A tundish tipping machine dust removal method

Abstract

The application discloses a tilter dust removal device, wherein the support comprises a cross beam and a stand column, a part of the space enclosed by the support is a dust removal chamber, a sealing plate is arranged along the circumferential side of the dust removal chamber, a frame is oppositely fixed to the support, the frame is located at the bottom of the dust removal chamber, the frame is used for mounting the tilter, a dust removal main pipe is located above the support, the dust removal main pipe is provided with a first interface, a second interface and a control valve, a main dust collecting cover and an auxiliary dust collecting cover are movably installed on the two cross beams, in the waiting state, the main dust collecting cover and the auxiliary dust collecting cover are away from the top side of the dust removal chamber, in the working state, the main dust collecting cover and the auxiliary dust collecting cover jointly block the top side of the dust removal chamber, the dust removal branch pipe port of the main dust collecting cover is connected with the first interface, and the dust removal branch pipe port of the auxiliary dust collecting cover is connected with the second interface, a main closing door and an auxiliary closing door are arranged on a wide side and a long side of the dust removal chamber respectively, the main closing door in the open state is used for the entry and exit of a forklift, and the auxiliary closing door in the open state is used for the entry and exit of a flat car.

Description

Technical Field

[0001] This invention relates to the field of tundish technology for continuous casting machines, and more particularly to a dust removal method for a tundish tilting machine. Background Technology

[0002] After continuous casting is completed, some slag and molten steel remain in the tundish, which is called casting residue. This residue needs to be removed using a tilting machine, which generates a large amount of dust during the tilting process. Although most steel plants equip their tundish tilting machines with dust removal devices, the dust removal effect is generally poor, and a large amount of dust still overflows during the tilting process, making it impossible to achieve orderly dust discharge and seriously affecting the physical and mental health of the workers on site. Summary of the Invention

[0003] This application provides a dust removal method for an intermediate bale tilting machine, which solves the technical problem of poor dust removal effect during the intermediate bale tilting process.

[0004] This application provides a dust removal device for an intermediate ladle tilting machine, including a support, a sealing plate, a frame, a dust removal main pipe, a main dust collection hood, a secondary dust collection hood, a main sealing door, and a secondary sealing door. The support includes two relatively parallel crossbeams and multiple columns connected to the crossbeams. A portion of the space enclosed by the support is a dust removal chamber for accommodating the intermediate ladle and the tilting machine. The crossbeams span the dust removal chamber. The sealing plate is connected to the support and arranged along the perimeter of the dust removal chamber. The frame is fixed relative to the support and is located at the bottom of the dust removal chamber. The frame is used to install the tilting machine. The dust removal main pipe is located above the support. The dust removal main pipe has a first interface on the pipe body, a second interface at one end, and a suction fan at the other end. The dust collection main pipe is also equipped with a control valve. Both the main dust collection hood and the auxiliary dust collection hood can be movably installed on two crossbeams. The main dust collection hood and the auxiliary dust collection hood have a waiting state and an operating state. In the waiting state, the main dust collection hood and the auxiliary dust collection hood are located on the left and right sides away from the top of the dust collection chamber. In the operating state, the main dust collection hood and the auxiliary dust collection hood jointly block the top of the dust collection chamber. The dust collection branch pipe of the main dust collection hood is connected to the first interface, and the dust collection branch pipe of the auxiliary dust collection hood is connected to the second interface. The main sealing door and the auxiliary sealing door are respectively located on one wide side and one long side of the dust collection chamber. The main sealing door in the open state is used for the entry and exit of the forklift, and the auxiliary sealing door in the open state is used for the entry and exit of the flatbed truck.

[0005] In some embodiments, the dust removal device for the tundish tilting machine also includes a steel billet, which is fixed relative to the support and arranged along the bottom inner side of the sealing plate.

[0006] In some embodiments, the dust removal device for the tundish tilter also includes refractory bricks arranged along the inside of the sealing plate to insulate the sealing plate.

[0007] In some implementations, the control valve is configured as a butterfly valve, which is electrically driven to enable remote control.

[0008] In some implementations, observation doors that can be opened and closed are provided on both long sides of the dust removal chamber for observing the tundish and the tilting machine.

[0009] In some embodiments, the dust removal device for the tundish tilting machine also includes an operation box, which is fixed relative to the support and located on one side of the observation door. The operation box is used to control the movement of the tilting machine, the moving positions of the main dust collection hood and the auxiliary dust collection hood, and the opening and closing of the control valve.

[0010] In some embodiments, a guide rail is mounted on the crossbeam, and both the main dust collection hood and the auxiliary dust collection hood are mounted on the guide rail via wheel sets. The wheel sets include at least one drive wheel, which is connected to a drive motor via a chain.

[0011] In some implementations, the tilting machine includes an intermediate ladle locking device and a top slag cylinder.

[0012] In some implementations, both the main dust collection hood and the auxiliary dust collection hood are provided with high-temperature resistant sealing plates in their docking areas.

[0013] In some embodiments, the dust removal device for the tundish tilting machine includes a tilting mode, a casting residue discharge mode, and a slag discharge mode. In the tilting mode, the main dust hood and auxiliary dust hood are adjusted to a standby state, clearing the area above the tilting machine. An overhead crane is used to hoist the tundish to be dismantled and place it onto the tilting machine. Then, the main dust hood and auxiliary dust hood are adjusted to the working state, the main and auxiliary sealing doors are closed, the control valve is opened, and the tilting machine is controlled to rotate 180°. Under the action of the top slag cylinder, the casting residue inside the tundish is removed. After the dust in the dust removal chamber is cleared, the main and auxiliary dust hoods are adjusted to a standby state, the main and auxiliary sealing doors are opened, and the control valve is closed. The intermediate ladle is lifted away by an overhead crane. In the case of casting residue discharge, the secondary sealing door is opened, and the flatbed truck is poured into the dust removal chamber. The casting residue under the tilting machine is lifted onto the flatbed truck using casting residue clamps. After the casting residue is lifted, the flatbed truck is driven out. In the case of slag discharge, the main sealing door and the secondary sealing door are opened. The loader enters the dust removal chamber through the main sealing door to collect the slag under the tilting machine. After the bucket is full, the loader is emptied out of the main sealing door and waits. The flatbed truck is poured into the dust removal chamber through the secondary sealing door and waits. The loader empties the slag in the bucket into the flatbed truck bed, and the flatbed truck is driven out through the secondary sealing door. The loader continues to shovel slag and load it onto the truck. This cycle is repeated until all the slag in the dust removal chamber is shoveled out.

[0014] The beneficial effects of this application are as follows: It provides a dust removal device for a tundish tilting machine. The tilting machine is placed in the dust removal chamber of a support frame. The main and auxiliary dust collection hoods can be moved away from their original positions to allow the tundish to be hoisted onto the tilting machine. The main and auxiliary dust collection hoods in this device have waiting and working states, working in conjunction with the main dust collection pipe and a suction fan to perform dust removal. This enables dust removal during the tundish tilting process. The main and auxiliary closed doors facilitate the entry and exit of trolleys and forklifts, providing an equipment foundation for the external discharge of casting residue and slag. The main and auxiliary dust collection hood structure effectively expands the volume of the dust removal chamber, ensuring that dust that cannot be instantly removed remains within the chamber without overflowing. The opening of the main and auxiliary closed doors facilitates the external discharge of casting residue and slag from the dust removal chamber. Therefore, this device effectively avoids the overflow of dust generated during the tilting process, achieving orderly dust discharge and improving the environment of the tundish repair area. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention.

[0016] Figure 1 A schematic diagram of a dust removal device for an intermediate ladle tilting machine in a waiting state, provided in this application;

[0017] Figure 2 This is a schematic diagram of the working state of a dust removal device for an intermediate ladle tilting machine provided in this application.

[0018] Attached diagram labels: 1-Secondary dust collection hood, 2-Support, 3-Intermediate jar, 4-Tilting machine, 5-Sealing plate, 6-Main dust collection hood, 7-Main sealing door, 8-Secondary sealing door, 9-Refractory brick, 10-Control box, 11-Observation door, 12-Frame, 13-Dust collection main pipe, 14-Steel billet, 15-Control valve. Detailed Implementation

[0019] Please refer to Figure 1 and Figure 2 A dust removal device for an intermediate ladle tilting machine is disclosed. Figure 1 The schematic diagram shows the device in standby mode. Figure 2 The schematic diagram shows the device in operation, including the auxiliary dust collection hood 1, bracket 2, sealing plate 5, main dust collection hood 6, main sealing door 7, auxiliary sealing door 8, frame 12, and dust collection main pipe 13.

[0020] Please refer to the reference. Figure 1 and Figure 2The bracket 2, serving as the main mounting frame 12, is primarily used to support the main and auxiliary dust collection hoods and is fixed to the foundation, such as a concrete floor. The bracket 2 includes two relatively parallel crossbeams and multiple uprights connected to the crossbeams. The crossbeams provide the movement path for the main and auxiliary dust collection hoods.

[0021] The support 2 has an enclosed space, such as Figure 1 and Figure 2 As shown, the central part of this space is a dust removal chamber, which is used to house the intermediate ladle 3 and the tilting machine 4, forming a feature where a crossbeam spans across the dust removal chamber. This is due to... Figure 1 During the waiting state, the main and auxiliary dust collection hoods must be moved away from directly above the dust removal chamber.

[0022] The dust collection chamber includes the top side, bottom side, and perimeter side, such as... Figure 1 , Figure 2 In the illustrated scheme, the dust removal chamber is generally rectangular, with its perimeter forming the four sides of the cuboid. Sealing plates 5 are arranged along the perimeter of the dust removal chamber and connected to the support frame 2. After completely enclosing the columns with sealing plates 5, the resulting dust removal chamber prevents smoke and dust from escaping. In some embodiments, the sealing plates 5 are made of iron plates.

[0023] A frame 12 is installed on the bottom side of the dust removal chamber. The frame 12 is fixed relative to the support 2 and is essentially fixed to the foundation, such as a concrete floor. The columns and beams of the support 2 are distributed around the frame 12. The tilting machine 4 is installed through the frame 12, which mainly supports and installs the tilting machine 4.

[0024] The tundish 3 is a container for molten steel. After the continuous casting machine finishes casting, some molten steel and slag will be stored at the bottom, which will form casting residue after solidification. The tundish 3 is installed on the tilting machine 4. The tilting machine 4 is mainly used to tilt the tundish 3. The tilting machine 4 includes a tundish locking device and a top slag cylinder located at the top. After the tilting machine 4 is tilted 180°, the casting residue of the tundish can be dismantled under the action of the top slag cylinder.

[0025] A dust collection main pipe 13 is installed above the support frame 2, and the dust collection main pipe 13 is fixed relative to the support frame 2. A suction fan is connected to one end of the dust collection main pipe 13, which can suck away the smoke and dust generated after the tilting machine 4 tilts the bag during operation. Please refer to the figure. Figure 1 and Figure 2 The dust removal main pipe 13 has a first interface on the pipe body, which is used to connect with the main dust collection hood 6. The dust removal main pipe 13 has a second interface at one end, which is used to connect with the auxiliary dust collection hood 1. The dust removal main pipe 13 is also equipped with a control valve 15, which is installed in the dust removal main pipe 13 at the position equivalent to the main circuit, and plays the role of controlling the opening and closing.

[0026] like Figure 1 and Figure 2 As shown, both the main dust collection hood 6 and the auxiliary dust collection hood 1 are movably mounted on two crossbeams. The movability can be achieved through rack and pinion mechanisms, wheel guides, cylinder rod extension, etc. In some embodiments, guide rails are mounted on the crossbeams, and both the main dust collection hood 6 and the auxiliary dust collection hood 1 are mounted on the guide rails via wheel sets. Each wheel set includes at least one drive wheel, which is connected to a drive motor via a chain. When the motor is running, the main and auxiliary dust collection hoods move along the guide rails on the crossbeams and can stop at a set position.

[0027] Both the main dust collection hood 6 and the auxiliary dust collection hood 1 are equipped with dust collection branch pipes, such as Figure 1 and Figure 2 As shown, the main and auxiliary dust collection hoods can be opened with round and square air intakes on the top side. The air intakes are connected to one end of their respective dust collection pipes, and the other end of the dust collection pipes is used to connect with the interface of the dust collection main pipe 13.

[0028] The main dust collection hood 6 and the auxiliary dust collection hood 1 have waiting and working states. The position of the main and auxiliary dust collection hoods on the crossbeam is controlled to adjust between the waiting and working states. When in such a state... Figure 1 In the waiting state shown, the main dust collection hood 6 and the auxiliary dust collection hood 1 are positioned to the left and right, respectively, away from the top of the dust collection chamber. When in such a waiting state... Figure 2 In the working state shown, the main dust collection hood 6 and the auxiliary dust collection hood 1 jointly seal the top side of the dust removal chamber. The dust removal branch pipe of the main dust collection hood 6 is connected to the first interface, and the dust removal branch pipe of the auxiliary dust collection hood 1 is connected to the second interface.

[0029] Please refer to Figure 1 and Figure 2 The main sealing door 7 is located on one wide side of the dust removal chamber, specifically within the sealing plate 5. The main sealing door 7 is mainly used for the entry and exit of the loader, facilitating the discharge of casting residue and slag inside the tilting machine 4. When closed, it can prevent smoke and dust from overflowing.

[0030] Please refer to Figure 1 and Figure 2 The secondary sealing doors 8 are respectively set on one long side of the dust removal chamber, specifically within the range of the sealing plate 5. The secondary sealing doors 8 are mainly used for the entry and exit of the flatbed cart, facilitating the discharge of casting residue and slag inside the tilting machine 4. When closed, they can prevent smoke and dust from overflowing.

[0031] In some embodiments, the dust removal device for the tundish tilting machine also includes refractory bricks 9, which are arranged along the inner side of the sealing plate 5 to achieve the function of heat insulation of the sealing plate 5 and prevent the sealing plate 5 from deforming due to heat.

[0032] In some embodiments, the dust removal chamber is provided with an openable and closable observation door 11, which is located on both sides of the tilting machine 4, specifically on the two long sides of the dust removal chamber. When the observation door 11 is opened, the status of the intermediate ladle 3 and the tilting machine 4 can be observed, and the daily maintenance of the tilting machine 4 can be facilitated. When the observation door 11 is closed, it can prevent smoke and dust from overflowing.

[0033] In some embodiments, the dust removal device for the tundish tilting machine also includes an operation box 10. The operation box 10 is fixed relative to the support 2. The operation box 10 is mainly used to control the tilting machine 4, the control valve 15, and the main and auxiliary dust collection hoods, specifically controlling the movement of the tilting machine 4, the movement of the main and auxiliary dust collection hoods, and the opening and closing state of the control valve 15. The operation box 10 is located on one side of the observation door 11, close to the observation door 11, to facilitate employees to confirm the status of the tundish 3 before performing the tilting operation.

[0034] The control valve 15 can be a butterfly valve. The butterfly valve is the on / off valve that controls the dust removal main pipe 13. The butterfly valve is electrically driven and can be remotely controlled.

[0035] In some embodiments, the dust removal device of the tundish tilting machine also includes a steel billet 14, which is fixed relative to the support 2. The steel billet 14 is arranged along the bottom inner side of the sealing plate 5, which can protect the sealing plate 5 during the process of the loader shoveling the slag, prevent the moving slag from damaging the sealing plate 5, and prevent the sealing plate 5 from being deformed or damaged by the loader touching the sealing plate 5 during the process of shoveling the slag.

[0036] In some embodiments, both the main dust collection hood 6 and the auxiliary dust collection hood 1 are provided with high-temperature resistant sealing plates 5 in their docking areas to ensure that there are no gaps between the main and auxiliary dust collection hoods during operation.

[0037] Regarding the connection between the dust collection pipe inlet of the main dust collection hood 6 and the first interface, and the connection between the dust collection pipe inlet of the auxiliary dust collection hood 1 and the second interface, the connection between the pipe inlets is as follows: Figure 1 and Figure 2 The corresponding pipes are installed vertically. In some embodiments, the pipe openings are designed as angled openings, which helps to reduce the gaps at the pipe joints.

[0038] The above describes the dust removal device for the tundish tilting machine, including the tilting operation, the casting residue discharge operation, and the slag discharge operation.

[0039] The specific working conditions of the tilting machine 4 are as follows: (1) Controlled by the control box 10, the main dust collection hood 6 and the auxiliary dust collection hood 1 are moved to both sides of the tilting machine 4, i.e., the waiting position, corresponding to the waiting state, and the area above the tilting machine 4 is cleared. (2) Open the observation door 11, use the overhead crane to hoist the intermediate bag 3 to be removed and place it on the tilting machine 4, control the tilting machine 4 locking device to lock the intermediate bag 3, so that the tilting machine 4 is ready to flip the bag. (3) Close the observation door 11. (4) Move the main dust collection hood 6 and the auxiliary dust collection hood 1 to the working position, corresponding to the working state. The contact parts of the main dust collection hood 6 and the auxiliary dust collection hood 1 are equipped with high temperature resistant sealing plates 5, which can ensure that there is no gap between the main dust collection hood 6 and the auxiliary dust collection hood 1. At this time, the dust removal branch pipe ports of the main dust collection hood 6 and the auxiliary dust collection hood 1 are exactly matched with the dust removal main pipe interface. (5) Close the main sealing door 7 and the auxiliary sealing door 8. At this time, the dust removal chamber can be completely sealed. (6) Open the butterfly valve on the dust removal main pipe to create negative pressure in the dust removal chamber. (7) Control the tilting machine 4 to rotate 180° and remove the casting residue in the tundish 3 under the action of the top slag cylinder. (8) Wait a few minutes until the dust in the dust removal chamber is discharged. Then move the main dust collection hood 6 and the auxiliary dust collection hood 1 to the waiting position; open the main sealing door 7 and the auxiliary sealing door 8; close the butterfly valve on the dust removal main pipe 13; open the observation door 11 and use an overhead crane to lift the tundish 3 away. The tundish 3 turning operation is now complete.

[0040] The specific procedures for discharging the casting residue inside the tilting machine 4 are as follows: (1) Open the secondary sealing door 8 and pour the cart into the dust removal chamber. (2) Use casting residue clamps to lift the casting residue from the tilting machine 4 onto the cart. (3) After the casting residue has been lifted, drive the cart out to realize the discharge of the casting residue inside the tilting machine 4.

[0041] The specific conditions for the external discharge of slag inside the tilting machine 4 are as follows: (1) Open the main closed door 7 and the secondary closed door 8. (2) The loader enters the dust removal chamber through the main closed door 7, which can realize the collection and transportation of slag under the tilting machine 4. After the bucket is full, the loader is emptied out of the main closed door 7 and waits. (3) The flatbed truck is poured into the dust removal chamber through the secondary closed door 8 and waits. The loader pours the slag in the bucket into the flatbed truck bed. (4) The flatbed truck is driven out through the secondary closed door 8. The loader continues to shovel slag and then loads it onto the truck. This cycle continues until all the slag in the dust removal chamber is shoveled out, thus realizing the external discharge of slag inside the tilting machine 4.

[0042] In summary, the dust removal device of the tundish tilting machine adopts a main and auxiliary dust collection hood structure, which effectively expands the volume of the dust removal chamber and ensures that the smoke and dust, which cannot be instantly drawn away, can remain in the dust removal chamber without overflowing. The opening of the main and auxiliary closed doors 8 facilitates the discharge of casting residue and slag from the dust removal chamber. It effectively avoids the overflow of smoke and dust generated by the tilting machine 4 during the tundish tilting process, realizes the orderly discharge of smoke and dust, and facilitates the daily cleaning and discharge of slag and other materials, thus improving the environment of the tundish 3 repair area.

[0043] Although preferred embodiments of the invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the invention.

[0044] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A tundish tipping machine dedusting method, characterized by, The application discloses a tilter dust removal device for a tundish. The tilter dust removal device for the tundish comprises: A support comprises two parallel cross beams and a plurality of vertical columns connected with the cross beams, a space enclosed by the support is divided into a dust removal chamber for accommodating the tundish and the tilter, and the cross beams are arranged above the dust removal chamber; A sealing plate is connected with the support and arranged along the periphery of the dust removal chamber; A frame is fixed opposite to the support and arranged at the bottom of the dust removal chamber and used for mounting the tilter; A dust removal main pipe is arranged above the support, the dust removal main pipe is provided with a first interface at the pipe body, a second interface at one end, and the other end is used for connecting an air suction fan, and the dust removal main pipe is further provided with a control valve; A main dust collection cover and a secondary dust collection cover are movably arranged on the two cross beams, have a standby state and a working state, in the standby state, the main dust collection cover and the secondary dust collection cover are arranged left and right away from the top side of the dust removal chamber, and in the working state, the main dust collection cover and the secondary dust collection cover jointly block the top side of the dust removal chamber, the dust removal branch pipe of the main dust collection cover is connected with the first interface, and the dust removal branch pipe of the secondary dust collection cover is connected with the second interface; A main closing door and a secondary closing door are arranged at a wide side and a long side of the dust removal chamber respectively, the main closing door in the open state is used for the entry and exit of a forklift, and the secondary closing door in the open state is used for the entry and exit of a trolley; In the dust removal chamber, observation doors are arranged at the two long sides and can be opened and closed, the observation doors are used for observing the tundish and the tilter, and the tilter dust removal device for the tundish further comprises an operation box, the operation box is fixed opposite to the support, the operation box is arranged at one side of the observation door, and the operation box is used for controlling the movement of the tilter, the moving positions of the main dust collection cover and the secondary dust collection cover, and the opening and closing of the control valve; In the tundish turning condition, the main dust collection cover and the secondary dust collection cover are controlled to the standby state by the operation box, the upper area of the tilter is emptied, the observation door is opened, the tundish to be removed is lifted by a crown block and placed on the tilter, then the observation door is closed, the main dust collection cover and the secondary dust collection cover are controlled to the working state, the main closing door and the secondary closing door are closed, the control valve is opened, the tilter is controlled to turn 180°, the casting residues in the tundish are removed under the action of a top slag cylinder, the main dust collection cover and the secondary dust collection cover are controlled to the standby state after the smoke and dust in the dust removal chamber are exhausted, the main closing door and the secondary closing door are opened, and the control valve is closed, and the tundish is lifted away by the crown block; In the casting residue discharging condition, the secondary closing door is opened, the trolley is poured into the dust removal chamber, the casting residue under the tilter is lifted to the trolley by a casting residue clamp, and the trolley is opened out after the casting residue is lifted. In the slag discharging condition, the main closing door and the auxiliary closing door are opened, the forklift enters the dust removal chamber through the main closing door, collects the slag under the tilting machine, and waits after the bucket is full and the forklift is discharged from the main closing door. The board car is discharged from the auxiliary closing door into the dust removal chamber and waits, the forklift pours the slag in the bucket into the board car, the board car is opened from the auxiliary closing door, the forklift continues to shovel the slag and loads the car, and the cycle is repeated in turn until the slag in the dust removal chamber is completely shovelled.

2. The tundish tipping machine dedusting method according to claim 1, characterized in that, The tundish tilting machine dust removal device further comprises a billet, the billet is fixed opposite to the support, and the billet is arranged along the inner bottom of the sealing plate.

3. The tundish tipping machine dedusting method according to claim 1, characterized in that, The tundish tilting machine dust removal device further comprises a refractory brick, the refractory brick is arranged along the inner side of the sealing plate to heat insulate the sealing plate.

4. The tundish tipping machine dedusting method according to claim 1, characterized in that, The control valve is arranged as a butterfly valve, and the butterfly valve is driven by electricity to realize remote control.

5. The tundish tipping machine dedusting method according to claim 1, characterized in that, A guide rail is mounted on the cross beam, and the main dust collecting cover and the auxiliary dust collecting cover are mounted on the guide rail through a wheel set, the wheel set comprises at least one driving wheel, and the driving wheel is connected with a driving motor through a chain.

6. The tundish tipping machine dedusting method according to claim 1, characterized in that, The tilting machine comprises a tundish locking device and a top slag oil cylinder.

7. The tundish tipping machine dedusting method according to claim 1, characterized in that, The main dust collecting cover and the auxiliary dust collecting cover are provided with high-temperature-resistant sealing plates in the abutting areas.

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