阅读说明：本技术 一种自动调节尾气净化工作状态的装置 (Device for automatically adjusting tail gas purification working state ) 是由 刘�英 于 2021-01-27 设计创作，主要内容包括：本发明涉及汽车尾气相关领域,公开了一种自动调节尾气净化工作状态的装置,包括主体箱,主体箱内设有开口向上的尾气排放腔,尾气排放腔右侧设有离心轮腔,离心轮腔右侧连通设有触发箱体腔,离心轮腔左端壁内转动配合连接有向左延伸至尾气排放腔内且向右延伸至离心轮腔内的检测传动轴,本装置通过检测对汽车在不同行驶速度下排出的汽车尾气的量,进而自动调节相应的净化液所需要喷射的速率,使得汽车尾气的净化工作更加彻底,保证了汽车在行驶过程中汽车尾气排放的质量,同时保护环境,保证了汽车排出管零部件的使用寿命,另一方面装置还能对三元催化器进行干燥,保证三元催化器的工作状态。(The invention relates to the field of automobile exhaust, and discloses a device for automatically adjusting the working state of exhaust purification, which comprises a main body box, wherein an exhaust emission cavity with an upward opening is arranged in the main body box, a centrifugal wheel cavity is arranged at the right side of the exhaust emission cavity, a trigger box cavity is communicated with the right side of the centrifugal wheel cavity, a detection transmission shaft which extends leftwards into the exhaust emission cavity and rightwards into the centrifugal wheel cavity is connected in a rotating fit manner at the left end wall of the centrifugal wheel cavity, the device can automatically adjust the speed at which corresponding purification liquid needs to be sprayed by detecting the amount of automobile exhaust discharged by an automobile at different driving speeds, so that the purification work of the automobile exhaust is more thorough, the quality of the automobile exhaust emission in the driving process of the automobile is ensured, the environment is protected, the service life of parts of an automobile discharge pipe is ensured, and on the other hand, the device can, the working state of the three-way catalyst is ensured.)

1. The utility model provides an automatic adjust tail gas purification operating condition's device, includes the main part case, its characterized in that: the tail gas emission chamber with an upward opening is arranged in the main box, a centrifugal wheel chamber is arranged on the right side of the tail gas emission chamber, a trigger box chamber is communicated with the right side of the centrifugal wheel chamber, a detection transmission shaft which extends into the tail gas emission chamber leftwards and extends into the centrifugal wheel chamber rightwards is connected to the left end of the detection transmission shaft in a rotating fit manner, a detection wheel is fixedly connected to the left end of the detection transmission shaft, a centrifugal wheel is fixedly connected to the right end of the detection transmission shaft, a plurality of slide block chambers which are distributed with equal distance taking the detection transmission shaft as a center and are opened outwards are arranged in the centrifugal wheel, a slide block is connected in the slide block chamber in a sliding fit manner, a slide block spring is fixedly connected between the inner end surface of the slide block chamber and the inner end of the slide block chamber, a push plate is connected in the centrifugal wheel chamber in a sliding, the trigger box comprises a trigger box body cavity, a trigger box body, a small amount of trigger cavities, a small amount of trigger switches, a large amount of trigger blocks, a large amount of trigger springs, a large amount of trigger blocks, a large amount of trigger switches and a large amount of trigger switches, wherein the two fixed blocks are fixedly connected in the right end wall of the trigger box body cavity and are in central symmetry with the right end wall of the trigger box body cavity, the left end face of each fixed block is fixedly connected with the trigger box body, a small amount of trigger cavities with openings towards the left are arranged in the trigger box body, the lower sides of the small amount of trigger cavities are provided with the large amount of trigger blocks in a sliding fit manner, the right end face of each small amount of trigger block is fixedly connected with the right end wall of the small amount of trigger cavities, the small amount of trigger switches are, trigger the piece in a large number with a small amount trigger the piece can with push pedal right-hand member face butt, exhaust emissions chamber right side intercommunication is equipped with three way catalyst converter, three way catalyst converter right side intercommunication is equipped with right open-ended abandonment and discharges the chamber, three way catalyst converter upside intercommunication is equipped with the fan chamber, fan chamber upside intercommunication is equipped with the gear engagement chamber, gear engagement chamber upside just is located main part incasement fixedly connected with motor, terminal surface fixedly connected with downwardly extending runs through under the motor the gear engagement chamber extremely main power shaft in the fan intracavity.

2. The device for automatically adjusting the working condition of exhaust gas purification according to claim 1, wherein: the main power shaft is fixedly connected with a driving pinion positioned in the gear meshing cavity, the main power shaft is fixedly connected with a driving middle gear positioned on the lower side of the driving pinion, the main power shaft is fixedly connected with a main driving gear wheel positioned on the lower side of the main driving middle gear, the tail end of the lower side of the main power shaft is fixedly connected with a fan, a filter screen positioned at the lower side of the fan is fixedly connected between the left end wall and the right end wall of the fan cavity, a fan blade belt cavity is arranged at the lower side of the gear meshing cavity and positioned at the right side of the main power shaft, the upper end wall of the fan blade belt cavity is connected with a fan blade power shaft which extends downwards into the fan blade belt cavity and extends upwards through the gear meshing cavity in a rotating and matching manner, the fan blade power shaft is characterized in that a fan blade driving belt wheel is fixedly connected to the lower side of the fan blade power shaft, and a spline shaft sleeve located in the gear meshing cavity is connected to the fan blade power shaft in a spline fit mode.

3. The device for automatically adjusting the working condition of exhaust gas purification according to claim 2, wherein: the spline shaft sleeve is characterized in that the upper end and the lower end of the spline shaft sleeve are symmetrically and rotatably matched and connected with a spline rotating block, the spline shaft sleeve is fixedly connected with a driven large gear which is positioned at the lower side of the spline rotating block and can be meshed with the driving small gear, the spline shaft sleeve is fixedly connected with a driven middle gear which is positioned at the lower side of the driven large gear and can be meshed with the driving large gear, an upper side spline rotating spring is fixedly connected between the upper end surface of the spline rotating block and the upper end wall of the gear meshing cavity, a lower side rotating spring is fixedly connected between the lower end surface of the spline rotating block and the lower end wall of the gear meshing cavity, and an upper side electromagnet corresponding to the spline rotating block is fixedly connected outside the upper end wall of the gear meshing cavity, and the lower end of the gear meshing cavity is externally and fixedly connected with a lower side electromagnet corresponding to the spline rotating block at the lower side.

4. The device for automatically adjusting the working condition of exhaust gas purification according to claim 2, wherein: the terminal fixedly connected with flabellum driving pulley of flabellum power shaft downside, gear engagement chamber right side is equipped with the flabellum chamber, flabellum chamber upside intercommunication is equipped with the cleaning solution and leads to the chamber, the cleaning solution leads to chamber upside intercommunication and is equipped with the clean liquid chamber of tail gas, flabellum chamber lower extreme end wall normal running fit is connected with and upwards extends to flabellum intracavity and downwardly extending child the flabellum transmission shaft of flabellum belt intracavity, the terminal fixedly connected with flabellum of flabellum transmission shaft upside, the terminal fixedly connected with flabellum driven pulley of flabellum transmission shaft downside, the flabellum driven pulley with power fit is connected with flabellum.

5. The device for automatically adjusting the working condition of exhaust gas purification according to claim 1, wherein: the exhaust emissions chamber right side just is located centrifugal wheel chamber downside intercommunication is equipped with the fixed chamber of shower nozzle, fixedly connected with extends to left in the fixed chamber right side wall of shower nozzle the shower nozzle in the exhaust emissions intracavity, be equipped with opening left and the opening right cleaning solution logical chamber in the shower nozzle, the fixed chamber right-hand member wall of shower nozzle outer and can with the cleaning solution lead to the terminal department of correspondence in chamber right side with fan blade chamber left end wall fixedly connected with cleaning solution pipe.

Technical Field

The invention relates to the field related to automobile exhaust purification, in particular to a device for automatically adjusting the working state of exhaust purification.

Background

At present, when automobiles run at different speeds, the amount of exhausted automobile exhaust is different, the injection rate of automobile exhaust purifying liquid cannot be automatically adjusted according to corresponding conditions, when the automobile exhaust is too much, the injection rate of the purifying liquid is constant, so that the automobile exhaust cannot be completely purified, harmful substances in the automobile exhaust cannot be completely purified, and the environment pollution is eliminated; when automobile exhaust is less, can waste certain scavenging solution, present tail gas cleanup unit is less to carrying out drying to three way catalyst converter, will cause automobile exhaust pipe's life to have certain harm.

Disclosure of Invention

The invention aims to provide a device for automatically adjusting the working state of tail gas purification, which can overcome the defects in the prior art, thereby improving the practicability of equipment.

The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a device for automatically adjusting tail gas purification working state, which comprises a main body box, wherein a tail gas discharge cavity with an upward opening is arranged in the main body box, a centrifugal wheel cavity is arranged on the right side of the tail gas discharge cavity, a trigger box cavity is communicated with the right side of the centrifugal wheel cavity, a detection transmission shaft which extends leftwards into the tail gas discharge cavity and rightwards into the centrifugal wheel cavity is connected in a rotating fit manner at the left end wall of the centrifugal wheel cavity, a detection wheel is fixedly connected at the left end of the detection transmission shaft, a centrifugal wheel is fixedly connected at the right end of the detection transmission shaft, a plurality of slide block cavities which are equidistantly distributed by taking the detection transmission shaft as a center are arranged in the centrifugal wheel, slide blocks are connected in a sliding fit manner in the slide block cavities, a slide block spring is fixedly connected between the inner end surface of each slide block and the inner end of each slide, a push plate spring is fixedly connected between the lower end face of the push plate and the lower end wall of the centrifugal wheel cavity, two fixed blocks which are centrosymmetric with respect to the right end wall of the trigger box cavity are fixedly connected in the right end wall of the trigger box cavity, a trigger box body is fixedly connected on the left end face of the fixed blocks, a small amount of trigger cavities with openings towards the left are arranged in the trigger box body, a large amount of trigger cavities are arranged on the lower sides of the small amount of trigger cavities, a small amount of trigger blocks are connected in the small amount of trigger cavities in a sliding fit manner, a small amount of trigger springs are fixedly connected between the right end faces of the small amount of trigger blocks and the right end wall of the small amount of trigger cavities, a small amount of trigger switches abutted against the small amount of trigger blocks are fixedly connected in the upper end wall of the small amount of trigger cavities, a large amount of, a large amount of the interior fixedly connected with of the piece chamber upper end of starting out with a large amount of trigger switch of triggering a large amount of butt, trigger a large amount of the piece with a small amount of trigger piece can with push pedal right-hand member face butt, exhaust emission chamber right side intercommunication is equipped with three way catalyst converter, three way catalyst converter right side intercommunication is equipped with right open-ended abandonment and discharges the chamber, three way catalyst converter upside intercommunication is equipped with the fan chamber, fan chamber upside intercommunication is equipped with gear engagement chamber, gear engagement chamber upside just is located main part incasement fixedly connected with motor, terminal surface fixedly connected with downwardly extending runs through under the motor gear engagement chamber extremely main power shaft in the fan chamber.

On the basis of the technical scheme, a driving pinion positioned in the gear meshing cavity is fixedly connected to the driving power shaft, the main power shaft is fixedly connected with a driving middle gear positioned on the lower side of the driving pinion, the main power shaft is fixedly connected with a driving big gear positioned on the lower side of the driving middle gear, the tail end of the lower side of the main power shaft is fixedly connected with a fan, a filter screen positioned on the lower side of the fan is fixedly connected between the left end wall and the right end wall of the fan cavity, a fan blade belt cavity is arranged at the lower side of the gear meshing cavity and at the right side of the main power shaft, a fan blade power shaft which extends downwards into the fan blade belt cavity and extends upwards through the gear meshing cavity is connected with the upper end wall of the fan blade belt cavity in a rotating fit manner, the fan blade power shaft is characterized in that a fan blade driving belt wheel is fixedly connected to the lower side of the fan blade power shaft, and a spline shaft sleeve located in the gear meshing cavity is connected to the fan blade power shaft in a spline fit mode.

On the basis of the technical scheme, the spline shaft sleeve is symmetrically and rotatably matched with the upper end and the lower end of the spline shaft sleeve to form a spline rotating block, the spline shaft sleeve is fixedly connected with a driven large gear which is positioned at the lower side of the spline rotating block and can be meshed with the driving small gear, the spline shaft sleeve is fixedly connected with a driven middle gear which is positioned at the lower side of the driven large gear and can be meshed with the driving large gear, an upper side rotating spring is fixedly connected between the upper end surface of the spline rotating block and the upper end wall of the gear meshing cavity, a lower side rotating spring is fixedly connected between the lower end surface of the spline rotating block and the lower end wall of the gear meshing cavity, and an upper side electromagnet corresponding to the spline rotating block is fixedly connected with the upper end wall of the gear meshing cavity and arranged on the upper end wall of the gear meshing cavity, and the lower end of the gear meshing cavity is externally and fixedly connected with a lower side electromagnet corresponding to the spline rotating block at the lower side.

On the basis of the technical scheme, the terminal fixedly connected with flabellum driving pulley of flabellum power shaft downside, gear engagement chamber right side is equipped with the flabellum chamber, flabellum chamber upside intercommunication is equipped with the cleaning solution and leads to the chamber, the cleaning solution leads to chamber upside intercommunication and is equipped with the clean liquid chamber of tail gas, the end wall normal running fit is connected with and upwards extends to flabellum intracavity and downwardly extending child the flabellum transmission shaft of flabellum belt intracavity, the terminal fixedly connected with flabellum of flabellum transmission shaft upside, the terminal fixedly connected with flabellum driven pulley of flabellum transmission shaft downside, the flabellum driven pulley with power fit is connected with flabellum power belt between the.

On the basis of the technical scheme, exhaust emission chamber right side just is located centrifugal wheel chamber downside intercommunication is equipped with the fixed chamber of shower nozzle, fixedly connected with extends to left in the fixed chamber right end wall of shower nozzle the shower nozzle in the exhaust emission intracavity, be equipped with opening left and opening right cleaning solution and lead to the chamber in the shower nozzle, the fixed chamber right-hand member wall of shower nozzle outer and can with the cleaning solution lead to chamber right side end correspond the department with fan blade chamber left end wall fixedly connected with cleaning solution pipe.

The invention has the beneficial effects that: this device is through detecting the volume to car exhaust under the different speeds of traveling, and then the corresponding required speed that sprays of automatically regulated scavenging solution for car exhaust's purification work is more thorough, has guaranteed the quality that the car was at the in-process automobile exhaust emission of traveling, and the environmental protection simultaneously has guaranteed the life of car discharge pipe spare part, and on the other hand device can also carry out the drying to three way catalyst converter, guarantees three way catalyst converter's operating condition.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

The invention is further illustrated with reference to the following figures and examples.

Fig. 1 is a schematic view of the overall structure of an apparatus for automatically adjusting the operating state of exhaust gas purification according to the present invention.

Fig. 2 is an enlarged schematic view of a in fig. 1.

Fig. 3 is an enlarged schematic view of B in fig. 1.

Detailed Description

The invention will now be described in detail with reference to fig. 1-3, wherein for ease of description the orientations described hereinafter are now defined as follows: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.

The device for automatically adjusting the working condition of tail gas purification described in conjunction with fig. 1-3 comprises a main body box 10, a tail gas discharge cavity 13 with an upward opening is arranged in the main body box 10, a centrifugal wheel cavity 14 is arranged on the right side of the tail gas discharge cavity 13, a trigger box cavity 65 is communicated with the right side of the centrifugal wheel cavity 14, a detection transmission shaft 11 which extends leftwards into the tail gas discharge cavity 13 and rightwards into the centrifugal wheel cavity 14 is connected in a rotating fit manner in the left end wall of the centrifugal wheel cavity 14, a detection wheel 12 is fixedly connected to the left end of the detection transmission shaft 11, a centrifugal wheel 16 is fixedly connected to the right end of the detection transmission shaft 11, a plurality of slide block cavities 15 which are equidistantly distributed with the detection transmission shaft 11 as the center and are provided with an outward opening are arranged in the centrifugal wheel 16, a slide block 66 is connected in the slide block cavity 15 in a sliding fit manner, and a slide block spring 48 is, the centrifugal wheel cavity 14 is internally and fixedly connected with a push plate 47 in a sliding fit manner at the lower side of the centrifugal wheel 16, a push plate spring 46 is fixedly connected between the lower end surface of the push plate 47 and the lower end wall of the centrifugal wheel cavity 14, two fixed blocks 38 which are symmetrical about the right end wall of the trigger box cavity 65 are fixedly connected in the right end wall of the trigger box cavity 65, a trigger box body 37 is fixedly connected at the left end surface of each fixed block 38, a small amount of trigger cavities 39 which are open towards the left are arranged in the trigger box body 37, a large amount of starting block cavities 43 are arranged at the lower side of the small amount of trigger cavities 39, a small amount of trigger blocks 45 are connected in the small amount of trigger cavities 39 in a sliding fit manner, a small amount of trigger springs 40 are fixedly connected between the right end surface of the small amount of trigger blocks 45 and the right end wall of the small, a plurality of trigger blocks 44 are connected in the starting block cavities 43 in a sliding fit manner, a plurality of trigger springs 42 are fixedly connected between the right end faces of the trigger blocks 44 and the right end walls of the starting block cavities 43, a plurality of trigger switches 41 which are abutted with the plurality of trigger blocks 44 are fixedly connected in the upper ends of the plurality of starting block cavities 43, the large number of trigger blocks 44 and the small number of trigger blocks 45 can abut against the right end face of the push plate 47, the right side of the tail gas discharge cavity 13 is communicated with a three-way catalyst 30, the right side of the three-way catalyst 30 is communicated with a waste discharge cavity 26 with a right opening, the upper side of the three-way catalyst 30 is communicated with a fan cavity 27, the upper side of the fan cavity 27 is communicated with a gear meshing cavity 18, a motor 17 is fixedly connected to the upper side of the gear engagement cavity 18 and positioned in the main body box 10, the lower end surface of the motor 17 is fixedly connected with a main power shaft 49 which extends downwards to penetrate through the gear meshing cavity 18 to the fan cavity 27.

In addition, in one embodiment, a driving pinion 50 located in the gear meshing cavity 18 is fixedly connected to the main power shaft 49, a driving middle gear 63 located on the lower side of the driving pinion 50 is fixedly connected to the main power shaft 49, a driving large gear 62 located on the lower side of the driving middle gear 63 is fixedly connected to the main power shaft 49, a fan 28 is fixedly connected to the end of the lower side of the main power shaft 49, a filter screen 29 located on the lower side of the fan 28 is fixedly connected between the left end wall and the right end wall of the fan cavity 27, a fan blade belt cavity 25 is arranged on the lower side of the gear meshing cavity 18 and located on the right side of the main power shaft 49, a fan blade power shaft 59 extending downwards into the fan blade belt cavity 25 and extending upwards through the gear meshing cavity 18 is rotatably connected to the upper end wall of the fan blade belt cavity 25 in a matched manner, a fan blade driving pulley 58 is fixedly connected to the lower side, the fan blade power shaft 59 is in spline fit connection with a spline shaft sleeve 54 positioned in the gear meshing cavity 18.

In addition, in one embodiment, the spline shaft sleeve 54 is symmetrically and rotatably connected with a spline rotating block 53 at the upper end and the lower end, the spline shaft sleeve 54 is fixedly connected with a driven large gear 64 which is positioned at the lower side of the spline rotating block 53 and can be meshed with the driving small gear 50, the spline shaft sleeve 54 is fixedly connected with a driven middle gear 55 which is positioned at the lower side of the driven large gear 64 and is meshed with the driving middle gear 63, the spline shaft sleeve 54 is fixedly connected with a driven small gear 56 which is positioned at the lower side of the driven middle gear 55 and can be meshed with the driving large gear 62, an upper rotating spring 52 is fixedly connected between the upper end surface of the spline rotating block 53 at the upper side and the upper end wall of the gear meshing cavity 18 at the lower side, and a lower rotating spring 61 is fixedly connected between the lower end surface of the spline rotating block 53 at, an upper side electromagnet 51 corresponding to the spline rotating block 53 on the upper side is fixedly connected to the outer side of the upper end wall of the gear meshing cavity 18, and a lower side electromagnet 60 corresponding to the spline rotating block 53 on the lower side is fixedly connected to the outer side of the lower end of the gear meshing cavity 18.

In addition, in one embodiment, the terminal fixedly connected with flabellum driving pulley 58 of flabellum power shaft 59 downside, gear engagement chamber 18 right side is equipped with flabellum chamber 22, flabellum chamber 22 upside intercommunication is equipped with the cleaning solution and leads to chamber 20, the cleaning solution leads to chamber 20 upside intercommunication and is equipped with the clean liquid chamber 19 of tail gas, the terminal rotation fit connection has upwards to extend to in the flabellum chamber 22 and the downwardly extending child flabellum transmission shaft 23 in the flabellum belt chamber 25 under the flabellum chamber 22, the terminal fixedly connected with flabellum 21 of flabellum transmission shaft 23 upside, the terminal fixedly connected with flabellum driven pulley 24 of flabellum transmission shaft 23 downside, flabellum driven pulley 24 with power fit is connected with flabellum power belt 57 between the flabellum driving pulley 58.

In addition, in an embodiment, the exhaust emission chamber 13 right side just is located centrifugal wheel chamber 14 downside intercommunication is equipped with the fixed chamber 32 of shower nozzle, fixedly connected with extends to left in the fixed chamber 32 right end wall of shower nozzle 34 in the exhaust emission chamber 13, be equipped with the opening left and the cleaning solution of opening right in the shower nozzle 34 leads to the chamber 33, the fixed chamber 32 right end wall of shower nozzle outside and can with the cleaning solution lead to chamber 33 right side end correspondence with fan blade chamber 22 left end wall fixedly connected with cleaning solution pipe 31.

The fixing and connecting method in this embodiment includes, but is not limited to, bolting, welding, and the like.

As shown in fig. 1 to 3, when the device of the present invention is in the initial state, no gas flows out of the exhaust gas discharge chamber 13, and the push plate 47 is not abutted against the small number of trigger blocks 45 and the large number of trigger blocks 44;

sequence of mechanical actions of the whole device:

when the automobile starts to work, the motor 17 is started, the motor 17 rotates to drive the driving pinion 50, the driving middle gear 63 and the driving big gear 62 to rotate through the driving power shaft 49, and meanwhile, the driving power shaft 49 drives the fan 28 to rotate;

when the automobile runs at normal speed, the normal automobile exhaust emission is exhausted from the exhaust emission cavity 13, the automobile exhaust emission drives the detection wheel 12 to rotate, the detection wheel 12 rotates to drive the centrifugal wheel 16 to rotate through the detection transmission shaft 11, and the centrifugal wheel 16 rotates to enable the sliding block 66 to start to move outwards under the action of the centrifugal force of the centrifugal wheel 16 and overcome the pulling force of the sliding block spring 48;

since the automobile runs at normal speed, the displacement is normal, at this time, the push plate 47 just overcomes the thrust action of the push plate spring 46 under the thrust action of the slide block 66 and moves downwards to between the small quantity of trigger blocks 45 and the large quantity of trigger blocks 44, at this time, the driving middle gear 63 is meshed with the driven middle gear 55, the driving middle gear 63 rotates to drive the driven middle gear 55 to rotate, the driven middle gear 55 rotates to drive the spline shaft sleeve 54 to rotate so as to drive the fan blade power shaft 59 to rotate, the fan blade power shaft 59 rotates to drive the fan blade driving pulley 58 to rotate, the fan blade driving pulley 58 rotates to drive the fan blade driven pulley 24 to rotate through the fan blade power belt 57, the fan blade driven pulley 24 rotates to drive the fan blade 21 to rotate through the fan blade transmission shaft 23, at this time, the fan blade 21 enables the automobile exhaust cleaning liquid in the exhaust cleaning liquid cavity, then enters the cleaning solution through cavity 33 to spray the milk tail gas discharge cavity 13, thereby achieving the purpose of eliminating and absorbing the automobile tail gas in the tail gas discharge cavity 13;

when the cleaning solution through cavity 33 sprays the automobile exhaust cleaning solution, the main power shaft 49 drives the fan 28 to rotate, so that the interior of the three-way catalyst 30 is air-dried, and the three-way catalyst 30 is prevented from being damaged due to moisture adhesion in the three-way catalyst 30;

when the automobile runs at a high speed, the speed of the exhaust discharged from the exhaust discharge cavity 13 is increased, the rotation speed of the detection wheel 12 is increased, so that the detection wheel 12 drives the centrifugal wheel 16 to increase through the detection transmission shaft 11, so that the centrifugal force generated by the centrifugal wheel 16 is increased, at this time, under the action of a large centrifugal force, the slider 66 pushes the push plate 47 downwards to move farther, at this time, the push plate 47 just moves until the push plate 47 pushes the large number of trigger blocks 44 to move rightwards against the thrust of the large number of trigger springs 42, the large number of trigger blocks 44 just trigger the large number of trigger switches 41, at this time, the large number of trigger switches 41 trigger the lower side electromagnet 60 to generate a suction force to the lower side spline rotation block 53, at this time, under the action of the suction force of the lower side electromagnet 60, the lower side spline rotation block 53 drives the spline shaft sleeve 54 and the driven large gear 64 to, at the moment, the driven pinion 56 moves downwards to a position where the driven pinion 56 is meshed with the driving gearwheel 62, and meanwhile, the driven intermediate gear 55 is disengaged from the driving intermediate gear 63, so that the driving gearwheel 62 rotates to drive the driven pinion 56 to rotate, the driven pinion 56 rotates to drive the spline shaft sleeve 54 to rotate, so that the fan blade power shaft 59 is driven to rotate, and the rotating speed of the fan blade power shaft 59 is higher than that at a normal running speed, so that the amount of the automobile exhaust purification liquid at the spraying position in the cleaning liquid through cavity 33 is increased;

when the automobile runs at a low speed, less automobile exhaust is discharged from the exhaust emission cavity 13, so that the rotating speed of the detection wheel 12 is lower, less automobile exhaust purifying liquid is discharged from the cleaning liquid through cavity 33, and the aim of adjusting the spraying rate of the purifying liquid according to the running speed of the automobile is achieved.

The invention has the beneficial effects that: this device is through detecting the volume to car exhaust under the different speeds of traveling, and then the corresponding required speed that sprays of automatically regulated scavenging solution for car exhaust's purification work is more thorough, has guaranteed the quality that the car was at the in-process automobile exhaust emission of traveling, and the environmental protection simultaneously has guaranteed the life of car discharge pipe spare part, and on the other hand device can also carry out the drying to three way catalyst converter, guarantees three way catalyst converter's operating condition.

The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.