A lead mist dust collection device for oxygen-enriched smelting furnaces

Abstract

This utility model discloses a lead mist dust collection device for an oxygen-enriched smelting furnace, relating to the technical field of collection devices. It includes a ventilation duct with a limiting ring fixedly installed on it. Two gas collecting hoods are provided on the circumferential surface of the ventilation duct, and a filter adsorption assembly is provided between the two gas collecting hoods. Two sets of fixing mechanisms are provided at the upper ends of the two gas collecting hoods. The two gas collecting hoods are engaged with the limiting ring at the lower end of the ventilation duct. Each fixing mechanism includes a first fixing block and a second fixing block. In this invention, when maintenance is required, the user presses the connecting rod, which simultaneously moves the pressing plates of the two sets of fixing mechanisms downwards, releasing the wedge block from the pressing plate, thereby quickly separating the two gas collecting hoods. This facilitates cleaning or replacement of the filter adsorption assembly inside the gas collecting hoods. The operation is simple and efficient, greatly saving maintenance time and labor costs, and improving the efficiency of equipment use.

Description

Technical Field

[0001] This utility model relates to the field of collection device technology, and in particular to a lead mist dust collection device for an oxygen-enriched smelting furnace. Background Technology

[0002] An oxygen-enriched smelting furnace is a smelting device that uses industrial oxygen to partially or completely replace air to enhance the metallurgical process. Its working principle is as follows: for sulfide ore smelting, the main reaction is the oxidation of sulfides, with oxides in the slag acting as a transfer agent for oxygen in the gas phase. Oxygen-enriched blast increases the oxygen partial pressure inside the furnace, accelerates oxygen diffusion, and consequently increases the oxidation rate of sulfides. For the reduction smelting of oxide or oxidized ores, solid carbonaceous fuels are used as both exothermic and reducing agents. Oxygen-enriched blast increases the theoretical maximum combustion temperature of the fuel with increasing oxygen content, accelerates the combustion rate, increases the partial pressure of carbon monoxide in the gas phase and the furnace temperature, thus accelerating the reduction reaction and the melting of the furnace charge.

[0003] Existing dust collection devices suffer from maintenance deficiencies. Their complex structural design and difficult component disassembly make cleaning or replacement of filter components cumbersome, consuming significant time and labor costs, and severely impacting production efficiency. These problems urgently need to be addressed to improve the effectiveness of lead mist dust collection in oxygen-enriched smelting furnaces and enhance the practicality of the equipment. Utility Model Content

[0004] Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a lead mist dust collection device for oxygen-enriched smelting furnaces. It solves the technical problems of existing collection devices in terms of maintenance, complex structural design, difficult disassembly of parts, cumbersome operation when the filter components need to be cleaned or replaced, which consumes a lot of time and labor costs and seriously affects production efficiency.

[0006] Technical solution

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

[0008] A lead mist dust collection device for an oxygen-enriched smelting furnace includes a ventilation duct with a limiting ring fixedly installed on it. Two gas collecting hoods are provided on the circumferential surface of the ventilation duct, and a filter adsorption assembly is provided between the two gas collecting hoods. Two sets of fixing mechanisms are provided at the upper ends of the two gas collecting hoods, and the two gas collecting hoods are engaged with the limiting ring at the lower end of the ventilation duct. Each fixing mechanism includes a first fixing block and a second fixing block. A wedge-shaped block is fixedly installed on the second fixing block, and a slot is formed in the wedge-shaped block. The second fixing block is fixedly installed on the gas collecting hood located on the left side. A sliding hole is formed on the first fixing block, and the first fixing block is fixedly installed on the gas collecting hood located on the right side.

[0009] Preferably, the first fixing block has a vertical hole, the sliding hole and the vertical hole of the first fixing block are intersecting and communicating, a pressing plate is slidably installed in the vertical hole of the first fixing block, the pressing plate has a rectangular hole, and a return spring is fixedly installed at the lower end of the pressing plate.

[0010] Preferably, the reset spring is fixedly installed between the inner wall of the vertical hole opened in the pressing plate and the first fixing block, the wedge block is slidably installed in the sliding hole opened in the first fixing block, the wedge block is engaged in the rectangular hole opened in the pressing plate through the opened slot, and a connecting rod is fixedly installed between the pressing plates in the two sets of fixing mechanisms.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] In this new type of device, a fixing mechanism is provided, including a first fixing block, a second fixing block, a wedge block, a pressing plate, a return spring, and a connecting rod. When maintenance is required, the user can press the connecting rod to simultaneously move the pressing plates of the two fixing mechanisms downward, releasing the wedge block from the pressing plate and quickly separating the two gas collection hoods. This facilitates cleaning or replacement of the filter adsorption components inside the gas collection hoods. The operation is simple and efficient, greatly saving maintenance time and labor costs and improving the efficiency of the equipment.

[0013] In this new type of gas collection hood, a negative pressure is generated by a fan on the ventilation duct. Combined with the reasonable design of the hood, the lead mist dust generated by the oxygen-enriched smelting furnace can be quickly drawn in. Furthermore, the filter and adsorption components between the two hoods can perform multi-level filtration and adsorption of the lead mist dust, from intercepting large particles of lead dust to adsorbing lead mist, and then to finely filtering tiny particles. This achieves efficient capture of lead mist dust, effectively purifies dust-laden gas, and reduces the harm of lead pollution to the environment and human health. Attached Figure Description

[0014] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0015] Figure 1 This is a structural diagram of the entire utility model;

[0016] Figure 2 This is a structural diagram of the gas collection hood of this utility model;

[0017] Figure 3 This is a structural diagram of the ventilation duct of this utility model;

[0018] Figure 4 This utility model Figure 2Enlarged view of the structure at point A;

[0019] Figure 5 This utility model Figure 3 Enlarged view of the structure at point B.

[0020] Legend: 11. First fixing block; 12. Pressing plate; 13. Rectangular hole; 14. Sliding hole; 15. Vertical hole; 16. Return spring; 17. Connecting rod; 21. Second fixing block; 22. Wedge block; 23. Slot; 24. Gas collection hood; 25. Filter adsorption assembly; 26. Ventilation duct; 27. Limiting ring. Detailed Implementation

[0021] This application provides a lead mist dust collection device for oxygen-enriched smelting furnaces, which effectively solves the technical problems of existing collection devices in terms of maintenance, complex structural design, difficult disassembly of parts, cumbersome operation when the filter components need to be cleaned or replaced, which consumes a lot of time and labor costs and seriously affects production efficiency.

[0022] Example

[0023] like Figures 1-5 As shown, the technical solution in this application aims to effectively address the shortcomings of existing collection devices in terms of maintenance. These devices suffer from complex structural designs, difficult component disassembly, and cumbersome operations that consume significant time and labor costs when cleaning or replacing the filter components, severely impacting production efficiency. The overall approach is as follows:

[0024] To address the problems existing in the prior art, this utility model provides a lead mist dust collection device for an oxygen-enriched smelting furnace, including a ventilation duct 26. A limiting ring 27 is fixedly installed on the ventilation duct 26, which provides precise installation positioning for two gas collecting hoods 24, ensuring that the gas collecting hoods 24 can be stably installed at the lower end of the ventilation duct 26, preventing shaking or displacement during use, and ensuring the stability of the overall structure of the collection device. Two gas collecting hoods 24 are provided on the circumferential surface of the ventilation duct 26. The gas collecting hoods 24 adopt a special streamlined design, and their opening shape and angle have been carefully optimized to maximize the coverage of the area where lead mist dust is generated in the oxygen-enriched smelting furnace. When the fan on the ventilation duct 26 is started, a negative pressure is formed. At the same time, the gas collection hood 24 can efficiently guide lead mist dust into its interior with the airflow, greatly improving the collection efficiency of lead mist dust. A filter adsorption assembly 25 is provided between the two gas collection hoods 24. This assembly is composed of multiple layers of different materials. The outermost layer is a coarse filter screen, which can intercept larger particles of lead dust and prevent them from entering the subsequent processing stage and causing blockage. The middle layer is an activated carbon adsorption layer. Activated carbon has a rich pore structure and has a strong adsorption capacity for lead mist, which can effectively adsorb lead mist and reduce the lead content in the gas. The innermost layer is a fine filter screen, which further filters out small particles to ensure that the gas after preliminary purification meets the intake requirements of the subsequent processing equipment. This achieves multi-stage filtration and adsorption of lead mist dust, significantly improving the purification effect.

[0025] The upper ends of the two gas collection hoods 24 are provided with two sets of fixing mechanisms, including a first fixing block 11 and a second fixing block 21. A wedge block 22 is fixedly installed on the second fixing block 21. The unique wedge structure of the wedge block 22 gives it good guidance and stability during installation and disassembly. The slot 23 opened on the wedge block 22 cooperates with the rectangular hole 13 on the pressing plate 12. After installation, it can be tightly locked to prevent relative displacement between the two gas collection hoods 24, ensure the sealing of the collection device during operation, and avoid lead mist leakage.

[0026] The second fixing block 21 is fixedly installed on the gas collecting hood 24 located on the left side, and the first fixing block 11 is fixedly installed on the gas collecting hood 24 located on the right side. The first fixing block 11 has a sliding hole 14 and a vertical hole 15, which are intersecting and communicating with each other. A pressing plate 12 is slidably installed in the vertical hole 15. The rectangular hole 13 on the pressing plate 12 cooperates with the slot 23 of the wedge block 22. When it is necessary to disassemble the gas collecting hood 24, press the pressing plate 12 to make it slide downward in the vertical hole 15, so as to release the wedge block 22 from the rectangular hole 13. In the connected state, the operation is simple and convenient. A return spring 16 is fixedly installed at the lower end of the pressing plate 12. The return spring 16 is fixedly installed between the pressing plate 12 and the inner wall of the vertical hole 15 opened in the first fixing block 11. During normal use, the return spring 16 is in a naturally extended state, providing upward support for the pressing plate 12, ensuring that the wedge block 22 is always tightly engaged in the rectangular hole 13, and ensuring the stability of the connection of the gas collection hood 24. After the disassembly operation is completed, the pressing plate 12 is released, and the return spring 16 will push the pressing plate 12 to reset, which is convenient for the next use.

[0027] The wedge block 22 is slidably installed in the sliding hole 14 opened in the first fixing block 11. This sliding connection method not only ensures the smooth movement of the wedge block 22 during installation and disassembly, but also provides it with a stable track to prevent the wedge block 22 from deviating during movement. A connecting rod 17 is fixedly installed between the pressing plates 12 in the two sets of fixing mechanisms. The setting of the connecting rod 17 allows the user to operate the two sets of fixing mechanisms at the same time by pressing the connecting rod 17, so as to realize the synchronous disassembly of the two gas collection hoods 24, which greatly improves the disassembly efficiency and saves maintenance time and labor costs.

[0028] Working principle:

[0029] Lead mist dust collection process: When the equipment is running, the fan on the ventilation duct 26 starts, generating negative pressure. Under the action of negative pressure, the lead mist dust generated by the oxygen-enriched smelting furnace enters the two gas collection hoods 24 with the airflow. The filter adsorption component 25 set between the two gas collection hoods 24 begins to function, filtering and adsorbing the incoming lead mist dust, and initially purifying the gas. Subsequently, the dust-laden gas that has undergone preliminary treatment is transported to the subsequent processing equipment through the ventilation duct 26 for further processing, thereby achieving effective collection of lead mist dust.

[0030] Equipment maintenance process: During the lead mist dust collection process, the lead mist dust is easily affected by factors such as temperature changes, humidity or static electricity when it flows in the pipeline, which may cause agglomeration and deposition. Over time, this may lead to pipeline blockage and affect the normal operation of the equipment. Therefore, it is necessary to clean or replace the gas collection hood 24 and its internal filter adsorption components 25 regularly.

[0031] When maintenance is required, the user first presses the connecting rod 17. Since the connecting rod 17 is fixedly installed between the pressing plates 12 in the two sets of fixing mechanisms, pressing the connecting rod 17 will drive the two pressing plates 12 to move downward synchronously. As the pressing plates 12 move downward, the rectangular hole 13 opened on the pressing plate 12 will gradually move to the position where it is separated from the wedge block 22.

[0032] At this point, the wedge block 22 is no longer locked in the rectangular hole 13, and the user can move the second fixing block 21 to one side. Since the wedge block 22 is fixedly installed on the second fixing block 21, and the wedge block 22 was originally slidably installed in the sliding hole 14 opened in the first fixing block 11, when the second fixing block 21 is moved, the second fixing block 21 and the wedge block 22 can be smoothly moved out of the sliding hole 14 of the first fixing block 11. In this way, the connection between the two gas collection hoods 24 is released, realizing quick disassembly. The filter adsorption component 25 inside the disassembled gas collection hood 24 can also be easily disassembled for cleaning, replacement and other maintenance operations. The whole process is simple to operate and greatly improves the efficiency of equipment maintenance.

[0033] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A lead mist dust collection device for an oxygen-enriched smelting furnace, comprising a ventilation duct (26), characterized in that: A limiting ring (27) is fixedly installed on the ventilation duct (26). Two air collection hoods (24) are provided on the circumferential surface of the ventilation duct (26). A filter adsorption assembly (25) is provided between the two air collection hoods (24). Two sets of fixing mechanisms are provided at the upper ends of the two air collection hoods (24). The two air collection hoods (24) are snapped onto the limiting ring (27) at the lower end of the ventilation duct (26). The fixing mechanism includes a first fixing block (11) and a second fixing block (21). A wedge block (22) is fixedly installed on the second fixing block (21). A slot (23) is opened on the wedge block (22). The second fixing block (21) is fixedly installed on the gas collection hood (24) located on the left side. A sliding hole (14) is opened on the first fixing block (11). The first fixing block (11) is fixedly installed on the gas collection hood (24) located on the right side.

2. The lead mist dust collection device for an oxygen-enriched smelting furnace according to claim 1, characterized in that: The first fixing block (11) has a vertical hole (15).

3. The lead mist dust collection device for an oxygen-enriched smelting furnace according to claim 2, characterized in that: The sliding hole (14) and the vertical hole (15) of the first fixing block (11) are intersecting.

4. The lead mist dust collection device for an oxygen-enriched smelting furnace according to claim 3, characterized in that: A pressing plate (12) is slidably installed in the vertical hole (15) of the first fixing block (11); The pressing plate (12) has a rectangular hole (13).

5. The lead mist dust collection device for an oxygen-enriched smelting furnace according to claim 4, characterized in that: A reset spring (16) is fixedly installed at the lower end of the pressing plate (12); The reset spring (16) is fixedly installed between the inner wall of the vertical hole (15) opened in the pressing plate (12) and the first fixing block (11).

6. The lead mist dust collection device for an oxygen-enriched smelting furnace according to claim 5, characterized in that: The wedge block (22) is slidably installed in the sliding hole (14) of the first fixing block (11).

7. The lead mist dust collection device for an oxygen-enriched smelting furnace according to claim 6, characterized in that: The wedge block (22) is engaged in the rectangular hole (13) of the pressing plate (12) through the slot (23).

8. The lead mist dust collection device for an oxygen-enriched smelting furnace according to claim 7, characterized in that: A connecting rod (17) is fixedly installed between the pressing plates (12) in the two sets of fixing mechanisms.

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