Dust exhaust device used in iron mixing process of converter

Abstract

The utility model provides a dust exhaust device used in the iron mixing process of a converter, which comprises a support erected right above a molten iron tank, a dust exhaust hood opposite to a tank opening of the molten iron tank is arranged on the support, the dust exhaust hood is lifted up and down through a lifting air cylinder, a dust exhaust pipeline is communicated with the outer side of the dust exhaust hood, and the dust exhaust pipeline is communicated with the molten iron tank. A powerful fan is arranged in the dust exhaust pipeline close to one end of the dust exhaust hood, a spraying mechanism is arranged in the dust exhaust pipeline far away from one end of the dust exhaust hood, and the lifting cylinder and the spraying mechanism are respectively connected with a controller; the device is low in manufacturing cost, has no safety risk, can achieve the purpose of controlling dust overflow to influence the environment, and effectively ensures the body health of converter steelmaking workers.

Description

Technical Field

[0001] The utility model belongs to the technical field of steelmaking process devices, and in particular relates to a dust removal device used in the process of adding iron to a converter. Background Art

[0002] With the development of society, the environmental protection requirements for all walks of life are increasing day by day. Among them, low emissions and ultra-low emissions of steel enterprises are the focus, and emissions from converter steelmaking are the key link. However, in the process of adding iron to the converter, a large amount of thick high-temperature flames are generated under the influence of high-temperature molten iron, and mixed with a large amount of pollutants such as iron oxide dust, which directly pollute the environment in the steelmaking plant. Especially for enterprises whose dust removal systems are not very complete, the pollution impact is more obvious, affecting the health of front-line workers in converter steelmaking. To this end, a device to reduce dust overflow in the converter iron-adding process is studied, aiming to reduce dust and other pollutants generated in the iron-adding process and improve the working environment in the steelmaking plant. Summary of the invention

[0003] The utility model provides a dust removal device used in the converter iron adding process, which has low manufacturing cost, no safety risk, and can achieve the purpose of controlling dust overflow and affecting the environment, and effectively ensure the health of converter steel workers. The specific scheme is as follows:

[0004] A dust removal device used in a converter iron charging process comprises a bracket erected directly above a molten iron tank, the bracket being provided with a dust removal hood opposite to a filling port of the molten iron tank, the dust removal hood being lifted up and down by a lifting cylinder, a dust removal pipe being connected to the outer side of the dust removal hood, a powerful fan being provided inside the dust removal pipe near one end of the dust removal hood, a spray mechanism being provided inside the end of the dust removal duct away from the dust removal hood, and the lifting cylinder and the spray mechanism being respectively connected to a controller.

[0005] Furthermore, there are at least two dust exhaust pipes which are arranged at intervals on the dust exhaust hood, and two groups of corresponding spray mechanisms are also provided.

[0006] Furthermore, the dust exhaust duct is an inverted L-shaped structure, the powerful fan is on one section of the inverted L-shaped dust exhaust duct, and the spray mechanism is arranged on the other section of the inverted L-shape.

[0007] Furthermore, the spray mechanism comprises an annular spray pipe arranged on the dust exhaust pipe, a plurality of aerosol nozzles are evenly spaced inside the annular spray pipe, and the annular spray pipe is connected to the high-pressure spray gun through a pipeline.

[0008] Furthermore, the plurality of aerosol nozzles are arranged to be inclined toward the powerful fan side.

[0009] Furthermore, vertical downward guide rods are provided on the brackets on both sides of the lifting cylinder, the bottom ends of the two guide rods pass through the brackets and are fixedly connected to the dust cover, and guide sleeves are provided on the outer sides of the guide rods on the upper and lower sides of the bracket.

[0010] Furthermore, the dust hood is a hemispherical structure, and the diameter of the dust hood is larger than the diameter of the filling port of the molten iron tank.

[0011] The beneficial effects of the utility model are:

[0012] The utility model discloses a dust exhaust device used in the process of adding iron to a converter. By arranging a lifting cylinder, a dust exhaust hood, a powerful fan and a spray mechanism, when the converter is adding iron, the lifting cylinder is controlled to be started to lower the dust exhaust hood to just above the molten iron tank, and then the powerful fan and the spray mechanism are controlled to be started. Under the action of the powerful fan, a large amount of pollutants such as oxidized iron scale dust generated by the high-temperature molten iron in the process of adding iron to the converter can pass through the dust exhaust pipe, and the aerosol water sprayed from the aerosol nozzle can be condensed into small particles when it contacts with the pollutants such as oxidized iron scale dust and be discharged from the end of the dust exhaust pipe, so as to achieve the purpose of controlling the dust from overflowing and affecting the environment. The device has low manufacturing cost and no safety risk, and can achieve the purpose of controlling the dust from overflowing and affecting the environment, effectively ensuring the health of converter steelmaking workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 and Figure 2 All of them are structural schematic diagrams of the present utility model.

[0014] Figure 3 It is a partial bottom view schematic diagram of the utility model.

[0015] Figure 4 It is a partial front cross-sectional view of the utility model.

[0016] Among them: bracket 1, dust cover 2, lifting cylinder 3, dust exhaust pipe 4, powerful fan 5, spray mechanism 6, circular spray pipe 61, aerosol nozzle 62, guide rod 7, guide sleeve 8. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0018] See also Figure 1-4A dust removal device used in a converter iron charging process comprises a bracket 1 erected just above a molten iron tank, a dust removal hood 2 opposite to a filling port of the molten iron tank being arranged on the bracket 1, the dust removal hood 2 being lifted up and down by a lifting cylinder 3, a dust removal pipe 4 being connected to the outer side of the dust removal hood 2, a powerful fan 5 being arranged inside the dust removal pipe 4 near one end of the dust removal hood 2, a spray mechanism 6 being arranged inside the one end of the dust removal pipe 4 away from the dust removal hood 2, the lifting cylinder 3 and the spray mechanism 6 being respectively connected to a controller.

[0019] Preferably, there are at least two dust exhaust pipes 4 which are arranged at intervals on the dust exhaust hood 2, and correspondingly, there are two groups of spray mechanisms 6, so that the dust exhaust capability is stronger.

[0020] Preferably, the dust exhaust duct 4 is an inverted L-shaped structure, the powerful fan 5 is arranged on one section of the inverted L-shaped dust exhaust duct 4, and the spray mechanism 6 is arranged on the other section of the inverted L-shape.

[0021] The preferred spray mechanism 6 comprises an annular spray pipe 61 arranged on the dust exhaust pipe 4, a plurality of aerosol nozzles 62 are evenly spaced inside the annular spray pipe 61, and the annular spray pipe 61 is connected to a high-pressure spray gun through a pipeline.

[0022] Preferably, the plurality of aerosol nozzles 62 are all arranged to be inclined toward the side of the powerful blower 5 , so that the contact area between the aerosol sprayed by the aerosol nozzle 62 and the pollutants can be increased.

[0023] Preferably, there are vertically downward guide rods 7 on the brackets 1 on both sides of the lifting cylinder 3. The bottom ends of the two guide rods 7 pass through the brackets 1 and are fixedly connected to the dust hood 2. Guide sleeves 8 are provided on the outer sides of the guide rods 7 on the upper and lower sides of the bracket 1. The setting of the guide rods 7 makes it easier for the dust hood 2 to be more stable during the lifting process of the lifting cylinder 3.

[0024] Preferably, the dust hood 2 is a hemispherical structure, and the diameter of the dust hood 2 is larger than the diameter of the filling port of the molten iron ladle, so that pollutants can better enter the dust hood 2 under the action of the powerful fan 5.

[0025] Working principle: when the converter is charged with iron, the lifting cylinder 3 is controlled to start so that the dust hood 2 is lowered to just above the molten iron tank, and then the powerful fan 5 and the spray mechanism 6 are controlled to start. Under the action of the powerful fan 5, a large amount of pollutants such as oxidized iron scale dust produced by the high-temperature molten iron in the process of charging iron in the converter can pass through the dust exhaust pipe 4. Under the action of the high-pressure spray gun, water is sprayed from the aerosol nozzle 62 to form aerosol water, which then comes into contact with pollutants such as oxidized iron scale dust to condense into small particles and be discharged from the end of the dust exhaust pipe 4, so as to achieve the purpose of controlling the dust from overflowing and affecting the environment. The manufacturing cost of this device is low, there is no safety risk, and it can achieve the purpose of controlling the dust from overflowing and affecting the environment, effectively ensuring the health of converter steelmaking workers.

[0026] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-limiting from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any reference numerals in the claims should not be regarded as limiting the claims involved.

[0027] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A dust removal device used in a converter iron charging process, characterized in that: The invention comprises a support (1) erected just above a molten iron ladle, wherein a dust exhaust hood (2) is provided on the support (1) and is opposite to a filling port of the molten iron ladle, wherein the dust exhaust hood (2) is lifted and lowered by a lifting cylinder (3), wherein a dust exhaust pipe (4) is connected to the outside of the dust exhaust hood (2), wherein a powerful fan (5) is provided inside the dust exhaust pipe (4) at one end close to the dust exhaust hood (2), wherein a spray mechanism (6) is provided inside the end of the dust exhaust pipe (4) away from the dust exhaust hood (2), and wherein the lifting cylinder (3) and the spray mechanism (6) are respectively connected to a controller.

2. A dust removal device for use in a converter iron-adding process according to claim 1, characterized in that: There are at least two dust exhaust pipes (4) which are arranged at intervals on the dust exhaust hood (2), and two groups of corresponding spray mechanisms (6) are also provided.

3. The dust removal device for use in a converter iron-adding process according to claim 1, characterized in that: The dust exhaust pipe (4) is an inverted L-shaped structure, the powerful fan (5) is arranged on one section of the inverted L-shaped dust exhaust pipe (4), and the spray mechanism (6) is arranged on the other section of the inverted L-shaped structure.

4. The dust removal device for use in a converter iron-adding process according to claim 1, characterized in that: The spray mechanism (6) comprises an annular spray pipe (61) arranged on the dust exhaust pipe (4), a plurality of aerosol spray heads (62) are evenly spaced inside the annular spray pipe (61), and the annular spray pipe (61) is connected to a high-pressure spray gun via a pipeline.

5. A dust removal device for use in a converter iron-adding process according to claim 4, characterized in that: The plurality of aerosol spray heads (62) are all arranged to be inclined toward the side of the powerful fan (5).

6. A dust removal device for use in a converter iron-adding process according to claim 1, characterized in that: The brackets (1) on both sides of the lifting cylinder (3) are provided with vertical downward guide rods (7), the bottom ends of the two guide rods (7) pass through the brackets (1) and are fixedly connected to the dust cover (2), and the outer sides of the guide rods (7) on the upper and lower sides of the bracket (1) are provided with guide sleeves (8).

7. The dust removal device for use in a converter iron-adding process according to claim 1, characterized in that: The dust exhaust hood (2) is a hemispherical structure, and the diameter of the dust exhaust hood (2) is larger than the diameter of the filling port of the molten iron tank.

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