, characterized in that: The powder reflux unit further comprises a filter, which is installed at the opening at the top of the reflux bin.

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