CN202117735U

CN202117735U - Engine tail gas catalytic purification muffler

Info

Publication number: CN202117735U
Application number: CN2011201635418U
Authority: CN
Inventors: 刘光文
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-05-19
Filing date: 2011-05-19
Publication date: 2012-01-18
Anticipated expiration: 2021-05-19

Abstract

The utility model discloses an engine tail gas catalytic purification muffler. In prior art, the mufflers and tail gas purifiers of many engines are separated, thereby increasing manufacturing cost and installation volume of engine accessories. A front muffling chamber, a middle muffling chamber, a main muffling chamber and a back muffling chamber are respectively arranged in a catalytic muffler main body; and a main catalytic chamber is arranged between the main muffling chamber and the back muffling chamber. When a gas discharged from an engine enters into the muffler through a gas inlet pipe, a sound is removed under the action of a muffling pipe, and then the gas is purified after being catalyzed by a catalyst in the catalytic chamber, thereby realizing muffling and purifying at the same time. The engine tail gas catalytic purification muffler has simple and optimized structure, high tail gas purifying rate, strong adaptability and long service life and enables low power loss of the engine.

Description

Engine tail gas catalyzed purification silencer

Technical field

The utility model relates to engine tail gas catalyzed purification silencer, be suitable for the noise reduction and the tail gas clean-up of various engine fuels such as diesel oil, gasoline, LPG, LNG, CNG.

Background technique

Along with the industry and the fast development of automobile industry, waste gas that produces during engine operation and NOISE ON ENVIRONMENT cause serious harm, are one of the principal elements of present stage city environmental pollution.Present stage, the baffler and the exhaust gas cleaner of a lot of motors separate, and have increased the manufacture cost and the installing space of engine fittings; Though integrated noise reduction catalyst converter is also arranged; In patent CN 1288503A and CN 1272903A, relate to the noise reduction catalytic converter of mini engine, but for the bigger motor of discharge capacity, the noise reduction catalyst converter of domestic production at present not very desirable to the purifying effect of tail gas; Engine power loss is also bigger; Owing to some reasons on the structural design, make catalyzed muffler have bigger difference to the noise reduction purifying effect of different model, power and different fuel motor simultaneously, just the adaptability of catalyzed muffler is not strong; Tend to attend to one thing and lose sight of another, general effect is difficult to reach noise reduction, the emission standard of regulation.How to solve these problems that catalyzed muffler exists; Through to the Combinatorial Optimization on the catalyzed muffler structural design; Improve the adaptability that catalyzed muffler purifies for different model, power and the noise reduction of different fuel motor; Reducing engine power loss, is a problem that is worth further investigation.

Summary of the invention

The purpose of the utility model is exactly to pass through the catalyzed muffler structure optimization design; Start with from the performance and the fuel performance of motor; The character of respectively forming gas of binding engine discharging tail gas; Adopt the mode of multiplex's part section optimization assembling, reach the purpose that the harmful gas in engine noise, the tail gas is accurately purified.For the motor of various models provides the concisely optimization of a kind of structure, noise reduction, tail gas clean-up efficient is high, engine power loss is few, adaptability is strong, the catalyzed muffler of long service life.

The foregoing invention purpose realizes through following technological scheme.Engine tail gas catalyzed purification silencer is made up of catalyzed muffler main body cylindraceous, and the axial plane that an end side surface of catalyzed muffler main body is provided with suction tude, the relative the other end is provided with steam outlet pipe; In the catalyzed muffler main body, begin to be disposed with preceding anechoic chamber from inlet end, middle anechoic chamber; Main anechoic chamber; Total catalyst chamber and anechoic chamber, back, preceding anechoic chamber and middle anechoic chamber are separated by preceding dividing plate, and middle anechoic chamber and main anechoic chamber are separated by central diaphragm; Main anechoic chamber is separated by main dividing plate with total catalyst chamber; Total catalyst chamber is separated by rear bulkhead with the anechoic chamber, back, all is provided with the hush pipe that is covered with bloop in preceding anechoic chamber, middle anechoic chamber, main anechoic chamber and the anechoic chamber, back, and total catalyst chamber is made up of 1-8 branch catalyst chamber.

Take the utility model of above-mentioned measure, in the catalyzed muffler main body, be provided with respectively preceding, in, main and anechoic chamber, back; Also be provided with total catalyst chamber in main anechoic chamber and back between the anechoic chamber, the gas of discharging when motor is when suction tude gets into the utility model, through the effect of hush pipe; Sound is able to cancellation; After passing through the catalysis of catalytic body in the catalyst chamber again, gas is purified, and the purpose of noise reduction and purification realizes simultaneously.In the catalyst chamber of the utility model, use the specification of honeycomb ceramic carrier or metal beehive carrier to be: φ 267 * 60, and 400 orders, carrier usage quantity are 3.When on 9.5L LNG motor, making an experiment, erasure effect reaches more than 65%, and the tail gas clean-up parameter is as shown in the table:

Exhaust gas component	Before the catalyst converter	Behind the catalyst converter	Transformation efficiency
				HC	115	35	69.6％
CO	0.03	0	100％
				NO _X	458	466	-1.8％

Therefore, the utlity model has that structure is concisely optimized, characteristics such as tail gas clean-up efficient is high, engine power loss is few, adaptability is strong, long service life and one.

For specifying the utility model, the utility model is done further to detail below in conjunction with accompanying drawing and mode of execution.

Description of drawings

Fig. 1 is the utility model structural representation;

Fig. 2 is another mode of execution structural representation of the utility model;

Fig. 3 is the A-A cut-away view of Fig. 1.

Embodiment

As shown in Figure 1, it is one cylindric that the utility model catalyzed muffler main body 1 is, and by the metallic material preparation, is provided with suction tude 2 in an end side surface of catalyzed muffler main body 1, and the diameter of suction tude 2 is 80-200 millimeters.Extend in the preceding anechoic chamber 3 in the catalyzed muffler main body 1 by suction tude 2; That in preceding anechoic chamber, be provided with partly is preceding hush pipe 3-1; Be covered with bloop 4 on the preceding hush pipe 3-1; Span between the bloop 4 is the 1-10 millimeter, and the plane shape of bloop 4 is circle or ellipse or triangle or square, and the unit area of bloop 4 is 3-300 square millimeters/individual.Adjacent with preceding anechoic chamber 3 in catalyzed muffler main body 1 is middle anechoic chamber 5, is separated by preceding dividing plate 3-2 between preceding anechoic chamber 3 and the middle anechoic chamber 5, and preceding dividing plate 3-2 is provided with vent 3-3, and the quantity of vent 3-3 is that 1-3 is individual.Hush pipe 5-1 in middle anechoic chamber 5, also being provided with, the diameter of middle hush pipe 5-1 is the 80-200 millimeter, is covered with bloop 4 equally.Adjacent with middle anechoic chamber 5 is main anechoic chamber 6; 5-2 separates by central diaphragm; Central diaphragm 5-2 goes up the vent 5-3 that is provided with and communicates with middle hush pipe 5-1; The 1-10 bar master hush pipe 6-1 that in main anechoic chamber 6, is provided with as shown in Figure 3, main hush pipe 6-1 diameter is the 20-80 millimeter, is covered with bloop 4 above equally.Adjacent with main anechoic chamber 6 is total catalyst chamber 7, is separated by main dividing plate 6-2, and main dividing plate 6-2 is provided with main vent 6-3, main vent 6-3 and corresponding the communicating of main hush pipe 6-1.Total catalyst chamber 7 has 1-8 branch catalyst chamber, and each branch catalyst chamber can be fit into catalyst carrier 7-1, and every two adjacent branch catalyst chamber are separated by annular baffle 7-2.Adjacent with total catalyst chamber is anechoic chamber 8, back; 7-3 separates by rear bulkhead; Be provided with back hush pipe 8-1 in the back anechoic chamber 8, be covered with bloop 4 above equally, the end of back hush pipe 8-1 communicates with rear bulkhead 7-3; The other end communicates with respect to the outlet pipe 9 on the other end axial plane of inlet end with being arranged on catalyzed muffler main body 1, and the diameter of outlet pipe is the 80-200 millimeter.

The utility model is work like this: by waste gas hush pipe 3-1 before suction tude 2 gets into of motor discharge; And in bloop 4 is discharged to preceding anechoic chamber 3; Again through in the anechoic chamber 5 in the entering of the vent 3-3 on the preceding dividing plate 3-2; In bloop 4 gets among the hush pipe 5-1, and the vent 5-3 from central diaphragm 5-2 gets into main anechoic chamber 6 in middle anechoic chamber 5, and waste gas passes through bloop 4 on the main hush pipe 6-1 again in main hush pipe 6-1 gets into total catalyst chamber 7 main anechoic chamber 6 in; Catalytic purification through each catalyst carrier in total catalyst chamber 7 is purified gas; Purge gas gets in the anechoic chamber 8, back through the vent 7-4 on the rear bulkhead 7-3 again, and gets into back hush pipe 8-1 from bloop 4, discharges from outlet pipe 9.So far, the gas of discharge is through classification noise reduction and catalytic purification, and waste gas has obtained purification, and the purpose of waste gas noise reduction and purification reaches simultaneously.

That shown in Figure 2 is the another kind of embodiment of the utility model; In this embodiment, suction tude 2 is arranged on the axial plane of catalyzed muffler main body 1 one ends, and outlet pipe then is arranged on the side with respect to the other end of inlet end; Air inlet and exhaust and embodiment illustrated in fig. 1 different; Be that motor combustion gas inflow direction in the present embodiment is different, effect does not change, and is one of mode of execution of the utility model equally.

Fig. 1 and embodiment shown in Figure 2 also have other mode of execution; In these two embodiments,, change suction tude 2 into exhaust if change outlet pipe 9 into air inlet; Then catalytic purification of exhaust gases and noise reduction order will change; The just noise reduction then of elder generation's catalytic purification, but this change does not change the effect of catalytic purification and noise reduction, is the mode of execution of the utility model equally.

Claims

1. engine tail gas catalyzed purification silencer; Be made up of catalyzed muffler main body cylindraceous, the axial plane that an end side surface that it is characterized in that catalyzed muffler main body (1) is provided with suction tude (2), the relative the other end is provided with outlet pipe (9), in catalyzed muffler main body (1); Begin to be disposed with preceding anechoic chamber (3) from inlet end; Middle anechoic chamber (5), main anechoic chamber (6), total catalyst chamber (7) and anechoic chamber (8), back; Preceding anechoic chamber (3) and middle anechoic chamber (5) are separated by preceding dividing plate (3-2); In noise reduction (5) chamber and main anechoic chamber (6) separate by central diaphragm (5-2), main anechoic chamber (6) are separated by main dividing plate (6-2) with total catalyst chamber (7), total catalyst chamber (7) with after anechoic chamber (8) separate by rear bulkhead (7-3); All be provided with the hush pipe (3-1), (5-1), (6-1) that are covered with bloop (4) in preceding anechoic chamber (3), middle anechoic chamber (5), main anechoic chamber (6) and the anechoic chamber, back (8) and reach (8-1), total catalyst chamber is made up of 1-8 branch catalyst chamber.

2. engine tail gas catalyzed purification silencer according to claim 1, the diameter that it is characterized in that suction tude (2) is the 80-200 millimeter, the diameter of outlet pipe is the 80-200 millimeter.

3. according to the said engine tail gas catalyzed purification silencer of claim 1, it is characterized in that main hush pipe (6) has the 1-10 bar, main hush pipe (6-1) diameter is the 20-80 millimeter.

4. engine tail gas catalyzed purification silencer according to claim 1; It is characterized in that the span between the bloop (4) is the 1-10 millimeter; The plane shape of bloop (4) is circle or ellipse or triangle or square, and the unit area of bloop (4) is a 3-300 square millimeter/individual.

5. engine tail gas catalyzed purification silencer according to claim 1 is characterized in that each branch catalyst chamber can be fit into catalyst carrier (7-1), and every two adjacent branch catalyst chamber are separated by annular baffle (7-2).