A ladle roaster with full flue gas concentration recovery device

Abstract

The utility model provides a kind of steel ladle roaster with full flue gas centralized recovery device, including dust collecting pipe, dust collecting cover, steel ladle, steel ladle car, cat ladder, hydraulic cylinder, dust removal pipeline, dust removal pipeline interface, nitrogen interface, compressed air interface, natural gas pipeline interface, smoke exhaust interface, combustor and combustion air;Steel ladle is placed on steel ladle car, combustor is connected with combustion air and is set corresponding steel ladle, dust collecting cover is arranged around the cover of steel ladle, dust collecting cover is communicated with dust removal pipeline by dust collecting pipe, dust removal pipeline end is equipped with dust removal pipeline interface, nitrogen interface, compressed air interface, natural gas pipeline interface and smoke exhaust interface are all set on roaster main frame frame.The utility model has the beneficial effects that by L-shaped dust collecting cover, dust collecting pipe and dust removal pipeline cooperation, full collection roasting waste gas can be connected with external processing equipment, reduce pollutant emission, meet environmental protection requirement, each interface respectively guarantees fuel supply, cooling cleaning demand, with practicality and environmental protection.

Description

Technical Field

[0001] This utility model mainly relates to the field of metallurgical equipment technology, specifically to a ladle baking device with a centralized flue gas recovery system. Background Technology

[0002] Ladle preheaters are key equipment in metallurgical production used for preheating ladles, removing moisture, and removing excess water. Traditional ladle preheaters release large amounts of exhaust gas directly into the air during operation. This exhaust gas contains dust, harmful gases, and other pollutants, severely damaging the surrounding environment and failing to meet environmental emission requirements. Furthermore, existing preheater designs lack effective flue gas recovery mechanisms, and adding such devices could interfere with the preheater's rotating and lifting mechanisms, affecting normal operation. Utility Model Content

[0003] 1. The technical problem to be solved by the utility model: This invention provides a ladle baking machine with a centralized flue gas recovery device to solve the technical problems existing in the background art.

[0004] 2. Technical Solution: To achieve the above objectives, the technical solution provided by this utility model is as follows: a ladle baking device with a centralized flue gas recovery system, comprising a dust collection pipe, a dust collection hood, a ladle, a ladle car, a ladder, a hydraulic cylinder, a dust removal pipe, a dust removal pipe interface, a nitrogen interface, a compressed air interface, a natural gas pipe interface, a flue gas exhaust interface, a burner, and combustion air.

[0005] Furthermore, the ladle is placed on the ladle cart, which can move the ladle to the baking station. The burner is connected to the combustion air, which provides the burner with the oxygen required for combustion. The burner is aligned with the open end of the ladle to achieve the baking operation of the ladle.

[0006] Furthermore, the dust collection hood has an L-shaped structure, arranged around the cover of the steel ladle. Its horizontal section extends towards the center of the steel ladle to ensure that the exhaust gas generated during baking can be fully captured. The vertical section is sealed to the dust collection pipe to prevent exhaust gas leakage. The end of the dust collection pipe away from the dust collection hood is connected to the rotating shaft of the baker, and a rotating seal is provided between the two to ensure gas flow without affecting the rotation and lifting action of the front rotating mechanism of the baker.

[0007] Furthermore, the dust collection pipe is detachably connected to the dust removal pipe. The dust removal pipe is arranged along the outside of the main frame of the oven, and the dust removal pipe interface at the end is used to connect to external centralized waste gas treatment equipment to realize subsequent purification treatment of waste gas.

[0008] Furthermore, the nitrogen port, the compressed air port, and the natural gas pipeline port are arranged side by side on the same side of the main frame. Each port is equipped with a sealing connector and is used to connect nitrogen, compressed air, and natural gas, respectively, to ensure the cooling and cleaning of the oven and the fuel supply of the burner. The exhaust port is used to discharge a small amount of residual gas after preliminary treatment.

[0009] Furthermore, the ladder is fixed to one side of the main frame, with its lower end extending to the lower side of the ladle car and its upper end connected to the ladle cover maintenance platform, facilitating the maintenance of the equipment by the staff. Two hydraulic cylinders are provided and symmetrically arranged on both sides of the ladle, with their piston rods hinged to the ladle cover support arm. The extension and retraction of the hydraulic cylinders drive the lifting and lowering of the ladle cover, thereby realizing the opening and closing of the ladle.

[0010] 3. Beneficial effects: Compared with the prior art, the technical solution provided by this utility model has the following advantages: This utility model achieves full-range collection and centralized treatment of baking exhaust gas through the cooperation of L-shaped dust collection hood, dust collection pipe, and dust removal pipeline, effectively reducing pollutant emissions and meeting environmental protection requirements. The rotary sealing connection design between the dust collection pipe and the rotating shaft avoids interference between the recycling device and the rotating lifting mechanism of the baking machine, ensuring that the original functions of the equipment are not affected. The reasonable arrangement of various functional interfaces and execution components makes the equipment structure compact and stable in operation. At the same time, the ladder facilitates equipment maintenance and improves the practicality and operation and maintenance efficiency of the equipment.

[0011] It should be noted that the structures not described in this utility model are the same as or can be implemented using existing technology, and will not be elaborated here, as they do not involve the design points and improvement directions of this utility model. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the overall structure of this utility model from another angle; Figure 3 This is a partial structural schematic diagram of the present invention.

[0013] Figure label: 1. Dust collection pipe; 2. Dust collection hood; 3. Steel ladle; 4. Steel ladle car; 5. Ladder; 6. Hydraulic cylinder; 7. Dust removal pipeline; 8. Dust removal pipeline interface; 9. Nitrogen interface; 10. Compressed air interface; 11. Natural gas pipeline interface; 12. Smoke exhaust interface; 13. Burner; 14. Combustion air. Detailed Implementation

[0014] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, which show several embodiments of the utility model. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the utility model will be more thorough and complete.

[0015] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "page", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0016] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0017] In this utility model, unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," "fixed," "provided with," and "located in" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0018] See attached document Figure 1-3 A ladle baking device with a centralized flue gas recovery system includes a dust collection pipe 1, a dust collection hood 2, a ladle 3, a ladle car 4, a ladder 5, a hydraulic cylinder 6, a dust removal pipe 7, a dust removal pipe interface 8, a nitrogen interface 9, a compressed air interface 10, a natural gas pipe interface 11, a flue gas interface 12, a burner 13, and combustion air 14.

[0019] The ladle 3 is placed on the carrying platform of the ladle car 4, which can be precisely moved to the baking station by track drive; the burner 13 is a natural gas burner, and the combustion air 14 is delivered to the air inlet of the burner 13 by a blower, and the two are fixedly connected by a flange.

[0020] The dust collection hood 2 is made of stainless steel in an L-shape. The length of the horizontal section is less than the height of the vertical section. It is welded and fixed around the cover of the steel ladle 3. A gap for exhaust gas intake is left between the cover and the dust collection hood 2. The dust collection pipe 1 is a seamless steel pipe. One end is welded and sealed to the vertical section of the dust collection hood 2. The other end is connected to the rotating shaft of the oven through a rotary sealing joint. The rotary sealing joint is made of high-temperature resistant fluororubber to ensure reliable sealing in high-temperature environments.

[0021] The dust removal duct 7 is a spiral steel pipe, which is detachably connected to the dust collection pipe 1 through a flange. It is fixed along the outside of the main frame by pipe clamps. The dust removal duct interface 8 adopts a quick connector structure, which facilitates connection with the pipes of external waste gas treatment equipment.

[0022] Nitrogen port 9, compressed air port 10 and natural gas pipeline port 11 all use standard pipe fittings and are welded side by side to the right column of the main frame. Each port is equipped with a ball valve on the outside for controlling the on / off state. The exhaust port 12 is located at the top of the main frame and is connected to the exhaust channel inside the cover.

[0023] The ladder 5 is made of angle steel welded together. The lower end is fixed to the ground foundation, and the upper end is welded to the cover maintenance platform through the platform bracket. The maintenance platform is equipped with guardrails. The hydraulic cylinder 6 is an engineering hydraulic cylinder. Two hydraulic cylinders 6 are symmetrically installed on the two crossbeams on both sides of the main frame. The piston rod is hinged to the cover support arm through the pin. The extension and retraction of the piston rod is controlled by the hydraulic system to realize the lifting and lowering action of the cover.

[0024] During operation, the ladle car 4 moves the ladle 3 to the baking station. The hydraulic cylinder 6 drives the ladle cover to descend and close the ladle 3. Natural gas is connected to the burner 13 through the natural gas pipeline interface 11, and the combustion air 14 is sent in by the blower. The burner 13 is ignited to bake the ladle 3. The exhaust gas generated during baking enters the dust collection pipe 1 through the suction gap of the dust collection hood 2 under negative pressure, and is transported to the external exhaust gas treatment equipment through the dust removal pipe 7 and the dust removal pipe interface 8. The nitrogen connected to the nitrogen interface 9 is used for equipment cooling, the compressed air connected to the compressed air interface 10 is used for pipeline cleaning, and the exhaust port 12 discharges a small amount of residual gas that overflows through the sealing gap of the ladle cover. During equipment maintenance, the staff climbs the ladder 5 to the maintenance platform to perform maintenance operations.

[0025] In summary, addressing the issues of direct exhaust pollution from traditional ladle baking machines and the potential interference of new recovery devices with equipment rotation and lifting, a technical solution is proposed that includes core structural components such as a dust collection pipe 1, an L-shaped dust collection hood 2, a ladle 3, a ladle cart 4, a ladder 5, a hydraulic cylinder 6, a dust removal pipeline 7, a nitrogen interface 9, and a natural gas pipeline interface 11. The L-shaped dust collection hood 2 surrounds the ladle 3 and connects to the dust removal pipeline 7 via the dust collection pipe 1. The dust collection pipe 1 is connected to the rotating shaft and equipped with a rotation seal to prevent interference with equipment operation. The dust removal pipeline 7 connects to external treatment equipment via a dust removal pipeline interface 8 to achieve complete exhaust gas collection. The hydraulic cylinders 6 are symmetrically arranged to drive the ladle cover lifting and lowering. The ladder 5 facilitates maintenance. Each functional interface ensures fuel supply, cooling, and cleaning needs, achieving the goals of efficient exhaust gas recovery, stable equipment operation, and compliance with environmental protection requirements, while also possessing a compact structure and practicality.

[0026] The above-described embodiments are merely illustrative of certain implementations of this utility model, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A ladle baking machine with a centralized flue gas recovery device, characterized in that, The system includes a dust collection pipe (1), a dust collection hood (2), a ladle (3), a ladle car (4), a ladder (5), a hydraulic cylinder (6), a dust removal pipe (7), a dust removal pipe interface (8), a nitrogen interface (9), a compressed air interface (10), a natural gas pipe interface (11), a flue gas interface (12), a burner (13), and combustion air (14); the ladle (3) is placed on the ladle car (4), and the burner (13) is connected to the combustion air (14) and is positioned corresponding to the ladle (3). The dust collection hood (2) is arranged around the cover of the steel ladle (3). The dust collection hood (2) is connected to the dust removal pipe (7) through the dust collection pipe (1). The dust removal pipe (7) is provided with a dust removal pipe interface (8) at the end. The nitrogen interface (9), compressed air interface (10), natural gas pipe interface (11) and smoke exhaust interface (12) are all set on the main frame of the oven. The ladder (5) is fixed to one side of the main frame. The hydraulic cylinder (6) is connected to the rotating and lifting mechanism of the oven.

2. A ladle baking machine with a centralized flue gas recovery device according to claim 1, characterized in that: The dust collection hood (2) has an L-shaped structure, with its horizontal section extending toward the center of the steel ladle (3) and its vertical section sealed to the dust collection pipe (1).

3. A ladle baking machine with a centralized flue gas recovery device according to claim 1, characterized in that: The end of the dust collection pipe (1) away from the dust collection hood (2) is connected to the rotating shaft of the oven, and a rotating seal is provided between the dust collection pipe (1) and the rotating shaft.

4. A ladle baking machine with a centralized flue gas recovery device according to claim 1, characterized in that: The dust removal pipe (7) is arranged along the outside of the main frame of the oven, and the dust removal pipe (7) and the dust collection pipe (1) are detachably connected.

5. A ladle baking machine with a centralized flue gas recovery device according to claim 1, characterized in that: The nitrogen port (9), compressed air port (10) and natural gas pipeline port (11) are arranged side by side on the same side of the main frame, and each port is equipped with a sealing joint.

6. A ladle baking machine with a centralized flue gas recovery device according to claim 1, characterized in that: The lower end of the ladder (5) extends to the side below the ladle car (4), and the upper end of the ladder (5) is connected to the ladle cover maintenance platform of the baking machine.

7. A ladle baking machine with a centralized flue gas recovery device according to claim 1, characterized in that: Two hydraulic cylinders (6) are provided, symmetrically arranged on both sides of the ladle (3), and the piston rod of the hydraulic cylinder (6) is hinged to the cover support arm of the baking oven.

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