Tail gas particulate matter purification device for heavy diesel vehicle

Abstract

The utility model relates to the technical field of tail gas treatment, and discloses a heavy diesel vehicle tail gas particulate matter purification device. The inlet end of an air inlet cylinder is provided with an air inlet pipe matched with an exhaust port of a diesel vehicle engine; the outlet end of the air inlet cylinder is connected with the inlet end of the baffling purification cylinder, a baffling plate is arranged in the baffling purification cylinder, the edges of an inlet and an outlet at two ends of the baffling plate are fixed with the baffling purification cylinder through a baffle plate, an oil collecting groove is communicated below the baffling plate, and the oil collecting groove is communicated with a blow-off pipe penetrating through the baffling purification cylinder; the outlet end of the baffling purification cylinder is connected with the inlet end of the filter cylinder, and a filter element is mounted in the filter cylinder; the outlet end of the filter cartridge is connected with the inlet section of an exhaust funnel; an exhaust pipe is mounted at the tail end of the exhaust funnel. The device can efficiently remove oil and particulate matters in tail gas, and can keep long-time low-back-pressure operation. The device has the advantages of high purification efficiency, long continuous operation time, high reliability, compact structure, convenience in disassembly and assembly and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of exhaust gas treatment, in particular to a vehicle exhaust gas treatment device, specifically a heavy-duty diesel vehicle exhaust gas particulate matter purification device. Background Art

[0002] Diesel engines are powerful, adaptable, and reliable, and are widely used in various heavy-duty vehicles. However, the exhaust gas emitted by diesel engines contains a large amount of particulate matter, which causes the diesel engine to emit a large amount of black smoke when it is working, accompanied by a large amount of unburned oil and other sticky substances.

[0003] At present, the diesel vehicle exhaust purification devices on the market are all products for civilian engines, and most of them adopt combined processes such as DOC+DPF, DOC+DPF+SCR, etc. Such products have problems such as easy clogging of DPF filter element, rapid increase of resistance, and even affecting the normal operation of vehicle engines. In addition, such products are not suitable for exhaust absorption of high-power diesel vehicles. There is no suitable device to treat the exhaust of high-power diesel vehicles, resulting in the discharge of a large amount of unburned oil and particulate matter when heavy vehicles are started, causing environmental pollution.

[0004] Therefore, it is urgent to develop a particulate matter purification device that is tailored to the exhaust characteristics of high-power diesel vehicles and can operate stably for a long time. Summary of the invention

[0005] In order to solve the problem that there is no suitable purification device for the exhaust treatment of current high-power diesel vehicles, and in actual use, the diesel engine exhaust contains a large amount of particulate matter, emits a large amount of black smoke, and is accompanied by a large amount of unburned oil and other viscous substances, which pollutes the environment, the utility model provides a heavy-duty diesel vehicle exhaust particulate matter purification device.

[0006] The utility model is implemented by the following technical solutions:

[0007] A device for purifying exhaust particulate matter of heavy-duty diesel vehicles comprises an air intake cylinder, the inlet end of which is provided with an air intake pipe cooperating with the exhaust port of the diesel vehicle engine; the outlet end of the air intake cylinder is connected with the inlet end of a baffle purification cylinder, a baffle is provided in the baffle purification cylinder, the inlet and outlet edges of the two ends of the baffle are fixed to the baffle purification cylinder by a baffle, an oil collecting trough is connected below the baffle, and the oil collecting trough is connected with a sewage pipe passing through the baffle purification cylinder; the outlet end of the baffle purification cylinder is connected with the inlet end of a filter cylinder, a filter element is installed in the filter cylinder; the outlet end of the filter cylinder is connected with the inlet section of an exhaust cylinder, and an exhaust pipe is installed at the end of the exhaust cylinder.

[0008] When implemented, it includes an air intake cylinder, the inlet end of which is provided with an air intake pipe that matches the exhaust port of the diesel vehicle engine;

[0009] The outlet end of the air inlet cylinder is connected to the inlet end of the baffle purification cylinder. A baffle is provided inside the baffle purification cylinder. The inlet and outlet edges of both ends of the baffle are fixed to the baffle purification cylinder through baffles. An oil collecting tank is connected below the baffle. The oil collecting tank is connected to a sewage pipe passing through the baffle purification cylinder. The sewage pipe is installed at the lowest point of the oil collecting tank to facilitate emptying of the oil collecting tank.

[0010] The outlet end of the baffle purification cartridge is connected to the inlet end of the filter cartridge. A filter element is installed in the filter cartridge. The filter element includes several layers of annular filter felts arranged in concentric circles. The annular filter felts are made of metal sintering and have a filtration accuracy of 5 to 30 microns. A sealing ring is arranged between two adjacent layers of annular filter felts. The sealing rings are arranged at intervals at both ends of the annular gap of the annular filter felts. The annular filter felts are provided with an even number of layers. A circular sealing plate is provided on the inner side of the head end of the annular filter felt located in the center, and a sealing ring is provided on the outer side of the annular filter felt located in the outermost circle. The edge of the sealing ring located in the outermost circle is clamped and fixed between the baffle purification cartridge and the filter cartridge.

[0011] The outlet end of the filter cartridge is connected to the inlet section of the exhaust cartridge. The air intake cartridge and the baffle purification cartridge, the baffle purification cartridge and the filter cartridge, and the filter cartridge and the exhaust cartridge are all connected by clamps. An exhaust pipe is installed at the end of the exhaust cartridge. The diameter of the exhaust pipe is larger than that of the air intake pipe, and the rear section of the exhaust pipe is bent downward.

[0012] When in use, the device is installed at the exhaust port of a high-power diesel vehicle engine, so that the engine exhaust port is connected to the intake pipe. The exhaust gas discharged by the engine enters the intake cylinder from the intake pipe and is then blocked by the baffle. All the gas enters the baffle purification cylinder from the gap between the baffles, passes between the baffles, repeatedly changes the direction of the airflow, and uses centrifugal action to remove oil and sticky particles in the exhaust gas. Large particles of oil and sticky substances are thrown onto the baffles to achieve primary purification, reduce the load of the subsequent filter cylinder, prevent the filter element from being blocked by sticky substances, and the separated oil and other substances are removed in the baffles. The collected oil droplets flow downward and drop into the oil collecting tank, where they are collected and discharged through the drain pipe. Subsequently, the exhaust gas enters the filter cartridge and passes through the filter element in the filter cartridge, that is, the gas enters from the annular gap of the annular filter felt, encounters a sealing ring at the tail end and passes through the annular filter felt, and passes through the annular gap of the adjacent annular filter felt through the deflection purification cartridge. The exhaust gas is filtered by metal sintered felt, which can remove more than 99% of the particulate matter in the exhaust gas. Finally, the purified exhaust gas is discharged from the exhaust pipe, that is, from the exhaust pipe.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The utility model provides a device for purifying particulate matter in exhaust gas of heavy-duty diesel vehicles. By arranging baffles, the airflow direction is repeatedly changed, and the oil and sticky particulate matter in the exhaust gas are removed by centrifugal action, so as to preliminarily purify the exhaust gas, effectively remove the oil and sticky substances, reduce the load of the subsequent filter cartridge, and prevent the filter element from being blocked by the sticky substances. At the same time, the oil collecting trough and sewage outlet are arranged at the bottom of the purification cartridge to facilitate the collection and discharge of pollutants. By arranging a filter cartridge with a metal filter element, the particulate matter in the exhaust gas can be efficiently purified, and the multi-layer annular structure is adopted to effectively increase the filtering area.

[0015] This device adopts an integrated structural design and is suitable for the exhaust treatment of high-power diesel vehicles. It can efficiently remove oil and particulate matter in the exhaust gas and maintain long-term low back pressure operation. It has the advantages of high purification efficiency, long continuous operation time, high reliability, compact structure, and convenient disassembly and assembly, meeting the black smoke purification needs of mobile source high-power diesel vehicles. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram showing the overall structure of the device.

[0017] Figure 2 A schematic diagram showing the structure of a baffled purification cartridge.

[0018] Figure 3 A cross-sectional view showing a baffle purification cartridge.

[0019] Figure 4 A schematic diagram showing the structure of a filter cartridge.

[0020] Figure 5 A cross-sectional view showing a filter cartridge.

[0021] In the figure: 1-intake cylinder, 101-intake pipe, 2-baffle purification cylinder, 3-filter cylinder, 4-clamp, 5-exhaust cylinder, 501-exhaust pipe, 6-baffle, 7-drain pipe, 8-baffle, 9-oil collecting tank, 10-sealing ring, 11-annular filter felt, 12-sealing plate. DETAILED DESCRIPTION

[0022] The specific embodiments of the present utility model are described below in conjunction with the accompanying drawings.

[0023] A heavy-duty diesel vehicle exhaust particulate matter purification device, such as Figures 1 to 5 As shown: it includes an air intake cylinder 1, the inlet end of the air intake cylinder 1 is provided with an air intake pipe 101 that matches the exhaust port of the diesel vehicle engine;

[0024] The outlet end of the air inlet cylinder 1 is connected to the inlet end of the baffle purification cylinder 2, such as Figure 2 , 3As shown: a baffle plate 8 is provided in the baffle purification cylinder 2, and the inlet and outlet edges of both ends of the baffle plate 8 are fixed to the baffle purification cylinder 2 through a baffle plate 6, and an oil collecting tank 9 is connected below the baffle plate 8, and the oil collecting tank 9 is connected to a sewage pipe 7 passing through the baffle purification cylinder 2, and the sewage pipe 7 is installed at the lowest point of the oil collecting tank 9 to facilitate the emptying of the oil collecting tank 9;

[0025] The outlet end of the baffle purification cartridge 2 is connected to the inlet end of the filter cartridge 3. A filter element is installed in the filter cartridge 3. The filter element includes several layers of annular filter felts 11 arranged in concentric circles. The annular filter felts 11 are made of metal sintering and have a filtering accuracy of 5 to 30 microns. A sealing ring 10 is arranged between two adjacent layers of annular filter felts. The sealing rings 10 are arranged at intervals at both ends of the annular gap of the annular filter felts 11. The annular filter felts 11 are provided with an even number of layers. A circular sealing plate 12 is provided on the inner side of the head end of the annular filter felt 11 located in the center. A sealing ring 10 is provided on the outer side of the annular filter felt 11 located in the outermost circle. The edge of the sealing ring 10 located in the outermost circle is clamped and fixed between the baffle purification cartridge 2 and the filter cartridge 3.

[0026] The outlet end of the filter cartridge 3 is connected to the inlet section of the exhaust cartridge 5, such as Figure 4 , 5 As shown: the air intake cylinder 1 and the deflector purification cylinder 2, the deflector purification cylinder 2 and the filter cylinder 3, and the filter cylinder 3 and the exhaust cylinder 5 are all connected by a clamp 4. An exhaust pipe 501 is installed at the end of the exhaust cylinder 5. The diameter of the exhaust pipe 501 is larger than the air intake pipe 101, and the rear section of the exhaust pipe 501 is bent downward.

[0027] When in use, the device is installed at the exhaust port of a high-power diesel vehicle engine, so that the engine exhaust port is connected to the intake pipe 101. The exhaust gas discharged by the engine enters the intake cylinder 1 through the intake pipe 101, and is then blocked by the baffle 6. All the gas enters the baffle purification cylinder 2 from the gap between the baffle plates 8, passes between the baffle plates 8, repeatedly changes the direction of the airflow, and utilizes the centrifugal effect to remove the oil and sticky particles in the exhaust gas. Large particles of oil and sticky substances are thrown onto the baffle plates 8 to achieve primary purification, reduce the load of the subsequent filter cartridge, and prevent the filter element from being blocked by sticky substances. The separated oil and the like are continuously gathered on the baffle plates 8 and converged. The collected oil droplets flow downward and drop into the oil collecting tank 9, where they are collected in the oil collecting tank 9 arranged at the bottom and discharged through the sewage pipe 7. Subsequently, the exhaust gas enters the filter cartridge 3, passes through the filter element in the filter cartridge 3, that is, the gas enters from the annular gap of the annular filter felt 11, and meets the sealing ring 10 at the tail end, and then passes through the annular filter felt 11, and passes through the annular gap of the adjacent annular filter felt 11 through the deflection purification cartridge 2. The exhaust gas is filtered by the annular filter felt made of metal sintering, and has a large filtering area, so that more than 99% of the particulate matter in the exhaust gas can be removed. Finally, the purified exhaust gas is discharged from the exhaust cartridge 5, that is, from the exhaust pipe 501.

[0028] The scope of protection claimed by the present invention is not limited to the above specific implementation methods. For those skilled in the art, the present invention may have various deformations and changes. Any modification, improvement and equivalent substitution made within the concept and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A heavy-duty diesel vehicle exhaust particulate matter purification device, characterized in that: It comprises an air intake cylinder (1), wherein the inlet end of the air intake cylinder (1) is provided with an air intake pipe (101) that matches with the exhaust port of the diesel vehicle engine; The outlet end of the air inlet cylinder (1) is connected to the inlet end of the baffle purification cylinder (2); a baffle plate (8) is provided inside the baffle purification cylinder (2); the inlet and outlet edges of both ends of the baffle plate (8) are fixed to the baffle purification cylinder (2) via a baffle plate (6); an oil collecting trough (9) is connected below the baffle plate (8); and the oil collecting trough (9) is connected to a sewage discharge pipe (7) passing through the baffle purification cylinder (2); The outlet end of the baffle purification cartridge (2) is connected to the inlet end of the filter cartridge (3), and a filter element is installed in the filter cartridge (3); The outlet end of the filter cartridge (3) is connected to the inlet section of the exhaust cartridge (5), and an exhaust pipe (501) is installed at the end of the exhaust cartridge (5).

2. A heavy-duty diesel vehicle exhaust particulate matter purification device according to claim 1, characterized in that: The air inlet cylinder (1) and the baffle purification cylinder (2), the baffle purification cylinder (2) and the filter cylinder (3), and the filter cylinder (3) and the exhaust cylinder (5) are all connected via clamps (4).

3. A heavy-duty diesel vehicle exhaust particulate matter purification device according to claim 1, characterized in that: The filter element comprises a plurality of layers of annular filter felt (11) arranged in concentric circles, a sealing ring (10) being provided between two adjacent layers of annular filter felt, and the sealing ring (10) being arranged at intervals at both ends of the annular gap of the annular filter felt (11).

4. A heavy-duty diesel vehicle exhaust particulate matter purification device according to claim 3, characterized in that: The annular filter felt (11) is made of metal sintering.

5. A heavy-duty diesel vehicle exhaust particulate matter purification device according to claim 3, characterized in that: The annular filter felt (11) is provided with an even number of layers, a circular sealing plate (12) is provided on the inner side of the head end of the annular filter felt (11) located in the center, and a sealing ring (10) is provided on the outer side of the annular filter felt (11) located in the outermost circle.

6. A heavy-duty diesel vehicle exhaust particulate matter purification device according to claim 5, characterized in that: The edge of the sealing ring (10) located at the outermost circle is clamped and fixed between the baffle purification cylinder (2) and the filter cylinder (3).

7. A heavy-duty diesel vehicle exhaust particulate matter purification device according to claim 1, characterized in that: The sewage discharge pipe (7) is installed at the lowest point of the oil collecting tank (9).

8. A heavy-duty diesel vehicle exhaust particulate matter purification device according to claim 1, characterized in that: The diameter of the exhaust pipe (501) is larger than that of the intake pipe (101).

9. A heavy-duty diesel vehicle exhaust particulate matter purification device according to claim 7, characterized in that: The rear section of the exhaust pipe (501) is bent downward.

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