A graphite bullet

Abstract

The utility model provides a kind of graphite bullet head, the purpose is to solve the technical problem that only overall scrap processing can be carried out after existing graphite bullet head is used, leading to waste of not completely consumed part, increase production cost.The graphite bullet head includes first body and second body, first body has silicon core hole and first gas passage communicated with the silicon core hole, second body is detachably connected with the first body by thread structure, and second body has second gas passage coaxially arranged and communicated with the first gas passage.The utility model graphite head adopts split design, divides graphite bullet head into upper and lower two parts, realizes detachable replacement by thread connection, so as to realize on-demand replacement, reduce consumption, and thread connection facilitates quick disassembly and assembly.

Description

Technical Field

[0001] This utility model relates to the field of polycrystalline silicon production technology, and in particular to a graphite bullet. Background Technology

[0002] The graphite bullets used in the reduction process are prone to localized wear (usually with different degrees of wear on the upper and lower parts) due to prolonged exposure to high temperatures and corrosive environments. Currently, graphite bullets are typically cast as a single piece, requiring complete scrapping after use. This results in the waste of incompletely worn parts, increasing production costs. Summary of the Invention

[0003] In view of the above situation and to overcome the defects of the prior art, the purpose of this utility model is to provide a graphite bullet head, which solves the technical problem that existing graphite bullet heads are usually integrally cast, and can only be scrapped as a whole after use, resulting in the waste of the incompletely worn parts and increased production costs.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A graphite bullet includes: a first body having a silicon core hole and a first gas channel communicating with the silicon core hole; and a second body detachably connected to the first body via a threaded structure, having a second gas channel coaxially arranged and communicating with the first gas channel.

[0006] This utility model's graphite head adopts a split design, dividing the graphite bullet head into upper and lower parts, which are detachable and replaceable through threaded connection, thereby realizing replacement as needed, reducing consumption, and the threaded connection facilitates quick assembly and disassembly.

[0007] Optionally, the threaded structure includes: a connecting boss disposed on the top of the second body and a connecting groove disposed on the bottom of the first body; the outer wall of the connecting boss is provided with an external thread, and the inner wall of the connecting groove is provided with an internal thread that cooperates with the external thread.

[0008] Optionally, the external and internal threads are tapered. The tapered threads improve the stability of the connection and prevent loosening due to thermal expansion and contraction in high-temperature environments.

[0009] Optionally, both the external and internal threads are arranged in an expanding manner from top to bottom.

[0010] Optionally, the first body includes a conical segment and a vertical segment integrally arranged from top to bottom, wherein the conical segment is arranged in an expanding manner from top to bottom.

[0011] Optionally, the second body has a tapered structure that gradually expands from bottom to top. The diameter of the connecting boss is smaller than the diameter of the large end of the second body and forms an annular step. When the connecting boss is threadedly connected to the connecting groove, the end of the vertical section away from the tapered section abuts against the annular step.

[0012] Optionally, the silicon core hole has a step in the middle, and the bottom diameter of the silicon core hole is a tapered hole that gradually decreases, and the tapered hole is located on the vertical section.

[0013] Optionally, the first body has an exhaust hole on its side wall that communicates with the first gas channel, and the exhaust hole is located above the connecting groove.

[0014] Optionally, the inner diameter of the second gas channel is equal to that of the first gas channel.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] This utility model's graphite head adopts a split design, dividing the graphite bullet head into upper and lower parts, which are detachable and replaceable through threaded connection, thereby realizing replacement as needed, reducing consumption, and the threaded connection facilitates quick assembly and disassembly. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of the present invention.

[0019] Figure 2 This is an exploded structural diagram of the present invention.

[0020] Figure 3 This is a three-dimensional structural diagram of the present invention.

[0021] Figure 4 This is a three-dimensional exploded structural diagram of the present invention.

[0022] Reference numerals: 1. First body; 1a. Conical section; 1b. Vertical section; 11. Silicon core hole; 111. Conical hole; 12. First gas channel; 13. Connecting groove; 14. Internal thread; 15. Step; 16. Exhaust hole; 2. Second body; 21. Second gas channel; 22. Connecting boss; 23. External thread; 24. Annular step. Detailed Implementation

[0023] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the embodiments of this utility model application. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0024] In the description of the embodiments of this utility model application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", "end", "side" etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, are only for the convenience of describing the embodiments of this utility model application and simplifying the description, and are not intended to 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 on the embodiments of this utility model application.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of this utility model application, "multiple" means two or more, unless otherwise explicitly specified.

[0026] In the embodiments of this utility model application, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model application according to the specific circumstances.

[0027] In the embodiments of this utility model application, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0028] The following disclosure provides many different implementations or examples for carrying out different structures of the embodiments of this utility model application. To simplify the disclosure of the embodiments of this utility model application, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the embodiments of this utility model application. Furthermore, reference numerals and / or reference letters may be repeated in different examples of the embodiments of this utility model application; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various implementations and / or arrangements discussed.

[0029] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0030] like Figures 1-4 As shown in the figure, this utility model application provides a graphite bullet head, including a first body 1 and a second body 2 that are detachably connected.

[0031] The first body 1 has a silicon core hole 11 and a first gas channel 12 connected to the silicon core hole 11. The second body 2 is detachably connected to the first body 1 by a threaded structure, and the second body 2 has a second gas channel 21 that is coaxially arranged and connected to the first gas channel 12.

[0032] Furthermore, the threaded structure includes a connecting boss 22 located on the top of the second body 2 and a connecting groove 13 located on the bottom of the first body 1, which is adapted to the connecting boss 22. The outer wall of the connecting boss 22 is provided with an external thread 23, and the inner wall of the connecting groove 13 is provided with an internal thread 14 that cooperates with the external thread 23. In use, the first body 1 and the second body 2 are connected by screwing the external thread 23 of the connecting boss 22 with the internal thread 14 at the end of the first body 1. By using the split design of the graphite bullet head, only the severely worn parts can be replaced during use, which helps to reduce the material cost of the bullet head. The threaded connection facilitates quick assembly and disassembly without the need for complete disassembly of the equipment, reducing replacement time and indirectly reducing downtime costs.

[0033] Optionally, the silicon core hole 11 has a step 15 in the middle, that is, the silicon core hole 11 is a stepped hole, and the bottom diameter of the silicon core hole 11 is a tapered hole 111 that gradually decreases. The two ends of the first gas channel 12 are connected to the silicon core hole 11 and the connecting groove 13, respectively.

[0034] Optionally, the inner diameters of the first gas channel 12 and the second gas channel 21 are equal. When the first body 1 and the second body 2 are docked, the first gas channel 12 and the second gas channel 21 are docked synchronously to form a continuous flow channel.

[0035] Optionally, the side wall of the first body 1 is provided with an exhaust hole 16 that communicates with the first gas passage 12, and the exhaust hole 16 is located above the connecting groove 13.

[0036] Optionally, the first body 1 includes a tapered section 1a and a vertical section 1b integrally disposed from top to bottom. The tapered section 1a is arranged to expand from top to bottom. The silicon core hole 11 extends downward from the upper end of the tapered section 1a and its bottom is a tapered hole 111 that gradually narrows and is located on the vertical section 1b. The connecting groove 13 and the vent hole 16 are both opened on the vertical section 1b. The vent hole 16 is located above the connecting groove 13, and the diameter of the vent hole 16 is smaller than the diameter of the first gas channel 12.

[0037] In one embodiment, the external thread 23 and the internal thread 14 are tapered. Optionally, the nominal diameter of the external thread 23 near the first body 1 is smaller than the nominal diameter of the other end, meaning the external thread 23 gradually expands from top to bottom; similarly, the nominal diameter of the internal thread 14 near the second body 2 is larger than the nominal diameter of the other end, meaning the internal thread 14 gradually expands from top to bottom. Understandably, both the connecting boss 22 and the connecting groove 13 expand from top to bottom. The tapered thread fit improves the stability of the connection and prevents loosening due to thermal expansion and contraction in high-temperature environments. The external and internal threads are only schematically shown in the diagram; the thread structure can be precisely machined using a CNC lathe to ensure fitting accuracy. The thread specifications must meet the connection strength requirements at high temperatures. The specific thread type is selected as needed, preferably a fine-pitch thread to reduce stress concentration.

[0038] Furthermore, the second body 2 has a tapered structure that gradually expands from bottom to top. A connecting boss 22 is formed on the large end of the second body 2. The diameter of the connecting boss 22 is smaller than the diameter of the large end of the second body 2, and an annular step 24 is formed thereon. When the connecting boss 22 is threadedly connected to the connecting groove 13, the end of the vertical section 1b away from the tapered section 1a abuts against the annular step 24.

[0039] During use, the first body 1 or the second body 2 can be replaced depending on the wear and tear. For example, if the wear and tear of the first body 1 is twice that of the second body 2, then the split design allows for the replacement of only the severely worn parts, which is expected to reduce the material cost of a single bullet by 30%-50%. In addition, the threaded connection facilitates quick assembly and disassembly without the need for complete disassembly of the equipment, reducing replacement time and indirectly reducing downtime costs.

[0040] Any aspects not described in detail in this embodiment are techniques known in the art.

[0041] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this utility model, and these should all be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A graphite bullet, characterized in that, include: The first body (1) has a silicon core hole (11) and a first gas channel (12) connected to the silicon core hole (11). The second body (2) is detachably connected to the first body (1) via a threaded structure and has a second gas channel (21) that is coaxially arranged and connected to the first gas channel (12).

2. The graphite bullet head according to claim 1, characterized in that, The threaded structure includes: A connecting boss (22) is provided on the top of the second body (2) and a connecting groove (13) is provided on the bottom of the first body (1); The outer wall of the connecting boss (22) is provided with an external thread (23), and the inner wall of the connecting groove (13) is provided with an internal thread (14) that cooperates with the external thread (23).

3. The graphite bullet head according to claim 2, characterized in that, The external thread (23) and internal thread (14) are tapered.

4. The graphite bullet head according to claim 3, characterized in that, Both the external thread (23) and the internal thread (14) are arranged in an expanding manner from top to bottom.

5. The graphite bullet head according to claim 2, characterized in that, The first body (1) includes a conical segment (1a) and a vertical segment (1b) integrally arranged from top to bottom, wherein the conical segment (1a) is arranged in an expanding manner from top to bottom.

6. The graphite bullet head according to claim 5, characterized in that, The second body (2) has a tapered structure that gradually expands from bottom to top. The diameter of the connecting boss (22) is smaller than the diameter of the large end of the second body (2) and forms an annular step (24). When the connecting boss (22) is threadedly connected to the connecting groove (13), the end of the vertical section (1b) away from the tapered section (1a) abuts against the annular step (24).

7. The graphite bullet head according to claim 5, characterized in that, The silicon core hole (11) has a step (15) in the middle, and the bottom diameter of the silicon core hole (11) is a tapered hole (111) that gradually narrows, and the tapered hole (111) is located on the vertical section (1b).

8. The graphite bullet head according to claim 5, characterized in that, The first body (1) has an exhaust hole (16) on its side wall that communicates with the first gas channel (12), and the exhaust hole (16) is located above the connecting groove (13).

9. The graphite bullet head according to claim 1, characterized in that, The inner diameter of the second gas channel (21) is the same as that of the first gas channel (12).

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