A self-cleaning equipment for crushing and demagnetizing raw materials for magnesium oxide production

Abstract

The present invention discloses a self-cleaning magnesium oxide production raw material crushing and demagnetizing equipment, which relates to the technical field of magnesium oxide production. The invention comprises a demagnetizer having a second connecting disk rotatably connected on one side, a reciprocating screw rod having one end fixedly connected to a transmission gear, an inner-toothed rotary disk having one side fixedly connected, a transition gear being arranged between the inner-toothed rotary disk and the transmission gear, a support plate being fixedly installed on the top of the fixed base, and the transition gear and the transmission gear both rotating on the support plate, and the demagnetizer having a first connecting disk rotatably connected on the other side, a plurality of magnetic rods being fixedly arranged at equal intervals on the first connecting disk. In this magnesium oxide production raw material crushing and demagnetizing equipment, the magnet will repel the metal on the magnetic rod, causing the metal on its outer circle to move to a position of the outer circle away from the magnet, allowing the powder between the metals to flow out of the outside of the demagnetizer, preventing magnesium ore powder from being stuck between the metals on its outer circle, thereby improving the magnesium ore extraction rate and increasing the output.

Description

Technical Field

[0001] The invention relates to the technical field of magnesium oxide production, in particular to self-cleaning equipment for crushing and demagnetizing raw materials for magnesium oxide production. Background Art

[0002] Magnesium oxide exists in nature in the form of periclase and is the raw material for magnesium smelting. After being burned at a high temperature of more than 1000°C, it can be transformed into crystals. When the temperature rises to 1500-2000°C, it becomes dead-burned magnesium oxide (magnesia) or sintered magnesium oxide. After the initial treatment, the existing magnesium ore needs to enter a demagnetization step. Since the ore contains different metal elements in nature, it cannot be directly processed and used, and further demagnetization treatment is required. The existing preliminary treatment of magnesium ore is to put the magnesium ore into a crusher for crushing, and then put it into the demagnetization equipment to separate the magnesium and metal. The existing equipment crushing and demagnetization equipment are usually not in the same space, which makes the magnesium ore processing process lengthy and the feeding time between crushing and demagnetization is relatively long. And usually in the demagnetization equipment, multiple fixed magnetic bars are used to adsorb the metal in the magnesium ore, and the crushed magnesium ore is transported through the pipeline flow channel to the magnetic bar for flushing, so that the magnetic bar adsorbs the metal in the magnesium ore. Although the metal in the magnesium ore can be adsorbed, as the processing time increases, the metal debris accumulated in the magnetic bar becomes too thick, and the metal debris on the magnetic bar is easily accumulated as the metal debris is attracted to each other, resulting in a decrease in the discharge volume. The solution is to stop the machine for a period of time and manually clean the inside of the machine before continuing production, which increases the working time and is not conducive to long-term production. For this reason, we propose a self-cleaning magnesium oxide production raw material crushing and demagnetization equipment. Summary of the Invention

[0003] The object of the present invention is to provide a self-cleaning magnesium oxide production raw material crushing and demagnetization device to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a self-cleaning magnesium oxide production raw material crushing and demagnetization equipment, comprising a processing tank, a demagnetizer is fixedly installed on the bottom of the processing tank, a fixed base is fixedly installed on one side of the bottom of the demagnetizer, a support plate is fixedly installed on the fixed base, one side of the demagnetizer is rotatably connected to a second connecting disk, the other side of the demagnetizer is rotatably connected to a first connecting disk, a reciprocating screw is fixedly connected to the first connecting disk, one end of the reciprocating screw is fixedly connected to a transmission gear, one side of the second connecting disk is fixedly connected to an internal gear rotating disk, a transition gear is provided between the internal gear rotating disk and the transmission gear, and a support plate is fixedly installed on the top of the fixed base. The transition gear and the transmission gear both rotate on the support plate. A plurality of magnetic rods are fixedly arranged at equal intervals on the first connecting disk. A plurality of connecting holes are opened on the second connecting disk. One end of each magnetic rod passes through the connecting hole and conflicts with the second connecting disk. The rotation trajectories of the plurality of magnetic rods pass over the bottom of the processing tank. A bearing is fixedly connected to the middle part of one side of the first connecting disk. A reciprocating screw is fixedly connected to the inner ring of the bearing. A collar is slidably connected to each magnetic rod. A connecting ring is sleeved on the reciprocating screw. Each collar is rollingly connected to the connecting ring. A plurality of magnets are equidistantly arranged on the other side of the demagnetizer. The poles of the magnets and the magnetic rods are opposite. The reciprocating screw is slidably connected to the second connecting disk.

[0005] Preferably, a transfer disc is fixedly installed on the other side of the first connecting disc, and a plurality of slide grooves are equidistantly provided on the transfer disc, one end of each slide groove is close to the axis of the transfer disc, and the other end faces the edge of the transfer disc, and each slide groove is slidably connected to a centering roller. When metal accumulates on the magnetic rod, the first connecting disc and the transfer disc rotate, and the centering roller at the top slides on the slide groove to one end of the slide groove, so that the transfer disc assists the first connecting disc in rotating.

[0006] Preferably, the diameter of one end of each connecting hole facing the inside of the demagnetizer is smaller than the opening size of the other end, so that the shape of the connecting hole is trumpet-shaped, which is used to discharge the metal material on the surface of the magnetic rod to the outside of the demagnetizer.

[0007] Preferably, a separation leakage plate is fixedly connected between the processing tank and the demagnetizer. The separation leakage plate is S-shaped, one end of which is located at the top of the demagnetizer, and the other end is located in the middle of one side of the inner wall of the demagnetizer. A fan is fixedly installed on one side of the top of the demagnetizer, and a straight panel is provided on one end of the bottom side of the demagnetizer extending upward over the separation leakage plate. The top of the straight panel is connected to the demagnetizer to form an inverted slope, and a channel for transporting dust to the inside of the processing tank is formed between the inverted slope, the straight panel and the separation leakage plate.

[0008] Preferably, guide rails are fixedly installed on both sides of the bottom of the demagnetizer, and a guide plate is slidably connected between the two guide rails. Each of the magnets is located between two adjacent guide plates, and a spring is connected between each guide plate and the demagnetizer. A force sensor is fixedly connected to one of the guide plates.

[0009] Preferably, flow channel plates are provided on both sides of each of the diversion plates facing the movement tracks of the multiple magnetic bars, and the distance between the two flow channel plates on the same diversion plate and the movement tracks of the magnetic bars gradually increases.

[0010] Preferably, an air suction hood is hung on the top of the processing tank, a driving bevel gear is fixedly connected to the bottom of the air suction hood, an inner tank is fixedly connected to the top of the demagnetizer, and a dust rising flow channel is formed between the inner tank and the air suction hood.

[0011] Preferably, a collection frame is fixedly installed at the bottom of the inner ring of the inner tank, and a multi-layer crushing trough is opened in the inner ring of the collection frame. The bottom of the inner tank is rotatably connected to a distribution plate, and the distribution plate is made of a multi-layer plate structure stacked up and down. A plurality of crushing plates are equidistantly fixed on the outer ring of each layer of the plate structure, and the crushing plates and the crushing trough are slidably connected. The top of the distribution plate is fixedly connected to a connecting core, and the top of the connecting core is fixedly connected to an inner bevel gear plate, and a plurality of transition bevel gears are arranged between the inner bevel gear plate and the driving bevel gear.

[0012] Preferably, the material of the distribution tray is made of lightweight material, and the top thereof has a non-slip design.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] In the present invention, when the first connecting disk and the first connecting disk rotate, the first connecting disk can make one end of the multiple magnetic rods have a contact point with the connecting hole. At the same time, when the second connecting disk rotates, the inner gear turntable is rotated. When the inner gear turntable rotates, the transition gear and the transmission gear are meshed and transmitted on the fixed base. The transmission gear and the reciprocating screw rod are fixedly connected, and the reciprocating screw rod is rotated on the inner ring of the bearing. During the rotation of the magnetic rod, only the outer ring of the bearing follows the connecting ring to contact. During the rotation of each magnetic rod, each ring is driven to rotate on the connecting ring. The outer ring rolls, and the connecting ring adopts a groove design and a sleeve connection. When the reciprocating screw rotates, the connecting ring can be driven to move, and then the connecting ring drives the sleeve to move on the magnetic rod, wiping the metal on the magnetic rod to the connecting hole, and the metal is discharged to the outside as the second connecting disk rotates; the magnet will repel the metal on the magnetic rod, causing the metal on its outer ring to move to a position where the outer ring is away from the magnet, allowing the powder between the metals to flow out of the demagnetizer, preventing magnesium ore powder from being stuck between the metals on its outer ring, thereby improving the magnesium ore extraction rate and increasing the output. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0016] Figure 2 This is a schematic diagram of the overall internal structure of the present invention;

[0017] Figure 3 This is a schematic structural diagram of the material distribution tray and the crushing tray of the present invention;

[0018] Figure 4 This is a schematic diagram of the aggregate frame structure of the present invention;

[0019] Figure 5 For the present invention Figure 2 Schematic diagram of the enlarged structure at B in the middle;

[0020] Figure 6 For the present invention Figure 2 Schematic diagram of the enlarged structure at A in the middle;

[0021] Figure 7 It is a schematic diagram of the overall internal structure of the present invention from another perspective;

[0022] Figure 8 This is a schematic diagram of the structure of the demagnetizer housing of the present invention;

[0023] Figure 9 This is a schematic diagram of the structure of the rotating material tray of the present invention;

[0024] Figure 10 This is a schematic diagram of the internal structure of the demagnetizer of the present invention;

[0025] Figure 11 This is a schematic diagram of the structure of the drainage plate of the present invention;

[0026] Figure 12 This is a schematic structural diagram of the second connection disk of the present invention.

[0027] In the figure: 1-processing tank; 2-demagnetizer; 201-inverted slope; 202-straight plate; 203-first connecting plate; 3-rotating plate; 301-chute; 302-centering roller; 4-fixed base; 5-inner tank; 6-suction hood; 7-distributing plate; 8-crushing plate; 9-aggregate frame; 901-crushing trough; 10-second connecting plate; 11-inner gear rotating plate; 12-support plate; 13-transition gear ;14-transmission gear;15-connecting hole;16-connecting core;17-inner bevel gear;18-transition bevel gear;19-driving bevel gear;20-separation leak plate;21-magnetic rod;22-reciprocating screw rod;23-ring;24-connecting ring;25-bearing;26-force sensor;27-spring;28-guide rail;29-magnet;30-guide plate;3001-flow channel plate;31-fan. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] See also Figure 1-12 The present invention provides a technical solution: a self-cleaning magnesium oxide production raw material crushing and demagnetization equipment, comprising a processing tank 1, the side of the processing tank 1 is also provided with a feed hopper as shown in the attached Figure 1As shown, a demagnetizer 2 is fixedly installed at the bottom of the processing tank 1, a fixed base 4 is fixedly installed on one side of the bottom of the demagnetizer 2, a support plate 12 is fixedly installed on the fixed base 4, a second connecting disk 10 is rotatably connected to one side of the demagnetizer 2, and a first connecting disk 203 is rotatably connected to the other side of the demagnetizer 2, a reciprocating screw rod 22 is fixedly connected to the first connecting disk 203, one end of the reciprocating screw rod 22 is fixedly connected to a transmission gear 14, an inner gear rotating disk 11 is fixedly connected to one side of the second connecting disk 10, a transition gear 13 is arranged between the inner gear rotating disk 11 and the transmission gear 14, a support plate 12 is fixedly installed on the top of the fixed base 4, the transition gear 13 and the transmission gear 14 both rotate on the support plate 12, a plurality of magnetic rods 21 are fixedly arranged at equal intervals on the first connecting disk 203, The second connecting disk 10 is provided with a plurality of connecting holes 15, one end of each magnetic rod 21 passes through the connecting hole 15 and contacts the second connecting disk 10, and the rotation trajectory of the plurality of magnetic rods 21 passes over the bottom of the processing tank 1. A bearing 25 is fixedly connected to the middle part of one side of the first connecting disk 203, and a reciprocating screw rod 22 is fixedly connected to the inner ring of the bearing 25. A collar 23 is slidably connected to each magnetic rod 21, and a connecting ring 24 is sleeved on the reciprocating screw rod 22. Each collar 23 is rollingly connected to the connecting ring 24. A plurality of magnets 29 are equidistantly arranged on the other side of the demagnetizer 2. The magnetic poles of the magnets 29 and the magnetic rods 21 are opposite. The reciprocating screw rod 22 is slidably connected to the second connecting disk 10. When the crushing of the magnesium ore is completed inside the processing tank 1, it is immediately put into the demagnetizer 2 for further processing.Then, in the process of the magnesium ore contacting the magnetic rod 21, the metal has the same magnetic poles as the magnetic rod 21, causing the magnetic rod 21 to rotate. As the processing time increases, the magnetic rod 21 gradually accumulates metal on the outside, and the gravity of one or more magnetic rods 21 becomes greater, which makes it easy for other magnetic rods 21 to rotate in the direction of the magnetic rod 21 with a relatively large thickness, so that multiple magnetic rods 21 can drive the first connecting disk 203 and the first connecting disk 203 to rotate during the processing process. The first connecting disk 203 and the first connecting disk 203 are made of lightweight materials, which makes it easy for the magnetic rod 21 to rotate. When the first connecting disk 203 and the first connecting disk 203 rotate, the first connecting disk 203 can make one end of the multiple magnetic rods 21 have a contact point with the connecting hole 15. At the same time, during the rotation of the second connecting disk 10, the inner tooth turntable 11 is rotated. When the inner tooth turntable 11 rotates During the rotation, the transition gear 13 and the transmission gear 14 are meshed and transmitted on the fixed base 4, and the transmission gear 14 is fixedly connected to the reciprocating screw rod 22, so that the reciprocating screw rod 22 rotates on the inner ring of the bearing 25. During the rotation of the magnetic rod 21, only the outer ring of the bearing 25 follows the contact with the connecting ring 24. During the rotation of each magnetic rod 21, each sleeve ring 23 is driven to roll on the outer ring of the connecting ring 24. The connecting ring 24 adopts a groove design and the sleeve ring 23 is connected. When the reciprocating screw rod 22 rotates, the connecting ring 24 can be driven to move and then the connecting ring 24 drives the sleeve ring 23 to move on the magnetic rod 21, wiping the metal on the magnetic rod 21 to the connecting hole 15, and the metal is discharged to the outside as the second connecting disk 10 rotates. When the connecting ring 24 is located on one side of the demagnetizer 2, it can be manually assisted in rotation to reset the connecting ring 24.

[0030] As a further solution, connecting holes 15 (not shown) can be opened on the rotating material plate 3 and the first connecting plate 203 at the same time. In this way, without the need for manual assistance, the rotation of the reciprocating screw 22 will also cause the connecting ring 24 to move back and forth on the magnetic rod 21, thereby pushing out the metal on the magnetic rod 21 and saving labor costs.

[0031] It is worth mentioning that when the multiple magnetic bars 21 are rotating, the multiple magnets 29 located at the bottom of the demagnetizer 2 will approach a magnetic bar 21 that is in the rotating process. The magnetic poles of the magnetic bar 21 and the magnet 29 are opposite, so that the magnet 29 will repel the metal on the magnetic bar 21, causing the metal in its outer circle to move to a position where the outer circle is away from the magnet 29, allowing the powder between the metals to flow out of the demagnetizer 2, preventing magnesium ore powder from being stuck between the metals in its outer circle, thereby improving the magnesium ore extraction rate and increasing the output.

[0032] Furthermore, a rotating disc 3 is fixedly installed on the other side of the first connecting disc 203, and a plurality of slide grooves 301 are equidistantly provided on the rotating disc 3, each of the slide grooves 301 has one end close to the axis of the rotating disc 3 and the other end toward the edge of the rotating disc 3, and each of the slide grooves 301 is slidably connected to a centering roller 302. When metal accumulates on the magnetic rod 21, the first connecting disc 203 and the rotating disc 3 rotate, and the centering roller 302 at the top slides on the slide groove 301 and moves to one end of the slide groove 301, so that the rotating disc 3 assists the first connecting disc 203 to rotate. When the multiple magnetic rods 21 rotate, the first connecting disc 203 will also drive the rotating disc 3 to rotate synchronously. During the rotation of the rotating disc 3, the centering roller 302 at the top moves, so that the overall center of gravity will be offset, allowing the rotating disc 3 to drive the first connecting disc 203 to rotate sustainably, thereby improving the rotation time of the reciprocating screw rod 22.

[0033] Furthermore, the diameter of one end of each connecting hole 15 facing the inside of the demagnetizer 2 is smaller than the opening size of the other end, so that it has a trumpet shape, which is used to discharge the metal material on the surface of the magnetic rod 21 to the outside of the demagnetizer 2, making it convenient for the metal on the connecting hole 15 to be easily discharged to the outside of the demagnetizer 2 during the rotation of the second connecting disk 10.

[0034] Furthermore, a separation leakage plate 20 is fixedly connected between the processing tank 1 and the demagnetizer 2. The separation leakage plate 20 is S-shaped, one end of which is located at the top of the demagnetizer 2, and the other end is located in the middle of one side of the inner wall of the demagnetizer 2. A fan 31 is fixedly installed on one side of the top of the demagnetizer 2, and a straight panel 202 is provided on one end of the bottom side of the demagnetizer 2 extending upward over the separation leakage plate 20. The top of the straight panel 202 is connected to the demagnetizer 2 to form an inverted slope 201, and a passage for transporting dust to the inside of the processing tank 1 is formed between the inverted slope 201, the straight panel 202 and the separation leakage plate 20. The leakage hole of the separation leakage plate 20 is opened beside the inverted slope 201. When the material is discharged from the bottom of the processing tank 1, the fan 31 is turned on. The fan 31 blows the magnesium ore powder through the separation leakage plate 20, and the magnesium ore powder with relatively large weight and the powder with relatively small weight will be separated. The magnesium ore powder with relatively large weight will flow along the separation leakage plate 20 to the magnetic rod 21, and the powder with relatively small weight will be affected by the wind force and will be hit on the inverted slope 201 and the straight plate 202, causing rebound. After the powder rebounds, it is discharged upward by the wind force, thereby improving the uniformity of the overall particles of the magnesium ore.

[0035] Furthermore, guide rails 28 are fixedly installed on both sides of the bottom of the demagnetizer 2, and a guide plate 30 is slidably connected between the two guide rails 28. Each of the magnets 29 is located between two adjacent guide plates 30, and a spring 27 is connected between each guide plate 30 and the demagnetizer 2. A force sensor 26 is fixedly connected to one of the guide plates 30; a flow channel plate 3001 is provided on both sides of each guide plate 30 facing the movement trajectory of the multiple magnetic rods 21, and the two flow channel plates 3001 located on the same guide plate 30 are stepped with the distance between the side of the guide plate 30 and the movement trajectory of the magnetic rod 21. When the magnetic bar 21 absorbs the metal, it may contact the magnet 29 during the rotation process. At this time, the flow plate 3001 of the guide plate 30 can be used to separate and remove the metal on the magnetic bar 21. When the metal on a certain magnetic bar 21 rolls on the flow plate 3001, the flow plate 3001 allows the metal to move to a certain position on the magnetic bar 21, thereby assisting the magnet 29 to easily repel the metal on the magnetic bar 21, which is more conducive to pouring out the powder between the metals. The force sensor 26 can assist manual identification of whether the magnetic bar 21 rotates and the position of the magnetic bar 21, thereby making a judgment.

[0036] Furthermore, an air suction hood 6 is suspended on the top of the processing tank 1, and a driving bevel gear 19 is fixedly connected to the bottom of the air suction hood 6. The top of the demagnetizer 2 is fixedly connected to the inner tank 5, and a dust ascending flow channel is formed between the inner tank 5 and the air suction hood 6; an aggregate frame 9 is fixedly installed on the bottom of the inner ring of the inner tank 5, and a multi-layer crushing trough 901 is opened on the inner ring of the aggregate frame 9. A distributing plate 7 is rotatably connected to the bottom of the inner tank 5, and the distributing plate 7 is made of a multi-layer plate structure stacked up and down, and a plurality of crushing plates 8 are equidistantly fixed on the outer ring of each layer of the plate structure, and the crushing plate 8 and the crushing trough 901 are slidably connected. The top of the distributing plate 7 is fixedly connected to a connecting core 16, and the top of the connecting core 16 is fixedly connected to an inner bevel gear plate 17, and the inner bevel gear plate 17 and the driving bevel gear 19 A plurality of transition bevel gears 18 are arranged in between; the material of the distribution plate 7 is made of lightweight material, and its top has a non-slip design. The magnesium ore enters the distribution plate 7 from the side feed hopper of the processing tank 1, and a motor is installed on the top of the suction hood 6 to discharge the dust flowing into the dust ascending flow channel to the outside. At the same time, when the suction hood 6 rotates, the driving bevel gear 19 drives the plurality of transition bevel gears 18 to rotate, and the rotation of the plurality of transition bevel gears 18 drives the inner bevel gear plate 17 to drive the connecting core 16 to rotate in a high-speed and low-torque manner. The connecting core 16 can drive the distribution plate 7 to rotate during the rotation process. The distribution plate 7 allows the magnesium ore at its top to be discharged into the multi-layer crushing trough 901 by centrifugal means, so that the rotating crushing plate 8 is ground and crushed, thereby reducing the feeding time of the device.

[0037] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0038] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A self-cleaning equipment for crushing and demagnetizing raw materials for magnesium oxide production, comprising a processing tank, characterized in that: A demagnetizer is fixedly installed at the bottom of the processing tank, a fixed base is fixedly installed on one side of the bottom of the demagnetizer, a support plate is fixedly installed on the fixed base, one side of the demagnetizer is rotatably connected to a second connecting disk, and the other side of the demagnetizer is rotatably connected to a first connecting disk, a reciprocating screw rod is fixedly connected to the first connecting disk, one end of the reciprocating screw rod is fixedly connected to a transmission gear, one side of the second connecting disk is fixedly connected to an internal gear turntable, a transition gear is provided between the internal gear turntable and the transmission gear, a support plate is fixedly installed on the top of the fixed base, the transition gear and the transmission gear both rotate on the support plate, and the first A plurality of magnetic rods are fixedly arranged at equal intervals on a connecting disk, a plurality of connecting holes are opened on a second connecting disk, one end of each magnetic rod passes through the connecting hole and contacts the second connecting disk, and the rotation tracks of the plurality of magnetic rods pass over the bottom of the processing tank, a bearing is fixedly connected to the middle part of one side of the first connecting disk, a reciprocating screw rod is fixedly connected to the inner ring of the bearing, a collar is slidably connected to each magnetic rod, a connecting ring is sleeved on the reciprocating screw rod, and each collar is rollingly connected to the connecting ring, a plurality of magnets are equidistantly arranged on the other side of the demagnetizer, the magnetic poles of the magnets and the magnetic rods are opposite, and the reciprocating screw rod is slidably connected to the second connecting disk; A transfer disc is fixedly mounted on the other side of the first connecting disc, and a plurality of chutes are equidistantly provided on the transfer disc, with one end of each chute close to the axis of the transfer disc and the other end toward the edge of the transfer disc, and a centering roller is slidably connected to each chute. When metal accumulates on the magnetic bar, the first connecting disc and the transfer disc rotate, and the centering roller at the top slides on the chute and moves to one end of the chute, so that the transfer disc assists the rotation of the first connecting disc; A separation leak plate is fixedly connected between the processing tank and the demagnetizer. The separation leak plate is S-shaped, with one end located at the top of the demagnetizer and the other end located in the middle of one side of the inner wall of the demagnetizer. A fan is fixedly installed on one side of the top of the demagnetizer. A straight panel is provided on one side of the bottom of the demagnetizer, extending upward over one end of the separation leak plate. The top of the straight panel is connected to the demagnetizer to form an inverted slope, and a channel for transporting dust into the processing tank is formed between the inverted slope, the straight panel and the separation leak plate. Guide rails are fixedly installed on both sides of the bottom of the demagnetizer, and a guide plate is slidably connected between the two guide rails. Each magnet is located between two adjacent guide plates. A spring is connected between each guide plate and the demagnetizer, and a force sensor is fixedly connected to one of the guide plates.

2. A self-cleaning magnesium oxide production raw material crushing and demagnetization device according to claim 1, characterized in that: The diameter of one end of each connection hole facing the inside of the demagnetizer is smaller than the opening size of the other end, so that the shape of the connection hole is trumpet-shaped, which is used to discharge the metal material on the surface of the magnetic rod to the outside of the demagnetizer.

3. A self-cleaning magnesium oxide production raw material crushing and demagnetization device according to claim 1, characterized in that: Flow channel plates are arranged on both sides of each guide plate facing the movement tracks of the multiple magnetic bars. The distance between the two flow channel plates on the same guide plate and the movement tracks of the magnetic bars gradually increases.

4. A self-cleaning magnesium oxide production raw material crushing and demagnetization device according to claim 1, characterized in that: A suction hood is hung on the top of the processing tank, and a driving bevel gear is fixedly connected to the bottom of the suction hood. In addition to the magnetic machine, an inner tank is fixedly connected to the top, and a dust rising flow channel is formed between the inner tank and the suction hood.

5. A self-cleaning magnesium oxide production raw material crushing and demagnetization device according to claim 4, characterized in that: A collection frame is fixedly installed at the bottom of the inner ring of the inner tank, and a multi-layer crushing trough is opened in the inner ring of the collection frame. The bottom of the inner tank is rotatably connected to a distribution plate, which is made of a multi-layer plate structure stacked up and down. Multiple crushing plates are equidistantly fixed on the outer ring of each layer of the plate structure. The crushing plates and the crushing trough are slidingly connected. The top of the distribution plate is fixedly connected to a connecting core, and the top of the connecting core is fixedly connected to an inner bevel gear plate. Multiple transition bevel gears are arranged between the inner bevel gear plate and the driving bevel gear.

6. A self-cleaning magnesium oxide production raw material crushing and demagnetization device according to claim 5, characterized in that: The material of the distribution plate is made of lightweight material and its top has a non-slip design.

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