Cantilever type movable collecting cover for continuous casting bale casting flue gas

Abstract

The utility model provides a continuous casting ladle casting flue gas cantilever type movable collecting cover, relates to the technical field of metallurgical environment-friendly flue gas dust removal auxiliary devices, and aims to solve the problems that the bearing weight of a steel structure of a casting span is increased due to an existing roof collecting cover structure, a plant needs to be reinforced when a dust removal cover is arranged, and the production and processing cost is increased; the problems of high energy consumption and large investment of a dust removal system due to the fact that the distance between a cover opening of a roof cover and a casting opening of a steel ladle is generally close to about 15 m, the flue gas collection efficiency is low, the flue gas collection effect is poor, and the air volume required by the dust removal system of a roof cover collection process is large are solved. Comprising steel beam structures, the steel beam structures are symmetrically distributed, a crown block is arranged at the tops of the steel beam structures, a ladle turret is arranged below the crown block, a steel ladle is arranged on the ladle turret, a steel structure frame is arranged on the left side of the ladle turret, and a tundish car is arranged on the right side of the steel structure frame. A tundish is arranged on the tundish trolley, and a supporting platform is fixedly connected to the steel structure frame.

Description

Technical Field

[0001] The utility model relates to the technical field of metallurgical environmental protection fume dust removal auxiliary devices, in particular to a cantilevered movable collection hood for continuous casting ladle casting fume. Background Art

[0002] The steelmaking and pouring process refers to the methods and techniques used to pour molten steel into ingots. There are two types of casting: continuous ladle casting and steel car casting. During the casting process, a large amount of smoke and dust is generated in the casting area, impacting the workshop and surrounding environment.

[0003] For most ladle casting operations, which are located between the steel casting bay and the columns, the current successful approach is to design mobile capture hoods that utilize high and low rails, using the columns of the plant and the operating platform on the high rail side of the middle ladle car to capture the generated fumes. This capture effect meets environmental protection requirements. For some ladle casting operations where the ladle turntable is located in the middle of the casting bay, the use of mobile capture hoods on high and low rails is not feasible due to production and maintenance logistics routes. Therefore, rooftop hoods installed on the top of the casting bay are the only option for fume capture.

[0004] The aforementioned roof-mounted fume capture device presents the following challenges: The existing roof capture hood structure increases the weight of the casting span's steel structure, requiring plant reinforcement when installing the dust hood, increasing project construction costs. The roof hood opening is typically approximately 15 meters from the ladle pouring port, resulting in low fume capture efficiency and poor results. The roof hood capture process also requires a high air volume, resulting in high energy consumption and high investment. Therefore, designing a mobile, cantilevered fume capture hood for continuous casting ladles is crucial to address these technical challenges. Utility Model Content

[0005] The purpose of the utility model is to solve the problem that the existing roof collection hood structure causes the steel structure of the casting span to bear more weight, and the factory building needs to be reinforced when the dust removal hood is set, which increases the project construction cost; the roof hood opening is generally about 15m away from the ladle casting opening, the smoke exhaust and collection efficiency is low and the effect is poor, and the dust removal system of the roof hood capture process requires a large air volume, resulting in high energy consumption and large investment in the dust removal system. A cantilevered mobile collection hood for continuous casting ladle casting smoke is proposed.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a cantilevered mobile collection hood for continuous casting ladle casting smoke, comprising a steel beam structure, the steel beam structure is symmetrically distributed, a crane is provided on the top of the steel beam structure, a ladle turntable is provided below the crane, a ladle is provided on the ladle turntable, a steel structure frame is provided on the left side of the ladle turntable, a middle ladle car is provided on the right side of the steel structure frame, a middle ladle is provided on the middle ladle car, a support platform is fixedly connected to the steel structure frame, the support platform is composed of a steel structure column and a steel structure beam, rails are symmetrically installed on the support platform, a movable hood walking beam is slidably installed on the rails, and a movable collection hood main body frame is fixedly connected above the movable hood walking beam.

[0007] Preferably, an extension cover body is installed on the right side of the main frame of the movable collection cover.

[0008] Preferably, a flue port is installed at the left end of the extended cover body, and a flue is installed and connected at the position of the flue port.

[0009] Preferably, a counterweight structure is installed on the walking beam of the movable cover, and an anti-overturning structure is installed below the counterweight structure.

[0010] Preferably, the relative position of the extended cover is located directly above the ladle, the tundish and the ladle turntable.

[0011] Preferably, the flue can generate a negative pressure airflow for sucking away the smoke during actual operation.

[0012] Compared with the prior art, the advantages and positive effects of the present invention are:

[0013] 1. In the present invention, during use, an extended hood structure is installed at the right side of the main frame of the mobile collection hood, so that the smoke generated during the casting process can be extracted in time. Compared with the current working condition where a roof hood is used to capture smoke and an ordinary mobile hood cannot be set up to capture smoke, the operating air volume required by the cantilevered mobile collection hood is the same as that of the ordinary mobile hood, which is about 30% of the operating air volume of the roof hood, greatly reducing environmental protection investment and operating costs, meeting the requirements of ultra-low emissions and ultimate energy efficiency. The overall structure is highly flexible and compact in layout, and can be directly installed in the existing work space, reducing production and processing costs, and solving the problem that the existing roof collection hood structure causes the steel structure of the casting span to bear more weight, and the factory building needs to be reinforced when the dust removal hood is set, which increases the project construction cost; the roof hood opening is generally about 15m away from the ladle casting opening, the smoke exhaust and capture efficiency is low and the effect is poor, and the dust removal system of the roof hood capture process requires a large air volume, resulting in high energy consumption and large investment in the dust removal system.

[0014] 2. In the present invention, a counterweight structure is designed on a moving beam during use to ensure the balance of the moving hood during movement. An anti-overturning device is designed on the walking beam on the counterweight side to ensure that the mobile capture hood can operate stably and safely during the production process. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is the main view of the cantilever mobile capture of continuous casting ladle fume of the utility model;

[0016] Figure 2 This is a top view of the cantilever mobile capture of continuous casting ladle fume of the utility model;

[0017] Figure 3 This is a side view of the partial structure of the cantilever mobile capture of continuous casting ladle casting flue gas of the utility model;

[0018] Figure 4 This is an enlarged view of the partial structure of the counterweight structure, anti-overturning structure and main frame of the mobile collection hood in the cantilever mobile collection hood for continuous casting ladle casting flue gas of the utility model.

[0019] Legend: 1. Steel beam structure; 101. Overhead crane; 2. Ladle turntable; 201. Ladle; 3. Steel structure frame; 4. Medium ladle car; 401. Tundish; 5. Support platform; 501. Track; 502. Traveling beam of mobile hood; 6. Main frame of mobile collection hood; 601. Extended hood body; 602. Docking flue opening; 603. Flue; 7. Counterweight structure; 701. Anti-overturning structure. DETAILED DESCRIPTION

[0020] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described below with reference to the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.

[0021] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0022] The utility model provides a cantilever mobile capture hood for continuous casting ladle casting smoke, comprising a steel beam structure 1, the steel beam structure 1 is symmetrically distributed, a crown block 101 is arranged on the top of the steel beam structure 1, a ladle turntable 2 is arranged below the crown block 101, a ladle 201 is arranged on the ladle turntable 2, a steel structure frame 3 is arranged on the left side of the ladle turntable 2, a middle ladle car 4 is arranged on the right side of the steel structure frame 3, a tundish 401 is arranged on the middle ladle car 4, a support platform 5 is fixedly connected to the steel structure frame 3, and the support platform 5 is composed of steel structure columns and Steel structure beam combination, the support platform 5 is symmetrically installed with a track 501, the track 501 is slidably installed with a mobile cover walking beam 502, the upper part of the mobile cover walking beam 502 is fixedly connected with a mobile collection cover main frame 6, the right side of the mobile collection cover main frame 6 is installed with an extension cover body 601, the left end of the extension cover body 601 is installed with a docking flue port 602, and a flue 603 is installed and connected at the position of the docking flue port 602. The flue 603 can generate a negative pressure airflow for extracting smoke, so as to facilitate the timely extraction of the airflow generated during the casting process;

[0023] When the cantilever mobile capture hood for continuous casting ladle casting smoke is actually used, the smoke during ladle casting production is mainly generated from the ladle 201 mouth, the casting port of ladle 201, the casting port of tundish 401 and other positions, and these positions are far away from the operating platform on the high rail side of the tundish car 4. The smoke and dust emitted during the casting process are completely out of the negative pressure zone of the capture hood. In order to ensure a good capture effect, the main frame of the mobile hood is relied on to extend the hood body 601 to the vicinity of the casting port of ladle 201, so as to meet the requirement that the smoke and dust are basically In the negative pressure area of ​​the collection hood, since the extension hood body 601 extends outward for too long, the center of gravity of the cantilever structure is unstable. Therefore, a counterweight structure 7 is designed on a moving beam to ensure the balance of the moving hood during the walking process. An anti-rollover device is designed at the walking beam with the counterweight side to ensure that the moving collection hood can operate stably and safely during the production process. The main frame structure with the cantilever extension hood body, the counterweight structure 7 and the anti-rollover device are all fixed on the moving hood walking beam 502. As the moving hood walking beam 502 can In order to move safely and smoothly on the track 501, during normal production (ladle 201, turret rotation, water gate casting, molten steel temperature measurement and other operations), the cantilever capture hood stays in the casting area, and the smoke generated during production is sucked into the pipe in the negative pressure area of ​​the capture hood to capture the smoke; during maintenance (replacing the crystallizer or when the tundish 401 needs to be lifted due to a malfunction of the tundish car 4), the cantilever capture hood is manually moved to the maintenance position to free up operating space for maintenance. By installing an extension on the right side of the main frame 6 of the mobile capture hood, the cantilever capture hood can be moved to the maintenance position to free up operating space for maintenance. The extended hood body 601 structure enables the smoke generated during the casting process to be extracted in time. Compared with the current working conditions where a roof hood is used to capture smoke and an ordinary mobile hood cannot be set up to capture smoke, the operating air volume required by the cantilevered mobile capture hood is the same as that of the ordinary mobile hood, which is about 30% of the operating air volume of the roof hood. This greatly reduces environmental protection investment and operating costs, meets the requirements of ultra-low emissions and the ultimate energy efficiency. The overall structure is highly flexible and compact in layout, and can be directly installed in the existing work space, reducing production and processing costs.

[0024] Example 1

[0025] like Figure 1-4 As shown, a counterweight structure 7 is installed on the moving cover walking beam 502, and an anti-overturning structure 701 is installed below the counterweight structure 7. The relative position of the extended cover body 601 is located directly above the ladle 201, the tundish 401 and the ladle turntable 2. The flue 603 can generate a negative pressure airflow for sucking away the flue gas during actual operation.

[0026] The effect achieved by the entire embodiment 1 is that, during use, a counterweight structure 7 is designed on a moving beam to ensure the balance of the moving hood during walking, and an anti-overturning device is designed on the walking beam on the counterweight side to ensure that the mobile capture hood can operate stably and safely during the production process.

[0027] Working principle: The smoke during ladle casting is mainly generated from the ladle mouth, the casting port of the ladle, the casting port of the tundish and other positions, and these positions are far away from the operating platform on the high rail side of the tundish car. The smoke and dust emitted during the casting process are completely out of the negative pressure zone of the capture hood. In order to ensure a good capture effect, the main frame of the mobile hood is relied on to extend the extension hood body to the vicinity of the casting port of the ladle to ensure that the smoke and dust are basically in the negative pressure zone of the capture hood. Since the extension hood body is extended outward for too long, the center of gravity of the cantilever structure is unstable. Therefore, a counterweight structure is designed on a moving beam to ensure the balance of the moving hood during walking. At the walking beam with the counterweight side, An anti-overturning device is designed to ensure that the mobile collection hood can operate stably and safely during the production process. The main frame structure with the cantilevered extension hood, counterweight structure and anti-overturning device are all fixed on the mobile hood walking beam. As the mobile hood walking beam can move safely and smoothly on the track, during normal production (ladle, turntable rotation, water gate casting, molten steel temperature measurement and other operations), the cantilevered collection hood stays in the casting area, and the smoke generated during production is sucked into the pipe in the negative pressure area of ​​the collection hood to capture the smoke; during maintenance (replacing the crystallizer or the tundish needs to be lifted due to a malfunction of the tundish car), the cantilevered collection hood is manually moved to the maintenance position to free up operating space for maintenance.

Claims

1. A cantilevered mobile collection hood for continuous casting ladle fume, comprising a steel beam structure (1), wherein the steel beam structure (1) is symmetrically distributed, and a crane (101) is provided on the top of the steel beam structure (1), characterized in that: A ladle turntable (2) is provided below the overhead crane (101), a ladle (201) is provided on the ladle turntable (2), a steel structure frame (3) is provided on the left side of the ladle turntable (2), a middle ladle car (4) is provided on the right side of the steel structure frame (3), a tundish (401) is provided on the middle ladle car (4), a support platform (5) is fixedly connected to the steel structure frame (3), the support platform (5) is composed of a steel structure column and a steel structure beam, a track (501) is symmetrically installed on the support platform (5), a movable cover walking beam (502) is slidably installed on the track (501), and a movable collection cover main body frame (6) is fixedly connected above the movable cover walking beam (502).

2. The cantilevered movable collection hood for continuous casting ladle fume according to claim 1 is characterized in that: An extension cover body (601) is installed on the right side of the movable collection cover main frame (6).

3. The cantilevered movable collection hood for continuous casting ladle fume according to claim 2 is characterized in that: A flue port (602) is installed at the left end of the extended cover body (601), and a flue (603) is installed and connected at the flue port (602).

4. The cantilevered movable collection hood for continuous casting ladle fume according to claim 1 is characterized in that: A counterweight structure (7) is installed on the moving cover walking beam (502), and an anti-overturning structure (701) is installed below the counterweight structure (7).

5. The cantilevered movable collection hood for continuous casting ladle fume according to claim 2 is characterized in that: The relative position of the extended cover body (601) is located directly above the ladle (201), the tundish (401) and the ladle turntable (2).

6. The cantilevered movable collection hood for continuous casting ladle fume according to claim 3 is characterized in that: The flue (603) can generate a negative pressure airflow for sucking away the smoke during actual operation.

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