Hexagonal air prefilter

Abstract

The utility model discloses a hexagonal air prefilter, which comprises a coarse filter component, an upper shell, a dust outlet cavity, an upper coarse filter disc, a lower coarse filter disc, a central pipe and an air inlet filter screen, and the air inlet filter screen is cylindrical and encloses each cyclone pipe component; the outer contour lines of the horizontal sections of the air inlet filter screen, the upper rough filter disc, the lower rough filter disc, the upper shell and the dust outlet cavity are all in a regular hexagon shape; the cyclone pipe assemblies are arranged in pairs with the center line of the center pipe as the axis to form at least two circles, namely inner-circle cyclone pipes and outer-circle cyclone pipes, all the cyclone pipes in the inner-circle cyclone pipes are arranged close to the outer wall of the center pipe, and all the cyclone pipes in the outer-circle cyclone pipes are arranged close to the inner side edge of the regular hexagon. According to the air prefilter, the size of the air prefilter is reduced, the number of the rotational flow pipes is not reduced, and therefore the air prefilter is more compact in structure, lower in occupied space, capable of meeting the compact technology development trend, smaller in required vehicle installation space, capable of adapting to installation space of more vehicle types and capable of conveniently achieving a plane installation structure.

Description

Technical Field

[0001] The utility model relates to an air pre-filter. Background Art

[0002] Construction machinery and agricultural machinery vehicles often work in places with heavy air pollution, and the air filter has a heavy workload. If the pre-filter function is not added, the service life of the air filter will be greatly shortened, and the air filter needs to be frequently maintained or replaced, which increases the cost of use and is also very inconvenient. Therefore, air pre-filters have become a must-have device for such vehicles.

[0003] like Figure 1 As shown, the existing air pre-filter includes a coarse filter assembly, which includes an upper coarse filter plate and a lower coarse filter plate. The upper coarse filter plate is upwardly connected to an upper shell body, and an air outlet cavity is formed between the upper shell body and the upper coarse filter plate. A central tube 6 is connected to the center of the upper coarse filter plate, and the upper end of the central tube 6 is communicated with the air outlet cavity. The lower end of the central tube 6 extends out of the lower coarse filter plate and is used to communicate with the air inlet of the air filter of the motor vehicle.

[0004] A plurality of cyclone tube assemblies 7 are arranged between the upper coarse filter plate and the lower coarse filter plate, and an air intake filter screen 8 is connected between the upper coarse filter plate and the lower coarse filter plate. The air intake filter screen 8 is cylindrical and encloses each cyclone tube assembly 7 therein.

[0005] The cyclone tube assemblies 7 are arranged in a ring shape, and are usually arranged in two ring shapes on two concentric circles, such as Figure 1 shown.

[0006] Due to the limitations of the specific outer diameter of the pre-filter (the outer diameter of the air intake filter 8 ), the outer diameter of the swirl tube and the outer diameter of the central tube 6 , this structure often does not save space.

[0007] With the development of technology, the number of various components in motor vehicles is increasing (such as sensors that did not exist before, post-processing devices related to motor vehicle emissions, etc.), and the installation space in the vehicle is becoming more and more compact. Therefore, it is necessary to design a more space-saving air pre-filter.

[0008] In the past, the overall horizontal cross-section of the existing air pre-filter was circular. Although circular parts are easy to process, when the air pre-filter is installed on the vehicle, its surface is not a natural plane, and it is not convenient to realize a flat installation structure. If a connecting structure is added, the number of parts and the space required for installation will increase (which does not conform to the technical trend of compact development). Therefore, it is necessary to design an air pre-filter that is easy to realize flat installation.

[0009] The existing connection structure connecting the air pre-filter and the internal mounting structure of the vehicle (such as a connection frame fixed on the frame) is arranged on the air intake filter 8. The disadvantage is that part of the air intake area is blocked, which is not conducive to reducing the air intake resistance. Utility Model Content

[0010] The utility model aims to provide a hexagonal air pre-filter, the overall horizontal cross-section of which is a regular hexagon, thereby reducing the overall space occupied by the air pre-filter and facilitating planar connection with a mounting member (a frame or a mounting bracket on the frame) in a motor vehicle.

[0011] To achieve the above purpose, the hexagonal air pre-filter of the utility model includes a coarse filter assembly, which includes an upper coarse filter plate and a lower coarse filter plate. The upper coarse filter plate is upwardly connected to an upper shell body, and an air outlet cavity is formed between the upper shell body and the upper coarse filter plate; the lower coarse filter plate is downwardly connected to a dust outlet cavity;

[0012] The center of the upper coarse filter plate is connected with a central tube, the upper end of the central tube is communicated with the air outlet cavity, and the lower end of the central tube extends out of the lower coarse filter plate and the dust outlet cavity and is used to communicate with the air inlet of the motor vehicle air filter;

[0013] A plurality of swirl tube assemblies are arranged between the upper coarse filter plate and the lower coarse filter plate, and an air intake filter is connected between the upper coarse filter plate and the lower coarse filter plate. The air intake filter is cylindrical and encloses each swirl tube assembly.

[0014] The outer contour lines of the horizontal cross-sections of the air inlet filter, the upper coarse filter plate, the lower coarse filter plate, the upper shell and the dust outlet chamber are all regular hexagons;

[0015] Each vortex tube assembly is arranged with the center line of the central tube as the axis to form at least two circles, namely an inner circle vortex tube and an outer circle vortex tube. Each vortex tube in the inner circle vortex tube is arranged close to the outer wall of the central tube, and each vortex tube in the outer circle vortex tube is arranged close to the inner side of the regular hexagon.

[0016] The outer surface of the upper shell body has a vertical side surface corresponding to each side of its regular hexagonal horizontal cross-section, and a plurality of horizontally arranged horizontal ribs are arranged at intervals above and below the outer surface of the upper shell body, and the horizontal ribs are ring-shaped; a plurality of vertically arranged vertical ribs are arranged on each vertical side surface of the upper shell body, and each horizontal rib on each vertical side surface of the upper shell body and each corresponding vertical rib (preferably integrally cast and formed) form an assembly groove; the horizontal ribs, the vertical ribs and the assembly groove serve as a connecting structure connected to the internal mounting structure of the vehicle.

[0017] The utility model has the following advantages:

[0018] The horizontal cross section of the utility model is a regular hexagon, which reduces the space occupied by the air pre-filter compared to the previous circular shape. Figure 1 And the instruction manual Figure 3 , attached Figure 3 The circumcircle of the regular hexagon in the figure is Figure 1 The outer diameter of the circle is the same as the area of ​​the regular hexagon inscribed in a circle. Obviously, the area of ​​the corresponding attached Figure 3The overall volume of the air pre-filter in the Figure 1 See also the appendix of the instruction manual. Figure 1 And the instruction manual Figure 3 The utility model reduces the volume of the air pre-filter without reducing the number of cyclone tubes (two circles of 38 cyclone tubes in total), so compared with the attached Figure 1 The existing air pre-filter structure is more compact and occupies less space, which is in line with the development trend of compact technology and requires a smaller vehicle installation space, thus being able to adapt to the installation space of more models. Figure 3 Each side of the regular hexagon in the figure has a flat vertical side surface of the air pre-filter, which can easily realize a flat installation structure and is more conducive to the assembly of the air pre-filter.

[0019] The existing structure in which the air pre-filter is connected to the internal mounting structure of the vehicle (such as a connecting frame fixed on the frame) is arranged on the air intake filter. The utility model is clamped on the internal mounting structure of the vehicle through horizontal clamping ribs, vertical clamping ribs and assembly clamping grooves, which conveniently realizes plane clamping and does not reduce the air intake area of ​​the air intake filter, and does not increase the air intake resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a horizontal cross-sectional view of an existing air pre-filter;

[0021] Figure 2 This is a schematic diagram of the main structure of the hexagonal air pre-filter of the utility model;

[0022] Figure 3 yes Figure 2 AA section view;

[0023] Figure 4 yes Figure 2 BB cross-sectional view. DETAILED DESCRIPTION

[0024] like Figures 2 to 4 As shown, the hexagonal air pre-filter of the utility model includes a coarse filter assembly, which includes an upper coarse filter plate 1 and a lower coarse filter plate 2. The upper coarse filter plate 1 is upwardly connected to an upper shell 3, and an air outlet cavity 4 is formed between the upper shell 3 and the upper coarse filter plate 1; the lower coarse filter plate 2 is downwardly connected to a dust outlet cavity 5;

[0025] The center of the upper coarse filter plate 1 is connected with a central tube 6, the upper end of the central tube 6 is communicated with the air outlet cavity 4, and the lower end of the central tube 6 extends out of the lower coarse filter plate 2 and the dust outlet cavity 5 and is used to communicate with the air inlet of the motor vehicle air filter;

[0026] A plurality of cyclone tube assemblies 7 are provided between the upper coarse filter plate 1 and the lower coarse filter plate 2. An air intake filter screen 8 is connected between the upper coarse filter plate 1 and the lower coarse filter plate 2. The air intake filter screen 8 is cylindrical and encloses each cyclone tube assembly 7.

[0027] The outer contour lines of the horizontal cross-sections of the air inlet filter 8, the upper coarse filter plate 1, the lower coarse filter plate 2, the upper shell 3 and the dust outlet chamber 5 are all regular hexagons;

[0028] Each swirl tube assembly 7 is arranged with the center line of the central tube 6 as the axis to form at least two circles, namely an inner circle swirl tube and an outer circle swirl tube. Each swirl tube in the inner circle swirl tube is arranged close to the outer wall of the central tube 6, and each swirl tube in the outer circle swirl tube is arranged close to the inner side of the regular hexagonal cross-section of the air intake filter 8.

[0029] The horizontal cross section of the utility model is a regular hexagon, which reduces the space occupied by the air pre-filter compared to the previous circular shape. Figure 1 And the instruction manual Figure 3 , attached Figure 3 The circumcircle of the regular hexagon in the figure is Figure 1 The outer diameter of the circle is the same as the area of ​​the regular hexagon inscribed in a circle. Obviously, the area of ​​the corresponding attached Figure 3 The overall volume of the air pre-filter in the Figure 1 See also the appendix of the instruction manual. Figure 1 And the instruction manual Figure 3 The utility model reduces the volume without reducing the number of swirl tubes (there are two circles of 38 swirl tubes in total), so compared with the attached Figure 1 The existing air pre-filter structure is more compact and occupies less space, which is in line with the development trend of compact technology and requires a smaller vehicle installation space, thus being able to adapt to the installation space of more models. Figure 3 Each side of the regular hexagon in the figure has a flat vertical side surface of the air pre-filter, which can easily realize a flat installation structure and is more conducive to the assembly of the air pre-filter.

[0030] The outer surface of the upper shell 3 has a vertical side surface corresponding to each side of its regular hexagonal horizontal cross-section, and a plurality of horizontally arranged horizontal clips 9 are arranged at intervals from top to bottom on the outer surface of the upper shell 3, and the horizontal clips 9 are ring-shaped; a plurality of vertically arranged vertical clips 10 are arranged on each vertical side surface of the upper shell 3, and each horizontal clip rib 9 on each vertical side surface of the upper shell 3 and each corresponding vertical clip rib 10 (preferably integrally cast and formed) surround an assembly slot 11; the horizontal clip rib 9, the vertical clip rib 10 and the assembly slot 11 serve as a connecting structure connected to the internal mounting structure of the vehicle.

[0031] The structure connecting the existing air pre-filter and the internal mounting structure of the vehicle (such as a connecting frame fixed on the frame) is arranged on the air intake filter 8. The utility model is clamped on the internal mounting structure of the vehicle through horizontal clamping ribs 9, vertical clamping ribs 10 and assembly clamping grooves 11, which conveniently realizes plane clamping and does not reduce the air intake area of ​​the air intake filter 8, and does not increase the air intake resistance.

[0032] The horizontal cross-section of the existing air pre-filter is circular, and the utility model is innovatively designed as a regular hexagon, which is not only suitable for the arrangement of most cyclone tubes (different models have different diameters), but also the regular hexagon in the utility model is just the regular hexagon inscribed in the outer circle of the existing similar air pre-filter, which is very convenient to improve the structure of the existing circular (horizontal cross-section) air pre-filter into a regular hexagonal model. When performing structural conversion design, it is only necessary to modify the outer circle shape of the existing air pre-filter into the shape of an inscribed regular hexagon, and at the same time, the cyclone tube of the outer circle is arranged close to the regular hexagon. The structural conversion design of the existing circular air pre-filter is relatively convenient, and the design workload is relatively small (compared with redesigning the external dimensions).

[0033] The above embodiments are only used to illustrate rather than limit the technical solutions of the present invention. Although the present invention is described in detail with reference to the above embodiments, those skilled in the art should understand that the present invention can still be modified or replaced by equivalents. Any modification or partial replacement that does not depart from the spirit and scope of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A hexagonal air pre-filter includes a coarse filter assembly, which includes an upper coarse filter plate and a lower coarse filter plate. The upper coarse filter plate is upwardly connected to an upper housing, and an air outlet cavity is formed between the upper housing and the upper coarse filter plate; the lower coarse filter plate is downwardly connected to a dust outlet cavity; The center of the upper coarse filter plate is connected with a central tube, the upper end of the central tube is communicated with the air outlet cavity, and the lower end of the central tube extends out of the lower coarse filter plate and the dust outlet cavity and is used to communicate with the air inlet of the motor vehicle air filter; A plurality of swirl tube assemblies are arranged between the upper coarse filter plate and the lower coarse filter plate, and an air intake filter is connected between the upper coarse filter plate and the lower coarse filter plate. The air intake filter is cylindrical and encloses each swirl tube assembly. Features: The outer contour lines of the horizontal cross-sections of the air inlet filter, the upper coarse filter plate, the lower coarse filter plate, the upper shell and the dust outlet chamber are all regular hexagons; Each vortex tube assembly is arranged with the center line of the central tube as the axis to form at least two circles, namely an inner circle vortex tube and an outer circle vortex tube. Each vortex tube in the inner circle vortex tube is arranged close to the outer wall of the central tube, and each vortex tube in the outer circle vortex tube is arranged close to the inner side of the regular hexagon.

2. The hexagonal air pre-filter according to claim 1, characterized in that: The outer surface of the upper shell body has a vertical side surface corresponding to each side of its regular hexagonal horizontal cross-section, and a plurality of horizontally arranged horizontal ribs are arranged at intervals above and below the outer surface of the upper shell body, and the horizontal ribs are ring-shaped; a plurality of vertically arranged vertical ribs are arranged on each vertical side surface of the upper shell body, and each horizontal rib on each vertical side surface of the upper shell body and each corresponding vertical rib form an assembly slot; the horizontal ribs, the vertical ribs and the assembly slot serve as a connecting structure connected to the internal mounting structure of the vehicle.

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