Filter element for automobile exhaust particulate matter catcher

Abstract

The utility model discloses a filter element for an automobile exhaust particulate trap, which relates to the technical field of particulate traps and comprises a shell and further comprises a top cover slidably connected to the inner wall of the shell and shaped like a Chinese character'tu ', the filter element is arranged in the shell, an intercepting net and a filter net are respectively arranged in the top cover, and the intercepting net and the filter net are arranged in the shell. The filter element has the beneficial effects that the aperture of the through hole in the filter element is of the gradient aperture structure, and the aperture of the through hole is gradually reduced from the air inlet end to the air outlet end, so that particulate matters can be caught in a grading manner, the risk of deep blockage can be reduced, and the sizes of the intercepting net and the filter net are designed differently; and in the using process of the equipment, particulate matter discharged by the engine can be intercepted through the intercepting net, secondary filtering can be conducted on the particulate matter discharged by the engine through the filtering net, and therefore the filtering quality of the equipment on the particulate matter discharged by the engine is improved.

Description

Technical Field

[0001] This utility model relates to the field of particulate matter trap technology, and in particular to a filter element for an automotive exhaust particulate matter trap. Background Technology

[0002] An automotive particulate filter is a ceramic filter installed in the emission system of a diesel engine. It captures particulate matter before it enters the atmosphere. The particulate filter can reduce soot produced by the engine by more than 90%, and the captured particulate matter is then burned off during vehicle operation.

[0003] With increasingly stringent global environmental regulations, particularly restrictions on particulate matter emissions from engines, the automotive industry urgently needs to develop efficient and low-cost exhaust aftertreatment technologies. As a core component, the performance of the particulate filter directly affects its collection efficiency, regeneration capacity, and system reliability. However, existing particulate filters typically have uniform pore sizes. When filtering particulate matter in exhaust gases, this can easily cause blockage at the pore size, reducing the device's filtration efficiency. Furthermore, existing particulate filters often use bolts for fixing the filter structure, requiring significant time for disassembly and cleaning, thus impacting the device's operational efficiency. Utility Model Content

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] A filter element for an automotive exhaust particulate matter trap includes a housing and further includes:

[0007] The inner wall of the housing is slidably connected to a top cover, and the top cover is convex in shape. The housing is equipped with a filter element, and the top cover is equipped with an interception mesh and a filter mesh. The inner wall of the top cover is provided with several sets of exhaust holes, and the housing is equipped with several sets of snap-fit ​​components.

[0008] The snap-fit ​​assembly includes four sets of springs fixed to the inner wall of the housing. One end of each of the four sets of springs is fixed with a positioning rod, and the outer side of the positioning rod is slidably connected to the inner wall of the housing. The inner wall of the top cover is provided with four sets of positioning holes, and the positions of the four sets of positioning holes correspond to the positions of the positioning rods.

[0009] As a preferred embodiment of the filter element for the automotive exhaust particulate matter trap of this utility model, the snap-fit ​​assembly further includes a pull rod fixed to one end of the positioning rod, and the other end of the pull rod passes through the inner wall of the housing to its outer side.

[0010] As a preferred embodiment of the filter element for the automotive exhaust particulate matter trap of this utility model, the inner wall of the housing is provided with two sets of first sealing rings, and the outer side of the top cover is provided with two sets of grooves, and the size of the two sets of grooves is the same as the size of the first sealing rings.

[0011] As a preferred embodiment of the filter element for the automotive exhaust particulate matter trap of this utility model, a fixing ring is provided at one end of the filter element, and a through hole is opened on the inner wall of the filter element, and the aperture of the through hole is a gradient aperture structure.

[0012] As a preferred embodiment of the filter element for the automotive exhaust particulate matter trap of this utility model, a connecting flange is provided at one end of the housing, a sealing gasket is provided on the inner wall of the connecting flange, and four sets of first bolts are evenly arranged on the inner wall of the connecting flange.

[0013] As a preferred embodiment of the filter element for the automotive exhaust particulate matter trap of this utility model, a bottom cover is fixed on one side of the connecting flange, and three sets of second sealing rings are provided on the inner wall of the bottom cover.

[0014] As a preferred embodiment of the filter element for the automotive exhaust particulate matter trap of this utility model, a first snap-fit ​​ring is fixed at the bottom of the bottom cover, a second snap-fit ​​ring is provided on the outer side of the first snap-fit ​​ring, and the position of the second snap-fit ​​ring is symmetrical to the position of the first snap-fit ​​ring.

[0015] As a preferred embodiment of the filter element for the automotive exhaust particulate matter trap of this utility model, wherein: a sliding rod is fixed on one side of the second snap-fit ​​ring, and the outer side of the sliding rod is slidably connected to the inner wall of the first snap-fit ​​ring; two sets of second bolts are provided inside the second snap-fit ​​ring, and the two sets of second bolts are designed to be symmetrical from left to right.

[0016] In summary, this utility model has the following beneficial effects:

[0017] 1. Because the pores in the filter element have a gradient pore size structure, and the pore size gradually decreases from the air inlet to the air outlet, it can achieve graded collection of particulate matter, reducing the risk of deep clogging. The interceptor and filter screens are designed with different sizes, so that the interceptor can intercept the particulate matter emitted by the engine during use, and the filter screen can perform secondary filtration of the particulate matter emitted by the engine, thereby improving the filtration quality of the equipment for particulate matter emitted by the engine.

[0018] 2. The spring design allows the positioning rod to be pushed into the positioning hole on the inner wall of the top cover by a counterforce. Since the size of the positioning hole is the same as the size of the positioning rod, the top cover sliding on the inner wall of the housing can be fixed. The pull rod design makes it easy to pull the positioning rod fixed at one end out of the positioning hole on the inner wall of the top cover, so that the top cover can be removed from the inner wall of the housing. At the same time, the multiple sets of snap-fit ​​components can fix the top cover sliding on the inner wall of the housing from different directions, thereby improving the stability of the top cover on the inner wall of the housing. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0020] Figure 1 This is a structural diagram of a filter element used in automotive exhaust particulate matter traps.

[0021] Figure 2 This is a structural diagram of the housing of a filter element used in an automotive exhaust particulate matter trap.

[0022] Figure 3 This is a structural diagram of a filter element for an automotive exhaust particulate matter trap.

[0023] Figure 4 This is a structural diagram of the first snap ring for a filter element used in an automotive exhaust particulate matter trap.

[0024] Figure 5 for Figure 2 The enlarged structural diagram at point A is shown.

[0025] The following are the labeling elements in the diagram: 1. Shell; 2. Top cover; 3. Filter element; 4. Interception mesh; 5. Filter mesh; 6. Exhaust port; 7. Snap-fit ​​assembly; 71. Spring; 72. Positioning rod; 73. Positioning hole; 74. Pull rod; 8. First sealing ring; 9. Groove; 10. Fixing ring; 11. Through hole; 12. Connecting flange; 13. Sealing gasket; 14. First bolt; 15. Bottom cover; 16. Second sealing ring; 17. First snap-fit ​​ring; 18. Second snap-fit ​​ring; 19. Slide rod; 20. Second bolt. Detailed Implementation

[0026] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0027] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0028] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0029] Example 1:

[0030] Reference Figures 1-5 This is the first embodiment of the present invention. This embodiment provides a filter element for an automotive exhaust particulate matter trap, including a housing 1, a top cover 2 slidably connected to the inner wall of the housing 1, and the top cover 2 is convex in shape. A filter element 3 is disposed inside the housing 1, and an interception net 4 and a filter net 5 are disposed inside the top cover 2 respectively. Several sets of exhaust holes 6 are opened on the inner wall of the top cover 2, and several sets of snap-fit ​​components 7 are disposed inside the housing 1.

[0031] The housing 1 protects the filter element 3 inside. The convex shape of the top cover 2 allows for the placement of interceptor nets 4 and filters 5 of different sizes. The different sizes of the interceptor nets 4 and filters 5 ensure that the interceptor nets 4 and filters 5 can intercept particulate matter emitted by the engine, while the filters 5 provide secondary filtration, improving the filtration quality. Multiple exhaust ports 6 allow the filtered gas to be discharged. The snap-fit ​​assembly 7 secures the top cover 2, which slides against the inner wall of the housing 1, facilitating disassembly and cleaning of the interceptor nets 4 and filters 5 after prolonged use. It should be noted that the dimensions of the interceptor nets 4 and 5 are the same as the wider bottom of the top cover 2, and the dimensions of the filters 5 are the same as the narrower top of the top cover 2. This allows multiple sets of interceptor nets 4 and filters 5 to be installed on the inner wall of the top cover 2, enabling multiple filtrations of particulate matter emitted by the engine.

[0032] The snap-fit ​​assembly 7 includes four sets of springs 71 fixed to the inner wall of the housing 1. One end of each set of springs 71 is fixed with a positioning rod 72, and the outer side of the positioning rod 72 is slidably connected to the inner wall of the housing 1. The inner wall of the top cover 2 is provided with four sets of positioning holes 73, and the positions of the four sets of positioning holes 73 correspond to the positions of the positioning rods 72. The snap-fit ​​assembly 7 also includes a pull rod 74 fixed to one end of the positioning rod 72, and the other end of the pull rod 74 passes through the inner wall of the housing 1 to its outer side.

[0033] The spring 71 is designed to push the positioning rod 72, which is fixed at one end, into the positioning hole 73 on the inner wall of the top cover 2 through a reverse force. Since the size of the positioning hole 73 is the same as that of the positioning rod 72, the top cover 2, which slides on the inner wall of the housing 1, can be fixed. The pull rod 74 is designed to pull the positioning rod 72, which is fixed at one end, out of the positioning hole 73 on the inner wall of the top cover 2, so that the top cover 2 can be removed from the inner wall of the housing 1. It should be noted that the multiple sets of snap-fit ​​components 7 can fix the top cover 2, which slides on the inner wall of the housing 1, from different directions, thereby improving the stability of the top cover 2 on the inner wall of the housing 1.

[0034] Example 2:

[0035] This is the second embodiment of the present invention, which is based on the previous embodiment.

[0036] Specifically, the inner wall of the housing 1 is provided with two sets of first sealing rings 8, and the outer side of the top cover 2 is provided with two sets of grooves 9, and the dimensions of the two sets of grooves 9 are the same as the dimensions of the first sealing rings 8.

[0037] Since the size of the first sealing ring 8 is the same as the size of the inner wall of the groove 9, when the top cover 2 is inserted into the inner wall of the housing 1, the first sealing ring 8 will fit with the groove 9, thereby sealing the connection between the top cover 2 and the housing 1 and preventing gas from leaking from this point during the use of the device.

[0038] Specifically, a fixing ring 10 is provided at one end of the filter element 3, and a through hole 11 is provided on the inner wall of the filter element 3, and the aperture of the through hole 11 is a gradient aperture structure.

[0039] Since the size of the retaining ring 10 fits the inner wall of the housing 1, and the retaining ring 10 is fixedly connected to one end of the filter element 3, the filter element 3 can be installed on the inner wall of the housing 1. At the same time, since the aperture of the through hole 11 is a gradient aperture structure, the aperture of the through hole 11 gradually decreases from the air inlet end to the air outlet end, which can realize the graded collection of particulate matter, thereby reducing the risk of deep blockage.

[0040] Example 3:

[0041] This is the third embodiment of the present invention, which is based on the first two embodiments.

[0042] Specifically, a connecting flange 12 is provided at one end of the housing 1, a sealing gasket 13 is provided on the inner wall of the connecting flange 12, and four sets of first bolts 14 are arranged evenly on the inner wall of the connecting flange 12.

[0043] The connecting flange 12 consists of a first connecting plate and a second connecting plate. The first connecting plate is fixedly connected to the outside of the housing 1, and the second connecting plate is slidably connected to the outside of the bottom cover 15. When the first bolt 14 is tightened, the bottom cover 15 can be installed at the bottom of the housing 1. At the same time, since the inner wall of the connecting flange 12 is provided with a sealing gasket 13, the connection between the first connecting plate and the second connecting plate can be sealed, thereby preventing gas leakage from this point during the use of the equipment.

[0044] Specifically, a bottom cover 15 is fixed to one side of the connecting flange 12, and three sets of second sealing rings 16 are provided on the inner wall of the bottom cover 15.

[0045] The bottom cover 15 can seal the bottom of the housing 1. Since the second sealing ring 16 is located on the inner wall of the bottom cover 15, when the engine particulate discharge pipe is inserted into the inner wall of the bottom cover 15, the second sealing ring 16 can seal the connection between the engine particulate discharge pipe and the bottom cover 15, thus preventing gas from leaking from this point during the use of the device.

[0046] Specifically, a first snap-fit ​​ring 17 is fixed to the bottom of the bottom cover 15, and a second snap-fit ​​ring 18 is provided on the outside of the first snap-fit ​​ring 17, and the position of the second snap-fit ​​ring 18 is symmetrical to the position of the first snap-fit ​​ring 17.

[0047] Since the first snap ring 17 is fixed to the bottom of the bottom cover 15, and the second snap ring 18 is slidably connected to the inner wall of the first snap ring 17 through the slide rod 19, the engine particulate emission pipe can be fixed when the second snap ring 18 moves toward the first snap ring 17.

[0048] Specifically, a slide rod 19 is fixed on one side of the second snap ring 18, and the outer side of the slide rod 19 is slidably connected to the inner wall of the first snap ring 17. Two sets of second bolts 20 are provided inside the second snap ring 18, and the two sets of second bolts 20 are designed to be symmetrical from left to right.

[0049] Since the outer side of the slide rod 19 is slidably connected to the inner wall of the first locking ring 17, and one end of the slide rod 19 is fixedly connected to the inner wall of the second locking ring 18, the second locking ring 18 can be fixed when it moves towards the first locking ring 17. When the second bolt 20 is tightened, the second locking ring 18 will drive the slide rod 19 to slide along the inner wall of the first locking ring 17, thereby fixing the particulate emission pipe of the engine.

[0050] When it is necessary to filter particulate matter in automobile exhaust, firstly, insert the engine's particulate emission pipe into the bottom cover 15, and then tighten the second bolt 20 inside the second locking ring 18. At this time, the second locking ring 18 will drive the slide rod 19 to slide along the inner wall of the first locking ring 17, thereby locking the engine's particulate emission pipe. Since the inner wall of the bottom cover 15 is provided with a second sealing ring 16, the connection between the engine's particulate emission pipe and the bottom cover 15 can be sealed, preventing gas leakage from this point during the use of the device. Then, the particulate matter in the exhaust gas is filtered through the filter element 3. Since the aperture of the through hole 11 opened on the inner wall of the filter element 3 is a gradient aperture structure, the aperture of the through hole 11 gradually decreases from the air inlet end to the air outlet end, which can achieve graded collection of particulate matter, thereby reducing the risk of deep blockage. Then, the particulate matter in the exhaust gas is filtered through the interception net 4 and filter net 5 set on the inner wall of the top cover 2. Due to the different sizes of the interception net 4 and filter net 5, the device can filter particulate matter during use. The interceptor net 4 can intercept particulate matter emitted by the engine, and the filter net 5 can perform secondary filtration of particulate matter emitted by the engine, thus improving the filtration quality of the equipment for particulate matter emitted by the engine. When the interceptor net 4 and filter net 5 need to be cleaned after long-term use, first pull the pull rod 74 that runs through the inner wall of the housing 1 to its outer side. At this time, the pull rod 74 will drive the positioning rod 72 to be pulled out from the positioning hole 73 opened in the inner wall of the top cover 2, thereby cleaning the interceptor net 4 and filter net 5 set inside the top cover 2. After cleaning the interceptor net 4 and filter net 5, the top cover 2 is reinserted into the housing 1, and then the pull rod 74 is released. At this time, the positioning rod 72 will be reinserted into the positioning hole 73 opened in the inner wall of the top cover 2 by the reverse force of the spring 71, thereby completing the purpose of fixing the top cover 2. At the same time, since the first sealing ring 8 set in the inner wall of the housing 1 and the groove 9 opened in the inner wall of the top cover 2 fit together, the connection between the top cover 2 and the housing 1 can be sealed, preventing gas from leaking from this point during the use of the equipment.

[0051] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A filter cartridge for a diesel particulate filter, comprising a housing (1), characterized in that: The inner wall of the shell (1) is slidably connected with a top cover (2), the top cover (2) is provided in a convex shape, the inside of the shell (1) is provided with a filter core (3), the inside of the top cover (2) is respectively provided with an intercepting net (4) and a filtering net (5), the inner wall of the top cover (2) is provided with a plurality of groups of exhaust holes (6), and the inside of the shell (1) is provided with a plurality of groups of clamping assemblies (7). The clamping assembly (7) comprises four groups of springs (71) fixed to the inner wall of the shell (1), one end of each of the four groups of springs (71) is fixed with a positioning rod (72), the outer side of the positioning rod (72) is slidably connected with the inner wall of the shell (1), the inner wall of the top cover (2) is provided with four groups of positioning holes (73), and the positions of the four groups of positioning holes (73) correspond to the positions of the positioning rods (72).

2. The filter cartridge for use in a vehicle exhaust particulate trap according to claim 1, wherein: The clamping assembly (7) further comprises a pull rod (74) fixed to one end of the positioning rod (72), and the other end of the pull rod (74) penetrates the inner wall of the shell (1) to the outer side thereof.

3. The filter cartridge for use in a vehicle exhaust particulate trap according to claim 1, wherein: The inner wall of the shell (1) is provided with two groups of first sealing rings (8), the outer side of the top cover (2) is provided with two groups of grooves (9), and the sizes of the two groups of grooves (9) are the same as the sizes of the first sealing rings (8).

4. The filter cartridge for use in a vehicle exhaust particulate trap according to claim 1, wherein: One end of the filter core (3) is provided with a fixing ring (10), the inner wall of the filter core (3) is provided with a through hole (11), and the aperture of the through hole (11) is a gradient aperture structure.

5. The filter cartridge for use in a vehicle exhaust particulate trap according to claim 1, wherein: One end of the shell (1) is provided with a connecting flange (12), the inner wall of the connecting flange (12) is provided with a sealing gasket (13), and the inner wall of the connecting flange (12) is provided with four groups of first bolts (14) arranged uniformly.

6. The filter cartridge for use in a vehicle exhaust particulate trap according to claim 5, wherein: One side of the connecting flange (12) is fixed with a bottom cover (15), and the inner wall of the bottom cover (15) is provided with three groups of second sealing rings (16).

7. The filter cartridge for use in a vehicle exhaust particulate trap according to claim 6, wherein: The bottom of the bottom cover (15) is fixed with a first clamping ring (17), the outer side of the first clamping ring (17) is provided with a second clamping ring (18), and the position of the second clamping ring (18) is symmetrically arranged with the position of the first clamping ring (17).

8. The filter cartridge for use in a vehicle exhaust particulate trap according to claim 7, wherein: One side of the second clamping ring (18) is fixed with a sliding rod (19), and the outer side of the sliding rod (19) is slidably connected with the inner wall of the first clamping ring (17), the inside of the second clamping ring (18) is provided with two groups of second bolts (20), and the two groups of second bolts (20) are designed symmetrically left and right.

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