Ultrathin titanium fiber sintered felt with aperture gradient structure

Abstract

The utility model belongs to the technical field of titanium fiber sintered felts, and particularly relates to an ultrathin aperture gradient structure titanium fiber sintered felt which comprises a titanium fiber sintered felt main body, and the titanium fiber sintered felt main body is formed by sintering and fixing an upper titanium fiber filter layer and a lower titanium fiber filter layer; first filtering holes are uniformly formed in the upper titanium fiber filtering layer, and second filtering holes are uniformly formed in the lower titanium fiber filtering layer; the first filtering holes comprise necking filtering holes with large upper parts and small lower parts and straight filtering holes communicated with the bottom ends of the necking filtering holes, the second filtering holes comprise upper straight holes and lower straight holes communicated with the bottom ends of the upper straight holes, and the diameter of the lower straight holes is smaller than that of the upper straight holes; the titanium fiber sintered felt body is of a double-layer filtering structure formed by sintering and fixing the upper titanium fiber filtering layer and the lower titanium fiber filtering layer, the structure is light and thin, the filtering effect is improved while the strength is improved, a gradient hole structure is formed through the first filtering holes and the second filtering holes, and the pollutant containing amount and the filtering efficiency are effectively improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of titanium fiber sintered felt, and in particular relates to an ultra-thin titanium fiber sintered felt with a gradient aperture structure. Background Art

[0002] Sintered felt is a kind of filter material. Metal fiber sintered felt is made of metal fibers with a diameter of micron level through non-woven laying, stacking and high-temperature sintering. Multi-layer metal fiber felt forms a pore gradient by layers of different pore sizes, which can be controlled to obtain extremely high filtration accuracy and a larger dirt holding capacity than a single-layer felt. It can continuously maintain the filtering effect of the filter cloth and has the characteristics of three-dimensional mesh, porous structure, high porosity, large surface area, large pore size, and uniform distribution.

[0003] In the prior art, a Chinese utility model patent with authorization announcement number CN212974452U discloses "a titanium fiber sintered felt", including a titanium fiber sintered body, wherein the top and bottom surfaces of the titanium fiber sintered body are both provided with a support layer, the bottom of the support layer is provided with a titanium fiber filter screen, the bottom of the titanium fiber filter screen is provided with a titanium fiber filter layer, the bottom of the titanium fiber filter layer is provided with a separation layer, the titanium fiber sintered body is formed by sintering and fixing the support layer, the titanium fiber filter screen, the titanium fiber filter layer, and the separation layer, and the entire equipment is made of titanium fiber material. The sintered felt formed of titanium fiber material is made of titanium fiber material as a whole, which increases the flexibility of the sintered felt, improves its strength, reduces the weight of the sintered felt, and can be adjusted during use.

[0004] Although the titanium fiber sintered felt in the prior art has high strength and flexibility, in actual use, its strength is improved on the basis of increasing the overall thickness of the titanium fiber sintered body. Therefore, when filtering the medium, the friction between the medium and the titanium fiber sintered body will also increase, and the filtering effect will be reduced.

[0005] In order to solve the above problems, the present application proposes an ultra-thin titanium fiber sintered felt with a gradient pore size structure. Utility Model Content

[0006] In order to solve the above problems existing in the prior art, the utility model provides an ultra-thin titanium fiber sintered felt with a gradient pore size structure, which has the characteristics of easy use, good filtering effect and high structural strength.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an ultra-thin titanium fiber sintered felt with a gradient pore size structure, comprising a titanium fiber sintered felt body, wherein the titanium fiber sintered felt body is composed of an upper titanium fiber filter layer and a lower titanium fiber filter layer which are sintered and fixed;

[0008] The upper titanium fiber filter layer is evenly provided with first filter holes, the lower titanium fiber filter layer is evenly provided with second filter holes, and the diameter of the first filter holes is smaller than the diameter of the second filter holes;

[0009] The first filter hole includes a shrinkage filter hole that is larger at the top and smaller at the bottom and a straight filter hole connected to the bottom end of the shrinkage filter hole. The second filter hole includes an upper straight hole and a lower straight hole connected to the bottom end of the upper straight hole, and the diameter of the lower straight hole is smaller than the diameter of the upper straight hole.

[0010] Preferably, the thickness of the upper titanium fiber filter layer and the lower titanium fiber filter layer are equal, both of which are 0.2mm-0.4mm.

[0011] Preferably, the top diameter of the narrowed filter hole is 50 μm-100 μm, the bottom diameter is 30 μm-50 μm, and the diameter of the straight filter hole is 30 μm-50 μm.

[0012] Preferably, the diameter of the upper straight hole is 50 μm-100 μm, and the diameter of the lower straight hole is 10 μm-30 μm.

[0013] Preferably, an upper convex ring is fixed on the bottom surface of the upper titanium fiber filter layer at a position corresponding to the straight filter hole, and a lower convex ring is fixed on the top surface of the lower titanium fiber filter layer at a position corresponding to the upper straight hole, and the upper convex ring is embedded in the lower convex ring.

[0014] Preferably, the inner diameter of the upper convex ring is equal to the diameter of the straight filter hole, and the outer diameter is equal to the top diameter of the shrink filter hole, and the inner diameter of the lower convex ring is equal to the outer diameter of the upper convex ring.

[0015] Preferably, a support mesh is further included, and the support mesh is sintered and fixed between the upper titanium fiber filter layer and the lower titanium fiber filter layer.

[0016] Preferably, the support mesh is a mesh structure formed by interlacing and weaving titanium fiber wefts and titanium fiber warps, and the mesh diameter of the support mesh is equal to the outer diameter of the lower convex ring.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] In the utility model, the main body of the titanium fiber sintered felt is a double-layer filtering structure composed of an upper titanium fiber filter layer and a lower titanium fiber filter layer that are sintered and fixed. The structure is light and thin, which improves the strength while also improving the filtering effect. A gradient pore structure is formed by the first filter hole and the second filter hole, which effectively improves the dirt holding capacity and filtering efficiency.

[0019] Other additional advantages and beneficial effects of the present application will be given in part in the following description, and in part will become apparent from the following description, or will be understood through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0021] Figure 1 It is a structural schematic diagram of the utility model;

[0022] Figure 2 This is a schematic diagram of the cross-sectional structure of the main body of the titanium fiber sintered felt in the utility model;

[0023] Figure 3 For this utility model Figure 2 A is an enlarged structural diagram;

[0024] Figure 4 It is a schematic diagram of the axonometric structure of the support net in the utility model.

[0025] In the figure: 1, titanium fiber sintered felt body; 11, upper titanium fiber filter layer; 111, first filter hole; 1111, shrink filter hole; 1112, straight filter hole; 112, upper convex ring; 12, lower titanium fiber filter layer; 121, second filter hole; 1211, upper straight hole; 1212, lower straight hole; 122, lower convex ring; 13, support mesh; 131, titanium fiber weft; 132, titanium fiber warp. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figure 1-Figure 4 The utility model provides the following technical solutions: an ultra-thin titanium fiber sintered felt with a gradient aperture structure, comprising a titanium fiber sintered felt body 1, wherein the titanium fiber sintered felt body 1 is composed of an upper titanium fiber filter layer 11 and a lower titanium fiber filter layer 12 which are sintered and fixed;

[0028] Further, by Figure 1 , Figure 2 and Figure 3As shown, in this embodiment, a first filter hole 111 is evenly provided on the upper titanium fiber filter layer 11, and a second filter hole 121 is evenly provided on the lower titanium fiber filter layer 12, and the diameter of the first filter hole 111 is smaller than the diameter of the second filter hole 121. Therefore, the upper titanium fiber filter layer 11 and the lower titanium fiber filter layer 12 form a titanium fiber sintered felt body 1 with a double-layer filtering structure, which has a light and thin structure, improves the strength while also improving the filtering effect, and forms a gradient pore structure through the first filter hole 111 and the second filter hole 121, which effectively improves the dirt holding capacity and filtering efficiency;

[0029] Preferably, by Figure 1 , Figure 2 and Figure 3 As shown, in this embodiment, the first filter hole 111 includes a tapered filter hole 1111 that is larger at the top and smaller at the bottom, and a straight filter hole 1112 that is connected to the bottom end of the tapered filter hole 1111, and the second filter hole 121 includes an upper straight hole 1211 and a lower straight hole 1212 that is connected to the bottom end of the upper straight hole 1211, and the diameter of the lower straight hole 1212 is smaller than the diameter of the upper straight hole 1211. Therefore, the tapered filter hole 1111 and the straight filter hole 1112 form a first-level gradient hole structure, and the upper straight hole 1211 and the lower straight hole 1212 form a second-level gradient hole structure, which effectively improves the dirt holding capacity and filtration efficiency.

[0030] Optionally, by Figure 1 , Figure 2 and Figure 3 As shown, in this embodiment, the thickness of the upper titanium fiber filter layer 11 and the lower titanium fiber filter layer 12 are equal, both of which are 0.2mm-0.4mm. The materials and specifications of the upper titanium fiber filter layer 11 and the lower titanium fiber filter layer 12 are consistent. The only difference is the difference between the first filter hole 111 and the second filter hole 121. The upper titanium fiber filter layer 11 and the lower titanium fiber filter layer 12 constitute a titanium fiber sintered felt body 1 with a double-layer filtering structure.

[0031] Optionally, by Figure 1 , Figure 2 and Figure 3 As shown, in this embodiment, the top diameter of the tapered filter hole 1111 is 50μm-100μm, the bottom diameter is 30μm-50μm, and the diameter of the straight filter hole 1112 is 30μm-50μm, that is, the diameter of the straight filter hole 1112 is equal to the bottom diameter of the tapered filter hole 1111, and the medium passes through the tapered filter hole 1111 and the straight filter hole 1112 in turn for filtration.

[0032] Optionally, by Figure 1 , Figure 2 and Figure 3As shown, in this embodiment, the diameter of the upper straight hole 1211 is 50μm-100μm, and the diameter of the lower straight hole 1212 is 10μm-30μm, that is, the diameter of the upper straight hole 1211 is equal to the top diameter of the shrinkage filter hole 1111, and the diameter of the lower straight hole 1212 is smaller than the diameter of the straight filter hole 1112. The medium passes through the upper straight hole 1211 and the lower straight hole 1212 in turn for filtration, forming a gradient filtration, which effectively improves the dirt holding capacity and filtration efficiency.

[0033] Preferably, by Figure 1 , Figure 2 and Figure 3 As shown, in the present embodiment, an upper convex ring 112 is fixed on the bottom surface of the upper titanium fiber filter layer 11 at a position corresponding to the straight filter hole 1112, and a lower convex ring 122 is fixed on the top surface of the lower titanium fiber filter layer 12 at a position corresponding to the upper straight hole 1211, and the upper convex ring 112 is embedded in the lower convex ring 122. After the upper titanium fiber filter layer 11 and the lower titanium fiber filter layer 12 are sintered, the upper convex ring 112 is embedded in the lower convex ring 122, which effectively improves the sintering stability of the upper titanium fiber filter layer 11 and the lower titanium fiber filter layer 12, and improves the strength of the titanium fiber sintered felt body 1.

[0034] Preferably, by Figure 1 , Figure 2 and Figure 3 As shown, in this embodiment, the inner diameter of the upper raised ring 112 is equal to the diameter of the straight filter hole 1112, and the outer diameter is equal to the top diameter of the shrinkage filter hole 1111, and the inner diameter of the lower raised ring 122 is equal to the outer diameter of the upper raised ring 112. After the upper raised ring 112 is embedded in the lower raised ring 122, the outer wall of the upper raised ring 112 fits tightly against the inner wall of the lower raised ring 122, which effectively improves the sintering stability of the upper titanium fiber filter layer 11 and the lower titanium fiber filter layer 12.

[0035] Preferably, by Figure 1 and Figure 4 As shown, in this embodiment, a support mesh 13 is also included, and the support mesh 13 is sintered and fixed between the upper titanium fiber filter layer 11 and the lower titanium fiber filter layer 12. By sintering the support mesh 13 between the upper titanium fiber filter layer 11 and the lower titanium fiber filter layer 12, the strength of the titanium fiber sintered felt body 1 is further improved.

[0036] Optionally, by Figure 1 and Figure 4As shown, in the present embodiment, the support net 13 is a mesh structure formed by interlacing and weaving titanium fiber weft threads 131 and titanium fiber warp threads 132, and the mesh diameter of the support net 13 is equal to the outer diameter of the lower convex ring 122. After the upper titanium fiber filter layer 11, the support net 13 and the lower titanium fiber filter layer 12 are sintered, the lower convex ring 122 will penetrate the mesh of the support net 13 and fit closely with the support net 13, thereby further improving the sintering stability of the upper titanium fiber filter layer 11, the support net 13 and the lower titanium fiber filter layer 12, and improving the strength of the titanium fiber sintered felt body 1.

[0037] Components not described in detail herein are prior art.

[0038] Working principle and use process of the utility model: the titanium fiber sintered felt of the utility model, the upper titanium fiber filter layer 11 and the lower titanium fiber filter layer 12 form a titanium fiber sintered felt body 1 with a double-layer filtering structure, the structure is light and thin, and the filtering effect is improved while the strength is improved. The gradient hole structure is formed by the first filter hole 111 and the second filter hole 121. The medium passes through the shrink filter hole 1111, the straight filter hole 1112, the upper straight hole 1211 and the lower straight hole 1212 in turn for filtering, forming a gradient filtration, which effectively improves the dirt holding capacity and filtering efficiency;

[0039] In addition, by sintering the support mesh 13 between the upper titanium fiber filter layer 11 and the lower titanium fiber filter layer 12, the strength of the titanium fiber sintered felt body 1 is further improved;

[0040] After the upper titanium fiber filter layer 11, the support net 13 and the lower titanium fiber filter layer 12 are sintered, the upper convex ring 112 is embedded in the lower convex ring 122, and the outer wall of the upper convex ring 112 is tightly fitted to the inner wall of the lower convex ring 122. At the same time, the lower convex ring 122 will pass through the mesh of the support net 13 and fit closely with the support net 13, thereby further improving the sintering stability of the upper titanium fiber filter layer 11, the support net 13 and the lower titanium fiber filter layer 12, and improving the strength of the titanium fiber sintered felt body 1.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An ultra-thin titanium fiber sintered felt with a gradient pore size structure, comprising a titanium fiber sintered felt body (1), characterized in that: The titanium fiber sintered felt body (1) is composed of an upper titanium fiber filter layer (11) and a lower titanium fiber filter layer (12) which are sintered and fixed; The upper titanium fiber filter layer (11) is evenly provided with first filter holes (111), the lower titanium fiber filter layer (12) is evenly provided with second filter holes (121), and the diameter of the first filter holes (111) is smaller than the diameter of the second filter holes (121); The first filter hole (111) comprises a narrow filter hole (1111) which is larger at the top and smaller at the bottom, and a straight filter hole (1112) which is in communication with the bottom end of the narrow filter hole (1111); the second filter hole (121) comprises an upper straight hole (1211) and a lower straight hole (1212) which is in communication with the bottom end of the upper straight hole (1211); and the diameter of the lower straight hole (1212) is smaller than the diameter of the upper straight hole (1211).

2. The ultra-thin titanium fiber sintered felt with gradient pore size structure according to claim 1, characterized in that: The thickness of the upper titanium fiber filter layer (11) and the lower titanium fiber filter layer (12) are equal, both of which are 0.2 mm-0.4 mm.

3. The ultra-thin titanium fiber sintered felt with gradient pore size according to claim 1, characterized in that: The top diameter of the narrowed filter hole (1111) is 50 μm-100 μm, the bottom diameter is 30 μm-50 μm, and the diameter of the straight filter hole (1112) is 30 μm-50 μm.

4. The ultra-thin titanium fiber sintered felt with gradient pore size structure according to claim 1, characterized in that: The diameter of the upper straight hole (1211) is 50 μm-100 μm, and the diameter of the lower straight hole (1212) is 10 μm-30 μm.

5. The ultra-thin titanium fiber sintered felt with gradient pore size structure according to claim 1, characterized in that: An upper convex ring (112) is fixed on the bottom surface of the upper titanium fiber filter layer (11) at a position corresponding to the straight filter hole (1112), and a lower convex ring (122) is fixed on the top surface of the lower titanium fiber filter layer (12) at a position corresponding to the upper straight hole (1211), and the upper convex ring (112) is embedded in the lower convex ring (122).

6. The ultra-thin titanium fiber sintered felt with gradient pore size structure according to claim 5, characterized in that: The inner diameter of the upper convex ring (112) is equal to the diameter of the straight filter hole (1112), and the outer diameter is equal to the top diameter of the shrink filter hole (1111), and the inner diameter of the lower convex ring (122) is equal to the outer diameter of the upper convex ring (112).

7. The ultra-thin titanium fiber sintered felt with gradient pore size structure according to claim 6, characterized in that: It also comprises a support net (13), and the support net (13) is sintered and fixed between the upper titanium fiber filter layer (11) and the lower titanium fiber filter layer (12).

8. The ultra-thin titanium fiber sintered felt with gradient pore size structure according to claim 7, characterized in that: The support net (13) is a mesh structure formed by interlacing and weaving titanium fiber wefts (131) and titanium fiber warps (132), and the mesh diameter of the support net (13) is equal to the outer diameter of the lower convex ring (122).

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