CN220791337U - Large-displacement tail gas muffler and mining vehicle using same - Google Patents

Abstract

The utility model provides a large-displacement tail gas muffler and an ore-mining vehicle using the same. The large-displacement exhaust muffler comprises: the top of the shell is provided with an air inlet pipe, and one side of the shell, which is far away from the air inlet pipe, is provided with an air outlet pipe; the first-stage muffler plate divides the interior of the shell into a first-stage muffler cavity and a second-stage muffler cavity, the air inlet pipe is communicated with the first-stage muffler cavity, the air outlet pipe is communicated with the second-stage muffler cavity, the muffler plates outside the first stage are arranged in the second-stage muffler cavity, a plurality of muffler holes are respectively and vertically staggered on the plurality of muffler plates, and the plurality of muffler holes of the muffler plate of the first stage are arranged at the upper part; the silencing pipe is arranged in the primary silencing cavity, the upper end of the silencing pipe is connected with the air inlet pipe, the lower end of the silencing pipe extends to the bottom of the primary silencing cavity and is provided with a plurality of air outlets, and the side wall of the silencing pipe is hollow and filled with a plurality of damping particles. The exhaust silencing effect and the exhaust efficiency can be improved.

Description

Large-displacement tail gas muffler and mining vehicle using same

Technical Field

The utility model relates to the field of tail gas mufflers, in particular to a large-displacement tail gas muffler and an ore vehicle using the same.

Background

The mining vehicle belongs to an off-highway vehicle, is mainly used for mines and engineering, and is more durable and more loaded than a general loading vehicle. The tail gas emission process of the mining vehicle can carry a large amount of noise generated by the engine, and if the noise pollution is caused by direct emission, a muffler is required to be arranged at the tail gas exhaust end of the mining vehicle for noise elimination.

At present, the existing tail gas muffler is characterized in that a plurality of air inlet pipes with small holes, transition pipes and other return pipelines are arranged in a shell, so that air flows pass through the return pipelines under the action of air pressure, the air flows interfere and offset each other when flowing and are overlapped to weaken sound intensity, sound is reduced, and the silencing effect is achieved.

However, the exhaust gas amount of the mining vehicle is large, if the tail gas muffler with the roundabout pipeline is used for silencing, the exhaust gas is easy to be unsmooth due to low flow efficiency of the gas with the narrower pipeline, and potential safety hazards are generated due to overheating in the muffler.

Therefore, designing a large-displacement exhaust muffler and an mining vehicle using the same is an object of the present utility model for research in view of the problems of the prior art.

Disclosure of Invention

Aiming at the problems in the prior art, the utility model provides a large-displacement tail gas muffler and an ore vehicle using the same, which can effectively solve the problems in the prior art.

The technical scheme of the utility model is as follows:

a large displacement exhaust muffler comprising:

the top of the shell is provided with an air inlet pipe, and one side of the shell, which is far away from the air inlet pipe, is provided with an air outlet pipe;

the muffler plates are vertically arranged in the shell in a spaced mode and are arranged in a horizontal step-by-step mode, the interior of the shell is divided into a primary muffler cavity and a secondary muffler cavity by the muffler plates of a first stage, the air inlet pipe is communicated with the primary muffler cavity, the air outlet pipe is communicated with the secondary muffler cavity, the muffler plates outside the first stage are arranged in the secondary muffler cavity, a plurality of muffler holes are respectively arranged on the muffler plates in a staggered mode, and a plurality of muffler holes of the muffler plates of the first stage are arranged on the upper portion;

the muffler pipe is arranged in the primary muffler cavity, the upper end of the muffler pipe is connected with the air inlet pipe, the lower end of the muffler pipe extends to the bottom of the primary muffler cavity and is provided with a plurality of air outlets, the side wall of the muffler pipe is hollow and is filled with a plurality of damping particles, tail gas enters the muffler pipe and passes through a plurality of the damping particles to be muffled and then enters the bottom of the primary muffler cavity through a plurality of the air outlets, and after the upward flow passes through a plurality of the damping particles to be muffled again, the tail gas enters the secondary muffler cavity through a plurality of muffling small holes of the muffler plate of the first stage to carry out up-down wave type flow muffling.

Further, the plurality of air outlets comprise a first pipe orifice with a downward opening, a second pipe orifice with an opening facing the first stage of the muffler plate, and a third pipe orifice with an opening facing away from the first stage of the muffler plate, the first pipe orifice extends to be arranged at intervals with the inner bottom of the shell, the second pipe orifice extends to be arranged at intervals with the muffler plate of the first stage of the muffler plate, the third pipe orifice extends to be arranged at intervals with the inner side wall of the shell, and when tail gas is sprayed out and flows upwards through the first pipe orifice, the second pipe orifice and the third pipe orifice, sound waves are driven to dial upwards to collide between the muffler pipe and the muffler plate of the first stage of the muffler plate and the inner wall of the shell, and the tail gas flows into the second-stage muffler cavity after being subjected to noise elimination again through the plurality of damping particles.

Further, the inner diameter of the first nozzle is larger than the inner diameter of the third nozzle, and the inner diameter of the third nozzle is larger than the inner diameter of the second nozzle.

Further, the lower end of the air inlet pipe penetrates through the primary silencing cavity, an annular filler opening communicated to the side wall of the primary silencing cavity is formed in the top of the silencing pipe, a plurality of damping particles are filled into the side wall of the silencing pipe through the filler opening, and the lower end of the air inlet pipe is inserted into the filler opening in a sealing mode.

Further, the plurality of silencing small holes of the silencing plates are respectively and uniformly arranged at the upper half part or the lower half part at intervals, and the air outlet pipe and the silencing small holes of the silencing plates of the last stage are arranged in a vertically staggered mode.

Further, the number of the silencing plates is three, the second-stage silencing plates and the third-stage silencing plates divide the second-stage silencing cavity into a first cavity, a second cavity and a third cavity with gradually increased volumes, a plurality of silencing small holes of the second-stage silencing plates and the third-stage silencing plates are respectively arranged at the lower part and the upper part, the diameters of a plurality of silencing small holes of the first-stage silencing plates, the second-stage silencing plates and the third-stage silencing plates are gradually increased, and the air outlet pipe is arranged at the lower part of the side wall of the shell.

Further, the damping particles are spherical ceramic-based damping particles.

The mining vehicle comprises a vehicle body, an engine assembly arranged at the bottom of the vehicle body and the large-displacement tail gas muffler, wherein the air outlet end of the engine assembly is communicated with the air inlet pipe through an exhaust pipe.

Accordingly, the present utility model provides the following effects and/or advantages:

1. according to the large-displacement tail gas muffler and the mining vehicle using the same, the plurality of muffler plates and the muffler pipes are arranged in the muffler shell, so that when tail gas enters the muffler pipes through the air inlet pipes, the plurality of damping particles in the pipe walls rub against each other to consume energy to absorb and reduce noise, the tail gas enters the bottom of the primary muffler cavity through the plurality of air outlets after being subjected to primary muffler treatment, flows upwards and enters the secondary muffler cavity through the plurality of muffler holes of the muffler plates of the first stage after being subjected to secondary muffler treatment, the primary muffler with the secondary muffler treatment is completed, and the tail gas flows upwards and downwards in a wave-shaped manner through the plurality of muffler holes of the muffler plates outside the first stage through the upper and lower staggered guide of the muffler holes to be discharged through the air outlet pipe after the secondary muffler is completed. Therefore, the exhaust is subjected to multiple silencing and noise reduction through the silencing pipe and the silencing plates, the silencing effect on the tail gas of the mining vehicle is improved, meanwhile, the internal structure of the silencer is simplified, the distribution of pipelines is reduced, the internal tail gas flowing space is improved, the phenomenon that the internal gas flows unsmoothly when the silencer is connected with the exhaust pipe of the mining vehicle with large emission is avoided, the exhaust emission efficiency is improved, and potential safety hazards caused by overheating in the silencer are avoided.

2. According to the large-displacement tail gas muffler and the mining vehicle using the same, the first pipe orifice extends to be arranged at intervals with the inner bottom of the shell, the second pipe orifice extends to be arranged at intervals with the first-stage muffler plate, the third pipe orifice extends to be arranged at intervals with the inner side wall of the shell, and the first pipe orifice, the second pipe orifice and the third pipe orifice are arranged, so that when tail gas is sprayed out from the first pipe orifice, the second pipe orifice and the third pipe orifice and flows upwards, the tail gas flows from the far end towards a plurality of muffler small holes of the first-stage muffler plate, the contact area of the tail gas and the outer wall of the muffler pipe is increased, the tail gas impacts the lower part of the first-stage muffler plate and the inner wall of the shell, the stirring amplitude of a sound wave propagation path is increased, sound waves are driven to stir upwards between the muffler pipe and the first-stage muffler plate and the inner wall of the shell, and flow into the second-stage muffler cavity after being re-muffled by a plurality of damping particles, and the muffling effect of the muffler pipe on the tail gas is further increased.

3. The utility model provides a large-displacement tail gas muffler and an ore vehicle using the same, wherein the number of muffler plates is three, a second-stage muffler cavity and a third-stage muffler cavity are divided into a first cavity, a second cavity and a third cavity with gradually increased volumes by the second-stage muffler plate and the third-stage muffler plate, a plurality of muffler holes of the second-stage muffler plate and the third-stage muffler plate are respectively arranged at the lower part and the upper part, the diameters of a plurality of muffler holes of the first-stage muffler plate, the second-stage muffler plate and the third-stage muffler plate are gradually increased, and an air outlet pipe is arranged at the lower part of the side wall of a shell. Therefore, when the gas flow quantity in the secondary silencing cavity is improved, the tail gas is subjected to secondary silencing treatment in the primary silencing cavity, and in the process of flowing through the secondary silencing cavity in an up-down wavy mode, as the volumes of the first cavity, the second cavity and the third cavity are gradually increased, the diameters of a plurality of silencing small holes of the silencing plates of the first stage, the second stage and the third stage are gradually increased, so that the total passing area of the tail gas is gradually increased, and expansion silencing is realized on the tail gas in the secondary silencing cavity.

It is to be understood that both the foregoing general description and the following detailed description of the present utility model are exemplary and explanatory and are intended to provide further explanation of the utility model as claimed.

Drawings

Fig. 1 is a schematic perspective view of a large-displacement exhaust muffler provided by the utility model.

Fig. 2 is a schematic cross-sectional view of fig. 1.

Fig. 3 is a schematic diagram of an explosion structure of the muffler pipe and a plurality of muffler plates provided by the utility model.

Fig. 4 is a schematic side view of the mining vehicle provided by the utility model.

Detailed Description

For the convenience of understanding by those skilled in the art, the structure of the present utility model will now be described in further detail with reference to the accompanying drawings:

referring to fig. 1-4, a large displacement exhaust muffler includes a vehicle body and an exhaust muffler, the exhaust muffler comprising:

the top of the shell 1 is provided with an air inlet pipe 11, and one side of the shell 1 away from the air inlet pipe 11 is provided with an air outlet pipe 12; in order to improve the overall structural strength of the tail gas muffler, the shell is in a hollow cylindrical shape;

the muffler plates 2 are vertically arranged in the shell 1 in a spaced mode and are arranged in a horizontal step-by-step mode, the muffler plates 2 of the first stage divide the interior of the shell 1 into a first-stage muffler cavity 13 and a second-stage muffler cavity 14, the air inlet pipe 11 is communicated with the first-stage muffler cavity 13, the air outlet pipe 12 is communicated with the second-stage muffler cavity 14, the muffler plates 2 outside the first stage are arranged in the second-stage muffler cavity 14, a plurality of muffler holes 21 are respectively staggered up and down on the muffler plates 2, so that the flow of tail gas is guided in an up-down wave mode, the muffler holes 21 of the muffler plates 2 of the first stage are arranged on the upper portion, and noise carried by the tail gas is weakened by friction collision after passing through the muffler holes 21;

the muffler pipe 3 is disposed in the primary muffler cavity 13, the upper end of the muffler pipe 3 is connected with the air inlet pipe 11, the lower end of the muffler pipe 3 extends to the bottom of the primary muffler cavity 13 and is provided with a plurality of air outlets 31, the side wall of the muffler pipe 3 is hollow and filled with a plurality of damping particles 32, in this embodiment, the damping particles 32 are spherical ceramic-based damping particles, so that when the tail gas flows into the inner wall and the outer wall of the muffler pipe 3, the effect of obviously and effectively reducing vibration and noise is formed by the friction energy consumption between the spherical ceramic-based damping particles, the two times of noise elimination and noise reduction can be realized on the tail gas in the primary muffler cavity, and in other embodiments, the damping particles 32 can also be made of other materials such as glass particles and the like, thereby realizing the noise reduction on the tail gas and the high temperature carried by the mine car tail gas.

Through the arrangement of the structure, when the tail gas enters the silencing pipe 3 through the air inlet pipe 11, the damping particles 32 in the pipe wall are rubbed with each other to consume energy to absorb shock and reduce noise, so that the tail gas enters the bottom of the primary silencing cavity 13 through the air outlets 31 after being subjected to primary silencing treatment, flows upwards and enters the secondary silencing cavity 14 through the silencing small holes 21 of the silencing plate 2 of the primary after being subjected to secondary silencing treatment through the damping particles 32, primary silencing with a secondary silencing process is finished, and the tail gas flows upwards and downwards in a staggered guide mode through the silencing small holes 21 and is discharged from the air outlet pipe 12 after being subjected to secondary silencing through the silencing small holes 21 of the silencing plate 2 outside the primary. Therefore, the multiple silencing and noise reduction of tail gas is realized through the silencing pipe 3 and the silencing plates 2, the silencing effect of the tail gas of the mining vehicle is improved, the internal structure of the silencer is simplified, the distribution of pipelines is reduced, the internal tail gas flowing space is improved, the phenomenon that the internal gas flows unsmoothly when the silencer is connected with the exhaust pipe of the mining vehicle with large emission is avoided, the exhaust emission efficiency is improved, and the potential safety hazard caused by overheating in the silencer is avoided.

In order to improve the contact area between the tail gas and the outer wall of the silencing tube 3 after entering the primary silencing cavity 13, and improve the stirring amplitude of the sound wave propagation path carried by the tail gas, the plurality of air outlets 31 comprise a first pipe orifice 311 with a downward opening, a second pipe orifice 312 with a downward opening facing the primary silencing plate 2 and a third pipe orifice 313 with a downward opening facing away from the primary silencing plate 2, the first pipe orifice 311 extends to be arranged at a distance from the inner bottom of the shell 1, the second pipe orifice 312 extends to be arranged at a distance from the silencing plate 2 of the primary silencing plate, the third pipe orifice 313 extends to be arranged at a distance from the inner wall of the shell 1, and when the tail gas is sprayed out and flows upwards through the first pipe orifice 311, the second pipe orifice 312 and the third pipe orifice 313, the tail gas flows towards a plurality of small holes 21 of the silencing plate 2 of the primary silencing plate by the far end, so that the contact area between the tail gas and the outer wall of the silencing tube 3 is improved, the tail gas impacts the lower part of the silencing plate 2 and the inner wall of the shell 1 to improve the stirring amplitude of the sound wave propagation path, the third pipe orifice 313 extends to be arranged at a distance from the inner wall of the silencing plate 2, the sound wave propagation path is further improved, the tail gas is driven to flow between the silencing plate 3 and the silencing plate 1 and the silencing plate through the sound wave propagation path, and the sound wave flows upwards through the silencing plate 32.

In order to further increase the contact area between the tail gas entering the primary silencing cavity 13 and the outer wall of the silencing tube 3, the inner diameter of the first tube orifice 311 is larger than the inner diameter of the third tube orifice 313, and the inner diameter of the third tube orifice 313 is larger than the inner diameter of the second tube orifice 312, so that the amount of the tail gas flowing out of the third tube orifice 313 is increased, the amount of the tail gas flowing out of the second tube orifice 312 is reduced, the distance of the tail gas flowing through the outer wall of the silencing tube is increased, and the contact area between the tail gas and the outer wall of the silencing tube 3 is increased.

In order to facilitate the disassembly and assembly of the muffler pipe 3 and the filling of a plurality of damping particles 32, the lower end of the air inlet pipe 11 penetrates into the primary muffler cavity 13, an annular filler opening 33 communicated into the side wall of the muffler pipe 3 is arranged at the top of the muffler pipe 3, a plurality of damping particles 32 are filled into the side wall of the muffler pipe 3 through the filler opening 33, the lower end of the air inlet pipe 11 is inserted into the filler opening 33 in a sealing manner, and specifically, the lower end of the air inlet pipe 11 is inserted into the filler opening 33 in an interference fit manner.

In order to improve the fluency of the tail gas flowing in the secondary silencing cavity 14, and simultaneously improve the silencing effect of the silencing small holes 21, the silencing small holes 21 of the silencing plates 2 are uniformly arranged at intervals on the upper half part or the lower half part respectively, and the air outlet pipe 12 and the silencing small holes 21 of the silencing plates 2 of the last stage are arranged in a vertically staggered mode.

Specifically, in this embodiment, in order to avoid that when the muffler plates 2 are too dense to cause a large exhaust gas amount, the gas flow efficiency is low to cause unsmooth exhaust gas, the number of the muffler plates 2 is set to three, the second-stage and third-stage muffler plates 2 divide the second-stage muffler chamber 14 into a first cavity 141, a second cavity 142 and a third cavity 143 with gradually increasing volumes, the plurality of muffler holes 21 of the second-stage and third-stage muffler plates 2 are set to a lower portion and an upper portion, respectively, and the diameters of the plurality of muffler holes 21 of the first-stage, second-stage and third-stage muffler plates 2 are increased stepwise, and the outlet pipe 12 is provided at the lower portion of the side wall of the housing 1. Therefore, after the tail gas is subjected to secondary silencing treatment of the primary silencing cavity 13, in the process of flowing through the secondary silencing cavity 14 in an up-down wavy mode, the volumes of the first cavity 141, the second cavity 142 and the third cavity 143 are gradually increased, and meanwhile, the diameters of the silencing small holes 21 of the silencing plates 2 of the first stage, the second stage and the third stage are gradually increased, so that the total passing area of the tail gas is gradually increased, and expansion silencing of the tail gas is realized in the secondary silencing cavity 14.

The mining vehicle comprises a vehicle body 4, an engine assembly 5 arranged at the bottom of the vehicle body 4 and the large-displacement tail gas muffler, wherein the air outlet end of the engine assembly 5 is communicated with the air inlet pipe 11 through an exhaust pipe 6, so that the emission and the noise elimination effect of the mining vehicle tail gas muffler are improved, and the emission efficiency is improved.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, and various modifications and variations may be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (8)

1. A large displacement exhaust muffler, comprising:

the air inlet pipe (11) is arranged at the top of the shell (1), and an air outlet pipe (12) is arranged at one side of the shell (1) away from the air inlet pipe (11);

the silencer comprises a shell (1), a plurality of silencing plates (2), a first-stage silencing plate (2) and an air inlet pipe (11), wherein the silencing plates are vertically arranged in the shell (1) at intervals step by step along the transverse direction, the interior of the shell (1) is divided into a first-stage silencing cavity (13) and a second-stage silencing cavity (14), the air inlet pipe (11) is communicated with the first-stage silencing cavity (13), the air outlet pipe (12) is communicated with the second-stage silencing cavity (14), the silencing plates (2) except the first-stage silencing plates are arranged in the second-stage silencing cavity (14), a plurality of silencing small holes (21) are respectively arranged on the silencing plates (2) in an up-down staggered mode, and the silencing small holes (21) of the silencing plates (2) of the first-stage are arranged on the upper portion;

the muffler pipe (3) is arranged in the primary muffler cavity (13) and the upper end is connected with the air inlet pipe (11), the lower end of the muffler pipe (3) extends to the bottom of the primary muffler cavity (13) and is provided with a plurality of air outlets (31), the side wall of the muffler pipe (3) is hollow and is filled with a plurality of damping particles (32), tail gas enters the muffler pipe (3) and enters the bottom of the primary muffler cavity (13) through a plurality of the air outlets (31) after being muffled by the damping particles (32), and after being muffled again by the damping particles (32), the tail gas enters the secondary muffler cavity (14) through a plurality of muffling small holes (21) of the first-stage muffler plate (2) to carry out up-down wave flow muffling.

2. A large-displacement exhaust muffler as claimed in claim 1, wherein the plurality of air outlets (31) comprise a first nozzle (311) with an opening facing downwards, a second nozzle (312) with an opening facing towards the muffler plate (2) of the first stage, and a third nozzle (313) with an opening facing away from the muffler plate (2) of the first stage, the first nozzle (311) extends to be spaced from the inner bottom of the housing (1), the second nozzle (312) extends to be spaced from the muffler plate (2) of the first stage, the third nozzle (313) extends to be spaced from the inner side wall of the housing (1), and when the exhaust gas is ejected and flows upwards through the first nozzle (311), the second nozzle (312) and the third nozzle (313), sound waves are driven to collide upwards between the muffler pipe (3) and the muffler plate (2) of the first stage and the inner wall of the housing (1), and flow into the second-stage sound chamber (14) after being re-muffled by the plurality of damping particles (32).

3. A large displacement exhaust muffler as claimed in claim 2, wherein the first nozzle (311) has an inner diameter greater than an inner diameter of the third nozzle (313), the third nozzle (313) having an inner diameter greater than an inner diameter of the second nozzle (312).

4. A large-displacement exhaust muffler as claimed in claim 1, wherein the lower end of the intake pipe (11) penetrates into the primary muffler chamber (13), the top of the muffler pipe (3) is provided with an annular filler port (33) communicated into the side wall thereof, a plurality of damping particles (32) are filled into the side wall of the muffler pipe (3) through the filler port (33), and the lower end of the intake pipe (11) is inserted into the filler port (33) in a sealing manner.

5. A large-displacement exhaust muffler as claimed in claim 1, wherein the muffler holes (21) of the muffler plates (2) are uniformly spaced at upper or lower halves, respectively, and the air outlet pipe (12) is staggered up and down with the muffler holes (21) of the muffler plates (2) of the last stage.

6. A large-displacement exhaust muffler as claimed in claim 1, wherein the number of the muffler plates (2) is three, the second-stage and third-stage muffler plates (2) divide the second-stage muffler chamber (14) into a first cavity (141), a second cavity (142) and a third cavity (143) with gradually increasing volumes, a plurality of muffler holes (21) of the second-stage and third-stage muffler plates (2) are respectively provided at lower and upper portions, and the diameters of the plurality of muffler holes (21) of the first-stage, second-stage and third-stage muffler plates (2) are gradually increased, and the air outlet pipe (12) is provided at the lower portion of the side wall of the housing (1).

7. A large displacement exhaust muffler as claimed in claim 1, wherein the damping particles (32) are provided as spherical ceramic-based damping particles.

8. A mining vehicle, characterized by comprising a vehicle body (4), an engine assembly (5) arranged at the bottom of the vehicle body (4), and the large-displacement exhaust muffler according to any one of claims 1 to 7, wherein the air outlet end of the engine assembly (5) is communicated with the air inlet pipe (11) through an exhaust pipe (6).