Steel-making furnace capable of efficiently treating waste gas

Abstract

The invention discloses an efficient waste gas treatment steelmaking furnace, which relates to the technical field of steelmaking equipment and comprises a furnace body, a connecting pipe is fixedly connected to the outside of the furnace body, a filtering mechanism for removing dust in waste gas is arranged at one end, far away from the furnace body, of the connecting pipe, and a shaking mechanism for cleaning attached dust is arranged in the filtering mechanism. The filtering mechanism comprises a cylindrical shell, the top of the shell is rotationally connected with an upper cover plate, the bottom of the shell is rotationally connected with a lower cover plate, and by arranging the filtering mechanism and utilizing the two filtering bags which are arranged respectively, when one filtering bag system conducts filtering, the other filtering bag system can be in a standby state or conduct necessary cleaning and maintenance; by alternately using the two sets of filter bags, each set of filter bag has an opportunity to be fully rest and recovered, so that the fatigue damage caused by continuous work is reduced, in addition, the alternate use is also beneficial to balancing the working load of the two sets of filter bags, and the early failure caused by excessive use of a single filter bag is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of steelmaking equipment, in particular to a steelmaking furnace for efficient waste gas treatment. Background Art

[0002] Steel is obtained by melting pig iron in a steelmaking furnace according to a certain process. A large amount of waste gas is generated during the steelmaking process. These waste gases may contain harmful substances such as particulate matter, sulfur dioxide, nitrogen oxides, etc., which pollute the environment. Therefore, an efficient waste gas treatment system is crucial to reduce the emission of these pollutants.

[0003] Regarding the particulate matter generated by steelmaking, when handling waste particulate matter, during long-term use, the waste particulate matter will gradually accumulate on the filter component of the purification device to form a dust layer, which will cause the filter component to be blocked, thereby reducing the effect of exhaust gas treatment. When a large amount of particulate matter accumulates on the lower surface of the filter component, the entire purification device must be disassembled for cleaning. This process is not only time-consuming and labor-intensive, but also reduces the working efficiency of the purification equipment.

[0004] Therefore, the present invention proposes a steelmaking furnace with high efficiency in treating waste gas to make up for and improve the deficiencies of the prior art. Summary of the invention

[0005] In view of the above problems, the invention provides a steelmaking furnace with high efficiency in treating waste gas, which can effectively solve the problem of time-consuming cleaning of filtering equipment in the prior art. In order to achieve the above objectives, the embodiment of the present application provides the following technical solutions:

[0006] The present invention discloses a steelmaking furnace for efficiently treating waste gas, comprising a furnace body, a connecting pipe fixedly connected to the top of the furnace body, a filtering mechanism for removing dust in the waste gas is arranged at one end of the connecting pipe away from the furnace body, and a shaking mechanism for cleaning attached dust is arranged inside the filtering mechanism;

[0007] The filtering mechanism includes a cylindrical shell, the top of the shell is rotatably connected to an upper cover plate, the bottom of the shell is rotatably connected to a lower cover plate, a partition is fixedly connected between the upper cover plate and the lower cover plate, both ends of the partition plate are in contact with the inner wall of the shell, the upper cover plate and the lower cover plate are symmetrically provided with accommodating openings, two filter bags are arranged between the upper cover plate and the lower cover plate, a top cover is fixedly connected to the top of the shell, the top cover is provided with a discharge outlet, an exhaust pipe is fixedly connected to the outside of the shell, a switching component for driving the two filter bags to rotate inside the shell is arranged on the outside of the shell, and a limiting component for preventing displacement of the filter bags is arranged inside the partition plate.

[0008] Furthermore, the filtering mechanism also includes a plurality of connecting plates fixedly connected to the outer wall of the filter bag, the plurality of connecting plates are arranged in a ring shape along the outside of the filter bag, a top plate is fixedly connected to the top of the connecting plate, the top plate and the accommodating opening of the upper cover plate match each other, a support ring is fixedly connected to the bottom of the connecting plate, the inside of the support ring is fixedly connected to the opening of the filter bag, and the support ring and the accommodating opening of the lower cover plate match each other.

[0009] Furthermore, the switching assembly includes a rotating shaft fixedly connected to the center line of the partition, the top of the rotating shaft penetrates upward to the top of the top cover, a connecting rod is vertically slidably connected in the cavity at the top of the rotating shaft, a slider is fixedly connected to the outside of the connecting rod, a first vertical groove and a spiral groove are opened on the inner wall of the rotating shaft cavity, and the bottom of the first vertical groove is connected to the top of the spiral groove, a second vertical groove is also opened on the inner wall of the rotating shaft cavity, the bottom of the second vertical groove is connected to the bottom of the spiral groove, and the slider slides in the first vertical groove and the spiral groove.

[0010] Furthermore, the outside of the connecting rod is fixedly connected to a cross bar, both ends of the cross bar are slidably connected to vertical bars, the bottom of the vertical bar is fixedly connected to the top of the top cover, the top of the vertical bar is fixedly connected to a limiting block, the outside of the vertical rod is sleeved with a return spring, the return spring is located on the outside of the vertical rod between the top cover and the cross bar, the top of the top cover is fixedly connected to a hydraulic cylinder, and the output end of the hydraulic cylinder is fixedly connected to the top of the connecting rod.

[0011] Furthermore, the limiting assembly includes telescopic blocks symmetrically and slidably connected on both sides of the partition, a sealing strip is fixedly connected to the side of the two telescopic blocks facing the interior of the shell, and a slot for accommodating the telescopic blocks is opened on the inner wall of the shell, and the two telescopic blocks are rotatably connected to the side close to each other with a connecting rod.

[0012] Furthermore, the two connecting rods are rotatably connected to a fixed block at one end close to each other, and a sliding rod is fixedly connected to the side of the fixed block. The sliding rod is slidably connected inside the rotating shaft, and the top of the sliding rod is hinged to the bottom of the connecting rod through a hinge seat, and the bottom of the sliding rod extends downward to the bottom of the lower cover plate.

[0013] Furthermore, the shaking mechanism includes two groups of rotating rods arranged on both sides of the partition, each group of rotating rods has two rotating rods, each of the rotating rods passes through the upper cover plate and the lower cover plate, and each rotating rod is fixedly connected to a swing bar on the outside, and each rotating rod is fixedly connected to a first friction plate at the bottom, and an ejection assembly for removing the filter bag from the inside of the shell is provided at the top of the rotating rod.

[0014] Furthermore, the shaking mechanism also includes a funnel and a docking head respectively engaged with the accommodating opening at the bottom of the lower cover plate, the bottom of the funnel is fixedly connected to a collecting tank, the docking head is fixedly connected to an end of the connecting pipe away from the furnace body, the funnel and the docking head are fixedly connected by a bracket, the middle part of the bracket is fixedly connected to the bottom of the slide rod, the outside of the funnel is symmetrically fixedly connected to a motor, each motor output end is fixedly connected to a second friction disk, and the second friction disk matches the first friction disk.

[0015] Furthermore, the ejection assembly includes a first gear ring rotatably connected to the top of the upper cover plate, the inner wall of the first gear ring is provided with an internal thread, the outer sides of the multiple connecting plates are provided with external threads, and the first gear ring and the multiple connecting plates are connected by matching threads of the internal thread and the external thread.

[0016] Beneficial effects:

[0017] 1. This device is equipped with a filtering mechanism and uses two separately set filter bags. When one set of filter bag system is filtering, the other set can be in standby state or undergo necessary cleaning and maintenance. By alternately using the two sets of filter bags, each set of filter bags can have a chance to get sufficient rest and recovery. Alternating use also helps to balance the workload of the two sets of filter bags and avoid premature failure of a single filter bag due to excessive use.

[0018] 2. This device is equipped with a switching component, which can simultaneously drive the collection tank and the connecting pipe to detach from the bottom of the lower cover while driving the two filter bags to rotate. The synchronous detachment design can greatly simplify the maintenance process. The operator only needs to perform one action to put the filter bag, collection tank and related pipes in an operable position, which simplifies the maintenance and cleaning procedures of the filter bag, reduces the possibility of misoperation, and reduces the workload of maintenance personnel.

[0019] 3. This device is provided with a limit position assembly. After the two filter bags are rotated, the telescopic block can be ejected outward so that the telescopic block contacts the notch of the shell, which can effectively reduce the tiny gap that may appear between the partition and the shell, thereby reducing the risk of leakage and enhancing the sealing performance of the entire filtration system.

[0020] 4. This device is equipped with a shaking mechanism. After the filter bag with dust attached is rotated, the motor drives the swing bar to hit the filter bag, so that the filter bag shakes to shake off the attached dust. This is more efficient than simply relying on gravity or airflow to remove dust, reduces manual intervention, improves the safety and convenience of operation, reduces labor intensity, and avoids workers from direct contact with possible harmful dust.

[0021] 5. This device is provided with an ejection assembly. When the filter bag needs to be replaced, the reversely rotating motor drives the filter bag to move upward from the discharge port through the first gear ring, thereby removing the filter bag from the shell. Compared with manual removal of the filter bag, the motor drive can realize a rapid filter bag replacement process and reduce manual intervention, which can greatly reduce the time required for maintenance. At the same time, the exhaust gas temperature generated in the steelmaking process may be high, and the motor drive replacement of the filter bag can prevent workers from direct contact with the heat source. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the prior art descriptions. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 It is a three-dimensional structural diagram of the present invention from a first viewing angle.

[0024] Figure 2 It is a cross-sectional view of the filtering mechanism of the present invention.

[0025] Figure 3 It is a schematic diagram of the connection between the upper cover plate, the partition plate and the lower cover plate in the present invention.

[0026] Figure 4 It is a three-dimensional structural diagram of the switching component in the present invention.

[0027] Figure 5 It is a longitudinal cross-sectional view of the partition in the present invention.

[0028] Figure 6 It is a three-dimensional structural diagram of the shaking mechanism in the present invention.

[0029] Figure 7 It is a cross-sectional view of the slider, the first vertical groove and the spiral groove in the present invention.

[0030] Figure 8 It is a three-dimensional structural diagram of the ejection assembly in the present invention.

[0031] Fig. 9 It is a schematic diagram of the connection between the first gear ring and the connecting plate in the present invention.

[0032] Fig.10 Exploded view of the shaking mechanism in the invention

[0033] The numbers in the figure represent:

[0034] 10. furnace body; 20. connecting pipe; 30. filtering mechanism; 301. shell; 302. upper cover plate; 303. lower cover plate; 304. partition plate; 305. filter bag; 306. support ring; 307. connecting plate; 308. top plate; 309. receiving opening; 40. top cover; 500. switching assembly; 501. rotating shaft; 502. connecting rod; 503. hydraulic cylinder; 504. cross bar; 505. vertical rod; 506. reset spring; 507. stop block; 508. first vertical groove; 509. spiral groove; 510. slider; 511. second vertical groove ;60, limit assembly;601, telescopic block;602, connecting rod;603, fixed block;604, sliding rod;70, shaking mechanism;701, rotating rod;702, swing bar;703, first friction disc;704, second friction disc;705, motor;706, collecting tank;707, funnel;708, bracket;709, docking head;80, ejection assembly;801, first gear ring;802, second gear ring;803, ratchet;804, pawl;805, external thread;806, internal thread;90, discharge port;100, exhaust pipe. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0036] The present invention will be further described below in conjunction with the embodiments.

[0037] See also Figures 1 to 10 A steelmaking furnace for efficiently treating waste gas in this embodiment includes a furnace body 10, a connecting pipe 20 is fixedly connected to the top of the furnace body 10, a filtering mechanism 30 for removing dust in the waste gas is arranged at one end of the connecting pipe 20 away from the furnace body 10, and a shaking mechanism 70 for cleaning attached dust is arranged inside the filtering mechanism 30.

[0038] See also Figure 1 , Figure 2 and Figure 3The filtering mechanism 30 includes a cylindrical shell 301, an upper cover plate 302 is rotatably connected to the top of the shell 301, a lower cover plate 303 is rotatably connected to the bottom of the shell 301, a partition plate 304 is fixedly connected between the upper cover plate 302 and the lower cover plate 303, both ends of the partition plate 304 are in contact with the inner wall of the shell 301, the upper cover plate 302 and the lower cover plate 303 are symmetrically provided with accommodating openings 309, two filter bags 305 are arranged between the upper cover plate 302 and the lower cover plate 303, a top cover 40 is fixedly connected to the top of the shell 301, the top cover 40 is provided with a discharge port 90, an exhaust pipe 100 is fixedly connected to the outside of the shell 301, a switching component 500 for driving the two filter bags 305 to rotate inside the shell 301 is arranged outside the shell 301, and a limiting component 60 for preventing the filter bags 305 from shifting is arranged inside the partition plate 304. The housing 301 is divided into two parts by a partition 304 , wherein the filter bag 305 on one side can be used to process the exhaust gas transmitted from the furnace body 10 , and the filter bag 305 on the other side can be cleaned.

[0039] See also Figure 1 , Figure 2 , Figure 8 and Fig. 9 The filtering mechanism 30 also includes a plurality of connecting plates 307 fixedly connected to the outer wall of the filter bag 305. The plurality of connecting plates 307 are arranged in a ring shape along the outside of the filter bag 305. A top plate 308 is fixedly connected to the top of the connecting plate 307. The top plate 308 matches the receiving opening 309 of the upper cover plate 302. A supporting ring 306 is fixedly connected to the bottom of the connecting plate 307. The inside of the supporting ring 306 is fixedly connected to the opening of the filter bag 305. The supporting ring 306 matches the receiving opening 309 of the lower cover plate 303. The filter bag 305 can be made of cloth or felt woven from synthetic fibers, natural fibers or glass fibers, and the cloth or felt can be sewn into a cylindrical shape as needed. The opening of the filter bag 305 is fixedly connected to the support ring 306, the bottom of the filter bag 305 is fixedly connected to the top plate 308, the outside of the filter bag 305 is fixedly connected to the connecting plate 307, and the filter bag 305 is inserted into the accommodating opening 309 of the lower cover plate 303 from the bag opening downward in the shell 301 through the accommodating opening 309 of the upper cover plate 302.

[0040] During specific operation, the exhaust gas generated in the furnace body 10 is cooled by the exhaust equipment and then transported to the shell 301 through the connecting pipe 20. At this time, the exhaust gas enters the filter bag 305 from the bottom of the shell 301, and the dust in the exhaust gas is blocked inside the filter bag 305. The treated exhaust gas passes through the filter bag 305 and enters the shell 301. Thereafter, the treated exhaust gas is discharged from the exhaust pipe 100. According to the treatment process, the gas discharged from the exhaust pipe 100 can be connected to the subsequent treatment equipment for the next stage of treatment.

[0041] See also Figure 1 , Figure 4 , Figure 5 and Figure 7 The switching assembly 500 includes a rotating shaft 501 fixedly connected to the center line of the partition 304, the top of the rotating shaft 501 penetrates upward to the top of the top cover 40, a connecting rod 502 is vertically slidably connected in the cavity at the top of the rotating shaft 501, a slider 510 is fixedly connected to the outside of the connecting rod 502, a first vertical groove 508 and a spiral groove 509 are opened on the inner wall of the cavity of the rotating shaft 501, and the bottom of the first vertical groove 508 is connected to the top of the spiral groove 509, a second vertical groove 511 is also opened on the inner wall of the cavity of the rotating shaft 501, the bottom of the second vertical groove 511 is connected to the bottom of the spiral groove 509, and the slider 510 slides in the first vertical groove 508 and the spiral groove 509. The spiral angle of the spiral groove 509 inside the cavity of the rotating shaft 501 is 180 degrees.

[0042] The connecting rod 502 is fixedly connected to a cross bar 504 on the outside, and both ends of the cross bar 504 are slidably connected to vertical rods 505. The bottom of the vertical rod 505 is fixedly connected to the top of the top cover 40, and the top of the vertical rod 505 is fixedly connected to a limiting block 507. A return spring 506 is sleeved on the outside of the vertical rod 505. The return spring 506 is located on the outside of the vertical rod 505 between the top cover 40 and the cross bar 504. A hydraulic cylinder 503 is fixedly connected to the top of the top cover 40, and the output end of the hydraulic cylinder 503 is fixedly connected to the top of the connecting rod 502.

[0043] During specific operation, when the two filter bags 305 need to be rotated, the hydraulic cylinder 503 pushes the connecting rod 502 downward. When the connecting rod 502 moves downward, the connecting rod 502 drives the slider 510 to slide down along the first vertical groove 508. At this time, the bottom of the connecting rod 502 pushes the limit assembly 60 to unlock, and then the slider 510 enters the spiral groove 509. At this time, the slider 510 moves in the spiral groove 509, and the slider 510 pushes the partition 304 to rotate in the shell 301. When the slider 510 moves to the bottom of the spiral groove 509, the partition 304 can rotate one hundred and eighty degrees. At this time, the positions of the two filter bags 305 are exchanged with each other, and then the slider 510 enters the second vertical groove 511 from the bottom of the spiral groove 509. The hydraulic cylinder 503 drives the connecting rod 502 upward to move, and the new filter bag 305 can continue to filter the exhaust gas. The filter bag 305 with dust attached inside can handle the attached dust under the operation of the shaking mechanism 70.

[0044] When the connecting rod 502 descends, the connecting rod 502 drives the cross bar 504 to move downward along the vertical rod 505 , and at the same time the cross bar 504 compresses and accumulates force on the return spring 506 , and the compressed return spring 506 is used to provide auxiliary power for the limit assembly 60 to resist inside the shell 301 .

[0045] See also Figure 5The limiting assembly 60 includes telescopic blocks 601 symmetrically slidably connected to both sides of the partition 304, a sealing strip is fixedly connected to one side of the two telescopic blocks 601 facing the inside of the shell 301, and a slot for accommodating the telescopic blocks 601 is opened on the inner wall of the shell 301, and a connecting rod 602 is rotatably connected to one side of the two telescopic blocks 601 close to each other.

[0046] The two connecting rods 602 are rotatably connected to a fixed block 603 at one end close to each other, and a sliding rod 604 is fixedly connected to the side of the fixed block 603. The sliding rod 604 is slidably connected inside the rotating shaft 501, and the top of the sliding rod 604 is hinged to the bottom of the connecting rod 502 through a hinge seat, and the bottom of the sliding rod 604 extends downward to the bottom of the lower cover plate 303.

[0047] During specific operation, when the hydraulic cylinder 503 pushes the connecting rod 502 downward, and the connecting rod 502 drives the slider 510 to slide down along the first vertical groove 508, the bottom of the connecting rod 502 drives the slide bar 604 to move downward through the hinge seat, and the downward sliding slide bar 604 drives the telescopic block 601 to move toward the inside of the partition 304 through the connecting rod 602, so that the telescopic block 601 is disengaged from the groove inside the shell 301, and then the slider 510 enters the spiral groove 509 to drive the partition 304 to rotate.

[0048] See also Figure 1 , Figure 2 , Figure 3 , Figure 6 , Figure 8 and Fig.10 The shaking mechanism 70 includes two groups of rotating rods 701 arranged on both sides of the partition 304, each group of rotating rods 701 has two rotating rods 701, each rotating rod 701 passes through the upper cover plate 302 and the lower cover plate 303, and a swing bar 702 is fixedly connected to the outside of each rotating rod 701, a first friction disk 703 is fixedly connected to the bottom of each rotating rod 701, and an ejection assembly 80 for removing the filter bag 305 from the inside of the shell 301 is arranged on the top of the rotating rod 701.

[0049] The shaking mechanism 70 also includes a funnel 707 and a docking head 709 respectively connected to the receiving opening 309 at the bottom of the lower cover plate 303. The bottom of the funnel 707 is fixedly connected to a collecting tank 706. The docking head 709 is fixedly connected to the end of the connecting pipe 20 away from the furnace body 10. The funnel 707 and the docking head 709 are fixedly connected through a bracket 708. The middle part of the bracket 708 is fixedly connected to the bottom of the slide bar 604. The outside of the funnel 707 is symmetrically fixedly connected to a motor 705. The output end of each motor 705 is fixedly connected to a second friction disk 704, and the second friction disk 704 matches the first friction disk 703. An electrostatic adsorption device can be set inside the collecting tank 706 to absorb the falling dust.

[0050] In specific operation, when the hydraulic cylinder 503 pushes the connecting rod 502 downward, the connecting rod 502 pushes the bracket 708 downward through the sliding rod 604 to move downward synchronously. At this time, the bracket 708 simultaneously drives the funnel 707 and the docking head 709 to disengage from the bottom of the lower cover plate 303, so that before the lower cover plate 303 rotates, the funnel 707 and the docking head 709 are disengaged from the lower cover plate 303, so that the funnel 707 and the docking head 709 will not block the rotation of the lower cover plate 303, and then the slider 510 enters the spiral groove 509. During the movement of the spiral groove 509, the slider 510 pushes the partition 304 to rotate in the shell 301. When the slider 510 moves to the bottom of the spiral groove 509 When the lower cover plate 303 is lowered, the partition 304 can rotate 180 degrees. At this time, the positions of the two filter bags 305 are exchanged. Then, the slider 510 enters the second vertical groove 511 from the bottom of the spiral groove 509, and the hydraulic cylinder 503 drives the connecting rod 502 to move upward. When the hydraulic cylinder 503 drives the connecting rod 502 upward, it drives the bracket 708 to move upward synchronously through the sliding rod 604. The upward bracket 708 simultaneously drives the funnel 707 and the docking joint 709 to contact the bottom of the lower cover plate 303. Finally, the exhaust gas inside the furnace body 10 enters the new filter bag 305 from the docking joint 709 through the connecting pipe 20. At the same time, the opening of another filter bag 305 that needs to deal with attached dust has been connected to the collection tank 706 through the funnel 707.

[0051] When the bracket 708 moves downward, the second friction disk 704 at the output end of the motor 705 is disengaged from the first friction disk 703 at the bottom of the rotating rod 701. After that, the two filter bags 305 rotate 180 degrees to exchange positions with each other. When the bracket 708 moves upward, the second friction disk 704 at the output end of the motor 705 is in contact with the first friction disk 703 at the bottom of the rotating rod 701 again. Finally, the motor 705 starts to drive the rotating rod 701 to rotate through the second friction disk 704 and the first friction disk 703. The rotating rotating rod 701 drives the swing bar 702 to whip the outside of the filter bag 305, causing the filter bag 305 to shake, thereby causing the dust attached to the inside of the filter bag 305 to fall off, and the falling dust is collected by the adsorption of the collection tank 706.

[0052] See also Figure 8 and Fig. 9 The ejection assembly 80 includes a first gear ring 801 rotatably connected to the top of the upper cover plate 302, an inner wall of the first gear ring 801 is provided with an internal thread 806, and outer sides of multiple connecting plates 307 are provided with external threads 805, and the first gear ring 801 and the multiple connecting plates 307 are connected by matching threads of the internal thread 806 and the external thread 805.

[0053] The ejection assembly 80 also includes a pawl 804 rotatably connected to the top of the rotating rod 701. The top of the upper cover plate 302 is also rotatably connected to a second gear ring 802, which meshes with the first gear ring 801. The second gear ring 802 has a plurality of ratchets 803 fixedly connected in a ring shape inside, which mesh with the pawl 804.

[0054] During specific operation, when the cleaned filter bag 305 is replaced, the motor 705 rotates in the opposite direction. At this time, the motor 705 drives the rotating rod 701 to rotate in the opposite direction synchronously. The rotating rod 701 rotating in the opposite direction makes the pawl 804 engage with the ratchet 803, so that the rotating rod 701 synchronously drives the second gear ring 802 to rotate, and the rotating second gear ring 802 synchronously drives the first gear ring 801 to rotate on the top of the upper cover plate 302. The first gear ring 801 is threadedly connected to the connecting plate 307. Therefore, when the first gear ring 801 rotates, it drives the connecting plate 307 to move upward. The upward moving connecting plate 307 drives the filter bag 305 to pass through the top cover 40 from the discharge port 90. Finally, the filter bag 305 and the connecting plate 307 can be moved and taken out, and then the new filter bag 305 and the connecting plate 307 can be replaced.

[0055] Working principle:

[0056] The exhaust gas in the furnace body 10 enters the filter bag 305 in the shell 301 from the connecting pipe 20 for filtration. When the filter bag 305 needs to be cleaned, the two filter bags 305 are driven to rotate 180 degrees through the switching component 500, so that the two filter bags 305 exchange positions with each other, and then the positions of the two filter bags 305 are fixed by the limiting component 60. Finally, the filter bag 305 that needs to be cleaned is cleaned by the shaking mechanism 70. When the filter bag 305 needs to be replaced after cleaning, the filter bag 305 is ejected from the top cover 40 on the top of the shell 301 by the ejection component 80 for replacement.

[0057] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A steelmaking furnace with high efficiency in treating waste gas, characterized in that: The invention comprises a furnace body (10), wherein a connecting pipe (20) is fixedly connected to the top of the furnace body (10), a filtering mechanism (30) for removing dust from exhaust gas is arranged at one end of the connecting pipe (20) away from the furnace body (10), and a shaking mechanism (70) for cleaning attached dust is arranged inside the filtering mechanism (30); The filtering mechanism (30) comprises a cylindrical shell (301), the top of the shell (301) is rotatably connected to an upper cover plate (302), the bottom of the shell (301) is rotatably connected to a lower cover plate (303), a partition plate (304) is fixedly connected between the upper cover plate (302) and the lower cover plate (303), both ends of the partition plate (304) are in contact with the inner wall of the shell (301), the upper cover plate (302) and the lower cover plate (303) are symmetrically provided with a receiving opening (309), and the upper cover plate (302) is fixedly connected to the lower cover plate (303). ) and a lower cover plate (303), two filter bags (305) are arranged between the shell (301), a top cover (40) is fixedly connected to the top of the shell (301), the top cover (40) is provided with an exhaust port (90), an exhaust pipe (100) is fixedly connected to the outside of the shell (301), a switching component (500) is arranged on the outside of the shell (301) for driving the two filter bags (305) to rotate inside the shell (301), and a limiting component (60) is arranged inside the partition plate (304) for preventing the filter bags (305) from shifting.

2. The steelmaking furnace for efficient waste gas treatment according to claim 1, characterized in that: The filtering mechanism (30) further comprises a plurality of connecting plates (307) fixedly connected to the outer wall of the filter bag (305); the plurality of connecting plates (307) are arranged in a ring shape along the outside of the filter bag (305); a top plate (308) is fixedly connected to the top of the connecting plate (307); the top plate (308) matches the receiving opening (309) of the upper cover plate (302); a supporting ring (306) is fixedly connected to the bottom of the connecting plate (307); the interior of the supporting ring (306) is fixedly connected to the opening of the filter bag (305); the supporting ring (306) matches the receiving opening (309) of the lower cover plate (303).

3. The steelmaking furnace for efficient waste gas treatment according to claim 1, characterized in that: The switching assembly (500) includes a rotating shaft (501) fixedly connected to the center line of the partition (304), the top of the rotating shaft (501) extends upward to the top of the top cover (40), a connecting rod (502) is vertically slidably connected in the cavity at the top of the rotating shaft (501), a sliding block (510) is fixedly connected to the outside of the connecting rod (502), a first vertical groove (508) and a spiral groove (509) are provided on the inner wall of the cavity of the rotating shaft (501), and the bottom of the first vertical groove (508) is connected to the top of the spiral groove (509), a second vertical groove (511) is provided on the inner wall of the cavity of the rotating shaft (501), and the bottom of the second vertical groove (511) is connected to the bottom of the spiral groove (509), and the sliding block (510) slides in the first vertical groove (508) and the spiral groove (509).

4. The steelmaking furnace for efficient waste gas treatment according to claim 3, characterized in that: The connecting rod (502) is fixedly connected to a cross rod (504) on the outside, and both ends of the cross rod (504) are slidably connected to vertical rods (505). The bottom of the vertical rod (505) is fixedly connected to the top of the top cover (40), and the top of the vertical rod (505) is fixedly connected to a limiting block (507). The vertical rod (505) is sleeved with a return spring (506) on the outside, and the return spring (506) is located on the outside of the vertical rod (505) between the top cover (40) and the cross rod (504). The top of the top cover (40) is fixedly connected to a hydraulic cylinder (503), and the output end of the hydraulic cylinder (503) is fixedly connected to the top of the connecting rod (502).

5. The steelmaking furnace for efficient waste gas treatment according to claim 1, characterized in that: The limiting assembly (60) includes telescopic blocks (601) symmetrically slidably connected to both sides of the partition (304); a sealing strip is fixedly connected to one side of the two telescopic blocks (601) facing the inside of the shell (301); and a groove for accommodating the telescopic blocks (601) is provided on the inner wall of the shell (301); and a connecting rod (602) is rotatably connected to one side of the two telescopic blocks (601) close to each other.

6. The steelmaking furnace for efficient waste gas treatment according to claim 5, characterized in that: The two connecting rods (602) are rotatably connected to a fixed block (603) at one end close to each other, and a sliding rod (604) is fixedly connected to the side of the fixed block (603). The sliding rod (604) is slidably connected inside the rotating shaft (501), and the top of the sliding rod (604) is hinged to the bottom of the connecting rod (502) through a hinge seat, and the bottom of the sliding rod (604) extends downward to the bottom of the lower cover plate (303).

7. The steelmaking furnace for efficient waste gas treatment according to claim 2, characterized in that: The shaking mechanism (70) comprises two groups of rotating rods (701) arranged on both sides of the partition (304), each group of rotating rods (701) has two rotating rods, each rotating rod (701) passes through the upper cover plate (302) and the lower cover plate (303), and each rotating rod (701) is fixedly connected to a swing bar (702) on the outside, and each rotating rod (701) is fixedly connected to a first friction disk (703) at the bottom, and an ejection assembly (80) for removing the filter bag (305) from the inside of the shell (301) is arranged at the top of the rotating rod (701).

8. The steelmaking furnace for efficient waste gas treatment according to claim 7, characterized in that: The shaking mechanism (70) also includes a funnel (707) and a docking head (709) respectively connected to the bottom receiving opening (309) of the lower cover plate (303); the bottom of the funnel (707) is fixedly connected to a collecting tank (706); the docking head (709) is fixedly connected to an end of the connecting pipe (20) away from the furnace body (10); the funnel (707) and the docking head (709) are fixedly connected via a bracket (708); the middle part of the bracket (708) is fixedly connected to the bottom of the slide bar (604); the outer side of the funnel (707) is symmetrically fixedly connected to a motor (705); the output end of each motor (705) is fixedly connected to a second friction disk (704); the second friction disk (704) matches the first friction disk (703) with each other.

9. The steelmaking furnace for efficient waste gas treatment according to claim 8, characterized in that: The ejection assembly (80) includes a first gear ring (801) rotatably connected to the top of the upper cover plate (302), the inner wall of the first gear ring (801) is provided with an internal thread (806), and the outer sides of the plurality of connecting plates (307) are provided with external threads (805), and the first gear ring (801) and the plurality of connecting plates (307) are connected by matching threads of the internal thread (806) and the external thread (805).

10. The steelmaking furnace for efficient waste gas treatment according to claim 9, characterized in that: The ejection assembly (80) further comprises a ratchet pawl (804) rotatably connected to the top of the rotating rod (701); the top of the upper cover plate (302) is also rotatably connected to a second toothed ring (802); the second toothed ring (802) is meshed with the first toothed ring (801); a plurality of ratchet teeth (803) are fixedly connected in an annular shape inside the second toothed ring (802); the ratchet teeth (803) are meshed with the ratchet pawl (804).

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