Self-cleaning electric arc furnace

Abstract

This utility model relates to the field of electric arc furnace technology and provides a self-cleaning electric arc furnace, comprising: a support bracket; a furnace body disposed in the middle of the support bracket; rotating clamps symmetrically disposed on both sides of the top of the support bracket to clamp and fix the furnace body; and a hot-melt scraping structure disposed inside the furnace body; the hot-melt scraping structure includes a scraper and a three-way pipe. Compared with the prior art, the beneficial effects of this utility model are: during use, by setting the hot-melt scraping structure inside the furnace body, the contact part can be heated, thereby melting the bottom of the nearby residual solidified molten steel, pushing the hot-melt scraping structure, causing the solidified molten steel to quickly separate from the melted part, and due to the tilt of the furnace body, quickly fall out of the furnace body, thus realizing the cleaning of the solidified molten steel and reducing the trouble caused by manual cleaning.

Description

Technical Field

[0001] This utility model belongs to the field of electric arc furnace technology, and in particular relates to a self-cleaning electric arc furnace. Background Technology

[0002] In order to ensure the quality of special steel, after rough refining, the raw materials of special steel are smelted in an electric arc furnace.

[0003] When pouring, due to the angle and other factors, some impurities such as molten steel will remain on the inner wall of the electric arc furnace. As the temperature decreases, these impurities will solidify on the inner wall of the electric arc furnace. Because the inner wall is too deep, cleaning is not convenient.

[0004] Therefore, how to provide a self-cleaning electric arc furnace is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] The purpose of this invention is to provide a self-cleaning electric arc furnace, which aims to solve the problems mentioned in the background art.

[0006] This utility model is implemented as follows: a self-cleaning electric arc furnace, comprising;

[0007] Support bracket;

[0008] A furnace body, wherein the furnace body is disposed in the middle of the support bracket;

[0009] Rotary clamping blocks are symmetrically arranged on both sides of the top of the support bracket to clamp and fix the furnace body.

[0010] A hot-melting scraping structure is disposed inside the furnace body;

[0011] The hot-melting scraping structure includes a scraper and a three-way pipe. The scraper is located inside the furnace body and has a heat-insulating gas storage box fixedly installed on its top. A placement groove is opened in the middle of the scraper. Heat-conducting plates are provided on the right side and bottom of the placement groove. The three-way pipe is fixedly installed in the middle of the placement groove. The top of the three-way pipe is fixedly connected to the heat-insulating gas storage box and is equipped with an air pump. Electric on / off valves are provided on the lower side and right side of the three-way pipe, and an air jet plate is fixedly installed at its outer end. An igniter is provided on the outer side of the air jet plate.

[0012] Preferably, a support plate is fixedly installed on the top of the rotating clamp, an electric rotating disk is provided inside the support plate, and a lifting structure is provided on the top of the electric rotating disk. The lifting structure includes a positioning frame and a lifting plate. The positioning frame is fixedly installed on the top of the electric rotating disk, and an electric lifting screw is movably installed in the middle. The lifting plate is set on the surface of the electric lifting screw, and a rotating rod is movably arranged on the right side. The side of the bottom of the rotating rod is fixedly connected to the hot-melt scraping structure. A rotating unit is provided on the top of the lifting plate, so that the electric lifting screw and the rotating rod are connected in a transmission manner.

[0013] Preferably, the rotating unit includes sprockets and chains. The sprocket array is arranged on the top of the lifting plate. The left sprocket is movably installed on the left side of the lifting plate and is movably connected to the electric lifting screw. The right sprocket is arranged on the top of the right end of the lifting plate and is fixedly connected to the rotating rod. The chain is sleeved on the surface of the two sprockets.

[0014] Preferably, the top of the support bracket on the left side is provided with a first sliding groove, the side of the first sliding groove is provided with a second sliding groove, and a slider is fixedly installed at the bottom of the support plate, the slider being slidably disposed inside the first and second sliding grooves.

[0015] Preferably, the curvature of the heat-conducting plate on the right side is equal to the curvature of the inner wall of the furnace body, and the length of the heat-conducting plate on the lower side is equal to the radius of the inner wall of the furnace body.

[0016] Preferably, the width of the heat-conducting plates on both sides is equal to the width of the placement groove, and the scraper as a whole is a heat-insulating scraper.

[0017] Preferably, the length of the jet plate is less than the length of the corresponding heat-conducting plate, and the length of the igniter is less than the length of the jet plate.

[0018] Compared with the prior art, the beneficial effects of this utility model are: during use, by setting a hot-melt scraping structure inside the furnace body, the contact part can be heated, thereby melting the bottom of the solidified molten steel residue nearby, and pushing the hot-melt scraping structure, so that the solidified molten steel residue is quickly separated from the melted part, and due to the tilt of the furnace body, it quickly falls out of the furnace body, thereby realizing the cleaning of the solidified molten steel residue and reducing the trouble caused by manual cleaning;

[0019] Meanwhile, by fixing a support plate to the top of the left rotating clamp and installing an electric rotating disk, the angle of the lifting structure can be controlled, thus facilitating the discharge of internal materials. A rotating unit is installed on the lifting structure, which can drive the aforementioned hot-melt scraping structure to reciprocate and lift, thereby penetrating deep into the furnace body to thoroughly clean the solidified molten steel residue inside the furnace body, thus further achieving the cleaning effect of solidified molten steel residue. Attached Figure Description

[0020] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0021] Figure 1 A schematic diagram of the overall appearance structure of a self-cleaning electric arc furnace provided for an embodiment of this utility model;

[0022] Figure 2 A schematic diagram of the main cross-sectional structure of a self-cleaning electric arc furnace provided for an embodiment of this utility model;

[0023] Figure 3 A schematic diagram of the left cross-sectional structure of a self-cleaning electric arc furnace provided for an embodiment of this utility model;

[0024] Figure 4 Provided for the embodiments of this utility model Figure 2 A magnified structural diagram of part A;

[0025] Figure 5 Provided for the embodiments of this utility model Figure 2 A schematic diagram of the enlarged structure of part B;

[0026] Figure 6 Provided for the embodiments of this utility model Figure 2 A magnified structural diagram of part C.

[0027] In the diagram: 1-Support bracket, 2-Rotating clamp, 3-Furnace body, 4-Support plate, 5-Electric rotary disc, 6-Positioning frame, 7-Electric lifting screw, 8-Lifting plate, 9-Sprocket, 10-Chain, 11-Rotor, 12-Insulated gas storage box, 13-Scraper, 14-Placement slot, 15-T-pipe, 16-Electric on / off valve, 17-Air pump, 18-Igniter, 19-Heat conduction plate, 20-First slide, 21-Second slide, 22-Slider, 23-Air jet plate. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0029] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0030] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 The diagram shown is a structural schematic of a self-cleaning electric arc furnace according to an embodiment of the present invention, comprising:

[0031] Support bracket 1;

[0032] The furnace body 3 is located in the middle of the support bracket 1;

[0033] Rotating clamps 2 are symmetrically arranged on both sides of the top of the support bracket 1 to clamp and fix the furnace body 3.

[0034] The hot-melting scraping structure is located inside the furnace body 3;

[0035] The hot-melting scraping structure includes a scraper 13 and a three-way pipe 15. The scraper 13 is located inside the furnace body 3, and a heat-insulating gas storage box 12 is fixedly installed on its top. A placement groove 14 is opened in the middle of the scraper 13. Heat-conducting plates 19 are provided on the right side and bottom of the placement groove 14. The three-way pipe 15 is fixedly installed in the middle of the placement groove 14. The top of the three-way pipe 15 is fixedly connected to the heat-insulating gas storage box 12 and is equipped with an air pump 17. Electric on / off valves 16 are provided on the lower side and right side of the three-way pipe 15, and an air jet plate 23 is fixedly installed on its outer end. An igniter 18 is provided on the outer side of the air jet plate 23.

[0036] In this embodiment of the utility model, when in use, the air pump 17 on the right side of the heat insulation gas storage box 12 is started, and the electric on / off valve 16 on the right side is started, so that the air pump 17 can draw the combustible gas in the heat insulation gas storage box 12 into the three-way pipe 15, and then enter the right jet plate 23 through the opened electric on / off valve 16 to blow air onto the right heat conduction plate 19, and the igniter 18 is started to heat the right heat conduction plate 19, so that the nearby solidified molten steel melts. Then, with the cooperation of the scraper 13, the solidified molten steel that has been solidified due to cooling and adhering to the inner wall of the furnace body 3 is melted and loosened. Then, when the scraper 13 rotates in the opposite direction, since the solidified molten steel only melts the part of the bottom that is in contact with the furnace body 3, the solidified molten steel can fall out. So when the scraper 13 moves away, the solidified molten steel quickly separates from the part of the bottom that has melted and re-solidified, so that the solidified molten steel can be discharged, thereby reducing the residue of solidified molten steel on the inner wall of the furnace body 3.

[0037] By setting a hot-melting scraping structure inside the furnace body 3, the contact part can be heated, thereby melting the bottom of the solidified molten steel residue nearby. The hot-melting scraping structure is then pushed, causing the solidified molten steel residue to quickly separate from the melted part. Due to the tilt of the furnace body 3, the residue quickly falls out of the furnace body 3, thus achieving the cleaning of the solidified molten steel residue and reducing the trouble caused by manual cleaning.

[0038] like Figure 1 , Figure 2 and Figure 3 As shown, in a preferred embodiment of this utility model, a support plate 4 is fixedly installed on the top of the rotating clamp 2. An electric rotating disk 5 is provided inside the support plate 4. A lifting structure is provided on the top of the electric rotating disk 5. The lifting structure includes a positioning frame 6 and a lifting plate 8. The positioning frame 6 is fixedly installed on the top of the electric rotating disk 5, and an electric lifting screw 7 is movably installed in the middle. The lifting plate 8 is disposed on the surface of the electric lifting screw 7, and a rotating rod 11 is movably disposed on the right side. The side of the bottom of the rotating rod 11 is fixedly connected to the hot-melt scraping structure. A rotating unit is provided on the top of the lifting plate 8, so that the electric lifting screw 7 and the rotating rod 11 are connected in a transmission manner.

[0039] In this embodiment of the utility model, when in use, the electric lifting screw 7 is activated, causing the electric lifting screw 7 to rotate forward significantly and then reverse slightly, thereby causing the lifting plate 8 to rise and fall intermittently. This drives the rotating rod 11 and the scraper 13 on its surface into the furnace body 3. At the same time, when the lifting plate 8 moves, it drives the sprocket 9 at the top left end of the lifting plate 8 to move. Through the rotating unit, the rotating rod 11 and the scraper 13 rotate and move inside the furnace body 3, scraping away the solidified molten steel and residue remaining inside the furnace body 3. The furnace body 3 is then tilted downwards, thereby allowing the scraped solidified molten steel and residue inside to be discharged.

[0040] By fixing a support plate 4 to the top of the left rotating clamp 2 and setting an electric rotating disk 5, the angle of the lifting structure can be controlled, thereby facilitating the discharge of internal materials. A rotating unit is set on the lifting structure, which can drive the above-mentioned hot melting scraping structure to reciprocate and lift, thereby reaching deep into the furnace body 3 to thoroughly clean the solidified molten steel residue inside the furnace body 3, thereby further achieving the cleaning effect of solidified molten steel residue.

[0041] like Figure 1 , Figure 2 and Figure 3 As shown, in a preferred embodiment of the present invention, the rotating unit includes sprockets 9 and chains 10. The sprockets 9 are arranged in an array on the top of the lifting plate 8. The left sprocket 9 is movably installed on the left side of the lifting plate 8 and is movably connected to the electric lifting screw 7. The right sprocket 9 is arranged on the top of the right end of the lifting plate 8 and is fixedly connected to the rotating rod 11. The chains 10 are sleeved on the surfaces of the two sprockets 9.

[0042] In this embodiment of the utility model, when the lifting plate 8 moves, it will drive the sprocket 9 at the top left end of the lifting plate 8 to move, and make the sprocket 9 at the top left end of the lifting plate 8 rotate with the surface of the lifting plate 8. Then, the chain 10 drives the sprocket 9 at the other end to rotate, so that the rotating rod 11 and the scraper 13 rotate and move inside the furnace body 3, scraping the solidified molten steel and residue remaining inside the furnace body 3.

[0043] By setting up a rotating unit, when the lifting plate 8 moves, it will drive the rotating rod 11 to rotate synchronously, which makes it easier to clean the solidified molten steel inside the furnace body 3.

[0044] like Figure 1 and Figure 3 As shown, in a preferred embodiment of the present invention, the top of the left support bracket 1 is provided with a first sliding groove 20, the side of the first sliding groove 20 is provided with a second sliding groove 21, and the bottom of the support plate 4 is fixedly installed with a slider 22, which is slidably disposed inside the first sliding groove 20 and the second sliding groove 21.

[0045] In this embodiment of the utility model, when the rotating clamp 2 rotates, it will drive the support plate 4 to adjust its angle, thereby causing the slider 22 at the bottom of the support plate 4 to slide along the first slide groove 20 and the second slide groove 21 at the top of the support bracket 1. This allows the support plate 4 to adjust its angle synchronously with the rotating clamp 2. After the furnace body 3 tilts to discharge the material, cleaning work can be carried out, reducing the difficulty of subsequent heating.

[0046] like Figure 1 , Figure 2 , Figure 5 and Figure 6 As shown, in a preferred embodiment of this utility model, the curvature of the right heat-conducting plate 19 is equal to the curvature of the inner wall of the furnace body 3, and the length of the lower heat-conducting plate 19 is equal to the radius of the inner wall of the furnace body 3.

[0047] In this embodiment of the utility model, when in use, the curvature value of the right heat-conducting plate 19 is equal to the curvature value of the inner wall of the furnace body 3, and the length value of the lower heat-conducting plate 19 is equal to the radius value of the inner wall of the furnace body 3, thereby facilitating the cleaning of the solidified molten steel residue on the inner wall of the furnace body 3.

[0048] like Figure 2 , Figure 5 and Figure 6 As shown, in a preferred embodiment of the present invention, the width of the heat-conducting plates 19 on both sides is equal to the width of the placement groove 14, and the scraper 13 is an insulated scraper as a whole.

[0049] In this embodiment of the utility model, when in use, by making the width of the heat-conducting plates 19 on both sides equal to the width of the placement groove 14, and by using the scraper 13 as a whole heat-insulating scraper, the heat-conducting plates 19 on both sides will not transfer heat to the side of the scraper 13 when they are working, so that the solidified molten steel in contact with them will melt and affect the subsequent discharge effect.

[0050] like Figure 2 , Figure 5 and Figure 6 As shown, in a preferred embodiment of the present invention, the length of the jet plate 23 is less than the length of the corresponding heat-conducting plate 19, and the length of the igniter 18 is less than the length of the jet plate 23.

[0051] In this embodiment of the invention, when in use, by making the length of the jet plate 23 less than the length of the corresponding heat-conducting plate 19, and by making the length of the igniter 18 less than the length of the jet plate 23, the combustible gas is concentrated and burned, thereby reducing the waste of combustible gas.

[0052] The present invention provides a self-cleaning electric arc furnace in the above embodiments. When in use, the rotating clamp 2 at the top of the support bracket 1 is activated, which changes the angle of the furnace body 3, thereby causing the molten steel in the furnace body 3 to be poured out.

[0053] When the rotating clamp 2 rotates, it will drive the support plate 4 to adjust its angle, which will cause the slider 22 at the bottom of the support plate 4 to slide along the first slide groove 20 and the second slide groove 21 at the top of the support bracket 1, thereby causing the support plate 4 to adjust its angle synchronously with the rotating clamp 2.

[0054] When the molten steel is poured out, and the molten steel and its residue that remain solidified due to the cooling inside the furnace body 3 are cleaned, the electric rotating disk 5 inside the support plate 4 is activated, which in turn changes the angle of the positioning frame 6, thereby moving the rotating rod 11 and the scraper 13 above the furnace body 3.

[0055] Then, the electric lifting screw 7 is activated, causing it to rotate forward significantly and then reverse slightly, which in turn causes the lifting plate 8 to rise and fall intermittently. This drives the rotating rod 11 and the scraper 13 on its surface into the furnace body 3. At the same time, when the lifting plate 8 moves, it drives the sprocket 9 at the top left end of the lifting plate 8 to move, and the sprocket 9 at the top left end of the lifting plate 8 rotates with the surface of the lifting plate 8. Then, the chain 10 drives the sprocket 9 at the other end to rotate, so that the rotating rod 11 and the scraper 13 rotate and move inside the furnace body 3, scraping away the solidified molten steel and residue remaining in the furnace body 3. The furnace body 3 is tilted downwards, so that the scraped solidified molten steel and residue inside can be discharged.

[0056] At the same time, the air pump 17 on the right side of the heat insulation gas storage box 12 is started, and the electric on / off valve 16 on the right side is started, so that the air pump 17 can draw the combustible gas in the heat insulation gas storage box 12 into the three-way pipe 15, and then enter the right jet plate 23 through the opened electric on / off valve 16 to blow air onto the right heat conduction plate 19, and start the igniter 18, so that the combustible gas sprayed out by the heat conduction plate 19 is ignited, thereby heating the right heat conduction plate 19.

[0057] Through the thermal conductivity of the furnace body 3 and its heat-conducting plate 19, the solidified molten steel in the vicinity is heated and melted. Then, with the cooperation of the scraper 13, the solidified molten steel that has been solidified and adhered to the inner wall of the furnace body 3 due to cooling is melted and loosened. Then, when the scraper 13 rotates in the opposite direction, since the solidified molten steel only melts the part of the bottom that is in contact with the furnace body 3, the solidified molten steel can fall out. Thus, when the scraper 13 moves away, the solidified molten steel quickly separates from the part of the bottom that has melted and re-solidified, thereby allowing the solidified molten steel to be discharged, thereby reducing the residue of solidified molten steel on the inner wall of the furnace body 3.

[0058] When the furnace body 3 is moved to the bottom, the lower electric on / off valve 16 is activated, allowing combustible gas to pass through the electric on / off valve 16 at the lower end of the three-way pipe 15. This combustible gas then enters the lower jet plate 23 and blows it onto the lower heat-conducting plate 19. The igniter 18 is activated, igniting the combustible gas ejected from the heat-conducting plate 19. This heats the lower heat-conducting plate 19, which in turn heats the bottom part of the inner wall of the furnace body 3 that is in contact with it. Consequently, the solidified molten steel in the vicinity is melted, and the steel melts on the scraper 1. With the cooperation of scraper 3, the solidified molten steel is scraped away. When scraper 13 rotates in the opposite direction, the solidified molten steel only melts the part at the bottom that is in contact with the furnace body 3, allowing the solidified molten steel to fall out. When scraper 13 moves away, the solidified molten steel quickly separates from the part at the bottom that has melted and re-solidified, allowing the solidified molten steel to be discharged. This reduces the residue of solidified molten steel on the inner wall of the furnace body 3, thus achieving automatic cleaning of solidified molten steel and avoiding the trouble caused by manual cleaning.

[0059] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A self-cleaning electric arc furnace, characterized in that, include; Support bracket (1); The furnace body (3) is located in the middle of the support bracket (1); Rotating clamps (2) are symmetrically arranged on both sides of the top of the support bracket (1) to clamp and fix the furnace body (3); A hot-melting scraping structure is disposed inside the furnace body (3); The hot melt scraping structure includes a scraper (13) and a three-way pipe (15). The scraper (13) is located inside the furnace body (3) and a heat-insulating gas storage box (12) is fixedly installed on its top. A placement groove (14) is opened in the middle of the scraper (13). Heat-conducting plates (19) are provided on the right side and bottom of the placement groove (14). The three-way pipe (15) is fixedly installed in the middle of the placement groove (14). The top of the three-way pipe (15) is fixedly connected to the heat-insulating gas storage box (12) and is equipped with an air pump (17). Electric on / off valves (16) are provided on the lower side and right side of the three-way pipe (15), and an air jet plate (23) is fixedly installed on its outer end. An igniter (18) is provided on the outer side of the air jet plate (23).

2. The self-cleaning electric arc furnace according to claim 1, characterized in that, A support plate (4) is fixedly installed on the top of the rotating clamp (2). An electric rotating disk (5) is provided inside the support plate (4). A lifting structure is provided on the top of the electric rotating disk (5). The lifting structure includes a positioning frame (6) and a lifting plate (8). The positioning frame (6) is fixedly installed on the top of the electric rotating disk (5), and an electric lifting screw (7) is movably installed in the middle. The lifting plate (8) is set on the surface of the electric lifting screw (7), and a rotating rod (11) is movably set on the right side. The side of the bottom of the rotating rod (11) is fixedly connected to the hot-melt scraping structure. A rotating unit is provided on the top of the lifting plate (8), so that the electric lifting screw (7) and the rotating rod (11) are connected in transmission.

3. A self-cleaning electric arc furnace according to claim 2, characterized in that, The rotating unit includes sprockets (9) and chains (10). The sprockets (9) are arranged in an array on the top of the lifting plate (8). The left sprocket (9) is movably installed on the left side of the lifting plate (8) and is movably connected to the electric lifting screw (7). The right sprocket (9) is located on the top of the right end of the lifting plate (8) and is fixedly connected to the rotating rod (11). The chains (10) are sleeved on the surface of the two sprockets (9).

4. A self-cleaning electric arc furnace according to claim 2, characterized in that, The top of the support bracket (1) on the left side is provided with a first groove (20), and the side of the first groove (20) is provided with a second groove (21). The bottom of the support plate (4) is fixedly installed with a slider (22), and the slider (22) is slidably disposed inside the first groove (20) and the second groove (21).

5. A self-cleaning electric arc furnace according to claim 1, characterized in that, The arc value of the heat-conducting plate (19) on the right side is equal to the arc value of the inner wall of the furnace body (3), and the length value of the heat-conducting plate (19) on the lower side is equal to the radius value of the inner wall of the furnace body (3).

6. A self-cleaning electric arc furnace according to claim 1, characterized in that, The width of the heat-conducting plates (19) on both sides is equal to the width of the placement groove (14), and the scraper (13) is an insulated scraper as a whole.

7. A self-cleaning electric arc furnace according to claim 1, characterized in that, The length of the jet plate (23) is less than the length of the corresponding heat-conducting plate (19), and the length of the igniter (18) is less than the length of the jet plate (23).

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