Filter folding cartridge

Abstract

This invention provides a foldable filter element, including a mesh frame and a filter element body disposed within the mesh frame. The mesh frame includes a left frame and a right frame, with one side of the left and right frames hinged together. The filter element body includes a left filter element and a right filter element, with the left filter element detachably mounted to the mounting portion of the left frame and the right filter element detachably mounted to the mounting portion of the right frame. Each end of the left and right frames corresponding to its mounting portion has a flip cover. By designing the mesh frame as hinged left and right frames and dividing the filter element body into detachable left and right filter elements, the overall foldable function of the filter element is achieved. The detachable design of the filter element body means that after the filter element's lifespan expires, only the filter element body needs to be replaced; the plastic mesh frame component can be reused, reducing usage costs and resource waste. The flip cover structure provides reliable axial restraint for the filter element body, preventing it from detaching during use and avoiding the need for glue to fix the flip cover to the end face of the filter element.

Description

Technical Field

[0001] This invention relates to the field of filter technology, and in particular to a pleated filter element. Background Technology

[0002] Existing filter cartridges typically use an upper and lower end cap design, with the filter cartridge itself providing the central support. This method involves joining long, strip-shaped filter cartridges together, covering them with a PET mesh, and fixing them into a cylindrical shape. After applying adhesive to the upper and lower end caps, the filter cartridge is assembled onto the caps. This method makes it impossible to replace the filter cartridge separately, and the cartridges cannot be folded, resulting in excessive space consumption during transportation. Furthermore, since the upper and lower end caps are bonded with hot melt adhesive, they are greatly affected by environmental temperature and humidity. High and low temperature tests are required to simulate transportation to verify the reliability of the adhesive and prevent it from falling off, making the process cumbersome. Summary of the Invention

[0003] To address the aforementioned problems, the purpose of this invention is to provide a pleated filter element.

[0004] This invention is achieved using the following method: a folded filter element, comprising a mesh frame and a filter element body disposed within the mesh frame. The mesh frame includes a left frame and a right frame, with one side of the left and right frames hinged together by a first hinge member, and the other side of the left and right frames provided with locking members for mutual locking. The filter element body includes a left filter element and a right filter element, each with a mounting portion. The left filter element is detachably mounted to the mounting portion of the left frame, and the right filter element is detachably mounted to the mounting portion of the right frame. A flip cover is provided at one end of each of the left and right frames corresponding to the mounting portion, and a first connecting member is provided between the flip cover and the left or right frame to fix the flip cover to the left or right frame, thereby preventing the left or right filter element from detaching from the corresponding mounting portion.

[0005] Furthermore, the left frame includes a left main body and a left pressure cover, and the right frame includes a right main body and a right pressure cover. The left main body and the right main body are hinged to each other on their adjacent sides. The left pressure cover is hinged to the side of the left main body away from the right main body, and the right pressure cover is hinged to the side of the right main body away from the left main body. A second connecting portion is provided between the side of the left pressure cover away from its hinge portion and the left main body to fix the left main body and the left pressure cover. A third connecting portion is provided between the side of the right pressure cover away from its hinge portion and the right main body to fix the right main body and the right pressure cover. The mounting portion is formed between the left main body and the left pressure cover, and the mounting portion is formed between the right main body and the right pressure cover.

[0006] Furthermore, the left main body and the left pressure cover are provided with the flip cover at the opening end of the mounting portion, and the right main body and the right pressure cover are provided with the flip cover at the opening end of their mounting portions.

[0007] Furthermore, the left main body, the right main body, and the corresponding flip cover are hinged together. The first connecting member includes a first hinge. The outer end face of the left main body is connected to the hinge point of the flip cover, and the outer end face of the right main body is connected to the hinge point of the corresponding flip cover. The first connecting member also includes a first buckle and a second buckle. The first buckle is provided on the flip cover, and the left main body and the right main body are both provided with a second buckle. And / or, the left pressure cover and the right pressure cover are also provided with a second buckle. The first buckle and the second buckle cooperate to fix the flip cover to the end face of the corresponding left main body, the left pressure cover, the right main body, and the right pressure cover.

[0008] Furthermore, the end face of the flip cover facing the mounting part is provided with a sealing ring, and the flip cover is semi-circular; the first buckle body is symmetrically arranged on both sides of the two ends of the flip cover in the radial direction, and the corresponding second buckle body is arranged on the corresponding positions of the left pressure cover, right pressure cover, left main body, and right main body; the first hinge is arranged on the outside of the flip cover and is located at the center line of symmetry.

[0009] Furthermore, the second connecting portion includes a third fastener located at one end of the left pressure cover in the circumferential direction, and a fourth fastener located at one end of the left main body in the circumferential direction that is hinged to the right main body. The third fastener and the fourth fastener are fastened together to fix the left pressure cover to the left main body. The third connecting portion includes a fifth fastener located at one end of the right pressure cover in the circumferential direction, and a sixth fastener located on the right main body in the circumferential direction opposite to the fifth fastener. The fifth fastener and the sixth fastener are fastened together to fix the right pressure cover to the right main body. After the left pressure cover is fixed, it is located in the inner circle of the left main body. The outer sides of both ends of the left pressure cover in the circumferential direction are provided with an integral retaining edge along the diameter direction. The third fastener is provided on one side of the retaining edge of the left pressure cover, and the retaining edge on the other side is provided with a second hinge connecting to the left main body. The left main body and the left pressure cover form a semi-circular mounting part. After the right pressure cover is fixed, it is located in the inner circle of the right main body. The right main body and the right pressure cover form a semi-circular mounting part. The outer sides of both ends of the right pressure cover in the circumferential direction are provided with an integral retaining edge along the diameter direction. The fifth fastener is provided on one side of the retaining edge of the right pressure cover, and the retaining edge on the other side is provided with a second hinge connecting to the right main body. The right main body and the right pressure cover form a semi-circular mounting part.

[0010] Furthermore, the locking component includes a first fastener disposed on the outer surface of one end of the left frame and a second fastener disposed at the corresponding position on the right frame. The first fastener and the second fastener engage with each other to fix the movable ends of the left frame and the right frame.

[0011] Furthermore, both ends of the left and right filter elements are fixed with limit caps. The limit caps have limit holes on their outer sides when installed. The left and right main bodies have locking ribs on their inner circumferential surfaces at both ends in the circumferential direction. The limit caps have locking ribs on their outer sides when installed. The left and right main bodies have limit holes on their inner circumferential surfaces at both ends in the circumferential direction. The locking ribs can pass through the corresponding limit holes to circumferentially limit the left and right filter elements.

[0012] Furthermore, the limiting cover on the left filter element body has a sealing gasket at the end opposite to the left filter element body. After being assembled into the mounting part in the left frame body, the sealing gasket abuts against the corresponding edge of the left pressure cover. The limiting cover on the right filter element body also has a sealing gasket at the end opposite to the right filter element body. After being assembled into the mounting part in the right frame body, the sealing gasket abuts against the corresponding edge of the right pressure cover.

[0013] Furthermore, a first end plate is integrally connected to the lower end of the left main body of the left frame, a first end plate is integrally connected to the lower end of the right main body of the right frame, a second end plate is integrally connected to the lower end of the left pressure cover of the left frame, and a second end plate is integrally connected to the lower end of the right pressure cover of the right frame. After the left frame and the right frame are assembled together, the two first end plates form a circle, and the two second end plates form a circle. The two second end plates are located on the upper side of the first end plates. Each of the first end plates is provided with a semi-circular sealing ring, which is located at the lower end of the corresponding mounting part and abuts against the lower ends of the corresponding left and right filter elements.

[0014] The beneficial effects of this invention are as follows: This invention provides a pleated filter element, which, compared with the prior art, has at least the following technical effects: 1. By designing the mesh frame as hinged left and right frames and dividing the filter element body into detachable left and right filter element bodies, the entire filter element is designed to be foldable, significantly reducing transportation and storage space. Simultaneously, the detachable design of the filter element body means that after the filter element reaches the end of its lifespan, only the filter element body needs to be replaced; the plastic mesh frame components can be reused, reducing operating costs and resource waste. The flip-top structure provides reliable axial restraint for the filter element body, preventing it from detaching during use, and the flip-top can be fixed to the end face of the filter element without the need for glue.

[0015] 2. By further subdividing the left and right frames into the main body and the pressure cap, and using hinges and snap-fit ​​connections, a stable and easy-to-open semi-circular mounting part is formed. This "main body + pressure cap" structure makes the installation and removal of the filter element extremely simple, requiring no tools, and providing great convenience for users' daily maintenance and replacement.

[0016] 3. By employing a hinge and latch as the primary connecting element for the flip cover, the system achieves a function where one end of the flip cover can rotate and the other end can be quickly locked. This structure not only ensures reliable connection but also facilitates operation. Users can simply move the latch to open or close the flip cover, significantly improving the efficiency of filter replacement. Simultaneously, the specific positioning of the hinge and latch (outer side of the end face, center of symmetry) optimizes the force distribution, ensuring the sealing and stability of the flip cover after it is closed.

[0017] 4. By setting limiting caps with limiting holes at both ends of the filter element body and setting locking ribs at corresponding positions on the frame body (or vice versa), a keyway-type circumferential limiting structure is formed. This structure can accurately fix the circumferential position of the filter element body, preventing it from rotating or shifting under the action of airflow, ensuring the effective utilization of the filtration area and the stability of the overall filtration performance.

[0018] 5. By setting a sealing gasket at the end of the limiting cover and abutting it against the retaining edges of the left and right pressure covers, a reliable end-face sealing structure is formed. This sealing method replaces the traditional glue application process, fundamentally eliminating the risk of hot melt adhesive falling off due to the influence of ambient temperature and humidity. It eliminates the need for complex high and low temperature reliability tests, simplifies the production process, and greatly improves the long-term reliability of the product under harsh working conditions. Attached Figure Description

[0019] Figure 1 This is an exploded view of a pleated filter element according to the present invention.

[0020] Figure 2 This is a three-dimensional structural diagram of a pleated filter element according to the present invention.

[0021] Figure 3 This is a schematic diagram of the unfolded state of the left and right frames of a folded filter element according to the present invention.

[0022] Figure 4 This is a schematic diagram of the left and right pressure caps of a folded filter element of the present invention after they have been unfolded.

[0023] Figure 5 This is an exploded view of the left frame and left filter element body of a folded filter element according to the present invention.

[0024] Figure 6This is an exploded view of the right frame and right filter element body of a folded filter element according to the present invention.

[0025] Figure 7 This is a schematic diagram of the left filter element of a folded filter element of the present invention after it has been unfolded flat.

[0026] Figure 8 This is a schematic diagram of the flip cover on the left frame of a folded filter element of the present invention after it has been opened.

[0027] Explanation of reference numerals: 1. Left frame; 11. Left main body; 12. Left pressure cover; 13. Second connecting part; 131. Third buckle; 14. First hinge; 2. Right frame; 21. Right main body; 22. Right pressure cover; 23. Third connecting part; 231. Fifth fastener; 232. Sixth fastener; 3. Locking element; 31. First latch; 32. Second latch; 4. Left filter element; 5. Right filter element; 6. Flip-top; 7. First connector; 71. First hinge; 72. First fastener; 73. Second fastener; 8. Sealing ring; 9. Limiting cover; 91. Limiting hole; 92. Locking rib; 93. Sealing gasket; 10. Second hinge component. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0029] Please see Figures 1 to 8A pleated filter element includes a mesh frame and a filter element body disposed within the mesh frame. The mesh frame includes a left frame 1 and a right frame 2. One side of the left frame 1 and the right frame 2 is hinged to each other via a first hinge 14. The other side of the left frame 1 and the right frame 2 is provided with a locking member 3 for locking them together. The filter element body includes a left filter element 4 and a right filter element 5. Both the left frame 1 and the right frame 2 are provided with mounting portions. The left filter element 4 is detachably installed on the mounting part of the left frame 1, and the right filter element 5 is detachably installed on the mounting part of the right frame 2. Each end of the left frame 1 and the right frame 2 corresponding to its mounting part is provided with a flip cover 6. A first connecting member 7 is provided between the flip cover 6 and the left frame 1 or the right frame 2 to fix the flip cover 6 to the left frame 1 or the right frame 2, thereby preventing the left filter element 4 and the right filter element 5 from detaching from their respective mounting parts. By designing the mesh frame as hinged left and right frames and dividing the filter element body into detachable left and right filter elements, the overall foldable function of the filter element is achieved, greatly reducing transportation and storage space. Simultaneously, the detachable design of the filter element body means that after the filter element's lifespan expires, only the filter element body needs to be replaced; the plastic mesh frame component can be reused, reducing usage costs and resource waste. The flip-top structure provides reliable axial restraint for the filter element, preventing it from coming loose during use and avoiding the need for glue to fix the flip-top to the end face of the filter element. In practical applications, the hinge between the left frame 1 and the right frame 2 is not limited to a pin; flexible connecting pieces or one-piece thin-walled hinges can also be used. The left filter element 4 and the right filter element 5 have the same structure.

[0030] Please see Figures 1 to 8Furthermore, the left frame 1 includes a left main body 11 and a left pressure cover 12, and the right frame 2 includes a right main body 21 and a right pressure cover 22. The left main body 11 and the right main body 21 are hinged to each other on their adjacent sides. The left main body 11 is hinged to the left pressure cover 12 on its side away from the right main body 21, and the right main body 21 is hinged to the right pressure cover 22 on its side away from the left main body 11. A second connecting part 13 is provided between the left pressure cover 12 and the left main body 11 on its side away from its hinge to fix the left main body 11 and the left pressure cover 12. A third connecting part 23 is provided between the right pressure cover 22 and the right main body 21 on its side away from its hinge to fix the right main body 21 and the right pressure cover 22. The mounting part is formed between the left main body 11 and the left pressure cover 12, and the mounting part is formed between the right main body 21 and the right pressure cover 22. By further subdividing the left and right frames into main bodies and pressure caps, and using hinged and snap-fit ​​connections, a robust and easily openable semi-circular mounting section is formed. This "main body + pressure cap" structure makes the installation and removal of the filter element extremely simple, requiring no tools and greatly facilitating daily maintenance and replacement for users. In practical applications, the hinges between the left main body 11 and the left pressure cap 12, and between the right main body 21 and the right pressure cap 22, can also employ a detachable pin structure, allowing the pressure caps to be completely removed for deep cleaning.

[0031] Please see Figures 1 to 8 Furthermore, the left main body 11 and the left pressure cover 12 are provided with the flip cover 6 at the opening end of the mounting portion, and the right main body 21 and the right pressure cover 22 are provided with the flip cover 6 at the opening end of their mounting portions. A single flip cover 6 can simultaneously seal and fix the entire semi-circular mounting portion port formed by the main body and the pressure cover, resulting in a simpler structure and more efficient operation.

[0032] Please see Figures 1 to 8 Furthermore, the left main body 11 and the right main body 21 are respectively hinged to the corresponding flip cover 6. The first connecting member 7 includes a first hinge 71, which is connected to the outer end face of the left main body 11 or the right main body 21 at the corresponding position of the flip cover 6. The first connecting member 7 also includes a first buckle 72 and a second buckle 73. The first buckle 72 is disposed on the flip cover 6, while the second buckle 73 is disposed on the left main body 11 and the right main body 21, or further disposed on the left pressure cover 12 and the right pressure cover 22. Through the mutual cooperation of the first buckle 72 and the second buckle 73, the flip cover 6 can be firmly fixed to the end faces of the left main body 11, the left pressure cover 12, the right main body 21, and the right pressure cover 22. In practical applications, the first buckle 72 can be an elastic cantilever hook, and the second buckle 73 can be a slot or a protrusion. To increase strength and lifespan, the hinge and buckle can be made by metal insert injection molding.

[0033] Please see Figures 1 to 8 Furthermore, the flip cover 6 has a sealing ring 8 on its end face facing the mounting part, and the flip cover 6 is semi-circular; the first fastener 72 is symmetrically arranged on both sides of the flip cover 6 in the radial direction, and the corresponding second fastener 73 is arranged on the left pressure cover 12, right pressure cover 22, left main body 11, and right main body 21; the first hinge 71 is located on the outside of the flip cover 6 and at the center line of symmetry. The sealing ring 8 ensures the airtightness of the filter element end. The symmetrical arrangement of the fasteners makes the force even after the flip cover is closed, resulting in a better sealing effect. The hinge is located at the center of symmetry on the outside, so that the flip cover can be opened outward like a door without occupying internal space, and the opening and closing action is smooth.

[0034] Please see Figures 1 to 8 Furthermore, the second connecting portion 13 includes a third fastener 131 located at one circumferentially upward end of the left pressure cover 12, and a fourth fastener located at one circumferentially upward end of the left main body 11 that is hinged to the right main body 21. The third fastener 131 and the fourth fastener are interlocked to fix the left pressure cover 12 to the left main body 11. The third connecting portion 23 includes a fifth fastener 231 located at one circumferentially upward end of the right pressure cover 22, and a sixth fastener 232 located on the right main body 21 opposite to the fifth fastener 231. The fifth fastener 231 and the sixth fastener 232 are interlocked to fix the right pressure cover 22 to the right main body 21. Besides using snap fasteners, the second and third connecting portions can also use bolt connections or quick clamps. In practical applications, multiple fastening points can be provided on the pressure cover to increase the connection strength.

[0035] Please see Figures 1 to 8After the left pressure cover 12 is fixed, it is located in the inner ring of the left main body 11. The outer sides of both ends of the left pressure cover 12 in the circumferential direction are provided with an integral baffle along the diameter direction. The third fastener 131 is provided on the baffle on one side of the left pressure cover 12, and the baffle on the other side is provided with a second hinge 10 connected to the left main body 11. The left main body 11 and the left pressure cover 12 form a semi-circular mounting part. After the right pressure cover 22 is fixed, it is located in the inner ring of the right main body 21. The right main body 21 and the right pressure cover 22 form a semi-circular mounting part. The outer sides of both ends of the right pressure cover 22 in the circumferential direction are provided with an integral baffle along the diameter direction. The fifth fastener 231 is provided on the baffle on one side of the right pressure cover 22, and the baffle on the other side is provided with a second hinge 10 connected to the right main body 21. The right main body 21 and the right pressure cover 22 form a semi-circular mounting part. The design of the pressure cap located on the inner ring of the main body results in a smooth overall shape without any abrupt structural features. The integrated retaining edge not only provides the structural basis for connection and hinge, but also serves to form the mounting section and seal the gasket on the limiting cover of the filter element to ensure filtration efficiency. The second hinge 10 can be a pin hole integrally formed with the left pressure cap 12, which mates with the pin on the left main body 11.

[0036] Please see Figures 1 to 8 Furthermore, the locking component 3 includes a first latch 31 located on the outer surface of one circumferential end of the left frame 1, and a second latch 32 located at a corresponding position on the right frame 2. The first latch 31 and the second latch 32 engage with each other to secure the movable ends of the left frame 1 and the right frame 2. This provides a simple and convenient locking solution for the left and right frames. The user only needs to close the two half-frames, and the latches will automatically engage, or the latches can be opened to fold the frame. The first latch 31 can be a snap or a hook, and the second latch 32 can be a hook or a groove. In practical applications, the locking component can also use magnetic attraction instead of snaps to achieve a quieter closing operation. The first connecting part of the flip cover can also be entirely magnetic, or a knob-type lock can be used.

[0037] Please see Figures 1 to 8Furthermore, both ends of the left filter element 4 and the right filter element 5 are fixed with limiting caps 9. The limiting caps 9 have limiting holes 91 on their outer sides in the installed state. The left main body 11 and the right main body 21 each have locking ribs 92 on their inner circumferential surfaces at both ends in the circumferential direction. The locking ribs 92 can pass through the corresponding limiting holes 91 to circumferentially limit the left filter element 4 and the right filter element 5, thus precisely fixing the filter elements circumferentially. Through a simple hole-rib fit structure, the rotation of the filter elements under the impact of airflow is effectively prevented, ensuring the stability of filtration. This structure is easy to manufacture and assemble. In practical applications, the number and shape of the limiting holes 91 and locking ribs 92 can be adjusted as needed, for example, using shapes with better anti-rotation effects such as triangles or trapezoidal cross-sections.

[0038] Please see Figures 1 to 8 Furthermore, the end of the limiting cover 9 on the left filter element 4 facing away from the left filter element 4 is provided with a sealing gasket 93. After being assembled into the mounting part inside the left frame 1, the sealing gasket 93 abuts against the corresponding edge of the left pressure cover 12. The end of the limiting cover 9 on the right filter element 5 facing away from the right filter element 5 is also provided with a sealing gasket 93. After being assembled into the mounting part inside the right frame 2, the sealing gasket 93 abuts against the corresponding edge of the right pressure cover 22. The circumferential end face sealing between the sealing gasket 93 and the pressure cover edge is achieved by the compression between the sealing gasket 93 and the pressure cover edge, so as to ensure the sealing effect and ensure effective filtration. In practical applications, the sealing gasket 93 can be a foam or rubber gasket pasted on the limiting cover 9, or it can be a TPE thermoplastic elastomer sealing ring that is combined with the limiting cover 9 through a secondary injection molding process. To enhance the sealing effect, raised sealing ribs can be designed on the edge.

[0039] Please see Figures 1 to 8 Furthermore, a first end plate is integrally connected to the lower end of the left main body 11 of the left frame 1, and a first end plate is integrally connected to the lower end of the right main body 21 of the right frame 2. A second end plate is integrally connected to the lower end of the left pressure cover 12 of the left frame 1, and a second end plate is integrally connected to the lower end of the right pressure cover 22 of the right frame 2. After the left frame 1 and the right frame 2 are assembled together, the two first end plates form a circle, and the two second end plates form a circle. The two second end plates are located on the upper side of the first end plates. Each of the first end plates is provided with a semi-circular sealing ring 8, which is located at the lower end of the corresponding mounting part and abuts against the lower ends of the corresponding left filter element 4 and right filter element 5. The main body and the pressure cover each provide a portion of the end plate, which can form a complete and precise end face after assembly. The upper and lower end faces are provided by the flip cover 6 and the end plates of this embodiment to jointly provide stable axial positioning and sealing for the filter element.

[0040] The present invention has the following working principle: Transportation and storage status: The left frame 1 and the right frame 2 are folded together by the first hinge 14 on one side of their hinge structure, so that the entire filter is flat during transportation, which greatly reduces the space occupied. At the same time, the left filter element 4 and the right filter element 5, which are consumables, can be packaged separately and stacked in a flat manner, which also saves transportation and storage costs.

[0041] Assembly status: The user first unfolds the folded left frame 1 and right frame 2 into a semi-cylindrical whole with openings facing each other. Then, the user opens the flip cover 6 at the top of the left frame 1 and right frame 2, as well as the left pressure cover 12 and right pressure cover 22 on the side.

[0042] The pre-packaged left filter element 4 with the sealing gasket 93 fixed at both ends of the limiting cover 9 is inserted from the side into the mounting part formed by the left main body 11 and the left pressure cover 12, ensuring that the sealing ring 8 on the first end plate at the lower end of the filter element is in good contact, and that the limiting hole 91 on the limiting cover 9 is aligned and connected with the locking rib 92 on the left main body 11 or the right main body 21.

[0043] Close the left pressure cap 12, so that it is locked to the left main body 11 through the second connecting part 13, the third buckle 131 and the fourth buckle. At this time, the flange on the left pressure cap 12 will press the sealing gasket 93 of the upper limit cap 9 of the left filter element body 4 to form an end face seal.

[0044] Following the same steps, insert the right filter element 5 into the right frame 2 and close the right pressure cap 22.

[0045] Next, close the flip covers 6 at the upper ends of the left and right frames, and fix them to the end faces of the main body and the pressure cap through the first fastener 72 and the second fastener 73 of the first connector 7. The sealing ring 8 on the inner side of the flip cover 6 will further press and seal the upper end of the filter element, forming a second seal.

[0046] Finally, the left and right frames are fixed into a complete cylindrical mesh frame by the locking parts 3 on the left frame 1, such as the first buckle 31, and the second buckle 32 on the right frame 2.

[0047] Operating status: After the filter is assembled and installed in the air purification equipment, the air to be filtered enters the interior of the cylindrical filter element under the action of the fan. Under pressure, the airflow passes through the filter element body, and pollutants such as particulate matter and formaldehyde are trapped by the filter element material, while clean air is discharged from the outside of the filter element. During this process, the baffles of the left and right covers, the sealing gaskets 93 of the left and right filter elements, the sealing rings 8 of the flip cover 6 and the sealing rings 8 on the first end plate work together with the corresponding end faces of the filter element to ensure that all airflow must pass through the filter element body and will not leak from the end or side gaps, thus ensuring filtration efficiency.

[0048] Filter replacement: When the filter cartridge reaches the end of its lifespan, the user does not need to disassemble the entire filter. Simply open the flip cover 6, left pressure cover 12, and right pressure cover 22 in sequence to easily pour out or remove the dirty left and right filter cartridges. The entire process does not involve hand contact with the filter cartridges. Afterwards, the user can clean the plastic mesh frame, including the main body, pressure covers, and flip cover. After cleaning, insert a new filter cartridge, close all components again, and the filter will be restored to its original condition.

[0049] Several points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection" and "linkage" should be interpreted broadly, and can be mechanical or electrical connection, or internal connection between two components, or direct connection. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationship. When the absolute position of the described object changes, the relative positional relationship may change.

[0050] Secondly: The accompanying drawings of the embodiments disclosed in this invention only involve the structures involved in the embodiments disclosed in this invention. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this invention can be combined with each other.

[0051] Finally, the above description is only a preferred embodiment of the present invention, and the scope of protection of the present invention is not limited to the above embodiments. All technical solutions that fall within the scope of the present invention are within the scope of protection of the present invention.

[0052] It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of this invention should also be considered within the scope of protection of this invention.

Claims

1. A pleated filter element, comprising a mesh frame and a filter element body disposed within the mesh frame, characterized in that: The mesh frame includes a left frame and a right frame. One side of the left frame and the right frame are hinged together by a first hinge. The other side of the left frame and the right frame are provided with locking members to lock them together. The filter element body includes a left filter element and a right filter element. Both the left frame and the right frame are provided with mounting parts. The left filter element is detachably installed in the mounting part of the left frame, and the right filter element is detachably installed in the mounting part of the right frame. Each end of the left frame and the right frame corresponding to the mounting part is provided with a flip cover. A first connecting member is provided between the flip cover and the left frame or the right frame to fix the flip cover to the left frame or the right frame to prevent the left filter element and the right filter element from coming out of the corresponding mounting part.

2. The pleated filter element according to claim 1, characterized in that: The left frame includes a left main body and a left pressure cover, and the right frame includes a right main body and a right pressure cover. The left main body and the right main body are hinged to each other on their adjacent sides. The left pressure cover is hinged to the side of the left main body away from the right main body, and the right pressure cover is hinged to the side of the right main body away from the left main body. A second connecting part is provided between the side of the left pressure cover away from its hinge and the left main body to fix the left main body and the left pressure cover. A third connecting part is provided between the side of the right pressure cover away from its hinge and the right main body to fix the right main body and the right pressure cover. The mounting part is formed between the left main body and the left pressure cover, and the mounting part is formed between the right main body and the right pressure cover.

3. A pleated filter element according to claim 2, characterized in that: The left main body and the left pressure cover are provided with the flip cover at the opening end of the mounting part, and the right main body and the right pressure cover are provided with the flip cover at the opening end of their mounting parts.

4. A pleated filter element according to claim 3, characterized in that: The left main body, the right main body, and the corresponding flip cover are hinged together. The first connecting member includes a first hinge. The outer end face of the left main body is connected to the hinge of the flip cover, and the outer end face of the right main body is connected to the hinge of the corresponding flip cover. The first connecting member also includes a first buckle and a second buckle. The first buckle is provided on the flip cover, and the left main body and the right main body are both provided with a second buckle. And / or, the left pressure cover and the right pressure cover are also provided with a second buckle. The first buckle and the second buckle cooperate to fix the flip cover to the end face of the corresponding left main body, the left pressure cover, the right main body, and the right pressure cover.

5. A pleated filter element according to claim 4, characterized in that: The end face of the flip cover facing the mounting part is provided with a sealing ring, and the flip cover is semi-circular; the first buckle body is symmetrically arranged on both sides of the two ends of the flip cover in the radial direction, and the corresponding second buckle body is arranged on the left pressure cover, right pressure cover, left main body and right main body at the corresponding positions; the first hinge is arranged on the outside of the flip cover and is located at the center line of symmetry.

6. A pleated filter element according to claim 2, characterized in that: The second connecting portion includes a third fastener located at one end of the left pressure cover in the circumferential direction, and a fourth fastener located at one end of the left main body in the circumferential direction that is hinged to the right main body. The third fastener and the fourth fastener are fastened together to fix the left pressure cover to the left main body. The third connecting portion includes a fifth fastener located at one end of the right pressure cover in the circumferential direction, and a sixth fastener located on the right main body in the circumferential direction opposite to the fifth fastener. The fifth fastener and the sixth fastener are fastened together to fix the right pressure cover to the right main body. After the left pressure cover is fixed, it is located in the inner circle of the left main body. The outer sides of both ends of the left pressure cover in the circumferential direction are provided with an integral retaining edge along the diameter direction. The third fastener is provided on one side of the retaining edge of the left pressure cover, and the retaining edge on the other side is provided with a second hinge connecting to the left main body. The left main body and the left pressure cover form a semi-circular mounting part. After the right pressure cover is fixed, it is located in the inner circle of the right main body. The right main body and the right pressure cover form a semi-circular mounting part. The outer sides of both ends of the right pressure cover in the circumferential direction are provided with an integral retaining edge along the diameter direction. The fifth fastener is provided on one side of the retaining edge of the right pressure cover, and the retaining edge on the other side is provided with a second hinge connecting to the right main body. The right main body and the right pressure cover form a semi-circular mounting part.

7. A pleated filter element according to claim 1, characterized in that: The locking component includes a first fastener on the outer surface of one end of the left frame and a second fastener on the corresponding position of the right frame. The first fastener and the second fastener engage with each other to fix the movable ends of the left and right frames.

8. A pleated filter element according to claim 2, characterized in that: Both ends of the left and right filter elements are fixed with limit caps. The limit caps have limit holes on their outer sides when installed. The left and right main bodies have locking ribs on their inner circumferential surfaces at both ends in the circumferential direction. The limit caps have locking ribs on their outer sides when installed. The left and right main bodies have limit holes on their inner circumferential surfaces at both ends in the circumferential direction. The locking ribs can pass through the corresponding limit holes to circumferentially limit the left and right filter elements.

9. A pleated filter element according to claim 8, characterized in that: The limiting cover on the left filter element body has a sealing gasket at one end opposite to the left filter element body. After being assembled into the mounting part inside the left frame body, the sealing gasket abuts against the corresponding edge of the left pressure cover. The limiting cover on the right filter element body also has a sealing gasket at one end opposite to the right filter element body. After being assembled into the mounting part inside the right frame body, the sealing gasket abuts against the corresponding edge of the right pressure cover.

10. A pleated filter element according to claim 1, characterized in that: A first end plate is integrally connected to the lower end of the left main body of the left frame, and a first end plate is integrally connected to the lower end of the right main body of the right frame. A second end plate is integrally connected to the lower end of the left pressure cover of the left frame, and a second end plate is integrally connected to the lower end of the right pressure cover of the right frame. After the left frame and the right frame are assembled together, the two first end plates form a circle, and the two second end plates form a circle. The two second end plates are located on the upper side of the first end plates. Each of the first end plates is provided with a semi-circular sealing ring. The sealing ring is located at the lower end of the corresponding mounting part and abuts against the lower ends of the corresponding left filter element and right filter element.

Images