Filter element framework and filter element

Abstract

The utility model relates to the technical field of filtering equipment, in particular to a filter element framework and a filter element, which comprise a frame body in a spiral structure, the section of the frame body is in an S-shaped structure, and the section of the frame body comprises a first fixing part, a first bending part, a second fixing part, a second bending part and a third fixing part which are connected in sequence, and the first fixing part, the second fixing part and the third fixing part are arranged in parallel. According to the utility model, the spiral frame body and the spiral filter membrane jointly form the tube body of the tubular filter element, so that the load can be uniformly distributed, the stress concentration degree of the structure is reduced, and the structural strength and the bearing capacity of the formed tubular filter element are effectively improved; besides, as the tube wall of the tubular filter element is composed of the filter membrane and the frame body simultaneously, compared with a built-in support body, the thickness of the tube wall in the radial direction of the tube body of the tubular filter element is effectively reduced, the consumption ratio of the support body is effectively reduced, and the production cost is further reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of filtering equipment, in particular to a filter element frame and a filter element. Background Art

[0002] In the process of industrial production, in order to avoid environmental pollution, filtering equipment is required to filter and treat industrial waste gas or industrial waste water, and tubular filter element is one of the important components in commonly used industrial filtering equipment. The tubular filter element generally includes an outer filter membrane and an inner support body, and the support body provides structural support for the filter membrane so that the filter membrane has a certain rigidity to meet the requirements of the use environment; however, in the process of realizing the present invention, the applicant found that the production cost of the tubular filter element in the prior art is high, which is not conducive to market competition and promotion and application. Utility Model Content

[0003] The purpose of this application is to provide a filter element frame and a filter element to solve the above technical problems existing in the prior art, mainly including the following two aspects:

[0004] The first aspect of the present application provides a filter element skeleton, including a frame body with a spiral structure, the cross-section of the frame body is an S-shaped structure, the cross-section of the frame body includes a first fixing portion, a first bending portion, a second fixing portion, a second bending portion and a third fixing portion connected in sequence, the first fixing portion, the second fixing portion and the third fixing portion are arranged in parallel, a first preset gap is provided between the first fixing portion and the second fixing portion, the first fixing portion and the second fixing portion cooperate to achieve clamping and fixing of one side of the filter membrane, a second preset gap is provided between the second fixing portion and the third fixing portion, the second fixing portion and the third fixing portion cooperate to achieve clamping and fixing of the other side of the filter membrane.

[0005] Further, a projection of the first fixing portion on the second fixing portion is located inside the second fixing portion.

[0006] Furthermore, a projection of the third fixing portion on the second fixing portion is located inside the second fixing portion.

[0007] Furthermore, at least one first avoidance groove is provided inside the first curved portion.

[0008] Furthermore, at least one second avoidance groove is provided inside the second curved portion.

[0009] Furthermore, the first fixing portion, the second fixing portion and the third fixing portion have the same thickness.

[0010] The second aspect of the present application provides a filter element, including a filter membrane with a spiral structure and the above-mentioned filter element frame, the filter membrane and the filter element frame constitute a tubular structure, one side of the filter membrane is connected between the first fixing part and the second fixing part, and the other side of the filter membrane is connected between the second fixing part and the third fixing part.

[0011] Furthermore, there is a third preset gap between the filter membrane and the inner wall of the first curved portion;

[0012] And / or, there is a fourth preset gap between the filter membrane and the inner wall of the second curved portion.

[0013] Furthermore, the first fixing portion is located outside the tubular structure, and the first fixing portion is welded to the filter membrane at a side close to the filter membrane.

[0014] Furthermore, the first bent portion is welded to an adjacent filter membrane.

[0015] Compared with the prior art, the utility model has at least the following technical effects:

[0016] The utility model comprises a spiral frame and a spiral filter membrane to form a tube body of a tubular filter element, which can evenly distribute the load, thereby reducing the stress concentration of the structure, and further can effectively improve the structural strength and bearing capacity of the formed tubular filter element; in addition, since the tube wall of the tubular filter element is composed of the filter membrane and the frame at the same time, compared with an internal support body, the tube wall thickness in the radial direction of the tube body of the tubular filter element is effectively reduced, and the proportion of the support body is effectively reduced, thereby reducing the production cost, and at the same time, the shielding area of ​​the filter membrane by the frame is reduced, so that the effective utilization area of ​​the filter membrane is effectively improved compared with the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments of the present invention or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a structural schematic diagram of the tubular filter element of the utility model;

[0019] Figure 2 It is a schematic diagram of the exploded structure of the tubular filter element of the utility model;

[0020] Figure 3 It is a schematic diagram of the structure of the filter membrane and filter element skeleton of the utility model during the molding process;

[0021] Figure 4 yes Figure 3 Partial cross-sectional view along AA axis;

[0022] Figure 5 It is a schematic diagram of welding of the filter membrane and the filter element skeleton of the utility model;

[0023] Figure 6It is a schematic diagram of the elastic deformation of the filter membrane and filter element skeleton after forming of the utility model;

[0024] In the figure,

[0025] 10. frame; 110. first fixing portion; 120. first bending portion; 130. second fixing portion; 140. second bending portion; 150. third fixing portion; 20. filter membrane; 30. welding point. DETAILED DESCRIPTION

[0026] The following description provides many different embodiments or examples for implementing different features of the present invention. The components and arrangements described in the following specific examples are only used to simplify the present invention and are only used as examples, not to limit the present invention.

[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the invention claimed for protection, but merely represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0028] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. In addition, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0029] In the present invention, unless otherwise clearly specified and limited, a first feature being above or below a second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, a first feature being above, above, and above a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being below, below, and below a second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0030] In addition, in the present invention, "proximal end" and "distal end" refer to the far and near positions of the structure relative to human operation in the use environment, so as to facilitate the description of the positional relationship between components and facilitate understanding; for the same component, "proximal end" and "distal end" are the relative positional relationship of the component, not absolute; therefore, it should be understood from the perspective of realizing the principles of the present invention, and should not deviate from the essence of the present invention.

[0031] In the process of industrial production, in order to avoid environmental pollution, filtering equipment is required to filter industrial waste gas or industrial waste water, and the tubular filter element is one of the important components of the commonly used industrial filtering equipment. The tubular filter element generally includes an outer filter membrane and an inner support body, and the support body provides structural support for the filter membrane, so that the filter membrane has a certain rigidity to meet the requirements of the use environment; for the existing tubular filter element in the prior art, such as a spiral support skeleton for a dust collector bag disclosed in Chinese Patent Publication No. CN216703686U, a support skeleton is provided in the dust collector bag, and the structural strength and working area of ​​the dust collector bag are increased at the same time, so that the dust collector bag maintains a tubular shape during the working process to meet the requirements of the use environment; however, due to the limitation of the existing support body structure (the support body in the prior art generally adopts an annular skeleton and a plurality of support rods, the annular skeleton provides radial support, and the support rod provides axial support), the proportion of the production raw material usage of the support body in the product is high, no matter how the product structure size changes, the proportion of the production raw material usage of the annular skeleton and the support rod is almost unchanged, resulting in high production costs of the product, which is not conducive to market competition and promotion and application. To this end, the present application provides a filter element skeleton and a filter element that can reduce the proportion of raw materials used in the support body in the product, as shown in the following embodiments.

[0032] Embodiment 1:

[0033] The present application embodiment provides a filter element skeleton, such as Figure 2 As shown, it includes a frame 10 with a spiral structure, and the cross section of the frame 10 is an S-shaped structure, such as Figures 4 to 6As shown, the cross-section of the frame 10 includes a first fixing portion 110, a first bending portion 120, a second fixing portion 130, a second bending portion 140 and a third fixing portion 150 connected in sequence, the first fixing portion 110, the second fixing portion 130 and the third fixing portion 150 are arranged in parallel, a first preset gap is provided between the first fixing portion 110 and the second fixing portion 130, the first fixing portion 110 and the second fixing portion 130 cooperate to achieve clamping and fixing of one side of the filter membrane 20, a second preset gap is provided between the second fixing portion 130 and the third fixing portion 150, the second fixing portion 130 and the third fixing portion 150 cooperate to achieve clamping and fixing of the other side of the filter membrane 20.

[0034] For tubular filter elements, the use requirements are different in different environments. When the filter element skeleton in the present application is used to prepare a filter element, the filter membrane 20 and the filter element skeleton can be spirally wound, such as Figure 1 to Figure 3 As shown, the spiral frame 10 and the spiral filter membrane 20 together form the tube body of the tubular filter element. In the cross section of the tube body of the tubular filter element, as shown in FIG. Figure 4 As shown, one side of the filter membrane 20 is connected between the first fixing portion 110 and the second fixing portion 130. Specifically, the first fixing portion 110 and the second fixing portion 130 can cooperate to clamp and fix one side of the filter membrane 20, or the first fixing portion 110 can be welded to the corresponding filter membrane 20 on the same side. Figure 5 and Figure 6 As shown, the welding point 30 is located at the first fixing portion 110 close to the corresponding same-side filter membrane 20; the other side of the filter membrane 20 is connected between the second fixing portion 130 and the third fixing portion 150. Specifically, the second fixing portion 130 and the third fixing portion 150 can cooperate to clamp and fix the other side of the filter membrane 20, or the second fixing portion 130 can be welded to the same-side filter membrane 20, such as Figure 5 and Figure 6 As shown, the weld 30 is formed on the side of the second fixing portion 130 close to the corresponding filter membrane 20 on the same side; the spiral structure is a structure with rotational symmetry, and its mechanical properties can evenly distribute the load due to its rotational symmetry, thereby reducing the stress concentration of the structure, and thus effectively improving the structural strength and bearing capacity of the formed tubular filter element, so that the formed tubular filter element has excellent structural strength and bearing capacity, and meets the pressure difference tolerance requirements during the filtration process;

[0035] In addition, since the tube wall of the tubular filter element is composed of the filter membrane 20 and the frame 10 at the same time, compared with the internal support body, the tube wall thickness in the radial direction of the tubular filter element is effectively reduced, and the proportion of the support body is effectively reduced, thereby reducing the production cost. At the same time, the shielding area of ​​the filter membrane 20 by the frame 10 is reduced, so that the effective utilization area of ​​the filter membrane 20 is effectively improved compared with the prior art;

[0036] On the other hand, since the filter skeleton adopts the cooperation of the first fixing part 110 and the second fixing part 130, and the cooperation of the second fixing part 130 and the third fixing part 150 to clamp and fix the two sides of the filter membrane 20, the connection between the first fixing part 110, the second fixing part 130 and the filter membrane 20, and the connection between the second fixing part 130, the third fixing part 150 and the filter membrane 20 are all surface connections, and the connection surface is also a spiral structure, thereby further avoiding stress concentration at the connection between the filter membrane 20 and the filter skeleton, and improving the structural stability and upper limit of the structural strength of the tubular filter element after molding.

[0037] Specifically, the projection of the first fixing portion 110 on the second fixing portion 130 is located inside the second fixing portion 130 , so that in the formed tubular filter element, the first fixing portion 110 and the second fixing portion 130 correspond to each other in the radial direction of the tube body and provide structural support to each other.

[0038] Specifically, the projection of the third fixing portion 150 on the second fixing portion 130 is located inside the second fixing portion 130 , so that in the formed tubular filter element, the second fixing portion 130 and the third fixing portion 150 correspond to each other in the radial direction of the tube body and provide structural support to each other.

[0039] In some embodiments, when making a tubular filter element, in order to achieve a smooth transition on the inner side of the first bend 120 after molding, at least one first avoidance groove can be provided on the inner side of the first bend 120; based on this structure, at the first bend 120 after molding, the first avoidance groove can absorb the bending deformation on the inner side of the first bend 120, reduce the molding resistance of the first bend 120, avoid wrinkles on the inner side of the first bend 120 due to deformation, and ensure a smooth transition on the inner side of the first bend 120 after molding.

[0040] In some embodiments, when making a tubular filter element, in order to achieve a smooth transition on the inner side of the second bend 140 after molding, at least one second avoidance groove is provided on the inner side of the second bend 140; based on this structure, at the second bend 140 after molding, the second avoidance groove can absorb the bending deformation on the inner side of the second bend 140, reduce the molding resistance of the second bend 140, avoid wrinkles on the inner side of the second bend 140 due to deformation, and ensure a smooth transition on the inner side of the second bend 140 after molding.

[0041] In some embodiments, the first avoidance groove may not be set in the first bend 120 and / or the second avoidance groove may not be set in the second bend 140. Correspondingly, deformation wrinkles are generated on the inner sides of the first bend 120 and the second bend 140 during the forming process, and the deformation wrinkles are used as reinforcement ribs to improve the structural strength of the skeleton after forming.

[0042] Specifically, the first fixing portion 110 , the first bending portion 120 , the second fixing portion 130 , the second bending portion 140 and the third fixing portion 150 are integrated, and the first fixing portion 110 , the second fixing portion 130 and the third fixing portion 150 have the same thickness.

[0043] Example 2

[0044] The present application embodiment provides a filter element, such as Figure 1 to Figure 3 As shown, it includes a filter membrane 20 with a spiral structure and the filter element skeleton in Example 1, the filter membrane 20 and the filter element skeleton form a tubular structure, one side of the filter membrane 20 is connected between the first fixing part 110 and the second fixing part 130, and the other side of the filter membrane 20 is connected between the second fixing part 130 and the third fixing part 150.

[0045] In the process of manufacturing the filter element, the filter membrane 20 and the filter element skeleton frame 10 can be spirally wound, and the spiral frame 10 and the spiral filter membrane 20 together form a tube body of the tubular filter element. Figures 4 to 6 As shown, one side of the filter membrane 20 is connected between the first fixing part 110 and the second fixing part 130, and the first fixing part 110 and the second fixing part 130 cooperate to pre-fix one side of the filter membrane 20, and then the first fixing part 110 is welded to the corresponding filter membrane 20 on the same side; the other side of the filter membrane 20 is connected between the second fixing part 130 and the third fixing part 150, and the second fixing part 130 and the third fixing part 150 cooperate to pre-fix the other side of the filter membrane 20, and then the second fixing part 130 or the first bending part 120 is welded to the filter membrane 20 on the same side; the spiral structure is a structure with rotational symmetry, and its mechanical properties can evenly distribute the load due to its rotational symmetry, thereby reducing the stress concentration of the structure, and then It can effectively improve the structural strength and load-bearing capacity of the formed tubular filter element, so that the formed tubular filter element has excellent structural strength and load-bearing capacity, and meets the pressure difference tolerance requirements during the filtration process; in addition, the first curved portion 120 has a certain bending deformation ability in the axial and radial directions of the tube body, and accordingly, it also gives the formed tube body a certain elasticity in both the axial and radial directions, so that the functionality of the tubular filter element is further improved. For example, the tubular filter element is applied to industrial air filtration, and the tubular filter element with elastic function can cooperate with the pulse spray component, so that the tube body can vibrate to a certain amplitude under the action of the pulse spray component, so as to promote the filtered impurities to fall off the filter membrane 20, so that the tubular filter element can achieve continuous filtration.

[0046] In order to realize the elastic function of the tubular filter element, a third preset gap may be provided between the filter membrane 20 and the inner wall of the first curved portion 120 , so that when the tubular filter element undergoes axial or radial deformation, the third preset gap can provide adaptive movement space for the filter membrane 20 .

[0047] In order to realize the elastic function of the tubular filter element, a fourth preset gap may be provided between the filter membrane 20 and the inner wall of the second curved portion 140 , so that when the tubular filter element undergoes axial or radial deformation, the third preset gap can provide adaptive movement space for the filter membrane 20 .

[0048] In some embodiments, the first fixing portion 110 is located on the outside of the tubular structure, the first fixing portion 110 is welded to the filter membrane 20 near the side of the filter membrane 20, and the first bending portion 120 is welded to the adjacent filter membrane 20 to further enhance the connection structural strength between the filter membrane 20 and the filter skeleton.

[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A filter element skeleton, characterized in that: It includes a frame body with a spiral structure, the cross-section of the frame body is an S-shaped structure, the cross-section of the frame body includes a first fixing part, a first bending part, a second fixing part, a second bending part and a third fixing part connected in sequence, the first fixing part, the second fixing part and the third fixing part are arranged in parallel, a first preset gap is provided between the first fixing part and the second fixing part, the first fixing part and the second fixing part cooperate to achieve clamping and fixing of one side of the filter membrane, a second preset gap is provided between the second fixing part and the third fixing part, the second fixing part and the third fixing part cooperate to achieve clamping and fixing of the other side of the filter membrane.

2. The filter element skeleton according to claim 1, characterized in that: A projection of the first fixing portion on the second fixing portion is located inside the second fixing portion.

3. The filter element skeleton according to claim 2, characterized in that: A projection of the third fixing portion on the second fixing portion is located inside the second fixing portion.

4. The filter element skeleton according to claim 2, characterized in that: At least one first avoidance groove is arranged inside the first curved portion.

5. The filter element frame according to any one of claims 1 to 4, characterized in that: At least one second avoidance groove is arranged inside the second curved portion.

6. The filter element skeleton according to claim 5, characterized in that: The first fixing portion, the second fixing portion and the third fixing portion have the same thickness.

7. A filter element, characterized in that: It comprises a filter membrane with a spiral structure and a filter element frame as claimed in any one of claims 1 to 6, wherein the filter membrane and the filter element frame form a tubular structure, one side of the filter membrane is connected between a first fixing part and a second fixing part, and the other side of the filter membrane is connected between the second fixing part and a third fixing part.

8. The filter element according to claim 7, characterized in that: There is a third preset gap between the filter membrane and the inner wall of the first curved portion; And / or, there is a fourth preset gap between the filter membrane and the inner wall of the second curved portion.

9. The filter element according to claim 7, characterized in that: The first fixing portion is located outside the tubular structure, and the first fixing portion is welded to the filter membrane near one side of the filter membrane.

10. The filter element according to claim 9, characterized in that: The first bent portion is welded to the adjacent filter membrane.

Images