Blast furnace taphole channel repairing device

Abstract

The utility model belongs to the technical field of blast furnace smelting, and particularly discloses a blast furnace taphole channel repairing device. The blast furnace iron notch hole channel repairing device comprises a clay gun; the gun head is connected with the clay gun and provided with a gun muzzle used for being connected with a blast furnace iron notch hole channel; and the charging device is connected with the monitor head and is used for injecting grouting materials into the monitor head. According to the blast furnace taphole channel repairing device provided by the utility model, the blast furnace taphole channel can be quickly, safely and economically repaired by utilizing the tapping interval of the taphole, and the slurry is extruded by high pressure of the clay gun in the repairing process, so that the cracks of the taphole channel can be effectively filled, and the repairing effect is good.

Description

Technical Field

[0001] The utility model belongs to the technical field of blast furnace smelting, and in particular relates to a blast furnace iron mouth channel repairing device. Background Art

[0002] As an important structure of the blast furnace, the iron mouth of the blast furnace is the only way for the blast furnace to discharge molten iron and slag. The state of the iron mouth directly determines whether the continuous smelting of the blast furnace can proceed normally. If the iron mouth is in poor condition and the slag and iron are not discharged cleanly for a long time, it will directly affect the stability of the blast furnace condition and the optimization of indicators. At the same time, if the iron mouth of the blast furnace is too severely damaged, it will also accelerate the erosion of the furnace cylinder and reduce the service life of the blast furnace. The termination of the second-generation furnace campaign of Panzhihua Iron and Steel No. 4 Blast Furnace was mainly due to the abnormal iron mouth, which caused serious erosion of the furnace cylinder. In normal production, due to the gas cross-flow in the channel, the iron mouth sprayed, the amount of slag cleaning work in front of the furnace increased, and the maintenance of the iron mouth was due to the large gas fire, and the working environment became worse.

[0003] The traditional maintenance method of the iron mouth is to clean the iron mouth during the wind stop, and then re-cast the iron mouth with castables. This maintenance method has the following disadvantages:

[0004] 1. It can only be performed when the wind is resting;

[0005] 2. It takes a long time. Due to the limitations of the working environment and working methods, it takes at least 15 hours to clean the iron mouth channel. The general planned wind break time is not enough to complete this operation, and the conditions can only be met during the annual break;

[0006] 3. Cleaning the iron mouth channel is very dangerous and may cause gas poisoning, burns and other injuries;

[0007] 4. The repair effect is general. There is no high-pressure injection during pouring, and the pouring material cannot penetrate into the cracks in the channel, and the purpose of eliminating the cracks cannot be achieved.

[0008] In view of this, it is necessary to provide a device for quickly repairing the blast furnace iron mouth channel that can overcome the above-mentioned shortcomings. Utility Model Content

[0009] The utility model aims to provide a device for quickly repairing the iron mouth channel of a blast furnace to overcome the shortcomings of the prior art.

[0010] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0011] According to the utility model, a blast furnace iron mouth channel repairing device is provided, which comprises:

[0012] Mud cannon;

[0013] A gun head connected to the mud gun, the gun head having a gun mouth for connecting to the iron mouth channel of a blast furnace;

[0014] A charging device connected to the gun head, wherein the charging device is used to inject grouting material into the gun head.

[0015] According to an embodiment of the utility model, the charging device includes a charging funnel and a connecting pipe, one end of the connecting pipe is connected to the charging funnel, and the other end is connected to the gun head.

[0016] According to an embodiment of the utility model, a flow regulating valve is provided on the connecting pipe.

[0017] According to an embodiment of the utility model, the connecting pipe is arranged obliquely relative to the charging funnel and the gun head.

[0018] According to an embodiment of the utility model, the mud gun includes a connecting portion and a gun body, the connecting portion is used to connect the gun head, and the gun body includes a mud cylinder and a mud pushing mechanism partially disposed in the mud cylinder.

[0019] According to an embodiment of the utility model, the gun head and the gun body are both cylindrical, and the connecting portion is truncated cone-shaped.

[0020] According to an embodiment of the present invention, the diameter of the gun head is smaller than the diameter of the gun body.

[0021] According to an embodiment of the utility model, a sealing member is provided at the muzzle of the gun head.

[0022] According to an embodiment of the utility model, the blast furnace iron mouth channel repairing device also includes a drill bit used in conjunction with it, and the drill bit is used to drill the iron mouth to a predetermined distance so as to achieve the connection between the gun muzzle and the blast furnace iron mouth channel.

[0023] According to an embodiment of the utility model, the connecting pipe is configured as a seamless steel pipe.

[0024] By adopting the above technical solution, the utility model has at least the following beneficial effects:

[0025] The blast furnace iron mouth channel repairing device provided by the utility model can use the iron mouth tapping interval to quickly, safely and economically repair the blast furnace iron mouth channel, and the slurry is squeezed by the high pressure of the mud gun during the repair process, which can effectively fill the cracks in the iron mouth channel, and the repair effect is better than the traditional repair method. The blast furnace iron mouth channel repairing device provided by the utility model is used to repair the blast furnace iron mouth channel, which can extend the service life of the blast furnace. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments 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 creative work.

[0027] Figure 1 A schematic diagram of the structure of a blast furnace iron mouth channel repairing device provided by an embodiment of the utility model;

[0028] Figure 2 for Figure 1 The schematic diagram of the blast furnace iron mouth channel repairing device in the installed state is shown;

[0029] Figure 3 This is a schematic diagram of the structure of the gun head of the blast furnace iron mouth channel repair device;

[0030] Figure 4 This is a schematic diagram of the structure of the connecting pipe of the blast furnace iron mouth channel repair device;

[0031] Figure 5 It is a structural schematic diagram of a charging funnel of a blast furnace iron mouth channel repairing device;

[0032] Figure 6 This is a schematic diagram of the charging device and the gun head of the blast furnace iron mouth channel repair device in the assembled state.

[0033] Description of Reference Numerals

[0034] 1 mud gun; 11 connecting part; 12 gun body; 121 mud cylinder; 122 mud pushing mechanism; 123 head; 124 connecting rod; 125 driving part; 2 gun head; 21 gun muzzle; 22 sealing part; 3 charging device; 31 charging funnel; 32 connecting pipe; 33 flow regulating valve; 4 furnace shell; 5 furnace wall; 6 iron mouth mud bag; 7 iron mouth channel. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the embodiments of the present invention are further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0036] It should be noted that, in the description of the present invention, the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", "longitudinal" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0037] The terms "including" and "having" and any variations thereof in the specification and claims of the present utility model are intended to cover non-exclusive inclusions; the terms "first", "second", etc. in the specification and claims of the present utility model are used to distinguish different objects rather than to describe a specific order. "Multiple" means two or more, unless otherwise clearly and specifically defined.

[0038] In the specification and claims of the utility model, when an element is referred to as being "fixed on" or "mounted on" or "disposed on" or "connected to" another element, it may be directly or indirectly located on the other element. For example, when an element is referred to as being "connected to" another element, it may be directly or indirectly connected to the other element.

[0039] It should be noted that the specific structure, features and advantages of the present invention will be specifically described below by way of example, but all descriptions are only for illustration and should not be understood as limiting the present invention in any way. In addition, any single technical feature described or implied in the embodiments mentioned herein, or any single technical feature shown or implied in the drawings, can still be combined or deleted between these technical features (or their equivalents) to obtain more other embodiments of the present invention that may not be directly mentioned in this article.

[0040] The iron mouth of a blast furnace is subjected to high temperature and high pressure, mechanical scouring, and chemical corrosion, which causes cracks and faults in the iron mouth channel, making it difficult to open the iron mouth, reducing the depth of the iron mouth, causing accelerated erosion of the hearth, and shortening the service life of the blast furnace. Therefore, it is necessary to repair the iron mouth channel of the blast furnace. However, as mentioned in the background technology section, most of the existing iron mouth channel repair technologies are carried out during a long period of wind stop. The iron mouth channel is cleaned and then poured, which takes a long time, and may cause accidents such as gas leakage poisoning and burns during the cleaning process. To this end, the utility model aims to provide a new device for quickly repairing the iron mouth channel of a blast furnace, which can overcome the above-mentioned shortcomings of the prior art and has a better repair effect.

[0041] like Figure 1 As shown, the blast furnace iron mouth channel repairing device provided by the utility model comprises: a mud gun 1; a gun head 2 connected to the mud gun 1, the gun head 2 having a gun mouth 21 for connecting to the blast furnace iron mouth channel; a charging device 3 connected to the gun head 2, the charging device 3 is used to inject grouting material into the gun head 2. The blast furnace iron mouth channel repairing device provided by the utility model can inject the grouting material injected through the charging device 3 into the blast furnace iron mouth channel through the mud gun 1, and the grouting material can effectively fill the cracks in the iron mouth channel after being squeezed by the high pressure of the mud gun 1, and the repair effect is better than that of the traditional repair method.

[0042] The mud gun 1 can be a mud gun conventionally used in the prior art, for example, a pneumatic mud gun, an electric mud gun, a hydraulic mud gun, etc.

[0043] In the illustrated embodiment, the mud gun 1 includes a connecting portion 11 and a gun body 12. The connecting portion 11 is used to connect the gun head 2. The gun body 12 is the main component of the mud gun 1, including a mud cylinder 121 and a mud pushing mechanism 122 partially disposed in the mud cylinder 121. The material located in the mud cylinder 121 can be discharged by driving the mud pushing mechanism 122 to move in the mud cylinder 121.

[0044] In the illustrated embodiment, the mud pushing mechanism 122 is specifically configured as a piston, including three parts: a head 123, a connecting rod 124, and a driving part 125. The head 123 is completely located in the mud cylinder 121, and the shape and size of the head 123 match the shape and size of the mud cylinder 121. The mud cylinder 121 can be divided into two parts by the head 123. Preferably, a seal is provided between the head 123 and the mud cylinder 121, and the two parts of the mud cylinder 121 are sealed and isolated from each other, so that the materials in the two parts of the mud cylinder 121 cannot be fluidly connected to each other. The connecting rod 124 is partially located in the mud cylinder 121. The driving part 125 is located outside the mud cylinder 121, and is used to engage with the driving component to drive the piston to reciprocate.

[0045] The gun head 2 can be a conventional gun head used in the prior art. In the illustrated embodiment, the muzzle 21 of the gun head 2 is located on the left end surface, and an opening for connecting the charging device 3 is provided on the side of the gun head 2.

[0046] In some embodiments, a seal 22 is provided at the muzzle 21 of the gun head 2 to seal the gun head and the iron mouth of the blast furnace and prevent the grouting material from overflowing through the gap between the gun head and the iron mouth of the blast furnace.

[0047] In some embodiments, the gun head 2 and the gun body 12 are both configured to be cylindrical, and the connecting portion 11 is configured to be truncated cone-shaped. Specifically, for example, the diameter of the gun head 2 is smaller than the diameter of the gun body 12, and therefore, the connecting portion 11 is configured such that the diameter of the end connected to the gun head 1 is smaller than the diameter of the end connected to the gun body 12.

[0048] In the illustrated embodiment, the charging device 3 includes a charging hopper 31 and a connecting pipe 32, wherein one end of the connecting pipe 32 is connected to the charging hopper 31, and the other end is connected to the cannon head 2. The charging hopper 31 is used to hold grouting material. The charging hopper 31, the connecting pipe 32, and the cannon head 2 are fluidically connected to each other, and the grouting material in the charging hopper 31 can flow into the cannon head 2 via the connecting pipe 32.

[0049] In some embodiments, in order to better control the flow of the grouting material, a flow regulating valve 33 is provided on the connecting pipe 32 , and the injection rate of the grouting material can be controlled by controlling the flow regulating valve 33 .

[0050] In some embodiments, the connecting tube 32 is tilted relative to the charging funnel 31 and the cannon head 2. Specifically, the central axis of the connecting tube 32 and the central axis of the charging funnel 31 do not coincide with each other or are not parallel to each other, and preferably, an acute angle is formed between the two; the central axis of the connecting tube 32 is not perpendicular to the central axis of the cannon head 2.

[0051] In some embodiments, the connecting pipe 32 is configured as a seamless steel pipe. For example, the connecting pipe 22 is configured as a seamless steel pipe with a length of 300 mm and a diameter of 60 mm.

[0052] In some embodiments, the blast furnace iron mouth channel repairing device further includes a drill bit (not shown) used in conjunction with the drill bit, which is used to drill the iron mouth to a predetermined distance so as to achieve connection between the gun muzzle and the blast furnace iron mouth channel.

[0053] Figure 2 The schematic diagram of the blast furnace iron mouth channel repairing device provided by the utility model in the installed state is shown. As shown in the figure, reference numeral 4 indicates the furnace shell, reference numeral 5 indicates the furnace wall, reference numeral 6 indicates the iron mouth mud bag, and reference numeral 7 indicates the iron mouth channel. In the installed state, the muzzle of the gun head 2 of the blast furnace iron mouth channel repairing device is aimed at the blast furnace iron mouth channel 7, which is used to inject grouting material into the blast furnace iron mouth channel 7.

[0054] The process of repairing the blast furnace iron mouth channel by using the blast furnace iron mouth channel repairing device provided by the utility model is as follows: during the iron tapping period of the blast furnace iron mouth, the iron mouth is drilled to a certain depth (for example, about 1.6 meters) with a drill bit (for example, an 85mm drill bit), and the iron mouth is pressed by the blast furnace iron mouth channel repairing device, so that the muzzle 21 of the gun head 2 is fully compacted with the iron mouth to achieve a sufficient seal. The grouting material is injected into the iron mouth from the charging device 3 to fully fill the channel, and then the valve is closed, the mud gun 1 is opened, and the slurry is fully pressed into the iron mouth channel 7 by the piston, and the slurry is dried by the high temperature in the iron mouth channel 7, and the gun is withdrawn after the slurry solidifies. In the actual application process, if the channel cracks cannot be completely eliminated in one time, it can be used repeatedly until the cracks are eliminated.

[0055] The following reference Figure 3-6 Describe the manufacturing process of the blast furnace iron mouth channel repair device provided by the utility model: Figure 3 As shown, a hole (for example, a hole with a diameter of 60 mm) is opened on the gun head 2 in normal use; Figure 4 As shown, prepare a connecting pipe 32 (for example, a seamless steel pipe with a length of 300 mm and a diameter of 60 mm); Figure 5 As shown, make a charging funnel 31; Figure 6 As shown, the opening of the gun head 2 is connected to the connecting pipe 32, and the connecting pipe 32 is connected to the charging funnel 31; finally, Figure 6The installed device shown is installed on the mud gun 1, thereby obtaining the blast furnace iron mouth channel repairing device provided by the utility model.

[0056] To sum up, the blast furnace iron mouth channel repairing device provided by the utility model can utilize the iron-tapping interval of the iron mouth to quickly, safely and economically repair the iron mouth channel of the blast furnace, which takes less time and has a safe operation process. During the repair process, the slurry is squeezed under high pressure by the mud gun, which can effectively fill the cracks in the iron mouth channel. The repair effect is better than that of traditional repair methods.

[0057] The above are exemplary embodiments disclosed by the present utility model. The order disclosed in the above embodiments of the present utility model is only for description and does not represent the advantages and disadvantages of the embodiments. However, it should be noted that the discussion of any of the above embodiments is only exemplary and is not intended to imply that the scope (including claims) disclosed in the embodiments of the present utility model is limited to these examples. Various changes and modifications may be made without departing from the scope defined in the claims. In addition, although the elements disclosed in the embodiments of the present utility model may be described or required in individual form, they may also be understood as multiple unless explicitly limited to the singular.

[0058] Those skilled in the art should understand that the discussion of any of the above embodiments is only exemplary and is not intended to imply that the scope of the disclosure of the embodiments of the present invention (including the claims) is limited to these examples; under the concept of the embodiments of the present invention, the technical features in the above embodiments or different embodiments can also be combined, and there are many other changes in different aspects of the embodiments of the present invention as described above, which are not provided in detail for the sake of simplicity. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present invention should be included in the protection scope of the embodiments of the present invention.

Claims

1. A blast furnace iron mouth channel repair device, characterized in that: include: Mud cannon; A gun head connected to the mud gun, the gun head having a gun mouth for connecting to the iron mouth channel of a blast furnace; A charging device connected to the gun head, wherein the charging device is used to inject grouting material into the gun head.

2. The blast furnace iron mouth channel repairing device according to claim 1, characterized in that: The charging device comprises a charging funnel and a connecting pipe, one end of the connecting pipe is connected to the charging funnel, and the other end is connected to the gun head.

3. The blast furnace iron mouth channel repairing device according to claim 2, characterized in that: The connecting pipe is provided with a flow regulating valve.

4. The blast furnace iron mouth channel repairing device according to claim 2, characterized in that: The connecting pipe is arranged obliquely relative to the charging funnel and the gun head.

5. The blast furnace iron mouth channel repairing device according to claim 1, characterized in that: The mud gun comprises a connecting part and a gun body, wherein the connecting part is used to connect the gun head, and the gun body comprises a mud cylinder and a mud pushing mechanism partially arranged in the mud cylinder.

6. The blast furnace iron mouth channel repairing device according to claim 5, characterized in that: The gun head and the gun body are both cylindrical, and the connecting portion is truncated cone-shaped.

7. The blast furnace iron mouth channel repairing device according to claim 6, characterized in that: The diameter of the gun head is smaller than the diameter of the gun body.

8. The blast furnace iron mouth channel repairing device according to claim 1, characterized in that: A sealing member is provided at the muzzle of the gun head.

9. The blast furnace iron mouth channel repairing device according to claim 1, characterized in that: The blast furnace iron mouth channel repairing device also includes a drill bit used in conjunction with it, and the drill bit is used to drill the iron mouth to a predetermined distance so as to achieve the connection between the gun muzzle and the blast furnace iron mouth channel.

10. The blast furnace iron mouth channel repairing device according to claim 2, characterized in that: The connecting pipe is configured as a seamless steel pipe.

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