Iron powder grinder

Abstract

The utility model discloses a kind of iron powder grinding machines, including the grinding cylinder of two ends opening, the gear ring is sleeved and fixedly connected in one end of grinding cylinder, gear ring is engaged with a gear, gear is connected with first motor, the inside center of grinding cylinder is equipped with broken rotating shaft, the inside of grinding cylinder close to first journal bracket is equipped with support portion along radial, one end of broken rotating shaft is rotatably connected in support portion and another end passes through second journal portion, second journal bracket is rotatably connected on rotating shaft bracket after, broken rotating shaft is connected with second motor, there are several broken blades on broken rotating shaft, several turnover plates are evenly distributed on the inner wall of grinding cylinder. The device can crush iron powder material multiple times, ensure the fineness of iron powder particle size, and overall support the two ends of grinding cylinder, improve the fixed support effect of grinding cylinder, ensure the service life of broken blade on broken rotating shaft, ensure the crushing effect of iron powder material.

Description

Technical Field

[0001] This utility model relates to the field of iron powder crushing technology, and in particular to an iron powder grinding machine. Background Technology

[0002] Iron powder is an important industrial raw material in metallurgy, machining, powder metallurgy raw material preparation and related circular economy industries. Its particle size control is directly related to the performance and quality of the products.

[0003] However, existing iron powder grinding equipment (such as hammer mills) mainly achieves material crushing through impact or extrusion, resulting in fewer crushing cycles and difficulty in ensuring the fineness of the iron powder particle size. Furthermore, in existing grinding cylinder-type grinding equipment, support rings are typically installed at both ends of the grinding cylinder, with support rollers on the base that mate with the support rings. These support rollers only support the lower end of the grinding cylinder, and in actual production, the rotation of the grinding cylinder causes it to vibrate, leading to a jumping phenomenon. This jumping may cause the blades on the rotating shaft to bend or fail, affecting not only the blade's lifespan but also the crushing effect on the iron powder material. Utility Model Content

[0004] The purpose of this invention is to provide an iron powder grinding mill that can crush iron powder materials multiple times to ensure the fineness of the iron powder particle size. Furthermore, the mill provides circumferential support at both ends of the grinding cylinder, which improves the fixed support effect of the grinding cylinder, prevents the grinding cylinder from jumping, ensures the life of the crushing blades on the crushing shaft, and guarantees the crushing effect on the iron powder materials.

[0005] To achieve the above objectives, this utility model provides the following solution:

[0006] This utility model provides an iron powder grinding machine, including a grinding cylinder with openings at both ends. A gear ring is fitted and fixedly connected to one end of the grinding cylinder. The gear ring meshes with a gear, which is connected to a first motor. A first journal is fixedly connected to one end of the grinding cylinder, and a second journal is fixedly connected to the other end. One end of the first journal is fixedly connected to the opening of the grinding cylinder, and the other end of the first journal is rotatably connected to a first journal support. One end of the second journal is fixedly connected to the other opening of the grinding cylinder, and the other end of the second journal is rotatably connected to a second journal support. A crushing shaft is located at the center of the grinding cylinder. A support part is provided radially inside the grinding cylinder near the first journal bracket. One end of the crushing shaft is rotatably connected to the support part, and the other end passes through the second journal and the second journal bracket and is rotatably connected to the shaft bracket. The crushing shaft is connected to a second motor. Several crushing blades are evenly distributed on the crushing shaft. Several flaps are evenly distributed circumferentially on the inner wall of the grinding cylinder. The first journal is connected to the feed cylinder. Several discharge ports are evenly opened on the circumferential side wall of the end of the grinding cylinder near the second journal.

[0007] Preferably, the gear ring is located at the end of the grinding cylinder near the first motor, the outer wall of the gear ring is provided with a first tooth, the outer wall of the gear is provided with a second tooth, and the first tooth and the second tooth mesh with each other.

[0008] Preferably, the output end of the first motor is connected to the input end of a coupling, and the output end of the coupling is connected to a gear.

[0009] Preferably, the first journal is rotatably connected to the first journal bracket via a bearing, and the second journal is rotatably connected to the second journal bracket via a bearing.

[0010] Preferably, the support part is a support plate, and both ends of the support plate are fixed to the inner side wall of the grinding cylinder and located in the diameter direction of the grinding cylinder. One end of the crushing shaft near the first journal bracket is rotatably connected to the support plate through a bearing, and the other end of the crushing shaft is rotatably connected to the shaft bracket through a bearing. The output end of the second motor is connected to the crushing shaft.

[0011] Preferably, the first journal bracket, the second journal bracket, and the rotating shaft bracket are fixedly connected to the base plate.

[0012] Preferably, the end of the feed cylinder away from the grinding cylinder is provided with a feed inlet.

[0013] Preferably, there are 8 flaps, which are located in the radial direction of the grinding cylinder, and there is a gap between the flaps and the crushing blades.

[0014] Preferably, the crushing blade comprises several blade arrays, each blade array being uniformly fixed to the circumferential sidewall of the crushing shaft.

[0015] Preferably, the number of blade arrays is 4, 6, 8 or 10.

[0016] The present invention achieves the following beneficial technical effects compared to the prior art:

[0017] 1. The iron powder grinding mill provided by this utility model has several flaps evenly distributed circumferentially on the inner wall of the grinding cylinder, making it easier for the iron powder material after being crushed by the crushing blades to fall onto the flaps. After being cut by the crushing blades, the iron powder material in the grinding cylinder falls onto the inner wall at the bottom of the grinding cylinder. Due to the flaps on the inner wall of the grinding cylinder, the flaps will flip the iron powder up again as the grinding cylinder rotates to repeatedly cut and crush it. Due to the rotation of the grinding cylinder and the rotation of the crushing blades, the iron powder material in the grinding cylinder is repeatedly cut, resulting in a better crushing effect and ensuring the fineness of the iron powder particle size.

[0018] 2. The iron powder grinding mill provided by this utility model, when the grinding cylinder rotates, will drive the first journal and the second journal as a whole to rotate relative to the first journal support and the second journal support. The first journal support and the second journal support are respectively fixed to the base plate, so that the two ends of the grinding cylinder are circumferentially supported. Compared with the prior art that only supports the lower end of the grinding cylinder, this device improves the fixed support effect of the grinding cylinder, ensures the stability of the device, prevents the grinding cylinder from jumping, avoids the grinding cylinder from touching the crushing blades inside the grinding cylinder, avoids the bending or failure of the crushing blades, ensures the service life of the crushing blades, and at the same time ensures the crushing effect on iron powder materials. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the iron powder grinding mill in this utility model;

[0020] Figure 2 This is a structural schematic diagram of the iron powder grinding mill of this utility model from another angle;

[0021] Figure 3 This is a schematic diagram of the grinding cylinder of the iron powder grinding machine in this utility model;

[0022] Figure 4 This is a schematic diagram of the crushing shaft of the iron powder grinding mill in this utility model;

[0023] In the diagram: 1-grinding cylinder, 2-gear ring, 3-gear, 4-first tooth, 5-second tooth, 6-first motor, 7-coupling, 8-first journal, 9-second journal, 10-first journal support, 11-second journal support, 12-base plate, 13-crushing shaft, 14-crushing blade, 15-support plate, 16-shaft support, 17-second motor, 18-flip plate, 19-feed inlet, 20-discharge outlet, 21-blade array, 22-feed cylinder. Detailed Implementation

[0024] This utility model provides an iron powder grinding mill, such as Figures 1-4 As shown, the grinding cylinder 1 includes two open ends. A gear ring 2 is fitted and fixed to one end of the grinding cylinder 1, and the gear ring 2 meshes with a gear 3. Specifically, the outer wall of the gear ring 2 has a first tooth 4, and the outer wall of the gear 3 has a second tooth 5. The first tooth 4 and the second tooth 5 mesh, realizing the transmission between the gear ring 2 and the gear 3. The gear 3 is connected to a first motor 6. The gear ring 2 is located at the end of the grinding cylinder 1 closest to the first motor 6. Specifically, the output end of the first motor 6 is connected to the input end of a coupling 7, and the output end of the coupling 7 is connected to the gear 3. Therefore, when the first motor 6 starts, the rotation of the output end of the first motor 6 will drive the input end of the coupling 7 to rotate, which in turn drives the output end of the coupling 7 to rotate, which in turn drives the gear 3 to rotate. Due to the meshing of the gear 3 and the gear ring 2, the gear ring 2 is driven to rotate, which in turn drives the grinding cylinder 1 to rotate.

[0025] A first journal 8 is fixedly connected to one end of the grinding cylinder 1, and a second journal 9 is fixedly connected to the other end. One end of the first journal 8 and the second journal 9 are respectively fixedly connected to the opening of the grinding cylinder 1, so that the grinding cylinder 1, the first journal 8 and the second journal 9 are fixedly connected as a whole. Furthermore, the diameters of the first journal 8 and the second journal 9 are smaller than the diameter of the grinding cylinder 1, which reduces the overall weight of the equipment. The first journal 8 is rotatably connected to the first journal bracket 10 via a bearing, and the second journal 9 is rotatably connected to the second journal bracket 11 via a bearing. When the grinding cylinder 1 rotates, the first journal 8 and the second journal 9 will rotate as a whole relative to the first journal bracket 10 and the second journal bracket 11. The first journal bracket 10 and the second journal bracket 11 are respectively fixed to the base plate 12. This provides circumferential support to both ends of the grinding cylinder 1. Compared with the prior art, which only supports the lower end of the grinding cylinder 1, this device improves the fixed support effect of the grinding cylinder 1, ensures the stability of the device, prevents the grinding cylinder 1 from jumping, avoids the grinding cylinder 1 from possibly touching the crushing blade 14 inside the grinding cylinder 1, avoids the bending or failure of the crushing blade 14, ensures the service life of the crushing blade 14, and at the same time ensures the crushing effect on iron powder materials.

[0026] A crushing shaft 13 is located at the center of the grinding cylinder 1. Several crushing blades 14 are evenly distributed on the crushing shaft 13. A support plate 15 is radially arranged inside the grinding cylinder 1 near the first journal support 10. Both ends of the support plate 15 are fixed to the inner wall of the grinding cylinder 1 and located in the diameter direction of the grinding cylinder 1, supporting one end of the crushing shaft 13. The end of the crushing shaft 13 near the first journal support 10 is rotatably connected to the support plate 15 via a bearing. The other end of the crushing shaft 13 passes through the second journal 9 and the second journal support 11 and is rotatably connected to the shaft support 16 via a bearing. The output end of the second motor 17 is connected to the crushing shaft 13. Thus, when the second motor 17 rotates, it drives the crushing shaft 13 to rotate relative to the shaft support 16 and the support plate 15. Furthermore, the shaft support 16 is fixed to the base plate 12, ensuring the stability of the device. Therefore, when the second motor 17 starts, the rotation of the output shaft of the second motor 17 will drive the crushing shaft 13 to rotate relative to the shaft support 16 and the support plate 15, the first journal support 10 and the second journal support 11 in the grinding cylinder 1, so that the rotation of the grinding cylinder 1 and the rotation of the crushing shaft 13 can not affect each other, thereby driving the crushing blade 14 to rotate around the crushing shaft 13 in the grinding cylinder 1. The rotation of the crushing blade 14 will crush the iron powder material in the grinding cylinder 1 multiple times.

[0027] The inner wall of the grinding cylinder 1 is circumferentially distributed with several flaps 18. In this embodiment, there are eight flaps 18, and each flap 18 is located in the direction of the inner diameter of the grinding cylinder 1. There is a gap between the flaps 18 and the crushing blades 14, so that the iron powder material crushed by the crushing blades 14 can fall more easily onto the flaps 18. After being cut by the crushing blades 14, the iron powder material in the grinding cylinder 1 falls onto the inner wall at the bottom of the grinding cylinder 1. Due to the setting of the flaps 18 on the inner wall of the grinding cylinder 1, the flaps 18 will flip the iron powder up again as the grinding cylinder 1 rotates to repeatedly cut and crush it. Due to the rotation of the grinding cylinder 1 and the rotation of the crushing blades 14, the iron powder material in the grinding cylinder 1 is repeatedly cut, resulting in a better crushing effect and ensuring the fineness of the iron powder particle size.

[0028] The first journal 8 is connected to the feed cylinder 22. The feed cylinder 22 has a feed inlet 19 at the end furthest from the grinding cylinder 1. Several discharge outlets 20 are evenly distributed on the circumferential sidewall of the grinding cylinder 1 near the end of the second journal 9. Iron powder enters the grinding cylinder 1 through the feed inlet 19 and exits through the discharge outlets 20. During iron powder crushing, the feed inlet 19 is positioned higher than the discharge outlets 20 to facilitate the iron powder's movement to the discharge outlets 20 by gravity after crushing, allowing it to proceed to the next process. The crushing blades 14 include several blade arrays 21, each uniformly fixed to the circumferential sidewall of the crushing shaft 13. The number of blade arrays 21 can be 4, 6, 8, or 10. In this embodiment, 4 blade arrays 21 are used, ensuring both crushing effectiveness and cost savings.

[0029] The iron powder grinding mill provided by this utility model, in its specific application, transmits the iron powder material to be crushed into the grinding cylinder 1 through the feed inlet 19. The second motor 17 is started, causing the crushing shaft 13 to rotate, which in turn drives the crushing blades 14 to rotate. The crushing blades 14 crush the iron powder material. The first motor 6 is then started, driving the gear 3 to rotate, which in turn drives the gear ring 2 to rotate, which in turn drives the grinding cylinder 1 to rotate. This causes the grinding cylinder 1 and the crushing shaft 13 to rotate separately. After being cut by the crushing blades 14, the iron powder material in the grinding cylinder 1 falls onto the flap 18 on the inner wall at the bottom of the grinding cylinder 1. As the grinding cylinder 1 rotates, the flap 18 flips the iron powder back up for repeated cutting and crushing. This repeated cutting of the iron powder material in the grinding cylinder 1 results in better crushing effect and ensures the fineness of the iron powder particle size. Then, under continuous cutting, the crushed material moves to the discharge port 20 of the grinding cylinder 1 for the next process.

[0030] It should be noted that this iron powder grinding mill is not limited to crushing and grinding iron powder materials, but can also crush and grind other micro powder materials that need to be crushed.

[0031] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. An iron powder grinding mill, comprising a grinding cylinder open at both ends, characterized in that: A gear ring is fitted and fixed to one end of the grinding cylinder. The gear ring meshes with a gear, which is connected to a first motor. A first journal is fixed to one end of the grinding cylinder, and a second journal is fixed to the other end. One end of the first journal is fixed to the opening of the grinding cylinder, and the other end is rotatably connected to a first journal support. One end of the second journal is fixed to the other opening of the grinding cylinder, and the other end is rotatably connected to a second journal support. A crushing shaft is provided at the center of the grinding cylinder. A support part is provided radially inside the grinding cylinder near the first journal support. One end of the crushing shaft is rotatably connected to the support part, and the other end passes through the second journal and the second journal support and is rotatably connected to the shaft support. The crushing shaft is connected to a second motor. Several crushing blades are evenly distributed on the crushing shaft. Several flaps are evenly distributed circumferentially on the inner wall of the grinding cylinder. The first journal is connected to the feed cylinder. Several discharge ports are evenly opened on the circumferential side wall of the end of the grinding cylinder near the second journal.

2. The iron powder grinding mill according to claim 1, characterized in that: The gear ring is located at the end of the grinding cylinder near the first motor. The outer wall of the gear ring is provided with a first tooth, and the outer wall of the gear is provided with a second tooth. The first tooth and the second tooth mesh with each other.

3. The iron powder grinding mill according to claim 1, characterized in that: The output end of the first motor is connected to the input end of a coupling, and the output end of the coupling is connected to a gear.

4. The iron powder grinding mill according to claim 1, characterized in that: The first journal is rotatably connected to the first journal bracket via a bearing, and the second journal is rotatably connected to the second journal bracket via a bearing.

5. The iron powder grinding mill according to claim 4, characterized in that: The support part is a support plate. Both ends of the support plate are fixed to the inner side wall of the grinding cylinder and located in the diameter direction of the grinding cylinder. One end of the crushing shaft near the first journal bracket is rotatably connected to the support plate through a bearing, and the other end of the crushing shaft is rotatably connected to the shaft bracket through a bearing. The output end of the second motor is connected to the crushing shaft.

6. The iron powder grinding mill according to claim 5, characterized in that: The first journal bracket, the second journal bracket, and the rotating shaft bracket are respectively fixed to the base plate.

7. The iron powder grinding mill according to claim 1, characterized in that: The feed cylinder has a feed inlet at the end furthest from the grinding cylinder.

8. The iron powder grinding mill according to claim 1, characterized in that: The number of flaps is 8, the flaps are located in the radial direction of the grinding cylinder, and there is a gap between the flaps and the crushing blades.

9. The iron powder grinding mill according to claim 1, characterized in that: The crushing blade comprises several blade arrays, each blade array being uniformly fixed to the circumferential sidewall of the crushing shaft.

10. The iron powder grinding mill according to claim 9, characterized in that: The number of blade arrays is 4, 6, 8, or 10.

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