CN105649729A

CN105649729A - Low-emission silencer

Info

Publication number: CN105649729A
Application number: CN201610155044.0A
Authority: CN
Inventors: 唐立春; 张茂磊; 王立勇; 李绍勇; 崔景国; 邵逸群
Original assignee: Shandong Huasheng Pesticide Machinery Co Ltd
Current assignee: Shandong Huasheng Pesticide Machinery Co Ltd
Priority date: 2016-03-18
Filing date: 2016-03-18
Publication date: 2016-06-08

Abstract

The invention relates to the technical field of universal small engines, in particular to a low-emission silencer. An exhausting silencer shell is divided by a partition plate into a first cavity and a second cavity. An air inlet is formed in the shell wall of the first cavity. A catalyst is embedded in the position, opposite to the air inlet, in the partition plate. One end of an exhaust pipe is arranged in the second cavity, and the other end of the exhaust pipe is opened outside the cavity through the first cavity and is fixedly arranged on the partition plate. Waste gas exhausted by the exhaust pipe is exhausted through a fireproof net. Tail gas, with the low temperature, exhausted by the silencer is blown to the outside of the second cavity of the silencer to be cooled, thus, the temperature of tail gas can be further reduced, and the functions of cooling, flame eliminating, repeated tightening and the like can be achieved. The safety of products is ensured, and the requirements of domestic and overseas emission regulations are met.

Description

Low emission deafener

Technical field

The present invention relates to general small-size technical field of engines, particularly to a kind of low emission deafener.

Background technology

The emission request that the supporting electromotor of formula instrument is increasingly higher is held for state adversaries such as satisfied China and America and Europes, raw emissions is exceeded to the electromotor of various countries' laws and regulations requirement, catalyst need to be increased in the deafener of its use, to reduce discharge, and then meet the relevant laws and regulations requirement to discharge.

But after increasing catalyst in deafener, original tail gas, by, after catalyst, forming second-time burning, produces high-temperature tail gas and flame, adds the thermic load of deafener. Cause deafener the second cavity shell due to the effect of high-temperature tail gas and flame, be in red cook-off light state, electromotor can be caused at impact, subtract in throttle, high low speed transformation process, produce spray Flame Phenomena in deafener exhaust ports; High temperature also can cause the screw of fastening deafener to occur loosening phenomenon, and the problems referred to above seriously add the danger that hand-held tool complete machine uses, therefore, be badly in need of a kind of increase catalyst after can reduce the muffler of exhaust temperature.

Summary of the invention

It is an object of the invention to provide a kind of low emission deafener that can solve the problems referred to above, deafener increases dividing plate and exhaustor, namely after the tail gas that gasoline engine is discharged enters deafener from the first chamber, the high-temperature tail gas that second-time burning produces after the catalyst on dividing plate enters the second chamber, along exhaustor, deafener the first chamber, wind scooper, flame screen route is discharged, the relatively low tail gas of temperature discharged due to deafener blows to and cools down outside deafener the second chamber, therefore, reduce exhaust temperature further, also cooling can be realized, flame arrest, the function such as tighten up, also ensure that the safety of product.

For solving technical problem, the invention discloses a kind of low emission deafener, there is one and be divided into the first chamber and the muffler shell in the second chamber by dividing plate, described first cavity shell wall is provided with air inlet, in described embedding dividing plate, the position relative with air inlet is provided with catalyst, being provided through dividing plate, one end is placed in the second chamber other end and is opened on the exhaustor outside chamber through the first chamber, and the waste gas that described exhaustor is discharged is discharged through flame screen.

Preferentially, it is provided with wind scooper between described first chamber and flame screen.

Preferentially, the bolt interior siphunculus for being arranged on cylinder body by low emission deafener it is provided through inside described muffler shell.

The invention has the beneficial effects as follows owing to deafener increasing dividing plate and exhaustor, namely the high-temperature tail gas that after catalyzed dose of catalysis of tail gas that gasoline engine is discharged, second-time burning produces enters the second chamber, along exhaustor, discharge through deafener the first chamber, wind scooper, flame screen route, the relatively low tail gas of temperature discharged due to deafener again blows to and cools down outside deafener the second chamber, therefore, reduce exhaust temperature further, the function such as also can realize cooling, flame arrest, tighten up, also ensure that the safety of product, also to meet the requirement of relevant laws and regulations.

Accompanying drawing explanation

Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the present invention, and this schematic description and description is used for explaining the present invention, is not intended that inappropriate limitation of the present invention.

Fig. 1 is the technical program schematic diagram;

Fig. 2 is A-A view;

Fig. 3 is B-B view;

Fig. 4 is E direction view.

In accompanying drawing, sequence number illustrates: 1, housing; 2, dividing plate; 3, the first chamber; 4, exhaustor; 5, interior siphunculus; 6, flange is strengthened; 7, bolt; 8, catalyst; 9, the second chamber; 10, wind scooper; 11, air inlet; 12, flame screen.

Detailed description of the invention

As shown in Figure 1, Figure 2, Figure 3, Figure 4, the present invention includes the 3, second chamber 9, housing 1(air inlet the 11, first chamber), dividing plate 2, exhaustor 4, wind scooper 10, flame screen 12, catalyst 8, interior siphunculus 5.

Muffler shell 1 is separated into two chambeies by dividing plate 2, the first chamber 3 and the second chamber 9, and dividing plate 2 is welded with interior siphunculus 5, exhaustor 4, catalyst 8; One end that interior siphunculus 5 contacts with cylinder body is welded with reinforcement flange 6, and exhaustor 4 one opening is placed on the second chamber 9, and another opening stretches out behind the first chamber 3, and wind scooper 10 is packed on the housing 1 outside exhaustor 4 external part, and flame screen 12 is arranged on wind scooper 10.

Bolt 7 is arranged on cylinder body through interior siphunculus 5, reinforcement flange 6 muffler shell 1.

Specific works process: after the tail gas that gasoline engine is discharged is entered deafener the first chamber by air inlet, the high-temperature tail gas that after catalyzed dose of catalysis, second-time burning produces enters the second chamber, along exhaustor, discharging through deafener the first chamber, wind scooper, flame screen route, the emission path of waste gas is:��

The relatively low tail gas of temperature discharged due to deafener again blows to and cools down outside deafener the second chamber, therefore, reduces exhaust temperature further, and specifically flowing to path is:��

The waste gas discharged through this organization plan achieves cooling, flame arrest function, thus eliminating fastening bolt loosening phenomenon occur owing to the impact of high temperature causes, it is ensured that the safety of product, also meets the emission request of domestic and international relevant laws and regulations.

The obvious present invention implements and is not subject to the restrictions described above, as long as have employed the improvement of the various unsubstantialities that the design of the method for the present invention carries out with technical scheme, all within protection scope of the present invention.

Claims

1. a low emission deafener, there is a housing (1) being separated into the first chamber (3) and the second chamber (9) by dividing plate (2), housing (1) wall of described first chamber (3) is provided with air inlet (11), in described embedding dividing plate (2), the position relative with air inlet (11) is provided with catalyst (8), it is provided through dividing plate (2), one end is placed in the exhaustor (4) that the second chamber (9) other end is opened on outside chamber through the first chamber (3), and the waste gas that described exhaustor (4) is discharged is discharged through flame screen (12).

2. low emission deafener as claimed in claim 1, is characterized by: be provided with wind scooper (10) between described first chamber (3) and flame screen (12).

3. low emission deafener as claimed in claim 1, is characterized by: described muffler shell (1) is internal is provided through the bolt (7) the interior siphunculus (5) for being arranged on by low emission deafener on cylinder body.