Exhaust gas exhausting device for suspension smelting
By designing a flue gas collection hood that fits closely to the furnace body and a flue gas exhaust device with rotating connecting parts, the problems of difficult and slow collection of harmful gases and insufficient operating space in the flue smelting furnace are solved, achieving efficient waste gas treatment and a safe and reliable operating environment.
Patent Information
- Application Number
- CN202422010219.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-20
- Publication Date
- 2025-10-31
- Estimated Expiration
- 2034-08-20
AI Technical Summary
Existing flue gas treatment devices for smelting furnaces cannot fit tightly against the cylindrical furnace body, making it difficult to quickly collect harmful gases when the furnace door is opened, causing them to easily disperse. In addition, insufficient operating space affects the opening of the furnace door.
An exhaust gas device was designed, which includes an exhaust gas collection hood, a rotating connecting component, and an upper exhaust pipe. The exhaust gas collection hood fits tightly against the furnace body, and the rotating connecting component enables full coverage collection of exhaust gas. The rotating connecting component moves away from or closer to the furnace door to ensure that the furnace door can be opened normally.
It achieves efficient collection and discharge of exhaust gas, protects the health of operators, reduces the probability of failure and operating costs, and simplifies the maintenance process.
Smart Images
Figure CN223500164U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of suspended smelting waste gas technology, and in particular relates to a waste gas exhaust device for suspended smelting. Background Technology
[0002] Suspension melting furnaces utilize electromagnetic fields to suspend the molten metal pool for melting. Their main advantages include: no crucible contamination, pure alloys, minimal burn-off due to electromagnetic stirring, uniform and accurate composition, and high melting temperatures exceeding 3000℃. They have wide applications in high-temperature metallurgy and metal reduction, and are particularly suitable for smelting refractory metals, producing high-performance alloy materials to meet the specific needs of aerospace, new energy, and other fields.
[0003] Currently, there are few waste gas treatment devices for suspension smelting furnaces. Suspension smelting furnaces generate a significant amount of gases containing harmful substances during metal smelting, which, when directly released into the atmosphere, impact the environment. Effective waste gas exhaust devices can not only reduce environmental pollution but also protect the health of workers. Suspension smelting furnaces are cylindrical, while ordinary waste gas exhaust devices are typically horn-shaped or cuboid, making it impossible to achieve a tight fit with the cylindrical furnace body. If ordinary exhaust devices are used, when the furnace door is opened after smelting, the portion of harmful gases far from the collection hood has a long journey to reach the hood, hindering rapid collection and easily drifting into the working environment. Opening the furnace door requires manual operation of the locking device between the door and the furnace body, necessitating sufficient operating space. Ordinary waste gas exhaust devices are generally made of rigid stainless steel, preventing the collection hood from being moved during use, resulting in insufficient space to operate the locking device between the furnace door and the furnace body edge, thus affecting door opening. Summary of the Invention
[0004] The purpose of this utility model is to provide a waste gas exhaust device for suspension melting, which can be located away from or close to the furnace door of the suspension melting furnace, ensuring that the furnace door can be opened normally while collecting the harmful gases volatilized when the suspension melting furnace is started.
[0005] To achieve the above objectives, this utility model adopts the following technical solution:
[0006] A waste gas exhaust device for suspension smelting, the waste gas exhaust device for suspension smelting includes a waste gas collection hood 1, a rotating connecting component 5 and an upper exhaust pipe 6;
[0007] The exhaust gas collection hood 1 is closely fitted to the furnace body around the exhaust gas outlet of the suspension melting furnace; the exhaust gas outlet is located on the upper part of the furnace body of the suspension melting furnace and close to the furnace door of the suspension melting furnace.
[0008] The top of the exhaust gas collection hood 1 is provided with an opening 9; the exhaust gas collection hood 1 is fixedly connected to the bottom end of the rotating connecting component 5 through the lower exhaust component; the upper end of the rotating connecting component 5 is rotatably connected to one end of the upper exhaust pipe 6.
[0009] Furthermore, the rotating connection component 5 includes an outer cylinder 5-1 and a rotating bearing 5-2; the outer cylinder 5-1 is fixedly fitted onto the outside of the rotating bearing 5-2; the upper end of the rotating bearing 5-2 is rotatably and sealed to one end of the upper exhaust pipe 6.
[0010] Furthermore, the upper ends of the outer cylinder 5-1 and the rotating bearing 5-2 are provided with limiting components.
[0011] Furthermore, the lower exhaust component includes a lower exhaust pipe 3 and a connecting inclined pipe 4;
[0012] The lower end of the lower exhaust pipe 3 is fixed to the opening 9 at the top of the exhaust gas collection hood 1, and the upper end is fixedly connected to the lower end of the connecting inclined pipe 4; the upper end of the connecting inclined pipe 4 is sealed to the bottom end of the rotating bearing 5-2.
[0013] Furthermore, the exhaust gas collection hood 1 is arc-shaped.
[0014] Furthermore, the inner side of the exhaust gas collection hood 1 is provided with a pre-filter 2 to prevent foreign objects from entering the exhaust gas collection hood 1.
[0015] Furthermore, the exhaust gas collection hood 1 is made of stainless steel.
[0016] Furthermore, the upper exhaust pipe 6 is connected to the main exhaust system of the plant via the connection port 8;
[0017] A shut-off valve 7 is provided between the upper exhaust pipe 6 and the connection port 8; the shut-off valve 7 is located near the connection port 8.
[0018] In summary, the technical solution of this utility model has the following technical effects:
[0019] This invention features a waste gas collection hood that fits snugly against the furnace body around the waste gas exhaust port near the furnace door of a suspension melting furnace. This close fit covers most of the cylindrical furnace body, ensuring comprehensive collection and discharge of waste gas with high efficiency. The rotating connecting component effectively collects harmful gases emitted when the furnace door is opened, protecting the health and safety of operators. Multiple fixed connections reduce the probability of malfunctions, lowering operating costs and simplifying maintenance. The waste gas collection hood and rotating connecting component ensure that the waste gas exhaust device for suspension melting can be located either near or away from the furnace door, allowing for the collection of harmful gases emitted during furnace opening without obstructing normal door opening. Attached Figure Description
[0020] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0021] Figure 1 This is a schematic diagram of the exhaust gas device for suspension smelting according to an embodiment of the present utility model;
[0022] Figure 2 This is a schematic diagram of the exhaust gas collection hood according to an embodiment of the present utility model;
[0023] Figure 3 This is a schematic diagram of the rotating connection component according to an embodiment of the present utility model. Detailed Implementation
[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0025] This embodiment provides a waste gas exhaust device for suspension smelting, referencing... Figure 1 The exhaust gas device for suspension smelting includes an exhaust gas collection hood 1, a rotating connecting component 5, and an upper exhaust pipe 6.
[0026] To reduce the travel distance of exhaust gas to the exhaust gas device for suspension melting, this embodiment designs the exhaust gas collection hood 1 in an arc shape, ensuring a tight fit between the hood 1 and the furnace body around the exhaust port near the furnace door. To prevent harmful gases from corroding the exhaust gas device, the exhaust gas collection hood 1 is made of stainless steel. Furthermore, to prevent larger objects from being sucked into the exhaust gas device and clogging the pipes, this embodiment includes a pre-filter 2 on the inner side of the exhaust gas collection hood 1 to prevent foreign objects from entering.
[0027] In this embodiment, the exhaust port is located on the upper part of the suspension melting furnace body, near the furnace door (not shown in the figure). An opening 9 is provided at the top (i.e., the middle of the outer side) of the exhaust gas collection hood 1, as shown in the reference figure. Figure 2 The exhaust gas collection hood 1 is fixedly connected to the bottom end of the rotating connecting component 5 via the lower exhaust component. The upper end of the rotating connecting component 5 is rotatably connected to one end of the upper exhaust pipe 6. The other end of the upper exhaust pipe 6 is connected to the main exhaust system of the plant via the connection port 8. A shut-off valve 7 is installed between the upper exhaust pipe 6 and the connection port 8. The shut-off valve 7 is located near the connection port 8. The valve of the shut-off valve 7 can be manually adjusted to open or close. It can be opened during operation.
[0028] In this embodiment, the structure of the rotating connecting component 5 is referenced. Figure 3 The system includes an outer cylinder 5-1 and a rotating bearing 5-2, with the outer cylinder 5-1 fixedly mounted on the outside of the rotating bearing 5-2. To prevent collected exhaust gas from overflowing the pipe through the rotating bearing 5-2 and to ensure that the collected exhaust gas does not leak into the environment during transmission, the upper end of the rotating bearing 5-2 is rotatably connected to one end of the upper exhaust pipe 6 via a sealing component (such as a sealing gasket). Under the action of the rotating bearing 5-2, the outer cylinder 5-1 can be manually rotated 360° within the range of 0 to 90°, which allows the exhaust gas collection hood 1 to be positioned away from or near the furnace door of the suspension melting furnace without affecting the opening of the furnace door. Simultaneously, limit components are provided at the upper ends of the outer cylinder 5-1 and the rotating bearing 5-2 to further ensure that the exhaust gas collection hood is positioned away from or near the furnace door of the suspension melting furnace.
[0029] The lower exhaust component in this embodiment includes a lower exhaust pipe 3 and a connecting inclined pipe 4. To ensure that harmful gases do not overflow at the connection point, the lower end of the lower exhaust pipe 3 is fixed (e.g., welded) to the opening 9 at the top of the exhaust gas collection hood 1, and the upper end is fixedly connected to the lower end of the connecting inclined pipe 4. The upper end of the connecting inclined pipe 4 is sealed to the bottom end of the rotating bearing 5-2 (i.e., the rotating lower connection port 11). In this embodiment, the connecting inclined pipe 4 is S-shaped.
[0030] The working process of this embodiment is as follows: When the equipment is turned on, the harmful gases volatilized when the furnace door of the suspension melting furnace is opened are collected by the exhaust gas collection hood 1 and enter the exhaust system of the plant in sequence through the lower exhaust pipe 3, the connecting inclined pipe 4, the rotating connecting component 5 and the upper exhaust pipe 6.
[0031] This embodiment achieves comprehensive collection and discharge of exhaust gases by tightly fitting the exhaust hood around the exhaust port of the suspension melting furnace, covering most of the cylindrical furnace body and ensuring high exhaust efficiency. The rotating connecting component effectively collects harmful gases emitted when the furnace door is opened, protecting the health and safety of operators. Multiple fixed connections reduce the probability of malfunctions, lowering operating costs and simplifying maintenance. The exhaust hood and rotating connecting component ensure that the exhaust device for suspension melting can be located away from or near the furnace door, guaranteeing that the collection of harmful gases emitted during furnace opening does not hinder normal door opening.
[0032] Please note that the technical features of the above embodiments can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments have been described. However, as long as the combination of these technical features does not contradict each other, it should be considered within the scope of this specification. The above embodiments only illustrate several implementation methods of this application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the invention patent. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.
Claims
1. A waste gas exhaust device for suspension smelting, characterized in that, The exhaust device for suspended smelting includes an exhaust gas collection hood (1), a rotating connecting component (5), and an upper exhaust pipe (6); The exhaust gas collection hood (1) is closely fitted to the furnace body around the exhaust gas outlet of the suspension melting furnace; the exhaust gas outlet is located on the upper part of the furnace body of the suspension melting furnace and close to the furnace door of the suspension melting furnace. The exhaust gas collection hood (1) has an opening (9) at its top; the exhaust gas collection hood (1) is fixedly connected to the bottom end of the rotating connecting component (5) through the lower exhaust component; the upper end of the rotating connecting component (5) is rotatably connected to one end of the upper exhaust pipe (6).
2. The exhaust gas device for suspension smelting according to claim 1, characterized in that, The rotating connection component (5) includes an outer cylinder (5-1) and a rotating bearing (5-2); the outer cylinder (5-1) is fixedly fitted onto the outside of the rotating bearing (5-2); the upper end of the rotating bearing (5-2) is sealed and rotatably connected to one end of the upper exhaust pipe (6).
3. The exhaust gas device for suspension smelting according to claim 2, characterized in that, Limiting components are provided at the upper ends of the outer cylinder (5-1) and the rotating bearing (5-2).
4. The exhaust gas device for suspension smelting according to claim 3, characterized in that, The lower exhaust component includes a lower exhaust pipe (3) and a connecting inclined pipe (4); The lower end of the lower exhaust pipe (3) is fixed to the opening (9) at the top of the exhaust gas collection hood (1), and the upper end is fixedly connected to the lower end of the connecting inclined pipe (4); the upper end of the connecting inclined pipe (4) is sealed to the bottom end of the rotating bearing (5-2).
5. The exhaust gas device for suspension smelting according to any one of claims 1 to 4, characterized in that, The exhaust gas collection hood (1) is arc-shaped.
6. The exhaust gas device for suspension smelting according to claim 5, characterized in that, The inner side of the exhaust gas collection hood (1) is provided with a collection hood pre-filter (2) to prevent foreign objects from entering the exhaust gas collection hood (1).
7. The exhaust gas device for suspension smelting according to claim 6, characterized in that, The exhaust gas collection hood (1) is made of stainless steel.
8. The exhaust gas device for suspension smelting according to claim 1, characterized in that, The upper exhaust pipe (6) is connected to the main exhaust system of the plant through the connection port (8); A shut-off valve (7) is provided between the upper exhaust pipe (6) and the connection port (8); the shut-off valve (7) is close to the connection port (8).