Bag-type dust remover for feeding of blast furnace

Abstract

The utility model relates to the technical field of blast furnace feeding, in particular to a bag-type dust remover for blast furnace feeding, which comprises a smoke guide pipe and a dust removal bag mounted at the top of the smoke guide pipe, an inner flow guide pipe is sleeved in the smoke guide pipe, the bottom of the inner flow guide pipe is in an outwards-expanded arc shape, and an annular material guide descending channel is arranged between the smoke guide pipe and the inner flow guide pipe. According to the utility model, the dust scraped off from the dust collecting bag can be conveniently separated from dust-containing airflow flowing up from the bottom of the dust collecting bag, so that the smooth dust collection can be ensured; the dust removal device is simple in structure and convenient to use, dust scraped from the dust removal cloth bag can be conveniently sent to the lower portion again, smooth dust removal is guaranteed, the scraped dust is continuously guided downwards, and the dust removal effect can be kept for a long time.

Description

Technical Field

[0001] The utility model relates to the technical field of blast furnace feeding, in particular to a bag dust collector for blast furnace feeding. Background Technique

[0002] When the blast furnace is burning, it needs to be fed regularly. At the feeding place, dust is easily generated. In order to prevent the dust from flying around, a bag dust collector is generally added above the feeding place for dust removal. However, after long-term use, the dust adhering to the dust removal bag on the bag dust collector becomes more and more, and it is easy to cause blockage. If a dust scraping structure is directly arranged inside the dust removal bag, it is easily reattached to the dust removal bag by the dust-containing air flow surging from the bottom, resulting in poor dust cleaning effect. Therefore, it is necessary to design a bag dust collector for blast furnace feeding that can easily separate the dust scraped from the dust removal bag from the dust-containing air flow surging from the bottom, which can ensure the smooth progress of dust removal, and can also conveniently send the dust scraped from the dust removal bag back to the lower part, ensure the smooth progress of dust removal, and continuously conduct the scraped dust downward, and the dust removal effect can be maintained for a long time. Content of the Utility Model

[0003] (1) Technical Problems to be Solved

[0004] Aiming at the deficiencies of the prior art, the utility model provides a bag dust collector for blast furnace feeding, which can easily separate the dust scraped from the dust removal bag from the dust-containing air flow surging from the bottom, which can ensure the smooth progress of dust removal, and can also conveniently send the dust scraped from the dust removal bag back to the lower part, ensure the smooth progress of dust removal, and continuously conduct the scraped dust downward, and the dust removal effect can be maintained for a long time.

[0005] (2) Technical Solutions

[0006] To achieve the above object, the utility model provides the following technical solutions: A bag dust collector for blast furnace feeding includes a smoke guide pipe and a dust removal bag installed at the top of the smoke guide pipe. An inner flow guide pipe is sleeved inside the smoke guide pipe. The bottom of the inner flow guide pipe is set as an outward-expanded arc shape. An annular material guiding downward channel is arranged between the smoke guide pipe and the inner flow guide pipe. The inside of the inner flow guide pipe is set as a dust upward channel. A self-driven rotation mechanism is arranged inside the dust upward channel. A dust scraping and material guiding structure connected to the top of the self-driven rotation mechanism is arranged inside the dust removal bag. The dust scraping and material guiding structure includes a fixed shaft with a plurality of L-shaped scraping bars circumferentially arranged at the top. The bottom of the fixed shaft is connected to the top of the self-driven rotation mechanism.

[0007] Preferably, the self-driven rotating mechanism, the ash scraping and guiding mechanism, and the dust removal cloth bag can all be detached from the smoke guiding pipe. The dust removal cloth bag and the smoke guiding pipe are connected through a connecting flange. The self-driven rotating mechanism is rotationally inserted and connected to the inside of the inner diversion pipe, and the ash scraping and guiding mechanism is snap-connected to the self-driven rotating mechanism.

[0008] Preferably, the self-driven rotating mechanism includes a rotating shaft fixedly connected with rotating blades. A turntable is fixedly connected to the bottom of the rotating shaft. A support frame that can be rotationally inserted and connected to the turntable is fixedly connected to the inner bottom of the inner diversion pipe. A clamping column is fixedly installed at the bottom of the fixed shaft, and a jack adapted to the clamping column is opened at the top of the rotating shaft.

[0009] Preferably, the bottoms of multiple L-shaped scraping bars are arranged at the top of the annular guiding downward channel and are slidably connected to the smoke guiding pipe and the inner diversion pipe.

[0010] Preferably, the outer bottom of the inner diversion pipe and the inner bottom of the smoke guiding pipe are fixedly connected through multiple inclined cylinders.

[0011] Preferably, the bottom of the smoke guiding pipe is provided with an installation plane through an outwardly expanding arc, and multiple positioning holes are opened on the installation plane.

[0012] (III) Beneficial Effects

[0013] Compared with the prior art, the present utility model provides a bag dust collector for blast furnace charging, which has the following beneficial effects:

[0014] In this bag dust collector for blast furnace charging, by providing an inner diversion pipe and setting the bottom of the inner diversion pipe to be outwardly expanding arc-shaped, the dust-containing gas is concentrated and passes upward through the dust upward channel. While the dust-containing gas is ascending, it drives the self-driven rotating mechanism to rotate, and then drives the ash scraping and guiding mechanism to rotate. Thus, the dust inside the dust removal cloth bag is scraped off by multiple L-shaped scraping bars and is guided to the annular guiding downward channel along with the L-shaped scraping bars, and automatically slides downward. The scraped dust and the upwelling dust-containing gas move up and down in separate channels, and no convection will occur. This bag dust collector for blast furnace charging is convenient for separating the dust scraped from the dust removal cloth bag from the dust-containing air flow surging from the bottom, which can not only ensure the smooth progress of dust removal, but also facilitate the redelivery of the dust scraped from the dust removal cloth bag back to the lower part, ensure the smooth progress of dust removal, and continuously guide the scraped dust downward. The dust removal effect can be maintained for a long time. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the overall disassembled structure of the present utility model;

[0016] Figure 2 is a schematic diagram of the overall disassembled structure of the present utility model from other perspectives;

[0017] Figure 3 It is a schematic structural diagram of a partial sectional view of the overall decomposition of the present utility model;

[0018] Figure 4 It is a schematic structural diagram of the overall present utility model.

[0019] Reference numerals in the drawings: 1, smoke guide pipe; 2, inner flow guide pipe; 3, inclined cylinder; 4, dust removal cloth bag; 5, connecting flange; 6, fixed shaft; 7, L-shaped scraping strip; 8, support frame; 9, rotating shaft; 10, rotating blade; 11, clamping column; 12, turntable; 13, positioning hole. Specific embodiments

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0021] Embodiment:

[0022] Please refer to Figures 1-4 , a bag dust collector for blast furnace charging, including a smoke guide pipe 1 and a dust removal cloth bag 4 installed at the top of the smoke guide pipe 1. An inner flow guide pipe 2 is sleeved inside the smoke guide pipe 1. The bottom of the inner flow guide pipe 2 is set as an outward-expanded arc shape. An annular material guiding downward channel is arranged between the smoke guide pipe 1 and the inner flow guide pipe 2. The inside of the inner flow guide pipe 2 is set as a dust upward channel. A self-driven rotating mechanism is arranged in the dust upward channel. A dust scraping and material guiding structure connected to the top of the self-driven rotating mechanism is arranged inside the dust removal cloth bag 4. The dust scraping and material guiding structure includes a fixed shaft 6 fixedly connected with a plurality of L-shaped scraping strips 7 circumferentially at the top. The bottom of the fixed shaft 6 is connected to the top of the self-driven rotating mechanism.

[0023] Specifically, the self-driven rotating mechanism, the dust scraping and material guiding mechanism, and the dust removal cloth bag 4 can all be detached from the smoke guide pipe 1. The dust removal cloth bag 4 and the smoke guide pipe 1 are connected through a connecting flange 5. The self-driven rotating mechanism is rotationally inserted and connected to the inside of the inner flow guide pipe 2. The dust scraping and material guiding mechanism is clamped and connected to the self-driven rotating mechanism. Connecting flanges 5 are fixedly connected to the bottom of the dust removal cloth bag 4 and the top of the smoke guide pipe 1 respectively. The two connecting flanges 5 can be locked by bolts, so as to facilitate disassembly. The self-driven rotating mechanism is rotationally inserted and connected to the inside of the inner flow guide pipe 2. The dust scraping and material guiding mechanism is clamped and connected to the self-driven rotating mechanism, so that the dust scraping and material guiding mechanism and the self-driven rotating mechanism can both be detached separately.

[0024] Specifically, the self-driven rotating mechanism includes a rotating shaft 9 fixedly connected with a rotating blade 10. The bottom of the rotating shaft 9 is fixedly connected with a turntable 12. The inner bottom of the inner diversion pipe 2 is fixedly connected with a support frame 8 that can be rotatably inserted and connected with the turntable 12. The bottom of the fixed shaft 6 is fixedly installed with a clamping column 11. A jack adapted to the clamping column 11 is provided at the top of the rotating shaft 9. Through the settings of the rotating shaft 9, the rotating blade 10, the support frame 8 and the fixed shaft 6, it is convenient to drive the rotating blade 10 to rotate when the dust-containing gas ascends, and then drive the rotating shaft 9 to rotate. Through the settings of the turntable 12 and the clamping column 11, it is convenient for the rotating shaft 9 to rotate and at the same time drive the fixed shaft 6 to rotate.

[0025] Specifically, the bottoms of multiple L-shaped scraping strips 7 are arranged at the top of the annular material guiding downward channel and are slidably connected with the smoke guiding pipe 1 and the inner diversion pipe 2, which is convenient for supporting and guiding the ash scraping and material guiding mechanism, improving the accuracy of diversion, and at the same time supporting the top of the inner diversion pipe 2.

[0026] Specifically, the outer bottom of the inner diversion pipe 2 and the inner bottom of the smoke guiding pipe 1 are fixedly connected by multiple inclined cylinders 3. Through the multiple inclined cylinders 3, it is convenient to connect the inner diversion pipe 2 and the smoke guiding pipe 1.

[0027] Specifically, the bottom of the smoke guiding pipe 1 is provided with an installation plane through an outward-expanded arc transition, and multiple positioning holes 13 are opened on the installation plane, which is convenient for installation above the charging of the blast furnace.

[0028] It should be noted that phrases such as "one embodiment", "embodiment", "exemplary embodiment", "some embodiments", etc. mentioned in the specification indicate that the described embodiments may include specific features, structures or characteristics, but not necessarily every embodiment includes such specific features, structures or characteristics. In addition, such phrases do not necessarily refer to the same embodiment. In addition, when combining specific features, structures or characteristics with an embodiment, implementing such features, structures or characteristics in combination with other embodiments, whether explicitly or implicitly described, is within the knowledge scope of those skilled in the art.

[0029] It should be easily understood that the terms "on...", "above...", and "over..." in the present disclosure should be interpreted in the broadest manner, so that "on..." not only means "directly on something", but also includes the meaning of "on something" with intermediate features or layers therebetween, and "above..." or "over..." not only includes the meaning of "above or over something", but may also include the meaning of "above or over something" with no intermediate features or layers therebetween (i.e., directly on something).

[0030] In addition, for ease of description, spatial relative terms may be used in this text, such as "below", "beneath", "under", "above", "over", etc., to describe the relationship of one element or feature to another as shown in the figures. Spatial relative terms are intended to encompass different orientations of the device in use or operation other than the orientation shown in the figures. The device may have other orientations (rotated 90 degrees or at other orientations), and the spatial relative descriptors used in this text may be interpreted accordingly.

[0031] It should be noted that in this text, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising a..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A bag dust collector for charging a blast furnace, characterized in that: It includes a smoke guide pipe (1) and a dust removal cloth bag (4) installed on the top of the smoke guide pipe (1). An inner flow guide pipe (2) is sleeved inside the smoke guide pipe (1). The bottom of the inner flow guide pipe (2) is set as an outward-expanded arc. An annular material guiding downward channel is arranged between the smoke guide pipe (1) and the inner flow guide pipe (2). The inside of the inner flow guide pipe (2) is set as a dust upward channel. A self-driven rotating mechanism is arranged in the dust upward channel. A dust scraping and material guiding structure connected to the top of the self-driven rotating mechanism is arranged inside the dust removal cloth bag (4). The dust scraping and material guiding structure includes a fixed shaft (6) circumferentially provided with a plurality of L-shaped scraping strips (7) at the top. The bottom of the fixed shaft (6) is connected to the top of the self-driven rotating mechanism.

2. The bag dust collector for blast furnace charging according to claim 1, characterized in that: The self-driven rotating mechanism, the dust scraping and material guiding mechanism and the dust removal cloth bag (4) can all be disassembled from the smoke guide pipe (1). The dust removal cloth bag (4) and the smoke guide pipe (1) are connected through a connecting flange (5). The self-driven rotating mechanism is rotationally plugged and connected to the inside of the inner flow guide pipe (2). The dust scraping and material guiding mechanism is snap-connected to the self-driven rotating mechanism.

3. The bag dust collector for blast furnace charging according to claim 2, characterized in that: The self-driven rotating mechanism includes a rotating shaft (9) fixedly connected with rotating blades (10). A turntable (12) is fixedly connected to the bottom of the rotating shaft (9). A support frame (8) that can be rotationally plugged and connected to the turntable (12) is fixedly connected to the inner bottom of the inner flow guide pipe (2). A clamping column (11) is fixedly installed at the bottom of the fixed shaft (6). A jack adapted to the clamping column (11) is opened at the top of the rotating shaft (9).

4. The bag dust collector for blast furnace charging according to claim 3, characterized in that: The bottoms of the plurality of L-shaped scraping strips (7) are arranged at the top of the annular material guiding downward channel and are slidably connected to the smoke guide pipe (1) and the inner flow guide pipe (2).

5. The bag dust collector for blast furnace charging according to claim 4, wherein: The outer bottom of the inner flow guide pipe (2) and the inner bottom of the smoke guide pipe (1) are fixedly connected through a plurality of inclined cylinders (3).

6. The bag dust collector for blast furnace charging according to claim 5, wherein: The bottom of the smoke guide pipe (1) is provided with an installation plane through an outward-expanded arc transition. A plurality of positioning holes (13) are opened on the installation plane.

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