Filter components

Abstract

The present invention discloses a filter assembly, comprising: a first material for filtering; a second material, located on at least one side of the first material, for supporting the filter assembly and / or supporting the first material and / or filtering; a connecting structure, respectively connected to the first material and the second material and used to configure the first material and the second material on the filter assembly in a set manner; the connecting structure is respectively connected to the first material and the second material through a flexible connecting mechanism that can absorb the relative displacement between the first material and the second material. The flexible connecting mechanism of the filter assembly can absorb the relative displacement between the first material and the second material, thereby reducing the influence of the relative displacement on the stress of the first material and / or the second material. When used as a filter assembly for high-temperature flue gas dust removal, it can effectively avoid dust cracks on the first material when the thermal expansion coefficients of the first material and the second material are different.

Description

Technical Field

[0001] The invention relates to a filter component, in particular to a filter component used for gas-solid separation, especially flue gas dust removal. Background Art

[0002] like Figure 1 As shown, a filter assembly for flue gas dust removal includes a filter cartridge 1 made of a metal filter membrane, the upper end of the filter cartridge 1 is connected to an upper end joint 3, the lower end of the filter cartridge 1 is connected to a lower end joint 4, and a support cylinder 2 made of a stainless steel perforated plate is provided inside the filter cartridge 1, the upper end of the support cylinder 2 is also connected to the upper end joint 3, and the lower end of the support cylinder 2 is connected to the lower end joint 4, that is, the upper end joint 3 and the lower end joint 4 constitute a connection structure for configuring the filter cartridge 1 and the support cylinder 2 on the filter assembly in a set manner. During operation, the dust-containing flue gas flows from the outer side of the filter cartridge 1 to the inner side of the filter cartridge 1. During this process, the dust in the dust-containing flue gas is intercepted on the outer side of the filter cartridge 1, and the filtered clean gas passes through the dense through holes 5 on the support cylinder 2 and enters the inner side of the support cylinder 2, and then flows to the output port 6 on the upper end joint 3, and finally flows out from the output port 6, and the lower end joint 4 closes the lower end of the filter cartridge 1 to prevent the filtered clean gas from leaking from the lower end of the entire filter assembly.

[0003] The inventors found that when the above-mentioned filter assembly is used for high-temperature flue gas dust removal, cracks are easily generated on the surface of the filter cartridge 1. After further research, it was found that the specific reason is that since the thermal expansion coefficient of the support tube 2 is greater than that of the filter cartridge 1, the axial expansion of the support tube 2 is greater than that of the filter cartridge 1 under high-temperature conditions. At this time, axial relative displacement occurs between one end of the support tube 2 and the corresponding end of the filter cartridge 1, so that the filter cartridge 1 is subjected to a certain tensile stress, which eventually leads to cracks in the filter cartridge. Summary of the invention

[0004] In view of the above-mentioned technical problem of dust-generating cracks, the present invention provides an improved filter assembly.

[0005] The present invention provides a filter assembly, comprising: a first material, used for filtering; a second material, located on at least one side of the first material, used for supporting the filter assembly and / or supporting the first material and / or filtering; a connecting structure, respectively connected to the first material and the second material and used to configure the first material and the second material on the filter assembly in a set manner; the connecting structure is respectively connected to the first material and the second material through a flexible connecting mechanism that can absorb the relative displacement between the first material and the second material.

[0006] As a further optimization or refinement of the above technical solution, the flexible connection mechanism includes an adaptive adjustment structure, which has: a first movable part, which is composed of a first movable component connected to the first material or a part of the first material body, and is used to reflect the position of the first material in the relative displacement; a second movable part, which is composed of a second movable component connected to the second material or a part of the second material body, and is used to reflect the position of the second material in the relative displacement; the first movable part and the second movable part are movably connected in a direction corresponding to the direction of the relative displacement.

[0007] As a further optimization or refinement of the above technical solution, the first material forms a first axially extending hollow structure, the second material is located on the inner side and / or outer side of the first axially extending hollow structure and extends axially along the first axially extending hollow structure to form a second axially extending hollow structure; the front end of the connecting structure is respectively connected to the front end of the first axially extending hollow structure and the front end of the second axially extending hollow structure through a fixed connecting structure or a separate adaptive adjustment structure; the rear end of the connecting structure is respectively connected to the rear end of the first axially extending hollow structure and the rear end of the second axially extending hollow structure through a separate adaptive adjustment structure.

[0008] As a further optimization or refinement of the above technical solution, the first axially extending hollow structure is a cylindrical structure or a tubular structure, and the second axially extending hollow structure is located on the inner side of the cylindrical structure or the tubular structure and its shape is adapted to the inner wall of the cylindrical structure or the tubular structure.

[0009] As a further optimization or refinement of the above technical solution, in the same adaptive adjustment structure: the first movable component includes a first annular structure and a first plug-in structure located at one end of the first annular structure, the first annular structure is fixedly connected with the corresponding port shaft hole of the first axially extending hollow structure by cooperation, the second movable component includes a second annular structure and a second plug-in structure located at one end of the second annular structure, the second annular structure is fixedly connected with the corresponding port shaft hole of the second axially extending hollow structure by cooperation, the first plug-in structure is movably adaptively connected with the second plug-in structure along the plug-in direction, and a gap is preset between the first plug-in structure and the second plug-in structure for relative reciprocating movement of the first plug-in structure and the second plug-in structure along the plug-in direction.

[0010] As a further optimization or refinement of the above technical solution, the first plug-in structure and the second plug-in structure respectively have mutually meshing annular tooth structures.

[0011] As a further optimization or refinement of the above technical solution, the front end of the first axially extending hollow structure is the filtered material input end and the rear end is a closed end, and a closed cover plate is provided in the first annular structure of the first movable component of the adaptive adjustment structure located at the rear end of the connecting structure and / or a closed cover plate is provided in the second annular structure of the second movable component.

[0012] As a further optimization or refinement of the above technical solution, an elastic buffer structure is provided between the first movable part and the second movable part, which plays a buffering role when the first movable part and the second movable part are close to each other.

[0013] As a further optimization or refinement of the above technical solution, an anti-separation rod is connected between the first movable part and the second movable part, and the elastic buffer structure includes a spring that is sleeved on the anti-separation rod and located between the first movable part and the second movable part.

[0014] As a further optimization or refinement of the above technical solution, the first movable part and the second movable part are reciprocatingly connected in a direction corresponding to the direction of the relative displacement through mutually meshing annular tooth structures, and the first material is supported by the mutually meshing annular tooth structures on the side surfaces of the mutually meshing annular tooth structures.

[0015] As a further optimization or refinement of the above technical solution, the first movable part and the second movable part are movably connected in a direction corresponding to the direction of the relative displacement through a flexible component.

[0016] As a further optimization or refinement of the above technical solution, the first material is a metal filter membrane; and the second material is made of a metal material having a thermal expansion coefficient different from that of the metal filter membrane.

[0017] As a further optimization or refinement of the above technical solution, the metal filter membrane is welded to the outer surface of the first annular structure through an annular weld around the outer periphery of the first annular structure; and the second material is welded to the outer surface of the second annular structure.

[0018] In any of the above filter assemblies, the flexible connection mechanism can absorb the relative displacement between the first material and the second material, thereby reducing the influence of the relative displacement on the stress of the first material and / or the second material. When used as a filter assembly for high-temperature flue gas dust removal, it can effectively avoid dust cracks on the first material when the thermal expansion coefficients of the first material and the second material are different.

[0019] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments. Additional aspects and advantages of the present invention will be partially given in the following description, partially become apparent from the following description, or be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings constituting a part of the present invention are used to assist in understanding the present invention. The contents provided in the drawings and their related descriptions in the present invention can be used to explain the present invention, but do not constitute improper limitations on the present invention. In the drawings:

[0021] Figure 1 This is a schematic structural diagram (cross-sectional view) of the filter assembly described in the background technology section.

[0022] Figure 2 It is a structural schematic diagram (cross-sectional view) of an embodiment of the filter assembly of the present invention. DETAILED DESCRIPTION

[0023] The present invention is described clearly and completely below in conjunction with the accompanying drawings. A person skilled in the art will be able to implement the present invention based on these descriptions. Before describing the present invention in conjunction with the accompanying drawings, it should be particularly noted that:

[0024] The technical solutions and technical features provided in each part of the present invention, including the following description, may be combined with each other unless there is any conflict.

[0025] In addition, the embodiments of the present invention involved in the following description are generally only embodiments of a part of the present invention, rather than all embodiments. Therefore, based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0026] Regarding the terms and units in the present invention. The terms "include", "comprises", "have" and any variations thereof in the specification and claims of the present invention and related parts are intended to cover non-exclusive inclusions. Other relevant terms and units in the present invention can be reasonably interpreted based on the relevant content of the present invention.

[0027] Figure 1 This is a schematic diagram (cross-sectional view) of the structure of the filter assembly described in the background technology section. Figure 1 As shown, the basic structure of the filter assembly includes a filter cartridge 1 made of a metal filter membrane, the upper end of the filter cartridge 1 is connected to an upper end joint 3 (provided with an output port 6), and the lower end of the filter cartridge 1 is connected to a lower end joint 4. A support cylinder 2 made of a stainless steel perforated plate is provided inside the filter cartridge 1, and the upper end of the support cylinder 2 is also connected to the upper end joint 3, and the lower end of the support cylinder 2 is connected to the lower end joint 4, that is, the upper end joint 3 and the lower end joint 4 constitute a connection structure for configuring the filter cartridge 1 and the support cylinder 2 on the filter assembly in a set manner.

[0028] As described in the background technology: since the thermal expansion coefficient of the support tube 2 is greater than that of the filter cartridge 1, in a high temperature environment, the axial expansion of the support tube 2 is greater than that of the filter cartridge 1. At this time, an axial relative displacement will occur between one end of the support tube 2 and the corresponding end of the filter cartridge 1, so that the filter cartridge 1 is subjected to a certain tensile stress, and finally cracks appear in the filter cartridge. It should be noted that the thermal expansion coefficient of the filter cartridge 1 is mainly determined by the material of the filter cartridge 1. Before the application date of the present invention, the thermal expansion coefficient of the "metal filter membrane" developed by the applicant or purchased from the market is often smaller than the thermal expansion coefficient of stainless steel, which is a common material for making the support tube 2.

[0029] Figure 2 FIG. 1 is a schematic diagram (sectional view) of the structure of an embodiment of the filter assembly of the present invention. Figure 2 As shown, the filter assembly includes a first material 100, a second material 200 and a connecting structure 300, wherein the first material 100 is used for filtering, the second material 200 is located on the inner side of the first material 100 and is mainly used to support the first material 100 (and also has a supporting effect on the entire filter assembly), and the connecting structure 300 is respectively connected to the first material 100 and the second material 200 and is used to configure the first material 100 and the second material 200 on the filter assembly in a set manner, wherein the connecting structure 300 is respectively connected to the first material 100 and the second material 200 through a flexible connecting mechanism that can absorb the relative displacement between the first material and the second material.

[0030] It is foreseeable that the second material 200 may also be located outside the first material 100. The function of the second material 200 is not limited to supporting the first material 100, but may also support the filter assembly and / or filtering.

[0031] exist Figure 2 In the embodiment of the filter assembly shown, the flexible connection mechanism includes an adaptive adjustment structure 400, which includes a first movable part and a second movable part. The first movable part is composed of a first movable component 410 connected to the first material 100, and is used to reflect the position of the first material 100 during the relative displacement. The second movable part is composed of a second movable component 420 connected to the second material, and is used to reflect the position of the second material 200 during the relative displacement. The first movable part and the second movable part are movably connected in a direction corresponding to the direction of the relative displacement.

[0032] The above-mentioned “adaptive direction” refers to the direction of adaptive movement between the first movable part and the second movable part following the relative displacement, thereby reducing the influence of the relative displacement on the stress of the first material 100 and / or the second material 200 through the adaptive movement.

[0033] Typically, the first material 100 can form a first axially extending hollow structure, and the second material 200 is located on the inner side of the first axially extending hollow structure and extends axially along the first axially extending hollow structure to form a second axially extending hollow structure; at the same time, the front end of the connecting structure 300 is respectively connected to the front end of the first axially extending hollow structure and the front end of the second axially extending hollow structure through a fixed connecting structure or a separate adaptive adjustment structure 400; the rear end of the connecting structure 300 is respectively connected to the rear end of the first axially extending hollow structure and the rear end of the second axially extending hollow structure through a separate adaptive adjustment structure 400.

[0034] exist Figure 2 In the embodiment of the filter assembly shown, the first axially extending hollow structure is a cylindrical structure or a tubular structure (i.e., the cylindrical structure or the tubular structure is a subordinate concept of the first axially extending hollow structure), and the second axially extending hollow structure is located inside the cylindrical structure or the tubular structure and its shape is adapted to the inner wall of the cylindrical structure or the tubular structure. In this case, the appearance of the first axially extending hollow structure will be equivalent to or similar to Figure 1 The filter cartridge 1 in the embodiment of the present invention, and the function of the second axially extending hollow structure is also equivalent to or similar to Figure 1 The support tube 2 in the.

[0035] exist Figure 2 In the embodiment of the filter assembly shown, the front end (i.e. Figure 2 The upper end of the structure is actually connected by a fixed connection structure (the fixed connection structure can be referred to Figure 1 The middle and upper end joint 3 is connected to the filter cartridge 1 and the support cartridge 2) and is connected to the front end of the first axially extending hollow structure and the front end of the second axially extending hollow structure, and the rear end of the connecting structure 300 (i.e. Figure 2 The lower end of the hollow structure 400 is connected to the rear end of the first axially extending hollow structure and the rear end of the second axially extending hollow structure through a separate adaptive adjustment structure 400.

[0036] exist Figure 2 In the embodiment of the filter assembly shown, in the adaptive adjustment structure at the rear end of the connecting structure 300: the first movable component 410 includes a first annular structure 411 and a first plug-in structure 412 located at one end of the first annular structure 411, the first annular structure 411 is fixedly connected with the corresponding port shaft hole of the first axially extending hollow structure by cooperation, the second movable component 420 includes a second annular structure 421 and a second plug-in structure 422 located at one end of the second annular structure 421, the second annular structure 421 is fixedly connected with the corresponding port shaft hole of the second axially extending hollow structure by cooperation, the first plug-in structure 412 is movably and adaptively connected with the second plug-in structure 422 along the plug-in direction, and a gap 430 is preset between the first plug-in structure and the second plug-in structure for relative reciprocating movement of the first plug-in structure and the second plug-in structure along the plug-in direction.

[0037] Preferably, Figure 2 As shown, the first plug structure 412 and the second plug structure 422 respectively have mutually meshing annular tooth structures. In this way, the first plug structure 412 and the second plug structure 422 can be guided by the mutually meshing annular tooth structures, and the annular support surface formed by the mutually meshing annular tooth structures can provide more comprehensive support for the side of the first material 100, that is, the first material 100 is supported by the mutually meshing annular tooth structures on the side of the mutually meshing annular tooth structures, thereby effectively preventing the first material 100 from being locally deformed. The tooth shape of the mutually meshing annular tooth structures can have a variety of different options, such as rectangle, triangle, trapezoid, etc.

[0038] In addition, Figure 2 In the embodiment of the filter assembly shown, an elastic buffer structure is further provided between the first movable part and the second movable part for buffering when the first movable part and the second movable part are close to each other. Specifically, in this embodiment, an anti-separation rod 441 is connected between the first movable part and the second movable part, and the elastic buffer structure includes a spring 442 which is sleeved on the anti-separation rod and located between the first movable part and the second movable part.

[0039] More specifically, the front end of the first axially extending hollow structure is the filtered material input end and the rear end is a closed end. A closed cover plate 401 is provided in the first annular structure 411 of the first movable part 410 of the adaptive adjustment structure 400 located at the rear end of the connecting structure 300, and a closed cover plate 401 is provided in the second annular structure 421 of the second movable part 420. The anti-separation rod 441 is respectively connected between the cover plate 401 of the first annular structure 411 and the cover plate 401 of the second annular structure 421. The spring 442 sleeved on the anti-separation rod 441 is compressed and arranged between the cover plate 401 of the first annular structure 411 and the cover plate 401 of the second annular structure 421.

[0040] In addition, Figure 2 In the embodiment of the filter assembly shown, the first material 100 is a metal filter membrane; the second material is made of a metal material with a different thermal expansion coefficient from the metal filter membrane, and more specifically, in this embodiment, the second material is made of a stainless steel perforated plate.

[0041] exist Figure 2 In the embodiment of the filter assembly shown, the metal filter membrane is welded to the outer surface of the first annular structure 411 through an annular weld around the outer circumference of the first annular structure 411 ; the second material 200 is welded to the outer surface of the second annular structure 422 .

[0042] When the filter assembly of the above-mentioned embodiment is used as a filter assembly for high-temperature flue gas dust removal, the second axially extending hollow structure will expand due to heat and push the second movable part 420 of the adaptive adjustment structure 400 at the rear end of the connecting structure 300 to move toward the first movable part 410 of the adaptive adjustment structure 400, and the spring 442 will be further compressed, thereby reducing the tensile stress borne by the first axially extending hollow structure and avoiding cracks in the first axially extending hollow structure.

[0043] In other embodiments of the filter assembly of the present invention, the flexible connecting mechanism can be a flexible component with a simpler structure, such as a connecting component made of flexible materials such as rubber, which is directly connected to one end of the first material body and one end of the second material body respectively.

[0044] The above is a description of the relevant contents of the present invention. A person skilled in the art will be able to implement the present invention based on these descriptions. Based on the above contents of the present invention, all other preferred implementations and embodiments obtained by a person skilled in the art without making creative work shall fall within the scope of protection of the present invention.

Claims

1. Filter components, including: A first material, for filtering; A second material, located on at least one side of the first material, for supporting the filter assembly and / or supporting the first material and / or filtering; A connecting structure, connected to the first material and the second material respectively and used to arrange the first material and the second material on the filter assembly in a set manner; It is characterized in that The connection structure is respectively connected to the first material and the second material through a flexible connection mechanism that can absorb the relative displacement between the first material and the second material; The flexible connection mechanism comprises an adaptive adjustment structure, which has: A first movable portion, which is composed of a first movable component connected to the first material or a part of the first material body, and is used to reflect the position of the first material in the relative displacement; A second movable portion, which is composed of a second movable component connected to the second material or a part of the second material body, and is used to reflect the position of the second material in the relative displacement; The first movable part and the second movable part are movably connected in a direction adapted to the direction of the relative displacement; The first movable part and the second movable part are movably connected in a direction adapted to the direction of the relative displacement through a flexible component; An elastic buffer structure is provided between the first movable part and the second movable part for buffering when the first movable part and the second movable part are close to each other; The first material is a metal filter membrane; the second material is made of a metal material having a thermal expansion coefficient different from that of the metal filter membrane.

2. The filter assembly according to claim 1, characterized in that: The first material forms a first axially extending hollow structure, and the second material is located inside and / or outside the first axially extending hollow structure and extends along the axial direction of the first axially extending hollow structure to form a second axially extending hollow structure; The front end of the connecting structure is respectively connected to the front end of the first axially extending hollow structure and the front end of the second axially extending hollow structure through a fixed connecting structure or a separate adaptive adjustment structure; The rear end of the connection structure is connected to the rear end of the first axially extending hollow structure and the rear end of the second axially extending hollow structure respectively through a separate adaptive adjustment structure.

3. The filter assembly according to claim 2, characterized in that: The first axially extending hollow structure is a cylindrical structure or a tubular structure, and the second axially extending hollow structure is located inside the cylindrical structure or the tubular structure and has a shape that matches the inner wall of the cylindrical structure or the tubular structure.

4. The filter assembly according to claim 2, characterized in that In the same adaptive adjustment structure: The first movable component includes a first annular structure and a first plug-in structure located at one end of the first annular structure, and the first annular structure is fixedly connected with a corresponding port shaft hole of the first axially extending hollow structure. The second movable component includes a second annular structure and a second plug-in structure located at one end of the second annular structure, and the second annular structure is fixedly connected with the corresponding port shaft hole of the second axially extending hollow structure. The first plug-in structure and the second plug-in structure are movably adapted to be connected along the plug-in direction, and a gap is preset between the first plug-in structure and the second plug-in structure for relative reciprocating movement of the first plug-in structure and the second plug-in structure along the plug-in direction.

5. The filter assembly according to claim 4, characterized in that: The first plug-in structure and the second plug-in structure respectively have annular tooth structures that mesh with each other.

6. The filter assembly according to claim 4, characterized in that: The front end of the first axially extending hollow structure is the filtered material input end and the rear end is a closed end. A closed cover plate is provided in the first annular structure of the first movable part of the adaptive adjustment structure located at the rear end of the connecting structure and / or a closed cover plate is provided in the second annular structure of the second movable part.

7. The filter assembly according to claim 1, characterized in that: An anti-separation pull rod is connected between the first movable part and the second movable part, and the elastic buffer structure includes a spring sleeved on the anti-separation pull rod and located between the first movable part and the second movable part.

8. The filter assembly according to claim 1, characterized in that: The first movable part and the second movable part are reciprocatingly plugged in a direction corresponding to the direction of the relative displacement through mutually meshing annular tooth structures, and the first material is supported by the mutually meshing annular tooth structures on the side surfaces of the mutually meshing annular tooth structures.

9. The filter assembly according to claim 1, characterized in that: The metal filter membrane is welded to the outer surface of the first annular structure through an annular weld around the outer circumference of the first annular structure; and the second material is welded to the outer surface of the second annular structure.

Images