CN2182882Y

CN2182882Y - Taper-like spiral wind type apparatus as silencer for purifying exhaust of automobile

Info

Publication number: CN2182882Y
Application number: CN93242198U
Authority: CN
Inventors: 王德利; 周忠庆
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-10-13
Filing date: 1993-10-13
Publication date: 1994-11-16
Anticipated expiration: 2003-10-13

Abstract

The utility model provides a cone spiral wind type silencing device for purifying exhaust gas of an automobile, and belongs to automotive parts. The utility model is suitable for eliminating environmental pollution caused by the tail gas and the noise of an automobile. The utility model comprises an air inlet pipe, an outer housing, a silencing plate, an inner cylinder, an insulation blanket, a catalyst carrier, an inner cylinder sealing ring, a spiral silencing plate and an exhaust pipe, etc. The utility model has simple structure, convenient installation, purifying and silencing double effect, long service life and less oil consumption, and is a late-model product with environmental protection, energy saving and high social benefit and economic benefit.

Description

Taper-like spiral wind type apparatus as silencer for purifying exhaust of automobile

The utility model provides a kind of cone vortex type purifying vehicle exhaust silencing apparatus, belongs to auto parts machinery, is fit to the usefulness of the environmental pollution that tail gas and noise caused of elimination automobile.

The tail gas of automobile and noise have become two big " public hazards " of social environment, CN2030259U, the patent No. 88203124.1 " automobile exhaust gas purifying silencing apparatus " adopts the granular catalytic carrier, its deficiency is that the carrier vapour lock is big, particle is easily broken during temperature rise, and the air-flow instability is easy to generate fault when causing waste gas to efflux, reduce engine power, increase oil consumption etc.Its structure is to adopt garden column structure, and the characteristics of this structure are that vapour lock is big, and the noise elimination effect is undesirable.So far, Shang Weiyou adopts the automobile tail gas noise elimination device of cordierite ceramic honeycomb Cylinder many small catalysts carrier and cone vortex type structure simultaneously.

It is big that the purpose of this utility model is to overcome the existing existing carrier vapour lock of automobile exhaust gas purifying silencing apparatus, the air-flow instability, be easy to generate fault, reduce engine power, deficiencys such as increase oil consumption and noise elimination effect are undesirable, thereby provide a kind of cone vortex type purifying vehicle exhaust silencing apparatus, it adopts rare earth metal to make many small catalysts of cordierite ceramic honeycomb Cylinder carrier of catalyzer, and employing cone vortex type structure, to purify with noise elimination and combine together, the tail gas that makes motor vehicle emission under inner uniform temperature with catalyzer generation oxidation-reduction reaction, harmful gas is converted into outside nontoxic carbon dioxide and the water discharge machine, the noise that automobile is sent, under conditionings such as muffler plate and tail end cone and whirlwind quickening airspeed,, make NR noise reduction by multistage decay, purify and the double effects of eliminating the noise thereby reach, it is simple in structure, and is easy for installation, and the life-span is long, effective, social benefit and economic benefit height.

The utility model is realized by following approach:

The utility model includes parts such as suction tude, shell, muffler plate, inner core, insulation blanket, catalyst carrier, inner core seal ring, spiral muffler plate and outlet pipe, in said inner core, be provided with uniform at interval two catalyst carriers of wrapping up with insulation blanket respectively at least, end at inner core is provided with the inner core seal ring, the other end is provided with muffler plate, go into suction tude in muffler plate one termination then, at outlet pipe that is welded with the spiral muffler plate of inner core seal ring one termination, load onto shell then.

Said suction tude and outlet pipe are the garden column tubes, and respectively being provided with at least three hundred diameters on its garden cylinder is the hole of 2-5 millimeter; Said shell is that upper and lower two halves are welded, and is provided with at least four muscle in the middle, is respectively equipped with big cone and cone at its tail head two ends; Said muffler plate is to be provided with the hole that at least 150 diameters are the 2-5 millimeter on the sheet metal of garden shape; Said inner core is the garden tube that is welded by the upper and lower two halves of symmetry; Said insulation blanket is made by thermal-protective material; Said catalyst carrier is that steinheilite Zhi Cheng And is added with many small catalysts of ceramic honeycomb Cylinder carrier that rare earth metal is made catalyzer; Said inner core seal ring is a thin iron hoop; Said spiral muffler plate is that taper and helix angle are the 15-35 degree.

Accompanying drawing is the utility model embodiment's a half section schematic representation, wherein: 1-outlet pipe, 2-shell, 3-spiral muffler plate, 4-inner core seal ring, the 5-inner core, 6-catalyst carrier, 7-insulation blanket, 8-muffler plate, the 9-suction tude, 10-muscle, the big cone of 11-, 12-cone.

The utility model describes in detail below with reference to accompanying drawing embodiment:

The utility model embodiment includes parts such as suction tude 9, shell 2, muffler plate 8, inner core 5, insulation blanket 7, catalyst carrier 6, inner core seal ring 4, spiral muffler plate 3 and outlet pipe 1, in said inner core 5, be provided with uniform at interval four catalyst carriers 6 of wrapping up with insulation blanket 7 respectively, end at inner core 5 is provided with inner core seal ring 4, the other end is provided with muffler plate 8, go into suction tude 9 in muffler plate 8 one terminations then, at outlet pipe 1 that is welded with spiral muffler plate 3 of inner core seal ring 4 one terminations, load onto shell 2 then.

Said suction tude 9 and outlet pipe 1 are the garden column tubes, respectively are provided with 400 diameters and are 5 millimeters hole on its garden cylinder; Said shell 2 is welded for upper and lower two halves, is provided with four muscle 10 in the middle, is respectively equipped with big cone 11 and cone 12 at its tail head two ends; Said muffler plate 8 is that to be provided with 200 diameters on the iron plate of garden shape be 5 millimeters hole; Said inner core 5 is the garden tubes that are welded by the upper and lower two halves of symmetry; Said insulation blanket 7 is made by asbestos; Said catalyst carrier 6 is added with many small catalysts of ceramic honeycomb Cylinder carrier that rare earth metal is made catalyzer for steinheilite Zhi Cheng And; Said inner core seal ring 4 is thin iron hoops; Said spiral muffler plate 3 is a taper, and helix angle is 15 degree.

When using the utility model embodiment, the outlet pipe of suction tude 9 with motor car engine joined, behind the vehicle starting, suction tude 9 and the muffler plate 8 of the gas that engine emission goes out by present embodiment enters multistage catalyst carrier 6 and carries out oxidation-reduction reaction, and harmful gases such as carbon monoxide, hydrocarbon, oxynitrides are converted into carbon dioxide and water.Under the acting in conjunction of big cone 11 of tail end and spiral muffler plate 3, accelerate airspeed, with the minimizing vapour lock, thereby reach the reduction oil consumption.Overcome the purpose of power loss.Meanwhile, noise greatly reduces noise through the repeatedly decay of muffler plate 8, multistage catalyst carrier 6 and spiral muffler plate 8 and outlet pipe, thus the dual purpose that reaches purification, eliminates the noise.

The utility model contrast prior art has following advantage:

1, the utility model is owing to the ceramic honeycomb Cylinder many small catalysts carrier and the taper-like spiral wind type structure that have adopted cordierite to make, therefore. To purify, eliminate the noise and combine together, and purification and noise elimination is effective;

2, of the present utility model simple in structure, easy for installation, long service life;

When 3, using the utility model, do not reduce power, can reduce oil consumption;

When 4, using the utility model, good purification, its carbon monoxide purification ratio is greater than 90 percent, and the hydrocarbon purification ratio all meets or exceeds the NBS requirement greater than 80 percent;

It is effective to eliminate the noise when 5, using the utility model, the silencing apparatus decline 1-3 decibel of under situation at a slow speed, producing than prior art, at the uniform velocity with the acceleration situation under the silencing apparatus decline 1-2 decibel produced than prior art.

Claims

1, a kind of cone vortex type purifying vehicle exhaust silencing apparatus, it is characterized in that including suction tude (9), shell (2), muffler plate (8), inner core (5), insulation blanket (7), catalyst carrier (6), inner core seal ring (4), spiral muffler plate (3) and several parts of outlet pipe (1), in said inner core (5), be provided with uniform at interval two catalyst carriers (6) of using insulation blanket (7) wrapping respectively at least, end at inner core (5) is provided with inner core seal ring (4), the other end is provided with muffler plate (8), go into suction tude (9) in muffler plate (8) one terminations then, be welded with the outlet pipe (1) of spiral muffler plate (3) one of inner core seal ring (4) one termination, load onto shell (2) then.

2,, it is characterized in that said suction tude (9) and outlet pipe (1) are the garden column tubes, the hole that respectively to be provided with at least 300 diameters on its garden cylinder be the 2-5 millimeter by the described cone vortex type of claim 1 purifying vehicle exhaust silencing apparatus.

3, by the described cone vortex type of claim 1 purifying vehicle exhaust silencing apparatus, it is characterized in that said shell (2) is welded for upper and lower two halves, be provided with at least four muscle (10) in the middle, be respectively equipped with big cone (11) and cone (12) at its tail head two ends.

4,, it is characterized in that said muffler plate (8) is the hole that to be provided with at least 150 diameters on the sheet metal of garden shape be the 2-5 millimeter by the described cone vortex type of claim 1 purifying vehicle exhaust silencing apparatus.

5, by the described cone vortex type of claim 1 purifying vehicle exhaust silencing apparatus, it is characterized in that said inner core (5) is the garden tube that is welded by the upper and lower two halves of symmetry.

6,, it is characterized in that said insulation blanket (7) made by thermal-protective material by the described cone vortex type of claim 1 purifying vehicle exhaust silencing apparatus.

7,, it is characterized in that said catalyst carrier (6) is added with many small catalysts of ceramic honeycomb Cylinder carrier that rare earth metal is made catalyzer for what steinheilite was made by the described cone vortex type of claim 1 purifying vehicle exhaust silencing apparatus.

8, by the described cone vortex type of claim 1 purifying vehicle exhaust silencing apparatus, it is characterized in that said inner core seal ring (4) is a thin iron hoop.

9, by the described cone vortex type of claim 1 purifying vehicle exhaust silencing apparatus, it is characterized in that said spiral muffler plate (3) is a taper, and helix angle is the 15-35 degree.