Split type supporting rod for single crystal furnace

Abstract

The utility model discloses a split type support rod for a single crystal furnace. The split type support rod is characterized by comprising a support cylinder and a tray arranged at the upper end of the support cylinder, when the split type supporting rod for the single crystal furnace is used, the clamping block at the upper end of the supporting cylinder is clamped into the clamping groove in the lower end of the tray, so that the tray is mounted at the upper end of the supporting cylinder, in the process of producing single crystal silicon, a crucible is placed into the containing groove in the inner side of the tray, and then a silicon block is placed in the crucible and heated and melted in the single crystal furnace; the rod-shaped seed crystal is immersed in liquid, silicon atoms in the liquid can form regular crystals on a solid-liquid interface at a proper temperature to form single crystals, then the crucible is driven by the crucible supporting rod to ascend and descend and rotate, so that the rod-shaped seed crystal rotates and is lifted upwards, and the silicon atoms in the liquid can continue to crystallize on the formed single crystals; and through the arrangement of the clamping blocks and the clamping grooves, the time for disassembling and assembling the single crystal furnace is saved, and the efficiency for disassembling and assembling the single crystal furnace is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field related to single crystal silicon production, and particularly relates to a split support rod for a single crystal furnace. Background Art

[0002] With the rapid development of the solar photovoltaic industry, new requirements have been put forward for the quality and cost of solar cells. Monocrystalline silicon is a major material for preparing solar cells and has a high photoelectric conversion efficiency. Monocrystalline silicon is mainly produced by the Czochralski single crystal manufacturing method. The single crystal furnace is the main equipment of this production process. The single crystal furnace includes a crucible for accommodating silicon blocks and a crucible support rod for supporting and rotating the crucible. In the process of producing single crystal silicon, the silicon block is first placed in the crucible and heated and melted in the single crystal furnace. Then the rod-shaped seed crystal is immersed in the liquid. At the appropriate temperature, the silicon atoms in the liquid will form regular crystals at the solid-liquid interface to become a single crystal. The crucible is then driven up and down and rotated by the crucible support rod, so that the rod-shaped seed crystal rotates and rises upward, and the silicon atoms in the liquid will continue to crystallize on the single crystal formed previously to form a single crystal silicon ingot.

[0003] The existing split support rod for single crystal furnace includes a tray and a support tube connected to each other. The tray is used to connect to the crucible support, and the support tube is used to connect to the driving device. The driving device drives the crucible to rotate and lift through the crucible support rod. However, the assembly between the tray and the support rod shaft is generally connected by support rod screws, which makes disassembly and transportation more laborious. Therefore, a split support rod for single crystal furnace is indispensable. Utility Model Content

[0004] The purpose of the utility model is to provide a split support rod for a single crystal furnace, so as to solve the problem in the above background technology that the general tray and the support rod shaft are assembled by support rod screws, which makes disassembly and transportation more laborious.

[0005] In order to achieve the above object, the present invention provides the following technical solutions: a split support rod for a single crystal furnace, characterized in that:

[0006] A support and a tray arranged at the upper end of the support;

[0007] A receiving groove is provided at the inner side of the tray;

[0008] A card slot is provided at an inner position of the lower end of the tray, and a card block is connected to the inner position of the card slot and at the upper end position of the bracket;

[0009] The arrangement of the clamping block and the clamping slot saves time in disassembling and assembling the single crystal furnace, and improves the efficiency of disassembling and assembling the single crystal furnace.

[0010] Preferably, a placement groove is provided at an inner position of the outer wall of the block, and a compression spring is installed at an inner position of the placement groove.

[0011] Preferably, a connecting plate is connected to the outer side of the extrusion spring, and the connecting plate is made of stainless steel.

[0012] Preferably, an extrusion ball is glued to the outer side of the connecting plate, and the extrusion ball is a hemispherical structure.

[0013] Preferably, the squeezing ball is made of rubber material. The arrangement of the squeezing ball, the connecting plate and the squeezing spring enhances the stability of the bracket and the tray.

[0014] Preferably, a through hole and a circular hole are respectively provided at the inner positions of the tray and the supporting tube, the through hole passes through the tray, and the circular hole passes through the supporting tube, and the diameters of the through hole and the circular hole are the same.

[0015] Preferably, the bracket and the clamping block are an integrated structure, the height of the clamping block is smaller than the height of the clamping slot, and there is a gap between the free end of the clamping block and the bottom of the clamping slot.

[0016] Preferably, the card block and the card slot are connected by plugging, and the setting of the gap between the free end of the card block and the bottom of the card slot reduces the risk of residual stress and reaction force during the crystal pulling process causing the support rod to break.

[0017] Compared with the prior art, the present invention provides a split support rod for a single crystal furnace, which has the following beneficial effects:

[0018] 1. In the split support rod for the single crystal furnace, when using the split support rod for the single crystal furnace, first, the clamping block at the upper end of the support tube is clamped into the clamping slot at the lower end of the tray, so that the tray is installed at the upper end of the support tube, and then the split support rod for the single crystal furnace is installed inside the single crystal furnace. In the process of producing single crystal silicon, the crucible is first placed in the receiving slot inside the tray, and then the silicon block is placed in the crucible, heated and melted in the single crystal furnace, and then the rod-shaped seed crystal is immersed in the liquid. At a suitable temperature, the silicon atoms in the liquid will form regular crystals at the solid-liquid interface to form a single crystal. The crucible is then driven to rise and fall and rotate by the crucible support rod, so that the rod-shaped seed crystal rotates and rises, and the silicon atoms in the liquid will continue to crystallize on the single crystal formed in front to form a single crystal silicon ingot. The arrangement of the clamping block and the clamping slot saves the time for disassembling and assembling the single crystal furnace, and improves the efficiency of disassembling and assembling the single crystal furnace.

[0019] 2. In the split support rod for the single crystal furnace, when using the split support rod for the single crystal furnace, first glue the squeezing ball to the outer side of the connecting plate, and then connect the inner side of the connecting plate with one end of the squeezing spring, and then install the other end of the squeezing spring inside the placement groove, so that the squeezing ball is installed on the outside of the card block, and then the card block at the upper end of the bracket is inserted into the card slot at the lower end of the tray. When the card block enters the inside of the card slot, the squeezing ball outside the card block is squeezed against the inner wall of the card slot by the elastic force of the squeezing spring, so that the tray is installed on the upper end of the bracket, and then the split support rod for the single crystal furnace is installed inside the single crystal furnace. By setting the squeezing ball, connecting plate and squeezing spring, the stability of the bracket and the tray is enhanced, so that the split support rod for the single crystal furnace can be better used. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of the split support rod for a single crystal furnace of the utility model.

[0021] Figure 2 This is a structural schematic diagram of the split support rod for a single crystal furnace of the utility model without a tray installed.

[0022] Figure 3 This is a structural schematic diagram of the back side of the split support rod tray for a single crystal furnace of the utility model.

[0023] Figure 4 This is an enlarged structural diagram of the split support rod clamp block for a single crystal furnace of the utility model.

[0024] Figure 5 This is a schematic diagram of the enlarged structure of the interior of the split support rod placement slot for the single crystal furnace of the utility model.

[0025] In the figure: 1. bracket; 2. tray; 3. through hole; 4. receiving groove; 5. clamping block; 6. round hole; 7. clamping groove; 8. squeezing ball; 9. connecting plate; 10. squeezing spring; 11. placement groove. DETAILED DESCRIPTION

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

[0027] The utility model provides Figure 1-5The split support rod for a single crystal furnace shown is a split support rod for a single crystal furnace, which is characterized in that: it includes a support tube 1 and a tray 2 arranged at the upper end of the support tube 1; a receiving groove 4 is provided at the inner side of the tray 2; a clamping groove 7 is provided at the inner position of the lower end of the tray 2, and a clamping block 5 is connected to the inside of the clamping groove 7 and located at the upper end of the support tube 1; through the arrangement of the clamping block 5 and the clamping groove 7, the time for disassembling and assembling the single crystal furnace is saved, and the efficiency of disassembling and assembling the single crystal furnace is improved.

[0028] like Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, in order to save time in disassembling and assembling the single crystal furnace and improve the efficiency of disassembling and assembling the single crystal furnace, when using the split support rod for the single crystal furnace, first, the block 5 at the upper end of the support tube 1 is inserted into the slot 7 at the lower end of the tray 2, so that the tray 2 is installed at the upper end of the support tube 1, and then the split support rod for the single crystal furnace is installed inside the single crystal furnace. In the process of producing single crystal silicon, the crucible is first placed in the receiving groove 4 inside the tray 2, and then the silicon block is placed in the crucible, heated and melted in the single crystal furnace, and then the rod-shaped seed crystal is immersed in the liquid. At a suitable temperature, the silicon atoms in the liquid will form regular crystals at the solid-liquid interface to become a single crystal. The crucible is then driven to rise and fall and rotate by the crucible support rod, so that the rod-shaped seed crystal rotates and rises, and the silicon atoms in the liquid will continue to crystallize on the single crystal formed previously to form a single crystal silicon ingot. The arrangement of the block 5 and the slot 7 saves time in disassembling and assembling the single crystal furnace and improves the efficiency of disassembling and assembling the single crystal furnace.

[0029] A placement groove 11 is provided at the inner position of the outer wall of the card block 5, and an extrusion spring 10 is installed at the inner position of the placement groove 11. A connecting plate 9 is connected to the outer position of the extrusion spring 10. The connecting plate 9 is made of stainless steel material. A squeezing ball 8 is glued to the outer position of the connecting plate 9. The squeezing ball 8 is a hemispherical structure and is made of rubber material. The arrangement of the squeezing ball 8, the connecting plate 9 and the squeezing spring 10 enhances the stability of the bracket 1 and the tray 2.

[0030] like Figure 1 、 Figure 2 、 Figure 4 and Figure 5As shown, in order to enhance the stability of the support cylinder 1 and the tray 2, when using the split support rod for the single crystal furnace, the squeezing ball 8 is first glued to the outer side of the connecting plate 9, and then the inner side of the connecting plate 9 is connected to one end of the squeezing spring 10, and then the other end of the squeezing spring 10 is installed in the placement groove 11, so that the squeezing ball 8 is installed on the outside of the block 5, and then the block 5 at the upper end of the support cylinder 1 is inserted into the slot 7 at the lower end of the tray 2. When the block 5 enters the slot 7, the squeezing ball 8 on the outside of the block 5 is squeezed against the inner wall of the slot 7 by the elastic force of the squeezing spring 10, so that the tray 2 is installed on the upper end of the support cylinder 1, and then the split support rod for the single crystal furnace is installed in the single crystal furnace. By setting the squeezing ball 8, connecting plate 9 and squeezing spring 10, the stability of the support cylinder 1 and the tray 2 is enhanced, so that the split support rod for the single crystal furnace can be better used.

[0031] A through hole 3 and a circular hole 6 are respectively provided at the internal positions of the tray 2 and the support tube 1. The through hole 3 passes through the tray 2, and the circular hole 6 passes through the support tube 1. The diameters of the through hole 3 and the circular hole 6 are the same. The support tube 1 and the block 5 are an integrated structure. The height of the block 5 is less than the height of the slot 7. There is a gap between the free end of the block 5 and the bottom of the slot 7. The block 5 and the slot 7 are connected by plugging. By setting the gap between the free end of the block 5 and the bottom of the slot 7, the risk of the support rod breaking caused by residual stress and the reaction force during the crystal pulling process is reduced.

[0032] like Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, in order to reduce the risk of the support rod breaking caused by residual stress and the reaction force during the crystal pulling process, when using the split support rod for the single crystal furnace, first insert the block 5 at the upper end of the support tube 1 into the slot 7 at the lower end of the tray 2. Since the height of the block 5 is less than the height of the slot 7, there is a gap between the free end of the block 5 and the bottom of the slot 7, so that the tray 2 is installed on the upper end of the support tube 1, and then the split support rod for the single crystal furnace is installed inside the single crystal furnace. By setting the gap between the free end of the block 5 and the bottom of the slot 7, the risk of the support rod breaking caused by the residual stress and the reaction force during the crystal pulling process is reduced, so that the split support rod for the single crystal furnace 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 replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A split support rod for a single crystal furnace, characterized by: include A support (1) and a tray (2) arranged at the upper end of the support (1); A receiving groove (4) is provided at the inner side of the tray (2); A card slot (7) is provided at an inner position of the lower end of the tray (2), and a card block (5) is connected to the inner position of the card slot (7) and at an upper end position of the support tube (1); By arranging the clamping block (5) and the clamping slot (7), the time for disassembling and assembling the single crystal furnace is saved, and the efficiency of disassembling and assembling the single crystal furnace is improved; a placement slot (11) is arranged at an inner position of the outer wall of the clamping block (5), and an extrusion spring (10) is installed at an inner position of the placement slot (11); a connecting plate (9) is connected at an outer position of the extrusion spring (10), and the connecting plate (9) is made of stainless steel material; an extrusion ball (8) is glued at an outer position of the connecting plate (9), and the extrusion ball (8) is a hemispherical structure.

2. The split support rod for a single crystal furnace according to claim 1, characterized in that: The squeezing ball (8) is made of rubber material. The arrangement of the squeezing ball (8), the connecting plate (9) and the squeezing spring (10) enhances the stability of the support tube (1) and the tray (2).

3. The split support rod for a single crystal furnace according to claim 2, characterized in that: A through hole (3) and a circular hole (6) are respectively provided at the inner positions of the tray (2) and the support tube (1); the through hole (3) passes through the tray (2), and the circular hole (6) passes through the support tube (1); and the diameters of the through hole (3) and the circular hole (6) are the same.

4. The split support rod for a single crystal furnace according to claim 3, characterized in that: The support tube (1) and the clamping block (5) are an integrated structure; the height of the clamping block (5) is smaller than the height of the clamping slot (7); and a gap is provided between the free end of the clamping block (5) and the bottom of the clamping slot (7).

5. The split support rod for a single crystal furnace according to claim 4, characterized in that: The clamping block (5) and the clamping slot (7) are connected by plugging, and the gap between the free end of the clamping block (5) and the bottom of the clamping slot (7) is provided to reduce the risk of the support rod being broken due to residual stress and the reaction force during the crystal pulling process.

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