CN2352682Y

CN2352682Y - Double layer cone vortex type exhaust gases purifying silencing apparatus

Info

Publication number: CN2352682Y
Application number: CN98229612U
Authority: CN
Inventors: 王德利; 周忠庆
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-09-30
Filing date: 1998-09-30
Publication date: 1999-12-08
Anticipated expiration: 2008-09-30

Abstract

The utility model relates to a double-layer cone vortex type exhaust gases purifying silencing apparatus, which belongs to the automotive parts for automobiles. The utility model is suitable for eliminating tail gas of automobiles and noise pollution. The utility model comprises a cone inner casing, a cone outer casing, a catalyst support, an acoustic panel, a thermal insulation pressing pad, an inlet pipe, an exhaust pipe, a screw deflector, etc. The utility model has the advantages of reasonable structure, beautiful appearance and easy installation, the purification, the noise elimination and the economization are combined as integration, and the purification and the service life correspond to the automobile exhaust purification standard of the national environmental protection agency. The fuel saving is 4.5%, and the utility model is a novel environmental protection product with high social benefits and high economic benefits.

Description

Double-deck cone vortex type purifying vehicle exhaust silencing apparatus

The utility model provides a kind of double-deck cone vortex type purifying vehicle exhaust silencing apparatus to belong to auto parts machinery, is suitable for eliminating the usefulness of the environmental pollution that tail gas and noise caused of 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.

The inner core of ZL93242198.9 " cone vortex type purifying vehicle exhaust silencing apparatus " and shell adopt the local double layer enclosed construction, the front and back conical section is individual layer, its deficiency is that heat radiation is big, the combination of unfavorable catalyzer, more disadvantageously muffler plate and seal ring Yin Wendu raise and deform, cause and shell between produce the gap, be not purified thereby side leakage gas takes place, reduce purifying effect.So far, always there are inner core and shell to adopt the purifying vehicle exhaust silencing apparatus of full double seal cone vortex type structure.

It is big that the purpose of this utility model is to overcome the existing existing carrier vapour lock of automobile purification silencing apparatus, the air-flow instability, be easy to generate fault, reduce engine power, increase oil consumption and the unfavorable deficiency of noise elimination purifying effect, thereby a kind of double-deck cone vortex type purifying vehicle exhaust silencing apparatus is provided.

The purpose of this utility model realizes by following approach:

The utility model includes suction tude, shell, inner core, muffler plate, the heat insulation parts such as liner, catalyst carrier, hold-down ring and outlet pipe that compress, in set at least 1 catalyst case in inner core middle part, coincide and be provided with the catalyst carrier that compresses the liner parcel by heat insulation, tighten up by the muffler plate and the hold-down ring that coincide with inner core respectively at the head of catalyst carrier, tail end, in the big cone of inner core, bocca, establish a suction tude and outlet pipe respectively then, again shell being coincide to be contained in outside the inner core is connected with suction tude, outlet pipe, is solidified as a whole.

Said suction tude is a garden cylindricality metal tube, is provided with 150 diameters at least and is 2 to 5 millimeters aperture on the cylinder of the garden of one end, and the other end has flange or be provided with equally distributed 2 grooves at least on post surface, garden.

Said shell for up and down two ones be symmetrically welded and form, the middle part is garden cylindricality or ellipse garden cylindricality, is respectively equipped with big cone and bocca at two ends end to end, is provided with at least 1 inner convex rib on the surface at middle part.Said inner core is symmetrically welded and forms for upper and lower two ones of coincideing with shell, the middle part is garden cylindricality or ellipse garden cylindricality, be respectively equipped with big cone and bocca at head, tail two ends, be provided with the inner convex rib that at least 1 span equates at middle part surface, composition has 1 catalyst case at least thus, and establishes an inner convex rib in its auger surface.

Said muffler plate is that to be provided with at least 200 diameters be 2 to 6 millimeters hole for the garden shape that matches with inner core or shape metalwork surface, ellipse garden.The said heat insulation liner that compresses is to be formed by the thermal-protective material compacting.Said catalyst carrier is to be added with ceramic honeycomb cylindrical body or oval many small catalysts of the cylinder carrier that rare earth metal and transition metal oxide are made catalyzer.Said hold-down ring is the metal ring that matches with inner core.Said outlet pipe is a cylindrical metal tube, is provided with at least 200 diameters on the surface of one end and is 2 to 5 millimeters aperture, and the other end can be managed orchid, can establish spiral deflector in pipe.

Fig. 1 is the utility model embodiment's a half section schematic representation, wherein: 1-suction tude, 2-shell, 3-inner core, 4-muffler plate, the heat insulation liner that compresses of 5-, 6-catalyst carrier, 7-hold-down ring, 8-outlet pipe, 18-spiral deflector.

Fig. 2 is the half section schematic representation of shell, wherein: the big cone of 9-, 10-muscle, 11-elliptical cylinder-shape, 12-bocca.

Fig. 3 is the half section schematic representation of inner core, wherein: the big cone of 13-, 14-muscle, 15-elliptical cylinder-shape, 16-bocca, 17-catalyst chamber.

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

The utility model embodiment includes suction tude 1, shell 2, inner core 3, muffler plate 4, the heat insulation liner 5 that compresses, catalyst carrier 6, hold-down ring 7 and outlet pipe more than 8 parts, in set 4 the elliptical cylinder-shape catalyst cases 17 in inner core 3 middle parts, coincide and be provided with the catalyst carrier 6 that compresses liner 5 parcels by heat insulation, head in catalyst carrier 6, tail end is tightened up by the oval muffler plate 4 and the oval hold-down ring 7 that coincide with inner core 3 respectively, then in the big cone 13 of inner core 3, establish a suction tude 1 and outlet pipe 8 in the bocca 16 respectively, again shell 2 is coincide and be contained in inner core 3 outer and suction tude 1, outlet pipe 8 connects, and is solidified as a whole.

Said suction tude 1 is a cylindrical metal tube, is provided with 200 diameters and is 5 millimeters aperture on the cylndrical surface of one end, and the other end has flange.

Said shell 2 is symmetrically welded and forms for upper and lower two ones, and the middle part is elliptical cylinder-shape 11, is respectively equipped with big cone 9 and bocca 12 at head, tail two ends, is provided with 4 inner convex ribs 10 on the surface at middle part.

Said inner core 3 is for forming with shell 2 identical being symmetrically welded by upper and lower two ones, the middle part is elliptical cylinder-shape 15, be respectively equipped with big cone 13 and bocca 16 at head, tail two ends, be provided with the inner convex rib 14 that 3 spans equate at middle part surface, form 4 catalyst cases 17 thus, and establish an inner convex rib on its big cone 13 surfaces.

Said muffler plate 4 is that to be provided with 200 diameters be 5 millimeters hole for the oval metalwork surface that matches with inner core 3.The said heat insulation liner 5 that compresses is formed by the asbestos compacting.Said catalyst carrier 6 is to be added with the oval many small catalysts of cylinder of the ceramic honeycomb carrier that rare earth metal and transition metal oxide are made catalyzer, and said hold-down ring 7 is the metal elliptical rings that coincide with inner core 3.Said outlet pipe 8 is a cylindrical metal tube, is provided with 250 diameters on the surface of one end and is 2 millimeters aperture, and the other end is provided with flange, is provided with spiral deflector 18 in pipe.

When using the utility model embodiment, as long as take down the silencing apparatus of original automobile, suction tude 1 of the present utility model is linked to each other with the outlet pipe of motor car engine, behind the automobile starting, the gas that motor is discharged enters inner core 3 by suction tude 1, enters multipole catalyst carrier 6 and carry out oxidation-reduction reaction after muffler plate 4 shuntings, attenuate acoustic noise, and harmful gas is converted into nontoxic carbon dioxide and water, meanwhile, noise is subjected to multistage further decay.Purified gas enters afterbody, because the volume of bocca 16 progressively dwindles, forces air-flow to quicken to enter outlet pipe 8, under the effect of spiral deflector 18, implements purification, noise elimination and energy-conservation effect thereby form eddy flow discharge outside.

The utility model contrast prior art has following advantage:

1. the utility model is owing to adopt full double seal taper-like spiral wind type structure, because of And reduce heat loss, the suitable temperature of favourable catalyst, and thoroughly eradicate because thermal change Shape and the tail gas side leakage that causes has solved the incurable disease that purifying rate descends;

2. the utility model is owing to adopt the catalyst carrier of cylindrical or elliptical cylinder-shape, Thereby enlarged the scope of application;

3. technology of the present utility model is simple, and is easy to assembly, low cost of manufacture, just In automatic batch production;

4. the utility model is owing to adopt rare earth metal and transition metal oxide to urge Change agent, therefore catalyst is brought up to three-way catalyst, greatly improved purification efficiency.

Claims

1. double-deck cone vortex type purifying vehicle exhaust silencing apparatus, it is characterized in that including suction tude (1), shell (2), inner core (3), muffler plate (4), the heat insulation liner (5) that compresses, catalyst carrier (6), hold-down ring (7) and several parts of outlet pipe (8), in inner core (3) set at least two catalyst cases in middle part (17), coincide and be provided with the catalyst carrier (6) that compresses liner (5) parcel by dottle pin, head in catalyst carrier (6), tail end is tightened up by the muffler plate (4) and the hold-down ring (7) that coincide with inner core (3) respectively, then in the big cone (13) of inner core (3), establish a suction tude (1) and outlet pipe (8) in the bocca (16) respectively, again shell (2) being coincide to be contained in outside the inner core (3) is connected with suction tude (1) outlet pipe (8), is solidified as a whole.

2. by the described double-deck cone vortex type purifying vehicle exhaust silencing apparatus of claim 1, it is characterized in that said suction tude (1) is a cylindrical metal tube, at least be provided with 150 diameters and be 2 to 5 millimeters aperture on the cylndrical surface of one end, the other end is flanged or be provided with 2 uniform grooves at least at periphery.

3. by the described double-deck cone vortex type purifying vehicle exhaust silencing apparatus of claim 1, it is characterized in that said shell (2) is formed by connecting for upper and lower two symmetries, cylindrical or the elliptical cylinder-shape (11) in middle part, be respectively equipped with big cone (9) and bocca (12) at head, tail two ends, be provided with at least 1 inner convex rib (10) on the surface at middle part.

4. by the described double-deck cone vortex type purifying vehicle exhaust silencing apparatus of claim 1, it is characterized in that said inner core (3) is formed by connecting by upper and lower two symmetries for coincideing with shell (2), cylindrical or the elliptical cylinder-shape (15) in middle part, be respectively equipped with big cone (13) and bocca (16) at head, tail two ends, be provided with the inner convex rib (14) that at least 1 span equates at middle part surface, form at least 1 catalyst case (17) thus, and establish an inner convex rib on its big cone (13) surface.

5. by the described double-deck cone vortex type purifying vehicle exhaust silencing apparatus of claim 1, it is characterized in that said muffler plate (4) is that to be provided with at least 200 diameters be 2 to 6 millimeters hole for the circular or oval metalwork surface that matches with inner core (3).

6. must ask 1 described double-deck cone vortex type purifying vehicle exhaust silencing apparatus by power, it is characterized in that said catalyst carrier (6) is to be added with ceramic honeycomb cylindrical body or oval many small catalysts of the cylinder carrier that rare earth metal and transition metal oxide are made catalyzer.

7. by the described double-deck cone vortex type purifying vehicle exhaust silencing apparatus of claim 1, it is characterized in that said hold-down ring (7) is the metal ring that matches with inner core (3).

8. by the described double-deck cone vortex type purifying vehicle exhaust silencing apparatus of claim 1, it is characterized in that said outlet pipe (8) is a round metal tube, being provided with at least 200 diameters on the surface of one end is 2 to 5 millimeters apertures, the other end can be managed orchid, can establish spiral deflector (18) in pipe.