High specific surface high film-forming tetrafluoro filler

Abstract

This disclosure relates to the technical field of fillers. One embodiment of this disclosure provides a high specific surface area and high film-forming PTFE filler, comprising: a plurality of laying frames, a connecting assembly disposed between the laying frames, a filler treatment assembly disposed in the laying frames, the filler treatment assembly including an outer wall inserted into the laying frames, an inner wall disposed within the outer wall, a plurality of outer attachment plates connected between the inner and outer walls, a plurality of outer rings fitted inside the outer attachment plates, a plurality of inner attachment plates disposed around the inner surface of the inner wall, a plurality of inner rings fitted inside the inner attachment plates, and the connecting assembly including a plurality of connecting ears disposed on both sides of the laying frames, a splicing rod inserted into the connecting ears, and a plurality of limiting rings fitted on the splicing rod. This technical solution solves the technical problems of poor performance and inconvenient laying in the prior art.

Description

Technical Field

[0001] The embodiments disclosed herein relate to the field of filler-related technology, and more specifically, to a high specific surface area, high film-forming PTFE filler. Background Technology

[0002] In fields such as chemical separation, environmental protection, and pharmaceutical purification, PTFE packing, due to its resistance to high and low temperatures, corrosion resistance, and strong chemical stability, has become a key component in tower equipment for achieving gas-liquid mass transfer and reaction catalysis. Its performance directly affects separation efficiency, reaction rate, and equipment operational stability, playing an irreplaceable role in precision chemical production.

[0003] Currently, PTFE packing materials on the market have significant drawbacks, with poor performance and inconvenient installation being prominent issues. Traditional PTFE packing materials mostly adopt simple, regular structures or particle morphologies, resulting in a small specific surface area. This leads to limited gas-liquid contact area and low mass transfer efficiency, especially in complex separation processes where purity requirements are difficult to meet. Furthermore, some packing materials have poor film-forming properties, making it difficult for liquids to form a uniform liquid film on their surface, easily leading to channeling and wall flow phenomena, further reducing mass transfer efficiency.

[0004] Furthermore, the existing PTFE packing process is cumbersome and inconvenient. Due to unreasonable structural design, problems such as bridging and uneven voids easily occur when the packing is stacked in the tower, requiring repeated manual adjustments. This not only increases installation time and labor intensity but may also lead to disordered fluid distribution within the tower due to improper placement, affecting overall operating efficiency. For large tower equipment, this drawback is even more pronounced, severely restricting production progress. Therefore, developing a PTFE packing with high specific surface area, high film-forming properties, and easy placement has become an urgent need to improve chemical separation efficiency and optimize installation processes. Utility Model Content

[0005] To overcome the above-mentioned defects, the embodiments of this disclosure provide a PTFE filler with high specific surface area and high film-forming properties, which solves the technical problems of poor performance and inconvenient laying in the prior art.

[0006] According to one aspect, at least one embodiment of this disclosure provides a high specific surface area, high film-forming PTFE filler, comprising: A plurality of laying racks, wherein connecting components are provided between the laying racks; A filler treatment assembly disposed in the laying frame; The filler treatment assembly includes an outer wall, which is inserted into the laying frame. An inner wall is provided inside the outer wall. A plurality of outer attachment plates are connected between the inner wall and the outer wall. A plurality of outer rings are fitted inside the outer attachment plates. A plurality of inner attachment plates are provided around the inner surface of the inner wall. A plurality of inner rings are fitted inside the inner attachment plates.

[0007] As a further technical solution, the connecting component includes a plurality of connecting ears, which are respectively disposed on both sides of the laying frame. A splicing rod is inserted into the connecting ear, and a plurality of limiting rings are fitted on the splicing rod.

[0008] As a further technical solution, an insert block is provided on one side of the laying frame, and a sleeve block is provided on the other side of the laying frame, the sleeve block being matched with the insert block structure.

[0009] As a further technical solution, the cross-section of the insert block has a convex shape, and the cross-section of the sleeve block has a concave shape.

[0010] As a further technical solution, both the inner attachment plate and the outer attachment plate are bent transition structures.

[0011] As a further technical solution, the laying frame is composed of several annular frame structures.

[0012] As a further technical solution, the outer wall diameter is slightly larger than the laying frame diameter.

[0013] As a further technical solution, gaps are left between several of the laying frames.

[0014] The beneficial effects of the embodiments disclosed herein are as follows: In this disclosure, the packing treatment assembly solves the problems of small specific surface area and poor film formation through a multi-layered three-dimensional design. The outer and inner walls form a double-layer cavity, and the bent structure of the outer and inner attachment plates, combined with the ring-shaped texture, significantly increases the contact area. The PTFE material enhances corrosion resistance, and the textured surface provides adhesion anchors for the film, promoting uniform film formation and avoiding channeling. This design enhances gas-liquid mass transfer efficiency, adapts to complex media environments, improves separation and reaction effects, and meets the needs of precision chemical processes. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.

[0016] Figure 1 This is a schematic diagram of a structure in one embodiment of the present disclosure; Figure 2 This is a top view of the present disclosure; Figure 3 Appendix to this disclosure Figure 1 Enlarged view of part A in the middle; In the diagram: 1. Laying frame; 2. Filler treatment assembly; 2-1. Outer wall; 2-2. Inner wall; 2-3. Outer attachment plate; 2-4. Outer ring; 2-5. Inner attachment plate; 2-6. Inner ring; 3. Connecting assembly; 3-1. Connecting lug; 3-2. Splicing rod; 3-3. Limiting ring; 3-4. Insert block; 3-5. Sleeve block. Detailed Implementation

[0017] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.

[0018] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0019] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0020] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0021] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to 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 limitations on this disclosure.

[0022] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0023] like Figures 1-3 As shown, it illustrates a high specific surface area, high film-forming PTFE filler according to an embodiment of the present disclosure, comprising: A plurality of laying frames 1, wherein connecting components 3 are provided between the laying frames 1; Filler processing assembly 2, wherein the filler processing assembly 2 is disposed in the laying frame 1; The filler treatment assembly 2 includes an outer wall 2-1, which is inserted into the laying frame 1. An inner wall 2-2 is provided inside the outer wall 2-1. A plurality of outer attachment plates 2-3 are connected between the inner wall 2-2 and the outer wall 2-1. A plurality of outer rings 2-4 are fitted inside the outer attachment plates 2-3. A plurality of inner attachment plates 2-5 are provided around the inner surface of the inner wall 2-2. A plurality of inner rings 2-6 are fitted inside the inner attachment plates 2-5.

[0024] In some examples, in order to achieve high specific surface area and efficient film formation, a filler treatment component 2 is designed. This component includes an outer wall 2-1 made of PTFE material inside the laying frame 1, which is vertically inserted into the limiting groove of the laying frame 1 through an insertion slot. The outer wall 2-1 is fixed to the laying frame 1 with PTFE bolts to prevent it from falling off during the laying process. The inner wall 2-2 is concentrically set inside the outer wall 2-1 and maintains a uniform distance from the outer wall 2-1. It is connected to the inner side of the outer wall 2-1 through circumferentially distributed connecting rods to form a stable double-layer cavity structure. The outer attachment plate 2-3 between the outer wall 2-1 and the inner wall 2-2 is evenly distributed along the circumference. One end of the plate is welded to the inner side of the outer wall 2-1, and the other end is welded to the outer side of the inner wall 2-2. The plate is arc-shaped and protrudes outward, with several strip-shaped holes on its surface. The outer ring 2-4 inside the outer attachment plate 2-3 is a ring structure made of PTFE, and is evenly fitted along the length of the outer attachment plate 2-3. The surface of the ring is provided with fine concave and convex textures, forming interlaced flow channels with the strip-shaped holes of the outer attachment plate 2-3. The inner attachment plate 2-5 around the inner surface of the inner wall 2-2 is radially distributed. One end is welded to the inner surface of the inner wall 2-2, and the other end extends towards the center of the inner wall 2-2. The surface of the plate is covered with honeycomb micropores. The inner ring 2-6 inside the inner attachment plate 2-5 is also a PTFE ring structure, and is fitted along the length of the inner attachment plate 2-5. Gaps are maintained between the rings, and the surface is connected to the micropores of the inner attachment plate 2-5.

[0025] During operation, the corrosion resistance and surface inertness of the PTFE material ensure that the packing is suitable for complex media environments. The double-layer cavity formed by the outer wall 2-1 and the inner wall 2-2 expands the space utilization rate. The arc-shaped protrusions and strip-shaped holes of the outer attachment plate 2-3 increase the contact area with the medium, and the concave and convex texture of the outer ring 2-4 further expands the specific surface area. The gap between the ring and the outer attachment plate 2-3 provides a channel for medium flow, which facilitates the adhesion of membrane components. The radial distribution and honeycomb micropores of the inner attachment plate 2-5, together with the set structure of the inner ring 2-6, make full use of the internal space of the inner wall 2-2. The gap between the micropores and the ring promotes medium permeation, so that the membrane components can be uniformly attached to the inner layer. The layered distribution of the outer attachment plate 2-3 and the inner attachment plate 2-5 forms a double-layered attachment space. The outer ring 2-4 and the inner ring 2-6 maximize the specific surface area within a limited space through a nested arrangement. The surface of the PTFE material is modified to enhance its adsorption capacity for film components, and the textured surface and microporous structure provide anchor points for film growth, promoting film stability. This component, through the combination of a multi-layered attachment structure and the properties of PTFE material, achieves high specific surface area and high film-forming properties, ensuring excellent adhesion performance.

[0026] like Figures 1-3 As shown in the figure, the connecting component 3 in this embodiment includes a plurality of connecting ears 3-1, which are respectively disposed on both sides of the laying frame 1. A splicing rod 3-2 is inserted into the connecting ear 3-1. A plurality of limiting rings 3-3 are fitted on the splicing rod 3-2. An insert block 3-4 is provided on one side of the laying frame 1, and a sleeve block 3-5 is provided on the other side of the laying frame 1. The sleeve block 3-5 is structurally matched with the insert block 3-4.

[0027] In some examples, to facilitate convenient and stable splicing of the filler, a connecting component 3 is designed. This component includes connecting ears 3-1 evenly distributed along the length of both sides of the laying frame 1, welded to the side of the laying frame 1, with through-holes inside. The splicing rod 3-2 is a long rod made of PTFE, horizontally inserted into the hole of the corresponding connecting ear 3-1 of the adjacent laying frame 1. The limiting ring 3-3 on the rod is fitted with an interference fit and located on both sides of the connecting ear 3-1 to restrict the axial movement of the connecting ear 3-1. The insert block 3-4 on one side of the laying frame 1 is a trapezoidal protrusion, which is integrally formed and fixed to the laying frame 1. The sleeve block 3-5 on the other side is a trapezoidal groove structure that matches the insert block 3-4, also integrally formed. The inclined surfaces of the insert block 3-4 and the sleeve block 3-5 fit together to form a lateral positioning. During splicing, the insert blocks 3-4 of adjacent laying frames 1 are aligned with the sleeve blocks 3-5 and inserted. The beveled surfaces guide the laying frames 1 to precisely align. Simultaneously, the round holes of the connecting ears 3-1 are aligned. After inserting the splicing rod 3-2, the limiting ring 3-3 clamps the two sides of the connecting ears 3-1 to prevent the laying frame 1 from shifting laterally or loosening longitudinally. The cooperation between the connecting ears 3-1 and the splicing rod 3-2 achieves a rigid longitudinal connection of the laying frame 1, ensuring the straightness of the laying. The limiting ring 3-3 prevents the connecting ears 3-1 from loosening through axial limiting, ensuring a stable splicing. The trapezoidal cooperation between the insert blocks 3-4 and the sleeve blocks 3-5 achieves lateral positioning, avoiding misalignment during laying. At the same time, the beveled contact disperses the pressure during laying, protecting the connection structure. The synergistic effect of multiple sets of connecting ears 3-1, insert blocks 3-4, and sleeve blocks 3-5 allows a single laying frame 1 to be quickly spliced ​​into a large-area laying unit, adapting to the size requirements of different laying scenarios. This component combines multi-directional positioning with rigid connection to achieve convenience and stability in filler laying, ensuring efficient and orderly laying process. The overall structure after splicing is stable and not easily deformed, making it convenient for filler to be laid and applied under different working conditions.

[0028] For example, such as Figure 1 As shown, the cross-section of the insert 3-4 is convex, and the cross-section of the sleeve 3-5 is concave.

[0029] In some examples, the insert 3-4 has a convex cross-section, while the sleeve 3-5 has a concave cross-section, resulting in a high degree of fit between the convex and concave structures. During splicing, the convex insert 3-4 embeds into the concave sleeve 3-5, ensuring precise positioning both horizontally and vertically, preventing relative slippage of the laying frame 1. This structure increases the contact area, distributes the stress at the splice joint, makes the connection more stable, and ensures the overall structural stability during large-area laying.

[0030] For example, such as Figure 1 As shown, both the inner attachment plate 2-5 and the outer attachment plate 2-3 have a bent transition structure.

[0031] In some examples, the inner attachment plate 2-5 and the outer attachment plate 2-3 have a bent transition structure, which increases the surface area. The three-dimensional space formed at the bend allows the medium to be retained more easily, which is beneficial for the adhesion of membrane components. At the same time, the bent structure enhances the strength of the plate, prevents deformation under the scouring of the medium, and can also guide the flow of the medium, so that the membrane components are evenly distributed on the surface of the plate, improving the film formation effect.

[0032] For example, such as Figure 1 As shown, the laying frame 1 is composed of several circular frame structures.

[0033] In some examples, the laying frame 1 consists of several annular frames, the annular structure allowing for smoother media flow. Multiple stacked rings form a three-dimensional space, increasing the opportunity for contact with the media. The annular frames are lightweight, facilitating handling and laying, and can distribute the weight of the filler, preventing damage from excessive localized stress. Simultaneously, the gaps between the rings provide channels for media flow, improving overall film formation efficiency.

[0034] For example, such as Figure 1 As shown, the diameter of the outer wall 2-1 is slightly larger than the diameter of the laying frame 1.

[0035] In some examples, the diameter of the outer wall 2-1 is slightly larger than the diameter of the laying frame 1, so that the edge of the outer wall 2-1 extends beyond the laying frame 1. In this way, the outer wall 2-1 can better wrap the internal structure, reduce the direct impact of the medium on the laying frame 1, and extend its service life. At the same time, the extended part can increase the contact area with the medium, improve the adhesion effect, and also guide the medium to flow inward, allowing the inner wall 2-2 and the inner adhesion plate 2-5 to play their full role.

[0036] For example, such as Figure 1 As shown, gaps are left between several of the laying frames 1.

[0037] In some examples, gaps are left between the laying racks 1 to facilitate the flow of the medium within the overall structure. These gaps balance the medium pressure in different areas, preventing localized congestion from affecting film formation. Simultaneously, the gaps provide ample space for membrane growth, allowing membrane components on different laying racks 1 to interact, improving overall treatment efficiency, and also facilitating subsequent maintenance and cleaning of the packing material.

[0038] In practical use: The outer wall 2-1 is inserted into the laying frame 1, ensuring a stable fit between the PTFE outer wall 2-1 and the laying frame 1. The outer attachment plate 2-3 between the outer wall 2-1 and the inner wall 2-2, along with the outer ring 2-4 of the set, the inner attachment plate 2-5 within the inner wall 2-2, and the inner ring 2-6 of the set, form a multi-layered attachment structure. During laying, adjacent laying frames 1 are connected by the U-shaped insert 3-4 and the U-shaped sleeve 3-5. After the connecting lug 3-1 is aligned, the splicing rod 3-2 is inserted, and the set limiting ring 3-3 is used for fixation, leaving a gap between the laying frames 1. When the medium flows through, the texture on the bent attachment plate and the ring surface promotes uniform film formation. The multi-layered structure expands the contact area and improves film formation efficiency, achieving convenient laying and efficient film formation throughout the process.

[0039] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.

Claims

1. A high specific surface area, high film-forming PTFE filler, characterized in that, include: A plurality of laying racks (1), wherein connecting components (3) are provided between the laying racks (1); A filler treatment assembly (2) is disposed in the laying frame (1); The filler treatment assembly (2) includes an outer wall (2-1), which is inserted into the laying frame (1). An inner wall (2-2) is provided inside the outer wall (2-1). A plurality of outer attachment plates (2-3) are connected between the inner wall (2-2) and the outer wall (2-1). A plurality of outer rings (2-4) are fitted inside the outer attachment plates (2-3). A plurality of inner attachment plates (2-5) are provided around the inner surface of the inner wall (2-2). A plurality of inner rings (2-6) are fitted inside the inner attachment plates (2-5).

2. The high specific surface area and high film-forming PTFE filler according to claim 1, characterized in that, The connecting component (3) includes several connecting ears (3-1), which are respectively arranged on both sides of the laying frame (1). A splicing rod (3-2) is inserted into the connecting ear (3-1), and several limiting rings (3-3) are fitted on the splicing rod (3-2).

3. The high specific surface area and high film-forming PTFE filler according to claim 2, characterized in that, The laying frame (1) is provided with an insert (3-4) on one side and a sleeve (3-5) on the other side, and the sleeve (3-5) is structurally matched with the insert (3-4).

4. The high specific surface area and high film-forming PTFE filler according to claim 3, characterized in that, The insert (3-4) has a convex cross-section, and the sleeve (3-5) has a concave cross-section.

5. The high specific surface area and high film-forming PTFE filler according to claim 1, characterized in that, Both the inner attachment plate (2-5) and the outer attachment plate (2-3) are bent transition structures.

6. The high specific surface area and high film-forming PTFE filler according to claim 1, characterized in that, The laying frame (1) is composed of several circular frame structures.

7. The high specific surface area and high film-forming PTFE filler according to claim 1, characterized in that, The diameter of the outer wall (2-1) is slightly larger than the diameter of the laying frame (1).

8. The high specific surface area and high film-forming PTFE filler according to claim 1, characterized in that, There are gaps between several of the laying frames (1).

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