Graphite thermal field splicing positioning ring

Abstract

This utility model belongs to the field of graphite hot field technology, specifically relating to a graphite hot field splicing positioning ring, including a base splicing ring. Several supporting brackets are evenly spliced ​​on the outer ring of the base splicing ring. One end of each supporting bracket extends into the inner ring towards the center of the base splicing ring, while the other end extends radially outward away from the base splicing ring. A clearance-fitting support ring is fitted onto the outer ring of each supporting bracket to lock it in place. By using the base splicing ring as a base to evenly distribute multiple supporting brackets to form a crucible support structure, not only is the force balanced among the components, but direct contact with the crucible is also greatly reduced, avoiding the problem of the positioning ring transferring a large amount of crucible temperature and affecting the heating effect. The positioning ring is assembled from a few components, and the disassembled parts occupy less space, making it easier to transport. The assembly process requires no tools or connectors, and workers can install it by hand.

Description

Technical Field

[0001] This utility model belongs to the field of graphite thermal field technology, specifically relating to a graphite thermal field splicing positioning ring. Background Technology

[0002] Graphite thermal fields are an important component in the manufacture of single-crystal silicon. Their function is to convert electrical energy into heat energy to melt the silicon material and maintain the single crystal growth at a specific temperature. Graphite thermal fields are typically made of graphite, which possesses high thermal conductivity, high heat resistance, and high chemical stability, making them suitable for use in high-temperature, high-vacuum environments.

[0003] The graphite thermal field heat shield positioning ring disclosed in patent CN217351611U includes a positioning ring body. A sleeve groove is formed on one side of the positioning ring body, and an installation ring is sleeved on the outer surface of the sleeve groove. A protective ring is fixedly connected to the inner wall of the installation ring. The advantages of this invention are: by providing a protective ring at the bottom of the positioning ring body, the positioning ring body is isolated from the working surface; the waterproof layer provides good waterproofing to the protective ring, thus preventing moisture from affecting the bottom of the positioning ring body; and the first and second buffer layers provide good cushioning performance to the protective ring, greatly preventing external vibrations from affecting the positioning ring body. Compared to existing positioning rings, this invention adds a protective structure, greatly minimizing the impact of external factors on the positioning ring body and ensuring its service life.

[0004] In the above scheme, the service life of the positioning ring is improved by the protective ring. However, the upper side of the positioning ring is used to support the lower side of the graphite crucible and connect it to the central axis. A part of the central axis extends beyond the heat insulation area. In this way, the heat conduction through the central axis will cause the temperature of the positioning ring to drop, which will interfere with the temperature inside the graphite crucible and cause uncontrollable effects on the crystal heating process. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned problems by providing a graphite thermal field splicing positioning ring that can solve the above-mentioned technical issues.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A graphite thermal field splicing positioning ring includes a base splicing ring. Several support brackets are evenly spliced ​​on the outer ring of the base splicing ring. One end of each support bracket extends into the inner ring towards the center of the base splicing ring, and the other end of each support bracket extends radially outward away from the base splicing ring. A clearance-fitted support ring is fitted on the outer ring of each support bracket to lock the support bracket onto the outer ring.

[0008] In the graphite thermal field splicing positioning ring, the supporting bracket includes a positioning triangle and an outward rod connected to one end of the positioning triangle. The positioning triangle is radially spliced ​​with the outer ring of the base splicing ring, and the outward rod extends radially away from the base splicing ring at an incline.

[0009] In the graphite thermal field splicing positioning ring, the positioning triangle includes two vertically connected positioning rods and limiting rods. The positioning rods and the base splicing ring are provided with mutually cooperating limiting insertion grooves. The limiting rods extend parallel to the end face of the base splicing ring towards the axis.

[0010] In the graphite thermal field splicing positioning ring, the side wall of the positioning rod is provided with a locking abutment surface, and the arc-shaped locking abutment surface is spliced ​​with the outer ring surface of the base splicing ring at the limit insertion groove.

[0011] In the graphite thermal field splicing positioning ring, the inner ring of the supporting ring is axially sleeved with the outer ring of the base splicing ring and radially abuts against the locking abutment surface.

[0012] In the graphite thermal field splicing positioning ring, the inner ring of the base splicing ring and the limiting rod form a fixing groove for the central axis.

[0013] In the graphite thermal field splicing positioning ring, the connection between the positioning triangle and the outward extension rod forms an acute-angle insertion groove, and one end face of the supporting ring is fitted into the insertion groove.

[0014] In the graphite thermal field splicing positioning ring, the outward extension rod has a reinforcing groove facing away from the base splicing ring on the side away from the positioning triangle, and the reinforcing clamp is embedded in each of the reinforcing grooves for fixation.

[0015] In the graphite thermal field splicing positioning ring, a support protrusion is provided on the side of the outward extension rod away from the positioning triangle, and the support protrusion faces the axis of the base splicing ring.

[0016] In the graphite thermal field splicing positioning ring, an arc-shaped support surface is provided on the end face of the support ring, and a positioning step structure is provided on the inner ring of the support ring near the support surface.

[0017] The advantages of this utility model are:

[0018] The structure utilizes a base splicing ring as a base to evenly distribute multiple supporting corner frames to support the crucible. This not only ensures balanced stress distribution among the components but also significantly reduces direct contact with the crucible, preventing the positioning ring from transferring excessive crucible temperature and affecting the heating effect. The positioning ring is assembled from a few components, and the disassembled parts occupy less space, making it easier to transport. The assembly process requires no tools or connectors, and workers can install it by hand. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0020] Figure 2 This is a schematic diagram of the supporting corner frame structure of this utility model.

[0021] Figure 3 This is a schematic diagram of the support ring structure of this utility model.

[0022] Figure 4 This is a schematic diagram showing the fit between the support bracket and the base splicing ring of this utility model.

[0023] Figure 5 This is a schematic diagram showing the cooperation between the support bracket and the support ring of this utility model.

[0024] In the diagram, the components are: base splicing ring 1, limiting insertion groove 11, support bracket 2, positioning triangle 21, outward extension rod 22, positioning rod 23, limiting rod 24, locking abutment surface 25, locking insertion groove 26, reinforcing slot 27, support protrusion 28, support ring 3, support surface 31, positioning step structure 32, and reinforcing hoop 4. Detailed Implementation

[0025] The following are specific embodiments of the utility model, which are described in conjunction with the accompanying drawings to further illustrate the technical solution of the utility model. However, the utility model is not limited to these embodiments.

[0026] like Figures 1-5 As shown, the graphite thermal field splicing positioning ring includes a base splicing ring 1. Several support brackets 2 are evenly spliced ​​on the outer ring of the base splicing ring 1. One end of the support bracket 2 extends into the inner ring towards the center of the base splicing ring 1, and the other end of the support bracket 2 extends radially away from the base splicing ring 1. The outer ring of the support bracket 2 is fitted with a support ring 3 with clearance fit to lock the support bracket 2 on the outer ring.

[0027] The locking action of the support ring forms a clamp-like reinforcement, enhancing the overall resistance to deformation. The support corner frame enables stable force transmission from the inner ring to the outer ring, and the modular splicing improves maintenance and replacement efficiency.

[0028] In this embodiment, the support bracket 2 includes a positioning triangle 21 and an outward rod 22 connected to one end of the positioning triangle 21. The positioning triangle 21 is radially spliced ​​with the outer ring of the base splicing ring 1, and the outward rod 22 extends radially away from the base splicing ring 1 at an incline.

[0029] The positioning triangle 21 provides greater stability for connection with the base splicing ring 1. The outward extension rod extends obliquely from the positioning triangle and can limit the side of the crucible to prevent the crucible from accidentally tilting and deviating from the axis of the central axis, which would lead to uneven heating.

[0030] In this embodiment, the positioning triangle 21 includes two vertically connected positioning rods 23 and limiting rods 24. The positioning rods 23 and the base splicing ring 1 are provided with mutually cooperating limiting insertion grooves 11. The limiting rods 24 extend parallel to the end face of the base splicing ring 1 towards the axis.

[0031] The inner ring of the base splicing ring 1 and the limiting rod 24 form a fixing groove for the central axis.

[0032] The limiting insertion groove 11 is a rectangular groove. After splicing, the positioning rod 23 is perpendicular to the end face of the base splicing ring 1, so that the limiting rod 24 can extend parallel to the base splicing ring 1 to the inner ring area. When the central shaft is inserted into the inner ring, the limiting rod 24 abuts against the end face of the central shaft in the inner ring part, thereby limiting the insertion depth of the central shaft.

[0033] In this embodiment, the side wall of the positioning rod 23 is provided with a locking abutment surface 25, which is arc-shaped and fits into the outer ring surface of the base splicing ring 1 at the opening of the limiting insertion groove 11.

[0034] The inner ring of the supporting ring 3 is axially sleeved with the outer ring of the base splicing ring 1 and radially abuts against the locking abutment surface 25.

[0035] After the positioning rod 23 is spliced ​​with the base splicing ring 1, the locking abutment surface 25 does not exceed the outline of the outer ring of the base splicing ring 1 at the position of the limiting insertion groove 11, so as to avoid blocking the support ring 3 from being inserted along the outer ring; or the curvature of the locking abutment surface 25 is the same as that of the outer ring, which just fills the outline of the outer ring in the limiting insertion groove 11. When the support ring 3 is inserted, it abuts against the locking abutment surface 25 to ensure the stability of the positioning triangle 21 in the limiting insertion groove 11.

[0036] In this embodiment, the connection between the positioning triangle 21 and the outward extension rod 22 forms an acute-angled locking groove 26, and one end face of the supporting ring 3 is fitted into the locking groove 26.

[0037] The positioning rod 23 and the outward rod 22 of the positioning triangle 21 are connected at an acute angle. The acute angle structure of each support bracket forms an annular locking insertion groove 26. The lower end face of the support ring 3 is also set with the same oblique angle and inserted into the locking insertion groove 26, thereby locking the positioning rod 23 in the limiting insertion groove 11. This not only ensures the stability of the support bracket 2 and the base splicing ring 1, but also provides support in the vertical direction of the crucible.

[0038] In this embodiment, the outward extension rod 22 has a reinforced slot 27 on the side away from the positioning triangle 21, which is a reinforcing groove 27 facing away from the base splicing ring 1. The reinforcing hoop 4 is fixed by being embedded in each of the reinforced slots 27.

[0039] Because the supporting ring 3 supports the crucible and its gravity acts on the locking insertion groove 26, the inclined outward rod 22 receives an outward force. Therefore, the reinforcing hoop 4 is used to gather the far end of the outward rod 22 to counteract the outward force, thereby maintaining the shape and structure of the positioning ring.

[0040] In this embodiment, a support protrusion 28 is provided on the side of the outward extension rod 22 away from the positioning triangle 21, and the support protrusion faces the axis of the base splicing ring 1.

[0041] The support protrusion 28 faces the centerline of the positioning ring and is used to contact the side wall of the crucible. While ensuring the axial position of the crucible, it can also reduce contact with the crucible.

[0042] In this embodiment, an arc-shaped support surface 31 is provided on the end face of the support ring 3, and a positioning step structure 32 is provided on the inner ring of the support ring 3 near the support surface 31.

[0043] The arc-shaped support surface can adapt to the bottom contour of the crucible, while the positioning stepped structure 32 can cooperate with the protrusion on the bottom of the crucible to confirm that the crucible is in the axis position and to prevent the crucible from shifting during heating.

[0044] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. Graphite hot field spliced positioning ring, comprising a base spliced ring (1), characterized in that, Several supporting brackets (2) are evenly spliced ​​on the outer ring of the base splicing ring (1). One end of the supporting bracket (2) extends into the inner ring towards the center of the base splicing ring (1), and the other end of the supporting bracket (2) extends outward radially away from the base splicing ring (1). The outer ring of the supporting bracket (2) is fitted with a support ring (3) with clearance fit to lock the supporting bracket (2) on the outer ring.

2. The graphite hot- zone split collar of claim 1, wherein, The support bracket (2) includes a positioning triangle (21) and an outward rod (22) connected to one end of the positioning triangle (21). The positioning triangle (21) is radially spliced ​​with the outer ring of the base splicing ring (1), and the outward rod (22) extends radially away from the base splicing ring (1) at an angle.

3. The graphite thermal field splicing positioning ring according to claim 2, characterized in that, The positioning triangle (21) includes two vertically connected positioning rods (23) and a limiting rod (24). The positioning rods (23) and the base splicing ring (1) are provided with mutually cooperating limiting insertion grooves (11). The limiting rod (24) extends parallel to the end face of the base splicing ring (1) towards the axis.

4. The graphite thermal field splicing positioning ring according to claim 3, characterized in that, The side wall of the positioning rod (23) is provided with a locking abutment surface (25), which is arc-shaped and is joined with the outer ring surface of the base splicing ring (1) at the opening of the limiting insertion groove (11).

5. The graphite thermal field splicing positioning ring according to claim 4, characterized in that, The inner ring of the supporting ring (3) is axially sleeved with the outer ring of the base splicing ring (1) and radially abuts against the locking abutment surface (25).

6. The graphite thermal field splicing positioning ring according to claim 3, characterized in that, The inner ring of the base splicing ring (1) and the limiting rod (24) form a fixing groove for the central axis.

7. The graphite thermal field splicing positioning ring according to claim 2, characterized in that, The connection between the positioning triangle (21) and the outward extension rod (22) forms an acute-angled locking groove (26), and one end face of the supporting ring (3) is fitted into the locking groove (26).

8. The graphite thermal field splicing positioning ring according to claim 2, characterized in that, The outward extension rod (22) has a reinforced slot (27) facing away from the base splicing ring (1) on the side away from the positioning triangle (21), and the reinforced hoop (4) is fixed by being embedded in each of the reinforced slots (27).

9. The graphite thermal field splicing positioning ring according to claim 8, characterized in that, The outward extension rod (22) is also provided with a support protrusion (28) on the side away from the positioning triangle (21), and the support protrusion is oriented toward the axis of the base splicing ring (1).

10. The graphite thermal field splicing positioning ring according to claim 1, characterized in that, An arc-shaped support surface (31) is provided on the end face of the support ring (3), and a positioning step structure (32) is provided on the inner ring of the support ring (3) near the support surface (31).

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