Desulfurization stirring head dust collection device

Abstract

The utility model relates to the technical field of desulfurization stirring, in particular to a dust collection device for a desulfurization stirring head, which comprises a stirring head for stirring molten iron and a dust collection mechanism, and further comprises a circular ring sleeved on the stirring head; the first dust collection cover is fixed on the circular ring; the second dust suction hood is fixed on the circular ring and surrounds the stirring head together with the first dust suction hood; one end of the first dedusting branch pipe is arranged on the first dust hood, and the other end of the first dedusting branch pipe is connected with the main dedusting pipe; according to the utility model, the problem that a large amount of dust in a desulfurization station area overflows due to the fact that dust suction ports on the two sides of the desulfurization station cannot effectively suck dust due to too long distance when the existing molten iron is desulfurized is solved, and the problem that the dust in the desulfurization station area overflows when the molten iron is desulfurized is solved, so that the dust in the desulfurization station area cannot be effectively sucked, and the dust in the desulfurization station area cannot be effectively sucked by the dust suction ports on the two sides of the desulfurization station. And the generated smoke dust is comprehensively absorbed, so that the smoke dust is prevented from being scattered in a desulfurization station area to cause pollution, and the dust removal efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of desulfurization and stirring, in particular to a dust suction device for a desulfurization stirring head. Background Art

[0002] Before molten iron enters the steelmaking process, it needs to be desulfurized. The entire process of molten iron desulfurization requires adding desulfurizers and other powdered additives to the molten iron, and using a stirring head to continuously rotate and stir the molten iron. During the molten iron stirring and desulfurization process, a large amount of high-calorie smoke is generated, and the high-temperature smoke rushes out directly from the stirring head hole.

[0003] In the prior art, such as the Chinese patent: CN2021107794736, publication date: 2021-10-08, a desulfurization stirring head is disclosed, comprising a main body and a double-layer stirring paddle arranged on the outer peripheral surface of the main body; a blow pipe is passed through the interior of the main body, and the two ends of the blow pipe are a desulfurizer inlet and a desulfurizer outlet, respectively. The above-mentioned desulfurization stirring head sprays the desulfurizer into the molten iron through the blow pipe inside the stirring head. This invention utilizes the advantages of mechanical stirring desulfurization and spray desulfurization, ensures the desulfurization efficiency, reduces the generation of dust, and is conducive to improving the on-site working environment; and the design of the two-layer stirring paddle can make the molten iron form a vortex turbulence, effectively avoid the generation of large bubbles, and extend the floating stroke and time of the desulfurizer, thereby improving the dynamic performance of molten iron desulfurization and the utilization rate of the desulfurizer.

[0004] However, this invention can only reduce the generation of dust, but cannot remove the dust generated by stirring. When desulfurization stirring is carried out, a large amount of dust overflows, which will cause serious environmental pollution in the desulfurization station area, thereby increasing the labor intensity of workers' cleaning.

[0005] Therefore, the utility model provides a desulfurization stirring head dust collection device. Utility Model Content

[0006] The purpose of the utility model is to propose a desulfurization stirring head dust suction device, which solves the problem that the existing molten iron cannot remove the dust generated by stirring during desulfurization, causing a large amount of dust to overflow from the desulfurization station and seriously pollute the environment. It realizes the comprehensive absorption of the smoke and dust generated during desulfurization of the molten iron, avoids the smoke and dust from being scattered in the desulfurization station area and causing pollution, thereby greatly improving the dust removal efficiency.

[0007] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a desulfurization stirring head dust collection device, comprising: a stirring head for stirring molten iron, and further comprising:

[0008] Dust collection mechanism, including:

[0009] A circular ring, sleeved on the stirring head;

[0010] a first dust collecting hood fixed to the circular ring;

[0011] a second dust hood fixed to the ring and surrounding the stirring head together with the first dust hood;

[0012] a first dust removal branch pipe, one end of which is provided on the first dust collection hood and the other end of which is connected to the main dust removal pipe;

[0013] The second dust removal branch pipe has one end arranged on the second dust hood and the other end connected to the main dust removal pipe. A large amount of smoke and dust generated by the stirring head is discharged through the main dust removal pipe.

[0014] Preferably, the first dust hood and the second dust hood are both semicircular structures, and the cross-sections are both rectangular structures.

[0015] Preferably, a semi-annular cavity is provided inside the first dust hood and the second dust hood.

[0016] Preferably, the bottom of the first dust hood is provided with a plurality of first dust suction ports in a circular circumferential direction with the axis as the center, the bottom of the second dust hood is provided with a plurality of second dust suction ports in a circular circumferential direction with the axis as the center, the inner side of the semicircular structure of the first dust hood is provided with a plurality of third dust suction ports in a circular circumferential direction with the axis as the center, and the inner side of the semicircular structure of the second dust hood is provided with a plurality of fourth dust suction ports in a circular circumferential direction with the axis as the center.

[0017] Preferably, the plurality of first dust suction ports are connected to the plurality of third dust suction ports in a one-to-one correspondence, and the plurality of second dust suction ports are connected to the plurality of fourth dust suction ports in a one-to-one correspondence.

[0018] Preferably, a baffle is provided below the stirring head, and a circular hole is provided on the baffle for the stirring head to pass through;

[0019] When the stirring head moves downward, after the bottom of the first dust hood and the bottom of the second dust hood on the stirring head contact the top of the baffle, the first dust hood and the second dust hood close the circular hole, and the first dust suction port on the first dust suction port and the second dust suction port on the second dust suction port are respectively located above the inner side of the circular hole on the baffle.

[0020] Preferably, the stirring head comprises:

[0021] a sleeve connected to the inner side of the ring;

[0022] A rotating shaft rotatably disposed inside the sleeve;

[0023] A stirring paddle is provided at the bottom of the rotating shaft, and the stirring paddle is driven by the rotating shaft to stir the molten iron.

[0024] Beneficial effects of the utility model:

[0025] The utility model provides a dust suction mechanism on the stirring head, absorbs the smoke generated by the molten iron through the first dust suction hood and the second dust suction hood on the dust suction mechanism, and reduces the loss of dust removal suction force through multiple dust suction ports, thereby avoiding the smoke and dust from being scattered in the desulfurization station area and causing pollution, thereby greatly improving the dust removal efficiency.

[0026] The utility model sets the dust collection hood as two semicircles with a rectangular cross section, so that the dust collection hood and the stirring head cooperate with each other, thereby greatly reducing the height space occupied to meet the needs of equipment operation in the stirring head area. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a top view of the entire utility model.

[0028] Figure 2 It is a partial cross-sectional view of the entire utility model.

[0029] In the figure: 1. stirring head; 11. sleeve; 12. rotating shaft; 13. stirring paddle; 2. dust suction mechanism; 21. first dust suction hood; 211. first dust suction port; 212. third dust suction port; 22. second dust suction hood; 221. second dust suction port; 222. fourth dust suction port; 23. first dust removal branch pipe; 24. second dust removal branch pipe; 25. main dust removal pipe; 26. semi-annular cavity; 3. circular ring; 4. baffle; 41. circular hole; 5. molten iron ladle. DETAILED DESCRIPTION

[0030] The following is a further description of the method of use of the present invention in conjunction with the accompanying drawings and specific implementation methods.

[0031] like Figure 1 and Figure 2 As shown, a desulfurization stirring head 1 dust collection device includes: a stirring head 1 for stirring molten iron, and also includes:

[0032] The dust collection mechanism 2 comprises:

[0033] A ring 3 is sleeved on the stirring head 1;

[0034] A first dust collecting cover 21 is fixed to the ring 3;

[0035] A second dust hood 22 is fixed to the ring 3 and surrounds the stirring head 1 together with the first dust hood 21;

[0036] The first dust collection hood 21 and the second dust collection hood 22 are used to absorb the generated smoke and dust.

[0037] A first dust removal branch pipe 23, one end of which is provided on the first dust collection hood 21 and the other end of which is connected to the main dust removal pipe 25;

[0038] One end of the second dust removal branch pipe 24 is provided on the second dust collection hood 22 , and the other end is connected to the main dust removal pipe 25 . A large amount of smoke and dust generated by the stirring head 1 is discharged through the main dust removal pipe 25 .

[0039] The first dust hood 21 and the second dust hood 22 are both semicircular in structure and rectangular in cross section. The rectangular cross section of the first dust hood 21 and the second dust hood 22 can reduce the height space occupied to meet the operation requirements of the equipment in the mixing head zone 1.

[0040] A semi-annular cavity 26 is defined inside the first dust collection hood 21 and the second dust collection hood 22 .

[0041] The bottom of the first dust hood 21 is provided with a plurality of first dust suction ports 211 in a circular circumferential direction with the axis as the center, the bottom of the second dust hood 22 is provided with a plurality of second dust suction ports 221 in a circular circumferential direction with the axis as the center, the inner side of the semicircular structure of the first dust hood 21 is provided with a plurality of third dust suction ports 212 in a circular circumferential direction with the axis as the center, and the inner side of the semicircular structure of the second dust hood 22 is provided with a plurality of fourth dust suction ports 222 in a circular circumferential direction with the axis as the center.

[0042] This type of suction port not only meets the dust collection requirements but also reduces the loss of dust removal suction power. It improves the dust removal effect of the desulfurization mixing head area 1, prevents dust from scattering and causing pollution at the work site, reduces manpower and material resources during cleaning, and saves costs. The annual cost savings are approximately 54,600 yuan.

[0043] The first suction ports 211 are connected to the third suction ports 212 in a one-to-one correspondence, and the second suction ports 221 are connected to the fourth suction ports 222 in a one-to-one correspondence, thereby increasing the dust absorption efficiency of each suction port.

[0044] A baffle 4 is provided below the stirring head 1, and a circular hole 41 is provided on the baffle 4 for the stirring head 1 to pass through;

[0045] When the stirring head 1 moves downward, the bottom of the first dust hood 21 and the bottom of the second dust hood 22 on the stirring head 1 contact the top of the baffle 4, and the first dust hood 21 and the second dust hood 22 close the circular hole 41. The first dust suction port 211 on the first dust suction port 21 and the second dust suction port 221 on the second dust suction port 22 are respectively located above the inner side of the circular hole 41 on the baffle 4. The baffle 4 is used to prevent the molten iron from splashing out during stirring.

[0046] The stirring head 1 comprises:

[0047] The sleeve 11 is connected to the inner side of the ring 3;

[0048] A rotating shaft 12 is rotatably disposed inside the sleeve 11;

[0049] The stirring paddle 13 is provided at the bottom of the rotating shaft 12 and is driven by the rotating shaft 12 to stir the molten iron. The stirring head 1 rotates inside the sleeve 11 via the rotating shaft 12, thereby driving the stirring paddle 13 to rotate and stir the molten iron. The ring 3 and the first and second dust hoods 21 and 22 connected to the sleeve 11 will not rotate with the rotating shaft 12, thereby fully absorbing the smoke and dust, preventing the smoke and dust from falling on the desulfurization station area and causing pollution, thereby greatly improving the dust removal efficiency.

[0050] Working process: When desulfurizing molten iron, it is necessary to add powdered additives such as desulfurizer to the molten iron inside the molten iron tank 5. The operator gives a downward signal to the stirring head 1 through the computer, and the stirring head 1 moves downward and extends into the molten iron, thereby stirring the molten iron. The control valve of the dust collection mechanism 2 automatically opens and starts working. As the stirring head 1 rotates, a large amount of smoke and dust will be generated in the molten iron and enter the first dust collection hood 21 through the first dust collection port 211 and the third dust collection port 212. At the same time, the smoke and dust will be removed through the second dust collection port 221. The smoke enters the second dust hood 22 through the fourth dust suction port 222. After the smoke enters the semi-annular cavity 26 of the first dust hood 21 and the second dust hood 22, it will pass through the first dust removal branch pipe 23 and the second dust removal branch pipe 24 respectively into the main dust removal pipe 25, thereby removing a large amount of smoke and dust generated by the molten iron, avoiding the smoke and dust scattering at the work site to cause pollution, reducing cleaning time, and saving labor costs. After the smelting is completed, when the stirring head 1 rises to the highest position, the dust collection mechanism 2 control valve is automatically closed to avoid energy waste.

[0051] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. However, any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A desulfurization stirring head dust collection device, comprising: The stirring head (1) for stirring molten iron is characterized by further comprising: The dust collecting mechanism (2) comprises: A circular ring (3) is sleeved on the stirring head (1); A first dust collecting cover (21) fixed to the circular ring (3); A second dust hood (22) is fixed to the ring (3) and surrounds the stirring head (1) together with the first dust hood (21); a first dust removal branch pipe (23), one end of which is provided on the first dust collecting hood (21) and the other end of which is connected to the main dust removal pipe (25); A second dust removal branch pipe (24) has one end disposed on the second dust collecting hood (22) and the other end connected to the main dust removal pipe (25). A large amount of smoke and dust generated by the stirring head (1) is discharged through the main dust removal pipe (25).

2. A desulfurization stirring head dust collection device according to claim 1, characterized in that: The first dust collection hood (21) and the second dust collection hood (22) are both semicircular structures, and their cross sections are both rectangular structures.

3. A desulfurization stirring head dust collection device according to claim 1, characterized in that: A semi-annular cavity (26) is provided inside each of the first dust collection hood (21) and the second dust collection hood (22).

4. A desulfurization stirring head dust collection device according to claim 2, characterized in that: The bottom of the first dust hood (21) is provided with a plurality of first dust suction ports (211) in a circular circumferential direction with the axis as the center, and the bottom of the second dust hood (22) is provided with a plurality of second dust suction ports (221) in a circular circumferential direction with the axis as the center. The inner side of the semicircular structure of the first dust hood (21) is provided with a plurality of third dust suction ports (212) in a circular circumferential direction with the axis as the center, and the inner side of the semicircular structure of the second dust hood (22) is provided with a plurality of fourth dust suction ports (222) in a circular circumferential direction with the axis as the center.

5. A desulfurization stirring head dust collection device according to claim 4, characterized in that: The plurality of first dust suction ports (211) are connected to the plurality of third dust suction ports (212) in a one-to-one correspondence, and the plurality of second dust suction ports (221) are connected to the plurality of fourth dust suction ports (222) in a one-to-one correspondence.

6. A desulfurization stirring head dust collection device according to claim 5, characterized in that: A baffle (4) is provided below the stirring head (1), and a circular hole (41) is provided on the baffle (4) for the stirring head (1) to pass through; When the stirring head (1) moves downward, the bottom of the first dust hood (21) and the bottom of the second dust hood (22) on the stirring head (1) contact the top of the baffle (4), and the first dust hood (21) and the second dust hood (22) close the circular hole (41). The first dust suction port (211) on the first dust suction port (21) and the second dust suction port (221) on the second dust suction port (22) are respectively located above the inner side of the circular hole (41) on the baffle (4).

7. The desulfurization stirring head dust collection device according to claim 1, characterized in that: The stirring head (1) comprises: A sleeve (11) connected to the inner side of the ring (3); A rotating shaft (12) is rotatably disposed inside the sleeve (11); A stirring paddle (13) is provided at the bottom of the rotating shaft (12), and the stirring paddle (13) stirs the molten iron through the driving of the rotating shaft (12).

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