Filter cartridge assembly

Abstract

The utility model relates to filter device field discloses filter core subassembly, including bottom plate and top, is provided with clamping groove I and clamping groove II on bottom plate, is provided with input, positioning groove I and positioning groove II on top, is provided with sealing ring on input, is provided with double -layer filter core on clamping groove I, is provided with recess filter core on clamping groove II, recess filter core is located inner ring, and double -layer filter core is located outer ring, and double -layer filter core mainly consists of melt -blown cloth filter layer and PTFE film filter layer from inside to outside, recess filter core has the convex surface of arc shape and the recess surface of arc shape, and the convex surface and recess surface are connected as a whole, and double -layer filter core top is located in positioning groove I, and recess filter core top is located in positioning groove II, the utility model improves the filtration efficiency, reduces maintenance cost, and the structure is relatively simple, and the manufacturing cost is lower.

Description

Technical Field

[0001] This utility model relates to the field of filtration devices, specifically filter element assemblies. Background Technology

[0002] Filter cartridges are the heart of a filter, primarily used in oil filtration, air filtration, and water filtration industries to protect equipment and ensure air cleanliness. Existing filter cartridges will eventually wear out and need replacement. Replacing the entire cartridge increases maintenance costs.

[0003] The filter element assembly disclosed in reference CN106178643A has a raw water inlet, a pure water inlet, and a wastewater inlet. Raw water entering through the raw water inlet flows into the raw water channel. The water in the raw water channel passes through a water-saving membrane, and after filtration, the resulting pure water enters the pure water central pipe. The pure water in the pure water central pipe flows from the pure water outlet into the pure water outlet pipe. From the upper end of the pure water outlet pipe, it flows through the internal space of a switching valve into the pure water conduit, then into the pure water channel connected to the pure water conduit, and finally flows out through the pure water inlet into the pure water connector. Wastewater generated by the water-saving membrane filtration enters the wastewater central pipe. The wastewater in the wastewater central pipe flows from the wastewater outlet into the wastewater channel, then flows into the wastewater conduit on the switching valve, and finally exits through the wastewater inlet into the wastewater connector. The filter element has a large number of inlets, a relatively complex structure, and a relatively high manufacturing cost. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a filter element assembly that improves filtration efficiency, reduces maintenance costs, has a relatively simple structure, and has a low manufacturing cost.

[0005] To solve the above technical problems, this utility model provides a filter element assembly, including a base plate and a top cover. The base plate is provided with slot I and slot II, and the top cover is provided with an inlet, positioning slot I, and positioning slot II. A sealing ring is provided on the inlet. A double-layer filter element is provided on slot I, and a grooved filter element is provided on slot II. The grooved filter element is located in the inner ring, and the double-layer filter element is located in the outer ring. The double-layer filter element is mainly composed of a meltblown cloth filter layer and a PTFE membrane filter layer from the inside to the outside. The grooved filter element has an arc-shaped raised surface and an arc-shaped groove surface, and the raised surface and the groove surface are connected as one piece. The top of the double-layer filter element is set in positioning slot I, and the top of the grooved filter element is set in positioning slot II.

[0006] By adopting the above technical solution, which uses inner and outer filter elements, the inner filter element consists of multiple raised and recessed surfaces, while the outer filter element consists of two filter layers. This improves filtration efficiency, extends service life, and has a relatively simple structure with lower manufacturing costs. Furthermore, the dual-layer filter element and the recessed filter element can be replaced individually, reducing maintenance costs.

[0007] Preferably, the outer diameter of the grooved filter element is 70-85% of the outer diameter of the filter element assembly, and the inner diameter of the grooved filter element is 60-75% of the outer diameter of the filter element assembly.

[0008] By adopting the above technical solution, structural stability is ensured, uneven fluid distribution due to excessive outer diameter is avoided, pressure differential is reduced, the durability of grooved filter element is increased, and the service life of component is extended.

[0009] Preferably, the double-layer filter element is provided with an upper limit ring at the top and a lower limit ring at the bottom; the lower limit ring is installed in the slot I and the upper limit ring is installed in the positioning slot I.

[0010] By adopting the above technical solution, the structure of the double-layer filter element with upper and lower limit rings makes the double-layer filter element modular. The lower limit ring is inserted into the slot I, and the upper limit ring is embedded in the positioning slot I, which makes maintenance and disassembly convenient, significantly shortens the filter element replacement time, and reduces downtime costs.

[0011] Preferably, the shapes of the card slot II and the positioning slot II are consistent with the curves of the raised surface and the grooved surface of the grooved filter element.

[0012] By adopting the above technical solution, the grooved filter element and the slot II and positioning slot II are in full-curved surface contact, which reduces the relative sliding between components and further improves the structural stability of the grooved filter element.

[0013] Preferably, both the card slot I and the positioning slot I are provided with sealing element I.

[0014] By adopting the above technical solution, the sealing component I fills the tiny gaps between the double-layer filter element and the slot I and positioning slot I, preventing fluid from passing through the gaps into the double-layer filter element, ensuring that the fluid passes through the double-layer filter element evenly, and improving the particle interception efficiency.

[0015] Preferably, both the card slot II and the positioning slot II are equipped with sealing element II.

[0016] By adopting the above technical solution, the sealing element II fills the tiny gaps between the grooved filter element and the slot II and positioning slot II, preventing the fluid from passing through the gaps into the grooved filter element, ensuring that the fluid passes through the grooved filter element evenly, and improving the particle interception efficiency.

[0017] Preferably, the base plate is a closed plate structure, and slot I and slot II are located on the upper surface of the base plate.

[0018] By adopting the above technical solution, the closed plate structure has no openings or perforations, has high overall rigidity, and can effectively disperse the stress generated by the double-layer filter element, grooved filter element and fluid, further increasing the structural strength of the component and extending the service life of the component.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model adopts an inner and outer double-ring filter element. The inner ring filter element consists of multiple raised and grooved surfaces, while the outer ring filter element consists of two filter layers. This improves filtration efficiency, extends service life, and has a relatively simple structure with low manufacturing cost. Furthermore, the double-layer filter element and the grooved filter element can be replaced individually, reducing maintenance costs.

[0020] 2. The filter surface of the grooved filter element of this utility model is convex and concave in the shape of an arc, which effectively increases the filtration area, reduces fluid dead zone, avoids impurity deposition, can intercept more particles without clogging, and improves filtration efficiency.

[0021] 3. The base plate of this utility model is a closed plate structure without openings or perforations, which has strong overall rigidity and can effectively disperse the stress generated by the double-layer filter element, grooved filter element and fluid, further increasing the structural strength of the component and extending the service life of the component. Attached Figure Description

[0022] Figure 1 This is a perspective view of the present utility model; Figure 2 This is a cross-sectional view of the present invention; Figure 3 This is a schematic diagram of the base plate of this utility model; Figure 4 This is a schematic diagram of the top cover of this utility model; Figure 5 This is a schematic diagram of the grooved filter element of this utility model.

[0023] Drawing numbers: 1. Base plate, 2. Top cover, 3. Slot I, 4. Slot II, 5. Input port, 6. Positioning slot I, 7. Positioning slot II, 8. Double-layer filter element, 9. Grooved filter element, 10. Meltblown fabric filter layer, 11. PTFE membrane filter layer, 12. Raised surface, 13. Grooved surface, 14. Upper limit ring, 15. Lower limit ring, 16. Seal I, 17. Seal II, 18. Sealing ring. Detailed Implementation

[0024] like Figure 1 , 2As shown, the filter element assembly includes a base plate 1 and a top cover 2. The base plate 1 has slots I3 and II4, while the top cover 2 has an inlet 5, a positioning slot I6, and a positioning slot II7. A sealing ring 18 is installed on the inlet 5. A double-layer filter element 8 is installed on slot I3, and a grooved filter element 9 is installed on slot II4. The grooved filter element 9 is located in the inner ring, and the double-layer filter element 8 is located in the outer ring. The double-layer filter element 8 mainly consists of a meltblown fabric filter layer 10 and a PTFE membrane filter layer 11 from the inside out, forming a three-dimensional filter cake effect, combining impurity interception and deep filtration. The grooved filter element 9 has an arc-shaped raised surface 12 and an arc-shaped grooved surface 13, which are integrated. The top of the double-layer filter element 8 is positioned in the positioning slot I6, and the top of the grooved filter element 9 is positioned in the positioning slot II7.

[0025] like Figure 2 As shown, the double-layer filter element 8 has an upper limit ring 14 at the top and a lower limit ring 15 at the bottom; the lower limit ring 15 is installed in the slot I3, and the upper limit ring 14 is installed in the positioning groove I6. The structure of the double-layer filter element 8 with the upper limit ring 14 and the lower limit ring 15 makes the double-layer filter element 8 modular. The lower limit ring 15 is inserted into the slot I3, and the upper limit ring 14 is embedded in the positioning groove I6, which facilitates maintenance and disassembly, significantly shortens the filter element replacement time, and reduces downtime costs.

[0026] like Figure 3 , 4 As shown, the shapes of the slot II4 and the positioning slot II7 are consistent with the curves of the raised surface 12 and the grooved surface 13 of the grooved filter element 9. The grooved filter element 9 and the slot II4 and the positioning slot II7 are in full-curved surface contact, which reduces the relative sliding between components and further improves the structural stability of the grooved filter element 9.

[0027] Both slot I3 and positioning slot I6 are equipped with sealing element I16. The sealing element I16 fills the tiny gaps between the double-layer filter element 8 and slots I3 and I6, preventing fluid from passing through the gaps and ensuring that the fluid passes through the double-layer filter element 8 evenly, thereby improving the particle interception efficiency.

[0028] Both slot II4 and positioning slot II7 are equipped with sealing element II17. The sealing element II17 fills the tiny gaps between the grooved filter element 9 and slot II4 and positioning slot II7, preventing fluid from passing through the gaps and ensuring that the fluid passes through the grooved filter element 9 evenly, thereby improving the particle interception efficiency.

[0029] like Figure 3 As shown, the base plate 1 is a closed plate structure. This closed plate structure has no openings or perforations, resulting in high overall rigidity. It effectively disperses the stress generated by the double-layer filter element 8, the grooved filter element 9, and the fluid, further increasing the structural strength of the assembly and extending its service life. Slots I3 and II4 are located on the upper surface of the base plate 1.

[0030] like Figure 5As shown, multiple raised surfaces 12 form a circumferential ring, and the outer circumference where the top surface of the raised surface is located forms the outer diameter of the grooved filter element 9, which is 70%-85% of the outer diameter of the filter element assembly. Multiple grooved surfaces 13 form a circumferential ring, and the inner circumference where the bottom surface of the groove is located forms the inner diameter of the grooved filter element 9, which is 60%-75% of the outer diameter of the filter element assembly. This design ensures structural stability, avoids uneven fluid distribution due to excessively large outer diameter, reduces pressure differential, increases the durability of the grooved filter element 9, and extends the service life of the assembly.

[0031] This application employs an inner and outer double-ring filter element. The inner ring filter element consists of multiple raised surfaces 12 and multiple recessed surfaces 13, while the outer ring filter element consists of two filter layers. This improves filtration efficiency, extends service life, and has a relatively simple structure with low manufacturing costs. Furthermore, the double-layer filter element 8 and the recessed filter element 9 can be replaced individually, reducing maintenance costs. The filter surface of the recessed filter element 9 has an arc-shaped raised and recessed design, effectively increasing the filtration area, reducing fluid dead zones, preventing impurity deposition, and intercepting more particles without easily clogging, thus improving filtration efficiency.

[0032] During component installation, the base plate 1 is installed into the base plate seat inside the filter, and the top cover 2 is fixed by the filter end cap. The fluid pipeline is installed on the inlet 5 of the top cover 2 through the sealing ring 18. During filtration, the fluid enters the inner cavity of the grooved filter element 9 from the inlet 5. After being filtered by the grooved filter element 9, the fluid flows through the double-layer filter element 8, where it is filtered layer by layer by the meltblown cloth filter layer 10 and the PTFE membrane filter layer 11, resulting in a clean fluid output.

[0033] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been shown and explained in the embodiments. Without departing from the stated principles, the implementation of the present invention may have any variations or modifications.

Claims

1. A filter element assembly, comprising a base plate (1) and a top cover (2), characterized in that: The base plate (1) is provided with slot I (3) and slot II (4), and the top cover (2) is provided with input port (5), positioning slot I (6) and positioning slot II (7); a sealing ring (18) is provided on the input port (5); a double-layer filter element (8) is provided on slot I (3), and a grooved filter element (9) is provided on slot II (4); the grooved filter element (9) is located in the inner ring, and the double-layer filter element (8) is located in the outer ring; the double-layer filter element (8) is mainly composed of meltblown cloth filter layer (10) and PTFE membrane filter layer (11) from the inside to the outside; the grooved filter element (9) has an arc-shaped raised surface (12) and an arc-shaped groove surface (13), and the raised surface (12) and the groove surface (13) are connected as one; the top of the double-layer filter element (8) is set in the positioning slot I (6), and the top of the grooved filter element (9) is set in the positioning slot II (7).

2. The filter element assembly according to claim 1, characterized in that: The outer diameter of the grooved filter element (9) is 70-85% of the outer diameter of the filter element assembly, and the inner diameter of the grooved filter element (9) is 60-75% of the outer diameter of the filter element assembly.

3. The filter element assembly according to claim 1, characterized in that: The double-layer filter element (8) is provided with an upper limit ring (14) at the top and a lower limit ring (15) at the bottom; the lower limit ring (15) is installed in the slot I (3) and the upper limit ring (14) is installed in the positioning slot I (6).

4. The filter element assembly according to claim 1, characterized in that: The shapes of the slot II (4) and the positioning slot II (7) are consistent with the curves of the raised surface (12) and the groove surface (13) of the groove filter element (9).

5. The filter element assembly according to claim 1, characterized in that: Both the card slot I (3) and the positioning slot I (6) are equipped with sealing element I (16).

6. The filter element assembly according to claim 1, characterized in that: Both the card slot II (4) and the positioning slot II (7) are equipped with sealing element II (17).

7. The filter element assembly according to claim 1, characterized in that: The base plate (1) is a closed plate structure, and slot I (3) and slot II (4) are set on the upper end face of the base plate (1).

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