Metal silicon production energy-saving equipment

Abstract

The utility model discloses metal silicon production energy-saving equipment, which comprises a heating furnace, the heating furnace is arranged on external equipment, a replacement mechanism is arranged on the heating furnace, the replacement mechanism comprises a plurality of exhaust pipes, a transverse pipe and a recovery pipe, the exhaust pipes are respectively communicated and arranged on the heating furnace, the transverse pipe is communicated with the recovery pipe, and the recovery pipe is communicated with the heating furnace. Each exhaust pipe is provided with a transverse pipe, the multiple transverse pipes are installed on the recovery pipe in a communicated mode, the exhaust pipes are provided with filter screens, the filter screens are provided with attaching discs, and the industrial problems that in traditional equipment, the filter screens are tedious and time-consuming to maintain are thoroughly solved. The device adopts a threaded locking structure, and the filter assembly can be disassembled and assembled through simple rotating operation. Maintenance personnel only need to unscrew the threaded connection disc at the top, the whole filtering unit can be directly taken out to be cleaned or replaced, complex tools are not needed, and the operation process is greatly simplified.

Description

Technical Field

[0001] This utility model relates to the field of metallic silicon production technology, and more specifically, to an energy-saving device for metallic silicon production. Background Technology

[0002] In modern silicon metal production processes, blower systems play a crucial role in airflow, providing the necessary aerodynamics for the production process. When silicon is smelted in an electric furnace, the high-pressure airflow generated by the blower not only promotes combustion and oxidation reactions but also accelerates material movement, improving production efficiency. However, this airflow carries a significant amount of heat after its work, typically reaching temperatures of 300-500°C. Directly releasing this heat into the environment not only wastes valuable energy resources but also raises the temperature in the production workshop, impacting the working environment. Based on energy conservation and environmental protection principles, the industry commonly employs heat exchange systems to recover and utilize the heat from this airflow, converting it into heating for the plant area or process heat, significantly improving energy efficiency. However, in practical applications, it has been found that the airflow in the silicon metal production process contains a large amount of impurities such as silicon dust and carbon particles. These solid particles easily accumulate on the surface of heat exchange equipment, reducing heat exchange efficiency and potentially causing equipment blockage and damage. Although various production companies have installed corresponding filtration systems, existing equipment has significant defects in its filter structure design, making it difficult for maintenance personnel to easily inspect and replace the filters.

[0003] In-depth analysis of existing technological obstacles reveals that the filtration devices commonly used in silicon metal plants typically employ a fixed installation structure, with the filter screen secured to the housing by sealing strips and multiple bolts. When the filter screen needs replacement, maintenance personnel must shut down the entire system and wait for the equipment to cool down before removing dozens of fixing bolts—a time-consuming and cumbersome process. Even more problematic is that, due to prolonged exposure to high temperatures, the sealing strips often adhere to metal components, increasing the difficulty of disassembly and sometimes requiring the use of specialized tools for forced separation. This not only prolongs maintenance time but can also damage equipment components. During peak production seasons, each equipment downtime translates into significant economic losses. Consequently, many companies are forced to extend filter screen replacement cycles, continuing to use filters whose efficiency has declined, leading to reduced heat recovery rates and increased energy waste. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] In view of the problems existing in the prior art, this utility model provides an energy-saving equipment for the production of metallic silicon to solve the technical problems mentioned in the background art.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: an energy-saving device for the production of metallic silicon, comprising a heating furnace installed on an external device, a replacement mechanism provided on the heating furnace, the replacement mechanism comprising an exhaust pipe, a horizontal pipe and a recovery pipe, multiple exhaust pipes being provided and connected to the heating furnace respectively, a horizontal pipe being installed on each exhaust pipe, the multiple horizontal pipes being connected to the recovery pipe, a filter screen being provided on the exhaust pipe, a bonding disc being provided on the filter screen, a spring being abutted on the bonding disc, a top disc being provided at the upper end of the spring, a threaded disc being provided internally on the exhaust pipe, the threaded disc abutting against the top disc, and a hexagonal tube being installed on the threaded disc.

[0008] The present invention is further configured such that a pressure plate is provided in the middle of the spring, a pressure rod is provided on the lower end face of the pressure plate, and the upper end of the pressure rod is slidably connected inside the hexagonal tube.

[0009] The present invention is further configured such that a pressure spring is provided at the lower end of the pressure rod, and a one-way disc is provided at the lower end of the pressure spring.

[0010] The present invention is further configured such that a one-way ring is coaxially provided inside the exhaust pipe, and the one-way disc presses on the one-way ring.

[0011] The present invention is further configured such that a guide sleeve is provided at the lower end of the one-way disc, and a guide rod is provided inside the exhaust pipe, the guide rod being slidably connected inside the guide sleeve.

[0012] The present invention is further configured such that a ball bearing is provided on the guide sleeve, and a plurality of contraction springs are provided at equal intervals on the side wall of the exhaust pipe, the contraction springs abutting against the ball bearing.

[0013] The present invention is further configured such that a blower is provided on the heating furnace, an air inlet pipe is provided on the blower, and the other end of the air inlet pipe is connected to the heating furnace.

[0014] The present invention is further configured such that the blower is provided with an air inlet pipe.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, this utility model provides an energy-saving device for the production of metallic silicon, which has the following beneficial effects:

[0017] The most significant technological innovation of this energy-saving equipment for silicon metal production lies in its unique quick-replacement filter mechanism, which completely solves the industry pain point of cumbersome and time-consuming filter maintenance in traditional equipment. The device employs a threaded locking structure, allowing for easy assembly and disassembly of the filter assembly through a simple rotation. Maintenance personnel only need to unscrew the threaded connecting plate at the top to directly remove the entire filter unit for cleaning or replacement, eliminating the need for complex tools and greatly simplifying the operation process.

[0018] The device's pressure distribution system is ingeniously designed, forming a multi-layered pressure balance structure through elastic elements. The combination of the upper spring and the contact plate ensures a tight seal between the filter and the pipeline, effectively preventing gas leakage and bypass. Simultaneously, the multi-point uniform force design avoids localized stress concentration, extending the filter's lifespan. The central pressure plate and pressure bar structure further enhances the system's stability, maintaining structural integrity and normal function even under high temperature and high pressure environments. This multi-layered protection mechanism not only improves filtration efficiency but also significantly enhances the system's reliability under harsh operating conditions, saving companies maintenance costs and spare parts investment.

[0019] This equipment's innovative design in airflow control and heat recovery provides a novel energy-saving solution for silicon metal production. The equipment employs an innovative unidirectional flow control system, which achieves intelligent airflow regulation through a precisely designed elastic balance mechanism. When the gas pressure inside the heating furnace reaches a set threshold, the unidirectional disc automatically lifts, opening the exhaust channel; conversely, when the gas pressure drops to a safe level, it automatically closes under the action of the elastic force, maintaining stable system pressure. This pressure-sensing-based automatic adjustment mechanism not only ensures the safety of the production process but also optimizes the airflow path and reduces energy loss. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of an energy-saving equipment for producing metallic silicon according to this utility model;

[0021] Figure 2 This is a schematic diagram of the exhaust pipe structure in this utility model;

[0022] Figure 3 This is a cross-sectional view of the exhaust pipe in this utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the pressure bar in this utility model;

[0024] Figure 5 This is a schematic diagram of the structure of the rolling ball in this utility model.

[0025] In the diagram: 1. Heating furnace; 2. Exhaust pipe; 3. Horizontal pipe; 4. Recovery pipe; 5. Filter screen; 6. Adhesion plate; 7. Spring; 8. Top plate; 9. Threaded plate; 10. Pressure plate; 11. Pressure rod; 12. Compression spring; 13. One-way disc; 14. One-way ring; 15. Guide sleeve; 16. Guide rod; 17. Ball bearing; 18. Contraction spring; 19. Blower; 20. Inlet pipe; 21. Air inlet pipe; 22. Hexagonal tube. Detailed Implementation

[0026] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0027] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0028] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0029] Please see Figure 1-5An energy-saving device for producing metallic silicon includes a heating furnace 1, which is installed on an external device. The heating furnace 1 is equipped with a replacement mechanism, which includes an exhaust pipe 2, a horizontal pipe 3, and a recovery pipe 4. Multiple exhaust pipes 2 are provided and connected to the heating furnace 1. Each exhaust pipe 2 is equipped with a horizontal pipe 3, and the multiple horizontal pipes 3 are connected to the recovery pipe 4. A filter screen 5 is provided on the exhaust pipe 2, and a bonding disc 6 is provided on the filter screen 5. A spring 7 is abutted on the bonding disc 6, and a top disc 8 is provided at the upper end of the spring 7. A threaded disc 9 is provided internally on the exhaust pipe 2, abutting against the top disc 8. A hexagonal tube 22 is installed on the threaded disc 9. A pressure plate 10 is provided in the middle of the spring 7, and the lower end of the pressure plate 10... The exhaust pipe 2 is provided with a pressure rod 11, the upper end of which is slidably connected to the hexagonal tube 22. The lower end of the pressure rod 11 is provided with a pressure spring 12, and the lower end of the pressure spring 12 is provided with a one-way disc 13. The exhaust pipe 2 is provided with a one-way ring 14 coaxially, and the one-way disc 13 presses on the one-way ring 14. The lower end of the one-way disc 13 is provided with a guide sleeve 15. The exhaust pipe 2 is provided with a guide rod 16, which is slidably connected to the guide sleeve 15. The guide sleeve 15 is provided with a ball bearing 17. The side wall of the exhaust pipe 2 is provided with multiple contraction springs 18 at equal intervals, and the contraction springs 18 abut against the ball bearing 17. The heating furnace 1 is provided with a blower 19, and the blower 19 is provided with an air inlet pipe 20. The other end of the air inlet pipe 20 is connected to the heating furnace 1. The blower 19 is provided with an air inlet pipe 21.

[0030] In this embodiment, during the production of metallic silicon, the raw material is first heated in a heating furnace 1, and air is blown in by a blower 19 to provide the necessary environment for production. When the internal air pressure is greater than the elastic force of the pressure spring 12 and multiple contraction springs 18, the one-way disc 13 moves upward, thereby disengaging the connection between the one-way disc 13 and the one-way ring 14, thus venting the gas. When the one-way disc 13 is opened, the force between the contraction spring 18 and the ball 17 changes direction, and the contraction spring 18 abuts against the lower end of the ball 17 to assist in opening, thus improving the opening speed. When the air pressure plus the elastic force of the contraction spring 18 is less than the elastic force of the pressure spring 12, the one-way disc 13 will continue to seal. After the seal is broken, the gas is filtered through the filter screen 5. At this time, the gas contains heat and is discharged into the heat recovery equipment through the recovery pipe 4 to complete the recovery process.

[0031] More specifically, when the corresponding filter screen 5 needs to be replaced, since the threaded disc 9 and the exhaust pipe 2 are connected by threads, first remove the threaded disc 9, and then replace the filter screen 5. At this time, the pressure plate 10 presses on the pressure rod 11, and the spring 7 presses on the bonding disc 6, thus completing the fixing process.

[0032] In summary, during the use or operation of the overall equipment: when producing metallic silicon, the raw material is first heated by the heating furnace 1, and air is blown in by the blower 19 to provide the necessary environment for production. When the internal air pressure is greater than the elastic force of the pressure spring 12 and multiple contraction springs 18, the one-way disc 13 moves upward, thereby disengaging the connection between the one-way disc 13 and the one-way ring 14, at which point the gas is discharged. When the one-way disc 13 is opened, the force between the contraction spring 18 and the ball 17 changes direction, and the contraction spring 18 abuts against the lower end of the ball 17 to help open it, thus improving the opening speed. When the air pressure plus the elastic force of the contraction spring 18 is less than the elastic force of the pressure spring 12, the one-way disc 13 will continue to seal. After the seal is broken, the gas is filtered through the filter screen 5. At this time, the gas contains heat and is discharged into the heat recovery equipment through the recovery pipe 4 to complete the recovery process.

[0033] When the corresponding filter screen 5 needs to be replaced, since the threaded disc 9 and the exhaust pipe 2 are connected by threads, first remove the threaded disc 9, and then replace the filter screen 5. At this time, the pressure plate 10 presses on the pressure rod 11, and the spring 7 presses on the bonding disc 6, thus completing the fixing process.

[0034] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. An energy-saving device for producing metallic silicon, comprising a heating furnace (1), characterized in that: The heating furnace (1) is installed on an external device. The heating furnace (1) is equipped with a replacement mechanism, which includes an exhaust pipe (2), a horizontal pipe (3), and a recovery pipe (4). There are multiple exhaust pipes (2), and the multiple exhaust pipes (2) are connected and installed on the heating furnace (1). Each exhaust pipe (2) is equipped with a horizontal pipe (3), and the multiple horizontal pipes (3) are connected and installed on the recovery pipe (4). The exhaust pipe (2) is equipped with a filter screen (5), and the filter screen (5) is equipped with a bonding plate (6). The bonding plate (6) is abutted by a spring (7), and the upper end of the spring (7) is equipped with a top plate (8). The exhaust pipe (2) is threaded with a threaded plate (9), and the threaded plate (9) abuts against the top plate (8). The threaded plate (9) is equipped with a hexagonal tube (22).

2. The energy-saving equipment for producing metallic silicon according to claim 1, characterized in that: The spring (7) has a pressure plate (10) in the middle, and the lower end face of the pressure plate (10) has a pressure rod (11), the upper end of the pressure rod (11) is slidably connected in the hexagonal tube (22).

3. The energy-saving equipment for producing metallic silicon according to claim 2, characterized in that: The lower end of the pressure rod (11) is provided with a pressure spring (12), and the lower end of the pressure spring (12) is provided with a one-way disc (13).

4. The energy-saving equipment for producing metallic silicon according to claim 3, characterized in that: The exhaust pipe (2) is coaxially provided with a one-way ring (14), and the one-way disc (13) presses on the one-way ring (14).

5. The energy-saving equipment for producing metallic silicon according to claim 4, characterized in that: The lower end of the one-way disc (13) is provided with a guide sleeve (15), and the exhaust pipe (2) is provided with a guide rod (16), which is slidably connected in the guide sleeve (15).

6. The energy-saving equipment for producing metallic silicon according to claim 5, characterized in that: The guide sleeve (15) is provided with a ball (17), and the side wall of the exhaust pipe (2) is provided with a plurality of contraction springs (18) at equal intervals, and the contraction springs (18) abut against the ball (17).

7. The energy-saving equipment for producing metallic silicon according to claim 1, characterized in that: The heating furnace (1) is equipped with a blower (19), and the blower (19) is equipped with an air inlet pipe (20). The other end of the air inlet pipe (20) is connected to the heating furnace (1).

8. The energy-saving equipment for producing metallic silicon according to claim 7, characterized in that: The blower (19) is equipped with an air inlet pipe (21).

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