A magnesium powder preparation device and method

Abstract

The present invention provides a magnesium powder preparation device and method, which relates to the technical field of magnesium powder preparation, and includes: a bracket and a ball mill; the bracket is provided with a driving mechanism for driving the ball mill to rotate, the side wall of the ball mill is fixedly connected to a loading hopper, the bottom surface of the loading hopper is fixedly connected to a first rotation source, the driving shaft of the first rotation source is fixedly connected to a loading cone arranged in the loading hopper, the loading cone is connected to a plurality of material-pickling blocks, the inner side surface of the loading hopper is fixedly connected to a spiral tooth, the outer side surface of the loading cone is fixedly connected to a first pressing rod, the first pressing rod can cooperate with the spiral tooth to extrude the material, and the distance between the outer side surface of the first pressing rod and the inner side surface of the spiral tooth gradually decreases from top to bottom. The present invention has the function of improving the efficiency of beating magnesium bars into powder.

Description

Technical Field

[0001] The present invention relates to the technical field of magnesium powder preparation, and in particular to a magnesium powder preparation device and method. Background Art

[0002] Magnesium powder usually refers to the powder state of elemental magnesium. The appearance of magnesium powder is silvery white powder with metallic luster. Magnesium powder is an active metal. Magnesium powder is mainly used as a reducing agent to prepare flash powder and lead alloys, and as a desulfurizer in metallurgy. When used as a desulfurizer raw material in the metallurgical industry, a layer of passivating agent is wrapped around the outside of the magnesium powder particles to prevent the magnesium powder from oxidizing. In addition, magnesium powder is used as an organic synthetic illuminant, which is mainly made from electrolytically molten magnesium chloride and electrolytically molten dehydrated carnallite. Magnesium powder is usually made from magnesium ingots cut into strip-shaped chips by chip cutting equipment, and then ground into powder by a ball mill.

[0003] For example, the Chinese patent with the authorization announcement number CN117483770B, entitled "An ultra-fine spherical magnesium powder production device and preparation method", drives the material shifting member to rotate in the ball mill through the driving part, so that the material shifting member lifts the steel balls and materials, and the steel balls crush the materials on the lower side of the ball mill, while the material shifting member can scrape off the magnesium powder particles adhering to the inner wall of the ball mill due to the force impact. By setting an arc-shaped mesh plate, the magnesium powder that meets the particle requirements can be discharged from the ball mill in real time, reducing the material inventory in the ball mill, and allowing the steel balls to crush the remaining magnesium powder that does not meet the requirements.

[0004] In view of the above-mentioned related technologies, during the chip cutting process, magnesium chips will produce a large number of burrs and flash, and will also curl. Therefore, magnesium chips have sharp edges and curled chips. Due to their extremely irregular appearance, when they are transported into the ball mill, the curled chips are easy to agglomerate. The agglomerated chips are flattened by the grinding balls in the ball mill, and the chips are difficult to be crushed into powder in this process. Moreover, the crushed and flattened chips after agglomeration increase the volume of the material, and the larger volume of the material reduces the efficiency of grinding the material into powder. Summary of the invention

[0005] In view of this, the present invention provides a magnesium powder preparation device and method, aiming to solve the problem that rolled debris is easy to agglomerate in a ball mill, and the agglomerated debris is flattened by grinding balls in the ball mill, and the debris is difficult to be beaten into powder in this process.

[0006] To solve the above technical problems, in the first aspect, the present invention provides a magnesium powder preparation device, comprising a bracket and a ball mill; the bracket is provided with a driving mechanism for driving the ball mill to rotate, the side wall of the ball mill is fixedly connected to a loading hopper, the bottom surface of the loading hopper is fixedly connected to a first rotation source, the driving shaft of the first rotation source is fixedly connected to a loading cone arranged in the loading hopper, the loading cone is connected to a plurality of material shifting blocks, the inner side surface of the loading hopper is fixedly connected to a spiral tooth, the outer side surface of the loading cone is fixedly connected to a first pressing rod, the first pressing rod can cooperate with the spiral tooth to extrude the material, and the distance between the outer side surface of the first pressing rod and the inner side surface of the spiral tooth gradually decreases from top to bottom.

[0007] By adopting the above technical solution, the material-shifting block rotates to separate the magnesium strips, reducing the probability of the magnesium strips curling into a mass. The spiral teeth cooperate with the first pressing rod to squeeze the separated magnesium strips while transporting them downward, squeezing the magnesium strips into blocks or thinner strips, reducing the surface area of ​​the magnesium strips while reducing the number of curled magnesium strips, thereby reducing the probability of the magnesium strips rotating in the ball mill and forming a mass again, and improving the efficiency of beating the magnesium strips into powder.

[0008] Optionally, the feeding cone is provided with a plurality of slide grooves, the inner side surfaces of the slide grooves are fixedly connected to a limit ring, the material removing block is slidably connected to the limit ring, an extrusion spring is arranged in the slide groove for pushing the material removing block to extend out of the surface of the feeding cone, the side wall of the feeding hopper is fixedly connected to a support rod, the support rod is provided with an air inlet groove for introducing an inert gas, and the inert gas can push the material removing block to move into the feeding cone, and the feeding cone rotates so that different slide grooves are alternately connected to the inside of the air inlet groove, the inner side surface of the feeding hopper is connected to a sliding plate and a reset spring for pushing the sliding plate downward, and the surface of the sliding plate is inclined and fixedly connected with a pushing plate for pushing the material downward.

[0009] By adopting the above technical solution, the material shifting block cooperates with the sliding plate, and the material shifting block drives the sliding plate to move upward through the magnesium bar. When the material shifting block is separated from the magnesium bar, the sliding plate pushes the magnesium bar to move downward, so that when the material shifting block rotates to separate the magnesium bar, the sliding plate assists in unloading the magnesium bar.

[0010] Optionally, a second pressing rod is fixedly connected to the inner side surface of the upper hopper.

[0011] By adopting the above technical solution, the second pressing rod increases the friction between the magnesium strip and the inner side of the upper hopper, thereby improving the separation effect of the material removal block on the magnesium strip.

[0012] Optionally, the driving mechanism includes a second rotation source fixedly connected to the bracket, the driving shaft of the second rotation source is fixedly connected to a driving gear, the outer side surface of the ball mill is fixedly sleeved with a gear ring, and the driving gear and the gear ring are transmission connected by gear meshing.

[0013] Optionally, a plurality of inner lining plates are detachably connected to the inner side surface of the ball mill, and the inner lining plates are used to protect the side walls of the ball mill.

[0014] Optionally, the inner lining plate consists of a first lining plate and a second lining plate, the first lining plate and the second lining plate are alternately arranged along the circumference of the ball mill, the two side edges of the cross section of the first lining plate are parallel to each other, and the cross section of the second lining plate is trapezoidal.

[0015] By adopting the above technical solution, the first liner does not interfere with the second liner when moving along the radial direction of the ball mill. When removing the inner liner, the first liner can be removed first, and then the second liner. When the inner liner is worn, it can be replaced.

[0016] Optionally, a ventilation groove for introducing inert gas is opened in the ball mill cylinder, and a gas delivery groove is opened in the second liner along the tangential direction of the ball mill cylinder, and the gas delivery groove is connected to the inside of the ventilation groove.

[0017] By adopting the above technical solution, the operator can transport inert gas into the ball mill through the ventilation groove and the gas delivery groove, thereby protecting the magnesium powder. The gas delivery groove is opened along the tangential direction of the ball mill to reduce the amount of magnesium powder moving into the gas delivery groove.

[0018] Optionally, a discharge port is formed on the side wall of the ball mill away from the upper hopper, a negative pressure fan connected to the inside of the discharge port is fixedly connected to the outer side of the ball mill, and a screen plate is fixedly connected to one end of the inner side of the ball mill near the discharge port.

[0019] In a second aspect, the present invention provides a method for preparing magnesium powder, which is applied to a magnesium powder preparation device described in the first aspect, and the preparation method is:

[0020] S1, the operator puts the material into the loading hopper, the first rotation source drives the loading cone to rotate, and the material-prying block rotates synchronously with the loading cone to separate the clumped materials;

[0021] S2, the material shifting block drives the material to rotate, and the material pushes the sliding plate to move upward through the pushing plate, and the chute and the material shifting block rotate synchronously and are connected to the inside of the air inlet groove, and the inert gas pushes the material shifting block to move toward the inside of the chute, so that the material shifting block is separated from the material, and the return spring pushes the material downward to the spiral teeth.

[0022] S3, the feeding cone drives the material to rotate through the first pressing rod, and the material moves along the length direction of the spiral teeth. The spiral teeth can cooperate with the first pressing rod to extrude the separated material while transporting it downward. The extruded material enters the ball mill and is crushed into magnesium powder by grinding balls.

[0023] In summary, compared with the prior art, the present invention includes at least one of the following beneficial technical effects:

[0024] 1. The rotating block separates the magnesium strips, reducing the probability of the magnesium strips curling into a ball. The spiral teeth cooperate with the first pressing rod to squeeze the separated magnesium strips while transporting them downward, squeezing the magnesium strips into blocks or thinner strips, reducing the surface area of ​​the magnesium strips and reducing the number of curled magnesium strips, thereby reducing the probability of the magnesium strips rotating in the ball mill and forming a ball again, and improving the efficiency of beating the magnesium strips into powder.

[0025] 2. The material shifting block cooperates with the sliding plate. The material shifting block drives the sliding plate to move upward through the magnesium bar. When the material shifting block is separated from the magnesium bar, the sliding plate pushes the magnesium bar to move downward. Therefore, when the material shifting block rotates to separate the magnesium bar, the sliding plate assists in unloading the magnesium bar. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention;

[0027] Figure 2 This is a schematic structural diagram of an upper hopper according to an embodiment of the present invention;

[0028] Figure 3 A schematic diagram of the internal structure of the upper hopper according to an embodiment of the present invention;

[0029] Figure 4 A schematic diagram of the internal structure of a loading cone according to an embodiment of the present invention;

[0030] Figure 5 For the embodiment of the present invention Figure 2 A partial enlarged view of the middle area A;

[0031] Figure 6 It is a structural schematic diagram of a driving mechanism according to an embodiment of the present invention;

[0032] Figure 7 This is a schematic diagram of the structure of the inner lining plate according to an embodiment of the present invention;

[0033] Figure 8 This is a schematic diagram of the structure of a filter plate according to an embodiment of the present invention;

[0034] Fig. 9 For the embodiment of the present invention Figure 8 A partial enlarged view of area B in the middle.

[0035] Explanation of the reference numerals in the accompanying drawings: 1. bracket; 2. ball mill; 21. ventilation groove; 22. discharge port; 23. screen plate; 3. driving mechanism; 31. second rotation source; 32. driving gear; 33. gear ring; 34. connecting gear; 4. loading hopper; 41. spiral teeth; 42. support rod; 421. air inlet groove; 43. sliding plate; 431. pushing plate; 44. return spring; 45. second pressing rod; 5. first rotation source; 51. loading cone; 511. material pushing block; 512. first pressing rod; 513. slide groove; 514. limiting ring; 515. extrusion spring; 516. connecting groove; 6. inner lining plate; 61. first lining plate; 62. second lining plate; 621. air transmission groove. DETAILED DESCRIPTION

[0036] To make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the following will be combined with the embodiments of the present invention. Figure 1-Figure 9 , the technical scheme of the embodiment of the present invention is clearly and completely described. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention.

[0037] In the first aspect, this embodiment provides a magnesium powder preparation device, referring to Figure 1 , Figure 2 and Figure 3 A magnesium powder preparation device includes a bracket 1, a ball mill 2, a driving mechanism 3, a loading hopper 4, a first rotation source 5, a loading cone 51, a prying block 511, a spiral tooth 41 and a first pressing rod 512.

[0038] Reference Figure 1 , Figure 2 and Figure 3 The bracket 1 is erected on a horizontal plane, the ball mill 2 is rotatably connected to the bracket 1, and the inside of the ball mill 2 is filled with a plurality of grinding balls. The driving mechanism 3 is arranged at the lower end of the bracket 1, and is used to drive the ball mill 2 to rotate. The upper hopper 4 is fixedly connected to the side wall of the ball mill 2, and is used to receive materials. The first rotating source 5 is fixedly connected to the bottom surface of the upper hopper 4, and the loading cone 51 is coaxially fixedly connected to the driving shaft of the first rotating source 5, and the loading cone 51 is located in the upper hopper 4. The material shifting block 511 is connected to the conical side of the loading cone 51, and there are multiple material shifting blocks 511 distributed along the circumference and axial direction of the loading cone 51, and the material shifting block 511 can extend out of the surface of the loading cone 51.

[0039] Reference Figure 2 and Figure 3The spiral teeth 41 are fixedly connected to the lower end of the inner side of the upper hopper 4, and the first pressing rod 512 is fixedly connected to the outer side of the upper cone 51. There are multiple first pressing rods 512 distributed along the circumference of the upper hopper 4, and each first pressing rod 512 is arranged along the axial direction of the upper cone 51. The first pressing rod 512 can cooperate with the spiral teeth 41 to extrude the material, and the distance between the outer side of the first pressing rod 512 and the inner side of the spiral teeth 41 gradually decreases from top to bottom. The inner side of the upper hopper 4 is fixedly connected with multiple second pressing rods 45 along the circumference, and all the second pressing rods 45 are arranged along the axial direction of the upper hopper 4.

[0040] The operator cuts the magnesium ingot into strip-shaped debris and puts the strip-shaped debris into the loading hopper 4 as raw materials. The first rotating source 5 drives the loading cone 51 to rotate, and the material block 511 rotates synchronously with the loading cone 51 to separate the agglomerated materials. The second pressing rod 45 increases the friction between the magnesium strip and the inner side of the loading hopper 4, and improves the separation effect of the material block 511 on the magnesium strip. The material falls to the spiral teeth 41, and the loading cone 51 drives the material to rotate clockwise through the first pressing rod 512 (refer to Figure 3 ), the material moves along the length direction of the spiral teeth 41, thereby causing the material to rotate around the central axis of the feeding cone 51 and move downward. Since the distance between the outer side of the first pressing rod 512 and the inner side of the spiral teeth 41 gradually decreases from top to bottom, the spiral teeth 41 can cooperate with the first pressing rod 512 to compact the separated magnesium bars while transporting downward, and the compacted magnesium bars enter the ball mill 2, and the driving mechanism 3 drives the ball mill 2 to rotate, and the grinding balls are used to break the magnesium bars into magnesium powder.

[0041] The material-selecting block 511 rotates to separate the magnesium strips, reducing the probability of the magnesium strips curling into a mass. The spiral teeth 41 cooperate with the first pressing rod 512 to squeeze the separated magnesium strips while transporting them downward, squeezing the magnesium strips into blocks or thinner strips, reducing the surface area of ​​the magnesium strips while reducing the number of curled magnesium strips, thereby reducing the probability of the magnesium strips rotating in the ball mill 2 and forming a mass again, and improving the efficiency of beating the magnesium strips into powder.

[0042] Reference Figure 4 and Figure 5The feeding cone 51 is provided with a plurality of slide grooves 513 along the circumferential and axial directions, and the slide grooves 513 arranged along the axial direction are connected in series with a connecting groove 516. The inner side surface of the slide groove 513 is fixedly connected to a limit ring 514, and the material shifting block 511 is slidably connected to the limit ring 514. An extrusion spring 515 is arranged in the slide groove 513 for pushing the material shifting block 511 out of the surface of the feeding cone 51. A support rod 42 is fixedly connected to the side wall of the feeding hopper 4, and an air inlet groove 421 for introducing inert gas is arranged in the support rod 42. The feeding cone 51 rotates so that different slide grooves 513 are alternately connected to the inside of the air inlet groove 421, and the inert gas can push the material shifting block 511 to move into the feeding cone 51. The inner side surface of the feeding hopper 4 is connected to a sliding plate 43 and a return spring 44 for pushing the sliding plate 43 downward. The surface of the sliding plate 43 is fixedly connected with a pushing plate 431 for pushing the material downward.

[0043] When the extrusion spring 515 pushes the material-pickup block 511 out of the surface of the loading cone 51, the material-pickup block 511 rotates synchronously with the loading cone 51 and can drive the magnesium strip to rotate around the central axis of the loading cone 51. The material-pickup block 511 drives the magnesium strip to rotate clockwise near the sliding plate 43 (refer to Figure 3 ), the magnesium bar pushes the sliding plate 43 upward through the push plate 431, and the reset spring 44 is compressed at this time. The material-pickup block 511 continues to rotate, and the chute 513 and the material-pickup block 511 rotate synchronously and are connected to the inside of the air inlet groove 421. The inert gas enters the chute 513 through the air inlet groove 421, and the inert gas pushes the material-pickup block 511 to move toward the inside of the chute 513, so that the material-pickup block 511 moves into the inside of the feeding cone 51, so that the material-pickup block 511 is separated from the magnesium bar, and the extrusion spring 515 is compressed at this time. The magnesium bar rotated to the sliding plate 43 lacks the support of the material-pickup block 511, and the reset spring 44 pushes the magnesium bar downward to the spiral tooth 41. The material-pickup block 511 continues to rotate around the central axis of the feeding cone 51, thereby causing the sliding plate 43 to move up and down reciprocatingly to push the magnesium bar to the spiral tooth 41.

[0044] The material shifting block 511 cooperates with the sliding plate 43, and the material shifting block 511 drives the sliding plate 43 to move upward through the magnesium bar. When the material shifting block 511 is separated from the magnesium bar, the sliding plate 43 pushes the magnesium bar to move downward, so that when the material shifting block 511 rotates to separate the magnesium bar, the sliding plate 43 assists in unloading the magnesium bar.

[0045] Reference Figure 6The driving mechanism 3 includes a second rotation source 31, a driving gear 32, a connecting gear 34 and a gear ring 33. The second rotation source 31 is fixedly connected to the bracket 1, the driving gear 32 is fixedly sleeved on the driving shaft of the second rotation source 31, the gear ring 33 is fixedly sleeved on the outer side of the ball mill 2, the connecting gear 34 is rotationally connected to the bracket 1, the connecting gear 34 is arranged between the driving gear 32 and the gear ring 33, and the driving gear 32 and the gear ring 33 are both meshed with the connecting gear 34. The second rotation source 31 drives the ball mill 2 to rotate through the driving gear 32, the connecting gear 34 and the gear ring 33 in sequence.

[0046] Reference Figure 7 and Figure 8 The inner side of the ball mill 2 is detachably connected with a plurality of inner lining plates 6, which are used to protect the side wall of the ball mill 2. The inner lining plates 6 are composed of a first lining plate 61 and a second lining plate 62. A plurality of the first lining plates 61 and the second lining plates 62 are distributed along the axial direction of the ball mill 2, and the first lining plates 61 and the second lining plates 62 are alternately arranged along the circumference of the ball mill 2. The two sides of the cross section of the first lining plate 61 are parallel to each other, and the side surface of the first lining plate 61 abutting against the inner side surface of the ball mill 2 is arc-shaped. The cross section of the second liner 62 is a trapezoid, and the longer end of the second liner 62 abuts against the inner side surface of the ball mill 2, thereby the first liner 61 and the second liner 62 alternately arranged along the circumference of the ball mill 2 form a circle, and the two waist edges of the trapezoidal cross section of the second liner 62 are perpendicular to the side wall of the ball mill 2, and the first liner 61 abuts against the second liner 62, thereby the first liner 61 does not interfere with the second liner 62 when moving along the radial direction of the ball mill 2, and when disassembling the inner liner 6, the first liner 61 can be disassembled first, and then the second liner 62 can be disassembled, which is convenient for replacing the inner liner 6 when it is worn.

[0047] Reference Figure 8 and Fig. 9 The ball mill 2 is provided with a ventilation groove 21 for introducing inert gas, and the second liner 62 is provided with a gas delivery groove 621 along the tangent direction of the ball mill 2. The gas delivery groove 621 is connected to the inside of the ventilation groove 21. The operator delivers inert gas into the ball mill 2 through the ventilation groove 21 and the gas delivery groove 621, thereby protecting the magnesium powder. The gas delivery groove 621 is provided along the tangent direction of the ball mill 2 to reduce the amount of magnesium powder that moves into the gas delivery groove 621 when the ball mill 2 rotates.

[0048] Reference Figure 6 and Figure 8The side wall of the ball mill 2 away from the upper hopper 4 is provided with a discharge port 22, the outer side of the ball mill 2 is fixedly connected to a negative pressure fan connected to the inside of the discharge port 22, and the inner side of the ball mill 2 is fixedly connected to a screen plate 23 near the discharge port 22. The gas delivery trough 621 outputs an inert gas flow to lift the magnesium powder, and the negative pressure fan introduces negative pressure air flow into the ball mill 2 through the discharge port 22, so that the magnesium powder is discharged through the screen plate 23 and the discharge port 22 in turn, and the screen plate 23 filters the magnesium powder to prevent the output of magnesium powder with too large a diameter.

[0049] The implementation principle of a magnesium powder preparation device according to an embodiment of the present invention is as follows: an operator puts a magnesium bar into a loading hopper 4, and the first rotating source 5 drives the loading cone 51 to rotate, and the material-dispensing block 511 rotates synchronously with the loading cone 51 to separate the agglomerated materials. The rotating magnesium bar pushes the sliding plate 43 to move upward through the pushing plate 431, and the chute 513 rotates synchronously with the material-dispensing block 511 and is connected to the inside of the air inlet groove 421. The inert gas pushes the material-dispensing block 511 to move inside the chute 513, so that the material-dispensing block 511 is separated from the magnesium bar, and the reset spring 44 pushes the magnesium bar downward to the spiral teeth 41. The loading cone 51 drives the material to rotate through the first pressing rod 512, and the material moves along the length direction of the spiral teeth 41. The spiral teeth 41 can cooperate with the first pressing rod 512 to squeeze the separated magnesium bar while transporting it downward, and the squeezed magnesium bar enters the ball mill 2, and the grinding balls are used to break the magnesium bar into magnesium powder.

[0050] In a second aspect, an embodiment of the present invention provides a method for preparing magnesium powder, which is applied to a magnesium powder preparation device in the first aspect, and the preparation method is:

[0051] S1, the operator puts the magnesium bar into the loading hopper 4, the first rotating source 5 drives the loading cone 51 to rotate, and the material-prying block 511 rotates synchronously with the loading cone 51 to separate the agglomerated materials;

[0052] S2, the material shifting block 511 drives the magnesium bar to rotate, and the magnesium bar pushes the sliding plate 43 to move upward through the pushing plate 431, and the slide groove 513 and the material shifting block 511 rotate synchronously and are connected to the inside of the air inlet groove 421, and the inert gas pushes the material shifting block 511 to move toward the inside of the slide groove 513, so that the material shifting block 511 is separated from the magnesium bar, and the return spring 44 pushes the magnesium bar downward to the spiral tooth 41.

[0053] S3, the loading cone 51 drives the material to rotate through the first pressing rod 512, and the material moves along the length direction of the spiral teeth 41. The spiral teeth 41 can cooperate with the first pressing rod 512 to extrude the separated magnesium bars while transporting downward. The extruded magnesium bars enter the ball mill 2 and are crushed into magnesium powder by grinding balls.

[0054] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0055] The above are preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A magnesium powder preparation device, comprising a bracket and a ball mill, characterized in that: The bracket is provided with a driving mechanism for driving the ball mill to rotate, and a side wall of the bracket away from the ball mill is fixedly connected to a loading hopper, the loading hopper is communicated with the ball mill, the bottom surface of the loading hopper is fixedly connected to a first rotation source, the driving shaft of the first rotation source is fixedly connected to a loading cone arranged in the loading hopper, a material shifting block is connected to the conical side surface of the loading cone, and a plurality of material shifting blocks are distributed along the circumferential and axial directions of the loading cone, and the material shifting blocks can extend out of the surface of the loading cone, the inner side surface of the loading hopper is fixedly connected to a spiral tooth, and the outer side surface of the loading cone is fixedly connected to a first pressing rod, the first pressing rod can cooperate with the spiral tooth to extrude the material, and the distance between the outer side surface of the first pressing rod and the inner side surface of the spiral tooth gradually decreases from top to bottom; The feeding cone is provided with a plurality of slide grooves along the circumferential direction and the axial direction, and the slide grooves arranged along the axial direction are connected in series with a connecting groove, the inner side surface of the slide groove is fixedly connected to a limit ring, the material shifting block is slidably connected to the limit ring, an extrusion spring is arranged in the slide groove for pushing the material shifting block to extend out of the surface of the feeding cone, the side wall of the feeding hopper is fixedly connected to a support rod, an air inlet groove for introducing an inert gas is arranged in the support rod, and the inert gas can push the material shifting block to move into the feeding cone, and the feeding cone rotates so that different slide grooves are alternately connected with the inside of the air inlet groove, the inner side surface of the feeding hopper is connected to a sliding plate and a reset spring that pushes the sliding plate downward, and the surface of the sliding plate is tilted and fixedly connected with a pushing plate for pushing the material downward; The material-shifting block drives the magnesium bar to rotate clockwise close to the sliding plate, and the magnesium bar pushes the sliding plate upward through the push plate, at which time the return spring is compressed; The inert gas enters the connecting groove through the air inlet groove and then enters the chute. The inert gas pushes the material shifting block to move toward the inside of the chute, so that the material shifting block moves into the inside of the loading cone.

2. A magnesium powder preparation device according to claim 1, characterized in that: The inner side surface of the upper hopper is fixedly connected with a second pressing rod.

3. A magnesium powder preparation device according to claim 1, characterized in that: The inner side surface of the ball mill cylinder is detachably connected with a plurality of inner lining plates, and the inner lining plates are used to protect the side walls of the ball mill cylinder.

4. A magnesium powder preparation device according to claim 3, characterized in that: The inner lining plate is composed of a first lining plate and a second lining plate, the first lining plate and the second lining plate are alternately arranged along the circumference of the ball mill, the two sides of the cross section of the first lining plate are parallel to each other, and the cross section of the second lining plate is a trapezoid.

5. A magnesium powder preparation device according to claim 4, characterized in that: A ventilation groove for introducing inert gas is provided in the ball mill cylinder, and a gas delivery groove is provided in the second liner along the tangential direction of the ball mill cylinder, and the gas delivery groove is communicated with the inside of the ventilation groove.

6. A magnesium powder preparation device according to claim 1, characterized in that: A discharge port is provided on the side wall of the ball mill away from the upper hopper, a negative pressure fan connected to the inside of the discharge port is fixedly connected to the outer side of the ball mill, and a sieve plate is fixedly connected to one end of the inner side of the ball mill near the discharge port.

7. A method for preparing magnesium powder, applied to the magnesium powder preparation device according to claim 1, characterized in that: include: S1, the operator puts the material into the loading hopper, the first rotation source drives the loading cone to rotate, and the material-prying block rotates synchronously with the loading cone to separate the clumped materials; S2, the material shifting block drives the material to rotate, the material pushes the sliding plate to move upward through the pushing plate, the chute and the material shifting block rotate synchronously and are connected to the inside of the air inlet groove, the inert gas pushes the material shifting block to move inside the chute, so that the material shifting block is separated from the material, and the return spring pushes the material downward to the spiral teeth; S3, the feeding cone drives the material to rotate through the first pressing rod, and the material moves along the length direction of the spiral teeth. The spiral teeth can cooperate with the first pressing rod to extrude the separated material while transporting it downward. The extruded material enters the ball mill and is crushed into magnesium powder by grinding balls.

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