Filter structure, floor drain, colander, draining basket and water tank filter

Abstract

The utility model discloses a filtering structure which comprises a fixing lantern ring, a first filtering piece and a second filtering piece, the fixing lantern ring is arranged on the outer sides of the first filtering piece and the second filtering piece in a sleeving mode, and at least one of the first filtering piece and the second filtering piece is rotationally connected to the fixing lantern ring. And the first filtering piece and the second filtering piece are switched between a splicing state and an opening state through relative rotation or rotation relative to the fixed lantern ring. In the splicing state, the first filtering piece and the second filtering piece are spliced with each other, a filtering cavity with an opening in the top is defined between the first filtering piece and the second filtering piece, and a plurality of filtering through holes are formed in the bottom and / or the side edge of the filtering cavity; in the open state, the first filtering piece and the second filtering piece are separated from each other at the spliced part and an opening is formed in the bottom. On the basis, the utility model further discloses a floor drain, a colander, a draining basket and a water tank filter. When in use, objects are convenient to take and easy to clean.

Description

Technical Field

[0001] The utility model relates to the technical field of daily necessities, and particularly relates to a filtering structure, a floor drain, a strainer, a draining basket and a sink filter. Background Art

[0002] In modern family life, the sink in the kitchen is an important facility for washing vegetables, fruits and tableware. In order to prevent solid wastes such as fruit and vegetable peels and food residues falling during the washing process from entering the sewer and causing blockage, people usually install a filter at the drain outlet of the sink to intercept solid wastes.

[0003] The structures of many existing filters are similar to those shown in Chinese patents CN219879293U and CN213390395U, and have the following inconveniences when in use: 1. The lifting rod and the handle for lifting are surrounded by solid wastes, and it is easy to get dirty hands when extracting; 2. When removing solid wastes, it is necessary to turn it over for dumping, which is rather troublesome, and it is inconvenient to take when turning it over; 3. Hindered by the lifting rod and the handle, it is not easy to clean the inside of the filter. When cleaning, it is necessary to turn it over and rinse it reversely to flush out the residues, and the operation is troublesome; 4. Solid wastes are easily stuck in the filtering holes and are not easy to take out.

[0004] Similar to the sink filter, the floor drain in the bathroom also has the functions of draining water and intercepting solid wastes. However, different from the sink filter, the solid wastes intercepted by the floor drain are mostly slender solid wastes such as fibers and hairs, and such solid wastes also have the problem of being easily wound around the floor drain and not easy to clean. Content of the Utility Model

[0005] The purpose of the utility model is to provide a filtering structure, and it is more convenient to take out the intercepted solid objects during use. The utility model also aims to provide a floor drain, a strainer, a draining basket and a sink filter based on the filtering structure.

[0006] In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

[0007] A filtering structure includes a fixed collar, a first filtering member and a second filtering member. The fixed collar is sleeved outside the first filtering member and the second filtering member, and at least one of the first filtering member and the second filtering member is rotatably connected to the fixed collar; the first filtering member and the second filtering member switch between a combined state and an open state through relative rotation or rotation relative to the fixed collar.

[0008] In the assembled state, the first filter element and the second filter element are assembled with each other, and a filter cavity with an open top is formed by surrounding between the first filter element and the second filter element, and a plurality of filter through-holes are provided at the bottom and / or side of the filter cavity; in the open state, the joining part between the first filter element and the second filter element is separated from each other and an opening is formed at the bottom.

[0009] Further, two first connecting parts are oppositely arranged at the upper part of the first filter element, and two second connecting parts are oppositely arranged at the upper part of the second filter element, and the positions of the first connecting parts and the second connecting parts correspond to each other one by one.

[0010] The first filter element and the second filter element are respectively rotationally connected to the fixed collar along the same direction through the first connecting part and the second connecting part; or, one of the first filter element and the second filter element is integrally formed on the fixed collar.

[0011] Further, a plurality of first comb teeth extending towards the second filter element are formed by extending the bottom of the first filter element, and the first comb teeth are arranged at intervals; a plurality of second comb teeth extending towards the first filter element are formed by extending the bottom of the second filter element, and the second comb teeth are arranged at intervals; in the assembled state, the first comb teeth and the second comb teeth are arranged in an interlaced manner, and at least one filter through-hole is formed by surrounding the side walls of the first comb teeth and the second comb teeth.

[0012] Further, an opening and closing flap is formed by extending the top of the first filter element upwards, and the opening and closing flap is located at the side of the first connecting part; or, a first pinching part is formed by extending the top of the first filter element upwards, a second pinching part is formed by extending the top of the second filter element upwards, and the positions of the first pinching part and the second pinching part correspond to each other.

[0013] Further, a plurality of horizontal stop platforms are formed by extending inwards on the inner side surface of the fixed collar, the horizontal stop platforms are arranged at the same height and are uniformly arranged along the circumferential direction of the fixed collar; a first support step is formed by extending outwards at the upper part of the first filter element, and a second support step is formed by extending outwards at the upper part of the second filter element; in the assembled state, the first support step and the second support step are respectively placed on the horizontal stop platforms.

[0014] Further, the first filter element is rotatably connected to the fixed collar through a rotating shaft, and a torsion spring is sleeved outside the rotating shaft. The torsion spring abuts against the first filter element and the second filter element respectively to maintain the assembled state of the first filter element and the second filter element; alternatively, the first filter element has a first mating surface, and the second filter element has a second mating surface. Magnets are embedded on both the first mating surface and the second mating surface; in the assembled state, the first mating surface and the second mating surface are tightly attached to each other, and the magnets on the first mating surface and the magnets on the second mating surface are attracted to each other.

[0015] A sink filter includes the above-mentioned filtering structure.

[0016] A floor drain includes the above-mentioned filtering structure.

[0017] A draining basket includes the above-mentioned filtering structure and a liquid holding basin. The fixed collar is clamped on the upper edge of the liquid holding basin, and the first filter element and the second filter element are erected in the liquid holding basin through the fixed collar.

[0018] A ladle includes the above-mentioned filtering structure and a hand-held handle. One end of the hand-held handle is fixedly connected to the fixed collar, and a first adjusting lever and / or a second adjusting lever are rotatably arranged on the hand-held handle; one end of the first adjusting lever is fixedly connected to the first filter element and is rotatably arranged coaxially with the first filter element; one end of the second adjusting lever is fixedly connected to the second filter element and is rotatably arranged coaxially with the second filter element.

[0019] The utility model has the following beneficial effects:

[0020] 1. The utility model is provided with a fixed collar, a first filter element and a second filter element. By the relative rotation between the first filter element and the second filter element, or by the rotation of the first filter element and the second filter element relative to the fixed collar, the first filter element and the second filter element can be made to approach each other, and the first filter element and the second filter element can be switched to the assembled state for filtering. Also, the two can be made to move away from each other at the joint to switch to the open state, so that the intercepted solid objects can directly fall and be taken out, and the taking-out method is relatively convenient.

[0021] 2. The utility model is provided with a first comb tooth and a second comb tooth. In the assembled state, the side wall of the first comb tooth and the side wall of the second filter element can enclose a filtering through hole for filtering. In the open state, due to the structure of the first comb tooth and the second comb tooth, solid objects are not easily stuck. For example, long and thin solid objects such as fibrous materials and hairs are not easily wound around the first filter element and the second filter element and can be directly removed.

[0022] 3. The utility model is applicable to a variety of usage scenarios and is convenient and easy to clean during use. Description of the Drawings

[0023] Figure 1 This is the schematic diagram (1) of the filtering structure of the present utility model.

[0024] Figure 2 This is the top view schematic diagram of the filtering structure of the present utility model.

[0025] Figure 3 This is the side view schematic diagram of the filtering structure of the present utility model.

[0026] Figure 4 This is the schematic diagram of the fixed collar structure of the present utility model.

[0027] Figure 5 This is the schematic diagram of the first filter element structure of the present utility model.

[0028] Figure 6 This is the schematic diagram of the second filter element structure of the present utility model.

[0029] Figure 7 This is the schematic diagram of the filtering structure of the present utility model in the open state.

[0030] Figure 8 This is the top view schematic diagram of the filtering structure of the present utility model in the open state.

[0031] Figure 9 This is the side view schematic diagram of the filtering structure of the present utility model in the open state.

[0032] Figure 10 This is the schematic diagram (2) of the filtering structure of the present utility model.

[0033] Figure 11 This is the schematic diagram (3) of the filtering structure of the present utility model.

[0034] Figure 12 This is the schematic diagram (4) of the filtering structure of the present utility model.

[0035] Figure 13 This is the schematic diagram (1) of the connection structure between the first filter element and the second filter element of the present utility model.

[0036] Figure 14 This is the schematic diagram (2) of the connection structure between the first filter element and the second filter element of the present utility model.

[0037] Figure 15 This is the schematic diagram (5) of the filtering structure of the present utility model.

[0038] Figure 16 This is the bottom view schematic diagram of the filtering structure of the present utility model in the open state.

[0039] Figure 17 This is the schematic diagram (1) of the floor drain structure of the present utility model.

[0040] Figure 18 This is the first use state diagram of the floor drain of the present utility model.

[0041] Figure 19 This is the second structural schematic diagram of the floor drain of the present utility model.

[0042] Figure 20 This is the top view structural schematic diagram of the floor drain of the present utility model.

[0043] Figure 21 This is the second use state diagram of the floor drain of the present utility model.

[0044] Figure 22 This is the structural schematic diagram of the water draining basket of the present utility model.

[0045] Figure 23 This is the exploded structural schematic diagram of the water draining basket of the present utility model.

[0046] Figure 24 This is the structural schematic diagram of the ladle of the present utility model.

[0047] Figure 25 This is the structural schematic diagram when part of the water draining basket of the present utility model is omitted.

[0048] Description of main component symbols: 1. Fixed collar; 11. Handle; 12. Horizontal stop platform; 2. First filter element; 21. First connecting part; 22. First comb teeth; 23. Opening and closing dial; 24. First pinching part; 25. First mating surface; 26. First support step; 3. Second filter element; 31. Second connecting part; 32. Second comb teeth; 33. Second pinching part; 34. Second mating surface; 35. Second support step; 4. Filter cavity; 41. Filter through holes; 5. Rotating shaft; 6. Torsion spring; 7. Magnet; 8. Liquid holding basin; 9. Hand-held handle; 91. First adjusting rotating rod; 92. Second adjusting rotating rod; 93. Dial rod. Detailed implementation manners

[0049] The following further describes the present utility model in conjunction with the accompanying drawings and specific implementation manners.

[0050] Embodiment 1

[0051] As Figure 1-11As shown in the figure, the utility model discloses a filtering structure, which includes a fixed collar 1, a first filter element 2 and a second filter element 3. The fixed collar 1 is horizontally sleeved outside the first filter element 2 and the second filter element 3 in a circular ring shape. At least one of the first filter element 2 and the second filter element 3 is rotatably connected to the fixed collar 1. In this embodiment, the first filter element 2 is directly rotatably connected to the fixed collar 1, or indirectly rotatably connected to the fixed collar 1 through the second filter element 3, and the second filter element 3 is rotatably connected or fixedly connected to the fixed collar 1.

[0052] There are two connection states, namely, fitting and opening, between the first filter element 2 and the second filter element 3. By the relative rotation between the first filter element 2 and the second filter element 3, or by the rotation of the first filter element 2 and the second filter element 3 relative to the fixed collar 1, the fitting state and the opening state can be switched.

[0053] In the fitting state, the first filter element 2 and the second filter element 3 approach and fit with each other under the influence of their own weights. After fitting, the first filter element 2 and the second filter element 3 as a whole are in the shapes of a cylinder, a bowl, a basin, etc., and a filtering cavity 4 with an open top is formed by enclosing between the first filter element 2 and the second filter element 3. The bottom and / or side of the filtering cavity 4 is provided with a plurality of filtering through holes 41. That is to say, in the fitting state, the first filter element 2 and the second filter element 3 cooperate to have a filtering function, allowing fluids to pass through and intercepting solid substances.

[0054] In the opening state, the joint between the first filter element 2 and the second filter element 3 is separated from each other, and an opening is formed between the bottoms of the first filter element 2 and the second filter element 3. The position of the opening corresponds to the position of the bottom of the filtering cavity bottom 4 in the fitting state. In the opening state, the intercepted solid substances can directly fall through the bottom opening, achieving the purpose of quickly removing the solid substances. During the removal process, the hand is not easily in contact with the intercepted solid substances, and it is convenient to rinse after the solid substances are removed.

[0055] Preferably, when the second filter element 3 is fixedly connected to the fixed collar 1, the second filter element 3 is integrally formed on the fixed collar 1 to reduce structural dead corners and seams, avoid dirt accumulation, and facilitate cleaning.

[0056] When both the first filter element 2 and the second filter element 3 are rotatably arranged, two first connection parts 21 are oppositely arranged on the upper part of the first filter element 2, and two second connection parts 31 are oppositely arranged on the upper part of the second filter element 3. The positions of the first connection parts 21 and the second connection parts 31 are arranged in one-to-one correspondence. The first filter element 2 and the second filter element 3 are respectively rotatably connected to the fixed collar 1 along the same direction through the first connection parts 21 and the second connection parts 31. That is to say, the rotation axis of the second filter element 3 is parallel or even coincides with the rotation axis of the first filter element 2.

[0057] The above-mentioned filter through hole 41 can be completely opened on the first filter element 2 and the second filter element 3, or can be formed by splicing the first filter element 2 and the second filter element 3. As one of the cases, the bottom of the first filter element 2 extends to form a plurality of first comb teeth 22 facing the second filter element 3, and the first comb teeth 22 are arranged at intervals. The second filter element 3 is correspondingly provided with grooves or other structures, so that the second filter element 3 in the spliced ​​state can avoid the first comb teeth 22 on the first filter element 2. At the same time, in the spliced ​​state, the side walls of the first comb teeth 22 and the side walls of the second filter element 3 can enclose at least one of the above-mentioned filter through holes 41.

[0058] This type of filter hole 41 formed by the first comb teeth 22 and the second filter element 3 can play a filtering role when the first filter element 2 and the second filter element 3 are assembled, and in the open state, the retention effect on solid matter is greatly reduced, so that the solid matter originally retained in the filter cavity 4 can be directly dropped and taken out, and is not easy to get stuck in the pores. Even if the retained solid matter is slender and entangled with each other, it can be directly combed out, which is convenient for cleaning.

[0059] Preferably, the bottom of the second filter element 3 extends to form a plurality of second comb teeth 32 facing the first filter element 2, and the second comb teeth 32 are arranged in parallel and at intervals. The structure of the second comb teeth 32 is similar to that of the first comb teeth 22, and the two are arranged in an interlaced manner. In the assembled state, the first comb teeth 22 and the second comb teeth 32 are interlaced with each other, and at least one filtering through hole 41 is formed by the side wall of the first comb teeth 22 and the side wall of the second comb teeth 32. The filtering through hole 31 formed by the encirclement is small, which is convenient for filtering small-sized solids.

[0060] In order to conveniently control the opening and closing of the first filter element 2 and the second filter element 3 to switch between the spliced ​​state and the open state, the top of the first filter element 2 extends upward to form an opening and closing paddle 23, which is located on the side of the first connecting portion 21. By turning the opening and closing paddle 23, the first filter element 2 can be rotated to adjust the opening and closing degree, and the adjustment can be operated with one hand.

[0061] In addition to setting the opening and closing paddle 23, a first kneading portion 24 may also be formed by extending upward from the top of the first filter element 2, and a second kneading portion 33 may be formed by extending upward from the top of the second filter element 3. The first kneading portion 24 is located between two first connecting portions 21, and the second kneading portion 33 is located between two second connecting portions 31, and the position corresponds to that of the first kneading portion 24. By pinching the first kneading portion 24 and the second kneading portion 33 to make them approach each other, the first filter element 2 and the second filter element 3 can be driven to rotate relative to each other or relative to the fixed collar 1, and then switched to the open state. On the contrary, by pushing the first kneading portion 24 and the second kneading portion 33 away from each other, the first filter element 2 and the second filter element 3 can be rotated to fit together with each other and switched to the fitting state. In addition to switching the state, the first kneading portion 24, the second kneading portion 33 and the above-mentioned opening and closing paddle 23 can also serve as a handle to facilitate the taking and placing of the filter structure. However, for the convenience of taking and placing, it is preferably to form a handle 11 by extending upward from the top of the fixed collar 1.

[0062] The first filter element 2 and the fixed collar 1 are rotatably connected through a rotating shaft 5, that is, the above-mentioned first connecting portion 21 and the fixed collar 1 are rotatably connected through the rotating shaft 5. When the second filter element 3 is rotatably arranged, the above-mentioned second connecting portion 31 and the fixed collar 1 are also rotatably connected through the rotating shaft 5. The rotating shaft 5 can be independently arranged for easy disassembly, or can be integrally formed with the first connecting portion 21 or the second connecting portion 31. The first connecting portion 21 and the second connecting portion 31 can be installed through different rotating shafts 5, or as Figure 12-13 shown, coaxially arranged through the same rotating shaft 5.

[0063] Furthermore, as Figure 14 shown, a torsion spring 6 is horizontally sleeved outside the rotating shaft 5. The two ends of the torsion spring 6 respectively abut against the first connecting portion 21 and the second connecting portion 31. Under the action of the torsion spring 6, the horizontal fitting state of the first filter element 2 and the second filter element 3 can be maintained until an external force separates them. When the first filter element 2 or the second filter element 3 is manually rotated to switch it to the open state, the torsion spring 6 can store energy to provide power for the automatic reset of the first filter element 2 and the second filter element 3, and turn the first filter element 2 and the second filter element 3 back to the fitting state after the external force is removed.

[0064] In addition to adding the torsion spring 6, the fitting state of the first filter element 2 and the second filter element 3 can also be better maintained by magnetic attraction. As Figure 15-16 shown, the first filter element 2 has a first fitting surface 25, the second filter element 3 has a second fitting surface 34, and magnets 7 are embedded on both the first fitting surface 25 and the second fitting surface 34. In the fitting state, the first fitting surface 25 and the second fitting surface 34 are closely attached to each other, and the magnets 7 on the first fitting surface 25 and the magnets 7 on the second fitting surface 34 can attract each other to maintain the fitting state.

[0065] For convenient erection, the upper part of the first filter element 2 extends outward to form a first support step 26, and the upper part of the second filter element 3 extends outward to form a second support step 35. Both the first support step 26 and the second support step 35 are semi-circular, and their bottom end faces are usually flush. The above-mentioned first connecting portion 21 is correspondingly arranged at both ends of the first support step 26, and the second connecting portion 31 is correspondingly arranged near both ends of the second support step 35. Correspondingly, several horizontal stop platforms 12 extend inward on the inner side surface of the fixed collar 1. The horizontal stop platforms 12 are arranged at the same height and are evenly distributed along the circumferential direction of the fixed collar 1.

[0066] In the assembled state, the first filter element 2 and the second filter element 3 can be stably erected on the horizontal stop platforms 12 through the first support step 26 and the second support step 35. In addition to the supporting function, the provided horizontal stop platforms 12 can also play a stopping role. In addition, by changing the shapes of the first connecting portion 21 and the second connecting portion 31, changing the position of the opening and closing flap 23, etc., the rotation angles and stops of the first filter element 2 and the second filter element 3 can also be correspondingly set.

[0067] Embodiment Two

[0068] Based on the above Embodiment One, the present utility model also discloses a sink filter, including the above-mentioned filtering structure. When used in a sink, the sink filter can be directly snapped in and horizontally erected at the sink drain opening through the fixed collar 1, so as to intercept solid substances such as food residues and fruit and vegetable peels.

[0069] Embodiment Three

[0070] Based on the above Embodiment One, as Figure 17-21 shown, the present utility model also discloses a floor drain, including the above-mentioned filtering structure. Since there are usually more hairs and fibrous substances on the ground, first comb teeth 22 and second comb teeth 32 are preferably provided on the first filter element 2 and the second filter element 3 of the floor drain, and substantially all the filtering through holes 41 are formed by the side walls of the first comb teeth 22 and the side walls of the second comb teeth 32, which is convenient for removing the intercepted slender solid substances. The overall floor drain can be flat to be erected above the drain pipe, or can be cylindrical to be partially inserted into the drain pipe and used in combination with a floor drain cover.

[0071] Embodiment Four

[0072] Based on the above Embodiment One, as Figure 22-23As shown, the utility model also discloses a drain basket, including the above-mentioned filtering structure and a liquid holding basin 8. The fixing ring 1 is detachably clamped on the upper edge of the liquid holding basin 8, and then the first filter element 2 and the second filter element 3 are mounted in the liquid holding basin 8. The liquid holding basin 8 can receive clean water for washing and intercept sewage flowing through the filtering through hole 41. A certain distance is left between the inner wall of the liquid holding basin 8 and the outer wall of the first filter element 2 and the outer wall of the second filter element 3, so that the first filter element 2 and the second filter element 3 can be slightly rotated to open and close.

[0073] Similar to the floor drain structure, the filter hole 41 in the drain basket is basically formed by the side walls of the first comb teeth 22 and the second comb teeth 32. When the first filter element 2 and the second filter element 3 are completely assembled, there is basically no gap between the two, which is convenient for soaking and cleaning. When the first filter element 2 and the second filter element 3 are partially assembled, the filter hole 41 can be formed to filter out sewage.

[0074] Embodiment 5

[0075] Based on the above embodiment 1, Figure 24-25 As shown, the utility model also discloses a colander, comprising the above-mentioned filtering structure and a hand-held handle 9. One end of the hand-held handle 9 is fixedly connected to the fixed collar 1. When the first filter element 2 and the second filter element 3 are both rotatable and non-coaxially rotatable, the hand-held handle 9 is rotatably provided with a first adjusting rotating rod 91 and / or a second adjusting rotating rod 92; when the first filter element 2 and the second filter element 3 are both rotatable and coaxially rotatable, the hand-held handle 9 is rotatably provided with a first adjusting rotating rod 91 or a second adjusting rotating rod 92; when the second filter element 3 is fixedly connected to the fixed collar 1, the hand-held handle 9 is rotatably provided with a first adjusting rotating rod 91.

[0076] One end of the first adjusting rotating rod 91 is fixedly connected to the first filter element 2 and is coaxially rotatable with the first filter element 2; one end of the second adjusting rotating rod 92 is fixedly connected to the second filter element 3 and is coaxially rotatable with the second filter element 3. By rotating the first adjusting rotating rod 91 and the second adjusting rotating rod 92, the first filter element 2 and the second filter element 3 can be rotated accordingly and their opening and closing can be controlled to switch states. When controlling the opening and closing, the hand does not need to be turned over, nor does it need to be close to the first filter element 2 and the second filter element 3, which is convenient to operate. On this basis, a lever 93 is also provided on the hand handle 9. The length of the lever 93 is much shorter than that of the first adjusting rotating rod 91 and the second adjusting rotating rod 92, and it is vertically fixed in the middle of the first adjusting rotating rod 91 and the second adjusting rotating rod 92. By turning the lever 93, the first adjusting rotating rod 91 and the second adjusting rotating rod 92 can be rotated accordingly, thereby improving the convenience of opening and closing control.

[0077] Although the present utility model has been specifically shown and described in connection with preferred embodiments, those skilled in the art should understand that various changes in form and details may be made to the present utility model without departing from the spirit and scope of the present utility model as defined by the appended claims, and all such changes are within the protection scope of the present utility model.

Claims

1. A filtering structure, characterized in that: It includes a fixed collar, a first filter element and a second filter element. The fixed collar is sleeved outside the first filter element and the second filter element, and at least one of the first filter element and the second filter element is rotatably connected to the fixed collar; the first filter element and the second filter element switch between a combined state and an open state through relative rotation or rotation relative to the fixed collar; In the combined state, the first filter element and the second filter element are mutually combined, a filter cavity with an open top is formed by surrounding between the first filter element and the second filter element, and the bottom and / or side of the filter cavity are provided with a plurality of filter through holes; In the open state, the joint of the first filter element and the second filter element is separated from each other and an opening is formed at the bottom.

2. The filtering structure according to claim 1, wherein: A number of first comb teeth facing the second filter element extend from the bottom of the first filter element, and the first comb teeth are arranged at intervals; a number of second comb teeth facing the first filter element extend from the bottom of the second filter element, and the second comb teeth are arranged at intervals; in the combined state, the first comb teeth and the second comb teeth are arranged in an interlaced manner, and at least one filter through hole is formed by surrounding the side walls of the first comb teeth and the second comb teeth.

3. The filtering structure according to claim 1, characterized in that: Two first connection parts are oppositely arranged on the upper part of the first filter element, and two second connection parts are oppositely arranged on the upper part of the second filter element, and the positions of the first connection parts and the second connection parts correspond to each other one by one; The first filter element and the second filter element are respectively rotatably connected to the fixed collar along the same direction through the first connection part and the second connection part; or, one of the first filter element and the second filter element is integrally formed on the fixed collar.

4. The filtering structure according to claim 3, characterized in that: An opening and closing flap extends upward from the top of the first filter element, and the opening and closing flap is located on the side of the first connection part; Or, a first pinching part extends upward from the top of the first filter element, a second pinching part extends upward from the top of the second filter element, and the positions of the first pinching part and the second pinching part correspond to each other.

5. A filtering structure according to claim 1, characterized in that: A number of horizontal stop platforms extend inward on the inner side surface of the fixed collar, the horizontal stop platforms are arranged at the same height and are evenly distributed along the circumferential direction of the fixed collar; a first support step extends outward from the upper part of the first filter element, and a second support step extends outward from the upper part of the second filter element; In the combined state, the first support step and the second support step are respectively erected on the horizontal stop platforms.

6. The filtering structure according to claim 1, wherein: The first filter element and the fixed collar are rotatably connected through a rotating shaft, a torsion spring is sleeved outside the rotating shaft, and the torsion spring respectively abuts against the first filter element and the second filter element to maintain the combined state of the first filter element and the second filter element; Or, the first filter element has a first joint surface, the second filter element has a second joint surface, and magnets are embedded on both the first joint surface and the second joint surface; in the combined state, the first joint surface and the second joint surface are mutually pressed tightly, and the magnets on the first joint surface and the magnets on the second joint surface are mutually attracted.

7. A sink filter, characterized in that: It includes the filter structure according to any one of claims 1-6.

8. A floor drain, characterized in that: Comprising the filtering structure according to any one of claims 1-6.

9. A draining basket, characterized in that: Comprising the filtering structure according to any one of claims 1-6 and a liquid holding basin, wherein the fixed collar is clamped on the upper edge of the liquid holding basin, and the first filtering member and the second filtering member are mounted in the liquid holding basin through the fixed collar.

10. A strainer, characterized in that: Comprising the filtering structure according to any one of claims 1-6 and a hand-held handle, one end of the hand-held handle is fixedly connected to the fixed collar, and a first adjusting lever and / or a second adjusting lever are rotatably arranged on the hand-held handle; One end of the first adjusting lever is fixedly connected to the first filtering member and is rotatably arranged coaxially with the first filtering member; one end of the second adjusting lever is fixedly connected to the second filtering member and is rotatably arranged coaxially with the second filtering member.

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