An air filtration structure for laboratory ventilation

Abstract

The utility model relates to air filtering structure technical field, concretely is a kind of air filtering structure for laboratory ventilation, including ventilation pipeline;The limiting frame is fixed in the ventilation pipeline inner wall;Filtering plate is arranged in the ventilation pipeline inside;Ventilation pipeline one end is equipped with connecting cavity, the utility model discloses by rotating screw rod of pivot, thread hole will be moved at this time in screw rod, thread rod will push long strip when moving, long strip drives fixed column to move in movable hole again, at this time spring will carry out corresponding stretching movement, after fixed groove on the fixed column outer wall and filtering plate non-abut, it can remove the fixing of filtering plate, subsequently filtering plate can be disassembled, the utility model discloses by changing the installation mode of ventilation pipeline and filtering plate, make it when disassembling, maintenance ventilation pipeline and filtering plate is more convenient, and practicality is higher.

Description

Technical Field

[0001] This utility model relates to the field of air filtration structure technology, specifically an air filtration structure for laboratory ventilation. Background Technology

[0002] A laboratory is a facility specifically designed for conducting experiments, scientific research, and technological development. It is equipped with a variety of advanced instruments, equipment, and materials to support diverse scientific experiments and research projects.

[0003] Because laboratories contain a large number of instruments, equipment, and materials, air filtration structures are usually used to filter the air in ventilation ducts to prevent these instruments, equipment, and materials from being affected by dust or impurities in the air. However, the existing air filtration structures and ventilation ducts are relatively complex to install, making it inconvenient to disassemble and maintain the air filtration structures, resulting in low practicality.

[0004] Therefore, an air filtration structure for laboratory ventilation is proposed. Summary of the Invention

[0005] The purpose of this invention is to provide an air filtration structure for laboratory ventilation.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An air filtration structure for laboratory ventilation, comprising:

[0008] Ventilation ducts;

[0009] A limit frame is fixed to the inner wall of the ventilation duct;

[0010] The ventilation duct is equipped with a filter plate;

[0011] The ventilation duct has a connecting cavity at one end, and a movable hole is provided in the inner wall of the connecting cavity. A fixed column is movably installed in the movable hole, and a connecting plate is fixed at one end of the fixed column.

[0012] The outer wall of the fixed column is provided with a spring;

[0013] One end of the spring is fixed to the connecting plate, and the other end of the spring is fixed to the inner wall of the connecting cavity;

[0014] The fixing post abuts against the front end of the filter plate, and the limiting frame abuts against the rear end of the filter plate.

[0015] Preferably, a long strip is fixed to the outer wall of the connecting plate, one end of the long strip extends to the outside of the connecting cavity, a connecting lug is fixed to one end of the ventilation duct, a threaded hole is opened at one end of the connecting lug, a threaded rod is threadedly connected to the threaded hole, a rotating shaft is fixed to one end of the threaded rod, and the other end of the threaded rod abuts against the long strip.

[0016] Preferably, the outer wall of the fixing column is provided with a fixing groove, and the fixing groove abuts against the front end of the filter plate.

[0017] Preferably, one end of the ventilation duct has a movable cavity, the inner wall of the movable cavity has a movable groove, a movable block is movably disposed in the movable groove, a receiving plate is fixed to the top of the movable block, and a pull rod extending to the outside of the movable cavity is fixed to one end of the receiving plate.

[0018] Preferably, the filter plate has a notch at its rear end, and the bottom of the movable block has a vertical strip located inside the notch.

[0019] Preferably, the filter plate consists of an activated carbon layer, a fine filter layer, a coarse filter layer, and a pre-filter layer from front to back.

[0020] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0021] This invention utilizes a rotating shaft to rotate a threaded rod, which moves within a threaded hole. This movement pushes a long strip, which in turn moves a fixed post within a movable hole. Simultaneously, a spring undergoes a corresponding stretching motion. Once the fixing groove on the outer wall of the fixed post is no longer in contact with the filter plate, the filter plate can be released and disassembled. This invention, by altering the installation method of the ventilation duct and filter plate, makes disassembly and maintenance of both components more convenient and highly practical. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This utility model Figure 1 A magnified structural diagram of A in the middle;

[0024] Figure 3 This is a schematic diagram of the vertical strip and notched groove connection structure in this utility model;

[0025] Figure 4 This is a schematic diagram of the fixed column and spring structure in this utility model;

[0026] Figure 5 This is a schematic diagram of the composition and structure of the filter plate in this utility model;

[0027] Figure 6This is a schematic diagram of the fixed column structure in this utility model.

[0028] In the diagram: 1. Ventilation duct; 2. Limiting frame; 3. Filter plate; 4. Connecting cavity; 5. Movable hole; 6. Fixed column; 7. Fixed groove; 8. Connecting plate; 9. Spring; 10. Long strip; 11. Connecting ear; 12. Threaded hole; 13. Threaded rod; 14. Rotating shaft; 15. Movable cavity; 16. Movable groove; 17. Movable block; 18. Notched groove; 19. Vertical bar; 20. Support plate; 21. Tie rod; 22. Activated carbon layer; 23. Fine filter layer; 24. Coarse filter layer; 25. Pre-filter layer. Detailed Implementation

[0029] 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.

[0030] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods. Example 1

[0031] Please see Figure 1-46. This utility model provides a technical solution: To achieve the above objectives, this utility model provides the following technical solution: An air filtration structure for laboratory ventilation, comprising: a ventilation duct 1; a limiting frame 2 fixed to the inner wall of the ventilation duct 1; a filter plate 3 disposed inside the ventilation duct 1; a connecting cavity 4 opened at one end of the ventilation duct 1, a movable hole 5 opened on the inner wall of the connecting cavity 4, a fixed post 6 movably disposed in the movable hole 5, a connecting plate 8 fixed at one end of the fixed post 6; a spring 9 disposed on the outer wall of the fixed post 6; one end of the spring 9 fixed to the connecting plate 8, and the other end of the spring 9 fixed to the inner wall of the connecting cavity 4; the fixed post 6 abuts against the front end of the filter plate 3, the limiting frame 2 abuts against the rear end of the filter plate 3, and a long strip 10 fixed to the outer wall of the connecting plate 8, one end of the long strip 10 extending... To the outside of the connecting cavity 4, one end of the ventilation duct 1 is fixed with a connecting ear 11, one end of the connecting ear 11 is provided with a threaded hole 12, a threaded rod 13 is threadedly connected in the threaded hole 12, one end of the threaded rod 13 is fixed with a rotating shaft 14, the other end of the threaded rod 13 abuts against the long strip 10, the outer wall of the fixed column 6 is provided with a fixed groove 7, the fixed groove 7 abuts against the front end of the filter plate 3, one end of the ventilation duct 1 is provided with a movable cavity 15, the inner wall of the movable cavity 15 is provided with a movable groove 16, a movable block 17 is movably arranged in the movable groove 16, the top of the movable block 17 is fixed with a receiving plate 20, one end of the receiving plate 20 is fixed with a pull rod 21 extending to the outside of the movable cavity 15, the rear end of the filter plate 3 is provided with a notch 18, and the bottom of the movable block 17 is fixed with a vertical strip 19 located inside the notch 18.

[0032] Specifically, this utility model rotates the threaded rod 13 via the rotating shaft 14. At this time, the threaded rod 13 moves within the threaded hole 12. When the threaded rod 13 moves, it pushes the long strip 10, which in turn drives the fixed column 6 to move within the movable hole 5. At this time, the spring 9 will perform a corresponding stretching movement. After the fixing groove 7 on the outer wall of the fixed column 6 is no longer in contact with the filter plate 3, the fixing of the filter plate 3 can be released, and then the filter plate 3 can be disassembled. This utility model makes it more convenient to disassemble and maintain the ventilation duct 1 and the filter plate 3 by changing the installation method of the ventilation duct 1 and the filter plate 3, and has high practicality.

[0033] This utility model uses a pull rod 21 in conjunction with a receiving plate 20 to pull the movable block 17. At this time, the movable block 17 will move within the movable groove 16. When the movable block 17 moves, the vertical bar 19 in conjunction with the notch 18 will drive the filter plate 3 to move, thereby making it easier to remove the filter plate 3 from the ventilation duct 1, and further facilitating the disassembly of the filter plate 3. Example 2

[0034] Please see Figure 5 This utility model provides a technical solution: an air filtration structure for laboratory ventilation, wherein the filter plate 3 consists of an activated carbon layer 22, a fine filter layer 23, a coarse filter layer 24, and a pre-filter layer 25 from front to back.

[0035] Specifically, the pre-filter layer 25 in this invention is usually made of non-woven fabric or sponge, and its main function is to intercept large particles of dust, sand, hair and other impurities. The coarse filter layer 24 is usually made of polyester fiber and other materials, which has a large pore size and good air permeability, and can effectively intercept larger particles such as pollen and willow catkins. The fine filter layer 23 is usually made of high-density polyester fiber or glass fiber, which has a very small pore size and can filter out tiny particles with a diameter of 0.1 micrometers or more, such as bacteria, viruses and mold. The activated carbon layer 22 can remove odors, harmful gases and volatile organic compounds (VOCs) such as formaldehyde and benzene from the air, and improve the freshness of the air. In summary, with the cooperation of the activated carbon layer 22, the fine filter layer 23, the coarse filter layer 24 and the pre-filter layer 25, this invention can effectively improve the filtration performance of the filter plate 3, thereby protecting the instruments, equipment and materials inside the laboratory.

[0036] Working principle:

[0037] When disassembling the filter plate 3, the operator rotates the threaded rod 13 via the pivot 14. The threaded rod 13 moves within the threaded hole 12, pushing the long strip 10 within the connecting cavity 4 of the ventilation duct 1. The long strip 10, in conjunction with the connecting plate 8, moves the fixing column 6 within the movable hole 5. At this time, the spring 9 performs a corresponding stretching motion. Once the fixing groove 7 on the outer wall of the fixing column 6 is no longer in contact with the filter plate 3, the fixing of the filter plate 3 can be released, allowing for its disassembly. Furthermore, the operator can use the pull rod 21 in conjunction with the receiving plate 20 to pull the movable block 17 within the movable cavity 15. The movable block 17 moves within the movable groove 16. As the movable block 17 moves, the vertical bar 19, in conjunction with the notch 18, moves the filter plate 3, facilitating its removal from the ventilation duct 1 and further simplifying the process. The purpose of disassembling filter plate 3 is as follows: the pre-filter layer 25 is usually made of non-woven fabric or sponge, and its main function is to intercept large particles of dust, sand, hair and other impurities. The coarse filter layer 24 is often made of polyester fiber and other materials, which has a large pore size and good air permeability, and can effectively intercept larger particles such as pollen and willow catkins. The fine filter layer 23 is often made of high-density polyester fiber or glass fiber, with a very small pore size, which can filter out tiny particles with a diameter of 0.1 micrometers or larger, such as bacteria, viruses and mold. The activated carbon layer 22 can remove odors, harmful gases and volatile organic compounds (VOCs) such as formaldehyde and benzene from the air, and improve the freshness of the air. Therefore, with the cooperation of activated carbon layer 22, fine filter layer 23, coarse filter layer 24 and pre-filter layer 25, the filtration performance of filter plate 3 can be effectively improved, thereby protecting the instruments, equipment and materials inside the laboratory.

[0038] In the description of this utility model, it should be understood that the terms "center", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation 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 limiting the scope of protection of this utility model.

[0039] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An air filtration structure for laboratory ventilation, characterized in that, include: Ventilation duct (1); The ventilation duct (1) has a limit frame (2) fixed to its inner wall; The ventilation duct (1) is equipped with a filter plate (3); The ventilation duct (1) has a connecting cavity (4) at one end, and a movable hole (5) is provided on the inner wall of the connecting cavity (4). A fixed column (6) is movably arranged in the movable hole (5), and a connecting plate (8) is fixed at one end of the fixed column (6). A spring (9) is provided on the outer wall of the fixed column (6); One end of the spring (9) is fixed to the connecting plate (8), and the other end of the spring (9) is fixed to the inner wall of the connecting cavity (4); The fixing post (6) abuts against the front end of the filter plate (3), and the limiting frame (2) abuts against the rear end of the filter plate (3).

2. The air filtration structure for laboratory ventilation according to claim 1, characterized in that, A long strip (10) is fixed to the outer wall of the connecting plate (8). One end of the long strip (10) extends to the outside of the connecting cavity (4). A connecting ear (11) is fixed to one end of the ventilation duct (1). A threaded hole (12) is opened at one end of the connecting ear (11). A threaded rod (13) is threadedly connected in the threaded hole (12). A rotating shaft (14) is fixed to one end of the threaded rod (13). The other end of the threaded rod (13) abuts against the long strip (10).

3. An air filtration structure for laboratory ventilation according to claim 1, characterized in that, The outer wall of the fixed column (6) is provided with a fixing groove (7), which abuts against the front end of the filter plate (3).

4. An air filtration structure for laboratory ventilation according to claim 1, characterized in that, The ventilation duct (1) has a movable cavity (15) at one end, and a movable groove (16) is provided on the inner wall of the movable cavity (15). A movable block (17) is movably arranged in the movable groove (16), and a receiving plate (20) is fixed on the top of the movable block (17). A pull rod (21) extending to the outside of the movable cavity (15) is fixed on one end of the receiving plate (20).

5. An air filtration structure for laboratory ventilation according to claim 4, characterized in that, The filter plate (3) has a notch (18) at its rear end, and the bottom of the movable block (17) is fixed with a vertical strip (19) located inside the notch (18).

6. An air filtration structure for laboratory ventilation according to claim 1, characterized in that, The filter plate (3) consists of an activated carbon layer (22), a fine filter layer (23), a coarse filter layer (24), and a pre-filter layer (25) from front to back.

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