A hazardous chemical warehouse exhaust filtering device

Abstract

The utility model discloses a kind of exhaust filtering devices for dangerous chemical warehouse, including fan box, the inner wall of fan box is fixedly connected with fan by support, the inside of fan box is slidably connected with primary efficiency filter plate. The utility model is set to primary efficiency filter plate, adsorption box and convenient locking structure, significantly improve the dangerous chemical warehouse exhaust filtration efficiency and maintenance convenience. Primary efficiency filter plate adopts non-woven fabric and active carbon composite design, can intercept large particle dust and preliminarily adsorb volatile organic compounds, prolong the life of subsequent purification component. Its top limiting frame cooperates with torsion spring locking frame, without tool can be quickly assembled and disassembled. Adsorption box is built-in blocky activated carbon, through air-permeable net uniform dispersion airflow, benzene series, sulfide and other dangerous chemical gas adsorption efficiency is greatly improved compared with traditional filter element, suitable for all-weather ventilation demand of class A and class B dangerous chemical warehouse, the device has the advantages of good filtering effect and convenient to use.

Description

Technical Field

[0001] This utility model relates to the field of exhaust filtration technology, specifically an exhaust filtration device for hazardous chemical warehouses. Background Technology

[0002] With the rapid development of the chemical industry, the storage volume of hazardous chemicals is increasing daily. Hazardous chemical warehouses, as centralized storage sites for hazardous chemicals, pose a significant risk due to the flammable, explosive, toxic, and harmful properties of these chemicals. During storage, various harmful gases may volatilize or leak, posing a serious threat to the health of warehouse workers and increasing the risk of major safety accidents such as fires and explosions. Furthermore, untreated emissions directly into the atmosphere cause severe environmental pollution. Therefore, efficient and reliable exhaust filtration systems are crucial for the safe operation of hazardous chemical warehouses.

[0003] Most existing exhaust filtration devices for hazardous chemical warehouses use multiple bolts to fix the filter plates. While this method is simple in structure, it requires additional tools, such as screwdrivers, for actual disassembly and assembly. Operators then use screwdrivers to loosen or install multiple bolts one by one, a process that consumes a lot of manpower and time, resulting in low efficiency in replacing the filter plates. Furthermore, the removed bolts must be carefully stored during actual use, otherwise they are easily lost, significantly reducing the stability of the filter plate fixation due to missing bolts. Utility Model Content

[0004] To address the problems mentioned in the background section, the present invention aims to provide an exhaust filtration device for hazardous chemical warehouses, which has the advantages of good filtration effect and ease of use.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an exhaust filtration device for a hazardous chemical warehouse, comprising a fan box, a fan fixedly connected to the inner wall of the fan box via a bracket, a primary filter plate slidably connected inside the fan box, the upper part of the primary filter plate extending to the upper part of the fan box, limit frames fixedly connected to both sides of the top of the primary filter plate, support frames fixedly connected to both sides of the fan box, a locking frame rotatably connected inside the support frame, the locking frame fitting against the limit frame, a torsion spring fixedly connected to the surface of the support frame, the other end of the torsion spring fixedly connected to the locking frame, and the fan box slidably connected inside the fan box. An adsorption box is provided, with openings on both the front and back. A breathable mesh is fixedly connected inside the openings. Block activated carbon is placed inside the adsorption box. The adsorption box extends to the top of the fan box. A cover plate is provided on the top of the adsorption box. Fixing blocks are fixedly connected to both sides of the adsorption box. Limiting blocks are fixedly connected to both sides of the cover plate. A limiting opening is provided on the top of the limiting block. The limiting opening is straight. A round rod is rotatably connected to the top of the fixing block. The top of the round rod passes through the limiting opening and is fixedly connected to a locking block. The locking block is straight. The bottom of the locking block fits against the top of the limiting block.

[0006] In a preferred embodiment of this invention, a stirring rod is rotatably connected inside the cover plate. The stirring rods are evenly distributed inside the cover plate, with the top of each rod extending above the cover plate and fixedly connected to a first bevel gear. The bottom of each stirring rod extends into the adsorption box. Support blocks are fixedly connected to both sides of the top of the cover plate. A rotating shaft is rotatably connected inside each support block, and a second bevel gear is fitted onto the surface of the rotating shaft. The second bevel gear meshes with the first bevel gear. A motor is fixedly connected to the left side of the support block, and the output end of the motor is fixedly connected to the rotating shaft.

[0007] As a preferred embodiment of this utility model, a protective frame is fixedly connected to the top of the cover plate, and the support block, the rotating shaft, the first bevel gear and the second bevel gear are all located inside the protective frame.

[0008] As a preferred embodiment of this utility model, a support frame is fixedly connected to both the front and rear sides of the fan box. A first sealing ring is fixedly connected to the side of the support frame near the primary filter plate. The first sealing ring is in contact with the primary filter plate. A second sealing ring is fixedly connected to the bottom of the cover plate. The second sealing ring is in contact with the adsorption box.

[0009] As a preferred embodiment of this invention, a sealing frame is fixedly connected inside the fan box, and the inner wall of the sealing frame is in contact with the adsorption box.

[0010] As a preferred embodiment of this utility model, handles are fixedly connected to the top of the protective frame and the top of the primary filter plate, and the surface of the handles is provided with anti-slip texture. Guide blocks are fixedly connected to the front and rear sides of the top of the fan box.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] 1. This utility model employs a pre-filter plate, adsorption box, and convenient locking structure, significantly improving the exhaust filtration efficiency and maintenance convenience of hazardous chemical warehouses. The pre-filter plate uses a composite design of non-woven fabric and activated carbon, which can intercept large dust particles and initially adsorb volatile organic compounds, extending the life of subsequent purification components. Its top limiting bracket and torsion spring locking bracket work together, allowing for quick installation and removal without tools, greatly shortening replacement time. This device has the advantages of good filtration effect and ease of use.

[0013] 2. This invention uses a motor-driven shaft to drive a second bevel gear, which simultaneously meshes with multiple sets of first bevel gears, causing the stirring rod to rotate 360° to agitate the activated carbon. This dynamic adsorption mode breaks the mass transfer resistance of static adsorption, significantly increasing the contact area between the gas and the activated carbon, and greatly improving the adsorption efficiency for low concentrations of polar molecules such as formaldehyde and ammonia. The stirring process also prevents the activated carbon from caking, extending its service life. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic cross-sectional view of the fan box structure of this utility model on the right side;

[0016] Figure 3 This is a front sectional view of the adsorption box structure of this utility model;

[0017] Figure 4 This utility model Figure 2 Enlarged schematic diagram of the structure at point A in the middle;

[0018] Figure 5 This utility model Figure 3 Enlarged schematic diagram of the structure at point B.

[0019] In the diagram: 1. Fan box; 2. Fan; 3. Primary filter plate; 4. Limiting frame; 5. Support frame; 6. Locking frame; 7. Torsion spring; 8. Adsorption box; 9. Breathable mesh; 10. Cover plate; 11. Fixing block; 12. Limiting block; 13. Limiting port; 14. Round rod; 15. Locking block; 16. Stirring rod; 17. First bevel gear; 18. Support block; 19. Rotating shaft; 20. Second bevel gear; 21. Motor; 22. Protective frame; 23. Handle; 24. Support frame; 25. First sealing ring; 26. Second sealing ring; 27. Guide block; 28. Sealing frame. Detailed Implementation

[0020] 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.

[0021] like Figures 1 to 5As shown, an exhaust filtration device for a hazardous chemical warehouse includes a fan box 1. A fan 2 is fixedly connected to the inner wall of the fan box 1 via a bracket. A protective shell is provided on the surface of the motor of the fan 2, and the surface of the protective shell is provided with heat dissipation holes. A primary filter plate 3 is slidably connected inside the fan box 1, extending above the fan box 1. Limiting frames 4 are fixedly connected to both sides of the top of the primary filter plate 3. Support frames 5 are fixedly connected to both sides of the fan box 1. A locking frame 6 is rotatably connected inside the support frame 5 via a bearing. The locking frame 6 fits against the limiting frame 4. A torsion spring 7 is fixedly connected to the surface of the support frame 5, and the other end of the torsion spring 7 is fixedly connected to the locking frame 6. An adsorption box 8 is slidably connected inside the fan box 1. The front and back of the adsorption box 8 have openings. A breathable mesh 9 is fixedly connected inside the openings. The breathable mesh 9 allows air to pass through, but the block activated carbon blocks inside the adsorption box 8 cannot pass through. The adsorption box 8 contains block activated carbon. The suction box 8 extends above the fan box 1. A cover plate 10 is provided on the top of the suction box 8. Fixing blocks 11 are fixedly connected to both sides of the suction box 8. Limiting blocks 12 are fixedly connected to both sides of the cover plate 10. A limiting opening 13 is formed on the top of the limiting block 12. The limiting opening 13 is in the shape of a straight line. A round rod 14 is rotatably connected to the top of the fixing block 11. The top of the round rod 14 passes through the limiting opening 13 and is fixedly connected to a locking block 15. The top view cross-sectional area of ​​the limiting opening 13 is slightly larger than that of the locking block 15. Looking at the cross-sectional area from above, the locking block 15 is in the shape of a straight line. The bottom of the locking block 15 fits against the top of the limiting block 12. The primary filter plate 3 is located on the back of the adsorption box 8. The front of the fan box 1 is the air outlet. The fan 2 is located on the front of the adsorption box 8. The primary filter plate 3 can be installed and removed by sliding it up and down. The operator can move the adsorption box 8 up and remove it. The primary filter plate 3 is made of non-woven fabric and activated carbon adsorption plate. The surface of the torsion spring 7 is coated with an anti-rust coating.

[0022] refer to Figure 3 Inside the cover plate 10, there are several stirring rods 16 rotatably connected via bearings. The stirring rods 16 are evenly distributed inside the cover plate 10. The top of the stirring rods 16 extends above the cover plate 10 and is fixedly connected to a first bevel gear 17. The bottom of the stirring rods 16 extends into the adsorption box 8. Support blocks 18 are fixedly connected to both sides of the top of the cover plate 10. A rotating shaft 19 is rotatably connected inside the support block 18 via bearings. A second bevel gear 20 is sleeved on the surface of the rotating shaft 19. The second bevel gear 20 meshes with the first bevel gear 17. A motor 21 is fixedly connected to the left side of the left support block 18. The output end of the motor 21 is fixedly connected to the rotating shaft 19 via a coupling.

[0023] As a technical optimization of this utility model, the motor 21 drives the rotating shaft 19 to drive the second bevel gear 20, which simultaneously meshes with multiple sets of first bevel gears 17, causing the stirring rod 16 to rotate 360° to agitate the activated carbon. This dynamic adsorption mode breaks the mass transfer resistance of static adsorption, significantly increasing the contact area between the gas and the activated carbon, and greatly improving the adsorption efficiency for low-concentration polar molecules such as formaldehyde and ammonia. The stirring process also prevents the activated carbon from caking and extends its service life.

[0024] refer to Figure 3 The top of the cover plate 10 is fixedly connected to a protective frame 22, and the support block 18, the rotating shaft 19, the first bevel gear 17 and the second bevel gear 20 are all located inside the protective frame 22.

[0025] As a technical optimization of this utility model, the protective frame 22 can prevent the first bevel gear 17 or the second bevel gear 20 from being damaged by impact, thereby improving the service life of the device. If there is a lot of dust in the warehouse, a sealed protective cover can be used to cover the outside of the first bevel gear 17 and the second bevel gear 20 to prevent dust from adhering to the surface of the first bevel gear 17 or the second bevel gear 20 and causing the first bevel gear 17 and the second bevel gear 20 to malfunction.

[0026] refer to Figure 2 The front and rear sides of the fan box 1 are fixedly connected to a support frame 24. The support frame 24 is fixedly connected to a first sealing ring 25 on the side near the primary filter plate 3. The first sealing ring 25 is in contact with the primary filter plate 3. The bottom of the cover plate 10 is fixedly connected to a second sealing ring 26. The second sealing ring 26 is in contact with the adsorption box 8.

[0027] As a technical optimization of this utility model, the sealing between the fan box 1 and the primary filter plate 3 can be increased by setting the first sealing ring 25, and the sealing between the cover plate 10 and the adsorption box 8 can be increased by setting the second sealing ring 26. Both the first sealing ring 25 and the second sealing ring 26 are made of rubber material, ensuring that the purification system remains highly efficient and stable during long-term operation, and providing continuous and reliable safety protection for the storage environment.

[0028] refer to Figure 2 A sealing frame 28 is fixedly connected inside the fan box 1, and the inner wall of the sealing frame 28 is in contact with the adsorption box 8.

[0029] As a technical optimization of this utility model, the innovative design of the sealing frame 28 further enhances the system's sealing performance and structural stability. The sealing frame 28 is made of rubber, effectively resisting the corrosion of various chemical substances. The inner wall of the sealing frame 28 forms a tight fit with the adsorption box 8, significantly improving the sealing effect and preventing gas leakage. The application of the sealing frame 28 enables the purification system to maintain reliable sealing performance and structural stability even under complex operating conditions, providing continuous and effective air purification for hazardous chemical warehouses.

[0030] refer to Figure 1 Handles 23 are fixedly connected to the top of the protective frame 22 and the top of the primary filter plate 3. The surface of the handles 23 is provided with anti-slip texture. Guide blocks 27 are fixedly connected to the front and rear sides of the top of the fan box 1.

[0031] As a technical optimization of this utility model, the user-friendly design significantly improves the operability and safety of the equipment. The handle 23 features an anti-slip design, ensuring reliable grip even in humid environments and reducing the risk of operational errors. The arc-shaped design of the guide block 27 facilitates smoother insertion of the filter assembly, reducing operational resistance and improving maintenance efficiency. The position of the handle 23 at the top of the protective frame 22 conforms to ergonomic principles, allowing the operator to exert force naturally and reducing labor intensity. The optimized design of the anti-slip texture and guide block 27 ensures that the equipment maintains good operability and safety throughout long-term use, providing reliable protection for the daily maintenance of the ventilation system in hazardous chemical warehouses.

[0032] The working principle and usage procedure of this utility model: When using this hazardous chemical warehouse exhaust filtration device, a pre-installation inspection must first be performed. After installing the fan box 1 in the appropriate position, press the locking frame 6, causing the right locking frame 6 to rotate clockwise and the left locking frame 6 to rotate counterclockwise. At this time, the torsion spring 7 rotates, and with the assistance of the top guide block 27, the primary filter plate 3 is smoothly slid into the fan box 1 from top to bottom. After it is in place, release the locking frame 6 on the support frame 5, so that it fits against the limiting frame 4 on the top of the primary filter plate 3. The torsion spring 7 will ensure a firm lock. Then, the adsorption box 8 containing block activated carbon is also slid into the fan box from top to bottom. 1. Cover the cover plate 10. During this process, align the locking block 15 with the limiting port 13 and let the locking block 15 pass through the limiting port 13 on the limiting block 12. When the cover plate 10 is placed in the correct position, rotate the locking block 15 ninety degrees. At this time, the locking block 15 is offset from the limiting port 13, and the cover plate 10 cannot be opened upwards, thus completing the locking of the cover plate 10. There is static friction between the fixing block 11 and the round rod 14, which prevents the round rod 14 and the locking block 15 from rotating easily, thereby improving the stability of locking the cover plate 10.

[0033] When starting the device, the motor 21 is turned on, and the motor 21 drives the rotating shaft 19 to rotate. Through the meshing of the second bevel gear 20 and the first bevel gear 17, the stirring rod 16 is driven to stir the activated carbon in the adsorption box 8. Then the fan 2 is turned on to start filtering the air in the hazardous chemical warehouse. Air first passes through the primary filter plate 3, which intercepts large dust particles and initially adsorbs some volatile organic compounds. Then it enters the adsorption box 8, where it comes into full contact with the block activated carbon through the breathable mesh 9, further adsorbing harmful gases. When in use, the motor 21 needs to be connected with a wire. The motor 21 wire can be plugged into an external socket to provide power. Sockets are arranged around the device to provide power to the motor 21 and the fan 2. The motor 21 is installed on top of the cover plate 10. When disassembling and assembling the cover plate 10, the motor 21, the shaft 19, the second bevel gear 20, the first bevel gear 17, and the stirring rod 16 are all disassembled. The operator can directly plug and unplug the motor 21 wire, thus avoiding the inconvenience of disassembling and assembling the cover plate 10 due to the motor 21 wire connection. Through the above-mentioned motor 21 wire connection method, the cover plate 10 and its surface components can be quickly disassembled and assembled, which facilitates maintenance by the operator.

[0034] After a period of use, if maintenance is required, rotate the locking bracket 6 to unlock the primary filter plate 3, and remove it upwards for replacement; rotate the round rod 14 to unlock the cover plate 10, remove the adsorption box 8 to check the activated carbon usage, and replace or replenish it if necessary to ensure that the device always maintains a good filtration effect.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A ventilation filtration device for a hazardous chemical warehouse, comprising a fan box (1), characterized in that: A fan (2) is fixedly connected to the inner wall of the fan box (1) via a bracket. A primary filter plate (3) is slidably connected inside the fan box (1). The upper part of the primary filter plate (3) extends to the upper part of the fan box (1). Limiting frames (4) are fixedly connected to both sides of the top of the primary filter plate (3). Support frames (5) are fixedly connected to both sides of the fan box (1). A locking frame (6) is rotatably connected inside the support frame (5). The locking frame (6) fits against the limiting frame (4). A torsion spring (7) is fixedly connected to the surface of the support frame (5). The other end of the torsion spring (7) is fixedly connected to the locking frame (6). An adsorption box (8) is slidably connected inside the fan box (1). The front and back of the adsorption box (8) are provided with openings. An air-permeable mesh (9) is fixedly connected inside the adsorption box (8). Block activated carbon is provided inside the adsorption box (8). The upper part of the adsorption box (8) extends to the upper part of the fan box (1). A cover plate (10) is provided on the top of the adsorption box (8). Fixing blocks (11) are fixedly connected to both sides of the adsorption box (8). Limiting blocks (12) are fixedly connected to both sides of the cover plate (10). A limiting opening (13) is opened on the top of the limiting block (12). The limiting opening (13) is straight. A round rod (14) is rotatably connected to the top of the fixing block (11). The top of the round rod (14) passes through the limiting opening (13) and is fixedly connected to a locking block (15). The locking block (15) is straight. The bottom of the locking block (15) is in contact with the top of the limiting block (12).

2. The exhaust filtration device for a hazardous chemical warehouse according to claim 1, characterized in that: A stirring rod (16) is rotatably connected inside the cover plate (10). There are several stirring rods (16), which are evenly distributed inside the cover plate (10). The top of the stirring rod (16) extends to the top of the cover plate (10) and is fixedly connected to a first bevel gear (17). The bottom of the stirring rod (16) extends to the inside of the adsorption box (8). Support blocks (18) are fixedly connected to both sides of the top of the cover plate (10). A rotating shaft (19) is rotatably connected inside the support block (18). A second bevel gear (20) is sleeved on the surface of the rotating shaft (19). The second bevel gear (20) meshes with the first bevel gear (17). A motor (21) is fixedly connected to the left side of the support block (18). The output end of the motor (21) is fixedly connected to the rotating shaft (19).

3. The exhaust filtration device for a hazardous chemical warehouse according to claim 2, characterized in that: The top of the cover plate (10) is fixedly connected to a protective frame (22), and the support block (18), the rotating shaft (19), the first bevel gear (17) and the second bevel gear (20) are all located inside the protective frame (22).

4. The exhaust filtration device for a hazardous chemical warehouse according to claim 3, characterized in that: The front and rear sides of the fan box (1) are fixedly connected to a support frame (24). The support frame (24) is fixedly connected to a first sealing ring (25) on the side near the primary filter plate (3). The first sealing ring (25) is in contact with the primary filter plate (3). The bottom of the cover plate (10) is fixedly connected to a second sealing ring (26). The second sealing ring (26) is in contact with the adsorption box (8).

5. The exhaust filtration device for a hazardous chemical warehouse according to claim 4, characterized in that: A sealing frame (28) is fixedly connected inside the fan box (1), and the inner wall of the sealing frame (28) is in contact with the adsorption box (8).

6. The exhaust filtration device for a hazardous chemical warehouse according to claim 5, characterized in that: The top of the protective frame (22) and the top of the primary filter plate (3) are both fixedly connected to handles (23), the surface of the handles (23) is provided with anti-slip texture, and the front and rear sides of the top of the fan box (1) are both fixedly connected to guide blocks (27).

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