Pulley alignment device for single crystal furnace

Abstract

The utility model belongs to the technical field of monocrystalline silicon preparation, and particularly relates to a single crystal furnace pulley alignment device which comprises an alignment structure arranged on one side of a first pulley in a pulley block, the alignment structure and the first pulley are arranged in a roller box, and the first pulley is arranged in the roller box through a connecting device. One side of the first pulley is externally tangent to the outer side of the alignment structure by adjusting the connecting piece based on the alignment structure, so that the position alignment of the pulley block is realized; the alignment structure comprises a connecting shaft, one end of the connecting shaft is installed on the top of the roller box, and the outer side, close to the other end, of the connecting shaft is externally tangent to one side of the first pulley. The other end of the connecting shaft is mounted at the bottom of the roller box; the alignment structure and the connecting device are arranged, one side of the first pulley is externally tangent to the outer side of the alignment structure by adjusting the connecting piece based on the alignment structure, position alignment of the pulley block is achieved, the center of the pulley block is prevented from inclining and deviating from the rotating center, and stability and quality of crystal growth are guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model belongs to single crystal silicon preparation technical field, concretely is a single crystal furnace pulley alignment device. BACKGROUND

[0002] The principle of preparing single crystal silicon at present is that polycrystalline silicon is heated and melted into a molten state, the liquid surface is controlled at the crystallization critical point by controlling the heat field, and single crystal silicon is grown by pulling single crystal seed crystal.

[0003] In the preparation process of single crystal silicon, single crystal silicon is grown by pulling single crystal seed crystal in a vertical pulling single crystal furnace. In the vertical pulling single crystal furnace, the seed crystal at the lower end of the upper driving part is immersed in the polycrystalline silicon molten raw material in the crucible, the seed crystal is pulled while rotating the seed crystal and the crucible, and the seed crystal lower end starts to grow the crystal bar. However, with the large-scale of the single crystal furnace, the distance between the upper driving part of the single crystal furnace and the rotation center increases, which leads to the increase of the rotation center error, so that the centering of the single crystal in the growth process is not good, the crystal bar is inclined and deviates from the rotation center, the dislocation or crystal growth of the crystal is not good, etc. The quality of the crystal bar is affected.

[0004] Therefore, it is necessary to design a single crystal furnace pulley alignment device to improve the above problems. SUMMARY

[0005] In order to solve the problems of the prior art, the utility model provides a single crystal furnace pulley alignment device, including reel box, pulley block and alignment structure are installed in reel box, pulley block includes at least one first pulley and one second pulley, second pulley is connected with reel box side wall, first pulley is located above second pulley, first pulley is connected with reel box top wall through connecting device, alignment structure is located in first pulley side, through adjusting connecting device, first pulley side is tangent with alignment structure outside, realizes pulley block position alignment.

[0006] The alignment structure includes a connecting shaft, one end of the connecting shaft is installed at the top of the reel box, and the other end of the connecting shaft is tangent with the first pulley on the outside. The other end of the connecting shaft is installed at the bottom of the reel box.

[0007] Further, the connecting shaft is a T-shaped connecting shaft, the connecting shaft is provided with a first connecting shaft and a second connecting shaft, one end of the first connecting shaft is installed at the top of the reel box, the other end of the first connecting shaft is connected with one end of the second connecting shaft, and the other end of the second connecting shaft is installed at the bottom of the reel box through a damping sleeve.

[0008] Further, the diameter size of the first connecting shaft is greater than that of the second connecting shaft.

[0009] Further, the second connecting shaft is externally tangent to one side of the outer circle of the first pulley.

[0010] Further, the connecting device and the first pulley are arranged in the winding box, the connecting device is in S-shaped structure, and two ends of the connecting device are respectively connected with the winding box and the first pulley through connecting pieces in a threaded mode.

[0011] Further, the connecting piece is a screw.

[0012] Further, a second mounting hole for mounting the connecting shaft is arranged at the top of the winding box, and the center of the second mounting hole is concentric with the centers of the connecting shaft and the damping sleeve.

[0013] The present application has the following advantages:

[0014] The pulley set and the alignment structure are arranged in the winding box, the first pulley is arranged in the winding box through the connecting device, the first pulley is externally tangent to one side of the alignment structure based on the position of the alignment structure through manual adjustment of the connecting device, the position of the pulley set is aligned, the center of the pulley set is consistent with the rotation center of the single crystal furnace, the center of the pulley set is prevented from being inclined and deviated from the rotation center, and the stability and quality of crystal growth are ensured. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a structural schematic view of the single crystal furnace pulley alignment device.

[0016] Reference signs:

[0017] In the figure, 1 is a winding box, 2 is a first pulley, 3 is an alignment structure, 4 is a damping sleeve, and 5 is a connecting device. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0019] Please refer to Figure 1The utility model provides a single crystal furnace pulley alignment device, including reel box 1, reel box 1 is installed with pulley block and alignment structure 3, pulley block includes at least one first pulley 2 and one second pulley, the second pulley is connected with reel box 1 side wall, the first pulley 2 is located the second pulley top, the first pulley 2 is connected with reel box 1 top wall through connecting device 5, alignment structure 3 is located first pulley 2 one side, through the adjustment connecting device 5 makes first pulley 2 one side with alignment structure 3 outside excircle, realizes pulley block position alignment,

[0020] Alignment structure 3 includes connecting shaft, one end of connecting shaft is installed at reel box 1 top, and the other end of connecting shaft is close to the outside excircle of first pulley 2 one side;

[0021] Connecting shaft is T-shaped connecting shaft, and connecting shaft is provided with first connecting shaft and second connecting shaft, one end of first connecting shaft is installed at reel box 1 top, the other end of first connecting shaft is connected with one end of second connecting shaft, and the other end of second connecting shaft is installed at reel box 1 bottom through damping sleeve 4.

[0022] The diameter size of the first connecting shaft is greater than the diameter size of the second connecting shaft.

[0023] The second connecting shaft is outside and the first pulley 2 outer circle one side excircle.

[0024] Connecting device 5 and first pulley 2 are all arranged in reel box 1, connecting device 5 is S-shaped structure, and the both ends of connecting device 5 are respectively connected with reel box 1 and first pulley 2 through connecting piece screw thread.

[0025] The connecting piece is a screw.

[0026] The top of reel box 1 is provided with a second mounting hole for mounting the connecting shaft, and the center of the second mounting hole is concentric with the centers of the connecting shaft and the damping sleeve 4.

[0027] The connecting piece is a screw.

[0028] Working principle: the first mounting hole for installing pulley block and the second mounting hole for installing alignment structure 3 are arranged on the reel box 1, and the following strict requirements are required when processing the first mounting hole and the second mounting hole: the center of the second mounting hole is concentric with the center of the connecting shaft and the center of the damping sleeve 4, the first mounting hole for installing pulley block and the relative adjustment gap between pulley blocks are left, the installation position of the connecting device is manually adjusted by using the gap, the first pulley side is tangent to the outside of the alignment structure, and the position of the pulley block is aligned; when the pulley block in the reel box 1 is installed and positioned, the alignment structure 3 is first installed to the second mounting hole of the reel box 1, the first pulley 2 in the pulley block is provided with an R groove, the R groove is tangent to the alignment structure 3, at this time, the position of the pulley block has been corrected to the correct position by the alignment structure 3, and then the pulley block is installed, so that the center position of the seed crystal rope and the plumb line is also in the correct position.

[0029] It is worth noting that, by installing the pulley block and the alignment structure in the reel box, the first pulley is installed in the reel box through the connecting device, based on the position of the alignment structure, the first pulley side is tangent to the outside of the alignment structure by manually adjusting the connecting device, the position of the pulley block is aligned, the seed crystal rope wound on the pulley block is passed out from the damping sleeve 4, the concentricity of the center of the seed crystal rope and the plumb line and the center of the damping sleeve 4 is ensured. The center of the pulley block is consistent with the rotation center of the single crystal furnace, the inclination of the center of the first pulley deviating from the rotation center is prevented, the stability and quality of crystal growth are ensured, the alignment device has the advantages of simple structure, convenience, rapidness, accuracy, high efficiency in the process of equipment debugging and installation, high accuracy and stability after adjustment, and the like.

[0030] The above only describes the preferred embodiments of the utility model, and does not limit the utility model, any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A pulley alignment device for a single crystal furnace, characterized in that, The reel box is provided with a pulley block and a alignment structure, the pulley block comprises at least a first pulley and a second pulley, the second pulley is connected with the side wall of the reel box, the first pulley is above the second pulley, the first pulley is connected with the top wall of the reel box through a connecting device, the alignment structure is on the side of the first pulley, the position of the pulley block is aligned by adjusting the connecting device to make the side of the first pulley and the outside of the alignment structure circumscribe each other; The alignment structure comprises a connecting shaft, one end of the connecting shaft is installed on the top of the reel box, the connecting shaft is close to the other end and circumscribes the side of the first pulley; the other end of the connecting shaft is installed on the bottom of the reel box.

2. The single crystal furnace pulley alignment apparatus of claim 1, wherein, The connecting shaft is a T-shaped connecting shaft, the connecting shaft is provided with a first connecting shaft and a second connecting shaft, one end of the first connecting shaft is installed on the top of the reel box, the other end of the first connecting shaft is connected with one end of the second connecting shaft, the other end of the second connecting shaft is installed on the bottom of the reel box through a damping sleeve.

3. The single crystal furnace pulley alignment apparatus of claim 2, wherein, The diameter of the first connecting shaft is larger than the diameter of the second connecting shaft.

4. The single crystal furnace pulley alignment apparatus of claim 3, wherein, The outside of the second connecting shaft circumscribes the outside of the first pulley.

5. The single crystal furnace pulley alignment apparatus of claim 1, wherein, The connecting device and the first pulley are arranged in the reel box, the connecting device is an S-shaped structure, the two ends of the connecting device are respectively connected with the reel box and the first pulley through connecting pieces.

6. The single crystal furnace pulley alignment apparatus of claim 5, wherein, The connecting piece is a screw.

7. The single crystal furnace pulley alignment apparatus of claim 2, wherein, A second installation hole for installing the connecting shaft is arranged on the top of the reel box, the center of the second installation hole is concentric with the center of the connecting shaft and the damping sleeve.

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