Device for replacing small sleeve in blast-furnace tuyere

Abstract

The utility model provides a blast-furnace tuyere small and medium sleeve replacing device which comprises a fixed cross beam, a fixed cross beam, a fixed cross beam and a movable cross beam, wherein the fixed cross beam is fixed with a flange of a tuyere large sleeve; the longitudinal frame penetrates through the fixed cross beam and can move relative to the fixed cross beam; the outer transverse frame is fixedly connected with the longitudinal frame, and the outer transverse frame is located outside the tuyere large sleeve; the inner transverse frame is fixedly connected with the longitudinal frame, and the inner transverse frame is located on the side opposite to the outer transverse frame; and one end of the first connecting rod is connected with the inner cross frame, and the other end of the first connecting rod is provided with a first probe hook. According to the device for replacing the small sleeve in the blast-furnace tuyere, the small sleeve in the blast-furnace tuyere can be rapidly and effectively replaced, time and labor are saved, the operation cost of an enterprise is reduced, and the working efficiency and the personnel safety are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of blast furnaces, in particular to a device for replacing small sleeves in blast furnace tuyere. Background Art

[0002] The small and medium-sized tuyere sleeve is an important device in the blast furnace ironmaking air inlet system. Figure 1 As shown, the large tuyere sleeve 13, the middle tuyere sleeve 12 and the small tuyere sleeve 11 are stacked together to form a channel, and the straight blowing pipe 14 is inserted into the channel to supply air to the blast furnace. The small and medium sleeves of the blast furnace are mostly made of high-purity copper. Due to their extremely harsh working environment, they not only withstand the erosion of high-temperature and high-pressure slag iron, but also withstand the wear of the tuyere by high-temperature airflow and slag skin shedding, which will inevitably lead to water leakage in the small and medium sleeves. Therefore, the small and medium sleeves of the blast furnace tuyere need to be replaced regularly.

[0003] Figure 2 The figure shows a conventional blast furnace tuyere small sleeve replacement device. One end of the slide bar 22 is a barb 21, which is used to hook the tuyere middle sleeve 12 or the tuyere small sleeve 11, and the other end of the slide bar 22 is a handle 25. A slide hammer 23 is arranged on the slide bar 22. The slide hammer 23 can slide along the slide bar 22 on the slide bar 22. A baffle 24 is also arranged on the side close to the handle 25 to limit the movement of the slide hammer 23. When in use, the straight blow pipe 14 is first removed, and then the tuyere middle sleeve 12 or the tuyere small sleeve 11 is hooked with the barb 21. The operator moves the slide hammer 23 back and forth with force, so that the slide hammer 23 continuously hits the baffle 24, and the tuyere middle sleeve 12 or the tuyere small sleeve 11 is continuously loosened under the impact force of the slide hammer 23, and finally removed.

[0004] The traditional replacement method uses a sliding hammer to replace small and medium sleeves of the tuyere, which is relatively time-consuming and labor-intensive, and sometimes requires the use of burning oxygen. Due to the high labor intensity of workers in front of the furnace, the wind-off time is extended, increasing the difficulty of furnace recovery and the cost of molten iron.

[0005] The utility model attempts to provide a device for replacing small sleeves in a blast furnace tuyere, hoping to realize the replacement of small sleeves in a blast furnace tuyere quickly and effectively, saving time and labor. Utility Model Content

[0006] The utility model attempts to provide a device for replacing small sleeves in a blast furnace tuyere, hoping to realize the replacement of small sleeves in a blast furnace tuyere quickly and effectively, saving time and labor.

[0007] The utility model provides a device for replacing small and medium sleeves of a blast furnace tuyere, comprising: a fixed crossbeam, the fixed crossbeam is used to be fixed to the flange of a large tuyere sleeve; a longitudinal frame, the longitudinal frame passes through the fixed crossbeam and can move relative to the fixed crossbeam; an outer crossbeam, the outer crossbeam is fixedly connected to the longitudinal frame, the outer crossbeam is located outside the large tuyere sleeve; an inner crossbeam, the inner crossbeam is fixedly connected to the longitudinal frame, the inner crossbeam is located on a side opposite to the outer crossbeam; and a first connecting rod, one end of the first connecting rod is connected to the inner crossbeam, and the other end of the first connecting rod is provided with a first probe hook.

[0008] Furthermore, the device for replacing small sleeves in the blast furnace tuyere also includes a jack, which is arranged between the fixed beam and the outer cross frame, and the jack is used to apply thrusts in opposite directions to the fixed beam and the outer cross frame.

[0009] Furthermore, a pin is provided on the flange of the large tuyere sleeve, and a corresponding through hole is provided on the fixed crossbeam, and the fixed crossbeam and the large tuyere sleeve are fixed by passing the pin through the through hole.

[0010] Furthermore, the pin is provided with a thread, and the fixing beam and the tuyere sleeve are fixed by passing the pin through the through hole and tightening a nut on the pin.

[0011] Furthermore, a transverse insertion hole is provided on the pin column, and the length of the insertion hole is greater than the thickness of the fixed beam. The fixed beam and the air outlet sleeve are fixed by passing the pin column through the through hole and plugging the insertion hole with a wedge.

[0012] Furthermore, the first connecting rod and the inner cross frame are detachably connected.

[0013] Furthermore, the detachable connection between the first connecting rod and the inner cross frame is a threaded connection.

[0014] Furthermore, the symmetry axes of the fixed crossbeam, the outer cross frame and the inner cross frame coincide with the central axis of the tuyere sleeve.

[0015] Furthermore, the device for replacing small sleeves in the blast furnace tuyere also includes a second connecting rod, and the end of the second connecting rod is a second detection hook.

[0016] Furthermore, the second connecting rod is symmetrically arranged with the first connecting rod.

[0017] The device for replacing small and medium-sized sleeves of blast furnace tuyere provided by the utility model can quickly and effectively realize the replacement of small and medium-sized sleeves of blast furnace tuyere, save time and labor, reduce enterprise operation costs, and improve work efficiency and personnel safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Shown is a schematic diagram of the arrangement of small and medium sets in the blast furnace tuyere.

[0019] Figure 2 Shown is a schematic diagram of an existing small sleeve replacement device for a blast furnace tuyere.

[0020] Figure 3 Shown is a schematic diagram of a small sleeve replacement device for a blast furnace tuyere in one embodiment of the utility model.

[0021] Figure 4 Shown is a schematic diagram of a small sleeve replacement device for a blast furnace tuyere in another embodiment of the utility model.

[0022] Figure 5 Shown Figure 4 A partial enlarged schematic diagram of the illustrated embodiment.

[0023] Figure 6 Shown is a schematic diagram of a small sleeve replacement device for a blast furnace tuyere according to another embodiment of the utility model.

[0024] Reference numerals:

[0025] 11: small tuyere sleeve; 12: middle tuyere sleeve; 13: large tuyere sleeve; 131: flange; 14: straight blowpipe;

[0026] 2: Existing blast furnace tuyere small sleeve replacement device;

[0027] 21: barb; 22: slide bar; 23: slide hammer; 24: baffle; 25: handle;

[0028] 3: The small sleeve replacement device of the blast furnace tuyere in the embodiment of the utility model;

[0029] 31: first probe hook; 32: first connecting rod; 33: fixed crossbeam; 331: pin column; 332: socket; 34: vertical frame;

[0030] 35: outer cross frame; 36: inner cross frame; 37: second probe hook; 38: second connecting rod. DETAILED DESCRIPTION

[0031] In order to provide a further understanding of the purpose, structure, features, and functions of the present invention, the present invention is described in detail below with reference to the embodiments.

[0032] Figure 3 Shown is a schematic diagram of a small sleeve replacement device for a blast furnace tuyere in one embodiment of the utility model.

[0033] like Figure 3As shown, the embodiment of the utility model provides a device for replacing small and medium sleeves of a blast furnace tuyere, comprising: a fixed crossbeam 33, the fixed crossbeam 33 is used to be fixed with the flange 131 of the tuyere large sleeve 13; a longitudinal frame 34, the longitudinal frame 34 passes through the fixed crossbeam 33 and can move relative to the fixed crossbeam 33; an outer crossbeam 35, the outer crossbeam 35 is fixedly connected with the longitudinal frame 34, and the outer crossbeam 35 is located outside the tuyere large sleeve 13; an inner crossbeam 36, the inner crossbeam 36 is fixedly connected with the longitudinal frame 34, and the inner crossbeam 36 is located on the side opposite to the outer crossbeam 35; and a first connecting rod 32, one end of the first connecting rod 32 is connected with the inner crossbeam 36, and the other end of the first connecting rod 32 is provided with a first probe hook 31. The device for replacing small and medium sleeves of a blast furnace tuyere also comprises a jack 4, the jack 4 is arranged between the fixed crossbeam 33 and the outer crossbeam 35, and the jack 4 is used to apply thrusts in opposite directions to the fixed crossbeam 33 and the outer crossbeam 35.

[0034] When in use, the fixed crossbeam 33 is fixed to the flange 131 of the large tuyere sleeve 13, and the longitudinal frame 34 is moved so that the first probe hook 31 hooks the middle tuyere sleeve 12 or the small tuyere sleeve 11, and then the jack 4 exerts force, and the jack 4 applies thrusts in opposite directions to the fixed crossbeam 33 and the outer crossframe 35. Under the action of the jack 4, the middle tuyere sleeve 12 or the small tuyere sleeve 11 can be removed.

[0035] Relative to Figure 2 The existing blast furnace tuyere small and medium sleeve replacement device shown in the utility model does not require the operator to fix the position by holding the handle 25, nor does it need to move the slide hammer 23 to exert force. It only needs to fix the fixed beam 33 and the flange 131 of the large tuyere sleeve 13 and let the jack 4 exert force. It saves time and effort, is fast and efficient, will not affect the production rhythm, and also improves the safety of the operator.

[0036] Figure 4 Shown is a schematic diagram of a small sleeve replacement device for a blast furnace tuyere in another embodiment of the utility model. Figure 5 Shown Figure 4 A partial enlarged schematic diagram of the illustrated embodiment.

[0037] Further, such as Figure 4 As shown, a pin 331 is provided on the flange 131 of the tuyere sleeve 13, and a corresponding through hole is provided on the fixed beam 33, and the fixed beam 33 is fixed to the tuyere sleeve 13 by passing the pin 331 through the through hole. The pin 331 may be provided with a thread, and the fixed beam 33 is fixed to the tuyere sleeve 13 by passing the pin 331 through the through hole and tightening a nut on the pin 331. Fixation can be achieved by tightening the nut on the pin 331, and the operation is relatively simple.

[0038] Further, such as Figure 4 and Figure 5As shown, a transverse insertion hole 332 is provided on the pin 331, and the length of the insertion hole 332 is greater than the thickness of the fixed beam 33. The fixed beam 33 is fixed to the tuyere sleeve 13 by passing the pin 331 through the through hole and plugging the insertion hole 332 with a wedge. This fixing method is faster and more convenient, and when it needs to be removed, it only needs to knock out the wedge with a hammer.

[0039] Furthermore, the first connecting rod 32 and the inner cross frame 36 can be detachably connected, for example, they can be threadedly connected. On the one hand, it is convenient to replace the first connecting rod 32 or the first probe hook 31 when it is damaged, and on the other hand, it is also convenient to adjust the position of the first connecting rod 32 or the first probe hook 31.

[0040] Figure 6 The figure shows a schematic diagram of a small sleeve replacement device for a blast furnace tuyere according to another embodiment of the utility model. Figure 6 As shown, the blast furnace tuyere small sleeve replacement device also includes a second connecting rod 38, and the end of the second connecting rod 38 is a second probe hook 37. The end of the tuyere sleeve is relatively large, and the first connecting rod 32 and the second connecting rod 38 are provided, so that the tension can be applied to the tuyere sleeve at two different positions. Further, the symmetry axis of the fixed crossbeam 33, the outer cross frame 35 and the inner cross frame 36 coincides with the central axis of the tuyere large sleeve 13. The second connecting rod 38 is symmetrically arranged with the first connecting rod 32 to ensure that the tuyere sleeve is evenly stressed.

[0041] Since the first connecting rod 32 and the inner cross frame 36 are detachably connected, when the second connecting rod 38 is needed, the first connecting rod 32 and the second connecting rod 38 can be reconnected at a suitable position. The user can also connect the first connecting rod 32 and the second connecting rod 38 in advance, and when it is needed, Figure 6 When the structure of the embodiment shown is used, it can be used directly.

[0042] The device for replacing small and medium-sized sleeves of blast furnace tuyere provided by the utility model can quickly and effectively realize the replacement of small and medium-sized sleeves of blast furnace tuyere, save time and labor, reduce enterprise operation costs, and improve work efficiency and personnel safety.

[0043] In the description of the present invention, it is necessary to understand that the terms “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside” and “outside” orientations or positional relationships are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0044] The present invention has been described by the above-mentioned relevant embodiments, however, the above-mentioned embodiments are only examples for implementing the present invention. It must be pointed out that the disclosed embodiments do not limit the scope of the present invention. On the contrary, any changes and modifications made without departing from the spirit and scope of the present invention are within the scope of patent protection of the present invention.

Claims

1. A device for replacing small sleeves in blast furnace tuyere, It is characterized in that include: A fixed crossbeam, the fixed crossbeam being used to be fixed to the flange of the tuyere sleeve; A longitudinal frame, the longitudinal frame passes through the fixed crossbeam and can move relative to the fixed crossbeam; An outer cross frame, the outer cross frame is fixedly connected to the longitudinal frame, and the outer cross frame is located outside the tuyere sleeve; an inner cross frame, the inner cross frame being fixedly connected to the longitudinal frame, the inner cross frame being located on a side opposite to the outer cross frame; and A first connecting rod, one end of which is connected to the inner cross frame, and the other end of which is provided with a first probe hook.

2. The blast furnace tuyere small sleeve replacement device according to claim 1, It is characterized in that The utility model also comprises a jack, wherein the jack is arranged between the fixed cross beam and the outer cross frame, and the jack is used for applying thrusts in opposite directions to the fixed cross beam and the outer cross frame.

3. The small sleeve replacement device for blast furnace tuyere according to claim 2, It is characterized in that A pin is arranged on the flange of the large tuyere sleeve, and a corresponding through hole is arranged on the fixed crossbeam. The fixed crossbeam and the large tuyere sleeve are fixed by passing the pin through the through hole.

4. The blast furnace tuyere small sleeve replacement device according to claim 3, It is characterized in that The pin is provided with a thread, and the fixing beam and the tuyere sleeve are fixed by passing the pin through the through hole and tightening a nut on the pin.

5. The blast furnace tuyere small sleeve replacement device according to claim 3, It is characterized in that The pin is provided with a transverse insertion hole, the length of which is greater than the thickness of the fixed beam, and the fixed beam is fixed to the tuyere sleeve by passing the pin through the through hole and plugging the insertion hole with a wedge.

6. The blast furnace tuyere small sleeve replacement device according to claim 2, It is characterized in that The first connecting rod is detachably connected to the inner cross frame.

7. The device for replacing small sleeves in blast furnace tuyere according to claim 6, It is characterized in that The detachable connection between the first connecting rod and the inner cross frame is a threaded connection.

8. The device for replacing small sleeves in blast furnace tuyere according to claim 6, It is characterized in that The symmetry axes of the fixed cross beam, the outer cross frame and the inner cross frame coincide with the central axis of the tuyere sleeve.

9. The small sleeve replacement device for blast furnace tuyere according to claim 8, It is characterized in that It also includes a second connecting rod, the end of which is a second probe hook.

10. The small sleeve replacement device for blast furnace tuyere according to claim 9, It is characterized in that The second connecting rod is symmetrically arranged with the first connecting rod.

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