Primary polycrystalline silicon bar polishing device

Abstract

The utility model relates to the technical field of polycrystalline silicon production, in particular to a primary polycrystalline silicon bar polishing device, which is characterized in that two groups of fixed plates are arranged on an operation table, a fixed conveying roller is rotatably connected between the two groups of fixed plates, a movable plate is connected onto the two groups of fixed plates in a sliding manner, and a first adjusting component is arranged on each fixed plate; an auxiliary conveying roller is rotationally connected between the two sets of movable plates, the fixed conveying roller and the auxiliary conveying roller are driven by a power device, conveying threads are arranged on the fixed conveying roller and the auxiliary conveying roller, the rotating directions of the conveying threads are opposite, the operation table is slidably connected with a driving box, and an output shaft of the driving box is connected with a grinding piece. And a second adjusting assembly is arranged on the operation table and used for adjusting the distance between the driving box and the fixed conveying roller, and the efficient and stable polishing device is high in equipment adaptability, efficient and stable in polishing process, excellent in environmental protection performance, convenient to operate and discharge and convenient to maintain.

Description

TECHNICAL FIELD

[0001] The utility model relates to the polycrystal silicon production technical field, especially in raw polycrystal silicon rod material polishing device. BACKGROUND

[0002] In the production process of polycrystal silicon, affected by various factors, some rod materials with surface defects, unevenness, black skin and other abnormal conditions will be produced. If these abnormal rod materials are directly used in subsequent crushing process, it will seriously affect the product quality, and even may cause problems in the entire production process.

[0003] At present, the conventional method for surface treatment of polycrystal silicon rod material has many defects, for example, the traditional chemical treatment method is difficult to completely remove the physical defects such as protrusions or depressions on the surface; and the method of using artificial hand-held tungsten carbide hammer to remove abnormal skin part, and then through a series of complex process treatment such as mixed acid soaking, pure water rinsing and drying, has many disadvantages, on the one hand, the artificial processing efficiency is low, the labor intensity is large, which greatly increases the labor cost; on the other hand, the silicon recovery rate is low, the abnormal loss ratio is large, and the eligibility after processing cannot be guaranteed, which cannot meet the needs of large-scale industrial production.

[0004] Therefore, it is urgent to develop an equipment specially for efficient and accurate polishing treatment of the surface of polycrystal silicon abnormal rod material to solve the above problems existing in the prior art. UTILITY MODEL CONTENT

[0005] In view of the deficiencies in the above background art, the utility model provides a raw polycrystal silicon rod material polishing device, which solves the technical problem of low artificial processing efficiency, high labor intensity and greatly increased labor cost.

[0006] The technical scheme of the utility model is as follows: a raw polycrystal silicon rod material polishing device, comprising an operation table, characterized in that: two groups of fixed plates are arranged on the operation table, two groups of fixed plates are rotatably connected with fixed conveying rollers between them, two groups of fixed plates are slidably connected with movable plates, a first adjusting assembly is arranged on the fixed plate for adjusting the distance between the movable plate and the fixed plate, two groups of movable plates are rotatably connected with auxiliary conveying rollers between them, the fixed conveying rollers and the auxiliary conveying rollers are driven by power devices, the fixed conveying rollers and the auxiliary conveying rollers are both provided with conveying threads, and the directions of rotation are opposite, the operation table is slidably connected with a driving box, the driving box output shaft is connected with a polishing piece, a second adjusting assembly is arranged on the operation table for adjusting the distance between the driving box and the fixed conveying roller.

[0007] As a preferred scheme, the first adjusting assembly comprises two groups of adjusting screws rotationally connected on the fixed plates, the adjusting screws are in threaded connection with the movable plates, the first motors are arranged on the fixed plates, the adjusting screws are driven by the first motors, and the first motors are electrically connected with the controller.

[0008] As a preferred scheme, the second adjusting assembly comprises a track base arranged on the operation table, the driving box is in sliding fit with the track base, a rack is arranged on the sidewall of the track base, the driving box is rotationally connected with a rotating rod, the rotating rod is connected with a gear in mesh with the rack at one end, a second motor is fixedly connected on the driving box, the second motor is connected with the rotating rod, and the second motor is electrically connected with the controller.

[0009] As a preferred scheme, the power device comprises the straight motors arranged on the fixed plates and the movable plates, the output ends of the two groups of straight motors are connected with the input ends of the fixed conveying rollers and the auxiliary conveying rollers respectively, and the two groups of straight motors are electrically connected with the controller.

[0010] As a preferred scheme, the dust collection device mainly comprises a dust collection cover, a dust collection pipeline and a dust collector, the dust collection cover is connected on the driving box and closely covers the polishing area where the polishing pieces are located.

[0011] As a preferred scheme, the discharging device is used for stably discharging the rod material after polishing treatment from the equipment through the conveying belt, and the conveying belt is made of a material with anti-static or wear-resistant characteristics.

[0012] As a preferred scheme, the polishing piece is provided with a diamond coating on the surface.

[0013] As a preferred scheme, the operation table is provided with a protection shell at the upper end, a maintenance door is rotationally connected on the protection shell, and a handle is arranged on the maintenance door.

[0014] As a preferred scheme, the maintenance door is provided with a plurality of transparent plates.

[0015] As a preferred scheme, the operation table is provided with a control panel, and the control panel is electrically connected with the first motor, the second motor, the straight motor and the driving element in the driving box.

[0016] The utility model discloses the beneficial effect:

[0017] One, highly flexible device adaptability: through the first adjusting assembly, according to the different diameters of the polysilicon rod material, the first motor driven adjusting screw is rotated to realize the flexible adjustment of the distance between the movable plate and the fixed plate, so that the fixed conveying roller and the auxiliary conveying roller can adapt to rod materials of various diameter specifications, significantly improving the versatility of the device for different size rods; and the second adjusting assembly can accurately adjust the distance between the driving box and the fixed conveying roller according to the abnormal conditions of the rod surface, using the second motor to drive the rotating rod and the gear rack structure, and then the grinding piece and the rod maintain appropriate spacing, providing strong support for different grinding needs.

[0018] Two, efficient and stable polishing process: the fixed conveying roller and the auxiliary conveying roller are equipped with conveying threads in opposite directions and are driven by a power device, which can stably clamp and convey the rod material, prevent the rod material from deviating or slipping during conveying, ensure the accuracy and continuity of polishing, and effectively improve the polishing efficiency; the diamond coating on the surface of the grinding piece has high hardness, wear resistance and little damage to the polysilicon material, and cooperates with the stable power provided by the driving part in the driving box to realize efficient and accurate polishing of the rod surface, ensuring that the surface quality after polishing meets the subsequent processing requirements.

[0019] Three, excellent environmental performance: the dust cover of the dust collection device tightly covers the polishing area, which can effectively collect the dust generated during polishing, and the dust is transported to the dust collector through the dust collection pipeline for filtration treatment, and the efficient filtration system ensures that the exhaust gas meets the environmental protection standards, significantly reducing the pollution of dust to the workshop environment, creating a cleaner and more environmentally friendly production environment.

[0020] Four, convenient operation and discharging: the control panel on the operation table is electrically connected with each key component, and the operating personnel can centrally control the operating parameters and working conditions of each component of the device through the control panel, which is simple and convenient to operate; the discharging device adopts a conveying belt with anti-static or wear-resistant properties, which can smoothly send the polished rod out of the device, ensuring the smoothness and safety of discharging and improving the continuity of the overall production process.

[0021] Five, convenient equipment maintenance: the protective shell provided on the upper end of the operation table protects the equipment, the maintenance door is conveniently opened and closed through the rotating connection, and the handle on the maintenance door is convenient to operate; the transparent plate design enables the operating personnel to observe the internal operation of the equipment without opening the maintenance door during equipment operation, which facilitates timely problem detection and greatly improves the convenience and timeliness of equipment maintenance.

[0022] Other advantages, objectives and features of the present application will be described in the subsequent specification to some extent, and to some extent, it will be obvious to those skilled in the art based on the study of the following text or can be taught from the practice of the present application. Attached Figure Description

[0023] To more clearly illustrate the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a perspective view of the present invention.

[0025] Figure 2 This is one of the perspective views of the three-dimensional cross-section of this utility model.

[0026] Figure 3 This is the second perspective view of the three-dimensional cross-section of this utility model.

[0027] Figure 4 This is the third perspective view of the three-dimensional cross-section of this utility model.

[0028] In the diagram: 1: Operating platform, 2: Fixed plate, 3: Fixed conveyor roller, 4: Movable plate, 5: Auxiliary conveyor roller, 6: Conveying thread, 7: Drive box, 8: Grinding disc, 9: Adjusting screw, 10: First motor, 11: Track base, 12: Rack, 13: Rotating rod, 14: Gear, 15: Second motor, 16: Right angle motor, 17: Protective housing, 18: Maintenance door, 19: Handle. Detailed Implementation

[0029] The following will refer to the appendix in the embodiments of this utility model. Figures 1-4 The technical solutions in the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0030] The utility model provides an embodiment 1, a native polycrystalline silicon rod polishing device, including operation platform 1, its characterized in being: two groups of fixed plate 2 are equipped on the operation platform 1, and two groups of fixed plate 2 are rotatably connected with fixed conveying roller 3, and two groups of fixed plate 2 are slidably connected with movable plate 4, and first adjusting assembly is equipped on fixed plate 2, for adjusting the distance between movable plate 4 and fixed plate 2, and auxiliary conveying roller 5 is rotatably connected between two groups of movable plate 4, and fixed conveying roller 3 and auxiliary conveying roller 5 are all driven by power device, and conveying thread 6 is all equipped on fixed conveying roller 3 and auxiliary conveying roller 5, and the direction is opposite, and the operation platform 1 is slidably connected with drive box 7, and the output shaft of drive box 7 is connected with polishing piece 8, and second adjusting assembly is equipped on the operation platform 1, for adjusting the distance of drive box 7 to fixed conveying roller 3.

[0031] As a further embodiment, the first adjusting assembly includes two groups of fixed plate 2 rotatably connected with adjusting screw 9, the adjusting screw 9 is threadedly connected with the movable plate 4, two groups of fixed plate 2 are each provided with a first motor 10, the adjusting screw 9 is driven by the first motor 10, and the first motor 10 is electrically connected with the controller.

[0032] As a further embodiment, the second adjusting assembly includes a track base 11 provided on the operation platform 1, the drive box 7 is slidably connected with the track base 11, the track base 11 is provided with a rack 12 on the side wall, the drive box 7 is rotatably connected with a rotating rod 13, one end of the rotating rod 13 is connected with a gear 14 engaged with the rack 12, the drive box 7 is fixedly connected with a second motor 15, the second motor 15 is connected with the rotating rod 13, and the second motor 15 is electrically connected with the controller.

[0033] As a further embodiment, the power device includes a pair of fixed plate 2 and a pair of movable plate 4, each provided with a right-angle motor 16, the output ends of the two right-angle motors 16 are respectively connected with the input ends of the fixed conveying roller 3 and the auxiliary conveying roller 5, and the two right-angle motors 16 are electrically connected with the controller.

[0034] As a further embodiment, it further includes a dust collection device, which is mainly composed of a dust collection cover, a dust collection pipeline and a dust collector, the dust collection cover is connected to the drive box 7 and closely covers the polishing area above the polishing piece 8.

[0035] As a further embodiment, it further includes a discharge device, which smoothly sends the rod material processed by polishing out of the equipment through a conveyor belt, and the conveyor belt is made of a material with anti-static or wear-resistant properties.

[0036] As a further implementation, the surface of the polishing sheet 8 is provided with a diamond coating.

[0037] As a further implementation, the upper end of the operating platform 1 is provided with a protective shell 17, the protective shell 17 is rotatably connected with a maintenance door 18, and the maintenance door 18 is provided with a handle 19.

[0038] As a further implementation, the maintenance door 18 is provided with a plurality of transparent plates.

[0039] As a further implementation, the operating platform 1 is provided with a control panel, which is electrically connected between the first motor 10, the second motor 15, the right-angle motor 16, and the driving member inside the driving box 7.

[0040] In use: Place the operating platform 1 stably on the designated position in the workshop, firmly install the two sets of fixed plates 2 on the operating platform 1, rotatably connect the fixed conveying rollers 3 with the two sets of fixed plates 2 through bearings and other rotating connecting members, ensure smooth rotation, set the corresponding sliding groove structure on the fixed plate 2, so that the movable plate 4 can stably slide up and down in the sliding groove, install the adjusting screw 9 on the fixed plate 2 through a suitable bearing, so that it can rotate freely, and at the same time, it is screwed with the corresponding threaded hole on the movable plate 4, the first motor 10 is installed on the two sets of fixed plates 2 respectively, and is connected with the adjusting screw 9 through a coupling and other components, to ensure that the first motor 10 can drive the adjusting screw 9 to rotate.

[0041] Install the track base 11 on the operating platform 1, set a sliding block structure on the bottom of the driving box 7 which is matched with the track base 11, realize the sliding fit between the driving box 7 and the track base 11, install the rack 12 on the side wall of the track base 11, install the rotating rod 13 on the driving box 7 through a bearing, connect the gear 14 meshing with the rack 12 at one end, and fix the second motor 15 on the driving box 7 and connect it with the rotating rod 13.

[0042] Install the right-angle motor 16 on one set of fixed plate 2 and one set of movable plate 4 respectively, connect the output end of the right-angle motor 16 with the input end of the fixed conveying roller 3 and the auxiliary conveying roller 5 through a coupling, to ensure stable power transmission.

[0043] The dust cover of the dust collection device is firmly connected to the driving box 7, so that it can tightly cover the upper part of the polishing area where the polishing sheet 8 is located, the dust collection pipe is connected to the dust cover and the dust collector, to ensure that the dust can be smoothly transported, and the conveying belt of the discharging device is installed at the end of the equipment, which is made of high-quality anti-static and wear-resistant materials.

[0044] The polishing piece 8 is installed on the output shaft of the drive box 7, and the surface is coated with a diamond coating in advance. A protective shell 17 is installed at the upper end of the operation table 1, and a maintenance door 18 is rotatably connected to the protective shell 17 by a hinge or the like, and a handle 19 and several transparent plates are installed on the maintenance door 18. A control panel is installed at a suitable position on the operation table 1 and is electrically connected to the first motor 10, the second motor 15, the right-angle motor 16, and the internal drive of the drive box 7. After completing the wiring and debugging, it is ensured that each component can work normally.

[0045] During polishing, when a batch of raw polycrystalline silicon rods with surface abnormalities need to be polished, the operator first starts the first motor 10 according to the diameter of the rod through the control panel. The first motor 10 is energized and operates to drive the adjusting screw 9 to rotate. Since the adjusting screw 9 is threadedly connected to the movable plate 4, the movable plate 4 will move along the sliding groove provided on the fixed plate 2, thereby adjusting the distance between the movable plate 4 and the fixed plate 2, and the spacing between the fixed conveying roller 3 and the auxiliary conveying roller 5 to adapt to the diameter of the rod to be polished.

[0046] Then, the operator controls the second motor 15 through the control panel according to the surface abnormality of the rod. The second motor 15 drives the rotating rod 13 to rotate, and the gear 14 at one end of the rotating rod 13 engages with the rack 12 on the side wall of the track base 11, so that the drive box 7 slides on the track base 11, thereby adjusting the distance between the drive box 7 and the fixed conveying roller 3, and allowing the polishing piece 8 to reach the appropriate spacing with the surface of the rod to be polished.

[0047] After preparation, the raw polycrystalline silicon rod to be polished is placed between the fixed conveying roller 3 and the auxiliary conveying roller 5. The right-angle motor 16 is started through the control panel, and the two groups of right-angle motors 16 drive the fixed conveying roller 3 and the auxiliary conveying roller 5 to rotate, respectively. Since the conveying threads 6 on the two rollers rotate in opposite directions, the rod will steadily advance in the conveying direction under the action of friction.

[0048] At the same time, the internal drive of the drive box 7 is started to drive the polishing piece 8 to rotate at high speed for polishing the surface of the rod. During polishing, the dust collection device works synchronously, and the dust collection cover collects the dust generated during polishing and transports it to the dust collector through the dust collection pipeline for filtering treatment to prevent dust pollution in the workshop.

[0049] After the rod is polished by the polishing piece 8, it continues to advance along the conveying direction of the fixed conveying roller 3 and the auxiliary conveying roller 5 to reach the discharge device. The conveying belt of the discharge device stably sends out the polished rod from the equipment, completing the entire polishing process.

[0050] When the device needs to be maintained and repaired after a period of operation, the staff can open the maintenance door 18 through the handle 19. The transparent plate on the maintenance door 18 allows the staff to observe the internal operation of the device at any time during the daily operation of the device, so as to discover problems in time.

[0051] Working principle

[0052] Bar conveying principle: The fixed conveying roller 3 and the auxiliary conveying roller 5 are both powered by the right-angle motor 16. Since the conveying threads 6 on their surfaces are in opposite directions, when they rotate simultaneously, the polysilicon bar will be subjected to a resultant force in the conveying direction under the action of friction, thereby stably conveying forward, ensuring that the bar is stable and continuously moves during polishing, and facilitating the polishing piece 8 to polish the surface comprehensively.

[0053] Bar clamping distance adjustment: In the first adjusting assembly, the first motor 10 is controlled by the controller to be powered on and rotated, and the power is transmitted to the adjusting screw 9. The rotation of the adjusting screw 9 is converted into the up-down linear motion of the movable plate 4 on the fixed plate 2, thereby adjusting the distance between the movable plate 4 and the fixed plate 2 and changing the distance between the fixed conveying roller 3 and the auxiliary conveying roller 5 to adapt to bars of different diameters.

[0054] Polishing distance adjustment: In the second adjusting assembly, the second motor 15 is controlled by the controller to rotate, driving the rotating rod 13 to rotate. The gear 14 at one end of the rotating rod 13 is engaged with the rack 12 on the sidewall of the track base 11. According to the transmission principle of the gear and rack, the rotation of the rotating rod 13 is converted into the linear sliding of the drive box 7 on the track base 11, thereby adjusting the distance from the drive box 7 to the fixed conveying roller 3, so that the polishing piece 8 can approach or move away from the surface of the bar to meet different polishing needs.

[0055] Polishing principle: The driving part inside the drive box 7 provides rotary power for the polishing piece 8. The diamond coating on the surface of the polishing piece 8 has the characteristics of high hardness, wear resistance, and little damage to polysilicon material. During high-speed rotation, it polishes the surface of the polysilicon bar, removes defects, unevenness, and other abnormal parts on the surface of the bar, and realizes the treatment of the surface of the bar.

[0056] Dust collection principle: The dust collection cover of the dust collection device is connected to the drive box 7 and tightly covers the polishing area. The negative pressure generated by the dust collector is used to suck the dust generated during polishing into the dust collector through the dust collection pipeline. The high-efficiency filtration system inside the dust collector filters and treats the dust, so that the discharged gas meets the environmental protection standard and prevents the dust from spreading to the workshop environment.

[0057] Discharging principle: The conveying belt of the discharging device is made of materials with anti-static or wear-resistant properties. After the bar is polished, the conveying belt relies on its own rotation to smoothly send the bar out of the device, completing the discharging work of the entire polishing device.

[0058] Control principle: the control panel on the operation table 1 serves as the control center of the equipment, and is electrically connected with the first motor 10, the second motor 15, the right-angle motor 16 and the driving parts in the driving box 7. The staff inputs corresponding instructions through the control panel, and the controller controls the start, stop, speed adjustment and other actions of each component according to the instructions, so as to realize the centralized control and accurate operation of the whole polishing device.

[0059] Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

Claims

1. A native polycrystalline silicon rod polishing device comprising an operating table (1), characterized in that: The operating table (1) is provided with two groups of fixed plates (2), two groups of the fixed plates (2) are rotatably connected with fixed conveying rollers (3), two groups of the fixed plates (2) are slidably connected with movable plates (4), the fixed plate (2) is provided with a first adjusting assembly for adjusting the distance between the movable plate (4) and the fixed plate (2), two groups of the movable plates (4) are rotatably connected with auxiliary conveying rollers (5), the fixed conveying roller (3) and the auxiliary conveying roller (5) are driven by a power device, the fixed conveying roller (3) and the auxiliary conveying roller (5) are provided with conveying threads (6) and are opposite in rotation direction, the operating table (1) is slidably connected with a driving box (7), the driving box (7) is connected with a grinding piece (8), the operating table (1) is provided with a second adjusting assembly for adjusting the distance between the driving box (7) and the fixed conveying roller (3).

2. A native polysilicon rod polishing apparatus according to claim 1, wherein The first adjusting assembly comprises two groups of fixed plates (2) rotatably connected with adjusting screws (9), the adjusting screw (9) is threadedly connected with the movable plate (4), two groups of the fixed plates (2) are provided with first motors (10), the adjusting screw (9) is driven by the first motor (10), and the first motor (10) is electrically connected with a controller.

3. A native polycrystalline silicon rod polishing apparatus according to claim 1, wherein The second adjusting assembly comprises a track base (11) provided on the operating table (1), the driving box (7) is slidably connected with the track base (11), the track base (11) is provided with a rack (12) on the side wall, the driving box (7) is rotatably connected with a rotating rod (13), one end of the rotating rod (13) is connected with a gear (14) engaged with the rack (12), the driving box (7) is fixedly connected with a second motor (15), the second motor (15) is connected with the rotating rod (13), and the second motor (15) is electrically connected with a controller.

4. The apparatus for polishing a native polycrystalline silicon rod according to claim 1, wherein The power device comprises a right-angle motor (16) provided on one of the fixed plates (2) and one of the movable plates (4), the output ends of two groups of the right-angle motors (16) are respectively connected with the input ends of the fixed conveying roller (3) and the auxiliary conveying roller (5), and the two groups of the right-angle motors (16) are electrically connected with a controller.

5. The apparatus for polishing a native polycrystalline silicon rod according to claim 1, wherein Further comprising a dust collection device mainly composed of a dust collection cover, a dust collection pipeline and a dust collector, the dust collection cover is connected with the driving box (7) and closely covers the grinding area above the grinding piece (8).

6. The apparatus for polishing a native polycrystalline silicon rod according to claim 1, wherein Further comprising a discharging device, the discharging device stably sends the rod material after grinding treatment out of the equipment through a conveying belt, and the conveying belt is made of a material with anti-static or wear-resistant properties.

7. The apparatus of claim 1, wherein the apparatus further comprises a plurality of abrasive elements. The surface of the grinding piece (8) is provided with a diamond coating.

8. The apparatus for polishing a native polycrystalline silicon rod according to claim 1, wherein The upper end of the operating table (1) is provided with a protection shell (17), the protection shell (17) is rotatably connected with a maintenance door (18), and the maintenance door (18) is provided with a handle (19).

9. A native polysilicon rod polishing apparatus according to claim 8, wherein The maintenance door (18) is provided with a plurality of transparent plates.

10. A native polysilicon rod polishing apparatus according to any one of claims 1-9, wherein, The operation platform (1) is provided with a control panel, which is electrically connected with the first motor 10, the second motor (15), the right-angle motor (16) and the driving part in the driving box (7).

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