Upper-end light smoke hood for graphitization furnace

Abstract

The utility model discloses an upper end light smoke hood for a graphitization furnace, which comprises a main pipeline (1), branch pipelines (2), a cover plate (3), a bracket (4) and an elastic base (5), and is characterized in that the main pipeline (1) is connected with the side bracket (4), the main pipeline (1) is communicated with a plurality of branch pipelines (2), the cover plate (3) is arranged on the branch pipelines (2), and the elastic base (5) is arranged below the main pipeline (1). The smoke hood is light in upper end, balanced in negative pressure at the front end and the rear end, good in smoke flowability, smooth in smoke exhaust and good in sealing effect of a main pipeline.

Description

Technical Field

[0001] The utility model belongs to the technical field of graphite manufacturing, in particular to an upper light smoke hood for a graphitization furnace. Background Art

[0002] In the graphitization process of the new energy negative electrode industry, a large amount of high-dust and highly corrosive gases are discharged into the factory space. In order to collect and centrally process these gases, a movable smoke hood is needed to cover them. After segmented covering, connection is still required. Prior art Chinese Patent Publication No.; CN115854729A, discloses a smoke exhaust hood for a graphitization furnace, including a smoke exhaust hood body, the smoke exhaust hood body is composed of a first-section smoke hood, a middle-section smoke hood, and a last-section smoke hood, the first-section smoke hood, the middle-section smoke hood, and the last-section smoke hood are all composed of a skeleton and a cover plate, both ends of the smoke exhaust hood body are blocked by a blocking plate, a main pipe is fixed on the smoke exhaust hood body, the cross-section of the main pipe is rectangular, the upper wall of the main pipe is horizontal, and the lower wall of the main pipe is composed of the first-section smoke hood. One end of the hood to the last end of the smoke hood is tilted downward, and a number of branch pipes are evenly distributed on the lower wall of the main pipe and located in the smoke exhaust hood body. The several branch pipes are connected to the main pipe, and the lower ports of the several branch pipes are at the same horizontal height. The disadvantage is that the upper end of the smoke hood is too bulky, and there is often negative pressure at the front end and insufficient negative pressure at the rear end, resulting in unbalanced negative pressure at the front and rear ends and poor smoke fluidity. Even if the power of the induced draft fan is increased, better smoke exhaust effect cannot be achieved, resulting in poor smoke exhaust effect. Summary of the Invention

[0003] The purpose of the utility model is to overcome the above shortcomings and provide a light smoke hood for a graphitizing furnace, which has a light upper end, balanced negative pressure at the front and rear ends, good smoke fluidity, smooth smoke exhaust, and good main pipeline sealing effect.

[0004] The utility model discloses an upper light smoke hood for a graphitizing furnace, comprising a main pipe, branch pipes, a cover plate, a bracket, and an elastic base. The utility model is characterized in that the main pipe is connected to the side bracket, the main pipe is connected to a plurality of branch pipes, the cover plate is installed above the branch pipes, and the elastic base is installed below the main pipe.

[0005] The elastic base consists of a base, a connecting plate, a pressure plate, and a spring. The base is installed with a spring. The side of the base is hinged to the connecting plate, and the connecting plate is hinged to the pressure plate. The pressure plate is pressed on the spring and can slide. The pressure plate is installed under the main pipe.

[0006] There are a plurality of main pipelines, and clamp sealing pads are placed between the main pipelines and covered with quick-connect clamps to connect them.

[0007] The branch pipe is arc-shaped and has a plurality of air holes arranged on the bottom.

[0008] Compared with existing technologies, this utility model offers significant advantages. As can be seen from the above technical solution, the main pipe is connected to a side bracket, connecting several branch pipes. Cover plates are installed above the branch pipes, and elastic bases are installed below the main pipe. The main flue gas pipe, which is fed by the induced draft fan, provides overall negative pressure. The main body is large and heavy. After being welded together using brackets, it is placed at the bottom layer, lowering the overall center of gravity of the system. This reduces the upper mass. After the branch pipes are fixed at a fixed angle using a bending machine, they are welded to the main pipe using a jumper connection. They are internally connected to the main pipe, introducing negative pressure into the branch pipes. Pre-cut holes in the branch pipes achieve an even distribution of wind pressure. Gaps between the branch pipes facilitate oxygen inflow to aid combustion of the combustible gas and facilitate ignition and flame observation by the operator. The retractable cover is made of heat-resistant thin iron plate, directly covering the branch pipes without placing excessive pressure on them. This also reduces overall weight. The main pipe connection section adopts quick-connect clamp connection and sealing, which is convenient for use during the installation of the smoke hood and reduces the loss of negative pressure. The inside of the clamp is lined with a sealing gasket to cope with the slight displacement of the main pipe after installation and provide sufficient air tightness. The elastic base is installed under each section of the main pipe. When the overall installation of the system is completed, it can cope with the slight unevenness of the installation surface so as not to cause excessive pressure locally. It plays the role of balancing the pressure of several main pipes. In short, the smoke hood of this utility model has a light upper end, balanced negative pressure at the front and rear ends, good smoke fluidity, smooth smoke exhaust, and good main pipe sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a structural diagram of the utility model;

[0010] Figure 2 It is a cross-sectional view of the utility model;

[0011] Figure 3 This is a cross-sectional view of the main pipe, quick-connect clamp, and clamp seal of the utility model;

[0012] Figure 4 This is a structural diagram of the main pipeline and quick-connect clamp of the utility model;

[0013] Figure 5 It is a structural diagram of the elastic base of the utility model.

[0014] Marking in the figure

[0015] 1. Main pipe, 2. Branch pipe, 3. Cover plate, 4. Bracket, 5. Elastic base, 51. Base, 52. Connecting plate, 53. Pressure plate, 54. Spring, 6. Quick-connect clamp, 7. Clamp gasket. DETAILED DESCRIPTION

[0016] The following is a detailed description of the specific implementation, structure, features and effects of the present invention in conjunction with the accompanying drawings and preferred embodiments.

[0017] The purpose of this utility model and the solution of its main technical problems are achieved by adopting the following technical solutions:

[0018] The utility model is a light-weight smoke hood at the upper end of a graphitizing furnace, comprising a main pipe 1, a branch pipe 2, a cover plate 3, a bracket 4, an elastic base 5, a quick-connect clamp 6, and a clamp sealing gasket 7, characterized in that: the main pipe 1 is connected to the side bracket 4, the main pipe 1 is connected to a plurality of branch pipes 2, the cover plate 3 is installed on the branch pipe 2, and the elastic base 5 is installed below the main pipe 1, the elastic base 5 is composed of a base 51, a connecting plate 52, a pressure plate 53, and a spring 54, a spring 54 is installed on the base 51, the base 51 side is hinged to the connecting plate 52, the connecting plate 52 is hinged to the pressure plate 53, the pressure plate 53 is pressed on the spring 54 and can slide, the pressure plate 53 is installed below the main pipe 1, there are several main pipes 1, and clamp sealing gaskets 7 are respectively placed between the several main pipes 1 and are connected with the quick-connect clamp 6, the branch pipes 2 are arc-shaped, and a plurality of air holes are provided below.

[0019] During use, after the system is installed, the elastic base 5 responds to minor unevenness of the installation surface. The pressure plate 53 is adjusted by the spring 54 to contract and extend upward. When contracting, the pressure plate 53 moves downward, driving the hinged connecting plate 52 to increase its inclination. The connecting plate 52 drives the hinged base 51 to move. At the same time, the spring 54 moves with the base 51 to prevent excessive pressure from being applied locally. It plays a role in balancing the pressure of several main pipes 1. The main pipe 1 is connected to a fan. When the graphitization furnace is burning, the fan is turned on and exhausts air, creating a negative pressure in the main pipe 1. Volatile and harmful gases enter the branch pipe 2 through the several air holes set on the branch pipe 2, then pass through the branch pipe 2 into the main pipe 1, and then pass through the main pipe 1 and are extracted by the fan. When the graphitization furnace is ignited, wind and oxygen enter through the gaps in the branch pipe 2, adding oxygen to the graphitization furnace. The oxygen entering helps the combustible gas burn. The gaps in the branch pipe 2 also facilitate the operator to perform ignition operations and observe the flame.

[0020] The above description is only a preferred embodiment of the present invention and does not constitute any formal limitation to the present invention. Any simple modification, equivalent change and modification of the above embodiment made according to the technical essence of the present invention without departing from the content of the technical solution of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. A light-weight upper smoke hood for a graphitization furnace, comprising a main pipe (1), a branch pipe (2), a cover plate (3), a bracket (4), and an elastic base (5), characterized in that: The main pipe (1) is connected to the side bracket (4), the main pipe (1) is connected to a plurality of branch pipes (2), a cover plate (3) is installed on the branch pipes (2), and an elastic base (5) is installed below the main pipe (1).

2. The upper lightweight smoke hood for a graphitization furnace according to claim 1, characterized in that: The elastic base (5) is composed of a base (51), a connecting plate (52), a pressure plate (53), and a spring (54). The spring (54) is installed on the base (51). The base (51) is hinged to the connecting plate (52) on the side. The connecting plate (52) is hinged to the pressure plate (53). The pressure plate (53) is pressed on the spring (54) and can slide. The pressure plate (53) is installed below the main pipe (1).

3. The upper lightweight smoke hood for a graphitization furnace according to claim 1, characterized in that: There are a plurality of main pipes (1), and clamp seals (7) are placed between the main pipes (1) and quick-connect clamps (6) are put on them to connect them.

4. The upper lightweight smoke hood for a graphitization furnace according to claim 1, characterized in that: The branch pipe (2) is arc-shaped and has a plurality of air holes arranged on the bottom.

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