Ladle casting residue tipping dust removal device

Abstract

The utility model provides a steel ladle casting residue tipping dust removal device, which comprises a steel ladle tipping mechanism, a plurality of retaining walls, a movable cover car, a fixed air pipe, a fan and an exhaust funnel, the retaining walls are enclosed to form a tipping area for accommodating a slag pot, a track is arranged at the top of each retaining wall, the bottom of the movable cover car is connected to the track in a sliding manner, and the fixed air pipe is arranged on the movable cover car. The top of the movable cover car is in sliding connection with the fixed air pipe, the steel ladle tipping mechanism is located above the tipping area and located on the outer side of the movable cover car, a slag pouring opening for a steel ladle opening to stretch into and tip over is formed in one side face of the movable cover car, the exhaust funnel is communicated with the fixed air pipe, and the draught fan is used for conducting negative pressure air draft on the fixed air pipe. The casting slag pouring device is simple in structure, reasonable in arrangement and flexible to operate, casting slag can be effectively prevented from being splashed around during slag pouring through the arrangement of the tipping area, waste slag collection and internal cleaning are facilitated, the movable cover car is arranged above the retaining wall, maintenance and overhaul are convenient, and the movable cover car can be effectively prevented from being damaged by high-temperature slag.

Description

Technical Field

[0001] The utility model belongs to the technical field of industrial ventilation and dust removal, and in particular relates to a ladle casting slag tilting and dust removal device. Background Art

[0002] During the steelmaking process, the ladle must be tilted to remove the residual slag after casting, and can only be turned over for recycling after hot repair. The residual slag is a mixture of steel slag left after continuous casting or ingot casting of molten steel in the ladle. It is inevitable in the steelmaking process. The slag-steel ratio in the liquid ladle is usually 3%, that is, the residual slag is about 30kg / t steel. Assuming that the ladle capacity is 120t, the amount of liquid residual slag is about 3.6t. For the residual slag, the domestic method generally adopts the method of pouring the residual slag in the ladle into the ground slag tank, and then transporting the slag tank containing the residual slag to the slag treatment workshop for the next step of treatment.

[0003] At present, as the environmental protection requirements of the steel industry are becoming more and more stringent, all enterprises attach great importance to flue gas treatment and emission. When the ladle is pouring slag, a large amount of high-temperature flue gas and dust will inevitably be generated. These pollutants will float in the factory and have a serious impact on the surrounding environment and personnel health. Therefore, it is necessary to develop a new type of dust removal device to solve these problems. Utility Model Content

[0004] The utility model aims to provide a ladle casting slag tilting and dust removal device, which can at least solve some defects existing in the prior art.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A device for tilting and dust removing residual slag from casting of a ladle, comprising a ladle tilting mechanism, a retaining wall, a mobile cover car, a fixed air duct, a fan and an exhaust chimney, the retaining wall having a plurality of blocks, enclosing a tilting area for accommodating a slag pot, tracks are provided on the tops of two relatively arranged retaining walls, the mobile cover car covers the tilting area, and the bottom of the mobile cover car is slidably connected to the tracks of the retaining wall, the top of the mobile cover car is slidably connected to the fixed air duct, the mobile cover car moves back and forth between its working position and standby position, the ladle tilting mechanism is located above the tilting area and on the outside of the mobile cover car, a slag discharge port for the ladle mouth to extend into for tilting is provided on a side surface of the mobile cover car close to the ladle tilting mechanism, the exhaust chimney is connected to the fixed air duct, and the fan is used for negative pressure exhaust of the fixed air duct.

[0007] Furthermore, the tipping area is a cubic structure with openings on the side and top surfaces.

[0008] Furthermore, a refilling foundation for storing the slag pot is provided in the tipping area.

[0009] Furthermore, a maintenance walkway is provided on the top of the retaining wall and extends horizontally outward.

[0010] Furthermore, the mobile cover vehicle comprises a dust removal cover made of a steel structure, the inner side of which is filled with a lightweight silicate heat insulating material.

[0011] Furthermore, the working position and the standby position of the mobile cover vehicle are respectively located at two ends of the track, and the working position and the standby position on the track are respectively provided with a first limiter and a second limiter for limiting the movement of the mobile cover vehicle.

[0012] Furthermore, a protective plate is provided on the inner side of the track.

[0013] Furthermore, the fixed air duct is provided with an electric valve, and the electric valve is interlocked with the fan.

[0014] Furthermore, the ladle tipping mechanism is a crane gantry hook.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] The utility model discloses a kind of ladle casting slag tilting dust removal device with simple structure, reasonable layout, flexible operation, through the setting of the tilting area, can not only effectively prevent the casting slag from splashing around when pouring the slag, but also facilitate the collection of waste slag and internal cleaning, and the mobile cover car is arranged above the retaining wall, which is not only convenient for maintenance and repair, but also can effectively prevent the high-temperature molten slag from damaging the mobile cover car body, the device can be applied to the new environmental dust removal facilities of the plant, and can also be applied to the technical transformation of the existing system.

[0017] The present invention will be described in further detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model of the ladle casting slag tilting dust removal device;

[0019] Figure 2 It is a schematic diagram of the mobile cover vehicle in the working position of the ladle casting slag tilting and dust removal device of the utility model;

[0020] Figure 3 It is a schematic diagram of a mobile cover car in a standby position in a ladle casting slag tilting and dust removal device of the utility model.

[0021] Explanation of the accompanying reference numerals: 1. retaining wall; 2. tipping area; 3. slag pouring; 4. maintenance walkway; 5. ladle; 6. mobile cover car; 7. electric valve; 8. fixed air duct; 9. re-pouring foundation; 10. crane gantry hook. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, a conflicting connection or an integral connection. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features; in the description of the present utility model, unless otherwise specified, "multiple" and "several" mean two or more.

[0026] like Figure 1 , Figure 2 and Figure 3As shown, this embodiment provides a ladle casting slag tilting and dust removal device, including a ladle tilting mechanism, a retaining wall 1, a mobile cover car 6, a fixed air duct 8, a fan and an exhaust pipe (not shown in the figure), wherein the ladle tilting mechanism is used to tilt the ladle casting slag into the slag pot 3, the retaining wall 1 has a plurality of blocks, which are enclosed to form a tilting area 2 for accommodating the slag pot 3, the ladle tilting mechanism is located above the tilting area 2, and at the same time, tracks are provided on the tops of the two relatively arranged retaining walls 1, the bottom of the mobile cover car 6 is slidably connected to the track of the retaining wall 1, and the top of the mobile cover car 6 is connected to the fixed air duct 8 is slidingly connected, and the mobile cover car 6 moves back and forth between the working position and the standby position on the track. When the mobile cover car 6 is in the working position, the mobile cover car 6 covers the tipping area 2 to collect the smoke and dust generated by the tipping of the ladle casting slag. A slag pouring port for the ladle mouth 5 to extend into the tipping is opened on the side of the mobile cover car 6 close to the ladle tipping mechanism. The exhaust pipe is connected to the fixed air duct 8, and the fan is used for negative pressure exhaust of the fixed air duct 8, so that the smoke and dust generated by the tipping of the ladle casting slag is transported to the outside of the factory building through the mobile cover car 6, the fixed air duct 8 and the exhaust pipe in sequence.

[0027] When there is a ladle of casting slag hoisted in place and needs to be tipped over, first move the mobile cover car 6 to the working position, turn on the fan, and then drive the ladle tipping mechanism to drive the ladle 5 to rotate, and the ladle mouth of the ladle 5 extends into the mobile cover car 6. The ladle 5 tips over in the mobile cover car 6, and the ladle casting slag flows into the slag pot 3 in the tipping area 2 below. In this process, the mobile cover car 6 collects the smoke and dust generated by the tipping of the ladle casting slag. Under the negative pressure exhaust action of the fan, the smoke and dust are transported to the outside of the factory through the fixed air duct 8 and the exhaust pipe for discharge; when the casting slag in the ladle is tipped over, the ladle tipping mechanism drives the ladle 5 to rotate and return to its original position, and the mobile cover car 6 moves to the standby position, turns off the fan, and the dust removal system stops working.

[0028] Specifically, in the present embodiment, the ladle tipping mechanism adopts a crane gantry hook 10, which is used to hoist the ladle 5 and tip the ladle 5. At the same time, after the ladle casting slag is tipped, the slag pot 3 can also be hoisted.

[0029] In an optional implementation, the tipping area 2 uses three retaining walls 1, which are erected on the ground and enclosed with the ground to form a cubic structure with open sides and top surfaces. Among them, the retaining wall 1 is a reinforced concrete structure. When the ladle casting slag is tipped over, the retaining wall 1 can prevent the casting slag from splashing around, which is convenient for collecting waste slag. The height of the retaining wall 1 is determined according to the size of the traveling gantry hook 10, and the width of the retaining wall 1 is determined according to the size of the ladle 5 and the slag pot 3. A certain safety distance needs to be left between the retaining wall 1 and the ladle 5 and the slag pot 3, which is convenient for the normal lifting of the traveling gantry hook 10; at the same time, the tipping area 2 is designed with a side opening structure, which is convenient for loading machinery to transport and transfer when there is a lot of waste slag accumulated in the tipping area 2, and the internal cleaning is very convenient.

[0030] Furthermore, a refilling foundation 9 is provided in the tipping area 2 for storing the slag pot 3; and an inspection walkway 4 extending horizontally outward is provided on the outer side of the top of the retaining wall 1 for easy inspection and maintenance.

[0031] In an optional implementation, the mobile cover car 6 adopts a wide-gauge steel structure, is closed with steel plates, and includes a dust cover made of a steel structure, the inner side of which is filled with lightweight silicate insulation material, which can prevent the dust cover from deforming when working in a high-temperature environment and reduce the load. The track center distance of the mobile cover car 6 is determined according to the retaining wall, that is, it is related to the diameter of the ladle 5. At the same time, it is necessary to ensure that a certain safety distance is left between the mobile cover car 6 and the ladle 5. The bottom of the mobile cover car 6 is designed with 4 running wheels, which move on the track at the top of the retaining wall 1. The running speed of the mobile cover car 6 is about 2-20m / min. There is a gap of about 30mm between the top of the mobile cover car 6 and the fixed air duct 8 to ensure the operation of the equipment.

[0032] In order to collect the smoke and dust generated by the overturning of the ladle casting slag to the maximum extent, the lower edge of the air inlet side of the mobile cover car 6 is as close as possible to the ladle opening of the ladle 5, leaving a certain safe distance. In this embodiment, the mobile cover car 6 is designed as a top suction large-capacity space enclosed type, which is easy to move and control, can effectively collect the smoke and dust generated by the overturning of the ladle casting slag, reduce environmental pollution, and improve the working environment.

[0033] In an optimized implementation, the working position and the standby position of the mobile cover car 6 are respectively located at the two ends of the track. When the mobile cover car 6 is in the working position, it is necessary to ensure that the mobile cover car 6 can completely cover the tipping area 2. When the mobile cover car 6 is in the standby position, it is necessary to ensure that the gantry hook 10 can smoothly hang the slag can 3, and a certain safety distance needs to be left between the slag can 3 and the mobile cover car 6 when hanging. Furthermore, the working position and the standby position on the track are respectively provided with a first limiter and a second limiter for limiting the movement of the mobile cover car 6. The first limiter and the second limiter can be used, but not limited to, a travel switch or a proximity switch. The first limiter and the second limiter are used to realize the stop control of the mobile cover car 6, and the mobile cover car 6 can move back and forth between the two working positions.

[0034] Optimally, a protective plate is provided on the inner side of the track to effectively prevent the high-temperature slag from damaging the mobile cover car, and at the same time effectively prevent the casting slag from splashing onto the track and affecting the operation of the mobile cover car 6.

[0035] In an optimized implementation manner, an electric valve 7 is provided on the fixed air duct 8, and the electric valve 7 is interlocked with the fan. When the casting slag in the ladle starts to tip over, the mobile cover car 6 runs to the working position and the fan is turned on. At this time, the electric valve 7 is interlocked and opened. Under the negative pressure exhaust action of the fan, the smoke and dust generated by the tipping can be quickly transported to the outside of the factory for discharge. When the casting slag in the ladle is completely tipped over, the mobile cover car 6 runs to the standby position. At this time, the electric valve 7 is interlocked and closed, and the dust removal system stops working.

[0036] To sum up, the ladle casting slag tilting dust removal device provided by the utility model has a simple structure, reasonable layout, and flexible operation. Through the setting of the tilting area, it can not only effectively prevent the casting slag from splashing around when pouring, but also facilitate the collection of waste slag and internal cleaning. The mobile cover car is arranged above the retaining wall, which is not only convenient for maintenance and repair, but also can effectively prevent the high-temperature slag from damaging the mobile cover car body. The device can be applied to the new factory environment dust removal facilities, and is also suitable for the technical transformation of the existing system.

[0037] The above examples are merely illustrative of the present invention and do not constitute a limitation on the protection scope of the present invention. All designs that are identical or similar to the present invention fall within the protection scope of the present invention.

Claims

1. A ladle casting slag tilting and dust removal device, Features: The invention comprises a ladle tilting mechanism, a retaining wall, a mobile cover car, a fixed air duct, a fan and an exhaust chimney, the retaining wall comprises several blocks, which enclose a tilting area for accommodating a slag pot, tracks are provided on the tops of two relatively arranged retaining walls, the mobile cover car covers the tilting area, and the bottom of the mobile cover car is slidably connected to the track of the retaining wall, the top of the mobile cover car is slidably connected to the fixed air duct, the mobile cover car moves back and forth between its working position and the standby position, the ladle tilting mechanism is located above the tilting area and outside the mobile cover car, a slag discharge port for the ladle mouth to extend into for tilting is provided on a side of the mobile cover car close to the ladle tilting mechanism, the exhaust chimney is connected to the fixed air duct, and the fan is used for negative pressure exhaust of the fixed air duct.

2. The ladle casting slag tilting and dust removal device according to claim 1, Features: The tilting area is a cubic structure with open sides and top.

3. The ladle casting slag tilting and dust removal device according to claim 1, Features: A refilling foundation for storing the slag pot is provided in the tipping area.

4. The ladle casting slag tilting and dust removal device according to claim 1, Features: The top of the retaining wall is provided with a maintenance walkway extending horizontally outward.

5. The ladle casting slag tilting and dust removal device according to claim 1, Features: The mobile cover vehicle comprises a dust removal cover made of a steel structure, the inner side of which is filled with a light silicate heat insulation material.

6. The ladle casting slag tilting and dust removal device according to claim 1, Features: The working position and the standby position of the mobile cover vehicle are respectively located at two ends of the track, and the working position and the standby position on the track are respectively provided with a first limiter and a second limiter for limiting the movement of the mobile cover vehicle.

7. The ladle casting slag tilting and dust removal device according to claim 1, Features: A protective plate is provided on the inner side of the track.

8. The ladle casting slag tilting and dust removal device according to claim 1, Features: The fixed air duct is provided with an electric valve, and the electric valve is interlocked with the fan.

9. The ladle casting slag tilting and dust removal device according to claim 1, Features: The ladle tipping mechanism is a crane gantry hook.

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