A granular silicon charging device

Abstract

The application discloses a granular silicon feeding device, which comprises a base, a material box, a feeding pipe and a moving mechanism. The material box is arranged on the base and used for storing materials; the feeding pipe has an inlet communicated with a discharge port of the material box and an outlet used for feeding the materials to the outside; and the moving mechanism is arranged on the base and in transmission connection with the feeding pipe and used for driving the outlet of the feeding pipe to move at least in a first direction. Compared with the prior art, the granular silicon feeding device disclosed by the application changes the discharging position through the moving mechanism, so that the granular silicon can be dynamically and uniformly layered and fed, the granular silicon is prevented from being piled together to cause blockage, the continuity and stability of the feeding process are ensured, the non-scheduled shutdown is greatly reduced, and the processing efficiency of products is improved.

Description

Technical Field

[0001] This application relates to the field of crystalline silicon preparation technology, and more specifically, to a particulate silicon feeding device. Background Technology

[0002] In the production, processing, and subsequent application of granular silicon, the feeding process is one of the most crucial steps. Currently, most granular silicon feeding devices used in the industry are single-channel structures with fixed outlet positions and simple structures. During the feeding process, due to the characteristics of the granular silicon itself and the influence of the feeding speed, granular silicon is prone to accumulation at the feeding port of the feeding channel, forming a "pile" problem. Pile buildup can cause blockage of the feeding channel, forcing the feeding process to be interrupted, requiring workers to stop the machine for cleaning, and reducing production efficiency.

[0003] Therefore, how to reduce blockages in the particulate silicon feeding process has become a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0004] The purpose of this application is to disclose a particulate silicon feeding device to reduce blockages in the particulate silicon feeding process.

[0005] A granular silicon feeding device, comprising:

[0006] Base;

[0007] A material bin, located on the base, is used to store materials;

[0008] A feeding pipe having an inlet communicating with the outlet of the material box and an outlet for discharging the material to the outside;

[0009] A moving mechanism is disposed on the base and is connected to the feeding pipe for driving the outlet of the feeding pipe to move at least in a first direction.

[0010] In one possible implementation, the moving mechanism includes:

[0011] A housing assembly is disposed on the base, and the housing assembly has a first sliding groove along the first direction;

[0012] A lead screw, which is rotatably mounted on the housing assembly;

[0013] A sliding component, which cooperates with the lead screw and slides in the first groove, and the outlet of the feeding pipe is connected to the sliding component;

[0014] A first driving component is mounted on the housing assembly, and the output end of the first driving component is connected to the lead screw drive.

[0015] In one possible implementation, the surface of the lead screw is provided with two helical grooves with opposite directions of rotation, and the two ends of the two helical grooves are smoothly connected by a transition section.

[0016] The sliding component is sleeved on the surface of the lead screw; the sliding component is provided with a ball bearing that cooperates with the spiral groove; when the first driving component drives the lead screw to rotate, the ball bearing can switch from one spiral groove to another spiral groove with the opposite direction of rotation under the guidance of the transition section, thereby realizing the reciprocating motion of the sliding component.

[0017] In one possible implementation, the moving mechanism further includes an electrically controlled reversing mechanism, the sliding member being threadedly connected to the lead screw, and the electrically controlled reversing mechanism being configured to control the first driving member to rotate in the forward and reverse directions, thereby driving the sliding member to reciprocate linearly along the lead screw.

[0018] In one possible implementation, the moving mechanism is further configured to drive the outlet of the feeding tube to move along a second direction, which is perpendicular to the first direction and lies in the same plane.

[0019] In one possible implementation, the moving mechanism further includes a second drive component;

[0020] A slider is fixedly disposed on the housing assembly, and a second groove is formed on the base along the second direction; the slider slides in cooperation with the second groove; the second driving component is used to drive the slider to move along the first groove.

[0021] In one possible implementation, the hopper includes:

[0022] Mounting bracket, which is fixedly mounted on the upper part of the base;

[0023] A housing is provided on the mounting frame, and a discharge port is provided on the housing, such that the height of the discharge port in the vertical direction is higher than the height of the feed pipe outlet;

[0024] The lid is hinged to the box body via a hinge axis; the lid is rotatable about the hinge axis.

[0025] In one possible implementation, the enclosure is provided with an observation window, which is strip-shaped and whose length direction is parallel to the axial direction of the enclosure.

[0026] In one possible implementation, a discharge valve is also included, which is disposed on the discharge port or the feeding pipe.

[0027] In one possible implementation, the base includes:

[0028] Base;

[0029] The support member is fixedly mounted on the base;

[0030] The mounting platform is fixedly mounted on the support member, and the moving mechanism is located on the surface of the mounting platform facing the base.

[0031] In the operation of the granular silicon feeding device disclosed in this application, the base is moved to the required location before feeding, and the outlet of the feeding pipe is moved above the target equipment. Granular silicon is added into the inside of the material box, and the granular silicon enters the feeding pipe through the outlet of the material box and is discharged from the outlet of the feeding pipe to feed the target equipment. During the feeding process, the moving mechanism is activated to move the outlet of the feeding pipe, thereby changing the position of the granular silicon discharge and preventing the granular silicon from accumulating in the same place.

[0032] Compared with related technologies, the granular silicon feeding device disclosed in this application changes the feeding position through a moving mechanism, thereby enabling the granular silicon to be dynamically and uniformly fed in layers, avoiding the granular silicon from piling up and causing blockage, ensuring the continuity and stability of the feeding process, greatly reducing unplanned downtime, and improving product processing efficiency. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments or related technologies of this application, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a schematic diagram of the granular silicon feeding device disclosed in the embodiments of this application;

[0035] Figure 2 This is a schematic diagram of the moving structure disclosed in the embodiments of this application;

[0036] Figure 3 This is a side view of the movement disclosed in an embodiment of this application;

[0037] Figure 4 for Figure 3 A magnified view of a portion of point A in the middle.

[0038] The attached figures are labeled as follows:

[0039] 100. Base; 110. Base plate; 120. Support component; 130. Mounting platform; 131. Second slide rail;

[0040] 200. Material bin; 210. Box body; 220. Observation window; 230. Box cover; 240. Mounting bracket;

[0041] 300. Feeding pipe;

[0042] 400. Moving mechanism; 410. Housing assembly; 411. First slide groove; 412. Slider; 420. Lead screw; 430. Sliding component; 440. First driving component; 450. Second driving component;

[0043] 500. Discharge valve;

[0044] 600. Toolbox;

[0045] 700. Operation panel;

[0046] 800. Wheels. Detailed Implementation

[0047] The purpose of this application is to disclose a particulate silicon feeding device to reduce blockages in the particulate silicon feeding process.

[0048] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0049] See Figure 1 The granular silicon feeding device provided in this application includes a base 100, a material box 200, a feeding pipe 300, and a moving mechanism 400.

[0050] The base 100 can be a stable frame structure serving as the installation foundation, and the bottom can be equipped with feet or casters. The material bin 200 is fixedly installed on the base 100, with a feed inlet at the top and a conical discharge outlet at the bottom to facilitate the accumulation of silicon particles at the bottom under gravity. The inner wall can be polished or coated for storing silicon particles. The feeding pipe 300 is a flexible connecting pipe to compensate for relative movement. Its upper inlet is connected to the lower part of the discharge outlet of the material bin 200, and its lower outlet is fixedly installed on the moving mechanism 400, so that its outlet can move synchronously with the moving mechanism 400.

[0051] The moving mechanism 400 is mounted on the base 100 and is used to drive the outlet of the feeding pipe 300 to move at least along a first direction. The first direction may be... Figure 1 The X direction is shown. The moving mechanism 400 can be any existing drive device capable of outputting linear motion.

[0052] During the operation of the granular silicon feeding device disclosed in this application, the base 100 is moved to the required location before feeding, and the outlet of the feeding pipe 300 is moved above the target equipment. Granular silicon is added into the material box 200, and enters the feeding pipe 300 through the outlet of the material box 200, and is discharged from the outlet of the feeding pipe 300 to feed the target equipment. During the feeding process, the moving mechanism 400 is activated to move the outlet of the feeding pipe 300, thereby changing the position of the granular silicon discharge and preventing the granular silicon from accumulating in the same place.

[0053] Compared with related technologies, the granular silicon feeding device disclosed in this application changes the feeding position through the moving mechanism 400, thereby enabling the granular silicon to be dynamically and uniformly fed in layers, avoiding the granular silicon from piling up and causing blockage, ensuring the continuity and stability of the feeding process, greatly reducing unplanned downtime, and improving product processing efficiency.

[0054] In one specific embodiment, the moving mechanism 400 may include a housing assembly 410, a lead screw 420, a sliding component 430, and a first driving component 440, such as Figure 2 As shown. The housing assembly 410 can be a hollow rectangular component, with its top surface connected to the base 100 and its bottom surface having a first groove 411, the length direction of the first groove 411 being parallel to the first direction (X direction).

[0055] The lead screw 420 is rotatably supported within the housing assembly 410 via a bearing seat, and the axial direction of the lead screw 420 is parallel to the first direction (X direction). The first drive component 440 can be mounted on the outer surface of the housing assembly 410, and the output end of the first drive component 440 is connected to the lead screw 420 for transmission. To provide safety protection for the first drive component 440, a housing can be provided outside the first drive component 440, and the housing can be connected to the housing assembly 410 to isolate the first drive component 440 from the external environment and prevent accidental ingress of external solid foreign objects.

[0056] The sliding component 430 engages with the lead screw 420 and slides within the first groove 411. The outlet of the feeding pipe 300 is connected to the sliding component 430. Specifically, the sliding component 430 may include a sleeve 431, a bottom rod 432, and a sleeve 433. The sleeve 431 engages with the lead screw 420, and the bottom rod 432 is fixedly connected to it. The other end of the bottom rod 432 extends from the first groove 411 and connects to the sleeve 433. The bottom rod 432 can move freely along the first groove 411. The sleeve 433 may be an annular component with a connecting pipe formed inside. The outlet of the feeding pipe 300 is connected to the connecting pipe, allowing the outlet of the feeding pipe 300 to move synchronously with the sliding component 430.

[0057] During the operation of the granular silicon feeding device, the first driving component 440 is activated, driving the lead screw 420 to rotate. Due to the sliding engagement between the sliding component 430 and the first sliding groove 411, the sliding component 430 is strictly constrained and can only move along the axial direction of the lead screw 420, but cannot rotate, thereby driving the outlet of the feeding tube 300 to move along the axial direction of the lead screw 420.

[0058] In one specific embodiment, the cylindrical surface of the lead screw 420 has two helical grooves with opposite directions of rotation, for example, one is a right-handed helical groove and the other is a left-handed helical groove. The two helical grooves are parallel to each other and alternately connected, forming a continuous, end-to-end track. The two ends of each helical groove are connected to the corresponding ends of the other helical groove through a smoothly transitioning arc groove or similar steering structure, thereby forming an infinitely looping closed path for the ball to roll.

[0059] The sliding component 430 is a ball nut, sleeved on the outside of the lead screw 420. Its inner diameter is slightly larger than the outer diameter of the lead screw 420, and its inner wall has a ball circulation channel. When the first driving component 440 drives the lead screw 420 to rotate continuously in one direction, initially, the balls are located in one section of the helical groove. Since the sliding component 430 cannot rotate, the rotation of the lead screw 420 forces the sliding component 430 to move linearly. When the sliding component 430 reaches the end of its stroke, the balls enter the transition section. Guided by the transition section, the balls switch to another section of the helical groove with the opposite rotation direction. The rotation direction of the helical groove where the balls are located has changed. Under the action of the lead screw 420 rotating in the same direction, the sliding component 430 will perform a reverse linear motion. This cycle repeats continuously, thus realizing the reciprocating linear motion of the sliding component 430.

[0060] This design employs a purely mechanical structure for commutation, eliminating electronic commutation delay and inrush current. It is insensitive to harsh environments such as dust, oil, and electromagnetic interference, making it particularly suitable for high-speed, high-frequency, and long-term continuous operation, with low maintenance costs. Furthermore, it eliminates the need for complex motion controllers, high-precision encoders, and dual-channel drive circuits, resulting in an extremely simple circuit system. This provides a significant manufacturing cost advantage for specific high-volume, fixed-function applications.

[0061] In another specific embodiment, the moving mechanism 400 further includes an electrically controlled reversing mechanism. The sliding member 430 is threadedly connected to the lead screw 420. The electrically controlled reversing mechanism is configured to control the first driving member 440 to rotate in both forward and reverse directions, thereby driving the sliding member 430 to reciprocate linearly along the lead screw 420. Specifically, the electrically controlled reversing mechanism may include a controller and a limit sensor. The controller is electrically connected to the driver of the first driving member 440 and is used to send control signals such as direction and enable to the driver. The limit sensor is installed near the extreme positions at both ends of the axial travel of the lead screw 420 and is communicatively connected to the controller. The controller has preset motion parameters. For example, when the sliding member 430 needs to move to the right, the controller sends a command to the first driving member 440 to rotate forward, causing the lead screw 420 to rotate forward and driving the sliding member 430 to move to the right. When the triggering element on the sliding member 430 reaches the sensing area of ​​the limit sensor, the sensor sends a signal to the controller. Upon receiving this signal, the controller immediately issues a reversal command. The first drive component 440 begins to rotate in the opposite direction, and the lead screw 420 subsequently reverses, driving the sliding component 430 to move to the left. The first drive component 440 can be a servo motor or a stepper motor to achieve precise position and speed control.

[0062] This design employs a motor and controller to achieve high-precision positioning, programmable speed and acceleration curves, and stroke adjustments that only require parameter modifications, greatly enhancing the device's flexibility. Furthermore, it easily integrates with higher-level control systems, enabling complex motion logic and online fault diagnosis, thus improving the device's intelligence level.

[0063] To improve the applicability of the granular silicon feeding device, the moving mechanism 400 is also used to drive the outlet of the feeding tube 300 to move along a second direction, which is perpendicular to the first direction and lies in the same plane. The second direction can be as follows: Figure 1 The Y direction is shown. This design allows the outlet of the feed tube 300 to move within a plane, enabling the feed range to precisely cover an entire rectangular or specific shaped area, greatly improving the service range and utilization of a single unit.

[0064] In one specific embodiment, the moving mechanism 400 may further include a second drive component 450, such as Figure 3 and Figure 4 As shown, a slider 412 is fixedly mounted on the housing assembly 410, and a second sliding groove 131 is formed on the base 100 along a second direction. The slider 412 slides in conjunction with the second sliding groove 131. A second driving component 450 is fixedly mounted on the base 100, and its output end is connected to the housing assembly 410 to drive the slider 412 to move along the first sliding groove 411. The second driving component 450 includes, but is not limited to, an electric actuator and a cylinder, which can be designed by those skilled in the art based on requirements.

[0065] In one embodiment, the hopper 200 includes a mounting bracket 240, a hopper body 210, and a hopper cover 230.

[0066] The mounting frame 240 can be a bracket welded from structural steel or several vertical support columns, with its lower end fixed to the base 100 by bolts or welding. The housing 210 is mounted on the mounting frame 240, such that the vertical height of the outlet of the housing 210 is higher than the height of the outlet of the feeding pipe 300. The feeding pipe 300, extending from the outlet of the housing 210, maintains a slope from high to low at its inlet until it connects to the movable outlet driven by the moving mechanism 400. This design achieves gravity flow, eliminating the need for additional power equipment for lifting or forced conveying. This not only simplifies the overall device structure and reduces manufacturing costs but also eliminates the energy consumption and maintenance requirements of this part of the equipment, making operation more economical and reliable. Furthermore, it effectively reduces the risk of residual and clogged particulate silicon in the pipes, ensuring the smoothness and stability of the feeding process.

[0067] To prevent foreign objects from entering the housing 210, the housing 210 is hinged to a cover 230 via a hinge shaft, allowing the cover 230 to rotate around the hinge shaft for opening and closing.

[0068] To facilitate observation of the granular silicon content within the housing 210, an observation window 220 is provided. This window 220 can be made of a transparent, high-strength material (such as polycarbonate or tempered glass), and can be strip-shaped with its length parallel to the axial direction of the housing 210. Operators can directly confirm the quantity and status of the granular silicon within the housing 210 via the material level indicator without opening the lid or using external equipment, preventing incorrect or excessive addition and avoiding the safety and contamination risks associated with opening the lid for inspection. It also allows direct observation of whether the material falls smoothly, enabling immediate detection of blockages and significantly reducing fault diagnosis and maintenance downtime.

[0069] To achieve precise control of the feeding start and stop, the granular silicon feeding device also includes a discharge valve 500, which is installed at the discharge port or on the feeding pipe 300. The discharge valve 500 can be a butterfly valve, gate valve, or ball valve that is manually, pneumatically, or electrically controlled. For certain types of valves (such as butterfly valves, gate valves, and ball valves), the feeding flow rate of granular silicon can be controlled by adjusting the opening degree to adapt to different feeding speed requirements.

[0070] In one specific embodiment, the base 100 includes a base 110, a support member 120, and a mounting platform 130. The support member 120 is fixedly mounted on the base 110, and reinforcing ribs can be welded to both sides to improve the stability of the device. The mounting platform 130 is a flat plate-like component supported on the support member 120. The moving mechanism 400 is mounted on the bottom surface of the mounting platform 130, and the material box 200 is mounted on the mounting platform 130. The mounting platform 130 provides the moving mechanism 400 with an installation reference and movement space.

[0071] To improve the practicality of the device, the granular silicon feeding device also includes a toolbox 600, a control panel 700, and wheels 800. The toolbox can be mounted on the base 110 for storing related tools. The control panel 700 is mounted on the surface of the base 110 for controlling the first drive component 440 and the second drive component 450, improving ease of operation. The wheels 800 can be mounted under the base 110 for easy movement of the granular silicon feeding device.

[0072] The terms "first" and "second," etc., used in the specification and claims of this application are used to distinguish different objects, not to describe a specific order, and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units may include steps or units not listed, but rather steps or units not listed. Additionally, in the description of embodiments in this application, "a plurality of" means two or more.

[0073] In the description of this application, it should be understood that the terms "height," "thickness," "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. In the description of this application, "a plurality of" means two or more, and "at least one" can mean one, two, or more, unless otherwise expressly specified.

[0074] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Specific technical means in some embodiments may be incorporated, in whole or in part, into another embodiment unless explicitly excluded by another embodiment. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A particle silicon feeding device, characterized in that, include: Base (100); A material bin (200) is disposed on the base (100) for storing materials; Feeding pipe (300), the feeding pipe (300) having an inlet communicating with the outlet of the material box (200) and an outlet for discharging the material to the outside; A moving mechanism (400) is disposed on the base (100) and is connected to the feeding pipe (300) for driving the outlet of the feeding pipe (300) to move at least in a first direction.

2. The granular silicon feeding device as described in claim 1, characterized in that, The moving mechanism (400) includes: A housing assembly (410) is disposed on the base (100), and the housing assembly (410) has a first groove (411) along the first direction. A lead screw (420) is rotatably disposed on the housing assembly (410). The sliding component (430) cooperates with the lead screw (420) and slides with the first groove (411), and the outlet of the feeding pipe (300) is connected to the sliding component (430); A first drive component (440) is mounted on the housing assembly (410), and the output end of the first drive component (440) is connected to the lead screw (420) for transmission.

3. The granular silicon feeding device as described in claim 2, characterized in that, The surface of the lead screw (420) is provided with two spiral grooves with opposite directions of rotation, and the two ends of the two spiral grooves are smoothly connected by a transition section. The sliding component (430) is sleeved on the surface of the lead screw (420); the sliding component (430) is provided with a ball that cooperates with the spiral groove; when the first driving component (440) drives the lead screw (420) to rotate, the ball can switch from one spiral groove to another spiral groove with the opposite direction under the guidance of the transition section, thereby realizing the reciprocating motion of the sliding component (430).

4. The granular silicon feeding device as described in claim 2, characterized in that, The moving mechanism (400) further includes an electrically controlled reversing mechanism. The sliding component (430) is threadedly connected to the lead screw (420). The electrically controlled reversing mechanism is configured to control the first driving component (440) to rotate in the forward and reverse directions, thereby driving the sliding component (430) to reciprocate linearly along the lead screw (420).

5. The granular silicon feeding device as described in claim 2, characterized in that, The moving mechanism (400) is also used to drive the outlet of the feeding tube (300) to move along a second direction, which is perpendicular to the first direction and lies in the same plane.

6. The granular silicon feeding device as described in claim 5, characterized in that, The moving mechanism (400) also includes a second driving component (450); A slider (412) is fixedly disposed on the housing assembly (410), and a second groove (131) is provided on the base (100) along the second direction; the slider (412) slides in cooperation with the second groove (131); the second driving component (450) is used to drive the slider (412) to move along the first groove (411).

7. The granular silicon feeding device as described in claim 1, characterized in that, The hopper (200) includes: Mounting bracket (240), which is fixedly disposed on the upper part of the base (100); The housing (210) is disposed on the mounting bracket (240), and the discharge port is disposed on the housing (210) such that the height of the discharge port in the vertical direction is higher than the height of the outlet of the feeding pipe (300); The lid (230) is hinged to the body (210) via a hinge axis; the lid (230) is rotatable about the hinge axis.

8. The granular silicon feeding device as described in claim 7, characterized in that, The housing (210) is provided with an observation window (220), which is strip-shaped and the length direction of the observation window (220) is parallel to the axial direction of the housing (210).

9. The granular silicon feeding device as described in claim 7, characterized in that, It also includes a discharge valve (500), which is installed on the discharge port or the feeding pipe (300).

10. The granular silicon feeding device as described in claim 1, characterized in that, The base (100) includes: Base (110); A support member (120) is fixedly disposed on the base (110); The mounting platform (130) is fixedly mounted on the support member (120), and the moving mechanism (400) is mounted on the surface of the mounting platform (130) facing the base (110).

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