Combined filter cartridge

Abstract

The utility model discloses a combined filter cartridge which comprises a dust filter cartridge, an upper mounting hole and a lower mounting hole, the upper mounting hole and the lower mounting hole are formed in the dust filter cartridge, and a re-filtering mechanism is arranged in the dust filter cartridge; the re-filtering mechanism comprises a re-filtering cylinder, a mounting annular clamping groove is formed in the inner side wall of the lower mounting hole, the outer side wall of the re-filtering cylinder is in sliding connection with the inner side walls of the upper mounting hole and the mounting annular clamping groove, and a limiting annular clamping groove is formed in the inner side wall of the upper mounting hole. According to the utility model, under the interaction of the dust filtering cylinder, the upper mounting hole, the lower mounting hole and the heavy filtering mechanism, the filtering precision can be effectively improved through a two-stage filtering mode of the dust filtering cylinder and the heavy filtering cylinder, impurities such as dust in the air are intercepted outside as much as possible, and the possibility that the dust enters a diesel engine is reduced; the abnormal abrasion risk of the diesel engine is greatly reduced, normal operation of the diesel engine is protected, the service life is prolonged, the device is convenient to install and replace, and reliable guarantee is provided for stable operation of the diesel engine in a severe environment.

Description

Technical Field

[0001] The utility model relates to the technical field of filter cartridges, in particular to a combined filter cartridge. Background Art

[0002] During the operation of a diesel engine, the dust filter is an indispensable component. It is mainly installed in the diesel engine's air intake system to filter the air entering the diesel engine, removing dust and impurities in the air, ensuring that the air entering the diesel engine is relatively clean, thereby protecting the normal operation of the diesel engine and extending its service life.

[0003] The existing diesel engine dust filter cartridge currently uses a single-stage dry paper air filter element. In the harsh on-site environment with a lot of dust, this dust filter element cannot filter out the dust in the air completely. A large amount of dust will enter the diesel engine, causing abnormal wear of the diesel engine. Therefore, we proposed a combined filter cartridge to solve the above problems. Utility Model Content

[0004] The purpose of the present invention is to overcome the deficiencies in the above-mentioned background technology and to propose a combined filter cartridge.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] The combined filter cartridge comprises a dust filter cartridge and an upper mounting hole and a lower mounting hole provided on the dust filter cartridge, wherein a re-filtration mechanism is provided in the dust filter cartridge;

[0007] The heavy filtration mechanism includes a heavy filter cartridge, the inner wall of the lower mounting hole is provided with a mounting annular groove, the outer wall of the heavy filter cartridge is slidingly connected to the upper mounting hole and the inner wall of the mounting annular groove, the inner wall of the upper mounting hole is provided with a limiting annular groove, and the inner wall of the limiting annular groove is threadedly sleeved with a sealing cover with a hole.

[0008] Preferably, a limiting tube is fixed on the bottom of the heavy filter cartridge, a bottom sealing gasket is slidably sleeved on the limiting tube, and a top sealing gasket is slidably sleeved on the inner side wall of the limiting annular groove.

[0009] Preferably, an annular groove is provided at the bottom of the limiting ring groove, and a sealing ring is slidably sleeved on the inner side wall of the annular groove.

[0010] Preferably, the outer wall of the heavy filter cartridge is threadedly connected to the inner wall of the upper mounting hole, the inner wall of the upper mounting hole is provided with a first thread groove, and the external thread on the outer wall of the heavy filter cartridge is threadedly connected to the inner wall of the first thread groove.

[0011] Preferably, a second thread groove is provided on the inner side wall of the limiting annular groove, and the external thread on the perforated sealing cover is threadedly connected to the inner side wall of the second thread groove.

[0012] Preferably, the dust filter cartridge, the upper mounting hole, the lower mounting hole, the mounting annular groove and the limiting annular groove are coaxially arranged.

[0013] Preferably, the outer side wall of the limiting tube and the inner side wall of the lower mounting hole are slidably connected.

[0014] Preferably, the filtering accuracy of the heavy filter cartridge is greater than that of the dust filter cartridge.

[0015] The beneficial effects of the utility model are:

[0016] Under the interaction of the dust filter cartridge, the upper mounting hole, the lower mounting hole and the heavy filter mechanism, the two-stage filtration method of the dust filter cartridge and the heavy filter cartridge can effectively improve the filtration accuracy, intercept dust and other impurities in the air as much as possible, reduce the possibility of dust entering the diesel engine, greatly reduce the risk of abnormal wear of the diesel engine, protect the normal operation of the diesel engine, and extend its service life. The device is easy to install and replace, providing reliable guarantee for the stable operation of the diesel engine in harsh environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the combined filter cartridge proposed in the utility model;

[0018] Figure 2 This is a top view of the dust filter cartridge in the combined filter cartridge proposed in the present invention;

[0019] Figure 3 This is a top view of the heavy filter cartridge of the combined filter cartridge proposed in the present invention.

[0020] In the figure: 1. Dust filter cartridge; 2. Upper mounting hole; 3. Lower mounting hole; 4. Heavy filter cartridge; 5. Mounting annular slot; 6. Limiting annular slot; 7. Sealing cover with hole; 8. Limiting tube; 9. Bottom sealing gasket; 10. Top sealing gasket; 11. Annular groove; 12. Sealing ring. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0022] Reference Figure 1-3 , a combined filter cartridge includes a dust filter cartridge 1 and an upper mounting hole 2 and a lower mounting hole 3 opened on the dust filter cartridge 1, and a heavy filtering mechanism is provided in the dust filter cartridge 1;

[0023] like Figure 1 and Figure 2As shown, the heavy filtration mechanism includes a heavy filter cartridge 4, an inner wall of the lower mounting hole 3 is provided with an installation annular groove 5, the outer wall of the heavy filter cartridge 4 is slidingly connected to the upper mounting hole 2 and the inner wall of the installation annular groove 5, the inner wall of the upper mounting hole 2 is provided with a limiting annular groove 6, and the inner wall of the limiting annular groove 6 is threadedly sleeved with a sealing cover with a hole 7.

[0024] To further illustrate, the heavy filter cartridge 4 can filter the air filtered by the dust filter cartridge 1 again, making the filtered air cleaner.

[0025] It is further explained that the heavy filter cartridge 4 can be easily installed and disassembled, and the heavy filter cartridge 4 can be easily cleaned or replaced, thereby improving the maintenance convenience of the filter cartridge. The sliding connection method makes the installation position of the heavy filter cartridge 4 more stable, ensuring the reliability of the filtration process. The perforated sealing cover 7 can prevent dust and other impurities from leaking from the top while ensuring air circulation, thereby improving the filtration effect.

[0026] like Figure 1 As shown, a limiting tube 8 is fixed at the bottom of the heavy filter cartridge 4, a bottom sealing gasket ring 9 is slidably sleeved on the limiting tube 8, and a top sealing gasket ring 10 is slidably sleeved on the inner side wall of the limiting annular groove 6.

[0027] It is further explained that the sealing performance at the upper and lower ends of the heavy filter cartridge 4 is enhanced to prevent unfiltered air from leaking from the connection, further improving the filtering effect. The sliding sleeve sealing gasket ring can adapt to a certain degree of size change, ensuring good sealing performance under different working conditions.

[0028] like Figure 1 and Figure 2 As shown, an annular groove 11 is provided at the bottom of the limiting ring groove, and a sealing ring 12 is slidably sleeved on the inner side wall of the annular groove 11.

[0029] It is further explained that the sealing between the limiting annular groove 6 and the perforated sealing cover 7 is further enhanced to prevent impurities from entering or leaking, thereby ensuring the overall performance of the filtration system. The sliding sleeve sealing ring 12 makes the seal more reliable and is also easy to install and replace.

[0030] like Figure 1 As shown, the outer wall of the heavy filter cartridge 4 is threadedly connected to the inner wall of the upper mounting hole 2, the inner wall of the upper mounting hole 2 is provided with a first thread groove, and the external thread on the outer wall of the heavy filter cartridge 4 is threadedly connected to the inner wall of the first thread groove.

[0031] It is further explained that the threaded connection provides a more secure connection method, ensuring that the heavy filter cartridge 4 will not loosen or fall off during operation, and is easy to install and disassemble. Users can choose heavy filter cartridges 4 of different specifications for replacement as needed, which improves applicability.

[0032] like Figure 1As shown, a second thread groove is provided on the inner side wall of the limiting annular groove 6, and the external thread on the perforated sealing cover 7 is threadedly connected to the inner side wall of the second thread groove.

[0033] It is further explained that the installation of the perforated sealing cover 7 is ensured to be firm and will not become loose due to vibration or pressure changes, so that the sealing cover can be opened and closed conveniently, and the heavy filter cartridge 4 can be maintained and cleaned.

[0034] like Figure 1 As shown, the dust filter cartridge 1, the upper mounting hole 2, the lower mounting hole 3, the mounting annular groove 5 and the limiting annular groove 6 are coaxially arranged.

[0035] It is further explained that the smooth flow of air in the dust filter cartridge 1 is ensured, the resistance of the air flow is reduced, the filtering efficiency is improved, the structure of the dust filter cartridge 1 is more regular, and it is easy to install and use, while also improving the aesthetics of the dust filter cartridge 1.

[0036] like Figure 1 As shown, the outer wall of the limiting tube 8 and the inner wall of the lower mounting hole 3 are slidably connected.

[0037] It is further explained that additional support and guidance are provided for the heavy filter cartridge 4 to ensure that the heavy filter cartridge 4 maintains a stable position during installation and use. The sliding connection method makes the installation of the heavy filter cartridge 4 more convenient and quick, thereby improving work efficiency.

[0038] The filtering accuracy of the heavy filter cartridge 4 is greater than the filtering accuracy of the dust filter cartridge 1.

[0039] To further explain, the purpose of this setting is that the heavy filter cartridge 4 can perform secondary fine filtration on the air filtered by the dust filter cartridge 1, so that the filtered air can be cleaner. The filtration accuracy of the dust filter cartridge 1 is 10-20 microns, which is mainly used to filter out dust particles visible to the naked eye in the air, while the filtration accuracy of the heavy filter cartridge 4 can reach 1-5 microns, which is used to capture those finer particles that have a greater impact on air quality.

[0040] The functional principle of this utility model can be explained through the following operation modes:

[0041] 1. Install the filter cartridge

[0042] Align the outer wall of the heavy filter cartridge 4 with the upper mounting hole 2 of the dust filter cartridge 1, and gently insert it so that it slides along the upper mounting hole 2 and the inner wall of the mounting annular groove 5 until the heavy filter cartridge 4 is installed in place.

[0043] Pick up the perforated sealing cover 7, align it with the limiting annular groove 6 of the dust filter cartridge 1, rotate the sealing cover so that the external thread on it is threadedly connected with the second thread groove on the inner wall of the limiting annular groove 6, and tighten the sealing cover to ensure a good seal.

[0044] 2. Usage process

[0045] Install the combined filter cartridge on the corresponding filter equipment of the diesel engine, ensure that the connection is firm and sealed, turn on the filter equipment, and let the air or fluid containing impurities enter the filter cartridge from one end of the dust filter cartridge 1. The air or fluid will first be preliminarily filtered through the dust filter cartridge 1 to remove larger particles of impurities.

[0046] The air or fluid that has undergone preliminary filtration then enters the heavy filter cartridge 4, where it undergoes finer filtration to remove tiny particles of impurities. The filtered clean air or fluid flows out from the other end of the filter cartridge and enters subsequent equipment or is discharged into the environment.

[0047] 3. Replacement or maintenance

[0048] When it is found that the filtering effect has declined or maintenance is required, turn off the filtering equipment, rotate the perforated sealing cover 7, unscrew it from the limiting annular groove 6 of the dust filter cartridge 1, gently lift up the heavy filter cartridge 4, and slide it out from the upper mounting hole 2 and the mounting annular groove 5 of the dust filter cartridge 1, clean the heavy filter cartridge 4 or replace it with a new one. If necessary, check and replace the sealing components such as the bottom sealing gasket 9, the top sealing gasket 10 and the sealing ring 12 to ensure good sealing performance, reinstall the heavy filter cartridge 4 and the perforated sealing cover 7 according to the installation steps, and then turn on the filtering equipment to continue using it.

[0049] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. Combined filter cartridge, characterized in that: It comprises a dust filter cartridge (1) and an upper mounting hole (2) and a lower mounting hole (3) provided on the dust filter cartridge (1); a re-filtering mechanism is provided in the dust filter cartridge (1); The heavy filtration mechanism comprises a heavy filter cartridge (4), an inner wall of the lower mounting hole (3) is provided with an annular mounting groove (5), the outer wall of the heavy filter cartridge (4) is slidably connected to the upper mounting hole (2) and the inner wall of the annular mounting groove (5), the inner wall of the upper mounting hole (2) is provided with a limiting annular groove (6), and the inner wall of the limiting annular groove (6) is threadedly sleeved with a sealing cover with a hole (7).

2. The combined filter cartridge according to claim 1, characterized in that: A limiting tube (8) is fixed at the bottom of the heavy filter cartridge (4), a bottom sealing ring (9) is slidably sleeved on the limiting tube (8), and a top sealing ring (10) is slidably sleeved on the inner side wall of the limiting annular groove (6).

3. The combined filter cartridge according to claim 1, characterized in that: An annular groove (11) is provided at the bottom of the limiting annular groove, and a sealing ring (12) is slidably sleeved on the inner side wall of the annular groove (11).

4. The combined filter cartridge according to claim 1, characterized in that: The outer wall of the heavy filter cartridge (4) is threadedly connected to the inner wall of the upper mounting hole (2); the inner wall of the upper mounting hole (2) is provided with a first thread groove; the external thread on the outer wall of the heavy filter cartridge (4) is threadedly connected to the inner wall of the first thread groove.

5. The combined filter cartridge according to claim 1, characterized in that: A second thread groove is provided on the inner side wall of the limiting annular groove (6), and the external thread on the perforated sealing cover (7) is threadedly connected to the inner side wall of the second thread groove.

6. The combined filter cartridge according to claim 1, characterized in that: The dust filter cartridge (1), the upper mounting hole (2), the lower mounting hole (3), the mounting annular groove (5) and the limiting annular groove (6) are coaxially arranged.

7. The combined filter cartridge according to claim 2, characterized in that: The outer side wall of the limiting tube (8) and the inner side wall of the lower mounting hole (3) are slidably connected.

8. The combined filter cartridge according to claim 1, characterized in that: The filtering accuracy of the heavy filter cartridge (4) is greater than the filtering accuracy of the dust filter cartridge (1).

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