CN2328796Y

CN2328796Y - Tail gas noise clearing device for motor vehicle

Info

Publication number: CN2328796Y
Application number: CN 97228366
Authority: CN
Inventors: 朱柯明
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-10-14
Filing date: 1997-10-14
Publication date: 1999-07-14
Anticipated expiration: 2007-10-14

Abstract

The utility model belongs to a tail gas purifier and silencer for motor vehicles, which comprises an outer sleeve pipe whose both ends are provided with an inlet and an outlet, a secondary inner sleeve pipe, a primary inner sleeve pipe and a filter body, and the secondary inner sleeve pipe, the primary inner sleeve pipe and the filter body are orderly arranged in the outer sleeve pipe. The primary inner sleeve pipe and the secondly inner sleeve pipe are all filter tubes which are made of porous materials, and the filter body is a spiral body which is made of porous materials. The utility model has the advantages of simple structural, easy manufacture, convenient installation, convenient disassembly and convenient exchange, the highest decontamination of the tail gas can be reached by 98%, and noise can be reduced by 80% at the most.

Description

Tail gas purifying and noise silencing device for motor vehicle

The design relates to the motor vehicle tail-gas purifying silencer.

Along with rapid development of economy, grow with each passing day as the Motor Vehicle quantity of launch vehicle, the tail gas of vehicular emission also more and more causes people's attention to the pollution of environment.People's research and design the vent systems and the baffler of various structures, even, improve the structure of motor by improving the quality of motor, set up additional member, make the fuel abundant gas of burning and emission abatement and reduce noise as far as possible with enterprise.Even but state-of-the art petrol engine Motor Vehicle, when just coming into operation, though the discharging of tail gas and noise are comparatively desirable, yet increase along with Vehicle-Miles of Travel, parts such as motor take place aging and wearing and tearing, noise and discharge tail gas, and especially the black flue gas also can increase gradually, said nothing of the Motor Vehicle of the Motor Vehicle of those old type tubes, particularly diesel engine.In addition, also can differently because of the quality of driver make discharge tail gas different for same Motor Vehicle.At present, existing various exhaust gas cleaners or because of purifying effect is low, or because of costing an arm and a leg, or because of changeing inconvenience and addressing the above problem that difficulty all can not be satisfied with being installed.

The design's purpose is to design a kind of tail gas purifying and noise silencing device for motor vehicle that can obviously reduce black flue gas in the tail gas and noise reduction, and the new old automobile that its is fit to various models uses, and using effect is not subjected to the influence of driver quality.

Another purpose of the design is that the installation cost of design is low, installs to change conveniently.

The design's tail gas purifying and noise silencing device for motor vehicle comprises that two ends bring the outer sleeve 1 of outer pipe 3,4 into, fits in first inner sleeve 7 and filter 2 in the outer sleeve 1 successively.First inner sleeve 7 is corrugated tubes that the laminated plate by two-layer above wire gaze 5 constitutes, filter 2 is heliconids that the laminated plate by the two-layer above wire gaze 5 of pleat folding forms, and the interlayer of the wire gaze laminated plate of first inner sleeve 7 and filter 2 also can accompany high-temperature resistant fiber thing 6.

For further improving purifying effect and the increase noise reduction ability of device to tail gas, second inner sleeve 9 is set also between the outer sleeve 1 and first inner sleeve 7 and around the guiding spiral bar 8 of first inner sleeve outside, the guiding spiral bar is clamped between first inner sleeve 7 and second inner sleeve 9.Second inner sleeve 9 is corrugated tubes that the laminated plate by two-layer above wire gaze constitutes, and also can accompany the high-temperature resistant fiber thing at the interlayer of wire gaze laminated plate.

In order to reduce cost, first inner sleeve 7, second inner sleeve 9 can be made resistant to elevated temperatures nonwoven metal fiber or non-metallic fiber wire mesh tube.Filter 2 is the heliconids that formed by resistant to elevated temperatures nonwoven metal fiber or non-metallic fiber silk screen.

The design's tail gas purifying and noise silencing device for motor vehicle is simple in structure, cost is low, be easy to make, install and change convenience.During installation, only need and to connect the design's who goes up respective length device after one section of the original outlet pipe amputation of Motor Vehicle.No matter be the new car or the used car of the sort of model, in addition the tractor of diesel engine, discharged flue gas can remove 98% at most behind installation the design's the device, and noise is the highest to reduce by 80%, and its purifying silencing effect is not subjected to the influence of driving technology.

Fig. 1 is the stereogram that the part of a kind of tail gas purifying and noise silencing device for motor vehicle of the design is cut open.

Fig. 2 is the sectional view that forms pleat wire gaze laminated plate folding, that have fibre object that heliconid uses, and wherein a is a front view, and b is the A-A sectional view of a.

Fig. 3 is the stereogram that the part of the design's another kind of tail gas purifying and noise silencing device for motor vehicle is cut open.

Fig. 4 is the stereogram that the part of a kind of tail gas purifying and noise silencing device for motor vehicle of employing non-woven fiber silk screen is cut open.

Fig. 5 is the stereogram that the part of the another kind of tail gas purifying and noise silencing device for motor vehicle of employing non-woven fiber silk screen is cut open.

Be further described below in conjunction with the mode of execution and the effect thereof of accompanying drawing the design's tail gas purifying and noise silencing device for motor vehicle.

Fig. 1 is the stereogram that the part of a kind of tail gas purifying and noise silencing device for motor vehicle of the design is cut open, and it brings the outer sleeve 1 of outer pipe 3,4 into by two ends, and first inner sleeve 7 and the filter 2 that fit in successively in the outer sleeve 1 are formed.First inner sleeve 7 is the corrugated tubes with gas permeability, and it can be made with the laminated plate that two-layer or two-layer above wire gaze 5 is overlapped into.For increasing filtering effect, between the double layer of metal silk screen, also can add one deck high-temperature resistant fiber thing, as mineral wool etc.Usually use the wire gaze of 1～8 millimeter 2 mesh, mesh too slightly removes the flue gas weak effect, the too little easy obstruction of mesh.Mineral wool thickness is between 0.5～3 millimeter.The interval of two ripples of corrugated tubes is between 2～15 millimeters, and the interval is snapshot of oneself rattle gas velocity too, at interval the too big filtering effect that influences.The heliconid that filter 2 is formed by pleat folding, two-layer above wire gaze laminated plate.For increasing filtering effect, between the double layer of metal silk screen, also can put one deck high-temperature resistant fiber thing, as mineral wool.Laminated plate elder generation pleat folding is twisted into helical again can increase its effective length greatly under the situation that does not increase device length, make the gas and the filter that flow through that extremely long contacting travel be arranged, and can obviously improve the tail gas clean-up effect.It is main purifying part.The structure of pleat wire gaze laminated plate folding, that accompany high-temperature resistant fiber is seen Fig. 2, and wherein a is a front view, and b is the A-A sectional view of a.Laminated plate among the figure comprises each layer of metal silk screen 5 and imbedded high-temperature resistant fiber thing 6 up and down.The pleat folding degree of depth and the width of laminated plate can be selected as required.The big more tail gas of the degree of depth and filter 2 to contact distance long more, filtering effect can increase, the diameter of device also increases, otherwise then reduces, and generally is controlled between 2～20 millimeters.Width is big more, and the effective length of filter shortens, and the filter run of tail gas shortens, and filtering effect can reduce; Otherwise then increase.Generally be controlled between 2～20 millimeters.This laminated plate twisting has just been become heliconid, and heliconid fits in first inner sleeve 7.Spirochetal spiral shell square also can influence the flow velocity and the filtering effect of tail gas.The spiral shell square is generally selected between 80～250 millimeters.The too little exhaust gas flow resistance of spiral shell square too conference influences the horsepower of Motor Vehicle; The spiral shell square is too big, and the mobile purifying effect of tail gas near linear is bad.First inner sleeve 7 and filter 2 can be selected isostructural laminated plate for use, also can select the laminated plate of different structure respectively for use.All fixedly connected with the two ends of outer sleeve 1 in the two ends of first inner sleeve 7 and filter 2, the most frequently used method is welding.

Fig. 3 sets up second inner sleeve 9 and guiding spiral bar 8 on device shown in Figure 1.Second inner sleeve 9 is the corrugated tubes that are made of two-layer above wire gaze laminated plate, also can press from both sides the high-temperature resistant fiber thing at interlayer.Filter, first inner sleeve and second inner sleeve can use identical materials, promptly accompany or do not accompany the wire gaze laminated plate of fibre object, also can select for use respectively.Second inner sleeve 9 is arranged between the outer sleeve 1 and first inner sleeve 7.Guiding spiral bar 8 is clamped between first inner sleeve 7 and second inner sleeve 9 around the outside of first inner sleeve 7.The both bootable tail gas of guiding spiral bar 8 is pressed the helical duct walking, increases the stroke of tail gas, and increase contacts with two inner sleeves, and making again between first inner sleeve and second inner sleeve has certain interval, is more conducive to the elimination and the exhaust gas flow of noise.Guiding spiral bar 8 uses general metal bar, band all can.

When this device used, the tail end of earlier desire being installed the tail gas discharging pipe of this device Motor Vehicle cut out one section, and its length is roughly identical with this device length, and the inlet tube with this device is socketed on the former tail gas discharge pipe then.Only need pull up when need changing old reinstall new.Change conveniently owing to install, so no matter be new car, the still all as easy as rolling off a log realization of old car transformation.

During device work shown in Figure 3, tail gas enters first inner sleeve 7 by suction tude.Some gases are along the helical duct axial advancement of filter 2.Simultaneously some gas passes first inner sleeve 7 and enters in the cavity between first inner sleeve 7 and second inner sleeve 9.The pleat of tail gas in the axial advancement process and filter 2 folding bumps against, and makes portion gas pass filter 2 and is purified gradually; Portion gas still marches forward and the internal surface of continuous and the filter 2 and first inner sleeve 7 bumps against and progressively purification.Tail gas in the cavity between first inner sleeve 7 and second inner sleeve 9 is separated into two parts also, and a part is advanced along the helical duct of guiding spiral bar 8, bumps against with the outer surface of first inner sleeve 7 and the internal surface of second inner sleeve 9 respectively; The a small amount of tail gas of another part then passes second inner sleeve 9 and enters that direct-axis marches forward in the cavity between the outer sleeve 1 and second inner sleeve 9, and constantly collides with the corrugated outer surface of second inner sleeve 9, equally tail gas is had catharsis.Tail gas after the purification is discharged from outlet.Tail gas in the process of advancing all is spiral advancing as seen from the above, and effective distance of filtering is long, level is many, all be purified to some extent no matter they advance in that cavity, the flue gas wherein and the particulate of harmful gas are trapped on wire gaze and the fibre object.The acoustic energy of tail gas is absorbed by them in the process of advancing simultaneously, so noise also is minimized.Similar substantially to Fig. 3 constructional device during the device busy of Fig. 1 structure, but the probability that tail gas is cleaned obviously will be lacked.The device of evidence Fig. 1 structure reaches as high as 80% to very dense black column gas cleaning, and noise can reduce by 60% at most, and the device of Fig. 3 structure purifies 98% to this kind flue gas is the highest, noise reduction 80%; The device of two kinds of structures sees that to naked eyes the purification of obviously dense flue gas all reaches as high as 98%, noise reduction 80%.

Fig. 4 and its structure of device shown in Figure 5 be similar with Fig. 1 and Fig. 3 substantially respectively.Different is that filter is the heliconid that forms with non-woven steel fiber or non-metallic fiber silk screen, and the pipe that first inner sleeve and second inner sleeve are to use non-woven steel fiber or non-metallic fiber silk screen to make, obviously can reduce cost simplified manufacturing technique like this.Because these materials all have gas permeability and can be detained particulate, thereby tail gas there are purification and sound deadening.Its purifying effect is relevant with the degree of compaction of non-woven steel fiber or non-metallic fiber silk screen, closely knit more effect is good more, but too closely knit can influence working life of exhaust gas flow and silk screen, then purifying effect is bad for the too pine of pressure, generally adopts half closely knit silk screen better.Evidence, this class device to the purification of tail gas and erasure effect respectively with Fig. 1 of the employing laminated plate of homogeneous structure and Fig. 3 substantially roughly the same.

Employing is respectively 3,5,8 millimeter 2 chromium silk silk screen by mesh, and each is two-layer, the ripple that the superimposed laminated plate of mineral wool of about 1 millimeters thick of therebetween is made respectively is spaced apart 10 millimeters corrugated tubes to be first inner sleeve 7 and the pleat folding width of making and highly to be the filter 2 that 8 millimeters, spiral shell square are respectively 80,150,250 millimeters, make the device of 9 kinds of structures shown in Figure 1 respectively, be installed in separately on sedan car and the tractor.Sedan car has travelled more than ten thousand kilometers, discharges the obvious appreciable thick black flue gas of naked eyes originally, does not see that all the black flue gas is arranged after this device is installed, and noise reduces about 60%.The tractor discharge tail gas that these devices are housed becomes nattierblue by thick black column flue gas, roughly removes 80%, and noise also reduces about 60%.If make the device of structure shown in Figure 3, promptly set up the device of making second inner sleeve and guiding spiral bar with laminated plate of the same race, the thick black column flue gas that installs to original discharging when travelling on the tractor be can't see substantially, and purification can be up to 98%, noise reduction 80%.

Claims

1, tail gas purifying and noise silencing device for motor vehicle, it comprises that two ends bring the outer sleeve 1 of outer pipe 3,4 into and fit in filter 2 in the outer sleeve, it is characterized in that said device also comprises first inner sleeve 7 that fits between outer sleeve 1 and the filter 2, said filter 2 is heliconids that the laminated plate by the two-layer above wire gaze 5 of pleat folding forms, and said first inner sleeve 7 is corrugated tubes that the laminated plate by the wire gaze 5 more than two-layer constitutes.

2, by the said tail gas purifying and noise silencing device for motor vehicle of claim 1, it is characterized in that accompanying high-temperature resistant fiber thing 6 at the interlayer of the spirochetal wire gaze laminated plate of said formation.

3,, it is characterized in that accompanying high-temperature resistant fiber thing 6 at the interlayer of the wire gaze laminated plate of said formation first inner sleeve 7 by the said tail gas purifying and noise silencing device for motor vehicle of claim 1.

4, by claim 1 or 2 or 3 said tail gas purifying and noise silencing device for motor vehicle, it is characterized in that between the said outer sleeve 1 and first inner sleeve 7, second inner sleeve 9 being set also, be wound with guiding spiral bar 8 in the outside of said first inner sleeve 7, said guiding spiral bar is clamped between first inner sleeve 7 and second inner sleeve 9, and said second inner sleeve 9 is the corrugated tubes that are made of two-layer above wire gaze laminated plate.

5,, it is characterized in that accompanying high-temperature resistant fiber thing 6 at the interlayer of the wire gaze laminated plate of said formation second inner sleeve 9 by the said tail gas purifying and noise silencing device for motor vehicle of claim 4.

6, by the said tail gas purifying and noise silencing device for motor vehicle of claim 1, it is characterized in that said first inner sleeve is nonwoven metal fiber or non-metallic fiber wire mesh tube, said filter is the heliconid that is formed by nonwoven metal fiber or non-metallic fiber silk screen.

7, by the said tail gas purifying and noise silencing device for motor vehicle of claim 4, it is characterized in that said second inner sleeve is nonwoven metal fiber or non-metallic fiber wire mesh tube.