Diesel engine air filter with filter element convenient to replace

Abstract

The utility model relates to the technical field of air filters, and discloses a diesel engine air filter convenient for replacing a filter element, which solves the problem of poor use effect of the existing air filter, and comprises a first filter mechanism and a second filter mechanism, the first filtering mechanism is composed of a filter element sleeve shell, an air inlet sleeve shell, a limiting pressing assembly, a coarse-hole honeycomb filter element and a fine-hole honeycomb filter element, the limiting pressing assembly, the coarse-hole honeycomb filter element and the fine-hole honeycomb filter element are all connected between the filter element sleeve shell and the air inlet sleeve shell, and the second filtering mechanism is composed of a mounting shell, an oil storage bottom shell, an air guide pipe and an exhaust pipe. The oil storage bottom shell is connected to the bottom end of the installation shell, the air guide pipe penetrates through the installation shell and is fixedly connected with the installation shell, an air channel is formed between the air guide pipe and the installation shell, and the exhaust pipe is connected to the middle of the side edge of the installation shell. By means of the diesel engine air filter, filter element filtering and oil bath filtering can be combined, and the filtering effect is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of air filters, and specifically relates to a diesel engine air filter facilitating the replacement of a filter element. Background Art

[0002] The diesel engine air filter is an essential component of a diesel engine, used for filtering the intake air to ensure the cleanliness of the intake air.

[0003] Currently, there are generally two types of diesel engine air filters on the market. One is to only use a honeycomb filter element to filter air. This type of air filter has limited filtering effect on impurities in the air, and the replacement frequency of the filter element is relatively high. The other is a wet-dry combined air filter, which consists of two parts, the upper part is for primary filtration after fresh air enters, and the lower part is for the air initially filtered in the upper part to enter the diesel engine after being re-filtered through an oil bath. However, for this type of wet-dry combined air filter, the primary filtration structure in the upper part is generally through the design of the intake air passage for primary filtration, and the filtering effect on impurities in the air is limited. This results in most impurities needing to be filtered through the oil bath, causing the engine oil in the oil bath chamber to need to be replaced frequently and the use effect is not good. Therefore, this application integrates and improves the existing two types of air filters, and proposes a diesel engine air filter facilitating the replacement of a filter element. Summary of the Utility Model

[0004] In view of the above situation, to overcome the defects of the prior art, the utility model provides a diesel engine air filter facilitating the replacement of a filter element, effectively solving the problem of poor use effect of the existing air filter.

[0005] To achieve the above object, the utility model provides the following technical solution: A diesel engine air filter facilitating the replacement of a filter element, including a first filtering mechanism and a second filtering mechanism. The second filtering mechanism is connected to the bottom end of the first filtering mechanism. The first filtering mechanism is composed of a filter element housing, an intake housing, a limit pressing component, a coarse pore honeycomb filter element, and a fine pore honeycomb filter element. The intake housing is connected to the top end of the filter element housing. The limit pressing component, the coarse pore honeycomb filter element, and the fine pore honeycomb filter element are all connected between the filter element housing and the intake housing. The coarse pore honeycomb filter element is located at the top of the fine pore honeycomb filter element, and the limit pressing component is located at the top of the coarse pore honeycomb filter element. The second filtering mechanism is composed of an installation housing, an oil storage bottom shell, a guide pipe, and an exhaust pipe. The oil storage bottom shell is connected to the bottom end of the installation housing. The guide pipe penetrates through the installation housing and is fixedly connected thereto. The top end of the guide pipe is connected to the filter element housing, and the bottom end of the guide pipe extends into the interior of the oil storage bottom shell. An air passage is formed between the guide pipe and the installation housing. The exhaust pipe is fixedly connected to the middle position on the side of the installation housing.

[0006] Preferably, an exhaust through hole connected to the air guide pipe is provided at the middle position of the bottom end of the filter element housing, an air intake channel is provided at the side of the inner bottom end of the air intake housing, and the filter element housing and the air intake housing are of a threaded connection structure.

[0007] Preferably, the limiting and pressing assembly is composed of a pipe body and a disc body. The disc body is fixedly connected to the bottom end of the pipe body, and a plurality of hollow grooves are provided on the disc body.

[0008] Preferably, an annular buckle groove is provided at the bottom end of the side of the installation housing, and a flange plate is fixedly provided at one end of the exhaust pipe away from the installation housing.

[0009] Preferably, the oil storage bottom shell is of a transparent structure, and a plurality of spring buckle mounting seats are fixedly provided at the top end of the side of the oil storage bottom shell.

[0010] Preferably, an annular air intake isolation net is provided at the bottom end inside the air intake channel, and the annular air intake isolation net and the air intake housing are of a snap connection structure.

[0011] Preferably, a splash-proof filtering assembly is provided inside the oil storage bottom shell. The splash-proof filtering assembly is composed of an annular honeycomb filter element and a metal gasket. The metal gasket is connected to the middle position of the top end of the annular honeycomb filter element. The annular honeycomb filter element and the metal gasket are both sleeved on the air guide pipe, and a limiting spring matching the metal gasket is sleeved on the air guide pipe.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] (1) During operation, by providing a first filtering mechanism composed of a filter element housing, an air intake housing, a limiting and pressing assembly, a coarse-pore honeycomb filter element, and a fine-pore honeycomb filter element, pre-filtration of air can be achieved through the coarse-pore honeycomb filter element and the fine-pore honeycomb filter element, most impurities in the air can be filtered, the filtering effect can be improved, and at the same time, it is convenient to disassemble, facilitating the replacement of the coarse-pore honeycomb filter element and the fine-pore honeycomb filter element;

[0014] (2) By providing a second filtering mechanism composed of an installation housing, an oil storage bottom shell, an air guide pipe, and an exhaust pipe, the pre-filtered air can be finely filtered by means of an oil bath, further improving the air filtering effect, ensuring the cleanliness of the intake air, and at the same time being able to extend the cycle of engine oil replacement;

[0015] (3) By providing a splash-proof filtering assembly composed of an annular honeycomb filter element and a metal gasket, it is possible to prevent the airflow from driving the engine oil to splash, thereby avoiding the waste of engine oil caused by the engine oil entering the engine. Description of the Drawings

[0016] The accompanying drawings are used to provide a further understanding of the present utility model and form a part of the specification. Together with the embodiments of the present utility model, they are used to explain the present utility model and do not constitute a limitation to the present utility model.

[0017] In the accompanying drawings:

[0018] Figure 1 It is a schematic structural diagram of a diesel engine air filter for facilitating the replacement of a filter element according to the present utility model;

[0019] Figure 2 It is an exploded view of the first filtering mechanism according to the present utility model;

[0020] Figure 3 It is a schematic structural diagram of an air intake housing according to the present utility model;

[0021] Figure 4 It is one of the schematic structural diagrams of the first filtering mechanism according to the present utility model;

[0022] Figure 5 It is the second of the schematic structural diagrams of the first filtering mechanism according to the present utility model;

[0023] Figure 6 It is a schematic structural diagram of the connection structure between the installation housing and the air duct according to the present utility model;

[0024] Figure 7 It is a schematic structural diagram of an oil storage bottom shell according to the present utility model;

[0025] Figure 8 It is a schematic structural diagram of a splash-proof filtering assembly according to the present utility model;

[0026] In the figure: 1. First filtering mechanism; 2. Second filtering mechanism; 3. Filter element housing; 4. Air intake housing; 5. Limit pressing assembly; 6. Coarse pore honeycomb filter element; 7. Fine pore honeycomb filter element; 8. Installation housing; 9. Oil storage bottom shell; 10. Air duct; 11. Exhaust pipe; 12. Air passage; 13. Exhaust through hole; 14. Air intake passage; 15. Pipe body; 16. Disk body; 17. Hollow groove; 18. Annular snap groove; 19. Flange plate; 20. Spring snap mounting seat; 21. Annular air intake isolation net; 22. Splash-proof filtering assembly; 23. Annular honeycomb filter core; 24. Metal gasket; 25. Limit spring. Specific embodiments

[0027] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments; based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0028] It is given by Figures 1 to 7 a diesel engine air filter that is convenient for replacing the filter element, including a first filtering mechanism 1 and a second filtering mechanism 2. The second filtering mechanism 2 is connected to the bottom end of the first filtering mechanism 1. The first filtering mechanism 1 is composed of a filter element housing 3, an air inlet housing 4, a limit pressing assembly 5, a coarse pore honeycomb filter element 6, and a fine pore honeycomb filter element 7. The air inlet housing 4 is connected to the top end of the filter element housing 3. The limit pressing assembly 5, the coarse pore honeycomb filter element 6, and the fine pore honeycomb filter element 7 are all connected between the filter element housing 3 and the air inlet housing 4. The coarse pore honeycomb filter element 6 is located at the top of the fine pore honeycomb filter element 7, and the limit pressing assembly 5 is located at the top of the coarse pore honeycomb filter element 6. The second filtering mechanism 2 is composed of an installation housing 8, an oil storage bottom shell 9, an air guide pipe 10, and an exhaust pipe 11. The oil storage bottom shell 9 is connected to the bottom end of the installation housing 8. The air guide pipe 10 penetrates through the installation housing 8 and is fixedly connected thereto. The top end of the air guide pipe 10 is connected to the filter element housing 3, and the bottom end of the air guide pipe 10 extends into the interior of the oil storage bottom shell 9. An air passage 12 is formed between the air guide pipe 10 and the installation housing 8. The exhaust pipe 11 is fixedly connected to the middle position on the side of the installation housing 8;

[0029] During use, air enters the interior of the filter element housing 3 through the air inlet housing 4. Through the air inlet passage inside the air inlet housing 4 and the action of the coarse pore honeycomb filter element 6 and the fine pore honeycomb filter element 7, pre-filtration of the air is achieved, and most of the impurities in the air can be filtered out. The pre-filtered air enters the interior of the air guide pipe 10, enters the interior of the oil storage bottom shell 9 through the air guide pipe 10, and oil bath filtration of the air is achieved through the engine oil inside the oil storage bottom shell 9, thereby improving the filtration effect. The filtered air escapes from the engine oil, then enters the air passage 12, and enters the exhaust pipe 11 along the air passage 12, and finally enters the interior of the diesel engine through the exhaust pipe 11;

[0030] It is given by Figures 2 to 7 an exhaust through hole 13 connected to the air guide pipe 10 is opened at the middle position of the bottom end of the filter element housing 3. An air intake passage 14 is opened at the side of the bottom end inside the air inlet housing 4. The filter element housing 3 and the air inlet housing 4 are of a threaded connection structure. The limit pressing assembly 5 is composed of a pipe body 15 and a disc body 16. The disc body 16 is fixedly connected to the bottom end of the pipe body 15. A plurality of hollow grooves 17 are opened on the disc body 16. An annular snap groove 18 is opened at the bottom end of the side of the installation housing 8. A flange plate 19 is fixedly arranged at the end of the exhaust pipe 11 away from the installation housing 8. The oil storage bottom shell 9 is of a transparent structure, and a plurality of spring buckle mounting seats 20 are fixedly arranged at the top end of the side of the oil storage bottom shell 9;

[0031] Intake air can be achieved through the air intake duct 14. By setting the filter element housing 3 and the intake housing 4 to be in a threaded connection structure, the convenience of installation and disassembly can be improved, thus facilitating the replacement of the coarse-pore honeycomb filter element 6 and the fine-pore honeycomb filter element 7. Through the limit pressing assembly 5 composed of the pipe body 15 and the disc body 16, the coarse-pore honeycomb filter element 6 and the fine-pore honeycomb filter element 7 can be limited and pressed, improving stability. Through the setting of the annular buckle groove 18 and the spring buckle mounting seat 20, the installation housing 8 and the oil storage bottom shell 9 can be connected by installing spring buckles, thus improving the convenience of oil replacement in the later stage;

[0032] given by Figures 2 to 8 At the bottom end inside the air intake duct 14, an annular intake isolation net 21 is provided. The annular intake isolation net 21 and the intake housing 4 are in a snap connection structure;

[0033] Through the annular intake isolation net 21, pre-filtration of the intake air can be achieved, preventing impurities from entering the interior of the intake housing 4;

[0034] Inside the oil storage bottom shell 9, a splash-proof filtering component 22 is provided. The splash-proof filtering component 22 is composed of an annular honeycomb filter core 23 and a metal washer 24. The metal washer 24 is connected to the middle position at the top end of the annular honeycomb filter core 23. Both the annular honeycomb filter core 23 and the metal washer 24 are sleeved on the air guide pipe 10, and a limit spring 25 matching the metal washer 24 is sleeved on the air guide pipe 10;

[0035] Through the annular honeycomb filter core 23, the splashing of engine oil driven by the air flow can be avoided, thus preventing engine oil from entering the engine interior and causing waste of engine oil. Through the limit spring 25, the annular honeycomb filter core 23 can be limited, and through the metal washer 24, the limit spring 25 can be supported, improving stability.

[0036] During operation, by setting the first filtering mechanism composed of the filter element housing, the intake housing, the limit pressing assembly, the coarse-pore honeycomb filter element and the fine-pore honeycomb filter element, pre-filtration of the air can be achieved through the coarse-pore honeycomb filter element and the fine-pore honeycomb filter element. Most of the impurities in the air can be filtered, improving the filtering effect. At the same time, it is easy to disassemble, facilitating the replacement of the coarse-pore honeycomb filter element and the fine-pore honeycomb filter element; by setting the second filtering mechanism composed of the installation housing, the oil storage bottom shell, the air guide pipe and the exhaust pipe, the pre-filtered air can be finely filtered by means of an oil bath, further improving the air filtering effect, ensuring the cleanliness of the intake air, and at the same time, the cycle of engine oil replacement can be extended. By setting the splash-proof filtering component composed of the annular honeycomb filter core and the metal washer, the splashing of engine oil driven by the air flow can be avoided, thus preventing engine oil from entering the engine interior and causing waste of engine oil.

Claims

1. A diesel engine air filter with easy filter element replacement, comprising a first filter mechanism (1) and a second filter mechanism (2), characterized in that: The second filtering mechanism (2) is connected to the bottom end of the first filtering mechanism (1); the first filtering mechanism (1) is composed of a filter element casing (3), an air intake casing (4), a position limiting and pressing assembly (5), a coarse-pore honeycomb filter element (6) and a fine-pore honeycomb filter element (7); the air intake casing (4) is connected to the top end of the filter element casing (3); the position limiting and pressing assembly (5), the coarse-pore honeycomb filter element (6) and the fine-pore honeycomb filter element (7) are all connected between the filter element casing (3) and the air intake casing (4); the coarse-pore honeycomb filter element (6) is located at the top end of the fine-pore honeycomb filter element (7); the position limiting and pressing assembly (5) is located at the top end of the coarse-pore honeycomb filter element (7); At the top end of the filter element (6), the second filtering mechanism (2) is composed of a mounting shell (8), an oil storage sump (9), an air guide pipe (10) and an exhaust pipe (11); the oil storage sump (9) is connected to the bottom end of the mounting shell (8); the air guide pipe (10) is inserted into the mounting shell (8) and is fixedly connected thereto; the top end of the air guide pipe (10) is connected to the filter element casing (3); the bottom end of the air guide pipe (10) extends to the inside of the oil storage sump (9); an air passage (12) is formed between the air guide pipe (10) and the mounting shell (8); and the exhaust pipe (11) is fixedly connected to the middle position of the side of the mounting shell (8).

2. A diesel engine air filter with easy filter element replacement according to claim 1, characterized in that: An exhaust through hole (13) connected to the air guide pipe (10) is provided in the middle of the bottom of the filter element casing (3), an air intake passage (14) is provided on the side of the bottom of the air intake casing (4), and the filter element casing (3) and the air intake casing (4) are threadedly connected.

3. A diesel engine air filter with easy filter element replacement according to claim 1, characterized in that: The position limiting and pressing assembly (5) is composed of a tube body (15) and a disc body (16); the disc body (16) is fixedly connected to the bottom end of the tube body (15); and a plurality of hollow grooves (17) are formed on the disc body (16).

4. A diesel engine air filter with easy filter element replacement according to claim 1, characterized in that: An annular buckle groove (18) is provided at the bottom end of the side of the mounting shell (8), and a flange plate (19) is fixedly provided at one end of the exhaust pipe (11) away from the mounting shell (8).

5. A diesel engine air filter with easy filter element replacement according to claim 1, characterized in that: The oil storage sump (9) is a transparent structure, and a plurality of spring buckle mounting supports (20) are fixedly arranged at the top end of the side surface of the oil storage sump (9).

6. A diesel engine air filter with easy filter element replacement according to claim 2, characterized in that: An annular air intake isolation net (21) is provided at the bottom end of the air intake passage (14), and a snap-fit ​​connection structure is formed between the annular air intake isolation net (21) and the air intake casing (4).

7. A diesel engine air filter with easy filter element replacement according to claim 1, characterized in that: An anti-sputtering filter assembly (22) is arranged inside the oil storage sump (9), the anti-sputtering filter assembly (22) being composed of an annular honeycomb filter element (23) and a metal gasket (24), the metal gasket (24) being connected to the middle position of the top end of the annular honeycomb filter element (23), the annular honeycomb filter element (23) and the metal gasket (24) being sleeved on the air guide tube (10), and a limit spring (25) matching the metal gasket (24) being sleeved on the air guide tube (10).

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