Shutter telescopic dust and smoke removal system

Abstract

The louver telescopic dust and smoke removal system comprises a dust removal cover and a square main dust removal pipe, the dust removal cover is installed over a plate blank flame cutting machine, and the plate blank flame cutting machine is used for cutting a continuous casting blank body and moves in the length direction of the continuous casting blank body; a sliding rail is fixedly connected to the outer wall of the side, close to the continuous casting billet body, of the square main dust removal pipe. The telescopic dust removal pipe is additionally arranged between the square main dust removal pipe and the dust removal cover, the support and the dust removal cover drive the smoke suction pipe and the movable end of the telescopic dust removal pipe to move along with the plate blank flame cutting machine, the telescopic dust removal pipe conducts coaxial storage telescopic movement on the sliding rail, the pipeline is kept closed while following is achieved, and the dust remover generates suction force; smoke dust generated by metal cutting operation enters from the dust removal cover, enters the square main dust removal pipe at the air suction opening through the smoke suction pipe and the telescopic dust removal cover, is sucked away by the dust remover and is suitable for the working conditions that the plate blank flame cutting machine drives the dust removal cover to be long in stroke, large in drift diameter and high in regional environment 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 will produce yellow smoke during online fire cutting, which does not meet the national ultra-low emission requirements. Usually, a fire cutter dust cover is added to the top of the fire cutter, and the existing dust collector is used to extract the yellow smoke generated by the fire cutter. However, due to the wide slab, the running distance of the fire cutter during slab fire cutting reaches more than 11 meters. In order to achieve the suction and dust removal effect, the dust removal pipe has a large diameter, and the corrugated pipe does not meet the use requirements.

[0003] The prior art uses a rectangular steel pipe with an opening of up to 11 meters at the top. The top is covered with a slidable thin steel plate to reduce wild wind. The thin steel plate cover is installed on the dust cover suction pipe of the fire cutter and driven by the fire cutter. However, an 11-meter windshield has great resistance during operation, which the fire cutter's travel motor cannot withstand. If a rubber sheet is used, it cannot move normally due to its low hardness, and its life is short in a high temperature environment for a long time. The above scheme has poor feasibility and high failure rate, and cannot meet production and environmental protection requirements.

[0004] Therefore, it is necessary to develop a telescopic shutter 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 shutter telescopic dust and smoke removal system, comprising a dust removal hood and a square main dust removal pipe, wherein the dust removal hood is installed directly above a slab flame cutting machine, the slab flame cutting machine is used to cut a continuous casting billet body, and the slab flame cutting machine moves in the length direction of the continuous casting billet body, the outer wall of the square main dust removal pipe on one side close to the continuous casting billet body is fixedly connected with a slide rail, and a telescopic dust removal pipe is movably arranged on the outer side of the slide rail, and a smoke pipe is arranged on one side of the top of the dust removal hood, and the smoke pipe is connected to the dust removal hood;

[0008] The two ends of the telescopic dust removal pipe are respectively a fixed end and a movable end, and the fixed end and the movable end are respectively connected to 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 fire cutting machine, so that the telescopic dust removal pipe performs coaxial storage and telescopic movement on the slide rail;

[0009] An air suction port is provided on the outer wall of the square main dust removal pipe and 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, and the dust removal cover is connected to the telescopic dust removal pipe through a smoking pipe.

[0010] The telescopic dust removal pipe includes a plurality of C-shaped steel plates, and a cleaning assembly is arranged on the first C-shaped steel plate at the movable end, which includes a closing plate detachably mounted on one side of the movable end of the telescopic dust removal pipe by screws, and a through groove 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 pipe, and a blower is embedded in the closing plate, and a second motor is fixedly connected to the two 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 moving blocks are threadedly sleeved on the screw rods on both sides, and a wedge-shaped scraper plate is rotatably connected between the two moving blocks, and a torsion spring is sleeved between the wedge-shaped scraper 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 billet body is conveyed by a roller conveyor, and parallel tracks are provided on both sides of the roller conveyor, and 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 a gear is transmission-connected to the output shaft of the first motor, 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 travel 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 arranged on one side of the smoking pipe. A proximity sensor is arranged 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 arranged 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 smoking pipe and the movable end of the telescopic dust removal pipe to move with the slab fire cutting machine, so that the telescopic dust removal pipe performs coaxial storage and telescopic movement on the slide rail, and the pipeline achieves following 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, enters the square main dust removal pipe at the air suction port through the smoking pipe and the telescopic dust removal hood, and is sucked away by the dust collector. It is suitable for the working conditions where the slab fire cutting machine drives the dust removal hood with a long stroke, a large diameter, and a high regional ambient temperature. Compared with the prior art, 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, in 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 thereto. 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 in the direction of 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, so as to realize 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 inner side 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 shutter 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 A schematic diagram of the BB cross-section structure of the structure shown;

[0029] Figure 5 It is 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 It is a schematic diagram of the combined structure of the square main dust removal pipe, the slide rail, the telescopic dust removal pipe and the cleaning assembly in the present invention;

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

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

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

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

[0036] Fig.12 It 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 billet body-4; slide rail-5; telescopic dust removal pipe-6; smoking 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; air blower-17; second motor-18; screw rod-19; moving block-20; wedge-shaped scraper plate-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 in conjunction with 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 part", "lower part" and the like indicate the orientation or positional relationship based on the orientation or positional 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" and the like do not indicate the importance of the components, and therefore cannot be understood as limiting 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.

[0042] like Figure 1-11 As shown, a shutter telescopic dust and fume removal system comprises 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 is used to cut a continuous casting billet body 4, and the slab flame cutting machine 3 moves in the length direction of the continuous casting billet body 4; the yellow smoke generated when the slab flame cutting machine 3 cuts the continuous casting billet body 4 rises, and is covered by the dust removal hood 1 on the top thereof, and a negative pressure is formed under the suction force of its output port, similar to a range hood, sucking away the yellow smoke, and the dust removal hood 1 always moves with the slab flame cutting machine 3 to cover the cutting area;

[0043] A slide rail 5 is fixedly connected to the outer wall of the square main dust removal pipe 2 near the continuous casting billet body 4, and a telescopic dust removal pipe 6 is movably arranged outside the slide rail 5. A smoking pipe 7 is arranged 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, 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 storage and telescopic movement on the slide rail 5, which is similar to the folding storage structure of the telescopic rod of an umbrella, so as to achieve the following effect of the pipeline and maintain the closedness of the pipeline;

[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, and a cleaning assembly is provided on the first C-shaped steel plate 61 at the movable end, which is used to clean impurities attached 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 component in the present application, it 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 sealing gasket is used to seal the movable end of the telescopic dust removal tube 6 to ensure that the closing plate 16 can slide smoothly on the slide rail 5 to avoid jamming and interference, 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. 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 removal 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 removal tube 6 and discharged from the air suction port 8, so as to facilitate cleaning the inside of the telescopic dust removal tube 6;

[0048] The cleaning assembly also includes a screw rod 19 rotatably connected to the closing plate 16, and second motors 18 are fixedly connected on both sides of the closing plate 16. The number of the second motors 18 is the same as that of the screw rods 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 grooves provided on both sides of the inner wall of the C-shaped steel plate 61. Moving blocks 20 are 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. 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 penetrates 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 the C-shaped steel plates 61 to achieve the purpose of free extension 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, such as welding a limiting block on each of the upper, lower, left and right 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 scraper plate 21 is as follows: Fig.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 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 tube 2, and two adjacent C-shaped steel plates 61 are attached to each other and slidably connected, that is, when a plurality of C-shaped steel plates 61 are folded and stored in sequence, impurities can be continuously scraped off and sent to the direction of the air intake port 8, thereby achieving the cleaning and discharge of impurities.

[0051] The above structure cooperates to absorb the smoke generated by the slab fire cutting machine 3 cutting the continuous casting billet body 4 and recycles it. It can be applied to the working conditions where the slab fire 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 the present 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 unfolded, the maximum length of the telescopic dust removal tube 6 is 11000mm, and the length of the slide rail 5 matched therewith is set to 11.5m.

[0053] Furthermore, in the above technical scheme, 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 arranged 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 arranged between the two angle steels and is made of stainless steel. The filter screen 9 covers the outer side 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, the hidden danger of blockage on the inner side of the telescopic dust removal pipe 6 can also be solved.

[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, and 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 the 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 outer side 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 the top of it 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 provided on one 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 enters from the dust hood 1, passes through the smoking pipe 7 and the telescopic dust hood 1, and enters the square main dust removal pipe 2, and is sucked away and processed by the dust collector.

[0059] Furthermore, in the above technical solution, if Figure 4 and Fig.12 As shown, the smoking pipe 7 is made of a hard metal pipe, and a limit retaining 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 retaining 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 one side of each C-shaped steel plate 61 close to the smoking pipe 7 for sensing the positions 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.

[0061] Further, in the above technical solution, the dust and smoke removal system also includes a single chip microcomputer 15, whose input end and output end 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] Based on the working mode of the intelligent control system realized by the cooperation of the above-mentioned components, 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. While continuing to push the smoking pipe 7 and the dust hood 1, when the telescopic dust removal tube 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 plate 61 on the telescopic dust removal tube 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 seal, to prevent wild wind from entering.

[0064] When the present invention is in use, the slab fire cutting machine 3 is moved to the position to be cut on the continuous casting billet body 4, at which time the dust collecting hood 1 follows and moves and covers the top of the position to be cut, the slab fire cutting machine 3 is controlled to work, and at the same time the dust collector is started to generate suction, the smoke generated by the metal cutting operation enters from the dust collecting hood 1, passes through the smoking pipe 7 and the telescopic dust collecting hood 1, and enters the square main dust collecting pipe 2 at the air suction port 8, and is sucked away and processed by the dust collector, and in this process, the large particles of impurities in the smoke are filtered by the filter screen 9, and after the cutting is completed, when the cutting station needs to be changed, the position of the slab fire cutting machine 3 is moved, and at this time, the smoking pipe 7 and the movable end of the telescopic dust collecting pipe 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 pipe 6 performs a coaxial storage and telescopic movement on the slide rail 5, and the pipeline is realized while maintaining its closedness, which is suitable for the 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 computer 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 trigger switch is activated. When the smoking pipe 7 and the dust removal 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 locked, so that the C-shaped steel plates 61 on the telescopic dust removal pipe 6 can be folded layer by layer. 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 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 in the direction of the air suction port 8. In conjunction with the operation of the air supply fan 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. 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 shutter telescopic 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) is used to cut a continuous casting slab body (4), and the slab flame cutting machine (3) is movable in the length direction of the continuous casting slab body (4), characterized in that: 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 arranged outside the slide rail (5); a smoking pipe (7) is arranged 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 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 along with the slab fire cutting machine (3), so that the telescopic dust removal pipe (6) performs a coaxial storage and telescopic 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 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); The telescopic dust removal pipe (6) comprises a plurality of C-shaped steel plates (61), and a cleaning assembly is arranged on the first C-shaped steel plate (61) at the movable end, which comprises a closing plate (16) detachably mounted on one side of the movable end of the telescopic dust removal pipe (6) by means of screws, and a through groove is reserved on the closing plate (16) for the slide rail (5) to pass through, 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 pipe (2), and a blower (17) is embedded on the closing plate (16), and a second motor (18) is fixedly connected to both sides of the closing plate (16); The cleaning assembly also includes 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 grooves opened on both sides of the inner wall of the C-shaped steel plate (61), and moving blocks (20) are 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 telescopic 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 mutually abutted 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 in an open shape, and the other end thereof is in a closed shape, and is used for pulling and stopping between the C-shaped steel plates (61).

3. The telescopic louver dust and smoke removal system according to claim 2, characterized in that: 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 arranged on the contact surfaces.

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

5. The telescopic shutter 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 arranged 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 shutter telescopic 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 transmission-connected to a gear (13); the outer side of the track (10) is fixedly connected to a rack (14), and the gear (13) and the rack (14) are meshed for transmission.

7. The telescopic shutter dust and smoke removal system according to claim 1, characterized in that: The air suction port (8) is arranged 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 shutter telescopic 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 arranged on one side of the smoking pipe (7). A proximity sensor (24) is arranged 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 arranged 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 shutter telescopic dust and smoke removal system according to claim 9, characterized in that: It also includes a single chip microcomputer (15), whose input end and output end are respectively electrically connected to an A / D converter and a D / A converter, a plurality of proximity sensors (24) are all electrically connected to the A / D converter, and the electronic lock (25) is electrically connected to the D / A converter.

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