Pre-filter mounting structure and pre-filter

Abstract

The mounting structure comprises a mounting frame and an assembling cylinder, a first connecting plate and a second connecting plate are arranged on the two opposite sides of the mounting frame respectively and used for being connected with an external mounting carrier, an assembling hole is formed in the middle of the mounting frame, and the assembling cylinder is arranged in the assembling hole. The assembling cylinder is assembled in the assembling hole, one end of the assembling cylinder is used for assembling the prefilter, the other end of the assembling cylinder is used for being connected with an air inlet connector of an air filter tank body, the air filter is fixed to an external carrier through the mounting frame to be in through connection, and the assembling cylinder is supported in an auxiliary mode through the mounting frame at the assembling cylinder, so that the long cantilever type structure in the prior art is effectively improved; therefore, the problem that the air filter support is prone to fracture and failure due to the fact that the installation height is high, the weight of the prefilter is heavy and the prefilter is affected by vibration of an engine in the using process is effectively solved, and the overall stability of the installation structure of the prefilter is improved.

Description

Technical Field

[0001] This utility model relates to the field of diesel engine intake technology, and in particular to a pre-filter installation structure and a pre-filter. Background Technology

[0002] The main function of an air filter is to continuously and stably supply the engine with clean, dry, and appropriately temperatured air for combustion, thereby minimizing engine wear and maintaining optimal engine performance. The air pre-filter is a crucial accessory for the air filter; it acts like a mask for a loader, serving as the first line of defense in air filtration. It removes over 98% of dust and impurities from the intake air. After two stages of filtration—the pre-filter and the air filter element—almost 100% of the dust is kept outside the engine, significantly reducing engine wear and extending engine life.

[0003] However, air pre-filters are generally connected directly to the air inlet of the air filter canister via a transition pipe and clamps, which results in a long cantilever structure. Due to the high installation height and the heavy weight of the pre-filter itself, it is also affected by engine vibration during use, which makes the air filter bracket prone to breakage and failure, resulting in low reliability. Utility Model Content

[0004] In order to overcome at least one of the defects of the prior art, the present invention provides a pre-filter installation structure and a pre-filter, which can solve the problem of easy breakage caused by the use of a long cantilever structure for assembling air pre-filters.

[0005] The technical solution adopted by this utility model to solve its problem is:

[0006] A pre-filter mounting structure and a pre-filter, comprising:

[0007] The mounting frame has a first connecting plate and a second connecting plate on opposite sides, both of which are used to connect with an external mounting carrier. The mounting frame has an assembly hole in the middle.

[0008] An assembly cylinder is assembled in the assembly hole. One end of the assembly cylinder is used to assemble the pre-filter, and the other end is used to connect to the air inlet interface of the air filter tank.

[0009] Furthermore, a flexible hose is connected to the end of the assembly cylinder facing the air inlet of the air filter tank.

[0010] Furthermore, the hose is a corrugated pipe.

[0011] Furthermore, the hose is made of EPDM material.

[0012] Furthermore, the assembly cylinder includes a wide-diameter section and a narrow-diameter section, which are connected. The wide-diameter section is used to assemble the pre-filter, and the narrow-diameter section is used to connect to the air inlet of the air filter tank.

[0013] Furthermore, the assembly cylinder and the mounting bracket are integrally formed.

[0014] Furthermore, the hose is sleeved on the outside of the assembly cylinder, and a clamp is fitted on the portion of the hose that overlaps with the assembly cylinder.

[0015] Furthermore, the clamp is a spiral clamp.

[0016] Furthermore, a first adapter plate is provided between the first connecting plate and the mounting bracket to increase the distance between the first connecting plate and the mounting bracket, and a second adapter plate is provided between the second connecting plate and the mounting bracket to increase the distance between the second connecting plate and the mounting bracket.

[0017] This utility model also provides a pre-filter, including the pre-filter mounting structure described above.

[0018] In summary, the pre-filter installation structure and pre-filter provided by this utility model have the following technical effects:

[0019] The mounting cylinder is fitted into the mounting hole of the mounting bracket. The air filter is transferred through the mounting cylinder, and the mounting bracket is fixed to the external carrier, thereby dispersing the impact of the pre-filter's weight and reducing the impact of engine vibration on the pre-filter. Furthermore, the mounting bracket provides auxiliary support to the mounting cylinder at the mounting point, effectively improving the long cantilever structure in the prior art. This effectively prevents the air filter bracket from easily breaking and failing due to the high installation height, the heavy weight of the pre-filter itself, and the impact of engine vibration during use, thus improving the overall stability of the pre-filter installation structure. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the exploded structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the mounting bracket in its assembled state according to the present invention.

[0022] Figure 3 This is a schematic cross-sectional view of the mounting bracket and assembly cylinder of this utility model;

[0023] Figure 4 This is a schematic diagram of the clamp structure of this utility model;

[0024] Figure 5 This is a schematic diagram of the external mounting carrier of this utility model.

[0025] The meanings of the reference numerals in the attached drawings are as follows: 1. Mounting bracket; 11. First connecting plate; 12. Second connecting plate; 13. First adapter plate; 14. Second adapter plate; 2. Assembly cylinder; 21. Wide diameter section; 22. Narrow diameter section; 3. Hose; 4. Pre-filter; 5. External mounting carrier; 6. Air inlet port of air filter tank; 7. Clamp. Detailed Implementation

[0026] To better understand and implement this invention, the technical solutions in the embodiments of this invention will be clearly and completely described and discussed below with reference to the accompanying drawings. Obviously, what is described here is only a part of the examples of this invention, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the protection scope of this invention.

[0027] To facilitate understanding of the embodiments of this utility model, further explanations and descriptions will be provided below with reference to the accompanying drawings and specific embodiments. These embodiments do not constitute a limitation on the embodiments of this utility model.

[0028] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0030] See Figures 1-5 This utility model discloses a pre-filter installation structure and a pre-filter 4, including a mounting frame 1 and an assembly cylinder 2. The mounting frame 1 has a first connecting plate 11 and a second connecting plate 12 on opposite sides. The first connecting plate 11 and the second connecting plate 12 are both used to connect with an external mounting carrier 5. The mounting frame 1 has an assembly hole in the middle. The assembly cylinder 2 is assembled in the assembly hole. One end of the assembly cylinder 2 is used to assemble the pre-filter 4, and the other end is used to connect with the air inlet port 6 of the air filter tank.

[0031] Specifically, the mounting bracket 1 has a first connecting plate 11 and a second connecting plate 12 on opposite sides for connecting to an external mounting carrier. One end of the assembly cylinder 2 is fitted with a pre-filter 4, and the other end is connected to the air inlet port 6 of the air filter canister. That is, the pre-filter 4 is transferred through the assembly cylinder 2, which is mounted on the mounting bracket 1. This allows the mounting bracket 1 to distribute the weight of the pre-filter 4 and effectively reduce the impact of engine vibration on the pre-filter 4, preventing the air filter bracket from easily breaking and failing due to the long cantilever structure. The mounting bracket 1 fixes the pre-filter 4 in a relatively stable position, reducing the direct impact of engine vibration on the pre-filter 4. The first connecting plate 11 and the second connecting plate 12 can be screwed, snap-fitted, welded, or any other connection method that can fix the mounting bracket 1 to the external mounting carrier 5. The specific connection method is not limited here. Optionally, in this embodiment, the first connecting plate 11 and the second connecting plate 12 are connected to the external mounting carrier 5 by screwing. Correspondingly, the external mounting carrier 5 is provided with mounting brackets for screws to pass through, so as to install and fix the screws.

[0032] See Figure 1 As shown, in some embodiments, the assembly cylinder 2 is connected to a hose 3 at the end facing the air inlet port 6 of the air filter tank.

[0033] Specifically, since the vibration of the engine is transmitted to the pre-filter 4, it is very easy to cause resonance between the engine and the pre-filter 4, resulting in extremely high noise levels and a poor user experience. Furthermore, the resonance will further increase the risk of breakage of the assembly cylinder 2. Therefore, a hose 3 is used to connect the assembly cylinder 2 and the air filter canister intake port 6. By using the hose 3 for connection, the vibration from the engine transmitted to the pre-filter 4 can be effectively buffered, reducing the occurrence of resonance, thereby reducing the noise level and improving the overall stability of the system.

[0034] See Figure 1 As shown, hose 3 is further described as a corrugated pipe.

[0035] Specifically, due to the inevitable vibrations generated during engine operation, the hose 3, which serves as a transition component, experiences high-frequency, minute displacement. If a conventional hose 3 were used, this continuous, minute movement could lead to material fatigue over time, eventually causing the hose 3 to break and affecting its service life. The corrugated hose, due to its corrugated structure, allows for free bending and expansion within a certain range. Compared to a conventional hose 3, the corrugated hose can absorb and mitigate displacement caused by engine vibrations, thus allowing it to maintain good flexibility and durability under the aforementioned conditions, avoiding material damage or failure due to repeated stretching and compression.

[0036] Furthermore, hose 3 is made of EPDM material.

[0037] Specifically, EPDM (ethylene propylene diene monomer) material has good weather resistance, resisting the effects of ultraviolet radiation, ozone, and other environmental factors, and will not age or degrade rapidly due to long-term exposure to the outdoors or harsh environments. This is especially important for engineering machinery equipment, as they typically operate under various climatic conditions. Furthermore, EPDM can maintain its physical and mechanical properties over a wide temperature range. It remains flexible and resistant to deformation at high temperatures and does not become brittle at low temperatures, thus ensuring the stable performance of the hose in different seasons and regions.

[0038] See Figure 3 As shown, in some embodiments, the assembly cylinder 2 includes a wide diameter section 21 and a narrow diameter section 22, which are connected. The wide diameter section 21 is used to assemble the pre-filter 4, and the narrow diameter section 22 is used to connect the air inlet port 6 of the air filter tank.

[0039] Specifically, the wide-diameter section 21 ensures that the pre-filter 4 can be securely mounted on the assembly cylinder 2, providing sufficient contact area to distribute pressure and avoid localized stress concentration. The narrow-diameter section 22 is used to connect the air filter canister inlet 6, ensuring a tight fit between the two.

[0040] See Figure 3 As shown, in some embodiments, the assembly cylinder 2 and the mounting bracket 1 are integrally formed.

[0041] Specifically, the assembly cylinder 2 and the mounting bracket 1 are integrally formed into a continuous whole structure, eliminating the weak points at the joints that may exist in the traditional split design, thereby enhancing the mechanical strength of the overall structure, improving its vibration resistance and impact resistance, and ensuring long-term stable operation under complex working conditions.

[0042] See Figure 1 and Figure 4 As shown, in some embodiments, the hose 3 is sleeved on the outside of the assembly cylinder 2, and the portion of the hose 3 that overlaps with the assembly cylinder 2 is fitted with a clamp 7.

[0043] Specifically, the application of clamp 7 securely fixes hose 3 to assembly cylinder 2, ensuring a tight and leak-free connection between the two. This is crucial for maintaining the airtightness and efficient operation of the intake system, preventing air or impurities from seeping in from the connection point, and ensuring stable airflow transmission between pre-filter 4 and air filter canister.

[0044] See Figure 4 As shown, the clamp 7 is further described as a spiral clamp 7.

[0045] Specifically, the spiral clamp 7 is very easy to operate; it can be quickly installed and tightened simply by turning it by hand or with a simple tool (such as a screwdriver). Furthermore, it allows for fine-tuning during installation to ensure optimal fit. Loosening is equally convenient, facilitating subsequent maintenance or replacement of the hose 3, reducing operational difficulty and technical requirements.

[0046] See Figure 1 and Figure 3 As shown, in some embodiments, a first adapter plate 13 is provided between the first connecting plate 11 and the mounting frame 1 to increase the distance between the first connecting plate 11 and the mounting frame 1, and a second adapter plate 14 is provided between the second connecting plate 12 and the mounting frame 1 to increase the distance between the second connecting plate 12 and the mounting frame 1.

[0047] Specifically, since both the assembly cylinder 2 and the hose 3 have a certain length, directly connecting the pre-filter 4 to the mounting bracket 1 would result in an excessively long free end of the assembly cylinder 2. By setting a first adapter plate 13 between the first connecting plate 11 and the mounting bracket 1, and a second adapter plate 14 between the second connecting plate 12 and the mounting bracket 1, the overall height of the mounting bracket 1 is increased, thereby improving the connection position of the assembly cylinder 2 relative to the mounting bracket 1. This effectively shortens the length of the free end of the assembly cylinder 2, reduces the negative impact of the long cantilever structure, and significantly enhances the vibration resistance and mechanical strength of the entire system.

[0048] This utility model also provides a pre-filter, including the pre-filter mounting structure described above.

[0049] Specifically, the mounting bracket 1 provides stable support and distributes the weight of the pre-filter 4, reducing the impact of engine vibration on the pre-filter 4 and preventing the problem of easy breakage of traditional long cantilever structures. As an intermediary, the mounting bracket 1 effectively buffers the vibration from the engine transmitted to the pre-filter 4, reduces the occurrence of resonance, reduces noise, and improves the overall stability of the system.

[0050] The technical means disclosed in this utility model are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.

Claims

1. A pre-filter installation structure, characterized in that, include: Mounting bracket (1), with a first connecting plate (11) and a second connecting plate (12) respectively on opposite sides. The first connecting plate (11) and the second connecting plate (12) are both used to connect with the external mounting carrier (5). The mounting bracket (1) has an assembly hole in the middle. Assembly cylinder (2), the assembly cylinder (2) is assembled in the assembly hole, one end of the assembly cylinder (2) is used to assemble the pre-filter (4), and the other end is used to connect to the air inlet port (6) of the air filter tank; The assembly cylinder (2) includes a wide diameter section (21) and a narrow diameter section (22), which are connected. The wide diameter section (21) is used to assemble the pre-filter (4), and the narrow diameter section (22) is used to connect the air inlet port (6) of the air filter tank.

2. The pre-filter installation structure according to claim 1, characterized in that, The assembly cylinder (2) is connected to a flexible hose (3) at one end facing the air inlet (6) of the air filter tank.

3. The pre-filter installation structure according to claim 2, characterized in that, The hose (3) is a corrugated pipe.

4. A pre-filter installation structure according to claim 2 or 3, characterized in that, The hose (3) is made of EPDM material.

5. The pre-filter installation structure according to claim 1, characterized in that, The assembly cylinder (2) and the mounting bracket (1) are integrally formed.

6. The pre-filter installation structure according to claim 2, characterized in that, The hose (3) is sleeved on the outside of the assembly cylinder (2), and the part of the hose (3) that overlaps with the assembly cylinder (2) is fitted with a clamp (7).

7. A pre-filter installation structure according to claim 6, characterized in that, The clamp (7) is a spiral clamp (7).

8. The pre-filter installation structure according to claim 1, characterized in that, A first adapter plate (13) is provided between the first connecting plate (11) and the mounting bracket (1) to increase the distance between the first connecting plate (11) and the mounting bracket (1). A second adapter plate (14) is provided between the second connecting plate (12) and the mounting bracket (1) to increase the distance between the second connecting plate (12) and the mounting bracket (1).

9. A pre-filter, characterized in that, Includes the pre-filter installation structure as described in any one of claims 1-8.

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