Filter element structure and filter device

Abstract

The present disclosure provides a filter core structure and a filtering device, the filter core structure is arranged in the filtering device, and comprises a base, a filter screen assembly is arranged on the base, an upper cover is arranged on the top of the filter screen assembly, the filter screen assembly comprises an inner framework, a filter screen and an outer framework from inside to outside in the radial direction, first through holes are arranged on the inner framework, and the distribution density and / or the aperture of the first through holes increase from the bottom to the top of the inner framework. The embodiment of the present disclosure can improve the efficiency of forward filtration and reverse flushing, wherein, in the forward filtration, the fluid resistance is reduced to improve the overall flow capacity, and the passability of the equipment in the hydraulic system is improved, in the reverse filtration, the flow speed is improved, and stagnation in a specific scene is prevented, the coverage of the backflushing liquid jet is improved, and the flushing level of the blocked contaminants of the filter screen is improved.

Description

Technical Field

[0001] This disclosure relates to the technical field of fluid media filtration devices, and more specifically, to a filter element structure and a filtration device. Background Technology

[0002] Currently, the main functional component of a filtration station is the filter element assembly. In existing filter element assemblies, the mesh on the support frame is evenly distributed. When high-pressure liquid carrying impurities enters from the outside, it first passes through the outer frame. Under the influence of gravity, the particles at the top of the filter element assembly are relatively small, while larger particles tend to accumulate at the bottom, leading to blockages over time. Furthermore, the support frame has weak support capacity under high pressure. Summary of the Invention

[0003] In view of this, the present disclosure aims to provide a filter element structure and a filtration device to solve the technical problems in the prior art where large particles of debris easily accumulate in the lower part of the filter element assembly, causing blockage, and the support frame has weak support capacity under high pressure.

[0004] One aspect of this disclosure provides a filter element structure disposed in a filtration device, including a base, a filter screen assembly disposed on the base, and a top cover disposed on the top of the filter screen assembly. The filter screen assembly includes an inner skeleton, a filter screen, and an outer skeleton in the radial direction from the inside to the outside. A first through hole is disposed on the inner skeleton, and the distribution density and / or pore size of the first through hole increases from the bottom to the top of the inner skeleton.

[0005] In some embodiments, the inner skeleton is divided into multiple segments along its length, and the distribution density of the first through holes in each segment is the same, with the distribution density of the first through holes in the multiple segments increasing sequentially from the bottom to the top of the inner skeleton.

[0006] In some embodiments, the diameter of the first through hole in each of the segments is the same, and the diameter of the first through hole in the plurality of segments increases sequentially from the bottom to the top of the inner frame.

[0007] In some embodiments, a second through hole is provided on the outer frame, and the distribution density and / or aperture of the second through hole increases from the bottom to the top of the outer frame.

[0008] In some embodiments, the exoskeleton is divided into multiple segments along its length, each segment having the same distribution density of the second through holes, and the distribution density of the second through holes in the multiple segments increasing sequentially from the bottom to the top of the exoskeleton; and / or

[0009] The second through hole in each of the sections has the same diameter, and the diameter of the second through hole in the multiple sections increases sequentially from the bottom to the top of the outer frame.

[0010] In some embodiments, the base has a multi-lobed structure, including a main body, a plurality of lobes disposed on the outer edge of the main body, a first liquid passage hole disposed on the main body, and a second liquid passage hole evenly distributed on the lobes.

[0011] In some embodiments, the filter screen adopts a corrugated filter screen structure, which is formed by sintering and bending multiple layers of filter cloth, and the corrugations formed by the corrugated filter screen are evenly distributed along the axis of the filter screen assembly.

[0012] One aspect of this disclosure provides a filtration device comprising the filter element structure described in any of the preceding claims.

[0013] In some embodiments, the filtration device includes a valve body, a filter cartridge assembly is disposed on the valve body, the filter element structure is disposed inside the filter cartridge assembly, an end cap assembly is disposed on the top of the filter cartridge assembly, the base of the filter element structure is fixed inside the valve body, and the top cover abuts against the end cap assembly.

[0014] In some embodiments, the valve body, the filter cartridge assembly, the end cap assembly, and the filter element structure are connected by welding or adhesive bonding.

[0015] The embodiments disclosed herein can improve the efficiency of forward filtration and backwashing. In forward filtration, fluid resistance is reduced to improve overall flow capacity and improve the device's passability within the hydraulic system. In backwashing, flow velocity is increased to prevent stagnation in specific scenarios and improve the coverage of backwash fluid spray, thereby improving the flushing level of contaminants clogging the filter screen.

[0016] To make the above-mentioned objects, features and advantages of this disclosure more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0017] In drawings that are not necessarily drawn to scale, the same reference numerals may describe similar parts in different views. The same reference numerals with or without letter suffixes may indicate different instances of similar parts. The drawings generally illustrate various embodiments by way of example rather than limitation and are used, together with the description and claims, to illustrate the disclosed embodiments. Where appropriate, the same reference numerals are used in all drawings to refer to the same or similar parts. Such embodiments are illustrative and not intended to be exhaustive or exclusive embodiments of the apparatus or method. The accompanying drawings, which are provided to further understand this disclosure and form part of this application, are used to explain the illustrative embodiments of this disclosure and do not constitute an undue limitation of this disclosure. In the drawings:

[0018] Figure 1 This is a schematic diagram of the filter element structure provided in this disclosure;

[0019] Figure 2 This is a schematic diagram of the base structure in the filter element structure provided in this disclosure;

[0020] Figure 3 This is a cross-sectional view of the filter element structure provided in this disclosure;

[0021] Figure 4(a) is a schematic diagram of the structure of the filtration device provided in this disclosure and a forward filtration method;

[0022] Figure 4(b) is a schematic diagram of the structure of the filter device provided in this disclosure and its backwashing process.

[0023] The above figures include the following reference numerals:

[0024] 1-Base; 2-Filter assembly; 21-Inner frame; 22-Filter; 23-Outer frame; 24-First through hole; 25-Second through hole; 3-Top cover; 31-Main body; 32-Valve body; 33-First liquid passage hole; 4-Valve body; 5-Filter cartridge assembly; 6-End cap assembly. Detailed Implementation

[0025] The specific embodiments of this disclosure will now be described in detail with reference to the accompanying drawings, but these are not intended to limit the scope of this disclosure.

[0026] It should be understood that various modifications can be made to the embodiments disclosed herein. Therefore, the above description should not be considered as limiting, but merely as an example of embodiments. Other modifications within the scope and spirit of this disclosure will be apparent to those skilled in the art.

[0027] The accompanying drawings, which are included in and form part of this specification, illustrate embodiments of the present disclosure and, together with the general description of the disclosure given above and the detailed description of the embodiments given below, serve to explain the principles of the disclosure.

[0028] These and other features of this disclosure will become apparent from the following description of preferred forms of embodiments given as non-limiting examples, with reference to the accompanying drawings.

[0029] It should also be understood that although this disclosure has been described with reference to some specific examples, those skilled in the art can certainly implement many other equivalent forms of this disclosure, which have the features described in the claims and are therefore all within the scope of protection defined herein.

[0030] The above and other aspects, features and advantages of this disclosure will become more apparent when taken in conjunction with the accompanying drawings and in view of the following detailed description.

[0031] Specific embodiments of the present disclosure are described thereafter with reference to the accompanying drawings; however, it should be understood that the disclosed embodiments are merely examples of the present disclosure and can be implemented in various ways. Well-known and / or repeated functions and structures are not described in detail to avoid unnecessary or redundant details that could obscure the present disclosure. Therefore, the specific structural and functional details disclosed herein are not intended to be limiting, but merely to serve as the basis and representative basis for the claims to teach those skilled in the art to use the present disclosure in a variety of substantially any suitable detailed structures.

[0032] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this disclosure described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0033] This specification may use the phrases “in one embodiment,” “in another embodiment,” “in yet another embodiment,” or “in still another embodiment,” all of which may refer to one or more of the same or different embodiments according to this disclosure.

[0034] The first embodiment of this disclosure provides a filter element structure, such as... Figures 1-3 As shown, the filter element structure involved in this embodiment is set in the filtration device. The filter element structure includes a base 1, a filter screen assembly 2 is set on the base 1, a top cover 3 is set on the top of the filter screen assembly 2, and the filter screen assembly 2 is set between the base 1 and the top cover 3.

[0035] Furthermore, the base 1 has a multi-lobed structure, comprising a main body 31, with multiple lobes 32 disposed on the outer edge of the main body 31. A first liquid passage hole 33 is disposed on the main body 31, and second liquid passage holes are evenly distributed on the lobes 32. In this embodiment, the base 1 has a three-lobed structure, and correspondingly, the upper cover 3 has a three-lobed structure that mates with the base 1.

[0036] Furthermore, the filter assembly 2 here comprises a three-layer structure in the radial direction, consisting of an inner skeleton 21, a filter 22, and an outer skeleton 23 from the inside out. The inner skeleton 21 and the outer skeleton 23 serve as support structures to support the filter assembly 2, and both are cylindrical structures. The filter 22 is disposed between the inner skeleton 21 and the outer skeleton 23. The filter 22 adopts a corrugated filter structure, which is formed by bending multiple layers of filter cloth after sintering. The corrugations formed by the corrugated filter are evenly distributed along the axis of the filter assembly 2.

[0037] The filter element structure 1 of this embodiment is suitable for applications where the outer side is the liquid inlet side and the inner side is the liquid outlet side. The filter element structure 1 uses a dense, fine mesh to isolate solid particles larger than a certain size on the liquid outlet side. The inner skeleton 21 and the outer skeleton 23 provide support and protection for the filter element structure 1, while the through holes on the skeleton isolate larger particles from the outside. The inner and outer skeletons play a crucial role in the filtration performance of the filter element assembly 1; that is, the inner and outer skeletons need to ensure structural stability while also achieving a certain filtration effect.

[0038] Furthermore, a first through hole 24 is provided on the inner frame 21, and a second through hole 25 is provided on the outer frame 23. Here, the first through hole 24 and the second through hole 25 are uniformly arranged along the length direction of the inner frame 21 and the outer frame 23 on their respective outer surfaces.

[0039] The distribution density and / or aperture of the first through holes 24 on the inner frame 21 vary along the length of the inner frame 21, particularly from its bottom to its top, where the bottom refers to the position near the base 1 and the top refers to the position near the upper cover 3. In one embodiment, the distribution density of the first through holes 24 on the inner frame 21 gradually increases from the bottom to the top of the inner frame 21.

[0040] Furthermore, the inner skeleton 21 is divided into multiple segments along its length, and the distribution density of the first through holes 24 in each segment is the same, with the distribution density of the first through holes 24 in the multiple segments increasing sequentially from bottom to top.

[0041] Specifically, in this embodiment, the inner frame 21 is divided into three sections along its length: a first section A at the bottom, a second section B in the middle, and a third section C at the top. The first section is located near the bottom of the filter assembly 2, and the third section C is located near the top of the filter assembly 2.

[0042] The distribution density of the first through-hole 24 in the first section A is less than that of the second section A.

[0043] The distribution density of the first through hole 24 in section B is less than that in the third section C.

[0044] The filter device using the filter element structure 1 of this embodiment adopts an external liquid inlet and internal liquid outlet method. Specifically, the fluid medium enters from the bottom of the filter element structure 1. When the through holes on the inner skeleton 21 have the same distribution density and the same pore size, large particles of debris will first accumulate at the bottom, making the lower part more likely to clog the filter screen 22 than the upper part. According to the distribution of debris particles, the through holes on the inner skeleton 21 are arranged in a non-uniform manner with sparser holes at the bottom and denser holes at the top. This arrangement can improve the uniformity of liquid flow. At the same time, the sparse distribution of through holes at the bottom can improve the support strength of the filter element structure 1.

[0045] Similarly, adjusting the diameter of the first through hole 24 can change the flow area and achieve the same effect. Specifically, in one embodiment, the diameter of the first through hole 24 on the inner frame 21 gradually increases from the bottom to the top of the inner frame 21.

[0046] Furthermore, the inner skeleton 21 is divided into multiple segments along its length, and the diameter of the first through hole 24 in each segment is the same. The diameter of the first through hole 24 in the multiple segments increases sequentially from bottom to top. In this embodiment, the inner skeleton 21 is divided into three segments along its length: a first segment A at the bottom, a second segment B in the middle, and a third segment C at the top. The first segment is located near the bottom of the filter assembly 2, and the third segment C is located near the top of the filter assembly 2. The diameter of the first through hole 24 in the first segment A is smaller than the diameter of the first through hole 24 in the second segment B, and the diameter of the first through hole 24 in the second segment B is smaller than the diameter of the first through hole 24 in the third segment C.

[0047] The above embodiments relate to the setting of the distribution density or pore size variation of the first through holes 24 on the inner frame 21. Viewed along the length of the filter assembly 2, the distribution density and / or pore size of the second through holes 25 on the outer frame 23 can remain consistent from top to bottom. However, during backwashing of the filter device employing the filter element structure 1 of this embodiment, to improve the efficiency of backwashing, the distribution density and / or pore size of the second through holes 25 on the outer frame 23 can be based on the setting of the first through holes 24.

[0048] Specifically, for example, the distribution density and / or aperture of the second through holes 24 on the outer frame 23 gradually increase from the bottom to the top of the outer frame 23. As another example, the outer...

[0049] The skeleton 21 is divided into multiple segments along its length, and the distribution density and / or aperture of the second through holes 25 in each segment is the same. The distribution density and / or aperture of the first through holes 25 in the multiple segments increases sequentially from bottom to top. For example, the distribution density and / or aperture of the second through holes 25 in the first segment A is smaller than that in the second segment B, and the distribution density and / or aperture of the second through holes 25 in the second segment B is smaller than that in the third segment C.

[0050] The distribution density and / or aperture of the through holes on the inner skeleton 21 and the outer skeleton 23 can be selected as needed, and therefore have different combinations.

[0051] The embodiments disclosed herein can improve the efficiency of forward filtration and backwashing. In forward filtration, fluid resistance is reduced to improve overall flow capacity and improve the device's passability within the hydraulic system. In backwashing, flow velocity is increased to prevent stagnation in specific scenarios and improve the coverage of backwash fluid spray, thereby improving the flushing level of contaminants clogging the filter screen.

[0052] A second embodiment of this disclosure provides a filtration device, as shown in Figures 4(a) and 4(b), which includes a valve body 4, a filter cartridge assembly 5 disposed on the valve body 4, a filter element structure 1 as described in the above embodiment disposed within the filter cartridge assembly 5, and an end cap assembly 6 disposed on the top of the filter cartridge assembly 5. The base 1 of the filter element structure 1 is fixed within the valve body 4, and the upper cover 3 abuts against the end cap assembly 6. The valve body 4, the filter cartridge assembly 5, the end cap assembly 6, and the filter element structure 1 are connected by welding or adhesive bonding.

[0053] As shown in Figure 4(a), when performing forward filtration using the filtration device of this embodiment, the fluid medium enters from the bottom of the valve body 4 through the second liquid passage hole on the base 1 into the space between the filter cartridge assembly 5 and the filter element structure 1, and passes sequentially from the outside of the filter element structure 1 through the outer skeleton 23, the filter screen 22, and the inner skeleton 21. If the pore size of the first through hole 24 on the inner skeleton 21 is uniform, the fluid medium tends to pass more easily through the filter screen 22 at the lower part of the filter element structure 1. This may cause more contaminants to accumulate on the lower outer layer of the filter screen 22, leading to severe clogging.

[0054] However, when the distribution density and / or pore size of the first through holes 24 on the inner skeleton 21 varies, for example, using the filter element structure 1 of the above embodiment, the difference in distribution density and / or pore size of the first through holes 24 at different locations causes the fluid medium to be affected by the unevenness of the filter screen.

[0055] The flow resistance distribution allows the pollutants to pass through the filter 22 relatively evenly under the action of gravity, resulting in more uniform adhesion of pollutants to the outside of the filter 22.

[0056] As shown in Figure 4(b), when the filter device of this embodiment is used for backwashing, the fluid medium enters the filter element structure 1 from the bottom center of the valve body 4 through the first liquid passage 33 and passes through the filter screen 22 from the outside to the inside. If the distribution density and / or pore size of the second through holes 25 on the outer frame 23 are uniform, this will cause the fluid medium to tend to pass through the filter screen 22 in the upper part of the filter element structure 1, making it difficult for the pollutants accumulated in the lower part of the outer layer of the filter screen 22 to pass through the filter screen 22.

[0057] However, when the distribution density and / or pore size of the second through holes 25 on the outer frame 23 varies, for example, using the filter element structure 1 of the above embodiment, the difference in distribution density and / or pore size of the second through holes 25 at different positions makes it easier for the fluid medium to achieve backwashing due to more uniform adhesion. Furthermore, during backwashing, the bottom of the filter element structure 1 is prone to accumulation, resulting in greater pressure during backwashing. Lower distribution density and / or smaller pore size of the second through holes 25 can provide greater support strength.

[0058] The embodiments disclosed herein can improve the efficiency of forward filtration and backwashing. In forward filtration, fluid resistance is reduced to improve overall flow capacity and improve the device's passability within the hydraulic system. In backwashing, flow velocity is increased to prevent stagnation in specific scenarios and improve the coverage of backwash fluid spray, thereby improving the flushing level of contaminants clogging the filter screen.

[0059] The foregoing has provided a detailed description of several embodiments of the present disclosure. However, the present disclosure is not limited to these specific embodiments. Those skilled in the art can make various variations and modifications based on the concept of the present disclosure, and all such variations and modifications should fall within the scope of protection claimed by the present disclosure.

[0060] In the above embodiments of this disclosure, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0061] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways, rotated 90 degrees, or in other orientations, and the spatial relative descriptions used herein will be interpreted accordingly.

[0062] In addition to the above, it should be noted that the terms "one embodiment," "another embodiment," and "embodiment" used in this specification refer to specific features, structures, or characteristics described in connection with that embodiment, which are included in at least one embodiment described in the general description of this application. The appearance of the same expression in multiple places in the specification does not necessarily refer to the same embodiment. Furthermore, when a specific feature, structure, or characteristic is described in connection with any embodiment, the intention is to suggest that implementing such a feature, structure, or characteristic in conjunction with other embodiments also falls within the scope of this disclosure.

[0063] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0064] The above description is merely a preferred embodiment of this disclosure and is not intended to limit this disclosure. Various modifications and variations can be made to this disclosure by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A filter element structure disposed in a filtration device, characterized in that, The device includes a base, on which a filter assembly is disposed, and on the top of the filter assembly is a top cover. The filter assembly includes an inner skeleton, a filter, and an outer skeleton in the radial direction from the inside to the outside. The inner skeleton is provided with a first through hole, and the distribution density and / or pore size of the first through hole increases from the bottom to the top of the inner skeleton. The outer frame is provided with a second through hole, and the distribution density and / or diameter of the second through hole increases from the bottom to the top of the outer frame; The base has a multi-lobed structure, including a main body, a plurality of lobes on the outer edge of the main body, a first liquid passage hole on the main body, and a second liquid passage hole evenly distributed on the lobes.

2. The filter element structure according to claim 1, characterized in that, The inner skeleton is divided into multiple segments along its length, and the distribution density of the first through holes in each segment is the same. The distribution density of the first through holes in the multiple segments increases sequentially from the bottom to the top of the inner skeleton.

3. The filter element structure according to claim 2, characterized in that, The diameter of the first through hole in each of the sections is the same, and the diameter of the first through hole in the multiple sections increases sequentially from the bottom to the top of the inner frame.

4. The filter element structure according to claim 1, characterized in that, The outer frame is divided into multiple segments along its length, each segment having the same distribution density of the second through holes, and the distribution density of the second through holes in the multiple segments increasing sequentially from the bottom to the top of the outer frame; and / or The diameter of the second through hole in each of the sections is the same, and the diameter of the second through hole in the multiple sections increases sequentially from the bottom to the top of the outer frame.

5. The filter element structure according to claim 1, characterized in that, The filter screen adopts a pleated filter screen structure, which is formed by sintering and bending multiple layers of filter cloth. The pleats formed by the pleated filter screen are evenly distributed along the axis of the filter screen assembly.

6. A filtration device, characterized in that, The filter element structure includes any one of claims 1-5.

7. The filtration device according to claim 6, characterized in that, The filtration device includes a valve body, a filter cartridge assembly is disposed on the valve body, the filter element structure is disposed inside the filter cartridge assembly, an end cap assembly is disposed on the top of the filter cartridge assembly, the base of the filter element structure is fixed in the valve body, and the top cover abuts against the end cap assembly.

8. The filtration device according to claim 7, characterized in that, The valve body, the filter cartridge assembly, the end cap assembly, and the filter element structure are connected by welding or adhesive bonding.

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