A side-blown lead smelting furnace that is easy to inspect and maintain

Abstract

This invention belongs to the technical field of side-blown lead smelting furnaces, specifically disclosing a side-blown lead smelting furnace that is easy to inspect and maintain. It includes a settling chamber, a lead outlet channel connected to one side of the settling chamber, a connecting water jacket connected to the upper part of the outer wall of the settling chamber, a side-blowing mechanism connected to the upper end of the settling chamber and corresponding to the water jacket on the outer wall of the smelting chamber, a charging chamber connected to the upper end of the smelting chamber via a connecting mechanism, a flue pipe connected to the middle of the upper end of the charging chamber, the flue pipe being inclined, a feed inlet on the lower part of one side of the charging chamber, and a feeding mechanism connected to the upper end of the smelting chamber corresponding to the feed inlet. This invention achieves uniform material distribution and online self-cleaning through independently flippable guide plates and diffuser plates, and allows for quick replacement of components through detachable connections, significantly improving the convenience of inspection and maintenance and the equipment's operating rate.

Description

Technical Field

[0001] This invention belongs to the technical field of side-blown lead smelting furnaces, and specifically discloses a side-blown lead smelting furnace that is easy to inspect and maintain. Background Technology

[0002] Oxygen-enriched side-blown furnace smelting is a widely used pyrometallurgical technology in lead metal production or refining. Its core equipment, the side-blown furnace, is mainly used to reduce and extract metallic lead from lead-containing materials. The outer wall of the furnace is equipped with a copper water jacket, on which spray guns and tuyeres are arranged to blow oxygen-enriched air into the molten pool inside the furnace to maintain the smelting reaction. In terms of charging method, side-blown furnaces generally adopt top charging or side wall charging. The material is put into the furnace through the charging port and falls into the molten pool below by gravity. The reduction reaction of lead and slag-lead separation are completed in a high-temperature environment, realizing the production or refining of metallic lead. After long-term development, the side-blown furnace has the advantages of large processing capacity, high thermal efficiency, and wide raw material adaptability, and has become one of the core equipment of the lead smelting production line.

[0003] However, currently, side-blown lead smelting furnaces typically feed material directly into the furnace through a single inlet. Due to the limitations of the feeding method, the material falls in a relatively concentrated area and tends to accumulate in the furnace area near the inlet, making it difficult to achieve uniform distribution. This uneven material distribution directly affects the mass and heat transfer efficiency of the molten pool reaction, leading to furnace temperature fluctuations, increased slag lead levels, and in severe cases, even affecting the compliance of process tail gas emissions. Ultimately, this reduces the direct recovery rate of metallic lead and smelting efficiency. Furthermore, the temperature in the high-temperature flue gas zone inside the furnace can reach 800-1000℃, and the flue gas contains a large amount of lead dust and adhesive substances, which easily form ash and scabs on the surface of the material distribution components inside the furnace. These material distribution components are usually fixed in place, and once ash accumulation or wear occurs, the furnace must be shut down for cooling before manual cleaning or replacement is required. Shutdown and cooling usually take 3-5 days, which is not only labor-intensive and poses high safety risks, but also leads to prolonged production interruptions, seriously affecting equipment operating rates and metallic lead production capacity. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a side-blown lead smelting furnace that is easy to inspect and maintain.

[0005] To achieve the above objectives, the present invention provides a side-blown lead smelting furnace that is easy to inspect and maintain, including a settling chamber, a lead outlet channel connected to one side of the settling chamber, a connecting water jacket connected to the upper part of the outer wall of the settling chamber, a smelting chamber connected to the upper end of the settling chamber, and a side-blowing mechanism connected to the outer wall of the smelting chamber above the connecting water jacket.

[0006] The upper end of the smelting furnace chamber is connected to the charging furnace chamber via a connecting mechanism. The middle of the upper end of the charging furnace chamber is connected to a flue pipe, which is inclined. A feeding port is opened on the lower part of one side of the charging furnace chamber. A feeding mechanism is connected to the upper end of the smelting furnace chamber on the side corresponding to the feeding port.

[0007] A diffusion mechanism is connected to the upper part of one side of the smelting furnace chamber;

[0008] The diffusion mechanism includes an adjusting rod, one end of which is located on the upper part of one side of the melting furnace chamber, and the other end of which extends through into the interior of the melting furnace chamber. A stabilizing rod is connected to one end of the adjusting rod, and a fixing rod is connected to one side of each stabilizing rod. A diffusion plate is connected to one end of each of the two fixing rods. The diffusion plate is arranged with an arc-shaped structure both above and below.

[0009] A stabilizing ring is connected to one side of the inner wall of the smelting furnace. Each of the stabilizing rings is rotatably connected to a mounting plate on one side of its inner wall. There are five mounting plates in total. Each of the mounting plates is connected to a fixing block by fixing bolts on one side. Each of the fixing blocks is connected to a guide plate on the side away from the mounting plate.

[0010] Preferably, the side-blowing mechanism includes a fixed ring pipe, which is sleeved outside the smelting furnace chamber. The lower end of the fixed ring pipe is circumferentially connected to a conveying pipe, and the lower ends of the multiple conveying pipes are connected to conveying nozzles. One end of each conveying nozzle extends through into the interior of the smelting furnace chamber.

[0011] Preferably, the connecting mechanism includes a connecting ring, the lower end of which is connected to the upper end of the smelting furnace chamber. The connecting ring is C-shaped. A charging furnace chamber is connected above the connecting ring. The lower end of the charging furnace chamber is connected to the upper part of the connecting ring via a sealing gasket. An installation ring is connected to the lower part of the outer wall of the charging furnace chamber. The shape of the installation ring is adapted to the shape of the connecting ring. The upper end of the installation ring is connected to the flange of the connecting ring via installation bolts.

[0012] Preferably, the feeding mechanism includes a guide block, which is shaped like an inverted L and has an inclined upper end. Side plates are connected to both sides of the upper end of the guide block, and the guide block and the two side plates form a feeding channel. Guide balls are embedded in the upper part of one side of the guide block, and conveying rails are connected to both sides of the guide block. A conveying box slides above the conveying rails.

[0013] Preferably, a protective cylinder is connected to one side of the upper end of the feeding chamber, and a hydraulic cylinder is connected to the inner wall of the protective cylinder. The lower end of the hydraulic cylinder extends through into the interior of the feeding chamber, and a baffle is connected to the output end of the hydraulic cylinder. The baffle slides on one side of the inner wall of the feeding chamber. The shape of the baffle is adapted to the shape of the feed inlet, and the shape of the lower end of the baffle is adapted to the shape of the upper end of the guide block.

[0014] Preferably, an adjusting block is connected to the end of the adjusting rod away from the stabilizing rod, and a rotating groove is provided on one side of the adjusting block. A stabilizing block is connected to the side of the smelting furnace chamber corresponding to the adjusting rod. The stabilizing block is sleeved onto the outer wall of the adjusting rod. The position of the adjusting rod is fixed on one side of the stabilizing block by a transverse bolt. A first through hole is provided on the stabilizing block and the adjusting rod corresponding to the transverse bolt, and the transverse bolt is located inside the first through hole.

[0015] Preferably, the guide plate is inclined, and there are five guide plates. Both ends of the multiple guide plates are rounded, and the five guide plates are combined to form a large guide plate. The upper end of the stabilizing ring is inclined, and the inner wall of the stabilizing ring is inclined.

[0016] Preferably, a rotating rod is connected to the middle of one side of each of the mounting plates. One end of each of the rotating rods passes through the stabilizing ring and the smelting furnace chamber and extends to one side of the smelting furnace chamber. An operating block is connected to one end of each of the rotating rods. An operating groove is provided on one side of the operating block. Limiting blocks are connected to the outer wall of the smelting furnace chamber at the locations corresponding to the rotating rods. The limiting blocks are respectively fitted onto one side of the outer wall of the rotating rods. The position of the rotating rods is fixed on one side of the limiting blocks by limiting bolts. A second through hole is provided at the location of the limiting bolts on the limiting blocks and rotating rods. The limiting bolts are located inside the corresponding second through holes.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] This invention, by setting an inclined guiding surface formed by five guide plates, guides the material entering from the side wall inlet towards the center of the smelting furnace chamber, and then further distributes it evenly in all directions through the arc-shaped diffuser plates above and below, so that the material can cover the entire molten pool area, avoiding local accumulation and significantly improving the uniformity of material distribution and the efficiency of the molten pool reaction. The closed feeding channel formed by the guide block and the two side plates effectively prevents material spillage, and the guide ball converts the sliding friction between the feed box and the guide block into rolling friction, reducing wear and making positioning more accurate. The baffle and the inclined surface of the upper end of the guide block form a seal, which automatically opens when feeding and automatically closes after feeding to prevent flue gas from overflowing, thus improving the environmental protection and automation level of the production process.

[0019] By connecting the five guide plates to rotating rods extending outside the furnace, operators can independently flip any guide plate outside the furnace, using the impact force of falling materials to remove accumulated ash on its back, achieving online self-cleaning of the guide plates. The diffuser plate can also achieve self-cleaning by flipping it outside the furnace via an adjustment rod, without stopping the furnace or requiring manual entry into the furnace. The guide plates are detachably connected to the mounting plate via fixing blocks, and can be quickly replaced by simply removing the charging chamber when worn. The charging chamber is connected to the smelting furnace flange via a C-shaped connecting ring, making disassembly and assembly convenient. The above structure allows each vulnerable component inside the furnace to be handled independently and quickly, significantly shortening maintenance downtime and greatly improving the convenience of equipment maintenance. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the device of the present invention;

[0021] Figure 2 This is a schematic diagram of the installation structure of the diffusion mechanism and multiple guide plates of the present invention;

[0022] Figure 3 This is an overall cross-sectional view of the device of the present invention;

[0023] Figure 4 This is a schematic diagram of the connection structure between the guide block and the two side plates of the present invention;

[0024] Figure 5 This is a schematic diagram of the overall structure of the diffusion mechanism of the present invention;

[0025] Figure 6 This is a schematic diagram of the installation structure of the stabilizing ring and multiple guide plates of the present invention;

[0026] Figure 7 This is a schematic diagram of the installation structure of the limiting bolt of the present invention;

[0027] Figure 8 For the present invention Figure 3 A magnified structural diagram of A;

[0028] Figure 9 This is a schematic diagram of the installation structure of the stabilizing ring, mounting plate, and fixing block of the present invention.

[0029] In the diagram: 1. Settling chamber; 2. Lead outlet channel; 3. Connecting water jacket; 4. Smelting chamber; 5. Fixed ring pipe; 6. Conveying pipe; 7. Conveying nozzle; 8. Connecting ring; 9. Feeding chamber; 10. Mounting ring; 11. Exhaust pipe; 12. Feed inlet; 13. Guide block; 14. Side plate; 15. Guide ball; 16. Protective cylinder; 17. Hydraulic cylinder; 18. Baffle; 19. Conveying rail; 20. Adjusting rod; 21. Adjusting block; 22. Stabilizing rod; 23. Fixing rod; 24. Diffuser plate; 25. Stabilizing block; 26. Horizontal bolt; 27. Stabilizing ring; 28. Mounting plate; 29. ​​Fixing block; 30. Guide plate; 31. Rotating rod; 32. Limiting block; 33. Limiting bolt; 34. Operating block. Detailed Implementation

[0030] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] Numerous specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the invention is not limited to the specific embodiments disclosed below.

[0032] like Figures 1-9 The side-blown lead smelting furnace shown is easy to inspect and maintain. It includes a settling chamber 1, a lead outlet channel 2 connected to one side of the settling chamber 1, and a slag outlet channel connected to the other side for slag discharge. A water jacket 3 is connected to the upper part of the outer wall of the settling chamber 1. A smelting chamber 4 is connected to the upper end of the settling chamber 1. A side-blowing mechanism is connected to the outer wall of the smelting chamber 4 above the water jacket 3. The side-blowing mechanism includes a fixed ring pipe 5, which is sleeved outside the smelting chamber 4. The lower end of the fixed ring pipe 5 is... A conveying pipe 6 is connected circumferentially, and a conveying nozzle 7 is connected to the lower end of multiple conveying pipes 6. One end of the conveying nozzle 7 extends through into the interior of the smelting furnace chamber 4. A charging furnace chamber 9 is connected to the upper end of the smelting furnace chamber 4 through a connecting mechanism. A smoke exhaust pipe 11 is connected to the middle of the upper end of the charging furnace chamber 9. The smoke exhaust pipe 11 is set at an inclination. A feed inlet 12 is opened at the lower part of one side of the charging furnace chamber 9. A feeding mechanism is connected to the upper end of the smelting furnace chamber 4 on the side corresponding to the feed inlet 12. A diffusion mechanism is connected to the upper side of one side of the smelting furnace chamber 4.

[0033] The settling chamber 1, serving as the bottom hearth, is used to collect and separate crude lead from slag. Its internal siphon chamber continuously discharges crude lead through the lead outlet channel 2. The connecting water jacket 3 cools and protects the furnace wall with circulating water. The smelting chamber 4 is the main site for the lead reduction reaction. The fixed ring pipe 5 of the side-blowing mechanism distributes oxygen-enriched air to multiple conveying pipes 6, which are then sprayed into the slag layer of the molten pool by the conveying nozzles 7 to agitate the melt. The connecting mechanism enables rapid assembly and disassembly of the charging chamber 9 and the smelting chamber 4. The inclined exhaust pipe 11 at the top of the charging chamber 9 facilitates the natural settling of smoke and dust. The inlet 12 connects to the feeding mechanism, guiding the material in and automatically sealing it. The diffusion mechanism further evenly distributes the material to the molten pool area, ensuring smelting efficiency.

[0034] like Figures 1-4 As shown: The connecting mechanism includes a connecting ring 8, the lower end of which is connected to the upper end of the smelting furnace chamber 4. The connecting ring 8 is C-shaped. A charging furnace chamber 9 is connected above the connecting ring 8. The lower end of the charging furnace chamber 9 is connected to the upper part of the connecting ring 8 through a sealing gasket. An installation ring 10 is connected to the lower part of the outer wall of the charging furnace chamber 9. The shape of the installation ring 10 is adapted to the shape of the connecting ring 8. The upper end of the installation ring 10 is connected to the flange of the connecting ring 8 through installation bolts.

[0035] The sealing gasket is made of high-temperature resistant ceramic fiber material, forming a reliable seal between the charging chamber 9 and the smelting chamber 4 to prevent high-temperature flue gas leakage. The mounting ring 10 and the connecting ring 8 are connected by mounting bolts and flanges, allowing the charging chamber 9 and the smelting chamber 4 to be detachably fixed. When it is necessary to repair or replace the baffle 18, hydraulic cylinder 17 and other components inside the charging chamber 9, the entire charging chamber 9 can be lifted away simply by removing the mounting bolts, without the need for cutting or welding. After the repair is completed, it can be lifted back to its original position, aligned with the connecting ring 8 and the mounting bolts tightened to complete the installation. This greatly shortens the repair time and significantly improves the ease of equipment maintenance.

[0036] like Figures 1-4 As shown: The feeding mechanism includes a guide block 13, which is in the shape of an inverted L-shape. The upper part of the guide block 13 is inclined. Side plates 14 are connected to both sides of the upper part of the guide block 13. The guide block 13 and the two side plates 14 form a feeding channel. Guide balls 15 are embedded in the upper part of one side of the guide block 13. Conveying rails 19 are connected to both sides of the guide block 13. A conveying box slides above the conveying rails 19. A protective cylinder 16 is connected to one side of the upper part of the feeding chamber 9. A hydraulic cylinder 17 is connected to the inner wall of the protective cylinder 16. The lower end of the hydraulic cylinder 17 extends through into the interior of the feeding chamber 9. A baffle 18 is connected to the output end of the hydraulic cylinder 17. The baffle 18 slides on one side of the inner wall of the feeding chamber 9. The shape of the baffle 18 is adapted to the shape of the inlet 12. The shape of the lower end of the baffle 18 is adapted to the shape of the upper end of the guide block 13.

[0037] Material is lifted from one side of the conveyor box by an externally installed material-lifting device. The guide block 13 receives the material unloaded from the conveyor box and guides it to the inlet 12 by gravity. The closed inlet channel formed by the side plate 14 and the guide block 13 restricts the material's slippage path and prevents the material from spilling to both sides. The guide ball 15 is embedded in the upper part of the guide block 13. When the conveyor box moves above the guide block 13, it contacts the bottom of the conveyor box, converting sliding friction into rolling friction. This reduces the frictional resistance between the conveyor box and the guide block 13 and protects the surface of the guide block 13 from wear. Meanwhile, the material conveying box is positioned more accurately and smoothly. The material conveying rail 19 is used to support and guide the material conveying box to move back and forth, so as to realize the horizontal transportation of materials. The protective cylinder 16 is used to contain and protect the hydraulic cylinder 17, and prevent the hydraulic cylinder 17 from being damaged by high temperature radiation from the furnace top and external collisions. The hydraulic cylinder 17 is used to drive the baffle 18 to rise and fall, so as to realize the automatic opening and closing of the feed port 12. The baffle 18 is used to open the feed port 12 to allow the material to pass through when feeding, and to close the feed port 12 after feeding is completed. Its lower end is in contact with the inclined surface of the upper end of the guide block 13 to form a seal, preventing the high temperature flue gas in the furnace from overflowing.

[0038] like Figure 2 , Figure 3 and Figure 5 As shown: The diffusion mechanism includes an adjusting rod 20. One end of the adjusting rod 20 is located on the upper part of one side of the smelting furnace chamber 4, and the other end of the adjusting rod 20 extends through into the interior of the smelting furnace chamber 4. One end of the adjusting rod 20 is connected to a stabilizing rod 22. One side of the stabilizing rod 22 is connected to a fixing rod 23. One end of the two fixing rods 23 is connected to a diffusion plate 24. The diffusion plate 24 is arranged with an arc-shaped structure at the top and bottom. The end of the adjusting rod 20 away from the stabilizing rod 22 is connected to an adjusting block 21. A rotating groove is opened on one side of the adjusting block 21. A stabilizing block 25 is connected to one side of the smelting furnace chamber 4 corresponding to the adjusting rod 20. The stabilizing block 25 is sleeved on the outer wall of the adjusting rod 20. The position of the adjusting rod 20 is fixed on one side of the stabilizing block 25 by a transverse bolt 26. A first through hole is opened on the stabilizing block 25 and the adjusting rod 20 corresponding to the transverse bolt 26. The transverse bolt 26 is located inside the first through hole.

[0039] The adjusting rod 20 is used to transfer the rotation operation outside the furnace to the inside of the furnace, realizing the angle adjustment and flipping of the diffuser plate 24; the stabilizing rod 22 and the fixing rod 23 transmit the rotational power to the diffuser plate 24 and ensure its rotational stability; the upper and lower surfaces of the diffuser plate 24 are both arc-shaped, and the material spreads evenly in all directions after impact. The symmetrical structure ensures that the material distribution effect remains unchanged after flipping 180°; the rotating groove of the adjusting block 21 facilitates operation outside the furnace; the stabilizing block 25 provides radial support for the adjusting rod 20; the transverse bolt 26 passes through the first through hole and abuts against the adjusting rod 20 to lock the adjustment position and prevent vibration deviation during operation; when cleaning the ash accumulation, the transverse bolt 26 is loosened, and the diffuser plate 24 is flipped 180° through the adjusting block 21, flipping the original lower surface to the upper surface, and the ash accumulation is removed by the impact of subsequent materials, realizing online self-cleaning without stopping the furnace or manually entering the furnace.

[0040] like Figures 6-9 As shown: A stabilizing ring 27 is connected to one side of the inner wall of the smelting furnace chamber 4. Mounting plates 28 are rotatably connected to one side of the inner wall of each stabilizing ring 27. There are five mounting plates 28. Fixing blocks 29 are connected to one side of each mounting plate 28 via fixing bolts. Guide plates 30 are connected to the side of each fixing block 29 away from the mounting plates 28. The guide plates 30 are inclined in shape. There are five guide plates 30, and both ends of each guide plate 30 are rounded. The five guide plates 30 are combined to form a large guide plate 30. The upper end of the stabilizing ring 27 is inclined, and the inner wall of the stabilizing ring 27 is also inclined. The middle of one side of each mounting plate 28... A plurality of rotating rods 31 are connected, with one end of each rotating rod 31 passing through a stabilizing ring 27 and a melting furnace chamber 4 and extending to one side of the melting furnace chamber 4. One end of each rotating rod 31 is connected to an operating block 34, and an operating groove is provided on one side of the operating block 34. Limiting blocks 32 are connected to the outer wall of the melting furnace chamber 4 at the locations corresponding to the multiple rotating rods 31. The multiple limiting blocks 32 are respectively fitted onto one side of the outer wall of the multiple rotating rods 31. The position of the rotating rods 31 is fixed on one side of the multiple limiting blocks 32 by limiting bolts 33. Second through holes are provided at the locations corresponding to the limiting bolts 33 on the multiple limiting blocks 32 and the rotating rods 31. The multiple limiting bolts 33 are respectively located inside the corresponding second through holes.

[0041] The stabilizing ring 27 provides a mounting base for the five guide plates 30. Its inclined inner wall matches the inclination angle of the guide plates 30, ensuring that the guide plates 30 maintain a suitable guiding angle during rotation. The mounting plate 28 rotatably connects the guide plates 30 to the stabilizing ring 27, allowing each guide plate 30 to rotate independently around the rotating rod 31. The fixing block 29 is detachably connected to the mounting plate 28 via fixing bolts, fixing the guide plates 30 to the mounting plate 28 for easy disassembly and replacement. The large inclined guiding surface formed by the combination of the five guide plates 30 guides the material falling from the charging furnace chamber 9 towards the center of the melting furnace chamber 4, achieving initial uniform distribution. The arc-shaped design at both ends of the guide plates 30 creates clearance space with adjacent guide plates 30 or the furnace wall during rotation, preventing... The rotating rod 31 extends the rotation axis of the guide plate 30 to the outside of the furnace, enabling external operation. The operating block 34 and its operating groove on one side are used to cooperate with tools, facilitating the operator to rotate the rotating rod 31 outside the furnace. The limiting block 32 provides radial support for the rotating rod 31. The limiting bolt 33 passes through the second through hole and abuts against the rotating rod 31, locking it after the guide plate 30 is adjusted to the correct position to prevent vibration rotation during operation. When the ash accumulation on the back of the guide plate 30 needs to be cleaned, loosening the limiting bolt 33 and rotating the rotating rod 31 can cause the guide plate 30 to rotate 180°, with the original ash-covered side facing upwards, allowing subsequent material impact to remove the accumulated ash. When the guide plate 30 is worn and needs to be replaced, loosening the fixing bolts can remove the fixing block 29 along with the guide plate 30 from the mounting plate 28 for replacement.

[0042] It should be noted that the specific connection methods and control methods of the locking and driving elements such as the hydraulic cylinder 17, transverse bolt 26, limit bolt 33, fixing bolt, and mounting bolt involved in the embodiments of the present invention are all conventional technical means in the art and belong to the scope of prior art. The hydraulic pipeline connection and control system of the hydraulic cylinder 17 can be controlled by conventional hydraulic stations and solenoid valves according to actual needs; the specific specifications and tightening torque of the threaded connections such as the transverse bolt 26, limit bolt 33, fixing bolt, and mounting bolt can be conventionally calculated and selected by those skilled in the art according to load requirements; the external material pulling mechanism of the conveying box can be realized by conventional winches, electric push rods, or chain drives; the specific circuit connection and control methods of the above-mentioned actuators and control elements can be selected by those skilled in the art according to actual needs and conventionally designed, and their specific working principles will not be elaborated here.

[0043] Working principle: During operation, the material conveying box moves along the conveying rail 19 to the top of the guide block 13 via the external pulling mechanism and stops accurately outside the inlet 12. The discharge door at the bottom of the material conveying box opens, and the material falls into the inclined surface at the top of the guide block 13. The side plates 14 on both sides of the guide block 13 form a closed inlet channel to prevent material spillage. The guide ball 15 is embedded in the upper part of one side of the guide block 13. When the material conveying box moves to the top of the guide block 13, the guide ball 15 contacts the bottom of the material conveying box, converting sliding friction into rolling friction, which greatly reduces the frictional resistance between the material conveying box and the guide block 13. This protects the surface of the guide block 13 from wear and makes the positioning of the material conveying box more accurate and smooth.

[0044] At the same time, the hydraulic cylinder 17 inside the protective cylinder 16 drives the baffle 18 to rise and open the feed port 12. The material slides smoothly into the feeding chamber 9 along the inclined surface of the guide block 13. The shape of the lower end of the baffle 18 matches the inclined surface of the upper end of the guide block 13 to ensure that the material passes smoothly without leaving any dead corners.

[0045] After the material enters the charging chamber 9, it falls onto the five guide plates 30 inside the melting chamber 4. The five guide plates 30 combine to form a large inclined guide surface, which guides the falling material towards the center of the melting chamber 4. The material is guided during the sliding process, avoiding accumulation in a single area and achieving initial uniform distribution.

[0046] The material initially distributed by the guide plate 30 falls into the area of ​​the diffuser plate 24. After the material hits the upper arc surface of the diffuser plate 24, it spreads further in all directions and is evenly distributed to the molten pool area at the bottom of the smelting furnace chamber 4.

[0047] At the same time, the side-blowing mechanism starts working, and the fixed ring pipe 5 delivers oxygen-enriched air or fuel to multiple conveying pipes 6, which are then sprayed into the slag layer of the molten pool inside the smelting furnace chamber 4 through the conveying nozzles 7. The high-speed airflow agitates the melt, allowing the material to fully contact the molten pool and complete the lead reduction reaction in a high-temperature environment. The crude lead produced by the reaction has a relatively high density and settles into the settling furnace chamber 1, and is continuously discharged through the lead outlet channel 2. The slag has a relatively low density and floats on the surface of the molten lead, and is discharged through the slag outlet at the bottom of the smelting furnace chamber 4. The high-temperature flue gas generated by the reaction rises and is discharged through the exhaust pipe 11 at the top of the charging furnace chamber 9, and enters the subsequent waste heat recovery and dust collection equipment.

[0048] When feeding, the baffle 18 is raised and opened. After feeding is completed, the baffle 18 is lowered and closed the feed port 12, which not only prevents the material from spilling, but also ensures the sealing inside the furnace. The baffle 18 is driven by the hydraulic cylinder 17, and its operation is stable and reliable.

[0049] Five guide plates 30 are rotatably connected to the inner wall of the stabilizing ring 27 via mounting plates 28. Each guide plate 30 corresponds to a rotating rod 31 extending to the outside of the smelting furnace chamber 4. When the back of the guide plate 30 is heavily covered with ash, the operator can loosen the limiting bolts 33 on the corresponding limiting block 32 outside the furnace and rotate the rotating rod 31 through the operating block 34 to flip the guide plate 30 180°. Since the two ends of the guide plate 30 are designed with arcs, it will not get stuck with adjacent guide plates 30 or the furnace wall during the flipping process. After flipping, the original ash-covered side faces upward. Tighten the limiting bolts 33 to lock it. When feeding material later, the material falls and hits the guide plate 30, using the impact force of the material to shake off the ash and achieve online self-cleaning. After cleaning, the guide plate 30 is flipped back to the working position and the limiting bolts 33 are tightened again to lock it.

[0050] When the guide plate 30 is severely worn and needs to be replaced, the bolts of the mounting ring 10 can be removed, the furnace chamber 9 can be lifted away, the fixing bolts can be loosened, and the fixing block 29 along with the guide plate 30 can be removed from the mounting plate 28, replaced with a new plate and reinstalled.

[0051] When it is necessary to clean the diffuser plate 24, loosen the horizontal bolt 26 on the stabilizing block 25, rotate the adjusting block 21 to drive the adjusting rod 20 to rotate 180°, so that the diffuser plate 24 flips over. After flipping, tighten the horizontal bolt 26 to fix it. Subsequent materials fall and hit the diffuser plate 24, using the impact force of the materials to shake off the accumulated dust, thus achieving online self-cleaning.

[0052] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A side-blown lead converting furnace facilitating maintenance and repair, comprising a settling furnace chamber (1), characterized in that, The settling furnace chamber (1) is connected to a lead outlet channel (2) on one side. A connecting water jacket (3) is connected to the upper part of the outer wall of the settling furnace chamber (1). A smelting furnace chamber (4) is connected to the upper end of the settling furnace chamber (1). A side blowing mechanism is connected to the upper part of the connecting water jacket (3) on the outer wall of the smelting furnace chamber (4). The upper end of the smelting furnace chamber (4) is connected to the charging furnace chamber (9) via a connecting mechanism. The middle of the upper end of the charging furnace chamber (9) is connected to the exhaust pipe (11). The exhaust pipe (11) is set at an inclination. The lower part of one side of the charging furnace chamber (9) is provided with a feed port (12). The upper end of the smelting furnace chamber (4) is connected to the feeding mechanism on the side corresponding to the feed port (12). A diffusion mechanism is connected to the upper part of one side of the smelting furnace chamber (4); The diffusion mechanism includes an adjusting rod (20), one end of which is located on the upper side of the melting furnace chamber (4), and the other end of which extends through into the interior of the melting furnace chamber (4). A stabilizing rod (22) is connected to one end of the adjusting rod (20), and a fixing rod (23) is connected to one side of the stabilizing rod (22). A diffusion plate (24) is connected to one end of each of the two fixing rods (23). The diffusion plate (24) is arranged with an arc-shaped structure at the top and bottom. A stabilizing ring (27) is connected to one side of the inner wall of the smelting furnace chamber (4). A mounting plate (28) is rotatably connected to one side of the inner wall of the stabilizing ring (27). There are five mounting plates (28). A fixing block (29) is connected to one side of the mounting plates (28) by fixing bolts. A guide plate (30) is connected to the side of the fixing blocks (29) away from the mounting plates (28). The adjusting rod (20) is connected to an adjusting block (21) at the end away from the stabilizing rod (22). A rotating groove is provided on one side of the adjusting block (21). A stabilizing block (25) is connected to one side of the smelting furnace chamber (4) corresponding to the adjusting rod (20). The stabilizing block (25) is sleeved onto the outer wall of the adjusting rod (20). The position of the adjusting rod (20) is fixed on one side of the stabilizing block (25) by a transverse bolt (26). A first through hole is provided on the stabilizing block (25) and the adjusting rod (20) corresponding to the transverse bolt (26). The transverse bolt (26) is located inside the first through hole. The guide plate (30) is inclined, and there are five guide plates (30). Both ends of the multiple guide plates (30) are rounded. The five guide plates (30) are combined to form a large guide plate (30). The upper end of the stabilizing ring (27) is inclined, and the inner wall of the stabilizing ring (27) is inclined. A rotating rod (31) is connected to the middle of one side of each of the mounting plates (28). One end of each of the rotating rods (31) passes through the stabilizing ring (27) and the smelting furnace chamber (4) and extends to one side of the smelting furnace chamber (4). One end of each of the rotating rods (31) is connected to an operating block (34). An operating groove is provided on one side of the operating block (34). A limiting block (32) is connected to each of the rotating rods (31) on the outer wall of the smelting furnace chamber (4). Each of the limiting blocks (32) is fitted onto one side of the outer wall of the rotating rods (31). The position of the rotating rods (31) is fixed by a limiting bolt (33) on one side of each of the limiting blocks (32). A second through hole is provided at each of the limiting bolts (33) on the corresponding limiting blocks (32) and rotating rods (31). Each of the limiting bolts (33) is located inside the corresponding second through hole.

2. A side-blown lead-reverberatory furnace facilitating maintenance and repair, according to claim 1, characterized in that, The side-blowing mechanism includes a fixed ring pipe (5), which is sleeved outside the smelting furnace chamber (4). The lower end of the fixed ring pipe (5) is circumferentially connected to a conveying pipe (6), and the lower end of the multiple conveying pipes (6) is connected to a conveying nozzle (7). One end of the conveying nozzle (7) extends through into the interior of the smelting furnace chamber (4).

3. A side-blown lead-reverberatory furnace facilitating maintenance and repair, according to claim 1, characterized in that, The connecting mechanism includes a connecting ring (8), the lower end of which is connected to the upper end of the smelting furnace chamber (4). The connecting ring (8) is C-shaped. A charging furnace chamber (9) is connected above the connecting ring (8). The lower end of the charging furnace chamber (9) is connected to the upper end of the connecting ring (8) through a sealing gasket. An installation ring (10) is connected to the lower part of the outer wall of the charging furnace chamber (9). The shape of the installation ring (10) is adapted to the shape of the connecting ring (8). The upper end of the installation ring (10) is connected to the flange of the connecting ring (8) through an installation bolt.

4. A side-blown lead-reverberatory furnace facilitating maintenance and repair, according to claim 1, characterized in that, The feeding mechanism includes a guide block (13), which is in the shape of an inverted L-shape. The upper part of the guide block (13) is inclined. Side plates (14) are connected to both sides of the upper part of the guide block (13). The guide block (13) and the two side plates (14) form a feeding channel. Guide balls (15) are embedded in the upper part of one side of the guide block (13). Feed rails (19) are connected to both sides of the guide block (13). A feeding box slides above the feeding rails (19).

5. A side-blown lead-reverberatory furnace facilitating maintenance access according to claim 1, characterized in that, A protective cylinder (16) is connected to one side of the upper end of the feeding chamber (9). A hydraulic cylinder (17) is connected to the inner wall of the protective cylinder (16). The lower end of the hydraulic cylinder (17) extends through into the interior of the feeding chamber (9). A baffle (18) is connected to the output end of the hydraulic cylinder (17). The baffle (18) slides on one side of the inner wall of the feeding chamber (9). The shape of the baffle (18) is adapted to the shape of the feed inlet (12). The shape of the lower end of the baffle (18) is adapted to the shape of the upper end of the guide block (13).

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