Gradient magnetic attraction filtering device

The multi-layer filtration structure of the gradient magnetic filtration device solves the problems of waste from traditional filter replacement and low removal rate of small-diameter microplastics, enabling selective replacement of filter elements and high-efficiency filtration.

CN224313378UActive Publication Date: 2026-06-02SHANXI AGRI UNIV

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHANXI AGRI UNIV
Filing Date
2025-06-19
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

Traditional biomass activated carbon filtration devices are wasteful when replacing filter cartridges and have insufficient adsorption capacity for small-diameter microplastics, resulting in low removal rates.

Method used

A gradient magnetic filtration device is adopted, which utilizes a combination structure of quartz sand plate, biomass activated carbon plate, magnetic biomass activated carbon plate and fluffy cotton plate to achieve multi-layer filtration through physical interception, chemical adsorption and magnetic separation. The quartz sand plate and biomass activated carbon plate respectively perform chemical adsorption, and the magnetic biomass activated carbon plate performs magnetic separation of small-particle microplastics.

Benefits of technology

It enables selective replacement of filter cartridges, reduces waste, and improves the removal rate of small-diameter microplastics, thereby enhancing the overall filtration effect.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model belongs to filter device technical field, concretely relates to a gradient magnetic attraction filter device, including the casing, the casing is opened out the hollow slot, the first plane is opened in hollow slot inner wall, four round stoppers are set up on the first plane and along the casing height direction, and the first pull -out tray, second pull -out tray, third pull -out tray and fourth pull -out tray are successively slidably installed to the stopper, the first pull -out tray, second pull -out tray, third pull -out tray and fourth pull -out tray set up the second plane to the first plane, the second plane is opened the rectangular slot, the round groove is set up to the rectangular slot end, the rectangular slot width is less than the diameter of round stopper, quartz sand plate is set up in the first pull -out tray, biomass activated carbon plate is set up in the second pull -out tray, magnetic biomass activated carbon plate is set up in the third pull -out tray, and fluffy cotton board is set up in the fourth pull -out tray.
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Description

Technical Field

[0001] This utility model belongs to the technical field of purification devices, and in particular relates to a gradient magnetic filtration device. Background Technology

[0002] The statements in this section are merely background information relating to this disclosure and do not necessarily constitute prior art.

[0003] In existing water treatment technologies, the efficient removal of microplastics still faces significant challenges. Traditional biomass activated carbon filtration devices combine physical adsorption and biodegradation water treatment technologies. Their core principle is to utilize the high specific surface area and well-developed pore structure of activated carbon to adsorb organic matter and impurities in the water, while forming a biofilm on its surface, which further degrades these organic matter through the action of microorganisms.

[0004] The inventors discovered the following technical problems with traditional biomass activated carbon filtration devices:

[0005] (1) The filter element is usually only partially ineffective, but when it is replaced, the entire filter element needs to be replaced. After the entire filter element is replaced, the unineffective filter layer is wasted and cannot be selectively recycled and regenerated.

[0006] (1) Although it can effectively intercept large-diameter microplastics, it has insufficient adsorption capacity for small-diameter microplastics (especially nano-sized or fibrous particles), resulting in an overall removal rate of only about 58.3%. This deficiency stems from the fact that existing technologies rely on a single physical interception or chemical adsorption mechanism and lack targeted capture methods for small-diameter pollutants, making it easy for microplastics to penetrate the filter layer and re-enter the water body. Utility Model Content

[0007] In order to solve the above problems, this utility model proposes a gradient magnetic attraction filtering device. The technical problem to be solved by this utility model is...

[0008] According to some embodiments, the present invention adopts the following technical solution:

[0009] This application discloses a gradient magnetic filtration device, including a housing. The housing has a hollowed-out groove, and the inner wall of the hollowed-out groove has a first plane. Four circular blocks are arranged on the first plane along the height direction of the housing. A first pull-out plate, a second pull-out plate, a third pull-out plate, and a fourth pull-out plate are slidably installed on the corresponding blocks from top to bottom. The first pull-out plate, the second pull-out plate, the third pull-out plate, and the fourth pull-out plate have a second plane corresponding to the first plane. The second plane has a rectangular groove, and a circular groove is provided at the end of the rectangular groove. The width of the rectangular groove is smaller than the diameter of the circular block.

[0010] The first pull-out tray contains a quartz sand plate, the second pull-out tray contains a biomass activated carbon plate, the third pull-out tray contains a magnetic biomass activated carbon plate, and the fourth pull-out tray contains a fluffy cotton plate.

[0011] Further configured, the first, second, third, and fourth pull-out trays have grooves in their centers, and the first, second, third, and fourth pull-out trays respectively place a quartz sand plate, a biomass activated carbon plate, a magnetic biomass activated carbon plate, and a fluffy cotton plate through the grooves.

[0012] Further configuration involves the first, second, third, and fourth pull-out trays being coaxially aligned.

[0013] A sealing ring is further configured to be installed on the outside of the groove and on the upper side of the first pull-out plate, the second pull-out plate, the third pull-out plate, and the fourth pull-out plate.

[0014] Further configuration includes an inlet pipe at the top of the housing with threads on the outside, and an outlet pipe at the bottom of the housing with threads on the outside.

[0015] Further configured, a gap is provided between the top of the first pull-out tray and the inner wall of the top of the housing, and a gap is provided between the bottom of the first pull-out tray and the inner wall of the bottom of the housing.

[0016] Further configuration: the first, second, third, and fourth pull-out trays are made of rubber.

[0017] Further configuration involves providing support blocks at the bottom of the first, second, third, and fourth pull-out trays.

[0018] Further, the corresponding blocks of the quartz sand board, biomass activated carbon board, magnetic biomass activated carbon board, and fluffy cotton board are equipped with slots.

[0019] Further configured, a plurality of support blocks are arranged along the circumference of the first pull-out plate, and a plurality of slots are arranged along the circumference of the quartz sand plate.

[0020] The beneficial effects of this utility model are as follows:

[0021] (1) A pull-out structure is set up. Since the diameter of the circular block is larger than the width of the rectangular groove, and the first, second, third and fourth pull-out plates are all made of rubber, the rectangular groove will deform during the insertion process. When some of the layers fail, a single pull-out plate can be pushed out to replace it, reducing waste.

[0022] (2) By placing quartz sand plate, biomass activated carbon plate, magnetic biomass activated carbon plate and fluffy cotton plate in sequence, the fluffy cotton plate achieves physical interception, the quartz sand plate and biomass activated carbon plate achieve chemical adsorption, and the magnetic biomass activated carbon plate achieves magnetic separation of small-diameter microplastics, thus solving the penetration problem caused by insufficient adsorption force of small-diameter microplastics, and filtering large and small plastic particles in sequence. Attached Figure Description

[0023] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0024] Figure 1 This is a schematic diagram of the structure of this utility model;

[0025] Figure 2 for Figure 1 A sectional view;

[0026] Figure 3 This is a schematic diagram of the structure of the shell of this utility model;

[0027] Figure 4 This is a schematic diagram of the structure of the first pull-out tray, the second pull-out tray, the third pull-out tray, and the fourth pull-out tray of this utility model.

[0028] Figure label:

[0029] 1. Shell; 2. Hollowed-out groove; 3. First plane; 4. Circular stop block; 5. First pull-out plate; 6. Second pull-out plate; 7. Third pull-out plate; 8. Fourth pull-out plate; 9. Second plane; 10. Rectangular groove; 11. Circular groove; 12. Quartz sand plate; 13. Biomass activated carbon plate; 14. Magnetic biomass activated carbon plate; 15. Fluffy cotton board; 16. Sealing ring; 17. Inlet pipe; 18. Outlet pipe; 19. Thread; 20. Support block; 21. Slot. Detailed implementation method:

[0030] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0031] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0032] Example 1

[0033] A gradient magnetic attraction filter device, as described above Figure 1 and Figure 2 It includes a housing 1, with a hollowed-out groove 2, as shown in the reference. Figure 3 A first plane 3 is formed on the inner wall of the hollow groove 2. Four circular blocks 4 are arranged on the first plane 3 along the height direction of the shell 1. The first pull-out plate 5, the second pull-out plate 6, the third pull-out plate 7, and the fourth pull-out plate 8 are slidably installed on the corresponding blocks 4 from top to bottom. (Refer to...) Figure 4 The first pull-out plate 5, the second pull-out plate 6, the third pull-out plate 7 and the fourth pull-out plate 8 are respectively set with the second plane 9 corresponding to the first plane 3. The second plane 9 has a rectangular groove 10, and a circular groove 11 is set at the end of the rectangular groove 10. The width of the rectangular groove 10 is smaller than the diameter of the circular stop 4.

[0034] Reference Figure 1 and Figure 2 The first pull-out tray 5 contains a quartz sand plate 12, the second pull-out tray 6 contains a biomass activated carbon plate 13, the third pull-out tray 7 contains a magnetic biomass activated carbon plate 14, the magnetic biomass activated carbon plate 14 uses existing magnetic carbon particles, and the fourth pull-out tray 8 contains a fluffy cotton plate 15.

[0035] The first pull-out plate 5, the second pull-out plate 6, the third pull-out plate 7, and the fourth pull-out plate 8 have grooves in their centers. Quartz sand plate 12, biomass activated carbon plate 13, magnetic biomass activated carbon plate 14, and fluffy cotton plate 15 are placed in the grooves respectively. The fluffy cotton plate 15 achieves physical interception, the quartz sand plate 12 and the biomass activated carbon plate 13 achieve chemical adsorption, and the magnetic biomass activated carbon plate 14 achieves magnetic separation of small-diameter microplastics, solving the penetration problem of small-diameter microplastics due to insufficient adsorption force.

[0036] The first pull plate 5, the second pull plate 6, the third pull plate 7, and the fourth pull plate 8 are arranged coaxially to ensure the smooth flow of liquid from top to bottom.

[0037] A sealing ring 16 is installed on the outer side of the groove and on the upper side of the first pull-out plate 5, the second pull-out plate 6, the third pull-out plate 7, and the fourth pull-out plate 8. Since the first pull-out plate 5, the second pull-out plate 6, the third pull-out plate 7, and the fourth pull-out plate 8 are spliced ​​together, there are gaps between them. To prevent liquid from flowing out from the sides of the first pull-out plate 5, the second pull-out plate 6, the third pull-out plate 7, and the fourth pull-out plate 8, a sealing strip is installed above each pull-out plate so that the sealing strip can be squeezed after the pull-out plate is installed to achieve a seal.

[0038] A water inlet pipe 17 is provided at the top of the housing 1, and a thread 19 is provided on the outside of the water inlet pipe 17. A water outlet pipe 18 is provided at the bottom of the housing 1, and a thread 19 is provided on the outside of the water outlet pipe 18. The water inlet device can be connected through the thread 19 structure.

[0039] A gap is provided between the top of the first pull-out plate 5 and the top inner wall of the housing 1, and a gap is provided between the bottom of the first pull-out plate 5 and the bottom inner wall of the housing 1. The gaps provided at the top and bottom provide water storage space.

[0040] The first pull-out plate 5, the second pull-out plate 6, the third pull-out plate 7, and the fourth pull-out plate 8 are made of rubber. The use of rubber material causes the rectangular groove 10 to be deformed by the circular stop 204 during the insertion process.

[0041] The bottom of the first pull-out tray 5, the second pull-out tray 6, the third pull-out tray 7, and the fourth pull-out tray 8 are equipped with a stop block 20.

[0042] The quartz sand plate 12, biomass activated carbon plate 13, magnetic biomass activated carbon plate 14, and fluffy cotton plate 15 are provided with slots 21 on the corresponding support blocks 20. Several support blocks 20 are arranged around the first pull-out plate 5, and several slots 21 are arranged around the quartz sand plate 12. In order to limit the four filter layers of quartz sand plate 12, biomass activated carbon plate 13, magnetic biomass activated carbon plate 14, and fluffy cotton plate 15, the support blocks 20 support the four filter layers upward to prevent the filter layers from falling off.

[0043] The installation process is as follows:

[0044] The quartz sand plate 12, biomass activated carbon plate 13, magnetic biomass activated carbon plate 14, and fluffy cotton plate 15 are respectively placed in the slots 21 on the support blocks 20 of the first pull-out plate 5, the second pull-out plate 6, the third pull-out plate 7, and the fourth pull-out plate 8. Then, the rectangular slot 10 of the fourth pull-out plate 8 is aligned with the circular stop 4 and the fourth pull-out plate 8 is inserted into the hollow slot 2 of the shell 1. Since the diameter of the circular stop 4 is larger than the width of the rectangular slot 10, and the first pull-out plate 5, the second pull-out plate 6, the third pull-out plate 7, and the fourth pull-out plate 8 are all made of rubber, the rectangular slot 10 is deformed during the insertion process. Then, the circular stop 4 is stuck in the circular slot 11. Then, the second pull-out plate 6, the third pull-out plate 7, and the fourth pull-out plate 8 are installed in sequence. When disassembly is required, the pull-out plates can be pushed out.

[0045] During filtration, wastewater flows sequentially from the inlet pipe 17 through the quartz sand plate 12, the biomass activated carbon plate 13, the magnetic biomass activated carbon plate 14, and the fluffy cotton plate 15. The fluffy cotton plate 15 achieves physical interception, the quartz sand plate 12 and the biomass activated carbon plate 13 achieve chemical adsorption, and the magnetic biomass activated carbon plate 14 achieves magnetic separation of small-diameter microplastics, solving the penetration problem caused by insufficient adsorption force of small-diameter microplastics.

[0046] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

[0047] Although the specific embodiments of the present utility model have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present utility model. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solution of the present utility model are still within the scope of protection of the present utility model.

Claims

1. A gradient magnetic filtration device, characterized in that, The device includes a housing with a hollowed-out groove. A first plane is formed on the inner wall of the hollowed-out groove. Four circular blocks are arranged on the first plane along the height direction of the housing. A first pull-out plate, a second pull-out plate, a third pull-out plate, and a fourth pull-out plate are slidably installed on the corresponding blocks from top to bottom. A second plane is formed on the first plane corresponding to the first plane. A rectangular groove is formed on the second plane. A circular groove is formed at the end of the rectangular groove. The width of the rectangular groove is smaller than the diameter of the circular block. The first pull-out tray contains a quartz sand plate, the second pull-out tray contains a biomass activated carbon plate, the third pull-out tray contains a magnetic biomass activated carbon plate, and the fourth pull-out tray contains a fluffy cotton plate.

2. The gradient magnetic filtration device as described in claim 1, characterized in that... The first, second, third, and fourth pull-out trays have grooves in their centers. Quartz sand plates, biomass activated carbon plates, magnetic biomass activated carbon plates, and fluffy cotton plates are placed on the first, second, third, and fourth pull-out trays through the grooves, respectively.

3. The gradient magnetic attraction filtering device as described in claim 1, characterized in that, The first, second, third, and fourth pull-out trays are coaxially aligned.

4. The gradient magnetic filtration device as described in claim 1, characterized in that, A sealing ring is installed on the outside of the groove and on the upper side of the first, second, third, and fourth pull-out plates.

5. The gradient magnetic attraction filtering device as described in claim 1, characterized in that, A water inlet pipe is installed at the top of the shell, with threads on the outside of the water inlet pipe, and a water outlet pipe is installed at the bottom of the shell, with threads on the outside of the water outlet pipe.

6. The gradient magnetic attraction filtering device as described in claim 1, characterized in that, A gap is provided between the top of the first pull-out tray and the inner wall of the top of the housing, and a gap is provided between the bottom of the first pull-out tray and the inner wall of the bottom of the housing.

7. The gradient magnetic attraction filtering device as described in claim 1, characterized in that, The first, second, third, and fourth pull-out trays are made of rubber.

8. The gradient magnetic filtration device as described in claim 1, characterized in that, Support blocks are installed at the bottom of the first, second, third, and fourth pull-out trays.

9. A gradient magnetic filtration device as described in claim 8 or claim 1, characterized in that, The quartz sand board, biomass activated carbon board, magnetic biomass activated carbon board and fluffy cotton board are equipped with corresponding support blocks with slots.

10. A gradient magnetic filtration device as described in claim 9, characterized in that, Several support blocks are arranged around the first pull-out plate, and several slots are arranged around the quartz sand plate.