Foldable waste gas collecting cover
By designing a foldable exhaust gas collection hood and using an auxiliary adjustment mechanism to adjust the position of the expansion hood, the problem of the existing exhaust gas collection hood's inability to adjust its area is solved, improving the flexibility of use and the convenience of maintenance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG HUANFA INSPECTION & TESTING CO LTD
- Filing Date
- 2025-04-18
- Publication Date
- 2026-05-15
AI Technical Summary
The existing exhaust gas collection hoods cannot adjust their collection area and cannot dynamically adjust the coverage range according to the working space. If local damage occurs, the entire hood needs to be repaired or replaced, resulting in high maintenance costs.
A foldable exhaust gas collection hood was designed, employing an auxiliary adjustment mechanism including a rectangular connecting plate, a locking block, a rectangular fixing plate, and a return spring. The position of the extended hood is adjusted by sliding and rotating. The surface of the extended hood is provided with a movable slot and a locking groove, and the locking block slides within the slot to achieve the unfolding and folding of the hood.
It enables flexible adjustment of the exhaust gas collection hood, expands the working range, facilitates transportation and maintenance, and reduces maintenance costs.
Smart Images
Figure CN224237828U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of waste gas collection technology, and in particular to a foldable waste gas collection hood. Background Technology
[0002] An exhaust gas collection hood is a device used to collect and treat exhaust gases. It is mainly used to guide dust and gaseous pollutants from the source into the purification system to prevent them from spreading into the production workshop and the atmosphere, causing pollution. The design and installation of the exhaust gas collection hood need to ensure that it is as close as possible to the pollution source to reduce the diffusion range of the exhaust gas, improve collection efficiency, and prevent it from spreading into the production workshop and the atmosphere, causing pollution. Its performance has a direct impact on the technical and economic indicators of the purification system. Due to the different structures of the pollution source equipment and the different production operation processes, there are various forms of exhaust hoods.
[0003] Existing exhaust gas collection hoods are usually a single unit with an adjustable collection area. They cannot dynamically adjust the coverage area according to the working space. If local damage occurs, the entire hood needs to be repaired or replaced, resulting in high maintenance costs. Therefore, a foldable exhaust gas collection hood is needed. Utility Model Content
[0004] The purpose of this utility model is to solve at least one of the technical problems existing in the prior art, and to provide a foldable exhaust gas collection hood that can solve the problems that the collection area of the existing exhaust gas collection hood cannot be adjusted, the coverage range cannot be dynamically adjusted according to the working space, and the maintenance cost is high if partial damage occurs and the whole structure needs to be repaired or replaced.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a foldable exhaust gas collection hood, comprising an exhaust gas collection hood and an auxiliary adjustment mechanism. A first expansion hood and a second expansion hood are rotatably disposed on both sides of the exhaust gas collection hood. The auxiliary adjustment mechanism includes a rectangular connecting plate, a locking block B, a rectangular fixing plate, a locking block A, a rectangular adjusting plate, a return spring, a limiting block, and a limiting groove. The rectangular connecting plate is slidably connected to the surface of the second expansion hood, and the rectangular fixing plate is slidably connected to the surface of the first expansion hood. Locking block B is fixedly connected to the surface of the rectangular connecting plate, and locking block A is fixedly connected to the surface of the rectangular fixing plate. The rectangular adjusting plate is fixedly connected to one end of the rectangular fixing plate, and the rectangular connecting plate is slidably connected inside the rectangular adjusting plate. The return spring is fixedly connected inside the rectangular adjusting plate, with one end of the return spring near the rectangular connecting plate fixedly connected to the rectangular connecting plate. Multiple limiting blocks are fixedly connected to the surface of the rectangular connecting plate, and the number of limiting grooves is the same as the number of limiting blocks, all of which are formed inside the rectangular adjusting plate. Each limiting block is slidably connected inside its corresponding limiting groove.
[0006] Preferably, the surface of the first expansion cover has a movable slot A and a slot A, the movable slot A and the slot A are connected, and the block A is slidably connected inside the movable slot A and the slot A.
[0007] Preferably, the surface of the second expansion cover has a movable slot B, a movable slot C, and a slot B, and the movable slot C is connected to the movable slot B and the slot B, respectively.
[0008] Preferably, the card block B is adapted to the movable slot B, the movable slot C and the card slot B, and the card block B can slide inside the movable slot B, the movable slot C and the card slot B.
[0009] Preferably, the surface of the exhaust gas collection hood is fixedly connected to multiple mounting components, each mounting component is rotatably connected to a rotating rod, and each rotating rod is fixedly connected to a corresponding first expansion hood or second expansion hood.
[0010] Preferably, an exhaust pipe is fixedly connected to the top of the exhaust gas collection hood, an adsorption plate is fixedly connected to the inside of the exhaust pipe, and a filter plate is fixedly connected to the inside of the exhaust pipe.
[0011] Preferably, the bottom of both the first and second expansion covers is fixedly connected to a fixing block, and each fixing block is snapped into the surface of the exhaust gas collection cover.
[0012] Compared with the prior art, the beneficial effects of this utility model are:
[0013] 1. This foldable exhaust gas collection hood, through the setting of an auxiliary adjustment mechanism, allows for flexible adjustment of the positions of the first and second expansion hoods, thereby expanding the working range of the device. It can be folded, making operation more convenient during transportation and maintenance. It is flexible in use and has a wide range of applications. It solves the problems of existing exhaust gas collection hoods, such as the inability to adjust the collection area, the inability to dynamically adjust the coverage range according to the working space, and the need for overall repair or replacement if partial damage occurs, resulting in high maintenance costs. Attached Figure Description
[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments:
[0015] Figure 1 This is a schematic diagram of the main body of this utility model;
[0016] Figure 2 This is a schematic diagram of the filter plate of this utility model;
[0017] Figure 3 For the present utility model Figure 1 Schematic diagram at point A in the middle;
[0018] Figure 4 For the present utility model Figure 1 Schematic diagram at point B in the middle;
[0019] Figure 5 For the present utility model Figure 2 Diagram at point C;
[0020] Figure 6 This is a schematic diagram of the working state of this utility model;
[0021] Figure 7 This is a schematic diagram of the rectangular adjustment plate of this utility model.
[0022] Reference numerals in the attached drawings: 1. Exhaust gas collection hood; 2. Exhaust pipe; 3. First expansion hood; 4. Second expansion hood; 5. Adsorption plate; 6. Filter plate; 7. Mounting component; 8. Rotating rod; 9. Moving slot A; 10. Slot A; 11. Moving slot B; 12. Moving slot C; 13. Slot B; 14. Rectangular connecting plate; 15. Locking block B; 16. Rectangular fixing plate; 17. Locking block A; 18. Rectangular adjusting plate; 19. Return spring; 20. Limiting block; 21. Limiting groove; 22. Fixing block. Detailed Implementation
[0023] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.
[0024] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. 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.
[0025] In the description of this utility model, terms such as greater than, less than, and exceeding are understood to exclude the stated number, while terms such as above, below, and within are understood to include the stated number. The use of terms like "first" and "second" is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the quantity or sequence of the indicated technical features.
[0026] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.
[0027] Please see Figure 1-7 This utility model provides a technical solution: a foldable exhaust gas collection hood, including an exhaust gas collection hood 1 and an auxiliary adjustment mechanism. A first expansion hood 3 and a second expansion hood 4 are rotatably mounted on both sides of the exhaust gas collection hood 1. The auxiliary adjustment mechanism includes a rectangular connecting plate 14, a locking block B15, a rectangular fixing plate 16, a locking block A17, a rectangular adjusting plate 18, a return spring 19, a limiting block 20, and a limiting groove 21. The rectangular connecting plate 14 is slidably connected to the surface of the second expansion hood 4, the rectangular fixing plate 16 is slidably connected to the surface of the first expansion hood 3, and the locking block B15 is fixedly connected to the surface of the rectangular connecting plate 14. A17 is fixedly connected to the surface of the rectangular fixed plate 16. The rectangular adjusting plate 18 is fixedly connected to one end of the rectangular fixed plate 16. The rectangular connecting plate 14 is slidably connected to the inside of the rectangular adjusting plate 18. The return spring 19 is fixedly connected to the inside of the rectangular adjusting plate 18. The end of the return spring 19 near the rectangular connecting plate 14 is fixedly connected to the rectangular connecting plate 14. There are multiple limiting blocks 20, all of which are fixedly connected to the surface of the rectangular connecting plate 14. The number of limiting grooves 21 is the same as that of the limiting blocks 20, and they are all opened inside the rectangular adjusting plate 18. Each limiting block 20 is slidably connected to the inside of the corresponding limiting groove 21.
[0028] Furthermore, the surface of the first expansion cover 3 has a movable slot A9 and a slot A10, which are connected to each other. A locking block A17 is slidably connected inside the movable slot A9 and the slot A10. The surface of the second expansion cover 4 has a movable slot B11, a movable slot C12, and a slot B13, which are connected to both the movable slot B11 and the slot B13. A locking block B15 is adapted to all three slots. The exhaust gas collection hood 1 can slide inside the movable slots B11, C12, and B13. Multiple mounting components 7 are fixedly connected to the surface of the exhaust gas collection hood 1. Each mounting component 7 is rotatably connected to a rotating rod 8. Each rotating rod 8 is fixedly connected to the corresponding first expansion hood 3 or second expansion hood 4. An exhaust pipe 2 is fixedly connected to the top of the exhaust gas collection hood 1. An adsorption plate 5 is fixedly connected to the inside of the exhaust pipe 2. A filter plate 6 is fixedly connected to the inside of the exhaust pipe 2. Fixing blocks 22 are fixedly connected to the bottom of the first expansion hood 3 and the second expansion hood 4. Each fixing block 22 is snapped into the surface of the exhaust gas collection hood 1.
[0029] Furthermore, in use, the device first moves the rectangular connecting plate 14 to slide it inside the rectangular adjusting plate 18, causing the locking block B15 to disengage from the locking slot B13. Then, the rectangular fixing plate 16 moves to disengage the locking block A17 from the locking slot A10. Next, the rectangular adjusting plate 18 moves downwards, causing the locking block A17 to slide inside the moving slot A9, and the locking block B15 to slide inside the moving slot C12, until the locking block B15 reaches the bottom of the moving slot B11 and the locking block A17 reaches the bottom of the moving slot A9. At this point, the first expansion cover 3 and the second expansion cover are moved. 4. Rotate the device on the surface of the exhaust gas collection hood 1 until it is in a horizontal state. The fixing blocks 22 on the first expansion hood 3 and the second expansion hood 4 are inserted into the interior of the exhaust gas collection hood 1, thereby expanding the collection range of the device. When resetting, lift the first expansion hood 3 and the second expansion hood 4 upwards to make them in a vertical position. Move the rectangular adjusting plate 18 upwards to drive the rectangular connecting plate 14 and the rectangular fixing plate 16 to move, so that the locking blocks B15 and A17 are respectively inserted into the slots A10 and B13. The state of the return spring 19 is used to limit the first expansion hood 3 and the second expansion hood 4.
[0030] Furthermore, the positions of the first expansion cover 3 and the second expansion cover 4 can be flexibly adjusted by the auxiliary adjustment mechanism, thereby expanding the working range of the device and enabling the device to be folded. This makes the operation more convenient during transportation and maintenance, and it is flexible in use and has a wide range of applications. It solves the problems of existing exhaust gas collection covers, such as the inability to adjust the collection area, the inability to dynamically adjust the coverage range according to the working space, the need for overall repair or replacement if partial damage occurs, and the high maintenance cost.
[0031] Structural Description: Exhaust Gas Collection Hood 1: A collection device for pollution sources in the flue gas purification system, which can introduce dust and gaseous pollution sources into the purification system;
[0032] Exhaust pipe 2: fixed to the top of exhaust gas collection hood 1 for the flow of exhaust gas;
[0033] First expansion cover 3: Rotatably connected to the surface of exhaust gas collection cover 1, and cooperates with second expansion cover 4 to increase the collection area of the device;
[0034] Second expansion cover 4: Rotatably connected to the surface of the first expansion cover 3, and cooperates with the first expansion cover 3 to increase the collection area of the device;
[0035] Adsorption plate 5: It is fixed inside the exhaust pipe 2 and is used to adsorb odors in the exhaust gas;
[0036] Filter plate 6: It is fixed inside the exhaust pipe 2 and is used to filter foreign objects in the exhaust gas;
[0037] Mounting component 7: It is fixed to the surface of the exhaust gas collection hood 1. There are multiple mounting components 7, which cooperate with the rotating rod 8 to realize the rotation of the first expansion hood 3 and the second expansion hood 4.
[0038] Movable slot A9: Formed on the surface of the first expansion cover 3, used to limit the movement of the card block A17;
[0039] Slot A10: It is formed on the surface of the first expansion cover 3 and communicates with the interior of the movable slot A9 to limit the position of the card block A17;
[0040] Movable slot B11: Formed on the surface of the second expansion cover 4, it works in conjunction with the movable slot C12 to limit the movement of the locking block B15;
[0041] Slot B13: It is formed on the surface of the second expansion cover 4 and is connected to the movable slot B11 and the movable slot C12. It is used to limit the position of the card block B15.
[0042] Rectangular connecting plate 14: slidably connected to the surface of the second expansion cover 4, used to restrict the rotation of the second expansion cover 4;
[0043] Block B15: It is fixed to the surface of the rectangular connecting plate 14 and slides inside the slot B13, the movable slot C12 and the movable slot B11. It restricts the movement of the rectangular connecting plate 14 to prevent the rectangular connecting plate 14 from detaching from the surface of the second expansion cover 4. It can also restrict the rotation of the second expansion cover 4 to prevent the second expansion cover 4 from rotating from the vertical direction to the horizontal direction.
[0044] Rectangular fixing plate 16: slidably connected to the surface of the first expansion cover 3, used to limit the rotation of the first expansion cover 3;
[0045] Block A17: It is fixed to the surface of the rectangular fixed plate 16 and slides inside the movable slot A9 and the slot A10. It restricts the movement of the rectangular fixed plate 16 to prevent the rectangular fixed plate 16 from detaching from the surface of the first expansion cover 3. It can also restrict the rotation of the first expansion cover 3 to prevent the first expansion cover 3 from rotating from the vertical direction to the horizontal direction.
[0046] Rectangular adjusting plate 18: It is fixed to the surface of rectangular fixed plate 16, and rectangular connecting plate 14 is slidably connected inside rectangular adjusting plate 18 for adjusting the position of rectangular connecting plate 14 and rectangular fixed plate 16.
[0047] Return spring 19: It is fixed inside the rectangular adjusting plate 18 and fixedly connected to the rectangular connecting plate 14 to limit the sliding of the rectangular connecting plate 14;
[0048] Limiting block 20: It is fixed to the surface of the rectangular connecting plate 14 and cooperates with the limiting groove 21 to limit the movement distance of the rectangular connecting plate 14;
[0049] Fixing block 22: It is fixed to the surface of the first expansion cover 3 and the second expansion cover 4, and snaps into the surface of the exhaust gas collection cover 1, for installing the first expansion cover 3 and the second expansion cover 4 on both sides of the exhaust gas collection cover 1.
[0050] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.
Claims
1. A foldable exhaust gas collection hood, characterized in that, include: The exhaust gas collection hood (1) has a first expansion hood (3) and a second expansion hood (4) rotatably installed on both sides of the exhaust gas collection hood (1); The auxiliary adjustment mechanism includes a rectangular connecting plate (14), a locking block B (15), a rectangular fixing plate (16), a locking block A (17), a rectangular adjusting plate (18), a return spring (19), a limiting block (20), and a limiting groove (21). The rectangular connecting plate (14) is slidably connected to the surface of the second expansion cover (4), the rectangular fixing plate (16) is slidably connected to the surface of the first expansion cover (3), the locking block B (15) is fixedly connected to the surface of the rectangular connecting plate (14), the locking block A (17) is fixedly connected to the surface of the rectangular fixing plate (16), and the rectangular adjusting plate (18) is fixedly connected to the surface of the first expansion cover (3). One end of the rectangular fixed plate (16) is slidably connected to the inside of the rectangular adjusting plate (18). The return spring (19) is fixedly connected to the inside of the rectangular adjusting plate (18). The end of the return spring (19) near the rectangular connecting plate (14) is fixedly connected to the rectangular connecting plate (14). There are multiple limit blocks (20) and they are all fixedly connected to the surface of the rectangular connecting plate (14). The number of limit grooves (21) is the same as that of the limit blocks (20) and they are all opened inside the rectangular adjusting plate (18). Each limit block (20) is slidably connected to the inside of the corresponding limit groove (21).
2. The foldable exhaust gas collection hood according to claim 1, characterized in that: The surface of the first expansion cover (3) is provided with a movable slot A (9) and a slot A (10). The movable slot A (9) and the slot A (10) are connected. The card block A (17) is slidably connected inside the movable slot A (9) and the slot A (10).
3. The foldable exhaust gas collection hood according to claim 1, characterized in that: The surface of the second expansion cover (4) is provided with a movable slot B (11), a movable slot C (12), and a slot B (13). The movable slot C (12) is connected to the movable slot B (11) and the slot B (13) respectively.
4. The foldable exhaust gas collection hood according to claim 1, characterized in that: The card block B (15) is compatible with the movable slot B (11), movable slot C (12) and card slot B (13), and the card block B (15) can slide inside the movable slot B (11), movable slot C (12) and card slot B (13).
5. A foldable exhaust gas collection hood according to claim 1, characterized in that: The surface of the exhaust gas collection hood (1) is fixedly connected to multiple mounting components (7), and each mounting component (7) is rotatably connected to a rotating rod (8). Each rotating rod (8) is fixedly connected to the corresponding first expansion hood (3) or second expansion hood (4).
6. A foldable exhaust gas collection hood according to claim 1, characterized in that: The exhaust gas collection hood (1) is fixedly connected to the top of an exhaust pipe (2), an adsorption plate (5) is fixedly connected inside the exhaust pipe (2), and a filter plate (6) is fixedly connected inside the exhaust pipe (2).
7. A foldable exhaust gas collection hood according to claim 1, characterized in that: The bottom of the first expansion cover (3) and the second expansion cover (4) are fixedly connected to a fixing block (22), and each fixing block (22) is snapped into the surface of the exhaust gas collection cover (1).