Monocrystalline silicon screening device

Abstract

The utility model relates to the technical field of monocrystalline silicon processing, in particular to a monocrystalline silicon screening device. The monocrystalline silicon screening device comprises a workbench and a guide sleeve erected in the middle of the workbench, and guide grooves are symmetrically formed in the guide sleeve. The supporting sleeve is installed in the guide sleeve in a sliding mode, guide blocks in sliding fit with the guide grooves are symmetrically installed on the supporting sleeve, a driving assembly used for driving the supporting sleeve to slide up and down along the guide sleeve is installed on the workbench, and the driving assembly is in transmission fit with the guide blocks; the multiple screening discs are evenly installed on the supporting sleeve, screening assemblies are installed in the multiple screening discs, a power mechanism for driving the screening assemblies to conduct rotary screening is installed in the supporting sleeve, a discharging opening is formed in one side of each screening disc, and a material guiding mechanism is installed on the supporting sleeve; the collecting disc is arranged at the bottom end of the supporting sleeve. The monocrystalline silicon screening device provided by the utility model has the advantages of high screening efficiency and convenience in discharging.

Description

Technical Field

[0001] The utility model relates to the technical field of single crystal silicon processing, in particular to a single crystal silicon screening device. Background Art

[0002] Monocrystalline silicon is a single crystal of silicon. It has a basically complete lattice structure and different properties in different directions. It is a good semiconductor material. It has excellent physical, chemical, mechanical and semiconductor properties. Therefore, it is widely used as a basic material in the manufacturing process of large-scale integrated circuits, semiconductor devices and photovoltaic solar cells. Monocrystalline silicon is made of high-purity polycrystalline silicon in a single crystal furnace. The Czochralski method is the main production method of monocrystalline silicon.

[0003] In the processing of monocrystalline silicon, problems such as uneven screening particles and inconvenient material feeding may easily occur during the screening process of monocrystalline silicon, thus affecting the screening efficiency of monocrystalline silicon.

[0004] Therefore, it is necessary to provide a new single crystal silicon screening device to solve the above technical problems. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a single crystal silicon screening device.

[0006] The single crystal silicon screening device provided by the utility model comprises:

[0007] A workbench, and a guide sleeve mounted in the middle of the workbench, wherein the guide sleeve is symmetrically provided with guide grooves;

[0008] The support sleeve is slidably installed in the guide sleeve, and the support sleeve is symmetrically provided with a guide block that is slidably matched with the guide groove. The workbench is provided with a driving assembly for driving the support sleeve to slide up and down along the guide sleeve, and the driving assembly is in transmission cooperation with the guide block;

[0009] There are several screening discs, and the screening discs are evenly mounted on the supporting sleeve, and screening components are installed in the screening discs, and a power mechanism for driving the screening component to rotate and screen is installed in the supporting sleeve. A discharge port is opened on one side of the screening disc, and a material guide mechanism is installed on the supporting sleeve;

[0010] The collecting plate is arranged at the bottom end of the supporting sleeve.

[0011] Preferably, the drive assembly is provided with two groups, and the two groups of drive assemblies are symmetrically distributed based on the guide sleeve. The drive assembly includes a limit frame, and the limit frame is fixedly installed on the workbench. A lead screw is rotatably installed in a groove opened in the limit frame, and a servo motor for driving the lead screw to rotate is installed on the workbench. A transmission block is threadedly installed on the lead screw, and a transmission plate is hinged on the transmission block, and the end of the transmission plate facing away from the transmission block is hinged to the guide block.

[0012] Preferably, the transmission block is slidably matched with a groove formed in the limiting frame.

[0013] Preferably, the bottom end of the screening disc is provided with a dropping cavity for the screening assembly to perform screening under the drive of a power mechanism, and the screening assembly includes a rotating sleeve, which is rotatably mounted on the screening disc and sleeved on a supporting sleeve, and a screen is mounted on the rotating sleeve, and an inner gear ring that cooperates with the power mechanism is mounted on the inner side wall of the rotating sleeve, wherein the mesh apertures of the screens in the plurality of screening discs decrease successively from top to bottom.

[0014] Preferably, the power mechanism includes a transmission rod, which is rotatably mounted in a support sleeve, and a transmission gear meshing with an inner gear ring is mounted on the transmission rod, and a power motor for driving the transmission rod to rotate is fixedly mounted on the top of the support sleeve.

[0015] Preferably, the material guiding mechanism comprises a support frame, the support frame is fixedly mounted on the support sleeve, and a plurality of inclined material guiding grooves are evenly mounted on the support frame, the material guiding groove is provided with a material guiding port docked with a material outlet, a rotary rod is rotatably mounted on one side of the material outlet, a bin door for sealing the material outlet is fixedly mounted on the rotary rod, a pinion is fixedly mounted on the top of the rotary rod, an electric rod is fixedly mounted on one side of the pinion on the support frame, a rack plate is fixedly mounted on the output end of the electric rod, and the rack plate meshes with the pinion.

[0016] Preferably, a through hole is formed at the bottom end of the collecting tray, and a rubber plug is inserted into the through hole.

[0017] Compared with the related art, the single crystal silicon screening device provided by the utility model has the following beneficial effects:

[0018] 1. The utility model provides a single crystal silicon screening device, which can efficiently rotate and separate single crystal silicon by arranging a plurality of rod screening discs, and arranging screening components in the screening discs. At the same time, the screening discs are arranged on the supporting sleeves, and the supporting sleeves can slide up and down along the guide sleeves under the drive of the driving components, thereby improving the screening efficiency of single crystal silicon;

[0019] 2. By setting up the material guiding mechanism and utilizing the coordination of the support frame, material guiding trough, material guiding port, electric rod, rack plate, rotary rod, bin door and pinion, it is convenient to discharge the material quickly after screening and improve the material discharging speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic structural diagram of a preferred embodiment of the single crystal silicon screening device provided by the utility model;

[0021] Figure 2 A schematic diagram of the structure of a collecting tray and a material guiding mechanism installed on the support sleeve provided by the utility model;

[0022] Figure 3 A schematic diagram of the structure in which a screening disc is installed on the support sleeve provided by the utility model;

[0023] Figure 4 A schematic diagram of the structure of the screening assembly provided by the utility model;

[0024] Figure 5 for Figure 2 A partial enlarged view of A shown;

[0025] Figure 6 A structural schematic diagram of a material guiding mechanism installed on a supporting sleeve provided by the utility model.

[0026] Numbers in the figure: 1. workbench; 2. guide sleeve; 201. guide groove; 3. support sleeve; 31. guide block; 4. drive assembly; 41. limit frame; 42. lead screw; 43. servo motor; 44. transmission block; 45. transmission plate; 5. screening disc; 501. discharge port; 6. screening assembly; 61. rotating sleeve; 62. screen; 63. inner gear ring; 7. power mechanism; 71. transmission rod; 72. power motor; 73. transmission gear; 8. material guiding mechanism; 81. support frame; 82. material guiding groove; 801. material guiding port; 83. electric rod; 84. rack plate; 85. rotary rod; 86. bin door; 87. pinion; 9. collecting tray; 91. rubber plug. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0028] The specific implementation of the present utility model is described in detail below in conjunction with specific embodiments.

[0029] See also Figures 1 to 5 The present utility model provides a single crystal silicon screening device, the single crystal silicon screening device comprising:

[0030] A workbench 1, and a guide sleeve 2 mounted in the middle of the workbench 1, wherein guide grooves 201 are symmetrically formed on the guide sleeve 2;

[0031] The support sleeve 3 is slidably installed in the guide sleeve 2, and a guide block 31 slidably matched with the guide groove 201 is symmetrically installed on the support sleeve 3. A driving component 4 for driving the support sleeve 3 to slide up and down along the guide sleeve 2 is installed on the workbench 1, and the driving component 4 is in transmission cooperation with the guide block 31;

[0032] There are several screening discs 5, and the several screening discs 5 are evenly installed on the supporting sleeve 3, and the screening components 6 are installed in the several screening discs 5, and the supporting sleeve 3 is installed with a power mechanism 7 for driving the screening component 6 to rotate and screen, a discharge port 501 is opened on one side of the screening disc 5, and a material guide mechanism 8 is installed on the supporting sleeve 3;

[0033] The collecting tray 9 is arranged at the bottom end of the supporting sleeve 3 .

[0034] The bottom end of the screening disc 5 is provided with a material drop cavity for the screening assembly 6 to perform screening under the drive of the power mechanism 7. The screening assembly 6 includes a rotating sleeve 61, which is rotatably mounted on the screening disc 5 and sleeved on the supporting sleeve 3. A screen 62 is mounted on the rotating sleeve 61. An inner gear ring 63 that cooperates with the power mechanism 7 is mounted on the inner side wall of the rotating sleeve 61. The mesh apertures of the screens 62 in the plurality of screening discs 5 decrease from top to bottom.

[0035] The power mechanism 7 includes a transmission rod 71, which is rotatably installed in the support sleeve 3, and a transmission gear 73 meshing with the inner gear ring 63 is installed on the transmission rod 71. A power motor 72 for driving the transmission rod 71 to rotate is fixedly installed at the top of the support sleeve 3.

[0036] It should be noted that: when in use, the monocrystalline silicon material to be screened is poured onto the topmost screening disc 5, and then the power motor 72 of the power mechanism 7 is started. The power motor 72 drives the transmission rod 71 to rotate, thereby the transmission rod 71 drives the transmission gear 73 to rotate, and the transmission gear 73 engages with the inner ring gear 63, thereby driving the inner ring gear 63 to synchronously drive the rotating sleeve 61 to rotate, thereby driving the screen 62 to rotate in the screening disc 5, and then using the layers of screens 62 to screen one by one, so as to achieve separation of monocrystalline silicon of different diameters. While rotating and screening, the support sleeve 3 is driven by the drive assembly 4 to move up and down along the guide sleeve 2, so as to further improve the screening efficiency. After sufficient screening, the screened monocrystalline silicon of different diameters can be guided out one by one by the material guiding mechanism 8, so as to achieve rapid material unloading after screening.

[0037] It is worth noting that the screen 62 here is hard and rigid. When it rotates, it screens the monocrystalline silicon and discharges it from the blanking cavity of the screening plate 5. The mesh apertures of the screens 62 in several screening plates 5 are designed to decrease from top to bottom, so that the particles of monocrystalline silicon are screened one by one from large to small and retained on the screen 62 of the interlayer.

[0038] In the embodiments of the present invention, please refer to Figures 1 to 5 The driving assembly 4 is provided with two groups, and the two groups of driving assemblies 4 are symmetrically distributed based on the guide sleeve 2. The driving assembly 4 includes a limit frame 41, and the limit frame 41 is fixedly installed on the workbench 1. A lead screw 42 is rotatably installed in the groove opened by the limit frame 41. A servo motor 43 for driving the lead screw 42 to rotate is installed on the workbench 1. A transmission block 44 is threadedly installed on the lead screw 42, and a transmission plate 45 is hinged on the transmission block 44. The end of the transmission plate 45 away from the transmission block 44 is hinged to the guide block 31;

[0039] The transmission block 44 is slidably matched with the groove formed in the limiting frame 41 .

[0040] It should be noted that: when the driving component 4 is in use, the servo motor 43 is started to drive the lead screw 42 to rotate alternately forward and reverse in the limit frame 41, thereby driving the transmission block 44 to move back and forth along the limit frame 41. When moving back and forth, the transmission plate 45 pulls the guide block 31 to drive the support sleeve 3 to move up and down along the guide sleeve 2, thereby facilitating the up and down vibration of the screen while rotating the screen.

[0041] In the embodiments of the present invention, please refer to Figures 1 to 5 The material guiding mechanism 8 comprises a support frame 81, which is fixedly mounted on the support sleeve 3, and a plurality of inclined material guiding grooves 82 are evenly mounted on the support frame 81, and the material guiding groove 82 is provided with a material guiding port 801 docking with the material outlet 501, a rotary rod 85 is rotatably mounted on one side of the material outlet 501, a bin door 86 for sealing the material outlet 501 is fixedly mounted on the rotary rod 85, a pinion 87 is fixedly mounted on the top of the rotary rod 85, an electric rod 83 is fixedly mounted on one side of the pinion 87 on the support frame 81, a rack plate 84 is fixedly mounted on the output end of the electric rod 83, and the rack plate 84 is meshed with the pinion 87;

[0042] It should be noted that when the material guiding mechanism 8 is in use, after sufficient screening, the electric rod 83 is started to drive the rack plate 84 to move forward, and the rack plate 84 engages with the pinion 87, thereby driving the rotary rod 85 to drive the bin door 86 to turn away from the discharge port 501, and then when the screen 62 continues to rotate, the single crystal silicon on the screen 62 is thrown from the discharge port 501 into the material guiding trough 82, thereby completing the discharge.

[0043] It is worth noting that in order to allow the material guide chute 82 to discharge the material smoothly, it is tilted to facilitate the single crystal silicon to roll down by its own weight and can be collected at the outlet of the material guide chute 82.

[0044] In the embodiments of the present invention, please refer to Figures 1 to 5 A through hole is formed at the bottom end of the collecting plate 9, and a rubber plug 91 is inserted into the through hole.

[0045] It should be noted that: in this way, the collecting tray 9 collects the single crystal silicon with the smallest diameter particles, and after collection, the collected single crystal silicon is taken out by opening the rubber plug 91. Here, in order to facilitate the material removal, the collecting tray 9 is detachably connected by screws, which is convenient for later disassembly to take out all the single crystal silicon inside.

[0046] The working principle of the single crystal silicon screening device provided by the utility model is as follows:

[0047] When in use, the monocrystalline silicon material to be screened is poured onto the topmost screening disc 5, and then the power motor 72 of the power mechanism 7 is started, the power motor 72 drives the transmission rod 71 to rotate, so that the transmission rod 71 drives the transmission gear 73 to rotate, and the transmission gear 73 meshes with the inner gear ring 63, thereby driving the inner gear ring 63 to synchronously drive the rotating sleeve 61 to rotate, thereby driving the screen 62 to rotate in the screening disc 5, and then using the layers of screens 62 to perform screening one by one, so as to achieve the separation of monocrystalline silicon of different diameters. While rotating and screening, the servo motor 43 is started to drive the lead screw 42 to alternately rotate forward and reverse in the limit frame 41, thereby driving the transmission block 44 to move back and forth along the limit frame 41. When moving back and forth, the transmission plate 45 pulls the guide block 31 to drive the support sleeve 3 to move up and down along the guide sleeve 2, so as to facilitate the up and down vibration screening while rotating and screening;

[0048] After sufficient screening, the electric rod 83 is started to drive the rack plate 84 to move forward, and the rack plate 84 engages with the pinion 87, thereby driving the rotary rod 85 to drive the bin door 86 to rotate away from the discharge port 501. Then, when the screen 62 continues to rotate, the single crystal silicon on the screen 62 is thrown from the discharge port 501 into the guide trough 82, thereby completing the discharge.

[0049] The circuits and controls involved in the present invention are all prior art and will not be described in detail here.

[0050] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A single crystal silicon screening device, comprising: A workbench (1), and a guide sleeve (2) mounted in the middle of the workbench (1), wherein the guide sleeve (2) is symmetrically provided with guide grooves (201); It is characterized by further comprising: A support sleeve (3) is slidably mounted in the guide sleeve (2), and a guide block (31) slidably matched with the guide groove (201) is symmetrically mounted on the support sleeve (3), and a driving component (4) for driving the support sleeve (3) to slide up and down along the guide sleeve (2) is mounted on the workbench (1), and the driving component (4) is in driving cooperation with the guide block (31); A plurality of screening discs (5) are provided, the plurality of screening discs (5) are evenly mounted on the support sleeve (3), and a screening assembly (6) is mounted in each of the screening discs (5), a power mechanism (7) for driving the screening assembly (6) to rotate and screen is mounted in the support sleeve (3), a material discharge port (501) is provided on one side of the screening disc (5), and a material guide mechanism (8) is mounted on the support sleeve (3); The collecting plate (9) is arranged at the bottom end of the supporting sleeve (3).

2. The single crystal silicon screening device according to claim 1, characterized in that: The drive assembly (4) is provided with two groups, and the two groups of the drive assembly (4) are symmetrically distributed based on the guide sleeve (2). The drive assembly (4) comprises a limit frame (41), the limit frame (41) is fixedly mounted on the workbench (1), a lead screw (42) is rotatably mounted in a groove provided in the limit frame (41), a servo motor (43) for driving the lead screw (42) to rotate is mounted on the workbench (1), a transmission block (44) is threadedly mounted on the lead screw (42), a transmission plate (45) is hingedly connected to the transmission block (44), and an end of the transmission plate (45) facing away from the transmission block (44) is hingedly connected to the guide block (31).

3. The single crystal silicon screening device according to claim 2, characterized in that: The transmission block (44) is slidably matched with a groove provided in the limiting frame (41).

4. The single crystal silicon screening device according to claim 1, characterized in that: The bottom end of the screening disc (5) is provided with a material dropping cavity for the screening assembly (6) to perform screening under the drive of the power mechanism (7). The screening assembly (6) comprises a rotating sleeve (61) which is rotatably mounted on the screening disc (5) and sleeved on the supporting sleeve (3). A screen (62) is mounted on the rotating sleeve (61). An inner gear ring (63) which is in transmission cooperation with the power mechanism (7) is mounted on the inner side wall of the rotating sleeve (61). The mesh apertures of the screens (62) in the plurality of screening discs (5) decrease in order from top to bottom.

5. The single crystal silicon screening device according to claim 4, characterized in that: The power mechanism (7) comprises a transmission rod (71) which is rotatably mounted in the support sleeve (3), and a transmission gear (73) meshing with the inner gear ring (63) is mounted on the transmission rod (71), and a power motor (72) for driving the transmission rod (71) to rotate is fixedly mounted on the top end of the support sleeve (3).

6. The single crystal silicon screening device according to claim 1, characterized in that: The material guiding mechanism (8) comprises a support frame (81), the support frame (81) is fixedly mounted on the support sleeve (3), and a plurality of inclined material guiding grooves (82) are evenly mounted on the support frame (81), the material guiding groove (82) is provided with a material guiding port (801) docking with the material outlet (501), a rotary rod (85) is rotatably mounted on one side of the material outlet (501), a bin door (86) for sealing the material outlet (501) is fixedly mounted on the rotary rod (85), a pinion (87) is fixedly mounted on the top of the rotary rod (85), an electric rod (83) is fixedly mounted on one side of the pinion (87) on the support frame (81), a rack plate (84) is fixedly mounted on the output end of the electric rod (83), and the rack plate (84) is meshed with the pinion (87).

7. The single crystal silicon screening device according to claim 1, characterized in that: A through hole is provided at the bottom end of the collecting plate (9), and a rubber plug (91) is inserted into the through hole.

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