Metal powder preparation system

Abstract

The utility model discloses a metal powder preparation system which comprises a material mixer, a ball mill, an intermediate material tank, a powder shaping device, a grading sieving device and a material storage device, the ball mill and the middle material tank are further connected with a circulation loop, the circulation loop comprises an air source, a plurality of blowing pipes and a circulation pipe, an air outlet of the air source is connected with the blowing pipes, the other ends of the blowing pipes are communicated with the middle material tank, one end of the circulation pipe is communicated with the middle material tank, and the other end of the circulation pipe is communicated with the ball mill. The material storage device comprises a first material tank, a second material tank and a third material tank, the first material tank, the second material tank and the third material tank are respectively connected with a material tank discharge pipe, the middle material tank is connected with the ball mill through the circulation loop, and in the ball milling process, powder is circulated for multiple times, so that the powder is fully ball-milled, and the powder is ensured to be ball-milled more uniformly; and the ball-milled powder is shaped and graded, so that the shape is more regular, the size is more concentrated, and the fluidity is good.

Description

Technical Field

[0001] The utility model relates to the technical field of powder preparation, in particular to a metal powder preparation system. Background Art

[0002] The nano-carbon reinforced metal matrix composite material has excellent comprehensive properties such as high modulus, high strength and toughness, and good processing performance, and has broad application prospects in the lightweight and high mobility of high-precision and sophisticated equipment. At present, the traditional preparation method of nano-reinforced metal matrix composite materials has low efficiency and certain limitations on the material specifications, shapes, etc. 3D printing is a manufacturing and forming technology with high efficiency, high precision and high raw material utilization rate, but it has high requirements for powders. In addition to having good plasticity, the 3D printing metal powder must also meet the requirements of small powder particle size, narrow particle size distribution, high sphericity, good fluidity and high loose bulk density. Nano-carbon reinforced metal powder is usually obtained by ball milling, but after ball milling and granulation, the particle shape is irregular and the fluidity cannot meet the requirements of 3D printing, or some particle sizes are too large to be used, resulting in waste of materials. Content of the Utility Model

[0003] To solve the above technical problems, the utility model provides a metal powder preparation system, which includes a mixer, a ball mill, an intermediate storage tank, a powder shaping device, a classification and sieving device and a storage device; a circulation loop is also connected to the ball mill and the intermediate storage tank.

[0004] Preferably: The circulation loop includes a gas source, a blowing pipe and a circulation pipe, and the air outlet of the gas source is connected to the blowing pipe.

[0005] Preferably: A plurality of blowing pipes are provided, and the other ends of the plurality of blowing pipes communicate with the intermediate storage tank.

[0006] Preferably: One end of the circulation pipe communicates with the intermediate storage tank, and the other end of the circulation pipe communicates with the ball mill.

[0007] Preferably: The storage device includes a first storage tank, a second storage tank and a third storage tank, and the first storage tank, the second storage tank and the third storage tank are respectively connected to the storage tank discharge pipes.

[0008] Preferably: The third storage tank is also connected with a reflux pipe, and the other end of the reflux pipe is connected to the feed inlet of the elevator.

[0009] Preferably: The reflux pipe and the storage tank discharge pipe are connected to the third storage tank through a three-way valve.

[0010] Preferably: The discharge outlet of the elevator is connected to the elevator discharge pipe, and the other end of the elevator discharge pipe is connected to the feed inlet of the powder shaping device.

[0011] Preferably, the ball mill includes a ball mill discharge port, and the ball mill discharge port is connected to the feed port of the intermediate storage tank through a pipeline.

[0012] Preferably, the discharge port of the intermediate storage tank is connected to the feed port of the powder shaping device through an intermediate storage tank discharge pipe.

[0013] The technical effects and advantages of the present utility model:

[0014] In the present utility model, the intermediate storage tank is connected to the ball mill through a circulation loop. During the ball milling process, the powder passes through multiple cycles, enabling the powder to be fully ball milled, thereby ensuring more uniform ball milling of the powder; the ball milled powder is then shaped and classified, with a more regular shape, more concentrated size, and good fluidity. Description of the Drawings

[0015] Figure 1 is a schematic structural diagram of a metal powder preparation system provided by an embodiment of the present application;

[0016] Figure 2 is a schematic structural diagram of the circulation loop in the metal powder preparation system provided by an embodiment of the present application.

[0017] In the figure: 1, mixer; 2, ball mill; 21, ball mill discharge port; 3, intermediate storage tank; 31, intermediate storage tank discharge pipe; 4, powder shaping device; 5, grading and sieving device; 6, storage device; 61, first storage tank; 62, second storage tank; 63, third storage tank; 64, return pipe; 65, three-way valve; 66, storage tank discharge pipe; 7, circulation loop; 71, gas source; 72, blowing pipe; 73, circulation pipe; 8, elevator; 81, elevator discharge pipe. Detailed Embodiments

[0018] The present utility model will be further described in detail below in conjunction with the drawings and specific embodiments. The embodiments of the present utility model are given for the purpose of illustration and description, and are not exhaustive or limited to the disclosed form. Many modifications and variations will be obvious to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present utility model, and enable those of ordinary skill in the art to understand the present utility model and thus design various embodiments with various modifications suitable for specific purposes.

[0019] Please refer to Figure 1, in this embodiment, a metal powder preparation system is provided, which includes a mixer 1, a ball mill 2, an intermediate storage tank 3, a powder shaping device 4, a classification and sieving device 5, and a storage device 6. The ball mill 2 and the intermediate storage tank 3 are also connected with a circulation loop 7. The storage device 6 includes a first storage tank 61, a second storage tank 62, and a third storage tank 63. After the powder is mixed in the mixer 1, it enters the ball mill 2 for grinding. During the ball milling process, it circulates through the circulation loop 7 multiple times, enabling the powder to be fully ball milled, thus ensuring more uniform ball milling of the powder. After ball milling, the powder is shaped by the powder shaping device 4 and then screened by the classification and sieving device 5. After classification, the powder meeting the requirements enters the second storage tank 62, the large particles not meeting the requirements enter the third storage tank 63, and the fine corner powder enters the first storage tank 61. The powder from the third storage tank 63 returns to the powder shaping device 4 for reshaping and classification again.

[0020] In this embodiment, the ball mill 2 is a vertical ball mill.

[0021] Furthermore, the first storage tank 61, the second storage tank 62, and the third storage tank 63 are respectively connected with a storage tank discharge pipe 66. By opening the storage tank discharge pipe 66, the powder in the first storage tank 61, the second storage tank 62, and the third storage tank 63 can be discharged respectively.

[0022] Furthermore, the third storage tank 63 is also connected with a reflux pipe 64. The reflux pipe 64 and the storage tank discharge pipe 66 are connected to the third storage tank 63 through a three-way valve 65. The other end of the reflux pipe 64 is connected to the feed inlet of a hoist 8. The discharge outlet of the hoist 8 is connected with a hoist discharge pipe 81. The other end of the hoist discharge pipe 81 is connected to the feed inlet of the powder shaping device 4. Through this design, the large particles not meeting the requirements in the third storage tank 63 return to the powder shaping device 4 for reshaping again, avoiding waste of large particle materials, and thus improving the utilization rate of materials.

[0023] In this embodiment, the ball mill 2 includes a ball mill discharge port 21. The ball mill discharge port 21 is connected to the feed inlet of the intermediate storage tank 3 through a pipeline, enabling the powder in the ball mill 2 to enter the intermediate storage tank 3.

[0024] Furthermore, the discharge outlet of the intermediate storage tank 3 is connected to the feed inlet of the powder shaping device 4 through an intermediate storage tank discharge pipe 31.

[0025] Refer to Figure 2 As shown, in this embodiment, the circulation loop 7 includes a gas source 71, a blowing pipe 72, and a circulation pipe 73. The gas outlet of the gas source 71 is connected to the blowing pipe 72. There are multiple blowing pipes 72, and the other ends of the multiple blowing pipes 72 are connected to the intermediate storage tank 3. Starting the gas source 71 conveys gas into the intermediate storage tank 3 through the blowing pipe 72.

[0026] Furthermore, one end of the circulation pipe 73 is connected to the intermediate storage tank 3, and the other end of the circulation pipe 73 is connected to the ball mill 2. The air flow enters the ball mill 2 from the intermediate storage tank 3 through the circulation pipe 73, and the powder is circulated by the air flow, avoiding some powders being unable to be ball milled due to being in the dead corners of the ball mill 2, thereby ensuring that the powder is ball milled more evenly.

[0027] The working principle of the present utility model is as follows:

[0028] The intermediate storage tank is connected to the ball mill through a circulation loop. During the ball milling process, the powder undergoes multiple circulations, enabling the powder to be fully ball milled, thereby ensuring that the powder is ball milled more evenly; the ball milled powder is then shaped and classified, making the shape more regular, the size more concentrated, and the fluidity better.

[0029] Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art and related fields based on the embodiments in the present utility model without creative efforts shall fall within the protection scope of the present utility model. The structures, devices, and operation methods not specifically described and explained in the present utility model shall be implemented according to the conventional means in the art without special instructions and limitations.

Claims

1. A metal powder preparation system, characterized in that: The invention comprises a mixer (1), a ball mill (2), an intermediate material tank (3), a powder shaping device (4), a grading and screening device (5) and a material storage device (6); the ball mill (2) and the intermediate material tank (3) are also connected to a circulation loop (7).

2. A metal powder preparation system according to claim 1, characterized in that: The circulation loop (7) comprises an air source (71), a blowing pipe (72) and a circulation pipe (73), and the air outlet of the air source (71) is connected to the blowing pipe (72).

3. A metal powder preparation system according to claim 2, characterized in that: A plurality of the blowing pipes (72) are provided, and the other ends of the plurality of blowing pipes (72) are connected to the intermediate material tank (3).

4. A metal powder preparation system according to claim 3, characterized in that: One end of the circulation pipe (73) is connected to the intermediate material tank (3), and the other end of the circulation pipe (73) is connected to the ball mill (2).

5. A metal powder preparation system according to claim 1, characterized in that: The material storage device (6) comprises a first material tank (61), a second material tank (62) and a third material tank (63), and the first material tank (61), the second material tank (62) and the third material tank (63) are respectively connected to material tank discharge pipes (66).

6. A metal powder preparation system according to claim 5, characterized in that: The third material tank (63) is also connected to a reflux pipe (64), and the other end of the reflux pipe (64) is connected to the feed port of the elevator (8).

7. A metal powder preparation system according to claim 6, characterized in that: The reflux pipe (64) and the material tank discharge pipe (66) are connected to the third material tank (63) via a three-way valve (65).

8. A metal powder preparation system according to claim 6, characterized in that: The discharge port of the elevator (8) is connected to the elevator discharge pipe (81), and the other end of the elevator discharge pipe (81) is connected to the feed port of the powder shaping device (4).

9. A metal powder preparation system according to claim 1, characterized in that: The ball mill (2) comprises a ball mill discharge port (21), and the ball mill discharge port (21) is connected to the feed port of the intermediate material tank (3) through a pipeline.

10. The metal powder preparation system according to claim 1, characterized in that: The discharge port of the intermediate material tank (3) is connected to the feed port of the powder shaping device (4) via the intermediate material tank discharge pipe (31).

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