Iron returning station

Abstract

The utility model relates to an iron returning station which comprises a hot metal car. The negative pressure vestibule is a channel which is closed in the circumferential direction, is internally provided with negative pressure, collects gas in a centralized mode and is located above or below the horizontal plane; the molten iron car reciprocates in the negative pressure vestibule, and the negative pressure vestibule is provided with one or more sections of open sections which allow molten iron to be recharged to the molten iron car and are inverted-L-shaped in the upper part and the side direction; the flat trolley is a trolley capable of covering the upper portion of the open section, and the flat trolley is provided with a lifting drive at the open side end in the lateral direction of the open section, can move in a reciprocating mode and covers the upper portion of the open section. The block is a barrier capable of covering the lateral open side of the open section; the closed system has the beneficial effects that the closed system special for the iron returning station is designed, an inverted-L-shaped block is used in the closed system, opening and closing in an original system are achieved, meanwhile, the air curtain device is used for reducing the influence on the environment in the iron mixing process, and the purpose of environmental protection is achieved.

Description

Technical Field

[0001] This utility model belongs to the field of environmental protection, and specifically relates to a return iron station. Background Technology

[0002] Centrifugal casting of ductile iron pipes utilizes a fan-shaped ladle or other molten iron ladle to form a shaped pipe under centrifugal force. However, it is generally difficult to ensure a one-to-one correspondence between the volume of molten iron in the ladle and the number of pipes to be cast. Therefore, during the use of molten iron, there is usually a surplus, or the temperature of the molten iron in the ladle may not meet the requirements, or the centrifuge may malfunction and become inoperable. In these cases, the molten iron from the ladle needs to be returned to the molten iron container. This surplus needs to be returned (also known as recycled iron) to the molten iron container for secondary heating or adjustment to achieve the purpose of reuse.

[0003] The inventors discovered during their research of existing technologies that a closed-loop molten iron transportation system is typically used in smelting areas to eliminate the pollution of the factory environment by flue gas during the molten iron transfer process. Therefore, the original closed environment needs to be disrupted during the molten iron return process to meet the return conditions. At this point, flue gas collection needs to consider the coordination between the two containers during the return process, as well as the method of flue gas recovery.

[0004] Therefore, there is an urgent need for a flue gas collection device for the above-mentioned iron return station to meet the requirements of the original environmental protection closed environment and the iron return process. Summary of the Invention

[0005] To overcome the environmental damage caused by the reflow process in existing technologies, the inventors adopted a phased open approach. A reciprocating trolley is used, with a vertically enclosed surface mounted on it to achieve an inverted L-shaped enclosure of the original system. This avoids the environmental impact of simple openness. Simultaneously, a fan generates an air curtain to block and collect the rising fumes during the reflow process, meeting environmental protection requirements. The technical solution adopted in this invention is: a reflow station, comprising:

[0006] molten iron cart;

[0007] A negative pressure corridor is a circumferentially enclosed passageway with negative pressure inside, which collects air centrally and is located on or below a horizontal plane.

[0008] The molten iron car reciprocates within the negative pressure corridor, and the negative pressure corridor has one or more open sections, the upper and lateral of which allow molten iron to flow back into the molten iron car;

[0009] A flatbed trolley is a trolley that can cover the upper part of the open section. The flatbed trolley is provided with a lifting drive at the open side end of the open section and can move back and forth to cover the upper part of the open section.

[0010] A barrier is a blockage that can cover the open side of the open section;

[0011] The lifting drive drives the seal to be openable and closable, attached to the open side of the open section.

[0012] Furthermore, it also includes

[0013] The air curtain device is a blower located on one side of the upper part of the open section;

[0014] An air collection device is a device located opposite the blower of the air curtain device to recover the air blown by the air curtain device.

[0015] Furthermore,

[0016] The air curtain device is a cross-flow fan with an axial length greater than or equal to the length of the molten iron car or the diameter of the iron pouring spout on the molten iron car.

[0017] The air collection device is a dust collection hood with its opening facing the air curtain device.

[0018] Furthermore,

[0019] The elevation of the air outlet of the air curtain device is greater than the elevation of the air collection device.

[0020] Furthermore,

[0021] The lifting drive is a hoist drive;

[0022] The barrier is a roller shutter door.

[0023] Furthermore,

[0024] The flatbed trolley is provided with side skirts extending toward the negative pressure corridor.

[0025] Furthermore,

[0026] The flatbed trolley is equipped with a track at its lower part, which is located on both sides of the open section, allowing the flatbed trolley to ride on the upper part of the open section.

[0027] The advantages of this utility model over the prior art are as follows: a closed system specifically designed for the iron return station is provided, and an inverted L-shaped barrier is used in the closed system to achieve the opening and closing of the original system. At the same time, an air curtain device is used to reduce the impact on the environment during the iron return process, thereby achieving the goal of environmental protection. Attached Figure Description

[0028] Figure 1 This is a front view of the closed state of a specific embodiment of the present utility model;

[0029] Figure 2 This is a schematic diagram of the return iron state in a specific embodiment of this utility model;

[0030] Figure 3 This is a side view of the iron return station in the open and closed state according to a specific embodiment of this utility model;

[0031] Figure 4 This is a side view of the closed state of the return iron station according to a specific embodiment of this utility model;

[0032] The annotation is represented as follows:

[0033] 100 - Negative pressure corridor; 110 - Molten iron car;

[0034] 200-Flatbed trolley; 210-Lift drive; 211-Blocking stop; 220-Side skirt

[0035] 300 - Air curtain device; 310 - Air collection device;

[0036] 400-Iron Ladle; Detailed Implementation

[0037] The technical solutions in the embodiments are clearly and completely described. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0038] To overcome the environmental damage caused by the reflux process in existing technologies, the inventors adopted a phased open approach. A reciprocating trolley with a vertically enclosed surface is mounted on it to achieve an inverted L-shaped enclosure of the original system, avoiding the environmental impact of simple openness. Simultaneously, a fan generates an air curtain to block and collect the rising fumes during the reflux process, meeting environmental protection requirements. Please refer to [link / reference]. Figures 1 to 4 In this specific embodiment, the technical solution adopted is: a return iron station, comprising:

[0039] Iron molten steel car 110; please refer to Figure 1 The molten iron car 110 can be a car body with an integrated molten iron ladle, or it can be a combination of a molten iron ladle and a flatbed car.

[0040] The negative pressure corridor 100 is a circumferentially enclosed passageway located on or below a horizontal plane, with a negative pressure system inside for centralized gas collection. The negative pressure corridor 100 is the original environmental protection system for collecting flue gas during the operation of molten iron, which is achieved by creating a closed system and generating negative pressure inside to collect the gas.

[0041] The molten iron car 110 reciprocates within the negative pressure corridor 100, and the negative pressure corridor 100 has one or more open sections, the upper and lateral of which allow molten iron to flow back into the molten iron car 110; see also Figure 2 Because during the molten iron return process, the molten iron ladle cannot be too far from the molten iron car 110 to avoid splashing of molten iron, so the passage must be opened to the side, which is why both the top and the sides need to be open.

[0042] The flatbed trolley 200 is a trolley that can cover the upper part of the open section. The flatbed trolley 200 is provided with a lifting drive 210 at the open side end of the open section and can move back and forth to cover the upper part of the open section.

[0043] The barrier 211 is a blockage that can cover the lateral open side of the open section;

[0044] The lifting drive 210 drives the sealing barrier 211 to be openably attached to the open side of the open section. When the flatbed trolley 200 and the sealing barrier 211 are closed, the impact of the opening on the original negative pressure closed environment inside the system is reduced. When it is necessary to return the iron, it is opened by movement.

[0045] In some embodiments, preferably, to reduce flue gas overflow during the reflux process, it also includes

[0046] The air curtain device 300 is a blower located on one side of the upper part of the open section;

[0047] The air collection device 310 is located opposite to the air blower of the air curtain device 300 and is used to collect the air blown by the air curtain device 300.

[0048] In some embodiments, based on the above technical solutions, preferably,

[0049] The air curtain device 300 is a cross-flow fan with an axial length greater than or equal to the length of the molten iron car 110 or the diameter of the molten iron pouring spout on the molten iron car 110. Utilizing the expandability of the cross-flow fan's lateral airflow, an air curtain that can block the overflow of flue gas is formed above the molten iron pouring area. When the flue gas floats upward, it must move laterally under the action of the air curtain and is then collected by the oppositely arranged air collection device 310.

[0050] The air collection device 310 is a dust collection hood with its opening facing the air curtain device 300.

[0051] In some embodiments, to ensure flue gas collection efficiency...

[0052] The elevation of the air outlet of the air curtain device 300 is greater than the elevation of the air collection device 310.

[0053] In some embodiments, preferably

[0054] The lifting drive 210 is a hoist drive;

[0055] The barrier 211 is a roller shutter door.

[0056] In other embodiments, in order to ensure the airtightness of the original system,

[0057] The flatbed trolley 200 is provided with side skirts 220 extending toward the negative pressure corridor 100.

[0058] In some embodiments, preferably

[0059] The flatbed trolley 200 is provided with a track at its lower part, which is located on both sides of the open section, so that the flatbed trolley 200 rides on the upper part of the open section.

[0060] In practical implementation: When molten iron return is not required, the open section is enclosed by the combined action of the flatbed trolley 200 and the sealing barrier 211, preventing the original negative pressure corridor 100 from experiencing flue gas overflow and inability to be collected due to the open section. When molten iron return is required, the flatbed trolley 200 and the sealing barrier 211 move away from the open section, and the molten iron is returned to the molten iron car 110. During this process, flue gas is generated. This flue gas, in its rising state, is blocked by the air curtain device 300, blown laterally to the air collection device 310 for collection, and then discharged to the external flue gas collection system. Through the installation of the above devices, the impact on the original environmental protection system is reduced, while the flue gas during the molten iron return process is collected.

[0061] The beneficial effects are as follows: A closed system specifically designed for the iron return station was designed, and an inverted L-shaped barrier was used in the closed system to achieve the opening and closing of the original system. At the same time, an air curtain device was used to reduce the environmental impact during the iron return process, thus achieving the goal of environmental protection.

[0062] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A de-ironing station, characterized in that, It comprises: a ladle car (110); a negative pressure gallery (100), which is circumferentially closed, has a negative pressure inside, and is a channel located on or below the horizontal plane; the ladle car (110) reciprocates in the negative pressure gallery (100), and the negative pressure gallery (100) is provided with one or more open sections in an inverted L shape in the upper part and on the lateral side, allowing the ladle to backfill into the ladle car (110); a flat trolley (200), which is a trolley that can cover the upper part of the open section, the flat trolley (200) is provided with a lifting drive (210) at the open side end of the lateral side of the open section, and can reciprocate and cover the upper part of the open section; a blocking (211), which is a blocking that can cover the open side of the lateral side of the open section; the lifting drive (210) drives the blocking (211) to be openable and attachable to the open side of the lateral side of the open section.

2. The ironing station according to claim 1, characterized in that, It further comprises an air curtain device (300), which is a blowing device located on one side of the upper part of the open section; an air collection device (310), which is a device located opposite the blowing of the air curtain device (300) to recover the air blown by the air curtain device (300).

3. The iron return station according to claim 2, wherein the air curtain device (300) is a cross-flow fan with an axial length greater than or equal to the length of the ladle car (110) or the diameter of the iron inlet on the ladle car (110); the air collection device (310) is a dust collection cover with an opening facing the air curtain device (300).

4. The iron return station according to claim 2, wherein the outlet elevation of the air curtain device (300) is greater than the elevation of the air collection device (310).

5. The iron return station according to claim 1, wherein the lifting drive (210) is a winch drive; the blocking (211) is a winch door.

6. The iron return station according to claim 1, wherein the flat trolley (200) is provided with a side skirt (220) extending towards the negative pressure gallery (100) on the circumferential side.

7. The iron return station according to claim 1, wherein the flat trolley (200) is provided with a track at the lower part, the track is located on both sides of the open section, and the flat trolley (200) rides on the upper part of the open section.

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