A plate-and-frame air filter for air purification

Abstract

The utility model belongs to air purification equipment technical field, including ventilation pipeline, the inside abutment of ventilation pipeline is provided with sealed clamping ring, is provided with sealed groove in the inside of ventilation pipeline, sealed clamping ring is fixedly provided with sealing ring close to ventilation pipeline side, the sealing ring is embedded in the inside of sealed groove, sealed clamping ring is provided with two clamping slots away from ventilation pipeline side, two clamping slots are provided with the clamping frame of clamping, the web of clamping frame middle part is provided with the screen board, is provided with filter cotton between two screen boards, is provided with the protection board on the outer frame surface of screen board, the utility model discloses through sealed clamping ring, clamping frame, tensioning inclined plane etc. Structure setting, solved the problem that the effective structure is short of in prior art to filter cotton clamping fixed, and convenient to dismount replacement, simultaneously on the basis of clamping fixed to the area of pipeline inside except filter cotton seals.

Description

Technical Field

[0001] This utility model belongs to the technical field of air purification equipment, and in particular relates to a plate and frame air filter for air purification. Background Technology

[0002] Air filters were originally respiratory protective devices used to protect breathing. Over the long period since, air filters have advanced and have become respiratory protective devices used in some hazardous industries. Plate and frame air filters, in particular, are widely used due to their simple structure and ease of use.

[0003] Patent application CN201720383021.5 discloses a plate-and-frame air filter, which includes a plate frame, a cover plate, and a filter screen. The plate frame has a frame-like structure, and the cover plate is detachably installed at the end of the plate frame, defining an installation space together with the plate frame. The filter screen is disposed within the installation space. The plate-and-frame air filter provided by this utility model has a detachable cover plate and plate frame. When the cover plate is severely deformed, it can be removed to replace and reuse the filter screen, improving the efficiency of filter screen use and reducing production and maintenance costs.

[0004] In the existing technology, the filter screen can be reused by installing a plate frame, cover plate and filter screen, and by replacing the cover plate, but there are still many shortcomings in its use.

[0005] First, existing devices lack an effective structure to clamp and fix the filter cotton when it is connected to the pipe. When the airflow is too strong during purification, the filter cotton may become unstable and may even fall off. At the same time, most of the fasteners between the filter cotton and the pipe are built into the pipe, making it difficult to disassemble and replace the filter after long-term use, which seriously affects the overall practicality.

[0006] Secondly, when existing devices are placed inside pipes, the connection structure is usually quite complex. When air passes through the filter, some unfiltered air mixes into the filtered air through the connection structure, which greatly reduces the filtration effect and, in severe cases, may even prevent the intended cleaning goal from being achieved. Summary of the Invention

[0007] To overcome the shortcomings of existing technologies, this utility model provides a plate and frame air filter for air purification. This application solves the problem of the lack of an effective structure for clamping and fixing the filter cotton in existing technologies by using a sealing clamping ring, clamping frame, tensioning inclined plane, and other structural features. It also facilitates disassembly and replacement, and seals the area inside the pipe excluding the filter cotton while ensuring proper clamping and fixing.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a plate and frame air filter for air purification, comprising a ventilation duct, a sealing clamping ring being abutted inside the ventilation duct, a sealing groove being provided inside the ventilation duct, a sealing ring being fixedly provided on the side of the sealing clamping ring near the ventilation duct, the sealing ring being embedded in the sealing groove, two snap-fit ​​grooves being provided on the side of the sealing clamping ring away from the ventilation duct, a clamping frame being snap-fitted inside the two snap-fit ​​grooves, a mesh plate being clamped in the middle of the clamping frame, filter cotton being provided between the two mesh plates, and a protective plate being provided on the outer frame surface of the mesh plate.

[0009] Preferably, a first pressing block is provided on the inner ring surface of the sealing clamping ring, and two triangular second pressing blocks are provided on the upper and lower sides of the first pressing block on the inner ring surface of the sealing clamping ring.

[0010] Preferably, the clamping frame is provided with a plurality of third threaded holes at one end near the mesh plate, and a clamping screw is provided in the internal thread of the third threaded hole. The plurality of clamping screws are used to clamp and fix the protective plate.

[0011] Preferably, the sealing clamping ring is provided with a plurality of first abutting grooves on the outer ring surface of the first clamping block, and the ventilation duct is provided with a plurality of second threaded holes at the corresponding first abutting grooves, and a second screw is provided for threaded connection in the second threaded hole.

[0012] Preferably, the sealing clamping ring is provided with a plurality of second abutment grooves on the outer ring surface of the second clamping block, and the ventilation duct is provided with a plurality of first threaded holes at the corresponding second abutment grooves, and a first screw is provided in the threaded connection of the first threaded hole.

[0013] Preferably, the clamping frame is provided with a tensioning slope at the end near the ventilation duct.

[0014] In summary, compared with existing technologies, the beneficial effects of this solution are as follows: This utility model, through the structural design of a clamping frame, a protective plate, a sealing clamping ring, and a tensioning inclined plane, places multiple screw fasteners for fixing the air filter body outside the ventilation duct. This not only improves the fixing effect of the filter cotton, ensuring good sealing of the filter cotton during the filtration process, but also reduces the corrosion of the screw fasteners by dust. It is also more convenient for disassembly and maintenance, greatly improving the overall practicality of the device.

[0015] This invention, through the structural design of sealing clamping rings, sealing rings, and sealing grooves, further improves the overall sealing effect of the non-filtered area of ​​the pipeline by adding a connecting clamping structure to the pipeline. This prevents air from mixing into the purified air through the connecting clamping structure, thereby improving the purification effect of the device. Attached Figure Description

[0016] Figure 1 This is a perspective view of the present invention.

[0017] Figure 2 This is the front view of the present invention.

[0018] Figure 3 for Figure 2 Sectional view along the AA direction.

[0019] Figure 4 for Figure 3 Enlarged view of section B in the middle.

[0020] In the diagram: ventilation duct 10, mesh plate 11, filter cotton 12, clamping frame 13, tensioning inclined plane 14, sealing clamping ring 15, sealing groove 16, sealing ring 17, first abutting groove 18, second abutting groove 19, first threaded hole 20, second threaded hole 21, third threaded hole 22, brush plate protection plate 23, first pressing block 24, second pressing block 25, snap-fit ​​groove 26, pressing screw 27, first screw 28, second screw 29. Detailed Implementation

[0021] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0022] Reference Appendix Figure 2 Appendix Figure 3 Appendix Figure 4 A plate and frame air filter for air purification includes a ventilation duct 10. Two annular sealing grooves 16 are provided on the inner side of the ventilation duct 10. A sealing clamping ring 15 is abutted against the inner side of the ventilation duct 10. A sealing ring 17 made of rubber material is provided on the outer annular surface of the sealing clamping ring 15 near the ventilation duct 10. The sealing ring 17 is embedded inside the sealing groove 16. Two snap-fit ​​grooves 26 are provided on the inner annular surface of the sealing clamping ring 15 away from the ventilation duct 10. A clamping frame 13 is respectively snapped into the two snap-fit ​​grooves 26. Two mesh plates 11 are clamped in the middle of the clamping frame 13. Filter cotton 12 for filtering air is provided between the two mesh plates 11.

[0023] Specifically, during installation, the filter cotton 12 can be placed between the two mesh plates 11 first, and then the two clamping frames 13 can be pressed onto the outer ring surfaces of the two mesh plates 11 to make the two mesh plates 11 fit together and fix them. Then, the outside of the clamping frame 13 is inserted into the snap-fit ​​groove 26 inside the sealing clamping ring 15 to fix its position. Then, the sealing clamping ring 15 is placed inside the ventilation duct 10, so that the two sealing rings 17 on the outside of the sealing clamping ring 15 are embedded in the sealing groove 16 inside the ventilation duct 10, and then fixed with screw fasteners to complete the installation of the filter. At this time, when the outside air blows towards the filter cotton 12, the filter cotton 12 will filter pollutants in the original air to make the filtered air meet the requirements, while the mesh plates 11 will filter and intercept large dust particles. During the air filtration process, some particles may remain. When the air containing particles enters the filter cotton 12, it will adhere to the surface of the filter cotton 12. After a period of time, the filter can be disassembled, replaced and maintained to ensure the air filtration quality.

[0024] It should also be noted that, due to the different environments in which the air purifier is used, different materials and styles of filter cotton 12 can be selected according to the specific circumstances of different environments in order to achieve the expected purification effect.

[0025] More specifically, the sealing groove 16 and sealing ring 17 can prevent unpurified air from leaking from the fixed position of the air filter during the air purification process, thereby affecting the quality of the purified air. Since the sealing ring 17 is made of rubber material, it can be better positioned when the sealing clamping ring 15 is installed inside the ventilation duct 10, ensuring that the fixed position will not shift.

[0026] Reference Appendix Figure 3 and attached Figure 4 A protective plate 23 is provided on the outer frame surface of the mesh plate 11. The two protective plates abut against each other and are inserted into the slot formed between the two clamping frames 13. Multiple through third threaded holes 22 are provided on the ring surface of the clamping frame 13. A clamping screw 27 is provided in the internal thread of the third threaded hole 22.

[0027] Specifically, after installing the two clamping frames 13 into the snap-fit ​​slots 26, the clamping screws 27 are rotated so that their threaded ends move the protective plate 23 toward the other protective plate 23. During this period, the other end of the protective plate 23 will move the two mesh plates 11 to gradually fit together, thereby clamping and securing the filter cotton 12 so that it will not loosen. At this time, setting the protective plate 23 for clamping can not only effectively clamp and fix the position of the filter cotton 12, but also protect the structure of the filter cotton 12 from damage.

[0028] Reference Appendix Figure 1 and attached Figure 4A first clamping block 24 is provided between the two snap-fit ​​grooves 26 of the sealing clamping ring 15. The first clamping block 24 is provided with a plurality of first abutting grooves 18 on the side near the ventilation duct 10. The ventilation duct 10 is provided with a second threaded hole 21 at the corresponding position of each first abutting groove 18. A second screw 29 is provided inside the threaded hole 21.

[0029] Specifically, after the clamping frame 13 is snapped into the snap-fit ​​groove 26, the threaded end of the second screw 29 can be moved into the first abutment groove 18 and abut against the end face of the first clamping block 24 by rotating the second screw 29. Then, by continuing to rotate the second screw 29, the first clamping block 24 can be pushed to move closer to the protective plate 23 and abut against one end of the protective plate 23. At this time, the filter cotton 12 is further fixed to prevent it from loosening. Since the multiple second screws 29 are installed on the outside of the ventilation duct 10, when the filter cotton needs to be disassembled and replaced, the operator only needs to unscrew the multiple second screws 29 on the outside of the ventilation duct 10 to complete the disassembly of the entire filter. Compared with the traditional pipe inner wall fixing structure, disassembly is more convenient.

[0030] Further, see attached document. Figure 4 A tensioning inclined surface 14 is provided on the side of the clamping frame 13 away from the first clamping block 24. A triangular second clamping block 25 is provided on the outer side of the snap-fit ​​groove 26. The inclined surface angle of the second clamping block 25 is the same as that of the tensioning inclined surface 14. A plurality of second abutment grooves 19 are provided on the side of the second clamping block 25 near the ventilation duct 10. A first threaded hole 20 is provided at the corresponding position of each second abutment groove 19 in the ventilation duct 10. A first screw 28 is provided inside the first threaded hole 20.

[0031] Specifically, when the clamping frame 13 is snapped into the snap-fit ​​groove 26, the inclined surface of the second clamping block 25 will press against the inclined surface of the tensioning inclined surface 14, acting as a guide and making it easier for the clamping frame 13 to be inserted into the snap-fit ​​groove 26. Then, by rotating the first screw 28, the threaded end of the first screw 28 moves towards the second abutment groove 19 within the first threaded hole 20 and abuts against one side of the second clamping block 25. Continuing to rotate the first screw 28 will cause the second clamping block 25 to move closer to the filter cotton 12 under the force of the first screw 28. Because the second clamping block 25... The angle of the inclined plane 5 is the same as the angle of the inclined plane 14. When the second clamping block 25 abuts against the tensioning inclined plane 14 and moves towards the filter cotton 12, the clamping frame 13 will move towards the first clamping block 24. At this time, the clamping frame 13 will further clamp the protective plate 23, thereby stabilizing the filter cotton 12 and preventing the filter cotton 12 from loosening. The setting of multiple first screws 28 and second clamping blocks 25 can not only improve the fixing strength between the sealing fixing ring 14 and the ventilation duct 10, but also further clamp and fix the clamping frame 13 by relying on its inclined plane setting, which further improves the overall fixing effect of the filter.

[0032] Furthermore, the inclined surface on the other side of the second clamping block 25 can also guide the airflow, preventing the airflow from being blocked at the clamping frame 13.

[0033] Finally, it should be noted that the connection and fixing of each part of the plate and frame air filter for air purification of this utility model can be achieved by conventional mechanical connection structure, and the control system and connection method required between multiple electrical components and driving components can also be achieved by conventional means and can be equipped with corresponding sensors and detectors. As long as it can achieve its beneficial effect or the specific actions in the above-mentioned work, it can be implemented.

[0034] The specification and claims use certain terms to refer to specific components. Those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. This specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" throughout the specification and claims is an open-ended term and should be interpreted as "comprising but not limited to." "Approximately" means that within an acceptable margin of error, those skilled in the art can solve the technical problem and substantially achieve the technical effect within a certain margin of error.

[0035] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a product or system comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a product or system. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the product or system that includes said element.

[0036] The foregoing description presents and describes several preferred embodiments of this application. However, as mentioned above, it should be understood that this application is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the application concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this application should be within the protection scope of the appended claims.

Claims

1. A plate and frame air filter for air purification, comprising a ventilation duct (10), characterized in that, A sealing clamping ring (15) is provided inside the ventilation duct (10). A sealing groove (16) is provided inside the ventilation duct (10). A sealing ring (17) is fixedly provided on the side of the sealing clamping ring (15) near the ventilation duct (10). The sealing ring (17) is embedded in the sealing groove (16). Two snap-fit ​​grooves (26) are provided on the side of the sealing clamping ring (15) away from the ventilation duct (10). A clamping frame (13) is snap-fitted inside the two snap-fit ​​grooves (26). A mesh plate (11) is clamped in the middle of the clamping frame (13). A filter cotton (12) is provided between the two mesh plates (11). A protective plate (23) is provided on the outer frame surface of the mesh plate (11).

2. The plate and frame air filter for air purification according to claim 1, characterized in that, The sealing clamping ring (15) has a first pressing block (24) on its inner ring surface, and two triangular second pressing blocks (25) are provided on the upper and lower sides of the first pressing block (24) on the inner ring surface of the sealing clamping ring (15).

3. A plate and frame air filter for air purification according to claim 1, characterized in that, The clamping frame (13) is provided with a plurality of third threaded holes (22) at one end near the mesh plate (11). The third threaded holes (22) are internally threaded with clamping screws (27), and the plurality of clamping screws (27) are used to clamp and fix the protective plate (23).

4. A plate and frame air filter for air purification according to claim 2, characterized in that, The sealing clamping ring (15) is provided with a plurality of first abutting grooves (18) on the outer ring surface of the first pressing block (24), and the ventilation duct (10) is provided with a plurality of second threaded holes (21) at the corresponding first abutting grooves (18), and a second screw (29) is provided in the internal thread connection of the second threaded hole (21).

5. A plate and frame air filter for air purification according to claim 2, characterized in that, The sealing clamping ring (15) is provided with a plurality of second abutment grooves (19) on the outer ring surface of the second clamping block (25), and the ventilation duct (10) is provided with a plurality of first threaded holes (20) at the corresponding second abutment grooves (19), and a first screw (28) is provided in the internal thread connection of the first threaded hole (20).

6. A plate and frame air filter for air purification according to claim 2, characterized in that, The clamping frame (13) has a tensioning inclined surface (14) at one end near the ventilation duct (10).

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