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Waste gas treatment method for silencer, dust-extraction device and engineering machinery motor

A technology for construction machinery and noise reduction devices, which is applied in the fields of dust removal devices, exhaust gas treatment, and silencers. It can solve problems such as the impact of noise reduction effects, the impact on the environment, and the increase in dust accumulation in the silencer, so as to achieve environmental protection and reduce particle content. Effect

Inactive Publication Date: 2012-12-26
SANY HEAVY MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, construction machinery on the market generally adopts diesel engines, and the products of diesel engine combustion mainly include carbon monoxide (CO), hydrocarbons (CH), nitrogen oxides (NOx) and dust particles. , the use of exhaust gas recirculation can only reduce CH and nitrogen oxides, and the adoption rate of particle traps is extremely low due to limitations. The exhaust gas does not pass through the dust removal equipment, and the dust particles are directly discharged, which affects the environment.
[0003] Moreover, as the machine works for a long time, the dust accumulated in the muffler gradually increases, which affects the muffler effect and causes black smoke

Method used

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  • Waste gas treatment method for silencer, dust-extraction device and engineering machinery motor
  • Waste gas treatment method for silencer, dust-extraction device and engineering machinery motor
  • Waste gas treatment method for silencer, dust-extraction device and engineering machinery motor

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0041] refer to figure 1 . The muffler of this embodiment is used for exhaust gas treatment of engineering machinery engines, including dust removal device 12 and noise reduction device 9, dust removal device 12 includes a gas treatment module 13 and a gas-liquid separation module 8 based on the Venturi effect; dust removal device 12 and noise reduction device 9 pass through The connection is as follows: the gas processing module 13, the gas-liquid separation module 8 and the muffler 9 are connected sequentially.

[0042] refer to figure 2 Specifically, the gas treatment module 13 includes an acceleration unit, a mixing and collision unit, and a deceleration unit connected in sequence; the mixing and collision unit is also connected to a water spray pipe 4 .

[0043] In this embodiment, the exhaust gas from the engineering machinery engine enters the gas treatment module 13 through the pipeline 14. After the exhaust gas (also called "dusty gas") enters the acceleration unit...

no. 2 example

[0046] refer to image 3 .

[0047] The muffler of this embodiment is used for exhaust gas treatment of engineering machinery engines, including a dust removal device 12 and a noise reduction device 9, and the dust removal device 12 includes a gas processing module 13 and a gas-liquid separation module 8 based on the Venturi effect; wherein, the gas processing module 13 is also connected to There is a water spray pipe 4; and the muffler 9, the gas treatment module 13 and the gas-liquid separation module 8 are sequentially connected.

[0048] Similar to the first embodiment, specifically, the gas treatment module 13 includes an acceleration unit, a mixing collision unit and a deceleration unit connected in sequence; the mixing collision unit is also connected with a water spray pipe 4 .

[0049]In this embodiment, the exhaust gas from the engineering machinery engine enters the muffler device 9 through the pipeline 14 , and the exhaust gas (also called "dusty gas") after muffl...

no. 3 example

[0053] refer to Figure 4 . In this embodiment, an excavator engine is taken as an example for illustration.

[0054] This embodiment includes engine exhaust manifold seat 1, engine exhaust outlet pipe 2, venturi tube 3 (corresponding to "acceleration unit"), water spray pipe 4, throat pipe 5 (corresponding to "mixing and collision unit"), Diffusion pipe 6 (corresponding to "deceleration unit"), air pipe 7, gas-liquid separation device 8, muffler device 9, exhaust pipe 10, sewage pipe 11. The Venturi tube 3 is a generally tapered tube with a narrow mouth at one end and a wide mouth at the other end. Gas enters from the wide mouth at low speed and blows out from the narrow mouth at high speed.

[0055] The specific connection relationship is that the inlet end of the throat is connected with the narrow mouth end of the Venturi tube 3; Connected to the first end of the air pipe 7, the second end of the air pipe 7 extends into the gas-liquid separation module 8; the water spra...

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Abstract

The invention discloses a waste gas treatment method for a silencer, a dust-extraction device and an engineering machinery motor, wherein the silencer comprises the dust-extraction device and a silencing device, the dust-extraction device comprises a gas treatment module and a liquid-gas separation module. The dust-extraction device and the silencing device are connected through one of the two modes which are that the gas treatment module, the liquid-gas separation module and the silencing device are connected sequentially and the silencing device, the gas treatment module and the liquid-gas separation module are connected sequentially. And the gas treatment module comprises an accelerating unit, a hybrid collision unit and a decelerating unit, the accelerating unit, the hybrid collision unit and the decelerating unit are connected sequentially, and a spray head is arranged at an inlet portion of the hybrid collision unit. Venturi tube effect is used in the dust-extraction device to remove dust and purify waste gas, and accordingly particle content in discharge is lowered, and environment protection is better achieved.

Description

technical field [0001] The invention relates to the field of engineering machinery, in particular to a muffler, a dust removal device, and a method for treating exhaust gas of an engine of an engineering machinery. Background technique [0002] At present, construction machinery on the market generally adopts diesel engines, and the products of diesel engine combustion mainly include carbon monoxide (CO), hydrocarbons (CH), nitrogen oxides (NOx) and dust particles. , The use of exhaust gas recirculation can only reduce CH and nitrogen oxides. The adoption rate of particle traps is extremely low due to limitations. The exhaust gas does not pass through the dust removal equipment, and the dust particles are directly discharged, which affects the environment. [0003] Moreover, as the machine works for a long time, the dust accumulated in the muffler gradually increases, which affects the muffler effect and causes black smoke. Contents of the invention [0004] In view of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01N3/02F01N3/04
Inventor 汪春晖王岩陈少春
Owner SANY HEAVY MACHINERY
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