Movable refining dust removal device

Abstract

The utility model relates to the technical field of smelting equipment, and provides a movable refining dust removal device which comprises a first dust suction hood track, a first track support, a second track support, a second dust suction hood track, a dust suction hood and a walking mechanism. The second dust suction hood track is fixed to the top of the second track support, the second dust suction hood track and the first dust suction hood track are both in a horizontal state and are parallel to each other, and the walking mechanism is installed at the bottom of the dust suction hood and used for enabling the dust suction hood to move along the first dust suction hood track and / or the second dust suction hood track. The dust collection cover can move along the first dust collection cover rail and the second dust collection cover rail through the walking mechanism and is located at different positions of the first dust collection cover rail and the second dust collection cover rail so as to meet different position requirements for smoke absorption, graphite electrode replacement and overhaul and maintenance, and later equipment overhaul and maintenance are prevented from being affected.

Description

Technical Field

[0001] The utility model relates to the technical field of smelting equipment, in particular to a movable refining dust removal device. Background Art

[0002] Steel mill tank dumping station dust removal and RH furnace, LF furnace dust removal usually share a set of pulse bag dust removal system, its processing capacity can reach 840000m 3 / h air volume, which acts on the two pits of the tank pouring station, the converter ferroalloy charging point, the RH furnace station, the LF furnace station and the LF furnace charging point, among which the LF furnace is a ladle refining furnace and the RH furnace is a vacuum furnace.

[0003] According to the pipeline layout, the dust removal of the LF furnace station is the most unfavorable point of the pulse bag dust removal system. The imbalance rate between its pipeline and the dust removal pipeline of the tank dumping station is about 75%. When the system is running, the phenomenon of wind grabbing at the tank dumping station is quite serious, resulting in the actual air volume of the LF furnace station far less than the designed air volume of 65000m 3 / h, and because the dust collection and capture at the LF furnace station adopts the side suction method, and in order to ensure the normal lifting of the LF furnace cover, the exhaust port of the furnace cover and the dust removal exhaust pipe are disconnected, the alignment is not accurate, the gap is large, and there are many cases of wild wind. When the electrode is energized for 3-5 minutes before the foam slag is formed in the ladle, a large amount of yellow smoke will be emitted directly into the air from the electrode hole of the furnace cover. The yellow smoke phenomenon above the LF furnace and on the roof of the factory building is relatively serious, causing the dust in the LF furnace area and the environment outside the factory building to exceed the standard, and it cannot meet the ultra-low emission requirements. Utility Model Content

[0004] The problem solved by the utility model is: how to improve the dust emission of a ladle refining furnace.

[0005] In order to solve the above problems, the utility model provides a movable refining dust removal device, which is installed on the refining furnace platform and is suitable for absorbing the flue gas generated by the ladle refining furnace. It includes a first dust hood track, a first track bracket, a second track bracket, a second dust hood track, a dust hood and a walking mechanism. The first dust hood track is fixed to the top of the first track bracket, the second dust hood track is fixed to the top of the second track bracket, the second dust hood track and the first dust hood track are both horizontal and parallel to each other, the walking mechanism is installed at the bottom of the dust hood, and the walking mechanism is used to make the dust hood move linearly along the first dust hood track and / or the second dust hood track.

[0006] Optionally, the width of the dust hood is adapted to the distance between the first dust hood track and the second dust hood track.

[0007] Optionally, the height of the first track bracket is greater than the height of the second track bracket, so as to form a height difference between the first dust hood track and the second dust hood track.

[0008] Optionally, the dust hood includes a first mounting section and a second mounting section, there is a height difference between the first mounting section and the second mounting section, the height difference between the second mounting section and the first mounting section is adapted to the height difference between the first dust hood track and the second dust hood track, so as to enable the dust hood to move in a straight line along the first dust hood track and / or the second dust hood track in a horizontal state; the walking mechanism is installed at the bottom of the first mounting section and / or the second mounting section.

[0009] Optionally, the walking mechanism includes a driving walking wheel and a driven walking wheel, and the driving walking wheel and the driven walking wheel are installed at the bottom of the first mounting section and / or the second mounting section; the driving walking wheel and the driven walking wheel are used to move in a straight line along the first dust hood track and / or the second dust hood track.

[0010] Optionally, the active walking wheel is communicatively connected to an external control device via wireless and / or wired means, and the control device is used to send a working instruction to the active walking wheel.

[0011] Optionally, a pipe interface is provided on the top of the dust hood, and the pipe interface is used to connect a negative pressure pipeline of a pulse bag dust removal system.

[0012] Optionally, the length and width of the dust hood are both greater than the length and width of the ladle refining furnace.

[0013] Optionally, reinforcing ribs are provided between the first track bracket and the first dust hood track, and between the second track bracket and the second dust hood track.

[0014] Optionally, openings are provided on both sides of the dust hood.

[0015] Compared with the prior art, the movable refining dust removal device of the utility model has the following beneficial effects:

[0016] By providing a traveling mechanism, a first dust hood track and a second dust hood track, the traveling mechanism can drive the dust hood to move along the first dust hood track and the second dust hood track, so that the dust hood can be located at different positions on the first dust hood track and the second dust hood track. For example, the dust hood can be moved to a position for absorbing flue gas, or the dust hood can be moved to a position that does not affect the replacement of graphite electrodes or equipment maintenance, thereby improving the dust emission of the ladle refining furnace and further adapting to the needs of absorbing flue gas, replacing graphite electrodes and overhaul and maintenance, so as to avoid affecting the overhaul and maintenance of later equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of a movable refining and dust removal device in an embodiment of the utility model;

[0018] Figure 2 It is a side view of the dust hood in the embodiment of the utility model;

[0019] Figure 3 This is a schematic diagram of the state in which the dust hood absorbs smoke in an embodiment of the utility model;

[0020] Figure 4 This is a schematic diagram of the state of replacing the graphite electrode in the embodiment of the utility model;

[0021] Figure 5 This is a schematic diagram of the state of equipment maintenance in the embodiment of the utility model;

[0022] Description of reference numerals:

[0023] 1. Second track bracket; 2. Second dust hood track; 3. Travel mechanism; 31. Active travel wheel; 32. Driven travel wheel; 4. First track bracket; 5. First dust hood track; 6. Reinforcing ribs; 7. Dust hood; 71. First installation section; 72. Second installation section; 11. Ladle refining furnace; 12. Water-cooled furnace cover; 13. Graphite electrode; 14. Conductive cross arm; 15. Water-cooled cable; 16. Refining furnace platform. DETAILED DESCRIPTION

[0024] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0025] It should be noted that the terms "first", "second", etc. in the specification and claims of the present utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the utility model described herein can be implemented in an order other than those illustrated or described herein.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] In the description of this specification, the description with reference to the terms "embodiment", "one embodiment" and "one implementation" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or implementation are included in at least one embodiment or implementation of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or implementation. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or implementations in a suitable manner.

[0028] like Figure 1 and Figure 3 As shown, an embodiment of the utility model provides a movable refining dust removal device, which is installed on a refining furnace platform 16. The movable refining dust removal device includes a first dust hood track 5, a first track bracket 4, a second track bracket 1, a second dust hood track 2, a dust hood 7 and a walking mechanism 3. The first dust hood track 5 is fixed to the top of the first track bracket 4, the second dust hood track 2 is fixed to the top of the second track bracket 1, the second dust hood track 2 and the first dust hood track 5 are both horizontal and parallel to each other, the walking mechanism 3 is installed at the bottom of the dust hood 7, and the walking mechanism 3 is used to move the dust hood 7 along the first dust hood track 5 and / or the second dust hood track 2.

[0029] It should be noted that Figure 1 and Figure 2 In the XYZ coordinate system shown in , the positive direction of the X axis represents the right, the negative direction of the X axis represents the left, the positive direction of the Z axis represents the top, the negative direction of the Z axis represents the bottom, the positive direction of the Y axis represents the back, and the direction of the Y axis represents the front.

[0030] In the present embodiment, multiple first track brackets 4 and multiple second track brackets 1 are provided, and multiple first track brackets 4 are commonly fixed to the bottom of the first dust hood track 5 and are vertically arranged to the first dust hood track 5. Similarly, multiple second track brackets 1 are commonly fixed to the bottom of the second dust hood track 2 and are vertically arranged to the second dust hood track 2.

[0031] Furthermore, reinforcing ribs 6 are provided between the first track bracket 4 and the first dust hood track 5 , and between the second track bracket 1 and the second dust hood track 2 .

[0032] A stable triangular structure is formed by setting the reinforcing ribs 6 between the first track bracket 4, the first dust hood track 5 and the reinforcing ribs 6 or between the second track bracket 1, the second dust hood track 2 and the reinforcing ribs 6 to improve the bearing capacity of the first dust hood track 5 and the second dust hood track 2. Generally, the dust hood 7 is made of steel and is heavy. Therefore, the use of the reinforcing ribs 6 can effectively improve the stability of the device.

[0033] It should be noted that the width of the dust hood 7 is adapted to the distance between the first dust hood track 5 and the second dust hood track 2 .

[0034] Since the second track bracket 1 and the first track bracket 4 are distributed in the front-to-back direction, there is a horizontal spacing between the first dust hood track 5 and the second dust hood track 2, and the width of the dust hood 7 is adapted to the spacing, so that the dust hood 7 can be installed above the first dust hood track 5 and the second dust hood track 2, and move along the first dust hood track 5 and the second dust hood track 2.

[0035] Furthermore, the height of the first track bracket 4 is greater than the height of the second track bracket 1, so that a height difference is formed between the first dust hood track 5 and the second dust hood track 2. Figure 5 As shown, in this embodiment, the height of the first rail bracket 4 is Figure 1 The positive direction of the Z axis is indicated. It should be noted that since the refining furnace platform 16 usually also has components such as the conductive cross arm 14 and the water-cooling cable 15, which are necessary components in the smelting process, the first track bracket 4 and the second track bracket 1 form a height difference between the first dust hood track 5 and the second dust hood track 2 and install them on the refining furnace platform 16, so that the dust hood 7 will not have motion interaction with other equipment during the movement. For example, in the process of moving to the left, there will be no motion interaction with the conductive cross arm 14 and the water-cooling cable 15, so that the dust hood 17 can move to the far left. It should be further noted that both sides of the dust hood 7 are provided with openings. The purpose is to further avoid interference with the water-cooling cable 15 and the conductive cross arm 14 or other components in the smelting process when the dust hood 7 moves along the first dust hood track 5 and the second dust hood track 2. By setting an opening, the conductive cross arm 14 or the water-cooling cable 15 can extend into the dust hood 7, thereby preventing the dust hood 7 from being unable to move to the ends of the first dust hood track 5 and the second dust hood track 2, thereby ensuring that the dust hood 7 can move freely within the travel range of the first dust hood track 5 and the second dust hood track 2.

[0036] like Figure 3 As shown, Figure 3The schematic diagram of the dust removal state of the dust hood 7 during the production process of the ladle refining furnace 11 is shown by way of example; it is usually necessary to set a negative pressure device on the top of the dust hood 7 to generate negative pressure so that the flue gas generated during the production process of the ladle refining furnace 11 can be absorbed. By way of example, the top of the dust hood 7 has a pipe interface, and the pipe interface is used to connect the negative pressure pipeline of the pulse bag dust removal system; the pulse bag dust removal system generally includes a pulse bag dust collector and a negative pressure pipeline, and negative pressure is generated by the pulse bag dust collector, and the flue gas is adsorbed by the negative pressure pipeline and filtered through the bags in the pulse bag dust collector before being discharged into the atmosphere. This is a prior art and will not be described in detail here.

[0037] It should be noted that, in this embodiment, the length and width of the dust hood 7 are greater than the length and width of the ladle refining furnace. Figure 1 The positive direction of the X axis indicates that the width of the dust cover 7 is Figure 2 Furthermore, the negative pressure pipeline of the pulse bag dust removal system is used to completely cover the flue gas generated during the smelting process of the ladle refining furnace 11 with the dust hood 7, and the flue gas is directed to the pulse bag dust removal system through the negative pressure pipeline, thereby avoiding the overflow of flue gas during the smelting process and reducing environmental pollution.

[0038] See also Figure 3 In this embodiment, the first track bracket 4 and the second track bracket 1 are both fixed on the refining furnace platform 16. Before normal smelting, first, the dust hood 7 is moved to the position directly above the graphite electrode 13, and then the ladle refining furnace 11 filled with molten steel is moved to the bottom of the water-cooled furnace cover 12, and then the water-cooled furnace cover 12 is lowered to the ladle mouth of the ladle refining furnace 11, and the graphite electrode 13 mounted on the conductive cross arm 14 is lowered until the molten steel starts arcing to start normal production. The flue gas rising from the position directly above the graphite electrode 13 is all captured by the dust hood 7, and is absorbed and processed by the pulse bag dust removal system before being discharged, so as to achieve the adsorption of the flue gas generated during smelting and avoid the pollution of the working environment caused by the overflow of the flue gas generated during the smelting process.

[0039] For example, Figure 4 As shown, when the graphite electrode 13 is replaced in the refining furnace, the dust hood 7 is first driven by the walking mechanism 3 to move along the first dust hood track 5 and the second dust hood track 2 to the leftmost side to expose the position of the graphite electrode 13. The graphite electrode 13 can be directly replaced by a crane or a cantilever crane, which is convenient for replacement.

[0040] like Figure 5As shown, when large equipment such as the water-cooling cable 15 and the conductive cross arm 14 need to be inspected and maintained, the dust hood 7 is driven by the walking mechanism 3 to move along the first dust hood track 5 and the second dust hood track 2 to the far right, exposing the position of large equipment such as the water-cooling cable 15 and the conductive cross arm 14. Similarly, the water-cooling cable 15 and the conductive cross arm 14 can be directly inspected and maintained by using a crane or a cantilever crane.

[0041] Combination Figure 2 As shown, the dust hood 7 includes a first mounting section 71 and a second mounting section 72, and there is a height difference between the first mounting section 71 and the second mounting section 72. The height difference between the second mounting section 72 and the first mounting section 71 is adapted to the height difference between the first dust hood track 5 and the second dust hood track 2, so that the dust hood 7 can move in a horizontal state along the first dust hood track 5 and / or the second dust hood track 2; the walking mechanism 3 is installed at the bottom of the first mounting section 71 and / or the second mounting section 72.

[0042] Due to the height difference between the first dust hood track 5 and the second dust hood track 2, the dust hood 7 can be installed on the first dust hood track 5 and the second dust hood track 2 in a horizontal posture through the height difference between the first mounting section 71 and the second mounting section 72.

[0043] It should be noted that since the negative pressure pipe of the pulse bag dust removal system is directly connected to the top pipe interface of the dust hood 7, the flue gas generated during the smelting process of the ladle refining furnace can enter the dust hood 7 and then enter the negative pressure pipe through the principle of flow from the high-pressure area to the low-pressure area. The dust hood 7 is arranged horizontally, so that the negative pressure pipe and the ladle refining furnace are in a vertical corresponding state, thereby maximizing the absorption rate of the flue gas.

[0044] It should be further explained that the walking mechanism 3 can be installed on the first mounting section 71 or the second mounting section 72, and of course can also be installed on the first mounting section 71 and the second mounting section 72 at the same time. When the walking mechanism 3 is installed on the first mounting section 71 or the second mounting section 72, the first mounting section 71 or the second mounting section 72 without the walking mechanism 3 can be slidably installed on the corresponding first dust hood track 5 or the second dust hood track 2. Exemplarily, the walking mechanism 3 is installed on the first mounting section 71, and the second mounting section 72 can be installed on the first dust hood track 5 through moving parts, such as walking wheels, balls, etc., so that the dust hood 7 can move along the first dust removal track 5 and the second dust removal track 2 under the drive of the walking mechanism 3.

[0045] Preferably, the walking mechanism 3 includes a driving walking wheel 31 and a driven walking wheel 32, and the driving walking wheel 31 and the driven walking wheel 32 are installed at the bottom of the first mounting section 71 and / or the second mounting section 72; the driving walking wheel 31 and the driven walking wheel 32 are used to move along the first dust hood track 5 and / or the second dust hood track 2.

[0046] In this embodiment, the active walking wheel 31 and the driven walking wheel 32 are installed on the first installation section 71 as an example. The active walking wheel 31 is installed at one end of the first installation section 71, and the driven walking wheel 32 is installed at the other end of the first installation section 71. It should be noted that the active walking wheel 31 and the driven walking wheel 32 are installed at the relatively far ends of the first installation section 71, so as to keep the dust hood 7 stable during movement.

[0047] Preferably, the active walking wheel 31 includes a wheel group and a driving motor for driving the wheel group to move, and the wheel group can move along the second dust hood track 2. The driving motor drives the wheel group to move, so that the dust hood 7 can move along the first dust removal track 5 and the second dust hood track 2. It should be noted that a wireless or wired communication module can be integrated in the control box of the drive motor to control the operation of the drive motor. Specifically, the active walking wheel 31 is used to communicate with an external control device in a wireless and / or wired manner, and the control device is used to send a working instruction to the active walking wheel 31, for example, sending a rotation direction instruction to the drive motor to make the main shaft of the drive motor rotate clockwise or counterclockwise, and for example, sending a main shaft rotation speed instruction to the drive motor or sending a main shaft brake instruction to the drive motor, so that the drive motor executes a main shaft speed adjustment or a main shaft brake instruction.

[0048] Specifically, by controlling the rotation direction of the driving motor, the active walking wheel 31 moves in one direction, thereby cooperating with the driven walking wheel 32 to move the dust hood 7 in that direction. The movement speed of the dust hood 7 can be adjusted by controlling the rotation speed of the main shaft of the driving motor, and when the main shaft of the driving motor stops, the active walking wheel 31 is located at a position between the first dust hood track 5 and the second dust hood track 2, thereby stopping the dust hood 7 on the first dust hood track 5 and the second dust hood track 2.

[0049] Although the utility model is disclosed as above, the protection scope of the utility model is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the utility model, and these changes and modifications will fall within the protection scope of the utility model.

Claims

1. A movable refining dust removal device, characterized in that: Installed on a refining furnace platform, the movable refining dust removal device comprises a first dust hood track (5), a first track bracket (4), a second track bracket (1), a second dust hood track (2), a dust hood (7) and a walking mechanism (3), wherein the first dust hood track (5) is fixed to the top of the first track bracket (4), the second dust hood track (2) is fixed to the top of the second track bracket (1), the second dust hood track (2) and the first dust hood track (5) are both in a horizontal state and parallel to each other, and the walking mechanism (3) is installed at the bottom of the dust hood (7), and the walking mechanism (3) is used to move the dust hood (7) along the first dust hood track (5) and / or the second dust hood track (2).

2. The movable refining dust removal device according to claim 1 is characterized in that: The width of the dust hood (7) is adapted to the distance between the first dust hood track (5) and the second dust hood track (2).

3. The movable refining and dust removal device according to claim 1 is characterized in that: The height of the first track bracket (4) is greater than the height of the second track bracket (1), so that a height difference is formed between the first dust hood track (5) and the second dust hood track (2).

4. The movable refining and dust removal device according to claim 3 is characterized in that: The dust hood (7) comprises a first mounting section (71) and a second mounting section (72); there is a height difference between the first mounting section (71) and the second mounting section (72); the height difference between the second mounting section (72) and the first mounting section (71) is matched with the height difference between the first dust hood track (5) and the second dust hood track (2), so that the dust hood (7) moves in a horizontal state along the first dust hood track (5) and / or the second dust hood track (2); the walking mechanism (3) is installed at the bottom of the first mounting section (71) and / or the second mounting section (72).

5. The movable refining and dust removal device according to claim 4 is characterized in that: The walking mechanism (3) comprises a driving walking wheel (31) and a driven walking wheel (32), wherein the driving walking wheel (31) and the driven walking wheel (32) are mounted at the bottom of the first mounting section (71) and / or the second mounting section (72); the driving walking wheel (31) and the driven walking wheel (32) are used to move along the first dust hood track (5) and / or the second dust hood track (2).

6. The movable refining and dust removal device according to claim 5, characterized in that: The active running wheel (31) is used for communicating with an external control device in a wireless and / or wired manner, and the control device is used for sending a working instruction to the active running wheel (31).

7. The movable refining and dust removal device according to claim 6 is characterized in that: The top of the dust hood (7) is provided with a pipe interface, and the pipe interface is used to connect the negative pressure pipeline of the pulse bag dust removal system.

8. The movable refining and dust removal device according to any one of claims 1 to 7, characterized in that: The length and width of the dust hood (7) are both greater than the length and width of the refining furnace.

9. The movable refining and dust removal device according to claim 8, characterized in that: Reinforcing ribs (6) are provided between the first track bracket (4) and the first dust hood track (5), and between the second track bracket (1) and the second dust hood track (2).

10. The movable refining and dust removal device according to claim 8, characterized in that: Both sides of the dust collecting hood (7) are provided with openings.

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