Gas-collecting hood of flue gas purification system

Abstract

The utility model discloses a flue gas purification system gas collecting hood which comprises a conical hood, a supporting frame is welded to the top of the conical hood, an exhaust fan is placed on the supporting frame, an inserting groove is formed in the side wall of the exhaust fan, a connecting square pipe is installed on the top of the conical hood through a longitudinal positioning assembly, and a limiting groove is formed in the side wall of the top of the conical hood. A support is welded to the inclined face of the conical cover, an elastic piece is installed on the outer wall of one side of the support, a movable base is fixed to one end of the elastic piece, and a first insertion plate and a second insertion plate are welded to the outer wall of one side of the movable base. Rapid alignment of the conical cover and the connecting square pipe is achieved through the longitudinal positioning assembly, integrated fixing of the conical cover, the connecting square pipe and the exhaust fan is achieved by combining synchronous locking of the elastic piece, the first inserting plate and the second inserting plate, the assembly can be rapidly separated only by operating a lever labor-saving structure in the disassembly and assembly process, tool assistance is not needed, and the disassembly and assembly efficiency is improved. The method is suitable for high-frequency maintenance scenes.

Description

Technical Field

[0001] This utility model relates to the field of gas collection hood technology, and in particular to a gas collection hood for a flue gas purification system. Background Technology

[0002] In industrial production processes, especially in industries such as metallurgy, chemical engineering, and welding, a large amount of harmful fumes are often generated. These fumes not only pollute the environment but may also seriously endanger the health of operators. Therefore, the application of fume purification systems is crucial. As a key component of fume purification systems, the performance of the fume collection hood directly affects the collection efficiency and purification effect of the fumes.

[0003] A search revealed a Chinese patent application with patent number 202122717795.6, which discloses a high-efficiency flue gas collection hood. This high-efficiency flue gas collection hood includes a vertical collection body. The lower end of the vertical collection body has a smoke inlet, and the upper end of the vertical collection body has a detachable top cover. The vertical collection body has a lower smoke chamber and an upper smoke chamber inside, and the cross-sectional area of ​​the lower smoke chamber is larger than that of the upper smoke chamber. The lower smoke chamber has a top wall that slopes towards the upper smoke chamber, and one end of the upper smoke chamber has a smoke outlet. The top cover is detachably connected to the collection body by fixing bolts.

[0004] The high-efficiency flue gas collection hood in the aforementioned patent has the following shortcomings: the top cover is fixed to the hood body by fixing bolts, which makes the disassembly and assembly process cumbersome, time-consuming and labor-intensive, and inconvenient to operate. Utility Model Content

[0005] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a flue gas purification system gas collection hood.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A flue gas purification system hood includes a conical hood. A support frame is welded to the top of the conical hood, and an exhaust fan is placed on the support frame. The exhaust fan has a slot on its side wall. A connecting square tube is installed on the top of the conical hood via a longitudinal positioning component. A limit groove is provided on the side wall of the top of the conical hood, and an insertion hole is provided on the side wall of the connecting square tube. A bracket is welded to the inclined surface of the conical hood, and an elastic element is installed on one side of the outer wall of the bracket. A movable seat is fixed to one end of the elastic element, and a first insertion plate and a second insertion plate are welded to one side of the outer wall of the movable seat. A rocker is movably connected to the inner wall of the bracket, and a sliding plate is movably connected to one end of the rocker. The end of the sliding plate away from the rocker is movably connected to the inner wall of the movable seat.

[0008] As a further embodiment of this utility model: the longitudinal positioning component includes a positioning post and a positioning hole, the positioning hole is opened at the bottom of the connecting square tube, and the positioning post is welded to the top of the conical cover, and the positioning post and the positioning hole are used in conjunction.

[0009] As a further embodiment of this utility model: the elastic element includes a sleeve and a T-shaped rod. The sleeve is fixed to the inner wall of one side of the bracket, and the T-shaped rod is movably connected to a through hole opened at one end of the sleeve. The end of the T-shaped rod away from the sleeve is fixedly connected to the movable seat.

[0010] As a further improvement of this utility model: a spring is sleeved on the outer wall of the T-shaped rod, and the two ends of the spring are respectively fixed to the inner wall of one side of the sleeve and the inner wall of one side of the T-shaped rod.

[0011] As a further embodiment of this utility model: a support ring is fixed to the inner wall of the connecting square tube, and a rotating shaft is movably connected to both sides of the connecting square tube, and a baffle is fixed to the outer wall of the rotating shaft, and a torsion spring is installed between the outer circumferential wall of the rotating shaft and the side wall of the connecting square tube.

[0012] As a further improvement of this utility model: a corrugated telescopic tube is fixed to the top of the connecting square tube.

[0013] As a further improvement of this utility model, the outer wall of the rocker is fitted with a rubber sleeve.

[0014] As a further embodiment of this utility model: the second insert plate and the limiting groove are used together, and the first insert plate and the insertion hole are used together with the slot.

[0015] Compared with the prior art, the present invention provides a flue gas purification system gas collection hood, which has the following beneficial effects:

[0016] 1. The conical cover and connecting square tube are quickly aligned by the longitudinal positioning component. Combined with the synchronous locking of the elastic element and the first and second insert plates, the conical cover, connecting square tube and exhaust fan are fixed in one piece. The components can be quickly separated by operating the lever-based force-saving structure during disassembly and assembly without the need for tools. It is suitable for high-frequency maintenance scenarios.

[0017] 2. When the exhaust fan starts, the wind power drives the baffle to rotate along the rotating axis, forming a dynamic gap channel for efficient exhaust of flue gas. The rebound force of the torsion spring makes the baffle return to a tight fit with the support ring. The arc-shaped end design enhances the sealing performance, which can effectively block the backflow of flue gas and prevent the flue gas from leaking out and polluting the environment when the purification system is shut down.

[0018] 3. The lever structure uses the lever arm amplification principle to convert the operator's pressing force into the compressive force of the elastic element, reducing labor intensity. The linear sliding design of the T-shaped rod and the sleeve restricts the spring deformation path to the axial direction, avoiding offset that could lead to locking failure.

[0019] The parts of this device not covered herein are the same as or can be implemented using existing technologies. This utility model has a simple structure and is easy to operate. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the gas collection hood of the flue gas purification system proposed in this utility model;

[0021] Figure 2 This is a schematic diagram of the bottom structure of the gas collection hood of a flue gas purification system proposed in this utility model;

[0022] Figure 3 This is an exploded structural diagram of a flue gas purification system gas collection hood proposed in this utility model;

[0023] Figure 4 This is a schematic diagram of the anti-backflow component structure of the flue gas purification system gas collection hood proposed in this utility model;

[0024] Figure 5 This is a schematic diagram of the mounting structure of the fixing component of the flue gas purification system gas collection hood proposed in this utility model;

[0025] Figure 6 This is a schematic diagram of the exhaust fan installation structure of the gas collection hood of a flue gas purification system proposed in this utility model;

[0026] Figure 7 This is a schematic diagram of the main structure of the fixing component of the flue gas purification system gas collection hood proposed in this utility model.

[0027] In the diagram: 1. Conical cover; 2. Connecting square tube; 3. Corrugated telescopic tube; 4. Support frame; 5. Exhaust fan; 6. Insertion hole; 7. Positioning post; 8. Torsion spring; 9. Positioning hole; 10. Support ring; 11. Rotating shaft; 12. Baffle; 13. Sleeve; 14. Rubber sleeve; 15. Bracket; 16. Rocker; 17. Slide plate; 18. Insert plate one; 19. Moving seat; 20. Insert plate two; 21. T-shaped rod; 22. Spring; 23. Limiting groove; 24. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0029] Example 1

[0030] A flue gas purification system gas collection hood, such as Figures 1 to 7As shown, the device includes a conical cover 1, a support frame 4 welded to the top of the conical cover 1, an exhaust fan 5 placed on the support frame 4, and a slot 13 opened on the side wall of the exhaust fan 5. A connecting square tube 2 is installed on the top of the conical cover 1 through a longitudinal positioning component, and a limiting groove 24 is opened on the side wall of the top of the conical cover 1. An insertion hole 6 is opened on the side wall of the connecting square tube 2. A bracket 16 is welded to the inclined surface of the conical cover 1, and an elastic element is installed on one side of the outer wall of the bracket 16. A movable seat 20 is fixed to one end of the elastic element. An insertion plate 19 and an insertion plate 21 are welded to one side of the outer wall of the movable seat 20. The insertion plate 21 and the limiting groove 24 are used together. The insertion plate 19 and the insertion hole 6 are used together with the slot 13. A rocker 17 is rotatably connected to the inner wall of the bracket 16, and a sliding plate 18 is slidably connected to one end of the rocker 17. The end of the sliding plate 18 away from the rocker 17 is rotatably connected to the inner wall of the movable seat 20.

[0031] When it is necessary to assemble the conical cover 1, the connecting square tube 2 and the exhaust fan 5, first place the exhaust fan 5 on the support frame 4, and then use the longitudinal positioning component to position the connecting square tube 2 and the conical cover 1 in the longitudinal direction. During this process, the elastic element remains in a contracted state. After positioning, the elastic element is reset by its rebound force. During the reset process, the insert plate 19 is inserted into the insertion hole 6 and the slot 13 in sequence, and the insert plate 21 is inserted into the limiting groove 24, thereby simultaneously fixing the conical cover 1, the connecting square tube 2 and the exhaust fan 5. When the exhaust fan 5 malfunctions and needs to be removed for repair, or when it is necessary to disassemble and assemble the conical cover 1 and the connecting square tube 2, the disassembly and assembly efficiency can be improved.

[0032] Meanwhile, a lever structure is formed between the rocker 17, the slide 18 and the movable seat 20. When the elastic force of the elastic element is large, the operator holds one end of the rocker 17 and rotates the rocker 17. The lever principle can save effort and make it easier to use a smaller force to achieve the deformation of the elastic element, thus reducing the physical exertion of the operator.

[0033] When the exhaust fan 5 is started, it can exhaust gas, which is drawn into the connecting square tube 2 through the conical cover 1 to achieve gas collection. The bottom of the connecting square tube 2 is fixed with a sealing gasket to improve the sealing performance and prevent the smoke from overflowing.

[0034] The longitudinal positioning component includes a positioning post 7 and a positioning hole 9. The positioning hole 9 is opened at the bottom of the connecting square tube 2, and the positioning post 7 is welded to the top of the conical cover 1. The positioning post 7 and the positioning hole 9 are used in conjunction.

[0035] During positioning, the positioning hole 9 on the connecting square tube 2 is inserted into the positioning post 7 on the conical cover 1 to position the conical cover 1 and the connecting square tube 2 longitudinally, ensuring that the two are aligned longitudinally.

[0036] The elastic element includes a sleeve 14 and a T-shaped rod 22. The sleeve 14 is fixed to the inner wall of one side of the bracket 16 by screws, and the T-shaped rod 22 is slidably connected to a through hole opened at one end of the sleeve 14. The end of the T-shaped rod 22 away from the sleeve 14 is fixedly connected to the movable seat 20. A spring 23 is sleeved on the outer wall of the T-shaped rod 22, and the two ends of the spring 23 are respectively fixed to the inner wall of one side of the sleeve 14 and the inner wall of one side of the T-shaped rod 22.

[0037] The T-shaped rod 22 and the sleeve 14 can be used to guide the deformation path of the spring 23, and the spring force of the spring 23 can be used to fix the conical cover 1, the connecting square tube 2 and the exhaust fan 5.

[0038] The top of the connecting square tube 2 is fixed with a corrugated expansion tube 3;

[0039] The flue gas can be guided by the corrugated expansion tube 3, which has a certain degree of elasticity and extensibility, and can guide the movement path of the flue gas.

[0040] The outer wall of the rocker 17 is fitted with a rubber sleeve 15;

[0041] The rubber sleeve 15 increases the friction of the hand when holding the rocker 17.

[0042] Working principle: The exhaust fan 5 is placed on the support frame 4 at the top of the conical cover 1. The positioning hole 9 at the bottom of the connecting square tube 2 is aligned with the positioning post 7 at the top of the conical cover 1 and inserted longitudinally to achieve initial alignment and positioning of the conical cover 1 and the connecting square tube 2. In the initial state, the elastic element on one side of the bracket 16 is in a contracted state, and the moving seat 20 is located in the initial position close to the bracket 16. After the longitudinal positioning is completed, the elastic element is released, and the spring 23 rebounds to push the T-shaped rod 22 to slide in the sleeve 14, thereby moving the moving seat 20. Moving towards the center of the conical cover 1, the moving seat 20 synchronously drives the insert plate 19 and the insert plate 21. The insert plate 19 is inserted into the insertion hole 6 on the side wall of the connecting square tube 2 and the slot 13 on the side wall of the exhaust fan 5 in sequence, realizing the longitudinal locking of the connecting square tube 2 and the exhaust fan 5. The insert plate 21 is inserted into the limiting groove 24 on the top side wall of the conical cover 1, realizing the lateral limiting of the conical cover 1 and the connecting square tube 2. Finally, the conical cover 1, the connecting square tube 2 and the exhaust fan 5 are fixed in three dimensions through the cooperation of the insert plates and the slots. This forms a stable air collection channel. When the exhaust fan 5 malfunctions and needs repair or when the conical cover 1 and connecting square tube 2 need to be disassembled, the operator holds one end of the rubber sleeve 15 on the outer wall of the rocker arm 17 and presses down on the free end of the rocker arm 17. The rocker arm 17 rotates around the inner wall of the bracket 16, and the other end pushes the moving seat 20 outward through the sliding plate 18, compressing the spring 23 and causing the first insert plate 19 and the second insert plate 21 to exit the insertion hole 6, slot 13 and limit groove 24. The lever structure, through the lever arm amplification principle, amplifies the operator's... The smaller pressing force is converted into a larger compressive force on the elastic element, reducing physical exertion. After the insert plate is completely removed, the connecting square tube 2 can be lifted longitudinally along the positioning post 7. The exhaust fan 5 can be removed from the support frame 4 for quick disassembly and assembly. When exhausting, the exhaust fan 5 operates to generate negative pressure. The flue gas is drawn in through the flared mouth of the conical hood 1 and gathers at the top along the inner wall of the conical hood 1. The flue gas is output through the corrugated telescopic tube 3 fixed at the top of the connecting square tube 2. The corrugated telescopic tube 3 adapts to different installation space requirements through its extensibility and flexibility.

[0043] Example 2

[0044] A flue gas purification system hood, to prevent flue gas backflow, such as... Figures 1 to 7 As shown, this embodiment makes the following additions based on embodiment 1: the inner wall of the connecting square tube 2 is fixed with a support ring 10 by screws, and the two sides of the connecting square tube 2 are rotatably connected with a rotating shaft 11, and the outer wall of the rotating shaft 11 is fixed with a baffle 12, and a torsion spring 8 is installed between the outer circumference of the rotating shaft 11 and the side wall of the connecting square tube 2.

[0045] In the initial state, the bottom of the baffle 12 and the top of the support ring 10 are in contact. Both ends of the baffle 12 are arc-shaped structures. When the exhaust fan 5 starts to exhaust, the wind force applies pressure to the bottom of the baffle 12, causing the baffle 12 and the rotating shaft 11 to rotate along the connecting square tube 2 under the action of the wind force, so that the flue gas is discharged through the gap between the baffle 12 and the connecting square tube 2. When the exhaust fan 5 stops, in order to avoid the backflow of flue gas, the rebound force of the torsion spring 8 is used to make the baffle 12 rotate again to be in contact with the top of the support ring 10 after the exhaust fan 5 stops, thus preventing the backflow of flue gas.

[0046] 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 the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A fume cleaning system hood comprising a conical hood (1), characterized in that The conical cover (1) top is welded with support frame (4), and support frame (4) is placed with exhaust fan (5), and the side wall of exhaust fan (5) is provided with slot (13), the top of conical cover (1) is installed with connecting square tube (2) through longitudinal positioning assembly, and the side wall of conical cover (1) top is provided with limiting groove (24), and the side wall of connecting square tube (2) is provided with insertion hole (6), the inclined surface of conical cover (1) is welded with support (16), and the outer wall of one side of support (16) is installed with elastic element, and one end of elastic element is fixed with moving seat (20), and the outer wall of one side of moving seat (20) is welded with plug-in board one (19) and plug-in board two (21) respectively, the inner wall of support (16) is movably connected with warped plate (17), and one end of warped plate (17) is movably connected with sliding plate (18), and the end of sliding plate (18) away from warped plate (17) is movably connected with the inner wall of moving seat (20).

2. A flue gas cleaning system hood according to claim 1, characterized in that The longitudinal positioning assembly comprises positioning column (7) and positioning hole (9), the positioning hole (9) is provided in the bottom of connecting square tube (2), and the positioning column (7) is welded on the top of conical cover (1), and the positioning column (7) and the positioning hole (9) are used in cooperation.

3. A flue gas cleaning system hood according to claim 2, characterized in that The elastic element comprises sleeve (14) and T-shaped rod (22), the sleeve (14) is fixed to the inner wall of one side of support (16), and the T-shaped rod (22) is movably connected to the through hole formed in one end of sleeve (14), and the end of T-shaped rod (22) away from sleeve (14) is fixedly connected with moving seat (20).

4. A flue gas cleaning system hood according to claim 3, characterized in that The outer wall of T-shaped rod (22) is sleeved with spring (23), and the both ends of spring (23) are fixed to the inner wall of one side of sleeve (14) and the inner wall of one side of T-shaped rod (22) respectively.

5. A flue gas cleaning system hood according to claim 4, characterized in that The inner wall of connecting square tube (2) is fixed with support ring (10), and the both sides of connecting square tube (2) are movably connected with rotating shaft (11), and the outer wall of rotating shaft (11) is fixed with baffle (12), and the circumferential outer wall of rotating shaft (11) and the side wall of connecting square tube (2) are provided with torsional spring (8).

6. A flue gas cleaning system hood according to claim 5, characterized in that The top of connecting square tube (2) is fixed with corrugated expansion pipe (3).

7. A flue gas cleaning system hood according to claim 6, characterized in that The outer wall of warped plate (17) is sleeved with rubber sleeve (15).

8. A flue gas cleaning system hood according to claim 7, characterized in that Plug-in board two (21) and limiting groove (24) are used in cooperation, plug-in board one (19) and insertion hole (6) are used in cooperation with slot (13).

Images