Leak-proof filter box

Abstract

The utility model relates to filter equipment technical field discloses a filter box of leakage prevention, including base, the base upper surface fixedly connected with filter drum, filter drum outer wall one side fixedly connected with air inlet pipe, air inlet pipe outer wall fixedly connected with sealed cavity no.

Description

Technical Field

[0001] This utility model relates to the field of filtration equipment technology, and in particular to a leak-proof filter box. Background Technology

[0002] With increasingly stringent environmental protection and air quality requirements, activated carbon filter boxes, as highly efficient gas purification devices, are widely used in industrial waste gas treatment, air purification, and harmful gas filtration. Activated carbon filter boxes purify the air and ensure environmentally friendly emissions by adsorbing harmful gases and odors, making them crucial equipment for ensuring production safety and environmental compliance. However, in actual operation, the sealing performance of the filter box directly affects the filtration effect and equipment safety; preventing gas leakage is one of the key technical challenges in improving the overall performance of the filter box.

[0003] Most activated carbon filter boxes on the market currently use a metal casing connected to the air inlet pipe via mechanical flanges or threaded fasteners, combined with rubber sealing rings or gaskets for sealing. This structure achieves a tight seal through mechanical compression, preventing some gas leakage. The filter box is filled with activated carbon packing, utilizing the powerful adsorption capacity of activated carbon to effectively treat harmful gases. The overall structure emphasizes corrosion resistance and airtightness design; however, the interface sealing often relies on traditional hard sealing rings, lacking sufficient elasticity and adaptability, making it difficult to completely avoid interface gaps and minor leaks.

[0004] However, existing filter box interfaces have limited sealing effectiveness, especially the air inlet interface, which is prone to micro-leakage, leading to the leakage of harmful gases. This not only affects filtration efficiency but also poses safety hazards. Furthermore, poor sealing at the interfaces can cause pressure fluctuations inside the filter box, reducing the activated carbon adsorption effect and consequently impacting overall purification performance. Because traditional sealing structures lack flexibility, disassembly and reinstallation during maintenance are cumbersome, increasing equipment downtime and maintenance costs. Therefore, implementing a more efficient sealing structure at the air inlet pipe is crucial for improving the filter box's sealing performance and ease of operation. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a leak-proof filter box, which aims to improve the problem of insufficient sealing performance of the existing structure, the easy occurrence of small leaks at the air inlet interface, which leads to the leakage of harmful gases and affects the filtration efficiency.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a leak-proof filter box, including a base, a filter barrel fixedly connected to the upper surface of the base, an air inlet pipe fixedly connected to one side of the outer wall of the filter barrel, a sealing cavity 1 fixedly connected to the outer wall of the air inlet pipe, and a sealing component provided inside the sealing cavity 1.

[0007] The sealing assembly includes a sealing ring disposed inside a sealing cavity one. A connecting block one is fixedly connected to the inner wall of the sealing cavity one. A spring one is fixedly connected to the inner wall of the connecting block one. A sliding plate is fixedly connected to one end of the spring one. An extrusion head is fixedly connected to the outer wall of the sliding plate. The outer wall of the extrusion head is fixedly connected to the outer wall of the sealing ring. An L-shaped vertical plate is rotatably connected to the outer wall of the sealing cavity one. A threaded rod is threadedly connected to the inner wall of the L-shaped vertical plate. A sealing cavity two is attached to one side of the outer wall of the sealing cavity one.

[0008] Furthermore, a connecting plate is fixedly connected to the inner wall of the filter barrel, a slide rail is fixedly connected to the lower surface of the connecting plate, an activated carbon box is slidably connected to the outer wall of the slide rail, a second connecting block is fixedly connected to the outer wall of the activated carbon box, a handle is rotatably connected to the inner wall of the second connecting block, an eccentric wheel is rotatably connected inside the second connecting block, a fixing rod is fixedly connected to the inner wall of the eccentric wheel, a second spring is sleeved on the outer wall of the fixing rod, and a fixing block is fixedly connected to one end of the fixing rod.

[0009] Furthermore, a fixing plate is fixedly connected to the outer wall of the filter barrel, and a knob is provided on the outer wall of the fixing plate.

[0010] Furthermore, an air outlet pipe is fixedly connected to the outer wall of the filter barrel, and one end of the threaded rod is rotatably connected to the outer wall of the sealing cavity.

[0011] Furthermore, a filter plate is slidably connected to the inner wall of the activated carbon box, and the outer wall of the fixing block is slidably connected to the inner wall of the filter plate.

[0012] Furthermore, one end of the second spring is fixedly connected to the inner wall of the activated carbon box, and the other end of the second spring is fixedly connected to one side of the outer wall of the fixing block.

[0013] Furthermore, the outer wall of the sliding plate is connected to the inner wall of the connecting block, and the outer wall of the extrusion head is slidably connected to the inner wall of the connecting block.

[0014] Furthermore, the filter plate is disposed inside the filter barrel, and the outer wall of the fixing rod is slidably connected to the inner wall of the activated carbon box.

[0015] This utility model has the following beneficial effects:

[0016] 1. In this utility model, a sealing cavity and internal sealing components are provided on the outer wall of the air inlet pipe. A sliding plate and a compression head, in conjunction with a spring, automatically and elastically tighten the sealing ring, ensuring strong gas sealing at the interface, effectively preventing gas leakage, and improving the safety and environmental performance of the device. Simultaneously, manual adjustment is achieved with an external L-shaped vertical plate and threaded rod, enhancing the flexibility and reliability of the sealing pressure and meeting sealing requirements under different working conditions.

[0017] 2. In this utility model, the filter tank is slidably connected to the activated carbon box by a slide rail inside, combined with a mechanical structure of connecting block, handle, eccentric wheel and fixing rod, so as to realize the quick disassembly and installation of filter plate. This structure facilitates maintenance and replacement of filter material, reduces equipment downtime, improves equipment operating efficiency, and ensures long-term stable operation of the filtration mechanism and high-efficiency purification effect. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of a leak-proof filter box proposed in this utility model;

[0019] Figure 2 This is a schematic diagram of the exploded structure of the air inlet pipe of a leak-proof filter box proposed in this utility model.

[0020] Figure 3 This is a schematic diagram of a portion of the connecting block of a leak-proof filter box proposed in this utility model.

[0021] Figure 4 This is a schematic diagram of the filter barrel section of a leak-proof filter box proposed in this utility model.

[0022] Figure 5 This is a schematic diagram of the activated carbon box portion of a leak-proof filter box proposed in this utility model.

[0023] Figure 6 for Figure 5 Enlarged view of point A in the image.

[0024] Legend:

[0025] 1. Base; 2. Filter canister; 3. Air inlet pipe; 4. Sealing chamber one; 5. L-shaped upright plate; 6. Sealing chamber two; 7. Air outlet pipe; 8. Sealing ring; 9. Connecting block one; 10. Fixing plate; 11. Knob; 12. Spring one; 13. Sliding plate; 14. Extrusion head; 15. Threaded rod; 16. Connecting plate; 17. Filter plate; 18. Slide rail; 19. Activated carbon box; 20. Connecting block two; 21. Handle; 22. Eccentric wheel; 23. Fixing rod; 24. Spring two; 25. Fixing block. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Reference Figures 1-6This utility model provides an embodiment of a leak-proof filter box, including a base 1. The base 1 serves as a support, supporting the entire filter box structure to ensure the stability of the equipment during operation and providing a mounting base for the filter barrel 2 to prevent displacement due to vibration or negative pressure. The filter barrel 2 is fixedly connected to the upper surface of the base 1. An air inlet pipe 3 is fixedly connected to one side of the outer wall of the filter barrel 2. A sealing cavity 4 is fixedly connected to the outer wall of the air inlet pipe 3. The air inlet pipe 3 is a gas input channel for introducing the gas to be treated into the interior of the filter barrel 2. The outer wall of the air inlet pipe 3 is provided with a sealing cavity 4, and a sealing component is provided inside the sealing cavity 4.

[0028] The sealing assembly includes a sealing ring 8, an elastic sealing element located within the sealing cavity 4. Under the pressure of the extrusion head 14 and spring 12, the sealing ring 8 fits tightly against the air inlet, preventing leakage from the interface gaps. It is the core of the sealing assembly. The sealing ring 8 is positioned inside the sealing cavity 4. A connecting block 9 is fixedly connected to the inner wall of the sealing cavity 4, and a spring 12 is fixedly connected to the inner wall of the connecting block 9. A sliding plate 13 is fixedly connected to one end of the spring 12, and the sliding plate 13 is connected to the extrusion head 14 and controlled by the spring 12. The sliding plate 13 slides inside the sealing cavity 4 to press the sealing ring 8 and ensure the sealing performance of the interface. The outer wall of the sliding plate 13 is fixedly connected to the extrusion head 14, and the outer wall of the extrusion head 14 is fixedly connected to the outer wall of the sealing ring 8. The outer wall of the sealing cavity 4 is rotatably connected to an L-shaped vertical plate 5. The inner wall of the L-shaped vertical plate 5 is threadedly connected to a threaded rod 15. The threaded rod 15 is a rotatable and adjustable fastener used to apply or release the pressure of the sealing assembly to achieve fine adjustment of the sealing strength. The sealing cavity 6 is attached to one side of the outer wall of the sealing cavity 4.

[0029] Reference Figures 1-6A connecting plate 16 is fixedly connected to the inner wall of the filter bucket 2. A slide rail 18 is fixedly connected to the lower surface of the connecting plate 16. An activated carbon box 19 is slidably connected to the outer wall of the slide rail 18. The activated carbon box 19 is a sliding container for holding activated carbon material and serves as the main filtration unit. It can be inserted into or pulled out of the filter bucket 2 via the slide rail 18 for easy replacement and inspection. A connecting block 20 is fixedly connected to the outer wall of the activated carbon box 19. A handle 21 is rotatably connected to the inner wall of the connecting block 20. An eccentric wheel 22 is rotatably connected inside the connecting block 20. The eccentric wheel 22 is a rotating structure connected inside the handle 21. When rotated, it drives the fixed rod 23 to move horizontally, achieving precise clamping or loosening under eccentric drive. A fixed rod 23 is fixedly connected to the inner wall of the eccentric wheel 22. A spring 24 is sleeved on the outer wall of the fixed rod 23. A fixed block 25 is fixedly connected to one end of the fixed rod 23. A fixed plate 10 is fixedly connected to the outer wall of the filter bucket 2. The fixed plate 10 is used to install auxiliary components such as the knob 11 and serves as an auxiliary connection. The filter has an operation or positioning function. A knob 11 is provided on the outer wall of the fixed plate 10. An air outlet pipe 7 is fixedly connected to the outer wall of the filter barrel 2. One end of the threaded rod 15 is rotatably connected to the outer wall of the second sealed cavity 6. A filter plate 17 is slidably connected to the inner wall of the activated carbon box 19. The outer wall of the fixed block 25 is slidably connected to the inner wall of the filter plate 17. The filter plate 17 is installed inside the activated carbon box 19 to support the filter material or to directly perform preliminary filtration. One end of the second spring 24 is fixedly connected to the inner wall of the activated carbon box 19, and the other end of the second spring 24 is fixedly connected to one side of the outer wall of the fixed block 25. The outer wall of the sliding plate 13 is slidably connected to the inner wall of the first connecting block 9. The outer wall of the extrusion head 14 is slidably connected to the inner wall of the first connecting block 9. The first connecting block 9 is fixed to the inner wall of the first sealed cavity 4 and is used to connect the first spring 12 and guide the movement of the sliding plate 13 and the extrusion head 14. It is a positioning and guiding element inside the sealed structure. The filter plate 17 is set inside the filter barrel 2. The outer wall of the fixed rod 23 is slidably connected to the inner wall of the activated carbon box 19.

[0030] Working Principle: When a leak-proof filter box is required, the gas to be filtered is first connected to the inlet pipe 3. To prevent gas leakage due to poor sealing, a sealing cavity 4 is set on the outer wall of the inlet pipe 3. Inside the sealing cavity 4, there is a sliding plate 13 and a pressing head 14. The pressing head 14 presses the sealing ring 8 against the interface to achieve automatic elastic sealing. Under the action of the spring 12, the pressing head 14 continuously applies pressure to the sealing ring 8, making the sealing ring 8 fit tightly against the interface, effectively preventing minor leaks. The L-shaped vertical plate 5 and threaded rod 15 outside the sealing cavity can be manually adjusted to assist in adjusting the sealing pressure, improving the reliability and adjustment flexibility of the sealing assembly.

[0031] Furthermore, the filter barrel 2 is slidably connected to the activated carbon box 19 via the slide rail 18, facilitating the replacement of the filter plate 17. During replacement, the activated carbon box 19 is slid out of the barrel by pulling the knob 11, and the connecting block 20 is fixed to the activated carbon box 19. The eccentric wheel 22 is driven to rotate by the handle 21, causing the fixing rod 23 to slide horizontally inside the activated carbon box 19, compressing the spring 24 and causing the fixing block 25 to slide out from the inner wall of the filter plate 17, achieving rapid release. When fixing is required, the handle 21 is released, the fixing rod 23 slides into the activated carbon box 19, and the fixing block 25 slides into the filter plate 17 and is fixed. This structure makes the assembly and disassembly of the filter plate 17 and the filter box body more convenient, reduces equipment downtime, facilitates daily inspection and cleaning, and ensures the continuous and efficient operation of the device.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A leak-proof filter box, comprising a base (1), characterized in that: A filter barrel (2) is fixedly connected to the upper surface of the base (1), and an air inlet pipe (3) is fixedly connected to one side of the outer wall of the filter barrel (2). A sealing cavity (4) is fixedly connected to the outer wall of the air inlet pipe (3), and a sealing component is provided inside the sealing cavity (4). The sealing assembly includes a sealing ring (8), which is disposed inside a sealing cavity one (4). A connecting block one (9) is fixedly connected to the inner wall of the sealing cavity one (4). A spring one (12) is fixedly connected to the inner wall of the connecting block one (9). A sliding plate (13) is fixedly connected to one end of the spring one (12). An extrusion head (14) is fixedly connected to the outer wall of the sliding plate (13). The outer wall of the extrusion head (14) is fixedly connected to the outer wall of the sealing ring (8). An L-shaped vertical plate (5) is rotatably connected to the outer wall of the sealing cavity one (4). A threaded rod (15) is threadedly connected to the inner wall of the L-shaped vertical plate (5). A sealing cavity two (6) is attached to one side of the outer wall of the sealing cavity one (4).

2. The leak-proof filter box according to claim 1, characterized in that: A connecting plate (16) is fixedly connected to the inner wall of the filter barrel (2). A slide rail (18) is fixedly connected to the lower surface of the connecting plate (16). An activated carbon box (19) is slidably connected to the outer wall of the slide rail (18). A connecting block two (20) is fixedly connected to the outer wall of the activated carbon box (19). A handle (21) is rotatably connected to the inner wall of the connecting block two (20). An eccentric wheel (22) is rotatably connected inside the connecting block two (20). A fixing rod (23) is fixedly connected to the inner wall of the eccentric wheel (22). A spring two (24) is sleeved on the outer wall of the fixing rod (23). A fixing block (25) is fixedly connected to one end of the fixing rod (23).

3. The leak-proof filter box according to claim 1, characterized in that: The filter barrel (2) is fixedly connected to a fixing plate (10), and a knob (11) is provided on the outer wall of the fixing plate (10).

4. A leak-proof filter box according to claim 1, characterized in that: The filter barrel (2) is fixedly connected to the outer wall of the air outlet pipe (7), and one end of the threaded rod (15) is rotatably connected to the outer wall of the sealing cavity (6).

5. A leak-proof filter box according to claim 2, characterized in that: The inner wall of the activated carbon box (19) is slidably connected to a filter plate (17), and the outer wall of the fixing block (25) is slidably connected to the inner wall of the filter plate (17).

6. A leak-proof filter box according to claim 2, characterized in that: One end of the second spring (24) is fixedly connected to the inner wall of the activated carbon box (19), and the other end of the second spring (24) is fixedly connected to one side of the outer wall of the fixing block (25).

7. A leak-proof filter box according to claim 1, characterized in that: The outer wall of the sliding plate (13) is slidably connected to the inner wall of the connecting block (9), and the outer wall of the extrusion head (14) is slidably connected to the inner wall of the connecting block (9).

8. A leak-proof filter box according to claim 5, characterized in that: The filter plate (17) is set inside the filter barrel (2), and the outer wall of the fixing rod (23) is slidably connected to the inner wall of the activated carbon box (19).

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