A retractable shutter dust and smoke removal system

Abstract

The present invention discloses a shutter-type telescopic dust and smoke removal system, comprising a dust hood and a square main dust removal pipe, wherein the dust hood is installed directly above a slab flame cutting machine, the slab flame cutting machine being used to cut a continuous casting billet body and being movable in the longitudinal direction of the continuous casting billet body, and the outer wall of the square main dust removal pipe on one side close to the continuous casting billet body being fixedly connected to a slide rail. The present invention adds a telescopic dust removal pipe between the square main dust removal pipe and the dust hood, wherein the bracket and the dust hood drive the smoke pipe and the movable end of the telescopic dust removal pipe to move with the slab flame cutting machine, so that the telescopic dust removal pipe performs a coaxial retractable movement on the slide rail, the pipe achieves tracking while maintaining its closedness, the dust collector generates suction, and smoke generated by the metal cutting operation enters the dust hood, passes through the smoke pipe and the telescopic dust hood, and enters the square main dust removal pipe at the air intake port, and is sucked away and processed by the dust collector. The present invention is suitable for working conditions where the slab flame cutting machine drives the dust removal hood with a long travel, a large diameter, and a high regional ambient temperature.

Description

Technical Field

[0001] The invention relates to the technical field of slab processing, in particular to a telescopic shutter type dust and smoke removal system. Background Art

[0002] The slab continuous casting machine's flaming cutter produces yellow smoke during in-line flaming, failing to meet national ultra-low emission standards. Typically, a flaming cutter dust hood is installed on top of the cutter, using an existing dust collector to extract the smoke. However, due to the wide slabs, the cutter travels over 11 meters during flaming. To effectively remove dust, the dust collection pipe requires a large diameter, making the bellows inadequate.

[0003] The existing technology uses a rectangular steel tube with an 11-meter-long opening at the top. This opening is covered with a sliding thin steel plate to reduce drafts. The thin steel plate is mounted on the dust collector suction duct of the fire cutter and is driven by the fire cutter. However, the 11-meter windshield creates significant resistance during operation, making it difficult for the fire cutter's travel motor to withstand. If a rubber sheet were used, its low hardness would prevent proper movement and its lifespan would be shortened by exposure to high temperatures. These solutions have limited feasibility, a high failure rate, and fail to meet production and environmental requirements.

[0004] Therefore, it is necessary to develop a telescopic dust and smoke removal system to solve the above problems. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a retractable shutter dust and smoke removal system to address the above-mentioned deficiencies in the prior art. Compared with the prior art, the present invention has good feasibility, significantly reduced failure rate, and can meet production and environmental protection requirements.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] A telescopic louver dust and smoke removal system includes a dust hood and a square main dust removal pipe, wherein the dust hood is installed directly above a slab flame cutting machine, the slab flame cutting machine is used to cut the continuous casting billet body and is movable in the length direction of the continuous casting billet body, the square main dust removal pipe is fixedly connected to the outer wall of the side close to the continuous casting billet body, and a telescopic dust removal pipe is movably provided on the outer side of the slide rail, and a smoke pipe is provided on one side of the top of the dust hood, and the smoke pipe is connected to the dust hood;

[0008] The two ends of the telescopic dust removal pipe are respectively a fixed end and a movable end, wherein the fixed end and the movable end are respectively connected to the end of the square main dust removal pipe and the end of the smoking pipe through flanges. The dust removal cover drives the smoking pipe and the movable end of the telescopic dust removal pipe to move with the slab hot cutting machine, so that the telescopic dust removal pipe performs coaxial retraction and extension movement on the slide rail;

[0009] An air suction port is provided on the outer wall of the square main dust removal pipe at the fixed end of the telescopic dust removal pipe. The telescopic dust removal pipe is connected to the square main dust removal pipe through the air suction port. The dust removal cover is connected to the telescopic dust removal pipe through a smoke pipe.

[0010] The telescopic dust removal tube includes a plurality of C-shaped steel plates, and a cleaning assembly is provided on the first C-shaped steel plate located at the movable end, which includes a closing plate detachably mounted on one side of the movable end of the telescopic dust removal tube by screws, and a through slot for the slide rail to pass through is reserved on the closing plate, and the closing plate is in sliding contact with the inner side wall of the slide rail and the bottom wall of the square main dust removal tube, and a blower is embedded in the closing plate, and a second motor is fixedly connected to both sides of the blower;

[0011] The cleaning assembly also includes a screw rod rotatably connected to the closing plate, the number of which is set to two, and the second motor output shaft is transmission-connected to the screw rod, the screw rod is arranged in a groove opened on both sides of the inner wall of the C-shaped steel plate, and a moving block is threadedly sleeved on the screw rods on both sides, and a wedge-shaped scraping plate is rotatably connected between the two moving blocks, and a torsion spring is sleeved between the wedge scraping plate and the moving block.

[0012] Preferably, the C-shaped steel plate is made of stainless steel thin plate, and multiple C-shaped steel plates are nested in sequence from large to small along the length direction of the square main dust removal pipe, and two adjacent C-shaped steel plates are attached to each other and slidably connected. A limiting groove is provided on the inner wall of the C-shaped steel plate, and a limiting block matching the limiting groove is fixedly connected to the outer side of the C-shaped steel plate. One end of the limiting groove passes through the side wall of the C-shaped steel plate and is open, and the other end is closed, which is used for pulling and stopping between the C-shaped steel plates.

[0013] Preferably, the slide rail is made of two parallel and axially symmetrically distributed angle steels, which are welded to the outer wall of the square main dust removal pipe. The two sides of the opening of the C-shaped steel plate are respectively clamped on the two angle steels, and sealing packings are provided on their contact surfaces.

[0014] Preferably, a filter screen is provided between the two angle steels and is made of stainless steel, and the filter screen covers the outside of the air suction port.

[0015] Preferably, the continuous casting slab body is conveyed by a roller conveyor, and parallel tracks are provided on both sides of the roller conveyor. Brackets are installed at the bottom of both sides of the slab hot cutting machine, and the brackets are slidably connected to the tracks.

[0016] Preferably, a first motor is fixedly connected to the bracket, and the output shaft of the first motor is transmission-connected to a gear, and a rack is fixedly connected to the outer side of the track, and the gear and the rack are meshed for transmission.

[0017] Preferably, the air suction port is opened on a side of the square main dust removal pipe close to the slab fire cutting machine and is located at the end position of the slab fire cutting machine.

[0018] Preferably, a dust collector is provided at the output end of the square main dust removal pipe, which adopts an induced draft fan.

[0019] Preferably, the smoking pipe is made of a hard metal tube, and a limit ring bonded to the C-shaped steel plate is provided on one side of the smoking pipe. A proximity sensor is provided on the side of each C-shaped steel plate close to the smoking pipe for sensing the position of the smoking pipe and the dust cover. An electronic lock is provided between the ends of two adjacent C-shaped steel plates for connecting and locking the two adjacent C-shaped steel plates after they are fully unfolded.

[0020] Preferably, the dust and smoke removal system also includes a single-chip microcomputer, whose input and output ends are electrically connected to an A / D converter and a D / A converter respectively, multiple proximity sensors are electrically connected to the A / D converter, and the electronic lock is electrically connected to the D / A converter.

[0021] The present invention has the following beneficial effects:

[0022] 1. By adding a telescopic dust removal pipe between the square main dust removal pipe and the dust removal hood, the bracket and the dust removal hood drive the smoke pipe and the movable end of the telescopic dust removal pipe to move with the slab flame cutting machine, so that the telescopic dust removal pipe performs coaxial storage and telescopic movement on the slide rail. The pipe achieves follow-up while maintaining its closedness. The dust collector generates suction, and the smoke and dust generated by the metal cutting operation enters from the dust removal hood, passes through the smoke pipe and the telescopic dust removal hood, and enters the square main dust removal pipe at the air suction port, and is sucked away and processed by the dust collector. This invention is suitable for working conditions where the slab flame cutting machine drives the dust removal hood with a long stroke, a large diameter, and a high regional ambient temperature. Compared with the existing technology, the present invention has good feasibility, significantly reduced failure rate, and can meet production and environmental protection requirements.

[0023] 2. Through the structural coordination of the telescopic dust removal pipe, combined with the intelligent control system composed of proximity sensors and electronic locks, under its working mode, the C-shaped steel plate on the telescopic dust removal pipe can be folded layer by layer, and the closing plate contacts and scrapes the inner wall of the slide rail and the bottom wall of the square main dust removal pipe to clean the impurities attached thereon. With the cooperation of the moving block and the torsion spring, the impurities in the C-shaped steel plate are scraped into another adjacent C-shaped steel plate, and the impurities are continuously scraped off and pushed toward the air suction port. With the work of the blower, the scraped impurities are blown from the side to the fixed end of the telescopic dust removal pipe and discharged from the air suction port, realizing the automatic cleaning and discharge of impurities inside the telescopic dust removal pipe;

[0024] 3. By setting up a filter to filter large particles of impurities in the smoke, the problem of impurities adhering to the inner wall of the C-shaped steel plate causing jamming after long-term use can be avoided. In addition, the hidden danger of blockage on the inside of the telescopic dust removal pipe can be solved. The limit groove and the limit block are used to pull and stop between the C-shaped steel plates to achieve the purpose of free expansion and contraction, prevent separation between the structures, and have high safety and stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic diagram of the overall structure of the telescopic louver dust and smoke removal system provided by the present invention;

[0026] Figure 2 For the present invention Figure 1 AA cross-sectional structural diagram of the structure shown;

[0027] Figure 3 For the present invention Figure 2 A magnified view of the structure of the middle part A;

[0028] Figure 4 For the present invention Figure 1 BB cross-sectional structural diagram of the structure shown;

[0029] Figure 5 A three-dimensional diagram of a partial section of the telescopic dust removal pipe in the present invention;

[0030] Figure 6 For the present invention Figure 5 A partially cutaway perspective view of the structure shown;

[0031] Figure 7 This is a schematic diagram of the combined structure of the square main dust removal pipe, slide rail, telescopic dust removal pipe and cleaning assembly in the present invention;

[0032] Figure 8 Schematic diagram of the matching structure of the closing plate, C-shaped steel plate and slide rail in the present invention;

[0033] Figure 9 For the present invention Figure 7 An exploded view of the structure shown from a first perspective;

[0034] Figure 10 For the present invention Figure 7 An exploded view of the structure from a second perspective;

[0035] Figure 11 For the present invention Figure 7 A partial cross-sectional view of the structure shown;

[0036] Figure 12 This is a system control flow chart of the intelligent control system in the present invention.

[0037] Among them are:

[0038] Dust hood-1; square main dust removal pipe-2; slab flame cutting machine-3; continuous casting slab body-4; slide rail-5; telescopic dust removal pipe-6; smoke pipe-7; air inlet-8; filter-9; track-10; bracket-11; first motor-12; gear-13; rack-14; single-chip microcomputer-15; closing plate-16; blower-17; second motor-18; screw-19; moving block-20; wedge-shaped scraper-21; torsion spring-22; limit ring-23; proximity sensor-24; electronic lock-25;

[0039] C-shaped steel plate-61; limiting groove-62; limiting block-63. DETAILED DESCRIPTION

[0040] The present invention will be further described in detail below with reference to the accompanying drawings and specific preferred embodiments.

[0041] In the description of the present invention, it should be understood that the terms "left side," "right side," "upper," "lower," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Terms such as "first" and "second" do not indicate the importance of components and therefore should not be construed as limitations on the present invention. The specific dimensions used in this embodiment are intended only to illustrate the technical solution and do not limit the scope of protection of the present invention.

[0042] like Figure 1-11 As shown, a shutter-type telescopic dust and fume removal system includes a dust hood 1 and a square main dust removal pipe 2. The dust hood 1 is installed directly above a slab flame cutter 3. The slab flame cutter 3 is used to cut a continuous-cast billet body 4 and moves in the longitudinal direction of the continuous-cast billet body 4. When the slab flame cutter 3 cuts the continuous-cast billet body 4, the yellow smoke generated rises and is covered by the dust hood 1 on top of it. The suction force at its output port forms a negative pressure, similar to a range hood, which sucks away the yellow smoke. The dust hood 1 always moves with the slab flame cutter 3 to cover the cutting area.

[0043] The outer wall of the square main dust removal pipe 2 close to the continuous casting billet body 4 is fixedly connected to a slide rail 5, and a telescopic dust removal pipe 6 is movably provided on the outer side of the slide rail 5. A smoking pipe 7 is provided on one side of the top of the dust removal cover 1, and the smoking pipe 7 is connected to the dust removal cover 1. The smoking pipe 7 and the dust removal cover 1 can be directly welded and fixed;

[0044] The two ends of the telescopic dust removal pipe 6 are respectively a fixed end and a movable end. The fixed end and the movable end are respectively connected to the ends of the square main dust removal pipe 2 and the smoking pipe 7 through flanges. The dust removal cover 1 drives the smoking pipe 7 and the movable end of the telescopic dust removal pipe 6 to move with the slab hot cutting machine 3, so that the telescopic dust removal pipe 6 performs a coaxial storage and telescopic movement on the slide rail 5, which is similar to the folding and storage structure of the telescopic rod of an umbrella, achieving a following effect of the pipe and maintaining the sealing of the pipe;

[0045] An air suction port 8 is provided on the outer wall of the square main dust removal pipe 2 and at the fixed end of the telescopic dust removal pipe 6. The telescopic dust removal pipe 6 is connected to the square main dust removal pipe 2 through the air suction port 8, and the dust removal cover 1 is connected to the telescopic dust removal pipe 6 through the smoking pipe 7.

[0046] The telescopic dust removal pipe 6 includes a plurality of C-shaped steel plates 61. A cleaning assembly is provided on the first C-shaped steel plate 61 at the movable end, which is used to clean impurities adhering to the inner wall of the C-shaped steel plate 61, the inner side of the slide rail 5, and the outer wall of the square main dust removal pipe 2 during the smoke and dust transportation process.

[0047] As a preferred embodiment of the cleaning assembly in the present application, it includes a closing plate 16 that is detachably mounted on one side of the movable end of the telescopic dust collection tube 6 by screws, and a through groove for the slide rail 5 to pass through is reserved on the closing plate 16, and the sealing gasket seals the movable end of the telescopic dust collection tube 6 while ensuring that the closing plate 16 can slide smoothly on the slide rail 5 to avoid getting stuck and interfering, and the closing plate 16 slides in contact with the inner side wall of the slide rail 5 and the bottom wall of the square main dust collection tube 2. During the sliding process, it contacts and scrapes the inner side wall of the slide rail 5 and the bottom wall of the square main dust collection tube 2 to clean the impurities attached thereto, and an air blower 17 is embedded in the closing plate 16. By controlling the operation of the air blower 17, the scraped impurities are blown from the side to the fixed end of the telescopic dust collection tube 6 and discharged from the suction port 8, which is convenient for cleaning the inside of the telescopic dust collection tube 6;

[0048] The cleaning assembly also includes a screw rod 19 rotatably connected to the closing plate 16. A second motor 18 is fixedly connected to both sides of the closing plate 16. The number of the second motor 18 is the same as that of the screw rod 19, and the output shaft of the second motor 18 is transmission-connected to the screw rod 19. The screw rod 19 is arranged in a groove opened on both sides of the inner wall of the C-shaped steel plate 61. A moving block 20 is threadedly sleeved on the screw rod 19 on both sides, and a wedge-shaped scraping plate 21 is rotatably connected between the two moving blocks 20. A torsion spring 22 is sleeved between the wedge-shaped scraping plate 21 and the moving block 20.

[0049] Specifically, the C-shaped steel plate 61 is made of stainless steel thin plate, and multiple C-shaped steel plates 61 are nested in sequence from large to small along the length direction of the square main dust removal pipe 2, and two adjacent C-shaped steel plates 61 are attached to each other and slidably connected, and a limiting groove 62 is provided on the inner wall of the C-shaped steel plate 61, and a limiting block 63 matching the limiting groove 62 is fixedly connected to the outer side of the C-shaped steel plate 61. One end of the limiting groove 62 passes through the side wall of the C-shaped steel plate 61 and is open, and the other end is closed, which is used for pulling and stopping between each C-shaped steel plate 61 to achieve the purpose of free expansion and contraction. Of course, the cooperation between the limiting groove 62 and the limiting block 63 is only a preferred embodiment, and other matching structures can also be used. For example, a limiting block is welded on the upper, lower, left and right four corners of the C-shaped steel plate to block when two adjacent C-shaped steel plates 61 are about to separate, so as to achieve the effect of pulling and stopping.

[0050] The longitudinal section of the wedge-shaped scraping plate 21 is as follows: Figure 11 As shown, its blade-shaped bottom end is in linear contact with the inner wall of the C-shaped steel plate 61, and the bottom surface of the wedge-shaped scraper plate 21 is inclined. In this way, under the cooperation of the moving block 20 and the torsion spring 22, when the wedge-shaped scraper plate 21 moves from the movable end of the telescopic dust removal tube 6 to the fixed end, the blade-shaped bottom end of the C-shaped steel plate 61 is in force contact with the inner wall of the C-shaped steel plate 61, and conversely, the blade-shaped bottom end of the C-shaped steel plate 61 is not subject to force, so that impurities in the C-shaped steel plate 61 can be scraped into another adjacent C-shaped steel plate 61. Since the multiple C-shaped steel plates 61 are nested in sequence from large to small along the length direction of the square main dust removal tube 2, and the two adjacent C-shaped steel plates 61 are attached to each other and slidably connected, that is, when the multiple C-shaped steel plates 61 are folded and stored in sequence, the impurities can be continuously scraped off and sent to the direction of the air suction port 8, thereby achieving the cleaning and discharge of impurities;

[0051] The above structure cooperates to absorb the smoke generated by the slab hot cutting machine 3 cutting the continuous casting billet body 4 and recycles it. It is suitable for working conditions where the slab hot cutting machine 3 drives the dust removal hood 1 with a long stroke, large diameter and high regional ambient temperature.

[0052] Regarding the production of the telescopic dust removal tube 6, in the embodiment given in this application, the number of C-shaped steel plates 61 is set to 23, and the cross-section of the C-shaped steel plate 61 is set to a rectangle, and the steel plate is made into a "C" shape as a whole, so that it can be clamped with the slide rail 5 composed of the upper and lower angle steels. In this embodiment, the material of the C-shaped steel plate 61 is 1Cr13, and the minimum length of the telescopic dust removal tube 6 composed of 23 C-shaped steel plates 61 in the compressed state is 1100mm. After it is fully expanded, the maximum length of the telescopic dust removal tube 6 is 11000mm, and the length of the slide rail 5 matched with it is set to 11.5m.

[0053] Furthermore, in the above technical solution, the slide rail 5 is made of two parallel and axially symmetrically distributed angle steels, which are welded to the outer wall of the square main dust removal pipe 2. The two sides of the opening of the C-shaped steel plate 61 are respectively clamped on the two angle steels, and sealing packings are provided on their contact surfaces. The outer side surfaces of the C-shaped steel plates 61 at the two ends are closed to prevent smoke and dust from overflowing from the telescopic dust removal pipe 6.

[0054] Furthermore, in the above technical solution, a filter screen 9 is provided between the two angle steels, which is made of stainless steel metal, and the filter screen 9 covers the outside of the air intake port 8 to filter out large particles of impurities in the smoke and dust, thereby avoiding the problem of impurities adhering to the inner wall of the C-shaped steel plate 61 and causing it to get stuck after long-term use. In addition, it can also solve the hidden danger of blockage on the inside of the telescopic dust removal pipe 6.

[0055] Furthermore, in the above technical solution, the continuous casting billet body 4 is transported by a roller conveyor, and parallel tracks 10 are provided on both sides of the roller conveyor. Brackets 11 are installed at the bottom of both sides of the slab fire cutting machine 3, and the brackets 11 are slidably connected to the tracks 10 to facilitate flexible movement of the slab fire cutting machine 3.

[0056] Furthermore, in the above technical solution, a first motor 12 is fixedly connected to the bracket 11, and the output shaft of the first motor 12 is connected to a gear 13, a rack 14 is fixedly connected to the outside of the track 10, and the gear 13 is meshed with the rack 14 for transmission, and the output shaft of the first motor 12 drives the gear 13, which further meshes with the rack 14, so that the bracket 11 and the slab fire cutting machine 3 on its top are actively moved, thereby achieving the purpose of automatically adjusting the cutting position.

[0057] Furthermore, in the above technical solution, the air suction port 8 is opened on the side of the square main dust removal pipe 2 close to the slab fire cutting machine 3, and is located at the end position of the travel of the slab fire cutting machine 3 to avoid smoke escape.

[0058] Furthermore, in the above technical solution, a dust collector is provided at the output end of the square main dust removal pipe 2, which adopts an induced draft fan. The sucked smoke and dust enter from the dust hood 1, pass through the smoking pipe 7 and the telescopic dust hood 1 and enter the square main dust removal pipe 2, and are sucked away and processed by the dust collector.

[0059] Furthermore, in the above technical solution, if Figure 4 and Figure 12 As shown, the smoking pipe 7 is made of a hard metal tube, and a limit ring 23 bonded to the C-shaped steel plate 61 is provided on one side thereof. The corresponding C-shaped steel plate 61 stops folding after folding to the position of the limit ring 23 to avoid the hidden danger of hitting the smoking pipe 7 and causing smoke leakage;

[0060] A proximity sensor 24 is provided on the side of each C-shaped steel plate 61 close to the smoking pipe 7 for sensing the position of the smoking pipe 7 and the dust removal cover 1. An electronic lock 25 is provided between the ends of two adjacent C-shaped steel plates 61 for connecting and locking the two adjacent C-shaped steel plates 61 after they are fully unfolded.

[0061] Furthermore, in the above technical solution, the dust and smoke removal system further includes a single chip microcomputer 15, whose input and output ends are electrically connected to an A / D converter and a D / A converter respectively, a plurality of proximity sensors 24 are electrically connected to the A / D converter, and an electronic lock 25 is electrically connected to the D / A converter;

[0062] The working mode of the intelligent control system realized based on the cooperation of the above components is as follows: by setting the sensing range value of the proximity sensor 24 in the single-chip computer 15, the proximity sensor 24 is used to sense the movement process of the smoking pipe 7 and the dust hood 1. When they move to the set range, the corresponding electronic lock 25 is activated to trigger the switch. When the smoking pipe 7 and the dust hood 1 continue to be pushed and the telescopic dust removal pipe 6 needs to be folded, the nearest electronic lock 25 is opened to release the two adjacent C-shaped steel plates 61 from the fixed state. At the same time, the remaining electronic locks 25 remain in a locked state, which can realize the layer-by-layer folding of the C-shaped steel plates 61 on the telescopic dust removal pipe 6, making it easy to control the folding process, thereby facilitating the effective cleaning of its inner wall.

[0063] Furthermore, in the above technical solution, a sealing gasket is provided at the connection between the flange and the square main dust removal pipe 2 and the smoke pipe 7, such as a rubber strip sealed to prevent wild wind from entering.

[0064] The dust collecting hood 1 is moved along with the movement of the dust collecting hood 1 and covers the top of the position to be cut, and the dust collecting hood 1 is controlled to work. At the same time, the dust collecting hood 1 is started to generate suction, and the smoke generated by the metal cutting operation enters the dust collecting hood 1, passes through the smoke collecting hood 7 and the telescopic dust collecting hood 1, and enters the square main dust collecting duct 2 at the suction port 8, and is sucked away and processed by the dust collector. In this process, the large particles of impurities in the smoke are filtered by the filter screen 9. After the cutting is completed, when the cutting station needs to be changed, the position of the slab fire cutting machine 3 is moved. At this time, the smoke collecting hood 7 and the movable end of the telescopic dust collecting duct 6 are driven by the bracket and the dust collecting hood 1 to move with the slab fire cutting machine 3, so that the telescopic dust collecting duct 6 performs coaxial storage and telescopic movement on the slide rail 5. The pipeline follows while maintaining its sealing. It is suitable for working conditions where the slab fire cutting machine 3 drives the dust collecting hood 1 with a long stroke, a large diameter, and a high regional ambient temperature.

[0065] The sensing range value of the proximity sensor 24 is set in the single chip 15, and the proximity sensor 24 is used to sense the movement process of the smoking pipe 7 and the dust removal hood 1. When they move to the set range, the corresponding electronic lock 25 is activated to trigger the switch. When the smoking pipe 7 and the dust removal hood 1 are continued to be pushed and the telescopic dust removal pipe 6 needs to be folded, the nearest electronic lock 25 is opened to release the two adjacent C-shaped steel plates 61 from the fixed state. At the same time, the other electronic locks 25 remain locked, which can realize the layer-by-layer folding of the C-shaped steel plates 61 on the telescopic dust removal pipe 6. The closing plate 16 contacts and scrapes the inner wall of the slide rail 5 and the bottom wall of the square main dust removal pipe 2 to clean the impurities attached thereto. With the cooperation of the moving block 20 and the torsion spring 22, when the wedge-shaped scraper plate 21 moves from the movable end to the fixed end of the telescopic dust removal tube 6, the blade-shaped bottom end of the C-shaped steel plate 61 is in force contact with the inner wall of the C-shaped steel plate 61, and conversely, the blade-shaped bottom end of the C-shaped steel plate 61 is not subject to force, so that the impurities in the C-shaped steel plate 61 can be scraped into another adjacent C-shaped steel plate 61. When multiple C-shaped steel plates 61 are folded and stored in sequence, the impurities can be continuously scraped off and pushed toward the air suction port 8. In conjunction with the operation of the air blower 17, the scraped impurities are blown from the side to the fixed end of the telescopic dust removal tube 6 and discharged from the air suction port 8, thereby realizing automatic cleaning and discharge of impurities inside the telescopic dust removal tube 6.

[0066] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It is apparent to those skilled in the art that various changes, modifications, substitutions, and variations to these embodiments may be made without departing from the principles and spirit of the present invention, and these changes and modifications still fall within the scope of protection of the present invention.

Claims

1. A telescopic louver dust and smoke removal system, comprising a dust removal hood (1) and a square main dust removal pipe (2), wherein the dust removal hood (1) is installed directly above a slab flame cutting machine (3), the slab flame cutting machine (3) being used to cut a continuous casting slab body (4) and being movable in the longitudinal direction of the continuous casting slab body (4), characterized in that: A slide rail (5) is fixedly connected to the outer wall of the square main dust removal pipe (2) on one side close to the continuous casting billet body (4), and a telescopic dust removal pipe (6) is movably provided on the outer side of the slide rail (5); a smoking pipe (7) is provided on one side of the top of the dust removal cover (1), and the smoking pipe (7) is communicated with the dust removal cover (1); The two ends of the telescopic dust removal pipe (6) are respectively a fixed end and a movable end, and the fixed end and the movable end are respectively connected to the ends of the square main dust removal pipe (2) and the smoking pipe (7) through flanges. The dust removal cover (1) drives the smoking pipe (7) and the movable end of the telescopic dust removal pipe (6) to move with the slab fire cutting machine (3), so that the telescopic dust removal pipe (6) performs a coaxial retractable movement on the slide rail (5); An air suction port (8) is provided on the outer wall of the square main dust removal pipe (2) and at a fixed end position of the telescopic dust removal pipe (6); the telescopic dust removal pipe (6) and the square main dust removal pipe (2) are connected through the air suction port (8); and the dust removal cover (1) and the telescopic dust removal pipe (6) are connected through a smoking pipe (7); The telescopic dust removal tube (6) includes a plurality of C-shaped steel plates (61), and a cleaning assembly is provided on the first C-shaped steel plate (61) at the movable end, which includes a closing plate (16) detachably mounted on one side of the movable end of the telescopic dust removal tube (6) by screws, and a through groove for the slide rail (5) to pass through is reserved on the closing plate (16), and the closing plate (16) is in sliding contact with the inner side wall of the slide rail (5) and the bottom wall of the square main dust removal tube (2), and a blower (17) is embedded in the closing plate (16), and a second motor (18) is fixedly connected to both sides of the closing plate (16); The cleaning assembly further comprises a screw rod (19) rotatably connected to the closing plate (16), the number of which is set to two, and the output shaft of the second motor (18) is transmission-connected to the screw rod (19), the screw rod (19) is arranged in a groove opened on both sides of the inner wall of the C-shaped steel plate (61), and a moving block (20) is threadedly sleeved on the screw rods (19) on both sides, and a wedge-shaped scraping plate (21) is rotatably connected between the two moving blocks (20), and a torsion spring (22) is sleeved between the wedge-shaped scraping plate (21) and the moving block (20).

2. The retractable shutter dust and smoke removal system according to claim 1, characterized in that: The C-shaped steel plate (61) is made of a stainless steel thin plate, and a plurality of C-shaped steel plates (61) are nested in sequence from large to small along the length direction of the square main dust removal pipe (2), and two adjacent C-shaped steel plates (61) are attached to each other and slidably connected. A limiting groove (62) is provided on the inner wall of the C-shaped steel plate (61), and a limiting block (63) matching the limiting groove (62) is fixedly connected to the outer side of the C-shaped steel plate (61). One end of the limiting groove (62) passes through the side wall of the C-shaped steel plate (61) and is open, and the other end is closed, and is used for pulling and stopping between the C-shaped steel plates (61).

3. The telescopic dust and smoke removal system according to claim 2, characterized in that: The slide rail (5) is made of two parallel and axisymmetrically distributed angle steels, which are welded to the outer wall of the square main dust removal pipe (2). The two sides of the opening of the C-shaped steel plate (61) are respectively clamped on the two angle steels, and sealing packings are provided on the contact surfaces.

4. The telescopic dust and smoke removal system according to claim 3, characterized in that: A filter screen (9) is provided between the two angle steels and is made of stainless steel. The filter screen (9) covers the outside of the air inlet (8).

5. The telescopic dust and smoke removal system according to claim 1, characterized in that: The continuous casting slab body (4) is transported by a roller conveyor, and parallel tracks (10) are provided on both sides of the roller conveyor. Brackets (11) are installed at the bottom of both sides of the slab hot cutting machine (3), and the brackets (11) are slidably connected to the tracks (10).

6. The retractable shutter dust and smoke removal system according to claim 5, characterized in that: The bracket (11) is fixedly connected to a first motor (12), and the output shaft of the first motor (12) is connected to a gear (13) in a transmission manner. The outer side of the track (10) is fixedly connected to a rack (14), and the gear (13) and the rack (14) are meshed and transmitted.

7. The retractable shutter dust and smoke removal system according to claim 1, characterized in that: The air suction port (8) is provided on a side of the square main dust removal pipe (2) close to the slab fire cutting machine (3), and is located at the end position of the travel of the slab fire cutting machine (3).

8. The telescopic louver dust and smoke removal system according to claim 1, characterized in that: The output end of the square main dust removal pipe (2) is provided with a dust collector which adopts an induced draft fan.

9. The retractable shutter dust and smoke removal system according to claim 1, characterized in that: The smoking pipe (7) is made of a hard metal pipe, and a limit ring (23) bonded to the C-shaped steel plate (61) is provided on one side of the smoking pipe (7). A proximity sensor (24) is provided on the side of each C-shaped steel plate (61) close to the smoking pipe (7) for sensing the position of the smoking pipe (7) and the dust cover (1). An electronic lock (25) is provided between the ends of two adjacent C-shaped steel plates (61) for connecting and locking the two adjacent C-shaped steel plates (61) after they are fully unfolded.

10. The retractable shutter dust and smoke removal system according to claim 9, characterized in that: It also includes a single chip microcomputer (15), the input end and output end of which are electrically connected to an A / D converter and a D / A converter respectively, a plurality of proximity sensors (24) are electrically connected to the A / D converter, and the electronic lock (25) is electrically connected to the D / A converter.

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