Industrial steelmaking furnace capable of efficiently treating waste gas

Abstract

The invention provides an industrial steelmaking furnace capable of efficiently treating waste gas, and relates to the technical field of industrial steelmaking furnaces, the industrial steelmaking furnace comprises a smelting furnace mechanism, a linkage mechanism is mounted on the smelting furnace mechanism in a driving manner, the linkage mechanism is mounted above the smelting furnace mechanism, and a steelmaking furnace is fixedly connected to the lower surface of a reinforcing ring. When an electric push rod drives a lifting rod to ascend, a movable support can be pushed to horizontally move in a sliding groove through a side transmission connecting rod and a connecting shaft, side extending plates are slidably installed on the two sides of one end of the movable support, and fixing bases on the two sides of the two side extending plates are connected to the upper surface of a hoisting table through traction arms; in the horizontal moving process of the movable support, the traction arms can play a limiting role, the side extending plates are pulled to extend towards the two sides with the movable support as the center, the contact area is enlarged to block the upper portion of smelting liquid, collected smoke is purified through the smoke purifier body, and then the working environment that the smelting smoke is diffused is prevented.

Description

Technical Field

[0001] The present invention relates to the technical field of industrial steelmaking furnaces, and in particular to an industrial steelmaking furnace for efficiently treating waste gas. Background Art

[0002] Converter steelmaking uses molten iron, scrap steel, and ferroalloys as its main raw materials. Steelmaking is completed in the converter without the aid of external energy sources, relying on the physical heat of the molten iron itself and the chemical reactions between its components to generate heat. The steelmaking furnace produces some harmful gases during the smelting process, which necessitates the use of flue gas capture to purify the flue gas. Flue gas capture is a key technology for controlling smoke dust in electric furnaces in the steelmaking field. It primarily guides smelting flue gas into the purification system through a fume hood, solving the problems of high-temperature damage and high energy consumption of traditional equipment. It is primarily used in large and medium-sized ultra-high-power electric furnaces. For this purpose, application number: CN218723215U discloses an exhaust heat exhaust mechanism for a steelmaking furnace, comprising a steelmaking furnace, wherein the steelmaking furnace is provided with a furnace port, a heat dissipation hole is provided on the outer surface of the steelmaking furnace, a heat exhaust component is fixedly connected to the outer surface of the steelmaking furnace, and the heat exhaust component comprises a blow box fixedly connected to the outer surface of the steelmaking furnace, an air vent is provided inside the blow box, a blow fan is fixedly connected inside the blow box, and a first filter is fixedly connected inside the blow box. When exhaust heat exhaust is required, the exhaust heat exhaust mechanism of the steelmaking furnace is driven to rotate by starting a motor, and since the threaded rod is threadedly connected to the threaded block, the rotation of the threaded rod drives the threaded block plug plate and the slider to move upward, so that the blow box is connected to the heat dissipation hole, and the exhaust fan is started to blow air, so that the exhaust gas inside the steelmaking furnace is blown upward, and at the same time, the exhaust fan is turned on to exhaust the exhaust gas inside the steelmaking furnace to the outside through the exhaust pipe, so that the exhaust effect is good, the heat dissipation is uniform, and the furnace port charging position is not occupied.

[0003] At present, in the existing technology, flue gas capture is used to purify the flue gas during the processing of industrial steel-making furnaces. In particular, a large amount of flue gas will be exposed when the steel-making furnace pours the molten liquid. During the process of capturing the flue gas, some of the flue gas will drift into the work workshop by the traditional smoke collection hood, thereby affecting the air quality of the working environment of the workshop. Therefore, the present invention proposes an industrial steel-making furnace with efficient waste gas treatment. Summary of the Invention

[0004] The purpose of the present invention is to solve the problem existing in the prior art that flue gas is captured to purify the flue gas during the processing of an industrial steelmaking furnace, especially when a large amount of flue gas is exposed when the steelmaking furnace pours the molten liquid. In the process of capturing the flue gas, the traditional smoke collection hood will cause some of the flue gas to drift into the work workshop, thereby affecting the air quality of the working environment of the workshop.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions: an industrial steel-making furnace for efficient waste gas treatment, comprising a furnace mechanism, a linkage mechanism is driven and installed on the furnace mechanism, the linkage mechanism is installed above the furnace mechanism, a limiting mechanism is driven and installed on the linkage mechanism, and a flue gas purifier body is installed on the upper surface of the linkage mechanism; the furnace mechanism comprises a lifting platform, connecting seats are fixedly connected to both sides of the lower surface of the lifting platform, connecting sheet metals are rotatably installed in two of the connecting seats, center shafts are rotatably installed at the lower ends of the two connecting sheet metals, a reinforcement ring is fixedly connected between the two center shafts, and the steel-making furnace is fixedly connected to the lower surface of the reinforcement ring.

[0006] In at least some embodiments, a lower fixed sheet metal is fixedly connected to the lower surface of the steelmaking furnace, a connecting piece is rotatably mounted on one end of the lower fixed sheet metal, a lifting rod is rotatably mounted on the upper end of the connecting piece, and an electric push rod output shaft is fixedly connected to the upper end of the lifting rod.

[0007] In at least some embodiments, one end of the electric push rod is fixedly connected to a push rod mounting rod, the push rod mounting rod is fixedly connected to the outer side wall of the hanging platform, and sliding grooves are further provided on both sides of the upper surface of the hanging platform.

[0008] In at least some embodiments, the linkage mechanism includes two side transmission links, which are located on both sides of the lifting rod. The lower ends of the two side transmission links are rotatably installed on the two side surfaces of the upper end of the lifting rod. One side of the upper end of the two side transmission links is fixed with a connecting shaft, and one end of the two connecting shafts is rotatably installed with a movable bracket, and the movable bracket is slidably installed in the slide groove.

[0009] In at least some embodiments, a baffle is fixedly connected to the inner wall of the movable bracket, a flue gas purifier body is installed in the middle of the upper surface of the baffle, a limiting bracket is fixedly connected to the upper surface of the movable bracket, side extension plates are slidingly installed on both sides of the limiting bracket, the two side extension plates are located on both sides of the flue gas purifier body, and the outer edges of the two side extension plates are fixed with fixed seats, and traction arms are rotatably installed in the two fixed seats, and the two traction arms are rotatably installed on the upper surface of the lifting platform.

[0010] In at least some embodiments, the limiting mechanism includes an extension plate, which is located on one side of the movable bracket. Rotating sheet metals are fixed on both sides of one end of the extension plate. Rotating shafts are fixed inside the two rotating sheet metals. A driven gear is fixed at one end of the inner side of the two rotating shafts. The two rotating shafts are rotatably installed on one end of the movable bracket.

[0011] In at least some embodiments, a movable plate is meshedly connected below the two driven gears, a tooth plate is fixedly connected to the upper surface of the two movable plates, a slider is fixedly connected to the edge of the upper surface of the two movable plates, the two sliders are slidably installed on the lower surface of the movable bracket, one side of the two tooth plates is meshedly connected to the driving gear, and the center of one side of the two driving gears is fixedly connected to a mounting sheet metal.

[0012] In at least some embodiments, the two mounting sheet metals are rotatably mounted on one end of the movable bracket near the rotating shaft, and a limiting wheel is rotatably mounted on one end of the two mounting sheet metals. An L-shaped connecting sheet metal is provided on the outer side of the two limiting wheels, and a limiting groove is provided at one end of each L-shaped connecting sheet metal, and the two limiting wheels are slidably mounted in the limiting groove.

[0013] Compared with the prior art, the advantages and positive effects of the present invention are: In the present invention, when the electric push rod drives the lifting rod to rise, the movable bracket can be pushed to move horizontally along the slide groove through the side transmission connecting rod and the connecting shaft. Side extension plates are installed on both sides of one end of the movable bracket through sliding, and the fixed seats on both sides of the two side extension plates are connected to the upper surface of the lifting platform through traction arms. When the movable bracket is in the process of horizontal movement, the traction arm can play a limiting role, pulling the side extension plates to extend to both sides with the movable bracket as the center, so as to expand the contact area to seal the top of the refined liquid, and purify the collected flue gas through the flue gas purifier body, thereby preventing the smelting flue gas from diffusing into the working environment.

[0014] In the present invention, when the movable bracket moves to one end of the L-shaped connecting sheet metal, the limiting wheel of the L-shaped connecting sheet metal can drive the installation sheet metal to rotate, and then the driving gear at one end of the installation sheet metal will push the movable plate and the tooth plate to move horizontally along the slider, and the tooth plate can drive the driven gear to rotate and drive the rotating shaft to rotate, and the rotating shaft can drive the extension plate to rotate toward one side of the steelmaking furnace, thereby realizing the gathering and collection of the flue gas and preventing the problem of leakage of the flue gas from the furnace.

[0015] In the present invention, the electric push rod is started to drive the lifting rod to rise and fall, and the lower end of the lifting rod is connected to the steel-making furnace through a connecting piece and a lower fixed sheet metal. The steel-making furnace can rotate with the lower end of the connecting sheet metal as the center through the central axis, and the connecting sheet metal can rotate with the connecting seat as the center. The connecting seat, the connecting sheet metal and the central axis can play a connecting role between the lifting platform and the steel-making furnace. The steel-making furnace can be pulled to a tilted state by the electric push rod, and the internal refining liquid can be poured out when the steel-making furnace is in a tilted state. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic perspective view of the overall structure of one side of an industrial steelmaking furnace for efficient waste gas treatment proposed by the present invention; Figure 2A schematic perspective view of the other side of the overall structure of an industrial steelmaking furnace for efficient waste gas treatment proposed by the present invention; Figure 3 A schematic perspective view of the overall structure of an industrial steelmaking furnace for efficient waste gas treatment proposed by the present invention; Figure 4 A schematic three-dimensional diagram of the combined structure of the furnace mechanism and linkage mechanism of an industrial steelmaking furnace for efficient waste gas treatment proposed by the present invention; Figure 5 A schematic perspective view of the overall structure of a linkage mechanism for an industrial steelmaking furnace for efficient waste gas treatment proposed by the present invention; Figure 6 A schematic three-dimensional diagram of the combined structure of a limiting mechanism and a furnace mechanism of an industrial steelmaking furnace for efficient waste gas treatment proposed by the present invention; Figure 7 The present invention provides a schematic three-dimensional diagram of the explosion structure of a limiting mechanism of an industrial steelmaking furnace for efficient waste gas treatment.

[0017] Legend: 100, furnace mechanism; 200, linkage mechanism; 300, limit mechanism; 400, flue gas purifier body; 101, lifting platform; 102, slide; 103, connecting seat; 104, connecting sheet metal; 105, center axis; 106, reinforcement ring; 107, steelmaking furnace; 108, lower fixed sheet metal; 109, connecting piece; 110, lifting rod; 111, electric push rod; 112, push rod mounting rod; 201, side transmission connecting rod; 2 02. Connecting shaft; 203. Movable bracket; 204. Limiting bracket; 205. Baffle; 206. Side extension plate; 207. Pulling arm; 208. Fixed seat; 301. L-shaped connecting sheet metal; 302. Limiting groove; 303. Extension plate; 304. Rotating sheet metal; 305. Rotating shaft; 306. Driven gear; 307. Movable plate; 308. Slider; 309. Tooth plate; 310. Limiting wheel; 311. Mounting sheet metal; 312. Driving gear. DETAILED DESCRIPTION

[0018] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that, in the absence of conflict, the embodiments of the present application and the features therein can be combined with each other.

[0019] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0020] Embodiment, according to Figure 1-Figure 7An embodiment of the present invention provides an industrial steelmaking furnace for efficient waste gas treatment, including a furnace mechanism 100, wherein a linkage mechanism 200 is driven and installed on the furnace mechanism 100, and the linkage mechanism 200 is installed above the furnace mechanism 100, and a limiting mechanism 300 is driven and installed on the linkage mechanism 200, and a flue gas purifier body 400 is installed on the upper surface of the linkage mechanism 200, and the furnace mechanism 100 can drive the steelmaking furnace 107 to a tilted state to realize the dumping of the internal smelting liquid by the steelmaking furnace 107, and drive the linkage mechanism 200 to extend the two side extension plates 206, thereby capturing the flue gas generated by the dumping of the smelting liquid, and at the same time, the limiting mechanism 300 can be linked to adjust the angle of the extension plate 303, thereby capturing more flue gas during the dumping process of the smelting liquid, thereby improving the flue gas treatment effect of the equipment, so that the flue gas purifier body 400 can purify more flue gas; Figure 3 As shown, the furnace mechanism 100 includes a lifting platform 101, and connecting seats 103 are fixedly connected on both sides of the lower surface of the lifting platform 101. Connecting sheet metals 104 are rotatably installed in the two connecting seats 103, and central shafts 105 are rotatably installed at the lower ends of the two connecting sheet metals 104. A reinforcement ring 106 is fixed between the two central shafts 105, and a steelmaking furnace 107 is fixedly connected to the lower surface of the reinforcement ring 106. The steelmaking furnace 107 can rotate around the lower end of the connecting sheet metal 104 through the central shaft 105, and the connecting sheet metal 104 can rotate around the connecting seat 103. The connecting seat 103, the connecting sheet metal 104 and the central shaft 105 can play a connecting role between the lifting platform 101 and the steelmaking furnace 107.

[0021] like Figure 3 As shown, the lower surface of the steel-making furnace 107 is fixedly connected to a lower fixed sheet metal 108, and a connecting piece 109 is rotatably installed at one end of the lower fixed sheet metal 108. A lifting rod 110 is rotatably installed on the upper end of the connecting piece 109. The upper end of the lifting rod 110 is fixedly connected to the output shaft of an electric push rod 111, and one end of the electric push rod 111 is fixedly connected to a push rod mounting rod 112. The push rod mounting rod 112 is fixed to the outer side wall of the lifting platform 101. Slide grooves 102 are also provided on both sides of the upper surface of the lifting platform 101. The electric push rod 111 is started to drive the lifting rod 110 to rise and fall. The lower end of the lifting rod 110 is connected to the steel-making furnace 107 through the connecting piece 109 and the lower fixed sheet metal 108. The steel-making furnace 107 can be pulled to a tilted state by the electric push rod 111. When the steel-making furnace 107 is in a tilted state, the internal refining liquid can be poured out.

[0022] like Figure 4-Figure 5As shown, the linkage mechanism 200 includes two side transmission links 201, the two side transmission links 201 are located on both sides of the lifting rod 110, the lower ends of the two side transmission links 201 are rotatably installed on the two side surfaces of the upper end of the lifting rod 110, one side of the upper end of the two side transmission links 201 is fixedly connected with a connecting shaft 202, and one end of the two connecting shafts 202 is rotatably installed with a movable bracket 203, and the movable bracket 203 is slidably installed in the slide groove 102, and a baffle 205 is fixedly connected to the inner wall of the movable bracket 203, and the middle part of the upper surface of the baffle 205 is installed with a flue gas purifier body 400, and the upper surface of the movable bracket 203 is fixedly connected to a limiting bracket 204, and side extension plates 206 are slidably installed on both sides of the limiting bracket 204, and the two side extension plates 206 are located on both sides of the flue gas purifier body 400, and the outer edges of the two side extension plates 206 are fixedly connected with a fixing seat 2 08. A traction arm 207 is rotatably installed in the two fixed seats 208. The two traction arms 207 are rotatably installed on the upper surface of the lifting platform 101. When the electric push rod 111 drives the lifting rod 110 to rise, the movable bracket 203 can be pushed to move horizontally along the slide groove 102 through the side transmission connecting rod 201 and the connecting shaft 202. Side extension plates 206 are slidably installed on both sides of one end of the movable bracket 203, and the fixed seats 208 on both sides of the two side extension plates 206 are connected to the upper surface of the lifting platform 101 through the traction arm 207. When the movable bracket 203 is in the process of horizontal movement, the traction arm 207 can play a limiting role, pulling the side extension plates 206 to extend to both sides with the movable bracket 203 as the center, so as to expand the contact area to seal the top of the refined liquid, and purify the collected flue gas through the flue gas purifier body 400, thereby preventing the smelting flue gas from diffusing into the working environment.

[0023] like Figure 6-Figure 7As shown, the limiting mechanism 300 includes an extension plate 303, which is located on one side of the movable bracket 203. Rotating sheet metals 304 are fixedly connected to both sides of one end of the extension plate 303. Rotating shafts 305 are fixedly connected to the two rotating sheet metals 304. One end of the inner side of the two rotating shafts 305 is fixedly connected to a driven gear 306. The two rotating shafts 305 are rotatably installed on one end of the movable bracket 203. The two driven gears 306 are meshed with a movable plate 307 below. The two movable plates 307 are fixed to the inner side of the movable bracket 203. 07 are fixed with tooth plates 309 on the upper surface, and the edges of the upper surfaces of the two movable plates 307 are fixed with sliders 308, and the two sliders 308 are slidably mounted on the lower surface of the movable bracket 203. One side of the two tooth plates 309 is meshed with a driving gear 312, and the center of one side of the two driving gears 312 is fixed with a mounting sheet metal 311. The two mounting sheet metals 311 are rotatably mounted on one end of the movable bracket 203 near the rotating shaft 305, and one end of the two mounting sheet metals 311 is rotatably mounted. The limiting wheels 310 are provided with an L-shaped connecting sheet metal 301 on the outside of the two limiting wheels 310. A limiting groove 302 is provided at one end of each L-shaped connecting sheet metal 301. The two limiting wheels 310 are slidably installed in the limiting groove 302. During the horizontal movement of the movable bracket 203 along the slide groove 102, the mounting sheet metal 311 at one end of the movable bracket 203 is installed in the limiting groove 302 of the L-shaped connecting sheet metal 301 through the limiting wheel 310. When the movable bracket 203 moves to one end of the L-shaped connecting sheet metal 301, The L-shaped connecting sheet metal 301 limits the limiting wheel 310 to drive the installation sheet metal 311 to rotate, and then the driving gear 312 at one end of the installation sheet metal 311 will push the movable plate 307 and the tooth plate 309 to move horizontally along the slider 308. The tooth plate 309 can drive the driven gear 306 to rotate, thereby driving the rotating shaft 305 to rotate. The rotating shaft 305 can drive the extension plate 303 to rotate toward the side of the steelmaking furnace 107, thereby realizing the gathering and collection of the flue gas and preventing the leakage of the flue gas from the furnace.

[0024] The working principle of the present invention is as follows: when the smelting liquid in the steelmaking furnace 107 needs to be poured out, the electric push rod 111 is started to drive the lifting rod 110 to move up and down, and the lower end of the lifting rod 110 is connected to the steelmaking furnace 107 through the connecting piece 109 and the lower fixed sheet metal 108, and the steelmaking furnace 107 can rotate around the lower end of the connecting sheet metal 104 through the central axis 105, and the connecting sheet metal 104 can rotate around the connecting seat 103. The connecting seat 103, the connecting sheet metal 104 and the central axis 105 can rotate the lifting platform 101 and the steelmaking furnace 107. The steelmaking furnace 107 plays a connecting role, and the electric push rod 111 can be used to pull the steelmaking furnace 107 to a tilted state. When the steelmaking furnace 107 is in a tilted state, the internal smelting liquid can be poured out. During the pouring process, some harmful smoke will be generated. When the electric push rod 111 drives the lifting rod 110 to rise, the side transmission connecting rod 201 and the connecting shaft 202 can push the movable bracket 203 to move horizontally along the slide 102. Side extension plates 206 are installed on both sides of one end of the movable bracket 203, and the two side extension plates 206 are installed on both sides of the movable bracket 203. The fixed seats 208 on both sides of 06 are connected to the upper surface of the hoisting platform 101 through the traction arms 207. When the movable bracket 203 is in the process of horizontal movement, the traction arms 207 can play a role of limiting, pulling the side extension plates 206 to extend to both sides with the movable bracket 203 as the center, so as to expand the contact area to block the top of the refined liquid, and purify the collected flue gas through the flue gas purifier body 400, thereby preventing the working environment of the smelting flue gas from diffusing, and when the movable bracket 203 moves to the L-shaped connecting sheet metal 301, the side extension plates 206 can be pulled to extend to both sides with the movable bracket 203 as the center, so as to expand the contact area to block the top of the refined liquid, and purify the collected flue gas through the flue gas purifier body 400, thereby preventing the smelting flue gas from diffusing. When the end is reached, the L-shaped connecting sheet metal 301 limits the limiting wheel 310 to drive the installation sheet metal 311 to rotate, and then the driving gear 312 at one end of the installation sheet metal 311 will push the movable plate 307 and the tooth plate 309 to move horizontally along the slider 308, and the tooth plate 309 can drive the driven gear 306 to rotate, thereby driving the rotating shaft 305 to rotate, and the rotating shaft 305 can drive the extension plate 303 to rotate toward the side of the steelmaking furnace 107, thereby realizing the gathering and collection of the flue gas and preventing the leakage of the flue gas from the furnace.

[0025] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any other form. Any person skilled in the art may use the technical contents disclosed above to change or modify them into equivalent embodiments with equivalent changes for application in other fields. However, any simple modification, equivalent change and modification of the above embodiments made in accordance with the technical essence of the present invention without departing from the technical solution of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. An industrial steelmaking furnace for efficient waste gas treatment, comprising a furnace mechanism (100), characterized in that: A linkage mechanism (200) is driven and installed on the furnace mechanism (100), the linkage mechanism (200) is installed above the furnace mechanism (100), a limiting mechanism (300) is driven and installed on the linkage mechanism (200), and a flue gas purifier body (400) is installed on the upper surface of the linkage mechanism (200); The furnace mechanism (100) includes a hoisting platform (101), and connecting seats (103) are fixedly connected to both sides of the lower surface of the hoisting platform (101), and connecting sheet metals (104) are rotatably installed in the two connecting seats (103). A central shaft (105) is rotatably installed at the lower ends of the two connecting sheet metals (104), and a reinforcement ring (106) is fixedly connected between the two central shafts (105). The lower surface of the reinforcement ring (106) is fixedly connected to a steelmaking furnace (107).

2. The industrial steelmaking furnace for efficient waste gas treatment according to claim 1, characterized in that: A lower fixed sheet metal (108) is fixedly connected to the lower surface of the steelmaking furnace (107), a connecting piece (109) is rotatably mounted on one end of the lower fixed sheet metal (108), a lifting rod (110) is rotatably mounted on the upper end of the connecting piece (109), and an output shaft of an electric push rod (111) is fixedly connected to the upper end of the lifting rod (110).

3. The industrial steelmaking furnace for efficient waste gas treatment according to claim 2, characterized in that: One end of the electric push rod (111) is fixedly connected to a push rod mounting rod (112), and the push rod mounting rod (112) is fixedly connected to the outer wall of the hanging platform (101). Slide grooves (102) are also provided on both sides of the upper surface of the hanging platform (101).

4. The industrial steelmaking furnace for efficient waste gas treatment according to claim 1, characterized in that: The linkage mechanism (200) includes two side transmission links (201), the two side transmission links (201) are located on both sides of the lifting rod (110), the lower ends of the two side transmission links (201) are rotatably mounted on the surfaces on both sides of the upper end of the lifting rod (110), one side of the upper end of the two side transmission links (201) is fixedly connected with a connecting shaft (202), one end of the two connecting shafts (202) is rotatably mounted with a movable bracket (203), and the movable bracket (203) is slidably mounted in the slide groove (102).

5. The industrial steelmaking furnace for efficient waste gas treatment according to claim 4, characterized in that: A baffle (205) is fixedly connected to the inner wall of the movable bracket (203), and a flue gas purifier body (400) is installed in the middle of the upper surface of the baffle (205). A limiting bracket (204) is fixedly connected to the upper surface of the movable bracket (203), and side extension plates (206) are slidably installed on both sides of the limiting bracket (204). The two side extension plates (206) are located on both sides of the flue gas purifier body (400). The outer edges of the two side extension plates (206) are fixedly connected to fixed seats (208), and traction arms (207) are rotatably installed in the two fixed seats (208). The two traction arms (207) are rotatably installed on the upper surface of the hoisting platform (101).

6. The industrial steelmaking furnace for efficient waste gas treatment according to claim 1, characterized in that: The limiting mechanism (300) comprises an extension plate (303), the extension plate (303) being located on one side of the movable bracket (203), a rotating sheet metal (304) being fixedly connected to both sides of one end of the extension plate (303), a rotating shaft (305) being fixedly connected inside the two rotating sheet metals (304), a driven gear (306) being fixedly connected to one end of the inner side of the two rotating shafts (305), and the two rotating shafts (305) being rotatably mounted on one end of the movable bracket (203).

7. The industrial steelmaking furnace for efficient waste gas treatment according to claim 6, characterized in that: The two driven gears (306) are meshedly connected with a movable plate (307) below, the upper surfaces of the two movable plates (307) are fixed with tooth plates (309), the edges of the upper surfaces of the two movable plates (307) are fixed with sliders (308), the two sliders (308) are slidably mounted on the lower surface of the movable bracket (203), one side of the two tooth plates (309) is meshedly connected with a driving gear (312), and the center of one side of the two driving gears (312) is fixed with a mounting sheet metal (311).

8. The industrial steelmaking furnace for efficient waste gas treatment according to claim 7, characterized in that: The two mounting sheet metals (311) are both rotatably mounted on one end of the movable bracket (203) close to the rotating shaft (305), and a limiting wheel (310) is rotatably mounted on one end of the two mounting sheet metals (311). An L-shaped connecting sheet metal (301) is provided on the outside of the two limiting wheels (310), and a limiting groove (302) is provided at one end of each of the L-shaped connecting sheet metals (301), and the two limiting wheels (310) are slidably mounted in the limiting groove (302).

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