Electric arc powder refining device

Abstract

The utility model relates to the technical field of powder refining, in particular to an electric arc powder refining device which comprises a quartz tube, a copper rod, an electric brush and a flow guide fan. A copper rod is arranged in the center of the inner side of the quartz tube, the bottom end of the copper rod penetrates through the quartz tube, extends to the position below the quartz tube and then is movably connected with an electric brush, the outer side of the middle of the copper rod in the quartz tube is fixedly sleeved with a flow guide fan, three equal-width notches are evenly distributed in the flow guide fan along the circumference, and three inner tungsten electrodes corresponding to the notches are evenly distributed on the outer side of the copper rod along the circumference. Each inner tungsten electrode is arranged in the notch in the corresponding position; the flow guide fan is arranged in the quartz tube, the flow guide fan rotates under the action of gas to drive the inner tungsten electrode to rotate so as to be close to the outer tungsten electrode to generate electric arc and refine powder, the vortex outlet formed in the top of the quartz tube is used for collecting powder, the electric arc powder refining effect is achieved, and the device is simple in structure, convenient to use and low in cost. The energy consumption can be reduced, and the powder preparation efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of powder refining, in particular to an arc powder refining device. Background Art

[0002] Powder refinement is the process of crushing coarse particles or bulk materials into finer particles or powders. This technology is widely used in a wide range of industries, including chemical, pharmaceutical, food, and metallurgy. Powder refinement can significantly increase the surface area and reactivity of materials, thereby improving product quality and performance. This process is particularly important in powder metallurgy. Powder metallurgy uses metal powder as raw material to produce metal materials through forming and sintering, offering many significant advantages.

[0003] First, powder metallurgy materials boast high structural uniformity, avoiding the compositional segregation that can occur in traditional metallurgical processes. Second, due to the small particle size of the powder, the grain size of the sintered material is also correspondingly finer, further enhancing the material's mechanical properties and corrosion resistance. Furthermore, powder metallurgy technology enables the manufacture of complex shapes and high-precision parts, reducing material waste and improving production efficiency. These significant advantages offer broad application prospects for powder metallurgy in high-tech fields such as aerospace, automotive manufacturing, and electronics. Through continuous technological innovation and process improvements, powder metallurgy will continue to advance materials science and provide strong support for improving the performance of various industrial products.

[0004] Chinese patent CN220696927U discloses a fine grinding device for powder coatings, which relates to the field of powder coating grinding technology, including: a box body, support seats are provided on the left and right sides of the box body, a motor is fixedly connected to the right side of the support seat on the right side, a connecting frame is sleeved on the outer surface of the box body, a cover plate is provided on the top of the box body, a grinding box is provided inside the box body, a support frame 1 is fixedly connected to the inner surface of the grinding box, an annular block is fixedly connected to the left side of the grinding box, and a protrusion is fixedly connected to the outer surface of the grinding box. The utility model provides a grinding box so that the powder coating is ground for the first time by rotating the protrusion to contact the inner wall of the box. The ground powder coating enters the fixed box through the opening and the leakage groove. The crushing knife 1 on the rotating rod cooperates with the crushing knife 2 to crush the powder coating for the second time by rotating, thereby achieving powder refinement. This device has the problems of complex structure and low powder grinding efficiency. Utility Model Content

[0005] The utility model provides an arc powder refining device, which overcomes the deficiencies of the above-mentioned prior art and can effectively solve the problems of the existing powder refining device having a complex structure and low powder preparation efficiency.

[0006] In order to solve the above problems, the utility model describes an arc powder refining device, including a quartz tube, a copper rod, a brush, and a guide fan; a copper rod is provided in the center of the inner side of the quartz tube, and the bottom end of the copper rod passes through the quartz tube and extends to the bottom of the quartz tube and is movably connected to the brush, and a guide fan is fixedly sleeved on the outer side of the middle part of the copper rod in the quartz tube, and three equal-width slots are evenly distributed along the circumference of the guide fan, and three inner tungsten electrodes corresponding to the slots are evenly distributed along the circumference of the outer side of the copper rod, and each inner tungsten electrode is arranged in the slot at the corresponding position; the outer side of the quartz tube corresponding to each inner tungsten electrode position is provided with an inside-outside through-mounting hole, and an outer tungsten electrode is fixedly installed in the mounting hole; the outer side of the quartz tube corresponding to the guide fan position is provided with an inside-outside through-air inlet; and the top of the quartz tube is provided with a vortex outlet.

[0007] The above also includes a bearing, a bearing is fixed on the brush, and the outer side of the bottom of the copper rod is fixed together with the inner ring of the bearing.

[0008] The above also includes a support ring, which is fixedly installed on the upper side of the inner part of the quartz tube. A connecting hole is provided in the center of the support ring, which passes through the upper and lower parts. The upper end of the copper rod is located in the connecting hole.

[0009] The intervals between the three inner tungsten electrodes are 120°.

[0010] The above also includes a powder feeding funnel, which is provided at the air inlet.

[0011] The above also includes a DC power supply and an arc generating device, the DC power supply is connected to the arc generating device, and the arc generating device is connected to the brush and the outer tungsten electrode respectively.

[0012] The utility model arranges a guide fan in the quartz tube. The guide fan rotates under the action of gas, driving the inner tungsten electrode to rotate, so that the inner tungsten electrode approaches the outer tungsten electrode to generate an arc, and the powder is refined. The vortex outlet arranged on the top of the quartz tube is used to collect the powder, thereby achieving the effect of arc powder refinement. The device has a simple structure and is easy to use, can reduce energy consumption, and improve the efficiency of powder preparation. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The specific implementation of the present invention will be further described in detail below with reference to the accompanying drawings.

[0014] Figure 1 This is a schematic diagram of the device structure of Example 1 of the present utility model.

[0015] Figure 2 Schematic diagram of the connection structure between the copper rod and the inner tungsten electrode in the embodiment of the present utility model.

[0016] Figure 3 It is a schematic structural diagram of the vortex outlet in an embodiment of the present utility model.

[0017] Figure 4This is a schematic structural diagram of a quartz tube in an embodiment of the present utility model.

[0018] Figure 5 It is a structural schematic diagram of the guide fan in an embodiment of the utility model.

[0019] Figure 6 This is a schematic structural diagram of the support ring in an embodiment of the present utility model.

[0020] In the figure: 1-quartz tube, 2-copper rod, 3-brush, 4-guide fan, 5-slot, 6-inner tungsten electrode, 7-mounting hole, 8-outer tungsten electrode, 9-air inlet, 10-vortex outlet, 11-bearing, 12-support ring. DETAILED DESCRIPTION

[0021] The present invention is not limited by the following embodiments, and specific implementation methods can be determined based on the technical solution of the present invention and actual conditions.

[0022] The present invention will be further described below in conjunction with the embodiments and accompanying drawings:

[0023] Example 1: Figure 1-6 As shown, an arc powder refining device includes a quartz tube 1, a copper rod 2, a brush 3, and a guide fan 4; a copper rod 2 is provided in the center of the inner side of the quartz tube 1, and the bottom end of the copper rod 2 passes through the quartz tube 1 and extends to the bottom of the quartz tube 1 and is movably connected to the brush 3; a guide fan 4 is fixedly sleeved on the outer side of the middle part of the copper rod 2 in the quartz tube 1, and three equal-width slots 5 are evenly distributed along the circumference of the guide fan 4, and three inner tungsten electrodes 6 corresponding to the slots 5 are evenly distributed along the circumference of the outer side of the copper rod 2, and each inner tungsten electrode 6 is arranged in the slot 5 at the corresponding position; a mounting hole 7 that is through-through is provided on the outer side of the quartz tube 1 corresponding to the position of each inner tungsten electrode 6, and an outer tungsten electrode 8 is fixedly installed in the mounting hole 7; an air inlet 9 that is through-through is provided on the outer side of the quartz tube 1 corresponding to the position of the guide fan 4; a vortex outlet 10 is provided at the top of the quartz tube 1.

[0024] The three inner tungsten electrodes 6 are spaced 120° apart. The three inner tungsten electrodes 6 are secured by three notches 5, securing the guide fan 4 relative to the inner tungsten electrodes 6 and copper rod 2 assembly. The entire device is housed within a quartz tube 1 to prevent the escape of powder and gas. The vortex outlet 10 collects powder, and the vortex separates particles of varying sizes. The guide fan 4 guides the gas-powder mixture, rotating the inner tungsten electrodes 6 to create an arcing effect and refine the powder. The copper rod 2 secures the inner tungsten electrodes 6 and also conducts electricity. The brush 3 also conducts electricity.

[0025] During operation, the external gas cylinder generates gas, which enters the quartz tube 1 from the air inlet 9, and the powder also enters from the air inlet 9 under the influence of the gas. At the same time, the airflow drives the guide fan 4 to rotate, and further drives the inner tungsten electrode 6 and the copper rod 2 combination to rotate. During the rotation process, the inner tungsten electrode 6 and the outer tungsten electrode 8 approach each other to generate an arc, and arc starting, arc drawing and arc extinction occur, thereby achieving powder refinement.

[0026] like Figure 1 As shown, a bearing 11 is also included. The brush 3 is fixed with the bearing 11, and the outer bottom of the copper rod 2 is fixed to the inner ring of the bearing 11. Therefore, the copper rod 2 can rotate on the brush 3 through the bearing 11, preventing the copper rod 2 from rotating and driving the brush 3 to move.

[0027] like Figure 1 、 6 As shown, the quartz tube 1 further includes a support ring 12, which is fixedly mounted on the upper side of the inner portion of the quartz tube 1. A communication hole extending vertically through the center of the support ring 12 is provided, and the upper end of the copper rod 2 is positioned within the communication hole. Thus, the support ring 12 supports and secures the copper rod 2, preventing it from shifting during rotation.

[0028] As needed, a powder feeding funnel is further included, and a powder feeding funnel is provided at the air inlet 9. Thus, it is convenient for powder to enter the quartz tube 1 from the air inlet 9.

[0029] As needed, the system also includes a DC power supply and an arc generator. The DC power supply is connected to the arc generator, which is then connected to the brush 3 and the outer tungsten electrode 8, respectively. The DC power supply is 12V, and the arc generator has an arc voltage of 2kV and a frequency of 200Hz. The DC power supply is used to power the arc generator. The voltage of the DC power supply is selected to be the rated input voltage of the transformer in the arc generator, and the arc is generated by the multi-stage transformer.

[0030] Example 2: This example discloses a method for arc powder refinement, comprising the following steps:

[0031] The first step is to select fine powder;

[0032] The second step is to adjust the gas flow rate and the feeding amount of the powder feeding funnel;

[0033] The third step is to introduce protective gas, which drives the refined powder into the quartz tube 1 through the air inlet 9;

[0034] In the fourth step, the shielding gas drives the guide fan 4 to rotate, thereby driving the inner tungsten electrode 6 to rotate. The rotating inner tungsten electrode 6 and the outer tungsten electrode 8 approach each other to generate an arc, thereby refining the powder;

[0035] Step 5: Continue to introduce gas until all the powder in the tube is discharged.

[0036] Among them, the protective gas needs to be introduced into 99% argon for 2 seconds in advance, and the gas flow rate is 15L / min.

[0037] In summary, the utility model arranges a guide fan 4 in the quartz tube 1. The guide fan 4 rotates under the action of the gas, driving the inner tungsten electrode 6 to rotate, so that it approaches the outer tungsten electrode 8 to generate an arc, and the powder is refined. The vortex outlet 10 arranged at the top of the quartz tube 1 is used to collect the powder, thereby achieving the effect of arc powder refinement. In addition, the device has a simple structure, is easy to use, can reduce energy consumption, and improve the powder preparation efficiency.

Claims

1. An arc powder refining device, characterized in that: It includes a quartz tube, a copper rod, a brush, and a guide fan; a copper rod is provided in the center of the inner side of the quartz tube, the bottom end of the copper rod passes through the quartz tube and extends to the bottom of the quartz tube and is movably connected to a brush; a guide fan is fixedly sleeved on the outer side of the middle part of the copper rod in the quartz tube, and three slots of equal width are evenly distributed along the circumference of the guide fan; three inner tungsten electrodes corresponding to the slots are evenly distributed along the circumference of the outer side of the copper rod, and each inner tungsten electrode is arranged in the slot at the corresponding position; a mounting hole that passes through inside and outside is provided on the outer side of the quartz tube corresponding to the position of each inner tungsten electrode, and an outer tungsten electrode is fixedly installed in the mounting hole; an air inlet that passes through inside and outside is provided on the outer side of the quartz tube corresponding to the position of the guide fan; a vortex outlet is provided on the top of the quartz tube.

2. The arc powder refining device according to claim 1, characterized in that: It also includes a bearing, which is fixed on the brush, and the outer side of the bottom of the copper rod is fixed to the inner ring of the bearing.

3. The arc powder refining device according to claim 1, characterized in that: It also includes a support ring, which is fixedly installed on the upper side of the inner part of the quartz tube. A connecting hole is provided in the center of the support ring, which passes through the upper and lower parts. The upper end of the copper rod is located in the connecting hole.

4. The arc powder refining device according to claim 1, characterized in that: The spacing between the three inner tungsten electrodes is 120°.

5. The arc powder refining device according to claim 1, characterized in that: It also includes a powder feeding funnel, which is arranged at the air inlet.

6. The arc powder refining device according to claim 1, characterized in that: It also includes a DC power supply and an arc generating device. The DC power supply is connected to the arc generating device, and the arc generating device is respectively connected to the brush and the outer tungsten electrode.

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