CN106968761B - Self-generating negative pressure diesel motor vehicle tail gas particle capturing device - Google Patents
Self-generating negative pressure diesel motor vehicle tail gas particle capturing device Download PDFInfo
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- CN106968761B CN106968761B CN201710273144.8A CN201710273144A CN106968761B CN 106968761 B CN106968761 B CN 106968761B CN 201710273144 A CN201710273144 A CN 201710273144A CN 106968761 B CN106968761 B CN 106968761B
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- Prior art keywords
- reducing
- pressure
- tail gas
- pipe
- speed
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/022—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/08—Other arrangements or adaptations of exhaust conduits
Abstract
The self-generating negative pressure diesel motor vehicle tail gas particle capturing device reduces the flowing pressure and the flowing speed of tail gas through the combined application of the gas ejector, the speed reduction and pressure reduction pipe nozzle pipe, the high-density filter screen and the like, tail gas particles flowing at low speed and low pressure can be separated from the tail gas and are guided by the filter cone net to enter the negative pressure filter collecting net cylinder, so that the tail gas particles can be effectively collected, the flow direction of the tail gas is changed through the one-way control valve, a small amount of tail gas particles adhered to the filter cone net are automatically cleaned, the filter cone net is prevented from being blocked, and finally clean and environment-friendly tail gas is discharged from the tail gas outlet. The particle filter can solve the problem that the particle filter is easy to block in the prior art route, and has the characteristics of low production cost and long service life.
Description
Technical Field
The invention relates to a diesel motor vehicle exhaust particle capturing device, in particular to a self-generated negative pressure diesel motor vehicle exhaust particle capturing device.
Background
The discharge amount of nitrogen oxides and particulate matters in the tail gas of the diesel motor vehicle accounts for more than 95 percent of the discharge amount of pollutants of all vehicles, so the treatment of the tail gas pollutants of the diesel motor vehicle naturally focuses on the two pollutants of the nitrogen oxides and the particulate matters. At present, the post-treatment technical route of the national fifth emission of the diesel motor vehicle is a mode of EGR (exhaust gas recirculation technology) + DOC (oxidation type catalytic converter) + DPF (particulate filter), and the post-treatment technical route of the national sixth emission is a mode of EGR + DOC + DPF + SCR (catalytic reduction), so that the device is easily blocked by tail gas particles, and the service life of the device is influenced.
Disclosure of Invention
The invention aims to provide the self-generated negative pressure diesel motor vehicle exhaust particle capturing device which can solve the problem that a particle filter is easy to block in the prior art route, and has low production cost and long service life.
The invention relates to a tail gas particle catching device of a self-generated negative pressure diesel motor vehicle, which comprises an air inlet pipe, a one-way control valve, a speed-reducing and pressure-reducing nozzle pipe, a negative pressure particle collecting cylinder and a gas ejector, and is characterized in that two groups of speed-reducing and pressure-reducing nozzle pipes with the same structure and the same quantity are uniformly and reversely arranged in a separation cavity in a staggered way; the speed-reducing and pressure-reducing nozzle pipe comprises a pressure-reducing outer pipe and a pressure-reducing inner pipe which are coaxial, the front section of the pressure-reducing inner pipe is arranged in the pressure-reducing outer pipe, the inner cavities of the two pipes are communicated, the front end of the pressure-reducing outer pipe is provided with a filtering conical net, and more than two backflow holes which are uniformly distributed are arranged between the rear end of the pressure-reducing outer pipe and the outer side surface of the pressure-; the air inlets at the rear ends of the two groups of pressure reduction inner pipes are respectively communicated with the left independent air chamber and the right independent air chamber, and the left independent air chamber and the right independent air chamber are respectively connected with an air inlet pipe through one-way control valves; axial air outlets of the filtering conical nets on the pressure reduction outer pipe are connected to a negative pressure particle collecting cylinder, and a filtering pipe in the negative pressure particle collecting cylinder is connected with an external negative pressure conduit insertion end; the return holes of the two groups of speed-reducing and pressure-reducing nozzle pipes are respectively communicated with the left air purifying chamber and the right air purifying chamber, and the left air purifying chamber and the right air purifying chamber are connected into the main conduit through the one-way control valve; the main conduit and the negative pressure conduit are respectively connected with a main inlet and a negative pressure inlet of the gas ejector.
The invention relates to a tail gas particle catching device of a self-generated negative pressure diesel motor vehicle, which is characterized in that a gas ejector, a speed-reducing and pressure-reducing nozzle pipe, a high-density stainless steel speed-reducing and pressure-reducing cone net, a negative pressure particle high-density collecting net cylinder and other mechanical components are combined and applied to reduce the flowing pressure and flowing speed of tail gas, the flowing direction of the gas is changed by the tail gas flowing at low speed and low pressure through a one-way control valve, a small amount of tail gas particles adsorbed on the cone net can be self-cleaned, the cone net is prevented from being blocked, and finally clean and environment-; compared with the prior art, the invention can normally and effectively collect tail gas particles only by the inflow of tail gas without additional energy and rare noble metals, has low production cost and long service life, and can replace a silencer.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the construction of a component speed-reducing and pressure-reducing nozzle tube of the present invention;
FIG. 3 is a side schematic view of FIG. 2;
FIG. 4 is a schematic view of the gas eductor part of the present invention;
1. the device comprises an air inlet pipe, 2, a speed-reducing and pressure-reducing nozzle pipe, 3, a gas ejector, 4, a right air purifying chamber, 5, a right independent air chamber, 6, a one-way control valve I, 7, a one-way control valve II, 8, an air inlet branch pipe, 9, a filter pipe, 10, a negative pressure particle collecting cylinder, 11, a negative pressure guide pipe, 12, a left independent air chamber, 13, a left air purifying chamber, 14, a separation cavity, 15, a main guide pipe, 16, a three-way control valve, 17, a four-way control valve, 21, an air inlet, 22, a pressure-reducing inner pipe, 23, an axial air outlet, 24, a filter cone net, 25, a pressure-reducing outer pipe, 26, a backflow hole, 31, a main inlet, 32, a negative pressure inlet, 33, a.
Detailed Description
A self-generating negative pressure diesel motor vehicle tail gas particle catching device comprises an air inlet pipe 1, a one-way control valve, a speed-reducing and pressure-reducing nozzle pipe 2, a negative pressure particle collecting cylinder 10 and a gas ejector 3, and is characterized in that the four speed-reducing and pressure-reducing nozzle pipes 2 with the same structure are divided into two left speed-reducing and pressure-reducing nozzle pipes and two right speed-reducing and pressure-reducing nozzle pipes, and the left speed-reducing and pressure-reducing nozzle pipes and the right speed-reducing and pressure-reducing nozzle pipes are installed in a separation cavity 14 in a staggered and reverse mode; the speed-reducing and pressure-reducing nozzle pipe 2 comprises a pressure-reducing outer pipe 25 and a pressure-reducing inner pipe 22 which are coaxial, the front section of the pressure-reducing inner pipe 22 is arranged in the pressure-reducing outer pipe 25, the inner cavities of the two pipes are communicated, the front end of the pressure-reducing outer pipe 25 is provided with a filtering conical net 24, and more than two backflow holes 26 which are uniformly distributed are arranged between the rear end of the pressure-reducing outer pipe 25 and the outer side surface of the pressure-reducing; the air inlet 21 at the rear end of the pressure reducing inner tube 22 of the right speed reducing and pressure reducing nozzle tube is communicated with the right independent air chamber 5, the air inlet 21 at the rear end of the pressure reducing inner tube 22 of the left speed reducing and pressure reducing nozzle tube is communicated with the left independent air chamber (12), the left independent air chamber 12 is connected with the air inlet tube 1 through the air inlet branch tube 8 and the one-way control valve II 7, and the right independent air chamber 5 is connected with the air inlet tube 1 through the one-way control valve I6; axial air outlets 23 of the filtering conical net 24 on the pressure reducing outer pipe 25 are connected to the negative pressure particle collecting cylinder 10, and a filtering pipe 9 in the negative pressure particle collecting cylinder 10 is connected with an insertion end of an external negative pressure conduit 11; the return hole 26 of the right speed-reducing pressure-reducing nozzle pipe is communicated with the right air-purifying chamber 4, the return hole 26 of the left speed-reducing pressure-reducing nozzle pipe is communicated with the left air-purifying chamber 13, and the left air-purifying chamber 13 and the right air-purifying chamber 4 are respectively connected into the main guide pipe 15 through a three-way control valve 16 and a four-way control valve 17; the main duct 15 and the negative pressure duct 11 are respectively connected to a main inlet 31 and a negative pressure inlet 32 of the gas ejector 3. The one-way control valve I6 and the one-way control valve III 16 are opened and closed at the same time, the one-way control valve II 7 and the one-way control valve IV 17 are opened and closed at the same time, and only one of the two groups of one-way control valves can be opened when in work.
The invention relates to a self-generating negative pressure diesel motor vehicle tail gas particle capture device, which is a closed device sleeved with only one tail gas inlet and one tail gas outlet, wherein the tail gas inlet is connected with an engine exhaust manifold, the tail gas of a diesel motor vehicle is filtered by negative pressure, and the tail gas discharged from the tail gas outlet is clean and environment-friendly.
The principle of the operation of the device is described below. The tail gas has two one-way flow filtering paths in the device due to the single speed-reducing and pressure-reducing nozzle pipe group, only one of the two one-way flow filtering paths is described here, as shown in fig. 1, when the engine tail gas enters from the tail gas inlet pipe 1, the one-way control valve one 6 and the one-way control valve three 16 are opened, and the one-way control valve two 7 and the one-way control valve four 17 are closed. Engine tail gas flows into the right independent air chamber 5 through the one-way control valve 6, the gas enters through the gas inlet 21 of the one-way speed reduction pressure reduction nozzle pipe 2, the gas is subjected to speed reduction pressure reduction through the filtering cone net 24 and is divided into gas a and gas b, the particles and the gas are separated to a certain degree at the position of the filtering cone net 24, the flow rate of the gas a flowing out through the cone net is reduced to a certain degree, the tail gas particles are not easy to adhere to and block the filtering cone net 24, the gas a smoothly flows into the left air purifying chamber 13 through the backflow hole 26 on the reverse speed reduction pressure reduction nozzle pipe 2, and the gas a flows into the gas ejector 3 through the main guide pipe 15 and simultaneously enables the negative pressure guide pipe 11 connected with the gas ejector 3 to generate negative pressure. The other part of gas b flows into the negative pressure particle collecting cylinder 10 through the axial gas outlet 23 of the monomer speed-reducing and pressure-reducing nozzle pipe group and carries tail gas particles separated and filtered by the filter cone net 24, the tail gas is filtered and purified through the filter pipe 9, the filtered and purified tail gas enters the negative pressure guide pipe 11 and enters the gas ejector 3, the particles are effectively collected in the negative pressure particle collecting cylinder 10, the gas a and the gas b become clean and environment-friendly tail gas, and finally the gas is discharged from the tail gas outlet 33.
Claims (2)
1. The utility model provides a self-generating negative pressure diesel motor vehicle tail gas particle trapping apparatus, includes intake pipe (1), one-way control valve, speed reduction step-down nozzle pipe (2), negative pressure particle collection section of thick bamboo (10), gas ejector (3), its characterized in that: the four speed-reducing pressure-reducing nozzle pipes (2) with the same structure are divided into two left speed-reducing pressure-reducing nozzle pipes and two right speed-reducing pressure-reducing nozzle pipes, and the left speed-reducing pressure-reducing nozzle pipes and the right speed-reducing pressure-reducing nozzle pipes are alternately and reversely arranged in the separation cavity (14); the speed-reducing and pressure-reducing nozzle pipe (2) comprises a pressure-reducing outer pipe (25) and a pressure-reducing inner pipe (22) which are coaxial, the front section of the pressure-reducing inner pipe (22) is arranged in the pressure-reducing outer pipe (25), the inner cavities of the two pipes are communicated, the front end of the pressure-reducing outer pipe (25) is provided with a filtering conical net (24), and more than two reflux holes (26) which are uniformly distributed are arranged between the rear end of the pressure-reducing outer pipe (25) and the outer side surface of the pressure-reducing inner pipe; an air inlet (21) at the rear end of a pressure reducing inner tube (22) of the right speed reducing and pressure reducing nozzle tube is communicated with a right independent air chamber (5), the air inlet (21) at the rear end of the pressure reducing inner tube (22) of the left speed reducing and pressure reducing nozzle tube is communicated with a left independent air chamber (12), the left independent air chamber (12) is connected with an air inlet tube (1) through an air inlet branch tube (8) and a one-way control valve II (7), and the right independent air chamber (5) is connected with the air inlet tube (1) through a one-way control valve I (6); axial air outlets (23) of a filtering conical net (24) on a pressure reducing outer pipe (25) are connected into a negative pressure particle collecting cylinder (10), and a filtering pipe (9) in the negative pressure particle collecting cylinder (10) is connected with an insertion end of an external negative pressure conduit (11); the return hole (26) of the right speed-reducing pressure-reducing nozzle pipe is communicated with the right air purifying chamber (4), the return hole (26) of the left speed-reducing pressure-reducing nozzle pipe is communicated with the left air purifying chamber (13), and the left air purifying chamber (13) and the right air purifying chamber (4) are respectively connected into the main guide pipe (15) through a one-way control valve III (16) and a one-way control valve IV (17); the main duct (15) and the negative pressure duct (11) are respectively connected with a main inlet (31) and a negative pressure inlet (32) of the gas ejector (3).
2. The autogenous negative pressure diesel vehicle exhaust particle trap of claim 1, wherein: the one-way control valve I (6) and the one-way control valve III (16) are closed, opened and closed simultaneously, the one-way control valve II (7) and the one-way control valve IV (17) are closed, opened and closed simultaneously, and only one of the two groups of one-way control valves can be opened when working.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710273144.8A CN106968761B (en) | 2017-04-25 | 2017-04-25 | Self-generating negative pressure diesel motor vehicle tail gas particle capturing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710273144.8A CN106968761B (en) | 2017-04-25 | 2017-04-25 | Self-generating negative pressure diesel motor vehicle tail gas particle capturing device |
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| Publication Number | Publication Date |
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| CN106968761A CN106968761A (en) | 2017-07-21 |
| CN106968761B true CN106968761B (en) | 2020-06-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710273144.8A Active CN106968761B (en) | 2017-04-25 | 2017-04-25 | Self-generating negative pressure diesel motor vehicle tail gas particle capturing device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107587924A (en) * | 2017-08-25 | 2018-01-16 | 北京汽车研究总院有限公司 | A kind of performance compensation method, system and the vehicle of the grain catcher of vehicle |
| DE102020133470B4 (en) * | 2020-12-15 | 2023-12-21 | Mack Gmbh | Cleaning device and method for cleaning a filter arrangement |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104564251A (en) * | 2013-10-28 | 2015-04-29 | 十堰银轮汽车零部件有限公司 | Novel exhaust ejection postprocessor |
| CN105363283A (en) * | 2014-08-21 | 2016-03-02 | 深圳市旋聚技术有限公司 | Dust particle processing apparatus |
| WO2016082850A1 (en) * | 2014-11-27 | 2016-06-02 | Volvo Truck Corporation | Exhaust purification system for internal combustion engines with recirculation of exhaust gases |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3816581B2 (en) * | 1996-06-21 | 2006-08-30 | 株式会社共立 | Muffler for internal combustion engine |
| CN102366691A (en) * | 2011-10-19 | 2012-03-07 | 江苏省宜兴非金属化工机械厂有限公司 | Fume filter |
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- 2017-04-25 CN CN201710273144.8A patent/CN106968761B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104564251A (en) * | 2013-10-28 | 2015-04-29 | 十堰银轮汽车零部件有限公司 | Novel exhaust ejection postprocessor |
| CN105363283A (en) * | 2014-08-21 | 2016-03-02 | 深圳市旋聚技术有限公司 | Dust particle processing apparatus |
| WO2016082850A1 (en) * | 2014-11-27 | 2016-06-02 | Volvo Truck Corporation | Exhaust purification system for internal combustion engines with recirculation of exhaust gases |
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| CN106968761A (en) | 2017-07-21 |
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