A pretreatment device for batching materials in industrial silicon production

Abstract

This utility model relates to the technical field of batching pretreatment devices, and discloses a batching pretreatment device for industrial silicon production, including a mounting frame, a raw material processing mechanism, a raw material weighing and feeding mechanism, a material conveying mechanism, and a material stirring mechanism; the raw material processing mechanism includes a feeding channel, a first material gate assembly, a material crushing chamber, a support frame, a material crushing motor, crushing blades, a vertical displacement assembly, and a material screen. By setting multiple raw material processing mechanisms, different particle sizes of various materials can be screened, meeting the precise requirements for different raw material particle sizes in industrial silicon production; it can crush lumpy raw materials, allowing the raw material particles to pass through the set screen; the vertical displacement assembly drives the material screen to move up and down, which can effectively lift the large particles of raw material accumulated on the screen surface, avoiding screen blockage or re-crushing with the crushing blades, eliminating the need for regular manual cleaning, improving screening efficiency, reducing downtime, and lowering operating costs.

Description

Technical Field

[0001] This utility model relates to the technical field of batching pretreatment devices, specifically a batching pretreatment device for industrial silicon production. Background Technology

[0002] Industrial silicon, also known as quasi-metallic silicon, is a trade name that emerged in the mid-1960s. Metallic silicon is a product smelted from silica and carbonaceous reducing agents in an electric arc furnace. Byproducts of quasi-metallic silicon include microsilica powder, edge-skin silicon, black-skin silicon, and metallic silicon slag. Microsilica powder, also known as silica fume, is widely used in refractory materials and concrete industries. Industrial silicon production requires a batching device. Existing batching devices need to select silica, wood blocks, and coking coal of suitable particle size. Traditional batching devices easily contain large-particle raw materials, which significantly affects the smelting indicators and quality of industrial silicon. To solve these technical problems, patent document CN 216173935 U discloses a batching pretreatment device for industrial silicon production. This device uses a filter screen to screen raw materials; a crushing structure can crush unqualified raw materials, which can then be returned to the batching chamber for further processing.

[0003] However, the above-mentioned existing technology has the following problems when used: the single filter screen cannot achieve screening of different particle sizes of various materials, and there is a lack of corresponding screen cleaning structure. As a result, during the screening process, large particles of raw materials are easy to accumulate on the surface of the screen, which may clog the mesh and affect the screening efficiency. Utility Model Content

[0004] This utility model mainly provides a pre-treatment device for batching materials in industrial silicon production. It solves the problem that the existing technology uses a single filter screen, which cannot screen different particle sizes of various materials, and lacks a corresponding screen cleaning structure. As a result, during the screening process, large particles of raw materials tend to accumulate on the surface of the inclined filter screen, which may clog the mesh and affect the screening efficiency.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A pre-treatment device for industrial silicon production includes a mounting frame with multiple raw material processing mechanisms. A raw material weighing and feeding mechanism is located below each raw material processing mechanism on the mounting frame. A material conveying mechanism is located below each of the multiple raw material weighing and feeding mechanisms, and a material stirring mechanism is located at the feeding end of the material conveying mechanism. Each raw material processing mechanism includes a feeding channel mounted on the mounting frame. A first material gate assembly is located at the feeding port of the feeding channel. A material crushing chamber is located above the feeding channel. A support frame is located within the material crushing chamber. A material crushing motor is mounted on the support frame. The output end of the material crushing motor extends to a crushing blade located below the support frame. A vertical displacement assembly is located within the material crushing chamber below the crushing blade. A material screen is located at the upper output end of the vertical displacement assembly. The term "multiple raw material processing mechanisms" refers to two or more mechanisms, with the specific number determined based on the required materials. The material conveying mechanism can be any existing conveying mechanism, such as a belt conveyor or chain conveyor, as long as it can convey the various ingredients and bring them into the material mixing mechanism. Its specific length is arranged according to actual needs. The material mixing mechanism can also be any existing mixing mechanism, as long as it can mix various materials. The feed for the material mixing mechanism can be directly located below the discharge end of the material conveying mechanism, or it can be fed through a separate material lifting mechanism, arranged according to actual needs, as long as it allows the various ingredients on the material conveying mechanism to enter. Specifically, a limiting ring for limiting the screen is installed below the crushing blade in the material crushing chamber, and the upper side of the limiting ring is set as an inclined surface. Specifically, a motor protective cover with a circular, conical, or sloping top is installed on the outer support frame of the crushing motor. In operation, each ingredient is poured into a corresponding raw material processing unit. The crushing motor in the raw material processing unit drives the crushing blades to crush the corresponding raw materials. During the crushing process, the crushed material is screened by a material screen. The up-and-down displacement component controls the up-and-down movement of the material screen, causing the crushed material to move continuously on the screen. Qualified material is stored through the feeding channel and, when needed, is controlled by the first material gate component to enter the raw material weighing and feeding mechanism below. Unqualified material remains on the screen and is moved upward by the screen, then lifted by inertia to the crushing blades for further crushing. Subsequently, the first material gate component is opened to allow the material to fall, and the material is weighed by the raw material weighing and feeding mechanism. After reaching the required quantity, the first material gate component is closed, and the material falls again through the raw material weighing and feeding mechanism onto the material conveying mechanism. The material conveying mechanism then transports the material to the material mixing mechanism for thorough mixing, completing the pretreatment process.This structure enables parallel processing of multiple raw materials through multiple raw material handling mechanisms, improving the efficiency of raw material pretreatment; the raw material weighing and feeding mechanism ensures the accuracy of batching, providing a stable and accurate raw material ratio for industrial silicon production; the coordination of the material conveying mechanism and the material stirring mechanism realizes continuous operation from material conveying to mixing, reducing manual intervention and improving the automation and stability of the entire production process; at the same time, there is no need for manual transfer of unqualified materials after crushing during the production process.

[0007] Furthermore, the first material gate assembly includes an arc-shaped material gate rotatably connected to the material discharge channel and a push cylinder rotatably connected to the material discharge channel at its tail end. The push rod of the push cylinder is rotatably connected to the arc-shaped material gate, and the arc-shaped material gate is opened or closed by the push of the push cylinder. Specifically, the area below the material discharge port is configured with an arc-shaped structure to cooperate with the arc-shaped material gate, so that the arc-shaped material gate can rotate a certain distance and achieve a better closing effect. When it is necessary to open the material discharge port of the material discharge channel, the push rod of the push cylinder retracts. Since the push rod is rotatably connected to the arc-shaped material gate, and the arc-shaped material gate is rotatably connected to the material discharge channel, the push rod causes the arc-shaped material gate to rotate around the rotation connection point with the material discharge channel, thereby opening the material discharge port and allowing the material to fall smoothly through the material discharge port. When it is necessary to close the material discharge port, the push rod of the push cylinder pushes out, causing the arc-shaped material gate to rotate in the opposite direction until the material discharge port is completely closed, preventing the material from falling further. With this structure, the first material gate assembly adopts a push cylinder and an arc-shaped material gate, which is simple in structure and can quickly and accurately control the opening and closing of the material feeding channel; through the drive of the cylinder, remote control or automated operation can be realized, reducing manual operation and reducing labor intensity.

[0008] Furthermore, the material crushing chamber includes a circular crushing chamber and a square mounting chamber. The support frame is disposed within the circular crushing chamber, the material screen is located within the circular crushing chamber, and the vertical displacement component is disposed within the square mounting chamber. Specifically, the lower end of the square mounting chamber is detachably connected to the upper end of the feeding channel, and any existing detachable connection method can be used, such as bolt connection. In use, the material crushing chamber is divided into a circular crushing chamber and a square mounting chamber. After the raw material enters the circular crushing chamber, the material crushing motor drives the crushing blades to rotate at high speed within the circular crushing chamber to crush the raw material. The material generated during the crushing process moves within the circular crushing chamber. The vertical displacement component is disposed within the square mounting chamber, controlling the vertical movement of the material screen within the circular crushing chamber to screen the crushed material. Qualified material falls through the material screen into the feeding channel, while unqualified material continues to be crushed by the crushing blades within the circular crushing chamber. This structure designs the material crushing chamber as a combination of a circular crushing chamber and a square mounting chamber. The circular crushing chamber facilitates all-around crushing of the material by the crushing blades, improving the crushing effect. The square mounting chamber provides installation space for the vertical displacement components, ensuring a reasonable layout of each component and preventing interference between them.

[0009] Furthermore, the vertical displacement assembly includes multiple telescopic sleeves vertically arranged within the mounting cavity, and vertical displacement cylinders vertically arranged within the mounting cavity. Each telescopic sleeve has an L-shaped bracket at its lower end, which is connected to the output end of the vertical displacement cylinder. The material screen is detachably connected to the multiple L-shaped brackets. "Multiple telescopic sleeves" refers to two or more sleeves; for example, two sleeves are arranged in an equilateral triangle to coordinate with the vertical displacement cylinders, while three sleeves are arranged in a rectangular shape. In use, when the vertical displacement cylinders operate, their output ends extend and retract, causing the connected L-shaped brackets and the L-shaped brackets on the multiple telescopic sleeves to move up and down, thereby achieving vertical displacement of the material screen within the material crushing chamber. This structure allows the vertical displacement component to control the vertical displacement of the material screen through the cooperation of the vertical displacement cylinder and the telescopic sleeve, improving screening efficiency and quality, and preventing unqualified materials from clogging the screen. Simultaneously, the material screen is detachably connected to the L-shaped bracket, facilitating screen replacement and cleaning. When the screen is damaged or needs to be replaced with a screen of a different aperture, the operation can be performed quickly, reducing equipment downtime and improving production efficiency.

[0010] Furthermore, the material weighing and feeding mechanism includes a weighing shell, on which multiple weighing sensors are mounted and suspended on the mounting frame. A second material gate assembly is provided on the feeding port of the weighing shell. The multiple weighing sensors are at least three, arranged in an equilateral triangle outside the weighing shell. The second material gate assembly has the same structure as the first material gate assembly, only they are located at different feeding ports. Specifically, each weighing sensor has a connecting ring at both ends, which is movably connected to the hanging lug of the weighing shell via the lower connecting ring and to the hanging lug of the mounting frame via the upper connecting ring. In use, material falls into the weighing shell through the feeding channel. The multiple weighing sensors on the weighing shell detect the weight of the material in real time. When the weight of the material reaches a set value, the first material gate assembly is closed to stop feeding. When feeding is required, the second material gate assembly is opened, and the material falls from the feeding port of the weighing shell onto the material conveying mechanism under gravity. This structure, with multiple load cells arranged in an equilateral triangle, offers significant advantages over conventional layouts. Firstly, the stable triangular structure reduces the impact of external forces (such as vibration or tilt) on the weighing process, ensuring the stability of measurement data. Secondly, cross-validation of the three-point measurement data automatically calibrates measurement deviations caused by errors in individual sensors, achieving high-precision dynamic weighing of materials and effectively improving the accuracy and production stability of industrial silicon batching. The material weighing and feeding mechanism accurately measures the weight of materials through load cells, ensuring the accuracy of the proportions of various raw materials during industrial silicon production and improving product quality. In the batching process of industrial silicon production, complete and precise matching of various ingredients is not required; in specific production, batching accuracy can be allowed within a certain range, such as ±1% to ±3%.

[0011] Beneficial effects: By setting up multiple raw material processing mechanisms, each equipped with a material screen of different particle sizes, it is possible to screen various materials at different particle sizes, meeting the precise requirements for different raw material particle sizes in industrial silicon production, improving the accuracy of batching and the melting quality of industrial silicon; the raw material processing mechanism is equipped with a material crushing chamber and crushing blades, which can crush lumpy raw materials, allowing the raw material particles to pass through the set screens; the up-and-down displacement component drives the material screen to move up and down, which can effectively lift the large particles of raw material accumulated on the screen surface, avoiding screen blockage or re-crushing with the crushing blades, eliminating the need for regular manual cleaning, improving screening efficiency, reducing downtime, and lowering operating costs. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the weighing and feeding mechanism and the feeding channel in this embodiment;

[0013] Figure 2 This embodiment Figure 1 Enlarged diagram of A in the middle;

[0014] Figure 3 This is a front view schematic diagram of the weighing and feeding machine and the feeding channel in this embodiment;

[0015] Figure 4 This embodiment Figure 3 Enlarged diagram of B in the middle;

[0016] Figure 5 This is a top oblique view of the material crushing chamber in this embodiment;

[0017] Figure 6 This is a schematic diagram of the material crushing chamber from below in this embodiment;

[0018] Figure 7 This is a cross-sectional schematic diagram of the material crushing chamber in this embodiment.

[0019] Reference numerals: Mounting frame 1, Raw material handling mechanism 2, Feeding channel 201, First material gate assembly 202, Arc-shaped material gate 2021, Push cylinder 2022, Material crushing chamber 203, Circular crushing chamber 2031, Square mounting chamber 2032, Support frame 204, Material crushing motor 205, Crushing blade 206, Up and down displacement assembly 207, Telescopic sleeve 2071, Up and down displacement cylinder 2072, L-shaped bracket 2073, Material screen 208, Raw material weighing and feeding mechanism 3, Weighing shell 301, Weighing sensor 302, Second material gate assembly 303, Material conveying mechanism 4. Detailed Implementation

[0020] The following will provide a more detailed description of the technical solution of a batching pretreatment device for industrial silicon production according to the present invention, in conjunction with embodiments.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7As shown, this embodiment of a pre-treatment device for industrial silicon production includes a mounting frame 1. Multiple raw material processing mechanisms 2 are mounted on the mounting frame 1. A raw material weighing and discharging mechanism 3 is mounted on the mounting frame 1 below each raw material processing mechanism 2. A material conveying mechanism 4 is mounted below each of the multiple raw material weighing and discharging mechanisms 3. A material stirring mechanism is provided at the discharging end of the material conveying mechanism 4. Each raw material processing mechanism 2 includes a discharging channel 201 mounted on the mounting frame 1. A discharging port on the discharging channel 201 is provided with... The system includes a first material gate assembly 202. A material crushing chamber 203 is positioned above the material feeding channel 201. A support frame 204 is installed inside the material crushing chamber 203. A material crushing motor 205 is mounted on the support frame 204. The output end of the material crushing motor 205 extends to a crusher 206 positioned below the support frame 204. A vertical displacement assembly 207 is located inside the material crushing chamber 203 below the crusher 206. A material screen 208 is positioned at the upper output end of the vertical displacement assembly 207. The first material gate assembly 202 includes an arc-shaped material gate 2021 rotatably connected to the material feeding channel 201 and a push cylinder 2022 rotatably connected to the material feeding channel 201 at its tail end. The push rod of the push cylinder 2022 is rotatably connected to the arc-shaped material gate 2021. The arc-shaped material gate 2021 is opened or closed by the push of the push cylinder 2022. Specifically, the area below the discharge port is designed with an arc-shaped structure to cooperate with the arc-shaped material gate 2021, allowing the arc-shaped material gate 2021 to rotate a certain distance and achieve a better sealing effect. The material crushing chamber 203 includes a circular crushing chamber 2031 and a square mounting chamber 2032. The support frame 204 is disposed in the circular crushing chamber 2031, the material screen 208 is located in the circular crushing chamber 2031, and the vertical displacement component 207 is disposed in the square mounting chamber 2032. The vertical displacement component 207 includes multiple telescopic sleeves 2071 vertically disposed in the mounting chamber 2032, and vertical displacement cylinders 2072 vertically disposed in the mounting chamber 2032. The lower end of the telescopic sleeve 2071 and the output end of the vertical displacement cylinder 2072 are both provided with L-shaped brackets 2073, and the material screen 208 is detachably connected to the multiple L-shaped brackets 2073. The material weighing and feeding mechanism 3 includes a weighing shell 301, on which multiple weighing sensors 302 are mounted and hung on the mounting frame 1. A second material gate assembly 303 is provided on the feeding port of the weighing shell 301. The multiple weighing sensors 302 are at least three, and are arranged in an equilateral triangle outside the weighing shell 301.Specifically, a limiting ring for limiting the screen is provided in the material crushing chamber 203 below the crushing blade 206, and the upper side of the limiting ring is set as an inclined surface.

[0023] In use, each ingredient is poured into a corresponding raw material processing unit 2, and the material crushing motor 205 in the raw material processing unit 2 drives the crushing blade 206 to crush the corresponding raw material. During the crushing process, the crushed material is screened by the material screen 208. The up-down displacement component 207 controls the up-down movement of the material screen 208, so that the crushed material moves continuously on the screen. Qualified material is stored at the lower end of the feeding channel 201 and, when needed, is controlled by the first material gate component 202 to enter the raw material weighing and feeding mechanism 3 below. Unqualified material remains on the screen and is moved upward by the screen, and is lifted by inertia to the crushing blade 2206 for further crushing. Then, the first material gate component 202 is opened to let the material fall, and the material is weighed by the raw material weighing and feeding mechanism 3. After the required quantity is reached, the first material gate component 202 is closed, and finally, the material falls to the material conveying mechanism 4 through the raw material weighing and feeding mechanism 3, and is then transported to the material mixing mechanism for thorough mixing, completing the pretreatment process. Beneficial effects: By setting up multiple raw material processing mechanisms 2, each equipped with a material screen 208 of different particle sizes, it is possible to screen various materials at different particle sizes, meeting the precise requirements for different raw material particle sizes in industrial silicon production, improving the accuracy of batching and the melting quality of industrial silicon; the material crushing chamber 203 and crushing blade 206 are set in the raw material processing mechanism 2 to crush lumpy raw materials, allowing the raw material particles to pass through the set screens; the vertical displacement component 207 drives the material screen 208 to move up and down, which can effectively lift the large particles of raw material accumulated on the screen surface, avoiding screen blockage or re-crushing with the crushing blade 206, eliminating the need for regular manual cleaning, improving screening efficiency, reducing downtime, and lowering operating costs. The material stirring mechanism is not shown in any of the above figures.

[0024] The control method of this utility model is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge or conventional technology in the field. Therefore, this utility model will not explain the control method and circuit connection in detail.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pretreatment device for batching materials in industrial silicon production, characterized in that: The device includes a mounting frame on which multiple raw material processing mechanisms are mounted. A raw material weighing and feeding mechanism is mounted below each raw material processing mechanism on the mounting frame. A material conveying mechanism is mounted below each of the multiple raw material weighing and feeding mechanisms. A material stirring mechanism is mounted at the feeding end of the material conveying mechanism. Each raw material processing mechanism includes a feeding channel mounted on the mounting frame. A first material gate assembly is mounted on the feeding port of the feeding channel. A material crushing chamber is mounted above the feeding channel. A support frame is mounted inside the material crushing chamber. A material crushing motor is mounted on the support frame. A crushing blade is mounted below the output end of the material crushing motor at a position below the support frame. A vertical displacement assembly is mounted inside the material crushing chamber below the crushing blade. A material screen is mounted at the upper output end of the vertical displacement assembly.

2. The pretreatment device for batching materials in industrial silicon production according to claim 1, characterized in that: The first material gate assembly includes an arc-shaped material gate rotatably connected to the material feeding channel and a push cylinder rotatably connected to the material feeding channel at its tail end. The push rod of the push cylinder is rotatably connected to the arc-shaped material gate, and the arc-shaped material gate is rotated to open or close the material feeding port by the push of the push cylinder.

3. The pretreatment device for batching materials in industrial silicon production according to claim 1, characterized in that: The material crushing chamber includes a circular crushing chamber and a square mounting chamber. The support frame is disposed in the circular crushing chamber, the material screen is located in the circular crushing chamber, and the vertical displacement component is disposed in the square mounting chamber.

4. The pretreatment device for batching materials in industrial silicon production according to claim 3, characterized in that: The vertical displacement assembly includes multiple telescopic sleeves vertically arranged in the mounting cavity, and vertical displacement cylinders vertically arranged in the mounting cavity; the lower end of each telescopic sleeve is provided with an L-shaped bracket at the output end of the vertical displacement cylinder, and the material screen is detachably connected to the multiple L-shaped brackets.

5. The pretreatment device for batching materials in industrial silicon production according to claim 1, characterized in that: The material weighing and feeding mechanism includes a weighing shell, on which multiple weighing sensors are installed and hung on the mounting frame; a second material gate assembly is provided on the feeding port of the weighing shell.

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