Carbon-carbon bolt for main heater of single crystal furnace

Abstract

The utility model discloses a carbon-carbon bolt for a main heater of a single crystal furnace. The carbon-carbon bolt comprises a nut body and a connecting hole formed in the nut body, an internal thread is arranged at the position of the inner wall of the connecting hole; a bolt body is connected to the position, located at the lower end of the nut body, in the connecting hole. When the single crystal furnace main heater carbon-carbon bolt is used, the connecting hole is connected with the external thread on the outer wall of the bolt body through the internal thread on the inner wall, so that the bolt body is installed at the lower end of the nut body, and then the single crystal furnace main heater carbon-carbon bolt is connected with a single crystal furnace through the external thread. According to the single crystal furnace main heater carbon-carbon bolt, the single crystal furnace main heater carbon-carbon bolt is installed inside a single crystal furnace, through the arrangement of the split type bolt body and the nut body, the thermal expansion coefficient can be dispersed in the process that the single crystal furnace main heater carbon-carbon bolt is used in cooperation with a heater, and cracks caused by the thermal expansion coefficient are reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field related to single crystal furnaces, and in particular relates to a carbon-carbon bolt for a main heater of a single crystal furnace. Background Art

[0002] The carbon-carbon bolt of the single crystal furnace main heater is a component used to fix the graphite main heater. The graphite main heater is an important component in the thermal field of the single crystal furnace. Its function is to heat and melt the raw materials in the quartz crucible. The carbon-carbon bolt is used to connect the various parts of the graphite main heater together to ensure that it can work stably in a high temperature environment. The traditional carbon-carbon bolt of the single crystal furnace main heater is an integrated type. Due to material reasons, the thermal expansion coefficient is inconsistent during use with the heater, which is very easy to crack, causing the heater to exit due to cracks or cause sparks, thus causing serious losses. Therefore, a carbon-carbon bolt of the single crystal furnace main heater is indispensable. Utility Model Content

[0003] The purpose of the utility model is to provide a carbon-carbon bolt for a single crystal furnace main heater, so as to solve the problem in the above background technology that the traditional carbon-carbon bolt for the single crystal furnace main heater is an integrated type, and when used in conjunction with the heater, the thermal expansion coefficient is inconsistent due to material reasons, which is very easy to cause cracks.

[0004] To achieve the above purpose, the utility model provides the following technical solutions: a carbon-carbon bolt for a main heater of a single crystal furnace, comprising

[0005] A nut body and a connecting hole arranged at an inner position of the nut body;

[0006] An internal thread is provided at the inner wall of the connecting hole;

[0007] A bolt body is connected inside the connection hole and at the lower end of the nut body;

[0008] A fastening groove is provided at an inner position of the upper end of the bolt body;

[0009] An external thread is provided at the outer wall of the bolt body;

[0010] By setting the split bolt body and the nut body, the carbon-carbon bolt of the main heater of the single crystal furnace can disperse the thermal expansion coefficient when used in conjunction with the heater, thereby reducing cracks caused by the thermal expansion coefficient.

[0011] Preferably, the connecting hole is a circular ring structure, and the connecting hole passes through the nut body.

[0012] Preferably, the connecting hole is connected to the external thread of the outer wall of the bolt body through the internal thread of the inner wall, so that the bolt body is installed on the lower end of the nut body.

[0013] Preferably, the inner diameter of the connecting hole is equal to the outer diameter of the bolt body, and the connecting hole and the bolt body are connected via a thread. The connection depth of the bolt body can be adjusted by setting the inner thread and the outer thread.

[0014] Preferably, a first anti-compression groove and a second anti-compression groove are respectively provided at the front and rear sides of the bolt body, and the first anti-compression groove and the second anti-compression groove are embedded in the bolt body.

[0015] Preferably, the first anti-compression groove and the second anti-compression groove are both a hollow rectangular parallelepiped structure, and the first anti-compression groove and the second anti-compression groove are the same in size.

[0016] Preferably, a pressure-resistant through hole is provided at an inner position of the bolt body, the pressure-resistant through hole penetrates the bolt body, and the pressure-resistant through hole is located at the center position of the bolt body.

[0017] Preferably, the pressure-resistant through hole is a hollow cylindrical structure. By arranging the pressure-resistant through hole, the first pressure-resistant groove and the second pressure-resistant groove, the degree of deformation of the bolt body caused by the outward expansion of the carbon-carbon bolt of the main heater of the single crystal furnace can be reduced.

[0018] Compared with the prior art, the utility model provides a carbon-carbon bolt for the main heater of a single crystal furnace, which has the following beneficial effects:

[0019] 1. In the carbon-carbon bolt of the single crystal furnace main heater, when using the carbon-carbon bolt of the single crystal furnace main heater, first connect the connecting hole through the internal thread of the inner wall with the external thread of the outer wall of the bolt body, so that the bolt body is installed at the lower end of the nut body, and then connect the carbon-carbon bolt of the single crystal furnace main heater with the single crystal furnace through the external thread, so that the carbon-carbon bolt of the single crystal furnace main heater is installed inside the single crystal furnace. Through the arrangement of the split bolt body and the nut body, the carbon-carbon bolt of the single crystal furnace main heater can disperse the thermal expansion coefficient during use with the heater, reduce the cracks caused by the thermal expansion coefficient, so that the carbon-carbon bolt of the single crystal furnace main heater can be better used.

[0020] 2. In the carbon-carbon bolt of the single crystal furnace main heater, when using the carbon-carbon bolt of the single crystal furnace main heater, first connect the connecting hole through the internal thread of the inner wall with the external thread of the outer wall of the bolt body, so that the bolt body is installed at the lower end of the nut body, and then connect the carbon-carbon bolt of the single crystal furnace main heater with the single crystal furnace through the external thread, so that the carbon-carbon bolt of the single crystal furnace main heater is installed inside the single crystal furnace. Through the combination of the pressure-resistant through hole, the first pressure-resistant groove and the second pressure-resistant groove, the carbon-carbon bolt of the single crystal furnace main heater can offset the deformation of the bolt body expanding outward by deforming itself inwardly. Through the setting of the pressure-resistant through hole, the first pressure-resistant groove and the second pressure-resistant groove, the deformation degree of the bolt body caused by the outward expansion of the carbon-carbon bolt of the single crystal furnace main heater can be reduced, so that the carbon-carbon bolt of the single crystal furnace main heater can be better used. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the carbon-carbon bolts of the main heater of the single crystal furnace of the utility model.

[0022] Figure 2 This is a structural schematic diagram of the carbon-carbon bolts of the main heater of the single crystal furnace of the utility model without the bolt body installed.

[0023] Figure 3 It is a schematic diagram of the enlarged structure of the bolt body of the carbon-carbon bolt of the main heater of the single crystal furnace of the utility model.

[0024] Figure 4 It is a schematic diagram of the structure inside the bolt body of the carbon-carbon bolt of the main heater of the single crystal furnace of the utility model.

[0025] In the figure: 1. nut body; 2. connecting hole; 3. bolt body; 4. external thread; 5. first pressure-resistant groove; 6. fastening groove; 7. second pressure-resistant groove; 8. internal thread; 9. pressure-resistant through hole. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] The utility model provides Figure 1-4The carbon-carbon bolt of the single crystal furnace main heater shown is a carbon-carbon bolt of the single crystal furnace main heater, comprising a nut body 1 and a connecting hole 2 arranged at an internal position of the nut body 1; an internal thread 8 is arranged at the inner wall position of the connecting hole 2; a bolt body 3 is connected to the inside of the connecting hole 2 and located at the lower end position of the nut body 1; a fastening groove 6 is arranged at the upper internal position of the bolt body 3; an external thread 4 is arranged at the outer wall position of the bolt body 3; through the arrangement of the split bolt body 3 and the nut body 1, the carbon-carbon bolt of the single crystal furnace main heater can disperse the thermal expansion coefficient when used in conjunction with the heater, thereby reducing cracks caused by the thermal expansion coefficient.

[0028] like Figure 1 , Figure 2 and Figure 3 As shown, in order to disperse the thermal expansion coefficient of the carbon-carbon bolt of the single crystal furnace main heater when used with the heater, when using the carbon-carbon bolt of the single crystal furnace main heater, first connect the connecting hole 2 with the external thread 4 on the outer wall of the bolt body 3 through the internal thread 8 on the inner wall, so that the bolt body 3 is installed at the lower end of the nut body 1, and then the carbon-carbon bolt of the single crystal furnace main heater is connected to the single crystal furnace through the external thread 4, so that the carbon-carbon bolt of the single crystal furnace main heater is installed inside the single crystal furnace. Through the arrangement of the split bolt body 3 and the nut body 1, the carbon-carbon bolt of the single crystal furnace main heater can disperse the thermal expansion coefficient when used with the heater, reduce the cracks caused by the thermal expansion coefficient, so that the carbon-carbon bolt of the single crystal furnace main heater can be better used.

[0029] The connecting hole 2 is a circular ring structure. The connecting hole 2 passes through the nut body 1. The connecting hole 2 is connected to the external thread 4 on the outer wall of the bolt body 3 through the internal thread 8 on the inner wall, so that the bolt body 3 is installed at the lower end of the nut body 1. The inner diameter of the connecting hole 2 is equal to the outer diameter of the bolt body 3. The connecting hole 2 and the bolt body 3 are connected by threads. By setting the internal thread 8 and the external thread 4, the connection depth of the bolt body 3 can be adjusted.

[0030] like Figure 1 , Figure 2 and Figure 3As shown, in order to adjust the connection depth of the bolt body 3, when using the carbon-carbon bolt of the single crystal furnace main heater, first connect the connecting hole 2 through the internal thread 8 on the inner wall and the external thread 4 on the outer wall of the bolt body 3, so that the bolt body 3 is installed at the lower end of the nut body 1, and then adjust the position of the bolt body 3 according to actual conditions, and then connect the carbon-carbon bolt of the single crystal furnace main heater with the single crystal furnace through the external thread 4, so that the carbon-carbon bolt of the single crystal furnace main heater is installed inside the single crystal furnace. Through the setting of the internal thread 8 and the external thread 4, the connection depth of the bolt body 3 can be adjusted, so that the position of the bolt body 3 can be adjusted according to actual conditions, and then the carbon-carbon bolt of the single crystal furnace main heater can be better installed.

[0031] A first pressure-resistant groove 5 and a second pressure-resistant groove 7 are respectively arranged at the front and rear sides of the bolt body 3. The first pressure-resistant groove 5 and the second pressure-resistant groove 7 are embedded in the interior of the bolt body 3. The first pressure-resistant groove 5 and the second pressure-resistant groove 7 are both a kind of hollow rectangular structure. The sizes of the first pressure-resistant groove 5 and the second pressure-resistant groove 7 are the same. A pressure-resistant through hole 9 is arranged at the internal position of the bolt body 3. The pressure-resistant through hole 9 passes through the bolt body 3. The pressure-resistant through hole 9 is located at the center position of the bolt body 3. The pressure-resistant through hole 9 is a kind of hollow cylindrical structure. By setting the pressure-resistant through hole 9, the first pressure-resistant groove 5 and the second pressure-resistant groove 7, the deformation degree of the bolt body 3 caused by the outward expansion of the carbon-carbon bolts of the main heater of the single crystal furnace can be reduced.

[0032] like Figure 1 , Figure 3 and Figure 4 As shown, in order to reduce the deformation degree of the bolt body 3 caused by the outward expansion of the carbon-carbon bolt of the single crystal furnace main heater, when using the carbon-carbon bolt of the single crystal furnace main heater, first connect the connecting hole 2 with the external thread 4 of the outer wall of the bolt body 3 through the internal thread 8 of the inner wall, so that the bolt body 3 is installed at the lower end of the nut body 1, and then connect the carbon-carbon bolt of the single crystal furnace main heater with the single crystal furnace through the external thread 4, so that the carbon-carbon bolt of the single crystal furnace main heater is installed inside the single crystal furnace. By combining the pressure-resistant through hole 9, the first pressure-resistant groove 5 and the second pressure-resistant groove 7, the carbon-carbon bolt of the single crystal furnace main heater can offset the deformation of the bolt body 3 expanding outward by deforming itself inward. By setting the pressure-resistant through hole 9, the first pressure-resistant groove 5 and the second pressure-resistant groove 7, the deformation degree of the bolt body 3 caused by the outward expansion of the carbon-carbon bolt of the single crystal furnace main heater can be reduced, so that the carbon-carbon bolt of the single crystal furnace main heater can be better used.

[0033] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A carbon-carbon bolt for a main heater of a single crystal furnace, characterized in that: include A nut body (1) and a connecting hole (2) arranged at an internal position of the nut body (1); An internal thread (8) is provided at the inner wall of the connecting hole (2); A bolt body (3) is connected inside the connection hole (2) and at the lower end of the nut body (1); A fastening groove (6) is provided at an inner position of the upper end of the bolt body (3); An external thread (4) is provided at the outer wall of the bolt body (3); By configuring the split bolt body (3) and the nut body (1), the carbon-carbon bolt of the main heater of the single crystal furnace can disperse the thermal expansion coefficient when used in conjunction with the heater, thereby reducing cracks caused by the thermal expansion coefficient.

2. The carbon-carbon bolt for the main heater of a single crystal furnace according to claim 1, characterized in that: The connecting hole (2) is a circular ring structure, and the connecting hole (2) passes through the nut body (1).

3. The carbon-carbon bolt for the main heater of a single crystal furnace according to claim 2, characterized in that: The connection hole (2) is connected to the external thread (4) on the outer wall of the bolt body (3) via the internal thread (8) on the inner wall, so that the bolt body (3) is mounted on the lower end of the nut body (1).

4. The carbon-carbon bolt for the main heater of a single crystal furnace according to claim 3, characterized in that: The inner diameter of the connection hole (2) is equal to the outer diameter of the bolt body (3); the connection hole (2) and the bolt body (3) are connected via a thread; and the connection depth of the bolt body (3) can be adjusted by setting the inner thread (8) and the outer thread (4).

5. The carbon-carbon bolt for the main heater of a single crystal furnace according to claim 4, characterized in that: A first anti-pressure groove (5) and a second anti-pressure groove (7) are respectively arranged at the front and rear sides of the bolt body (3); the first anti-pressure groove (5) and the second anti-pressure groove (7) are embedded in the interior of the bolt body (3).

6. The carbon-carbon bolt for the main heater of a single crystal furnace according to claim 5, characterized in that: The first anti-pressure groove (5) and the second anti-pressure groove (7) are both hollow rectangular parallelepiped structures, and the first anti-pressure groove (5) and the second anti-pressure groove (7) are of the same size.

7. The carbon-carbon bolt for the main heater of a single crystal furnace according to claim 5, characterized in that: A pressure-resistant through hole (9) is provided at an internal position of the bolt body (3); the pressure-resistant through hole (9) penetrates the bolt body (3); and the pressure-resistant through hole (9) is located at a central position of the bolt body (3).

8. The carbon-carbon bolt for the main heater of a single crystal furnace according to claim 7, characterized in that: The pressure-resistant through hole (9) is a hollow cylindrical structure. By arranging the pressure-resistant through hole (9), the first pressure-resistant groove (5) and the second pressure-resistant groove (7), the degree of deformation of the bolt body (3) caused by outward expansion of the carbon-carbon bolt of the main heater of the single crystal furnace can be reduced.

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