Quartz crucible manufacturing device and quartz scattering material collecting method for manufacturing quartz crucible

Abstract

The invention relates to a quartz scattered material collecting method for manufacturing a quartz crucible and a quartz crucible manufacturing device. According to the quartz sand feeding device, the collecting structure comprising the quartz sand storage barrel, the collecting mechanism and the driving mechanism is additionally arranged, and before quartz sand feeding is started, the driving mechanism drives the collecting mechanism to ascend along the opening; when quartz sand is fed and formed, the quartz sand scattered from the melting mold body is collected into the quartz sand storage barrel through the collecting mechanism; after quartz sand feeding and forming are finished, the driving mechanism drives the collecting mechanism to descend along the opening; therefore, the quartz sand scattered from the melting mold body 1 can be collected and recycled, and the manufacturing cost of the quartz crucible is effectively reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of crucible manufacturing, and in particular to a quartz crucible manufacturing device and a method for collecting quartz scattered materials for manufacturing quartz crucibles. Background Art

[0002] With the booming development of the new energy and semiconductor industries, large-sized monocrystalline silicon wafers have become increasingly important in both the photovoltaic and semiconductor fields. Quartz crucibles are essential products for manufacturing large-sized silicon wafers and are often in short supply due to the booming photovoltaic and semiconductor markets. Quartz crucibles are products manufactured after a series of processes such as melting, cutting, and washing using natural or synthetic quartz sand as raw materials. Currently, the main cost source of domestic quartz crucibles is quartz sand. Therefore, it is crucial to save quartz sand during the manufacturing process of quartz crucibles, and saving quartz sand has become the most effective way to reduce costs. Summary of the Invention

[0003] The purpose of the present invention is to provide a quartz crucible manufacturing device and a method for collecting quartz scattered materials for manufacturing quartz crucibles, which collect scattered quartz sand during the feeding and forming of quartz sand for recycling and reuse, effectively reducing the manufacturing cost of quartz crucibles.

[0004] According to some embodiments, the present invention provides a quartz crucible manufacturing device, including: a melting die structure, including a melting die body, a melting die rotating mechanism, and a melting die fixing frame. The melting die body is rotatably installed above the melting die fixing frame through a bearing and has a receiving cavity for receiving the fed quartz sand. The melting die rotating mechanism is rotatably installed below the melting die fixing frame and is used to drive the melting die body to rotate at a set process speed; a collecting structure, including a quartz sand storage cylinder, a collecting mechanism, and a driving mechanism. The bottom end of the quartz sand storage cylinder is hermetically and fixedly installed above the melting die fixing frame. The quartz sand storage cylinder has a storage cavity surrounding the outer wall of the melting die body, and the top end of the storage cavity has an opening. The collecting mechanism surrounds the outer wall of the melting die body and can rise and fall along the opening under the drive of the driving mechanism.

[0005] In some embodiments, the collecting mechanism includes: a collecting body extending towards the bottom end of the quartz sand storage cylinder; a connecting rod, one end of which is connected to the collecting body and the other end is connected to the driving shaft of the driving mechanism; a second bending part connected to the collecting body and extending towards the outer wall of the melting die body, and there is a second distance between the second bending part and the outer wall of the melting die body.

[0006] In some embodiments, an air extraction hole is further formed in the quartz sand storage barrel, and the air extraction hole is connected to an air extraction device and an aggregate tank through an exhaust pipe to suck the quartz sand collected in the quartz sand storage barrel into the aggregate tank.

[0007] In some embodiments, a material taking door is further provided on the quartz sand storage barrel, and opening the material taking door can take away the quartz sand collected in the quartz sand storage barrel.

[0008] In some embodiments, the driving mechanism includes a plurality of cylinders, and all the cylinders are controlled by the same solenoid valve for the air source.

[0009] According to some other embodiments, the present invention further provides a method for collecting quartz scattered materials for manufacturing a quartz crucible. Using the quartz crucible manufacturing device of the present invention, the method includes the following steps: before the quartz sand feeding starts, driving the collecting mechanism to rise along the opening by the driving mechanism so that the top surface of the collecting mechanism is higher than the top surface of the melting mold body; when the quartz sand is being fed and formed, collecting the quartz sand scattered from the melting mold body into the quartz sand storage barrel by the collecting mechanism; and after the quartz sand feeding and forming is completed, driving the collecting mechanism to descend along the opening by the driving mechanism so that the top surface of the collecting mechanism is flush with the top surface of the melting mold body.

[0010] In some embodiments, when an air extraction hole and a material taking door are further formed in the quartz sand storage barrel, the method further includes the following steps: connecting the air extraction hole to an air extraction device and an aggregate tank through an exhaust pipe to suck the quartz sand collected in the quartz sand storage barrel into the dust collection tank; and when the air extraction device fails, opening the material taking door to take away the quartz sand collected in the quartz sand storage barrel.

[0011] Through the above technical solution, by adding a collecting structure including a quartz sand storage barrel, a collecting mechanism and a driving mechanism, before the quartz sand feeding starts, driving the collecting mechanism to rise along the opening by the driving mechanism; when the quartz sand is being fed and formed, collecting the quartz sand scattered from the melting mold body into the quartz sand storage barrel by the collecting mechanism; after the quartz sand feeding and forming is completed, driving the collecting mechanism to descend along the opening by the driving mechanism; thereby it is possible to collect the quartz sand scattered from the melting mold body 1 for recycling, effectively reducing the manufacturing cost of the quartz crucible. Description of the Drawings

[0012] To more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for description in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0013] Figure 1 It is a schematic cross-sectional view after the quartz crucible manufacturing device according to an embodiment of the present invention rises;

[0014] Figure 2 It is a schematic three-dimensional view after the quartz crucible manufacturing device according to an embodiment of the present invention rises;

[0015] Figure 3 It is a schematic cross-sectional view after the quartz crucible manufacturing device according to an embodiment of the present invention descends;

[0016] Figure 4 It is a schematic three-dimensional view after the quartz crucible manufacturing device according to an embodiment of the present invention descends;

[0017] Figure 5 It is a flowchart of the method for collecting quartz scattered materials for manufacturing a quartz crucible according to an embodiment of the present invention.

[0018] Explanation of reference numerals:

[0019] 1. Melting die body; 2. Melting die rotating mechanism; 3. Melting die fixing frame;

[0020] 4. Quartz sand storage cylinder; 40. Storage cavity; 41. First bending part;

[0021] 5. Collection mechanism; 51. Collection body; 52. Connecting rod; 53. Second bending part;

[0022] 6. Driving mechanism; 61. Telescopic shaft;

[0023] 7. Air extraction hole; 8. Feeding door;

[0024] 9. Quartz sand crucible blank; 91. Quartz sand. Detailed implementation manners

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments.

[0026] It is found that during the manufacturing process of the quartz crucible, when the quartz sand is fed and formed, due to the high-speed rotation of the melting mold, whether it is traditional manual feeding or upgraded automated feeding, it inevitably causes the scattering of quartz sand, resulting in the waste of quartz sand and increasing the manufacturing cost of the quartz crucible. Therefore, the present invention provides a quartz crucible manufacturing device and a method for collecting scattered quartz materials for manufacturing the quartz crucible, which can collect the scattered quartz sand during the feeding and forming of the quartz sand for recycling and reuse, effectively reducing the manufacturing cost of the quartz crucible.

[0027] An embodiment of the present invention provides a quartz crucible manufacturing device.

[0028] Please refer to Figures 1 to 4 together, where Figure 1 is a schematic cross-sectional view of the quartz crucible manufacturing device after rising according to an embodiment of the present invention; Figure 2 is a three-dimensional schematic view of the quartz crucible manufacturing device after rising according to an embodiment of the present invention; Figure 3 is a schematic cross-sectional view of the quartz crucible manufacturing device after descending according to an embodiment of the present invention; Figure 4 is a three-dimensional schematic view of the quartz crucible manufacturing device after descending according to an embodiment of the present invention. For the convenience of description, in the following embodiments, the horizontal direction can be the X-axis or Y-axis direction in the Cartesian coordinate system, and the vertical direction is the Z-axis direction in the Cartesian coordinate system.

[0029] As Figures 1 to 4 shown, the quartz crucible manufacturing device described in this embodiment includes: a melting mold structure and a collection structure.

[0030] Specifically, the melting mold structure includes a melting mold body 1, a melting mold rotating mechanism 2, and a melting mold fixing frame 3. The melting mold body 1 is rotatably installed above the melting mold fixing frame 3 through a bearing, and the melting mold body 1 has a receiving cavity for receiving the fed quartz sand. The melting mold rotating mechanism 2 is rotatably installed below the melting mold fixing frame 3, and the melting mold rotating mechanism 2 is used to drive the melting mold body 1 to rotate at a set process speed to provide centrifugal force for the quartz sand to adhere to the inner wall of the melting mold body 1. The ways to fix and rotate the melting mold body 1 can refer to the existing implementation methods and will not be elaborated here. In actual work, the quartz sand put into the melting mold body 1 forms a quartz sand crucible blank 9 under the action of rotational centrifugal force, and from time to time, quartz sand 91 will break away from the melting mold body 1 and scatter outside the mold under the action of rotational centrifugal force.

[0031] Specifically, the collection structure includes a quartz sand storage cylinder 4, a collection mechanism 5, and a driving mechanism 6. The bottom end of the quartz sand storage cylinder 4 is fixedly installed in a sealed manner above the melting mold fixing frame 3. The quartz sand storage cylinder 4 has a storage cavity 40 surrounding the outer wall of the melting mold body 1, and the top end of the storage cavity 40 has an opening. The collection mechanism 5 surrounds the outer wall of the melting mold body 1 and can rise and fall along the opening under the drive of the driving mechanism 6. Among them, before the quartz sand feeding starts, the driving mechanism drives the collection mechanism to rise along the opening; after the quartz sand feeding and forming is completed, the driving mechanism drives the collection mechanism to fall along the opening.

[0032] The diameter of the opening is larger than the outer diameter of the collection mechanism 5, and the inner diameter of the collection mechanism 5 is larger than the outer diameter of the melting mold body 1, so as to ensure that the quartz sand storage cylinder 4 can be coaxially sleeved on the outer periphery of the melting mold body 1 and can accommodate the collection mechanism 5. Before the quartz sand feeding starts, the driving mechanism 6 drives the collection mechanism 5 to rise along the opening, so that the quartz sand scattered from the melting mold body 1 can be collected for recycling, effectively reducing the manufacturing cost of the quartz crucible.

[0033] In some embodiments, the top surface of the collection mechanism 5 after rising is higher than the top surface of the melting mold body 1, and the top surface of the collection mechanism 5 after falling is flush with the top surface of the melting mold body 1.

[0034] In some embodiments, the top end of the quartz sand storage cylinder 4 has a first bending portion 41 extending towards the outer wall of the melting mold body 1. A first spacing is formed between the first bending portion 41 and the outer wall of the melting mold body 1 to form the opening. The diameter of the opening is larger than the outer diameter of the collection mechanism 5, and the inner diameter of the collection mechanism 5 is larger than the outer diameter of the melting mold body 1, so as to ensure that the quartz sand storage cylinder 4 can be coaxially sleeved on the outer periphery of the melting mold body 1 and can accommodate the collection mechanism 5.

[0035] In some embodiments, the collection mechanism 5 includes: a collection body 51, a connecting rod 52, and a second bending portion 53. Specifically, the collection body 51 extends towards the bottom end of the quartz sand storage cylinder 4, and the collection body 51 can be a cylindrical plate member. One end of the connecting rod 52 is connected to the collection body 51, and the other end is connected to the drive shaft of the drive mechanism 6; the connecting rod 52 can be lifted and lowered under the drive of the drive shaft of the drive mechanism 6. The second bending portion 53 is connected to the collection body 51 and extends towards the outer wall of the melting mold body 1, and there is a second distance between the second bending portion 53 and the outer wall of the melting mold body 1. Among them, the second distance is smaller than the first distance. The setting of the second distance is to make the inner peripheral diameter of the collection mechanism 5 larger than the outer wall diameter of the melting mold body 1, so as to facilitate the lifting of the collection mechanism 5.

[0036] In some embodiments, an air extraction hole 7 is further opened on the quartz sand storage cylinder 4, and the air extraction hole 7 is connected to an air extraction device and an aggregate tank through an exhaust pipe to draw the quartz sand collected in the quartz sand storage cylinder 4 into the aggregate tank.

[0037] In some embodiments, a material taking door 8 is further provided on the quartz sand storage cylinder 4. Opening the material taking door 8 can take away the quartz sand collected in the quartz sand storage cylinder 4. The air extraction hole 7 and the material taking door 8 can be simultaneously provided on the quartz sand storage cylinder 4. When the air extraction device fails to extract air in time or due to other reasons, opening the material taking door 8 can timely take away the quartz sand collected in the quartz sand storage cylinder 4.

[0038] In some embodiments, the drive mechanism 6 is fixedly connected to the inner side wall of the quartz sand storage cylinder 4.

[0039] In some embodiments, the drive mechanism 6 includes a plurality of cylinders, and all the cylinders are controlled by the same solenoid valve to supply air source, so as to be able to synchronously drive the collection mechanism 5 under control. Specifically, the telescopic shafts 61 of all the cylinders are connected to the collection mechanism 5 (specifically connected to the connecting rod 52 of the collection mechanism 5). Before the quartz sand feeding starts, the gas control valves of all the cylinders receive the action instructions from the solenoid valve and drive all the cylinders to rise simultaneously, and the collection mechanism 5 follows the cylinders to rise, as Figures 1 to 2 shown. After the quartz sand feeding and forming is completed, the gas control valves of all the cylinders receive the action instructions from the solenoid valve and drive all the cylinders to descend simultaneously, and the collection mechanism 5 follows the cylinders to descend, as Figures 3 to 4 shown.

[0040] In some embodiments, the driving mechanism 6 may include two cylinders, and the two cylinders are symmetrically distributed along the axis of symmetry of the melting die body 1; in some embodiments, the driving mechanism 6 includes three or more cylinders, and the multiple cylinders are evenly distributed circumferentially along the inner side wall of the quartz sand storage cylinder 4.

[0041] Based on the same inventive concept, the present invention also provides a method for collecting quartz scattered materials for manufacturing a quartz crucible.

[0042] Please refer to Figure 5 , which is a flowchart of the method for collecting quartz scattered materials for manufacturing a quartz crucible according to an embodiment of the present invention. As Figure 5 shown, the method for collecting quartz scattered materials for manufacturing a quartz crucible in this embodiment uses the quartz crucible manufacturing device of the present invention Figures 1 to 4 described above. The method includes the following steps: S1. Before the quartz sand feeding starts, drive the collecting mechanism to rise along the opening through the driving mechanism, so that the top surface of the collecting mechanism is higher than the top surface of the melting die body; S2. When the quartz sand is fed and formed, collect the quartz sand scattered from the melting die body into the quartz sand storage cylinder through the collecting mechanism; and S3. After the quartz sand feeding and forming is completed, drive the collecting mechanism to descend along the opening through the driving mechanism, so that the top surface of the collecting mechanism is flush with the top surface of the melting die body.

[0043] In some embodiments, when the quartz sand storage cylinder 4 is further provided with an air extraction hole 7 and a material taking door 8, the method further includes the following steps: S21. Connect the air extraction hole to an air extraction device and an aggregate tank through an exhaust pipe to pump the quartz sand collected in the quartz sand storage cylinder into the dust collection tank; and S22. When the air extraction device fails, open the material taking door to take away the quartz sand collected in the quartz sand storage cylinder.

[0044] In the above embodiments of the present invention, by adding a collecting structure including a quartz sand storage cylinder, a collecting mechanism and a driving mechanism, before the quartz sand feeding starts, drive the collecting mechanism to rise along the opening through the driving mechanism; when the quartz sand is fed and formed, collect the quartz sand scattered from the melting die body into the quartz sand storage cylinder through the collecting mechanism; after the quartz sand feeding and forming is completed, drive the collecting mechanism to descend along the opening through the driving mechanism; thereby, it is possible to collect the quartz sand scattered from the melting die body 1 for recycling, effectively reducing the manufacturing cost of the quartz crucible.

[0045] It should be noted that the terms "including" and "having" and their variants involved in the documents of the present invention are intended to cover non-exclusive inclusion. The terms "first", "second", etc. are used to distinguish similar objects and do not necessarily have to be used to describe a specific order or sequence. Unless the context clearly indicates otherwise, it should be understood that the data used in this way can be interchanged under appropriate circumstances. The term "one or more" depends at least in part on the context and can be used to describe a feature, structure or property in a singular sense, or can be used to describe a combination of features, structures or features in a plural sense. The term "based on" can be understood as not necessarily aiming to express a set of exclusive factors, but rather, alternatively, also at least in part depending on the context, allowing for the existence of other factors that are not necessarily explicitly described. Additionally, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other. Furthermore, in the above description, the description of well-known components and technologies is omitted to avoid unnecessarily confusing the concepts of the present invention. In each of the above embodiments, the focus of each embodiment is on the differences from other embodiments. For the same / similar parts between the embodiments, reference can be made to each other.

[0046] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can still be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A quartz crucible manufacturing device, characterized in that, Including: The melting die structure includes a melting die body, a melting die rotating mechanism, and a melting die fixing frame. The melting die body is rotatably mounted above the melting die fixing frame through a bearing and has a receiving cavity for receiving the quartz sand to be put in. The melting die rotating mechanism is rotatably mounted below the melting die fixing frame and is used to drive the melting die body to rotate at a set process speed. The collection structure includes a quartz sand storage cylinder, a collection mechanism, and a driving mechanism. The bottom end of the quartz sand storage cylinder is hermetically and fixedly mounted above the melting die fixing frame. The quartz sand storage cylinder has a storage cavity surrounding the outer wall of the melting die body, and the top end of the storage cavity has an opening. The collection mechanism surrounds the outer wall of the melting die body and can rise and fall along the opening under the drive of the driving mechanism.

2. The quartz crucible manufacturing apparatus according to claim 1, characterized in that, The top surface of the collection mechanism after rising is higher than the top surface of the melting die body, and the top surface of the collection mechanism after falling is flush with the top surface of the melting die body.

3. The quartz crucible manufacturing apparatus according to claim 1, characterized in that, The top end of the quartz sand storage cylinder has a first bent portion extending towards the outer wall of the melting die body, and a first spacing is formed between the first bent portion and the outer wall of the melting die body to form the opening.

4. The quartz crucible manufacturing apparatus according to claim 1, characterized in that, The collection mechanism includes: a collection body extending towards the bottom end of the quartz sand storage cylinder; a connecting rod, one end of which is connected to the collection body and the other end is connected to the drive shaft of the driving mechanism; a second bent portion connected to the collection body and extending towards the outer wall of the melting die body, and a second spacing is formed between the second bent portion and the outer wall of the melting die body.

5. The quartz crucible manufacturing apparatus according to claim 1, characterized in that, An air extraction hole is also provided on the quartz sand storage cylinder, and the air extraction hole is connected to an air extraction device and an aggregate tank through an exhaust pipe to draw the quartz sand collected in the quartz sand storage cylinder into the aggregate tank.

6. The quartz crucible manufacturing apparatus according to claim 1 or 5, characterized in that, A material taking door is also provided on the quartz sand storage cylinder, and opening the material taking door can take away the quartz sand collected in the quartz sand storage cylinder.

7. The quartz crucible manufacturing apparatus according to claim 1, wherein, The driving mechanism is fixedly connected to the inner side wall of the quartz sand storage cylinder.

8. The quartz crucible manufacturing apparatus according to claim 1, wherein, The driving mechanism includes a plurality of cylinders, and all the cylinders are controlled for the air source by the same solenoid valve.

9. A method for collecting quartz scrap in the manufacture of quartz crucibles, characterized in that, Using the quartz crucible manufacturing device according to any one of claims 1 to 8, the method includes the following steps: Before the quartz sand feeding starts, drive the collection mechanism to rise along the opening through the driving mechanism, so that the top surface of the collection mechanism is higher than the top surface of the melting die body; When the quartz sand is being fed and formed, collect the quartz sand scattered from the melting die body into the quartz sand storage cylinder through the collection mechanism; And After the quartz sand feeding and forming is completed, drive the collection mechanism to descend along the opening through the driving mechanism, so that the top surface of the collection mechanism is flush with the top surface of the melting die body.

10. The method for collecting quartz scraps for manufacturing a quartz crucible according to claim 9, characterized in that, When an air extraction hole and a material taking door are also provided on the quartz sand storage cylinder, the method further includes the following steps: Connect the air extraction hole to an air extraction device and an aggregate tank through an exhaust pipe to draw the quartz sand collected in the quartz sand storage cylinder into the dust collection tank; and When the air extraction device fails, open the material taking door to take away the quartz sand collected in the quartz sand storage cylinder.

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