demagnetizer

Abstract

This utility model provides a demagnetizer. The demagnetizer includes a demagnetizing mechanism, an air inlet mechanism, and an air outlet mechanism. The demagnetizing mechanism includes a demagnetizing pipe and a demagnetizing body. The demagnetizing pipe passes through the demagnetizing body and includes a feed pipe section and a discharge pipe section, which are located on opposite sides of the demagnetizing body. The air inlet mechanism is connected to the feed pipe section and is adapted to be connected to a protective gas source. The air outlet mechanism is connected to the discharge pipe section. This utility model solves the problem of condensation easily forming on the inner wall of the demagnetizer in the prior art.

Description

Technical Field

[0001] This utility model relates to the field of magnetic material processing technology, and more specifically, to a demagnetizer. Background Technology

[0002] In the production of positive and negative electrode battery materials, demagnetizers are widely used as an important piece of production equipment to remove magnetic metallic foreign objects from powder materials, thereby reducing the safety risks of poor battery voltage, short circuits, and even fires. During actual operation, the magnetic induction of the demagnetizer generates a large amount of heat. To ensure the demagnetization effect, cooling water is usually used to cool the inner walls of the demagnetizer.

[0003] However, when exposed to high humidity air, condensation easily forms on the low-temperature inner wall of the demagnetizer, causing the moisture content of the powder material passing through the demagnetizer to rise, thus exceeding the specified moisture standard and seriously affecting the quality of the powder material.

[0004] In other words, existing demagnetizers have the problem of condensation easily forming on their inner walls.

[0005] It should be noted that the information provided in this section is merely background information relevant to this disclosure and is not necessarily prior art. Utility Model Content

[0006] The main purpose of this invention is to provide a demagnetizer to solve the problem of condensation on the inner wall of the demagnetizer in the prior art.

[0007] To achieve the above objectives, this utility model provides a demagnetizer, which includes: a demagnetizing mechanism, comprising a demagnetizing pipe and a demagnetizing body, the demagnetizing pipe passing through the demagnetizing body and including a feed pipe section and a discharge pipe section, the feed pipe section and the discharge pipe section being located on both sides of the demagnetizing body respectively; an air inlet mechanism, the air inlet mechanism being connected to the feed pipe section and adapted to be connected to a protective gas source; and an air outlet mechanism, the air outlet mechanism being connected to the discharge pipe section.

[0008] Furthermore, the demagnetizing mechanism also includes a slag discharge pipe, which is connected to the discharge pipe section, and the connection between the slag discharge pipe and the discharge pipe section is at least partially located upstream of the connection between the air outlet mechanism and the discharge pipe section; the slag discharge pipe and the air outlet mechanism are arranged at a circumferential interval of 20° to 180° in the demagnetizing pipeline.

[0009] Furthermore, the end of the slag discharge pipe away from the demagnetizing pipe includes a slag discharge port, which is set towards the discharge end of the discharge pipe section. The air outlet mechanism includes a breather, which is set towards the feed end of the feed pipe section.

[0010] Furthermore, the demagnetizer also includes a tilting plate, which is movably disposed at the connection between the slag discharge pipe and the demagnetizing pipe; the tilting plate includes a first position that cuts off the connection between the slag discharge pipe and the demagnetizing pipe; the tilting plate includes a second position that opens the connection between the slag discharge pipe and the demagnetizing pipe.

[0011] Furthermore, the top of the demagnetizing pipe includes a feed inlet, and the bottom of the demagnetizing pipe includes a discharge outlet. When the flipping plate is in the second position, the pipe cavity of the demagnetizing pipe is divided into a first cavity and a second cavity that are isolated from each other by the flipping plate. The second cavity is closer to the discharge outlet than the first cavity, and the air outlet mechanism is connected to the second cavity.

[0012] Furthermore, the flip plate is flip-mounted at the connection between the slag discharge pipe and the demagnetization pipe.

[0013] Furthermore, the exhaust mechanism extends upward at an angle relative to the demagnetizing pipe, with the angle between the exhaust mechanism and the demagnetizing pipe being between 5° and 85°.

[0014] Furthermore, the intake mechanism extends upward at an angle relative to the demagnetizing pipe, with the angle between the intake mechanism and the demagnetizing pipe being between 5° and 85°.

[0015] Furthermore, the air outlet mechanism includes an air outlet pipe, an air outlet valve, and a filter element. The air outlet valve is installed on the air outlet pipe, the filter element is installed inside the air outlet pipe, and the air outlet valve is located upstream of the filter element.

[0016] Furthermore, the demagnetizing pipeline also includes an intermediate pipe section that penetrates the demagnetizing body. The end of the feed pipe section away from the intermediate pipe section includes a feed inlet, and the end of the discharge pipe section away from the intermediate pipe section includes a discharge outlet. Furthermore, the demagnetizing pipeline also includes a tubular connector, with the intermediate pipe section and the discharge pipe section spaced apart and sealed together by the tubular connector.

[0017] The demagnetizer using the technical solution of this utility model includes a demagnetizing mechanism, an air inlet mechanism, and an air outlet mechanism. The demagnetizing mechanism includes a demagnetizing pipe and a demagnetizing body. The demagnetizing pipe passes through the demagnetizing body and includes an inlet pipe section and an outlet pipe section, which are located on both sides of the demagnetizing body. The air inlet mechanism is connected to the inlet pipe section and is adapted to be connected to a protective gas source. The air outlet mechanism is connected to the outlet pipe section.

[0018] To prevent external humid air from entering the demagnetizing mechanism, this application incorporates an air inlet mechanism and an air outlet mechanism on the feed and discharge sections of the demagnetizing pipeline, respectively. The air inlet mechanism injects protective gas into the demagnetizing pipeline, and the protective gas flow is discharged through the air outlet mechanism after passing through the pipeline, effectively preventing the intrusion of external humid air. Simultaneously, this method creates a dry environment inside the demagnetizing mechanism, reducing condensation on the inner wall caused by cooling water, thereby lowering the moisture content of the powder material and improving its quality. Attached Figure Description

[0019] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0020] Figure 1 A schematic diagram of the structure of a demagnetizer according to an optional embodiment of the present invention is shown;

[0021] Figure 2 A schematic diagram of the air outlet mechanism of a demagnetizer according to an optional embodiment of the present invention is shown;

[0022] Figure 3 A schematic diagram of the air intake mechanism of a demagnetizer according to an optional embodiment of the present invention is shown.

[0023] The above figures include the following reference numerals:

[0024] 10. Demagnetizing mechanism; 111. Feed pipe section; 112. Intermediate pipe section; 113. Discharge pipe section; 114. Tubular connector; 115. Flange; 116. Feed inlet; 117. Discharge outlet; 12. Demagnetizing body; 13. Slag discharge pipe; 131. Slag discharge port; 20. Air intake mechanism; 21. Air intake pipe; 22. Air inlet; 30. Air outlet mechanism; 31. Air outlet pipe; 311. Breathing port; 32. Air outlet valve; 33. Filter element; 40. Tilting plate. Detailed Implementation

[0025] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0026] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0027] In this utility model, unless otherwise stated, directional terms such as "upper," "lower," "top," and "bottom" are generally used in relation to the direction shown in the accompanying drawings, or in relation to the vertical, perpendicular, or gravitational direction of the component itself; similarly, for ease of understanding and description, "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0028] To address the problem of condensation easily forming on the inner wall of demagnetizers in existing technologies, this invention provides a demagnetizer.

[0029] like Figures 1 to 3As shown, the demagnetizer includes a demagnetizing mechanism 10, an air inlet mechanism 20, and an air outlet mechanism 30. The demagnetizing mechanism 10 includes a demagnetizing pipe and a demagnetizing body 12. The demagnetizing pipe passes through the demagnetizing body 12 and includes an inlet pipe section 111 and an outlet pipe section 113, which are located on both sides of the demagnetizing body 12, respectively. The air inlet mechanism 20 is connected to the inlet pipe section 111 and is adapted to be connected to a protective gas source. The air outlet mechanism 30 is connected to the outlet pipe section 113.

[0030] To prevent external humid air from entering the demagnetizing unit 10, this application provides an air inlet mechanism 20 and an air outlet mechanism 30 on the feed section 111 and discharge section 113 of the demagnetizing pipe, respectively. The air inlet mechanism 20 injects protective gas into the demagnetizing pipe, and the protective gas flow is discharged through the air outlet mechanism 30 after passing through the demagnetizing pipe, effectively preventing the intrusion of external humid air. Simultaneously, this method creates a dry environment inside the demagnetizing unit 10, reducing condensation on the inner wall of the demagnetizing unit 10 caused by cooling water, thereby reducing the moisture content of the powder material and improving its quality.

[0031] Since the positions of the air inlet mechanism 20 and the air outlet mechanism 30 determine the flow path of the protective gas, the air inlet mechanism 20 and the air outlet mechanism 30 can be set at appropriate positions according to the actual anti-condensation requirements. Taking this application as an example, the air inlet mechanism 20 and the air outlet mechanism 30 are set at both ends of the demagnetizing pipe, and both are located outside the demagnetizing body 12. The axial distance between the air inlet mechanism 20 and the air outlet mechanism 30 and the demagnetizing body 12 is not further limited and can be adjusted according to requirements.

[0032] The demagnetizing pipeline also includes an intermediate pipe section 112, which penetrates the demagnetizing body 12. The end of the feed pipe section 111 furthest from the intermediate pipe section 112 includes a feed inlet 116, and the end of the discharge pipe section 113 furthest from the intermediate pipe section 112 includes a discharge outlet 117. In other words, the demagnetizing pipeline in this embodiment is a through-type pipeline composed of the feed pipe section 111, the intermediate pipe section 112, and the discharge pipe section 113. During the demagnetizing process, the powder material enters the demagnetizing pipeline through the feed inlet 116 on the feed pipe section 111, passes through the intermediate pipe section 112 penetrating the demagnetizing body 12, and is then discharged through the discharge outlet 117 of the discharge pipe section 113. Simultaneously, protective gas enters the feed pipe section 111 through the air inlet mechanism 20 and is then discharged through the air outlet mechanism 30 on the discharge pipe section 113. Because of the protective gas introduced into the demagnetizing pipe, the powder material can be kept in a dry environment, which effectively prevents the powder material from coming into contact with humid air, greatly improving the product yield and quality.

[0033] like Figure 1As shown, the demagnetizing pipeline also includes a tubular connector 114. The intermediate pipe section 112 and the discharge pipe section 113 are spaced apart and sealed together by the tubular connector 114. That is, there is a certain distance between the intermediate pipe section 112 and the discharge pipe section 113 of the demagnetizing pipeline, and the tubular connector 114 is fitted onto the adjacent ends of the intermediate pipe section 112 and the discharge pipe section 113, maintaining a seal between them. By adjusting the components of the demagnetizing pipeline, it can be adapted to production lines of different sizes, solving the problems of high-flow or long-distance conveying.

[0034] Furthermore, by using tubular connectors 114 made of different materials, different temperature and pressure environments can be accommodated. For example, the tubular connector 114 can be a flexible connector. When the flexible connector is fitted onto the end adjacent to the intermediate pipe section 112 and the discharge pipe section 113, it can effectively eliminate the vibration transmission of the demagnetizing body 12 and reduce the vibration transmission of the demagnetizing body 12 to the discharge pipe section 113 and its slag discharge pipe 13 and air outlet mechanism 30. Therefore, by setting a flexible connector, not only can the sealing of the connection between the intermediate pipe section 112 and the discharge pipe section 113 be guaranteed, but it can also achieve a vibration reduction effect. Optionally, in some embodiments, the tubular connector 114 is a flexible hose.

[0035] exist Figure 1 In the illustrated embodiment, the feed pipe section 111 and the intermediate pipe section 112 are connected by a flange 115. This means that the feed pipe section 111 can be detached from the intermediate pipe section 112, thus adapting to different feed pipe sections. Of course, in other embodiments, other connection methods can be used, such as pipe fittings or a sleeve connection between two pipes, as long as a stable and sealed connection between the feed pipe section 111 and the intermediate pipe section 112 can be ensured.

[0036] It should be noted that the protective gas is a dry gas. The dew point of the dry gas used as the protective gas is less than or equal to -30℃, meaning that the aforementioned dry gas will only condense (precipitate liquid) at temperatures less than or equal to -30℃. Specifically, the moisture content in the aforementioned dry gas is less than 30 parts per million by volume (ppmV, dimensionless). The protective gas can be one or more gases such as dry nitrogen, dry oxygen, and dry air. The dry gas ensures a dry environment inside the demagnetizing pipeline, preventing condensation from forming on the inner wall of the pipeline, thereby significantly improving the production quality of powder materials and reducing the product defect rate caused by excessive moisture.

[0037] Specifically, the supply rate of the protective gas is limited to between 1 liter per minute and 1000 liters per minute. The supply rate of the protective gas can be adjusted according to the characteristics of the powder material and the production scale.

[0038] In such Figure 1 In the illustrated embodiment, the air inlet mechanism 20 and the air outlet mechanism 30 extend upwards at an angle between 5° and 85° relative to the demagnetizing pipe. By tilting the air inlet mechanism 20, it prevents powder material entering from the feed pipe section 111 from clogging it, and also better guides the flow of the protective gas. The tilt angle improves the airflow distribution of the protective gas, preventing direct airflow from abrading the inner wall of the demagnetizing pipe. Similarly, the tilted air outlet mechanism 30 effectively discharges the protective gas by utilizing its upward path. In other words, the tilted arrangement of the air inlet mechanism 20 and the air outlet mechanism 30 optimizes the airflow path of the protective gas, improves its utilization rate, and reduces the maintenance cost of the demagnetizer.

[0039] For example, in some embodiments, the air inlet mechanism 20 extends upward at an angle α relative to the demagnetizing pipe, with the angle α between 5° and 85° between the two mechanisms; the air outlet mechanism 30 extends upward at an angle α relative to the demagnetizing pipe, with the angle α between 5° and 85° between the two mechanisms. The angle α or angle α can be 5°, 10°, 15°, 20°, 30°, 40°, 50°, 60°, 70°, 75°, 80°, 85°, or within any two of the above values. Adjusting the tilt angle can adapt to the characteristics of different powder materials and production needs, thereby managing airflow in different scenarios. Of course, considering that the air inlet mechanism 20 and the air outlet mechanism 30 are mainly used for the entry or exit of protective gas, if the arrangement of the air inlet mechanism 20 and the air outlet mechanism 30 is not within the above angle range, but still allows for the smooth flow of protective gas, it is also a reasonable choice.

[0040] Preferably, the air intake mechanism 20 and the air outlet mechanism 30 extend upward at an angle relative to the demagnetizing pipe and the angle between them is between 10° and 80°.

[0041] like Figure 1 and Figure 3 As shown, the air intake mechanism 20 includes at least one air intake pipe 21 and a corresponding air intake port 22. The protective gas source is connected to the air intake pipe 21, and the air intake pipe 21 can be a diffuser type, that is, the diameter of the air intake pipe 21 gradually increases towards the demagnetizing pipe. After the protective gas enters the air intake pipe 21, the airflow gradually diffuses, which not only slows down the flow velocity of the protective gas when it first enters the demagnetizing pipe, but also disperses the direction of the protective gas entering the demagnetizing pipe, thereby preventing the high-speed protective gas from directly impacting the inner wall of the demagnetizing pipe, preventing cavitation on the inner wall of the demagnetizing pipe, and extending the service life of the demagnetizing pipe.

[0042] Alternatively, the intake pipe 21 can also be spiral or vortex type. All of the above different types of intake pipes 21 can achieve the effects of slowing down the protective airflow velocity and dispersing the protective airflow.

[0043] exist Figure 1 In the illustrated embodiment, the demagnetizing mechanism 10 further includes a slag discharge pipe 13, which is connected to the discharge pipe section 113. The connection between the slag discharge pipe 13 and the discharge pipe section 113 is at least partially located upstream of the connection between the air venting mechanism 30 and the discharge pipe section 113. Along the flow direction of the powder material, the direction near the feed end of the feed pipe section 111 is upstream, and the direction near the discharge end of the discharge pipe section 113 is downstream.

[0044] It should be noted that during the demagnetization process, the powder material flows from the feed section 111 of the demagnetization pipeline to the discharge section 113. The demagnetization mechanism 10 uses magnetic induction to adsorb the magnetic substances in the powder material onto the inner wall of the demagnetization pipeline. During the slag discharge process, the magnetic substances on the inner wall of the demagnetization pipeline are discharged from the slag discharge pipe 13 of the discharge section 113.

[0045] Specifically, the end of the slag discharge pipe 13 away from the demagnetizing pipe includes a slag discharge port 131, which is set toward the discharge end of the discharge pipe section 113. The air outlet mechanism 30 includes a breather 311, which is set toward the feed end of the feed pipe section 111.

[0046] In other words, during the demagnetization process, the protective gas flows from the air inlet mechanism 20 of the feed pipe section 111 to the vent 311 of the discharge pipe section 113, which faces the feed end of the feed pipe section 111. The powder material and the protective gas flow in the same direction in part of the demagnetization pipe, ensuring the dryness of the demagnetization mechanism 10 while preventing backflow of the powder material. The slag discharge pipe 13 is located upstream of the air outlet mechanism 30 on the demagnetization pipe and faces the discharge end of the discharge pipe section 113. This ensures that the protective gas enters the slag discharge pipe 13 first during slag discharge, meaning that both the magnetic material and the protective gas can be discharged from the slag discharge pipe 13 during the slag discharge process. This arrangement ensures that the protective gas is discharged from the slag discharge port 131 during the slag discharge process of the demagnetizer, preventing outside air from entering the demagnetizer through the slag discharge port 131, thereby preventing condensation on the inner wall of the demagnetizer and the resulting increase in the moisture content of the powder material.

[0047] In some alternative embodiments, the demagnetizing mechanism 10 can be adapted to demagnetizers of different sizes by increasing the length of the slag discharge pipe 13 or changing its degree of curvature, thereby solving potential clogging problems during the slag discharge process.

[0048] Considering that both the slag discharge pipe 13 and the air outlet mechanism 30 are connected to the demagnetizing pipeline, if the connection between the slag discharge pipe 13 and the demagnetizing pipeline is not controlled, the protective gas may accidentally leak out of the slag discharge pipe 13 during the demagnetizing process. Additionally, external humid air may easily enter the demagnetizing pipeline through the slag discharge pipe 13. Of course, installing a switch door at the end of the slag discharge pipe 13 can also play a role to some extent. The technical solution adopted in this application implements on / off control at the connection point between the slag discharge pipe 13 and the demagnetizing pipeline.

[0049] like Figure 1 As shown, the demagnetizer also includes a tilting plate 40, which is movably disposed at the connection between the slag discharge pipe 13 and the demagnetizing pipe. The tilting plate 40 has a first position that cuts off the connection between the slag discharge pipe 13 and the demagnetizing pipe, and a second position that opens the connection between the slag discharge pipe 13 and the demagnetizing pipe. By setting the tilting plate 40, the connection between the slag discharge pipe 13 and the demagnetizing pipe can be flexibly switched. That is, by switching the position of the tilting plate 40, the slag discharge pipe 13 and the demagnetizing pipe can be connected during slag discharge and disconnected during demagnetization. This facilitates slag discharge while effectively preventing external humid air from entering the demagnetizing pipe during the slag discharge process, ensuring the stability of the internal environment of the demagnetizer.

[0050] Alternatively, the demagnetizer can use different types of drive methods to drive the movement of the flip plate 40, such as electric control or pneumatic control, to achieve automated operation and improve production efficiency.

[0051] like Figure 1 As shown, the top of the demagnetizing pipe includes an inlet 116, and the bottom of the demagnetizing pipe includes an outlet 117. When the flip plate 40 is in the second position, the pipe cavity of the demagnetizing pipe is divided into a first cavity and a second cavity that are isolated from each other by the flip plate 40. The second cavity is closer to the outlet 117 than the first cavity, and the air venting mechanism 30 is connected to the second cavity. The demagnetizing pipe includes an inlet 116 and an outlet 117. The inlet 116 is located at the inlet section 111 at the top of the demagnetizing pipe, and the outlet 117 is located at the outlet section 113 at the bottom of the demagnetizing pipe. Powder material can flow from the inlet 116 to the outlet 117. When the tilting plate 40 is in the second position, the demagnetizer is in the slag discharge process. At this time, the tilting plate 40 divides the pipe cavity of the demagnetizing pipe into a first cavity and a second cavity, so that the magnetic material and protective gas in the first cavity enter the slag discharge pipe 13, while blocking the two from entering the second cavity near the discharge port 117, thereby preventing the magnetic material or protective gas from entering the gas outlet mechanism 30 connected to the second cavity.

[0052] In some alternative embodiments, the tilting plate 40 is tiltably disposed at the connection between the slag discharge pipe 13 and the demagnetizing pipe. The tilting plate 40 can quickly switch between its first and second positions, reducing downtime and improving the working efficiency of the demagnetizer. In addition, by changing the shape and tilting range of the tilting plate 40, it can be adapted to the slag discharge requirements of different demagnetizing mechanisms 10.

[0053] In one specific embodiment, the flip plate 40 is a flip-able plate-shaped component. The plate-shaped component can switch between a first position and a second position by rotating a shaft. When the flip plate 40 is in the first position, it can block the connection between the slag discharge pipe 13 and the demagnetizing pipe. When the flip-able plate-shaped component avoids the connection between the slag discharge pipe 13 and the demagnetizing pipe and enters the demagnetizing pipe, the flip plate 40 is in the second position, which allows the magnetic material in the demagnetizing pipe to be discharged through the slag discharge pipe 13.

[0054] In some alternative embodiments, the slag discharge pipe 13 and the air outlet mechanism 30 are spaced 20° to 180° apart circumferentially in the demagnetizing pipe. By controlling the circumferential spacing between the slag discharge pipe 13 and the air outlet mechanism 30 on the outer wall of the demagnetizing pipe, the flip plate 40 can fully isolate the first cavity and the second cavity when in the second position, while ensuring that magnetic material and protective gas can enter the slag discharge pipe 13 from the first cavity during slag discharge, and preventing external humid air from entering the demagnetizing pipe.

[0055] Specifically, the slag discharge pipe 13 and the air outlet mechanism 30 can be spaced 20°, 30°, 50°, 80°, 100°, 120°, 140°, 160°, 170°, 180° or within any two of the above values ​​in the circumferential direction of the demagnetizing pipe.

[0056] Preferably, the slag discharge pipe 13 and the air outlet mechanism 30 are spaced 80° to 180° apart in the circumferential direction of the demagnetizing pipe.

[0057] like Figure 2 As shown, the venting mechanism 30 includes a venting pipe 31, a venting valve 32, and a filter element 33. The venting valve 32 is mounted on the venting pipe 31, and the filter element 33 is arranged around the inside of the venting pipe 31, with the venting valve 32 located upstream of the filter element 33. The venting mechanism 30 integrates the venting pipe 31, the venting valve 32, and the filter element 33. During demagnetization, the flip plate 40 is in the first position, and the venting valve 32 of the venting mechanism 30 is open. The protective gas from the demagnetizing pipeline passes sequentially through the venting valve 32 of the venting pipe 31 and the filter element 33, and is finally discharged to the outside of the demagnetizer from the breather 311 at the end of the venting pipe 31 furthest from the demagnetizing pipeline. In other words, when the protective gas is discharged from the venting mechanism 30, the escaping powder particles can be intercepted by the filter element 33, effectively preventing powder leakage.

[0058] Specifically, along the direction of protective gas discharge, the end of filter element 33 can also intercept the escaping powder material particles.

[0059] Optionally, the vent valve 32 can be a manual valve or an electrically controlled valve.

[0060] Optionally, the minimum pore size of filter element 33 is between 0.01 μm and 2 μm. By replacing filter elements 33 with different pore sizes, powder materials of different particle sizes can be accommodated, thereby overcoming the balance problem between filtration efficiency and air permeability.

[0061] Optionally, the filter element 33 can be annular, with its outer ring surface fitted and fixed to the inner wall of the outlet pipe 31. The annular filter element 33 can not only effectively intercept the escaping powder material, but also ensure the free flow of protective gas.

[0062] Optionally, the vent 311 of the exhaust pipe 31 can be configured with different types. For example, the vent 311 can be a direct exhaust port, which can quickly and directly discharge protective gas, simplifying the exhaust path and reducing maintenance costs. Alternatively, the vent 311 can be an automatic backflush port, which can periodically blow away accumulated dust on the filter element 33, extending the service life of the filter element 33, reducing downtime for cleaning, and further improving production efficiency.

[0063] As can be seen from the above description, the embodiments of this utility model achieve the following technical effects:

[0064] To prevent external humid air from entering the demagnetizing unit 10, this application provides an air inlet mechanism 20 and an air outlet mechanism 30 on the feed section 111 and discharge section 113 of the demagnetizing pipe, respectively. The air inlet mechanism 20 injects protective gas into the demagnetizing pipe, and the protective gas flow is discharged through the air outlet mechanism 30 after passing through the demagnetizing pipe, effectively preventing the intrusion of external humid air. Simultaneously, this method creates a dry environment inside the demagnetizing unit 10, reducing condensation on the inner wall of the demagnetizing unit 10 caused by cooling water, thereby reducing the moisture content of the powder material and improving its quality.

[0065] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0066] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0067] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0068] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A de-gaussing machine characterized by, The demagnetizer includes: A demagnetizing mechanism (10) is provided, comprising a demagnetizing pipe and a demagnetizing body (12). The demagnetizing pipe passes through the demagnetizing body (12) and includes an inlet pipe section (111) and an outlet pipe section (113). The inlet pipe section (111) and the outlet pipe section (113) are located on both sides of the demagnetizing body (12). An air intake mechanism (20) is connected to the feed pipe section (111) and is adapted to be connected to a protective gas source. An air outlet mechanism (30) is connected to the discharge pipe section (113).

2. The demagnetizer according to claim 1, characterized in that, The demagnetizing mechanism (10) further includes a slag discharge pipe (13), which is connected to the discharge pipe section (113), and the position where the slag discharge pipe (13) is connected to the discharge pipe section (113) is at least partially located upstream of the position where the air outlet mechanism (30) is connected to the discharge pipe section (113); The slag discharge pipe (13) and the gas outlet mechanism (30) are arranged at a circumferential distance of 20° to 180° from the demagnetizing pipe.

3. The demagnetizer according to claim 2, characterized in that, The end of the slag discharge pipe (13) away from the demagnetizing pipe includes a slag discharge port (131), which is disposed toward the discharge end of the discharge pipe section (113). The air outlet mechanism (30) includes a vent (311), which is disposed toward the feed end of the feed pipe section (111).

4. The demagnetizer according to claim 2, characterized in that, The demagnetizer also includes a tilting plate (40), which is movably disposed at the connection between the slag discharge pipe (13) and the demagnetizing pipe; The flip plate (40) includes a first position that cuts off the connection between the slag discharge pipe (13) and the demagnetizing pipe; The flip plate (40) includes a second position in which the slag discharge pipe (13) is connected to the demagnetizing pipe.

5. The demagnetization machine according to claim 4, characterized in that, The top end of the demagnetizing pipe includes a feed inlet (116), and the bottom end of the demagnetizing pipe includes a discharge outlet (117). When the flip plate (40) is in the second position, the pipe cavity of the demagnetizing pipe is divided into a first cavity and a second cavity that are isolated from each other by the flip plate (40). The second cavity is closer to the discharge outlet (117) than the first cavity, and the air outlet mechanism (30) is connected to the second cavity.

6. The demagnetization machine according to claim 4, characterized in that, The flip plate (40) is flipped and disposed at the connection between the slag discharge pipe (13) and the demagnetizing pipe.

7. The demagnetizer according to claim 1, characterized in that, The air outlet mechanism (30) extends obliquely upward relative to the demagnetizing pipe, and the angle between the air outlet mechanism and the demagnetizing pipe is between 5° and 85°; and / or The air intake mechanism (20) extends upward at an angle relative to the demagnetizing pipe and forms an angle between 5° and 85° with the demagnetizing pipe.

8. The demagnetization machine of claim 1, wherein, The air outlet mechanism (30) includes an air outlet pipe (31), an air outlet valve (32), and a filter element (33). The air outlet valve (32) is disposed on the air outlet pipe (31), and the filter element (33) is disposed inside the air outlet pipe (31). The air outlet valve (32) is located upstream of the filter element (33).

9. The demagnetization machine of claim 1, wherein, The demagnetizing pipe also includes an intermediate pipe section (112) that penetrates the demagnetizing body (12). The feed pipe section (111) has a feed inlet (116) at one end away from the intermediate pipe section (112), and the discharge pipe section (113) has a discharge outlet (117) at one end away from the intermediate pipe section (112).

10. The demagnetization machine according to claim 9, characterized in that, The demagnetizing pipe also includes a tubular connector (114), and the intermediate pipe section (112) and the discharge pipe section (113) are spaced apart and sealed together by the tubular connector (114).

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