Primary filter with replaceable filter paper
By adopting an open and closed metal outer frame and inner core structure, combined with hinges, magnetic blocks and adhesive strips, the existing primary filter disassembly and costly problems are solved, and a convenient replacement and environmentally friendly filter design is achieved.
Patent Information
- Application Number
- CN202422215043.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-10
- Publication Date
- 2025-09-02
- Estimated Expiration
- 2034-09-10
AI Technical Summary
The disassembly of existing primary filters is cumbersome and has high production costs, and cannot be directly disassembled and replaced, resulting in large pressure on solid waste treatment and increased transportation costs.
The openable and closed metal outer frame and inner core structure are adopted. The inner core consists of a filter layer and an outer cladding layer. The upper cover and the lower cover are connected by hinges and magnetic suction blocks. The support strips arranged in the inner core are fixed, and the seal is achieved using adhesive strips, which simplifies the replacement process and reduces the cost of solid waste treatment.
It realizes convenient inner core replacement, reduces production and solid waste treatment costs, extends service life and reduces air resistance, and ensures filtration effect.
Smart Images
Figure CN223287797U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of air purifiers, in particular to a primary filter with replaceable filter paper. Background Art
[0002] With the acceleration of industrialization and rising urbanization, air pollution has become a global problem. As an effective means of air purification, air filters are widely used in industrial production, domestic life, and other fields. Primary filters, as a key front-end filtration component, have the highest replacement frequency and wear rate. However, common primary filters on the market are often costly, difficult to maintain, and impose significant waste disposal pressures. Therefore, a primary filter that is both economical and environmentally friendly is needed.
[0003] In the existing technology, the common filter materials of primary air filters are non-woven filter cotton, which is soft and lacks certain strength. Therefore, during production, metal mesh, metal support frame, metal frame, etc. are covered on the filter cotton to improve the strength of the filter material. However, the filter produced in this way greatly increases the production cost and the subsequent primary filter cotton cannot be directly disassembled and replaced. In addition, for larger filter meshes, the purchase, packaging and transportation costs are also increasing. Utility Model Content
[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defects of the prior art in that the disassembly is complicated and the production cost is high, thereby providing a primary filter with replaceable filter paper.
[0005] The above technical objectives of the present invention are achieved through the following technical solutions:
[0006] A primary filter with replaceable filter paper comprises an outer frame and an inner core, the inner core being snap-fitted into the outer frame, the outer frame comprising an upper cover and a lower cover being hingedly arranged, a through air inlet being provided in the upper cover, a plurality of upper support bars being provided at the inner bottom of the upper cover, a through air outlet being provided in the lower cover, a plurality of lower support bars being provided near the top of the lower cover, the inner core being in the form of a plurality of inverted V-shapes connected end to end, the upper support bars being provided between two adjacent V-shapes, the lower support bars being provided corresponding to each V-shaped top angle, and the inner core comprising an encapsulated filter layer and an outer cladding.
[0007] By adopting the above technical solution, the filter consists of an openable and closable metal outer frame and an inner core. The frame is divided into two parts, an upper cover and a lower cover, which are hingedly arranged. It can be opened and closed on one side, which is convenient for disassembly and replacement. The inner core is a primary filter cotton material including a filter layer and an outer layer. The filter layer realizes the filtering function, and the outer layer is easy to hook with the outer frame to realize sealing operation.
[0008] Furthermore, the upper cover and the lower cover are connected by a plurality of hinges, each of which includes an upper hinge block, a lower hinge block and a hinge shaft. The upper hinge block is embedded in the side surface of the upper cover, and the lower hinge block is embedded in the side surface of the lower cover. The hinge shaft and the lower hinge block are integrally arranged. A hinge rotating cylinder is provided on the upper hinge block corresponding to the hinge shaft, and a hinge gap is left between the upper cover and the lower cover for the hinge shaft.
[0009] By adopting the above technical solution, the hinge part is basically embedded in the sides of the upper cover and the lower cover, and the hinge shaft and the hinge drum can also be accommodated in the hinge gap, ensuring that there is no obvious protrusion on the outside of the filter, which facilitates the installation and coordination of the filter as a whole with the ventilation equipment.
[0010] Furthermore, the upper cover and the lower cover are connected by a magnetic block. There are multiple magnetic blocks and they are arranged in an array along the length direction of the lower cover. The magnetic blocks are embedded on the side of the top of the lower cover away from the hinge.
[0011] By adopting this technical solution, the upper and lower covers are connected magnetically, allowing a single person to open and close them, making it easy to replace the inner core. The replaced inner core does not require additional metal support and can be disposed of as ordinary solid waste, saving on solid waste disposal costs. Using biodegradable materials can also achieve environmental protection and pollution-free operation.
[0012] Furthermore, the upper support bar is arranged along the width direction of the upper cover and is arranged in an array along the length direction of the upper cover. The two ends of the upper support bar are connected to the inner side edge of the upper cover through a connecting bar. The top end of the connecting bar is fixed to the inner side wall of the upper cover. The bottom end of the connecting bar is fixed to one end of the upper support bar. The length of the upper support bar is smaller than the width of the air inlet.
[0013] By adopting the above technical solution, the upper support bar is fixed to the bottom of the upper cover through the connecting bar, which can ensure the folding depth of the inner core to a greater extent, thereby increasing the usage of the inner core in a limited space.
[0014] Furthermore, the upper support bar is a cylindrical rod or a rectangular bar, and when the upper support bar is a cylindrical rod, the diameter is 4 mm.
[0015] By adopting the above technical solution, the staggered arrangement of the upper support bars and the lower support bars fixes the inner core, which can increase the usage of the inner core in a limited space, extend the service life after a single replacement of the filter material, and reduce the wind resistance of the overall filter. The upper support bars and the lower support bars can be arranged according to the bending height of the inner core to adapt to inner cores of multiple sizes.
[0016] Furthermore, a handle groove is provided on the inner wall of the upper cover away from the hinge, and the handle groove is arc-shaped.
[0017] By adopting the above technical solution, the handle groove facilitates opening and closing of the upper cover, so that the upper cover and the lower cover can be directly disassembled and separated, realizing the convenience of replacing the inner core.
[0018] Furthermore, the lower support bar is arranged along the width direction of the lower cover and is arranged in an array along the length direction of the lower cover. Fitting rods are also provided at both ends of the lower cover near the length direction. The fitting rods are arranged along the width direction of the lower cover, and the height of the fitting rods in the lower cover is lower than the height of the lower support bar.
[0019] Furthermore, an adhesive strip is installed on the inner wall of the lower cover. The adhesive strip is mouth-shaped and is arranged to fit the inner wall of the lower cover. The adhesive strip has snap-in holes at both ends corresponding to the lower support strip, and a vertical snap-in seam extends below the snap-in holes.
[0020] By adopting the above technical solution, adhesive strips are set around the inner wall of the lower cover. The adhesive strips are hook-surface Velcro. Therefore, during the installation of the inner core, the inner core and the adhesive strips can be pressed together, so that the hook-surface Velcro hooks the outer layer tightly, thereby sealing on all four sides; the snap-fit holes and snap-fit seams on the adhesive strip facilitate the cooperation between the adhesive strip and the lower support strip, making it convenient to directly glue the adhesive strip.
[0021] In summary, the technical solution of the present utility model has the following advantages:
[0022] 1. The utility model provides a primary filter with replaceable filter paper. The outer frame is hinged with a hinge, which can be opened and closed by one person at one end, so that the outer frame can be opened on one side to replace the inner core. Magnetic blocks are added to fix the upper cover and the lower cover. After the inner core is replaced, the position of the inner core can be firmly fixed to avoid shaking and dislocation of the inner core during use.
[0023] 2. The utility model provides a primary filter with replaceable filter paper, and an adhesive strip is provided to fit with the hook surface of the inner core, thereby achieving sealing around the inner core and ensuring the filtering effect.
[0024] 3. The primary filter with replaceable filter paper provided by the utility model is provided with staggered upper and lower support bars to fix the inner core, thereby increasing the usage of the inner core in a limited space, extending the service life after a single replacement of the filter material, and reducing the wind resistance of the overall filter. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0026] Figure 1This is a schematic diagram of the overall structure of a primary filter with replaceable filter paper provided in one embodiment of the present invention;
[0027] Figure 2 This is a schematic diagram of the exploded structure of a primary filter with replaceable filter paper provided in one embodiment of the present invention;
[0028] Figure 3 The present invention is a schematic cross-sectional view of a primary filter with replaceable filter paper provided in one embodiment of the present invention.
[0029] Description of reference numerals:
[0030] 1. Outer frame; 2. Upper cover; 21. Air inlet; 22. Upper support bar; 221. Connecting bar; 23. Handle groove; 3. Lower cover; 31. Air outlet; 32. Lower support bar; 33. Laminating rod; 34. Adhesive strip; 341. Snap-in hole; 342. Snap-in seam; 4. Inner core; 5. Filter layer; 6. Outer cover; 7. Hinge; 71. Upper hinge block; 711. Hinge drum; 72. Lower hinge block; 73. Hinge shaft; 8. Magnetic block. DETAILED DESCRIPTION
[0031] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.
[0032] A primary filter with replaceable filter paper, such as Figure 1 and Figure 2 As shown, it includes an outer frame 1 and an inner core 4. The inner core 4 is snap-fitted into the outer frame 1. The outer frame 1 includes a hinged upper cover 2 and a lower cover 3. The inner core 4 includes an encapsulated filter layer 5 and an outer cladding 6. The filter consists of an openable metal outer frame 1 and an inner core 4. The frame is divided into two parts, an upper cover 2 and a lower cover 3, which are hinged and can be opened and closed from one side, facilitating disassembly and replacement. The inner core 4 is made of primary filter cotton material and includes a filter layer 5 and an outer cladding 6. The outer cladding 6 is coated on the outside of the filter layer 5, which performs the filtering function. The outer cladding 6 is easily hooked with the outer frame 1 to achieve a sealing operation.
[0033] The upper cover 2 is further provided with two handle grooves 23 on one side away from the hinge 7. The handle grooves 23 are arc-shaped. The handle grooves 23 facilitate opening and closing the upper cover 2, thereby being able to directly disassemble and separate the upper cover 2 and the lower cover 3, and realizing the convenience of replacing the inner core 4.
[0034] A through air inlet 21 is provided in the upper cover 2, and a plurality of upper support bars 22 are provided at the bottom of the upper cover 2. A through air outlet 31 is provided in the lower cover 3, and a plurality of lower support bars 32 are provided near the top of the lower cover 3. The upper support bars 22 and the lower support bars 32 are arranged in an alternating manner, and the inner core 4 is in the form of multiple inverted V shapes connected end to end. The upper support bar 22 is arranged between two adjacent V shapes, and the lower support bar 32 is arranged corresponding to each V-shaped top angle.
[0035] like Figure 2 As shown, the upper cover 2 and the lower cover 3 are connected by multiple hinges 7. Each hinge 7 includes an upper hinge block 71, a lower hinge block 72, and a hinge shaft 73. The upper hinge block 71 is embedded in the left side of the upper cover 2, and the lower hinge block 72 is embedded in the left side of the lower cover 3. The hinge shaft 73 is integrally provided with the lower hinge block 72. A hinge cylinder 711 is provided on the upper hinge block 71 corresponding to the hinge shaft 73. A hinge gap is left between the upper cover 2 and the lower cover 3 for the hinge shaft 73. The hinge 7 is partially embedded in the side surfaces of the upper cover 2 and the lower cover 3, and the hinge shaft 73 and the hinge cylinder 711 can also be accommodated in the hinge gap, ensuring that there are no obvious protrusions on the outside of the filter, facilitating the installation and matching of the filter as a whole with the ventilation equipment.
[0036] The upper and lower covers 2 and 3 are connected by a magnetic block 8. Multiple magnetic blocks 8 are arranged in an array along the length of the lower cover 3. These blocks are embedded in the top of the right long side of the lower cover 3, away from the hinge 7. This magnetic connection allows a single person to open and close the upper and lower covers 3, making it easy to replace the inner core 4. The replaced inner core 4 lacks additional metal support and can be disposed of as ordinary solid waste, saving on waste disposal costs. Using biodegradable materials for the inner core 4 further enhances environmental friendliness and pollution-free operation.
[0037] like Figure 2 and Figure 3 As shown, upper support bars 22 are arranged along the width of the upper cover 2 and arranged in an array along the length of the upper cover 2. The upper support bars 22 are cylindrical or rectangular bars. When cylindrical, the diameter of the upper support bars 22 is 4 mm. The ends of the upper support bars 22 are connected to the inner side of the upper cover 2 via connecting bars 221. The top of the connecting bar 221 is fixed to the inner side wall of the upper cover 2, and the bottom of the connecting bar 221 is fixed to one end of the upper support bar 22. The length of the upper support bar 22 is less than the width of the air inlet 21. The upper support bars 22 are fixed to the bottom of the upper cover 2 via the connecting bars 221, which can greatly ensure the folding depth of the inner core 4, thereby increasing the amount of inner core 4 used within the limited space.
[0038] The lower support bar 32 is arranged along the width direction of the lower cover 3 and is arranged in an array along the length direction of the lower cover 3. Fitting rods 33 are also provided at both ends of the lower cover 3 near the length direction. The fitting rods 33 are arranged along the width direction of the lower cover 3. The height of the fitting rods 33 in the lower cover 3 is lower than the height of the lower support bar 32.
[0039] The staggered arrangement of the upper support bar 22 and the lower support bar 32 fixes the inner core 4, which can increase the usage of the inner core 4 in a limited space, extend the service life after a single replacement of the filter material, and reduce the wind resistance of the overall filter. The upper support bar 22 and the lower support bar 32 can be arranged according to the bending height of the inner core 4 to adapt to inner cores 4 of multiple sizes.
[0040] like Figure 2 and Figure 3 As shown, the inner wall of the lower cover 3 is also installed with an adhesive strip 34. The adhesive strip 34 is mouth-shaped and fits closely to the inner wall of the lower cover 3. The adhesive strip 34 is provided around the inner wall of the lower cover 3. The adhesive strip 34 is a hook-shaped Velcro. Therefore, during the installation of the inner core 4, the inner core 4 can be pressed against the adhesive strip 34, so that the hook-shaped Velcro hooks the outer cover 6 tightly, achieving a four-sided sealing effect. The adhesive strip 34 has engaging holes 341 at both ends corresponding to the lower support bar 32. A vertical engaging seam 342 extends below the engaging holes 341. The engaging holes 341 and engaging seam 342 on the adhesive strip 34 facilitate the mating of the adhesive strip 34 with the lower support bar 32, facilitating direct attachment of the adhesive strip 34.
[0041] The working principle and usage of this replaceable primary filter are as follows: an upper support bar 22 is installed in the upper cover 2, a lower support bar 32 and a fitting bar are installed in the lower cover 3, the upper cover 2 and the lower cover 3 are hingedly installed, and a magnetic block 8 is installed on the top right side of the lower cover 3; before installing the inner core 4, an adhesive strip 34 is affixed to the inside of the lower cover 3, the assembled inner core 4 is placed in the lower cover 3 and hooked with the adhesive strip 34 on all sides, then the upper cover 2 is closed, the upper support bar 22 and the lower support bar 32 are engaged with the bend of the inner core 4 and fixed; when replacing, the upper cover 2 is opened through the handle groove 23, the inner core 4 is taken out and can be replaced.
[0042] The foregoing description shows and describes preferred embodiments of the present invention. As previously mentioned, it should be understood that the present invention is not limited to the form disclosed herein and should not be construed as excluding other embodiments. Instead, the present invention can be used in various other combinations, modifications, and environments and can be modified within the scope of the present invention as taught herein or through the techniques or knowledge of the relevant art. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention are intended to be protected by the claims appended hereto.
Claims
1. A primary filter with replaceable filter paper, characterized in that: The invention comprises an outer frame (1) and an inner core (4), wherein the inner core (4) is snap-fitted and arranged in the outer frame (1), and the outer frame (1) comprises an upper cover (2) and a lower cover (3) which are hingedly arranged, an air inlet (21) penetrating therein is provided in the upper cover (2), a plurality of upper support bars (22) are further provided at the inner bottom of the upper cover (2), an air outlet (31) penetrating therein is provided in the lower cover (3), a plurality of lower support bars (32) are further provided near the top of the lower cover (3), the inner core (4) is in the form of a plurality of inverted V-shapes connected end to end, the upper support bars (22) are arranged between two adjacent V-shapes, and the lower support bars (32) are arranged at each V-shaped vertex, and the inner core (4) comprises a filter layer (5) and an outer cladding layer (6) which are packaged.
2. A primary filter with replaceable filter paper according to claim 1, characterized in that: The upper cover (2) and the lower cover (3) are connected via a plurality of hinges (7), each of the hinges (7) comprising an upper hinge block (71), a lower hinge block (72) and a hinge shaft (73), the upper hinge block (71) being embedded in the side of the upper cover (2), the lower hinge block (72) being embedded in the side of the lower cover (3), the hinge shaft (73) being integrally arranged with the lower hinge block (72), a hinge rotating cylinder (711) being provided on the upper hinge block (71) corresponding to the hinge shaft (73), and a hinge gap being left between the upper cover (2) and the lower cover (3) for the hinge shaft (73).
3. A primary filter with replaceable filter paper according to claim 2, characterized in that: The upper cover (2) and the lower cover (3) are also connected via a magnetic block (8), a plurality of magnetic blocks (8) are provided and arranged in an array along the length direction of the lower cover (3), and the magnetic blocks (8) are embedded on a side of the top of the lower cover (3) away from the hinge (7).
4. A primary filter with replaceable filter paper according to claim 1, characterized in that: The upper support bar (22) is arranged along the width direction of the upper cover (2) and arranged in an array along the length direction of the upper cover (2); both ends of the upper support bar (22) are connected to the inner side of the upper cover (2) through a connecting bar (221); the top end of the connecting bar (221) is fixed to the inner side wall of the upper cover (2); the bottom end of the connecting bar (221) is fixed to one end of the upper support bar (22); and the length of the upper support bar (22) is smaller than the width of the air inlet (21).
5. A primary filter with replaceable filter paper according to claim 4, characterized in that: The upper support bar (22) is a cylindrical rod or a rectangular bar. When the upper support bar (22) is a cylindrical rod, the diameter is 4 mm.
6. A primary filter with replaceable filter paper according to claim 2, characterized in that: A handle groove (23) is further provided on the inner wall of the upper cover (2) away from the hinge (7), and the handle groove (23) is arc-shaped.
7. The primary filter with replaceable filter paper according to claim 1, characterized in that: The lower support bars (32) are arranged along the width direction of the lower cover (3) and are arranged in an array along the length direction of the lower cover (3). Fitting rods (33) are also arranged at both ends of the lower cover (3) near the length direction. The fitting rods (33) are arranged along the width direction of the lower cover (3). The height of the fitting rods (33) in the lower cover (3) is lower than the height of the lower support bars (32).
8. A primary filter with replaceable filter paper according to claim 7, characterized in that: The inner wall of the lower cover (3) is also provided with an adhesive strip (34), which is mouth-shaped and is arranged to fit the inner wall of the lower cover (3). The adhesive strip (34) is provided with snap-fit holes (341) at both ends corresponding to the lower support strip (32), and a vertical snap-fit seam (342) extends below the snap-fit hole (341).