Blast furnace ironmaking cooling mechanism and ironmaking blast furnace

Abstract

The blast furnace ironmaking cooling mechanism comprises an outer lantern ring, an outer cooling pipe and a lifting driving piece, the outer lantern ring is arranged on the lower portion of a blast furnace body in a sleeved mode and is in sliding fit with the blast furnace body, and a cavity used for containing the outer cooling pipe is formed between the outer lantern ring and the blast furnace body. The outer cooling pipe is wound around the periphery of the blast furnace body and located in the cavity, and the lifting driving piece is connected with the blast furnace body and used for driving the outer cooling pipe and the outer lantern ring to move up and down. According to the blast furnace ironmaking cooling mechanism provided by the utility model, the outer sleeve ring capable of sliding up and down is arranged on the periphery of the blast furnace body, and the outer cooling pipe is arranged in the cavity between the outer sleeve ring and the blast furnace body, so that the lower part of the blast furnace body is effectively cooled; and the outer lantern ring and the outer cooling pipe can be driven to synchronously move downwards to be separated from the lower part of the blast furnace body, so that the convenience in the maintenance process of the outer cooling pipe is improved, and the ironmaking yield of the blast furnace body is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of blast furnace ironmaking, and more specifically relates to a blast furnace ironmaking cooling mechanism and an ironmaking blast furnace. Background Art

[0002] The method of continuously producing liquid pig iron in a blast furnace using coke, iron-containing ore and flux is called blast furnace ironmaking, which is an important part of steel production. During the blast furnace ironmaking process, a cooling mechanism needs to be set up to increase the temperature gradient of the blast furnace and avoid excessive temperature in the blast furnace body, thereby protecting the metal structure and concrete components from losing strength.

[0003] Most of the common blast furnace ironmaking cooling mechanisms on the market are to install spiral cooling pipes at the lower part of the inner wall of the blast furnace. Cooling water flows through the cooling pipes, and the blast furnace is cooled by the cooling pipes. However, the above structure can only cool the inner wall of the blast furnace, and the cooling effect is poor. Utility Model Content

[0004] The utility model aims to provide a blast furnace ironmaking cooling mechanism and an ironmaking blast furnace, which can effectively cool the outside of the blast furnace, facilitate structural maintenance, and help improve maintenance efficiency.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: to provide a blast furnace ironmaking cooling mechanism, including an outer sleeve, an outer cooling pipe and a lifting drive component, the outer sleeve is sleeved on the lower part of the blast furnace body and slidably cooperates with the blast furnace body, a cavity for accommodating the outer cooling pipe is provided between the outer sleeve and the blast furnace body, the outer cooling pipe is wrapped around the outer periphery of the blast furnace body and is located in the cavity, and the lifting drive component is connected to the blast furnace body and is used to drive the outer cooling pipe and the outer sleeve to move up and down.

[0006] In a possible implementation, the top of the outer sleeve is connected to an air supply pipe, the bottom of the outer sleeve is provided with a plurality of air outlet holes, and the outer periphery of the outer sleeve is further provided with a plurality of heat dissipation fins extending along its axial direction.

[0007] In some embodiments, the inlet end of the air supply duct is connected to an air collecting hood, a cold air blower is embedded on one side wall of the air collecting hood, and the air supply duct is connected to the top of the air collecting hood to deliver the cold air introduced by the cold air blower into the cavity of the outer ring.

[0008] In a possible implementation, the outer collar is connected to an extension arm extending upward and connected to the lifting drive member, and the lifting drive member can drive the extension arm and the outer collar to move up and down synchronously.

[0009] In some embodiments, a guide assembly is further provided between the lifting drive member and the extension arm, and the guide assembly includes a slide and a guide rod. The slide is connected to the outer wall of the blast furnace body, and the slide has a accommodating cavity which penetrates radially along the blast furnace body. The guide rod is arranged in the accommodating cavity and extends axially along the blast furnace body. A slide plate which is slidably sleeved on the outer periphery of the guide rod is provided at the upper end of the extension arm, and sliders which are connected to the lower end of the lifting drive member are respectively provided on both sides of the slider. The lifting drive member is provided with one on each side of the same slide, and slide grooves which extend axially and slidably cooperate with the sliders are provided on both side walls of the slide.

[0010] In some embodiments, two groups of guide assemblies are provided on the outer periphery of the blast furnace body, and the two groups of guide assemblies are symmetrically arranged on both sides of the blast furnace body.

[0011] In one possible implementation, the lifting drive member is connected to the blast furnace body through an annular plate, the annular plate is connected to the top of the blast furnace body and is arranged to protrude outward from the outer wall of the blast furnace body, and the upper end of the lifting drive member is connected to the bottom surface of the annular plate.

[0012] In a possible implementation, the external cooling pipe is connected to the first coolant tank, a liquid adding pipe is provided on the top of the first coolant tank, and a sealing cover is provided on the liquid adding pipe.

[0013] In some embodiments, the blast furnace ironmaking cooling mechanism also includes an inner cooling pipe spirally wound inside the blast furnace body and a second coolant tank connected to the inner cooling pipe, the inner cooling pipe is in contact with the inner wall of the blast furnace body, and both ends of the inner cooling pipe are respectively connected to the second coolant tank.

[0014] Compared with the prior art, the solution shown in the embodiment of the present application realizes effective cooling of the lower part of the blast furnace body by disposing an outer ring that can slide up and down on the outer periphery of the blast furnace body and disposing an outer cooling pipe in the cavity between the outer ring and the blast furnace body. The lifting drive member is connected to the blast furnace body, which can drive the outer ring and the outer cooling pipe to move downward synchronously to the lower part of the blast furnace body, thereby improving the convenience of the maintenance process of the external cooling pipe, shortening the maintenance operation time, and helping to increase the ironmaking output of the blast furnace body.

[0015] The utility model also provides an ironmaking blast furnace, which includes a blast furnace body and a blast furnace ironmaking cooling mechanism. The ironmaking blast furnace achieves effective cooling of the lower part of the blast furnace body by arranging an outer sleeve ring that can slide up and down on the outer periphery of the blast furnace body and arranging an outer cooling pipe in a cavity between the outer sleeve ring and the blast furnace body. The lifting drive is connected to the blast furnace body, which can drive the outer sleeve ring and the outer cooling pipe to move down synchronously to the lower part of the blast furnace body, thereby improving the convenience of the external cooling pipe during maintenance, shortening the maintenance operation time, and helping to increase the ironmaking output of the blast furnace body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] Figure 1 A schematic diagram of the structure of a blast furnace ironmaking cooling mechanism provided by an embodiment of the utility model;

[0018] Figure 2 For the utility model embodiment Figure 1 Schematic diagram of the partial structure of the medium-high furnace body, guide assembly, lifting drive and outer sleeve;

[0019] Figure 3 For the utility model embodiment Figure 2 The partially enlarged structural diagram of middle Ⅰ;

[0020] Figure 4 For the utility model embodiment Figure 1 A schematic diagram of the structure of the first coolant tank, the second coolant tank, the outer cooling pipe and the inner cooling pipe;

[0021] Figure 5 For the utility model embodiment Figure 1 Schematic diagram of the partial cross-sectional structure of the middle and outer sleeves, air supply duct, air collecting hood and air cooler.

[0022] Among them, the reference numerals in the figure are:

[0023] 1. Outer ring; 11. Cavity; 12. Air outlet; 13. Heat dissipation fins; 14. Extension arm; 15. Slide plate; 16. Slider; 2. Outer cooling pipe; 21. First coolant tank; 22. Liquid adding pipe; 23. Cover; 3. Lifting drive member; 4. Air supply pipe; 41. Air collecting hood; 42. Air cooler; 43. Connecting frame; 5. Guide assembly; 51. Slide seat; 52. Guide rod; 53. Accommodating cavity; 54. Slide groove; 55. Ring plate; 6. Inner cooling pipe; 61. Second coolant tank; 7. Blast furnace body. DETAILED DESCRIPTION

[0024] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0025] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or indirectly on the other element. It should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "back", "top", "bottom", "inside", "outside", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. The terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "several" is two or more, unless otherwise clearly and specifically defined.

[0026] Please also read Figures 1 to 5 Now, the blast furnace ironmaking cooling mechanism and the ironmaking blast furnace provided by the utility model are described. The blast furnace ironmaking cooling mechanism includes an outer sleeve 1, an outer cooling pipe 2 and a lifting drive member 3. The outer sleeve 1 is sleeved on the lower part of the blast furnace body 7 and slidably cooperates with the blast furnace body 7. There is a cavity 11 for accommodating the outer cooling pipe 2 between the outer sleeve 1 and the blast furnace body 7. The outer cooling pipe 2 is wound around the outer periphery of the blast furnace body 7 and is located in the cavity 11. The lifting drive member 3 is connected to the blast furnace body 7 and is used to drive the outer cooling pipe 2 and the outer sleeve 1 to move up and down.

[0027] Compared with the prior art, the blast furnace ironmaking cooling mechanism provided in the present embodiment realizes effective cooling of the lower part of the blast furnace body 7 by arranging an outer sleeve ring 1 that can slide up and down on the outer periphery of the blast furnace body 7 and arranging an outer cooling pipe 2 in a cavity 11 between the outer sleeve ring 1 and the blast furnace body 7. The lifting drive member 3 is connected to the blast furnace body 7, which can drive the outer sleeve ring 1 and the outer cooling pipe 2 to move downward synchronously to the lower part of the blast furnace body 7, thereby improving the convenience of the maintenance process of the outer cooling pipe 2, shortening the maintenance operation time, and helping to increase the ironmaking output of the blast furnace body 7.

[0028] It should be noted that a support seat is provided at the bottom of the blast furnace body 7, and the support seat is used to support the bottom of the blast furnace body 7 so that the blast furnace body 7 is suspended above the ground. The outer sleeve ring 1 is driven by the lifting drive member 3 to move down to the lower space of the blast furnace body 7, so that the external cooling pipe 2 can be inspected and maintained. The above structure facilitates operation.

[0029] In one possible implementation, see Figures 1 to 5The top of the outer sleeve 1 is connected to an air supply pipe 4, the bottom of the outer sleeve 1 is provided with a plurality of air outlet holes 12, and the outer periphery of the outer sleeve 1 is also provided with a plurality of heat dissipation fins 13 extending along its axial direction.

[0030] In this embodiment, by providing an air supply pipe 4, a cold air flow can be blown into the cavity 11 of the outer collar 1, and then the air flow exchanges heat with the outer wall of the blast furnace body 7 in the cavity 11, and then is discharged from the cavity 11 through the air outlet 12. The above-mentioned process of blowing cold air helps to enhance the cooling effect on the blast furnace body 7. The air supply pipe 4 and the air outlet are respectively located at the top and bottom of the outer collar 1, so that the cold air flow can be effectively covered and fully transported in the cavity 11, thereby enhancing the cooling effect.

[0031] On this basis, heat sinks are also arranged on the peripheral wall of the outer sleeve 1, and the heat in the outer sleeve 1 is effectively dissipated through multiple heat sinks, thereby improving the heat dissipation effect. The heat sinks are arranged in parallel with equal spacing, ensuring uniform heat dissipation at all positions of the outer sleeve 1.

[0032] For some examples, see Figures 1 to 5 The inlet end of the air supply pipe 4 is connected to an air collecting hood 41, and a cold air fan 42 is embedded on one side wall of the air collecting hood 41. The air supply pipe 4 is connected to the top of the air collecting hood 41 to deliver the cold air introduced by the cold air fan 42 to the cavity 11 of the outer ring 1.

[0033] In this embodiment, the air cooler 42 is used to supply cold air into the air collecting hood 41, thereby realizing the air flow supply to the air supply pipe 4. The air cooler 42 makes the air flow have a lower temperature, thereby enhancing the cooling effect of the cold air on the outer collar 1 and the cavity 11, thereby enhancing the cooling effect on the blast furnace body 7.

[0034] In one possible implementation, see Figures 1 to 5 The outer collar 1 is connected with an extension arm 14 extending upward and connected to the lifting drive member 3. The lifting drive member 3 can drive the extension arm 14 and the outer collar 1 to move up and down synchronously.

[0035] In this embodiment, since the outer collar 1 is close to the lower part of the blast furnace body 7, in order to avoid the mounting seat in the middle of the blast furnace body 7, the lifting drive member 3 is arranged on the upper part of the blast furnace body 7. The outer collar 1 is provided with an upwardly extending extension arm 14, which is connected to the lower end of the lifting drive member 3 through the extension arm 14, so that the lifting drive member 3 drives the outer collar 1, and a reasonable arrangement of the structure can be achieved.

[0036] For some examples, see Figures 1 to 5A guide assembly 5 is also provided between the lifting drive member 3 and the extension arm 14, and the guide assembly 5 includes a slide 51 and a guide rod 52. The slide 51 is connected to the outer wall of the blast furnace body 7, and the slide 51 has a accommodating cavity 53 that penetrates along the radial direction of the blast furnace body 7. The guide rod 52 is arranged in the accommodating cavity 53 and extends along the axial direction of the blast furnace body 7. The upper end of the extension arm 14 is provided with a slide plate 15 that is slidably sleeved on the outer periphery of the guide rod 52, and slide blocks 16 connected to the lower end of the lifting drive member 3 are respectively provided on both sides of the slide plate 15. The lifting drive member 3 is provided with one on each side of the same slide 51, and slide grooves 54 that extend axially and slidably cooperate with the slide blocks 16 are provided on both side walls of the slide 51.

[0037] In this embodiment, the guide assembly 5 is arranged between the lifting drive member 3 and the extension arm 14, and is used to guide the outer collar 1 to lift along a certain path, so as to prevent the outer collar 1 from rotating circumferentially during the lifting process, thereby interfering with the position of other components. The guide assembly 5 installs the guide rod 52 through the accommodating cavity 53 on the slide seat 51, and the guide rod 52 passes through the slide plate 15 at the upper end of the extension arm 14, and the slide plate 15 forms a guiding and limiting effect by sliding with the guide rod 52. The extension arm 14 is connected to the lifting drive member 3 through the sliders 16 on both sides of the slider 15, and the slider 16 slides with the slide groove 54 of the slide seat 51, which further enhances the guiding and limiting effect and ensures the smoothness of the lifting action of the outer collar 1.

[0038] For some examples, see Figures 1 to 5 Two groups of guide components 5 are arranged on the outer periphery of the blast furnace body 7, and the two groups of guide components 5 are symmetrically arranged on both sides of the blast furnace body 7. One group of guide components 5 is arranged on each side of the blast furnace plate body, forming a symmetrically arranged structure, which improves the guiding effect and also ensures the uniformity of the driving force on both sides, thereby realizing the lifting and lowering driving effect on the outer collar 1.

[0039] In one possible implementation, see Figures 1 to 5 The lifting drive member 3 is connected to the blast furnace body 7 through an annular plate 55. The annular plate 55 is connected to the top of the blast furnace body 7 and is arranged to protrude outward from the outer wall of the blast furnace body 7. The upper end of the lifting drive member 3 is connected to the bottom surface of the annular plate 55.

[0040] In this embodiment, the upper end of the lifting drive member 3 is connected to the blast furnace body 7 through the annular plate 55. The annular plate 55 is fixedly connected to the top of the blast furnace body 7 and protrudes toward the outer periphery. The bottom surface is used to form a position for installing the lifting drive member 3, thereby ensuring the driving effect of the lifting drive member 3 on the outer casing force.

[0041] In one possible implementation, see Figures 1 to 5The outer cooling pipe 2 is connected to a first coolant tank 21, a liquid adding pipe 22 is provided on the top of the first coolant tank 21, and a cover 23 is provided on the liquid adding pipe 22. The outer cooling pipe 2 is supplied with coolant through the first coolant tank 21. The coolant can be water or oil and other media, and both can achieve cooling effect.

[0042] In this embodiment, a water pump and other components can be provided on the outer cooling pipe 2 to ensure effective delivery of the coolant and improve the circulation effect of the coolant. After the coolant is consumed, the coolant is added to the liquid adding pipe 22 by opening the cover 23 to ensure the cooling effect of the coolant.

[0043] For some examples, see Figures 1 to 5 The blast furnace ironmaking cooling mechanism also includes an inner cooling pipe 6 spirally wound inside the blast furnace body 7 and a second cooling liquid tank 61 connected to the inner cooling pipe 6. The inner cooling pipe 6 is in contact with the inner wall of the blast furnace body 7, and both ends of the inner cooling pipe 6 are respectively connected to the second cooling liquid tank 61. The inner cooling pipe 6 disposed inside the blast furnace body 7 can enhance the cooling effect on the inside of the blast furnace body 7. The inner cooling pipe 6 supplies the cooling liquid through the second cooling liquid tank 61. The structure of the second cooling liquid tank 61 is similar to that of the first cooling liquid tank 21, and also achieves a good cooling effect, which will not be repeated here.

[0044] When inspecting the inner cooling tube 6, the outer ring 1 can be driven away from the lower part of the blast furnace body 7 by the lifting drive 3, and then the area where the inner cooling tube 6 penetrates into the blast furnace body 7 and the area inside the blast furnace body 7 can be inspected respectively.

[0045] On this basis, in order to improve the connection reliability of the structure, the first coolant tank 21 and the second coolant tank 61 are respectively connected to the air collecting hood 41 through the connecting frame 43, thereby ensuring the integrity of the structure.

[0046] Based on the same inventive concept, the embodiment of the present application also provides an ironmaking blast furnace, which includes a blast furnace body 7 and a blast furnace ironmaking cooling mechanism. The ironmaking blast furnace is provided with an outer sleeve 1 that can slide up and down on the outer periphery of the blast furnace body 7, and an outer cooling pipe 2 is provided in a cavity 11 between the outer sleeve 1 and the blast furnace body 7, so as to achieve effective cooling of the lower part of the blast furnace body 7. The lifting drive member 3 is connected to the blast furnace body 7, and can drive the outer sleeve 1 and the outer cooling pipe 2 to move down synchronously to the lower part of the blast furnace body 7, thereby improving the convenience of the outer cooling pipe 2 during the maintenance process, shortening the maintenance operation time, and helping to increase the ironmaking output of the blast furnace body 7.

[0047] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. Blast furnace ironmaking cooling mechanism, characterized in that: The invention comprises an outer collar (1), an outer cooling tube (2) and a lifting drive member (3); the outer collar (1) is sleeved on the lower part of a blast furnace body (7) and is slidably matched with the blast furnace body (7); a cavity (11) for accommodating the outer cooling tube (2) is provided between the outer collar (1) and the blast furnace body (7); the outer cooling tube (2) is arranged around the outer periphery of the blast furnace body (7) and is located in the cavity (11); the lifting drive member (3) is connected to the blast furnace body (7) and is used to drive the outer cooling tube (2) and the outer collar (1) to move up and down.

2. The blast furnace ironmaking cooling mechanism according to claim 1, characterized in that: The top of the outer sleeve (1) is connected to an air supply pipe (4), the bottom of the outer sleeve (1) is provided with a plurality of air outlet holes (12), and the outer periphery of the outer sleeve (1) is also provided with a plurality of heat dissipation fins (13) extending along its axial direction.

3. The blast furnace ironmaking cooling mechanism according to claim 2, characterized in that: The inlet end of the air supply pipe (4) is connected to an air collecting hood (41), and a cold air machine (42) is embedded on a side wall of the air collecting hood (41). The air supply pipe (4) is connected to the top of the air collecting hood (41) and is used to deliver the cold air introduced by the cold air machine (42) into the cavity (11) of the outer ring (1).

4. The blast furnace ironmaking cooling mechanism according to claim 1, characterized in that: The outer collar (1) is connected to an extension arm (14) extending upward and connected to the lifting drive member (3); the lifting drive member (3) can drive the extension arm (14) and the outer collar (1) to move up and down synchronously.

5. The blast furnace ironmaking cooling mechanism according to claim 4, characterized in that: A guide assembly (5) is also provided between the lifting drive member (3) and the extension arm (14), the guide assembly (5) comprising a slide seat (51) and a guide rod (52), the slide seat (51) being connected to the outer wall of the blast furnace body (7), the slide seat (51) having a receiving cavity (53) penetrating along the radial direction of the blast furnace body (7), the guide rod (52) being arranged in the receiving cavity (53) and extending along the axial direction of the blast furnace body (7), the upper end of the extension arm (14) being provided with a slide plate (15) slidably sleeved on the outer periphery of the guide rod (52), the two sides of the slide plate (15) being respectively provided with slide blocks (16) connected to the lower end of the lifting drive member (3), the lifting drive member (3) being provided with one on each side of the same slide seat (51), and the two side walls of the slide seat (51) being provided with slide grooves (54) extending axially and slidably matched with the slide blocks (16).

6. The blast furnace ironmaking cooling mechanism according to claim 5, characterized in that: The guide components (5) are provided with two groups on the outer periphery of the blast furnace body (7), and the two groups of guide components (5) are symmetrically arranged on both sides of the blast furnace body (7).

7. The blast furnace ironmaking cooling mechanism according to any one of claims 1 to 6, characterized in that: The lifting drive member (3) is connected to the blast furnace body (7) via an annular plate (55); the annular plate (55) is connected to the top of the blast furnace body (7) and is arranged to protrude outward from the outer wall of the blast furnace body (7); the upper end of the lifting drive member (3) is connected to the bottom surface of the annular plate (55).

8. The blast furnace ironmaking cooling mechanism according to any one of claims 1 to 6, characterized in that: The external cooling pipe (2) is connected to a first cooling liquid tank (21), a liquid adding pipe (22) is provided on the top of the first cooling liquid tank (21), and a sealing cover (23) is provided on the liquid adding pipe (22).

9. The blast furnace ironmaking cooling mechanism according to claim 8, characterized in that: The blast furnace ironmaking cooling mechanism also includes an inner cooling pipe (6) spirally wound inside the blast furnace body (7) and a second cooling liquid tank (61) connected to the inner cooling pipe (6), the inner cooling pipe (6) is in contact with the inner wall of the blast furnace body (7), and the two ends of the inner cooling pipe (6) are respectively connected to the second cooling liquid tank (61).

10. An iron-making blast furnace, characterized in that: The ironmaking blast furnace comprises a blast furnace body (7) and a blast furnace ironmaking cooling mechanism according to any one of claims 1 to 9.

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