Magnetic ceramic filter

Abstract

This invention belongs to the field of filter technology, specifically a magnetic ceramic filter. S1: A magnetic ceramic filter as described above is provided, wherein a first magnetic ring is embedded at the bottom of the top cover, and a second magnetic ring is embedded at the top of the filter screen; S2: The filter screen is placed at the mouth of a container with its second magnetic ring facing upwards; S3: The top cover, with its bottom facing downwards, is brought close to the filter screen from above. The magnetic attraction generated by the opposite magnetic poles between the first and second magnetic rings automatically aligns and attracts the top cover and filter screen, completing the assembly. Through this magnetic splicing design, the connection between the top cover and the filter screen no longer relies on traditional overlapping or snap-fit ​​methods, but rather on magnetic force to provide a continuous and uniform adsorption force, thereby significantly reducing the possibility of the filter screen shifting or falling off when subjected to external impact or liquid shock.

Description

Technical Field

[0001] This invention belongs to the field of filter technology, specifically a magnetic ceramic filter. Background Technology

[0002] A magnetic ceramic filter, a type of existing detachable and simple filter, typically represented by a tea strainer in teaware, is an auxiliary device that relies on gravity to achieve solid-liquid separation. These filters are usually funnel-shaped or bowl-shaped, with a fine filter mesh (such as stainless steel mesh, nylon mesh, or a porous ceramic structure) embedded in their bottom or side walls. They have supporting feet or hanging loops along the edges for stable mounting at the mouth of a container. Besides teaware, similar structures are widely used in kitchen sink filtration, small-scale pharmaceutical filtration, coffee brewing, and other scenarios requiring rapid interception of solid residues.

[0003] When using the filter, place the tea strainer or other similar filter directly above the receiving container (such as a fairness cup, teacup, sink drain, or beaker), ensuring it is stable and does not tip over. Then, slowly pour the mixture containing solid impurities into the filter. The liquid flows through the filter screen into the container below under gravity, while tea leaves, food scraps, or particulate matter are trapped on the filter screen surface. After filtration, pinch the edge of the filter to remove it, empty the residue from the screen, and rinse thoroughly with water for reuse. The entire operation requires no tools, is quick and easy to install and remove, and is suitable for scenarios where filter replacement is frequent.

[0004] Existing simple filters (such as tea strainers and sink filters) are usually fixed to the container opening by simply stacking or snapping on, relying on gravity to maintain their position. This structure is prone to shifting or falling off when subjected to external impacts or liquid shocks, causing filtration to be interrupted or residue to fall into the container below. In addition, when it is necessary to replace the filter, the user must carefully remove the old part and place the new part, which is inconvenient in environments with limited space or unstable containers.

[0005] Therefore, the present invention provides a magnetic ceramic filter. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0007] The technical solution adopted by the present invention to solve its technical problem is as follows: A magnetic ceramic filter of the present invention includes a top cover and a filter screen; a first groove is opened at the bottom of the top cover; a first magnetic ring is embedded in the first groove; a second groove is opened at the top of the filter screen; a second magnetic ring is embedded in the second groove; the first magnetic ring and the second groove are magnetically attracted to each other; wherein the magnetic poles of the surfaces of the first magnetic ring and the second groove that are close to each other are different magnetic poles, so as to achieve attraction when the first magnetic ring and the second groove are close to each other; the bottom of the top cover and the top of the filter screen are spliced ​​and aligned, wherein the outer surface of the top cover after the filter screen is aligned is a smooth surface.

[0008] Furthermore, the bottom inner wall of the first groove of the top cover has multiple first insertion holes; the first magnetic ring has multiple second insertion holes vertically penetrating through its center; each second insertion hole is perpendicularly corresponding to the first insertion hole and has the same diameter; a first pin is interference-fitted into the second insertion hole and the first insertion hole; when the first pin is inserted into the second insertion hole and the first insertion hole, its volume can be reduced by cooling before insertion; the bottom inner wall of the second groove of the filter screen has multiple fourth insertion holes; the second magnetic ring has a third insertion hole vertically penetrating through its center; each third insertion hole is perpendicularly corresponding to the fourth insertion hole and has the same diameter; a second pin is interference-fitted into the fourth insertion hole and the third insertion hole; when the second pin is inserted into the third insertion hole and the fourth insertion hole, its volume can be reduced by cooling before insertion.

[0009] Furthermore, the first socket has a first positioning groove; the second socket has a second positioning groove; two first flexible pads are fixed in the middle of the first pin, the upper first flexible pad in the middle of the first pin is locked in the first positioning groove when the first pin is inserted into the first socket, and the lower first flexible pad in the middle of the first pin is locked in the second positioning groove when the first pin is inserted into the second socket; the fourth socket has a third positioning groove; the third socket has a third positioning groove; two second flexible pads are fixed in the middle of the second pin, the upper second flexible pad in the middle of the second pin is locked in the third positioning groove when the second pin is inserted into the third socket, and the lower second flexible pad in the middle of the second pin is locked in the third positioning groove when the second pin is inserted into the fourth socket; wherein the first flexible pads and the second flexible pads can be inserted by elastic deformation during insertion.

[0010] Furthermore, the first and second magnetic rings are made of high-temperature resistant magnetic materials, such as samarium cobalt magnets and high-temperature resistant neodymium iron boron magnets.

[0011] Furthermore, the first magnetic ring is fixed to the top cover by adhesive; the second magnetic ring is fixed to the filter screen by adhesive; the adhesive can be a high-temperature resistant food-grade adhesive, wherein there is a gap of about 0.1-0.2 mm between the top cover and the first magnetic ring, and a gap of about 0.1-0.2 mm between the second magnetic ring and the second groove.

[0012] Furthermore, the outer surface of both the first and second magnetic rings is completely cast or sintered with a layer of ceramic.

[0013] A method for quick assembly and replacement of a magnetic ceramic filter includes the following steps: S1: Provide a magnetic ceramic filter as described above, wherein a first magnetic ring is embedded at the bottom of the top cover and a second magnetic ring is embedded at the top of the filter screen; S2: Place the filter screen at the mouth of the container with its second magnetic ring facing upwards; S3: With the top cover facing down, approach the filter screen from above. Utilize the magnetic attraction generated by the opposite magnetic poles between the first and second magnetic rings to automatically align and attract the top cover to the filter screen, thus completing the assembly. S4: When the filter needs to be replaced, manually apply a separating force to overcome the magnetic attraction and remove the top cover from the filter. S5: After replacing the filter, repeat steps S2 to S3 to complete the quick assembly of the new filter.

[0014] Furthermore, in step S3, since the bottom of the top cover and the top of the filter screen are designed to be spliced ​​and aligned with each other and have smooth outer surfaces, after they are sucked together, they form a continuous and smooth transition with the container opening.

[0015] Furthermore, when the first and second magnetic rings are made of high-temperature resistant magnetic materials, the method is suitable for high-temperature liquid filtration scenarios, and its magnetic attraction remains stable after contact with high-temperature liquids.

[0016] The beneficial effects of this invention are as follows: 1. The magnetic ceramic filter of the present invention, through a magnetic splicing design, eliminates the need for traditional overlapping or snap-fit ​​methods in connecting the top cover and the filter screen. Instead, it relies on magnetic force to provide a continuous and uniform adsorption force, thereby significantly reducing the possibility of the filter screen shifting or falling off when subjected to external force or liquid impact, and improving the positioning stability of the filter at the container opening. At the same time, when the filter screen needs to be replaced, the user only needs to overcome the magnetic force to separate the top cover from the filter screen to easily remove the old filter screen, without the need for complicated snap-fit ​​unlocking operations, thus improving the convenience of replacing the filter screen in confined or unstable environments.

[0017] 2. The magnetic ceramic filter of the present invention uses a cold-shrink interference fit to secure the first and second magnetic rings in their respective grooves, thereby reducing the risk of loosening or falling off of the magnetic rings due to long-term use or cleaning, and thus improving the durability and reliability of the overall structure. Attached Figure Description

[0018] The invention will now be further described with reference to the accompanying drawings.

[0019] Figure 1 This is a perspective view of the present invention; Figure 2 This is an exploded view of the present invention; Figure 3 This is a cross-sectional view of the upper cover in this invention; Figure 4 yes Figure 3 Enlarged view of a portion of point A in the middle; Figure 5 This is an exploded cross-sectional view of the upper cover in this invention; Figure 6 yes Figure 5 Enlarged view of a section at point B in the middle; Figure 7 This is a cross-sectional view of the filter screen. Figure 8 yes Figure 7 Enlarged view of a section at point C; Figure 9 This is a flowchart of the quick assembly and replacement method for filters; In the diagram: 1. Top cover; 11. First magnetic ring; 12. First groove; 2. Filter screen; 21. Second magnetic ring; 22. Second groove; 3. First pin; 31. First insertion hole; 32. Second insertion hole; 33. Second pin; 34. Third insertion hole; 35. Fourth insertion hole; 4. First flexible pad; 41. First positioning groove; 42. Second positioning groove; 43. Second flexible pad; 44. Third positioning groove; 45. Third positioning groove. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0021] like Figures 1 to 2As shown in the figure, a magnetic ceramic filter according to an embodiment of the present invention includes an upper cover 1 and a filter screen 2; the bottom of the upper cover 1 has a first groove 12; a first magnetic ring 11 is embedded in the first groove 12; the top of the filter screen 2 has a second groove 22; a second magnetic ring 21 is embedded in the second groove 22; the first magnetic ring 11 and the second groove 22 are magnetically attracted to each other; wherein the magnetic poles of the surfaces of the first magnetic ring 11 and the second groove 22 that are close to each other are different magnetic poles, so as to achieve attraction when the first magnetic ring 11 and the second groove 22 are close to each other; the bottom of the upper cover 1 and the top of the filter screen 2 are spliced ​​and aligned, wherein the outer surface of the upper cover 1 after the filter screen 2 is aligned is a smooth surface.

[0022] By setting a first magnetic ring 11 embedded at the bottom of the upper cover 1 and a second magnetic ring 21 embedded at the top of the filter screen 2, with the magnetic poles of the first magnetic ring 11 and the second magnetic ring 21 having opposite magnetic poles to achieve mutual attraction, and designing the bottom of the upper cover 1 and the top of the filter screen 2 as a structure that can be spliced ​​and aligned, so that the outer surfaces of the two form a smooth transition after alignment; when the user places the filter screen 2 at the mouth of the container and brings the upper cover 1 close from above, the magnetic attraction generated between the first magnetic ring 11 and the second magnetic ring 21 will automatically pull the upper cover 1 and the filter screen 2 closer and aligned until the bottom of the upper cover 1 and the top of the filter screen 2 are tightly attached. At this time, the upper cover 1 and the filter screen 2 are firmly combined into a whole by magnetic force, and by... The smooth outer surface reduces interference with the edges of the sink or container. This magnetic connection design eliminates the need for traditional overlapping or snap-fit ​​methods, relying instead on magnetic force to provide a continuous and uniform adsorption. This significantly reduces the likelihood of the filter shifting or falling off when subjected to external impacts or liquid shocks, improving the filter's positioning stability at the container opening. Furthermore, when replacing the filter, the user simply overcomes the magnetic force to separate the cover 1 from the filter, easily removing the old filter without complex snap-fit ​​unlocking operations, thus enhancing the convenience of filter replacement in confined or unstable environments.

[0023] like Figures 6 to 8As shown, the bottom first groove 12 of the upper cover 1 has multiple first insertion holes 31 on its top inner wall; the first magnetic ring 11 has multiple second insertion holes 32 vertically penetrating through its middle; each second insertion hole 32 corresponds vertically to the first insertion hole 31 and has the same diameter; a first pin 3 is interference-fitted into the second insertion hole 32 and the first insertion hole 31; when the first pin 3 is inserted into the second insertion hole 32 and the first insertion hole 31, the volume of the first pin 3 can be reduced by cooling before insertion. The filter screen 2 has multiple fourth insertion holes 35 on the bottom inner wall of the second groove 22; the second magnetic ring 21 has a third insertion hole 34 vertically penetrating through its middle; each third insertion hole 34 corresponds vertically to the fourth insertion hole 35 and has the same diameter; the fourth insertion hole 35 and the third insertion hole 34 are internally interference-fitted with a second pin 33; when the second pin 33 is inserted into the third insertion hole 34 and the fourth insertion hole 35, the volume of the second pin 33 can be reduced by cooling before insertion.

[0024] The first magnetic ring 11 is fixed to the upper cover 1 by an interference fit with the first insertion hole 31 and the second insertion hole 32 via the first pin 3. The second magnetic ring 21 is fixed to the filter screen 2 by an interference fit with the third insertion hole 34 and the fourth insertion hole 35 via the second pin 33. The pins are pre-cooled and contracted before insertion, and then expand to room temperature after insertion to form a firm interference fit. This cold-shrink interference fit fixing method allows the first magnetic ring 11 and the second magnetic ring 21 to be securely embedded in their respective slots, reducing the risk of the magnetic rings loosening or falling off due to long-term use or cleaning, thereby improving the durability and reliability of the overall structure.

[0025] like Figures 6 to 8 As shown, the first insertion hole 31 has a first positioning groove 41 inside; the second insertion hole 32 has a second positioning groove 42 inside; two first flexible pads 4 are fixed in the middle of the first pin 3. When the first pin 3 is inserted into the first insertion hole 31, the upper first flexible pad 4 is stuck in the first positioning groove 41, and the lower first flexible pad 4 is stuck in the second positioning groove 42 when the first pin 3 is inserted into the second insertion hole 32; the fourth insertion hole 35 has a third positioning groove 45 inside. The third insertion hole 34 has a third positioning groove 44 inside; the second pin 33 has two second flexible pads 43 fixed in the middle. When the second pin 33 is inserted into the third insertion hole 34, the upper second flexible pad 43 is stuck in the third positioning groove 44. When the second pin 33 is inserted into the fourth insertion hole 35, the lower second flexible pad 43 is stuck in the third positioning groove 45. The first flexible pad 4 and the second flexible pad 43 can be inserted by elastic deformation during insertion.

[0026] By setting a first flexible pad 4 and a second flexible pad 43 in the middle of the first pin 3 and the second pin 33, and opening positioning grooves in the inner walls of the corresponding insertion holes; when the pin is inserted, the flexible pad is squeezed and undergoes elastic deformation, passes through the narrow channel, reaches the positioning groove, restores its original shape, and is locked into the groove; through the locking cooperation between the flexible pad and the positioning groove, the anti-loosening ability of the pin is further enhanced, making it less likely for the magnetic ring to undergo axial displacement when subjected to vibration or impact, thereby improving the long-term stability of the magnetic connection.

[0027] The first magnetic ring 11 and the second magnetic ring 21 are made of high-temperature resistant magnetic materials, such as samarium cobalt magnets and high-temperature resistant neodymium iron boron magnets.

[0028] By selecting high-temperature resistant magnetic materials such as samarium cobalt magnets or high-temperature resistant neodymium iron boron to manufacture the first magnetic ring 11 and the second magnetic ring 21, the magnetic properties of the magnetic rings are not easily significantly attenuated when they come into contact with high-temperature liquids (such as hot soup or boiling water) or are in a high-temperature cleaning environment. By using high-temperature resistant magnetic materials, the magnetic attraction stability of the filter in high-temperature use scenarios is improved, thereby reducing the risk of loosening of the connection caused by the decrease in magnetic force due to temperature rise.

[0029] The first magnetic ring 11 is fixed to the upper cover 1 by adhesive; the second magnetic ring 21 is fixed to the filter screen 2 by adhesive; the adhesive can be a high-temperature resistant food-grade adhesive, such as Kingstar multi-functional soft adhesive, H-1508 silicone adhesive, etc., wherein there is a gap of about 0.1-0.2 mm between the upper cover 1 and the first magnetic ring 11, and a gap of about 0.1-0.2 mm between the second magnetic ring 21 and the second groove 22.

[0030] The first magnetic ring 11 is bonded to the first groove 12 of the upper cover 1 and the second magnetic ring 21 is bonded to the second groove 22 of the filter screen 2 using high-temperature resistant food-grade adhesive, with a small gap of 0.1-0.2 mm reserved between the magnetic ring and the groove wall. This gap can accommodate the adhesive to form a uniform bonding layer and also provide a buffer space for the slight thermal expansion and contraction of the magnetic ring when the temperature changes. The design of bonding and reserving the gap further enhances the connection between the magnetic ring and the shell, while reducing the cracking of the adhesive layer or the breakage of the magnetic ring caused by thermal stress, thereby improving the overall durability and food safety of the combined filter.

[0031] The outer surface of the first magnetic ring 11 and the second magnetic ring 21 is completely cast or sintered with a layer of ceramic.

[0032] By casting or sintering a dense ceramic layer on the outer surface of the first magnetic ring 11 and the second magnetic ring 21, the magnet substrate is completely isolated from the external environment (such as water, acidic or alkaline liquids). The ceramic layer has good chemical stability and corrosion resistance, which reduces the possibility of oxidation or corrosion of the magnetic material due to contact with liquid during use, thereby extending the service life of the magnetic ring and ensuring the hygienic performance of the filter.

[0033] A method for quick assembly and replacement of a magnetic ceramic filter includes the following steps: S1: Provide a magnetic ceramic filter as described above, wherein a first magnetic ring 11 is embedded at the bottom of the upper cover 1 and a second magnetic ring 21 is embedded at the top of the filter screen 2; S2: Place the filter screen 2 at the mouth of the container with its second magnetic ring 21 facing upwards; S3: With the top cover 1 facing down, approach the filter screen 2 from above. Utilize the magnetic attraction generated by the opposite magnetic poles between the first magnetic ring 11 and the second magnetic ring 21 to automatically align and attract the top cover 1 and the filter screen 2, thus completing the assembly. S4: When it is necessary to replace filter 2, manually apply a separation force to overcome the magnetic attraction and remove the top cover 1 from filter 2; S5: After replacing the new filter 2, repeat steps S2 to S3 to complete the quick assembly of the new filter.

[0034] In step S3, since the bottom of the top cover 1 and the top of the filter screen 2 are designed to be spliced ​​and aligned and have smooth outer surfaces, after they are sucked together, they form a continuous and smooth transition with the container opening.

[0035] When the first magnetic ring 11 and the second magnetic ring 21 are made of high-temperature resistant magnetic materials, the method is suitable for high-temperature liquid filtration scenarios, and its magnetic attraction remains stable after contact with high-temperature liquids.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A magnetic ceramic filter, characterized in that: It includes a top cover (1) and a filter screen (2); the bottom of the top cover (1) is provided with a first groove (12); a first magnetic ring (11) is embedded inside the first groove (12); The filter screen (2) has a second groove (22) at the top; a second magnetic ring (21) is embedded inside the second groove (22); the first magnetic ring (11) and the second groove (22) are magnetically attracted to each other; The bottom of the top cover (1) and the top of the filter screen (2) are designed to be spliced ​​and aligned.

2. The magnetic ceramic filter according to claim 1, characterized in that: The top inner wall of the bottom first groove (12) of the upper cover (1) is provided with a plurality of first insertion holes (31); a plurality of second insertion holes (32) are vertically penetrated through the middle of the first magnetic ring (11); each second insertion hole (32) is vertically corresponding to the first insertion hole (31) and has the same diameter; a first pin (3) is interference-fitted into the second insertion hole (32) and the first insertion hole (31); The bottom inner wall of the second groove (22) on the filter screen (2) is provided with a plurality of fourth insertion holes (35); the second magnetic ring (21) is vertically penetrated by a third insertion hole (34); each third insertion hole (34) is vertically corresponding to the fourth insertion hole (35) and has the same diameter; the fourth insertion hole (35) and the third insertion hole (34) are interference-fitted with a second pin (33).

3. A magnetic ceramic filter according to claim 2, characterized in that: The first insertion hole (31) has a first positioning groove (41) inside; the second insertion hole (32) has a second positioning groove (42) inside; two first flexible pads (4) are fixed in the middle of the first pin (3). When the first pin (3) is inserted into the first insertion hole (31), the first flexible pad (4) at the upper part of the middle of the first pin (3) is stuck in the first positioning groove (41); when the first pin (3) is inserted into the second insertion hole (32), the first flexible pad (4) at the lower part of the middle of the first pin (3) is stuck in the second positioning groove (42). The fourth insertion hole (35) has a third positioning groove (45) inside; the third insertion hole (34) has a third positioning groove (44) inside; two second flexible pads (43) are fixed in the middle of the second pin (33). When the second pin (33) is inserted into the third insertion hole (34), the upper second flexible pad (43) is stuck in the third positioning groove (44), and the lower second flexible pad (43) is stuck in the third positioning groove (45) when the second pin (33) is inserted into the fourth insertion hole (35).

4. A magnetic ceramic filter according to claim 1, characterized in that: The first magnetic ring (11) and the second magnetic ring (21) are made of high-temperature resistant magnetic material.

5. A magnetic ceramic filter according to claim 4, characterized in that: The first magnetic ring (11) is fixed to the upper cover (1) by adhesive; the second magnetic ring (21) is fixed to the filter screen (2) by adhesive.

6. A magnetic ceramic filter according to claim 1, characterized in that: The outer surface of the first magnetic ring (11) and the second magnetic ring (21) is completely cast or sintered with a layer of ceramic.

7. A method for rapid assembly and replacement of a magnetic ceramic filter, characterized in that, Includes the following steps: S1: Provide a magnetic ceramic filter as described in any one of claims 1-6, wherein a first magnetic ring (11) is embedded at the bottom of the top cover (1) and a second magnetic ring (21) is embedded at the top of the filter screen (2); S2: Place the filter (2) at the mouth of the container with its second magnetic ring (21) facing upwards; S3: With the top cover (1) facing down, approach the filter screen (2) from above. Utilize the magnetic attraction generated by the opposite magnetic poles between the first magnetic ring (11) and the second magnetic ring (21) to automatically align and attract the top cover (1) and the filter screen (2), thus completing the assembly. S4: When it is necessary to replace the filter (2), manually apply a separation force to overcome the magnetic attraction and remove the top cover (1) from the filter (2); S5: After replacing the new filter (2), repeat steps S2 to S3 to complete the quick assembly of the new filter.

8. The method for rapid assembly and replacement of a magnetic ceramic filter according to claim 7, characterized in that: In step S3, since the bottom of the cover (1) and the top of the filter (2) are designed to be spliced ​​and aligned and have a smooth outer surface, the two are sucked together to form a continuous and smooth transition with the container opening.

9. A method for rapid assembly and replacement of a magnetic ceramic filter according to claim 8, characterized in that: When the first magnetic ring (11) and the second magnetic ring (21) are made of high-temperature resistant magnetic material, the method is suitable for high-temperature liquid filtration scenarios, and its magnetic attraction remains stable after contact with high-temperature liquid.

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