Graphite powder purification tool

Abstract

The graphite powder purification tool comprises a crucible, a gas distribution disc and a limiting structure, the lower portion of a crucible cavity of the crucible is a reaction area, the upper portion of the crucible cavity of the crucible is a settlement area with the large inner diameter, the top of the crucible is provided with a crucible cover with a gas outlet hole, the bottom of the crucible is provided with a bottom plate with a gas inlet hole, and the gas distribution disc is arranged in the crucible cavity in a sealed mode and is close to the bottom plate. A preset gas distribution gap is kept between the gas distribution disc and the bottom plate, a plurality of gas distribution holes are evenly formed in the gas distribution disc, a gas cap is installed at each gas distribution hole, a gas flow hole is formed in the circumferential side wall of each gas cap, the limiting structure is used for limiting the gas caps, and when gas enters the gas inlet holes, gas sequentially passes through the gas distribution gaps and the gas distribution holes to eject the gas caps away from the gas distribution holes. Gas flows into the crucible cavity from the gas flow hole, when gas does not enter the gas inlet hole, the gas cap automatically falls under the action of self weight to block the gas distribution hole, and the gas flow hole is blocked by the limiting structure. According to the graphite powder purification tool, graphite powder can be evenly dispersed through airflow, full contact is achieved for reaction, and the purification effect is good.

Description

Technical Field

[0001] This utility model relates to the technical field of graphite powder processing equipment, and in particular to graphite powder purification tooling. Background Technology

[0002] In the existing technology, most graphite powder purification equipment is an open equipment. Because the graphite powder particles are small, when the gas enters from the air inlet at the bottom of the equipment, it is easily suspended under the disturbance of the high temperature airflow and escapes with the airflow, resulting in waste of raw materials.

[0003] Furthermore, the rapidly flowing purified gas can generally only react with the surface graphite powder, making it difficult to remove impurities inside the graphite powder. This results in poor consistency in the final product quality and the easy emission of unreacted gas, which not only wastes resources but also increases the difficulty of exhaust gas treatment. Utility Model Content

[0004] This application provides a graphite powder purification apparatus that can disperse graphite powder evenly through airflow, thereby ensuring sufficient contact for reaction and improving the consistency of the overall purification effect.

[0005] This application provides a graphite powder purification apparatus, including a crucible, a gas distribution plate, and a limiting structure. The crucible has a crucible cavity extending vertically. The lower part of the crucible cavity is a reaction zone, and the upper part of the crucible cavity is a settling zone. The inner diameter of the settling zone is larger than the inner diameter of the reaction zone. The top of the crucible is provided with a crucible cover with an exhaust port, and the bottom of the crucible is provided with a bottom plate with an inlet port. The gas distribution plate is sealed inside the crucible cavity, close to the bottom plate, and maintains a predetermined gas distribution distance between itself and the bottom plate. The gas distribution plate has a plurality of gas distribution holes evenly distributed on it, and a gas cap is installed at each gas distribution hole. The gas cap has an airflow hole on its circumferential sidewall. The limiting structure is used to limit the gas cap. When gas enters through the gas inlet, the gas passes through the gas distribution gap and the gas distribution hole in sequence, pushing the gas cap away from the gas distribution hole. The gas flows into the crucible cavity through the airflow hole. When no gas enters through the gas inlet, the gas cap automatically falls and blocks the gas distribution hole under its own weight, and the airflow hole is blocked by the limiting structure.

[0006] In one possible implementation, the limiting structure includes a first annular step, a second annular step, and a limiting plate. The air distribution plate extends integrally upward from the side wall of the air distribution hole and is provided with an air distribution channel. The first annular step is located on the outer side wall of the top of the air distribution channel, and the second annular step is located on the inner side wall of the bottom of the air cap and abuts against the air distribution channel below the first annular step. The limiting plate is parallel to the air distribution plate and has a guide channel in the vertical direction that cooperates with the circumferential side wall of the air cap.

[0007] In one possible implementation, the first annular step is an integral annular structure, or the first annular step is composed of multiple limiting protrusions, which are evenly distributed circumferentially on the outer side wall of the top of the gas distribution channel.

[0008] In one possible implementation, the limiting disk is an integral disk-shaped structure, or the limiting disk includes annular disks that respectively cooperate with the gas cap and a connecting frame connecting the annular disks and the crucible.

[0009] In one possible implementation, a reflux ramp area is further provided between the settling zone and the reaction zone, and the diameter of the settling zone is 1.3-2 times the diameter of the reaction zone.

[0010] In one possible implementation, the top of the air cap is ellipsoidal, and the angle between the center line of the airflow hole and the horizontal direction is 5-15°.

[0011] In one possible implementation, the vent is a frustoconical through-hole.

[0012] In one possible implementation, the bottom opening size of the vent is 10-20 mm, and the top opening size of the vent is 1.5-2 times the bottom opening size.

[0013] Beneficial effects: Compared with the prior art, the graphite powder purification fixture provided in this application, on the one hand, designs the crucible cavity as a reaction zone and a settling zone, with the diameter of the settling zone being larger than that of the reaction zone, so that the powder rising with the airflow will naturally settle, thereby reducing the escape of powder. On the other hand, by setting a gas distribution plate, gas cap and limiting structure at the bottom of the crucible cavity, the gas entering through the air inlet can be evenly distributed throughout the crucible cavity through the gas distribution gap and gas distribution hole, thereby enhancing the mixing effect of gas and graphite powder and improving the consistency of the overall purification effect of graphite powder.

[0014] These and other objects, features and advantages of this utility model will be fully realized through the following detailed description. Attached Figure Description

[0015] Figure 1 A three-dimensional structural schematic diagram of the graphite powder purification tooling of this application is shown.

[0016] Figure 2 A cross-sectional view of the graphite powder purification apparatus of this application is shown.

[0017] Figure 3 This application shows Figure 2 A magnified structural diagram of part A in the middle.

[0018] Figure 4 A partial three-dimensional structural schematic diagram of the graphite powder purification tooling of this application is shown.

[0019] Figure 5 This application shows Figure 4 A schematic diagram of the enlarged explosion structure of section B. Detailed Implementation

[0020] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. The basic principles of the present invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0021] Those skilled in the art should understand that, in the disclosure of this specification, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on this utility model.

[0022] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0023] refer to Figures 1 to 5This application provides a graphite powder purification apparatus, including a crucible 10, a gas distribution plate 20, and a limiting structure. The crucible 10 has a crucible cavity 101 extending vertically. The lower part of the crucible cavity 101 is a reaction zone 11, where most of the purification gas reacts with the graphite powder within the crucible cavity 101. The upper part of the crucible cavity 101 is a settling zone 12, and the inner diameter of the settling zone 12 is larger than the inner diameter of the reaction zone 11. For example, the inner diameter or diameter of the settling zone 12 is 600-900 mm, while the diameter of the settling zone 12 is 1.3-2 times the diameter of the reaction zone 11. This allows the graphite powder rising with the gas flow to naturally descend after reaching the settling zone, reducing powder escape. The top of the crucible 10 is provided with a crucible lid 30 with a vent 301 for gas venting. The crucible 10 has a bottom plate 40 with an air inlet 401 at its bottom, through which purified gas is introduced into the crucible cavity 101. The gas distribution plate 20 is sealed inside the crucible cavity 101 and close to the bottom plate 40. At the same time, the gas distribution plate 20 and the bottom plate 40 maintain a predetermined gas distribution gap 201. In addition, the gas distribution plate 20 is evenly provided with a plurality of gas distribution holes 202, and each gas distribution hole 202 is equipped with a gas cap 50, wherein the gas cap 50 has an air flow hole 501 on its circumferential sidewall. The limiting structure is used to limit the gas cap 50. When gas enters through the air inlet 401, the gas passes through the gas distribution gap 201 and the gas distribution hole 202 in sequence, pushing the gas cap 50 away from the gas distribution hole 202. Then the gas flows into the crucible cavity 101 through the air flow hole 501. When no gas enters through the air inlet 401, the gas cap 50 automatically falls and blocks the gas distribution hole 202 under its own weight, and the air flow hole 501 is blocked by the limiting structure.

[0024] Therefore, the graphite powder purification apparatus provided in this application, on the one hand, sets the crucible cavity 101 as a reaction zone 11 with a smaller inner diameter and a settling zone 12 with a larger inner diameter, so that the graphite powder rising with the airflow can naturally descend in the settling zone 12, reducing the amount of powder escaping from the vent 301, thus saving resources and reducing costs; on the other hand, by setting a gas distribution plate 20 and a gas cap 50 at the bottom of the crucible cavity 101, a gas distribution gap 201 is formed between the gas distribution plate 20 and the bottom plate 40, and the gas distribution plate 20 is provided with a gas distribution hole 202 and the gas cap 50 The gas cap 50 is provided with an airflow hole 501, which allows the gas to be dispersed in the gas distribution gap 201 first, and then evenly distributed into the crucible cavity 101 through the gas distribution hole 202 and the airflow hole 501. This can enhance the mixing effect of gas and powder, thereby improving the consistency of the overall purification effect of graphite powder. When there is no gas flow, the gas cap 50 will automatically fall under its own weight to block the gas distribution hole 202 and the airflow hole 501. This can also prevent the graphite powder in the crucible 10 from entering the gas distribution gap 201, affecting the gas intake and reducing the yield.

[0025] In one embodiment, the limiting structure includes a first annular step 61, a second annular step 62, and a limiting plate 63. The air distribution plate 20 extends integrally upward from the sidewall of the air distribution hole 202, forming an air distribution channel 21. The first annular step 61 is located on the outer sidewall of the top of the air distribution channel 21, and the second annular step 62 is located on the inner sidewall of the bottom of the air cap 50, abutting against the air distribution channel 21 below the first annular step 61. The limiting plate 63 is parallel to the air distribution plate 20 and has a guide channel 601 vertically aligned with the circumferential sidewall of the air cap 50. Thus, the air distribution channel 21 extends upward from the sidewall of the air distribution hole 202, forming an air distribution channel 21. The cooperation between the gas channel 21 and the first annular step 61 ensures that the gas cap 50 can be directionally lifted by the air intake and moved away from the gas distribution plate 20, so that the second annular step 62 abuts against the bottom of the first annular step 61. At this time, the air flow hole 501 is no longer blocked by the limiting plate 63 and is exposed. Gas can flow into the crucible cavity 101 through the gas distribution gap 201, the gas distribution hole 202, and the air flow hole 501. When there is no gas flow, the gas cap 50 automatically falls back to its original position due to its own weight, blocking the gas distribution hole 202. At the same time, the limiting plate 63 blocks the air flow hole 501, completely disconnecting the connection between the crucible cavity 101 and the gas distribution gap 201, so that the graphite powder in the crucible cavity 101 cannot enter the gas distribution gap 201 and reduce the yield. The limiting plate 63, through the guide channel 601, can not only be used to block the air flow hole 501, but also play a guiding role on the outer circumference of the gas cap 50. Thus, the gas cap 50 has guiding and limiting on both the outer and inner sides, and the directional movement stability is better.

[0026] In one embodiment, the first annular step 61 is an integral annular structure with good structural stability. Alternatively, the first annular step 61 is composed of multiple limiting protrusions, which are evenly distributed circumferentially on the outer side wall of the top of the gas distribution channel 21, thus saving raw materials.

[0027] In one embodiment, the limiting disk 63 is an integral disk-shaped structure with good structural stability. Alternatively, the limiting disk 63 includes multiple annular disks that respectively cooperate with the gas cap 50, and a connecting frame connecting the multiple annular disks and the annular disks and the crucible 10. It can also guide and limit the gas cap 50, and can block the airflow holes 501 on the gas cap 50 through the annular disks, while also reducing the weight of the equipment to a certain extent.

[0028] In one embodiment, a reflux slope 13 is provided between the settling zone 12 and the reaction zone 11 to serve as a transition. The top of the reflux slope 13 is connected to the bottom of the settling zone 12, and the inner diameters of the two are equal. The bottom of the reflux slope 13 is connected to the top of the reaction zone 11, and the inner diameters of the two are equal. This allows the graphite powder that naturally settles in the settling zone 12 to flow back to the reaction zone 11 along the reflux slope 13.

[0029] In one embodiment, the top of the gas cap 50 is ellipsoidal, and the angle between the center line of the airflow hole 501 and the horizontal direction is 5-15°. This reduces the lifting resistance of the gas cap 50, ensuring that the gas in the gas distribution gap 201 can more smoothly enter the crucible 10 through the airflow hole 501. Simultaneously, when ventilating, it also provides upward lift to the graphite powder, enhancing the powder mixing effect. Preferably, the diameter of the gas cap 50 is 20-60 mm, the spacing between adjacent gas caps 50 is 80-140 mm, and the number of gas caps 50 on the gas distribution plate 20, i.e., the number of gas distribution holes 202, is 30-60. The diameter of the airflow hole 501 is 1-5 mm.

[0030] In one embodiment, the vent 301 is a frustoconical through hole, which can prevent the purified gas in the crucible 10 from escaping too quickly, prolong the contact reaction time between the purified gas and the material inside the crucible 10, and allow the gas to diffuse better after escaping through the vent 301, thereby reducing the backflow of impurity gas and helping to improve the purity of the material.

[0031] Preferably, the bottom opening size of the air outlet 301 is 10-20mm, and the top opening size of the air outlet 301 is 1.5-2 times the bottom opening size.

[0032] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The advantages of the present invention have been fully and effectively realized. The functions and structural principles of the present invention have been shown and explained in the embodiments, and any modifications or variations may be made to the implementation of the present invention without departing from the stated principles.

Claims

1. A graphite powder purification apparatus, characterized in that, The device includes a crucible, a gas distribution plate, and a limiting structure. The crucible has a crucible cavity extending vertically. The lower part of the crucible cavity is a reaction zone, and the upper part is a settling zone. The inner diameter of the settling zone is larger than the inner diameter of the reaction zone. The top of the crucible is provided with a crucible cover with a gas outlet, and the bottom of the crucible is provided with a bottom plate with a gas inlet. The gas distribution plate is sealed inside the crucible cavity, close to the bottom plate, and maintains a predetermined gas distribution gap with the bottom plate. Multiple gas distribution holes are evenly distributed, and a gas cap is installed at each gas distribution hole. The gas cap has an air flow hole on its circumferential sidewall. The limiting structure is used to limit the gas cap. When gas enters through the gas inlet, the gas passes through the gas distribution gap and the gas distribution hole in sequence, pushing the gas cap away from the gas distribution hole. The gas flows into the crucible cavity through the air flow hole. When no gas enters through the gas inlet, the gas cap automatically falls and blocks the gas distribution hole under its own weight, and the air flow hole is blocked by the limiting structure.

2. The graphite powder purification apparatus as described in claim 1, characterized in that, The limiting structure includes a first annular step, a second annular step, and a limiting plate. The air distribution plate extends integrally upward from the side wall of the air distribution hole and has an air distribution channel. The first annular step is located on the outer side wall of the top of the air distribution channel, and the second annular step is located on the inner side wall of the bottom of the air cap and abuts against the air distribution channel below the first annular step. The limiting plate is parallel to the air distribution plate and has a guide channel in the vertical direction that cooperates with the circumferential side wall of the air cap.

3. The graphite powder purification apparatus as described in claim 2, characterized in that, The first annular step is an integral annular structure, or the first annular step is composed of multiple limiting protrusions, and the multiple limiting protrusions are evenly distributed circumferentially on the outer wall of the top of the gas distribution channel.

4. The graphite powder purification apparatus as described in claim 2, characterized in that, The limiting plate is an integral disc-shaped structure, or the limiting plate includes annular discs that respectively cooperate with the gas cap and a connecting frame connecting the annular discs and the crucible.

5. The graphite powder purification apparatus as described in claim 1, characterized in that, A reflux slope area is also provided between the settling zone and the reaction zone, and the diameter of the settling zone is 1.3-2 times the diameter of the reaction zone.

6. The graphite powder purification apparatus as described in claim 1, characterized in that, The top of the air cap is ellipsoidal, and the angle between the center line of the airflow hole and the horizontal direction is 5-15°.

7. The graphite powder purification apparatus as described in claim 1, characterized in that, The vent is a frustoconical through-hole.

8. The graphite powder purification apparatus as described in claim 7, characterized in that, The bottom opening size of the air outlet is 10-20mm, and the top opening size of the air outlet is 1.5-2 times the bottom opening size.

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