CN1291563A

CN1291563A - Tail gas purifying silencer for motor-driven vehicles

Info

Publication number: CN1291563A
Application number: CN 00132014
Authority: CN
Inventors: 伍本银
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-11-22
Filing date: 2000-11-22
Publication date: 2001-04-18

Abstract

A tail gas purifying silencer for motor-driven vehicles has a two-layer shell with gas inlet and outlet and filled with sound-absorbing material and multiple expansion cavities arranged sequentially and communicated to each other via multi-hole silencing tubes. It features that the cover linked to gas outlet of shell by spiral thread presses tightly the filtering purifier to gas port by spring and the top of cover is communicated to external air via multi-hole exhaustion tube. Its advantages include simple structure, low cost, high siencing and purifying effect, and long service life.

Description

Tail gas purifying silencer for motor-driven vehicles

The present invention relates to a kind of noise reduction clean-up device, particularly a kind of being used for to self-propelled vehicle with hot machine is the device that tail gas on the mechanical equipment of power carries out purifying silencing.

At present, be used for the design of generally just eliminating the noise of muffling device on the mechanical device that automobile, trac., farm vehicle, motor bike and factories and miness are power with hot machine, it only has simple silencing function, and can not realize purifying for containing just like objectionable impuritiess such as carbonic oxide, hydro-carbons in the tail gas.A kind of " bavin, gasoline motor car purification silencer " for example disclosed in CN2198389Y, it comprises gas rapid expanding chamber, gas middling speed expansion chamber, gas expansion chamber at a slow speed, be provided with outdoor dividing plate between gas rapid expanding chamber and the gas middling speed expansion chamber, gas expansion chamber, gas middling speed expansion chamber at a slow speed is hollow body respectively, has through hole on the hollow body respectively.This noise silencer has certain purification noise elimination effect, but exists following problem:

Since gas the hollow body, gas middling speed of expansion chamber expand and are respectively arranged with the rare earth catalyst particle on the hollow body that stops up at a slow speed, this kind structure is using the reason owing to carbon distribution can lose catalytic action for a long time, simultaneously because the increase of carbon distribution can hinder gas flow, can reduce the power of driving engine like this, make consumption increase, lose purification function.

2. the effect of stopping up of gas rapid expanding is not obvious, the effect of rapid expanding when entering the maximum gauge that rapid expanding stops up, gas is arranged, when gas moves forward since the cone shape that stops up of rapid expanding will form the compression formation back draught of gas to counter the pushing away of gas that begin to dilate and the flow direction engine freeing pipe, the gas flow that slows down speed, influence exhaust, reduce engine power.

Purpose of the present invention just provides a kind of tail gas of heat engine tail gas purifying silencer simple in structure, it can be that the tail gas that the vehicular emission of fuel goes out carries out noise reduction and purifying treatment with gasoline, diesel oil particularly to hot machine, and can change filter material easily, guarantee the depuration quality of waste gas, prevent the exhaust emission environment.

The objective of the invention is to realize by such technical scheme, it includes and brings into, exhausr port and be filled with the two-layer housing of sound absorption materials, be provided with a plurality of adjacent successively and expansion chambers that communicate by the porous hush tube in the housing, it is characterized in that: the corresponding end of exhausr port is threaded on upper shield and the housing, upper shield was pressed in by the spring handle filtering and purifying on the ring platform at gas port edge, and the cover tops communicates with the external world by the porous freeing pipe.

Principle of work of the present invention is such: gas by admission port enter successively link to each other and enter a plurality of expansion chambers by the porous hush tube, simultaneously on the sound wave bump sound absorption materials, wherein a part becomes heat, and another part is absorbed by sound absorption materials, to realize the purpose of noise reduction; Will pure gas after the tail gas of noise reduction is filtered by filtering and purifying by the porous emission by exhaust pipe in atmosphere, realize the purpose of purification.The scavenging material of filtration equipment for clarifying can arbitrarily be changed according to the requirement of different automobile types, and guaranteeing its reliable permanent purification function, the filter material that changes can be used as rubbish and imbeds undergroundly, perhaps reclaims and makes secondary after treatment and use.

Owing to adopted technique scheme, the present invention to have following advantage:

1. simple in structure, easy for installation, with low cost;

2. owing to be provided with a plurality of expansion chambers and the gentle soundboard of elasticity, therefore can strengthen the noise elimination effect, its noise elimination quality can reach 70 decibels;

3. owing to be provided with filtering and purifying, therefore can prevent environmental pollution to purifying as objectionable impuritiess such as carbonic oxide, hydro-carbons in the waste gas, it is 70 that its clean-up effect can reach hydrocarbon emission, and carbon monoxide emission is 0.05%.

4. can make the present invention have characteristics such as easy to maintenance, long service life and clean-up effect be lasting because of filtering and purifying with arbitrarily changing.

Description of drawings of the present invention is as follows:

Fig. 1 is a structural representation of the present invention;

Fig. 2 is an A-A cutaway view among Fig. 1.

Among the figure: 1. admission port; 2. exhausr port; 3. sound absorption materials; 4. housing; 5. porous hush tube; 6. expansion chamber; 7. upper shield; 8. filtering and purifying; 9. cross gas port; 10. porous freeing pipe; The soundboard 11. elasticity softens; 12. partition; 13. becket; 14. filtration, purification material; 15. filter screen; 16. spring; 17. ring platform.

The invention will be further described below in conjunction with drawings and Examples:

As shown in Figure 1, 2, the present invention includes the two-layer housing 4 of bringing gas port 1, exhausr port 2 into and being filled with sound absorption materials 3, be provided with a plurality of adjacent successively and expansion chambers 6 that communicate by porous hush tube 5 in the housing 4, it is characterized in that: exhausr port 2 corresponding ends are threaded on upper shield 7 and the housing 4, upper shield 7 was pressed in filtering and purifying 8 on the ring platform 17 at gas port 9 edges by spring 16, and upper shield 7 tops communicate with the external world by porous freeing pipe 10.

Principle of work of the present invention is such: gas by admission port 1 enter successively link to each other and enter a plurality of expansion chambers 6 by porous hush tube 5, simultaneously on the sound wave bump sound absorption materials 3, wherein a part becomes heat, and another part is absorbed by sound absorption materials 3, to realize the purpose of noise reduction; After the tail gas of noise reduction is filtered by filtering and purifying 8, pure gas is discharged in the atmosphere by porous freeing pipe 10 and goes, realize the purpose of purification.The scavenging material of filtration equipment for clarifying 8 can arbitrarily be changed according to the requirement of different automobile types, and guaranteeing its reliable permanent purification function, the filter material that changes is available as rubbish and imbeds undergroundly, perhaps reclaims and makes secondary after treatment and use.

As shown in Figure 1, be provided with the gentle soundboard 11 of elasticity with porous hush tube 5 corresponding positions in the housing 4.The gentle soundboard 11 of elasticity is set is and make sound wave that tail gas produces behind the soundboard swing crushing that softens, weaken the energy of sound wave, to reach the purpose of further noise reduction.

As shown in Figure 1, 2, filtering and purifying 8 is to be arranged to horizontal vertical staggered grid with partition 12 in becket 13, is full of filtration, purification material 14 in the grid, and the both sides, front and back of becket 13 are provided with filter screen 15.

Claims

1. tail gas purifying silencer for motor-driven vehicles, include bring into, exhausr port (1,2) and be filled with the two-layer housing (4) of sound absorption materials (3), be provided with a plurality of adjacent successively and expansion chambers (6) that communicate by porous hush tube (5) in the housing (4), it is characterized in that: upper shield (7) is gone up the corresponding end of exhausr port (2) with housing (4) and is threaded, upper shield (7) was pressed in filtering and purifying (8) on the ring platform (17) at gas port (9) edge by spring (16), and upper shield (7) top communicates with the external world by porous freeing pipe (10).

2. tail gas purifying silencer for motor-driven vehicles as claimed in claim 1 is characterized in that: be provided with the gentle soundboard (11) of elasticity with the corresponding position of porous hush tube (5) in the housing (4).

3. as claim 1,2 described tail gas purifying silencer for motor-driven vehicles, it is characterized in that: filtering and purifying (8) is to be arranged to horizontal vertical staggered grid with partition (12) in becket (13), be full of filtration, purification material (14) in the grid, the both sides, front and back of becket (13) are provided with filter screen (15).