An apparatus for adding ingredients during a crystal pulling process

Abstract

The utility model relates to crystal pulling adding and dosing device field, especially in the process of adding dosing device of crystal pulling. Including hopper, one end of hopper is equipped with moving structure, moving structure includes connecting rod, connecting rod is connected with hopper threadedly, the one end fixedly connected with connecting frame of connecting rod away from hopper, the arc surface slidingly connected with outer storehouse of connecting frame, the arc surface fixedly connected with slide post of connecting rod, the arc surface fixedly connected with connecting block of connecting rod, the one end fixedly connected with the baffle ring of outer storehouse close to hopper, the arc surface swing joint of outer storehouse has the slip ring, the inside fixedly connected with two magnetic blocks of slip ring. The utility model provides a kind of dosing device of adding in the process of crystal pulling, with the device that it is convenient to fit manual operable, meet when dosing bin loading, rotate and retract function, the whole and single crystal furnace are connected and the advantages that good sealing function.

Description

Technical Field

[0001] This utility model relates to the field of crystal pulling additive device, and more particularly to a device for adding additives during the crystal pulling process. Background Technology

[0002] Crystal pulling and doping is a key process in the growth of single-crystal silicon by doping with specific elements to control the electrical properties of silicon crystals.

[0003] Existing technologies, such as the utility model patent with publication number CN218115659U, disclose a raw material preparation device for Czochralski single-crystal silicon production. This patent includes a furnace, a batching box, and a hopper. A stirring motor is mounted on one end of the batching box via a mounting base. The top of the batching box is connected to the hopper via a feed pipe, which is equipped with a manual control valve. A partition plate is located at the bottom of the batching box, with one end of the partition plate penetrating the box and located on its outer side. This novel raw material preparation device for Czochralski single-crystal silicon production can quantitatively add additives, rapidly mix raw materials, and automatically discharge them, making it suitable for widespread use.

[0004] The inventors discovered during use that the conventional method of adding additives in the prior art involves adding them to the crucible during the initial feeding. At this time, the amount of material is large and the melting time can be as long as 4 hours. The additives are easily volatilized by prolonged heating and are extracted from the equipment with the atmosphere. The ideal feeding time is when the content is stable after the melting is completed, which is beneficial for the quality control of single crystals. Moreover, in the secondary feeding process, the old scheme requires a quartz cylinder as a tool, which is large in size and not conducive to operation. The conventional weight of additives is in the gram range, and the operation process involves replacing the atmosphere of the main and auxiliary chambers, which takes a long time. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies.

[0006] To solve the above-mentioned technical problems, this utility model provides a device for adding materials during the crystal pulling process, comprising: a hopper, one end of which is provided with a movable structure, the movable structure including a connecting rod, the connecting rod being threadedly connected to the hopper, a connecting frame being fixedly connected to the end of the connecting rod away from the hopper, an outer chamber being slidably connected to the arc surface of the connecting frame, a sliding column being fixedly connected to the arc surface of the connecting rod, a connecting block being fixedly connected to the arc surface of the connecting rod, a retaining ring being fixedly connected to the end of the outer chamber near the hopper, a slip ring being movably connected to the arc surface of the outer chamber, two magnetic blocks being fixedly connected inside the slip ring, and a mounting base being fixedly connected to the side of the slip ring away from the retaining ring, the mounting base being movably connected to the outer chamber.

[0007] The aforementioned components achieve the following effects: When the hopper needs to be moved, the slip ring is rotated to move it, which in turn moves the mounting base and the magnetic block. The magnetic block is then aligned with the end face of the connecting block. The slip ring is then moved to attract the magnetic block to the connecting block. The slip ring is then moved to move the connecting block, which in turn moves the connecting rod. The connecting rod moves the sliding column and the connecting frame, which slide against the inner wall of the outer chamber. The connecting rod moves the hopper. Finally, the slip ring is rotated to rotate the connecting block, which in turn rotates the connecting rod. The connecting rod moves the hopper, and the hopper pours the material.

[0008] Preferably, the connecting block has a D-shaped cross-section and is made of iron.

[0009] The effect achieved by the above components is that the connecting block has a D-shaped surface, which can obtain a larger magnetic force when it is parallel to the magnet mounting surface, greatly improving the mobility of the hopper.

[0010] Preferably, the retaining ring has an annular cross-section and is made of plastic.

[0011] The effect achieved by the above components is that the plastic material is relatively inexpensive, which greatly reduces the manufacturing cost of the retaining ring.

[0012] Preferably, the slip ring has a circular cross-section, and the slip ring and the retaining ring have the same dimensions.

[0013] Preferably, the retaining ring is provided with a fixing structure near the slip ring. The fixing structure includes a connecting rail, which is fixedly connected to the retaining ring. An installation rod is slidably connected to the inner wall of the connecting rail. A plurality of insertion holes are opened on the inner wall of the installation rod. Insert rods are slidably connected to the inner wall of the insertion holes. A sleeve rod is fixedly connected to the arc surface of the slip ring. The sleeve rod is slidably connected to the insert rod. A connecting pad is fixedly connected to the end of the insert rod away from the outer compartment.

[0014] The effect achieved by the above components is as follows: when the hopper needs to be moved, the connecting pad is pulled to move, the connecting pad drives the insert rod to move, the insert rod slides on the inner wall of the sleeve rod, then the insert rod separates from the insertion hole, then the sleeve rod is pulled to move, the sleeve rod drives the slip ring to move, thereby adjusting the position of the hopper. After the adjustment is completed, the insert rod is aligned with the appropriate insertion hole, and then the insert rod is inserted into the insertion hole for fixation.

[0015] Preferably, a spring is fitted onto the arc surface of the sleeve rod, and the two ends of the spring are fixedly connected to a slip ring and a connecting pad, respectively.

[0016] The effect achieved by the above components is as follows: when the hopper needs to be moved, the connecting pad is pulled to move it, the connecting pad drives the spring to stretch, then the insert rod is aligned with the insertion hole, and then the connecting pad spring is released to retract and drive the insert rod to be inserted into the insertion hole for fixation.

[0017] Preferably, a plurality of the insertion holes are evenly distributed on the mounting rod, and the diameter of the insertion holes is the same as the diameter of the mounting rod.

[0018] Compared with related technologies, the device for adding ingredients during the crystal pulling process provided by this utility model has the following beneficial effects:

[0019] By setting up a moving structure, the conventional method of adding materials in the existing technology involves adding the material to the crucible during the initial feeding. At this time, the amount of material is large and the melting time can be as long as 4 hours. The additives are easily volatilized by prolonged heating and are extracted from the equipment with the atmosphere. A good feeding time is when the content is stable after the melting is completed, which is beneficial for the quality control of single crystals. Moreover, in the secondary feeding process, the old scheme requires a quartz cylinder as a tool, which is large in size and not conducive to operation. The conventional weight of the additives is in the gram range. The operation process involves replacing the atmosphere of the main and auxiliary chambers, which takes a long time. This device achieves the effect of being convenient and suitable for manual operation, meeting the functions of loading the batching bin, rotating and pushing out and retracting, and connecting to the single crystal furnace with good sealing.

[0020] By setting a fixed structure, the moving device can be easily fixed in a suitable position, preventing the hopper from moving accidentally when it needs to be fixed. Attached Figure Description

[0021] Figure 1 A schematic diagram of a device for adding ingredients during crystal pulling process provided by this utility model;

[0022] Figure 2 for Figure 1 The diagram shows the moving structure.

[0023] Figure 3 for Figure 2 The diagram shows the internal structure.

[0024] Figure 4 for Figure 1 The diagram shows the fixed structure.

[0025] Figure 5 for Figure 4 The diagram shows a partial structural schematic.

[0026] The following are the labels in the diagram: 1. Hopper; 2. Moving structure; 21. Connecting rod; 22. Slip ring; 23. Outer chamber; 24. Mounting base; 25. Sliding column; 26. Connecting block; 27. Magnetic block; 28. Connecting frame; 29. ​​Retaining ring; 3. Fixed structure; 31. Connecting rail; 32. Mounting rod; 33. Insertion hole; 34. Connecting pad; 35. Spring; 36. Sleeve rod; 37. Insertion rod. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0028] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0029] Please see Figures 1 to 5 The present invention provides a device for adding ingredients during crystal pulling, comprising: a hopper 1, a movable structure 2 at one end of the hopper 1, and a fixed structure 3 at one end of the retaining ring 29 near the slip ring 22.

[0030] In the embodiments of this utility model, please refer to Figure 2 and Figure 3The movable structure 2 includes a connecting rod 21, which is threadedly connected to the hopper 1. A connecting frame 28 is fixedly connected to the end of the connecting rod 21 away from the hopper 1. An outer chamber 23 is slidably connected to the arc surface of the connecting frame 28. A sliding column 25 is fixedly connected to the arc surface of the connecting rod 21. A connecting block 26 is fixedly connected to the arc surface of the connecting rod 21. A retaining ring 29 is fixedly connected to the end of the outer chamber 23 near the hopper 1. A slip ring 22 is movably connected to the arc surface of the outer chamber 23. Two magnetic blocks 27 are fixedly connected inside the slip ring 22. A mounting base 24 is fixedly connected to the side of the slip ring 22 away from the retaining ring 29. The mounting base 24 is movably connected to the outer chamber 23. When it is necessary to move the hopper 1, the slip ring 22 is rotated to move it. The slip ring 22 drives the mounting base 24 to move, and the slip ring 22 drives the magnetic block 27 to move. Then, the magnetic block 27 is aligned with the end face of the connecting block 26. Then, the slip ring 22 is moved to attract the magnetic block 27 and the connecting block 26. Then, the slip ring 22 is moved to move the connecting block 26. The connecting block 26 drives the connecting rod 21 to move. The connecting rod 21 drives the sliding column 25 and the connecting frame 28 to move. The sliding column 25 and the connecting frame 28 slide on the inner wall of the outer chamber 23. The connecting rod 21 drives the hopper 1 to move. Then, the slip ring 22 is rotated to rotate the connecting block 26. The connecting block 26 drives the connecting rod 21 to rotate. The connecting rod 21 drives the hopper 1 to move. The hopper 1 pours the material. The cross-section of the connecting block 26 is D-shaped, and the connecting block 26 is an iron block. The connecting block 26 has a D-shaped surface, which can obtain a larger magnetic force when parallel to the magnet mounting surface, greatly improving the mobility of the hopper 1. The retaining ring 29 has a circular cross-section and is made of plastic. Plastic material is relatively inexpensive, which greatly reduces the manufacturing cost of the retaining ring 29. The slip ring 22 has a circular cross-section and the same size as the retaining ring 29.

[0031] In the embodiments of this utility model, please refer to Figure 4 and Figure 5The fixed structure 3 includes a connecting rail 31, which is fixedly connected to the retaining ring 29. The inner wall of the connecting rail 31 is slidably connected to the mounting rod 32. The inner wall of the mounting rod 32 is provided with several insertion holes 33. The inner wall of the insertion holes 33 is slidably connected to the insertion rod 37. The arc surface of the slip ring 22 is fixedly connected to the sleeve rod 36, which is slidably connected to the insertion rod 37. The end of the insertion rod 37 away from the outer compartment 23 is fixedly connected to the connecting pad 34. When it is necessary to move the hopper 1, the connecting pad 34 is pulled to move it. The connecting pad 34 drives the insert rod 37 to move. The insert rod 37 slides on the inner wall of the sleeve rod 36. Then the insert rod 37 separates from the insertion hole 33. Then the sleeve rod 36 is pulled to move it. The sleeve rod 36 drives the slip ring 22 to move, thereby adjusting the position of the hopper 1. After the adjustment is completed, the insert rod 37 is aligned with the appropriate insertion hole 33. Then the insert rod 37 is inserted into the insertion hole 33 for fixation. The arc surface of the sleeve rod 36 is fitted with a spring 35. The two ends of the spring 35 are fixedly connected to the slip ring 22 and the connecting pad 34, respectively. When it is necessary to move the hopper 1, pull the connecting pad 34 to move it. The connecting pad 34 drives the spring 35 to stretch. Then, align the insert rod 37 with the insertion hole 33. Then, release the connecting pad 34 and the spring 35 to retract, causing the insert rod 37 to be inserted into the insert rod 37 for fixation. Several insertion holes 33 are evenly distributed on the mounting rod 32. The diameter of the insertion hole 33 is the same as the diameter of the insert rod 37.

[0032] The working principle of the device for adding ingredients during crystal pulling provided by this utility model is as follows: When it is necessary to move the hopper 1, the slip ring 22 is rotated to move it. The slip ring 22 drives the mounting base 24 to move, and the slip ring 22 drives the magnetic block 27 to move. Then, the magnetic block 27 is aligned with the end face of the connecting block 26. Then, the slip ring 22 is moved to attract the magnetic block 27 to the connecting block 26. Then, the slip ring 22 is moved to drive the connecting block 26 to move. The connecting block 26 drives the connecting rod 21 to move, and the connecting rod 21 drives the sliding column 25 and... The connecting frame 28 moves, the sliding column 25 and the connecting frame 28 slide on the inner wall of the outer chamber 23, the connecting rod 21 drives the hopper 1 to move, and then the sliding ring 22 rotates to drive the connecting block 26 to rotate. The connecting block 26 drives the connecting rod 21 to rotate, and the connecting rod 21 drives the hopper 1 to move. The hopper 1 pours the material. The connecting block 26 has a D-shaped surface, which can obtain a larger magnetic force when parallel to the magnet mounting surface, greatly improving the mobility of the hopper 1. The plastic material is relatively inexpensive, which greatly reduces the manufacturing cost of the retaining ring 29.

[0033] When it is necessary to move the hopper 1, pull the connecting pad 34 to move it. The connecting pad 34 drives the insert rod 37 to move. The insert rod 37 slides on the inner wall of the sleeve rod 36. Then, the insert rod 37 separates from the insertion hole 33. Then, pull the sleeve rod 36 to move it. The sleeve rod 36 drives the slip ring 22 to move, thereby adjusting the position of the hopper 1. After adjustment, align the insert rod 37 with the appropriate insertion hole 33, and then insert the insert rod 37 into the insertion hole 33 for fixation. When it is necessary to move the hopper 1, pull the connecting pad 34 to move it. The connecting pad 34 drives the spring 35 to stretch it. Then, align the insert rod 37 with the insertion hole 33. Then, release the connecting pad 34 and the spring 35 to retract, causing the insert rod 37 to be inserted into the insertion hole 33 for fixation.

[0034] The circuits and controls involved in this utility model are all existing technologies, and will not be described in detail here.

[0035] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An apparatus for adding ingredients during crystal pulling, characterized in that, include: A hopper (1) is provided with a movable structure (2) at one end. The movable structure (2) includes a connecting rod (21), which is threadedly connected to the hopper (1). A connecting frame (28) is fixedly connected to the end of the connecting rod (21) away from the hopper (1). An outer chamber (23) is slidably connected to the arc surface of the connecting frame (28). A sliding column (25) is fixedly connected to the arc surface of the connecting rod (21). (21) has a connecting block (26) fixedly connected to its arc surface. The outer chamber (23) has a retaining ring (29) fixedly connected to one end near the hopper (1). The outer chamber (23) has a sliding ring (22) movably connected to its arc surface. The sliding ring (22) has two magnetic blocks (27) fixedly connected inside. The side of the sliding ring (22) away from the retaining ring (29) is fixedly connected to a mounting base (24). The mounting base (24) is movably connected to the outer chamber (23).

2. The apparatus for adding ingredients during crystal pulling according to claim 1, characterized in that, The connecting block (26) has a D-shaped cross section and is an iron block.

3. The apparatus for adding ingredients during crystal pulling according to claim 1, characterized in that, The cross-section of the retaining ring (29) is circular, and the retaining ring (29) is a plastic ring.

4. The apparatus for adding ingredients during crystal pulling according to claim 1, characterized in that, The cross-section of the slip ring (22) is circular, and the slip ring (22) has the same size as the retaining ring (29).

5. The apparatus for adding ingredients during crystal pulling according to claim 1, characterized in that, The retaining ring (29) is provided with a fixing structure (3) near the slip ring (22). The fixing structure (3) includes a connecting rail (31). The connecting rail (31) is fixedly connected to the retaining ring (29). The inner wall of the connecting rail (31) is slidably connected to an installation rod (32). The inner wall of the installation rod (32) is provided with several insertion holes (33). The inner wall of the insertion holes (33) is slidably connected to an insertion rod (37). The arc surface of the slip ring (22) is fixedly connected to a sleeve rod (36). The sleeve rod (36) is slidably connected to the insertion rod (37). The end of the insertion rod (37) away from the outer compartment (23) is fixedly connected to a connecting pad (34).

6. The apparatus for adding ingredients during crystal pulling according to claim 5, characterized in that, The arc surface of the sleeve (36) is fitted with a spring (35), and the two ends of the spring (35) are fixedly connected to the slip ring (22) and the connecting pad (34) respectively.

7. The apparatus for adding ingredients during crystal pulling according to claim 5, characterized in that, Several of the aforementioned insertion holes (33) are evenly distributed on the mounting rod (32), and the diameter of the insertion holes (33) is the same as the diameter of the mounting rod (37).

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