Adjustable positioning fume recovery hood

Abstract

This utility model discloses an adjustable flue gas recovery hood, including a flue gas duct, a hood body, an intermediate fixing plate, a support rod, and a rotating assembly. The flue gas duct includes a duct fixing part fixed to a wall and a duct rotating part movably connected by a pin. The duct rotating part and the support rod are movably connected by a rotating seat. The rotating assembly includes a bearing plate, an arc-shaped positioning groove, a rotating cylinder, and a limiting post. The rotating cylinder is fitted with the support rod and rotates through the limiting post and the positioning groove. The intermediate fixing plate, the duct rotating part, and the rotating cylinder form a triangular reinforcement structure through reinforcing rods. The hood body is composed of stacked metal plates, including a flow guiding channel and a cover communicating with a through hole. The bottom opening is suitable for industrial furnaces. This device allows for flexible adjustment of the hood position, enhances structural stability, improves flue gas (including hot gas) recovery efficiency, and is suitable for industrial furnace flue gas recovery.

Description

Technical Field

[0001] This utility model relates to the field of industrial flue gas recovery and treatment technology, and in particular to an adjustable positioning flue gas recovery hood. Background Technology

[0002] In industrial production, industrial furnaces generate large amounts of high-calorie flue gas (i.e., hot gas) during operation. Direct emission of this hot gas not only results in significant energy waste but also increases cooling energy consumption due to heat diffusion affecting the workshop's ambient temperature. Furthermore, impurities such as dust carried in the hot gas exacerbate the environmental burden. However, existing hot gas recovery devices have several limitations: some devices cannot be flexibly repositioned, making them difficult to adapt to the hot gas exhaust ports of different industrial furnaces, leading to insufficient hot gas collection and significant heat loss; some devices lack structural stability and are prone to deformation under long-term impact from high-temperature hot gas, affecting the sealing of the hot gas flow path and further aggravating heat loss; others have unreasonable flow design, causing hot gas to diffuse disorderly within the enclosure, preventing efficient entry into the recovery pipeline and resulting in low recovery efficiency. Therefore, there is an urgent need for a device that can accurately adapt to, stably operate, and efficiently recover hot gas from industrial furnaces to solve the problems of insufficient hot gas recovery and severe energy waste in existing technologies. Utility Model Content

[0003] The purpose of this invention is to provide an adjustable positioning flue gas recovery hood, which solves the above-mentioned problems.

[0004] This utility model is achieved through the following technical solution: An adjustable positioning flue gas recovery hood includes a flue gas duct, a hood body, an intermediate fixing plate, a support rod, and a rotating assembly; the flue gas duct includes a duct fixing part fixed to the wall and a duct rotating part movably connected to the end of the duct fixing part via a pin, the duct rotating part being movably connected to the support rod below the connection point with the duct fixing part, and the support rod being vertically fixed to the ground; The rotating assembly includes a support plate, a positioning groove, a rotating cylinder, and a limiting post. The support plate is fixed on the support rod and connected to the wall. An arc-shaped positioning groove is provided on the upper surface of the support plate. The rotating cylinder is movably sleeved on the support rod and movably connected to the support plate. The limiting post is provided below the rotating cylinder and is vertically inserted into the positioning groove.

[0005] The intermediate fixing plate is connected to the rotating part of the pipe by a reinforcing rod to form a triangular reinforcing structure. The intermediate fixing plate is also fixedly connected to the rotating cylinder by a reinforcing rod.

[0006] Furthermore, The pipe fixing part is provided with a pin hole at its end, and the pipe rotating part is provided with a slot that mates with the pin hole at the corresponding position. The pin passes through the pin hole and the slot to realize the movable connection between the pipe fixing part and the pipe rotating part.

[0007] Furthermore, The other end of the rotating part of the pipe is connected to the intermediate fixing plate. The connection between the intermediate fixing plate and the rotating part of the pipe is provided with a through hole that communicates with the pipe inside the rotating part of the pipe. The lower surface of the intermediate fixing plate is connected to the cover.

[0008] Furthermore, The cover includes stacked metal cover plates, with a flow channel formed between the metal cover plates and a cover provided above the flow channel. The cover is connected to the through hole, and the bottom opening contour of the cover is adapted to the upper contour of the industrial furnace. Furthermore, A rotating seat is provided at the connection between the rotating part of the pipe and the support rod, and the top end of the support rod is rotatably connected to the rotating part of the pipe through the rotating seat.

[0009] Furthermore, The edges of the metal cover are fixedly connected by welding or riveting.

[0010] Furthermore, The bearing plate is fixed to the support rod by bolts or welding, and the bearing plate is reinforced to the wall by angle steel or connecting plate.

[0011] Furthermore, The bottom end of the limiting post is provided with a spherical end, and the bottom of the arc-shaped positioning groove is provided with an arc-shaped groove that mates with the spherical end.

[0012] The beneficial effects of this utility model are: 1. The flue gas duct is connected to the fixed part and the rotating part of the duct by a pin to form a rotation fulcrum. In conjunction with the sliding trajectory of the limit column along the arc-shaped positioning groove when the rotating cylinder in the rotating assembly rotates around the support rod, and the rotational cooperation between the rotating part of the duct and the rotating seat at the top of the support rod, a multi-dimensional linkage adjustment mechanism is constructed. This allows the hood to rotate flexibly according to the actual position requirements of the industrial furnace and be precisely adjusted to a position that matches the furnace body. This effectively solves the problem that traditional fixed hoods are difficult to adapt to different industrial furnaces or different working states of the same furnace body, and significantly enhances the equipment's adaptability to diverse working conditions.

[0013] 2. The intermediate fixing plate is connected to the rotating part of the pipe and the rotating cylinder through reinforcing rods to form a triangular reinforcement structure. Utilizing the geometric stability of the triangle, the force on the enclosure, pipe, and rotating components is evenly distributed to each connection node, preventing deformation or breakage of any single part due to excessive load. Simultaneously, the load-bearing plate is fixed to the support rod by bolts or welding and reinforced to the wall, further solidifying the equipment's installation foundation. This ensures the equipment remains structurally stable even under long-term exposure to flue gas impact, its own weight, and forces during adjustments, significantly reducing the risk of failure due to structural loosening and guaranteeing long-term operational safety. Attached Figure Description

[0014] The accompanying drawings, which are included to provide a further understanding of the embodiments of the present invention and form part of this application, do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 for Figure 1 Enlarged view of point A in the middle; Figure 3 This is a schematic diagram of the load-bearing plate structure; Figure 4 This is a schematic diagram of the cross-section of the bearing plate; Figure 5 This is a schematic diagram of the rotating cylinder structure.

[0015] The attached diagram shows the markings and corresponding component names: 1-Flue gas duct, 10-Dual duct fixing part, 11-Dual duct rotating part, 2-Hood body, 20-Metal cover plate, 21-Cover, 3-Intermediate fixing plate, 4-Support rod, 5-Rotating assembly, 50-Bearing plate, 51-Arc-shaped positioning groove, 510-Arc-shaped groove, 52-Rotating cylinder, 53-Limiting post, 530-Spherical end, 6-Reinforcing rod. Detailed Implementation

[0016] The present invention will be further described in detail below with reference to the embodiments and accompanying drawings, but the implementation of the present invention is not limited thereto.

[0017] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inner", "outer", "front", "rear", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. 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.

[0018] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "have," "install," "connect," and "connect" 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 based on the specific circumstances. Example

[0019] See Figures 1 to 5 : An adjustable positioning flue gas recovery hood includes a flue gas duct 1, a hood body 2, an intermediate fixing plate 3, a support rod 4, and a rotating assembly 5; the flue gas duct 1 includes a duct fixing part 10 fixed to the wall and a duct rotating part 11 movably connected to the end of the duct fixing part 10 via a pin, the duct rotating part 11 being movably connected to the support rod 4 below the connection point with the duct fixing part 10, and the support rod 4 being vertically fixed to the ground; The rotating assembly 5 includes a support plate 50, a positioning groove, a rotating cylinder 52, and a limiting post 53. The support plate 50 is fixed on the support rod 4 and connected to the wall. An arc-shaped positioning groove 51 is provided on the upper surface of the support plate 50. The rotating cylinder 52 is movably sleeved on the support rod 4 and movably connected to the support plate 50. The limiting post 53, which is vertically inserted into the positioning groove, is provided below the rotating cylinder 52. The intermediate fixing plate 3 is connected to the rotating part of the pipe 11 by the reinforcing rod 6 to form a triangular reinforcing structure. The intermediate fixing plate 3 is also fixedly connected to the rotating cylinder 52 by the reinforcing rod 6.

[0020] Furthermore, The pipe fixing part 10 is provided with a pin hole at its end, and the pipe rotating part 11 is provided with a slot that mates with the pin hole at the corresponding position. The pin passes through the pin hole and the slot to realize the movable connection between the pipe fixing part 10 and the pipe rotating part 11.

[0021] The precise fit between the pin hole and the slot provides a fulcrum for the rotating part 11 of the pipe to rotate around the pin. This ensures the reliability of the connection between the pipe fixing part 10 and the rotating part, preventing leakage caused by loose connection during flue gas transportation. It also allows the rotating part 11 of the pipe to rotate flexibly, meeting the needs of the cover 2 to adjust its position with rotation. This achieves a balance between connection stability and rotational flexibility.

[0022] Furthermore, The other end of the pipe rotating part 11 is connected to the intermediate fixing plate 3. The connection between the intermediate fixing plate 3 and the pipe rotating part 11 is provided with a through hole that communicates with the internal pipe of the pipe rotating part 11. The lower surface of the intermediate fixing plate 3 is connected to the cover 2.

[0023] Furthermore, The cover 2 includes stacked metal cover plates 20, with a flow channel formed between the metal cover plates 20 and a cover 21 provided above the flow channel. The cover 21 is connected to the through hole, and the bottom opening contour of the cover 2 is adapted to the upper contour of the industrial furnace.

[0024] The stacked metal cover 20 enhances the structural strength of the cover 2 and can withstand the high-temperature environment around the industrial furnace; the guide channel can guide the flue gas to flow in a directional manner to the cover 21, reducing the spread of flue gas; the connection between the cover 21 and the through hole ensures that the flue gas enters the pipeline efficiently; and the bottom opening is adapted to the outline of the industrial furnace, minimizing the gap for flue gas escape and significantly improving the flue gas collection efficiency.

[0025] Furthermore, A rotating seat is provided at the connection between the pipe rotating part 11 and the support rod 4, and the top end of the support rod 4 is rotatably connected to the pipe rotating part 11 through the rotating seat.

[0026] The rotating seat transforms the connection between the pipe rotating part 11 and the support rod 4 into a rotatable structure. This allows the support rod 4 to provide stable support for the pipe rotating part 11, sharing the weight of the cover 2 and the pipe. It also reduces the frictional resistance when the two rotate relative to each other, making the rotation of the pipe rotating part 11 smoother, avoiding component wear caused by rigid connection, and extending the service life of the equipment.

[0027] Furthermore, The edges of the metal cover plate 20 are fixedly connected by welding or riveting.

[0028] The welding or riveting fixing method can ensure that the metal cover plates 20 are tightly connected and not easily loosened under the long-term impact of high temperature flue gas. This not only ensures the sealing of the flow channel (preventing flue gas from leaking from the gaps between the plates), but also enhances the overall rigidity of the cover 2, avoids the effect of flue gas collection due to deformation of the cover 2, and improves the durability of the cover 2.

[0029] Furthermore, The bearing plate 50 is fixed to the support rod 4 by bolts or welding, and the bearing plate 50 is reinforced and connected to the wall by angle steel or connecting plate.

[0030] Bolts or welding ensure a firm connection between the bearing plate 50 and the support rod 4, providing a stable installation foundation for the rotating assembly 5. The reinforcement with angle steel or connecting plates further enhances the connection strength between the bearing plate 50 and the wall, disperses the force on the bearing plate 50, and prevents the bearing plate 50 from loosening or deforming due to vibration during the operation of the rotating assembly 5, thus ensuring the stable operation of the rotating assembly 5.

[0031] Furthermore, The bottom end of the limiting post 53 is provided with a spherical end 530, and the bottom of the arc-shaped positioning groove 51 is provided with an arc-shaped groove 510 that cooperates with the spherical end 530.

[0032] The combination of the spherical end 530 and the arc-shaped groove 510 significantly reduces the frictional resistance when the limiting post 53 slides in the positioning groove, making the rotation of the rotating cylinder 52 smoother. At the same time, the arc-shaped structure guides the limiting post 53, ensuring that it moves stably along the positioning groove trajectory, avoiding deviation or jamming during rotation, ensuring the accuracy of the adjustment position of the rotating component 5, and ensuring that when the cover 2 is needed, the cover 2 is just above the furnace when the limiting post 53 slides into the arc-shaped positioning groove 51 at one end.

[0033] The method of using this utility model is as follows: In use, the position of the cover 2 is adjusted by rotating component 5 according to the specific location or operation requirements of the industrial furnace. When the cover 2 is pushed with the push rod, the intermediate fixing plate 3 connected to the cover 2 will drive the rotating cylinder 52 to rotate around the support rod 4. At this time, the limiting post 53 below the rotating cylinder 52 slides along the arc-shaped trajectory in the arc-shaped positioning groove 51 of the bearing plate 50 (the cooperation between the spherical end 530 and the arc-shaped groove 510 ensures smooth sliding and no deviation). At the same time, the pipe rotating part 11 rotates with the pin connected to the pipe fixing part 10 as the fulcrum, and it forms a rotational cooperation with the rotating seat at the top of the support rod 4, so that the whole adjustment process is stable and without jamming, until the bottom opening of the cover 2 is precisely matched with the upper contour of the industrial furnace. The mechanical structure ensures stability and flexibility through multiple linkages: the triangular reinforcing structure (the reinforcing rod 6 between the intermediate fixed plate 3 and the rotating part 11 and the rotating cylinder 52) enhances the overall rigidity, preventing component deformation during adjustment or operation; the pin connection between the pipe fixed part 10 and the rotating part, and the rotational engagement of the rotating seat, provide a reliable fulcrum for the adjustment of the hood 2; the reinforced connection between the bearing plate 50 and the wall ensures the stability of the rotating assembly 5 during operation. In the flue gas recovery path, the flue gas generated by the industrial furnace is collected by the hood 2, then guided directionally to the cover 21 through the guide channel between the metal hood plates 20, and then enters the rotating part 11 through the through hole of the intermediate fixed plate 3, and finally is transported to the subsequent treatment system by the pipe fixed part 10 fixed to the wall, achieving efficient recovery.

[0034] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. An adjustable positioning flue gas recovery hood, characterized in that, It includes a flue gas duct (1), a cover (2), an intermediate fixing plate (3), a support rod (4), and a rotating assembly (5); the flue gas duct (1) includes a pipe fixing part (10) fixed to the wall and a pipe rotating part (11) movably connected to the end of the pipe fixing part (10) by a pin. The pipe rotating part (11) is movably connected to the support rod (4) below the connection with the pipe fixing part (10). The support rod (4) is vertically fixed to the ground. The rotating assembly (5) includes a bearing plate (50), a positioning groove, a rotating cylinder (52), and a limiting post (53). The bearing plate (50) is fixed on the support rod (4) and connected to the wall. An arc-shaped positioning groove (51) is provided on the upper surface of the bearing plate (50). The rotating cylinder (52) is movably sleeved on the support rod (4) and movably connected to the bearing plate (50). The limiting post (53) is provided below the rotating cylinder (52) and is vertically inserted into the positioning groove. The intermediate fixing plate (3) and the rotating part of the pipe (11) are connected by a reinforcing rod (6) to form a triangular reinforcing structure. The intermediate fixing plate (3) is also fixedly connected to the rotating cylinder (52) by the reinforcing rod (6).

2. The adjustable positioning flue gas recovery hood according to claim 1, characterized in that, The pipe fixing part (10) is provided with a pin hole at its end, and the pipe rotating part (11) is provided with a slot that cooperates with the pin hole at the corresponding position. The pin passes through the pin hole and the slot to realize the movable connection between the pipe fixing part (10) and the pipe rotating part (11).

3. The adjustable positioning flue gas recovery hood according to claim 1, characterized in that, The other end of the pipe rotating part (11) is connected to the intermediate fixing plate (3). The connection between the intermediate fixing plate (3) and the pipe rotating part (11) is provided with a through hole that communicates with the pipe inside the pipe rotating part (11). The lower surface of the intermediate fixing plate (3) is connected to the cover (2).

4. The adjustable positioning flue gas recovery hood according to claim 3, characterized in that, The cover (2) includes stacked metal cover plates (20), a flow channel is formed between the metal cover plates (20), and a cover (21) is provided above the flow channel. The cover (21) is connected to the through hole, and the bottom opening contour of the cover (2) is adapted to the upper contour of the industrial furnace.

5. The adjustable positioning flue gas recovery hood according to claim 1, characterized in that, A rotating seat is provided at the connection between the pipe rotating part (11) and the support rod (4), and the top end of the support rod (4) is rotatably connected to the pipe rotating part (11) through the rotating seat.

6. The adjustable positioning flue gas recovery hood according to claim 1, characterized in that, The edges of the metal cover (20) are fixedly connected by welding or riveting.

7. The adjustable positioning flue gas recovery hood according to claim 1, characterized in that, The bearing plate (50) is fixed to the support rod (4) by bolts or welding, and the bearing plate (50) is reinforced to the wall by angle steel or connecting plate.

8. The adjustable positioning flue gas recovery hood according to claim 1, characterized in that, The bottom end of the limiting post (53) is provided with a spherical end (530), and the bottom of the arc-shaped positioning groove (51) is provided with an arc-shaped groove (510) that cooperates with the spherical end (530).

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