Sliding hammer type tuyere dismounting tool

Abstract

The invention is suitable for the technical field of blast furnace smelting, and provides a sliding weight type tuyere dismounting tool. Comprising an L-shaped hook head and a sliding weight, the L-shaped hook head comprises a pull rod and a hook head, the hook head is fixedly installed on the pull rod, the sliding weight is arranged on the pull rod in a sliding mode in the length direction of the pull rod, and a limiting mechanism is arranged on the pull rod and used for limiting the sliding stroke of the sliding weight; the two sides of the sliding weight are each provided with a rope tying mechanism, and the rope tying mechanisms can be of a semicircular ring structure or of a triangular structure. The specific structure of the rope tying mechanism can be set according to needs. The limiting mechanism can be a groove formed in the outer side of the hook head, the groove is formed in the length direction of the hook head, and the sliding weight is arranged in the groove in a sliding and sleeved mode. Therefore, the sliding distance of the sliding weight is limited. The tuyere is disassembled by using the sliding weight type disassembling tool, so that the disassembling time of the deformed tuyere can be greatly shortened.

Description

Technical Field

[0001] The invention relates to the technical field of blast furnace smelting, in particular to a sliding hammer type tuyere disassembly tool. Background Art

[0002] Blast furnace tuyere needs to be replaced frequently or regularly due to burnout caused by slag and iron contact, hot air burnout, aging cracking, and burnout caused by alkali metals. In the traditional operation mode, the tuyere is removed by shaking the two cooling water pipes of the tuyere after the blast is stopped, or by burning the tuyere sleeve. Since the tuyere is in close contact with the two sets when it is on the tuyere, and it is often deformed after being damaged, it is difficult to remove it by the shaking method and it takes a long time. When burning the tuyere with oxygen, firstly, the flame temperature is difficult to control, which can easily cause the two sets to burn out, and secondly, the tuyere area is narrow, which can easily cause injuries to people when burning the tuyere. With the use of a small hook auxiliary tool, the difficulty and time of tuyere disassembly are shortened, but when the tuyere is deformed due to burnout, it is still difficult to disassemble the tuyere; in order to solve this technical problem, a sliding hammer type tuyere disassembly tool is proposed. Summary of the invention

[0003] The object of the present invention is to provide a sliding hammer type tuyere disassembly tool to solve the problems raised in the above background technology.

[0004] To achieve the above object, the present invention provides the following technical solutions: A sliding hammer type air outlet disassembly tool comprises: an L-shaped hook head and a sliding hammer, the L-shaped hook head comprises a pull rod and a hook head, the hook head is fixedly mounted on the pull rod, the sliding hammer is slidably arranged on the pull rod along the length direction of the pull rod, a limiting mechanism is arranged on the pull rod, and the limiting mechanism is used to limit the sliding stroke of the sliding hammer; rope mechanisms are arranged on both sides of the sliding hammer.

[0005] This solution can greatly shorten the disassembly time of the deformed tuyere by using a sliding hammer type disassembly tool to disassemble the tuyere.

[0006] As a further solution of the present invention: the tethering mechanism is a semicircular ring structure.

[0007] As a further solution of the present invention: the tethering mechanism is a triangular structure.

[0008] As a further solution of the present invention: the limiting mechanism is a groove arranged on the outside of the hook head, the groove is arranged along the length direction of the hook head, and the sliding hammer is slidably sleeved in the groove.

[0009] As a further solution of the present invention: the limiting mechanism includes a first stopper and a second stopper, the first stopper is arranged in the middle position of the pull rod, and the second stopper is fixedly installed at the end of the pull rod away from the hook head.

[0010] As a further solution of the present invention: the sliding hammer is slidably arranged between the first stopper and the second stopper.

[0011] As a further solution of the present invention: the pull rod is made of a seamless steel pipe.

[0012] As a further solution of the present invention: the length of the pull rod is 4m and the diameter is 50mm.

[0013] As a further solution of the present invention: the preparation method of the sliding hammer type tuyere disassembly tool comprises: Step 1: Make an L-shaped hook. The length and thickness of the hook tail can meet the strength requirements when hooking the air outlet. Step 2: Make a sliding hammer and make rope-tying mechanisms on both sides of the sliding hammer to facilitate rope-tying.

[0014] Step 3: Install the slide hammer on the pull rod of the L-shaped hook.

[0015] As a further solution of the present invention: the method for using the sliding hammer type tuyere disassembly tool comprises: after the blast furnace stops blowing back, a space capable of accommodating a hook head is dug out at the upper, lower, left and right ends of the broken tuyere; Insert the hook head deep into the space behind the tuyere and loosen the tuyere by pulling the slide hammer rope back and forth.

[0016] Compared with the prior art, the beneficial effect of the present invention is that the time for disassembling the deformed tuyere can be greatly shortened by using a slide hammer type disassembly tool to disassemble the tuyere. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The present invention is a schematic structural diagram of a sliding hammer type tuyere disassembly tool according to an embodiment of the present invention.

[0018] Figure 2 The present invention is a schematic diagram of the internal structure of a sliding hammer in a sliding hammer type tuyere disassembly tool according to an embodiment of the present invention.

[0019] Figure 3 It is a schematic diagram of the structure of a sliding hammer in a sliding hammer type tuyere disassembly tool according to an embodiment of the present invention.

[0020] Figure 4 The figure is a schematic diagram of the dimensions of a sliding hammer type tuyere disassembly tool according to an embodiment of the present invention.

[0021] In the picture: 10-L-type hook, 20-slide hammer; 101-pull rod, 102-hook head, 103-first stopper, 104-second stopper; 201-tether mechanism. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] The present invention provides Figure 1 The present invention is a schematic structural diagram of a sliding hammer type tuyere disassembly tool according to an embodiment of the present invention. Figure 2 The present invention is a schematic diagram of the internal structure of a sliding hammer in a sliding hammer type tuyere disassembly tool according to an embodiment of the present invention. Figure 3 The present invention is a schematic diagram of the structure of a sliding hammer in a sliding hammer type tuyere disassembly tool according to an embodiment of the present invention. The existing blast furnace tuyere needs to be replaced frequently or regularly due to burnout caused by slag iron contact, hot air burnout, aging cracking, and burnout caused by alkali metals. In the traditional operation mode, the tuyere is removed by shaking the two cooling water pipes of the tuyere after the blast is stopped, or by burning the tuyere sleeve. Since the tuyere is in close contact with the two sets when the tuyere is on, and deformation occurs more often after damage, it is difficult to remove it using the shaking method and it takes a long time. When burning the tuyere with oxygen, firstly, the flame temperature is difficult to control, which easily causes the two sets to burn out, and secondly, the tuyere area is narrow, which easily causes injuries to people when burning the tuyere. With the use of a small hook auxiliary tool, the difficulty and time of tuyere disassembly are shortened, but when the tuyere is deformed due to burnout, it is still difficult to disassemble the tuyere; in order to solve this technical problem, a sliding hammer type tuyere disassembly tool is proposed.

[0024] Example 1 See also Figure 1 to Figure 3 , a structural diagram of a sliding hammer type air outlet disassembly tool provided in an embodiment of the present invention, the sliding hammer type air outlet disassembly tool comprises: an L-shaped hook head 10 and a sliding hammer 20, the L-shaped hook head 10 comprises a pull rod 101 and a hook head 102, the hook head 102 is fixedly mounted on the pull rod 101, the sliding hammer 20 is slidably arranged on the pull rod 101 along the length direction of the pull rod 101, a limiting mechanism is arranged on the pull rod 101, and the limiting mechanism is used to limit the sliding stroke of the sliding hammer 20; rope mechanisms 201 are arranged on both sides of the sliding hammer 20.

[0025] In some embodiments, the tether mechanism 201 may be a semicircular ring structure, or a triangular structure. The specific structure of the tether mechanism 201 may be set as required.

[0026] In some embodiments, the limiting mechanism may be a groove disposed on the outside of the hook head 102, the groove being arranged along the length direction of the hook head 102, and the slide hammer 20 being slidably sleeved in the groove, thereby limiting the sliding distance of the slide hammer 20.

[0027] In some other embodiments, the limiting mechanism includes a first stopper 103 and a second stopper 104, wherein the first stopper 103 is disposed in the middle of the pull rod 101, and the second stopper 104 is fixedly mounted at the end of the pull rod 101 away from the hook head 102. The slide hammer 20 is slidably disposed between the first stopper 103 and the second stopper 104.

[0028] In some embodiments, the pull rod 101 is made of a seamless steel pipe.

[0029] The present invention can greatly shorten the disassembly time of the deformed tuyere by using a slide hammer type disassembly tool to disassemble the tuyere.

[0030] An embodiment of the present invention also provides a method for preparing and using a sliding hammer type tuyere disassembly tool, comprising: Step 1: Make an L-shaped hook 10, the length and thickness of the tail end of the hook can meet the strength requirements when hooking the air outlet; Step 2: Make a sliding hammer 20, and make rope tying mechanisms 201 on both sides of the sliding hammer 20 to facilitate rope tying.

[0031] Step 3: Install the slide hammer 20 on the pull rod 101 of the L-shaped hook head 10.

[0032] Step 4: After the blast furnace is shut down and the air is reversed, a space is dug out at the end of the bad air outlet to accommodate the hook head 102; Step 5: Insert the hook head 102 into the rear space of the tuyere, and loosen the tuyere by pulling the sliding hammer rope back and forth.

[0033] Example 1 like Figure 4 As shown, the present invention provides a method for preparing a slide hammer type disassembly tool, which is specifically as follows: Step 1: Make an L-shaped hook 10, which consists of a pull rod 101 and a hook 102. The pull rod 101 is 4 meters long and 50 mm in diameter, and is 90 degrees to the hook 102. The L end is 100 mm long and 100 mm thick. Step 2: Make a cylindrical steel block with an outer diameter of 200mm, an inner diameter of 60mm, and a length of 200mm. Weld semicircular rings with a diameter of 100mm on both sides of the steel block for roping. The slide hammer is completed; Step 3: Insert the slide hammer 20 into the front end 2m of the pull rod 101 of the L-shaped hook 10, and weld a 200mm diameter circular stopper at the front end and 2m of the pull rod for rope insertion, so as to form the effective stroke length and space of the slide hammer; Step 4: After the blast furnace is shut down and the air is reversed, a space of 200mm×200mm×200mm in length, width and depth is dug out at the end of the bad air outlet to accommodate the hook head's deep movement; Step 5: Insert the hook head 102 deep into the rear space of the air outlet, and pull the ropes on both sides of the sliding hammer 20 back and forth to form an impact force to loosen the deformed air outlet so as to remove it.

[0034] The auxiliary device described in the present invention can be effectively used in actual production operations. For example, after the fourth blast furnace of Panzhihua Iron and Steel Group adopted the method described in the present invention, the on-site application was normal. The effect after implementation was obvious: Before the transformation, it was difficult to dismantle a deformed tuyere successfully. The basic method was to burn it out, which took 60 minutes. After the transformation, the dismantling time was shortened to 30 minutes. According to the requirements, the plant replaces 20 deformed tuyere each year. Based on the daily output of 19,000 tons of the plant's five blast furnaces, the average is 26.4 tons / blast furnace*10 minutes, and the profit per ton of iron is 300 yuan.

[0035] Benefit = 19000 ÷ 1440 × 10 ÷ 5 × 300 × 20 × (60-30) = 4.75 million yuan.

[0036] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, 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 orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0037] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0038] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0040] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0041] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A sliding hammer type tuyere removal tool, characterized in that: include: An L-shaped hook head (10) and a sliding hammer (20), wherein the L-shaped hook head (10) comprises a pull rod (101) and a hook head (102), wherein the hook head (102) is fixedly mounted on the pull rod (101), and the sliding hammer (20) is slidably arranged on the pull rod (101) along the length direction of the pull rod (101), and a limiting mechanism is arranged on the pull rod (101), and the limiting mechanism is used to limit the sliding stroke of the sliding hammer (20); rope mechanisms (201) are arranged on both sides of the sliding hammer (20).

2. A sliding hammer type tuyere removal tool according to claim 1, characterized in that: The tether mechanism (201) is a semicircular ring structure.

3. A sliding hammer type tuyere removal tool according to claim 1, characterized in that: The tether mechanism (201) is a triangular structure.

4. A sliding hammer type tuyere removal tool according to claim 1, characterized in that: The limiting mechanism is a groove arranged on the outside of the hook head (102), the groove is arranged along the length direction of the hook head (102), and the sliding hammer (20) is slidably sleeved in the groove.

5. A sliding hammer type tuyere removal tool according to claim 1, characterized in that: The limiting mechanism comprises a first stopper (103) and a second stopper (104), wherein the first stopper (103) is arranged at a middle position of the pull rod (101), and the second stopper (104) is fixedly mounted at an end of the pull rod (101) away from the hook head (102).

6. A sliding hammer type tuyere removal tool according to claim 5, characterized in that: The sliding hammer (20) is slidably disposed between the first stopper (103) and the second stopper (104).

7. A sliding hammer type tuyere removal tool according to claim 1, characterized in that: The pull rod (101) is made of a seamless steel pipe.

8. A sliding hammer type tuyere removal tool according to claim 7, characterized in that: The pull rod (101) is 4 m long and 50 mm in diameter.

9. A sliding hammer type tuyere removal tool according to claim 1, characterized in that: The preparation method of the sliding hammer type tuyere disassembly tool comprises: Step 1: Make an L-shaped hook (10), the length and thickness of the tail end of the hook can meet the strength requirements when hooking the air outlet; Step 2: Make a sliding hammer (20), and make rope tying mechanisms (201) on both sides of the sliding hammer (20) to facilitate rope tying; Step 3: Install the slide hammer (20) on the pull rod (101) of the L-shaped hook (10).

10. A sliding hammer type tuyere removal tool according to claim 1, characterized in that: The method for using the sliding hammer type tuyere disassembly tool comprises: after the blast furnace stops blowing back, a space capable of accommodating a hook head (102) is dug out at the end of the damaged tuyere in the upper, lower, left and right directions; the hook head (102) is inserted deeply into the space at the rear of the tuyere, and the sliding hammer rope is pulled back and forth to loosen the tuyere.

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