Preheating recycling structure of converter

Abstract

The invention relates to the technical field of iron and steel smelting, in particular to a preheating recycling structure of a converter, which comprises a three-way pipeline and a fixed base, one end of the three-way pipeline is provided with an air vent, one side of the three-way pipeline far away from the air vent is communicated with a heat storage pipeline, the bottom of the three-way pipeline is communicated with a flue, and the flue is communicated with the fixed base. A fixing frame is arranged on the outer side of the flue, the fixing frame is fixedly connected to the top of a fixing base, a sliding base is arranged on the top of the fixing base, and a converter is rotationally connected to the inner side of the sliding base; by means of the mode that the devices run alternately and crosswise, the heat of the running devices can be effectively utilized to preheat the devices needing to be preheated in the running process of the multiple devices, the intermittent preheating heat storage mode can effectively guarantee the running continuity of the devices, and the effect that the devices are recycled after being preheated and recycled is achieved.

Description

Technical Field

[0001] This invention relates to the field of iron and steel smelting technology, and more specifically, to a preheating recovery and reuse structure for a converter. Background Technology

[0002] A converter is an important metallurgical equipment widely used in steelmaking, copper smelting, nickel smelting and other fields. Its core function is to remove impurities from molten iron through high-temperature oxidation reaction and improve the purity of molten steel. The structure of a converter includes the furnace body, furnace lining, tuyeres, furnace mouth and other parts. Its working principle is based on oxygen blowing and chemical reaction.

[0003] Chinese patent announcement number CN222069327U discloses a waste heat recovery structure for a rotary kiln, comprising a rotary kiln body, a heat absorption layer, and a connecting pipe. Multiple heat absorption layers are equidistantly arranged from top to bottom within the internal cavity of the rotary kiln body. A connecting pipe is evenly coiled around each heat absorption layer. One side of the connecting pipe is connected to a water inlet pipe, and the other side is connected to a water outlet pipe. The advantage of this patent is that, depending on the actual application of the rotary kiln, water and air can be circulated through the connecting pipe at appropriate locations within the kiln, thereby recovering and utilizing the heat inside the kiln. This structural design allows for the selection of suitable locations for the connecting pipe, maximizing the recovery and utilization of heat inside the rotary kiln, resulting in better practical application effects. The combined effect of water and air circulation recovers and utilizes the heat inside the rotary kiln.

[0004] Although the above-mentioned patent utilizes the structural design to select the appropriate location of the connecting pipe and maximize the recovery and utilization of heat inside the rotary kiln, it is worth noting that the preheating effect of the converter will vary depending on the amount of gas and water entering the converter during operation. Therefore, it is necessary to effectively control the amount of gas and water entering the converter during the preheating process in order to achieve a balanced preheating recovery effect.

[0005] In view of this, we propose a preheating recovery and reuse structure for converters. Summary of the Invention

[0006] The purpose of this invention is to provide a preheating, recycling, and reuse structure for converters to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides a preheating, recovery, and reuse structure for a converter, comprising a three-way pipe and a fixed base. One end of the three-way pipe is provided with a vent, and a heat storage pipe is connected to the side of the three-way pipe away from the vent. A flue is connected to the bottom of the three-way pipe, and a fixed frame is provided on the outside of the flue. The fixed frame is fixedly connected to the top of the fixed base, and a sliding base is provided on the top of the fixed base. The converter is rotatably connected to the inner side of the sliding base.

[0008] A sliding column is fixedly connected to the outer wall of the flue, and a flue opening is provided at the bottom of the sliding column;

[0009] The fixing frame is provided with a connecting rod assembly.

[0010] According to the preheating, recovery and reuse structure of a converter as described in the claim, the following features are provided: a plurality of solenoid valves are fixedly connected to the bottom of the three-way pipe, a heat storage rod is fixedly connected to the inner side of the heat storage pipe, and filter screens are provided on both sides of the heat storage rods, with the filter screens fixedly connected to the inner wall of the heat storage pipe.

[0011] As a preferred embodiment of the present invention, the inner wall of the flue opening is provided with a snap-fit ​​groove, the snap-fit ​​groove is matched with the top opening of the converter, and multiple spray guns are fixedly connected to the upper part of the inner wall of the flue opening, the spray guns are fixedly connected to the inner wall of the flue opening in a ring array.

[0012] As a preferred embodiment of the present invention, protective shells are fixedly connected to the outer walls of both sides of the fixing frame, the connecting rod assembly is disposed inside the protective shell, a blocking shell is fixedly connected to one side of the fixing frame, and a motor is fixedly connected to the blocking shell on the side away from the fixing frame.

[0013] As a preferred embodiment of the present invention, a fixing plate is fixedly connected to the outer wall of the fixing frame, a first square hole is opened between the two fixing plates of the fixing frame, a second square hole is opened on the outer wall of the fixing frame at the sliding base position, and an extension rod is fixedly connected to the outer walls of the upper two sides of the fixing frame.

[0014] As a preferred embodiment of the present invention, the linkage assembly includes a first linkage, which is fixedly connected to the output end of the motor.

[0015] As a preferred embodiment of the present invention, the fixing frame is slidably connected to a sliding frame on the side near the blocking shell, a sliding plate is slidably connected to the inner wall of the sliding frame, a sliding disk is rotatably connected to the inner side of the sliding plate, and the first connecting rod is fixedly connected to the sliding disk at the end away from the motor, and the first connecting rod is fixedly connected to the periphery of the sliding disk.

[0016] As a preferred embodiment of the present invention, the sliding disk is rotatably connected to a fixed column at the end away from the first connecting rod, and the fixed column is rotatably connected to the sliding column at the end away from the sliding disk.

[0017] Preferably, the top of the sliding column is rotatably connected to a second connecting rod, and the end of the second connecting rod away from the sliding column is rotatably connected to a double-headed telescopic rod. The middle end of the double-headed telescopic rod is rotatably connected to a fixed plate, and the double-headed telescopic rod passes through a first square hole. The lower side of the end of the double-headed telescopic rod away from the second connecting rod is rotatably connected to a third connecting rod, and the end of the third connecting rod away from the double-headed telescopic rod is rotatably connected to the outer wall of the sliding base.

[0018] Preferably, in this invention, a fourth link is rotatably connected to the upper side of the end of the double-headed telescopic rod away from the second link. A limiting strip is fixedly connected to the outer wall of the fourth link, and the limiting strip is slidably connected to the inner wall of the protective shell. A protruding rod is rotatably connected to the end of the fourth link away from the double-headed telescopic rod. The protruding rod is slidably connected through the end of the extension rod away from the fixed frame. A protruding column is fixedly connected to the end of the protruding rod away from the fourth link. The position of the protruding column is on the same vertical line as the solenoid valve.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] 1. In this converter preheating recovery and reuse structure, the push-pull effect of the double-headed telescopic rod in the connecting rod assembly brings the flue and converter closer together and seals the converter. At the same time, the equipment operates in an intermittent and cross manner, which allows the heat of the running equipment to be effectively used to preheat the equipment that needs to be preheated during the operation of multiple equipment. This intermittent preheating and heat storage method can effectively ensure the continuity of equipment operation, so as to achieve the effect of preheating recovery and reuse.

[0021] 2. In this converter preheating and recycling structure, water spraying through the spray gun can not only generate a large amount of water vapor to carry heat upwards and transfer, but also effectively block a large amount of smoke and dust generated during converter operation. Attached Figure Description

[0022] Figure 1 This is a three-dimensional schematic diagram of the converter preheating, recycling, and reuse structure of the present invention;

[0023] Figure 2 This is a three-dimensional schematic diagram of a single preheating and recycling structure of the converter preheating and recycling structure of the present invention;

[0024] Figure 3 This is a schematic cross-sectional view of the overall transverse section of the converter preheating, recycling, and reuse structure of the present invention;

[0025] Figure 4 This is a schematic longitudinal sectional view of the converter preheating, recycling, and reuse structure of the present invention.

[0026] Figure 5 This is a three-dimensional internal schematic diagram of the converter preheating, recycling, and reuse structure of the present invention;

[0027] Figure 6 This is a three-dimensional unfolded schematic diagram of the converter preheating, recycling, and reuse structure of the present invention;

[0028] Figure 7 This is a three-dimensional unfolded schematic diagram of the connecting rod assembly of the converter preheating, recycling, and reuse structure of the present invention.

[0029] The meanings of the labels in the diagram are as follows:

[0030] 1. T-junction pipe; 11. Vent; 111. Solenoid valve; 12. Heat storage pipe; 121. Heat storage rod; 122. Filter screen; 2. Flue; 21. Sliding column; 22. Flue opening; 221. Clip groove; 222. Spray gun; 3. Fixed base; 31. Sliding base; 32. Fixing frame; 321. Fixing plate; 322. Square hole No. 1; 323. Square hole No. 2; 324. Extension rod; 33. Protective shell; 34. Baffle shell; 4. Converter;

[0031] 5. Linkage assembly; 51. Motor; 511. Link 1; 52. Sliding frame; 521. Sliding plate; 522. Sliding disc; 523. Fixed column; 53. Link 2; 531. Double-headed telescopic rod; 532. Link 3; 54. Link 4; 541. Restriction bar; 542. Protruding rod; 543. Protruding column. Detailed Implementation

[0032] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0034] Example 1

[0035] See also Figures 1-7As shown, this embodiment provides a preheating recovery and reuse structure for a converter, including a three-way pipe 1 and a fixed base 3. One end of the three-way pipe 1 is provided with a vent 11. A heat storage pipe 12 is connected to the side of the three-way pipe 1 away from the vent 11. A flue 2 is connected to the bottom of the three-way pipe 1. A fixed frame 32 is provided on the outside of the flue 2. The fixed frame 32 is fixedly connected to the top of the fixed base 3. A sliding base 31 is provided on the top of the fixed base 3. A converter 4 is rotatably connected to the inside of the sliding base 31. A sliding column 21 is fixedly connected to the outer wall of the flue 2. A flue opening 22 is provided at the bottom of the sliding column 21. A connecting rod assembly 5 is provided through the fixed frame 32.

[0036] like Figure 3 As shown, multiple solenoid valves 111 are fixedly connected to the bottom of the three-way pipe 1, and a heat storage rod 121 is fixedly connected to the inner side of the heat storage pipe 12. Filter screens 122 are provided on both sides of the heat storage rod 121 and are fixedly connected to the inner wall of the heat storage pipe 12.

[0037] like Figures 3-4 As shown, the inner wall of the flue vent 22 is provided with a snap-fit ​​groove 221, which fits into the top opening of the converter 4. Multiple spray guns 222 are fixedly connected to the inner wall of the flue vent 22 above the snap-fit ​​groove 221. The spray guns 222 are fixedly connected to the inner wall of the flue vent 22 in a ring array.

[0038] Protective shells 33 are fixedly connected to the outer walls of both sides of the fixed frame 32. The connecting rod assembly 5 is located inside the protective shell 33. A blocking shell 34 is fixedly connected to one side of the fixed frame 32. A motor 51 is fixedly connected to the blocking shell 34 on the side away from the fixed frame 32. A fixing plate 321 is fixedly connected to the outer wall of the fixed frame 32. A first square hole 322 is opened between the two fixing plates 321 on both sides of the fixed frame 32. A second square hole 323 is opened on the outer wall of the fixed frame 32 at the position of the sliding base 31. An extension rod 324 is fixedly connected to the outer walls of both sides of the upper end of the fixed frame 32.

[0039] like Figures 5-6 As shown, the linkage assembly 5 includes a first linkage 511, which is fixedly connected to the output end of the motor 51. A sliding frame 52 is slidably connected to the side of the fixing bracket 32 ​​near the blocking shell 34. A sliding plate 521 is slidably connected to the inner wall of the sliding frame 52. A sliding disk 522 is rotatably connected to the inner side of the sliding plate 521. The end of the first linkage 511 away from the motor 51 is fixedly connected to the sliding disk 522. The first linkage 511 is fixedly connected to the periphery of the sliding disk 522. A fixing post 523 is rotatably connected to the end of the sliding disk 522 away from the first linkage 511. The fixing post 523 is rotatably connected to the sliding post 21 at the end away from the sliding disk 522.

[0040] like Figure 7As shown, a second connecting rod 53 is rotatably connected to the top of the sliding column 21. A double-headed telescopic rod 531 is rotatably connected to the end of the second connecting rod 53 furthest from the sliding column 21. The middle end of the double-headed telescopic rod 531 is rotatably connected to the fixed plate 321, and the double-headed telescopic rod 531 passes through a first square hole 322. A third connecting rod 532 is rotatably connected to the lower side of the end of the double-headed telescopic rod 531 furthest from the second connecting rod 53. The end of the third connecting rod 532 furthest from the double-headed telescopic rod 531 is rotatably connected to the outer wall of the sliding base 31. The double-headed telescopic rod 531 is rotatably connected to the lower side of the first square hole 322. A fourth link 54 is rotatably connected to the upper side of one end of the second link 53. A limiting strip 541 is fixedly connected to the outer wall of the fourth link 54. The limiting strip 541 is slidably connected to the inner wall of the protective shell 33. A protruding rod 542 is rotatably connected to the end of the fourth link 54 away from the double-headed telescopic rod 531. The protruding rod 542 is slidably connected to the end of the extension rod 324 away from the fixed frame 32. A protruding column 543 is fixedly connected to the end of the protruding rod 542 away from the fourth link 54. The position of the protruding column 543 is on the same vertical line as the solenoid valve 111.

[0041] Among them, the double-headed telescopic rod 531 is a passive telescopic component, consisting of a straight rod and a sleeve. The straight rod slides through the inside of the sleeve, and the center of the sleeve is rotatably set on the fixed plate 321. When the double-headed telescopic rod 531 is rotated by the second connecting rod 53, it telescopically moves to ensure that the fourth connecting rod 54 moves vertically.

[0042] Therefore, it can be seen that when heat energy needs to be recovered and utilized during the preheating of converter 4, such as... Figures 1-3 As shown, during the steelmaking process, quicklime is added to the empty converter 4. After the addition is completed, the quicklime can be evenly distributed inside the converter 4 by rotating it. Then, recycled scrap steel is added to the converter 4 and molten iron is added again. The converter 4 is kept in a vertical position, and then the connecting rod assembly 5 is started.

[0043] like Figures 6-7As shown, driven by motor 51, the first connecting rod 511 rotates, which in turn drives the sliding disk 522 to rotate. Because the end of the first connecting rod 511 is located around the periphery of the sliding disk 522, the rotation of the first connecting rod 511 causes the sliding disk 522 to rotate eccentrically. This eccentric rotation of the sliding disk 522 then causes the sliding plate 521 to move up and down, and simultaneously, the sliding disk 522 also causes the sliding column 21 to move up and down. Therefore, when the end of the first connecting rod 51 furthest from motor 51 is facing upwards, the electric... After the machine 51 drives the first connecting rod 511 to rotate 180 degrees, the first connecting rod 511 rotates downwards, which in turn drives the sliding column 21 to move down a certain distance. At the same time, the downward movement of the sliding column 21 will also drive the second connecting rod 53 to pull the double-headed telescopic rod 531 to rotate. Simultaneously, the rotation of the double-headed telescopic rod 531 will also pull the third connecting rod 532 to move upwards. At this time, the third connecting rod 532 will simultaneously pull the sliding base 31 to slide upwards inside the fixed frame 32. At this time, the converter 4 will move closer to the flue duct 22, and the flue duct 22 will seal the entrance of the converter 4.

[0044] At this time, the spray gun 222 sprays water. Due to the excessively high temperature inside the converter 4, the water sprayed by the spray gun 222 will evaporate rapidly before it even comes into contact with the molten iron and scrap steel inside the converter 4, forming a large amount of water vapor. Along with the heat inside the converter 4, the water vapor will rise into the three-way pipe 1 and flow to the heat storage rod 121 in the heat storage pipe 12 for storage. Figure 1 As shown, when multiple devices need to operate, when devices on both sides are operating, the adjacent devices of the operating devices are preheated. At this time, the temperature generated after the molten iron is poured into both sides will be transferred to the converter 4 which is being preheated through the three-way pipe 1 and the heat storage pipe 12. This allows the heat of the operating devices to be effectively used to preheat the devices that need to be preheated during the operation of multiple devices. This intermittent preheating and heat storage method can effectively ensure the continuity of equipment operation, so as to achieve the effect of preheating and recycling.

[0045] Furthermore, a large amount of smoke and dust will be generated during the operation of converter 4. The water sprayed by spray gun 222 can not only generate a large amount of water vapor to carry heat upward and transfer, but also effectively block the large amount of smoke and dust generated during the operation of converter 4.

[0046] It should be noted that the connection between the three-way pipe 1 and the heat storage pipe 12 is controlled by a solenoid valve 111 to open or close. When the double-headed telescopic rod 531 rotates and pulls the third connecting rod 532 upward, it will also push the fourth connecting rod 54 upward. At this time, the fourth connecting rod 54 will drive the protruding rod 542 and the protruding column 543 to move upward together and touch the solenoid valve 111. At this time, the solenoid valve 111 will open the connection between the three-way pipe 1 and the heat storage pipe 12. At this time, the heat generated by the converters 4 that are running on both sides will be transferred to the heat storage rod 121 in the heat storage pipe 12. When other equipment needs to be preheated before adding molten iron, the solenoid valve 111 will also be opened to allow the heat to rush into the converter 4 that needs to be preheated. At this time, the spray gun 222 above the converter 4 that is preheating is not working.

[0047] In addition, when all equipment is shut down, i.e. when the solenoid valve 111 closes the three-way pipe 1 and the heat storage pipe 12, the heat storage rod 121 stores heat to facilitate preheating for the next startup.

[0048] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A preheating, recycling, and reuse structure for a converter, comprising a three-way pipe (1) and a fixed base (3), characterized in that: One end of the three-way pipe (1) is provided with a vent (11). The three-way pipe (1) is connected to a heat storage pipe (12) on the side away from the vent (11). The bottom of the three-way pipe (1) is connected to a flue (2). A fixing frame (32) is provided on the outside of the flue (2). The fixing frame (32) is fixedly connected to the top of the fixing base (3). A sliding base (31) is provided on the top of the fixing base (3). A converter (4) is rotatably connected to the inside of the sliding base (31). A sliding column (21) is fixedly connected to the outer wall of the flue (2), and a flue opening (22) is opened at the bottom of the sliding column (21); The fixing frame (32) is provided with a connecting rod assembly (5) through it.

2. The preheating, recovery, and reuse structure for a converter according to claim 1, characterized in that: The bottom of the three-way pipe (1) is fixedly connected to multiple solenoid valves (111), the inner side of the heat storage pipe (12) is fixedly connected to a heat storage rod (121), and filter screens (122) are provided on both sides of the heat storage rod (121). The filter screens (122) are fixedly connected to the inner wall of the heat storage pipe (12).

3. The preheating, recovery, and reuse structure for a converter according to claim 1, characterized in that: The inner wall of the flue opening (22) is provided with a snap-fit ​​groove (221), which fits into the top opening of the converter (4). Multiple spray guns (222) are fixedly connected to the upper part of the inner wall of the flue opening (221), and the spray guns (222) are fixedly connected to the inner wall of the flue opening (22) in a ring array.

4. The preheating, recovery, and reuse structure for a converter according to claim 1, characterized in that: The outer walls of both sides of the fixed frame (32) are fixedly connected to protective shells (33), the connecting rod assembly (5) is located inside the protective shell (33), a blocking shell (34) is fixedly connected to one side of the fixed frame (32), and a motor (51) is fixedly connected to the blocking shell (34) on the side away from the fixed frame (32).

5. The preheating, recycling, and reuse structure for a converter according to claim 4, characterized in that: The outer wall of the fixed frame (32) is fixedly connected to a fixed plate (321). The fixed frame (32) has a first square hole (322) between the two fixed plates (321). The outer wall of the fixed frame (32) at the position of the sliding base (31) has a second square hole (323). The upper two outer walls of the fixed frame (32) are fixedly connected to extension rods (324).

6. The preheating, recovery, and reuse structure for a converter according to claim 5, characterized in that: The linkage assembly (5) includes a first linkage (511), which is fixedly connected to the output end of the motor (51).

7. The preheating, recovery, and reuse structure for a converter according to claim 6, characterized in that: The fixed frame (32) has a sliding frame (52) slidably connected to the side near the blocking shell (34). The inner wall of the sliding frame (52) is slidably connected to a sliding plate (521). The inner side of the sliding plate (521) is rotatably connected to a sliding disk (522). The first connecting rod (511) is fixedly connected to the sliding disk (522) at the end away from the motor (51). The first connecting rod (511) is fixedly connected to the periphery of the sliding disk (522).

8. The preheating, recovery, and reuse structure for a converter according to claim 7, characterized in that: The sliding disk (522) is rotatably connected to a fixed column (523) at the end away from the first connecting rod (511), and the fixed column (523) is rotatably connected to the sliding column (21) at the end away from the sliding disk (522).

9. The preheating, recovery, and reuse structure for a converter according to claim 8, characterized in that: The top of the sliding column (21) is rotatably connected to a second connecting rod (53). The second connecting rod (53) is rotatably connected to a double-headed telescopic rod (531) at the end away from the sliding column (21). The middle end of the double-headed telescopic rod (531) is rotatably connected to a fixed plate (321), and the double-headed telescopic rod (531) passes through a first square hole (322). The lower side of the end of the double-headed telescopic rod (531) away from the second connecting rod (53) is rotatably connected to a third connecting rod (532). The end of the third connecting rod (532) away from the double-headed telescopic rod (531) is rotatably connected to the outer wall of the sliding base (31).

10. The preheating, recycling, and reuse structure for a converter according to claim 9, characterized in that: The double-headed telescopic rod (531) is rotatably connected to the fourth connecting rod (54) on the upper side of the end away from the second connecting rod (53). The outer wall of the fourth connecting rod (54) is fixedly connected to a limiting strip (541). The limiting strip (541) is slidably connected to the inner wall of the protective shell (33). The fourth connecting rod (54) is rotatably connected to a protruding rod (542) on the end away from the double-headed telescopic rod (531). The protruding rod (542) is slidably connected to the end of the extension rod (324) away from the fixed frame (32). The protruding rod (542) is fixedly connected to a protruding column (543) on the end away from the fourth connecting rod (54). The position of the protruding column (543) is on the same vertical line as the solenoid valve (111).

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