Flue gas collecting device in ferrosilicon molten iron discharging process

Abstract

The utility model discloses a flue gas collecting device in a silicon iron molten iron discharging process, and relates to the technical field of silicon iron molten iron discharging. The device comprises a hopper cover, the top of the hopper cover is connected with a connecting pipe in a penetrating mode, the top end of the connecting pipe is connected with a conical pipe in a penetrating mode, and the top of the conical pipe is provided with a negative pressure assembly used for absorbing smoke in a negative pressure mode. Through the arrangement of the negative pressure assembly, a large amount of smoke can be generated in the discharging process of the ferrosilicon molten iron, the hopper cover can be arranged above the discharging position of the ferrosilicon molten iron, and the driving motor is connected to an external power supply, so that the driving motor drives the impeller to rotate in the negative pressure pipe, and then negative pressure is formed in the negative pressure pipe; meanwhile, the negative-pressure fan is connected to an external power supply, meanwhile, the negative-pressure fan and the suction force of negative pressure in the negative-pressure pipe can absorb smoke generated when the ferrosilicon molten iron is discharged through the hopper cover, the smoke can be intensively absorbed through active absorption of the negative pressure, and the smoke absorption efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the field of ferrosilicon molten iron discharge, specifically, it relates to a flue gas collection device for the ferrosilicon molten iron discharge process. Background Technology

[0002] The development of ferrosilicon submerged arc furnaces has been rapid in recent years. With the increasing emphasis on national environmental protection and energy conservation, high-energy-consuming small furnaces are gradually being phased out of the market, while large furnaces with high efficiency, environmental protection, and energy-saving technologies are constantly emerging. As submerged arc furnaces have evolved from small to large, the amount of ferrosilicon molten iron discharged has also gradually increased, which has indirectly led to an increase in the amount of flue gas during the ferrosilicon molten iron discharge process, requiring the collection of flue gas.

[0003] Chinese Patent Publication No. CN213826347U discloses a flue gas collection device for the discharge process of molten ferrosilicon, comprising: a trolley for co-directional displacement of the molten ferrosilicon ladle and a flue gas collection assembly; the trolley for co-directional displacement of the molten ferrosilicon ladle is capable of moving in the same direction as the molten ferrosilicon ladle; the flue gas collection assembly includes a flue gas collection hood, a flue gas guide fan, and a flue gas collecting hose; the flue gas collection hood is disposed on one side of the trolley for co-directional displacement of the molten ferrosilicon ladle and can cover the top of the molten ferrosilicon ladle; the flue gas guide fan is disposed on the trolley for co-directional displacement of the molten ferrosilicon ladle, and its inlet is connected to the flue gas collection hood; one end of the flue gas collecting hose is connected to the outlet end of the flue gas guide fan. This flue gas collection device for the discharge process of molten ferrosilicon can effectively collect flue gas, and the flue gas generated by the molten ferrosilicon ladle during the ferrosilicon casting process can also be collected.

[0004] When collecting flue gas, the lack of active negative pressure prevents the active absorption of the flue gas, causing some of the flue gas to drift elsewhere, resulting in low flue gas collection efficiency. At the same time, the flue gas needs to be centrally discharged into the flue system during collection, and impurities in the flue gas are discharged along with it, causing some air pollution.

[0005] In view of this, this utility model is hereby proposed. Utility Model Content

[0006] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a flue gas collection device for the discharge process of ferrosilicon molten iron. This solves the problem mentioned in the background art, which is that the lack of a certain active negative pressure makes it impossible to actively absorb the flue gas, resulting in the flue gas drifting to other places and the low efficiency of flue gas collection. At the same time, while collecting the flue gas, it is necessary to centrally discharge the flue gas into the flue system, and the impurities in the flue gas are discharged along with it, which will cause a certain air pollution problem.

[0007] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows:

[0008] A flue gas collection device for the discharge process of ferrosilicon molten iron includes: a bucket hood, a connecting pipe extending through the top of the bucket hood, a conical pipe extending through the top of the connecting pipe, a negative pressure component for negative pressure absorption of flue gas being provided at the top of the conical pipe, a through hole being provided on one side of the negative pressure component, a short pipe extending through the inside of the through hole, and a purification component for filtering impurities inside the flue gas extending through one end of the short pipe.

[0009] Optionally, the negative pressure assembly includes a negative pressure pipe disposed at the top of the conical tube, a drive motor is fixedly connected to the top of the negative pressure pipe, and an impeller is fixedly connected to the output end of the drive motor through the interior of the negative pressure pipe.

[0010] Optionally, the purification component includes a purification tube that extends through and connects to one end of the short tube. The surface of the purification tube has several slots that are equidistantly spaced from left to right. Insert plates are inserted into the slots, and filter cotton for filtering impurities inside the flue gas is provided inside the insert plates.

[0011] Optionally, the surface of the insert plate is provided with a threaded hole, and a threaded bolt for fixing is provided inside the threaded hole.

[0012] Optionally, one end of the purification pipe is connected to a flue pipe, and one end of the flue pipe communicates with the flue pipe.

[0013] Optionally, a negative pressure fan for further improving the negative pressure capacity is provided inside the top of the tapered tube, and a filter screen is provided on the bottom side of the negative pressure fan.

[0014] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art. Of course, any product implementing the present invention does not necessarily need to achieve all of the following advantages at the same time:

[0015] 1. By setting up negative pressure components and purification components, a large amount of flue gas is generated during the discharge of molten ferrosilicon. The bucket hood can be placed above the discharge point of the molten ferrosilicon, and the drive motor can be connected to an external power source. The drive motor drives the impeller to rotate inside the negative pressure pipe, thereby creating a negative pressure inside the negative pressure pipe. At the same time, the negative pressure fan is connected to an external power source. The suction force of the negative pressure fan and the negative pressure inside the negative pressure pipe can absorb the flue gas generated during the discharge of molten ferrosilicon through the bucket hood. The active absorption of the negative pressure can concentrate the absorption of the flue gas, improve the efficiency of flue gas absorption, and prevent the flue gas from drifting elsewhere. At the same time, the absorbed flue gas will be transported from the short pipe to the inside of the purification pipe. After being purified by layers of filter cotton inside the purification pipe, impurities in the flue gas can be filtered out, thereby reducing the harm to the air. At the same time, the staff can periodically disassemble the insert plate by unscrewing the threaded bolts and replace and clean the filter cotton, thereby improving the convenience of maintenance.

[0016] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0017] The accompanying drawings described below are merely some embodiments. Those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0018] In the picture:

[0019] Figure 1 This is a schematic diagram of the overall structure;

[0020] Figure 2 This is a schematic diagram of a tapered tube structure;

[0021] Figure 3 This is a schematic diagram of the purification component structure;

[0022] Figure 4 This is a schematic diagram of the negative pressure component structure.

[0023] The attached diagram lists the components represented by each number as follows:

[0024] 1. Casing; 2. Connecting pipe; 3. Conical pipe; 4. Negative pressure assembly; 41. Negative pressure pipe; 42. Drive motor; 43. Impeller; 5. Through hole; 6. Short pipe; 7. Purification assembly; 71. Purification pipe; 72. Slot; 73. Insert plate; 74. Filter cotton; 75. Threaded hole; 76. Threaded bolt; 8. Flue; 9. Negative pressure fan; 10. Filter screen.

[0025] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings.

[0027] Please see Figure 1-4As shown, this embodiment provides a flue gas collection device for the discharge process of ferrosilicon molten iron, including: a bucket hood 1, a connecting pipe 2 penetrating the top of the bucket hood 1, a conical pipe 3 penetrating the top of the connecting pipe 2, and a negative pressure component 4 for negative pressure absorption of flue gas provided at the top of the conical pipe 3. The discharge process of ferrosilicon molten iron generates a large amount of flue gas. The bucket hood 1 can be placed above the discharge point of the ferrosilicon molten iron, and a drive motor 42 can be connected to an external power source, so that the drive motor 42 drives the impeller 43 inside the negative pressure pipe 41. Rotation creates negative pressure inside the negative pressure pipe 41. Simultaneously, the negative pressure fan 9 is connected to an external power source. The suction force of the negative pressure fan 9 and the negative pressure inside the negative pressure pipe 41 can absorb the flue gas generated when the molten ferrosilicon is discharged through the hood 1. The active absorption of the negative pressure can concentrate the absorption of the flue gas and improve the efficiency of flue gas absorption. A through hole 5 is opened on one side of the negative pressure component 4. A short pipe 6 is connected through the through hole 5. One end of the short pipe 6 is connected through a purification component 7 for filtering impurities inside the flue gas.

[0028] One application of this embodiment is as follows: Flue gas is absorbed and transported from the short pipe 6 to the interior of the purification pipe 71. After being purified by layers of filter cotton 74 inside the purification pipe 71, impurities in the flue gas are filtered out, thereby reducing air pollution. Simultaneously, workers can periodically disassemble the insert plate 73 by tightening the threaded bolt 76 and replace or clean the filter cotton 74, thus improving maintenance convenience. It should be noted that all electrical equipment involved in this application can be powered by a battery or an external power source.

[0029] like Figure 1 As shown, in this embodiment, one end of the purification pipe 71 is connected to the flue pipe 8, and one end of the flue pipe 8 is connected to the flue pipe. The flue pipe 8 is designed so that the purified and filtered flue gas can be discharged into the external flue pipe.

[0030] like Figure 2 As shown, the tapered tube 3 of this embodiment is provided with a negative pressure fan 9 inside the top end for further improving the negative pressure capacity, and a filter screen 10 is provided on the bottom side of the negative pressure fan 9. The negative pressure fan 9 can further improve the efficiency of flue gas collection by absorbing flue gas under negative pressure.

[0031] Example 1:

[0032] In this embodiment, as Figure 3As shown, the purification component 7 includes a purification pipe 71 that is connected to one end of the short pipe 6. The surface of the purification pipe 71 has several slots 72 that are equally spaced from left to right. Insert plates 73 are inserted into the slots 72. Filter cotton 74 for filtering impurities inside the flue gas is provided inside the insert plates 73. Threaded holes 75 are provided on the surface of the insert plates 73. Threaded bolts 76 for fixing are provided inside the threaded holes 75. A large amount of flue gas is generated during the discharge of molten ferrosilicon. The bucket hood 1 can be placed above the discharge point of the molten ferrosilicon, and the drive motor 42 can be connected to an external power source. This causes the drive motor 42 to drive the impeller 43 to rotate inside the negative pressure pipe 41, thereby creating a negative pressure inside the negative pressure pipe 41. At the same time, the negative pressure fan 9 is connected to an external power source. The suction force of the negative pressure fan 9 and the negative pressure inside the negative pressure pipe 41 can absorb the flue gas generated during the discharge of molten ferrosilicon through the bucket hood 1. The active absorption of the negative pressure can concentrate the absorption of the flue gas, improve the efficiency of flue gas absorption, and prevent the flue gas from drifting elsewhere.

[0033] Example 2:

[0034] In this embodiment, as Figure 4 As shown, the negative pressure assembly 4 includes a negative pressure pipe 41 located at the top of the conical pipe 3. A drive motor 42 is fixedly connected to the top of the negative pressure pipe 41. An impeller 43 is fixedly connected to the output end of the drive motor 42 through the inside of the negative pressure pipe 41. The flue gas is absorbed and transported from the short pipe 6 to the inside of the purification pipe 71. After being purified and filtered by layers of filter cotton 74 inside the purification pipe 71, impurities in the flue gas can be filtered out, thereby reducing the harm to the air. At the same time, the staff can periodically disassemble the insert plate 73 by turning the threaded bolt 76 and replace and clean the filter cotton 74, thereby improving the convenience of maintenance.

[0035] This utility model is not limited to the above-described embodiments. Anyone should know that structural changes made under the guidance of this utility model, and any technical solutions that are the same as or similar to this utility model, fall within the protection scope of this utility model. Technical aspects, shapes, and structures not described in detail in this utility model are all publicly known technologies.

Claims

1. A flue gas collection device for the discharge process of molten ferrosilicon, characterized in that, include: A bucket cover (1) is provided with a connecting pipe (2) through the top of the bucket cover (1). A tapered pipe (3) is through the top of the connecting pipe (2). A negative pressure component (4) for absorbing flue gas is provided at the top of the tapered pipe (3). A through hole (5) is provided on one side of the negative pressure component (4). A short pipe (6) is through the inside of the through hole (5). A purification component (7) for filtering impurities inside the flue gas is through one end of the short pipe (6).

2. The flue gas collection device for the molten ferrosilicon discharge process according to claim 1, characterized in that, The negative pressure assembly (4) includes a negative pressure pipe (41) disposed at the top of the tapered tube (3), a drive motor (42) is fixedly connected to the top of the negative pressure pipe (41), and an impeller (43) is fixedly connected to the output end of the drive motor (42) through the interior of the negative pressure pipe (41).

3. The flue gas collection device for the molten ferrosilicon discharge process according to claim 1, characterized in that, The purification component (7) includes a purification tube (71) that is connected to one end of a short tube (6). The surface of the purification tube (71) is provided with a plurality of slots (72) at equal intervals from left to right. A plate (73) is inserted into the slot (72). The plate (73) is provided with filter cotton (74) for filtering impurities inside the flue gas.

4. The flue gas collection device for the molten ferrosilicon discharge process according to claim 3, characterized in that, The insert plate (73) has a threaded hole (75) on its surface, and a threaded bolt (76) for fixing is provided inside the threaded hole (75).

5. A flue gas collection device for the discharge process of ferrosilicon molten iron according to claim 3, characterized in that, One end of the purification pipe (71) is connected to the flue pipe (8), and one end of the flue pipe (8) is connected to the flue pipe.

6. The flue gas collection device for the molten ferrosilicon discharge process according to claim 1, characterized in that, The top of the tapered tube (3) is equipped with a negative pressure fan (9) for further improving the negative pressure capacity, and a filter screen (10) is provided on the bottom side of the negative pressure fan (9).

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