Raymond mill for producing aluminum-nickel alloy powder

Abstract

The application discloses an aluminum-nickel alloy powdering Raymond grinder, which comprises a shell, a spiral air duct, a main shaft, a grinding ring, a grinding roller, a quincunx support and a spade knife; a storage cylinder is arranged above the main shaft and fixedly connected to the shell; the quincunx support is arranged around the storage cylinder and drives the grinding roller to rotate; a plurality of discharge holes are arranged at the bottom of the storage cylinder; a feeding pipe is arranged on the shell and extends to above the storage cylinder; a material collecting mechanism is arranged in the storage cylinder and intermittently rotates to discharge materials into the discharge holes; and the material collecting mechanism is arranged above the discharge holes. The storage cylinder with a plurality of discharge holes is fixedly arranged above the main shaft of the Raymond grinder, so that materials can uniformly fall into the grinding chamber, the uneven distribution problem caused by the side feeding of the existing grinder is avoided, and the grinding effect is improved.

Description

Technical Field

[0001] This invention relates to the field of grinding technology, and in particular to a Raymond mill for grinding aluminum-nickel alloy powder. Background Technology

[0002] AlNi catalysts, primarily referring to "skeletal nickel" catalysts, are solid catalysts with a porous structure formed by alkaline activation of nickel-aluminum alloys. Industrial production generally involves key steps such as high-temperature alloy melting, cooling, crushing and sieving, alkaline activation, washing, and storage. During cooling, rotary cooling rollers are typically used for rapid cooling, resulting in a thin, sheet-like material that is then fed into a grinding mill for powdering. Currently, Raymond mills are used for this purpose. A Raymond mill is a device that uses rotating grinding rollers and static grinding rings for crushing and grinding. The feeding method is a single-port side feed. The rotating grinding rollers severely hinder the entry of sheet-like materials into the crushing chamber, and this feeding method also causes materials to accumulate on one side of the crushing chamber, resulting in uneven raw material distribution.

[0003] Patent CN110433924A discloses a Raymond mill uniform material distribution device, which achieves uniform material distribution between grinding rollers by fixing a transition distribution cylinder above the rotating main shaft. However, in this method, the rotation of the main shaft generates a strong centrifugal force, which causes a large amount of material to enter the crushing chamber. The grinding rollers and grinding ring cannot process too much material in a short time, which easily causes equipment blockage. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a Raymond mill for aluminum-nickel alloy powder making, so as to solve the problems of the existing Raymond mill's truss hindering the entry of flaky materials into the grinding chamber and causing uneven material distribution.

[0005] The objective of this invention is achieved through the following technical solution: A Raymond mill for aluminum-nickel alloy powder production, comprising a shell, a spiral air duct, a main shaft, a grinding ring, a grinding roller, a plum blossom bracket, and a scraper. A storage cylinder is disposed directly above the main shaft and is fixedly connected inside the shell. The plum blossom bracket is evenly arranged around the storage cylinder and drives the grinding roller to rotate. The bottom of the storage cylinder is provided with multiple discharge holes. The shell is provided with a feed pipe, and the discharge port of the feed pipe extends to the top of the storage cylinder. The storage cylinder is provided with a material collecting mechanism that rotates intermittently and discharges material into the discharge holes. The material collecting mechanism is located above the discharge holes.

[0006] Preferably, the storage cylinder has a fixed lower support ring at its port, and the lower support ring has multiple spline sleeves. The number of spline sleeves, discharge holes, grinding rollers, and plum blossom brackets are matched. The spline sleeves pass through the lower support ring and are rotatably connected to it. There is a gap between the bottom end of the spline sleeve and the discharge hole. The material collection mechanism is set in the gap. The material collection mechanism includes a baffle ring and material collection blades. The baffle ring rotates and is fixedly connected to the bottom end of the spline sleeve. There are multiple material collection blades that are spaced around the surface of the baffle ring. The top end of the spline sleeve has multiple levers that are evenly spaced around the spline sleeve. Each plum blossom bracket has a push rod that drives the levers to rotate.

[0007] Preferably, the collecting blade is arc-shaped, and the rotation direction of the collecting blade is the same as the orientation of its inner arc surface.

[0008] Preferably, a guide pipe is provided below the discharge hole, the guide pipe is fixedly connected to the plum blossom bracket, one end of the guide pipe receives the material coming from the discharge hole, and the other end of the guide pipe extends to the feed port of the grinding roller and the grinding ring located behind.

[0009] Preferably, the spline sleeve has a matching spline shaft inside, a baffle is fixedly provided on the top of the spline shaft, the levers are evenly spaced along the circumference of the baffle, a spring is fitted on the outside of the spline shaft, the spring is located between the lower support ring and the baffle, an upper fixing ring matching the lower support ring is provided above the baffle, the upper fixing ring is fixedly connected to the lower support ring, a plurality of push blocks with inclined surfaces are fixedly provided on the baffle, the push blocks are arranged in a circle, a push rod is provided on the lower surface of the upper fixing ring to push the push blocks downward, the push rod and the push block are paired in pairs, the push rod is vertically fixedly connected to the lower surface of the upper fixing ring.

[0010] Preferably, the bottom end of the spline shaft extends into the discharge hole and periodically inserts or withdraws from the discharge hole.

[0011] Preferably, a plurality of crushing blades are fixedly provided at the bottom end of the spline shaft. The crushing blades are fixedly connected to the spline shaft. The crushing blades and the collecting blades are distributed alternately around the spline shaft. The crushing blades reciprocate up and down between the baffle ring and the bottom surface of the storage cylinder.

[0012] Preferably, the crushing blade includes a vertical cutting blade and a horizontal partitioning blade, with the two ends of the partitioning blade respectively abutting against the adjacent collecting blades.

[0013] Preferably, a material distribution cone is fixedly provided inside the storage cylinder, and the edge of the material distribution cone extends toward the material collecting blade.

[0014] The present invention has the following advantages: 1. By designing a storage cylinder with multiple discharge holes above the main shaft of the Raymond mill, the material can fall evenly into the grinding chamber, avoiding the uneven distribution problem caused by side feeding in existing mills and improving the grinding effect; 2. By designing a guide pipe on the plum blossom support, the material can be collected and transported to the grinding chamber, avoiding obstruction by the rotation of the plum blossom support during the discharge process. On the other hand, the material can be accurately delivered to the feed port of the grinding roller and grinding ring. Compared with scraping the material with a shovel, the single grinding capacity is increased, thus improving production efficiency. 3. By designing a push rod on the plum blossom bracket, it drives the lever to rotate during rotation, which in turn drives the spline shaft, spline sleeve, and collecting blades to rotate. The unique design structure ensures that the main shaft drives the guide pipe to rotate to a specific material-holding angle before the collecting mechanism operates to discharge material from the discharge port, preventing material from falling directly into the bottom of the grinding chamber, shortening the material movement path, and improving grinding efficiency. At the same time, the lever, in conjunction with the push block and top rod, can control the up-and-down reciprocating motion of the spline shaft, cutting blade, and partition blade, achieving the purpose of pre-crushing during the material feeding process to the discharge port and controlling the amount of material fed at one time, ensuring the stability of the system operation and improving the crushing effect. 4. The Raymond mill of the present invention enables materials to undergo two processing steps: pre-crushing and post-grinding. This improves the adaptability to flaky materials in the production process of aluminum-nickel alloys, ensures the uniformity of feeding during the grinding of aluminum-nickel alloy flaky materials, and improves the grinding effect and production efficiency. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 yes Figure 1 A schematic diagram of the cross-sectional structure; Figure 3 This is a schematic diagram of the internal structure of the present invention; Figure 4 This is a schematic diagram of the internal cross-sectional structure of the present invention; Figure 5 This is a partial cross-sectional structural schematic diagram of the present invention; Figure 6 This is a schematic diagram showing the positions of the crushing blade and the collecting blade of the present invention.

[0016] In the diagram, 1. Outer shell; 2. Classifier; 3. Spiral air duct; 4. Feed pipe; 5. Shovel; 6. Grinding ring; 7. Grinding roller; 8. Plum blossom bracket; 9. Main shaft; 10. Storage cylinder; 11. Discharge hole; 12. Guide pipe; 13. Lower support ring; 14. Splined shaft; 15. Splined sleeve; 16. Baffle plate; 17. Pulley; 18. Spring; 19. Upper fixing ring; 20. Push rod; 21. Push block; 22. Fixing rod; 23. Baffle ring; 24. Collecting blade; 25. Crushing blade; 26. Cutting blade; 27. Partitioning blade; 28. Push rod; 29. ​​Connecting rod; 30. Dividing cone. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0018] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0019] like Figure 1 , Figure 2 As shown, a Raymond mill for aluminum-nickel alloy powder production includes a shell 1, a classifier 2, a spiral duct 3, a main shaft 9, a grinding ring 6, grinding rollers 7, a perforated bracket 8, and a scraper 5. The classifier 2 is installed on the top of the shell 1, and the spiral duct 3 is installed on the lower part of the shell 1, through which gas is introduced into the crushing chamber. The main shaft 9 is installed at the center of the shell 1, and the scraper 5 is located at the bottom of the shell 1 and is fixedly connected to the main shaft 9. Multiple perforated brackets 8 are installed around the upper part of the main shaft 9, and each perforated bracket 8 has one grinding roller 7 hinged to its shaft, with a grinding ring 6, a grinding roller 7, and a grinding ring 7 mounted around its periphery. The grinding ring 6, outer shell 1, classifier 2, spiral air duct 3, main shaft 9, grinding ring 6, grinding roller 7, plum blossom bracket 8, and shovel 5 are all existing technologies. The storage cylinder 10 is installed directly above the main shaft 9. The storage cylinder 10 is fixedly connected to the outer shell 1 by multiple connecting rods 29. The plum blossom bracket 8 is evenly arranged around the storage cylinder 10. The bottom of the storage cylinder 10 is provided with 6 circular discharge holes 11. The outer shell 1 is provided with a feed pipe 4. The feed port of the feed pipe 4 is located outside the outer shell 1. The discharge port of the feed pipe 4 extends to the top of the storage cylinder 10. Material is vertically discharged into the storage cylinder 10 through the feed pipe 4.

[0020] like Figure 3 , Figure 4 As shown, a lower support ring 13 is fixedly connected to the upper port of the storage cylinder 10. Six spline sleeves 15 are installed on the lower support ring 13. A matching spline shaft 14 is provided inside the spline sleeve 15. The spline shaft 14 can slide up and down inside the spline sleeve 15. A circular baffle 16 is fixedly installed coaxially on the top of the spline shaft 14. The spline sleeve 15 passes through the lower support ring 13 and is rotatably connected to it. Multiple levers 17 are installed on the circumferential surface of the baffle 16. The levers 17 are horizontally and evenly distributed along the circumferential surface of the baffle 16. A push rod 28 that drives the lever 17 to rotate is installed on each spline bracket 8. The push rod 28 is installed vertically and can rotate with the spline bracket 8. During the rotation, the push rod 28 contacts the lever 17 and pushes the lever 17 to rotate. A spring 18 is fitted on the outside of the spline shaft 14. Located between the lower support ring 13 and the baffle 16, the spring 18 pushes the baffle 16 upward. An upper fixing ring 19 matching the lower support ring 13 is installed above the baffle 16. The upper fixing ring 19 has the same structure as the lower support ring 13. The upper fixing ring 19 and the lower support ring 13 are fixedly connected by multiple vertically installed fixing rods 22. Multiple push blocks 21 with inclined surfaces are fixed on each baffle 16. The push blocks 21 are distributed in a ring. The lower surface of the upper fixing ring 19 is provided with a push rod 20 that pushes the push blocks 21 downward. The push rod 20 is vertically installed on the lower surface of the upper fixing ring 19. The push rod 20 is also distributed in a ring. The push rod 20 and the push block 21 are paired up. The push rod 20 continuously contacts and slides down the inclined surface of the push block 21, so that the push block 21 moves up and down under the action of the push rod 20 during rotation.

[0021] The number of spline sleeve 15, spline shaft 14, discharge hole 11, grinding roller 7, and plum blossom bracket 8 are matched. The bottom end of spline sleeve 15 extends downward so that there is a certain gap between it and discharge hole 11. A material collection mechanism for controlling the discharge speed is provided in the gap. The material collection mechanism includes a baffle ring 23 and material collection blades 24. The baffle ring 23 is rotated and fixedly connected to the bottom end of spline sleeve 15. There are multiple material collection blades 24, which are distributed around the surface of baffle ring 23 at intervals. The material collection blades 24 are arc-shaped, and the rotation direction of the material collection blades 24 is the same as the orientation of their inner arc surface, so that they can form a gathering effect on the material. A material distribution cone 30 is installed in the center of the storage cylinder 10. The edge of the material distribution cone 30 extends toward the material collection blades 24, so that the material can slide into the gap.

[0022] In some embodiments, the bottom end of the spline shaft 14 extends into the discharge hole 11. A dredging rod structure can be installed at the bottom end of the spline shaft 14. During the process of rotating and moving up and down, the spline shaft 14 can periodically extend into or retract from the discharge hole 11, thereby clearing the discharge hole 11.

[0023] In some embodiments, such as Figure 5 , Figure 6As shown, a plurality of crushing blades 25 are fixedly provided at the bottom end of the spline shaft 14. The crushing blades 25 are fixedly connected to the spline shaft 14. The crushing blades 25 and the collecting blades 24 are distributed alternately around the spline shaft 14. The baffle ring 23 is provided with a sliding groove that matches the crushing blades 25. The crushing blades 25 move up and down between the baffle ring 23 and the bottom surface of the storage cylinder 10 to cut and crush the material.

[0024] The crushing blade 25 can be of various shapes. The crushing blade 25 used in this invention includes a vertical cutting blade 26 and a horizontal partition blade 27. The two ends of the partition blade 27 respectively abut against the adjacent collecting blades 24. After multiple partition blades 27 cut downwards, they can form a ring, which can block the material path entering the collecting blades 24. During the up-and-down reciprocating motion of multiple partition blades 27, the amount of material entering the discharge hole 11 can be limited, avoiding the blockage problem caused by excessive material discharge. Meanwhile, the cutting blade 26 can continuously move up and down to pre-crush the sheet-like material.

[0025] like Figure 3 As shown, each discharge hole 11 is provided with a guide pipe 12 below it. One end of the guide pipe 12 is funnel-shaped to collect the material coming from the discharge hole 11 above. The other end of the guide pipe 12 extends to the feed port of the grinding roller 7 and grinding ring 6 located behind. The middle part of the guide pipe 12 is fixedly connected to the flower bracket 8. The guide pipe 12 can rotate with the flower bracket 8. The guide pipe 12 does not feed the material to the feed port of the corresponding set of grinding roller 7 and grinding ring 6. Instead, it is installed at a certain angle, which can facilitate the material in the pipe to be thrown out and prevent blockage. Compared with the method of scraping up by the scraper 5, the material processing capacity of a single circle of grinding is increased and the grinding efficiency is improved.

[0026] Working principle: The main shaft 9 is started by an external motor to rotate, and the fan delivers air to the spiral duct 3. Personnel feed material into the storage cylinder 10 through the feed pipe 4. The material slides down into the discharge hole 11 under the action of the distribution cone 30. The rotation of the main shaft 9 drives the plum blossom bracket 8, the grinding roller 7, and the push rod 28 fixed on the plum blossom bracket 8 to rotate. During the rotation of the push rod 28, it contacts the lever 17 and pushes the lever 17 to rotate. The rotation of the lever 17 drives the baffle 16, the push block 21, and the spline shaft 14 to rotate. During the rotation, the push block 21 is continuously squeezed downward by the top rod 20, pushing the spline shaft 14 to move downward. At the same time, the spring 18 is compressed. When the contact point between the push rod 28 and the inclined surface of the push block 21 passes the highest point, the spring 18 rebounds, causing the spline shaft 14 to move upward, so that the contact point moves from the lowest point to the highest point again. This realizes that the spline shaft 14 continuously moves up and down during the rotation. 4. During the rotation, the spline sleeve 15 will rotate, which in turn will cause the baffle ring 23 and the collecting blade 24 to rotate. The collecting blade 24 will continuously collect the material in the storage cylinder 10 into the discharge hole 11. Simultaneously, the spline shaft 14 will move up and down, causing the cutting blade 26 and the partition blade 27 to move up and down reciprocally. The cutting blade 26 will cut the material into smaller pieces that enter the discharge hole 11. The partition blade 27 will continuously obstruct the material movement during its up and down movement, controlling the amount of material entering the discharge hole 11 at a time. After the material enters the discharge hole 11, it will fall into the guide pipe 12 below. At the same time, the guide pipe 12 will rotate centrifugally under the drive of the plum blossom bracket 8. The material inside will also be thrown towards the feed port between the grinding roller 7 and the grinding ring 6, preventing the material from falling directly to the bottom. After the grinding roller 7 and the grinding ring 6 crush the material, the airflow discharged from the spiral air duct 3 will blow the material up and discharge it after being screened by the classifier 2.

[0027] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A Raymond mill for grinding aluminum-nickel alloy powder, comprising a shell (1), a spiral air duct (3), a main shaft (9), a grinding ring (6), a grinding roller (7), a plum blossom support (8), and a shovel (5), characterized in that: A storage cylinder (10) is provided directly above the main shaft (9). The storage cylinder (10) is fixedly connected inside the outer shell (1). The plum blossom bracket (8) is evenly arranged around the storage cylinder (10) and drives the grinding roller (7) to rotate. The bottom of the storage cylinder (10) is provided with multiple discharge holes (11). The outer shell (1) is provided with a feed pipe (4). The discharge port of the feed pipe (4) extends to the top of the storage cylinder (10). The storage cylinder (10) is provided with a material collection mechanism that rotates intermittently and discharges material into the discharge hole (11). The material collection mechanism is located above the discharge hole (11).

2. The Raymond mill for aluminum-nickel alloy powder production according to claim 1, characterized in that: The storage cylinder (10) has a fixed lower support ring (13) at its port. The lower support ring (13) has multiple spline sleeves (15). The number of spline sleeves (15), discharge holes (11), grinding rollers (7), and plum blossom brackets (8) are matched. The spline sleeves (15) pass through the lower support ring (13) and are rotatably connected to it. A gap exists between the bottom end of the spline sleeve (15) and the discharge hole (11). The collecting mechanism is located within this gap. It includes a baffle ring (23) and a collecting blade (24). The baffle ring (23) is rotated and fixedly connected to the bottom end of the spline sleeve (15). There are multiple collecting blades (24) that are spaced around the surface of the baffle ring (23). The top end of the spline sleeve (15) is provided with multiple levers (17). The levers (17) are evenly spaced around the spline sleeve (15). Each of the plum blossom brackets (8) is provided with a push rod (28) that drives the levers (17) to rotate.

3. The Raymond mill for aluminum-nickel alloy powder production according to claim 2, characterized in that: The collecting blade (24) is arc-shaped, and the rotation direction of the collecting blade (24) is the same as the orientation of its inner arc surface.

4. A Raymond mill for aluminum-nickel alloy powder production according to claim 2, characterized in that: Below the discharge hole (11) is a guide pipe (12), which is fixedly connected to the plum blossom bracket (8). One end of the guide pipe (12) receives the material coming from the discharge hole (11), and the other end of the guide pipe (12) extends to the feed port of the grinding roller (7) and the grinding ring (6) located behind.

5. A Raymond mill for aluminum-nickel alloy powder production according to claim 4, characterized in that: The spline sleeve (15) has a matching spline shaft (14) inside. A baffle (16) is fixedly mounted on the top of the spline shaft (14). The levers (17) are evenly spaced along the circumference of the baffle (16). A spring (18) is fitted around the spline shaft (14). The spring (18) is located between the lower support ring (13) and the baffle (16). An upper fixing ring matching the lower support ring (13) is provided above the baffle (16). (19) The upper fixing ring (19) is fixedly connected to the lower support ring (13). Multiple push blocks (21) with inclined surfaces are fixedly provided on the baffle (16). The push blocks (21) are distributed in a circle. The lower surface of the upper fixing ring (19) is provided with a push rod (20) that pushes the push block (21) downward. The push rod (20) and the push block (21) are in a group of two. The push rod (20) is vertically fixedly connected to the lower surface of the upper fixing ring (19).

6. A Raymond mill for aluminum-nickel alloy powder production according to claim 5, characterized in that: The bottom end of the spline shaft (14) extends into the discharge hole (11) and periodically inserts or withdraws from the discharge hole (11).

7. A Raymond mill for aluminum-nickel alloy powder production according to claim 5, characterized in that: Multiple crushing blades (25) are fixedly provided at the bottom end of the spline shaft (14). The crushing blades (25) are fixedly connected to the spline shaft (14). The crushing blades (25) and the collecting blades (24) are alternately distributed around the spline shaft (14). The crushing blades (25) move up and down between the baffle ring (23) and the bottom surface of the storage cylinder (10).

8. A Raymond mill for aluminum-nickel alloy powder production according to claim 7, characterized in that: The crushing blade (25) includes a vertical cutting blade (26) and a horizontal partition blade (27), with the two ends of the partition blade (27) respectively abutting the adjacent collecting blade (24).

9. A Raymond mill for aluminum-nickel alloy powder production according to claim 1, characterized in that: A material distribution cone (30) is fixedly provided inside the storage cylinder (10), and the edge of the material distribution cone (30) extends toward the material collecting blade (24).

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