A can mill barrel
By designing an inner and outer shell structure and a discharge hole in the mill barrel, the problem of excessively small particle size of silicon carbide powder was solved, a stable sublimation rate was achieved, and the efficiency of silicon carbide crystal preparation was improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGXIA CHUANGSHENG NEW MATERIAL TECH CO LTD
- Filing Date
- 2025-07-16
- Publication Date
- 2026-06-23
AI Technical Summary
In the existing technology, the particle size of silicon carbide powder is too small, which leads to unstable sublimation rate and affects the preparation process of silicon carbide crystals.
Design a grinding barrel comprising an inner and outer shell structure. The inner shell is provided with a grinding chamber and a discharge hole for timely discharge of powder of the target particle size to avoid over-grinding.
This effectively avoids excessively small silicon carbide powder particle size, ensures stable sublimation rate, and improves the efficiency of silicon carbide crystal preparation.
Smart Images
Figure CN224388902U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of abrasive equipment technology, and in particular to a grinding barrel. Background Technology
[0002] A grinding jar (or ball mill jar) is a key grinding container used in laboratories and industries for crushing, mixing, and homogenizing materials. It is usually used in conjunction with a horizontal grinding mill.
[0003] During the grinding of silicon carbide raw materials using a mortar and mill and a horizontal mortar mill, some silicon carbide raw materials are ground too finely. Small-particle-size silicon carbide powder exhibits a low and unstable sublimation rate during the sublimation process to prepare silicon carbide crystals. Specifically, the high packing density of small-particle-size silicon carbide powder in the crucible results in smaller channels for sublimation gas, leading to a smaller gas production and a slower sublimation rate. Furthermore, sublimation gas tends to remain trapped within the silicon carbide powder, and as the sublimation reaction proceeds, sintering occurs between the silicon carbide particles, ultimately causing the sublimation rate to gradually decrease and become unable to maintain a stable sublimation rate.
[0004] Therefore, the technical problem with the existing technology is that the particle size of some of the silicon carbide powder obtained by grinding is too small. Summary of the Invention
[0005] This application provides a grinding barrel that solves the technical problem of excessively small particle size of some silicon carbide powder obtained from grinding, thereby achieving the technical effect of avoiding excessively small particle size of silicon carbide powder obtained from grinding.
[0006] This application provides a grinding barrel, which adopts the following technical solution: It includes a barrel body, the barrel body comprising: an outer shell, the outer shell having a receiving cavity; and an inner shell, the inner shell being fixedly disposed in the receiving cavity, and a gap being maintained between the inner shell and the outer shell; wherein, the inner shell has a grinding chamber for accommodating powder to be ground, and the wall of the grinding chamber is provided with a through discharge hole, the two ends of the discharge hole being respectively connected to the grinding chamber and the receiving cavity, and the discharge hole being suitable for powder with a particle size smaller than the discharge hole in the grinding chamber to move into the receiving cavity.
[0007] Preferably, the tank body is provided with end caps at both ends, and the end caps and the outer shell are detachably connected.
[0008] Preferably, the end cap includes a first end cap and a second end cap, and the two ends of the inner shell are respectively provided with: an opening facing the first end cap and communicating with the grinding chamber; and a shell bottom facing the second end cap, with a space left between the shell bottom and the second end cap.
[0009] Preferably, the grinding barrel further includes a dividing unit, which is disposed between the bottom of the shell and the second end cap, and the dividing unit divides the accommodating cavity into a collecting section and a storage section; wherein the inner shell is located in the collecting section, and the dividing unit is provided with a feed hole that allows powder to pass through, and the two ends of the feed hole are respectively connected to the collecting section and the storage section.
[0010] Preferably, the tank is tilted, and the tilting direction of the tank from the collection section to the storage section is downward.
[0011] Preferably, the outer surface of the outer shell is provided with a first protrusion and a second protrusion, wherein the protrusion thickness of the first protrusion is higher than that of the second protrusion, so that the can is tilted when it is laid flat.
[0012] Preferably, the separating unit includes: a separating plate; wherein the feed hole is disposed through the separating plate; and a sealing ring disposed on the outer surface of the separating plate, which fills the gap between the separating plate and the cavity wall.
[0013] Preferably, the partition unit is engaged in the accommodating cavity, and the bottom of the shell abuts against the partition unit to restrict the position of the partition unit.
[0014] Preferably, the feed hole slopes downward from the side near the collection section to the side near the storage section.
[0015] Preferably, the feed hole is a spiral hole, and the spiral direction of the feed hole is the same as the rotation direction of the mill barrel.
[0016] Unlike existing technologies, the advantages of this application are: by adding an inner shell to create a gap between the grinding chamber and the receiving chamber, and by timely discharging powder with the particle size ground to the target degree (particle size ≤ discharge hole diameter) based on the discharge hole on the grinding chamber, the powder that has been ground to the target degree is avoided from being over-ground in the grinding chamber; this solves the technical problem of some silicon carbide powder with too small a particle size obtained from grinding, and achieves the technical effect of avoiding silicon carbide powder with too small a particle size obtained from grinding. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the isometric structure of the grinding barrel in this application;
[0018] Figure 2 This is a side view sectional view of the mill barrel in this application;
[0019] Figure 3 yes Figure 2 A schematic diagram of the axial orientation measuring structure;
[0020] Figure 4 yes Figure 3 Enlarged view of point A in the middle;
[0021] Figure 5 This is a side view sectional view of another type of mill barrel;
[0022] Figure 6 yes Figure 5 Enlarged view of point B in the middle.
[0023] Explanation of reference numerals in the attached figures:
[0024] 100. Tank body; 11. Outer shell; 111. Receiving cavity; 1111. Collection section; 1112. Storage section; 112. First protrusion; 113. Second protrusion; 12. Inner shell; 121. Grinding chamber; 122. Discharge hole; 123. Opening; 124. Shell bottom; 200. End cap; 200a. First end cap; 200b. Second end cap; 21. Retaining ring; 22. Sealing plate; 23. Clamping plate; 24. Pressing element; 300. Dividing unit; 31. Dividing plate; 311. Feed hole; 32. Sealing ring. Detailed Implementation
[0025] The serial numbers assigned to components in this document, such as "first" and "second," are used solely to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages). It should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are used solely for the convenience of describing this application and simplifying the description. They 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, and therefore should not be construed as a limitation of this application.
[0026] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0027] To better understand the above technical solutions, a detailed description of the technical solutions will be provided below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit the scope of this application.
[0028] The grinding in a grinding barrel relies on placing grinding stones into the powder. As the grinding barrel rotates, the grinding stones grind the powder, making the powder particles smaller.
[0029] This application provides a milling barrel, as shown in the following embodiments. Figure 1 and Figure 2 The grinding jar includes a tank body 100 and an end cap 200. The tank body 100 is divided into an outer shell 11 and an inner shell 12. The outer shell 11 has a receiving cavity 111, and the inner shell 12 is fixedly disposed in the receiving cavity 111, with a gap between the inner shell 12 and the outer shell 11. The inner shell 12 has a grinding chamber 121 for holding the powder to be ground, and the wall of the grinding chamber 121 is provided with a through discharge hole 122. The two ends of the discharge hole 122 are respectively connected to the grinding chamber 121 and the receiving cavity 111. The discharge hole 122 is used for powder with a particle size smaller than the discharge hole 122 in the grinding chamber 121 to move into the receiving cavity 111.
[0030] Regarding the inner shell 12, it should be noted that the inner shell 12 and the outer shell 11 can be a single unit, or they can be two independent components connected and fixed together, so that the outer shell 11 can drive the inner shell 12 to rotate. The discharge hole 122 provided on the inner shell 12 allows finely ground powder to move out of the grinding chamber 121, preventing the powder from being ground too finely. Therefore, the diameter of the discharge hole 122 needs to be designed to output powder ground to the desired particle size. Furthermore, the discharge hole 122 can have various shapes, such as a circular hole, a polygonal hole, or a pentagonal hole in cross-section, or an oblique hole, an arc hole, a curved hole, or a spiral hole in the length direction.
[0031] refer to Figure 2 In one embodiment, end caps 200 are respectively provided at both ends of the tank body 100, and the end caps 200 and the outer shell 11 are detachably connected. The end caps 200 are divided into a first end cap 200a and a second end cap 200b, the first end cap 200a corresponding to the first end of the tank body 100, and the second end cap 200b corresponding to the second end of the tank body 100.
[0032] refer to Figure 4Regarding the specific structure of the end cap 200, the end cap 200 includes a retaining ring 21, a sealing plate 22, a retaining plate 23, and a clamping member 24. The retaining ring 21 is fastened to the tank body 100. The sealing plate 22 seals the port of the tank body 100, while the retaining plate 23 connects the retaining ring 21 and the clamping member 24. The clamping member 24 can be spirally pressed down relative to the retaining plate 23, so that the retaining member 24 can abut against the sealing plate 22 to make the sealing plate 22 tightly seal the port of the tank body 100. The retaining ring 21 has multiple segments, and the combination of multiple segments of the retaining ring 21 allows the retaining ring 21 to connect to the tank body 100 at multiple points, strengthening the connection strength. Moreover, the multi-segment design of the retaining ring 21 facilitates the use of a snap-fit method to fix the retaining ring 21 to the tank body 100, improving the convenience of installing and removing the retaining ring 21. In addition, the connection between the retaining ring 21 and the retaining plate 23 can also be set as a snap-fit connection, which is convenient for disassembly and facilitates the transmission of force so that the clamping member 24 can be pressed tightly onto the sealing plate 22.
[0033] refer to Figure 2 and Figure 5 In one embodiment, the inner housing 12 has openings 123 and bottom 124 at both ends relative to the end caps 200 on both sides, respectively. The openings 123 face the first end cap 200 (i.e., the first end cap 200a) and communicate with the grinding chamber 121; the bottom 124 faces the second end cap 200 (i.e., the second end cap 200b), and there is a space between the bottom 124 and the second end cap 200. It is understood that the openings 123 on the inner housing 12 are used for inserting powder, and the discharge holes 122 of the inner housing 12 are used for outputting powder that meets the expected particle size.
[0034] refer to Figure 2 In one embodiment, the tank 100 is inclined, and the inclination direction of the tank 100 is downward from the collection section 1111 to the storage section 1112. (See reference...) Figure 3 In one embodiment, the outer surface of the outer shell 11 is provided with a first protrusion 112 and a second protrusion 113. The protrusion thickness of the first protrusion 112 is higher than that of the second protrusion 113, so that the tank 100 is tilted when placed flat. It is understood that the tilted setting of the tank 100 makes the powder with the expected particle size tend to move from the collection part 1111 to the storage part 1112. Specifically, the tilted structure of the tank 100 can be constructed by providing two protrusions with different thicknesses to ensure that the grinding barrel can still be placed in a tilted state after being removed from the equipment. The tilt angle is α, which prevents the pre-ground powder from flowing back from the storage part 1112 to the collection part 1111. When pouring the powder, the powder in the storage part 1112 is first discharged from the second end of the tank 100, and then the powder located in the grinding chamber 121 is discharged from the first end of the tank 100.
[0035] refer to Figure 5In one embodiment, the grinding barrel further includes a dividing unit 300, which is disposed between the bottom 124 of the shell and the second end cap 200b. The dividing unit 300 divides the accommodating cavity 111 into a collecting section 1111 and a storage section 1112. The inner shell 12 is located in the collecting section 1111, and the dividing unit 300 is provided with a feed hole 311 that allows powder to pass through. The two ends of the feed hole 311 are respectively connected to the collecting section 1111 and the storage section 1112, so that the powder in the collecting section 1111 enters the storage section 1112 through the feed hole 311.
[0036] It is understood that the dividing unit 300 has the ability to deform. The dividing unit 300 can be inserted by first bending the dividing unit 300 and then inserting it into the receiving cavity 111 from the second end of the tank 100. After being inserted into the receiving cavity 111, the dividing unit 300 unfolds it so that the dividing unit 300 divides the receiving cavity 111 into a collection section 1111 and a storage section 1112.
[0037] refer to Figure 6 In one embodiment, the separating unit 300 includes a separating plate 31 and a sealing ring 32. A feed hole 311 is disposed through the separating plate 31; the sealing ring 32 is disposed on the outer surface of the separating plate 31, filling the gap between the separating plate 31 and the cavity wall of the receiving cavity 111. It should be noted that the separating plate 31 preferably has deformability to facilitate the insertion of the separating unit 300 from the port of the tank 100. Several feed holes 311 are provided, and these feed holes 311 are circumferentially distributed on the separating plate 31, so that during the rotation of the grinding barrel, the powder ejected from the grinding chamber 121 can move along the cavity wall of the receiving cavity 111 towards the feed hole 311. The sealing ring 32 serves to ensure separation between the collecting section 1111 and the storage section 1112, preventing gaps between the separating plate 31 and the cavity wall of the receiving cavity 111.
[0038] In one embodiment, the separator 300 is engaged in the receiving cavity 111, and the bottom of the shell 124 abuts against the separator 300 to restrict its position. The bottom of the shell 124 serves as part of the grinding cavity 121 to restrict powder output, and the space between the bottom of the shell 124 and the end cap 200 at the second end is used to place the separator 300. The unidirectionally narrowing cavity shape in the receiving cavity 111 and the feature of the bottom of the shell 124 abutting against and restricting the separator 300 fix the position of the separator 300 in the receiving cavity 111, ensuring that the space of the storage section 1112 remains stable during the operation of the grinding body.
[0039] In one embodiment, the feed hole 311 slopes downwards from the side near the collection section 1111 to the side near the storage section 1112. It should be noted that the inclined design of the feed hole 311 facilitates the easy flow of powder from the collection section 1111 into the storage section 1112, while reducing the backflow of powder from the storage section 1112 back to the collection section 1111. Specifically, the feed hole 311 is a spiral hole, and the spiral direction of the feed hole 311 is the same as the rotation direction of the mill barrel. It can be understood that the above arrangement allows the powder to enter the storage section 1112 in the direction of rotation, and since the mill barrel rotates in one direction only, the powder in the storage section 1112 is unlikely to flow back against the spiral direction of the feed hole 311, ensuring that the storage section 1112 only receives powder and does not release it.
[0040] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.
[0041] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.
Claims
1. A grinding barrel, characterized in that, include: A tank (100), the tank (100) comprising: The outer casing (11) has a receiving cavity (111) inside; The inner shell (12) is fixedly disposed in the accommodating cavity (111), and a gap is maintained between the inner shell (12) and the outer shell (11); The inner shell (12) has a grinding chamber (121) for accommodating the powder to be ground, and the grinding chamber (121) has a through discharge hole (122) on its wall. The two ends of the discharge hole (122) are connected to the grinding chamber (121) and the accommodating chamber (111) respectively. The discharge hole (122) is suitable for powder with a particle size smaller than the discharge hole (122) in the grinding chamber (121) to move into the accommodating chamber (111).
2. The milling barrel according to claim 1, characterized in that, The tank body (100) is provided with end caps (200) at both ends, and the end caps (200) and the outer shell (11) are detachably connected.
3. The milling barrel according to claim 2, characterized in that, The end cap (200) includes a first end cap (200a) and a second end cap (200b), and the two ends of the inner shell (12) are respectively provided with: An opening (123) is provided, the opening (123) facing the first end cap (200a) and the opening (123) communicating with the grinding chamber (121); The bottom of the shell (124) faces the second end cap (200b), and there is a space between the bottom of the shell (124) and the second end cap (200b).
4. The milling barrel according to claim 3, characterized in that, The mill barrel also includes: A partition unit (300) is disposed between the bottom of the shell (124) and the second end cap (200b), and the partition unit (300) divides the accommodating cavity (111) into a collection part (1111) and a storage part (1112); The inner shell (12) is located in the collecting part (1111), and the dividing unit (300) is provided with a feed hole (311) that allows powder to pass through, and the two ends of the feed hole (311) are respectively connected to the collecting part (1111) and the storage part (1112).
5. The milling barrel according to claim 4, characterized in that, The tank (100) is inclined, and the inclination direction of the tank (100) is downward from the collection part (1111) to the storage part (1112).
6. The milling barrel according to claim 4, characterized in that, The outer surface of the outer shell (11) is provided with a first protrusion (112) and a second protrusion (113). The protrusion thickness of the first protrusion (112) is higher than that of the second protrusion (113), so that the can (100) is tilted when it is laid flat.
7. The milling barrel according to claim 4, characterized in that, The partition unit (300) includes: A partition plate (31); wherein the feed hole (311) is disposed through the partition plate (31); A sealing ring (32) is disposed on the outer side of the partition plate (31) and fills the gap between the partition plate (31) and the cavity wall of the accommodating cavity (111).
8. The milling barrel according to claim 4, characterized in that, The partition unit (300) is engaged in the accommodating cavity (111), and the bottom of the shell (124) abuts against the partition unit (300) to restrict the position of the partition unit (300).
9. The milling barrel according to claim 5, characterized in that, The feed hole (311) slopes downward from the side near the collection section (1111) to the side near the storage section (1112).
10. The milling barrel according to claim 5 or 9, characterized in that, The feed hole (311) is a spiral hole, and the spiral direction of the feed hole (311) is the same as the rotation direction of the mill barrel.