A gas flow rotating fume trap

Abstract

The utility model discloses a kind of airflow rotary flue gas capture cover, it is related to flue gas emission equipment technical field, including air suction pipe, the one end of air suction pipe is detachably connected with exhaust pipe, the other end of air suction pipe is equipped with air suction cover, support shaft is equipped in air suction pipe, component for accelerating flue gas flow is wound on the support shaft, the one end of support shaft is equipped with turbulence structure, component for accelerating flue gas flow is helical guide vane, the utility model utilizes in air suction pipe setting helical guide vane, improve the flue gas entering speed at air suction cover air inlet, further improve the speed that flue gas is discharged outward, improve the efficiency of flue gas treatment.

Description

Technical Field

[0001] This utility model relates to the field of flue gas emission equipment technology, and in particular to an airflow rotating flue gas capture hood. Background Technology

[0002] With the development of industrial level, the country is paying more and more attention to the occupational health of workers and environmental protection. Industrial wastewater and exhaust gas generated in production operations must be treated to meet the standards before they can be discharged. At the same time, higher requirements are also put forward for the workshop environment where workers work. The most obvious examples are common pickling and phosphating workshops and welding workshops. In order to prevent the generated fumes from causing occupational harm to workers, it is necessary to discharge the fumes in a timely manner. For example, patent CN 218653595 U, published on March 21, 2023, discloses a fume treatment device for welding the bucket teeth of a forklift. This patent includes a welding station, a fume hood, and a fume treatment device. The device uses a nested structure between a water tank and a water filter cartridge. After the fume is treated for dust and particles, it is discharged into the water filter cartridge through a smoke inlet pipe. When the fume comes into contact with the solution inside the water tank, water-soluble harmful gases are dissolved. Furthermore, acid or alkaline solutions can be added to the water tank at the filling port to change the pH value of the solution, dissolving trace amounts of harmful metal oxide molecules. This prevents harmful substances in the welding fume from entering the air and affecting health, effectively treating harmful gases. This solves the problem of generating large amounts of welding fumes during welding, which contain large amounts of carbon dioxide, ozone, and metal oxides, polluting the working environment and causing various health hazards to welders, such as pneumoconiosis, manganese poisoning, respiratory inflammation, and neurasthenia. This patent effectively dissolves and purifies the fumes generated during welding, reducing secondary harm to welders after inhalation. However, from an objective technical perspective, the patent's solution mainly addresses the purification of fumes, but does not solve the problem of the speed at which fumes travel from the workshop to the treatment device. If the fumes cannot reach the treatment device quickly, the amount of fumes accumulating in the workshop will increase, leading to an increase in fumes concentration, which can cause significant harm to welders in the workshop.

[0003] Therefore, there is an urgent need for a rotating airflow flue gas capture hood to increase the speed of flue gas emission and improve flue gas treatment efficiency. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides an airflow rotating flue gas capture hood, which solves the problem of low flue gas emission velocity in existing flue gas treatment devices.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: A rotating airflow flue gas capture hood includes an air intake pipe, one end of which is detachably connected to an exhaust pipe, and the other end of which is provided with an air intake hood. The hood is characterized in that a support shaft is provided inside the air intake pipe, and a component for accelerating the flow of flue gas is wound on the support shaft, and a turbulence structure is provided at one end of the support shaft.

[0006] Furthermore, the component used to accelerate the flow of flue gas is a spiral guide vane.

[0007] Furthermore, the spoiler structure is a spoiler plate disposed at one end of the support shaft, and the spoiler plate is perpendicular to the axis of the support shaft.

[0008] Furthermore, the support shaft extends beyond the suction hood, the baffle is disposed at one end of the support shaft, and an air intake gap is provided between the baffle and the suction hood.

[0009] Furthermore, the turbulence structure is a tapered turbulence block disposed at one end of the support shaft.

[0010] Furthermore, the conical baffle block is placed inside the air intake hood.

[0011] Furthermore, the support shaft is provided with several fixing rods around its circumference, and one end of each fixing rod abuts against the inner wall of the suction pipe.

[0012] Furthermore, the suction hood is flared.

[0013] Furthermore, the end of the suction pipe away from the suction hood is provided with a connecting flange.

[0014] In summary, the beneficial technical effects of this utility model are as follows: (1) By using a spiral guide vane in the suction pipe, the speed of flue gas entering the air inlet of the suction hood is increased, which further increases the speed of flue gas being discharged outward and improves the efficiency of flue gas treatment.

[0015] (2) By setting up baffles and baffles, the normal flow path of flue gas is changed, so that the flue gas entering the suction pipe rotates faster and the discharge efficiency is higher. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 yes Figure 1 A diagram from another angle; Figure 3 This is a schematic diagram of the first embodiment; Figure 4 This is a schematic diagram of the second embodiment; Figure 5 This is a schematic diagram illustrating the use of this utility model.

[0017] Reference numerals in the attached drawings: 1. Suction pipe; 2. Suction hood; 3. Support shaft; 4. Spiral guide vane; 5. Baffle plate; 6. Conical baffle block; 7. Inlet gap; 8. Fixing rod; 9. Connecting flange; 10. Exhaust pipe; 11. Fan. Detailed Implementation

[0018] The present invention will now be described clearly and completely with reference to the embodiments.

[0019] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0020] In the description of the embodiments, unless otherwise expressly specified and limited, the terms "set," "connect," etc., should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or a connection through an intermediate medium, or it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] See appendix Figure 1-2 The image shows an airflow rotating flue gas capture hood, which includes a suction pipe 1, wherein a connecting flange 9 is welded to one end of the suction pipe 1, and the connection to the exhaust pipe 10 is achieved by bolting through the connecting flange 9 during installation. The other end of the suction pipe 1 is provided with a funnel-shaped suction hood 2, which increases the area for collecting smoke and improves the smoke removal efficiency. A support shaft 3 is fixedly installed in the center of the suction pipe 1. Several fixing rods 8 are welded around the outer wall of the support shaft 3. One end of the fixing rod 8 is fixed to the inner wall of the suction pipe 1. At the same time, a spiral guide plate 4 for accelerating the flow of smoke is welded and wound on the support shaft 3. In use, the suction pipe 1 is connected to the exhaust pipe 10 through the connecting flange 9. The other end of the exhaust pipe 10 is provided with a fan 11 for outward exhaust. The fan 11 provides the main power for the smoke to be discharged outward. When the smoke enters the suction pipe 1 through the suction hood 2 under the action of the fan 11, the flow path of the smoke is changed by the spiral guide plate 4, making it rotate, thereby increasing the flow speed of the smoke. Example 1

[0022] See appendix Figure 3As shown, the support shaft 3 extends beyond the suction hood 2, and a turbulence structure is provided at the end of the support shaft 3 outside the suction hood 2. Specifically, the turbulence structure is a turbulence plate 5 perpendicular to the axis of the support shaft 3, and an air intake gap 7 is provided between it and the suction hood 2. When exhausting flue gas, the path of flue gas flow is changed by the turbulence plate 5, and the flow speed of flue gas is increased in conjunction with the spiral guide plate 4. Example 2

[0023] See appendix Figure 4 As shown, unlike Embodiment 1, the total length of the support shaft 3 is less than the sum of the lengths of the suction pipe 1 and the suction hood 2. At the same time, the turbulence structure is a conical turbulence block 6 set at one end of the support shaft 3. The conical turbulence block 6 is located inside the suction hood 3. When the flue gas is discharged, the flue gas is dispersed by the conical turbulence block 6, so that it can fully contact the spiral guide plate 4 and accelerate the flow. Example 3

[0024] The diameter of the airflow rotating flue gas capture hood can be 560 mm, 710 mm, and 1250 mm. In this embodiment, the overall length of the airflow rotating flue gas capture hood is preferably 1250 mm, and the thickness is 2 mm. The length of the suction pipe 1 is 1000 mm, the outer diameter of the suction pipe 1 is 710 mm, the maximum outer diameter of the suction hood 2 is 1050 mm, the outer diameter of the spiral guide vane 4 is 360 mm, and the distance between the support shaft 3 and the connecting flange 9 is 340 mm.

[0025] See appendix for usage. Figure 5 The entire airflow rotary flue gas capture hood is installed on the top of the workshop where flue gas is generated, and is connected to the exhaust pipe 10 through the connecting flange 9. One end of the exhaust pipe 10 is equipped with a fan 11, which provides power for the entire pipe to exhaust flue gas. When the flue gas is sucked into the suction pipe 1, the flow path is changed under the action of the spiral guide plate 4, which makes the flue gas rotate, increases the flue gas entry speed at the air inlet of the suction hood, further increases the speed at which the flue gas is discharged, and improves the efficiency of flue gas treatment.

[0026] The above description is only a preferred embodiment of the present utility model and is not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape and principle of the present utility model should be included within the scope of protection of the present utility model.

Claims

1. A rotary airflow flue gas collection hood, comprising a suction pipe (1), one end of which is detachably connected to an exhaust pipe (10), and the other end of which is provided with a suction hood (2), characterized in that: The suction pipe (1) is provided with a support shaft (3), and the support shaft (3) is wound with a component for accelerating the flow of flue gas. One end of the support shaft (3) is provided with a turbulence structure.

2. The airflow rotating flue gas capture hood according to claim 1, characterized in that: The component used to accelerate the flow of flue gas is a spiral guide vane (4).

3. The airflow rotating flue gas capture hood according to claim 1, characterized in that: The turbulence structure is a turbulence plate (5) set at one end of the support shaft (3), and the turbulence plate (5) is perpendicular to the axis of the support shaft (3).

4. The airflow rotating flue gas capture hood according to claim 3, characterized in that: The support shaft (3) extends beyond the suction hood (2), and the baffle (5) is disposed at one end of the support shaft (3) and has an air intake gap (7) between it and the suction hood (2).

5. The airflow rotating flue gas capture hood according to claim 1, characterized in that: The turbulence structure is a conical turbulence block (6) set at one end of the support shaft (3).

6. The airflow rotating flue gas capture hood according to claim 5, characterized in that: The conical baffle (6) is placed inside the suction hood (2).

7. The airflow rotating flue gas capture hood according to claim 1, characterized in that: The support shaft (3) is provided with several fixing rods (8) around its circumference, and one end of the fixing rod (8) abuts against the inner wall of the suction pipe (1).

8. The airflow rotating flue gas capture hood according to claim 1, characterized in that: The suction hood (2) is flared.

9. The airflow rotating flue gas capture hood according to claim 1, characterized in that: The end of the suction pipe (1) away from the suction hood (2) is provided with a connecting flange (9).

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