Novel industrial silicon furnace charge pipe blanking turning plate structure

Abstract

The utility model discloses a novel industrial silicon furnace charge pipe blanking turning plate structure and relates to the field of industrial silicon smelting. A vertical through opening is formed in the center of a valve body and used for conveying materials, rotating shafts are symmetrically installed on the two sides of the valve body, cranks are connected to the inner sides of the rotating shafts, valve rods are connected to the outer sides of the rotating shafts, and the cranks and the valve rods form obtuse angles; the valve rod is provided with a sliding groove for installing a slidable heavy hammer. Through interaction of gravity torque of the heavy hammer, material gravity and vibration torque, opening and closing of the valve plate are achieved through transmission of the rotating shaft, the crank and the valve rod to control discharging. The baffle prevents materials from overflowing, and the structure with the wide upper portion and the narrow lower portion optimizes flow guiding. Compared with the prior art, efficient smoke sealing is achieved through normally-closed gravity flap valves, an injection fan is omitted, by taking nine discharging pipes of a single furnace as an example, 173 kw.h and 448 kw.h of power consumption can be reduced every year, about 74 yuan and 583 yuan of electric charge can be saved every year, meanwhile 120-decibel noise pollution is eliminated, the operation and maintenance process is simplified, electrical potential safety hazards are reduced, discharging control is optimized, and production efficiency and safety are improved.

Description

Technical Field

[0001] This utility model relates to the field of industrial silicon smelting, specifically a novel industrial silicon furnace material tube feeding flap structure. Background Technology

[0002] In the industrial silicon smelting process, the stability and efficiency of the furnace charge conveying system play a crucial role in production efficiency, energy consumption control, and environmental protection indicators. Traditional industrial silicon furnace charge pipes generally adopt a structure design of hopper-vibrating feeder-injection fan-furnace chamber. This system aims to orderly convey industrial silicon charge from the hopper into the furnace chamber. The vibrating feeder is responsible for evenly conveying the charge from the hopper to the discharge channel, while the injection fan, as a key component of the system, needs to operate 24 hours a day. Its core function is to continuously inject air into the charge pipe to create a positive pressure environment inside, thereby preventing high-temperature flue gas from escaping upwards along the charge pipe and avoiding flue gas overflow that could pollute the production environment and harm the health of operators.

[0003] However, this traditional structure has revealed many problems in practical applications. First, the noise generated by the injection blower during long-term continuous operation can reach 120 decibels, far exceeding the national industrial environmental noise standards, posing a serious threat to the surrounding environment and the hearing health of operators, while also increasing the company's cost investment in noise control. Second, the injection blower requires electrical personnel to regularly perform maintenance work such as lubrication and equipment inspection. A single industrial silicon furnace is usually equipped with multiple feeding pipes, corresponding to multiple injection blowers. Frequent maintenance operations not only consume a lot of manpower costs, but also increase the risk of equipment failure and downtime for maintenance, affecting the continuity of production.

[0004] In terms of energy consumption, the drawbacks of the traditional structure are even more significant. Taking a single industrial silicon furnace with nine feeding pipes as an example, each feeding pipe is equipped with a 2.2kW injection fan. Assuming continuous operation 24 hours a day and 365 days a year, the annual power consumption of a single furnace is as high as 2.2kW × 24h × 365 days × 9 = 173,448 kWh. If calculated based on an average electricity price of 0.43 yuan per kilowatt-hour, the annual electricity cost for the injection fans alone reaches 74,583 yuan. This undoubtedly places a heavy economic burden on enterprises and runs counter to the current trend of energy conservation, emission reduction, and green low-carbon development in industrial production.

[0005] With intensifying competition in the industrial silicon industry and increasingly stringent environmental policies, enterprises are placing higher demands on the energy efficiency, environmental performance, and intelligent level of their production equipment. How to reduce energy consumption, noise pollution, and simplify operation and maintenance processes while ensuring production efficiency has become a pressing issue for industrial silicon furnace material feeding systems. Against this backdrop, the development of a new industrial silicon furnace material feeding flap structure is imperative. This technological innovation optimizes the traditional feeding system to meet the urgent needs of sustainable development in the industry. Utility Model Content

[0006] The purpose of this utility model is to provide a novel industrial silicon furnace material pipe feeding flap structure. By utilizing the interaction between the gravitational torque generated by the sliding of the weight on the valve stem groove and the gravity and vibration torque of the material conveyed by the vibrating feeder, the valve plate is opened and closed through the transmission of the rotating shaft, crank and valve stem to achieve feeding control. At the same time, the valve body inspection port, baffle and the structure that is wider at the top and narrower at the bottom respectively play the roles of facilitating maintenance, preventing material overflow and optimizing flow.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A novel industrial silicon furnace feed pipe unloading flap structure includes a valve body. The valve body, as the basic component of the entire unloading flap structure, has a central, vertically penetrating opening. This opening serves as the channel for the industrial silicon furnace feed material to enter the furnace chamber from the vibrating feeder above. During normal operation, the material is fed through this opening.

[0009] Symmetrical shafts are mounted on both sides of the valve body, penetrating the body and providing support for the rotation of subsequent components. Multiple cranks are fixedly mounted on the inner side of the shafts, while the valve stem is fixedly mounted on the outer side. When the valve plate needs to open or close, the shafts act as rotation axes, allowing the cranks and valve stem to rotate around them.

[0010] The crank and valve stem form an obtuse angle, and when the crank is parallel, the valve stem is located on its outer side, angled downwards. This special angle design utilizes the lever principle to control the opening and closing of the valve plate. When the counterweight generates a downward force under gravity, the force is transmitted to the valve plate through the connection between the valve stem and the crank, thus affecting the state of the valve plate.

[0011] The valve plates are fixedly mounted on the crank on the same side. When the two valve plates are parallel, they fit against the inside of the opening on the valve body, and the two valve plates are in contact with each other. When no material is being fed, the weight of the counterweight, through the lever action of the valve rod and crank, keeps the valve plates closed, preventing material from falling when feeding is not needed. When the vibrating feeder starts working, the weight of the material overcomes the torque generated by the counterweight that closes the valve plates, causing the valve plates to rotate around the shaft and open, allowing the material to fall through the opening in the valve body.

[0012] The valve stem is provided with a sliding groove, and a counterweight is slidably installed in the groove on the same side. The counterweight can slide within the groove and is fixed to any part of the groove by fasteners. By adjusting the position of the counterweight on the valve stem, the magnitude of the torque it generates on the valve plate can be changed, thereby flexibly adjusting the ease of opening and closing the valve plate according to actual material feeding requirements.

[0013] Inspection ports are provided on both sides of the valve body. During long-term use, the material feeding flap structure may experience component wear and malfunctions. The inspection ports facilitate the inspection, repair, and replacement of internal valve body components such as the shaft, crank, and valve plate, ensuring the continuous and stable operation of the entire material feeding structure.

[0014] A baffle is installed next to the opening at the upper end of the valve body to prevent overflow during material feeding. When material falls into the valve body from the vibrating feeder, some material may overflow out of the opening due to impact and vibration. The baffle can block this overflowing material, allowing the material to enter the furnace more concentratedly through the valve body opening, improving the accuracy and efficiency of feeding, while also avoiding material waste and pollution to the surrounding environment.

[0015] This structure is installed between the discharge pipe and the feeder chute. The vibrating feeder is responsible for conveying the industrial silicon furnace charge to the discharge flap structure, which controls the discharge amount and timing. When the vibrating feeder starts, the material is conveyed above the valve body. At this point, based on actual needs, the cooperation of the counterweight and the valve plate determines whether the material enters the furnace, as well as the speed and amount of entry. The discharge flap structure installed between the two achieves effective control over the process from material conveying to entering the furnace.

[0016] The valve body and valve plate are made of 16Mn, the valve stem is made of 45# steel, the crank is made of Q235, the counterweight is made of Q235, and the shaft is made of QT450.

[0017] The upper part of the valve body is wider than the lower part. This structural design facilitates material flow. When material enters the valve body from the vibrating feeder, the wider upper part can more easily receive the material, preventing material accumulation at the inlet. As the material moves downward, the gradually narrowing lower part can concentrate the material, increasing the speed and stability of the material's descent, reducing the material's residence time in the valve body, improving feeding efficiency, and also helping to prevent material blockage within the valve body.

[0018] When this novel industrial silicon furnace material pipe feeding flap structure is in operation, in the non-feeding state, the counterweight, by its own weight, applies torque to the valve plate through a lever structure composed of a valve stem and crank. This causes the two valve plates to be parallel and fitted against the inner side of the upper opening of the valve body, achieving a seal and preventing material from falling. When the vibrating feeder starts and the material falls, if the weight of the material exceeds the closing torque generated by the counterweight, the valve plate rotates around the shaft and opens, allowing the material to enter the furnace through the vertical opening of the valve body. Simultaneously, the position of the counterweight within the valve stem groove can be adjusted to change the magnitude of the torque it generates on the valve plate, flexibly controlling the ease of opening and closing the valve plate. The inspection ports on both sides of the valve body facilitate maintenance of internal components, the baffle next to the upper opening prevents material overflow during feeding, and the valve body's design—wider at the top and narrower at the bottom—helps to concentrate and rapidly drop the material, improving feeding efficiency.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] Efficient smoke sealing and reduced energy consumption: Traditional structures rely on injection fans running 24 hours a day to prevent flue gas from rising, while the new structure uses gravity flap valves that remain normally closed when no material is being fed. This physical sealing effectively prevents flue gas from rising along the feed pipes in the furnace, eliminating the need for continuous operation of the injection fan. Taking a single furnace with 9 feed pipes as an example, this can reduce electricity consumption by 173,448 kWh annually, saving approximately 74,583 yuan in electricity costs, significantly reducing enterprise operating costs and achieving energy conservation and emission reduction.

[0021] Eliminating Noise Pollution: The continuous operation of the injection fan generates noise levels up to 120 decibels, severely impacting the working environment and personnel health. The new structure eliminates the injection fan, eradicating this source of noise pollution at its root. This significantly reduces noise levels in the working environment, meeting environmental standards, protecting the physical and mental health of operators, and reducing noise control costs for the company.

[0022] Streamlined Operation and Maintenance Processes: Traditional injection fans require regular lubrication and maintenance by electrical personnel, which is not only labor-intensive but also increases the risk of equipment failure and downtime. The new gravity flap valve has a simple structure with fewer mechanical parts, requiring minimal maintenance during daily operation. Only a few components such as the valve body and shaft need to be inspected periodically, greatly reducing the workload and labor costs of operation and maintenance, and improving the stability and continuity of the production system.

[0023] Enhancing production safety: Traditional structures with injection fans pose a risk of electrical failures over long-term operation, such as aging wiring and motor overheating, which could lead to safety accidents. The new gravity flap valve is based on a purely mechanical structure with no complex electrical components, reducing electrical safety hazards. At the same time, its reliable smoke sealing performance prevents smoke leakage from causing health hazards to operators, further improving production safety.

[0024] Optimized material feeding control: The gravity flap valve achieves automatic opening and closing through a counterweight and lever structure, which can flexibly control the opening and closing of the valve plate according to the weight of the material. Compared with the traditional structure, it can more accurately control the feeding amount and feeding time. In addition, the adjustable counterweight design on the valve stem allows operators to flexibly adjust the ease of valve plate opening and closing according to actual production needs, improving the adaptability and ease of operation of the feeding system.

[0025] The valve body features a reasonable structural design: inspection ports on both sides facilitate the inspection, maintenance, and replacement of internal components; a baffle next to the upper opening effectively prevents material spillage during feeding, improving feeding accuracy; and the valve body's design, wider at the top and narrower at the bottom, helps to concentrate and quickly drop materials, optimizing the feeding process and improving production efficiency. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the installation of a novel industrial silicon furnace material tube feed flap according to this utility model;

[0027] Figure 2 This is a schematic diagram of the installation of a novel industrial silicon furnace material tube feeding flap structure according to this utility model;

[0028] In the diagram: 1. Valve body; 2. Valve plate; 3. Valve stem; 4. Inspection port; 5. Crank; 6. Counterweight; 7. Shaft; 8. Baffle; 9. Feed pipe; 10. Feeder chute. Detailed Implementation

[0029] The technical solutions of the present invention will now be described in detail with reference to the accompanying drawings of the embodiments.

[0030] like Figure 1-2 As shown, a novel industrial silicon furnace feed pipe unloading flap structure includes a valve body 1 with a through-hole at the center. Rotary shafts 7 are symmetrically mounted on both sides of the valve body 1, passing through the valve body 1. Two cranks 5 are fixedly mounted on the inner side of each shaft 7, and a valve stem 3 is fixedly mounted on the outer side of each shaft 7. The cranks 5 and valve stem 3 form an obtuse angle, and when the cranks 5 are parallel, the valve stem 3 is located on the outer side, angled downwards. A valve plate 2 is fixedly mounted on the cranks 5 on the same shaft. When the two valve plates 2 are parallel, they fit against the inner side of the opening on the valve body 1, and the two valve plates 2 are aligned. A sliding groove is provided on the valve stem 3, and a counterweight 6 is slidably mounted in the same sliding groove. The counterweight 6 is fixed to any part of the sliding groove by fasteners.

[0031] Inspection ports 4 are provided on both sides of the valve body 1.

[0032] A baffle 8 is provided next to the opening at the upper end of the valve body 1 to prevent material from overflowing during feeding.

[0033] The structure is installed between the vibrating feeder and the furnace.

[0034] The valve body 1 and valve plate 2 are made of 16Mn, the valve stem 3 is made of 45# steel, the crank 5 is made of Q235, the counterweight 6 is made of Q235, and the shaft 7 is made of QT450.

[0035] The upper width of the valve body 1 is greater than the lower width.

[0036] At the industrial silicon production site, the new industrial silicon furnace material tube feeding flap structure is installed and operated according to the following steps: First, the structure is installed between the vibrating feeder and the furnace chamber, ensuring that the upper and lower through openings of the valve body 1 are precisely aligned with the discharge port of the vibrating feeder and the feed port of the furnace chamber, and then it is firmly fixed with bolts and other connecting parts to form a complete material conveying channel.

[0037] During the equipment commissioning phase, the position of the counterweight 6 within the groove of the valve stem 3 is adjusted according to the characteristics of the industrial silicon furnace charge and the production process requirements. Specifically, loosen the fasteners and slide the counterweight up and down along the groove. To improve the stability of the valve plate's closure, move the counterweight away from the rotating shaft 7 to increase the closing torque it generates on the valve plate 2; conversely, to make the valve plate easier to open, move the counterweight closer to the rotating shaft. After adjustment, tighten the fasteners to secure the counterweight and ensure it does not shift during operation.

[0038] During normal production operation, when the vibrating feeder is not started and is in a non-feeding state, the weight 6, by its own weight, applies a downward torque to the valve plate 2 through the lever structure composed of the valve stem 3 and the crank 5, so that the two valve plates are parallel and attached to the inside of the opening on the valve body 1 and are closed to each other, forming a sealing state, which effectively prevents the flue gas in the furnace from rising along the material pipe.

[0039] When furnace charge conveying is required, the vibrating feeder is started to convey the industrial silicon furnace charge from the hopper to above the valve body 1. As the material accumulates, when the material's own weight exceeds the closing torque generated by the counterweight 6, the valve plate 2 rotates around the shaft 7 and opens, allowing the material to fall smoothly into the furnace through the opening of the valve body 1. During this process, due to the structural design of the valve body 1, where the upper width is greater than the lower width, the material can fall more smoothly and centrally, avoiding accumulation and blockage inside the valve body; while the baffle 8 next to the upper opening of the valve body 1 can effectively prevent overflow caused by material impact or vibration, ensuring accurate and efficient feeding. This utility model is installed between the feeding pipe 9 and the feeder chute 10.

[0040] During long-term operation of the equipment, staff can periodically inspect the internal components through the inspection ports 4 on both sides of the valve body 1. This includes observing the rotational flexibility of the shaft 7, the tightness of the connection between the crank 5 and the valve stem 3, and the degree of wear on the valve plate 2. If wear or loosening is found, timely repair or replacement is necessary to ensure the continuous and stable operation of the entire feeding flap structure, providing a reliable material conveying guarantee for industrial silicon production.

Claims

1. A novel industrial silicon furnace charging pipe discharging flap structure, comprising a valve body (1), characterized in that, The valve body (1) has a through opening at the center. Rotary shafts (7) are symmetrically installed on both sides of the valve body (1). The rotating shafts (7) pass through the valve body (1) and have multiple cranks (5) fixedly installed on their inner side. A valve stem (3) is fixedly installed on its outer side. The cranks (5) and the valve stem (3) form an obtuse angle. When the cranks (5) are parallel, the valve stem (3) is located on its outer side and faces downward at an angle. A valve plate (2) is fixedly installed on the cranks (5) on the same side. When the valve plates (2) on both sides are parallel, they fit against the inner side of the opening on the valve body (1). At this time, the valve plates (2) on both sides are opposite to each other and cover the opening of the valve body (1). A sliding groove is provided on the valve stem (3). A counterweight (6) is slidably installed in the sliding groove on the same side. The counterweight (6) is fixed to any part of the sliding groove by fasteners.

2. A novel industrial silicon furnace charging pipe discharging flap structure according to claim 1, characterized in that, Inspection ports (4) are provided on both sides of the valve body (1).

3. The novel industrial silicon furnace material tube feeding flap structure according to claim 1, characterized in that, A baffle (8) is provided on the side of the upper opening of the valve body (1), and the baffle (8) restricts the overflow when the material is discharged.

4. The novel industrial silicon furnace charging pipe discharging flap structure according to claim 1, characterized in that, The valve body (1) and valve plate (2) are made of 16 manganese, the valve stem (3) is made of 45# steel, the crank (5) is made of Q235, the counterweight (6) is made of Q235, and the shaft (7) is made of QT450.

5. The novel industrial silicon furnace charging pipe discharging flap structure according to claim 1, characterized in that, The upper width of the valve body (1) is greater than the lower width.

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