Centering and positioning tool for water cooling screen of round silicon core furnace

Abstract

The utility model provides a centering and positioning tool for a water cooling screen of a round silicon core furnace, and relates to the field of photovoltaic technology. A plurality of chucks are rotationally arranged at the bottom of the seed crystal disc, a water cooling disc is arranged below the seed crystal disc, a plurality of silicon core via holes are formed in the water cooling disc and correspond to the chucks in position, hanging seats are arranged at the bottoms of the chucks, hanging buckles are inserted into the bottoms of the hanging seats, centering needles are arranged on the lower portions of the hanging buckles, and the silicon core via holes are connected with the silicon core via holes. A lifting rope is arranged between the centering needle and the hanging buckle, the centering needle is coaxial with a rotating shaft of the chuck, a scale seat is inserted into the silicon core through hole, scales are arranged at the top of the scale seat, and the scales comprise a plurality of concentric circles which are concentric with the silicon core through hole. The water-cooling disc centering device is convenient to assemble and disassemble, and the water-cooling disc can be rapidly centered and calibrated.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaics, in particular to a centering and positioning tool for a water-cooling screen of a round silicon core furnace. Background Art

[0002] In the photovoltaic field, the growth of polysilicon requires the use of silicon cores, currently available in two types: square silicon cores and round silicon cores. Round silicon cores are an emerging technology that can be used to pull multiple silicon strands (more than 40 strands) at a time. Compared to traditional square silicon cores, round silicon cores can be put into the furnace without cutting or pickling, resulting in a simple process and efficient production. During the round silicon core drawing process, each silicon core is rotated by the chuck on the seed crystal plate. At the same time, a water cooling plate with multiple sets of holes is set below the seed crystal plate. Each round silicon core passes through the corresponding holes in the water cooling plate to dissipate heat, thereby improving efficiency and quality. To ensure consistency during the silicon core drawing process and avoid mutual interference, high requirements are placed on the concentricity of the corresponding holes of the chuck and the water cooling plate on the seed crystal plate. Therefore, installation alignment detection is a key factor.

[0003] In the existing technology, since the maximum working distance between the seed crystal plate and the water cooling plate exceeds 5 meters, and the seed crystal plate is located in the sub-chamber of the silicon core furnace, the space is small. Therefore, in the alignment and calibration of the water cooling plate, there are defects such as inconvenient measurement, long measurement distance, large cumulative error, deviation in data accuracy, slow calibration and long time. Utility Model Content

[0004] The purpose of the utility model is to develop a centering and positioning tool for a water-cooling screen of a round silicon core furnace, which is easy to assemble and disassemble and can quickly center and calibrate the water-cooling plate.

[0005] The utility model is achieved through the following technical solutions:

[0006] A centering and positioning tool for a water-cooled screen of a round silicon core furnace, comprising:

[0007] seed crystal tray;

[0008] Multiple chucks are rotatably mounted on the bottom of the seed crystal tray;

[0009] A water cooling plate is located below the seed crystal plate;

[0010] A plurality of silicon core vias are provided on the water cooling plate and are positioned corresponding to the plurality of chucks;

[0011] The bottom of the chuck is provided with a hanging seat, the bottom of the hanging seat is plugged with a hanging buckle, the lower part of the hanging buckle is provided with a centering needle, a hanging rope is provided between the centering needle and the hanging buckle, and the centering needle is coaxial with the rotating shaft of the chuck;

[0012] A scale seat is inserted into the silicon core via hole, and a scale is provided on the top of the scale seat. The scale includes a plurality of concentric circles having the same center as the silicon core via hole.

[0013] Optionally, a hanging hole is provided at the bottom of the hanging seat, the hanging hole is stepped and has a circular cross-section, the hanging hole is coaxial with the chuck shaft, and the shape of the hanging buckle is adapted to the hanging hole.

[0014] Optionally, the hook is provided with a through hole coaxial therewith, the top of the through hole is a spherical enlarged end, the sling passes through the through hole, and the top of the sling is provided with a spherical end block adapted to the shape of the enlarged end.

[0015] Optionally, the sling is provided with a cylindrical weight coaxial with the sling.

[0016] Optionally, the suspension rope is a steel wire rope or a tungsten wire rope.

[0017] Optionally, a coaxially connected connecting bolt is provided at the bottom end of the sling, and a coaxial connecting screw hole is provided at the top of the centering needle to cooperate with the thread of the connecting bolt.

[0018] Optionally, the upper and lower parts of the centering needle are coaxially cylindrical and conical respectively, and the centering needle is coaxially arranged with the sling.

[0019] Optionally, the scale seat is cylindrical with an outer diameter matching the inner diameter of the silicon core via hole, a disc-shaped scale plate is coaxially connected to the top of the scale seat, and the scale is provided on the top surface of the scale plate.

[0020] Optionally, the scale includes five concentric circles, and the radius difference between two adjacent concentric circles is 1 mm.

[0021] The beneficial effects of the utility model are:

[0022] The utility model has the advantages of simple structure, low manufacturing and use costs, easy installation and disassembly, simple operation process, high centering efficiency, and rapid centering of the silicon core through hole and the chuck, thereby ensuring the accuracy of water cooling plate installation, ensuring the stable quality of silicon core drawing, and improving production. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0024] Figure 1 It is a structural diagram of the utility model;

[0025] Figure 2 Schematic diagram of the structure of the water cooling plate;

[0026] Figure 3for Figure 2 Enlarged view of point A in the middle.

[0027] Figure numerals: 1. Seed crystal plate; 2. Water cooling plate; 3. Chuck; 4. Hanging seat; 5. Hanging hole; 6. Hanging buckle; 7. Lifting rope; 8. End block; 9. Weight block; 10. Connecting bolt; 11. Centering needle; 12. Silicon core through hole; 13. Scale seat; 14. Scale plate. DETAILED DESCRIPTION

[0028] Hereinafter, only certain exemplary embodiments are briefly described. As will be appreciated by those skilled in the art, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and description are to be regarded as illustrative in nature and not restrictive.

[0029] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0030] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0031] like Figures 1-3 As shown, the utility model discloses a centering and positioning tool for a water-cooled screen of a circular silicon core furnace, comprising a seed crystal plate 1 and a water-cooled plate 2 arranged upper and lower, a plurality of chucks 3 being rotatably provided at the bottom of the seed crystal plate 1, a driving source (not shown in the figure) for driving the chucks 3 to rotate is provided inside the seed crystal plate 1, and a silicon core through-hole 12 whose position corresponds to the plurality of chucks 3 is provided on the water-cooled plate 2. After the position of the water-cooled plate 2 is adjusted, the plurality of silicon core through-holes 12 can be coaxial with the plurality of chucks 3 above.

[0032] The bottom of the chuck 3 is connected to a hanging seat 4 , and a hanging hole 5 is provided at the bottom of the hanging seat 4 . The hanging hole 5 is stepped and has a circular cross section. The hanging hole 5 is coaxial with the rotating shaft of the chuck 3 .

[0033] A hanging buckle 6 is provided at the lower part of the hanging seat 4. The shape of the hanging buckle 6 is adapted to the hanging hole 5. It is also stepped and has a circular cross-section. The hanging buckle 6 is movably plugged into the hanging hole 5 at the bottom of the hanging seat 4.

[0034] The hook 6 has a coaxial through-hole with a spherical, enlarged end at its top. A sling 7 is positioned within the hole, with a spherical end block 8 matching the shape of the enlarged end at its top. The sling 7 is a steel or tungsten wire rope and is fitted with a coaxial cylindrical weight 9 that keeps the rope 7 upright and taut.

[0035] The bottom end of the lifting rope 7 is provided with a coaxially connected connecting bolt 10, and the lower part of the lifting rope 7 is provided with a centering needle 11. The upper and lower parts of the centering needle 11 are coaxial cylindrical and conical respectively. The top of the centering needle 11 is coaxially provided with a connecting screw hole that is threadedly matched with the connecting bolt 10.

[0036] A scale seat 13 is provided below the centering needle 11. The scale seat 13 is cylindrical with an outer diameter matching the inner diameter of the silicon core via 12. A disc-shaped scale plate 14 is coaxially connected to the top of the scale seat 13. The top surface of the scale plate 14 is provided with scales, which are five concentric circles. The five concentric circles are concentric with the scale plate 14, and the radius difference between two adjacent concentric circles is 1mm.

[0037] When aligning the seed crystal plate 1 and the water-cooling plate 2, two silicon core through-holes 12 are selected on the water-cooling plate 2 and inserted into the scale seat 13 respectively. The bottom of the chuck 3 corresponding to it is above the scale seat 13, and the hanging buckle 6 is respectively plugged into the hanging seat 4, and the centering needle 11 is connected to the connecting bolt 10. Under the action of the gravity of the weight block 9 and the centering needle 11, the hanging rope 7 is vertical. At this time, the bottom end of the centering needle 11 is coaxial with the rotating shaft of the chuck 3, and the cone at the bottom end of the centering needle 11 points to the scale plate 14. The seed crystal plate 1 drives the chuck 3 to rotate and drives the centering needle 11 to rotate, simulating the actual working situation. The centering installation of the water-cooling plate 2 is adjusted by the deviation of the cone of the centering needle 11 and the scale plate 14 until the qualified installation standard is met, and the coaxiality of the rotating shaft of the chuck 3 and the silicon core through-hole 12 is achieved.

[0038] The utility model has a simple structure, low manufacturing and use costs, is easy to install and disassemble, has a simple operation process, has high centering efficiency, and can quickly align the silicon core through hole 12 with the chuck 3, thereby ensuring the installation accuracy of the water cooling plate 2, ensuring the stable quality of silicon core drawing, and improving production.

[0039] The above embodiments are only preferred embodiments of the present invention and are not limitations on the technical solutions of the present invention. Any technical solution that can be implemented on the basis of the above embodiments without creative work should be deemed to fall within the scope of protection of the patent of the present invention.

Claims

1. A centering and positioning tool for a water-cooled screen of a round silicon core furnace, characterized in that: include: seed crystal tray; Multiple chucks are rotatably mounted on the bottom of the seed crystal tray; A water cooling plate is located below the seed crystal plate; A plurality of silicon core vias are provided on the water cooling plate and are positioned corresponding to the plurality of chucks; The bottom of the chuck is provided with a hanging seat, the bottom of the hanging seat is plugged with a hanging buckle, the lower part of the hanging buckle is provided with a centering needle, a hanging rope is provided between the centering needle and the hanging buckle, and the centering needle is coaxial with the rotating shaft of the chuck; A scale seat is inserted into the silicon core via hole, and a scale is provided on the top of the scale seat. The scale includes a plurality of concentric circles having the same center as the silicon core via hole.

2. The centering and positioning tool for the water-cooling screen of a round silicon core furnace according to claim 1 is characterized in that: A hanging hole is provided at the bottom of the hanging seat. The hanging hole is stepped and has a circular cross section. The hanging hole is coaxial with the chuck shaft, and the shape of the hanging buckle is adapted to the hanging hole.

3. The centering and positioning tool for the water-cooling screen of a round silicon core furnace according to claim 2 is characterized in that: The hook is provided with a through hole coaxial therewith, the top of the through hole is a spherical enlarged end, the sling passes through the through hole, and the top of the sling is provided with a spherical end block adapted to the shape of the enlarged end.

4. The centering and positioning tool for the water-cooling screen of a round silicon core furnace according to claim 1 is characterized in that: The sling is provided with a cylindrical weight block coaxial with the sling.

5. The centering and positioning tool for the water-cooling screen of a round silicon core furnace according to claim 1 is characterized in that: The lifting rope is a steel wire rope or a tungsten wire rope.

6. The centering and positioning tool for the water-cooling screen of a round silicon core furnace according to claim 1 is characterized in that: The bottom end of the suspension rope is provided with a coaxially connected connecting bolt, and the top of the centering needle is coaxially provided with a connecting screw hole that is threadedly matched with the connecting bolt.

7. The centering and positioning tool for the water-cooling screen of a round silicon core furnace according to claim 6 is characterized in that: The upper and lower parts of the centering needle are respectively coaxially cylindrical and conical, and the centering needle is coaxially arranged with the hanging rope.

8. The centering and positioning tool for the water-cooling screen of a round silicon core furnace according to claim 1 is characterized in that: The scale seat is cylindrical with an outer diameter matching the inner diameter of the silicon core via hole. A disc-shaped scale plate is coaxially connected to the top of the scale seat, and the scale is arranged on the top surface of the scale plate.

9. The centering and positioning tool for the water-cooling panel of a round silicon core furnace according to claim 8 is characterized in that: The scale includes five concentric circles, and the radius difference between two adjacent concentric circles is 1 mm.

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