Self-cleaning filter assembly and use thereof

Abstract

The application provides a self-cleaning filter assembly and application thereof, and belongs to the filter field. The self-cleaning filter assembly comprises a plurality of self-cleaning laminates arranged in parallel in the axial direction, and a main filter screen installed on the self-cleaning laminates. The self-cleaning laminate adopts a hollow cylindrical structure, is divided into a plurality of independent filter cavities in the circumferential direction, and the inner wall of the self-cleaning laminate is provided with a liquid inlet corresponding to each filter cavity. The main filter screen is installed on the upper and lower sides of the filter cavity to increase the specific filtration area of the self-cleaning filter assembly. The hollow laminate screen structure can replace the traditional cylindrical surface screen structure, thereby greatly increasing the filtration area in the limited space size, obtaining the compact self-cleaning filter assembly with large specific filtration area and high self-cleaning efficiency, realizing high-precision and low-pressure-loss filtration, reducing the loss of clean liquid during self-cleaning, and improving the self-cleaning efficiency.

Description

Technical Field

[0001] This invention belongs to the field of filters, and more specifically, relates to a self-cleaning filter assembly and its application. Background Technology

[0002] Self-cleaning oil filters are widely used in power, petrochemical, and construction machinery industries, playing a vital role in the stable and reliable operation of oil systems such as lubricating oil and hydraulic oil. As the core component of self-cleaning oil filters, the self-cleaning filter assembly is a key focus and challenge in research and development.

[0003] Traditional self-cleaning filter modules have a cylindrical surface mesh structure. When the operating flow rate is high, to ensure high filtration accuracy and low pressure loss, a self-cleaning filter module with a large filtration area is required. Consequently, the overall size of the self-cleaning oil filter becomes very large, which is not conducive to the spatial arrangement of the self-cleaning oil filter. Furthermore, because the self-cleaning filter module has a cylindrical surface mesh structure, the loss of clean oil during self-cleaning is large, the self-cleaning effect is poor, and impurities are easily trapped in the filtered oil. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the purpose of this invention is to provide a self-cleaning filter component and its application, aiming to solve the problems of low specific filtration area and poor self-cleaning effect of existing self-cleaning filter components.

[0005] To achieve the above objectives, according to one aspect of the present invention, a self-cleaning filter assembly is provided, comprising a plurality of self-cleaning discs arranged parallel to each other along the axial direction, and a main filter screen mounted on the self-cleaning discs, wherein: the self-cleaning discs adopt a hollow cylindrical structure, which is divided into a plurality of independent filter chambers along the circumferential direction, and the inner wall of the self-cleaning discs has liquid inlets corresponding to each filter chamber for introducing liquid to be filtered or discharging self-cleaning liquid; the main filter screen is mounted on the upper and lower sides of the filter chambers to increase the specific filtration area of ​​the self-cleaning filter assembly.

[0006] As a further preferred embodiment, the self-cleaning filter assembly further includes an edge filter screen, and the outer wall of the self-cleaning stack is provided with an edge filter screen mounting hole, in which the edge filter screen is installed to improve the edge cleaning effect of the main filter screen.

[0007] As a further preferred embodiment, the upper and lower surfaces of the self-cleaning stack are provided with stack assembly bosses for assembling adjacent self-cleaning stacks.

[0008] As a further preferred embodiment, the filter chamber is provided with a main filter screen mounting groove around its perimeter for fixing the main filter screen.

[0009] As a further preferred embodiment, the number of self-cleaning discs in the self-cleaning filter assembly is 3 to 30.

[0010] As a further preferred embodiment, the height of the self-cleaning stack is 10mm to 30mm.

[0011] As a further preferred embodiment, the number of filter chambers in the self-cleaning stack is 8 to 18.

[0012] As a further preferred embodiment, the mesh size of the main filter is 40 to 400 mesh.

[0013] As a further preferred embodiment, the mesh size of the edge filter is 40 to 400 mesh.

[0014] According to another aspect of the present invention, a self-cleaning filter including the above-described self-cleaning filter assembly is provided.

[0015] In summary, the technical solutions conceived by this invention have the following beneficial effects compared with the prior art:

[0016] 1. By setting self-cleaning stacked plates and fixing the main filter screen on its upper and lower surfaces, the present invention can form a hollow stacked plate mesh structure to replace the traditional cylindrical surface mesh structure, thereby greatly increasing the filtration area within a limited space. This results in a compact self-cleaning filter assembly with a larger filtration area and higher self-cleaning efficiency, achieving high-precision and low-pressure-loss filtration, reducing the loss of clean liquid during self-cleaning, and improving self-cleaning efficiency.

[0017] 2. In particular, by providing an edge filter screen on the outer wall of the self-cleaning stack, the present invention enables some cleaning oil to enter the filter chamber through the edge filter screen during self-cleaning to self-clean the edge of the main filter screen, thereby avoiding the formation of local fluid dead zones at the edge of the filter chamber during self-cleaning, which would result in the edge of the main filter screen not being cleaned properly.

[0018] 3. Meanwhile, in this invention, the sidewalls of adjacent filter chambers form main filter screen mounting grooves, which, together with the sidewalls of the filter chambers, fix and support the main filter screen, thereby improving the strength, impact resistance and tear resistance of the main filter screen. Attached Figure Description

[0019] Figure 1 This is a front view of the self-cleaning filter assembly provided in an embodiment of the present invention;

[0020] Figure 2 This is a top half-sectional view of the self-cleaning filter assembly provided in an embodiment of the present invention;

[0021] Figure 3 This is a front half-sectional view of the self-cleaning filter assembly provided in an embodiment of the present invention.

[0022] In all the accompanying drawings, the same reference numerals are used to denote the same elements or structures, wherein:

[0023] 1-Self-cleaning discs, 2-Main filter screen, 3-Edge filter screen, 4-Liquid inlet, 5-Main filter screen mounting groove, 6-Edge filter screen mounting hole, 7-Filter chamber, 8-Disc assembly boss, 9-Oil outlet channel. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0025] like Figures 1-3 As shown, the present invention provides a self-cleaning filter assembly, which includes multiple self-cleaning stacked plates 1 arranged parallel to each other along the axial direction, and a main filter screen 2 installed on the self-cleaning stacked plates 1. The self-cleaning stacked plates 1 adopt a hollow cylindrical structure, and the hollow space constitutes the inner cavity of the self-cleaning filter assembly. The self-cleaning stacked plates 1 are divided into multiple independent filter chambers 7 along the circumferential direction, and the inner wall of the self-cleaning stacked plates 1 has liquid inlets 4 corresponding to each filter chamber 7, thereby connecting the filter chambers 7 with the inner cavity of the self-cleaning filter assembly for introducing the liquid to be filtered into each filter chamber 7 or discharging the liquid that has completed self-cleaning. The main filter screen 2 is installed on the upper and lower sides of the filter chamber 7 to form a hollow stacked mesh structure, which effectively increases the specific filtration area of ​​the self-cleaning filter assembly. At the same time, an oil outlet channel 9 is formed between two adjacent main filter screens 2 for discharging the filtered liquid or introducing the liquid used for self-cleaning.

[0026] When the self-cleaning filter assembly is in filtration mode, liquid flows from the inside out through the self-cleaning filter assembly. The liquid to be filtered enters the filter chamber 7 through the liquid inlet 4 on the inner wall. After impurities in the liquid are filtered out by the main filter screen 2, it is discharged from the self-cleaning filter assembly through the oil outlet channel 9, resulting in filtered liquid. When the self-cleaning filter assembly is in self-cleaning mode, liquid flows from the outside out through the self-cleaning filter assembly. The filter's suction shaft will create a local negative pressure at the liquid inlet 4, causing the liquid in the filter to flow into the filter chamber 7 through the oil outlet channel 9. As the liquid passes through the main filter screen 2, it can remove impurities on the main filter screen 2. Finally, the self-cleaning liquid flows out of the self-cleaning filter assembly through the liquid inlet 4, completing the self-cleaning of the main filter screen 2.

[0027] Furthermore, the self-cleaning filter assembly also includes an edge filter screen 3, and the outer wall of the self-cleaning stack 1 has an edge filter screen mounting hole 6. The edge filter screen 3 is installed in the edge filter screen mounting hole 6 to improve the edge cleaning effect of the main filter screen 2. To ensure the edge cleaning effect, each filter chamber 7 is provided with at least one edge filter screen 3. When the self-cleaning filter assembly is in filtration mode, the liquid to be filtered can also be discharged from the self-cleaning filter assembly through the edge filter screen 3 to remove impurities in the liquid; when the self-cleaning filter assembly is in self-cleaning mode, the liquid used for self-cleaning enters the filter chamber 7 through the edge filter screen 3, which can remove impurities on the edge filter screen 3 and also prevent the formation of local liquid dead zones at the edge of the filter chamber 7 during self-cleaning, thus avoiding incomplete edge cleaning of the main filter screen 2.

[0028] Furthermore, the upper and lower surfaces of the self-cleaning stack 1 are provided with stack assembly bosses 8 for assembling the self-cleaning stack 1. At the same time, the stack assembly bosses 8 can also ensure the sealing and coaxiality between the self-cleaning stack 1.

[0029] Furthermore, a main filter screen mounting groove 5 is provided around the filter chamber 7. The main filter screen 2 is pressed into the main filter screen mounting groove 5, so that the main filter screen 2 is firmly combined with the self-cleaning disc 1. It also works with the side wall of the filter chamber 7 to fix and support the main filter screen 2, thereby improving the strength and rigidity of the main filter screen 2 and preventing the main filter screen 2 from being washed away or torn by liquid during filtration and self-cleaning.

[0030] Furthermore, the number of self-cleaning discs 1 in the self-cleaning filter assembly is 3 to 30, the height of the self-cleaning discs 1 is 10mm to 30mm, and the number of filter chambers 7 in the self-cleaning discs 1 is 8 to 18. By optimizing the various parameters of the self-cleaning discs 1, the self-cleaning efficiency of the self-cleaning filter assembly can be further improved. The mesh size of the main filter screen 2 is 40 to 400 mesh, and the mesh size of the edge filter screen 3 is 40 to 400 mesh; these can be set according to the filtration precision in practical applications.

[0031] The assembly process of the self-cleaning filter assembly provided by the present invention is as follows: first, the main filter screen 2 is pressed into the main filter screen mounting groove 5 on the upper and lower sides of the self-cleaning stack 1; then, the edge filter screen 3 is installed in the edge filter screen mounting hole 6; finally, multiple self-cleaning stacks 1 are assembled together by the stack assembly boss 8 to form a self-cleaning filter assembly. Figure 2 The diagram only illustrates the assembly of two self-cleaning discs 1. In the self-cleaning filter assembly provided by this invention, the self-cleaning discs 1, main filter screen 2, and edge filter screen 3 can all be manufactured independently, achieving a modular design and significantly reducing the production cycle. The self-cleaning discs 1 can be manufactured using machining or casting with finishing processes. The main filter screen 2 and edge filter screen 3 are made of woven metal mesh.

[0032] According to another aspect of the present invention, a self-cleaning filter including the above-described self-cleaning filter assembly is provided.

[0033] Those skilled in the art will readily understand that the above description is merely 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 within the scope of protection of the present invention.

Claims

1. A self-cleaning filter assembly, characterized in that, The cleaning and filtration assembly includes multiple self-cleaning discs (1) arranged parallel to each other along the axial direction, and also includes a main filter screen (2) installed on the self-cleaning discs (1). The self-cleaning discs (1) adopt a hollow cylindrical structure, which is divided into multiple independent filter chambers (7) along the circumferential direction. The inner wall of the self-cleaning discs (1) is provided with liquid inlets (4) corresponding to each filter chamber (7) for introducing the liquid to be filtered or discharging the self-cleaning liquid. The main filter screen (2) is installed on the upper and lower sides of the filter chamber (7) to form a hollow disc mesh structure to increase the specific filtration area of ​​the self-cleaning filtration assembly. At the same time, an oil outlet channel (9) is formed between two adjacent main filter screens (2) for discharging the filtered liquid or introducing the liquid for self-cleaning. The self-cleaning filter assembly also includes an edge filter (3), and the outer wall of the self-cleaning stack (1) is provided with an edge filter mounting hole (6). The edge filter (3) is installed in the edge filter mounting hole (6) to improve the edge cleaning effect of the main filter (2). The upper and lower surfaces of the self-cleaning stack (1) are provided with stack assembly bosses (8) for assembling adjacent self-cleaning stacks (1); The filter chamber (7) is provided with a main filter screen mounting groove (5) around its perimeter for fixing the main filter screen (2).

2. The self-cleaning filter assembly as described in claim 1, characterized in that, The number of self-cleaning discs (1) in the self-cleaning filter assembly is 3 to 30.

3. The self-cleaning filter assembly as described in claim 1, characterized in that, The height of the self-cleaning stack (1) is 10 mm to 30 mm.

4. The self-cleaning filter assembly as described in claim 1, characterized in that, The number of filter chambers (7) in the self-cleaning stack (1) is 8 to 18.

5. The self-cleaning filter assembly as described in claim 1, characterized in that, The main filter (2) has a mesh size of 40 to 400 mesh.

6. The self-cleaning filter assembly according to any one of claims 1 to 5, characterized in that, The edge filter (3) has a mesh size of 40 to 400 mesh.

7. A self-cleaning filter, characterized in that, The self-cleaning filter includes the self-cleaning filter assembly as described in any one of claims 1 to 6.

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