An insulator dirt solution filtering device and a method of using the same

Abstract

This invention provides an insulator ash and contamination solution filtration device and its usage method. The filtration container includes a first filtration container with a filling groove and a second filtration container separated by an upper compartment. A magnetic fixing component, in conjunction with a magnetic filler, tightly fixes the filter paper to the inverted conical surface of the filtration container. This inverted conical shape is a three-dimensional structure with bends or curved surfaces, which increases the contact area between the filter paper and the contaminant solution. The tilt angle and structural features accelerate solution penetration and contaminant accumulation during gravity filtration and provide a uniform sealing surface for vacuum filtration. The magnetic fixing of the filter paper is suitable for both gravity filtration and assisted vacuum filtration. It limits the maximum liquid level, completely prevents contaminant solution from leaking through the gaps between the filter paper and the container, and does not alter the mass of the filter paper or leave other insoluble substances from the non-contaminant solution on the filter paper. It can quickly create an effective negative pressure without wetting the filter paper, improving filtration efficiency and measurement accuracy.

Description

Technical Field

[0001] This invention relates to the field of insulator ash density detection technology, and in particular to an insulator ash density contamination solution filtration device and its usage method, which can be adapted to both gravity natural filtration and assisted air extraction accelerated filtration scenarios, and can achieve efficient and accurate contamination solution filtration in both scenarios. Background Technology

[0002] The insulator ash density value is calculated by dividing the difference between the mass of dried filter paper containing insoluble contaminants and the mass of unused, dried filter paper by the surface area of ​​the insulator. Accurate measurement of the ash density value is crucial for the operation and maintenance of insulators. The core step in measuring the insulator ash density value is filtering out the insoluble contaminants from the contaminated solution. The filtration speed and the extent of contaminant loss during filtration directly determine the accuracy of the ash density measurement results.

[0003] In existing technologies, there are two main methods for filtering insulator ash density contaminant solutions: The first is natural filtration by gravity. The core drawback of this method is that the filtration time is too long and the efficiency is low, which cannot meet the needs of rapid on-site testing. Improper operation during the filtration of contaminant solutions can cause the contaminant solution to leak along the gaps between the filter paper and the filter container. The second method is to use an auxiliary air extraction device to accelerate filtration. Although this method can increase the filtration speed, there is a problem that the filter paper and the filter container do not fit tightly, and an effective negative pressure cannot be formed. This not only reduces the efficiency of accelerated filtration, but also causes the contaminant solution to leak along the gaps between the filter paper and the filter container. As a result, the mass of insoluble contaminants remaining after filtration is less than the actual value, ultimately leading to a lower ash density measurement result and loss of measurement reference value.

[0004] Therefore, developing a filter tool for insulator ash density and contamination solutions that can balance filtration efficiency and accuracy and is compatible with both gravity filtration and air-assisted filtration, along with its usage method, is of great practical significance for the rapid and effective measurement of insulator ash density values. Summary of the Invention

[0005] The purpose of this invention is to provide an insulator ash density and contaminant solution filtration device and its usage method, which solves the problems of low efficiency of existing gravity filtration, easy leakage of air-assisted filtration and poor negative pressure formation effect. It improves gravity filtration efficiency by relying on the design advantages of the inverted cone three-dimensional structure, and achieves sealing and leakage prevention of both filtration methods through the innovative method of magnetic fixation. At the same time, it can accelerate the filtration speed when used alone, and quickly form an effective negative pressure when used in conjunction with an auxiliary air-assisted device to avoid the loss of contaminant solution. It simplifies the operation steps and improves the accuracy of ash density measurement results.

[0006] According to one objective of the present invention, the present invention provides an insulator ash and dirt solution filtration device, comprising a filtration container, a magnetic fixing assembly, a sorting plate and filter paper; The filter container is configured in two structural forms: a first filter container with a filling groove and a second filter container with an upper compartment. The filling groove is fitted with a filling strip, and the filling strip and the upper compartment of the second filter container are filled with magnetic filler. The magnetic fixing component and the magnetic filler magnetically engage to firmly fix the filter paper to the inverted conical surface of the filter container; The insoluble contaminants on the insulators come from atmospheric pollutants, mainly salt foam, volcanic ash, coal smoke type, sulfuric acid mist type, and photochemical smog type pollutants, and do not contain metallic substances that can be magnetically attracted by magnetic fillers. The magnetic attraction fixing method is applicable to both gravity filtration and assisted air extraction filtration scenarios, intuitively defines the highest liquid level of the dirty solution, prevents the solution from leaking out from the gap between the filter paper and the container, and ensures the accuracy of ash density measurement. In this invention, the magnetic attraction fixing method will not cause damage to the filter paper or change in the quality of the filter paper itself during the entire process of use, nor will it cause a reduction in the quality of insoluble pollutants in the dirty solution that should remain on the filter paper due to the magnetic attraction of the magnetic filler. The organizing plate magnetically engages with the magnetic fixing component to house the magnetic fixing component.

[0007] Furthermore, the first filter container is a one-piece molded closed three-dimensional structure, consisting of a top plate, an outer wall of the container body, and a bottom of the container, and is approximately cylindrical in shape with a slightly thinner upper part and a slightly thicker lower part. The top plate consists of an inverted cone surface and a horizontal top surface. The inverted cone surface is divided into an upper surface and a lower surface. The lower surface of the inverted cone is provided with several through holes that communicate with the interior of the first filter container. The filling groove is circumferentially arranged on the upper surface of the inverted cone along the boundary between the upper and lower surfaces of the inverted cone and protrudes towards the outer wall of the container body. The vertical cross-section of the filling groove is a trapezoidal structure with a narrow opening and a wide bottom. A connecting port is provided on the outer wall of the device body at a position lower than the lowest point of the top plate. The connecting port is an outwardly protruding column that communicates with the interior of the first filter container. The angle between the opening direction of the column and the outer wall of the device body is less than 90°. The connecting port is a dual common passage for gravity filtration and auxiliary air extraction filtration. It serves as both the air extraction passage for the auxiliary air extraction device and the discharge passage for the waste solution after filtration in both filtration methods.

[0008] Furthermore, the second filter container is a one-piece molded closed three-dimensional structure, which is formed by a top plate, an outer wall of the container body, a container bottom and a partition lower plate. The overall shape is approximately cylindrical, slightly thinner at the top and slightly thicker at the bottom. The structure of the top plate is the same as that of the top plate of the first filter container. The lower surface of the inverted cone is provided with several through holes that communicate with the interior of the second filter container. The lower partition plate is located at the boundary between the upper and lower surfaces of the inverted cone, dividing the interior of the second filter container into an independent upper compartment and a lower compartment. The upper compartment is a closed chamber, and the lower compartment is connected to a communication port on the outer wall of the container body. The communication port is a dual common passage for gravity filtration and auxiliary air extraction filtration, serving both as the air extraction passage for the auxiliary air extraction device and as the discharge passage for the waste solution after filtration in both filtration methods.

[0009] Furthermore, the magnetic filler is a metallic substance containing one or more of iron, cobalt, and nickel, and the magnetic filler is in the form of one or more of powder, granules, and strips; The filler strip is an annular strip that matches the shape and size of the filling groove. The surface of the filler strip is made of rubber, and an adhesive fixing substance is added between the filler strip and the inner wall of the filling groove.

[0010] Furthermore, the magnetic fixing component is a fixing strip, which is a rectangular strip with a preset thickness, composed of a rubber body and several permanent magnet blocks. The rubber body is flexible, and the length of the fixing strip is greater than the circumference of the filling strip or the horizontal circumference of the upper surface of the inverted cone along the boundary. The rubber body has snap-fit ​​grooves at preset intervals that match the shape and size of the permanent magnet block. The permanent magnet block is embedded in the snap-fit ​​groove, and the exposed surface of the permanent magnet block is flush with the surface of the rubber body. The contact part between the permanent magnet block and the inner wall of the snap-fit ​​groove is fixed by an adhesive substance.

[0011] Furthermore, the permanent magnet block is a symmetrical flat structure formed by pressing permanent magnet material, which is divided into an upper permanent magnet block and a lower permanent magnet block, and the upper permanent magnet block and the lower permanent magnet block are respectively two different magnetic poles of the permanent magnet block; The exposed surfaces of two adjacent permanent magnet blocks have opposite polarities, and the adjacent permanent magnet blocks form a stable integrated structure through magnetic attraction. The magnetic attraction causes the fixing strip to form a tightly fitting fixing surface with the filter container, which effectively prevents side leakage of the solution during gravity filtration and can quickly form an effective negative pressure during assisted air suction filtration without wetting the filter paper.

[0012] Furthermore, the sorting plate is a rectangular thin plate that matches the size of the fixing strip, and is made of a metal material that can be magnetically attracted by the permanent magnet block; Both the first filter container and the second filter container are made of one of the following materials: glass, ceramic, or plastic.

[0013] Furthermore, the surface of the inverted cone is a curved surface with bends, a three-dimensional surface with multiple bends, or a three-dimensional structure combining curved and multi-bend surfaces. Relying on its own tilt angle and three-dimensional structure, it maximizes the contact area between the filter paper and the dirty solution, accelerates solution penetration during gravity filtration, and at the same time allows insoluble dirt to quickly accumulate on the filter paper on the lower surface of the inverted cone, improving filtration efficiency and facilitating dirt collection. The filter paper includes a first filter paper and a second filter paper. The first filter paper is an integrally formed filter paper that matches the shape and size of the inverted cone surface. The second filter paper is an ordinary circular filter paper that is folded to fit the surface of the inverted cone, and the folded second filter paper has no overlapping parts. The inverted cone surface has 8 or 16 curved surfaces, bends, or combinations thereof, and is centrally symmetrically distributed. The curved surfaces, bends, or combinations thereof are limited to use only in conjunction with a second filter paper.

[0014] According to another objective of the present invention, the present invention provides a method of using the above-mentioned insulator ash and dirt solution filtration device, comprising the following steps: Step 1, Filter paper pretreatment: When selecting the first filter paper, simply take the dry first filter paper for later use; when selecting the second filter paper, fold the dry second filter paper in a way that fits the surface of the inverted cone. Step 2, Filter paper laying: Lay the pretreated and dried filter paper on the surface of the inverted cone of the filter container, and make sure the filter paper completely covers all the through holes on the lower surface of the inverted cone. Step 3, Magnetic Fixing: Remove the fixing strip from the sorting plate, and place the side of the fixing strip with the exposed magnetic surface in contact with the upper surface of the inverted cone. Place the fixing strip around the circumference of the filling strip or around the upper surface of the inverted cone above the lower plate of the partition. Use the magnetic attraction between the fixing strip and the magnetic filling material to tightly adhere and fix the filter paper to the surface of the inverted cone. This magnetic fixing operation is required in both gravity filtration and assisted air extraction filtration. After fixing, the highest liquid level of the solution can be visually determined by the position of the fixing strip. Step 4, Optional connection for auxiliary air extraction: When accelerated filtration is required, connect the air extraction port of the auxiliary air extraction device to the communication port of the filter container using a conduit, and turn on the auxiliary air extraction device; skip this step if accelerated filtration is not required. Step 5, Filtration of the dirty solution: Slowly pour the ash and dirty solution of the insulator to be filtered onto the fixed filter paper. During the pouring process, keep the liquid level below the minimum height of the fixing strip. This allows the solution to quickly penetrate and filter under the action of gravity, relying on the tilt angle and three-dimensional structure of the inverted cone surface, or to filter quickly under negative pressure. Step 6, Auxiliary Disassembly: After the solution is completely filtered, if an auxiliary suction device is connected, turn off the power to the device and disconnect the connected tubing; if no auxiliary suction device is connected, skip this step. Step 7, Fixing Strip Recycling: Remove the fixing strip from the filter container, and place the side of the fixing strip with the exposed magnetic surface in contact with the organizing plate, so that the fixing strip is attracted to the organizing plate by magnetic force to complete the storage. Step 8: Waste solution discharge: Pour out the collected waste solution from the filter container through the connecting port to complete the filtration operation.

[0015] Furthermore, in step 4, the conduit is a silicone conduit; both the first and second filter papers are quantitative analysis filter papers; the opening edge of the folded second filter paper is higher than the preset height of the filling strip or the lower plate of the partition, ensuring that the solution will not leak from the edge of the filter paper; the first filter paper, because it is precisely matched with the surface of the inverted cone, can achieve seamless fit with the container without additional height limitation.

[0016] The technical solution of this invention achieves a tight fit between the filter paper and the inverted conical surface of the filter container by setting two types of filter containers with magnetic filler and magnetic fixing components. This effectively prevents the dirty solution from leaking out along the gaps and significantly improves the accuracy of insulator ash density measurement results. The magnetic fixing is an innovative fixing method, and its advantages can be seen in both gravity filtration and assisted air extraction filtration: it can intuitively define the highest liquid level of the solution to prevent overflow; it achieves a seamless fit between the filter paper and the container to avoid side leakage; throughout the entire use of the magnetic fixing method, it will not cause damage to the filter paper or changes in the quality of the filter paper itself, nor will it cause a reduction in the quality of insoluble dirt in the dirty solution that should remain on the filter paper due to the magnetic attraction of the magnetic filler. When assisting in air extraction, an effective negative pressure can be quickly formed without wetting the filter paper, shortening the filtration time and filter paper drying time, and avoiding the introduction of impurities and damage to the filter paper; The inverted cone surface has a three-dimensional structure with bends / curves, which is the core design to improve gravity filtration efficiency. By relying on the tilt angle and three-dimensional structure, it maximizes the contact area between the filter paper and the dirty solution, accelerates the gravity penetration of the solution, and allows insoluble dirt to quickly gather at the designated position on the filter paper. This improves filtration efficiency and facilitates dirt collection, solving the technical pain point of low efficiency in traditional gravity filtration. Meanwhile, the magnetic storage tray makes it easy to store and retrieve the fixed components. The two filter containers are suitable for different usage scenarios, and the connection port enables multiple uses with one hole. The overall structure is simple and easy to operate, which significantly reduces the time and economic cost of ash density detection and meets the needs of rapid on-site detection. Filter paper is divided into special one-piece molded filter paper and ordinary round folded filter paper. Special filter paper can be precisely adapted to the surface of the inverted cone without folding, while ordinary filter paper can be adapted after folding. It is compatible with both special consumables and conventional filter paper, which greatly improves the adaptability of the device and further reduces the cost of use. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of a first type of filter container according to an embodiment of the present invention; Figure 2 This is a top view of the top plate according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of a second type of filter container according to an embodiment of the present invention; Figure 4 This is a top view of the fixing strip according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the vertical cross-section of the groove on the rubber body according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the permanent magnet block in an embodiment of the present invention.

[0019] In the diagram: 101, top plate; 1011, inverted cone surface; 10111, upper surface of inverted cone; 10112, lower surface of inverted cone; 101121, through hole; 10113, filling groove; 1012, horizontal top surface; 102. Outer wall of the vessel body; 1021. Connecting opening; 103. Container bottom; 104. Lower partition plate; 105. Upper compartment; 106. Lower compartment; 2011. Rubber body; 20111. Snap-fit ​​groove; 20121. Upper layer of permanent magnet block; 20122. Lower layer of permanent magnet block; 301. Filler strip. Detailed Implementation

[0020] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they may refer to a fixed connection, a detachable connection, or an integral connection; they may refer to a mechanical connection or an electrical connection; they may refer to a direct connection or an indirect connection through an intermediate medium; and they may refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0023] Example 1 like Figures 1-6 As shown, an insulator ash and dirt solution filtration device includes a filter container assembly, a fixing strip, a sorting plate, a filler, and filter paper; the filter container assembly includes a first filter container and / or a second filter container. The first type of filter container is a one-piece molded closed three-dimensional container, consisting of a top plate 101, an outer wall 102, and a bottom 103. Its shape is approximately cylindrical, slightly thinner at the top and slightly thicker at the bottom. The top plate 101 consists of an inverted conical surface 1011 and a horizontal top surface 1012. The inverted conical surface 1011 is divided into an upper inverted conical surface 10111 and a lower inverted conical surface 10112. The lower inverted conical surface 10112 has several through holes 101121 communicating with the interior of the first type of filter container. A ring-shaped guide is provided along the boundary between the upper and lower inverted conical surfaces on the upper inverted conical surface 10111. The outer wall 102 of the device has a raised filling groove 10113, the vertical cross section of which is a trapezoid with a narrow opening and a wide bottom; a communication port 1021 is provided on the outer wall 102 of the device body at a position slightly lower than the lowest point of the top plate 101, the communication port 1021 is an outwardly protruding column that communicates with the inside of the first type of filter container, and the angle between the opening direction of the column and the outer wall 102 of the device body is less than 90°; a filling strip 301 is fitted and installed in the filling groove 10113, the filling strip 301 is an annular strip that matches the shape and size of the filling groove 10113, the surface is made of rubber material, and the inside is filled with filler; The second type of filter container is a one-piece molded closed three-dimensional container, consisting of a top plate 101, an outer wall 102, a bottom 103, and a lower partition plate 104. Its shape is approximately cylindrical, slightly thinner at the top and slightly thicker at the bottom. The structure of the top plate 101 is consistent with that of the first type of filter container, with the lower surface 10112 of the inverted cone... Similarly, several through holes 101121 communicating with the interior of the second type of filter container are distributed there; the lower partition plate 104 is located at the boundary between the upper and lower surfaces of the inverted cone, dividing the second type of filter container into an independent upper compartment 105 and a lower compartment 106. The upper compartment 105 is a closed cavity formed by the lower partition plate 104, the upper surface 10111 of the inverted cone, the horizontal top surface 1012, and the outer wall 102 of the container body, and is filled with filler material. The lower compartment 106 is a cavity formed by the lower partition plate 104, the lower surface 10112 of the inverted cone, and the outer wall 102 of the container body; a communication port 1021 communicating with the lower compartment 106 is provided on the outer wall 102 of the container body at a position slightly lower than the lowest point of the top plate 101; the structure of the communication port 1021 is the same as that of the communication port 1021 of the first type of filter container.

[0024] Specifically, in this embodiment, the filler is a metallic substance containing one or more of iron, cobalt, and nickel; The fixing strip consists of a rubber body 2011 and several permanent magnet blocks. The rubber body 2011 has snap-fit ​​grooves 20111 at certain intervals that match the size and shape of the permanent magnet blocks. The permanent magnet blocks are embedded in the snap-fit ​​grooves 20111 and their exposed surfaces are flush with the surface of the rubber body 2011. The permanent magnet blocks are symmetrical flat bodies pressed from permanent magnet material, divided into an upper layer 20121 and a lower layer 20122, with the upper and lower layers being the two poles of the permanent magnet blocks, respectively. The exposed surfaces of adjacent permanent magnet blocks have opposite polarities. The sorting plate is a rectangular thin plate that matches the size of the fixing strip and is made of a metallic material that can be attracted by a permanent magnet block; The filter paper includes a first type of filter paper that matches the shape and size of the inverted cone surface 1011, and a second type of filter paper that is folded to fit the inverted cone surface 1011.

[0025] Specifically, in this embodiment, the first filter container and the second filter container are made of one of glass, ceramic or plastic.

[0026] The inverted cone surface 1011 is a curved surface, a surface with bends, or a combination of curved surfaces and surfaces with bends. The number of curved surfaces, bends, or combinations thereof on the inverted cone surface 1011 is 8 or 16, and they are symmetrically distributed.

[0027] The filler is one or more of the following: powder, granules, or strips.

[0028] An adhesive substance is selectively added between the filler strip 301 and the inner wall of the filling groove 10113.

[0029] The contact area between the permanent magnet block and the inner wall of the snap-fit ​​groove 20111 of the rubber body 2011 is fixed by an adhesive substance.

[0030] The fixing strip is a rectangular strip with a certain thickness, and its length is slightly greater than the perimeter of the filling strip 301 or the length of the horizontal circumference of the upper surface 10111 of the inverted cone along the boundary; the rubber body 2011 is flexible.

[0031] The dimensions of the fixing strip, the number of permanent magnet blocks, the size of the permanent magnet blocks, and the spacing between adjacent permanent magnet blocks are determined based on the distribution of the filler, the specific shape of the inverted cone surface 1011, and the magnetic strength of the permanent magnet blocks.

[0032] The second type of filter paper is ordinary circular filter paper. The folded opening edge is higher than the filling strip 301 or the lower partition plate 104, and there is no overlap after folding.

[0033] The method of using the above-mentioned insulator ash and dirt solution filtering tool includes the following steps: S1. Filter paper pretreatment: If the first type of filter paper is used, take the dried first type of filter paper directly for use; if the second type of filter paper is used, fold the dried second type of filter paper in a way that fits the surface 1011 of the inverted cone. S2. Placement of filter paper: Place the pretreated and dried filter paper on the inverted cone surface 1011 of the filter container; S3. Fixing strip installation: Remove the fixing strip from the sorting plate, and place the side of the fixing strip with the exposed magnetic surface in contact with the upper surface 10111 of the inverted cone. Place it around the filling strip 301 or around the upper surface 10111 of the inverted cone above the lower plate 104 of the partition layer to fix the filter paper by magnetic attraction. S4. Connection of the air extraction device (optional): If an auxiliary air extraction device is used, connect the air extraction port of the auxiliary air extraction device to the connection port 1021 of the filter container with a conduit, and turn on the auxiliary air extraction device. S5. Filtration of dirty solution: Pour the dirty solution to be filtered onto the filter paper, keeping the liquid level below the minimum height of the fixed strip; S6. Disassembly of the air extraction device (optional): After filtration is completed, if an auxiliary air extraction device was used, turn off the power and disconnect the tubing. S7. Removing the fixing strip: Remove the fixing strip and attach the side with the exposed magnetic surface to the sorting board; S8. Waste solution discharge: Pour the filtered waste solution out from the connecting port 1021.

[0034] Specifically, when the number of curved surfaces, folds, or combinations thereof on the inverted cone surface 1011 is 8, the second method of folding the filter paper includes the following steps: F1. Lay the second type of filter paper flat, and using the horizontal axis passing through the center of the circle as the fold line, fold the semicircle below the fold line away from the table, then unfold and flatten it. F2. Using the center of the filter paper as the rotation center, rotate the filter paper 90° clockwise and repeat step F1; F3. Rotate the filter paper 45° clockwise, using the horizontal axis passing through the center of the circle as the fold line, fold the lower half of the fold line towards the table, then unfold and flatten it. F4. Rotate the filter paper 90° clockwise, repeat the folding operation in step F3, and then unfold it.

[0035] Specifically, when the number of curved surfaces, folds, or combinations thereof on the inverted cone surface 1011 is 16, the second method of folding the filter paper includes the following steps: G1. Lay the second type of filter paper flat, and using the horizontal axis passing through the center of the circle as the fold line, fold the semicircle below the fold line away from the table, then unfold and flatten it. G2. Using the center of the filter paper as the rotation center, rotate the filter paper 90° clockwise and repeat step G1. G3. Rotate the filter paper 45° clockwise, and using the horizontal axis passing through the center of the circle as the fold line, fold the lower half of the fold line towards the table, then unfold and flatten it. G4. Rotate the filter paper 90° clockwise and repeat step G3; G5. Rotate the filter paper 22.5° clockwise, and using the horizontal axis passing through the center of the circle as the fold line, fold the lower half of the fold line away from the table and then unfold and flatten it. G6. Rotate the filter paper 90° clockwise and repeat step G5. G7. Rotate the filter paper 45° clockwise, and using the horizontal axis passing through the center of the circle as the fold line, fold the lower half of the fold line towards the table, then unfold and flatten it. G8. Rotate the filter paper 90° clockwise, repeat the folding operation in step G7, and then unfold it.

[0036] Specifically, in step S4, the conduit is a silicone conduit, and the negative pressure value of the auxiliary suction device is adjusted to -0.08MPa.

[0037] The filter paper is a quantitative analysis filter paper with a pore size of 0.45 μm.

[0038] In step S3, the filter paper is tightly attached to the surface 1011 of the inverted cone by the magnetic attraction between the fixing strip and the filler, completely covering all the through holes 101121 on the lower surface 10112 of the inverted cone.

[0039] Example 2 like Figures 1-6 As shown, the present invention provides an insulator ash and dirt solution filtration device, which has two core assembly forms: the first assembly form consists of a first filter container, a filling strip, a fixing strip, a sorting plate, a filler, and filter paper; the second assembly form consists of a second filter container, a fixing strip, a sorting plate, a filler, and filter paper; the filter paper can be selected from either the first or the second type of filter paper according to requirements.

[0040] This embodiment uses a combination of the second type of filter container, fixing strip, sorting plate, filler, and the first type of filter paper, such as... Figure 2 and Figure 3 As shown, the specific structure is as follows: 1. Second type of filter container: One-piece molding, made of glass, with an approximate cylindrical shape that is slightly thinner at the top and slightly thicker at the bottom. It consists of a top plate 101, an outer wall 102, a bottom 103, and a lower partition plate 104. The top plate 101 consists of an inverted conical surface 1011 and a horizontal top surface 1012. The inverted conical surface 1011 is a symmetrical surface with eight bends, divided into an upper inverted conical surface 10111 and a lower inverted conical surface 10112. The lower inverted conical surface 10112 has several openings that communicate with the interior of the second type of filter container. Through hole 101121; the lower partition plate 104 is located at the boundary between the upper and lower surfaces of the inverted cone, dividing the second type of filter container into an upper compartment 105 and a lower compartment 106. The upper compartment 105 is a closed chamber filled with iron powder, and the lower compartment 106 is used to collect the waste solution after filtration. A connecting port 1021 is provided on the outer wall 102 of the container body at a height slightly lower than the lowest point of the top plate 101, which communicates with the lower compartment 106. The connecting port 1021 is an outwardly protruding column, and the angle between the opening direction of the column and the outer wall 102 of the container body is 60°.

[0041] 2. Fixing strip: such as Figure 4 and Figure 6 As shown, the rectangular strip, 6mm thick, consists of a rubber body 2011 and eight permanent magnet blocks. Its length is slightly greater than the horizontal circumference of the upper surface 10111 of the inverted cone along its boundary. The rubber body 2011 is flexible and has a smooth surface. Eight equally spaced locking grooves 20111 are provided on the rubber body 2011 to match the permanent magnet blocks, allowing the permanent magnet blocks to be embedded in the grooves 20111. The inner and outer exposed surfaces are flush with the surface of the rubber body 2011; the permanent magnet block is a symmetrical flat body pressed from neodymium iron boron permanent magnet material, divided into an upper permanent magnet block 20121 and a lower permanent magnet block 20122, with the upper layer being the N pole and the lower layer being the S pole; the exposed surfaces of adjacent permanent magnet blocks have opposite polarities, and the contact parts between the permanent magnet block and the inner wall of the snap-fit ​​groove 20111 are fixed with epoxy resin adhesive; the size of the fixing strip and the parameters of the permanent magnet block are determined according to the distribution of iron powder in the upper compartment 105 and the magnetism of the permanent magnet block, ensuring that the fixing strip can tightly adhere the filter paper to the inverted cone surface 1011 and stably magnetically attract it with the iron powder.

[0042] 3. Arrangement plate: rectangular thin iron plate, the size of which matches the fixing strip, the thickness is 2mm, and the surface is treated with anti-rust treatment.

[0043] 4. The first type of filter paper: a one-piece molded special filter paper that perfectly matches the shape and size of the 1011 surface of the inverted cone. The material is quantitative analysis filter paper with a pore size of 0.45μm. Because it is precisely matched with the surface of the inverted cone, it does not need to follow the structural limitation of 8 folds, so it can achieve a seamless fit with the container and there is no risk of side leakage during gravity filtration.

[0044] The usage method of this embodiment includes the following steps: S1. Filter paper pretreatment: Take the first type of dry filter paper and set it aside. No folding is required. S2. Filter paper placement: Place the dry first type of filter paper stably on the inverted cone surface 1011 of the second type of filter container, so that the filter paper completely covers all the through holes 101121 on the lower surface 10112 of the inverted cone. S3. Fixing strip installation: Remove the fixing strip from the sorting plate, and place the side of the fixing strip with the exposed magnetic surface in contact with the upper surface 10111 of the inverted cone. Slowly place it around the upper surface 10111 of the inverted cone above the lower plate 104 of the partition. Utilize the magnetic attraction between the fixing strip and the iron powder in the upper compartment 105 to firmly fix the first type of filter paper to the surface 1011 of the inverted cone. S4. Connection of the air extraction device: Using the auxiliary air extraction device, take the silicone tube and seal the air extraction port of the auxiliary air extraction device to the connection port 1021 of the second type of filter container. Turn on the auxiliary air extraction device and adjust the negative pressure value to -0.08MPa to make it work normally. S5. Filtration of dirty solution: Slowly pour the ash and dirty solution of the insulator to be filtered onto the first type of filter paper after it is fixed. During the pouring process, the liquid level of the solution should always be kept lower than the minimum height of the fixed strip. The solution passes through the filter paper quickly under negative pressure. Insoluble dirt is left on the filter paper. The filtered waste solution is collected in the lower compartment 106. S6. Disassembly of the vacuum device: After the dirty solution has been completely filtered, turn off the power of the auxiliary vacuum device to stop the vacuuming, and remove the silicone tubing. S7. Recycling the fixing strip: Gently remove the fixing strip, and place the side of the fixing strip with the exposed magnetic surface in contact with the sorting plate. Lay it flat along the length of the sorting plate so that the fixing strip is tightly attracted to the sorting plate by magnetic attraction. S8. Waste solution discharge: The filtered waste filth solution collected in the lower compartment 106 of the second type of filter container is completely poured out from the connecting port 1021 to complete the filtration operation.

[0045] Example 3 This embodiment uses a combination of a first type of filter container, a filling strip, a fixing strip, a sorting plate, a filling material, and a second type of filter paper, such as... Figure 1 As shown, the specific structure is as follows: 1. A first type of filter container: integrally molded, made of polypropylene plastic, with an approximate cylindrical shape that is slightly thinner at the top and slightly thicker at the bottom, consisting of a top plate 101, an outer wall 102, and a bottom 103; the top plate 101 consists of an inverted conical surface 1011 and a horizontal top surface 1012, the inverted conical surface 1011 being a symmetrical surface with 16 bends, divided into an upper inverted conical surface 10111 and a lower inverted conical surface 10112, the lower inverted conical surface 10112 having several features similar to the first type of filter container. The filter container has a through hole 101121 inside; the upper surface 10111 of the inverted cone has a ring of filling grooves 10113 that protrude towards the outer wall 102 of the container body at the boundary between the upper and lower surfaces of the inverted cone. The vertical cross section of the filling grooves 10113 is a trapezoid with a narrow opening and a wide bottom; a connecting port 1021 is provided on the outer wall 102 of the container body at a position slightly lower than the lowest point of the top plate 101. The connecting port 1021 is an outwardly protruding column, and the angle between the opening direction of the column and the outer wall 102 of the container body is 45°.

[0046] 2. Filler strip 301: A ring-shaped strip that perfectly matches the shape and size of the filling groove 10113. The surface is made of nitrile rubber, which is soft and elastic. The inside is filled with iron-cobalt alloy granular filler. The filler strip 301 is embedded in the filling groove 10113, and polyurethane sealant is added between the filler strip 301 and the inner wall of the filling groove 10113 to enhance the connection stability.

[0047] 3. Fixing strip: such as Figure 4 As shown, the rectangular strip, 5mm thick, consists of a rubber body 2011 and 16 permanent magnet blocks, with a length slightly larger than the circumference of the filler strip 301; the rubber body 2011 Made of silicone rubber, it has good flexibility and conformability. The rubber body 2011 has 16 snap-fit ​​grooves 20111 at equal intervals to match the permanent magnet blocks. The permanent magnet blocks are embedded in the snap-fit ​​grooves 20111 and their exposed surfaces are flush with the surface of the rubber body 2011. The permanent magnet blocks are symmetrical flat bodies pressed from ferrite permanent magnet material, divided into an upper permanent magnet block 20121 and a lower permanent magnet block 20122. The upper layer is the S pole and the lower layer is the N pole. The exposed surfaces of adjacent permanent magnet blocks have opposite polarities. The contact parts between the permanent magnet blocks and the inner wall of the snap-fit ​​grooves 20111 are fixed with acrylic adhesive. The size of the fixing strip and the parameters of the permanent magnet blocks are determined according to the distribution of iron-cobalt alloy particles in the filler strip 301 and the magnetism of the permanent magnet blocks, ensuring that the fixing strip can tightly adhere the filter paper to the inverted cone surface 1011 and stably magnetically attract it with the filler strip 301.

[0048] 4. Arrangement plate: rectangular thin iron plate, the size of which matches the fixing strip, the thickness is 1.5mm, and the surface is sprayed with anti-rust paint.

[0049] 5. The second type of filter paper: ordinary circular quantitative analysis filter paper with a diameter of 15cm and a pore size of 0.45μm. It needs to be folded according to the inverted cone surface structure with 16 folds. After folding, there is no overlapping part and the opening edge is higher than the filling strip. It is adapted to the three-dimensional structure of the inverted cone surface to maximize the use of the filtration area and improve the gravity filtration efficiency.

[0050] The usage method of this embodiment includes the following steps: S1. Filter paper pretreatment: Fold the dried second type of filter paper according to the method of adapting it to the 16-fold inverted cone surface 1011. The folding steps are as follows: G1. Lay the second type of filter paper flat on the table. Using the horizontal axis passing through the center of the circle as the fold line, fold the semicircle below the fold line away from the table and then unfold and flatten it. G2. Using the center of the filter paper as the rotation center, rotate the filter paper 90° clockwise and repeat the folding and unfolding operation of step G1. G3. Rotate the filter paper 45° clockwise, and using the horizontal axis passing through the center of the circle as the fold line, fold the lower half of the fold line towards the table, then unfold and flatten it. G4. Rotate the filter paper 90° clockwise and repeat the folding and unfolding operation of step G3. G5. Rotate the filter paper 22.5° clockwise, and using the horizontal axis passing through the center of the circle as the fold line, fold the lower half of the fold line away from the table and then unfold and flatten it. G6. Rotate the filter paper 90° clockwise and repeat the folding and unfolding operation of step G5. G7. Rotate the filter paper 45° clockwise, and using the horizontal axis passing through the center of the circle as the fold line, fold the lower half of the fold line towards the table, then unfold and flatten it. G8. Rotate the filter paper 90° clockwise, repeat the folding operation of step G7, and then unfold it. After folding, there is no overlapping part, and the opening edge is higher than the filling strip 301. S2. Filter paper placement: Place the folded and dried second type of filter paper stably on the inverted cone surface 1011 of the first type of filter container, so that the filter paper completely covers all the through holes 101121 on the lower surface 10112 of the inverted cone. S3. Fixing strip installation: Remove the fixing strip from the sorting plate, and place the side of the fixing strip with the exposed magnetic surface in contact with the upper surface 10111 of the inverted cone. Slowly place it around the filling strip 301. Utilize the magnetic attraction between the fixing strip and the iron-cobalt alloy particles in the filling strip 301 to firmly fix the second type of filter paper to the surface 1011 of the inverted cone. S4. Connecting the auxiliary air extraction device: Skip this step if you are not using an auxiliary air extraction device; S5. Filtration of dirty solution: Slowly pour the ash and dirty solution of the insulator to be filtered onto the fixed second type of filter paper. During the pouring process, always keep the liquid level below the minimum height of the fixing strip. The solution passes through the filter paper under the action of gravity. Insoluble dirt is retained on the filter paper. The filtered waste solution is collected in the lower part of the first type of filter container. S6. Disassembly of the auxiliary air extraction device: Skip this step if you are not using the auxiliary air extraction device; S7. Recycling the fixing strip: Gently remove the fixing strip, and place the side of the fixing strip with the exposed magnetic surface in contact with the sorting plate. Lay it flat along the length of the sorting plate so that the fixing strip is tightly attracted to the sorting plate by magnetic attraction. S8. Waste solution discharge: The filtered waste solution collected in the first filter container is completely poured out from the connecting port 1021 to complete the filtration operation.

[0051] In the above embodiments, parameters such as the selection of filler, the material of the permanent magnet block, the pore size of the filter paper, and the negative pressure value can be adjusted according to the actual insulator ash density detection requirements. As long as they are substantially the same as the technical solution of the present invention, they all fall within the protection scope of the present invention.

[0052] Compared with the prior art, the present invention has the following beneficial effects: 1. This invention maximizes the effective filtration area of ​​the filter paper through the structural design of the inverted cone surface of the filter container. At the same time, it allows insoluble pollutants in the dirty solution to quickly gather on the filter paper under the action of gravity, which not only speeds up the filtration speed but also facilitates the collection of insoluble pollutants. The efficiency of gravity filtration alone is much higher than that of existing technologies.

[0053] 2. Utilizing the magnetic attraction properties of magnetic materials, the filter paper is tightly adhered to the surface of the inverted cone through the magnetic attraction between the fixing strip and the filler. This visually defines the highest liquid level of the injected dirty solution, effectively preventing the dirty solution from leaking out along the gap between the filter paper and the container. This ensures that the mass of insoluble dirt after filtration is consistent with the actual value, and significantly improves the accuracy of the ash density measurement results.

[0054] 3. When used in conjunction with an auxiliary suction device, the sealed environment formed by magnetic fixation can quickly create an effective negative pressure, eliminating the need to pre-wet the filter paper, thus saving the wetting step. This not only shortens the filtration time and subsequent filter paper drying time, but also avoids the introduction of external impurities during the wetting process and the impact of filter paper damage on the measurement results.

[0055] 4. The filter paper is fixed by magnetic attraction, which will not cause the loss of the filter paper itself, nor will it leave insoluble substances that are not from the polluting solution on the filter paper. Furthermore, atmospheric pollutants do not contain metallic substances that can be attracted by permanent magnets, so there will be no reduction in mass due to the magnetic attraction of pollutants, which further ensures the accuracy of the measurement.

[0056] 5. Two types of filter containers and two types of filter paper are provided. The first type of filter paper is a special one-piece molded filter paper, and the second type of filter paper is a regular round filter paper that is folded before use. It is compatible with both special consumables and regular filter paper, which greatly improves the adaptability of the tool and reduces the cost of use.

[0057] 6. The filtering tool of this invention uses widely available and inexpensive materials, has a simple overall structure design, and is easy to use. Operators can get started without professional training. While ensuring measurement accuracy, it effectively reduces the time and economic costs of insulator ash density testing, making it suitable for large-scale on-site promotion and use.

[0058] 7. A storage board is set up to store the fixing strips. The fixing strips are laid flat and attracted to the storage board by magnetic attraction, which prevents the fixing strips from bending and the permanent magnets from falling off, thus extending the service life of the fixing strips. At the same time, it is easy to quickly retrieve them later and improves the convenience of operation.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An insulator soot contamination solution filtering device, characterized by, Includes filter container, magnetic fixing assembly, sorting plate and filter paper; The filter container is configured in two structural forms: a first filter container with a filling groove and a second filter container with an upper compartment. The filling groove is fitted with a filling strip, and the filling strip and the upper compartment of the second filter container are filled with magnetic filler. The magnetic fixing component and the magnetic filler magnetically engage to tightly fix the filter paper to the inverted conical surface of the filter container. The magnetic fixing method is applicable to both gravity filtration and assisted air extraction filtration scenarios. It can intuitively define the highest liquid level of the dirty solution injected, prevent the solution from leaking out from the gap between the filter paper and the container, and ensure the accuracy of ash density measurement. The organizing plate magnetically engages with the magnetic fixing component to house the magnetic fixing component.

2. The insulator pollution solution filtering device of claim 1, wherein, The first filter container is a one-piece molded closed three-dimensional structure, consisting of a top plate, an outer wall of the container body, and a bottom of the container. The overall shape is approximately cylindrical, slightly thinner at the top and slightly thicker at the bottom. The top plate consists of an inverted cone surface and a horizontal top surface. The inverted cone surface is divided into an upper inverted cone surface and a lower inverted cone surface. The lower inverted cone surface is provided with several through holes that communicate with the interior of the first filter container. The filling groove is circumferentially arranged on the upper inverted cone surface along the boundary between the upper and lower inverted cone surfaces and protrudes towards the outer wall of the container body. The vertical cross-section of the filling groove is a trapezoidal structure with a narrow opening and a wide bottom. A connecting port is provided on the outer wall of the device body at a position lower than the lowest point of the top plate. The connecting port is an outwardly protruding column that communicates with the interior of the first filter container. The angle between the opening direction of the column and the outer wall of the device body is less than 90°. The connecting port is a dual common passage for gravity filtration and auxiliary air extraction filtration. It serves as both the air extraction passage for the auxiliary air extraction device and the discharge passage for the waste solution after filtration in both filtration methods.

3. The insulator pollution solution filtering apparatus of claim 1, wherein, The second filter container is a one-piece molded closed three-dimensional structure, which is formed by a top plate, an outer wall of the container body, a container bottom and a partition lower plate. The overall shape is approximately cylindrical, slightly thinner at the top and slightly thicker at the bottom. The structure of the top plate is the same as that of the top plate of the first filter container. The lower surface of the inverted cone is provided with several through holes that communicate with the interior of the second filter container. The lower partition plate is located at the boundary between the upper and lower surfaces of the inverted cone, dividing the interior of the second filter container into an independent upper compartment and a lower compartment. The upper compartment is a closed chamber, and the lower compartment is connected to a communication port on the outer wall of the container body. The communication port is a dual common passage for gravity filtration and auxiliary air extraction filtration, serving both as the air extraction passage for the auxiliary air extraction device and as the discharge passage for the waste solution after filtration in both filtration methods.

4. The insulator pollution solution filtering apparatus of claim 1, wherein, The magnetic filler is a metallic substance containing one or more of iron, cobalt, and nickel, and the magnetic filler is in the form of one or more of powder, granules, and strips. The filler strip is an annular strip that matches the shape and size of the filling groove. The surface of the filler strip is made of rubber, and an adhesive fixing substance is added between the filler strip and the inner wall of the filling groove.

5. The insulator pollution solution filtering apparatus of claim 1, wherein The magnetic fixing component is a fixing strip, which is a rectangular strip with a preset thickness, composed of a rubber body and several permanent magnet blocks. The rubber body is flexible, and the length of the fixing strip is greater than the circumference of the filling strip or the horizontal circumference of the upper surface of the inverted cone along the boundary. The rubber body has snap-fit ​​grooves at preset intervals that match the shape and size of the permanent magnet block. The permanent magnet block is embedded in the snap-fit ​​groove, and the exposed surface of the permanent magnet block is flush with the surface of the rubber body. The contact part between the permanent magnet block and the inner wall of the snap-fit ​​groove is fixed by an adhesive substance.

6. The insulator dirt solution filtration apparatus of claim 5, wherein, The permanent magnet block is a symmetrical flat structure formed by pressing permanent magnet material, and is divided into an upper permanent magnet block and a lower permanent magnet block, wherein the upper permanent magnet block and the lower permanent magnet block are two different magnetic poles of the permanent magnet block; The exposed surfaces of two adjacent permanent magnet blocks have opposite polarities, and the adjacent permanent magnet blocks form a stable integrated structure through magnetic attraction. The magnetic attraction causes the fixing strip to form a tightly fitting fixing surface with the filter container, which effectively prevents side leakage of the solution during gravity filtration and can quickly form an effective negative pressure during assisted air suction filtration without wetting the filter paper.

7. The insulator pollution solution filtering apparatus of claim 1, wherein The sorting plate is a rectangular thin plate that matches the size of the fixing strip, and is made of a metal material that can be magnetically attracted by the permanent magnet block; Both the first filter container and the second filter container are made of one of the following materials: glass, ceramic, or plastic.

8. The insulator pollution solution filtering apparatus of claim 1, wherein, The surface of the inverted cone is a curved surface with bends, a three-dimensional surface with multiple bends, or a three-dimensional structure combining curved and multi-bend surfaces. By relying on its own tilt angle and three-dimensional structure, it maximizes the contact area between the filter paper and the dirty solution, accelerates solution penetration during gravity filtration, and at the same time makes insoluble dirt quickly gather on the filter paper on the lower surface of the inverted cone, improving filtration efficiency and facilitating dirt collection. The filter paper includes a first filter paper and a second filter paper. The first filter paper is an integrally formed filter paper that matches the shape and size of the inverted cone surface. The second filter paper is an ordinary circular filter paper that is folded to fit the surface of the inverted cone, and the folded second filter paper has no overlapping parts. The inverted cone surface has 8 or 16 curved surfaces, bends, or combinations thereof, and is centrally symmetrically distributed. The curved surfaces, bends, or combinations thereof are limited to use only in conjunction with a second filter paper.

9. A method of using the apparatus for filtering of the polluted solution of the insulator soot according to any of claims 1 - 8, characterized in that, Includes the following steps: Step 1, Filter paper pretreatment: When selecting the first filter paper, simply take the dry first filter paper for later use; when selecting the second filter paper, fold the dry second filter paper in a way that fits the surface of the inverted cone. Step 2, Filter paper laying: Lay the pretreated and dried filter paper on the surface of the inverted cone of the filter container, and make sure the filter paper completely covers all the through holes on the lower surface of the inverted cone. Step 3, Magnetic Fixing: Remove the fixing strip from the sorting plate, and place the side of the fixing strip with the exposed magnetic surface in contact with the upper surface of the inverted cone. Place the fixing strip around the circumference of the filling strip or around the upper surface of the inverted cone above the lower plate of the partition. Use the magnetic attraction between the fixing strip and the magnetic filling material to tightly adhere and fix the filter paper to the surface of the inverted cone. This magnetic fixing operation is required in both gravity filtration and assisted air extraction filtration. After fixing, the highest liquid level of the solution can be visually determined by the position of the fixing strip. Step 4, Optional connection for auxiliary air extraction: When accelerated filtration is required, connect the air extraction port of the auxiliary air extraction device to the communication port of the filter container using a conduit, and turn on the auxiliary air extraction device; skip this step if accelerated filtration is not required. Step 5, Filtration of the dirty solution: Slowly pour the ash and dirty solution of the insulator to be filtered onto the fixed filter paper. During the pouring process, keep the liquid level below the minimum height of the fixing strip. This allows the solution to quickly penetrate and filter under the action of gravity, relying on the tilt angle and three-dimensional structure of the inverted cone surface, or to filter quickly under negative pressure. Step 6, Auxiliary Disassembly: After the solution is completely filtered, if an auxiliary suction device is connected, turn off the power to the device and disconnect the connected tubing; if no auxiliary suction device is connected, skip this step. Step 7, Fixing Strip Recycling: Remove the fixing strip from the filter container, and place the side of the fixing strip with the exposed magnetic surface in contact with the organizing plate, so that the fixing strip is attracted to the organizing plate by magnetic force to complete the storage. Step 8: Waste solution discharge: Pour out the collected waste solution from the filter container through the connecting port to complete the filtration operation.

10. The method of using the insulator pollution solution filtering apparatus of claim 9, wherein, In step 4, the conduit is a silicone conduit; both the first and second filter papers are quantitative analysis filter papers; the opening edge of the folded second filter paper is higher than the preset height of the filling strip or the lower plate of the partition, ensuring that the solution will not leak from the edge of the filter paper; the first filter paper, because it is precisely matched with the surface of the inverted cone, can achieve seamless fit with the container without additional height limitation.

Images