An offline filter cartridge

Abstract

The application relates to an offline filter element, which comprises multiple filter element layers composed of two monomers, the front surface of the monomer is convex, the back surface is concave, and the layers are formed by vertically crossing and bonding the concave surfaces of adjacent monomers to form a layered structure, and the layers are also connected in the same way; the back surface of the monomer is provided with an electrostatic spinning layer, and can contain activated carbon powder or diatomite powder to enhance the adsorption capacity. In addition, the front and back surfaces of the monomer are provided with multiple convex points, which facilitate dehydration and structural stability during the manufacturing process, and the filter element layer is further provided with a spiral flow channel, and oil flows from the outside to the inside. The application improves the filtering efficiency and stability through the above design, and is especially suitable for high-precision filtering requirements.

Description

Technical Field

[0001] This application relates to the field of oil filtration, and more particularly to an offline filter element. Background Technology

[0002] Currently, there are many types of offline filter cartridges on the market, mainly made from unbleached cotton fibers or semi-chemical cellulose. While these materials have good filtration performance, their high cost limits their widespread application in large-scale industrial production. Furthermore, existing filter cartridges generally suffer from low filtration efficiency and require multiple filtrations to achieve the desired effect, which not only increases energy consumption but also prolongs the production cycle and reduces overall production efficiency.

[0003] Due to the different uses, performance, and contamination levels of lubricating oils, the regeneration treatment of contaminated lubricating oils is divided into two categories based on the degree of deterioration: repurification processes that mainly use physical methods and refining processes that mainly use chemical methods.

[0004] Physical methods include sedimentation, distillation, and filtration; among which filtration includes fiber filter cartridges, paper filter cartridges, metal filter cartridges, and microporous membrane filter cartridges.

[0005] Chemical methods: sulfuric acid-clay refining process, hydrogenation refining process, solvent extraction refining process, molecular distillation technology.

[0006] Filtration using chemical methods is costly and can lead to chemical pollution.

[0007] Conventional filter cartridges, such as those using corrugated paper filter cartridges, are relatively inexpensive, but they have a small dirt-holding capacity and low single-pass filtration efficiency, requiring multiple filtration cycles. Utility Model Content

[0008] To address the aforementioned issues, this application provides an offline filter cartridge.

[0009] The offline filter element provided in this application adopts the following technical solution:

[0010] An offline filter cartridge, comprising:

[0011] The filter element body includes multiple filter element layers. Each filter element layer is composed of two units. Each unit has a raised front side and a recessed back side. The filter element layer is a layered structure formed by bonding adjacent units in a vertically intersecting manner between their recessed surfaces. The layers are bonded together with the raised parts perpendicularly intersecting each other.

[0012] An electrospinning layer is provided in the recessed area on the reverse side of the monomer.

[0013] By adopting the above technical solutions, the single-cell and interlayer cross-structure design provides a huge dirt holding capacity, ensuring the filtration effect; the electrospinning layer set in the recessed area on the reverse side of the single-cell achieves the dual effects of fine filtration and ultra-fine filtration, improving filtration efficiency and filtration accuracy; the surface protrusion design ensures structural stability during the manufacturing process and avoids subsequent trimming processes; multiple impurities are filtered simultaneously, improving the overall filtration performance.

[0014] Preferably, the monomer is made of plant fiber material.

[0015] By adopting the above technical solution, the monolithic plant fiber layer can intercept most of the larger particles and suspended matter during the initial filtration, improving the effect of single filtration and reducing the need for multiple filtrations. The use of plant fiber materials significantly reduces the production cost of the filter element, while retaining good water absorption and adsorption capacity, and can effectively remove water and varnish from the lubricating oil.

[0016] Preferably, the plant fiber layer may contain activated carbon powder or diatomaceous earth powder to enhance the adsorption capacity for organic matter and improve the filtration effect.

[0017] By adopting the above technical solutions, activated carbon powder or diatomaceous earth powder can effectively adsorb organic pollutants in lubricating oil, such as varnish and other polar substances, further improving the one-time filtration efficiency and purification quality of the filter element.

[0018] Preferably, the electrospun layer is made of nylon material.

[0019] By adopting the above technical solution, the electrospun layer is made of nylon material, which enhances the corrosion resistance and wear resistance of the filter element, ensuring that no corrosion occurs in various acid values ​​and oxide environments, and improving the service life of the filter element; the nylon material has good electrospinning performance, ensuring that the electrospun layer is uniform and adjustable, further improving the filtration accuracy, especially the filtration efficiency of particles larger than 3 microns reaches more than 99%.

[0020] Preferably, the monomer has several protrusions on both sides to facilitate better dehydration and maintain structural stability during the monomer manufacturing process.

[0021] By adopting the above technical solution, several protrusions are provided on both the front and back sides of the filter element, which allows for better dehydration and maintains structural stability during the manufacturing process. This not only improves production efficiency but also ensures the reliability and durability of the filter element during use. The protrusion design increases the filtration surface area, further improving filtration efficiency and dirt holding capacity.

[0022] Preferably, the filter layer further includes an activated carbon layer located between the plant fiber layer and the electrospun layer.

[0023] By adopting the above technical solution, an activated carbon layer is added to the filter element layer, which further enhances the adsorption capacity for organic matter and improves the filtration effect. Specifically, the activated carbon layer can effectively adsorb organic pollutants in lubricating oil, such as sludge and varnish, significantly improving the filter element's single-pass filtration efficiency and purification quality.

[0024] Preferably, the activated carbon powder is uniformly distributed within the plant fiber layer.

[0025] By employing the above technical solution, activated carbon powder is evenly distributed within the plant fiber layer, further enhancing its adsorption capacity for organic matter and improving the filtration effect. Specifically, activated carbon possesses a rich microporous structure and a large specific surface area, enabling it to effectively adsorb organic pollutants in lubricating oil, such as varnish and other dissolved impurities, thereby significantly improving the purification efficiency of a single filtration.

[0026] Preferably, the filter element layer has a spiral flow channel inside.

[0027] By adopting the above technical solution, a spiral flow channel is set inside the filter element layer, which can guide the liquid to flow in a spiral shape, increase the contact time and filtration path, and further improve the filtration efficiency.

[0028] Preferably, the spiral flow channel is composed of multiple corrugated wood fiber sheets with the grain directions overlapping at 90° orthogonal. The oil enters from the outside of the filter element and flows out from the inside.

[0029] By adopting the above technical solutions, the spiral flow channel design allows the oil to flow in a spiral shape inside the filter element, increasing the contact time between the liquid and the filter media, thereby further improving the filtration efficiency. The corrugated wood fiber sheet design with overlapping textures at 90° orthogonal directions not only increases the filtration path but also ensures a more uniform distribution of oil inside the filter element, avoiding excessive local filtration load and further enhancing the overall dirt-holding capacity and service life of the filter element.

[0030] Preferably, the filter element layer has no less than 15 layers.

[0031] By adopting the above technical solution, the design with no fewer than 15 filter layers significantly increases the dirt-holding capacity, ensuring efficient removal of various impurities from the oil in a single filtration cycle. The multi-layered structure not only improves filtration efficiency but also extends the filter element's lifespan, reducing the need for frequent replacements and lowering maintenance costs and operational complexity. Simultaneously, the multi-layered structure enhances the overall stability of the filter element, guaranteeing reliability and consistency over extended periods of operation.

[0032] In summary, this application includes at least one of the following beneficial technical effects:

[0033] 1. The cross-structure design between individual units and layers significantly improves the dirt holding capacity of the filter element, enabling the removal of a large amount of impurities in a single filtration, reducing the need for multiple filtrations, thereby improving production efficiency and reducing costs;

[0034] 2. The combination of plant fiber layer and electrospun layer achieves the effects of fine filtration and ultrafine filtration, ensuring a filtration accuracy of over 99% for particles larger than 3 microns, while effectively adsorbing varnish and other fine impurities, thus improving the overall purification effect of a single filtration.

[0035] 3. The surface bump design not only ensures structural stability during the manufacturing process of the unit, but also increases the filter surface area, further enhancing filtration efficiency and service life. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the structure of an offline filter element according to this application.

[0037] Figure 2 This is a schematic diagram of the filter element structure of this application.

[0038] Figure 3 This is a sectional view of a single unit in this application.

[0039] Explanation of reference numerals in the attached drawings: 1. Filter element body; 11. Filter element layer; 111. Monomer; 1111. Front side; 1112. Back side; 112. Electrospun layer. Detailed Implementation

[0040] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0041] This application discloses an offline filter cartridge. (Refer to...) Figure 1 The offline filter element includes a filter element body, which comprises multiple filter element layers. Each filter element layer consists of two individual units, each unit having a convex front and a concave back. The filter element layer is a layered structure formed by bonding adjacent concave surfaces of the individual units in a perpendicular, intersecting manner. The layers are bonded together with convex surfaces perpendicularly intersecting each other. An electrospun layer is disposed in the concave area on the back of each individual unit. This design achieves improved dirt holding capacity and filtration accuracy while reducing the need for multiple filtrations, thus increasing production efficiency. (Refer to...) Figure 2 Specifically, the filter element body comprises multiple filter layers. Each filter layer consists of two individual units, designed with a convex front and a concave back. This design allows the two units to be bonded together with their concave faces perpendicularly intersecting, forming a stable layered structure. Each layer is further reinforced by convex-to-convex perpendicular intersecting bonding, further enhancing structural stability. This multi-layered, cross-structure significantly increases dirt-holding capacity and improves filtration efficiency. (Refer to...) Figure 3More specifically, an electrospun layer is formed in the recessed area on the reverse side of the monomer. This electrospun layer is very thin, only 1-5 μm thick, and is mainly used to filter fine impurities. The electrospun layer can be made of nylon, which has excellent corrosion resistance and abrasion resistance, ensuring it will not be damaged in various acid values ​​and oxidizing environments. Alternatively, polyester or other high-strength materials can be used as alternatives. To further improve the filtration effect, activated carbon powder or diatomaceous earth powder can be added to the plant fiber layer. These substances have strong adsorption capacity and can effectively remove organic matter and other minute impurities. Activated carbon powder can be mixed with particles of different sizes to meet different filtration needs. Diatomaceous earth powder can also have its particle size adjusted as needed to optimize the filtration effect. (See reference...) Figure 2 In addition, the monomer has several raised dots on both sides. These dots help to dehydrate the monomer better and maintain structural stability during manufacturing. The design of the dots can be adjusted according to actual needs; for example, the filtration effect can be optimized by changing the height and spacing of the dots. The dot height is generally between 0.5-2mm, and the spacing is about 2-5mm to ensure the structural stability of the monomer during the pressing process. The overall dimensions of the filter element are 140mm in diameter, 245mm in length, and 5mm in material thickness. This design allows for full utilization of space, increasing the filtration area and thus improving filtration efficiency. The outer edge and inner ring of the filter element are sealed with adhesive to prevent oil from entering through unintended paths, ensuring the effectiveness of the filtration process. When the liquid to be filtered passes through the filter element, it first passes through the plant fiber layer, initially intercepting larger solid particles and suspended matter. Subsequently, the liquid continues to flow into the electrospinning layer, which further filters out tiny particles and fine impurities. The raised dot design on the filter element surface increases the filtration surface area and improves filtration efficiency. The entire process requires only one filtration to achieve a highly efficient purification effect.

[0042] In one specific embodiment, a large petrochemical company's lubricating oil regeneration workshop needs to efficiently filter the large volume of lubricating oil it uses to remove impurities such as particulate matter, moisture, and varnish. Traditional filtration methods often require multiple filtrations to achieve the desired purification effect, resulting in high energy consumption, long production cycles, and low production efficiency. Therefore, the company urgently needs an offline filter element capable of high-efficiency filtration in a single pass.

[0043] The offline filter element of this application, with its multi-layered cross structure, electrospun layer, and raised dot design, achieves highly efficient purification in a single filtration process, significantly reducing the need for multiple filtrations, lowering energy consumption and production costs, and improving production efficiency. Furthermore, the filter element's ease of maintenance and replaceability bring convenience to the company's daily operations.

[0044] The implementation principle of an offline filter element in this embodiment is as follows: Through a multi-layered cross-structure design, the filter element's dirt-holding capacity is significantly increased, reducing the need for multiple filtrations and improving production efficiency. The introduction of an electrospun layer further improves filtration accuracy, ensuring high-quality filtration. The raised dot design ensures the structural stability of the individual elements during manufacturing, avoiding the hassle of subsequent trimming. Overall, this embodiment provides a low-cost, high-efficiency offline filter element, significantly improving the problems existing in the prior art and possessing high practical value.

[0045] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An off-line filter cartridge characterized by: include: The filter element body includes multiple filter element layers. Each filter element layer is composed of two units. Each unit has a raised front side and a recessed back side. The filter element layer is a layered structure formed by bonding adjacent units in a vertically intersecting manner between their recessed surfaces. The layers are bonded together with the raised parts perpendicularly intersecting each other. An electrospinning layer is provided in the recessed area on the reverse side of the monomer.

2. The off-line filter cartridge of claim 1, wherein: The monomer is made from plant fiber material.

3. The off-line filter cartridge of claim 1 wherein: The electrospun layer is made of nylon material.

4. The offline filter element according to claim 1, characterized in that: The monomer has several protrusions on both sides to facilitate better dehydration and maintain structural stability during the monomer manufacturing process.

5. The off-line filter cartridge of claim 1, wherein: The filter element layer also includes an activated carbon layer located between the plant fiber layer and the electrospun layer.

6. The off-line filter cartridge of claim 1, wherein: The filter element layer has a spiral flow channel inside.

7. The off-line filter cartridge of claim 6, wherein: The spiral flow channel is composed of multiple corrugated wood fiber sheets with overlapping 90° orthogonal grain directions. The oil enters from the outside of the filter element and flows out from the inside.

8. The off-line filter cartridge of any of claims 1-7, wherein: The filter element has no fewer than 15 layers.

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