Reusable filter cap for air compressor

Abstract

The invention relates to the technical field of air compressor filters, in particular to a reusable filter cap for an air compressor, which comprises a filter cap with a disc-shaped structure, and the filter cap comprises an inner edge-covering ring, an outer edge-covering ring and a corrugated felt edge-covering filter disc, the outer edge-covering ring is clamped and matched with a shell port of a filter cartridge shell of the air compressor, and the outer edge-covering ring is clamped and matched with the shell port of the filter cartridge shell of the air compressor; during mounting, a lower port of the air inlet end cover of the air compressor is pressed on the upper surface of the outer edge covering ring; the inner edge covering ring is matched with the upper end of a core rod of a filter cartridge shell of the air compressor in an inserting manner, a screw rod in the center of the core rod extends out of the inner edge covering ring and is in threaded connection with a locking nut, and the locking nut is pressed on the upper surface of the inner edge covering ring; and the corrugated felt edge-covered filter disc is made of a metal material and can be flushed. Compared with a disposable filter cartridge, the filter cartridge has the advantages that frequent replacement is avoided, consumable cost and maintenance time are reduced, and solid waste is reduced; meanwhile, the disc-shaped structure is simpler than a cylindrical structure, materials are saved, and the durability of the product is guaranteed through the all-metal structure.

Description

Technical Field

[0001] This invention relates to the field of air compressor filter technology, specifically a reusable filter cap for air compressors. Background Technology

[0002] An air compressor is a core piece of equipment that provides pneumatic power. To ensure its normal operation and extend its service life, the intake air needs to be filtered. For example... Figure 5 As shown, most mainstream air compressors on the market currently use disposable filter cartridges 14 as their core filtration consumables. These disposable filter cartridges 14 have a cylindrical structure. Air enters the air compressor filter cartridge housing 10 through the air inlet 5 on the air compressor inlet end cover 6, and exits through the outlet 11 at the bottom of the housing 10 after passing through the disposable filter cartridge 14. These filter cartridges primarily use synthetic fibers (such as polyester and cellulose) as the filtration medium, intercepting particulate matter in the air through the fiber layer. With accumulated operating time, the filter cartridge gradually becomes clogged, leading to increased intake resistance (pressure drop). This not only increases the air compressor's energy consumption but can also, in severe cases, affect air production efficiency and the lifespan of the main unit, necessitating strict replacement according to the maintenance cycle. Existing technical solutions have significant drawbacks: First, these disposable filter cartridges are discarded entirely after their service life, generating continuous solid waste, which is neither environmentally friendly nor sustainable, resulting in high long-term operating costs for users. Second, frequent replacement operations themselves increase the manpower and time costs of equipment maintenance.

[0003] Therefore, there is an urgent need for a new type of reusable filter element for air compressors, which can provide an effective solution to the shortcomings of existing technologies. Summary of the Invention

[0004] The purpose of this invention is to provide a reusable filter cap for air compressors to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A reusable filter cap for an air compressor includes a filter cap with a disc-shaped structure, the filter cap comprising an inner edge ring, an outer edge ring, and a corrugated felt edge-wrapped filter sheet: The outer edge ring engages with the housing port of the air compressor filter cartridge housing, and during installation, the lower port of the air compressor inlet end cover is pressed onto the upper surface of the outer edge ring. The inner edge ring is inserted into the upper end of the core rod of the air compressor filter housing. The screw at the center of the core rod extends out of the inner edge ring and is threadedly connected to the locking nut. The locking nut is pressed onto the upper surface of the inner edge ring. The corrugated felt-edged filter sheet is made of metal and is washable.

[0006] Furthermore, the outer edging ring is made of aluminum.

[0007] Furthermore, the inner edging ring is made of aluminum.

[0008] Furthermore, the corrugated felt edge-wrapped filter sheet includes a protective net made of 3O4 stainless steel and a corrugated felt made of 3O4 stainless steel, with the corrugated felt fixed to the protective net.

[0009] Furthermore, the corrugated felt edge-wrapped filter has 32-35 wave counts and a wave height of 10mm.

[0010] Furthermore, the precision of the corrugated felt edge-wrapped filter is 15µm.

[0011] Compared with the prior art, the beneficial effects of the present invention are: This invention replaces the traditional cylindrical disposable filter cartridge with a disc-shaped reusable filter cap. During operation, air enters through the air inlet of the air compressor's inlet end cover, is filtered by the corrugated felt-edged filter sheet, and then the clean air enters the air compressor's filter cartridge housing, finally exiting from the outlet at the bottom of the housing. When the filter cap needs cleaning, simply unscrew the locking nut to remove the entire filter cap, rinse or blow away the corrugated felt-edged filter sheet to remove surface dust, and then reinstall it after drying. Compared to disposable filter cartridges, this invention avoids frequent replacements, reduces consumable costs and maintenance time, and minimizes solid waste. Furthermore, the disc-shaped structure is simpler than the cylindrical structure, saving materials, and the all-metal construction ensures product durability. Attached Figure Description

[0012] Figure 1 This is a top view of a reusable filter cap for an air compressor; Figure 2 for Figure 1 Cross-sectional view at point AA; Figure 3 This is a three-dimensional structural diagram of a reusable filter cap for an air compressor; Figure 4 This is a schematic diagram of the installation of a reusable filter cap for an air compressor; Figure 5 This is a schematic diagram of the installation of an existing disposable filter cartridge.

[0013] In the diagram: 1. Outer edge ring; 2. Corrugated felt edge-wrapped filter sheet; 3. Inner edge ring; 4. Filter cap; 5. Air inlet; 6. Air compressor air inlet end cover; 7. Lower port; 8. Locking nut; 9. Housing port; 10. Air compressor filter cartridge housing; 12. Screw; 13. Core rod; 14. Disposable filter cartridge. Detailed Implementation

[0014] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0015] Example 1 Reference Figures 1 to 4 This embodiment provides a reusable filter cap for an air compressor. The filtration device includes a filter cap 4 with a disc-shaped structure, which consists of an inner edge ring 3, an outer edge ring 1, and a corrugated felt edge filter sheet 2 connecting the two.

[0016] The outer edge ring 1 is made of aluminum, and its outer edge is engaged with the housing port 9 of the air compressor filter housing 10. During installation, the lower port 7 of the air compressor inlet cover 6 is pressed down onto the upper surface of the outer edge ring 1 to achieve external sealing and fixation.

[0017] The inner edging ring 3 is also made of aluminum, and its inner edge is inserted into the upper end of the core rod 13 in the center of the air compressor filter housing 10. The screw 12 at the center of the core rod 13 extends upward through the inner edging ring 3 and is threadedly connected by the locking nut 8. Tightening the locking nut 8 presses its lower end face against the upper surface of the inner edging ring 3, thus firmly fixing the inside of the filter cap 4.

[0018] The corrugated felt-edged filter element 2 is the core component of the filter cap 4, enabling its filtration function, and is made of metal. Specifically, the filter element includes a protective mesh made of 304 stainless steel and a corrugated felt made of 304 stainless steel, with the corrugated felt fixed to the protective mesh by welding. The corrugated felt-edged filter element 2 has 32-35 corrugations, a corrugation height of 10mm, and a filtration accuracy of 15μm. This all-metal structure allows the corrugated felt-edged filter element 2 to withstand cleaning operations such as washing and purging, enabling repeated use.

[0019] Working principle: This embodiment uses a traditional cylindrical disposable filter cartridge 14 (such as...) Figure 5The filter cap 4 (as shown) is replaced with a disc-shaped reusable filter cap 4, which changes its working principle. Air enters through the air inlet 5 of the air compressor inlet end cover 6, is filtered by the corrugated felt-edged filter sheet 2, and then the clean air enters the air compressor filter cartridge housing 10, finally exiting from the air outlet 11 at the bottom of the housing. When the filter cap 4 needs cleaning, the entire filter cap 4 can be removed by unscrewing the locking nut 8, and the corrugated felt-edged filter sheet 2 can be rinsed or blown to remove surface dust. After drying, it can be reinstalled for use. Compared with the disposable filter cartridge 14, the reusable filter cap 4 provided in this embodiment avoids frequent replacement, reduces consumable costs and maintenance time, and reduces solid waste. At the same time, the disc-shaped structure is simpler than the cylindrical structure, saves materials, and the all-metal structure ensures the durability of the product.

[0020] Example 2 This embodiment has a structure that is basically the same as that of Embodiment 1, except that the parameters of the corrugated felt edge-wrapped filter 2 have been optimized.

[0021] In this embodiment, the corrugated felt-edged filter 2 preferably has 33 corrugations and a corrugation height of 10 mm. This parameter combination is determined under the condition of ensuring that the filtration area and the intake resistance are in a balanced state. After testing, the filter cap 4 with this parameter can provide a low initial pressure drop while meeting the filtration accuracy of 15 μm, which helps to reduce the energy consumption of the air compressor.

[0022] Example 3 This embodiment has a structure that is basically the same as that of embodiment 1, except that the parameters of the corrugated felt edge-wrapped filter 2 have been optimized in another way.

[0023] In this embodiment, the corrugated felt edge-wrapped filter 2 preferably has 35 wavenumbers and a wave height of 10 mm. Increasing the wavenumber means obtaining a larger effective filtration area with the same projected area. This design is suitable for working environments with high dust concentrations, can extend the single-use cycle, reduce the cleaning frequency, and ensure a smoother increase in pressure drop when the dust holding capacity increases.

Claims

1. A reusable filter cap for an air compressor, characterized in that, The filter cap (4) has a disc-shaped structure and includes an inner edge ring (3), an outer edge ring (1), and a corrugated felt edged filter sheet (2). The outer edge ring (1) is engaged with the housing port (9) of the air compressor filter housing (10), and during installation, the lower port (7) of the air compressor inlet end cover (6) is pressed onto the upper surface of the outer edge ring (1). The inner edge ring (3) is inserted into the upper end of the core rod (13) of the air compressor filter housing (10). The screw (12) at the center of the core rod (13) extends out of the inner edge ring (3) and is threadedly connected to the locking nut (8). The locking nut (8) is pressed on the upper surface of the inner edge ring (3). The corrugated felt edge-wrapped filter (2) is made of metal and is washable.

2. The reusable filter cap for an air compressor according to claim 1, characterized in that: The outer edging ring (1) is made of aluminum.

3. A reusable filter cap for an air compressor according to claim 1, characterized in that: The inner edging ring (3) is made of aluminum.

4. A reusable filter cap for an air compressor according to claim 1, characterized in that: The corrugated felt edge-wrapped filter sheet (2) includes a protective net made of 3O4 stainless steel and a corrugated felt made of 3O4 stainless steel, with the corrugated felt fixed on the protective net.

5. A reusable filter cap for an air compressor according to claim 1, characterized in that: The corrugated felt edge-wrapped filter (2) has 32-35 waves and a wave height of 10mm.

6. A reusable filter cap for an air compressor according to claim 1, characterized in that: The precision of the corrugated felt edge-wrapped filter (2) is 15um.

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