Magnesium chips crushing device

Abstract

The present invention relates to the technical field of crushing devices, and specifically discloses a magnesium chip crushing device, comprising: a base, a ball mill is rotatably mounted on the base, a blow pipe is mounted in the ball mill along its axial direction, and the blow pipe can rotate around the axis of the ball mill, a blow hole is provided on the blow pipe, and cooling gas can be delivered to the ball mill, a bracket is fixedly mounted on the blow pipe, a separation plate and a collection cover are fixedly mounted on the bracket, and the bracket is connected to the outside of the ball mill, and the blow pipe has two relative motion positions. Beneficial effects of the present invention: the separation plate can separate the generated micro powder from the material, and the micro powder is driven by the cooling gas into the collection cover and then discharged, and at the same time, in the process of the material falling, it will form convection with the rising cooling gas to take away the heat in the material, which can not only discharge the micro powder generated during the work, but also cool the material, effectively reducing the risk of explosion.

Description

Technical Field

[0001] The invention relates to the technical field of crushing devices, and in particular to a magnesium chip crushing device. Background Art

[0002] my country ranks first in the world in terms of magnesium resource reserves and raw magnesium production. At present, magnesium has been widely used in various industries, especially in the chemical, military, aerospace and other industries. Magnesium chips are one of the most representative magnesium deep-processing products in my country's magnesium industry in recent years. Magnesium chips are explosive. As the concentration of magnesium chips increases, the explosion becomes more harmful. In addition, the smaller the particle size of magnesium powder, the greater the explosion hazard.

[0003] A Chinese patent with the authorization announcement number CN216826490U discloses an energy-saving and environmentally friendly corundum grinding device, including a ball mill cylinder, end covers are respectively provided at both ends of the ball mill cylinder, a hollow rotating shaft is integrally formed on the two end covers, the two hollow rotating shafts are respectively provided as a feed end and a discharge end, a liner is installed inside the ball mill cylinder, grinding balls are provided inside the liner, a rubber pad is provided between the liner and the inner wall of the ball mill cylinder, elastic buffers are respectively provided on both sides of the rubber pad, and a blower and an exhaust fan are respectively provided at the feed end and the discharge end of the ball mill cylinder. The utility model can improve the collection efficiency of finished materials and avoid the waste of raw materials. In addition, a rubber pad and an elastic buffer are provided between the liner and the inner wall of the ball mill cylinder.

[0004] A ball mill is needed to crush magnesium chips, but a lot of micropowder will be produced during the grinding process. The micropowder will float inside the ball mill. As the working time increases, the micropowder will become more and more. At the same time, the friction between the grinding balls and the material will increase the temperature inside the ball mill. The micropowder in a high temperature environment greatly increases the risk of explosion, so the generated micropowder needs to be discharged in time. Summary of the invention

[0005] The present invention provides a magnesium chip crushing device, aiming to solve the technical problem in the related technology that a lot of micro powder will be generated during the grinding process of a ball mill, and the micro powder will float inside the ball mill tube. As the working time increases, the micro powder will become more and more. At the same time, the friction between the grinding balls and the materials will increase the temperature inside the ball mill tube. The micro powder is in a high temperature environment and the risk of explosion is greatly increased.

[0006] A magnesium chip crushing device of the present invention comprises: a base, a ball mill is rotatably mounted on the base, an air blowing pipe is mounted in the ball mill along its axial direction, and the air blowing pipe can rotate around the axis of the ball mill, an air blowing hole is provided on the air blowing pipe, and cooling gas can be transported into the ball mill, a bracket is fixedly mounted on the air blowing pipe, a separation plate and a collecting cover are fixedly mounted on the bracket, and the bracket is communicated with the outside of the ball mill, the air blowing pipe has two relative movement positions, when it is in the first position, it is in a non-working state, the air blowing pipe is close to the horizontal plane where the axis of the ball mill is located, so that the ball milling beads are located below the air blowing pipe, when it is in the second position, it is in a working state, the air blowing pipe is close to the vertical plane where the axis of the ball mill is located, the separation plate can block the material brought up by the rotation of the ball mill, the generated micro powder can pass through the separation plate, the cooling gas blown out of the air blowing hole can form convection with the falling material, the material can be cooled, and the cooling gas can drive the micro powder to be discharged from the collecting cover.

[0007] Beneficial effect: Before starting work, there are ball milling beads at the bottom of the ball mill, so the air blowing pipe is close to the horizontal plane where the axis of the ball mill is located. During operation, materials are added into the ball mill through the feeding structure, and the ball mill drives the materials to rotate. The materials and ball milling beads will be lifted up along the inner wall of the ball mill and then fall down. At this time, the air blowing pipe rotates downward, close to the vertical plane where the axis of the ball mill is located. The ball mill drives the materials to rotate upward and then falls down. The separation plate can separate the generated micro powder from the material. The micro powder is driven by the cooling gas into the collection cover and then discharged. At the same time, in the process of the material falling, it will form convection with the rising cooling gas to take away the heat in the material.

[0008] Preferably, the ball mill is connected to a feed pipe, a feed auger is rotatably installed in the feed pipe, a friction disk is provided on the feed auger, a ratchet is installed on the friction disk, the ratchet is fixedly connected to the air pipe, so that the feed auger can drive the air pipe to rotate, and a baffle plate is fixedly installed on the bracket, the material falls on the baffle plate, exerts a force in the opposite direction of rotation to the air pipe, and can force the air pipe to stop rotating.

[0009] The effect is that the feeding auger can drive the blowing pipe to rotate.

[0010] Preferably, the collecting hood is in a C-shaped structure with its opening facing the separation plate, the interior of the collecting hood is a hollow structure, and a collecting hole is provided on the inner side of the collecting hood.

[0011] The effect is that the fine powder separated by the separation plate can be collected by the collection cover and discharged.

[0012] Preferably, the ball mill is also connected to a discharge pipe, in which a discharge auger is rotatably installed, the interior of the discharge auger shaft is a hollow structure, a swivel seat is fixedly connected to the bracket, the swivel seat and the discharge auger are rotatably matched, and a conveying pipe is connected to the collecting cover, and the conveying pipe is connected to the discharge auger.

[0013] The effect is that the micro powder collected by the collecting cover can be finally discharged through the inside of the discharging auger.

[0014] Preferably, a sieve plate is fixedly installed inside the ball mill, and a plurality of material shifting plates are circumferentially arranged on the side wall of the ball mill close to the discharge pipe.

[0015] The effect is that the screen plate can screen the material in the ball mill, and the material shifting plate can shift the material so that the material is discharged from the discharge pipe.

[0016] Preferably, a driving motor is installed on the base, a driving gear is installed on the output end of the driving motor, and a gear ring meshing with the driving gear is fixedly installed on the outer peripheral wall of the ball mill.

[0017] Preferably, the bracket is in a Y-shaped structure, and the separation plate and the collection cover are fixedly mounted on both ends of the bracket.

[0018] Preferably, the air blowing tube is Z-shaped and has an open structure at one end.

[0019] By adopting the above technical scheme, the beneficial effects of the present invention are as follows: the ball mill drives the material to rotate, the material and the ball mill beads will be lifted up along the inner wall of the ball mill, the ball mill drives the material to rotate upward and then falls down, the separation plate can separate the generated micro powder from the material, the micro powder is driven by the cooling gas into the collection cover and then discharged, and at the same time, in the process of the material falling, it will form convection with the rising cooling gas to take away the heat in the material, which can not only discharge the micro powder generated during the work, but also cool the material, effectively reducing the risk of explosion. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a stereogram of the present invention.

[0021] Figure 2 It is a cross-sectional view of the present invention.

[0022] Figure 3 It is an axonometric cross-sectional view of the present invention.

[0023] Figure 4 For the present invention Figure 3 Enlarged view of point A in the middle.

[0024] Figure 5 It is a structural schematic diagram of the air blowing pipe of the present invention.

[0025] Figure 6 It is a schematic diagram of the non-working state of the present invention.

[0026] Figure 7 It is a schematic diagram of the working state of the present invention.

[0027] Reference numerals:

[0028] 10. Hopper; 11. Feed pipe; 12. Feed auger; 13. Base; 14. Ball mill; 15. Discharge pipe; 16. Discharge auger; 17. Screen plate; 18. Discharge plate; 20. Drive motor; 21. Drive gear; 22. Gear ring; 30. Air blow pipe; 31. Air blow hole; 32. Bracket; 33. Collecting cover; 34. Separation plate; 35. Baffle plate; 36. Rotating seat; 37. Collecting hole; 38. Delivery pipe; 40. Friction disc; 41. Ratchet. DETAILED DESCRIPTION

[0029] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0030] like Figures 1 to 7 As shown, a specific embodiment of a magnesium chip crushing device of the present invention includes a hopper 10, a feeding structure, a ball mill 14, a discharging structure, a driving mechanism, an air blowing pipe 30, a friction transmission component, a bracket 32, a collecting cover 33, a separation plate 34 and a baffle plate 35;

[0031] The feeding structure and the discharging structure are respectively installed on both sides of the ball mill 14, and the hopper 10 is connected with the feeding structure, so that the material enters the ball mill 14 through the hopper 10 and the feeding structure for crushing, and is discharged through the discharging structure after completion.

[0032] An air blowing pipe 30 is rotatably installed inside the ball mill 14 , and one end of the air blowing pipe 30 is connected to the feeding structure through a friction transmission component, so that when the feeding structure is feeding, the air blowing pipe 30 can be driven to rotate through the friction transmission component.

[0033] The blowing pipe 30 is provided with a blowing hole 31 , and cooling gas can be introduced into the blowing pipe 30 and ejected from the blowing hole 31 to cool the material.

[0034] A Y-shaped bracket 32 ​​is fixedly connected to the air blowing pipe 30, and a collecting cover 33 and a separation plate 34 are fixedly installed at both ends of the bracket 32. When the ball mill 14 drives the material to rotate, the separation plate 34 can separate the generated fine powder from the material. The fine powder is driven by the cooling gas into the collecting cover 33 and then discharged. When the material falls, it will form convection with the rising cooling gas to take away the heat in the material.

[0035] The material blocking plate 35 is also fixedly mounted on the bracket 32 ​​and is used to shield the air blowing pipe 30 . When the material falls, it will hit the material blocking plate 35 .

[0036] Before starting work, there are ball milling beads at the bottom of the ball mill 14, so the air blowing pipe 30 is close to the horizontal plane where the axis of the ball mill 14 is located (such as Figure 6), when working, materials are added into the ball mill 14 through the feeding structure, and the ball mill 14 drives the materials to rotate. The materials and the ball mill beads are lifted along the inner wall of the ball mill 14 and then fall down. At this time, the air blowing pipe 30 rotates downward and approaches the vertical plane where the axis of the ball mill 14 is located (such as Figure 7 ), the ball mill 14 drives the material to rotate to the top and then falls down, the separation plate 34 can separate the generated fine powder from the material, the fine powder is driven by the cooling gas into the collection cover 33 and then discharged, and at the same time, in the process of the material falling, it will form convection with the rising cooling gas to take away the heat in the material.

[0037] like Figure 1 The ball mill 14 is rotatably mounted on the base 13, and the driving mechanism includes a driving motor 20 mounted on the base 13. A driving gear 21 is mounted on the output end of the driving motor 20. A gear ring 22 is fixedly mounted on the outer peripheral wall of the ball mill 14. The gear ring 22 is meshed with the driving gear 21, so that the driving motor 20 can drive the ball mill 14 to rotate.

[0038] like Figure 1 and Figure 2 The feeding structure includes a feeding pipe 11 connected to the ball mill 14 , the feeding pipe 11 is connected to a hopper 10 , materials can be added into the feeding pipe 11 through the hopper 10 , and a feeding auger 12 is rotatably installed in the feeding pipe 11 .

[0039] The discharging structure includes a discharging pipe 15 connected to the ball mill 14, and a discharging auger 16 is rotatably installed in the discharging pipe 15. The shafts of the feeding auger 12 and the discharging auger 16 are both hollow structures, and both are driven by motors (not shown in the figure).

[0040] like Figure 3 A sieve plate 17 is fixedly installed on one side of the ball mill 14 near the discharge pipe 15. During the rotation of the material in the ball mill 14, the material gradually becomes smaller, and the qualified size material passes through the sieve plate 17 and enters the other side.

[0041] A plurality of material shifting plates 18 are circumferentially arranged on the side wall of the ball mill 14 near the discharge pipe 15. When the ball mill 14 rotates, the material shifting plates 18 can continuously shift qualified materials between the sieve plate 17 and the side wall of the ball mill 14 near the discharge pipe 15, and then drop them onto the discharge pipe 15 and are transported out by the discharge auger 16.

[0042] like Figure 3 and Figure 5 In this embodiment, the blowing pipe 30 is roughly Z-shaped and has an open end. The blowing pipe 30 has an air intake section, a connecting section and a blowing section. The air intake section is located inside the feed auger 12 and is coaxially arranged with the feed auger 12. The end of the air intake section away from the blowing section is connected to a blowing mechanism (not shown in the figure), so that the cooling gas can be delivered into the blowing pipe 30.

[0043] The air inlet section is connected to the feed auger 12 via a friction transmission assembly, so that the air blowing pipe 30 can be driven to rotate when the feed auger 12 rotates.

[0044] The blowing section is located inside the ball mill 14, and one end of the blowing section away from the air inlet section is a closed mechanism, and the blowing section is close to the inner wall of the ball mill 14, and the connecting section connects the air inlet section with the blowing section. A blowing hole 31 is opened near the upper position of the blowing section to blow out the cooling gas. During the falling process of the material, convection will be formed with the rising cooling gas to take away the heat in the material and cool the material.

[0045] like Figure 5 and Figure 7 A plurality of Y-shaped brackets 32 are fixedly installed on the blowing section of the blowing pipe 30. The brackets 32 are evenly distributed along the axial direction of the blowing pipe 30. The two ends of the brackets 32 located at the top are respectively fixedly installed with a collecting cover 33 and a separation plate 34.

[0046] The separation plate 34 is tilted and located on the side where the material in the ball mill 14 rolls. When the ball mill 14 rotates, the material and the ball mill beads will be lifted up along the inner wall of the ball mill 14. The material and the ball mill beads will fall after rising to a certain height. The heavier material will fall earlier, and the lighter material will rise higher. The separation plate 34 can play a shielding and separation role. First, it can shield the material that rises to a relatively high position to prevent it from being thrown a long distance and falling into the blowing section of the blowing pipe 30 after falling. On the other hand, the fine powder generated during work can pass through the separation plate 34 to achieve a separation effect.

[0047] The collecting hood 33 is a C-shaped structure with its opening facing the direction of the separation plate 34. The interior of the collecting hood 33 is a hollow structure, and a collecting hole 37 is provided on the inner side of the collecting hood 33. The collecting hole 37 is connected to the interior of the collecting hood 33. Since both sides of the ball mill 14 are almost sealed, the cooling gas will drive the powder into the interior of the collecting hood 33 after rising to the top.

[0048] A swivel seat 36 is fixedly installed on the bracket 32 ​​near the discharge side. The swivel seat 36 rotates with the end of the discharge auger 16 to fix the bracket 32 ​​and reduce the bearing capacity of the blowing pipe 30. A conveying pipe 38 is connected to the collection cover 33. The conveying pipe 38 is fixedly connected to the swivel seat 36 and is connected to the inner axis of the discharge auger 16, so that the powder entering the collection cover 33 can be discharged through the inner axis of the discharge auger 16.

[0049] The bracket 32 ​​is provided with an inclined baffle plate 35 near the blowing pipe 30. The baffle plate 35 can not only prevent the material from falling and hitting the blowing pipe 30, but also, when the material falls on the baffle plate 35, it will give it a thrust in the opposite direction of the rotation of the ball mill 14, which is opposite to the direction in which the feed auger 12 drives it to rotate. The feed auger 12 drives the blowing pipe 30 to rotate through the friction force on the friction transmission component. The thrust of the falling material on the baffle plate 35 will offset the friction force on the friction transmission component, so that the blowing pipe 30 maintains this state and no longer rotates. The following will introduce in detail how the friction transmission component drives the blowing pipe 30 to rotate.

[0050] like Figure 4 The friction transmission assembly includes two friction discs 40 installed at the ends of the feed auger 12, and the two friction discs 40 are matched with each other through friction transmission, one of the friction discs 40 is fixedly connected to the end of the feed auger 12, and a ratchet 41 is installed on the other friction disc 40, and the ratchet 41 is fixedly connected to the air inlet end of the air blowing pipe 30, so that when the feed auger 12 rotates, the air blowing pipe 30 can be driven to rotate by the friction between the two friction discs 40. When the air blowing pipe 30 rotates to a vertical position close to the axis of the ball mill 14, the continuously falling materials will fall on the baffle plate 35, which will give it a thrust in the opposite direction of rotation of the ball mill 14. The thrust on the baffle plate 35 will offset the friction on the friction transmission assembly, so that the air blowing pipe 30 maintains this state and no longer rotates.

[0051] The ratchet 41 allows the air pipe 30 to rotate in the opposite direction of the feed auger 12 without being constrained, so that when the device completes its work, the air pipe 30 is pushed by the material to return to a horizontal position close to the axis of the ball mill 14.

[0052] Before starting work, there are many ball milling beads at the bottom of the ball mill 14, so the air blowing pipe 30 is close to the horizontal plane where the axis of the ball mill 14 is located (such as Figure 6 ), when working, materials are added into the ball mill 14 through the feeding auger 12, and the ball mill 14 drives the materials to rotate. The rotation of the feeding auger 12 drives the air blow pipe 30 to rotate through the two friction plates 40 and the ratchet 41. The air blow pipe 30 rotates downward and approaches the vertical plane position where the axis of the ball mill 14 is located (such as Figure 7 ), the continuously falling materials will fall on the baffle plate 35, which will give the air blowing pipe 30 a thrust in the opposite direction of the rotation of the ball mill 14 and the feed auger 12. The thrust on the baffle plate 35 will offset the friction on the friction transmission component, so that the air blowing pipe 30 maintains this state and no longer rotates.

[0053] The materials and the ball mill beads will be carried up along the inner wall of the ball mill 14. The heavier materials will fall down earlier, while the lighter materials will rise higher. The separation plate 34 can play a role of shielding and separation. First, it can shield the materials that rise to a relatively high position to prevent them from being thrown out a long distance and hitting the blowing section of the blowing pipe 30 after falling. On the other hand, the fine powder generated during the work can pass through the gap between the separation plate 34 and the inner wall of the ball mill 14, or a small amount of fine powder may also pass through from under the separation plate 34, thereby achieving the separation effect of the materials and the fine powder (such as Figure 7 As the material falls, it forms convection with the rising cooling gas, which takes away the heat in the material and cools it down.

[0054] After the cooling gas rises to the top, it will drive the fine powder into the collecting cover 33 , and the fine powder entering the collecting cover 33 will be discharged through the axis of the discharging auger 16 through the conveying pipe 38 .

[0055] It can not only discharge the generated fine powder, but also cool the material, effectively reducing the risk of explosion and ensuring the safety of the device.

[0056] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A magnesium chip crushing device, comprising: A base (13), on which a ball mill (14) is rotatably mounted; The invention is characterized in that an air blowing pipe (30) is installed in the ball mill (14) along its axial direction, and the air blowing pipe (30) can rotate around the axis of the ball mill (14), and the air blowing pipe (30) is provided with an air blowing hole (31) for conveying cooling gas into the ball mill (14), and a bracket (32) is fixedly installed on the air blowing pipe (30), and a separation plate (34) and a collection cover (33) are fixedly installed on the bracket (32), and the bracket (32) is communicated with the outside of the ball mill (14); The air blowing pipe (30) has two relative movement positions. When it is in the first position, it is in a non-working state. The air blowing pipe (30) is close to the horizontal plane where the axis of the ball mill (14) is located, so that the ball mill beads are located below the air blowing pipe (30). When it is in the second position, it is in a working state. The air blowing pipe (30) is close to the vertical plane where the axis of the ball mill (14) is located. The separation plate (34) can block the material brought up by the rotation of the ball mill (14). The generated fine powder can pass through the separation plate (34). The cooling gas blown out of the air blowing hole (31) will form convection with the falling material, which can cool the material. The cooling gas can also drive the fine powder to be discharged from the collection cover (33).

2. A magnesium chip crushing device according to claim 1, characterized in that: The ball mill cylinder (14) is connected to a feed pipe (11), a feed auger (12) is rotatably mounted in the feed pipe (11), a friction disc (40) is provided on the feed auger (12), a ratchet (41) is mounted on the friction disc (40), the ratchet (41) is fixedly connected to the air blowing pipe (30), so that the feed auger (12) can drive the air blowing pipe (30) to rotate, and a material baffle plate (35) is fixedly mounted on the bracket (32), and when the material falls on the material baffle plate (35), a force in the opposite direction of rotation is applied to the air blowing pipe (30), so that the air blowing pipe (30) is forced to stop rotating.

3. A magnesium chip crushing device according to claim 1, characterized in that: The collecting hood (33) is of a C-shaped structure, with an opening facing the direction of the separation plate (34); the interior of the collecting hood (33) is of a hollow structure, and a collecting hole (37) is provided on the inner side of the collecting hood (33).

4. A magnesium chip crushing device according to claim 1, characterized in that: The ball mill cylinder (14) is connected to a discharge pipe (15), a discharge auger (16) is rotatably mounted in the discharge pipe (15), the shaft of the discharge auger (16) is a hollow structure, a rotating seat (36) is fixedly connected to the bracket (32), the rotating seat (36) and the discharge auger (16) are rotatably matched, and a conveying pipe (38) is connected to the collection cover (33), and the conveying pipe (38) is connected to the discharge auger (16).

5. A magnesium chip crushing device according to claim 4, characterized in that: A sieve plate (17) is fixedly installed inside the ball mill cylinder (14), and a plurality of material shifting plates (18) are circumferentially arranged on the side wall of the ball mill cylinder (14) close to the discharge pipe (15).

6. A magnesium chip crushing device according to any one of claims 1 to 5, characterized in that: A driving motor (20) is mounted on the base (13), a driving gear (21) is mounted on the output end of the driving motor (20), and a gear ring (22) meshing with the driving gear (21) is fixedly mounted on the outer peripheral wall of the ball mill (14).

7. A magnesium chip crushing device according to claim 6, characterized in that: The bracket (32) is in a Y-shaped structure, and the separation plate (34) and the collection cover (33) are fixedly mounted on both ends of the bracket (32).

8. A magnesium chip crushing device according to claim 7, characterized in that: The air blowing pipe (30) is in a Z-shape and has an open structure at one end.

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