Feeding shovel for feeding quartz sand in quartz crucible manufacturing

Abstract

The utility model relates to a feeding shovel for feeding quartz sand in quartz crucible manufacturing, and relates to the technical field of quartz crucible production auxiliary equipment. The feeding shovel comprises a bottom plate, a first side plate, a second side plate and a rear end plate, wherein the first side plate and the second side plate are fixedly arranged on the two sides of the bottom plate correspondingly, and the rear end plate is fixedly arranged at one end of the bottom plate. The bottom plate, the first side plate, the second side plate and the rear end plate are encircled to form an accommodating cavity for accommodating quartz sand; the end, away from the rear end plate, of the bottom plate, the first side plate and the second side plate define a discharging port. A long-strip-shaped discharging hole is formed between the rear end plate and the bottom plate or between the first side plate and the bottom plate or between the second side plate and the bottom plate. The feeding shovel further comprises a blocking strip which is detachably arranged at the discharging hole and used for blocking the discharging hole. According to the feeding shovel, the long-strip-shaped discharging hole is formed in the feeding shovel, the area of an outlet of the discharging hole is reduced, quartz sand materials can be more accurately controlled to be laid to a certain part, and flying materials can be reduced to a certain degree.

Description

Technical Field

[0001] This application relates to the technical field of auxiliary equipment for the production of quartz crucibles, and particularly relates to a feeding shovel for feeding quartz sand in the manufacture of quartz crucibles. Background Art

[0002] A quartz crucible is a vessel made mainly of quartz sand. The quartz crucible can be used at a high temperature of 1450 °C. It has the advantages of high purity, strong heat resistance, good heat preservation, energy saving, and stable quality, so it has a wide range of uses. For example, the quartz crucible is an important auxiliary part for pulling single crystal silicon rods, used to hold polycrystalline silicon blocks, powders, and polycrystalline silicon melts, and plays a role in heat conduction and heat field control. Its performance plays a key role in the output of single crystal silicon.

[0003] In related technologies, when manufacturing a quartz crucible, first, high-purity quartz sand is placed into a high-purity graphite mold, and then it goes through processes such as vacuum loading and forming, vacuum arc melting, natural cooling and demolding, inspection, sandblasting, cleaning, etc. Finally, the obtained finished product is packaged.

[0004] To meet production requirements, a quartz crucible usually includes three layers: an inner layer, a middle layer, and an outer layer. From the inside to the outside, the three layers are made of quartz sand with gradually decreasing purity and gradually increasing particle size. The quartz sand in the inner layer must be high-purity quartz sand. The quartz crucible and the mold for manufacturing the quartz crucible are usually in a cylindrical shape, which includes a circular bottom and a cylindrical side wall. The connecting part between the bottom and the side wall is connected by an R-angle arc transition. One end of the cylindrical side wall far from the bottom has a port. The mold of the quartz crucible is set on a rotating device and can rotate around the rotation axis and tilt under the drive of the rotating device. At the tilting station, a feeding shovel is used to feed the quartz sand for the outer layer, middle layer, and inner layer to the circumferential side wall and the R-angle arc in sequence. Due to the centrifugal force of the mold rotation, the quartz sand sprinkled on the circumferential side wall and the R-angle arc of the mold can adhere to the inner wall of the mold. After feeding to a certain thickness, a forming rod is used to press the material to compact the quartz sand raw material and control its thickness. When the mold is in the vertical position, the bottom is fed; after the forming rod scrapes the material, a small hole will be left at the position of the center hole of the mold to limit the forming rod. Finally, after feeding, the feeding shovel is also used to fill the small hole.

[0005] The characteristics of the inner layer quartz sand, middle layer quartz sand, and outer layer quartz sand of the quartz crucible are different. During the feeding process using a traditional feeding shovel, since the raw material particles of the inner layer quartz sand are relatively light, it is easy to have a flying material phenomenon that is difficult to observe with the naked eye during the feeding process. Summary of the Utility Model

[0006] In order to improve the adjustability of the quartz sand feeding shovel and reduce the phenomenon of flying materials of light quartz sand, the present application provides a feeding shovel for feeding quartz sand in the manufacture of quartz crucibles.

[0007] The feeding shovel for feeding quartz sand in the manufacture of quartz crucibles provided by the present application adopts the following technical solutions:

[0008] A feeding shovel for feeding quartz sand in the manufacture of quartz crucibles includes a bottom plate, a first side plate and a second side plate respectively fixed on both sides of the bottom plate, and a rear end plate fixed at one end of the bottom plate;

[0009] The bottom plate, the first side plate, the second side plate and the rear end plate enclose a receiving cavity for receiving quartz sand; one end of the bottom plate away from the rear end plate and the first side plate and the second side plate enclose a discharge port;

[0010] A long strip-shaped discharge hole is provided between the rear end plate and the bottom plate, or between the first side plate and the bottom plate, or between the second side plate and the bottom plate;

[0011] The feeding shovel further includes a blocking strip detachably arranged at the discharge hole for blocking the discharge hole.

[0012] When in use, hold the rear end plate, and the receiving cavity formed by the bottom plate, the first side plate, the second side plate and the rear end plate is used to hold the quartz sand to be fed. When normally laying ordinary quartz sand materials, use the blocking strip to block the discharge hole, and the quartz sand materials are poured out from the discharge port, with high working efficiency; when it is necessary to lay the inner layer of light quartz sand or fill the central small hole and the unleveled groove, the blocking strip can be removed to open the discharge hole, so that the quartz sand materials are poured out from the long strip-shaped discharge hole. By adopting the above technical solutions, since the outlet area of the long strip-shaped discharge hole is small, the quartz sand materials can be more accurately controlled to be laid on a certain part, especially some places that are difficult to scrape with a forming rod, such as the place where the R-angle arc is connected to the bottom. The feeding shovel in the present application is convenient to use and can reduce the occurrence of flying materials to a certain extent.

[0013] Optionally, the first side plate and the second side plate are arranged in parallel at intervals, and the first side plate and the second side plate are respectively vertically fixed to both side edges of the bottom plate; the rear end plate is vertically fixed to the end position of the bottom plate, and the end parts of the first side plate and the second side plate away from the discharge port are respectively fixed to both ends of the rear end plate.

[0014] By adopting the above technical solutions, the feeding shovel in the present application has a large volume, is convenient to use and has high working efficiency.

[0015] Optionally, the end parts of the first side plate and the second side plate close to the discharge port are smoothly connected in an arc shape from the end face to the upper side face.

[0016] By adopting the above technical solution, the front end of the loading shovel is designed to be arc-shaped. Such a shape can avoid abrasion or scratching of people and objects during use, improving the safety and comfort of use.

[0017] Optionally, when the user holds the rear end plate and the discharge port faces forward, the first side plate is located on the left side of the bottom plate, the second side plate is located on the right side of the bottom plate, the discharge hole is located between the lower side of the rear end plate and the bottom plate and near the first side plate, and one end of the discharge hole penetrates to the outside of the first side plate.

[0018] Considering that usually most people operate the loading shovel with their right hand. By adopting the above technical solution, it is convenient for most operating habits. And the through-hole design of the discharge hole facilitates the installation and disassembly of the blocking strip.

[0019] Optionally, the blocking strip is in the shape of a strip plate, and a pulling rope is connected to one end of the blocking strip; a step surface is provided on the bottom surface of the discharge hole, and the height difference between the bottom plane and the top plane of the step surface is equal to the thickness of the blocking strip; when the blocking strip is located on the top plane of the step surface, it can block the channel of the discharge hole, and when the blocking strip is located on the bottom plane of the step surface, it can open the channel of the discharge hole; a magnetic attraction structure capable of magnetically attracting and cooperating with each other is further provided between the blocking strip and the bottom plane and the top plane of the step surface.

[0020] By adopting the above technical solution, when it is necessary to block the discharge hole with the blocking strip, the blocking strip is embedded on the top plane of the step surface; when it is necessary to open the discharge hole, the blocking strip can be placed on the bottom plane of the step surface; in this application, the installation and disassembly of the blocking strip are convenient and the connection is firm.

[0021] Optionally, the blocking strip is in the shape of a strip plate, and a pulling rope is connected to one end of the blocking strip; the height of the rear end plate is greater than the height of the first side plate, and a receiving groove for placing the blocking strip is provided on the rear end plate, and the notch of the receiving groove is located on the end face of the rear end plate and above the first side plate.

[0022] By adopting the above technical solution, when it is necessary to open the discharge hole, the removed blocking strip can be placed in the receiving groove of the rear end plate, which is not easy to be lost or damaged. At the same time, the design of the receiving groove also makes the overall structure of the loading shovel more compact and reasonable.

[0023] Optionally, a blocking bolt for blocking the notch of the receiving groove is screwed on the rear end plate, and the blocking bolt can be inserted into a position near the notch of the receiving groove.

[0024] By adopting the above technical solution, after placing the removed sealing strip in the receiving groove of the rear end plate, the receiving groove opening is sealed with a sealing bolt, thus preventing the sealing strip from falling out of the receiving groove.

[0025] Optionally, the length of the material discharge hole is 1 / 5 to 1 / 2 of the length of the entire rear end plate; the width dimension of the material discharge hole is 3 cm to 5 cm.

[0026] By adopting the above technical solution, the length dimension of the above-mentioned material discharge hole can not only ensure the connection strength of the overall structure, but also enable efficient feeding through the material discharge hole. The width dimension of the material discharge hole is 5 to 10 times the particle size of the quartz sand used in the inner layer of the quartz crucible, which can ensure the smooth flow of quartz sand during feeding and further prevent the phenomenon of material flying during the feeding process.

[0027] In this application, the opening degree of the material discharge hole can also be controlled by adjusting the position of the sealing strip, thereby controlling the outflow rate and outflow speed of the quartz sand; this design makes the feeding process more precisely controllable and effectively reduces the phenomenon of material flying.

[0028] In summary, this application includes at least one of the following beneficial technical effects:

[0029] 1. In this application, by providing a long strip-shaped material discharge hole on the feeding shovel, and utilizing the reduction of the outlet area of the material discharge hole, the spreading of the quartz sand material can be more precisely controlled to a certain position, especially some places that are difficult to scrape with a forming rod, such as the place where the R corner arc meets the bottom.

[0030] 2. The feeding shovel in this application is convenient to use and can reduce the occurrence of material flying to a certain extent.

[0031] 3. In this application, the installation and removal of the sealing strip are convenient, the connection is stable, and the removed sealing strip can be placed in the receiving groove of the rear end plate and is not easy to be lost. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is a three-dimensional structural schematic diagram of the feeding shovel in this application in Embodiment 1.

[0033] Figure 2 is Figure 1 a partial enlarged structural schematic diagram at A in

[0034] Figure 3 is a three-dimensional structural schematic diagram of the feeding shovel in this application in Embodiment 2.

[0035] Figure 4 is Figure 3 a partial enlarged structural schematic diagram at B in

[0036] In the figure:

[0037] 10. Bottom plate;

[0038] 20. First side plate;

[0039] 30. Second side plate;

[0040] 40. Rear end plate; 41. Receiving groove;

[0041] 50. Sealing strip; 51. Pulling rope;

[0042] 60. Magnetic attraction structure; 61. Permanent magnet; 62. Magnetic attraction iron block;

[0043] 70. Sealing bolt;

[0044] 80. Receiving cavity;

[0045] 90. Discharge port;

[0046] 100. Discharge hole;

[0047] 200. Step surface. Detailed implementation manner

[0048] The following will further elaborate on this application in conjunction with the attached Figure 1 - attached Figure 4 , and make a more detailed description of this application.

[0049] Example 1

[0050] Referring to Figure 1 and Figure 2 as shown, in this example, the loading shovel for loading quartz sand in the manufacturing of quartz crucibles includes a bottom plate 10, a first side plate 20 and a second side plate 30 respectively fixed on both sides of the bottom plate 10, and a rear end plate 40 fixed at one end of the bottom plate 10; the first side plate 20 and the second side plate 30 are arranged in parallel at intervals, and the first side plate 20 and the second side plate 30 are respectively vertically fixed to both side edges of the bottom plate 10; the bottom plate 10, the first side plate 20, the second side plate 30 and the rear end plate 40 enclose to form a receiving cavity 80 for accommodating quartz sand; one end of the bottom plate 10 away from the rear end plate 40 and the first side plate 20 and the second side plate 30 enclose to form a discharge port 90; the rear end plate 40 is vertically fixed to the end of the bottom plate 10, and the ends of the first side plate 20 and the second side plate 30 away from the discharge port 90 are respectively fixed to both ends of the rear end plate 40, and the ends of the first side plate 20 and the second side plate 30 close to the discharge port 90 are smoothly connected in an arc shape from the end face to the upper side face. Such an arc shape design can avoid abrasion or scratching of people and objects during use, and improve the safety and comfort of use.

[0051] Referring to Figure 1As shown, when the user holds the rear end plate 40 with the discharge port 90 facing forward, from the user's perspective, the first side plate 20 is on the left side of the bottom plate 10, and the second side plate 30 is on the right side of the bottom plate 10. In this application, a long strip-shaped discharge hole 100 is provided between the rear end plate 40 and the bottom plate 10, or between the first side plate 20 and the bottom plate 10, or between the second side plate 30 and the bottom plate 10; referring to Figure 2 As shown, in this embodiment, as a preferred solution, the discharge hole 100 is located between the lower side of the rear end plate 40 and the bottom plate 10 and close to the first side plate 20, and one end of the discharge hole 100 penetrates to the outside of the first side plate 20, which conforms to the operation habit of most people holding the feeding shovel with their right hand. The feeding shovel in this application further includes a sealing strip 50 detachably arranged at the discharge hole 100 for blocking the discharge hole 100, and the through design of the discharge hole 100 facilitates the installation and disassembly of the sealing strip 50.

[0052] Referring to Figure 2 As shown, the sealing strip 50 is in the shape of a strip plate, and one end of the sealing strip 50 is connected with a pull rope 51; a stepped surface 200 is arranged on the bottom surface of the discharge hole 100, and the height difference between the bottom plane and the top plane of the stepped surface 200 is equal to the thickness of the sealing strip 50; when the sealing strip 50 is located on the top plane of the stepped surface 200, it can block the channel of the discharge hole 100. At this time, the sealing strip 50 is in tight fit with the side wall of the discharge hole 100 to improve its sealing performance; when the sealing strip 50 is located on the bottom plane of the stepped surface 200, it can open the channel of the discharge hole 100. At this time, the upper side surface of the sealing strip 50 is flush with the top plane of the stepped surface 200, which is convenient for the outflow of quartz sand materials.

[0053] Referring to Figure 2 As shown, in this application, a magnetic attraction structure 60 capable of magnetic attraction cooperation is further arranged between the sealing strip 50 and the bottom plane and the top plane of the stepped surface 200. The magnetic attraction structure 60 is a permanent magnet 61 arranged on the sealing strip 50 and magnetic attraction iron blocks 62 corresponding to the permanent magnet 61 arranged on the bottom plane and the top plane of the stepped surface 200. When it is necessary to block the discharge hole 100 with the sealing strip 50, the sealing strip 50 is embedded on the top plane of the stepped surface 200; when it is necessary to open the discharge hole 100, the sealing strip 50 can be placed on the bottom plane of the stepped surface 200; in this application, the installation and disassembly of the sealing strip 50 are convenient and the connection is stable.

[0054] In this application, the length direction of the discharge hole 100 is arranged along the length direction of the rear end plate 40, and the length of the discharge hole 100 is 1 / 5 to 1 / 2 of the length of the entire rear end plate 40; the width dimension of the discharge hole 100 is 3 cm to 5 cm, that is, the width dimension of the discharge hole 100 is 5 to 10 times the particle size of the quartz sand particles used in the inner layer of the quartz crucible. This can ensure that the quartz sand flows out smoothly when feeding through the discharge hole 100, and at the same time prevent the phenomenon of flying materials during the feeding process.

[0055] The implementation principle is as follows: When forming a quartz crucible, the outer layer, middle layer, and inner layer quartz sand materials are sequentially filled on the inner wall of the rotating mold. The feeding shovel in this application is used for feeding. Hold the rear end plate 40 by hand. The accommodating cavity 80 formed by the bottom plate 10, the first side plate 20, the second side plate 30, and the rear end plate 40 is used to hold the quartz sand to be fed. When sequentially filling the outer layer and middle layer quartz sand materials, the discharge hole 100 is blocked by the blocking strip 50, and the quartz sand material is poured out from the discharge port 90, with high working efficiency; after the outer layer and middle layer quartz sand materials are sequentially filled, the inner layer quartz sand material begins to be filled. At this time, the blocking strip 50 can be removed, and the discharge hole 100 is opened, so that the quartz sand material is poured out from the long strip-shaped discharge hole 100. Due to the width limitation of the discharge hole 100, therefore, it is avoided that a large amount of powdery inner layer quartz sand material falls on the inner wall of the mold, flushing down the filled middle layer quartz sand material to the bottom of the mold and being thrown to the R corner arc of the mold, resulting in mixing at the R corner arc and affecting the appearance problem at the R corner arc. The same is true when filling the central small hole and the trench that is not leveled. Since the outlet area of the long strip-shaped discharge hole 100 is small, it can more accurately control the spreading of the quartz sand material to a certain part, especially some places that are difficult to scrape with a forming rod, such as the place where the R corner arc meets the bottom. The feeding shovel in this application is convenient to use and can reduce the occurrence of flying materials to a certain extent.

[0056] When filling the central small hole at the bottom of the mold, align the discharge hole 100 with the central small hole for filling. Although the inner layer quartz sand material will also be filled around the central small hole, resulting in a thicker thickness, compared with the change in the arc of the bottom of the quartz crucible caused by directly using the front discharge port 90 of the feeding shovel in the prior art, there is an obvious improvement effect. Further, in this application, the opening and closing degree of the discharge hole 100 can also be controlled by adjusting the position of the blocking strip 50, so as to control the outflow rate and outflow speed of the quartz sand; this design makes the feeding process more accurately controllable and effectively reduces the above-mentioned change in the arc of the bottom of the quartz crucible and the phenomenon of flying materials.

[0057] Example 2

[0058] Refer to Figure 3 and Figure 4As shown, this embodiment is substantially the same as Embodiment 1, except that in this embodiment, the height of the rear end plate 40 is greater than the height of the first side plate 20. A receiving groove 41 for placing the plug strip 50 is formed on the rear end plate 40. The notch of the receiving groove 41 is located on the end face of the rear end plate 40 and above the first side plate 20. A plug bolt 70 for plugging the notch of the receiving groove 41 is screwed on the rear end plate 40, and the plug bolt 70 can be inserted into a position near the notch in the receiving groove 41.

[0059] The implementation principle is as follows: When it is necessary to open the discharge hole 100, the removed plug strip 50 can be placed in the receiving groove 41 of the rear end plate 40, which is not easy to be lost or damaged. At the same time, the design of the receiving groove 41 also makes the overall structure of the loading shovel more compact and reasonable. After the removed plug strip 50 is placed in the receiving groove 41 of the rear end plate 40, the notch of the receiving groove 41 is plugged by the plug bolt 70, so as to prevent the plug strip 50 from falling out of the receiving groove 41.

[0060] The embodiments of this specific implementation manner are all preferred embodiments of this application, and do not limit the protection scope of this application accordingly. The same components are denoted by the same reference numerals. Therefore, all equivalent changes made according to the structure, shape, and principle of this application shall be covered within the protection scope of this application.

Claims

1. A feeding shovel for feeding quartz sand in the manufacture of quartz crucibles, characterized in that, It includes a bottom plate (10), a first side plate (20) and a second side plate (30) respectively fixed on both sides of the bottom plate (10), and a rear end plate (40) fixed at one end of the bottom plate (10); The bottom plate (10), the first side plate (20), the second side plate (30) and the rear end plate (40) enclose a receiving cavity (80) for receiving quartz sand; One end of the bottom plate (10) away from the rear end plate (40) and the first side plate (20) and the second side plate (30) enclose a discharge port (90); A long strip-shaped discharge hole (100) is opened between the rear end plate (40) and the bottom plate (10) or between the first side plate (20) and the bottom plate (10) or between the second side plate (30) and the bottom plate (10); The feeding shovel further includes a sealing strip (50) detachably arranged at the discharge hole (100) for blocking the discharge hole (100).

2. The charging shovel for charging quartz sand in the manufacture of quartz crucibles according to claim 1, characterized in that, The first side plate (20) and the second side plate (30) are arranged in parallel at intervals, and the first side plate (20) and the second side plate (30) are respectively vertically fixed to both side edges of the bottom plate (10); The rear end plate (40) is vertically fixed to the end position of the bottom plate (10), and the ends of the first side plate (20) and the second side plate (30) away from the discharge port (90) are respectively fixed to both ends of the rear end plate (40).

3. The charging shovel for charging quartz sand in the manufacture of quartz crucibles according to claim 1 or 2, characterized in that, The ends of the first side plate (20) and the second side plate (30) close to the discharge port (90) are smoothly connected in an arc shape from the end face to the upper side face.

4. The feeding shovel for feeding quartz sand in the manufacture of quartz crucibles according to claim 1 or 2, characterized in that, When the user holds the rear end plate (40) and the discharge port (90) faces forward, the first side plate (20) is located on the left side of the bottom plate (10), the second side plate (30) is located on the right side of the bottom plate (10), the discharge hole (100) is located between the lower side of the rear end plate (40) and the bottom plate (10) and close to the position of the first side plate (20), and one end of the discharge hole (100) penetrates to the outside of the first side plate (20).

5. The charging shovel for charging quartz sand in the manufacture of quartz crucibles according to claim 4, characterized in that, The sealing strip (50) is in the shape of a strip plate, and a pulling rope (51) is connected to one end of the sealing strip (50); A stepped surface (200) is arranged on the bottom surface of the discharge hole (100), and the height difference between the bottom plane and the top plane of the stepped surface (200) is equal to the thickness of the sealing strip (50); When the sealing strip (50) is located on the top plane of the stepped surface (200), it can block the channel of the discharge hole (100), and when the sealing strip (50) is located on the bottom plane of the stepped surface (200), it can open the channel of the discharge hole (100); A magnetic attraction structure (60) capable of magnetic attraction cooperation with each other is further arranged between the sealing strip (50) and the bottom plane and the top plane of the stepped surface (200).

6. The feeding shovel for feeding quartz sand in the manufacture of quartz crucibles according to claim 4, characterized in that, The plugging strip (50) is in the shape of a strip plate, and a pulling rope (51) is connected to one end of the plugging strip (50); the height of the rear end plate (40) is greater than the height of the first side plate (20), and a receiving groove (41) for placing the plugging strip (50) is formed in the rear end plate (40), and the notch of the receiving groove (41) is located on the end face of the rear end plate (40) and above the first side plate (20).

7. The charging shovel for charging quartz sand in the manufacture of quartz crucibles according to claim 6, characterized in that, A plugging bolt (70) for plugging the notch of the receiving groove (41) is screwed on the rear end plate (40), and the plugging bolt (70) can be inserted into a position close to the notch in the receiving groove (41).

8. The feeding shovel for feeding quartz sand in the manufacture of quartz crucibles according to claim 4, characterized in that, The length of the discharge hole (100) is 1 / 5 to 1 / 2 of the length of the entire rear end plate (40); the width dimension of the discharge hole (100) is 3 cm to 5 cm.

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