Tea filter screen

Abstract

The utility model relates to a tea filter screen which comprises a filter cylinder, the filter cylinder is formed by winding a first filter screen, the first filter screen is provided with an edge a and an edge b, the left side and the right side of the edge b are respectively provided with a first positioning hole and a second positioning hole, the first filter screen is provided with a plurality of groups of first filter holes, the bottom of the filter cylinder is provided with a second filter screen, and the second filter screen is provided with a plurality of groups of second filter holes; a transition area is arranged between each group of first filter holes and second filter holes; the first filter holes and the second filter holes are of honeycomb structures. The first filter holes and the second filter holes are arranged to be of a honeycomb structure, the honeycomb structure is composed of a plurality of small units, the units are tightly connected, and continuous spaces among the units not only have the basic function of filtering tea water, but also enable force to be better dispersed. The first filter screen and the second filter screen are guaranteed not to be locally damaged due to uneven stress in the using process, so that the overall strength and toughness of the structure are improved, and the service life of the filter screens is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of daily necessities, and particularly relates to a tea filter. Background Art

[0002] In tea culture, tea filters are an indispensable tool that plays an important role in purifying tea soup and isolating tea residues. However, most existing tea filters adopt a design method of laying filter holes over a large area. Although it ensures the filtering effect, it also brings structural problems: the filter holes laid over a large area make the overall structure of the tea filter loose, lacking sufficient support and stability. During the tea brewing process, with the flow of tea soup and the impact of hot water, the tea filter needs to withstand forces from multiple directions, which makes it difficult to evenly distribute the forces on various parts of the tea filter, which easily leads to local stress concentration, causing some parts of the tea filter to be damaged and unable to be used.

[0003] Therefore, a tea filter with strong rigidity and toughness is designed to reduce the damage of the tea filter due to uneven force during filtration and extend its service life. Utility Model Content

[0004] The purpose of the utility model is to provide a tea filter with strong rigidity and toughness, reduce the damage of the tea filter due to uneven force during filtration, and extend its service life, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a tea filter, including a filter cartridge, the filter cartridge is formed by winding a first filter, the first filter has an a side and a b side, the left and right sides of the b side are provided with a first positioning hole and a second positioning hole, the first filter has multiple groups of first filter holes, a second filter is provided at the bottom of the filter cartridge, and the second filter has multiple groups of second filter holes.

[0006] Preferably, a transition zone is provided between each group of the first filter holes and the second filter holes.

[0007] Preferably, both the first filter hole and the second filter hole are honeycomb structures.

[0008] Preferably, the filter cartridge is cylindrical and hollow, and is provided with a first opening and a second opening.

[0009] Preferably, the first opening is provided with a bracket, and the bracket extends outward in a circumferential direction to form a clamping ring.

[0010] Preferably, the outer side of the second filter screen is connected to the second opening by providing a welding area.

[0011] Preferably, the overall preparation material is pure titanium metal.

[0012] Preferably, the number of groups of the first filter holes and the second filter holes is 4.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows: The filter cartridge in the present utility model is formed by winding a first filter screen. Then, by providing first positioning holes and second positioning holes on the first filter screen, a cylindrical shape with a standard format (equal upper and lower diameters and two openings parallel) is ensured, providing uniform support for the structure of the entire tea strainer and enhancing stability. A transition zone is also provided between each group of first filter holes and second filter holes. The transition zone is not opened, thus firmly connecting each group of filter holes, significantly improving the compressive strength and mechanical strength of the filter screen and maintaining its stability. The first filter holes and the second filter holes are also arranged in a honeycomb structure. The honeycomb structure consists of many small units, and there are tight connections between these units. The continuous spaces between these units can not only perform the basic function of filtering tea water, but also enable the force to be better dispersed, ensuring that the first filter screen and the second filter screen will not be locally damaged due to uneven force during use, thereby improving the overall strength and toughness of the structure and extending the service life of the filter screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0015] Figure 2 is a structural schematic diagram of the filter cartridge in the present utility model;

[0016] Figure 3 is a structural schematic diagram of the first filter screen in the present utility model;

[0017] Figure 4 is a structural schematic diagram of the second filter screen in the present utility model.

[0018] Reference numerals in the figures: 1 - first filter screen, 101 - a side, 102 - b side, 201 - first positioning hole, 202 - second positioning hole, 3 - filter cartridge, 4 - first filter hole, 5 - transition zone, 6 - first opening, 7 - second opening, 8 - bracket, 9 - snap ring, 10 - second filter screen, 11 - second filter hole, 12 - welding area. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0020] Embodiment 1

[0021] As Figures 1 to 4 shown, a tea strainer includes a filter cartridge 3 which is wound by a first filter screen 1. The first filter screen 1 has an a side 101 and a b side 102. First positioning holes 201 and second positioning holes 202 are respectively formed on both left and right sides of the b side 102. The first filter screen 1 has multiple groups of first filter holes 4. A second filter screen 10 is provided at the bottom of the filter cartridge 3. The second filter screen 10 has multiple groups of second filter holes 11. A transition area 5 is provided between each group of the first filter holes 4 and the second filter holes 11. Both the first filter holes 4 and the second filter holes 11 are of honeycomb structure. The filter cartridge 3 is in a cylindrical hollow shape and is provided with a first opening 6 and a second opening 7. A bracket 8 is arranged at the first opening 6, and the bracket 8 extends outward in a circumferential direction to form a snap ring 9. The outer side of the second filter screen 10 is connected to the second opening 7 by providing a welding area 12. The overall preparation material is pure titanium metal. The number of groups of the first filter holes 4 and the second filter holes 11 is 4.

[0022] In the utility model, the filter cartridge 3 is wound by the first filter screen 1. Then, by forming the first positioning holes 201 and the second positioning holes 202 on the first filter screen 1, it is ensured that the filter cartridge 3 forms a cylindrical shape with equal upper and lower diameters in a standard format and the two openings are parallel, providing uniform support for the structure of the entire tea strainer and enhancing the stability. A transition area 5 is also provided between each group of the first filter holes 4 and the second filter holes 11. The transition area 5 does not have openings, so as to stably connect each group of filter holes, significantly improving the compressive strength and mechanical strength of the filter screen and maintaining its stability. The first filter holes 4 and the second filter holes 11 are also set as honeycomb structures. The honeycomb structure is composed of many small units, and there is a tight connection between each unit. The continuous space between these units can not only perform the basic function of filtering tea water, but also enable the force to be better dispersed, ensuring that the first filter screen 1 and the second filter screen 10 will not be locally damaged due to uneven force during use, thereby improving the overall strength and toughness of the structure and prolonging the service life of the filter screen.

[0023] Embodiment 2

[0024] As Figures 1 to 4 shown, a tea strainer includes a first filter screen 1 which is wound and welded by a rectangular metal sheet. The rectangular metal sheet has a parallel a side 101 and a b side 102, and the length of the b side 102 is less than that of the a side 101. During welding, only the b side 102 needs to be overlapped and welded.

[0025] Both of the two b - sides 102 are provided with a first positioning hole 201 and a second positioning hole 202. Then, when the staff welds the rectangular metal sheet, they only need to bend the a - side 101 so that the b - sides 102 overlap and contact until the first positioning holes 201 coincide with each other and the second positioning holes 202 coincide with each other. At this time, the entire first filter screen 1 will form a cylindrical hollow filter cartridge 3. Among them, the first positioning holes 201 and the second positioning holes 202 on the same side are both on the same vertical line, and the two first positioning holes 201 and the two second positioning holes 202 are both on the same horizontal line. After intersecting pairwise, it can ensure that the filter cartridge 3 formed by winding has a standard format with equal upper and lower diameters and two openings parallel to each other. Compared with another winding result - the upper and lower diameters of the cone are not equal, the side surface of the cylindrical filter cartridge 3 is a complete curved surface, providing uniform support for the entire structure, while the side surface of the cone gradually shrinks, and the support may be weak in some areas. Applied to this field, it can be deduced that this product is used to filter tea, drive the tea water to flow out through the filter cartridge 3, and the tea leaves will be soaked in hot water after being put into the filter cartridge 3 and are impacted by the hot water. The cylindrical filter cartridge 3 has stronger stability, which can ensure the long - term use of the filter cartridge 3.

[0026] At the same time, in this embodiment, both the first positioning hole 201 and the second positioning hole 202 are opened at a certain distance from the b - side 102. That is, after the first positioning hole 201 and the second positioning hole 202 coincide with each other, the b - sides 102 will surely overlap. Then, welding the overlapping part can further ensure the quality of the filter cartridge 3 formed after the first filter screen 1 is wound. Compared with the situation where the b - sides 102 only contact each other and rely solely on solder to achieve the connection effect of the b - sides 102, the welding area of the overlapping welding is larger, making the formed filter cartridge 3 more firm, and it can also ensure the long - term use of the filter cartridge 3.

[0027] Embodiment 3

[0028] On the basis of Embodiment 2, the first filter screen 1 also has multiple groups of first filter holes 4. The first filter holes 4 refer to holes of a certain size opened on the metal - sheet - shaped first filter screen 1 through a certain technology. They are used to filter the tea water while preventing tea leaves and tea residues from falling into the already filtered tea water, affecting the drinking taste.

[0029] The conventional first filter screen 1 generally directly covers the first filter holes 4 to ensure the smooth filtration of tea water. However, this highly dense arrangement of the first filter holes 4 weakens the overall structure of the first filter screen 1 and reduces its stability. Considering the above factors, in this embodiment, the first filter holes 4 are divided into multiple groups. Here, 4 groups are used for simple illustration, and the actual setting can be changed according to actual needs. That is, there are 4 groups of first filter holes 4 provided on the first filter screen 1. Each group of first filter holes 4 is arranged parallel to the b side 102, and there is a transition area 5 between each group of first filter holes 4. There are 4 transition areas 5 in the filter cylinder 3 formed by winding the transition area 5. The transition area 5 does not have openings, thereby firmly connecting each group of first filter holes 4, significantly improving the compressive strength and mechanical strength of the first filter screen 1, maintaining its stability, and extending the service life of the first filter screen 1.

[0030] Embodiment 4

[0031] As Figures 1 to 4 shown in a tea filter screen, it should be noted that the tea water filter cylinder 3 generally refers to a hollow filter cylinder 3 with one opening and one closed end. Tea leaves are put in through the opening, and then hot water is poured into the filter cylinder 3 through the opening, so that the hot water impacts the tea leaves downward to make tea water, and the tea water then flows out through the first filter holes 4 at the closed bottom. That is, the filter cylinder 3 has a first opening 6 and a second opening 7. The first opening 6 faces upward, and a bracket 8 is provided at the first opening 6, so that the filter cylinder 3 that completely extends into the water cup can stay at the cup mouth, and the tea water directly falls into the water cup to avoid scalding. Here, the filter cylinder 3 needs to completely extend into the water cup. Then, the first opening 6 above the filter cylinder 3 can extend outward to form a bracket 8. The bracket 8 extends circumferentially outward, with a diameter larger than the cup mouth, and the part exceeding the cup mouth forms a snap ring 9. The snap ring 9 is arranged parallel to the cup mouth. Thus, the filter cylinder 3 can be horizontally stuck above the cup mouth under the action of the snap ring 9, and then extends into and stays inside the cup mouth under the action of the bracket 8 to cooperate with the brewing and filtration of the tea water. Similarly, after brewing, the user can directly pick out the snap ring 9 to take out the filter cylinder 3 and the tea leaves and clean the filter cylinder 3.

[0032] The second opening 7 of the filter cylinder 3 faces downward, and a second filter screen 10 with multiple groups of second filter holes 11 needs to be provided. Here, the second filter screen 10 is a circular metal sheet. The actual diameter of the second filter screen 10 is larger than the diameter of the filter cylinder 3. Thus, the second filter screen 10 can fold up the side edges of the excess part to form a welding area 12, and weld the welding area 12 to the inner wall of the second opening 7 to seal the bottom of the filter cylinder 3, thereby realizing the blocking and supporting of the tea leaves. Multiple groups of second filter holes 11 are also provided on the second filter screen 10, and each group of second filter holes 11 has a transition area 5, which realizes the compressive strength and mechanical strength of the second filter screen 10, reduces local damage of the second filter screen 10 due to uneven stress during filtration, and can maintain its stability even when subjected to strong impact force, extending the service life of the second filter screen 10.

[0033] Example 5

[0034] As Figures 1 to 4 shown, a tea strainer, the first filter holes 4 and the second filter holes 11 are both arranged in a honeycomb structure. The honeycomb structure is composed of many small units, and there is a tight connection between each unit. The continuous space between these units can not only perform the basic function of filtering tea water, but also enable the force to be better dispersed, thereby improving the overall strength and toughness of the structure.

[0035] When the first filter screen 1 and the second filter screen 10 are impacted by the hot water, the honeycomb-shaped filter holes can support the structure like multiple small columns, dispersing the pressure onto each unit. This dispersion effect effectively reduces the pressure concentration on a single part, avoiding rupture caused by excessive local pressure, thereby enhancing its stability; at the same time, when the first filter screen 1 and the second filter screen 10 are impacted or vibrated, the honeycomb structure can absorb and disperse these energies, reducing the force and damage on the filter screen itself, and also enhancing the toughness of the first filter screen 1 and the second filter screen 10 to a certain extent.

[0036] It should be noted that the whole product is made of pure titanium metal. First of all, pure titanium metal is a non-toxic and odorless material, which will not cause harm to human health; secondly, compared with the conventional stainless steel material, the filter screen made of pure titanium metal has the following multiple advantages:

[0037] 1. The advantages of pure titanium metal being lightweight and high-strength, the prepared filter screen is light in weight and not easy to deform, which is convenient to carry and use;

[0038] 2. Pure titanium metal has excellent corrosion resistance and can maintain its stability and functionality in various environments. During the tea water filtering process, the titanium filter screen can resist the corrosion of tea water and extend the service life of the filter screen;

[0039] 3. The surface of pure titanium metal is smooth and corrosion-resistant, and it is not easy to adhere to dirt such as tea stains, which is convenient for cleaning and maintaining the filter screen during use;

[0040] 4. A thin and strong oxide film can be formed on the surface of pure titanium metal, which has the function of antibacterial and freshness preservation, helping to maintain the freshness and taste of tea water, etc.

[0041] In summary, compared with the conventional materials, the filter screen made of pure titanium metal has the advantages of lightweight and high-strength, strong corrosion resistance, easy cleaning and maintenance, antibacterial and freshness preservation, etc., making the pure titanium metal filter screen have high competitiveness and application value.

[0042] It should be noted that in this text, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising one..." does not exclude the existence of additional identical elements in the process, method, article or device comprising the said element.

[0043] As described above, it is only used to illustrate the technical solution of the present utility model rather than to limit it. Any other modifications or equivalent replacements made by those of ordinary skill in the art to the technical solution of the present utility model should be covered within the scope of the claims of the present utility model as long as they do not depart from the spirit and scope of the technical solution of the present utility model.

Claims

1. A tea filter, comprising a filter cartridge (3), characterized in that: The filter cartridge (3) is formed by winding a first filter screen (1), the first filter screen (1) having an a side (101) and a b side (102), the b side (102) having a first positioning hole (201) and a second positioning hole (202) on both sides, the first filter screen (1) having a plurality of groups of first filter holes (4), the bottom of the filter cartridge (3) being provided with a second filter screen (10), the second filter screen (10) having a plurality of groups of second filter holes (11).

2. A tea filter according to claim 1, characterized in that: A transition zone (5) is provided between each group of the first filter holes (4) and the second filter holes (11).

3. A tea filter according to claim 2, characterized in that: The first filter hole (4) and the second filter hole (11) are both honeycomb structures.

4. A tea filter according to claim 1, characterized in that: The filter cartridge (3) is cylindrical and hollow, and is provided with a first opening (6) and a second opening (7).

5. A tea filter according to claim 4, characterized in that: The first opening (6) is provided with a bracket (8), and the bracket (8) extends outward in a circumferential direction to form a clamping ring (9).

6. A tea filter according to claim 4, characterized in that: The outer side of the second filter screen (10) is connected to the second opening (7) by providing a welding area (12).

7. A tea filter according to claim 1, characterized in that: The overall preparation material is pure titanium metal.

8. The tea filter according to claim 1, characterized in that: The number of groups of the first filter holes (4) and the second filter holes (11) is 4.

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