A detachable and washable multi-layer composite filter element

Abstract

The utility model relates to filter core technical field especially, more particularly to a detachable and washable multilayer composite filter core, which comprises: a first mounting disc and a second mounting disc; at least two groups of fixed screw rods rotatably connected to the second mounting disc, each fixed screw rod being in threaded cooperation with the first mounting disc; at least three fixed frames of the plug-in type arranged between the first mounting disc and the second mounting disc; a folding filter paper fixedly connected to the fixed frame; an activated carbon layer wrapped in the annular structure formed by the fixed frame; a PP cotton layer fixedly connected to the activated carbon layer; and a through opening arranged on the second mounting disc for butt joint, the through opening being in butt joint with the center of the PP cotton layer. The utility model is provided with a dismounting structure, which facilitates the dismounting and cleaning operation of the outermost folding filter paper layer, restores the filtering capacity of the folding filter paper to a certain extent, reduces the frequency of filter material replacement, prolongs the overall service life of the utility model, reduces the use cost, and improves the economy.

Description

Technical Field

[0001] This utility model relates to the field of filter technology, and in particular to a detachable and washable multi-layer composite filter. Background Technology

[0002] The filter element is the core of the filtration system, which can remove pollutants such as suspended particles, colloids, and microorganisms from liquids. Its working principle is based on physical interception, adsorption, and deep filtration mechanisms: when the fluid flows through the filter element, the pollutants are intercepted or adsorbed by the pores of the filter material, thus achieving solid-liquid separation.

[0003] Modern filter cartridges typically employ a multi-layered composite structure to filter contaminants of varying particle sizes in stages: the outermost layer is a coarse filter layer, often using pleated filter paper with a strong dirt-holding capacity, intercepting large particles such as silt and rust; the middle layer is an activated carbon adsorption layer, utilizing its porous structure to adsorb residual chlorine and other organic matter; the innermost layer is a PP cotton fine filter layer, using its fine micropores to trap colloids and bacteria, ensuring clean effluent. This gradient filtration design effectively reduces the load on individual filter media, extends the overall lifespan of the filter cartridge, and improves filtration accuracy.

[0004] However, as the filtration process continues, contaminants accumulate on or inside the filter media, increasing filtration resistance and decreasing flow rate, thus affecting the filter's quality. In this case, filter replacement is necessary. In actual use, the outermost pleated filter paper handles most of the interception of large particles. Although it is most prone to clogging, its structural characteristics allow it to recover some filtration performance through physical cleaning after accumulating a certain amount of contaminants, eliminating the need for direct disposal. Therefore, the current practice of directly replacing most filter cartridges wastes filtration material, leading to higher maintenance costs and resource consumption. Utility Model Content

[0005] This invention provides a washable multi-layer composite filter element with an outermost folded filter paper that can be easily disassembled and cleaned, aiming to extend the overall service life of the filter element, reduce unnecessary material waste, and lower the user's operating costs.

[0006] The technical solution is as follows: a detachable and washable multi-layer composite filter element, comprising: a first mounting plate and a second mounting plate; at least two sets of fixing screws rotatably connected to the second mounting plate, each fixing screw threadedly engaging with the first mounting plate; at least three insertable fixing frames fixed between the first and second mounting plates, forming a ring structure; pleated filter paper fixedly connected within the fixing frames, all fixing frames and pleated filter paper together forming a pleated filter paper layer; an activated carbon layer wrapped within the ring structure formed by the fixing frames, the activated carbon layer being located on the inner side of the pleated filter paper and tightly engaging with it; and a PP cotton layer fixedly connected within the activated carbon layer. The second mounting plate is provided with a connecting port, the connecting port being aligned with the center of the PP cotton layer.

[0007] As an improvement to the above solution, the filter element further includes: a top ring slidably connected to the first mounting plate and the second mounting plate, with the top rings on both sides contacting the upper and lower surfaces of the fixing frame respectively; an operating ring slidably connected to the outer side of the first mounting plate and the second mounting plate; and a connecting block fixedly connected between the operating ring and the top ring at the corresponding position.

[0008] As an improvement to the above solution, the filter element further includes: a sealing ring fixedly connected to the contact surfaces of the first mounting plate and the second mounting plate with the fixing frame, for sealing the gap between the folded filter paper layer and the first mounting plate and the second mounting plate.

[0009] As an improvement to the above solution, the filter element further includes: a limiting post fixedly connected to the first mounting plate and the second mounting plate, which is inserted into the fixing frame.

[0010] As an improvement to the above solution, the filter element further includes an auxiliary ring fixedly connected to the first mounting plate and the second mounting plate, used to assist in the control operation ring.

[0011] As an improvement to the above solution, the filter element further includes a pad that is fixedly connected to the contact surface between the second mounting plate and the fixing screw, and the pad can undergo elastic deformation.

[0012] The beneficial effects of this utility model are as follows: This utility model features a disassembly structure, facilitating the removal and cleaning of the outermost folded filter paper layer. This restores the filtration capacity of the folded filter paper to a certain extent, thereby reducing the frequency of filter media replacement, extending the overall service life of the utility model, lowering operating costs, and improving economic efficiency. This utility model uses a top ring to control the synchronous displacement of all fixing frames, allowing the fixing frames to detach from the first mounting plate and its components simultaneously, avoiding individual disassembly and achieving rapid overall disassembly. This utility model uses sealing rings to seal the gaps between the folded filter paper layer and the first and second mounting plates, preventing leakage of unfiltered wastewater and ensuring that the filtration effect is not affected. This utility model uses limiting posts with an insert-type fit with the fixing frames, further improving the installation stability of the fixing frames. This utility model uses auxiliary rings and operating rings to create a leveraged operation, making the removal of the fixing frames easier and improving operational convenience. This utility model uses pads to enhance the stability of the overall structure and prevent loosening after long-term use. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0014] Figure 2 This is a partial view of the overall structure of this utility model.

[0015] Figure 3 This is a schematic diagram of the connection structure between the limiting post and the sealing ring of this utility model.

[0016] Figure 4 This is a schematic diagram of the connection structure of the top ring, connecting block and operating ring of this utility model.

[0017] The labels in the diagram are as follows: 1. First mounting plate, 2. Second mounting plate, 3. Activated carbon layer, 4. PP cotton layer, 5. Fixing frame, 6. Folded filter paper, 7. Fixing screw, 8. Top ring, 9. Connecting block, 10. Operating ring, 11. Sealing ring, 12. Limiting post, 13. Auxiliary ring, 14. Pad. Detailed Implementation

[0018] The above solution will be further described below with reference to specific embodiments. It should be understood that these embodiments are for illustrating the present invention and are not intended to limit the scope of the present invention. The implementation conditions used in the embodiments can be further adjusted according to the conditions of specific manufacturers, and the implementation conditions not specified are usually the conditions in conventional experiments.

[0019] Example: A removable and washable multi-layer composite filter element, see reference. Figures 1-2 The system includes: a first mounting plate 1 and a second mounting plate 2, which serve as the frame foundation of the filter element; four sets of fixing screws 7 rotatably mounted on the second mounting plate 2, all of which are threaded into the first mounting plate 1 to form a main frame fixing structure and facilitate easy disassembly; six insertable fixing brackets 5 fixed between the first mounting plate 1 and the second mounting plate 2, forming a ring structure; pleated filter paper 6 fixedly installed within the fixing brackets 5, with all fixing brackets 5 and pleated filter paper 6 forming a pleated filter paper layer; an activated carbon layer 3 wrapped within the ring structure formed by the fixing brackets 5, located on the inner side of the pleated filter paper 6 and tightly fitted therewith; and a PP cotton layer 4 fixedly installed within the activated carbon layer 3. The second mounting plate 2 is provided with a connecting port, which connects with the center of the PP cotton layer 4. After the filtered liquid passes through the center of the PP cotton layer 4, it will be discharged collectively through this port.

[0020] When this filter cartridge is installed in a filtration system, wastewater flows sequentially through a pleated filter paper layer, an activated carbon layer 3, and a PP cotton layer 4. Primary filtration occurs in the pleated filter paper layer to remove large particles. The activated carbon layer 3 removes organic matter, odors, and some chemical pollutants. The PP cotton layer 4 performs fine filtration to remove tiny particles. Finally, the clean liquid flows out from the center of the PP cotton layer 4 and is discharged through the opening of the second mounting plate 2, ensuring the purity of the filtered water. After a certain period of use, the fixing screw 7 can be rotated to easily remove the fixing bracket 5 from the first mounting plate 1 and the second mounting plate 2, facilitating the disassembly and cleaning of the outermost pleated filter paper 6. This restores the filtration capacity of the pleated filter paper 6 to some extent, reducing the frequency of filter media replacement, extending the overall service life of the filter cartridge, lowering operating costs, and improving the economic efficiency of this filter cartridge.

[0021] See Figure 1 , Figure 3 and 4 It also includes: a top ring 8 slidably mounted on the first mounting plate 1 and the second mounting plate 2, with the top rings 8 on both sides contacting the upper and lower surfaces of the fixing frame 5 respectively; an operating ring 10 slidably mounted on the outer side of the first mounting plate 1 and the second mounting plate 2; and a connecting block 9 fixedly mounted between the operating ring 10 and the top ring 8 at the corresponding position. When the top ring 8 is moved axially along the first mounting plate 1 by using the operating ring 10, all fixing frames 5 will be pushed outward synchronously, allowing the fixing frames 5 to be uniformly disassembled from the first mounting plate 1 and the second mounting plate 2, avoiding individual disassembly and achieving rapid disassembly of the entire filter element.

[0022] See Figures 1-3 It also includes: a sealing ring 11 fixedly installed on the contact surface of the first mounting plate 1 and the second mounting plate 2 with the fixing frame 5, used to seal the gap between the folded filter paper layer and the first mounting plate 1 and the second mounting plate 2, to prevent unfiltered sewage leakage and ensure that the filtration effect is not affected; a limiting post 12 fixedly installed in the first mounting plate 1 and the second mounting plate 2, which is inserted into the fixing frame 5 to further improve the installation stability of the fixing frame 5 with the first mounting plate 1 and the second mounting plate 2; an auxiliary ring 13 fixedly installed on the first mounting plate 1 and the second mounting plate 2, which allows the user to press the auxiliary ring 13 and the operating ring 10 at the same time when it is necessary to disassemble the folded filter paper layer, forming a leverage operation, making it easier to push out the fixing frame 5 and improving the convenience of operation; and a pad 14 fixedly installed on the contact surface of the second mounting plate 2 and the fixing screw 7, which utilizes the elastic deformation characteristics of the pad 14 to make the fixing screw 7 press the first mounting plate 1 and the second mounting plate 2 more evenly when locking, enhancing the stability of the overall structure of this filter element and preventing loosening after long-term use.

[0023] Although the present invention has been described in detail with reference to the above embodiments, it will be apparent to those skilled in the art that various changes or modifications can be made to the present invention without departing from the principles and spirit of the present invention as defined by the claims. Therefore, the detailed description of the embodiments disclosed herein is for explanation only and not for limiting the present invention, but rather the scope of protection is defined by the content of the claims.

Claims

1. A removable and washable multi-layer composite filter element, characterized in that, include: A first mounting plate (1) and a second mounting plate (2); at least two sets of fixing screws (7) rotatably connected to the second mounting plate (2), each fixing screw (7) being threaded into the first mounting plate (1); at least three insert-type fixing brackets (5) fixed between the first mounting plate (1) and the second mounting plate (2), forming a ring structure; folded filter paper (6) fixedly connected within the fixing brackets (5), all fixing brackets (5) and folded filter paper (6) together forming a folded filter paper layer; an activated carbon layer (3) wrapped within the ring structure formed by the fixing brackets (5), the activated carbon layer (3) being located on the inner side of the folded filter paper (6) and tightly fitted therewith; a PP cotton layer (4) fixedly connected within the activated carbon layer (3), the second mounting plate (2) being provided with a through-hole for docking, the through-hole being docked with the center of the PP cotton layer (4).

2. The washable multi-layer composite filter element as described in claim 1, characterized in that, The filter element further includes: a top ring (8) slidably connected to the first mounting plate (1) and the second mounting plate (2), with the top rings (8) on both sides contacting the upper and lower surfaces of the fixing frame (5) respectively; an operating ring (10) slidably connected to the outside of the first mounting plate (1) and the second mounting plate (2); and a connecting block (9) fixedly connected between the operating ring (10) and the top ring (8) at the corresponding position.

3. The washable multi-layer composite filter element as described in claim 2, characterized in that, The filter element further includes a sealing ring (11) fixedly connected to the contact surface of the first mounting plate (1) and the second mounting plate (2) and the fixing frame (5), for sealing the gap between the folded filter paper layer and the first mounting plate (1) and the second mounting plate (2).

4. A washable multi-layer composite filter element as described in claim 3, characterized in that, The filter element also includes a limiting post (12) fixedly connected to the first mounting plate (1) and the second mounting plate (2), which is inserted into the fixing frame (5).

5. A washable multi-layer composite filter element as described in claim 4, characterized in that, The filter element further includes an auxiliary ring (13) fixedly connected to the first mounting plate (1) and the second mounting plate (2) for assisting in the control operation ring (10).

6. A washable multi-layer composite filter element as described in claim 5, characterized in that, The filter element further includes a pad (14) fixedly connected to the contact surface between the second mounting plate (2) and the fixing screw (7), the pad (14) being capable of elastic deformation.

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