CN111412042A

CN111412042A - Tail gas purifying pipe capable of preventing water from entering during wading driving

Info

Publication number: CN111412042A
Application number: CN202010352347.8A
Authority: CN
Inventors: 赵文明
Original assignee: Wenzhou Minglong Automotive Products Co ltd
Current assignee: Wenzhou Minglong Automotive Products Co ltd
Priority date: 2020-04-28
Filing date: 2020-04-28
Publication date: 2020-07-14

Abstract

The invention discloses a tail gas purification pipe capable of preventing water from entering during wading, which comprises a purification pipe, wherein a tail gas washing device is arranged on the purification pipe, the tail gas washing device comprises a washing cavity arranged in the purification pipe, an exhaust device is arranged at the right side of the tail gas washing device, the exhaust device comprises a piston cavity arranged in the purification pipe, the upper end of the right wall of the piston cavity is communicated with a first exhaust port with a rightward opening, the lower end of the right wall of the piston cavity is communicated with a second exhaust port with a rightward opening and an upper wall inclined towards the upper right side, the invention can automatically change an exhaust mode when a vehicle passes through a wading road section and a water level submerges an exhaust pipe, the exhaust device changes a state by using buoyancy of water as power, and in the tail gas exhaust process, the smooth exhaust effect is not influenced, and meanwhile, outside water cannot enter an engine through the exhaust pipe, effectively protecting the power system of the vehicle and avoiding the condition that the vehicle is flameout and paralyzed in water when wading.

Description

Tail gas purifying pipe capable of preventing water from entering during wading driving

Technical Field

The invention relates to the technical field of automobile exhaust purification devices, in particular to an exhaust purification pipe capable of preventing water from entering during wading driving.

Background

Along with the improvement of living standard, more and more vehicles have appeared in the city, automobile exhaust pollution problem along with it is also more and more serious, contain a large amount of harmful substance and gas in the automobile exhaust, serious and threaten people's healthy to the atmospheric pollution, current tail gas purifying tube mostly only has general purification and noise elimination function, when the automobile was gone through the highway section of wading, often can appear that the blast pipe intake leads to unable normal emission tail gas and the condition of flame-out, water even flows backward and leads to the engine to damage in getting into the engine. The present invention sets forth a device that solves the above problems.

Disclosure of Invention

The technical problem is as follows: most of the existing tail gas purifying pipes only have general purifying and silencing functions, and when an automobile runs through a wading road section, the situation that the tail gas cannot be normally discharged due to water entering into an exhaust pipe and the automobile is flamed out often occurs, and even water flows backwards into an engine to cause the damage of the engine.

In order to solve the problems, the embodiment designs the tail gas purifying pipe capable of preventing water from entering during wading running, the tail gas purifying pipe capable of preventing water from entering during wading running comprises a purifying pipe, a tail gas washing device is arranged on the purifying pipe and comprises a washing cavity arranged in the purifying pipe, an air inlet channel is communicated with the left side of the upper wall of the washing cavity, an air outlet channel is communicated with the right side of the upper wall of the washing cavity, water is arranged in the washing cavity, a first rotating shaft is rotatably arranged between the front wall and the rear wall of the washing cavity and above the water level, a fixed sleeve is fixedly arranged on the first rotating shaft, six shifting plates are uniformly distributed and fixedly arranged on the circumferential end surface of the fixed sleeve, the shifting plates stir and beat water to raise water flowers along with the anticlockwise rotation of the fixed sleeve, and wrap a part of tail gas in a water bath, so that the contact area between the tail gas entering the washing cavity and the water is effectively increased, make harmful particulate matter and gas in the tail gas fully dissolve in water, tail gas washing device right side is equipped with exhaust apparatus, exhaust apparatus is including locating piston chamber in the purifying tube, the ventiduct right-hand member communicate in piston chamber left side wall upper end, piston chamber right side wall upper end intercommunication is equipped with the first exhaust port that the opening leaned on the right, piston chamber right side wall lower extreme intercommunication is equipped with the second gas vent that the opening just goes to the upper right side slope right side, when wading water and go and the water level is higher than during the second gas vent, first exhaust port seals and passes through the second gas vent carries out the exhaust exchange and discharges. Preferably, the tail gas washing device comprises a first motor fixedly arranged in the back wall of the washing cavity and positioned at the rear side of the first rotating shaft, the rear end of the first rotating shaft is in power connection with the first motor, the right wall of the washing cavity is in communication with the upper side of the water surface and is provided with a first slider cavity, a first limiting rod is fixedly arranged between the upper wall and the lower wall of the first slider cavity, the first slider cavity can slide up and down and is provided with a first slider connected with the first limiting rod, the left end of the first slider extends into the washing cavity and is fixedly provided with a floating ball, the lower wall of the washing cavity is in communication with a water outlet with a downward opening, the inner wall of the water outlet is in communication with a first baffle cavity, the first baffle cavity can slide left and right and is provided with a first baffle, the water outlet is sealed when the first baffle slides to a left limit position, and a first spring is fixedly connected between the first baffle and the right wall of the first baffle cavity, a first pull wire is fixedly connected between the right end of the first baffle and the lower end of the first sliding block.

Preferably, the exhaust device comprises a first piston which is arranged in the piston cavity in a vertically sliding manner, the upper end surface of the first piston inclines towards the upper right, the first piston is vertically penetrated and fixedly provided with a hollow slide bar, a second piston fixedly connected with the upper end of the hollow slide bar is arranged in the piston cavity and is positioned above the first piston and can slide vertically, the lower end surface of the second piston inclines towards the upper right, a pull rod is arranged in the hollow slide rod and can slide up and down, a connecting groove is arranged on the hollow slide rod and is positioned between the first piston and the second piston in a left-right through way, a third piston is arranged in the piston cavity and positioned between the first piston and the second piston and can slide up and down, the third piston with fixedly connected with passes between the pull rod the connecting block of spread groove, what link up about first piston right side is equipped with the apopore.

Preferably, a first air suction hole is formed in the left side of the second piston in a vertically penetrating manner, a second baffle cavity is communicated with the inner wall of the first air suction hole, a second baffle plate is arranged in the second baffle plate cavity in a left-right sliding manner, a second air suction hole is formed in the second baffle plate in a vertically through manner, when the second baffle is at the right limit position, the second air suction holes are aligned and communicated with the first air suction holes, a second spring is fixedly connected between the right end of the second baffle and the inner wall of the second air suction hole, a second pull wire is fixedly arranged at the right end of the second baffle, one end of the second pull wire penetrates through the second piston, a first magnet is fixedly arranged above the second piston, a second magnet is fixedly arranged on the upper wall of the piston cavity, when the second piston is at the upper limit position, the second magnet attracts the first magnet, and the first magnet pulls the second baffle to slide to the right limit position through the second pull wire.

Preferably, be equipped with the reciprocating cavity in the piston chamber lower wall, reciprocating cavity right side wall internal fixation is equipped with the second motor, second motor left end power is connected with the carousel, hollow slide bar with the pull rod lower extreme extends to reciprocating cavity, the pull rod lower extreme extends to the outer fixed block that just is fixed of hollow slide bar, the fixed block right-hand member face is equipped with the spacing groove of opening right, the carousel left end face is kept away from one side in carousel axle center is fixed to be equipped with the left end and extends to the second gag lever post of spacing inslot.

Preferably, a third baffle cavity is communicated with the lower wall of the first exhaust port, a first floating block cavity is communicated between the lower wall of the third baffle cavity and the second exhaust port, a third baffle is arranged in the third baffle cavity in a vertically sliding manner, when the third baffle slides upwards to a maximum position, the first exhaust port is sealed by the third baffle, a limit cavity is communicated with the left wall of the third baffle cavity, a limit block is arranged in the limit cavity in a vertically sliding manner and is fixedly connected to the third baffle, the lower end of the third baffle penetrates through the first floating block cavity to extend into the second exhaust port and is fixedly provided with a first floating block, a clamping groove with a right opening is arranged at the lower end of the right end face of the third baffle, a clamping block cavity is communicated with the lower end of the right wall of the third baffle cavity, and a clamping block with a left end capable of sliding in the clamping groove is arranged in the clamping block cavity in a horizontally sliding manner, and a third spring is fixedly connected between the clamping block and the inner wall of the clamping block cavity.

Preferably, a second floating block cavity with a right opening is formed in the lower side of the right end face of the purifying pipe, a third limiting rod is fixedly arranged between the upper wall and the lower wall of the third spring, a second floating block which can slide up and down in the second floating block cavity is connected with a second floating block of the third limiting rod in a sliding mode, the second floating block is fixedly connected with an elastic force which is larger than a fourth spring of the third spring between the upper wall of the second floating block cavity, and a third pull wire is fixedly connected between the upper end of the second floating block and the right end of the clamping block.

The invention has the beneficial effects that: the invention can automatically change the exhaust mode when the vehicle runs through the wading road section and the water level submerges the exhaust pipe, the exhaust device changes the state by taking the buoyancy of water as the power, and in the process of exhausting tail gas, the smooth exhaust effect is not influenced, and simultaneously the external water is ensured not to enter the engine through the exhaust pipe, thereby effectively protecting the power system of the vehicle and avoiding the condition that the vehicle is flameout and paralyzed in water during wading running.

Drawings

For ease of illustration, the invention is described in detail by the following specific examples and figures.

FIG. 1 is a schematic view of an overall structure of an exhaust gas purifying pipe for preventing water from entering during wading;

FIG. 2 is a sectional view taken in the direction "A-A" of FIG. 1;

FIG. 3 is a sectional view taken in the direction "B-B" of FIG. 1;

FIG. 4 is an enlarged schematic view of "C" of FIG. 1;

fig. 5 is an enlarged schematic view of "D" of fig. 1.

Detailed Description

The invention will now be described in detail with reference to fig. 1-5, for ease of description, the orientations described below will now be 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 invention relates to a tail gas purifying pipe capable of preventing water from entering during wading driving, which is mainly applied to automobile tail gas purification and engine protection during wading driving, and the invention is further explained by combining the attached drawings of the invention: the invention relates to a tail gas purification pipe capable of preventing water from entering during wading, which comprises a purification pipe 11, wherein a tail gas washing device 101 is arranged on the purification pipe 11, the tail gas washing device 101 comprises a washing cavity 12 arranged in the purification pipe 11, an air inlet channel 13 is communicated with the left side of the upper wall of the washing cavity 12, an air outlet channel 14 is communicated with the right side of the upper wall of the washing cavity 12, water 15 is arranged in the washing cavity 12, a first rotating shaft 16 is rotatably arranged between the front wall and the rear wall of the washing cavity 12 and above the liquid level of the water 15, a fixed sleeve 18 is fixedly arranged on the first rotating shaft 16, six shifting plates 19 are uniformly distributed and fixedly arranged on the circumferential end surface of the fixed sleeve 18, the shifting plates 19 stir and beat the water 15 along with the anticlockwise rotation of the fixed sleeve 18 to lift water flowers, and wrap a part of tail gas in a water bath, so as to effectively increase the contact area of the tail gas entering the washing cavity 12 and the water, make harmful particulate matter and gas in the tail gas fully dissolve in water, tail gas washing device 101 right side is equipped with exhaust apparatus 102, exhaust apparatus 102 is including locating piston chamber 29 in the purge tube 11, gas outlet channel 14 right-hand member communicate in piston chamber 29 left side wall upper end, piston chamber 29 right side wall upper end intercommunication is equipped with the first exhaust port 30 that the opening is to the right, piston chamber 29 right side wall lower extreme intercommunication is equipped with the second gas vent 31 that the opening just inclines to the upper right side of upper wall right, and when wading and go and the water level is higher than when second gas vent 31, first exhaust port 30 seals and passes through second gas vent 31 carries out the tail gas exchange and discharges.

Beneficially, the following detailed description is made on the tail gas washing device 101, the tail gas washing device 101 includes a first motor 17 fixedly disposed in the back wall of the washing cavity 12 and located at the rear side of the first rotating shaft 16, the rear end power of the first rotating shaft 16 is connected to the first motor 17, the right wall of the washing cavity 12 is connected to the upper side of the water 15, a first sliding block cavity 20 is arranged in the upper wall and the lower wall of the first sliding block cavity 20, a first limiting rod 21 is fixedly disposed between the upper wall and the lower wall of the first sliding block cavity 20, the first sliding block cavity 20 can slide up and down and is provided with a sliding connection to a first sliding block 22 of the first limiting rod 21, the left end of the first sliding block 22 extends to a floating ball 23 fixedly disposed in the washing cavity 12, the lower wall of the washing cavity 12 is connected to a water outlet 24 with a downward opening, the inner wall of the water outlet 24 is connected to a first baffle cavity 25, and the first baffle cavity 25 can slide left and right and is provided, when the first baffle 26 slides to the left limit position, the water outlet 24 is closed, a first spring 27 is fixedly connected between the first baffle 26 and the right wall of the first baffle cavity 25, and a first pull wire 28 is fixedly connected between the right end of the first baffle 26 and the lower end of the first slide block 22.

Beneficially, as will be described in detail below, the gas exhaust device 102 includes a first piston 32 disposed in the piston cavity 29 and having an upper end inclined to the upper right, the first piston 32 penetrates through and is fixedly provided with a hollow slide rod 33, a second piston 34 fixedly connected to the upper end of the hollow slide rod 33 is disposed in the piston cavity 29 and located above the first piston 32 and capable of sliding up and down, the lower end of the second piston 34 is inclined to the upper right, a pull rod 35 is disposed in the hollow slide rod 33 and capable of sliding up and down, a connecting groove 36 is disposed on the hollow slide rod 33 and located between the first piston 32 and the second piston 34 and is through left and right, a third piston 38 is disposed in the piston cavity 29 and located between the first piston 32 and the second piston 34 and capable of sliding up and down, a connecting block 37 penetrating through the connecting groove 36 is fixedly connected between the third piston 38 and the pull rod 35, a water outlet 39 is formed in the right side of the first piston 32 and penetrates up and down.

Beneficially, a first air suction hole 40 is formed in the left side of the second piston 34 in a vertically penetrating manner, a second baffle cavity 41 is formed in the inner wall of the first air suction hole 40 in a communicating manner, a second baffle 42 is arranged in the second baffle cavity 41 in a horizontally sliding manner, a second air suction hole 43 is formed in the second baffle 42 in a vertically penetrating manner, when the second baffle 42 is located at the right limit position, the second air suction hole 43 is aligned and communicated with the first air suction hole 40, a second spring 44 is fixedly connected between the right end of the second baffle 42 and the inner wall of the second air suction hole 43, a second pull wire 45 is fixedly arranged at the right end of the second baffle 42, one end of the second pull wire 45 penetrates through the second piston 34 and is fixedly provided with a first magnet 46 above the second piston 34, a second magnet 47 is fixedly arranged on the upper wall of the piston cavity 29, when the second piston 34 is located at the upper limit position, the second magnet 47 attracts the first magnet 46, and the first magnet 46 pulls the second blocking plate 42 to slide to the right to the limit position through the second pull wire 45.

Beneficially, be equipped with reciprocal chamber 48 in the piston chamber 29 lower wall, reciprocal chamber 48 right wall internal fixation is equipped with second motor 49, second motor 49 left end power is connected with carousel 50, hollow slide bar 33 with pull rod 35 lower extreme extends to in the reciprocal chamber 48, pull rod 35 lower extreme extends to hollow slide bar 33 is outer and the fixed block 51 that is equipped with fixedly, fixed block 51 right-hand member face is equipped with opening right spacing groove 52, the carousel 50 left end face is kept away from one side of carousel 50 axle center is fixedly equipped with the left end and extends to second gag lever post 53 in the spacing groove 52.

Beneficially, a third baffle cavity 54 is arranged in communication with the lower wall of the first exhaust port 30, a first floating block cavity 58 is arranged in communication between the lower wall of the third baffle cavity 54 and the second exhaust port 31, a third baffle 55 is arranged in the third baffle cavity 54 in a vertically sliding manner, when the third baffle 55 slides up to an upper limit position, the third baffle 55 seals the first exhaust port 30, a limit cavity 56 is arranged in communication with the left wall of the third baffle cavity 54, a limit block 57 fixedly connected to the third baffle 55 is arranged in the limit cavity 56 in a vertically sliding manner, the lower end of the third baffle 55 penetrates through the first floating block cavity 58 to extend into the second exhaust port 31 and is fixedly provided with a first floating block 59, a clamping groove 60 with a right opening is arranged at the lower end of the right end face of the third baffle 55, a clamping block cavity 61 is arranged in communication with the lower end of the right wall of the third baffle cavity 54, a clamping block 62 capable of sliding left and right in the clamping groove 60 is arranged in the clamping block cavity 61, a third spring 63 is fixedly connected between the latch 62 and the inner wall of the latch cavity 61.

Beneficially, a second floating block cavity 64 with a rightward opening is arranged on the lower side of the right end face of the purifying pipe 11, a third limiting rod 65 is fixedly arranged between the upper wall and the lower wall of the third spring 63, a second floating block 66 slidably connected to the third limiting rod 65 is arranged in the second floating block cavity 64 and can slide up and down, a fourth spring 67 with elastic force larger than that of the third spring 63 is fixedly connected between the second floating block 66 and the upper wall of the second floating block cavity 64, and a third pull wire 68 is fixedly connected between the upper end of the second floating block 66 and the right end of the fixture block 62.

The following will describe in detail the use of an exhaust gas purifying pipe for preventing water from entering during wading with reference to fig. 1 to 5: at the beginning, the first slider 22 is at the lower limit position, the first baffle 26 is at the left limit position and closes the water outlet 24, the first spring 27 is always at the compressed state, the first piston 32, the hollow slide rod 33 and the second piston 34 are at the upper limit position, the pull rod 35 and the third piston 38 are at the upper limit position, the upper end surface of the third piston 38 is abutted against the lower end surface of the second piston 34, the second baffle 42 is at the right limit position, the second suction hole 43 is aligned with and communicated with the first suction hole 40, the second spring 44 is at the compressed state, the first magnet 46 is attracted by the second magnet 47, the third baffle 55 is at the lower limit position, the fixture block 62 is received in the fixture block cavity 61, the third spring 63 is at the compressed state, and the second floating block 66 is at the lower limit position.

During normal work, first motor 17 starts to drive 16 anticlockwise rotations of first pivot, then fixed sleeve 18 rotates with group board 19, automobile exhaust gets into washing chamber 12 from intake duct 13, group board 19 stirs when fixed sleeve 18 anticlockwise and beats water 15 and raise the splash, and wrap up in some tail gas water bath, and then effectively increase the area of contact of tail gas and water that gets into washing chamber 12, make harmful particulate matter and gas in the tail gas fully dissolve in water, tail gas after the washing passes through gas outlet channel 14 and gets into in piston cavity 29, tail gas directly discharges away from first exhaust port 30 through piston cavity 29 when normal highway section traveles.

When wading runs and the water level is higher than the second exhaust port 31, the second floating block cavity 64 is positioned under water, then the second floating block 66 slides upwards under the buoyancy action of water and loosens the third pull wire 68, the first floating block 59 ascends under the buoyancy action and pushes the third baffle 55 to slide upwards to the upper limit position, then the left end of the baffle block 62 extends into the clamping groove 60 to be clamped under the action of the third spring 63, at the moment, the third baffle 55 seals the first exhaust port 30, then the second motor 49 is started to drive the rotary disc 50 to rotate, the fixed block 51 and the pull rod 35 are driven to reciprocate up and down through the second limiting rod 53, the first piston 32 is firstly blocked by water in the process that the pull rod 35 slides downwards to the lower limit position, the pull rod 35 slides downwards relative to the hollow slide rod 33 firstly, so that the lower end face of the third piston 38 is abutted against the upper end face of the first piston 32, and then tail gas entering the piston cavity 29 from the exhaust channel 14 enters between the second piston 34 and the first piston 32 through the first suction hole 40, when the second piston 34 slides downwards, the first magnet 46 is separated from the second magnet 47, the second baffle 42 slides right to close the first air suction hole 40 under the action of the second spring 44, then the pull rod 35 slides downwards continuously to drive the first piston 32 and the hollow slide rod 33 to slide downwards to a lower limit position, then water flows into the space between the second piston 34 and the first piston 32, tail gas is discharged in the form of bubbles along the lower end surface of the second piston 34 and the upper wall of the second air discharge hole 31, in the process of sliding the pull rod 35 upwards, the pull rod 35 slides upwards relative to the first piston 32 and the hollow slide rod 33 firstly to enable the upper end of the third piston 38 to be abutted against the lower end surface of the second piston 34, water between the second piston 34 and the first piston 32 is extruded to the lower side of the third piston 38, then the pull rod 35 pushes the second piston 34 to slide upwards to reset when sliding upwards continuously, and then the first magnet 46 is attracted by the second magnet 47, and the second baffle 42 is reset through the second pull wire 45, then, when the pull rod 35 starts to slide downwards again, the third piston 38 slides downwards to extrude water below the third piston 38 through the water outlet hole 39, and in the process, the tail gas above the second piston 34 is sucked above the third piston 38, and the tail gas is discharged in a reciprocating and circulating manner.

When the automobile is driven out of the wading road section, the second floating block 66 slides downwards under the action of the fourth spring 67, the third pull wire 68 pulls the fixture block 62 to slide right and be accommodated in the fixture block cavity 61, then the left end of the fixture block 62 is separated from the fixture groove 60, the third baffle 55 is unlocked and slides downwards under the action of self gravity to reset, then the first exhaust port 30 restores to the communicated state, and the tail gas is exhausted through the first exhaust port 30.

When the liquid level of the water 15 rises due to the water carried in the automobile exhaust, the floating ball 23 floats upwards by the buoyancy to drive the first sliding block 22 to slide upwards, the first baffle 26 is pulled by the first pull wire 28 to slide rightwards, the water outlet 24 is opened, and the excessive water in the washing cavity 12 is discharged through the water outlet 24.

In the above manner, a person skilled in the art can make various changes depending on the operation mode within the scope of the present invention.

Claims

1. The utility model provides a can prevent to wade into tail gas purification pipe of water when traveling, includes the purge tube, be equipped with tail gas washing device on the purge tube, its characterized in that: the tail gas washing device comprises a washing cavity arranged in the purifying pipe, an air inlet channel is communicated with the left side of the upper wall of the washing cavity, an air outlet channel is communicated with the right side of the upper wall of the washing cavity, water is arranged in the washing cavity, a first rotating shaft is rotatably arranged between the front wall and the rear wall of the washing cavity and above the water level, a fixed sleeve is fixedly arranged on the first rotating shaft, six shifting plates are uniformly and fixedly arranged on the circumferential end surface of the fixed sleeve, the shifting plates are used for stirring and beating water to raise water spray when the fixed sleeve rotates anticlockwise and wrap a part of tail gas in a water bath, so that the contact area between the tail gas entering the washing cavity and the water is effectively increased, harmful particles and gases in the tail gas are fully dissolved in the water, an exhaust device is arranged on the right side of the tail gas washing device and comprises a piston cavity arranged in the purifying pipe, the ventiduct right-hand member communicate in piston chamber left side wall upper end, piston chamber right side wall upper end intercommunication is equipped with the first gas vent that the opening is to the right, piston chamber right side wall lower extreme intercommunication is equipped with the opening right and the second gas vent that the upper wall inclines to the upper right, when wading and go and the water level is higher than during the second gas vent, first gas vent seals and passes through the second gas vent carries out the exhaust gas exchange and discharges.

2. An exhaust gas purifying pipe for preventing water from entering during wading, as recited in claim 1, wherein: the tail gas washing device comprises a first motor which is fixedly arranged in the back wall of the washing cavity and positioned at the rear side of the first rotating shaft, the rear end of the first rotating shaft is in power connection with the first motor, the right wall of the washing cavity is positioned at the upper side of the water liquid surface and is communicated with a first slider cavity, a first limiting rod is fixedly arranged between the upper wall and the lower wall of the first slider cavity, the first slider cavity can be internally provided with a first slider which is in up-and-down sliding connection with the first limiting rod, the left end of the first slider extends into the washing cavity and is fixedly provided with a floating ball, the lower wall of the washing cavity is communicated with a water outlet with a downward opening, the inner wall of the water outlet is communicated with a first baffle cavity, the first baffle cavity can be internally provided with a first baffle in a left-and-right sliding manner, the water outlet is sealed when the first baffle slides to a left limit position, and a first spring is fixedly connected between the first baffle and the right wall of the first baffle cavity, a first pull wire is fixedly connected between the right end of the first baffle and the lower end of the first sliding block.

3. An exhaust gas purifying pipe for preventing water from entering during wading, as recited in claim 1, wherein: the exhaust device comprises a first piston which is arranged in the piston cavity in a vertically sliding manner and the upper end of the first piston inclines towards the upper right, the first piston is vertically penetrated and fixedly provided with a hollow slide bar, a second piston fixedly connected with the upper end of the hollow slide bar is arranged in the piston cavity and is positioned above the first piston and can slide vertically, the lower end surface of the second piston inclines towards the upper right, a pull rod is arranged in the hollow slide rod and can slide up and down, a connecting groove is arranged on the hollow slide rod and is positioned between the first piston and the second piston in a left-right through way, a third piston is arranged in the piston cavity and positioned between the first piston and the second piston and can slide up and down, the third piston with fixedly connected with passes between the pull rod the connecting block of spread groove, what link up about first piston right side is equipped with the apopore.

4. An exhaust gas purifying pipe according to claim 3, wherein the exhaust gas purifying pipe is capable of preventing water from entering during wading, and comprises: a first air suction hole is arranged on the left side of the second piston in a vertically through manner, a second baffle cavity is communicated with the inner wall of the first air suction hole, a second baffle plate is arranged in the second baffle plate cavity in a left-right sliding manner, a second air suction hole is formed in the second baffle plate in a vertically through manner, when the second baffle is at the right limit position, the second air suction holes are aligned and communicated with the first air suction holes, a second spring is fixedly connected between the right end of the second baffle and the inner wall of the second air suction hole, a second pull wire is fixedly arranged at the right end of the second baffle, one end of the second pull wire penetrates through the second piston, a first magnet is fixedly arranged above the second piston, a second magnet is fixedly arranged on the upper wall of the piston cavity, when the second piston is at the upper limit position, the second magnet attracts the first magnet, and the first magnet pulls the second baffle to slide to the right limit position through the second pull wire.

5. An exhaust gas purifying pipe according to claim 3, wherein the exhaust gas purifying pipe is capable of preventing water from entering during wading, and comprises: be equipped with reciprocating cavity in the piston chamber lower wall, reciprocating cavity right side wall internal fixation is equipped with the second motor, second motor left end power is connected with the carousel, hollow slide bar with the pull rod lower extreme extends to reciprocating cavity, the pull rod lower extreme extends to the outer fixed block that just is fixed to be equipped with of hollow slide bar, the fixed block right-hand member face is equipped with the opening spacing groove to the right, the carousel left end face is kept away from one side in carousel axle center is fixed to be equipped with the left end and extends to the second gag lever post of spacing inslot.

6. An exhaust gas purifying pipe for preventing water from entering during wading, as recited in claim 1, wherein: a third baffle plate cavity is communicated with the lower wall of the first exhaust port, a first floating block cavity is communicated between the lower wall of the third baffle plate cavity and the second exhaust port, a third baffle plate is arranged in the third baffle plate cavity in a vertically sliding manner, said third flap closing said first exhaust opening when said third flap is slid up to an upper limit position, a limiting cavity is communicated with the left wall of the third baffle cavity, a limiting block fixedly connected with the third baffle is arranged in the limiting cavity in a vertically sliding manner, the lower end of the third baffle passes through the first floating block cavity, extends into the second exhaust port and is fixedly provided with a first floating block, the lower end of the right end face of the third baffle plate is provided with a clamping groove with a rightward opening, the lower end of the right wall of the cavity of the third baffle plate is communicated with a clamping block cavity, the clamping block cavity is internally provided with a clamping block which can slide left and right, the left end of the clamping block can extend into the clamping groove, and a third spring is fixedly connected between the clamping block and the inner wall of the clamping block cavity.

7. An exhaust purifying pipe for preventing water inflow in wading traveling according to claim 6, wherein: the purifying tube right-hand member face downside is equipped with the second floating block chamber that the opening is right, the fixed third gag lever post that is equipped with between the lower wall on the third spring, the gliding sliding connection that is equipped with about second floating block intracavity in the second floating block chamber in the second floating block of third gag lever post floats, the second floating block with fixedly connected with elasticity is greater than between the second floating block chamber upper wall the fourth spring of third spring, second floating block upper end with fixedly connected with third stay wire between the fixture block right-hand member.