Electronic filtration-type diesel exhaust particulate matter treatment device

Abstract

An electronic filtration-type diesel exhaust particulate matter treatment device, comprising: a housing (4), wherein one end of the housing (4) is a gas intake end, and the other end of the housing (4) is a gas output end; and a noble metal-supported catalyst filter screen (2), a ceramic fiber filter screen (3), an electronic filtration chamber and a silicon carbide filter screen (7) are sequentially provided inside the housing (4) from the gas intake end to the gas output end. The electronic filtration chamber comprises an insulating case (5), wherein at least one group of electrode plates (6) are provided in the insulating case (5), each group of electrode plates (6) comprising one positive plate and one negative plate parallel to each other. The present device solves the problem of the filtration and collection effect in existing particulate matter filters being unsatisfactory for PM2.5 and particulate matters of smaller diameters due to the limitation of filter pore size, failing to meet the requirements of increasingly stringent exhaust emission treatment.

Description

An electronic filtering diesel engine exhaust particulate matter treatment device Technical Field

[0001] The present invention relates to the field of exhaust gas treatment devices, and in particular to an electronic filtering type diesel engine exhaust particulate matter treatment device. Background Art

[0002] A diesel engine is a type of internal combustion engine that uses diesel fuel to convert internal energy into kinetic energy, resulting in high thermal efficiency and fuel economy. Diesel engines use compression ignition, whereby diesel fuel is injected into pre-compressed air at high pressure. The combustion occurs in the cylinder, pushing the piston to generate power.

[0003] Various industry standards are continuously tightening their requirements for diesel engine exhaust emissions treatment. A common exhaust treatment method is to use a particulate filter to collect particulate matter in the exhaust. However, the effectiveness of a particulate filter in collecting particulate matter is limited by the filter diameter. This makes it less effective for PM2.5 and smaller particles, and therefore unable to meet increasingly stringent exhaust emission treatment requirements.

[0004] Summary of the Invention

[0005] The present invention provides an electronic filtering diesel engine exhaust particulate matter treatment device to overcome the problem that existing particulate matter traps are limited by the filter caliber, have unsatisfactory filtering and collection effects on PM2.5 and smaller particles, and cannot meet the increasingly stringent exhaust emission treatment requirements.

[0006] In order to achieve the above object, the technical solution of the present invention is:

[0007] An electronic filtering diesel engine exhaust particulate matter treatment device comprises: a housing, one end of the housing being an air inlet end and the other end being an air outlet end, wherein a noble metal-supported catalyst filter, a ceramic fiber filter, an electronic filter chamber, and a silicon carbide filter are sequentially arranged inside the housing from the air inlet end to the air outlet end;

[0008] The electronic filter chamber comprises an insulating shell, in which at least one group of electrode plates is arranged, and each group of electrode plates comprises a positive plate and a negative plate parallel to each other.

[0009] Furthermore, the silicon carbide filter comprises a plurality of parallel arranged wavy hollow tubes, wherein silicon carbide particles are contained in the wavy hollow tubes, and a plurality of holes are formed on the outer wall of the wavy hollow tubes, wherein the diameter of the silicon carbide particles is larger than the diameter of the holes.

[0010] Furthermore, the electrode plate extends along the air inlet direction of the shell.

[0011] Furthermore, the air inlet end of the shell is provided with a detachable pre-treated exhaust gas inlet, and the air outlet end of the shell is provided with a detachable exhaust gas outlet.

[0012] Furthermore, the supported noble metal catalyst filter is composed of a ceramic substrate and a platinum-palladium supported catalyst.

[0013] Furthermore, the inner wall of the shell is provided with grooves for respectively installing the precious metal-loaded catalyst filter, ceramic fiber filter, electronic filter chamber and silicon carbide filter, and shock-absorbing pads are provided between the precious metal-loaded catalyst filter, ceramic fiber filter, electronic filter chamber and silicon carbide filter and the corresponding grooves.

[0014] Furthermore, a buffer foam is provided between the noble metal-loaded catalyst filter and the ceramic fiber filter.

[0015] Furthermore, it also includes a first cable and a DC regulated power supply;

[0016] One end of the first cable is electrically connected to the electrode plate after passing through the shell and the insulating shell, and the other end of the first cable is electrically connected to the DC regulated power supply.

[0017] Furthermore, it includes a second cable, one end of the second cable is electrically connected to the DC regulated power supply, and the other end of the second cable is electrically connected to the electrical connector.

[0018] Beneficial effects of the present invention:

[0019] The electronic filtering diesel engine exhaust particulate matter treatment device provided by the present invention has a precious metal-loaded catalyst filter disposed within the housing. The precious metal catalyst, which has a strong adsorption capacity and is capable of catalytically oxidizing exhaust particulate matter, adsorbs and catalyzes carbon-based compounds in the particulate matter. The filter and catalyst complement each other to achieve preliminary filtration of larger diameter particles in the exhaust gas.

[0020] By setting a ceramic fiber filter inside the shell, when the exhaust gas passes through the ceramic fiber filter, some particles will experience inertial collision, deposition and interception, and be collected by the pores and fiber surface of the ceramic fiber filter, thus achieving further filtration of larger diameter particles in the exhaust gas;

[0021] By setting up an electronic filter chamber with built-in electrode plates inside the shell, a high-voltage DC voltage is passed between the positive and negative plates of the electrode plates to ionize part of the air in the exhaust gas, converting the oxygen molecules in the air into active oxygen ions that can attach to the exhaust gas particles, thereby increasing the charge of the exhaust gas particles. A large number of charged particles move and deviate between the positive and negative plates, and are moved to the negative plate by the electric field force and attached to the surface of the negative plate. The exhaust gas particles are filtered and collected by utilizing the electric field force and the directional movement of the charge, thereby achieving the filtration of particles with a diameter of 1μm-50μm in the exhaust gas;

[0022] By arranging a silicon carbide filter inside the housing, some of the smaller particles remaining in the exhaust after passing through the electronic filter chamber are adsorbed by the active sites on the silicon carbide surface. At the same time, some particles undergo inertial collision and deposition when passing through the silicon carbide filter, causing them to lose kinetic energy and settle on the surface of the silicon carbide filter, thus achieving secondary filtration of smaller particles in the exhaust.

[0023] The precious metal-loaded catalyst filter and ceramic fiber filter are used to initially filter and collect particles with larger diameters in the exhaust gas, thereby effectively reducing the working pressure of the electronic filter chamber and extending the service life of the electronic filter chamber. At the same time, the electronic filter chamber can efficiently collect particles with small diameters, further improving the particle filtration and collection capacity of the entire device. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] FIG1 is a side sectional view of an electronic filtering diesel engine exhaust particulate matter treatment device disclosed in the present invention;

[0026] FIG2 is a schematic structural diagram of a silicon carbide filter screen of an electronic filtering diesel engine exhaust particulate matter treatment device disclosed in the present invention;

[0027] FIG3 is a schematic diagram of an electrode plate collecting particulate matter in an electronic filtering diesel engine exhaust particulate matter treatment device disclosed in the present invention.

[0028] In the figure: 1. Pre-treated exhaust gas inlet; 2. Loaded precious metal catalyst filter; 3. Ceramic fiber filter; 4. Shell; 5. Insulating shell; 6. Electrode plate; 7. Silicon carbide filter; 8. Exhaust gas outlet; 9. First cable; 10. DC regulated power supply; 11. Digital display; 12. Second cable; 13. Electrical connector. DETAILED DESCRIPTION

[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0030] This embodiment provides an electronic filtering diesel engine exhaust particulate matter treatment device, as shown in FIG1 , comprising: a housing 4 , one end of which is an air inlet end and the other end is an air outlet end, and inside the housing 4 , from the air inlet end to the air outlet end, a precious metal-supported catalyst filter 2 , a ceramic fiber filter 3 , an electronic filter chamber, and a silicon carbide filter 7 are sequentially arranged;

[0031] The electronic filter chamber includes an insulating housing 5, in which at least one set of electrode plates 6 is disposed. Each set of electrode plates 6 includes a positive plate and a negative plate parallel to each other. In this embodiment, the positive plate and the negative plate are both flat metal plates with a ceramic substrate. The ceramic substrate has good thermal stability and is suitable for high-temperature exhaust gas treatment.

[0032] This embodiment provides an electronic filtering diesel engine exhaust particulate matter treatment device. A precious metal-loaded catalyst filter 2 is disposed within a housing 4. The precious metal catalyst, which has a strong adsorption capacity and is capable of catalytically oxidizing exhaust particulate matter, adsorbs and catalyzes carbon-based compounds in the particulate matter. The filter and catalyst complement each other, achieving preliminary filtration of larger-diameter particulate matter in the exhaust gas.

[0033] By arranging the ceramic fiber filter 3 inside the housing 4, when the exhaust gas passes through the ceramic fiber filter 3, some particles will experience inertial collision, deposition and interception, and be collected by the pores and fiber surfaces of the ceramic fiber filter 3, thereby achieving further filtration of particles with larger diameters in the exhaust gas. Ceramics have good thermal stability and are suitable for high-temperature exhaust gas treatment.

[0034] By providing an electronic filter chamber with a built-in electrode plate 6 inside the housing 4, a high voltage DC voltage is applied between the positive and negative plates of the electrode plate 6 to ionize part of the air in the exhaust gas, converting the oxygen molecules in the air into active oxygen ions that can attach to the exhaust gas particles, thereby increasing the charge of the exhaust gas particles. A large number of charged particles move and deviate between the positive and negative plates, and are moved to the negative plate by the electric field force and attached to the surface of the negative plate. The exhaust gas particles are filtered and collected by the physical method of electric field force and directional charge movement, thereby achieving filtration of particles with a diameter of 1μm-50μm in the exhaust gas without introducing new chemical elements and avoiding causing new pollution to the environment.

[0035] By arranging the silicon carbide filter 7 inside the housing 4, some of the particles with smaller diameters remaining in the exhaust gas after passing through the electronic filter chamber are adsorbed by the active sites on the silicon carbide surface. At the same time, some of the particles undergo inertial collision when passing through the silicon carbide filter 7, causing them to lose kinetic energy and deposit on the surface of the silicon carbide filter 7, thereby achieving secondary filtration of the particles with smaller diameters in the exhaust gas.

[0036] The precious metal-loaded catalyst filter 2 and the ceramic fiber filter 3 are used to preliminarily filter and collect particles with larger diameters in the exhaust gas, thereby effectively reducing the working pressure of the electronic filter chamber and extending the service life of the electronic filter chamber. At the same time, the electronic filter chamber can efficiently collect particles with small diameters, further improving the particle filtering and collection capacity of the entire device.

[0037] In a specific embodiment, as shown in FIG2 , the silicon carbide filter 7 includes a plurality of parallel arranged wavy hollow tubes, wherein silicon carbide particles are contained inside the wavy hollow tubes, and a plurality of holes are opened on the outer wall of the wavy hollow tubes. The diameter of the silicon carbide particles is larger than the diameter of the holes to prevent the silicon carbide particles from being discharged from the holes.

[0038] To ensure effective filtration, conventional particulate matter traps employ a structure in which multiple layers of filter screens are stacked together. While this improves filtration capacity, it severely obstructs exhaust flow, significantly increasing the pressure in the exhaust system and thus adversely affecting the life of the diesel engine. In this embodiment, the silicon carbide filter screen 7 is constructed using a plurality of parallel, wavy hollow tubes. While maintaining the overall rigidity and contact area of ​​the silicon carbide filter screen 7, this increases exhaust ventilation, thereby reducing pressure drop during exhaust treatment, minimizing the impact on diesel engine exhaust performance, and thereby increasing the life of the diesel engine.

[0039] In this embodiment, as shown in FIG2 , connecting blocks are fixed at both ends of the wavy hollow tubes, and the connecting blocks fix the multiple wavy hollow tubes together.

[0040] In a specific embodiment, as shown in FIG1 , the electrode plate 6 extends along the air inlet direction of the housing 4 . At this time, the electrode plate 6 has the least obstruction to the exhaust gas and the largest contact area with the exhaust gas.

[0041] In this embodiment, the housing 4 is a rectangular housing, and the electrode plate 6 is parallel to the bottom surface of the housing 4 .

[0042] In a specific embodiment, as shown in FIG1 , the air inlet end of the housing 4 is provided with a detachable pre-treated exhaust gas inlet 1, and the air outlet end of the housing 4 is provided with a detachable exhaust gas outlet 8. In this embodiment, the pre-treated exhaust gas inlet 1, the exhaust gas outlet 8 and both ends of the housing 4 are detachably connected by a snap-fit ​​structure or a threaded structure;

[0043] In actual use, the exhaust gas treated with urea is input from the pre-treated exhaust gas inlet 1, and the exhaust gas is filtered and collected from the precious metal loaded catalyst filter 2, the ceramic fiber filter 3, the electronic filter chamber and the silicon carbide filter 7 to collect particulate matter, and then discharged from the exhaust gas outlet 8.

[0044] In a specific embodiment, the supported precious metal catalyst filter 2 is composed of a ceramic substrate and a platinum-palladium supported catalyst. The platinum-palladium catalyst has high activity, high selectivity, good thermal stability and anti-poisoning performance. The ceramic substrate has good thermal stability and is suitable for high-temperature exhaust gas treatment.

[0045] In a specific embodiment, the inner wall of the housing 4 is provided with grooves for respectively installing the precious metal-loaded catalyst filter 2, the ceramic fiber filter 3, the electronic filter chamber and the silicon carbide filter 7, and shock-absorbing pads are provided between the precious metal-loaded catalyst filter 2, the ceramic fiber filter 3, the electronic filter chamber and the silicon carbide filter 7 and the corresponding grooves;

[0046] In this embodiment, each component (the precious metal-loaded catalyst filter screen 2, the ceramic fiber filter screen 3, the electronic filter chamber, and the silicon carbide filter screen 7) can be inserted into the housing 4 from both ends for installation. There is a gap between the outer periphery of each component and its corresponding groove. The gap is filled with a rubber shock-absorbing pad to secure each component within the housing 4, facilitating manufacturing and maintenance.

[0047] As time goes by, the particulate matter accumulated in the device will affect its service life and limit its ability to filter and collect particulate matter. The particulate matter filtering and collecting ability of the device can be restored by replacing the precious metal-loaded catalyst filter 2, the ceramic fiber filter 3 and the silicon carbide filter 7 and cleaning the electrode plate 6. In this embodiment, the insulating shell 5 is provided with slots corresponding to the electrode plates. After the electrode plates 6 are disassembled, they can be rinsed with clean water and dried, and then put back into the slots of the insulating shell 5. This can significantly reduce maintenance costs, extend service life and be more environmentally friendly.

[0048] In a specific embodiment, a buffer foam is provided between the noble metal supported catalyst filter 2 and the ceramic fiber filter 3;

[0049] The cushioning foam and the aforementioned shock-absorbing pad can play a cushioning role, reducing the impact of vibration generated during the operation of the diesel engine on the device, preventing collisions between components and between components and the shell 4, thereby improving the overall stability of the device and extending the overall service life of the device.

[0050] In a specific embodiment, as shown in FIG1 , it further includes a first cable 9 and a DC regulated power supply 10 ;

[0051] One end of the first cable 9 passes through the housing 4 and the insulating shell 5 and is electrically connected to the electrode plate 6, and the other end of the first cable 9 is electrically connected to the DC regulated power supply 10;

[0052] In this embodiment, the DC regulated power supply 10 is fixed to the outer top of the shell 4, and the AC power is converted into the DC power required by the electrode plate 6 for output through the DC regulated power supply 10. The DC regulated power supply 10 is provided with a digital display screen 11, which can display the input voltage and output voltage.

[0053] In a specific embodiment, as shown in FIG1 , a second cable 12 is further included, one end of the second cable 12 is electrically connected to the DC regulated power supply 10 , and the other end of the second cable 12 is electrically connected to the electrical connector 13 ;

[0054] In this embodiment, the electrical connector 13 is a plug, which is connected to an external mains power supply or other AC power source to supply power to the DC regulated power supply 10 .

[0055] The present invention discloses an electronic filtering diesel engine exhaust particulate matter treatment device, which achieves the filtration and collection of particulate matter by the following steps:

[0056] Step 1: Preliminary Filtering

[0057] After the diesel engine exhaust gas pretreated with urea enters the pretreated exhaust gas inlet 1, it will first pass through the loaded precious metal catalyst filter 2 composed of a ceramic substrate and a platinum-palladium loaded catalyst. The loaded precious metal catalyst filter 2 has a grid structure. Through the mesh holes of the grid structure, the exhaust gas can flow freely through the loaded precious metal catalyst filter 2, and some particulate matter is collected and remains on the surface of the loaded precious metal catalyst filter 2.

[0058] The exhaust gas passes through the supported precious metal catalyst filter 2 and enters the ceramic fiber filter 3. The ceramic fiber filter 3 has a porous structure to ensure smooth passage of the exhaust gas. The pore size of the ceramic fiber filter 3 can be optimized according to the size of the target particles to maximize the collection of particles.

[0059] The ceramic fiber filter 3 is made of high-temperature-resistant ceramic fiber material. Its fibers and pores allow exhaust gas to pass through while trapping some larger particles. As exhaust gas passes through the filter, some particles experience inertial collision, deposition, and interception, ultimately being collected by the pores and fiber surfaces.

[0060] The particulate matter in the diesel engine exhaust is initially filtered by the loaded precious metal catalyst filter 2 and the ceramic fiber filter 3. The structure and material properties of the loaded precious metal catalyst filter 2 and the ceramic fiber filter 3 ensure the collection of larger diameter particles (larger diameter particles in the present invention refer to particles >50μm).

[0061] Step 2: Electronic Filtering

[0062] The particulate matter enters the electronic filter chamber along with the exhaust gas. The high-voltage DC voltage between the positive plate and the negative plate of the electrode plate 6 in the electronic filter chamber ionizes part of the air in the exhaust gas. A large number of charged particles will gather around the ionized air. The positive ions will move toward the negative plate under the action of the electric field force. During the movement, they will collide with the exhaust gas particulate matter and adhere to the surface of the particulate matter. The charged particulate matter will move and deviate between the positive plate and the negative plate. The direction of the electric field force on the positive charge carried by the particulate matter is in the same direction as the direction of the electric field line. The particulate matter is moved to the negative plate under the action of the electric field force and adheres to the surface of the negative plate, completing the collection of the particulate matter.

[0063] Since the diameters of the particles vary, the time it takes to reach the motion offset condition is also inconsistent. Under the premise that cost and installation space allow, the area of ​​contact between the electrode plate 6 and the exhaust gas should be as large as possible. In the present invention, in order to take into account both the collection effect and the pressure drop, and considering the size of the diesel engine actually used on site, as shown in Figure 1, three groups of electrode plates 6 are set in the insulating housing 5 to collect and process the particulate matter in the exhaust gas to improve the collection efficiency. Those skilled in the art can increase or decrease the number of groups of electrode plates 6 according to the size of the diesel engine actually used. The arrangement of the electrode plates 6 should ensure that the positive plates and negative plates of each adjacent group of electrode plates 6 are staggered, one positive, one negative, one positive, one negative..., and under the premise that the installation space allows, the spacing between adjacent groups of electrode plates 6 is as equal as possible.

[0064] The motion trajectory of charged particles within the electronic filter chamber is complex, influenced by factors such as gravity, air friction, electric field forces, particle collisions, and inertia. However, as particles move between the positive and negative plates, their velocity perpendicular to the planar electrodes increases continuously with the acceleration caused by the constant electric field force. A schematic diagram of particle collection and capture is shown in Figure 3 (the upper portion of Figure 3 shows the positive plate, and the lower portion of Figure 3 shows the negative plate). Those skilled in the art can improve the particle collection efficiency by optimizing the plate length L, plate distance d, and fixed voltage difference V according to actual needs, so that diesel exhaust particles can be effectively collected on the negative plate.

[0065] The electrode plate 6 uses the physical method of electric field force and directional movement of electric charges to filter and collect exhaust particulate matter. Without introducing new chemical elements and avoiding causing new pollution to the environment, it can filter particulate matter with a diameter of 1μm-50μm in the exhaust gas. At the same time, since the electrode plate 6 has little obstruction to the flow of exhaust gas, it can effectively reduce the exhaust pressure drop of the diesel engine.

[0066] Step 3: Silicon Carbide Filtration

[0067] Diesel engine exhaust leaving the electronic filter chamber enters silicon carbide filter 7 for final exhaust filtration. Silicon carbide filter 7 is used to collect smaller particles (in this context, smaller particles are defined as particles between 1μm and 50μm). To balance the contact area for collecting particles and minimizing exhaust pressure drop, silicon carbide filter 7 comprises multiple parallel, wavy hollow tubes. As exhaust passes through silicon carbide filter 7, particles enter the pores of the wavy hollow tubes, where they are adsorbed by the silicon carbide particles and physically blocked by the tubes.

[0068] The high specific surface area of ​​the wavy hollow tube and the multiple holes provided therein provide sufficient contact area for particles to be collected by the silicon carbide filter 7. Some smaller particles are adsorbed by the active sites on the surface of the silicon carbide particles. Simultaneously, some smaller particles undergo inertial collision and deposition as they pass through the silicon carbide filter 7. Once inside the wavy hollow tube, the exhaust gas is blocked by the silicon carbide particles, causing its airflow velocity and direction to change. This makes it more likely for particles to collide with the surface of the silicon carbide filter 7, causing them to lose kinetic energy and settle on the surface.

[0069] Step 4: Exhaust

[0070] The exhaust gas after particulate matter is filtered out by the silicon carbide filter 7 is discharged from the exhaust outlet 8. In actual use, a flange is provided at the end of the exhaust outlet 8 away from the shell 4, which can be connected to the exhaust pipe through the flange to facilitate adjustment of the position and direction of diesel engine exhaust emission, or the treated exhaust gas can be discharged into downstream equipment (such as exhaust waste heat recovery device) through the flange.

[0071] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An electronic filtering diesel engine exhaust particulate matter treatment device, characterized in that: include: A shell (4), one end of the shell (4) being an air inlet end and the other end being an air outlet end, and the inside of the shell (4) being provided with a noble metal-supported catalyst filter (2), a ceramic fiber filter (3), an electronic filter chamber and a silicon carbide filter (7) in sequence from the air inlet end to the air outlet end; The electronic filter chamber comprises an insulating shell (5), wherein at least one group of electrode plates (6) is arranged inside the insulating shell (5), and each group of electrode plates (6) comprises a positive plate and a negative plate which are parallel to each other.

2. The electronic filtering diesel engine exhaust particulate matter treatment device according to claim 1, characterized in that: The silicon carbide filter (7) comprises a plurality of parallel arranged wavy hollow tubes, wherein silicon carbide particles are contained in the wavy hollow tubes, and a plurality of holes are formed on the outer wall of the wavy hollow tubes, wherein the diameter of the silicon carbide particles is greater than the diameter of the holes.

3. The electronic filtering diesel engine exhaust particulate matter treatment device according to claim 1, characterized in that: The electrode plate (6) extends along the air inlet direction of the shell (4).

4. The electronic filtering diesel engine exhaust particulate matter treatment device according to claim 1, characterized in that: The air inlet end of the shell (4) is provided with a detachable pre-treated exhaust gas inlet port (1), and the air outlet end of the shell (4) is provided with a detachable exhaust gas outlet port (8).

5. The electronic filtering diesel engine exhaust particulate matter treatment device according to claim 1, characterized in that: The supported noble metal catalyst filter screen (2) is composed of a ceramic substrate and a platinum-palladium supported catalyst.

6. The electronic filtering diesel engine exhaust particulate matter treatment device according to claim 1, characterized in that: The inner wall of the shell (4) is provided with grooves for respectively installing the noble metal-loaded catalyst filter (2), the ceramic fiber filter (3), the electronic filter chamber and the silicon carbide filter (7), and shock-absorbing pads are provided between the noble metal-loaded catalyst filter (2), the ceramic fiber filter (3), the electronic filter chamber and the silicon carbide filter (7) and the corresponding grooves.

7. The electronic filtering diesel engine exhaust particulate matter treatment device according to claim 1, characterized in that: A buffer foam is provided between the noble metal-loaded catalyst filter (2) and the ceramic fiber filter (3).

8. The electronic filtering diesel engine exhaust particulate matter treatment device according to claim 1, characterized in that: It also includes a first cable (9) and a DC regulated power supply (10); One end of the first cable (9) is electrically connected to the electrode plate (6) after passing through the shell (4) and the insulating shell (5), and the other end of the first cable (9) is electrically connected to the DC regulated power supply (10).

9. The electronic filtering diesel engine exhaust particulate matter treatment device according to claim 8, characterized in that: It also includes a second cable (12), one end of the second cable (12) is electrically connected to the DC regulated power supply (10), and the other end of the second cable (12) is electrically connected to the electrical connector (13).

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