Flue gas purification and capture device applied to the field of intermediate frequency furnace molten metal

Abstract

The utility model discloses be applied to the flue gas purification trapping device in the field of intermediate frequency furnace molten metal, including flue gas pipeline main part, flue gas pipeline main part one end is connected with elevating assembly, and flue gas pipeline main part is connected with rotating component, and rotating component is movably connected with fixed component. Be applied to the flue gas purification trapping device in the field of intermediate frequency furnace molten metal, through using suspension arm rotating mechanism + telescopic pipe type fume collecting hood, realizes dust collecting pipeline horizontal, longitudinal two -way adjustment, can realize stove surface fume collecting hood interactive switching use and flue gas effective collection, and equipment structure is simple, and easy operation is simple, and stable operation, and equipment failure rate is extremely low, and through incomplete statistics system equipment failure frequency is lower than once / half year, and equipment maintenance cost is reduced greatly.

Description

Technical Field

[0001] This utility model belongs to the technical field of flue gas collection equipment, and relates to a flue gas purification and collection device applied to the field of medium frequency furnace molten metal. Background Technology

[0002] Flue gas purification refers to the process of purifying flue gas containing pollutants generated during industrial production and combustion processes to reduce or remove harmful substances, ensuring that the flue gas meets environmental emission standards before being released into the atmosphere. This reduces pollutants in flue gas, protects ambient air quality and ecological balance, and minimizes harm to human health and buildings.

[0003] The original design of the molten metal flue gas from the intermediate frequency furnace in the workshop was a forced direct exhaust system, which is seriously inconsistent with current environmental protection requirements. At the same time, due to the compact layout of the equipment on the furnace surface and the overhead crane, the traditional direct-connection dust collection pipes are designed to run across the furnace surface. The pipe layout affects personnel passage and poses a hazard to personnel safety and evacuation. Furthermore, most of the existing flue gas absorption pipes are fixed and cannot extract the flue gas at close range, causing the flue gas to diffuse and making it impossible to efficiently purify the flue gas.

[0004] In summary, existing technologies suffer from the problem that fixed ducts cannot flexibly absorb flue gas and that the duct layout affects personnel passage. Utility Model Content

[0005] The purpose of this invention is to provide a flue gas purification and collection device for use in the field of molten metal in medium frequency furnaces, which solves the problems of existing technologies where fixed pipelines cannot flexibly absorb flue gas and the pipeline layout affects personnel passage.

[0006] The technical solution adopted by this utility model is a flue gas purification and capture device applied in the field of medium frequency furnace molten metal, including a flue gas pipeline body, a lifting component connected to one end of the flue gas pipeline body, a rotating component connected to the flue gas pipeline body, and a movably connected component to the fixed component.

[0007] The features of this utility model also include:

[0008] The main body of the flue gas duct includes a first riser, the axis of which is perpendicular to the ground. One end of the first riser is connected to the end of the second horizontal pipe. The axis of the second horizontal pipe is parallel to the ground. The end of the second horizontal pipe away from the first riser is connected to the third riser. The axis of the third riser is perpendicular to the ground.

[0009] A second disc is fitted on the outer wall of the first riser near the ground. Second protrusions are arranged opposite each other on the outer walls of the second disc. A fixing block is arranged opposite each other at the connection between the first riser and the second horizontal pipe. The fixing block and the second protrusion are connected to the outer wall of the flue gas duct body. The lifting assembly is movably connected to the flue gas duct body through the fixing block and the second disc.

[0010] The rotating assembly includes a support plate, which is disposed on the lower side of the second horizontal tube. A plurality of first support blocks are disposed on the upper side of the support plate, and the plurality of first support blocks are in contact with the outer wall of the second horizontal tube.

[0011] The second horizontal tube and the support plate are covered with a fixed frame, which is movably connected to the fixed rod. The structure of the fixed frame and the fixed rod is in a ring shape.

[0012] Warning signs are attached to the outer wall of the fixed frame.

[0013] A backing plate is provided at the bottom of the support plate. One end of the support plate is connected to one end of the backing plate, and the other end of the support plate and the other end of the backing plate are respectively connected to the two ends of the connecting column. The included angle between the backing plate and the support plate is an acute angle. The backing plate and the support plate are connected by several second support blocks.

[0014] Rotating columns are connected to both ends of the connecting column, and the rotating columns are rotatably connected to the position blocks; the position blocks are set opposite to each other; the position blocks are connected to the fixing components.

[0015] The fixing assembly includes a connecting plate arranged opposite to each other, which is connected to the position block respectively; positioning plates are vertically attached to both ends of the outer wall of the connecting plate away from the position block, and threaded rods are attached to both sides of the positioning plates respectively, with one end of the threaded rods connected to the connecting plate; several fixing bolts are provided on the surface of the positioning plate, and the fixing bolts are movably connected to the positioning plate; the connecting plate is fixed to the building through the cooperation of the positioning plate, threaded rods, and fixing bolts.

[0016] The rotating assembly also includes a first rotating block, which is connected to the outer wall of the top end of the third riser. The first rotating block is rotatably connected to a second rotating block, and the second rotating block is sleeved on the end of the fourth riser. The third riser and the fourth riser are movably connected through the cooperation of the first rotating block and the second rotating block.

[0017] The lifting assembly includes a connecting cover, which is movably connected to the lower end port of the first riser.

[0018] One end of the connecting cover is connected to the movable pipe, which is located inside the first riser. The movable pipe is covered with a first disc, which is located outside the lower end port of the first riser. The two outer walls of the first disc are respectively provided with first protrusions. An auxiliary rod is vertically connected to the side of the first protrusion away from the connecting cover, and the auxiliary rod is movably connected to the second protrusion.

[0019] A crossbar is installed at the end of the movable pipe away from the connecting cover. The two ends of the crossbar are connected to the inner wall of the movable pipe port. A hook is sleeved on the crossbar and connected to the side wall of the cylinder. The two ends of the cylinder are connected to pulleys through connecting blocks.

[0020] The pulley is movably connected to the outer wall of the rotating column via a steel rope; the rotating column is set inside the protective shell, and its two ends are respectively connected to a rotating motor and a reduction motor; the rotating motor and the reduction motor are respectively connected to a fixed block.

[0021] The beneficial effects of this utility model are as follows: By using a suspension arm rotating mechanism and a telescopic tube-type fume hood, the dust collection pipeline can be adjusted horizontally and vertically in both directions, enabling the interactive switching of the furnace surface fume hood and effective collection of flue gas; the equipment has a simple structure, is easy to operate, runs stably, and has an extremely low failure rate. According to incomplete statistics, the system equipment failure frequency is less than once per six months, significantly reducing equipment maintenance costs; it reduces the labor intensity of workers and saves manpower; all flue gas in the smelting process is effectively collected, significantly improving the working environment; the layout design of the furnace surface dust collection pipeline is optimized, eliminating the safety problem of head bumps due to excessively low pipelines and ensuring safe passage; by using a suspension arm as a supporting pipeline, the original L-shaped and S-shaped pipelines can be designed as U-shaped pipelines, reducing the wind resistance at pipeline bends, increasing the system negative pressure, and improving the flue gas collection and purification effect. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the flue gas purification and capture device of this utility model applied to the field of medium frequency furnace molten metal;

[0023] Figure 2 This is a schematic diagram of one side of the flue gas purification and capture device of this utility model applied to the field of medium frequency furnace molten metal;

[0024] Figure 3 This is a schematic diagram of the other side of the flue gas purification and capture device of this utility model applied to the field of medium frequency furnace molten metal;

[0025] Figure 4 This is a schematic diagram of the rotating component in the flue gas purification and capture device for molten metal in medium frequency furnaces, which is an application of this utility model.

[0026] Figure 5 This is a schematic diagram of the lifting component in the flue gas purification and capture device for molten metal in medium frequency furnaces, which is a product of this invention.

[0027] In the diagram, 1. Main body of flue gas duct; 2. Lifting assembly; 201. Movable duct; 202. First disc; 203. First protrusion; 204. Auxiliary rod; 205. Connecting cover; 206. Crossbar; 207. Hook; 208. Cylinder; 209. Connecting block; 210. Pulley; 211. Steel rope; 212. Rotating column; 213. Protective shell; 214. Rotating motor; 215. Gear reducer motor; 3. Fixing block; 4. Second disc; 5. Second protrusion; 6. Rotating assembly; 601. First rotating block; 602. Second rotating block; 603. First support block; 604. Support plate; 605. Second support block; 606. Abutment plate; 607. Connecting column; 608. Rotating column; 609. Positioning block; 7. Fixing rod; 8. Fixing frame; 9. Warning sign; 10. Connecting plate; 11. Positioning plate; 12. Threaded rod; 13. Fixing bolt. Detailed Implementation

[0028] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0029] Flue gas purification and capture devices used in the field of molten metal in medium-frequency furnaces, such as Figure 1 As shown, it includes a flue gas duct body 1, a lifting assembly 2 connected to one end of the flue gas duct body 1, a rotating assembly 6 connected to the flue gas duct body 1, and a movably connected rotating assembly 6 to a fixed assembly.

[0030] Combination Figure 2 and Figure 3 As shown, the main body 1 of the flue gas duct includes a first vertical pipe, the axis of which is perpendicular to the ground. One end of the first vertical pipe is connected to the end of a second horizontal pipe, the axis of which is parallel to the ground, and the end of the second horizontal pipe away from the first vertical pipe is connected to a third vertical pipe. The axis of the third vertical pipe is perpendicular to the ground. A second disc 4 is fitted on the outer wall of the end of the first vertical pipe near the ground. Second protrusions 5 are arranged opposite each other on the outer walls of the two sides of the second disc 4. A fixing block 3 is provided at the connection between the first vertical pipe and the second horizontal pipe. The fixing block 3 and the second protrusions 5 are connected to the outer wall of the main body 1 of the flue gas duct. The lifting assembly 2 is movably connected to the main body 1 of the flue gas duct through the fixing block 3 and the second disc 4.

[0031] Combination Figure 4 As shown, the rotating assembly 6 includes a support plate 604, which is disposed on the lower side of the second horizontal tube. A plurality of first support blocks 603 are disposed on the upper side of the support plate 604, and the plurality of first support blocks 603 are in contact with the outer wall of the second horizontal tube.

[0032] The second horizontal tube and the support plate 604 are covered by a fixing frame 8, which is movably connected to the fixing rod 7. The fixing frame 8 and the fixing rod 7 are structurally matched in a ring shape. A warning sign 9 is connected to the outer wall of the fixing frame 8.

[0033] A bottom plate 606 is provided at the bottom of the support plate 604. One end of the support plate 604 is connected to one end of the bottom plate 606, and the other end of the support plate 604 and the other end of the bottom plate 606 are respectively connected to both ends of the connecting column 607. The included angle between the bottom plate 606 and the support plate 604 is an acute angle, and the bottom plate 606 and the support plate 604 are connected by a number of second support blocks 605. Rotating columns 608 are respectively connected to both ends of the connecting column 607. The rotating columns 608 are rotatably connected to the position blocks 609. The position blocks 609 are arranged opposite to each other and are connected to the fixing components.

[0034] The fixing assembly includes a connecting plate 10 arranged opposite to each other, which is connected to the position block 609. Positioning plates 11 are vertically attached to both ends of the outer wall of the connecting plate 10 away from the position block 609. Threaded rods 12 are attached to both sides of the positioning plates 11, and one end of the threaded rods 12 is connected to the connecting plate 10. Several fixing bolts 13 are provided on the surface of the positioning plates 11, and the fixing bolts 13 are movably connected to the positioning plates 11. The connecting plate 10 is fixed to the building through the cooperation of the positioning plates 11, the threaded rods 12, and the fixing bolts 13.

[0035] The rotating assembly also includes a first rotating block 601, which is connected to the outer wall of the top end of the third riser. The first rotating block 601 is rotatably connected to a second rotating block 602, and the second rotating block 602 is sleeved on the end of the fourth riser. The third riser and the fourth riser are movably connected through the cooperation of the first rotating block 601 and the second rotating block 602.

[0036] Combination Figure 5 As shown, the lifting assembly includes a connecting cover 205, which is movably connected to the lower end port of the first riser. One end of the connecting cover 205 is connected to a movable pipe 201, which is located inside the first riser. A first disc 202 is fitted over the movable pipe 201, and the first disc 202 is located outside the lower end port of the first riser. First protrusions 203 are arranged opposite each other on the outer walls of the first disc 202. An auxiliary rod 204 is vertically connected to the side of the first protrusion 203 away from the connecting cover 205, and the auxiliary rod 204 is movably connected to a second protrusion 5. The movable pipe 201 is located away from the connecting cover 205. A crossbar 206 is provided at one end of the 5-way pipe. Both ends of the crossbar 206 are connected to the inner wall of the port of the movable pipe 201. A hook 207 is sleeved on the crossbar 206. The hook 207 is connected to the side wall of the cylinder 208. Both ends of the cylinder 208 are connected to the pulley 210 through the connecting block 209. The pulley 210 is movably connected to the outer wall of the rotating column 212 through the steel rope 211. The rotating column 212 is set inside the protective shell 213. Both ends of the rotating column 212 are connected to the rotating motor 214 and the reduction motor 215, respectively. The rotating motor 214 and the reduction motor 215 are connected to the fixed block 3, respectively.

[0037] This invention utilizes a rotating motor 214 to drive a rotating column 212, which in turn lowers a steel rope 211. This causes a pulley 210 to descend, lowering the connecting block 209 and the cylinder 208, which in turn lowers the hook 207 and the crossbar 206, thus lowering the movable pipe 201. A first disc 202 drives an auxiliary rod 204 to move inside the second protrusion 5 to prevent displacement. The bottom connecting cover 205 is then aligned with the smoke source to absorb the smoke. The process is reversed during ascent, effectively improving the absorption efficiency of the smoke source and preventing smoke diffusion due to excessive distance from the smoke extraction pipe, thus ensuring efficient smoke absorption. This design is more convenient, flexible, and practical.

[0038] This utility model uses a movable support plate 604 to move the first support block 603, the second horizontal pipe, the first vertical pipe, and the third vertical pipe. The first rotating block 601 at one end of the third vertical pipe rotates at the second rotating block 602 under the drive of the second horizontal pipe, thereby adjusting the position of the flue gas duct body 1. The movement of the support plate 604 causes the connecting column 607 to move on the rotating column 608 and rotate, effectively improving the flexibility and convenience of the flue gas duct body 1, enabling multi-angle adjustments and making it more convenient to use.

[0039] In addition, when processes such as adding iron are required, starting the motor will raise the connecting cover 205 to the highest point, which can meet the switching between production and process operations. The flue gas collection efficiency has been increased from 60% to over 98%. The operation is simple and stable, and it has high practicality.

[0040] Example 1

[0041] This embodiment proposes a flue gas purification and capture device for use in the field of molten metal in medium-frequency furnaces, such as... Figure 1 As shown, it includes a flue gas duct body 1, a lifting assembly 2 connected to one end of the flue gas duct body 1, a rotating assembly 6 connected to the flue gas duct body 1, and a movably connected rotating assembly 6 to a fixed assembly.

[0042] Example 2

[0043] This embodiment proposes a flue gas purification and capture device for use in the field of molten metal in medium-frequency furnaces, such as... Figure 1 As shown, it includes a flue gas duct body 1, a lifting assembly 2 connected to one end of the flue gas duct body 1, a rotating assembly 6 connected to the flue gas duct body 1, and a movably connected rotating assembly 6 to a fixed assembly.

[0044] Combination Figure 2 and Figure 3As shown, the main body 1 of the flue gas duct includes a first vertical pipe, the axis of which is perpendicular to the ground. One end of the first vertical pipe is connected to the end of a second horizontal pipe, the axis of which is parallel to the ground, and the end of the second horizontal pipe away from the first vertical pipe is connected to a third vertical pipe. The axis of the third vertical pipe is perpendicular to the ground. A second disc 4 is fitted on the outer wall of the end of the first vertical pipe near the ground. Second protrusions 5 are arranged opposite each other on the outer walls of the two sides of the second disc 4. A fixing block 3 is provided at the connection between the first vertical pipe and the second horizontal pipe. The fixing block 3 and the second protrusions 5 are connected to the outer wall of the main body 1 of the flue gas duct. The lifting assembly 2 is movably connected to the main body 1 of the flue gas duct through the fixing block 3 and the second disc 4.

[0045] Example 3

[0046] This embodiment proposes a flue gas purification and capture device for use in the field of molten metal in medium-frequency furnaces, such as... Figure 1 As shown, it includes a flue gas duct body 1, a lifting assembly 2 connected to one end of the flue gas duct body 1, a rotating assembly 6 connected to the flue gas duct body 1, and a movably connected rotating assembly 6 to a fixed assembly.

[0047] Combination Figure 2 and Figure 3 As shown, the main body 1 of the flue gas duct includes a first vertical pipe, the axis of which is perpendicular to the ground. One end of the first vertical pipe is connected to the end of a second horizontal pipe, the axis of which is parallel to the ground, and the end of the second horizontal pipe away from the first vertical pipe is connected to a third vertical pipe. The axis of the third vertical pipe is perpendicular to the ground. A second disc 4 is fitted on the outer wall of the end of the first vertical pipe near the ground. Second protrusions 5 are arranged opposite each other on the outer walls of the two sides of the second disc 4. A fixing block 3 is provided at the connection between the first vertical pipe and the second horizontal pipe. The fixing block 3 and the second protrusions 5 are connected to the outer wall of the main body 1 of the flue gas duct. The lifting assembly 2 is movably connected to the main body 1 of the flue gas duct through the fixing block 3 and the second disc 4.

[0048] Combination Figure 4 As shown, the rotating assembly 6 includes a support plate 604, which is disposed on the lower side of the second horizontal tube. Three first support blocks 603 are disposed on the upper side of the support plate 604, and the first support blocks 603 are in contact with the outer wall of the second horizontal tube. A fixing frame 8 is fitted over the second horizontal tube and the support plate 604. The fixing frame 8 is movably connected to the fixing rod 7, and the fixing frame 8 and the fixing rod 7 are structurally matched in a ring shape. A warning sign 9 is connected to the outer wall of the fixing frame 8.

[0049] Example 4

[0050] This embodiment proposes a flue gas purification and capture device for use in the field of molten metal in medium-frequency furnaces, such as... Figure 1 As shown, it includes a flue gas duct body 1, a lifting assembly 2 connected to one end of the flue gas duct body 1, a rotating assembly 6 connected to the flue gas duct body 1, and a movably connected rotating assembly 6 to a fixed assembly.

[0051] Combination Figure 2 and Figure 3 As shown, the main body 1 of the flue gas duct includes a first vertical pipe, the axis of which is perpendicular to the ground. One end of the first vertical pipe is connected to the end of a second horizontal pipe, the axis of which is parallel to the ground, and the end of the second horizontal pipe away from the first vertical pipe is connected to a third vertical pipe. The axis of the third vertical pipe is perpendicular to the ground. A second disc 4 is fitted on the outer wall of the end of the first vertical pipe near the ground. Second protrusions 5 are arranged opposite each other on the outer walls of the two sides of the second disc 4. A fixing block 3 is provided at the connection between the first vertical pipe and the second horizontal pipe. The fixing block 3 and the second protrusions 5 are connected to the outer wall of the main body 1 of the flue gas duct. The lifting assembly 2 is movably connected to the main body 1 of the flue gas duct through the fixing block 3 and the second disc 4.

[0052] Combination Figure 4 As shown, the rotating assembly 6 includes a support plate 604, which is disposed on the lower side of the second horizontal tube. Three first support blocks 603 are disposed on the upper side of the support plate 604, and the first support blocks 603 are in contact with the outer wall of the second horizontal tube. A fixing frame 8 is fitted over the second horizontal tube and the support plate 604, and the fixing frame 8 is movably connected to a fixing rod 7. The fixing frame 8 and the fixing rod 7 are structurally aligned in a ring shape. A warning sign 9 is attached to the outer wall of the fixing frame 8. A stop plate 606 is disposed at the bottom of the support plate 604. One end of the support plate 604 is connected to one end of the stop plate 606, and the other end of the support plate 604 and the other end of the stop plate 606 are respectively connected to both ends of a connecting column 607. The included angle between the stop plate 606 and the support plate 604 is an acute angle, and the stop plate 606 and the support plate 604 are connected by two second support blocks 605. The two ends of the connecting column 607 are respectively connected to the rotating column 608, and the rotating column 608 is rotatably connected to the position block 609; the position block 609 is arranged opposite to each other; the position block 609 is connected to the fixing component.

[0053] Example 5

[0054] This embodiment proposes a flue gas purification and capture device for use in the field of molten metal in medium-frequency furnaces, such as... Figure 1 As shown, it includes a flue gas duct body 1, a lifting assembly 2 connected to one end of the flue gas duct body 1, a rotating assembly 6 connected to the flue gas duct body 1, and a movably connected rotating assembly 6 to a fixed assembly.

[0055] Combination Figure 2 and Figure 3As shown, the main body 1 of the flue gas duct includes a first vertical pipe, the axis of which is perpendicular to the ground. One end of the first vertical pipe is connected to the end of a second horizontal pipe, the axis of which is parallel to the ground, and the end of the second horizontal pipe away from the first vertical pipe is connected to a third vertical pipe. The axis of the third vertical pipe is perpendicular to the ground. A second disc 4 is fitted on the outer wall of the end of the first vertical pipe near the ground. Second protrusions 5 are arranged opposite each other on the outer walls of the two sides of the second disc 4. A fixing block 3 is provided at the connection between the first vertical pipe and the second horizontal pipe. The fixing block 3 and the second protrusions 5 are connected to the outer wall of the main body 1 of the flue gas duct. The lifting assembly 2 is movably connected to the main body 1 of the flue gas duct through the fixing block 3 and the second disc 4.

[0056] Combination Figure 4 As shown, the rotating assembly 6 includes a support plate 604, which is disposed on the lower side of the second horizontal tube. Three first support blocks 603 are disposed on the upper side of the support plate 604, and the first support blocks 603 are in contact with the outer wall of the second horizontal tube. A fixing frame 8 is fitted over the second horizontal tube and the support plate 604, and the fixing frame 8 is movably connected to a fixing rod 7. The fixing frame 8 and the fixing rod 7 are structurally aligned in a ring shape. A warning sign 9 is attached to the outer wall of the fixing frame 8. A stop plate 606 is disposed at the bottom of the support plate 604. One end of the support plate 604 is connected to one end of the stop plate 606, and the other end of the support plate 604 and the other end of the stop plate 606 are respectively connected to both ends of a connecting column 607. The included angle between the stop plate 606 and the support plate 604 is an acute angle, and the stop plate 606 and the support plate 604 are connected by two second support blocks 605. The two ends of the connecting column 607 are respectively connected to the rotating column 608, and the rotating column 608 is rotatably connected to the position block 609; the position block 609 is arranged opposite to each other; the position block 609 is connected to the fixing component.

[0057] The fixing assembly includes a connecting plate 10 arranged opposite to each other, which is connected to the position block 609. Positioning plates 11 are vertically attached to both ends of the outer wall of the connecting plate 10 away from the position block 609. Threaded rods 12 are attached to both sides of the positioning plates 11, and one end of the threaded rods 12 is connected to the connecting plate 10. Two fixing bolts 13 are provided on the surface of the positioning plates 11, and the fixing bolts 13 are movably connected to the positioning plates 11. The connecting plate 10 is fixed to the building through the cooperation of the positioning plates 11, the threaded rods 12, and the fixing bolts 13.

[0058] The rotating assembly also includes a first rotating block 601, which is connected to the outer wall of the top end of the third riser. The first rotating block 601 is rotatably connected to a second rotating block 602, and the second rotating block 602 is sleeved on the end of the fourth riser. The third riser and the fourth riser are movably connected through the cooperation of the first rotating block 601 and the second rotating block 602.

[0059] Example 6

[0060] This embodiment proposes a flue gas purification and capture device for use in the field of molten metal in medium-frequency furnaces, such as... Figure 1 As shown, it includes a flue gas duct body 1, a lifting assembly 2 connected to one end of the flue gas duct body 1, a rotating assembly 6 connected to the flue gas duct body 1, and a movably connected rotating assembly 6 to a fixed assembly.

[0061] Combination Figure 2 and Figure 3 As shown, the main body 1 of the flue gas duct includes a first vertical pipe, the axis of which is perpendicular to the ground. One end of the first vertical pipe is connected to the end of a second horizontal pipe, the axis of which is parallel to the ground, and the end of the second horizontal pipe away from the first vertical pipe is connected to a third vertical pipe. The axis of the third vertical pipe is perpendicular to the ground. A second disc 4 is fitted on the outer wall of the end of the first vertical pipe near the ground. Second protrusions 5 are arranged opposite each other on the outer walls of the two sides of the second disc 4. A fixing block 3 is provided at the connection between the first vertical pipe and the second horizontal pipe. The fixing block 3 and the second protrusions 5 are connected to the outer wall of the main body 1 of the flue gas duct. The lifting assembly 2 is movably connected to the main body 1 of the flue gas duct through the fixing block 3 and the second disc 4.

[0062] Combination Figure 4 As shown, the rotating assembly 6 includes a support plate 604, which is disposed on the lower side of the second horizontal tube. Three first support blocks 603 are disposed on the upper side of the support plate 604, and the first support blocks 603 are in contact with the outer wall of the second horizontal tube. A fixing frame 8 is fitted over the second horizontal tube and the support plate 604. The fixing frame 8 is movably connected to the fixing rod 7, and the fixing frame 8 and the fixing rod 7 are structurally matched in a ring shape. A warning sign 9 is connected to the outer wall of the fixing frame 8.

[0063] A bottom plate 606 is provided at the bottom of the support plate 604. One end of the support plate 604 is connected to one end of the bottom plate 606, and the other end of the support plate 604 and the other end of the bottom plate 606 are respectively connected to both ends of the connecting column 607. The included angle between the bottom plate 606 and the support plate 604 is an acute angle. The bottom plate 606 and the support plate 604 are connected by two second support blocks 605. Rotating columns 608 are respectively connected to both ends of the connecting column 607. The rotating columns 608 are rotatably connected to the position blocks 609. The position blocks 609 are arranged opposite to each other and are connected to the fixing components.

[0064] The fixing assembly includes a connecting plate 10 arranged opposite to each other, which is connected to the position block 609. Positioning plates 11 are vertically attached to both ends of the outer wall of the connecting plate 10 away from the position block 609. Threaded rods 12 are attached to both sides of the positioning plates 11, and one end of the threaded rods 12 is connected to the connecting plate 10. Two fixing bolts 13 are provided on the surface of the positioning plates 11, and the fixing bolts 13 are movably connected to the positioning plates 11. The connecting plate 10 is fixed to the building through the cooperation of the positioning plates 11, the threaded rods 12, and the fixing bolts 13.

[0065] The rotating assembly also includes a first rotating block 601, which is connected to the outer wall of the top end of the third riser. The first rotating block 601 is rotatably connected to a second rotating block 602, and the second rotating block 602 is sleeved on the end of the fourth riser. The third riser and the fourth riser are movably connected through the cooperation of the first rotating block 601 and the second rotating block 602.

[0066] Combination Figure 5 As shown, the lifting assembly includes a connecting cover 205, which is movably connected to the lower end port of the first riser. One end of the connecting cover 205 is connected to a movable pipe 201, which is located inside the first riser. A first disc 202 is fitted over the movable pipe 201, and the first disc 202 is located outside the lower end port of the first riser. First protrusions 203 are arranged opposite each other on the outer walls of the first disc 202. An auxiliary rod 204 is vertically connected to the side of the first protrusion 203 away from the connecting cover 205, and the auxiliary rod 204 is movably connected to a second protrusion 5. The movable pipe 201 is located away from the connecting cover 205. A crossbar 206 is provided at one end of the 5-way pipe. Both ends of the crossbar 206 are connected to the inner wall of the port of the movable pipe 201. A hook 207 is sleeved on the crossbar 206. The hook 207 is connected to the side wall of the cylinder 208. Both ends of the cylinder 208 are connected to the pulley 210 through the connecting block 209. The pulley 210 is movably connected to the outer wall of the rotating column 212 through the steel rope 211. The rotating column 212 is set inside the protective shell 213. Both ends of the rotating column 212 are connected to the rotating motor 214 and the reduction motor 215, respectively. The rotating motor 214 and the reduction motor 215 are connected to the fixed block 3, respectively.

[0067] This invention, through a combination of a suspended arm and a telescopic fume hood, solves problems such as difficult furnace surface pipe layout, high wind resistance in L-shaped and S-shaped pipes, and poor dust collection efficiency of existing fixed dust collection hoods. It achieves a one-to-two flue gas collection method, meeting the dual-use and dual-standby requirements of medium-frequency furnaces. After effective flue gas capture, combined with existing flue gas purification devices, it can achieve a low emission target of less than 5mg of dust. Furthermore, this invention can also be applied to processes such as anode casting, solving the problem of difficult flue gas collection when the carbon blocks and casting carriage are in motion during the casting process.

Claims

1. A flue gas purification and collection device applied in the field of medium-frequency furnace molten metal, characterized in that, It includes a flue gas duct body (1), one end of which is connected to a lifting component (2), the flue gas duct body (1) is connected to a rotating component (6), and the rotating component (6) is movably connected to a fixed component.

2. The flue gas purification and collection device for use in medium-frequency furnace molten metal as described in claim 1, characterized in that, The main body of the flue gas duct (1) includes a first riser, the axis of which is perpendicular to the ground, one end of which is connected to the end of a second horizontal pipe, the axis of which is parallel to the ground, and the end of which is away from the first riser is connected to a third riser, the axis of which is perpendicular to the ground.

3. The flue gas purification and collection device applied to the field of medium-frequency furnace molten metal as described in claim 2, characterized in that, A second disc (4) is fitted on the outer wall of the first riser near the ground. Second protrusions (5) are arranged opposite each other on the outer walls of the second disc (4). A fixing block (3) is arranged opposite each other at the connection between the first riser and the second horizontal pipe. The fixing block (3) and the second protrusion (5) are connected to the outer wall of the flue gas duct body (1). The lifting assembly (2) is movably connected to the flue gas duct body (1) through the fixing block (3) and the second disc (4).

4. The flue gas purification and collection device for use in medium-frequency furnace molten metal as described in claim 3, characterized in that, The rotating assembly (6) includes a support plate (604), which is disposed on the lower side of the second horizontal tube. A plurality of first support blocks (603) are disposed on the upper side of the support plate (604), and the plurality of first support blocks (603) are in contact with the outer wall of the second horizontal tube.

5. The flue gas purification and collection device for use in medium-frequency furnace molten metal as described in claim 4, characterized in that, The second horizontal tube and the support plate (604) are covered with a fixing frame (8), which is movably connected to the fixing rod (7). The fixing frame (8) and the fixing rod (7) are structurally matched in a ring shape. A warning sign (9) is attached to the outer wall of the fixed frame (8).

6. The flue gas purification and collection device for use in medium-frequency furnace molten metal as described in claim 5, characterized in that, The bottom of the support plate (604) is provided with a stop plate (606). One end of the support plate (604) is connected to one end of the stop plate (606), and the other end of the support plate (604) and the other end of the stop plate (606) are respectively connected to both ends of the connecting column (607). The included angle between the stop plate (606) and the support plate (604) is an acute angle. The stop plate (606) and the support plate (604) are connected by a number of second support blocks (605).

7. The flue gas purification and collection device for use in medium-frequency furnace molten metal as described in claim 6, characterized in that, The connecting column (607) has a rotating column (608) connected to each end. The rotating column (608) is rotatably connected to the position block (609). The position block (609) is arranged opposite to each other. The position block (609) is connected to the fixing component.

8. The flue gas purification and collection device for use in medium-frequency furnace molten metal as described in claim 7, characterized in that, The fixing assembly includes a connecting plate (10) arranged opposite to each other, the connecting plate (10) being connected to the position block (609) respectively; positioning plates (11) are vertically attached to both ends of the outer wall of the connecting plate (10) away from the position block (609), and threaded rods (12) are respectively attached to both sides of the positioning plate (11), one end of the threaded rod (12) being connected to the connecting plate (10); a plurality of fixing bolts (13) are provided on the plate surface of the positioning plate (11), and the fixing bolts (13) are movably connected to the positioning plate (11); the connecting plate (10) is fixed to the building by the cooperation of the positioning plate (11), the threaded rod (12), and the fixing bolts (13).

9. The flue gas purification and collection device for use in medium-frequency furnace molten metal as described in claim 8, characterized in that, The rotating assembly further includes a first rotating block (601), which is connected to the outer wall of the top end of the third riser. The first rotating block (601) is rotatably connected to a second rotating block (602), and the second rotating block (602) is sleeved on the end of the fourth riser. The third riser and the fourth riser are movably connected through the cooperation of the first rotating block (601) and the second rotating block (602).

10. The flue gas purification and collection device for use in medium-frequency furnace molten metal as described in claim 9, characterized in that, The lifting assembly includes a connecting cover (205), which is movably connected to the lower end port of the first riser. One end of the connecting cover (205) is connected to the movable pipe (201), which is located inside the first riser. The movable pipe (201) is covered by a first disc (202), which is located outside the lower end port of the first riser. The outer walls of the first disc (202) are provided with first protrusions (203) on both sides. An auxiliary rod (204) is vertically connected to the side of the first protrusion (203) away from the connecting cover (205). The auxiliary rod (204) is movably connected to the second protrusion (5). A crossbar (206) is provided at the end of the movable pipe (201) away from the connecting cover (205). The two ends of the crossbar (206) are respectively connected to the inner wall of the port of the movable pipe (201). A hook (207) is sleeved on the crossbar (206). The hook (207) is connected to the side wall of the cylinder (208). The two ends of the cylinder (208) are respectively connected to the pulley (210) through the connecting block (209). The pulley (210) is movably connected to the outer wall of the rotating column (212) via a steel rope (211); the rotating column (212) is set inside the protective shell (213), and the two ends of the rotating column (212) are respectively connected to the rotating motor (214) and the reduction motor (215); the rotating motor (214) and the reduction motor (215) are respectively connected to the fixed block (3).

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