阅读说明：本技术 一种具有自动清理功能的汽车尾气排放过滤装置 (Automobile exhaust emission filtering device with automatic cleaning function ) 是由 张勇花 刘嘉 马文钰 万深玮 于 2021-10-14 设计创作，主要内容包括：本发明涉及汽车尾气处理技术领域,且公开了一种具有自动清理功能的汽车尾气排放过滤装置,包括处理箱,所述处理箱的右侧固定安装有用于与汽车尾气管相连接的连接管,所述处理箱的内部设置有挡块,所述挡块朝向连接管的一侧设置有导热块,所述导热块的左端固定安装有导热杆,所述导热杆的末端固定连接有电阻丝；由汽车排出的高温汽车尾气由连接管通入进入燃烧室,汽车尾气通过导热块和导热杆与电阻丝之间发生热传递,使电阻丝的温度逐渐升高,当电阻丝的温度达到汽车尾气的燃点时,便能够点燃燃烧室内的汽车尾气,使汽车尾气发生二次燃烧,有效消除汽车尾气内的有害物质,达到优异的净化处理效果。(The invention relates to the technical field of automobile exhaust treatment, and discloses an automobile exhaust emission filtering device with an automatic cleaning function, which comprises a treatment box, wherein a connecting pipe used for being connected with an automobile exhaust pipe is fixedly arranged on the right side of the treatment box; the high-temperature automobile exhaust discharged by an automobile is introduced into the combustion chamber through the connecting pipe, the automobile exhaust generates heat transfer between the heat conducting block and the heat conducting rod and the resistance wire, so that the temperature of the resistance wire is gradually increased, when the temperature of the resistance wire reaches the ignition point of the automobile exhaust, the automobile exhaust in the combustion chamber can be ignited, the automobile exhaust generates secondary combustion, harmful substances in the automobile exhaust are effectively eliminated, and an excellent purification treatment effect is achieved.)

1. The utility model provides an automobile exhaust discharges filter equipment with automatic clearance function, is including handling case (1), the right side fixed mounting who handles case (1) has connecting pipe (2) that are used for being connected with automobile exhaust pipe, its characterized in that: a check block (3) is arranged in the treatment box (1), a heat conduction block (4) is arranged on one side, facing the connecting pipe (2), of the check block (3), a heat conduction rod (5) is fixedly installed at the left end of the heat conduction block (4), and a resistance wire (6) is fixedly connected to the tail end of the heat conduction rod (5);

an arc-shaped plate (7) is fixedly mounted on the left side of the inner wall of the treatment box (1), a combustion chamber is formed between the arc-shaped plate (7) and the stop block (3), and the resistance wire (6) penetrates through the interior of the combustion chamber;

the outer wall of arc (7) still link up and be connected with outlet duct (8), the end of outlet duct (8) extends to the outside of handling case (1).

2. The automobile exhaust emission filter device with automatic cleaning function according to claim 1, characterized in that: one sides of the stop blocks (3) and the heat conducting blocks (4) facing the connecting pipe (2) are both concave cambered surfaces.

3. The automobile exhaust emission filter device with automatic cleaning function according to claim 1, characterized in that: air pumps (9) are fixedly arranged at the top and the bottom of the right end of the treatment box (1), air supply pipes (10) are fixedly arranged at the output ends of the two air pumps (9), and the tail ends of the two air supply pipes (10) are respectively connected with a distribution pipe (11) in a through manner;

two distributing pipes (11) are respectively arranged between the top of the right end of the stop block (3) and the inner side wall of the processing box (1) and between the bottom of the right end of the stop block (3) and the inner side wall of the processing box (1).

4. The automobile exhaust emission filter device with automatic cleaning function according to claim 3, characterized in that: the distribution pipe (11) is spirally coiled, and the outer walls of the two distribution pipes (11) are provided with nozzles (12).

5. The automobile exhaust emission filter device with automatic cleaning function according to claim 4, characterized in that: the arrangement directions of the nozzles (12) on the two distribution pipes (11) are opposite.

6. The automobile exhaust emission filter device with automatic cleaning function according to claim 5, characterized in that: a plurality of shunting cones (13) are arranged between the top of the check block (3) and the inner top wall of the treatment box (1) and between the bottom of the check block (3) and the inner bottom wall of the treatment box (1).

7. The automobile exhaust emission filter device with automatic cleaning function according to claim 1, characterized in that: the tail end of the air outlet pipe (8) is fixedly arranged on the left side of a filter cylinder (14), the filter cylinder (14) is fixedly arranged at the bottom of the treatment box (1) and communicated with a combustion chamber, and an exhaust pipe (15) is fixedly arranged on the right side of the filter cylinder (14);

the air outlet pipe (8) and the exhaust pipe (15) are communicated with the filter cartridge (14).

8. The automobile exhaust emission filter device with automatic cleaning function according to claim 7, characterized in that: a plunger (16) is movably arranged in the filter cartridge (14), a communicating groove (17) is transversely formed in the plunger (16) in a through mode, two clamping nets (22) are oppositely arranged in the communicating groove (17), and a filter element (23) is filled between the two clamping nets (22);

the communication position of the air outlet pipe (8) and the exhaust pipe (15) on the filter cartridge (14) corresponds to the opening position of the communication groove (17).

9. The automobile exhaust emission filter device with automatic cleaning function according to claim 8, characterized in that: guide rods (18) are inserted into the left side and the right side of the plunger (16), the bottom of each guide rod (18) is fixedly mounted on the inner bottom wall of the filter cylinder (14), a positioning ring (19) is fixedly mounted at the top of each guide rod (18), each positioning ring (19) is fixedly mounted on the inner wall of the filter cylinder (14), a spring (20) is further sleeved outside each guide rod (18), and each spring (20) is fixedly mounted between the bottom of the plunger (16) and the inner bottom wall of the filter cylinder (14);

the inside in intercommunication groove (17) still is provided with two arc filter screen (21) relatively, two the bottom of arc filter screen (21) is fixed mounting respectively on the outer wall of left and right sides guide bar (18), two the equal fixed mounting in top of arc filter screen (21) is on the interior roof of intercommunication groove (17).

10. The automobile exhaust emission filter device with automatic cleaning function according to claim 9, characterized in that: slag holes (24) are formed in the left side and the right side of the inner bottom wall of the communicating groove (17), and slag discharge holes (25) are formed in the inner bottom wall of the filter cartridge (14).

Technical Field

The invention relates to the technical field of automobile exhaust treatment, in particular to an automobile exhaust emission filtering device with an automatic cleaning function.

Background

With the development of science and technology and the gradual improvement of the living standard of people, the automobile has more and more reserves, and becomes a necessary travel tool for each family; however, as the amount of used automobiles increases, the pollution caused by automobile exhaust gas is more serious; the tail gas emitted by the automobile contains gases harmful to the environment and human bodies, such as nitrogen, carbon monoxide, carbon dioxide, unburned hydrocarbon, carbon nitride, nitrogen oxide, sulfur dioxide and the like, so that the environment is seriously polluted, and the health of the human bodies is greatly damaged, therefore, how to effectively reduce the pollution of the tail gas of the automobile is a problem which has to be solved;

the Chinese patent publication number is: the invention of CN112523854B provides an automobile exhaust collecting and filtering device, which comprises a mounting frame, wherein the mounting frame is arranged on an automobile body; the filtering mechanism is arranged between one side of the mounting frame and the exhaust pipe; and one side of the mounting rack is provided with a fixing mechanism which is matched with the filtering mechanism. Through fixed establishment, filter equipment and supplementary slewing mechanism's cooperation, can filter automobile exhaust automatically and discharging, reduce automobile exhaust to atmospheric pollution, do not need manual operation, make things convenient for people's work, through elevating system, emission that can automatic control automobile exhaust increases automobile exhaust and persists the time in flexible rose box, improves the filter effect to automobile exhaust.

Although the pollution of automobile exhaust is greatly reduced in the above automobile exhaust collecting and filtering device, in practical application, we find that it still has certain disadvantages, such as:

the automobile exhaust collecting and filtering device has too complicated structure, too high production cost, difficult large-scale use and not ideal filtering effect;

based on this, we propose an automobile exhaust emission filtering device with automatic cleaning function, hope to solve the disadvantages in the prior art.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides the automobile exhaust emission filtering device with the automatic cleaning function, and the automobile exhaust emission filtering device has the advantages of simple structure and good filtering effect.

(II) technical scheme

In order to realize the purposes of simple structure and good filtering effect, the invention provides the following technical scheme: an automobile exhaust emission filtering device with an automatic cleaning function comprises a processing box, wherein a connecting pipe used for being connected with an automobile exhaust pipe is fixedly arranged on the right side of the processing box, a stop block is arranged inside the processing box, a heat conducting block is arranged on one side, facing the connecting pipe, of the stop block, a heat conducting rod is fixedly arranged at the left end of the heat conducting block, and a resistance wire is fixedly connected to the tail end of the heat conducting rod;

an arc-shaped plate is fixedly mounted on the left side of the inner wall of the treatment box, a combustion chamber is formed between the arc-shaped plate and the stop block, and the resistance wire penetrates through the interior of the combustion chamber;

the outer wall of arc still through connection has the outlet duct, the end of outlet duct extends to the outside of handling the case.

As a preferable technical scheme of the invention, the side of the stop block and the side of the heat conducting block facing the connecting pipe are both concave cambered surfaces.

According to a preferable technical scheme, air pumps are fixedly arranged at the top and the bottom of the right end of the treatment box, air supply pipes are fixedly arranged at the output ends of the two air pumps, and the tail ends of the two air supply pipes are connected with distribution pipes in a penetrating manner;

the two distributing pipes are respectively arranged between the top of the right end of the check block and the inner side wall of the processing box and between the bottom of the right end of the check block and the inner side wall of the processing box.

As a preferable technical scheme of the invention, the distribution pipes are spirally coiled, and the outer walls of the two distribution pipes are provided with nozzles.

As a preferred technical solution of the present invention, the nozzles on the two distribution pipes are arranged in opposite directions.

As a preferable technical scheme of the invention, a plurality of shunting cones are respectively arranged between the top of the stop block and the inner top wall of the treatment box and between the bottom of the stop block and the inner bottom wall of the treatment box.

As a preferred technical scheme of the invention, the tail end of the air outlet pipe is fixedly arranged at the left side of a filter cylinder, the filter cylinder is fixedly arranged at the bottom of the treatment box and communicated with a combustion chamber, and the right side of the filter cylinder is fixedly provided with an exhaust pipe;

the air outlet pipe and the exhaust pipe are both communicated with the filter cartridge.

As a preferred technical scheme of the invention, a plunger is movably arranged in the filter cartridge, a communicating groove is transversely formed in the plunger in a through manner, two clamping nets are oppositely arranged in the communicating groove, and a filter element is filled between the two clamping nets;

and the communication position of the air outlet pipe and the exhaust pipe on the filter cylinder corresponds to the opening position of the communication groove.

As a preferred technical scheme of the present invention, guide rods are inserted into both the left and right sides of the plunger, the bottom of each guide rod is fixedly mounted on the inner bottom wall of the filter cartridge, a positioning ring is fixedly mounted at the top of each guide rod, the positioning ring is fixedly mounted on the inner wall of the filter cartridge, a spring is further sleeved outside each guide rod, and the spring is fixedly mounted between the bottom of the plunger and the inner bottom wall of the filter cartridge;

the inside in intercommunication groove still is provided with two arc filter screens relatively, two the bottom of arc filter screen is fixed mounting respectively on the outer wall of left and right sides guide bar, two the equal fixed mounting in top of arc filter screen is on the interior roof in intercommunication groove.

As a preferable technical scheme of the invention, the left side and the right side of the inner bottom wall of the communicating groove are both provided with slag holes, and the inner bottom wall of the filter cylinder is provided with slag holes.

(III) advantageous effects

Compared with the prior art, the invention provides an automobile exhaust emission filtering device with an automatic cleaning function, which has the following beneficial effects:

1. according to the automobile exhaust emission filtering device with the automatic cleaning function, high-temperature automobile exhaust discharged by an automobile is introduced through a connecting pipe and sprayed on the stop block and the heat conducting block, wherein the heat conducting block can absorb heat and enables the resistance wire to generate heat through the heat conducting rod, and the introduced automobile exhaust flows leftwards from the upper side and the lower side of the stop block and enters the combustion chamber;

automobile exhaust takes place the heat transfer through taking place between heat conduction piece and heat conduction pole and the resistance wire, makes the temperature of resistance wire rise gradually, when the temperature of resistance wire reached automobile exhaust's ignition point, just can ignite automobile exhaust in the combustion chamber, makes automobile exhaust take place the postcombustion, effectively eliminates the harmful substance in the automobile exhaust, reaches excellent purification treatment effect.

2. According to the automobile exhaust emission filtering device with the automatic cleaning function, the oxygen content in automobile exhaust is low, hydrocarbon and hydrocarbon are difficult to fully combust, new air can be supplemented through the air pump, the air can be discharged through the air supply pipe, the distribution pipe and the nozzle when the air pump runs, and the discharged air is mixed with the automobile exhaust, so that the oxygen content in the automobile exhaust can be increased, and the automobile exhaust can be fully combusted secondarily;

the distribution pipe is spirally coiled, and the nozzles are uniformly arranged on the outer wall of the distribution pipe, so that the distribution pipe can supplement air in a multi-point dispersion manner, and the tail gas and the air are mixed more uniformly and sufficiently;

the setting of reposition of redundant personnel awl can make the mist of tail gas and air take place the diversion when flowing, and then the homogeneity of improvement mixture that can be further.

3. This automobile exhaust discharges filter equipment with automatic clearance function, automobile exhaust after the postcombustion passes through the outlet duct and discharges, enters into the cartridge filter, then discharges to the external world from the blast pipe behind the intercommunication groove via the plunger, and arc filter screen and the filter core of intercommunication inslot can filter automobile exhaust once more, the further harmful substance of getting rid of in the automobile exhaust.

4. This automobile exhaust discharges filter equipment with automatic clearance function, automobile exhaust in the combustion chamber can increase when the postcombustion, automobile exhaust that has increased the volume can promote the plunger and move down and compress the spring in the cartridge filter, because the bottom fixed mounting of arc filter screen is on the outer wall of guide bar, top fixed mounting is on the interior roof of intercommunication groove, so the plunger can promote the arc filter screen when moving down, make the arc filter screen produce the bending, the arc filter screen that produces the bending also can effectively filter automobile exhaust, and the arc filter screen is in the circulation form change of original state to bending, the impurity of adhesion can be shaken off on it, thereby reach the effect of automatic clearance arc filter screen;

moreover, when two arc filter screens all inwards buckle, two arc filter screens still can extrude the centre gripping net simultaneously, and the centre gripping net is extruded and is made its interior filter core produce roll and remove to change the position of filter core, avoid producing the filter core and adsorb the saturated condition to automobile exhaust with a face always, very big extension the life of filter core.

Drawings

FIG. 1 is a perspective view of the overall structure of the present invention;

FIG. 2 is a cross-sectional view of the overall structure of the present invention;

FIG. 3 is an enlarged schematic view of the stop portion of the present invention;

FIG. 4 is an enlarged schematic view of a portion of the air pump of the present invention;

FIG. 5 is an enlarged schematic view of a distributor tube portion of the present invention;

FIG. 6 is an enlarged schematic view of a diverter cone portion of the present invention;

FIG. 7 is an enlarged schematic view of a portion of the filter cartridge of the present invention;

FIG. 8 is a cross-sectional view of a portion of a filter cartridge in accordance with the present invention;

fig. 9 is an enlarged schematic view of the plunger portion of the present invention.

In the figure: 1. a treatment tank; 2. a connecting pipe; 3. a stopper; 4. a heat conducting block; 5. a heat conducting rod; 6. a resistance wire; 7. an arc-shaped plate; 8. an air outlet pipe; 9. an air pump; 10. a gas supply pipe; 11. a distribution pipe; 12. a nozzle; 13. a spreader cone; 14. a filter cartridge; 15. an exhaust pipe; 16. a plunger; 17. a communicating groove; 18. a guide bar; 19. a positioning ring; 20. a spring; 21. an arc-shaped filter screen; 22. clamping the net; 23. a filter element; 24. a slag hole; 25. a slag discharge hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

The first embodiment is as follows:

referring to fig. 1-3, an automobile exhaust emission filtering device with an automatic cleaning function comprises a processing box 1, a connecting pipe 2 for connecting with an automobile exhaust pipe is fixedly installed on the right side of the processing box 1 and used for introducing automobile exhaust, a stop block 3 is arranged inside the processing box 1, a heat conducting block 4 is arranged on one side, facing the connecting pipe 2, of the stop block 3, a heat conducting rod 5 is fixedly installed on the left end of the heat conducting block 4, a resistance wire 6 is fixedly connected to the tail end of the heat conducting rod 5, an arc-shaped plate 7 is fixedly installed on the left side of the inner wall of the processing box 1, a combustion chamber is formed between the arc-shaped plate 7 and the stop block 3, and the resistance wire 6 penetrates through the interior of the combustion chamber;

high-temperature automobile exhaust discharged by an automobile is introduced through a connecting pipe 2 and sprayed on a stop block 3 and a heat conducting block 4, wherein the heat conducting block 4 can absorb heat and heat a resistance wire 6 through a heat conducting rod 5, and the introduced automobile exhaust flows leftwards from the upper side and the lower side of the stop block 3 and enters a combustion chamber;

the automobile exhaust is subjected to heat transfer between the heat conducting block 4, the heat conducting rod 5 and the resistance wire 6, so that the temperature of the resistance wire 6 is gradually increased, when the temperature of the resistance wire 6 reaches the ignition point of the automobile exhaust, the automobile exhaust in a combustion chamber can be ignited, the automobile exhaust is subjected to secondary combustion, harmful substances in the automobile exhaust are effectively eliminated, and an excellent purification treatment effect is achieved;

the outer wall of the arc-shaped plate 7 is also connected with an air outlet pipe 8 in a penetrating way, the tail end of the air outlet pipe 8 extends to the outside of the treatment box 1, and automobile exhaust after secondary combustion can be discharged through the air outlet pipe 8;

one side of dog 3 and heat conduction piece 4 towards connecting pipe 2 all is the cambered surface of indent for heat conduction piece 4 can absorb automobile exhaust's heat more efficiently.

Example two:

referring to fig. 4-6, on the basis of the first embodiment, air pumps 9 are fixedly installed at the top and the bottom of the right end of the treatment tank 1, air supply pipes 10 are fixedly installed at the output ends of the two air pumps 9, the tail ends of the two air supply pipes 10 are connected with distribution pipes 11 in a penetrating manner, the two distribution pipes 11 are respectively arranged between the top of the right end of the stopper 3 and the inner side wall of the treatment tank 1 and between the bottom of the right end of the stopper 3 and the inner side wall of the treatment tank 1, the oxygen content in the automobile exhaust is low, it is difficult to realize sufficient combustion of hydrocarbons and hydrocarbon compounds, and at this time, new air can be supplemented by the air pumps 9;

the air pump 9 can discharge air through the air supply pipe 10, the distribution pipe 11 and the nozzle 12, and the discharged air is mixed with the automobile exhaust, so that the oxygen content in the automobile exhaust can be increased, and the automobile exhaust can be fully combusted secondarily;

the distribution pipes 11 are spirally coiled, the nozzles 12 are arranged on the outer walls of the two distribution pipes 11, and the air can be supplemented in a multi-point dispersing manner through the spirally coiled distribution pipes 11 and the nozzles 12 on the spiral distribution pipes, so that the tail gas and the air are mixed more uniformly and sufficiently;

the arrangement directions of the nozzles 12 on the two distribution pipes 11 are opposite to each other and are consistent with the flowing direction of the automobile exhaust, so that air can be more fully mixed with the automobile exhaust;

as shown in fig. 2 and 6, a plurality of splitter cones 13 are arranged between the top of the stopper 3 and the inner top wall of the treatment box 1 and between the bottom of the stopper 3 and the inner bottom wall of the treatment box 1, and the arrangement of the splitter cones 13 can change the direction of the mixed gas of the automobile exhaust and the air when flowing, so as to further improve the mixing uniformity of the air and the automobile exhaust.

Example three:

referring to fig. 7-9, on the basis of the first and second embodiments, the end of the outlet pipe 8 is fixedly installed at the left side of the filter cartridge 14, the filter cartridge 14 is fixedly installed at the bottom of the treatment tank 1 and is communicated with the combustion chamber, the right side of the filter cartridge 14 is fixedly installed with the exhaust pipe 15, and both the outlet pipe 8 and the exhaust pipe 15 are communicated with the filter cartridge 14;

a plunger 16 is movably arranged inside the filter cartridge 14, a communicating groove 17 is transversely formed in the plunger 16 in a penetrating manner, the communicating position of the air outlet pipe 8 and the exhaust pipe 15 on the filter cartridge 14 corresponds to the forming position of the communicating groove 17, two clamping nets 22 are oppositely arranged inside the communicating groove 17, and a filter element 23 is filled between the two clamping nets 22, wherein the filter element 23 is activated carbon particles in the embodiment;

guide rods 18 are inserted into the left side and the right side of the plunger 16, the bottom of each guide rod 18 is fixedly mounted on the inner bottom wall of the filter cylinder 14, a positioning ring 19 is fixedly mounted at the top of each guide rod 18, the positioning ring 19 is fixedly mounted on the inner wall of the filter cylinder 14, a spring 20 is further sleeved outside each guide rod 18, and the spring 20 is fixedly mounted between the bottom of the plunger 16 and the inner bottom wall of the filter cylinder 14;

as shown in fig. 8, two arc-shaped filter screens 21 are also oppositely arranged inside the communicating groove 17, the bottom ends of the two arc-shaped filter screens 21 are respectively and fixedly installed on the outer walls of the guide rods 18 at the left and right sides, and the top ends of the two arc-shaped filter screens 21 are both and fixedly installed on the inner top wall of the communicating groove 17;

the automobile exhaust after secondary combustion is discharged through the gas outlet pipe 8, enters the filter cartridge 14, is discharged to the outside from the gas outlet pipe 15 after passing through the communicating groove 17 of the plunger 16, and the arc-shaped filter screen 21 and the filter element 23 in the communicating groove 17 can filter the automobile exhaust again, so that harmful substances such as particulate matters and impurities in the automobile exhaust are further removed;

automobile exhaust in the combustion chamber can increase in volume during secondary combustion, the automobile exhaust with the increased volume can push the plunger 16 to move downwards in the filter cartridge 14 and compress the spring 20, because the bottom end of the arc-shaped filter screen 21 is fixedly arranged on the outer wall of the guide rod 18, and the top end of the arc-shaped filter screen is fixedly arranged on the inner top wall of the communicating groove 17, the plunger 16 can push the arc-shaped filter screen 21 when moving downwards, so that the arc-shaped filter screen 21 is bent, the bent arc-shaped filter screen 21 can also effectively filter the automobile exhaust, and impurities adhered to the arc-shaped filter screen 21 can be fallen off in the change of the circulating form from the original form to the bent form, thereby achieving the effect of automatically cleaning the arc-shaped filter screen 21;

moreover, when the two arc-shaped filter screens 21 are bent inwards, the two arc-shaped filter screens 21 can simultaneously extrude the clamping screen 22, and the clamping screen 22 is extruded to roll and move the filter element 23 (active carbon particles) in the clamping screen 22, so that the position of the filter element 23 is changed, the situation that the filter element 23 is easy to adsorb and saturate on the automobile exhaust by facing one surface all the time is avoided, and the service life of the filter element 23 is greatly prolonged;

in addition, due to the arrangement of the plunger 16, the volume increase of the automobile exhaust generated in secondary combustion can be carried, and the whole filtering device is not easy to damage (crack);

slag holes 24 have all been seted up to the left and right sides of diapire in the intercommunication groove 17, and row's cinder hole 25 has been seted up to the inner diapire of cartridge filter 14, and the impurity that shakes off on the arc filter screen 21 can discharge plunger 16 through slag holes 24, then discharges to the external world through row's cinder hole 25.

The working principle and the using process of the invention are as follows:

high-temperature automobile exhaust discharged by an automobile is introduced through a connecting pipe 2 and sprayed on a stop block 3 and a heat conducting block 4, wherein the heat conducting block 4 can absorb heat and heat a resistance wire 6 through a heat conducting rod 5, and the introduced automobile exhaust flows leftwards from the upper side and the lower side of the stop block 3 and enters a combustion chamber;

the automobile exhaust is subjected to heat transfer between the heat conducting block 4, the heat conducting rod 5 and the resistance wire 6, so that the temperature of the resistance wire 6 is gradually increased, when the temperature of the resistance wire 6 reaches the ignition point of the automobile exhaust, the automobile exhaust in a combustion chamber can be ignited, the automobile exhaust is subjected to secondary combustion, harmful substances in the automobile exhaust are effectively eliminated, and an excellent purification treatment effect is achieved;

the oxygen content in the automobile exhaust is low, so that the hydrocarbon and the hydrocarbon are difficult to be fully combusted, at the moment, new air can be supplemented through the air pump 9, the air pump 9 can exhaust air through the air supply pipe 10, the distribution pipe 11 and the nozzle 12, and the exhausted air is mixed with the automobile exhaust, so that the oxygen content in the automobile exhaust can be increased, and the automobile exhaust can be fully combusted secondarily;

because the distribution pipe 11 is spirally coiled and the nozzles 12 are uniformly arranged on the outer wall of the distribution pipe 11, the distribution pipe 11 can supplement air in a multi-point dispersion manner, so that the tail gas and the air are mixed more uniformly and sufficiently;

the arrangement of the splitter cone 13 can change the direction of the mixed gas of the tail gas and the air when the mixed gas flows, so that the mixing uniformity can be further improved;

the automobile exhaust after secondary combustion is discharged through the air outlet pipe 8, enters the filter cylinder 14, is discharged to the outside from the exhaust pipe 15 after passing through the communicating groove 17 of the plunger 16, and the arc-shaped filter screen 21 and the filter element 23 in the communicating groove 17 can filter the automobile exhaust again to further remove harmful substances in the automobile exhaust;

automobile exhaust in the combustion chamber can increase in volume during secondary combustion, the automobile exhaust with the increased volume can push the plunger 16 to move downwards in the filter cartridge 14 and compress the spring 20, because the bottom end of the arc-shaped filter screen 21 is fixedly arranged on the outer wall of the guide rod 18, and the top end of the arc-shaped filter screen is fixedly arranged on the inner top wall of the communicating groove 17, the plunger 16 can push the arc-shaped filter screen 21 when moving downwards, so that the arc-shaped filter screen 21 is bent, the bent arc-shaped filter screen 21 can also effectively filter the automobile exhaust, and impurities adhered to the arc-shaped filter screen 21 can be fallen off in the change of the circulating form from the original form to the bent form, thereby achieving the effect of automatically cleaning the arc-shaped filter screen 21;

moreover, when two arc filter screens 21 all inwards buckle, two arc filter screens 21 still can extrude centre gripping net 22 simultaneously, and centre gripping net 22 is extruded and makes filter core 23 in it produce and roll and remove to change filter core 23's position, avoid producing filter core 23 and adsorb the saturated condition to automobile exhaust with a face always, very big extension filter core 23's life.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.