Energy-saving steelmaking converter

Abstract

The invention relates to the technical field of steelmaking, in particular to an energy-saving steelmaking converter which comprises a driving frame, a supporting frame and transmission rods and further comprises a converter body, a steel outlet pipe, a supporting block, a converter cover, a spraying pipe, a rotating rod, a direction adjusting assembly, a sealing assembly and a swinging assembly. The steel outlet pipe is connected to the right side of the top of the furnace body, the supporting blocks are connected to the front side and the rear side of the top of the furnace body, the furnace cover is connected between the two supporting blocks, the spraying pipe penetrates through the middle of the furnace cover, the rotating rod is connected to the interior of the furnace cover, and the direction adjusting assembly is connected to the side, close to the spraying pipe, of the rotating rod. According to the furnace, airflow is blown to the surface of molten steel, slag floating on the surface is pushed away from a steel pipe, and then the purpose of preventing the molten steel from carrying the slag to be discharged is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of steelmaking, in particular to an energy-saving steelmaking converter. Background Art

[0002] A converter refers to a rotating cylindrical oxygen-blowing steelmaking container. Due to its advantages such as fast production speed and large output, it is the most commonly used steelmaking equipment.

[0003] The process of converter steelmaking is: using molten iron, scrap steel and ferroalloys as main raw materials, and putting the main raw materials into the converter, by injecting high-pressure oxygen into the inner cavity of the converter, the oxygen and the high-temperature molten iron undergo a chemical reaction, thereby achieving the purpose of removing impurities. In the process of steelmaking, impurities in the molten steel will react with oxygen and slag-forming materials to form slag, which will float on the surface of the molten steel. When the molten steel is discharged through the steel outlet pipe, a stable discharge water flow will be formed at the steel outlet pipe, and then a drainage vortex will be formed in the inner cavity of the converter. The vortex will cause the slag originally floating on the surface of the molten steel to be discharged together with the molten steel, resulting in poor quality of the discharged molten steel.

[0004] The prior art provides some solutions, such as the converter and its slag retaining device with publication number CN110527780B, which puts slag retaining balls into the steel tapping pipe, makes the slag retaining balls float between the molten steel and the slag, and the suction force generated at the steel tapping port acts on the slag retaining balls, thereby avoiding the inhalation of slag. At the same time, the slag retaining balls are blocked between the slag and the molten steel, thereby achieving the purpose of slag retaining. However, at the end of steel tapping, the molten steel content decreases, the height of the slag retaining balls decreases, and the ratio of molten steel to slag changes, and the content of slag in the molten steel increases. At the same time, in order to better discharge the molten steel at the end, the inclination angle of the furnace body is large, which makes it easy for the slag to flow and accumulate in the molten steel. When accumulating, part of the slag sinks, causing the slag to be close to the lower side of the slag retaining balls, which is easy to carry the slag out when the molten steel is discharged, thereby affecting the quality of the molten steel in the later stage.

[0005] Therefore, an energy-saving steelmaking converter is proposed. Summary of the invention

[0006] The object of the present invention is to provide an energy-saving steelmaking converter, which solves the problem of reduced quality of molten steel caused by slag carried by molten steel during steel tapping. By forming an air flow to blow on the surface of the molten steel, the slag floating on the surface of the molten steel is pushed away from the steel tapping pipe, thereby achieving the purpose of preventing the molten steel from being carried by slag during steel tapping.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] An energy-saving steelmaking converter comprises a driving frame, a supporting frame and a transmission rod, wherein two supporting frames are arranged at the front and rear, and the number of the transmission rods is two and they are respectively connected to the two supporting frames, the driving frame is arranged at the front end of the rear supporting frame, the rear transmission rod passes through the supporting frame and is connected to the power output end of the driving frame, and also comprises a furnace body, a steel outlet pipe, a supporting block, a furnace cover, a nozzle, a rotating rod, a direction adjustment component, a closing component and a swinging component, the furnace body is connected between the two transmission rods, the top of the furnace body is provided with an open opening, the steel outlet pipe is connected to the right side of the top of the furnace body, the supporting block is connected to the front and rear sides of the top of the furnace body, and the furnace cover is connected to the two The nozzle runs through the middle of the furnace cover, the rotating rod is connected to the inside of the furnace cover, the direction-adjusting assembly is connected to the side of the rotating rod close to the nozzle, the closing assembly is connected to the lower slope of the furnace cover, the swing assembly is connected to the side of the rotating rod away from the furnace body, the center of gravity of the furnace cover is located at the lower left of itself, and the furnace body is divided into slag discharge shape and material discharge shape according to the left and right tilting state. The direction-adjusting assembly adjusts the ventilation direction of the furnace cover according to the state of the furnace body. During slag discharge, the furnace cover gathers the airflow to flow from right to left in the furnace body cavity. During material discharge, the furnace cover diffuses the airflow to flow from left to right. The periodic change of airflow intensity causes the swing assembly to drive the furnace cover to swing periodically.

[0009] By setting the furnace cover, the furnace cover can be kept tilted, and the flame generated when the nozzle injects oxygen has sufficient space to splash out, thereby ensuring the safety of steelmaking, making the furnace body tilt to the right, and then entering the discharging state. By ventilating the left side of the furnace cover in the discharging state, strong wind flow acts on the steel outlet pipe, blowing the slag to move, causing the furnace body to tilt to the left, and then entering the slag discharging state. In the slag discharging state, the right side of the furnace cover is ventilated, so that the gathered strong wind flows in the inner cavity of the furnace body, and an airflow circulation is formed in the middle of the inner cavity of the furnace body, so that the slag accumulated in the middle of the molten steel surface is quickly discharged.

[0010] Preferably, the furnace cover includes a through hole, a variable flow hole and a perforation, the through hole is opened on the upper inclined surface of the furnace cover, the nozzle includes a corrugated sleeve and a tube body, the corrugated sleeve is connected in the through hole, the tube body is connected in the corrugated sleeve, the variable flow hole is opened on the side of the furnace cover, the perforation is opened on the lower inclined surface of the furnace cover, the through hole and the perforation are both elliptical, and the perforation is gap-connected to the tube body.

[0011] Through the above scheme, the area of ​​the perforation is larger than the area of ​​the connection between the tube body and the perforation, thereby facilitating the nozzle to move downward through the perforation, thereby facilitating the nozzle to enter the inner cavity of the furnace body.

[0012] Preferably, the variable flow hole includes an air collecting section, an air expansion section and an air gathering section, the air collecting section is opened in the middle of the furnace cover, the air expansion section is opened on the left side of the furnace cover, and the air gathering section is opened on the right side of the furnace cover, the air expansion section and the air gathering section are both connected to the air collecting section, and the transverse cross-sections of the air expansion section and the air gathering section are both trumpet-shaped, the smaller end of the air expansion section faces the air collecting section, and the larger end of the air gathering section faces the air collecting section.

[0013] Through the above scheme, the air expansion section can discharge the exhausted airflow in a diffused state, so that the airflow has a larger blowing area, thereby achieving the purpose of isolating the slag effectively. The air gathering section makes the airflow discharged in a gathered state and accelerates the flow of the airflow. The flow path of the airflow is small, so that the slag in the middle of the furnace body outlet can be discharged quickly, so that the slag forms a flowing state, thereby achieving the purpose of rapid discharge.

[0014] Preferably, the lower side of the wind expansion section is inclined, and the lower side of the wind gathering section is inclined.

[0015] Through the above scheme, when exhausting air in the air expansion section or the air gathering section, a deflection force will be generated on the furnace cover, causing the furnace cover to rotate slightly, thereby making the range of isolating slag larger during discharge. When discharging slag, the strength of the slag discharge wind changes, making it easier for the slag on both sides to flow to the middle, thereby achieving the purpose of improving efficiency.

[0016] Preferably, the direction adjustment assembly includes a swing arm, a baffle, a slide, a pressure plate, a guide rod, a return spring and a fixed plate, the swing arm is connected to the end of the rotating rod close to the tube body, the baffle is connected to the left and right sides of the air collecting section, the slide is connected to the side of the baffle close to the rotating rod, the pressure plate is connected to the side of the slide close to the rotating rod, the guide rod is connected to the surface of the pressure plate and is located on the lower side of the slide, the return spring is wound on the surface of the guide rod, and the fixed plate is connected to the end of the guide rod away from the pressure plate.

[0017] Through the above scheme, the swing arm is fan-shaped, and when the swing arm rotates, the pressure plate can be squeezed, so that the pressure plate drives the baffle door to open through the slide, and the purpose of adjusting the wind direction is achieved by rotating the swing arm in different directions.

[0018] Preferably, the connection point between the slide and the baffle is located at the lower side of the baffle and the wind collecting point, and the baffle is rectangular, thereby being able to well seal the wind collecting section, thereby enabling one-side ventilation and effectively ensuring the air volume.

[0019] Preferably, the closing assembly includes a rotating groove, a baffle and a torsion spring, the rotating groove is opened on the lower inclined surface of the furnace cover, the baffle is rotatably connected in the rotating groove, the torsion spring is arranged at the connection point between the baffle and the rotating groove, one end of the torsion spring is connected to the baffle, and the other end of the torsion spring is connected to the rotating groove, and the top of the baffle is inclined.

[0020] Through the above scheme, the top of the baffle is inclined, and when the nozzle moves downward, pressure is formed on the inclined surface of the baffle, causing the baffle to rotate, thereby connecting the perforation with the outside world, achieving the purpose of facilitating the nozzle to extend into the furnace cavity.

[0021] Preferably, the swing assembly includes a rectangular plate, an arc spring and an extension frame, the rectangular plate is connected to the end of the rotating rod away from the tube body, the arc spring is connected to one side of the rectangular plate, and the extension frame is connected to the end of the furnace cover away from the tube body, and the furnace cover is deflected when the arc spring is deformed.

[0022] Through the above scheme, when the furnace body rotates, the arc spring can be deformed, thereby causing the furnace cover to deflect, thereby achieving the purpose of adjusting the wind direction.

[0023] Preferably, the open mouth is inclined, and the lower end of the open mouth is away from the steel outlet pipe.

[0024] Through the above scheme, the rotation angle of the furnace body can be reduced during slag discharge, thereby achieving the purpose of energy saving. At the same time, the inclined opening is convenient for placing the tube body after rotation, thereby reducing the subsequent docking process.

[0025] Preferably, the inner wall of the steel outlet pipe includes a flow expansion section and a flow stabilizing section, the flow expansion section is connected to the furnace body, the flow stabilizing section is connected to the end of the flow expansion section away from the furnace body, the flow expansion section is truncated cone-shaped, the smaller end of the flow expansion section faces the inner cavity of the furnace body, and the diameter value of the flow stabilizing section is equal to the diameter value of the end of the flow expansion section away from the furnace body.

[0026] Through the above scheme, the expansion section is in a truncated cone shape, which reduces the flow rate between the inner cavity of the furnace body and the outside world, effectively stabilizes the temperature of the inner cavity of the furnace body, and achieves the purpose of energy saving. The stabilizing section is used to guide the outflowing molten steel to avoid splashing along the inner wall of the expansion section, thereby facilitating the docking of the molten steel.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] 1. The present invention solves the problem of reduced quality of molten steel caused by discharge of slag carried by molten steel during steel tapping. By arranging a furnace cover, the furnace body rotates and makes the air gathering section face the top of the furnace body inner cavity, the swinging assembly intermittently adjusts the angle of the air gathering section, and strong wind acts on the surface of the molten steel through the air gathering section, blowing the slag on the surface of the molten steel toward the open port, thereby quickly discharging the slag and reducing the slag content in the furnace body. During steel tapping, the furnace body rotates and makes the air expansion section face the surface of the molten steel, the swinging assembly intermittently adjusts the angle of the air expansion section, and strong wind acts on the surface of the molten steel through the air expansion section, blowing the slag on the surface of the molten steel away from the steel tapping pipe, thereby effectively avoiding the discharge of slag carried by the molten steel during the slag discharge process.

[0029] 2. By setting the direction adjustment component, the center of gravity of the furnace cover is biased to the lower left corner, so that the furnace cover is set in an inclined shape. When the furnace body rotates, the swing arm will be squeezed with the pressure plate close to the side of the furnace body, so that the slide will squeeze the baffle door, and the baffle door close to the side of the furnace body will be opened, so that the wind force is guided to the inner cavity of the furnace body by the inclined furnace cover. When slag is discharged, the baffle doors at the wind collecting section and the wind gathering section are closed, and the wind flow is tilted upward. The wind flow is blocked by the wall of the furnace body and forms a reflux on the surface of the molten steel, pushing the slag to the open port, thereby effectively reducing the slag content in the furnace body. When steel is discharged, the baffle doors at the wind collecting section and the air expansion section are closed, and the wind flow is tilted downward, pushing the slag away from the steel tapping pipe, thereby reducing the slag content at the molten steel. At the same time, the wind flow acts on the steel tapping pipe, which will destroy the vortex at the steel tapping pipe, thereby further ensuring the quality of the molten steel.

[0030] 3. By setting a swing component, when the furnace body rotates, the arc spring will pull the furnace cover to rotate, thereby changing the inclination angle of the furnace cover. By injecting strong wind, the inclination angle of the furnace cover is restored. By periodically changing the size of the wind force, the furnace cover will swing periodically, thereby improving the blowing effect on the slag. When the wind force slows down, it can give the slag space to flow, thereby making the slag evenly distributed, avoiding the unidirectional accumulation of the slag, and effectively ensuring the quality of the molten steel. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0032] Figure 2 It is a structural schematic diagram of the furnace cover part of the present invention;

[0033] Figure 3 It is a structural schematic diagram of the direction adjustment component part of the present invention;

[0034] Figure 4 For the present invention Figure 3 A magnified schematic diagram of point A;

[0035] Figure 5 It is a schematic structural diagram of the closed component part of the present invention;

[0036] Figure 6 It is a structural schematic diagram of the swing assembly part of the present invention;

[0037] Figure 7 This is a schematic diagram of the slag discharge state of the present invention;

[0038] Figure 8 It is a schematic diagram of the state of steel tapping according to the present invention.

[0039] In the figure: 1, driving frame; 2, supporting frame; 3, transmission rod; 4, furnace body; 401, opening; 5, steel outlet pipe; 501, flow expansion section; 502, flow stabilization section; 6, supporting block; 7, furnace cover; 701, through hole; 702, flow change hole; 7021, air collection section; 7022, air expansion section; 7023, air collection section; 703, perforation; 8, nozzle; 801, corrugated sleeve; 802, pipe body; 9, Rotating rod; 10. Direction adjustment assembly; 1001. Swing arm; 1002. Baffle; 1003. Slide; 1004. Pressure plate; 1005. Guide rod; 1006. Return spring; 1007. Fixed plate; 11. Closing assembly; 1101. Rotating groove; 1102. Baffle; 1103. Torsion spring; 12. Swinging assembly; 1201. Rectangular plate; 1202. Arc spring; 1203. Extension frame. DETAILED DESCRIPTION

[0040] The following is a clear and complete description of the technical solution of the embodiment of the present invention in conjunction with the drawings of the embodiment of the present invention, so that its working state and structural features are more detailed. Obviously, the described embodiment is only a partial embodiment of the present invention, not a complete embodiment. Based on the embodiment of the present invention, other embodiments obtained by ordinary technicians in this field without making any creativity belong to the protection scope of the present invention.

[0041] See also Figures 1 to 8 The present invention provides an energy-saving steelmaking converter, and the technical solution is as follows:

[0042] For details, please refer to Figures 1 to 8, an energy-saving steelmaking converter, comprising a driving frame 1, a supporting frame 2 and a transmission rod 3, wherein the supporting frame 2 is provided with two at the front and rear, the number of the transmission rods 3 is two and they are respectively connected to the two supporting frames 2, the driving frame 1 is provided at the front end of the rear supporting frame 2, the rear transmission rod 3 penetrates the supporting frame 2 and is connected to the power output end of the driving frame 1, and also comprises a furnace body 4, a steel outlet pipe 5, a support block 6, a furnace cover 7, a nozzle 8, a rotating rod 9, a direction adjustment component 10, a closing component 11 and a swinging component 12, the furnace body 4 is connected between the two transmission rods 3, the driving frame 1 drives the furnace body 4 to rotate through the transmission rod 3, an open port 401 is provided on the top of the furnace body 4, the steel outlet pipe 5 is connected to the right side of the top of the furnace body 4, the steel outlet pipe 5 is communicated with the inner cavity of the furnace body 4, the support block 6 is connected to the front and rear sides of the top of the furnace body 4, the furnace cover 7 is connected between two support blocks 6, the furnace cover 7 is rotatably connected to the support block 6, the nozzle 8 runs through the middle of the furnace cover 7, the rotating rod 9 is connected to the inside of the furnace cover 7, the adjusting component 10 is connected to the side of the rotating rod 9 close to the nozzle 8, the closing component 11 is connected to the lower slope of the furnace cover 7, the swinging component 12 is connected to the side of the rotating rod 9 away from the furnace body 4, the center of gravity of the furnace cover 7 is located at the lower left side of itself, and the furnace body 4 will not drive the furnace cover 7 to rotate when it rotates. The furnace body 4 is divided into a slag discharge shape and a material discharge shape according to the left and right tilting state. The adjusting component 10 adjusts the ventilation direction of the furnace cover 7 according to the state of the furnace body 4. When discharging slag, the furnace cover 7 gathers the wind flow to flow from right to left in the inner cavity of the furnace body 4. When discharging, the furnace cover 7 diffuses the wind flow to flow from left to right. The wind flow intensity changes periodically, so that the swinging component 12 drives the furnace cover 7 to swing periodically.

[0043] By setting the furnace cover 7, the center of gravity of the furnace cover 7 is located at the lower left side thereof, so that the furnace cover 7 can be kept tilted, and the slag outlet is in a semi-open state, so that the flame generated by the nozzle 8 when injecting oxygen has sufficient space to splash out, thereby ensuring the safety of steelmaking, and at the same time reducing the leakage of the inner cavity temperature of the furnace body 4, thereby achieving the purpose of energy saving. The driving frame 1 drives the furnace body 4 to rotate clockwise through the transmission rod 3, so that the furnace body 4 tilts to the right, and then enters the discharge state. By ventilating the left side of the furnace cover 7 in the discharge state, the lower left side of the furnace cover 7 faces the steel outlet pipe 5, and then the strong wind flow acts on the steel outlet pipe 5. On the one hand, it can blow the slag to move, thereby effectively ensuring the quality of the molten steel, and on the other hand, it can destroy the vortex generated by the discharge, thereby causing the discharge port to lose its alignment with the upper The suction force of the surface slag is used to improve the discharge quality of the molten steel. The driving frame 1 drives the furnace body 4 to rotate counterclockwise through the transmission rod 3, so that the furnace body 4 tilts to the left, and then it is in the slag discharge state. In the slag discharge state, the right side of the furnace cover 7 is ventilated. At this time, the upper right side of the furnace cover 7 faces the top of the inner cavity of the furnace body 4, so that the gathered strong wind flows in the inner cavity of the furnace body 4. Blocked by the inner cavity of the furnace body 4, an air flow circulation is formed in the middle of the inner cavity of the furnace body 4, so that the slag accumulated in the middle of the molten steel surface is quickly discharged. Moreover, since the opening 401 is arc-shaped, when the slag in the middle floats on the surface of the molten steel, the slag is farther from the opening 401, so it is easy to discharge. At the same time, after the slag in the middle is discharged, the slag in the furnace can move to the middle, thereby effectively improving the slag discharge efficiency.

[0044] As an embodiment of the present invention, refer to Figure 2 , Figure 7 and Figure 8The furnace cover 7 includes a through hole 701, a variable flow hole 702 and a through hole 703. The through hole 701 is opened on the upper inclined surface of the furnace cover 7. The nozzle 8 includes a corrugated sleeve 801 and a tube body 802. The corrugated sleeve 801 is connected to the through hole 701, and the tube body 802 is connected to the corrugated sleeve 801. When the tube body 802 moves up to the end connected with the corrugated sleeve 801, the corrugated sleeve 801 limits the lower end of the tube body 802, so that the tube body 802 is always connected to the furnace cover 7, thereby avoiding the need to re-align the tube body 802 after the slag is discharged. The work efficiency is effectively improved. When the furnace body 7 rotates, the tube body 802 moves adaptively to keep the tube body 802 connected to the furnace cover 7. When the angle of the tube body 802 changes, the corrugated sleeve 801 can adaptively change the connection angle with the tube body. The top of the tube body 802 is connected to the steelmaking gas and the discharge gas respectively. The discharge gas is required not to react with the molten steel and the slag. The variable flow hole 702 is opened on the side of the furnace cover 7, and the through hole 703 is opened on the lower slope of the furnace cover 7. The through hole 701 and the through hole 703 are both elliptical. The perforation 703 is connected with the tube body 802 through a gap, so that the tube body 802 can pass through the perforation 703. The variable flow hole 702 includes a wind collecting section 7021, a wind expansion section 7022 and a wind gathering section 7023. The wind collecting section 7021 is opened in the middle of the furnace cover 7. After the tube body 802 moves up, the lower end of the tube body 802 is in the wind collecting section 7021. The wind expansion section 7022 is opened on the left side of the furnace cover 7, and the wind gathering section 7023 is opened on the right side of the furnace cover 7. The wind expansion section 7022 and the wind gathering section 7023 are both connected to the wind collecting section 7021. Generally, the transverse cross-sections of the air expansion section 7022 and the air gathering section 7023 are both trumpet-shaped, with the smaller end of the air expansion section 7022 facing the air gathering section 7021, and the larger end of the air gathering section 7023 facing the air gathering section 7021. The lower side of the air expansion section 7022 is inclined, and the lower side of the air gathering section 7023 is inclined. When wind force acts on the lower inclined surface of the air expansion section 7022 and the lower inclined surface of the air expansion section 7022, the air expansion section 7022 or the air expansion section 7023 will be subjected to a deflection force, causing the furnace cover 7 to rotate.

[0045] By setting a through hole 701, a corrugated sleeve 801 is installed in the through hole 701, and a tube body 802 is installed in the corrugated sleeve 801. When oxygen is sprayed, the tube body 802 passes through the perforation 703 and extends to the inner cavity of the furnace body 4. The area value of the perforation 703 is greater than the area value of the connection between the tube body 802 and the perforation 703, so that the tube body 802 and the perforation 703 are convenient to extend to the inner cavity of the furnace body 4. When oxygen is not sprayed, the tube body 802 moves up, and the lower end of the tube body 802 is limited by the corrugated sleeve 801. The lower end of the tube body 802 is in the variable hole 702. At this time, the perforation 703 is blocked by the closing component 11, so that the airflow discharged from the tube body 802 at this time can be guided to the left and right sides by the variable hole 702. After the tube body 802 moves up, it is in the variable flow hole 702. At this time, the perforation 703 is blocked by the closing component 11, and the tube body 802 is blocked when the air is discharged and will flow to the air expansion section 7022 or the air gathering section 7023. When it is in the discharging state, the wind is discharged from the air expansion section 7022. The expanded trumpet shape of the air expansion section 7022 can make the wind flow have a larger blowing area, thereby achieving the purpose of isolating the slag effectively. When it is in the slag discharging state, the wind is discharged from the air gathering section 7023. The gathered trumpet shape of the air gathering section 7023 can gather the wind flow, so that the slag floating in the middle of the molten steel can flow quickly, thereby driving the slag on both sides to move closer to the middle, thereby achieving the purpose of rapid slag discharge.

[0046] As an embodiment of the present invention, refer to Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 The direction adjustment assembly 10 includes a swing arm 1001, a baffle 1002, a slide 1003, a pressure plate 1004, a guide rod 1005, a return spring 1006 and a fixed plate 1007. The swing arm 1001 is connected to one end of the rotating rod 9 close to the tube body 802. The baffle 1002 is connected to the left and right sides of the air collecting section 7021. The baffle 1002 closes the left and right sides of the air collecting section 7021. The slide 1003 is connected to one side of the baffle 1003 close to the rotating rod 9. The slide 1003 is rotatably connected to the baffle 1003. The pressure plate 1004 is connected to one side of the slide 1003 close to the rotating rod 9 ... 1 contacts the pressure plate 1004 when rotating, the guide rod 1005 is connected to the surface of the pressure plate 1004 and is located at the lower side of the slide 1003, the return spring 1006 is wound on the surface of the guide rod 1005, the fixed plate 1007 is connected to one end of the guide rod 1005 away from the pressure plate 1004, one end of the return spring 1006 is connected to the fixed plate 1007, and the other end of the return spring 1006 is connected to the pressure plate 1004. When the pressure plate 1004 is squeezed and moved by the swing arm 1001, the return spring 1006 is compressed. When the pressure plate 1004 loses the squeeze, the return spring 1006 pushes the pressure plate 1004 to return.

[0047] The rotating rod 9 is connected to the supporting block 6, and the connection point between the slide 1003 and the baffle door 1002 is located at the lower side of the baffle door 1002 and the wind collecting point, so that the movement of the slide 1003 can reach the top baffle door 1002 to open, and the swing arm 1001 rotates unilaterally with the furnace body 4, so that the movement of the baffle door 1002 only releases the closure of the wind collecting section 7021 and the wind expanding section 7022 or the closure of the wind collecting section 7021 and the wind gathering section 7023 on one side. The closing component 11 includes a rotating groove 1101, a baffle 1102 and a torsion spring 1103. 1101 is provided on the lower slope of the furnace cover 7, the baffle 1102 is rotatably connected in the rotating groove 1101, the torsion spring 1103 is provided at the connection point between the baffle 1102 and the rotating groove 1101, one end of the torsion spring 1103 is connected to the baffle 1102, and the other end of the torsion spring 1103 is connected to the rotating groove 1101, the top of the baffle 1102 is inclined, the tube body 802 moves downward and contacts the baffle 1102, so that the baffle 1102 is inclined, the torsion spring 1103 is deformed, and after the tube body 802 moves upward, the torsion spring 1103 is 03 drives the baffle 1102 to reset, thereby causing the airflow to gather at the air collecting section 7021 and flow out from one side of the air collecting section 7021. The swing assembly 12 includes a rectangular plate 1201, an arc spring 1202 and an extension frame 1203. The rectangular plate 1201 is connected to the end of the rotating rod 9 away from the tube body 802. The arc spring 1202 is connected to one side of the rectangular plate 1201. The extension frame 1203 is connected to the end of the furnace cover 7 away from the tube body 802. When the arc spring 1202 is deformed, the furnace cover 7 is deflected, and the furnace body 4 rotates, the arc spring 1202 is deformed, the open mouth 401 is inclined, the lower end of the open mouth 401 is far away from the steel outlet pipe 5, the inner wall of the steel outlet pipe 5 includes a flow expansion section 501 and a flow stabilizing section 502, the flow expansion section 501 is connected to the furnace body 4, the flow stabilizing section 502 is connected to the end of the flow expansion section 501 away from the furnace body 4, the flow expansion section 501 is truncated cone-shaped, the smaller end of the flow expansion section 501 faces the inner cavity of the furnace body 4, and the diameter value of the flow stabilizing section 502 is equal to the diameter value of the end of the flow expansion section 501 away from the furnace body 4.

[0048] By setting the steel outlet pipe 5, the expansion section 501 is in a truncated cone shape, and the end close to the furnace body 4 is smaller, thereby reducing the flow rate between the inner cavity of the furnace body 4 and the outside, effectively stabilizing the temperature of the inner cavity of the furnace body 4, and achieving the purpose of energy saving. At the same time, in the process of discharging, due to the injection of gas, the inner cavity of the furnace body 4 is pressurized. Under the action of pressure, the molten steel is discharged quickly. The end of the expansion section 501 away from the furnace body 4 is larger, thereby slowing down the flow speed of the rapidly flowing molten steel, thereby reducing the splashing caused by the large impact force of the rapidly flowing molten steel under the high-pressure environment. The slowed-down molten steel is then guided by the steady flow section 502 to avoid the molten steel from splashing along the inner wall of the expansion section 501, thereby facilitating the docking of the molten steel.

[0049] When discharging molten steel, the slag content in the furnace body 4 is first reduced, and then the molten steel is discharged. Specifically, when discharging slag, the pipe body 802 moves up to the variable flow hole 702, the driving frame 1 drives the furnace body 4 to rotate counterclockwise through the transmission rod 3, and connects the wind collecting section 7021 with the wind gathering section 7023 through the direction adjustment component 10, and the pipe body 802 is filled with high-pressure airflow to form a wind flow, which acts on the inner cavity of the furnace body 4 through the wind gathering section 7023, and forms a flow loop along the inner cavity of the furnace body 4 to drive the slag from the rear to the rear. The slag content in the furnace body 4 is greatly reduced by moving forward to discharge the furnace body, and then the pipe body 802 moves up to the variable flow hole 702 during subsequent discharge, and the driving frame 1 drives the furnace body 4 to rotate clockwise through the transmission rod 3, and connects the air collecting section 7021 with the air expanding section 7022 through the direction adjustment component 10, so that the wind acts on the surface of the molten steel and then the wind is discharged from left to right along the top of the furnace body 4, blowing the slag on the surface of the molten steel to flow deep into the furnace body 4, so that the slag is away from the steel outlet pipe 5, so as to ensure the discharge quality of the molten steel;

[0050] When discharging slag, the tube body 802 moves up to the variable flow hole 702, and the lower end of the tube body 802 is limited by the corrugated sleeve 801. The driving frame 1 drives the furnace body 4 to rotate counterclockwise through the transmission rod 3, so that the steel pipe 5 faces the left side. When the furnace body 4 rotates, it will drive the rotating rod 9 to rotate. The rotating rod 9 opens the side baffle 1002 through the swing arm 1001, the pressure plate 1004 and the slide 1003. At this time, the wind collecting section 7021 is connected with the wind gathering section 7023. At the same time, the rotation of the furnace body 4 will cause the arc spring 1202 to pull the extension frame 1203. The extension frame 1203 is connected to the furnace cover 7 and drives the furnace cover 7 to rotate, so that the inclination angle of the furnace cover 7 is increased, and the tube body 802 is ventilated. The wind flow is discharged through the wind gathering section 7023 and acts on the lower inclined surface of the wind gathering section 7023, so that the wind gathering section 7 023 generates a deflection force, and the inclination angle of the furnace cover 7 decreases. When the wind force is strong, the wind-gathering section 7023 rotates toward the right end of the top of the inner cavity of the furnace body 4, which is blocked by the inner cavity of the furnace body 4, and an airflow from right to left is formed on the surface of the molten steel, and then the wind carries the slag and is discharged from the open port 401. At the same time, the wind is affected by the wind-gathering section 7023, and the air duct is narrow, so that a strong airflow is formed only in the middle of the molten steel, so that the slag in the middle can be discharged quickly. When the wind force decreases, the wind-gathering section 7023 rotates toward the middle of the top of the inner cavity of the furnace body 4, and the airflow from right to left decreases. At this time, the slag on both sides moves closer to the middle, which makes it easier to discharge the slag. Since the open port 401 is arc-shaped, when discharging slag, it is only discharged in the middle, which effectively reduces the discharge amount of molten steel and effectively increases the single steelmaking amount.

[0051] During discharge, the tube body 802 moves up to the variable flow hole 702, and the lower end of the tube body 802 is limited by the corrugated sleeve 801. The driving frame 1 drives the furnace body 4 to rotate clockwise through the transmission rod 3, so that the steel outlet pipe 5 faces downward. When the furnace body 4 rotates, the side baffle 1002 is opened, so that the air expansion section 7022 is connected with the air collection section 7021. The rotation of the furnace body 4 causes the arc spring 1202 to squeeze the extension frame 1203. The extension frame 1203 is connected to the furnace cover 7 to drive the furnace cover 7 to rotate, so that the inclination angle of the furnace cover 7 is reduced, and the tube body 802 is ventilated, and the air flows smoothly. The molten steel is discharged through the air expansion section 7022, and the wind flow acts on the lower inclined surface of the air expansion section 7022, so that the air expansion section 7022 generates a deflection force, and the inclination angle of the furnace cover 7 increases. When the wind force is small, the air expansion section 7022 is directed toward the position of the left end of the lower side of the inner cavity of the rotating furnace body 4. As the wind force increases, the air expansion section 7022 is directed toward the position close to the right end of the lower side of the inner cavity of the rotating furnace body 4, thereby causing the slag on the surface of the molten steel to move to the left, and the slag is away from the steel outlet pipe 5. At the same time, when the slag is close to the steel outlet pipe 5, the wind flow is strong, which effectively avoids the formation of vortex at the steel outlet pipe 5 to carry the slag;

[0052] After slag or material discharge is completed, the driving frame 1 drives the furnace body 4 to reset through the transmission rod 3, the swing arm 1001 forms pressure on the pressure plate 1004, and the reset spring 1006 drives the pressure plate 1004 to reset, thereby allowing the baffle door 1002 to close both sides of the air collecting section 7021.

[0053] Although the embodiments of the present invention have been described, it will be apparent to those skilled in the art that changes and modifications may be made to the embodiments to obtain other effects with an understanding of the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An energy-saving steelmaking converter, comprising a drive frame (1), a support frame (2) and a transmission rod (3), characterized in that: The furnace body (4) further comprises a furnace body (4), a steel outlet pipe (5), a support block (6), a furnace cover (7), a nozzle (8), a rotating rod (9), a direction adjustment component (10), a closing component (11) and a swinging component (12), wherein the furnace body (4) is connected between two transmission rods (3), an opening (401) is provided at the top of the furnace body (4), the steel outlet pipe (5) is connected to the right side of the top of the furnace body (4), the support block (6) is connected to the front and rear sides of the top of the furnace body (4), the furnace cover (7) is connected between the two support blocks (6), the nozzle (8) passes through the middle of the furnace cover (7), the rotating rod (9) is connected to the inside of the furnace cover (7), the direction adjustment component (10) is connected to the rotating rod (9), and the direction adjustment component (10) is connected to the rotating rod (9). The rod (9) is close to the nozzle (8), the closing component (11) is connected to the lower slope of the furnace cover (7), the swing component (12) is connected to the side of the rotating rod (9) away from the furnace body (4), the center of gravity of the furnace cover (7) is located at the lower left of the furnace cover (7), and the furnace body (4) is divided into a slag discharge state and a material discharge state according to the left and right tilting state. The direction adjustment component (10) adjusts the ventilation direction of the furnace cover (7) according to the state of the furnace body (4). When slag is discharged, the furnace cover (7) gathers the airflow to flow from right to left in the inner cavity of the furnace body (4), and when material is discharged, the furnace cover (7) diffuses the airflow to flow from left to right. The airflow intensity changes periodically, so that the swing component (12) drives the furnace cover (7) to swing periodically.

2. The energy-saving steelmaking converter according to claim 1, characterized in that: The furnace cover (7) comprises a through hole (701), a variable flow hole (702) and a through hole (703); the through hole (701) is provided on the upper inclined surface of the furnace cover (7); the nozzle (8) comprises a corrugated sleeve (801) and a tube body (802); the corrugated sleeve (801) is connected to the through hole (701); the tube body (802) is connected to the corrugated sleeve (801); the variable flow hole (702) is provided on the side of the furnace cover (7); the through hole (701) and the through hole (703) are both elliptical; the through hole (703) is gap-connected to the tube body (802).

3. The energy-saving steelmaking converter according to claim 2, characterized in that: The variable flow hole (702) comprises an air collecting section (7021), an air expansion section (7022) and an air gathering section (7023); the air collecting section (7021) is arranged in the middle of the furnace cover (7); the air expansion section (7022) is arranged on the left side of the furnace cover (7); and the air gathering section (7023) is arranged on the right side of the furnace cover (7); the air expansion section (7022) and the air gathering section (7023) are both connected to the air collecting section (7021); the transverse cross sections of the air expansion section (7022) and the air gathering section (7023) are both trumpet-shaped; the smaller end of the air expansion section (7022) faces the air collecting section (7021), and the larger end of the air gathering section (7023) faces the air collecting section (7021).

4. The energy-saving steelmaking converter according to claim 3, characterized in that: The lower side of the wind expansion section (7022) is inclined, and the lower side of the wind gathering section (7023) is inclined.

5. The energy-saving steelmaking converter according to claim 3, characterized in that: The direction adjustment assembly (10) comprises a swing arm (1001), a baffle (1002), a slide (1003), a pressure plate (1004), a guide rod (1005), a return spring (1006) and a fixed plate (1007); the swing arm (1001) is connected to one end of the rotating rod (9) close to the tube body (802); the baffle (1002) is connected to the left and right sides of the air collecting section (7021); the slide (1003) is connected to the baffle (1002) is close to the side of the rotating rod (9), the pressure plate (1004) is connected to the side of the slide (1003) close to the rotating rod (9), the guide rod (1005) is connected to the surface of the pressure plate (1004) and is located on the lower side of the slide (1003), the return spring (1006) is wound around the surface of the guide rod (1005), and the fixed plate (1007) is connected to the end of the guide rod (1005) away from the pressure plate (1004).

6. The energy-saving steelmaking converter according to claim 5, characterized in that: The connection point between the slide (1003) and the baffle door (1002) is located at the lower side of the baffle door (1002) and the wind collection point, and the baffle door (1002) is rectangular.

7. The energy-saving steelmaking converter according to claim 5, characterized in that: The closing component (11) comprises a rotating groove (1101), a baffle (1102) and a torsion spring (1103); the rotating groove (1101) is provided on the lower inclined surface of the furnace cover (7); the baffle (1102) is rotatably connected in the rotating groove (1101); the torsion spring (1103) is provided at the connection point between the baffle (1102) and the rotating groove (1101); one end of the torsion spring (1103) is connected to the baffle (1102), and the other end of the torsion spring (1103) is connected to the rotating groove (1101); and the top of the baffle (1102) is inclined.

8. The energy-saving steelmaking converter according to claim 7, characterized in that: The swing assembly (12) comprises a rectangular plate (1201), an arc spring (1202) and an extension frame (1203); the rectangular plate (1201) is connected to one end of the rotating rod (9) away from the tube body (802); the arc spring (1006) is connected to one side of the rectangular plate (1201); the extension frame (1203) is connected to one end of the furnace cover (7) away from the tube body (802); when the arc spring (1202) is deformed, the furnace cover (7) is deflected.

9. The energy-saving steelmaking converter according to claim 8, characterized in that: The open opening (401) is inclined, and the lower end of the open opening (401) is away from the steel outlet pipe (5).

10. The energy-saving steelmaking converter according to claim 9, characterized in that: The inner wall of the steel outlet pipe (5) comprises a flow expansion section (501) and a flow stabilizing section (502); the flow expansion section (501) is connected to the furnace body (4); the flow stabilizing section (502) is connected to the end of the flow expansion section (501) away from the furnace body (4); the flow expansion section (501) is in a truncated cone shape; the smaller end of the flow expansion section (501) faces the inner cavity of the furnace body (4); and the diameter of the flow stabilizing section (502) is equal to the diameter of the end of the flow expansion section (501) away from the furnace body (4).

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