Smoke absorbing and sealing device in refining and smelting area

Abstract

The utility model discloses a smoke absorbing and sealing device in a refining and smelting area, which comprises a sealing box and a bottom sealing platform, the bottom of the sealing box is of an opening structure, the bottom sealing platform is fixed at the opening of the bottom end of the sealing box, and a mechanism formed by the sealing box and the bottom sealing platform seals the smelting area of a refining furnace. The smelting area of the refining furnace is completely sealed through the combination of the sealing box and the bottom sealing platform, smoke dust can be easily sucked into the dust removal pipe and then output from the dust removal header pipe after smoke is sucked into the sealed area, meanwhile, the feeding pipe is also arranged in the sealed smelting area, dust generated during feeding can be sucked into the sealed smelting area and is prevented from drifting away in a work site, and the production efficiency is improved. And the smelting auxiliary mechanism is installed in the closed area and is matched with the installation structure of the sealing box and the bottom sealing platform, the smelting effect is guaranteed, meanwhile, smoke is fully recycled, smoke overflow is reduced, and in addition, a movable sliding door and an overhaul cover plate are arranged, so that follow-up maintenance and replacement are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of metal smelting smoke treatment, in particular to a smoke absorption and sealing device in a refining and smelting area. Background Art

[0002] Refining furnace smelting accelerates the fusion reaction of alloy and solvent with molten steel by energizing the electrodes. A large amount of smoke and dust will be generated in the process of the reaction. The temperature is high and the pressure is strong near the molten steel, which causes the smoke and dust to escape upward and around the ladle mouth. Although there is a furnace cover and smoke hood covering the ladle during the refining and smelting process, the strong air pressure generated by the high temperature of the molten steel will still cause the smoke and dust to overflow from the connecting gaps, thereby affecting the working environment on site; and the solvent-containing materials added during the molten steel smelting process are themselves in a dusty state. During the feeding process, dust will overflow from the gaps in the feeding pipe, hopper, etc. The operators are in a dusty working environment for a long time, which is easy to affect the occupational health of the workers and increase the probability of occupational diseases among the operators.

[0003] Therefore, a fume absorption and sealing device for refining and smelting areas is invented to solve the above problems. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a smoke dust absorption sealing device for the refining and smelting area in view of the deficiencies of the above-mentioned prior art. The smelting area of ​​the refining furnace is completely sealed by combining a sealing box and a bottom sealing platform, so that after the smoke is sucked into the closed area, the smoke can be easily sucked into the dust removal pipe and then output from the dust removal main pipe. At the same time, the feeding pipe is also placed in the closed smelting area, and the dust generated by the feeding will also be sucked in to avoid scattering at the work site, thereby improving the work site environment.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0006] A fume absorption sealing device for a refining and smelting area comprises a sealing box and a bottom sealing platform, wherein the bottom of the sealing box is set as an open structure, and the bottom sealing platform is fixed at the bottom opening of the sealing box, and the sealing box and the bottom sealing platform constitute a mechanism to seal the smelting area of ​​the refining furnace;

[0007] A furnace cover hood is embedded in the bottom sealing platform, and the furnace cover hood is connected to the top of the ladle to recover smoke and excess dust generated in the smelting production. A dust suction pipe runs through the side wall of the furnace cover hood, and a high-temperature smoke exhaust fan is provided at the end of the dust suction pipe to draw the smoke into the closed smelting area. A plurality of dust suction ports are opened at the top of the side wall of the sealing box, and dust removal pipes are inserted in the plurality of dust suction ports, and the plurality of dust removal pipes are connected to the dust removal main pipe;

[0008] The sealed box is provided with an inclined feeding pipe, and both ends of the feeding pipe penetrate the side wall of the sealed box and the bottom sealing platform respectively, and the bottom end of the feeding pipe extends into the bottom of the furnace cover hood. Sealing fillers are provided at the connection between the furnace cover hood and the bottom sealing platform, the connection between the dust removal pipe and the dust suction port, and the connection between the feeding pipe and the sealed box, the bottom sealing platform and the furnace cover hood.

[0009] Preferably, a smelting auxiliary mechanism is provided in the closed smelting area, and the smelting auxiliary mechanism includes an electrode, and the fusion reaction of the alloy and the solvent with the molten steel is accelerated by energizing the electrode, and a through hole is penetrated through the top of the furnace cover and smoke hood, and the electrode corresponds to the through hole and passes through the inside thereof;

[0010] The top of the bottom sealing platform is fixedly connected with a guide column, on which a conductive cross arm is arranged, and the conductive cross arm moves vertically on the guide column through a driving mechanism, and the electrode is mounted on the conductive cross arm.

[0011] Preferably, a replacement port is opened on the top of the sealing box, and the replacement port is located directly above the electrode installation position. A sliding door is arranged above the replacement port, and an electric push rod is fixedly installed on the bottom of the sliding door, and a closing plate is transmission-connected to the output end of the electric push rod, and the outer diameter of the closing plate matches the inner diameter of the replacement port.

[0012] Preferably, the top wall of the sealed box is provided with parallel guide rails on both sides of the replacement port, and the sliding door is slidably connected to the top of the guide rails;

[0013] A rack is provided on the guide rail, a reduction motor is fixedly installed on the sliding door, and the output shaft of the reduction motor is connected to a gear, the gear is meshed with the rack for transmission, and the reduction motor is remotely connected to the control computer in the main control room through communication.

[0014] Preferably, an inspection port is provided on the top of the sealing box, which is located directly above the guide column and the conductive cross arm and is opened for use during equipment maintenance. A detachable inspection cover is installed in the inspection port, which is covered during smelting production in the refining furnace and sealed with a sealing packing.

[0015] Preferably, the top wall of the bottom sealing platform is arranged as an inclined surface, a discharge port is opened at the bottom end of the inclined surface of the bottom sealing platform, and a sealing plug is arranged in the discharge port, and a hair dryer is arranged at the top end of the inclined surface of the bottom sealing platform to discharge the settled dust out of the closed smelting area.

[0016] Preferably, the outer sides of the sealing box and the bottom sealing platform are wrapped with a heat insulation layer, and the heat insulation layer is made of polyurethane foam material.

[0017] The utility model has the following beneficial effects:

[0018] The smelting area of ​​the refining furnace is completely enclosed by a combination of a sealing box and a bottom sealing platform, so that after the flue gas is sucked into the enclosed area, the smoke can be easily sucked into the dust removal pipe and then output from the dust removal main pipe. At the same time, the feeding pipe is also placed in the enclosed smelting area, and the dust generated by the feeding will also be sucked in to avoid it from floating on the work site, thereby improving the work site environment. The smelting auxiliary mechanism is installed inside the enclosed area, and cooperates with the installation structure of the sealing box and the bottom sealing platform to ensure the smelting effect while achieving full recovery and treatment of the flue gas and reducing flue gas overflow. In addition, movable sliding doors and inspection covers are arranged to facilitate subsequent maintenance and replacement, thereby improving the convenience of using the device and reducing maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the internal structure of the smoke absorption and sealing device provided by the utility model;

[0020] Figure 2 It is a top view of the overall structure of the utility model;

[0021] Figure 3 This is a structural schematic diagram of another embodiment of the bottom sealing platform provided by the utility model.

[0022] Among them are:

[0023] Sealing box-1; bottom sealing platform-2; furnace cover hood-3; ladle-4; dust suction pipe-5; dust removal pipe-6; dust removal main pipe-7; feeding pipe-8; electrode-9; through port-10; guide column-11; conductive cross arm-12; sliding door-13; electric push rod-14; closing plate-15; guide rail-16; reduction motor-17; inspection cover-18; unloading port-19; sealing plug-20; blower-21. DETAILED DESCRIPTION

[0024] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific preferred embodiments.

[0025] In the description of the present invention, it should be understood that the terms "left side", "right side", "upper part", "lower part", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. "First", "second", etc. do not indicate the importance of the components, and therefore cannot be understood as a limitation on the present invention. The specific dimensions used in this embodiment are only for illustrating the technical solution, and do not limit the scope of protection of the present invention.

[0026] like Figure 1-3As shown, a fume absorption sealing device for a refining and smelting area comprises a sealing box 1 and a bottom sealing platform 2. The bottom of the sealing box 1 is set as an open structure, and the bottom sealing platform 2 is fixed at the bottom opening of the sealing box 1. The sealing box 1 and the bottom sealing platform 2 constitute a mechanism to seal the smelting area of ​​the refining furnace.

[0027] A furnace cover hood 3 is embedded on the bottom sealing platform 2, and the furnace cover hood 3 is connected to the top of the ladle 4 to recover the smoke and excess dust generated in the smelting production. A dust suction pipe 5 runs through the side wall of the furnace cover hood 3, and a high-temperature smoke exhaust fan is arranged at the end of the dust suction pipe 5 to draw the smoke into the closed smelting area. A plurality of dust suction ports are opened at the top of the side wall of the sealing box 1, and dust removal pipes 6 are inserted in the plurality of dust suction ports. The plurality of dust removal pipes 6 are connected to the dust removal main pipe 7 together. The smoke overflowed by the high-temperature air pressure will float upward. After the smoke leaves the high-temperature area, it is affected by gravity. When the smoke reaches the top position, it just reaches the position of the dust suction port of the dust removal device. The smoke is easily sucked into the dust removal pipe 6 and then output from the dust removal main pipe 7.

[0028] A feeding pipe 8 distributed in an inclined shape is arranged in the sealing box 1, and the two ends of the feeding pipe 8 pass through the side wall of the sealing box 1 and the bottom sealing platform 2 respectively, and the bottom end of the feeding pipe 8 extends into the bottom of the furnace cover hood 3, so as to facilitate the delivery of the solvent-containing material into the ladle 4, and the feeding pipe 8 is also placed in a closed smelting area, so that the dust generated by the feeding will also be sucked in to avoid being scattered at the work site, thereby improving the work site environment; sealing fillers are provided at the connection between the furnace cover hood 3 and the bottom sealing platform 2, at the connection between the dust removal pipe 6 and the dust suction port, and at the connection between the feeding pipe 8 and the sealing box 1, the bottom sealing platform 2 and the furnace cover hood 3.

[0029] Furthermore, a smelting auxiliary mechanism is provided in the closed smelting area, and the smelting auxiliary mechanism includes an electrode 9, and the fusion reaction of the alloy and the solvent with the molten steel is accelerated by energizing the electrode 9. A through hole 10 is penetrated through the top of the furnace cover hood 3, and the electrode 9 corresponds to the through hole 10 and passes through the inside thereof;

[0030] A guide column 11 is fixedly connected to the top of the bottom cover platform 2 , a conductive cross arm 12 is arranged on the guide column 11 , and the conductive cross arm 12 moves vertically on the guide column 11 through a driving mechanism, and the electrode 9 is installed on the conductive cross arm 12 .

[0031] Furthermore, a replacement port is provided on the top of the sealing box 1, and the replacement port is located just above the installation position of the electrode 9. A sliding door 13 is provided above the replacement port. When the electrode 9 needs to be lifted, it is only necessary to operate the computer to open the sliding door 13. After the lifting is completed, the sliding door 13 can be closed by operating the computer. An electric push rod 14 is fixedly installed at the bottom of the sliding door 13, and a closing plate 15 is transmission-connected to the output end of the electric push rod 14. The outer diameter of the closing plate 15 matches the inner diameter of the replacement port. When the sliding door 13 moves, the electric push rod 14 is in a retracted state. At this time, the closing plate 15 is separated from the replacement port. When closed, the closing plate 15 can block the replacement port and achieve sealing.

[0032] Furthermore, parallel guide rails 16 are provided on the top wall of the sealing box 1 and on both sides of the replacement port, and the sliding door 13 is slidably connected to the top of the guide rails 16;

[0033] A rack is provided on the guide rail 16, a reduction motor 17 is fixedly installed on the sliding door 13, and the output shaft of the reduction motor 17 is connected to a gear, the gear and the rack are meshed for transmission, and the reduction motor 17 is remotely connected to the control computer in the main control room through communication.

[0034] Furthermore, an inspection port is provided on the top of the sealing box 1. The inspection port is located directly above the guide column 11 and the conductive cross arm 12, and is opened for use when the equipment is repaired. A detachable inspection cover 18 is installed in the inspection port. During smelting production in the refining furnace, the inspection cover 18 is covered and sealed with a sealing packing.

[0035] As another embodiment of the bottom sealing platform 2 in the utility model, in order to discharge the dust in the closed smelting area, the top wall of the bottom sealing platform 2 is set as an inclined surface, a discharge port 19 is opened at the bottom end of the inclined surface of the bottom sealing platform 2, and a sealing plug 20 is arranged in the discharge port 19, and a hair dryer 21 is arranged at the top end of the inclined surface of the bottom sealing platform 2 to discharge the settled dust from the closed smelting area. The dust slides down from the inclined surface, and with the wind force of the hair dryer 21, the sealing plug 20 is opened to make the discharge port 19 unobstructed, and the dust can be discharged at this time.

[0036] Furthermore, the outside of the sealed box 1 and the bottom sealing platform 2 are wrapped with a heat insulation layer, which is made of polyurethane foam material. For high-temperature flue gas, it has a heat insulation effect on the sealed box 1 and the bottom sealing platform 2, thereby ensuring safety during the working process.

[0037] When the utility model is in operation, the smelting area of ​​the refining furnace is completely sealed by using the sealing box 1 and the bottom sealing platform 2, a dust suction port is reserved at a position close to the dust removal main pipe 7, and the dust removal pipe 6 is connected to the dust removal main pipe 7. The smoke generated by the smelting will float upward due to the high temperature air pressure. After the smoke leaves the high temperature area, it will be affected by gravity. When the smoke reaches the peak position, it just reaches the dust suction port position of the dust removal device. The smoke is easily sucked into the dust removal pipe 6 and then output from the dust removal main pipe 7. At the same time, the feeding pipe 8 is also placed in the closed smelting area, and the dust generated by the feeding will also be sucked in to avoid floating in the work site, thereby improving the work site environment. The movable sliding door 13 and the inspection cover 18 are arranged to facilitate subsequent maintenance and replacement, improve the convenience of the device and reduce the maintenance cost.

[0038] The above is a detailed description of the embodiments of the present invention in conjunction with the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. A smoke absorption and sealing device for a refining and smelting area, characterized in that: It comprises a sealed box (1) and a bottom sealing platform (2), wherein the bottom of the sealed box (1) is arranged to be an open structure, and the bottom sealing platform (2) is fixed at the bottom opening of the sealed box (1), and the mechanism formed by the sealed box (1) and the bottom sealing platform (2) seals the smelting area of ​​the refining furnace; A furnace cover hood (3) is embedded on the bottom sealing platform (2), and the furnace cover hood (3) is connected to the top of the ladle (4) and is used to recover smoke and excess dust generated during smelting production. A dust suction pipe (5) runs through the side wall of the furnace cover hood (3), and a high-temperature smoke exhaust fan is provided at the end of the dust suction pipe (5) to draw the smoke into the closed smelting area. A plurality of dust suction ports are opened at the top of the side wall of the sealing box (1), and dust removal pipes (6) are inserted into the plurality of dust suction ports. The plurality of dust removal pipes (6) are connected to a dust removal main pipe (7). The sealed box (1) is provided with a feeding pipe (8) distributed in an inclined shape, and the two ends of the feeding pipe (8) respectively penetrate the side wall of the sealed box (1) and the bottom sealing platform (2), and the bottom end of the feeding pipe (8) extends into the bottom of the furnace cover hood (3). The connection between the furnace cover hood (3) and the bottom sealing platform (2), the connection between the dust removal pipe (6) and the dust suction port, and the connection between the feeding pipe (8) and the sealed box (1), the bottom sealing platform (2) and the furnace cover hood (3) are all provided with sealing fillers.

2. A smoke absorption and sealing device for a refining and smelting area according to claim 1, characterized in that: A smelting auxiliary mechanism is arranged in the closed smelting area, and the smelting auxiliary mechanism includes an electrode (9). The fusion reaction of the alloy and the solvent with the molten steel is accelerated by energizing the electrode (9). A through hole (10) is penetrated through the top of the furnace cover hood (3), and the electrode (9) corresponds to the through hole (10) and passes through the inside thereof; A guide column (11) is fixedly connected to the top of the bottom cover platform (2), a conductive cross arm (12) is provided on the guide column (11), and the conductive cross arm (12) moves vertically on the guide column (11) through a driving mechanism, and the electrode (9) is mounted on the conductive cross arm (12).

3. A smoke absorption and sealing device for a refining and smelting area according to claim 2, characterized in that: The top of the sealing box (1) is provided with a replacement opening, the replacement opening being located directly above the installation position of the electrode (9), a sliding door (13) being provided above the replacement opening, an electric push rod (14) being fixedly installed at the bottom of the sliding door (13), and a closing plate (15) being transmission-connected to the output end of the electric push rod (14), the outer diameter of the closing plate (15) matching the inner diameter of the replacement opening.

4. A smoke absorption and sealing device for a refining and smelting area according to claim 3, characterized in that: The top wall of the sealing box (1) is provided with parallel guide rails (16) located on both sides of the replacement opening, and the sliding door (13) is slidably connected to the top of the guide rails (16); The guide rail (16) is provided with a rack, a reduction motor (17) is fixedly mounted on the sliding door (13), and the output shaft of the reduction motor (17) is connected to a gear, the gear and the rack are meshed for transmission, and the reduction motor (17) is remotely connected to a control computer in a main control room.

5. The smoke absorption and sealing device for refining and smelting area according to claim 1 is characterized by: The sealing box (1) is provided with an inspection opening at the top, which is located directly above the guide column (11) and the conductive cross arm (12) and is opened for use during equipment maintenance. A detachable inspection cover (18) is installed in the inspection opening. During smelting production in the refining furnace, the inspection cover (18) is covered and sealed with a sealing packing.

6. The smoke absorption and sealing device for the refining and smelting area according to claim 1 is characterized by: The top wall of the bottom sealing platform (2) is arranged as an inclined surface, a discharge port (19) is provided at the bottom end of the inclined surface of the bottom sealing platform (2), a sealing plug (20) is arranged in the discharge port (19), and a blower (21) is arranged at the top end of the inclined surface of the bottom sealing platform (2) to discharge settled dust out of the closed smelting area.

7. The smoke absorption and sealing device for refining and smelting area according to claim 1 is characterized by: The outer sides of the sealing box (1) and the bottom sealing platform (2) are wrapped with a heat insulation layer, and the heat insulation layer is made of polyurethane foam material.

Images