An ultra-high efficiency air purification filter based on a multi-stage composite filter material and a preparation method thereof
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- HANGZHOU ETERNALWATER FILTRATION EQUIP CO LTD
- Filing Date
- 2026-04-15
- Publication Date
- 2026-06-16
Smart Images
Figure CN122209149A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of air purification technology, specifically to an ultra-high efficiency air purification filter based on multi-stage composite filter material and its preparation method. Background Technology
[0002] Air purification filters are devices that separate and capture particulate matter and gaseous pollutants in airflow through mechanisms such as physical interception, electrostatic adsorption, and chemical adsorption, thereby obtaining clean air. These filters are widely used in cleanrooms, biosafety cabinets, hospital operating rooms, commercial and household air purifiers, and other end-point purification processes.
[0003] Currently, commercially available ultra-high efficiency filters generally use multi-layered composite filter media to trap pollutants of different particle sizes at each stage. After a period of operation, fine particles continue to accumulate on the fiber surface and in the internal pores, causing the entire filter media to become clogged and resistance to increase sharply. When the resistance is too high, users can only scrap the entire filter media and replace it with a new one. Frequent shutdowns for replacement not only increase maintenance workload but also shorten the effective operating time of the purification system, resulting in a significant decrease in overall operating efficiency. Therefore, based on the above problems, an ultra-high efficiency air purifier filter based on multi-layered composite filter media and its preparation method are proposed. Summary of the Invention
[0004] The purpose of this invention is to provide an ultra-high efficiency air purifier filter based on multi-stage composite filter media and its preparation method, so as to solve the problem that existing air purifier filters require users to frequently stop to replace composite filter media, resulting in a large amount of maintenance workload and affecting air purification efficiency.
[0005] To achieve the above objectives, the present invention provides the following technical solution: An ultra-high efficiency air purifier filter based on multi-stage composite filter media and its preparation method are disclosed. The filter includes a housing. The housing has several equally spaced mounting ports on its lower side and an air inlet on its right side. A blower is installed inside the air inlet. A bracket is fixedly connected to the lower side of the housing. A cover plate is detachably bolted to the upper side of the housing. Supporting and guiding units are installed inside each mounting port. Each supporting and guiding unit includes a guide seat located inside the mounting port. The guide seat includes a lower guide shell fixedly connected to the inner wall of the mounting port. A pair of adapter seats are fixedly connected to the upper side of the lower guide shell. An exhaust pipe is fixedly connected to a hole on the lower left side of the lower guide shell. An exhaust pipe is installed on the upper side of the guide seat. The system includes a support frame comprising a frame body disposed on the upper side of the flow guide seat. The lower front and rear sides of the frame body have rotating grooves that rotatably connect with the adapter seat. The upper front side of the frame body has a notch. The inner side of the support frame has a filter media loading slot with an upward opening. A drive unit is installed on the inner side of the support frame. The drive unit includes a pair of synchronous rollers rotatably connected to the upper and lower holes of the filter media loading slot. A synchronous grid belt is sleeved on the outer side of the pair of synchronous rollers. An adjustment knob located inside the notch is fixedly connected to the front side of the upper synchronous roller. Composite filter media sheets are installed on the inner side of each filter media loading slot. An upper flow guide shell is fixedly connected to the left side of the frame body. A pin groove is formed on the left side of the upper flow guide shell. A spring pin is installed on the upper left side of the lower flow guide shell.
[0006] Preferably, the cover plate consists of a cover body and an elastic sealing sheet fixed to the lower side of the cover body. The elastic sealing sheet of the cover plate is in contact with the upper end face of the composite filter material sheet. A sealing gasket is fixedly connected to the upper side of the rotating groove. The lower end face of the sealing gasket is in contact with the upper curved surface of the adapter seat. A baffle is fixedly connected to the upper right side of the lower guide shell. The baffle is located on the right side of the composite filter material sheet. The upper guide shell is located on the left side of the composite filter material sheet. The upper guide shell is connected to the lower guide shell.
[0007] Preferably, the outer curved surface of the upper guide shell and the inner curved surface of the lower guide shell are smoothly transitioned, the exhaust pipe is located on the lower side of the upper guide shell, and the spring pin consists of a pin shell, a pin block slidably connected inside the pin shell, and a spring installed inside the pin shell, with the pin block of the spring pin inserted into the pin groove.
[0008] Preferably, the synchronous grid belt is disposed on the left side of the filter media loading groove, and a plurality of grid openings are provided on the inner side of the synchronous grid belt. The composite filter media sheet is disposed on the right side of the filter media loading groove and is attached to the synchronous grid belt.
[0009] Preferably, a warning part is installed on the lower left side of the supporting flow guiding unit on the left side. The warning part includes a seat plate fixedly connected to the lower inner wall of the housing. A back plate is fixedly connected to the left side of the upper end face of the seat plate. A pair of guide strips are fixedly connected to the right end face of the back plate. A guide block located on the upper side of the seat plate is slidably connected to the outer side of the pair of guide strips. A telescopic spring is fixedly connected between the left end face of the guide block and the right end face of the back plate. A contact button is fixedly connected to the right side of the back plate. A distance sensor is installed in the upper hole of the back plate. A buzzer is installed on the left side of the back plate. A control box is installed on the front side of the housing.
[0010] Preferably, there is a distance between the guide block and the contact button, the right inclined surface of the guide block is in contact with the left exhaust pipe, and openings are provided on both the front and rear sides of the seat frame.
[0011] Preferably, the composite filter sheet includes a large-pore protective mesh layer, an electrostatic adsorption layer is disposed on the left side of the large-pore protective mesh layer, an ultra-fine glass fiber layer is disposed on the left side of the electrostatic adsorption layer, an anti-scratch layer is disposed on the left side of the ultra-fine glass fiber layer, and a quick-dissolving adhesive mesh layer is disposed between each adjacent layer of the large-pore protective mesh layer, the electrostatic adsorption layer, the ultra-fine glass fiber layer and the anti-scratch layer.
[0012] Preferably, the large-pore protective mesh layer is a recycled polyester fiber nonwoven fabric with an average pore size of 30–50µm, the electrostatic adsorption layer is composed of a blend of polypropylene microfiber with an average pore size of 4–7µm and an electret meltblown layer, the microfiber layer is alkali-free glass fiber paper with an average pore size of 0.8–1.2µm, the scratch-resistant layer is thin cotton paper with an average pore size of 30–50µm, the quick-dissolving adhesive mesh layer is a polyvinyl alcohol hot-melt fiber mesh with an average pore size of 80–120µm, the water dissolution temperature of the quick-dissolving adhesive mesh layer is above 80℃, and the water dissolution time of the quick-dissolving adhesive mesh layer is within 30s.
[0013] Preferably, a preparation method includes: S1. Unwinding: Unwind the large-hole protective mesh layer, electrostatic adsorption layer, ultra-fine glass fiber layer, anti-scratch layer and several quick-melting adhesive mesh layers under constant tension. S2. Spot rolling composite: After each layer is stacked in sequence, it is hot-pressed once by a hexagonal convex steel roller. The roller temperature is 165-175℃, the linear pressure is 30-40N / mm, and the speed is 25-35m / min. Each quick-melting adhesive mesh layer melts locally at the convex points and solidifies instantly to form a spot bond. This is used to spot bond the large-pore protective mesh layer, the electrostatic adsorption layer, the ultra-fine glass fiber layer, and the scratch-resistant layer to obtain a multi-level filter material. S3. Cooling and winding: The composite multi-stage filter material is cooled to ≤30℃ on both sides by air and then wound up to obtain the master roll. S4. Cutting: The master roll is cut into individual pieces as needed to obtain the finished composite filter material sheet; S5. Installation: Remove the bolts and open the cover to expose the supporting and guiding units inside the housing; insert the lower end of the composite filter media into the upper opening of the filter media loading groove and align it with the synchronous grid belt of the drive unit; rotate the adjustment knob to drive the upper synchronous roller to rotate clockwise, driving the grid belt to circulate and move the composite filter media along the filter media loading groove until it is fully installed; after completing the installation of the remaining supporting and guiding units in sequence, reset the cover.
[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. In this invention, through the structure of supporting and guiding units, composite filter media, blower, and housing, the blower can continuously deliver outside air into the housing. The supporting and guiding units provide mechanical support for the unblocked composite filter media and guide the purified air out. When the composite filter media loses its filtering capacity due to blockage, the supporting and guiding units automatically release the support and positioning of the composite filter media, allowing it to rotate and move under the push of airflow. Thus, other supporting and guiding units and their corresponding composite filter media can immediately take over to complete the air purification task. This realizes that the ultra-high efficiency air purification filter with multi-stage composite filter media reduces the frequency of maintenance and replacement, reduces downtime for maintenance and replacement, and improves air purification efficiency by using several automatically connectable composite filter media. This solves the problem that existing air purification filters require users to frequently stop to replace composite filter media, resulting in a large workload for maintenance and affecting air purification efficiency. 2. In this invention, the warning section, the supporting flow guiding unit, and the composite filter material are designed to continuously push the guide block of the warning section when the purified airflow is discharged, indicating in real time that the left supporting flow guiding unit is in working condition. When the left composite filter material is blocked, causing the airflow to be interrupted, the guide block loses its thrust and moves back under the action of the telescopic spring. The distance sensor then detects the displacement change and triggers the buzzer alarm through the control box, promptly reminding the user that all composite filter materials need to be maintained and replaced, thereby realizing the functions of visible operation status and automatic blockage alarm. 3. In this invention, the composite filter sheet is constructed with a large-pore protective mesh layer, an electrostatic adsorption layer, an ultra-fine glass fiber layer, and a quick-dissolving adhesive mesh layer, forming a structure from right to left: a large-pore protective mesh layer with an average pore size of 30–50 µm, an electrostatic adsorption layer with an average pore size of 4–7 µm, and an ultra-fine glass fiber layer with an average pore size of 0.8–1.2 µm. This allows for multi-stage interception of pollutants of different particle sizes in the airflow, from large to small. When recycling is required, simply placing the filter sheet in high-temperature water will dissolve the quick-dissolving adhesive mesh layer between the layers, separating them and facilitating the recycling and reuse of the composite filter sheet. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 For the present invention Figure 1Another perspective on the structural diagram of the middle structure; Figure 3 For the present invention Figure 1 A schematic diagram of the split structure of the middle part; Figure 4 This is a schematic diagram of the disassembled structure of the shell portion of the present invention; Figure 5 This is a partial cross-sectional view of the flow guiding unit of the present invention; Figure 6 This is a schematic diagram of the flow guide seat of the present invention; Figure 7 This is a schematic diagram of the support frame of the present invention; Figure 8 This is a schematic diagram of the drive unit of the present invention; Figure 9 This is a schematic diagram of the upper guide shell structure of the present invention; Figure 10 This is a schematic diagram of the spring pin structure of the present invention; Figure 11 This is a schematic diagram of the structure of the composite filter material sheet of the present invention; Figure 12 For the present invention Figure 11 A magnified structural diagram at point A; Figure 13 This is a schematic diagram of the warning section of the present invention.
[0016] In the diagram: 1. Shell; 11. Shell; 12. Mounting port; 13. Air inlet; 14. Cover plate; 15. Base; 2. Blower; 3. Supporting guide unit; 31. Guide seat; 311. Lower guide shell; 312. Adapter seat; 313. Baffle; 314. Exhaust pipe; 32. Support frame; 321. Frame; 322. Rotary groove; 323. Sealing gasket; 324. Filter media loading groove; 325. Groove; 33. Drive unit; 331. Synchronous roller; 3 32. Synchronous grid belt; 33. Adjustment knob; 34. Upper guide shell; 35. Pin groove; 36. Spring pin; 4. Composite filter material sheet; 41. Large-pore protective mesh layer; 42. Electrostatic adsorption layer; 43. Ultra-fine glass fiber layer; 44. Anti-scratch layer; 45. Quick-dissolving adhesive mesh layer; 5. Warning section; 51. Seat plate; 52. Back plate; 53. Guide strip; 54. Guide block; 55. Telescopic spring; 56. Contact button; 57. Distance sensor; 58. Buzzer; 6. Control box. Detailed Implementation
[0017] Please see Figure 1-13 The present invention provides a technical solution: An ultra-high efficiency air purifier filter based on multi-stage composite filter media and its preparation method are disclosed. The filter includes a housing 1, comprising a shell 11. The lower side of the shell 11 has several equally spaced mounting ports 12. An air inlet 13 is located on the right side of the shell 11. A blower 2 is installed inside the air inlet 13. A bracket 15 is fixedly connected to the lower side of the shell 11. A cover plate 14 is detachably bolted to the upper side of the shell 11. Supporting and guiding units 3 are installed inside each mounting port 12. Each supporting and guiding unit 3 includes a guiding seat 31 located inside the mounting port 12. The guiding seat 31 includes a lower guiding shell 311 fixedly connected to the inner wall of the mounting port 12. A pair of adapter seats 312 are fixedly connected to the upper side of the lower guiding shell 311. An exhaust pipe 314 is fixedly connected to the left side hole. A support frame 32 is installed on the upper side of the guide seat 31. The support frame 32 includes a frame body 321 set on the upper side of the guide seat 31. The lower front and rear sides of the frame body 321 are provided with rotating grooves 322 that are rotatably connected to the adapter seat 312. The upper front side of the frame body 321 is provided with a notch 325. The inner side of the support frame 32 is provided with a filter media loading groove 324 that is open upwards. A drive unit 33 is installed on the inner side of the support frame 32. The drive unit 33 includes a pair of synchronous rollers 331 that are rotatably connected to the upper and lower holes of the filter media loading groove 324. A synchronous grid belt 332 is sleeved on the outer side of the pair of synchronous rollers 331. An adjustment knob 333 located inside the notch 325 is fixedly connected to the front side of the upper synchronous roller 331. Composite filter media 4 are installed on the inner side of the groove 324. An upper guide shell 34 is fixedly connected to the left side of the frame 321. A pin groove 35 is opened on the left side of the upper guide shell 34. A spring pin 36 is installed on the upper left side of the lower guide shell 311. The cover plate 14 consists of a cover body and an elastic sealing sheet fixed to the lower side of the cover body. The elastic sealing sheet of the cover plate 14 is in contact with the upper end face of the composite filter media 4. A sealing gasket 323 is fixedly connected to the upper side of the rotating groove 322. The lower end face of the sealing gasket 323 is in contact with the upper curved surface of the adapter 312. A baffle 313 is fixedly connected to the upper right side of the lower guide shell 311. The baffle 313 is located on the right side of the composite filter media 4. The upper guide shell 34 is located on the left side of the composite filter media 4. The upper guide shell 34 and the lower guide shell 311 are connected together. 1. The airflow is connected to the composite filter material 4 and flows to the left. Then it enters the upper guide shell 34 and then enters the lower guide shell 311 through the upper guide shell 34. Finally, it is discharged through the exhaust pipe 314. The outer curved surface of the upper guide shell 34 and the inner curved surface of the lower guide shell 311 are smoothly transitioned. The exhaust pipe 314 is located on the lower side of the upper guide shell 34. This setting allows the upper guide shell 34 to smoothly rotate into the lower guide shell 311 and blocks the exhaust pipe 314. The spring pin 36 consists of a pin shell, a pin block that slides inside the pin shell, and a spring installed inside the pin shell. The pin block of the spring pin 36 is inserted into the pin groove 35. This setting allows the spring pin 36 to position the upper guide shell 34 in conjunction with the pin groove 35.The synchronous grid belt 332 is located on the left side of the filter media loading groove 324. Several grid openings are formed on the inner side of the synchronous grid belt 332. The composite filter media sheet 4 is located on the right side of the filter media loading groove 324 and is in contact with the synchronous grid belt 332. This arrangement ensures that the synchronous grid belt 332 supports the composite filter media sheet 4 without affecting its filtration performance.
[0018] like Figures 1-3 , Figure 6 , Figure 13 As shown, a warning section 5 is installed on the lower left side of the left-side support and guide unit 3. The warning section 5 includes a base plate 51 fixedly connected to the lower inner wall of the housing 11. A back plate 52 is fixedly connected to the upper left side of the base plate 51. A pair of guide strips 53 are fixedly connected to the right side of the back plate 52. A guide block 54 located on the upper side of the base plate 51 is slidably connected to the outer side of the pair of guide strips 53. A telescopic spring 55 is fixedly connected between the left end face of the guide block 54 and the right end face of the back plate 52. A contact button 56 is fixedly connected to the right side of the back plate 52. A distance sensor 57 is installed in the upper hole of the back plate 52. A buzzer 58 is installed on the left side of the back plate 52. A control box 6 is installed on the front side of the housing 11. This arrangement ensures that the purified airflow continuously pushes the guide block 54 of the warning section 5 when it is discharged, indicating the left-side support and guide unit in real time. The flow unit 3 is in working condition. When the airflow is interrupted due to blockage of the left composite filter material 4, the guide block 54 loses its thrust and moves back under the action of the telescopic spring 55. The distance sensor 57 then detects the displacement change and triggers the buzzer 58 through the control box 6 to alarm, promptly reminding the user that all composite filter materials 4 need maintenance and replacement, thereby realizing the functions of visible operation status and automatic blockage alarm. There is a distance between the guide block 54 and the contact button 56. This setting ensures that the guide block 54 will not activate the contact button 56 under normal conditions. The right inclined surface of the guide block 54 is in contact with the left exhaust pipe 314. Openings are provided on both the front and rear sides of the bracket 15. This setting allows the gas discharged from the left exhaust pipe 314 to push the guide block 54 to move and allow the gas to flow out from the openings on the front and rear sides of the bracket 15.
[0019] like Figure 3 , Figures 11-12As shown, the composite filter material 4 includes a macroporous protective mesh layer 41, an electrostatic adsorption layer 42 on the left side of the macroporous protective mesh layer 41, an ultrafine glass fiber layer 43 on the left side of the electrostatic adsorption layer 42, and an anti-scratch layer 44 on the left side of the ultrafine glass fiber layer 43. A quick-dissolving adhesive mesh layer 45 is provided between adjacent layers of the macroporous protective mesh layer 41, the electrostatic adsorption layer 42, the ultrafine glass fiber layer 43, and the anti-scratch layer 44. The macroporous protective mesh layer 41 is a recycled polyester fiber nonwoven fabric with an average pore size of 30–50 µm. The electrostatic adsorption layer 42 is composed of polypropylene ultrafine fibers with an average pore size of 4–7 µm blended with an electret meltblown layer. The ultrafine glass fiber layer 43 is alkali-free glass fiber paper with an average pore size of 0.8–1.2 µm. This arrangement ensures that the composite filter material 4 has a macroporous protective mesh layer 41 with an average pore size of 30–50 µm, an electrostatic adsorption layer 42, an ultrafine glass fiber layer 43, and an anti-scratch layer 44, with an average pore size of 40–50 µm, a quick-dissolving adhesive mesh layer 45, and an anti-scratch layer 45 between adjacent layers. The electrostatic adsorption layer 42 with an average pore size of µm and the ultrafine glass fiber layer 43 with an average pore size of 0.8–1.2µm can achieve multi-stage interception of pollutants of different particle sizes in the airflow from large to small. The scratch-resistant layer 44 is a thin cotton paper with an average pore size of 30–50µm. This setting prevents sharp objects from scratching the ultrafine glass fiber layer 43 without affecting the filtration of the ultrafine glass fiber layer 43. The quick-dissolving mesh layer 45 is a polyvinyl alcohol hot-melt fiber mesh with an average pore size of 80–120µm. This setting can bond the layers, namely the large-pore protective mesh layer 41, the electrostatic adsorption layer 42, the ultrafine glass fiber layer 43, and the scratch-resistant layer 44, without affecting the filtration of each layer. The water dissolution temperature of the quick-dissolving mesh layer 45 is above 80℃ and the water dissolution time of the quick-dissolving mesh layer 45 is within 30 seconds. This setting makes it convenient for users to separate the layers of the composite filter material sheet 4 for recycling and reuse.
[0020] A preparation method, comprising: S1. Unwinding: Unwind the large-hole protective mesh layer 41, electrostatic adsorption layer 42, ultra-fine glass fiber layer 43, anti-scratch layer 44 and several quick-melting adhesive mesh layers 45 under constant tension. S2. Spot rolling composite: After each layer is stacked in sequence, it is hot-pressed once by a hexagonal convex steel roller. The roller temperature is 165-175℃, the linear pressure is 30-40N / mm, and the speed is 25-35m / min. Each quick-melting adhesive mesh layer 45 is locally melted and instantly solidified at the convex points to form a spot bond. This is used to spot bond the large-pore protective mesh layer 41, the electrostatic adsorption layer 42, the ultra-fine glass fiber layer 43, and the scratch-resistant layer 44 to obtain a multi-stage filter material. S3. Cooling and winding: The composite multi-stage filter material is cooled to ≤30℃ on both sides by air and then wound up to obtain the master roll. S4. Cutting: The master roll is cut into individual pieces as needed to obtain the finished composite filter material sheet 4. S5. Installation: Remove the bolts and open the cover plate 14 to expose the support and guide units 3 inside the housing 11; insert the lower end of the composite filter material sheet 4 into the upper opening of the filter material loading groove 324 and make it fit with the synchronous grid belt 332 of the drive unit 33; rotate the adjustment knob 333 to drive the upper synchronous roller 331 to rotate clockwise, drive the grid belt to move in a circular motion, and drive the composite filter material sheet 4 down along the filter material loading groove 324 until it is fully installed; after completing the installation of the remaining support and guide units 3 in sequence, reset the cover plate 14.
[0021] Workflow: The operation of the multi-stage composite filter material ultra-high efficiency air purifier is as follows: Note that all electrical components in this application are powered by an external power source and controlled uniformly through the control box 6. The operation steps are as follows: The user starts the blower 2 through the control box 6. The blower 2 draws outside air into the housing 11, causing the airflow to flow from right to left. The airflow first passes through the composite filter material 4 located on the right-side support and guide unit 3. This composite filter material 4, from right to left, is sequentially composed of a large-pore protective mesh layer 41 with an average pore size of 30–50µm, an electrostatic adsorption layer 42 with an average pore size of 4–7µm, and an ultra-fine glass fiber layer 43 with an average pore size of 0.8–1.2µm, which can effectively remove pollutants of different particle sizes in the airflow. The airflow is filtered through multiple stages from large to small. After being filtered by the right-side composite filter sheet 4, the clean airflow continues to pass through the synchronous grid belt 332 of the supporting guide unit 3 and enters the upper guide shell 34. The upper guide shell 34 guides the airflow downward to the lower guide shell 311, and finally discharges through the exhaust pipe 314 of the right-side supporting guide unit 3, completing the air filtration function of the right-side purification channel. When the right-side composite filter sheet 4 becomes clogged with particles and its resistance increases due to long-term operation, the airflow delivered into the housing 11 by the blower 2 generates continuous pressure on the right-side composite filter sheet 4. This pressure is transmitted to the upper guide shell 34 through the support frame 32. Once the pressure exceeds the preset spring force of the spring pin 36, the upper guide shell 34 will release the spring pin. The spring pin 36 is pushed out of the slot 35, causing it to lose its positioning function on the upper guide shell 34, support frame 32, and right-side composite filter material 4. At this time, the support frame 32, upper guide shell 34, and right-side composite filter material 4 rotate 90° counterclockwise to the left under the push of the airflow, closing the right-side purification channel. The airflow inside the shell 11 automatically flows to the middle support guide unit 3 and the middle composite filter material 4, and a new filtration channel is immediately opened to continue ultra-efficient air purification. At the same time, the upper guide shell 34 of the right-side support guide unit 3 is screwed into the lower guide shell 311, sealing the right-side exhaust pipe 314 and terminating the right-side exhaust function. Through the above operations, whenever any composite filter material 4 becomes blocked, The spare composite filter element 4 immediately and automatically takes over the filtration task without manual shutdown for replacement. This achieves an ultra-high efficiency air purifier filter with multi-stage composite filter elements. By using several automatically connected composite filter elements 4, the frequency of maintenance and replacement is reduced, the downtime for maintenance and replacement is reduced, and the air purification efficiency is improved. This solves the problem that existing air purifier filters require users to frequently stop to replace composite filter elements 4, resulting in a large workload for maintenance and affecting the air purification efficiency. When the left support guide unit 3 and its left composite filter element 4 are connected to the middle support guide unit 3 and the middle composite filter element 4 for filtration and purification, the purified airflow is continuously discharged through the left exhaust pipe 314 of the left support guide unit 3.The exhaust airflow pushes the guide block 54 of the warning unit 5 to move to the left. During the leftward movement, the guide block 54 compresses the telescopic spring 55 and triggers the contact button 56. After receiving the trigger signal, the control box 6 confirms that the left-side support guide unit 3 is in working condition and immediately activates the distance sensor 57 to measure the position of the guide block 54 after it moves to the left in real time. As the running time increases, the left-side composite filter material 4 gradually becomes clogged, and the resistance continues to increase. When the filter material loses its effective filtration capacity, no purified airflow is discharged from the left exhaust pipe 314, and the thrust acting on the guide block 54 disappears. At this time, the telescopic spring 55 releases its elastic potential energy and pushes the guide block 54 to reset to the right. After the distance sensor 57 detects the signal of the guide block 54 resetting to the right, it immediately activates the buzzer 58 through the control box 6 to issue an audible and visual alarm, reminding the user that all the composite filter materials 4 of the air purifier filter are close to their service limit and need to be centrally maintained and replaced, thereby avoiding the risk of decreased purification efficiency or equipment damage due to continued operation without knowledge. Unscrew the bolts and remove the cover plate 14 from the housing 11. Below, the supporting flow guiding units 3 and the composite filter media 4 to be maintained and replaced are exposed inside the housing 11. Each composite filter media 4 to be maintained and replaced is removed from the filter media storage tank 324 and replaced with a new composite filter media 4. The old composite filter media 4 is then immersed in hot water, maintaining a water temperature ≥80℃ and gently agitated for 30 seconds. During this period, the quick-dissolving adhesive mesh layer 45 between each layer rapidly dissolves and loses its adhesiveness. The large-pore protective mesh layer 41, electrostatic adsorption layer 42, ultra-fine glass fiber layer 43, and scratch-resistant layer 44 automatically disperse in sequence, forming independent single layers. The surface of the filter sheet is then gently brushed with a nylon brush to separate residual particles from the fibers. A 10-second rinse with clean water completes the initial cleaning. After washing, each layer of material is placed into its corresponding recycling container according to its material composition: the large-pore protective mesh layer 41 and the electrostatic adsorption layer 42 are crushed, melted, and re-granulated for re-spinning into felt; the ultrafine glass fiber layer 43, after drying, can be directly melted and drawn back into new alkali-free glass fiber paper; the scratch-resistant layer 44, with its thin cotton paper, can be recycled and re-spun, achieving a closed-loop recycling of the entire composite filter sheet 4. Maintenance is now complete.
[0022] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only for the purpose of helping to understand the method and core ideas of the present invention. The above descriptions are only preferred embodiments of the present invention. It should be noted that due to the limitations of textual expression, and the objective existence of infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of the present invention.
Claims
1. An ultra-high efficiency air purifier filter based on multi-stage composite filter media, comprising a housing (1), characterized in that: The shell (1) includes a shell (11). A plurality of mounting ports (12) are equidistantly arranged on the lower side of the shell (11). An air inlet (13) is provided on the right side of the shell (11). A blower (2) is installed inside the air inlet (13). A bracket (15) is fixedly connected to the lower side of the shell (11). A cover plate (14) is detachably bolted to the upper side of the shell (11). Supporting and guiding units (3) are installed inside each mounting port (12). The flow unit (3) includes a flow guide seat (31) located inside the mounting port (12). The flow guide seat (31) includes a lower flow guide shell (311) fixedly connected to the inner wall of the mounting port (12). A pair of adapter seats (312) are fixedly connected to the upper side of the lower flow guide shell (311). An exhaust pipe (314) is fixedly connected to the lower left side hole of the lower flow guide shell (311). A support frame (32) is installed on the upper side of the flow guide seat (31). The support frame (32) includes a support frame located on the upper side of the flow guide seat (31). The frame (321) has a rotating groove (322) on both the front and rear sides of the lower part of the frame (321) that is rotatably connected to the adapter (312). The upper front side of the frame (321) has a notch (325). The inner side of the support frame (32) has a filter material loading groove (324) with an upward opening. The inner side of the support frame (32) is equipped with a drive unit (33). The drive unit (33) includes a pair of synchronous rollers (331) that are rotatably connected to the upper and lower holes of the filter material loading groove (324). A synchronous grid belt (332) is sleeved on the outer side of a pair of synchronous rollers (331). An adjustment knob (333) located inside the slot (325) is fixedly connected to the front side of the upper synchronous roller (331). Composite filter media sheets (4) are installed on the inner side of the filter media loading slot (324). An upper guide shell (34) is fixedly connected to the left side of the frame (321). A pin groove (35) is opened on the left side of the upper guide shell (34). A spring pin (36) is installed on the upper left side of the lower guide shell (311).
2. The ultra-high efficiency air purifier filter based on multi-stage composite filter media according to claim 1, characterized in that: The cover plate (14) consists of a cover body and an elastic sealing sheet fixed to the lower side of the cover body. The elastic sealing sheet of the cover plate (14) is in contact with the upper end face of the composite filter material sheet (4). A sealing gasket (323) is fixedly connected to the upper side of the rotating groove (322). The lower end face of the sealing gasket (323) is in contact with the upper curved surface of the adapter seat (312). A baffle (313) is fixedly connected to the upper right side of the lower guide shell (311). The baffle (313) is located on the right side of the composite filter material sheet (4). The upper guide shell (34) is located on the left side of the composite filter material sheet (4). The upper guide shell (34) is connected to the lower guide shell (311).
3. The ultra-high efficiency air purifier filter based on multi-stage composite filter media according to claim 2, characterized in that: The outer curved surface of the upper guide shell (34) and the inner curved surface of the lower guide shell (311) are smoothly transitioned. The exhaust pipe (314) is located on the lower side of the upper guide shell (34). The spring pin (36) consists of a pin shell, a pin block that is slidably connected inside the pin shell, and a spring installed inside the pin shell. The pin blocks of the spring pin (36) are all inserted into the pin groove (35).
4. The ultra-high efficiency air purifier filter based on multi-stage composite filter media according to claim 3, characterized in that: The synchronous grid belt (332) is located on the left side of the filter media loading groove (324), and several grid openings are provided on the inner side of the synchronous grid belt (332). The composite filter media sheet (4) is located on the right side of the filter media loading groove (324) and is attached to the synchronous grid belt (332).
5. The ultra-high efficiency air purifier filter based on multi-stage composite filter media according to claim 1, characterized in that: A warning part (5) is installed on the lower left side of the support and guide unit (3) on the left side. The warning part (5) includes a seat plate (51) fixedly connected to the lower inner wall of the housing (11). A back plate (52) is fixedly connected to the upper left side of the seat plate (51). A pair of guide strips (53) are fixedly connected to the right side of the back plate (52). A guide block (54) located on the upper side of the seat plate (51) is slidably connected to the outer side of the pair of guide strips (53). A telescopic spring (55) is fixedly connected between the left end of the guide block (54) and the right end of the back plate (52). A contact button (56) is fixedly connected to the right side of the back plate (52). A distance sensor (57) is installed in the upper hole of the back plate (52). A buzzer (58) is installed on the left side of the back plate (52). A control box (6) is installed on the front side of the housing (11).
6. The ultra-high efficiency air purifier filter based on multi-stage composite filter media according to claim 5, characterized in that: There is a distance between the guide block (54) and the contact button (56). The right inclined surface of the guide block (54) is in contact with the left exhaust pipe (314). Openings are provided on both the front and rear sides of the seat frame (15).
7. The ultra-high efficiency air purifier filter based on multi-stage composite filter media according to claim 1, characterized in that: The composite filter sheet (4) includes a macroporous protective mesh layer (41), an electrostatic adsorption layer (42) is provided on the left side of the macroporous protective mesh layer (41), an ultra-fine glass fiber layer (43) is provided on the left side of the electrostatic adsorption layer (42), an anti-scratch layer (44) is provided on the left side of the ultra-fine glass fiber layer (43), and an instant adhesive mesh layer (45) is provided between adjacent layers of the macroporous protective mesh layer (41), the electrostatic adsorption layer (42), the ultra-fine glass fiber layer (43) and the anti-scratch layer (44).
8. The ultra-high efficiency air purifier filter based on multi-stage composite filter media according to claim 7, characterized in that: The large-pore protective mesh layer (41) is a recycled polyester fiber nonwoven fabric with an average pore size of 30–50µm. The electrostatic adsorption layer (42) is composed of polypropylene microfiber with an average pore size of 4–7µm and an electret meltblown layer. The microfiber layer (43) is alkali-free glass fiber paper with an average pore size of 0.8–1.2µm. The anti-scratch layer (44) is thin cotton paper with an average pore size of 30–50µm. The quick-dissolving adhesive mesh layer (45) is a polyvinyl alcohol hot-melt fiber mesh with an average pore size of 80–120µm. The water dissolution temperature of the quick-dissolving adhesive mesh layer (45) is above 80℃, and the water dissolution time of the quick-dissolving adhesive mesh layer (45) is within 30s.
9. A preparation method for an ultra-high efficiency air purifier filter based on multi-stage composite filter media as described in claims 1-8, characterized in that, include: S1. Unwinding: Unwind the large-hole protective mesh layer (41), electrostatic adsorption layer (42), ultra-fine glass fiber layer (43), anti-scratch layer (44) and several quick-melting adhesive mesh layers (45) under constant tension. S2, spot rolling composite, after each layer is stacked in sequence, it is hot-pressed once by a hexagonal convex steel roller. The roller temperature is 165-175℃, the linear pressure is 30-40N / mm, and the speed is 25-35m / min. Each quick-melting adhesive mesh layer (45) is locally melted and instantly solidified at the convex point to form a spot bond. In this way, the large-pore protective mesh layer (41), electrostatic adsorption layer (42), ultra-fine glass fiber layer (43), and anti-scratch layer (44) are spot bonded to obtain multi-level filter material; S3. Cooling and winding: The composite multi-stage filter material is cooled to ≤30℃ on both sides by air and then wound up to obtain the master roll. S4. Cutting: The master roll is cut into individual pieces as needed to obtain the finished composite filter material sheet (4). S5. Installation: Remove the bolts and open the cover plate (14) to expose the support and guide units (3) inside the housing (11); insert the lower end of the composite filter material sheet (4) into the upper opening of the filter material loading groove (324) and make it fit with the synchronous grid belt (332) of the drive unit (33); rotate the adjustment knob (333) to drive the upper synchronous roller (331) to rotate clockwise, drive the grid belt to move in a circular motion, and drive the composite filter material sheet (4) down along the filter material loading groove (324) until it is fully installed; after completing the installation of the remaining support and guide units (3) in sequence, reset the cover plate (14).